Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
e2882c85 | 3 | Copyright (C) 1994-2018 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c SS |
31 | #include "defs.h" |
32 | #include "bfd.h" | |
80626a55 | 33 | #include "elf-bfd.h" |
c906108c SS |
34 | #include "symtab.h" |
35 | #include "gdbtypes.h" | |
c906108c | 36 | #include "objfiles.h" |
fa8f86ff | 37 | #include "dwarf2.h" |
c906108c SS |
38 | #include "buildsym.h" |
39 | #include "demangle.h" | |
50f182aa | 40 | #include "gdb-demangle.h" |
c906108c | 41 | #include "expression.h" |
d5166ae1 | 42 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 43 | #include "macrotab.h" |
c906108c SS |
44 | #include "language.h" |
45 | #include "complaints.h" | |
357e46e7 | 46 | #include "bcache.h" |
4c2df51b DJ |
47 | #include "dwarf2expr.h" |
48 | #include "dwarf2loc.h" | |
9219021c | 49 | #include "cp-support.h" |
72bf9492 | 50 | #include "hashtab.h" |
ae038cb0 DJ |
51 | #include "command.h" |
52 | #include "gdbcmd.h" | |
edb3359d | 53 | #include "block.h" |
ff013f42 | 54 | #include "addrmap.h" |
94af9270 | 55 | #include "typeprint.h" |
ccefe4c4 | 56 | #include "psympriv.h" |
53ce3c39 | 57 | #include <sys/stat.h> |
96d19272 | 58 | #include "completer.h" |
34eaf542 | 59 | #include "vec.h" |
98bfdba5 | 60 | #include "c-lang.h" |
a766d390 | 61 | #include "go-lang.h" |
98bfdba5 | 62 | #include "valprint.h" |
3019eac3 | 63 | #include "gdbcore.h" /* for gnutarget */ |
156942c7 | 64 | #include "gdb/gdb-index.h" |
60d5a603 | 65 | #include <ctype.h> |
cbb099e8 | 66 | #include "gdb_bfd.h" |
4357ac6c | 67 | #include "f-lang.h" |
05cba821 | 68 | #include "source.h" |
614c279d | 69 | #include "filestuff.h" |
dc294be5 | 70 | #include "build-id.h" |
22cee43f | 71 | #include "namespace.h" |
bef155c3 | 72 | #include "common/gdb_unlinker.h" |
14bc53a8 | 73 | #include "common/function-view.h" |
ecfb656c PA |
74 | #include "common/gdb_optional.h" |
75 | #include "common/underlying.h" | |
d5722aa2 | 76 | #include "common/byte-vector.h" |
927aa2e7 | 77 | #include "common/hash_enum.h" |
bbf2f4df | 78 | #include "filename-seen-cache.h" |
b32b108a | 79 | #include "producer.h" |
c906108c | 80 | #include <fcntl.h> |
c906108c | 81 | #include <sys/types.h> |
325fac50 | 82 | #include <algorithm> |
bc8f2430 JK |
83 | #include <unordered_set> |
84 | #include <unordered_map> | |
c62446b1 | 85 | #include "selftest.h" |
437afbb8 JK |
86 | #include <cmath> |
87 | #include <set> | |
88 | #include <forward_list> | |
c9317f21 | 89 | #include "rust-lang.h" |
b4987c95 | 90 | #include "common/pathstuff.h" |
437afbb8 | 91 | |
73be47f5 DE |
92 | /* When == 1, print basic high level tracing messages. |
93 | When > 1, be more verbose. | |
b4f54984 DE |
94 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
95 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 96 | |
d97bc12b | 97 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 98 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 99 | |
27e0867f DE |
100 | /* When non-zero, dump line number entries as they are read in. */ |
101 | static unsigned int dwarf_line_debug = 0; | |
102 | ||
900e11f9 JK |
103 | /* When non-zero, cross-check physname against demangler. */ |
104 | static int check_physname = 0; | |
105 | ||
481860b3 | 106 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 107 | static int use_deprecated_index_sections = 0; |
481860b3 | 108 | |
6502dd73 DJ |
109 | static const struct objfile_data *dwarf2_objfile_data_key; |
110 | ||
f1e6e072 TT |
111 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
112 | ||
113 | static int dwarf2_locexpr_index; | |
114 | static int dwarf2_loclist_index; | |
115 | static int dwarf2_locexpr_block_index; | |
116 | static int dwarf2_loclist_block_index; | |
117 | ||
73869dc2 DE |
118 | /* A descriptor for dwarf sections. |
119 | ||
120 | S.ASECTION, SIZE are typically initialized when the objfile is first | |
121 | scanned. BUFFER, READIN are filled in later when the section is read. | |
122 | If the section contained compressed data then SIZE is updated to record | |
123 | the uncompressed size of the section. | |
124 | ||
125 | DWP file format V2 introduces a wrinkle that is easiest to handle by | |
126 | creating the concept of virtual sections contained within a real section. | |
127 | In DWP V2 the sections of the input DWO files are concatenated together | |
128 | into one section, but section offsets are kept relative to the original | |
129 | input section. | |
130 | If this is a virtual dwp-v2 section, S.CONTAINING_SECTION is a backlink to | |
131 | the real section this "virtual" section is contained in, and BUFFER,SIZE | |
132 | describe the virtual section. */ | |
133 | ||
dce234bc PP |
134 | struct dwarf2_section_info |
135 | { | |
73869dc2 DE |
136 | union |
137 | { | |
e5aa3347 | 138 | /* If this is a real section, the bfd section. */ |
049412e3 | 139 | asection *section; |
73869dc2 | 140 | /* If this is a virtual section, pointer to the containing ("real") |
e5aa3347 | 141 | section. */ |
73869dc2 DE |
142 | struct dwarf2_section_info *containing_section; |
143 | } s; | |
19ac8c2e | 144 | /* Pointer to section data, only valid if readin. */ |
d521ce57 | 145 | const gdb_byte *buffer; |
73869dc2 | 146 | /* The size of the section, real or virtual. */ |
dce234bc | 147 | bfd_size_type size; |
73869dc2 DE |
148 | /* If this is a virtual section, the offset in the real section. |
149 | Only valid if is_virtual. */ | |
150 | bfd_size_type virtual_offset; | |
be391dca | 151 | /* True if we have tried to read this section. */ |
73869dc2 DE |
152 | char readin; |
153 | /* True if this is a virtual section, False otherwise. | |
049412e3 | 154 | This specifies which of s.section and s.containing_section to use. */ |
73869dc2 | 155 | char is_virtual; |
dce234bc PP |
156 | }; |
157 | ||
8b70b953 TT |
158 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
159 | DEF_VEC_O (dwarf2_section_info_def); | |
160 | ||
9291a0cd TT |
161 | /* All offsets in the index are of this type. It must be |
162 | architecture-independent. */ | |
163 | typedef uint32_t offset_type; | |
164 | ||
156942c7 DE |
165 | /* Ensure only legit values are used. */ |
166 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
167 | do { \ | |
168 | gdb_assert ((unsigned int) (value) <= 1); \ | |
169 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
170 | } while (0) | |
171 | ||
172 | /* Ensure only legit values are used. */ | |
173 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
174 | do { \ | |
175 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
176 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
177 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
178 | } while (0) | |
179 | ||
180 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
181 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
182 | do { \ | |
183 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
184 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
185 | } while (0) | |
186 | ||
3f563c84 PA |
187 | #if WORDS_BIGENDIAN |
188 | ||
189 | /* Convert VALUE between big- and little-endian. */ | |
190 | ||
191 | static offset_type | |
192 | byte_swap (offset_type value) | |
193 | { | |
194 | offset_type result; | |
195 | ||
196 | result = (value & 0xff) << 24; | |
197 | result |= (value & 0xff00) << 8; | |
198 | result |= (value & 0xff0000) >> 8; | |
199 | result |= (value & 0xff000000) >> 24; | |
200 | return result; | |
201 | } | |
202 | ||
203 | #define MAYBE_SWAP(V) byte_swap (V) | |
204 | ||
205 | #else | |
206 | #define MAYBE_SWAP(V) static_cast<offset_type> (V) | |
207 | #endif /* WORDS_BIGENDIAN */ | |
208 | ||
209 | /* An index into a (C++) symbol name component in a symbol name as | |
210 | recorded in the mapped_index's symbol table. For each C++ symbol | |
211 | in the symbol table, we record one entry for the start of each | |
212 | component in the symbol in a table of name components, and then | |
213 | sort the table, in order to be able to binary search symbol names, | |
214 | ignoring leading namespaces, both completion and regular look up. | |
215 | For example, for symbol "A::B::C", we'll have an entry that points | |
216 | to "A::B::C", another that points to "B::C", and another for "C". | |
217 | Note that function symbols in GDB index have no parameter | |
218 | information, just the function/method names. You can convert a | |
219 | name_component to a "const char *" using the | |
220 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
221 | ||
222 | struct name_component | |
223 | { | |
224 | /* Offset in the symbol name where the component starts. Stored as | |
225 | a (32-bit) offset instead of a pointer to save memory and improve | |
226 | locality on 64-bit architectures. */ | |
227 | offset_type name_offset; | |
228 | ||
229 | /* The symbol's index in the symbol and constant pool tables of a | |
230 | mapped_index. */ | |
231 | offset_type idx; | |
232 | }; | |
233 | ||
44ed8f3e PA |
234 | /* Base class containing bits shared by both .gdb_index and |
235 | .debug_name indexes. */ | |
236 | ||
237 | struct mapped_index_base | |
238 | { | |
239 | /* The name_component table (a sorted vector). See name_component's | |
240 | description above. */ | |
241 | std::vector<name_component> name_components; | |
242 | ||
243 | /* How NAME_COMPONENTS is sorted. */ | |
244 | enum case_sensitivity name_components_casing; | |
245 | ||
246 | /* Return the number of names in the symbol table. */ | |
247 | virtual size_t symbol_name_count () const = 0; | |
248 | ||
249 | /* Get the name of the symbol at IDX in the symbol table. */ | |
250 | virtual const char *symbol_name_at (offset_type idx) const = 0; | |
251 | ||
252 | /* Return whether the name at IDX in the symbol table should be | |
253 | ignored. */ | |
254 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
255 | { | |
256 | return false; | |
257 | } | |
258 | ||
259 | /* Build the symbol name component sorted vector, if we haven't | |
260 | yet. */ | |
261 | void build_name_components (); | |
262 | ||
263 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
264 | possible matches for LN_NO_PARAMS in the name component | |
265 | vector. */ | |
266 | std::pair<std::vector<name_component>::const_iterator, | |
267 | std::vector<name_component>::const_iterator> | |
268 | find_name_components_bounds (const lookup_name_info &ln_no_params) const; | |
269 | ||
270 | /* Prevent deleting/destroying via a base class pointer. */ | |
271 | protected: | |
272 | ~mapped_index_base() = default; | |
273 | }; | |
274 | ||
9291a0cd TT |
275 | /* A description of the mapped index. The file format is described in |
276 | a comment by the code that writes the index. */ | |
fc898b42 | 277 | struct mapped_index final : public mapped_index_base |
9291a0cd | 278 | { |
f00a2de2 PA |
279 | /* A slot/bucket in the symbol table hash. */ |
280 | struct symbol_table_slot | |
281 | { | |
282 | const offset_type name; | |
283 | const offset_type vec; | |
284 | }; | |
285 | ||
559a7a62 JK |
286 | /* Index data format version. */ |
287 | int version; | |
288 | ||
9291a0cd TT |
289 | /* The total length of the buffer. */ |
290 | off_t total_size; | |
b11b1f88 | 291 | |
f00a2de2 PA |
292 | /* The address table data. */ |
293 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 294 | |
3876f04e | 295 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 296 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 297 | |
9291a0cd TT |
298 | /* A pointer to the constant pool. */ |
299 | const char *constant_pool; | |
3f563c84 | 300 | |
44ed8f3e PA |
301 | bool symbol_name_slot_invalid (offset_type idx) const override |
302 | { | |
303 | const auto &bucket = this->symbol_table[idx]; | |
304 | return bucket.name == 0 && bucket.vec; | |
305 | } | |
5c58de74 | 306 | |
3f563c84 PA |
307 | /* Convenience method to get at the name of the symbol at IDX in the |
308 | symbol table. */ | |
44ed8f3e | 309 | const char *symbol_name_at (offset_type idx) const override |
f00a2de2 | 310 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 311 | |
44ed8f3e PA |
312 | size_t symbol_name_count () const override |
313 | { return this->symbol_table.size (); } | |
9291a0cd TT |
314 | }; |
315 | ||
927aa2e7 JK |
316 | /* A description of the mapped .debug_names. |
317 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 318 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 | 319 | { |
ed2dc618 SM |
320 | mapped_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile_) |
321 | : dwarf2_per_objfile (dwarf2_per_objfile_) | |
322 | {} | |
323 | ||
324 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
927aa2e7 JK |
325 | bfd_endian dwarf5_byte_order; |
326 | bool dwarf5_is_dwarf64; | |
327 | bool augmentation_is_gdb; | |
328 | uint8_t offset_size; | |
329 | uint32_t cu_count = 0; | |
330 | uint32_t tu_count, bucket_count, name_count; | |
331 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
332 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
333 | const gdb_byte *name_table_string_offs_reordered; | |
334 | const gdb_byte *name_table_entry_offs_reordered; | |
335 | const gdb_byte *entry_pool; | |
336 | ||
337 | struct index_val | |
338 | { | |
339 | ULONGEST dwarf_tag; | |
340 | struct attr | |
341 | { | |
342 | /* Attribute name DW_IDX_*. */ | |
343 | ULONGEST dw_idx; | |
344 | ||
345 | /* Attribute form DW_FORM_*. */ | |
346 | ULONGEST form; | |
347 | ||
348 | /* Value if FORM is DW_FORM_implicit_const. */ | |
349 | LONGEST implicit_const; | |
350 | }; | |
351 | std::vector<attr> attr_vec; | |
352 | }; | |
353 | ||
354 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
355 | ||
356 | const char *namei_to_name (uint32_t namei) const; | |
44ed8f3e PA |
357 | |
358 | /* Implementation of the mapped_index_base virtual interface, for | |
359 | the name_components cache. */ | |
360 | ||
361 | const char *symbol_name_at (offset_type idx) const override | |
362 | { return namei_to_name (idx); } | |
363 | ||
364 | size_t symbol_name_count () const override | |
365 | { return this->name_count; } | |
927aa2e7 JK |
366 | }; |
367 | ||
95554aad TT |
368 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
369 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
370 | ||
52059ffd TT |
371 | struct tu_stats |
372 | { | |
373 | int nr_uniq_abbrev_tables; | |
374 | int nr_symtabs; | |
375 | int nr_symtab_sharers; | |
376 | int nr_stmt_less_type_units; | |
377 | int nr_all_type_units_reallocs; | |
378 | }; | |
379 | ||
9cdd5dbd DE |
380 | /* Collection of data recorded per objfile. |
381 | This hangs off of dwarf2_objfile_data_key. */ | |
382 | ||
fd90ace4 | 383 | struct dwarf2_per_objfile : public allocate_on_obstack |
6502dd73 | 384 | { |
330cdd98 PA |
385 | /* Construct a dwarf2_per_objfile for OBJFILE. NAMES points to the |
386 | dwarf2 section names, or is NULL if the standard ELF names are | |
387 | used. */ | |
388 | dwarf2_per_objfile (struct objfile *objfile, | |
389 | const dwarf2_debug_sections *names); | |
ae038cb0 | 390 | |
330cdd98 PA |
391 | ~dwarf2_per_objfile (); |
392 | ||
d6541620 | 393 | DISABLE_COPY_AND_ASSIGN (dwarf2_per_objfile); |
330cdd98 PA |
394 | |
395 | /* Free all cached compilation units. */ | |
396 | void free_cached_comp_units (); | |
397 | private: | |
398 | /* This function is mapped across the sections and remembers the | |
399 | offset and size of each of the debugging sections we are | |
400 | interested in. */ | |
401 | void locate_sections (bfd *abfd, asection *sectp, | |
402 | const dwarf2_debug_sections &names); | |
403 | ||
404 | public: | |
405 | dwarf2_section_info info {}; | |
406 | dwarf2_section_info abbrev {}; | |
407 | dwarf2_section_info line {}; | |
408 | dwarf2_section_info loc {}; | |
409 | dwarf2_section_info loclists {}; | |
410 | dwarf2_section_info macinfo {}; | |
411 | dwarf2_section_info macro {}; | |
412 | dwarf2_section_info str {}; | |
413 | dwarf2_section_info line_str {}; | |
414 | dwarf2_section_info ranges {}; | |
415 | dwarf2_section_info rnglists {}; | |
416 | dwarf2_section_info addr {}; | |
417 | dwarf2_section_info frame {}; | |
418 | dwarf2_section_info eh_frame {}; | |
419 | dwarf2_section_info gdb_index {}; | |
927aa2e7 JK |
420 | dwarf2_section_info debug_names {}; |
421 | dwarf2_section_info debug_aranges {}; | |
330cdd98 PA |
422 | |
423 | VEC (dwarf2_section_info_def) *types = NULL; | |
8b70b953 | 424 | |
be391dca | 425 | /* Back link. */ |
330cdd98 | 426 | struct objfile *objfile = NULL; |
be391dca | 427 | |
d467dd73 | 428 | /* Table of all the compilation units. This is used to locate |
10b3939b | 429 | the target compilation unit of a particular reference. */ |
330cdd98 | 430 | struct dwarf2_per_cu_data **all_comp_units = NULL; |
ae038cb0 DJ |
431 | |
432 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
330cdd98 | 433 | int n_comp_units = 0; |
ae038cb0 | 434 | |
1fd400ff | 435 | /* The number of .debug_types-related CUs. */ |
330cdd98 | 436 | int n_type_units = 0; |
1fd400ff | 437 | |
6aa5f3a6 DE |
438 | /* The number of elements allocated in all_type_units. |
439 | If there are skeleton-less TUs, we add them to all_type_units lazily. */ | |
330cdd98 | 440 | int n_allocated_type_units = 0; |
6aa5f3a6 | 441 | |
a2ce51a0 DE |
442 | /* The .debug_types-related CUs (TUs). |
443 | This is stored in malloc space because we may realloc it. */ | |
330cdd98 | 444 | struct signatured_type **all_type_units = NULL; |
1fd400ff | 445 | |
f4dc4d17 DE |
446 | /* Table of struct type_unit_group objects. |
447 | The hash key is the DW_AT_stmt_list value. */ | |
330cdd98 | 448 | htab_t type_unit_groups {}; |
72dca2f5 | 449 | |
348e048f DE |
450 | /* A table mapping .debug_types signatures to its signatured_type entry. |
451 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
330cdd98 | 452 | htab_t signatured_types {}; |
348e048f | 453 | |
f4dc4d17 DE |
454 | /* Type unit statistics, to see how well the scaling improvements |
455 | are doing. */ | |
330cdd98 | 456 | struct tu_stats tu_stats {}; |
f4dc4d17 DE |
457 | |
458 | /* A chain of compilation units that are currently read in, so that | |
459 | they can be freed later. */ | |
330cdd98 | 460 | dwarf2_per_cu_data *read_in_chain = NULL; |
f4dc4d17 | 461 | |
3019eac3 DE |
462 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
463 | This is NULL if the table hasn't been allocated yet. */ | |
330cdd98 | 464 | htab_t dwo_files {}; |
3019eac3 | 465 | |
330cdd98 PA |
466 | /* True if we've checked for whether there is a DWP file. */ |
467 | bool dwp_checked = false; | |
80626a55 DE |
468 | |
469 | /* The DWP file if there is one, or NULL. */ | |
330cdd98 | 470 | struct dwp_file *dwp_file = NULL; |
80626a55 | 471 | |
36586728 TT |
472 | /* The shared '.dwz' file, if one exists. This is used when the |
473 | original data was compressed using 'dwz -m'. */ | |
330cdd98 | 474 | struct dwz_file *dwz_file = NULL; |
36586728 | 475 | |
330cdd98 | 476 | /* A flag indicating whether this objfile has a section loaded at a |
72dca2f5 | 477 | VMA of 0. */ |
330cdd98 | 478 | bool has_section_at_zero = false; |
9291a0cd | 479 | |
ae2de4f8 DE |
480 | /* True if we are using the mapped index, |
481 | or we are faking it for OBJF_READNOW's sake. */ | |
330cdd98 | 482 | bool using_index = false; |
9291a0cd | 483 | |
ae2de4f8 | 484 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
330cdd98 | 485 | mapped_index *index_table = NULL; |
98bfdba5 | 486 | |
927aa2e7 JK |
487 | /* The mapped index, or NULL if .debug_names is missing or not being used. */ |
488 | std::unique_ptr<mapped_debug_names> debug_names_table; | |
489 | ||
7b9f3c50 | 490 | /* When using index_table, this keeps track of all quick_file_names entries. |
56e64610 DE |
491 | TUs typically share line table entries with a CU, so we maintain a |
492 | separate table of all line table entries to support the sharing. | |
493 | Note that while there can be way more TUs than CUs, we've already | |
494 | sorted all the TUs into "type unit groups", grouped by their | |
495 | DW_AT_stmt_list value. Therefore the only sharing done here is with a | |
496 | CU and its associated TU group if there is one. */ | |
330cdd98 | 497 | htab_t quick_file_names_table {}; |
7b9f3c50 | 498 | |
98bfdba5 PA |
499 | /* Set during partial symbol reading, to prevent queueing of full |
500 | symbols. */ | |
330cdd98 | 501 | bool reading_partial_symbols = false; |
673bfd45 | 502 | |
dee91e82 | 503 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 504 | This is NULL if not allocated yet. |
02142a6c | 505 | The mapping is done via (CU/TU + DIE offset) -> type. */ |
330cdd98 | 506 | htab_t die_type_hash {}; |
95554aad TT |
507 | |
508 | /* The CUs we recently read. */ | |
330cdd98 | 509 | VEC (dwarf2_per_cu_ptr) *just_read_cus = NULL; |
527f3840 JK |
510 | |
511 | /* Table containing line_header indexed by offset and offset_in_dwz. */ | |
330cdd98 | 512 | htab_t line_header_hash {}; |
bbf2f4df PA |
513 | |
514 | /* Table containing all filenames. This is an optional because the | |
515 | table is lazily constructed on first access. */ | |
516 | gdb::optional<filename_seen_cache> filenames_cache; | |
6502dd73 DJ |
517 | }; |
518 | ||
ed2dc618 SM |
519 | /* Get the dwarf2_per_objfile associated to OBJFILE. */ |
520 | ||
521 | struct dwarf2_per_objfile * | |
522 | get_dwarf2_per_objfile (struct objfile *objfile) | |
523 | { | |
524 | return ((struct dwarf2_per_objfile *) | |
525 | objfile_data (objfile, dwarf2_objfile_data_key)); | |
526 | } | |
527 | ||
528 | /* Set the dwarf2_per_objfile associated to OBJFILE. */ | |
529 | ||
530 | void | |
531 | set_dwarf2_per_objfile (struct objfile *objfile, | |
532 | struct dwarf2_per_objfile *dwarf2_per_objfile) | |
533 | { | |
534 | gdb_assert (get_dwarf2_per_objfile (objfile) == NULL); | |
535 | set_objfile_data (objfile, dwarf2_objfile_data_key, dwarf2_per_objfile); | |
536 | } | |
c906108c | 537 | |
251d32d9 | 538 | /* Default names of the debugging sections. */ |
c906108c | 539 | |
233a11ab CS |
540 | /* Note that if the debugging section has been compressed, it might |
541 | have a name like .zdebug_info. */ | |
542 | ||
9cdd5dbd DE |
543 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
544 | { | |
251d32d9 TG |
545 | { ".debug_info", ".zdebug_info" }, |
546 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
547 | { ".debug_line", ".zdebug_line" }, | |
548 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 549 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 550 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 551 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 552 | { ".debug_str", ".zdebug_str" }, |
43988095 | 553 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 554 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 555 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 556 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 557 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
558 | { ".debug_frame", ".zdebug_frame" }, |
559 | { ".eh_frame", NULL }, | |
24d3216f | 560 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
561 | { ".debug_names", ".zdebug_names" }, |
562 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 563 | 23 |
251d32d9 | 564 | }; |
c906108c | 565 | |
80626a55 | 566 | /* List of DWO/DWP sections. */ |
3019eac3 | 567 | |
80626a55 | 568 | static const struct dwop_section_names |
3019eac3 DE |
569 | { |
570 | struct dwarf2_section_names abbrev_dwo; | |
571 | struct dwarf2_section_names info_dwo; | |
572 | struct dwarf2_section_names line_dwo; | |
573 | struct dwarf2_section_names loc_dwo; | |
43988095 | 574 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
575 | struct dwarf2_section_names macinfo_dwo; |
576 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
577 | struct dwarf2_section_names str_dwo; |
578 | struct dwarf2_section_names str_offsets_dwo; | |
579 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
580 | struct dwarf2_section_names cu_index; |
581 | struct dwarf2_section_names tu_index; | |
3019eac3 | 582 | } |
80626a55 | 583 | dwop_section_names = |
3019eac3 DE |
584 | { |
585 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
586 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
587 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
588 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 589 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
590 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
591 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
592 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
593 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
594 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
595 | { ".debug_cu_index", ".zdebug_cu_index" }, |
596 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
597 | }; |
598 | ||
c906108c SS |
599 | /* local data types */ |
600 | ||
107d2387 AC |
601 | /* The data in a compilation unit header, after target2host |
602 | translation, looks like this. */ | |
c906108c | 603 | struct comp_unit_head |
a738430d | 604 | { |
c764a876 | 605 | unsigned int length; |
a738430d | 606 | short version; |
a738430d MK |
607 | unsigned char addr_size; |
608 | unsigned char signed_addr_p; | |
9c541725 | 609 | sect_offset abbrev_sect_off; |
57349743 | 610 | |
a738430d MK |
611 | /* Size of file offsets; either 4 or 8. */ |
612 | unsigned int offset_size; | |
57349743 | 613 | |
a738430d MK |
614 | /* Size of the length field; either 4 or 12. */ |
615 | unsigned int initial_length_size; | |
57349743 | 616 | |
43988095 JK |
617 | enum dwarf_unit_type unit_type; |
618 | ||
a738430d MK |
619 | /* Offset to the first byte of this compilation unit header in the |
620 | .debug_info section, for resolving relative reference dies. */ | |
9c541725 | 621 | sect_offset sect_off; |
57349743 | 622 | |
d00adf39 DE |
623 | /* Offset to first die in this cu from the start of the cu. |
624 | This will be the first byte following the compilation unit header. */ | |
9c541725 | 625 | cu_offset first_die_cu_offset; |
43988095 JK |
626 | |
627 | /* 64-bit signature of this type unit - it is valid only for | |
628 | UNIT_TYPE DW_UT_type. */ | |
629 | ULONGEST signature; | |
630 | ||
631 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
9c541725 | 632 | cu_offset type_cu_offset_in_tu; |
a738430d | 633 | }; |
c906108c | 634 | |
3da10d80 KS |
635 | /* Type used for delaying computation of method physnames. |
636 | See comments for compute_delayed_physnames. */ | |
637 | struct delayed_method_info | |
638 | { | |
639 | /* The type to which the method is attached, i.e., its parent class. */ | |
640 | struct type *type; | |
641 | ||
642 | /* The index of the method in the type's function fieldlists. */ | |
643 | int fnfield_index; | |
644 | ||
645 | /* The index of the method in the fieldlist. */ | |
646 | int index; | |
647 | ||
648 | /* The name of the DIE. */ | |
649 | const char *name; | |
650 | ||
651 | /* The DIE associated with this method. */ | |
652 | struct die_info *die; | |
653 | }; | |
654 | ||
e7c27a73 DJ |
655 | /* Internal state when decoding a particular compilation unit. */ |
656 | struct dwarf2_cu | |
657 | { | |
fcd3b13d SM |
658 | explicit dwarf2_cu (struct dwarf2_per_cu_data *per_cu); |
659 | ~dwarf2_cu (); | |
660 | ||
661 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
662 | ||
d00adf39 | 663 | /* The header of the compilation unit. */ |
fcd3b13d | 664 | struct comp_unit_head header {}; |
e142c38c | 665 | |
d00adf39 | 666 | /* Base address of this compilation unit. */ |
fcd3b13d | 667 | CORE_ADDR base_address = 0; |
d00adf39 DE |
668 | |
669 | /* Non-zero if base_address has been set. */ | |
fcd3b13d | 670 | int base_known = 0; |
d00adf39 | 671 | |
e142c38c | 672 | /* The language we are debugging. */ |
fcd3b13d SM |
673 | enum language language = language_unknown; |
674 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 675 | |
fcd3b13d | 676 | const char *producer = nullptr; |
b0f35d58 | 677 | |
e142c38c DJ |
678 | /* The generic symbol table building routines have separate lists for |
679 | file scope symbols and all all other scopes (local scopes). So | |
680 | we need to select the right one to pass to add_symbol_to_list(). | |
681 | We do it by keeping a pointer to the correct list in list_in_scope. | |
682 | ||
683 | FIXME: The original dwarf code just treated the file scope as the | |
684 | first local scope, and all other local scopes as nested local | |
685 | scopes, and worked fine. Check to see if we really need to | |
686 | distinguish these in buildsym.c. */ | |
fcd3b13d | 687 | struct pending **list_in_scope = nullptr; |
e142c38c | 688 | |
b64f50a1 JK |
689 | /* Hash table holding all the loaded partial DIEs |
690 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 691 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
692 | |
693 | /* Storage for things with the same lifetime as this read-in compilation | |
694 | unit, including partial DIEs. */ | |
fcd3b13d | 695 | auto_obstack comp_unit_obstack; |
72bf9492 | 696 | |
ae038cb0 DJ |
697 | /* When multiple dwarf2_cu structures are living in memory, this field |
698 | chains them all together, so that they can be released efficiently. | |
699 | We will probably also want a generation counter so that most-recently-used | |
700 | compilation units are cached... */ | |
fcd3b13d | 701 | struct dwarf2_per_cu_data *read_in_chain = nullptr; |
ae038cb0 | 702 | |
69d751e3 | 703 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
704 | struct dwarf2_per_cu_data *per_cu; |
705 | ||
706 | /* How many compilation units ago was this CU last referenced? */ | |
fcd3b13d | 707 | int last_used = 0; |
ae038cb0 | 708 | |
b64f50a1 JK |
709 | /* A hash table of DIE cu_offset for following references with |
710 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 711 | htab_t die_hash = nullptr; |
10b3939b DJ |
712 | |
713 | /* Full DIEs if read in. */ | |
fcd3b13d | 714 | struct die_info *dies = nullptr; |
10b3939b DJ |
715 | |
716 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
717 | units referenced by this one. Only set during full symbol processing; | |
718 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 719 | htab_t dependencies = nullptr; |
10b3939b | 720 | |
cb1df416 | 721 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 722 | struct line_header *line_header = nullptr; |
4c8aa72d PA |
723 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
724 | it's owned by dwarf2_per_objfile::line_header_hash. If non-NULL, | |
725 | this is the DW_TAG_compile_unit die for this CU. We'll hold on | |
726 | to the line header as long as this DIE is being processed. See | |
727 | process_die_scope. */ | |
fcd3b13d | 728 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 729 | |
3da10d80 KS |
730 | /* A list of methods which need to have physnames computed |
731 | after all type information has been read. */ | |
c89b44cd | 732 | std::vector<delayed_method_info> method_list; |
3da10d80 | 733 | |
96408a79 | 734 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 735 | htab_t call_site_htab = nullptr; |
96408a79 | 736 | |
034e5797 DE |
737 | /* Non-NULL if this CU came from a DWO file. |
738 | There is an invariant here that is important to remember: | |
739 | Except for attributes copied from the top level DIE in the "main" | |
740 | (or "stub") file in preparation for reading the DWO file | |
741 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
742 | Either there isn't a DWO file (in which case this is NULL and the point | |
743 | is moot), or there is and either we're not going to read it (in which | |
744 | case this is NULL) or there is and we are reading it (in which case this | |
745 | is non-NULL). */ | |
fcd3b13d | 746 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 DE |
747 | |
748 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
749 | (zero is a valid value though). | |
1dbab08b | 750 | Note this value comes from the Fission stub CU/TU's DIE. */ |
fcd3b13d | 751 | ULONGEST addr_base = 0; |
3019eac3 | 752 | |
2e3cf129 DE |
753 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
754 | (zero is a valid value though). | |
1dbab08b | 755 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 756 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
757 | be used without needing to know whether DWO files are in use or not. |
758 | N.B. This does not apply to DW_AT_ranges appearing in | |
759 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
760 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
761 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
762 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
fcd3b13d | 763 | ULONGEST ranges_base = 0; |
2e3cf129 | 764 | |
c9317f21 TT |
765 | /* When reading debug info generated by older versions of rustc, we |
766 | have to rewrite some union types to be struct types with a | |
767 | variant part. This rewriting must be done after the CU is fully | |
768 | read in, because otherwise at the point of rewriting some struct | |
769 | type might not have been fully processed. So, we keep a list of | |
770 | all such types here and process them after expansion. */ | |
771 | std::vector<struct type *> rust_unions; | |
772 | ||
ae038cb0 DJ |
773 | /* Mark used when releasing cached dies. */ |
774 | unsigned int mark : 1; | |
775 | ||
8be455d7 JK |
776 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
777 | This test is imperfect as there may exist optimized debug code not using | |
778 | any location list and still facing inlining issues if handled as | |
779 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 780 | unsigned int has_loclist : 1; |
ba919b58 | 781 | |
1b80a9fa JK |
782 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
783 | if all the producer_is_* fields are valid. This information is cached | |
784 | because profiling CU expansion showed excessive time spent in | |
785 | producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
786 | unsigned int checked_producer : 1; |
787 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 788 | unsigned int producer_is_gcc_lt_4_3 : 1; |
5230b05a | 789 | unsigned int producer_is_icc_lt_14 : 1; |
4d4ec4e5 TT |
790 | |
791 | /* When set, the file that we're processing is known to have | |
792 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
793 | this information, but later versions do. */ | |
794 | ||
795 | unsigned int processing_has_namespace_info : 1; | |
d590ff25 YQ |
796 | |
797 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
e7c27a73 DJ |
798 | }; |
799 | ||
10b3939b DJ |
800 | /* Persistent data held for a compilation unit, even when not |
801 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 802 | read_symtab_private field of the psymtab. */ |
10b3939b | 803 | |
ae038cb0 DJ |
804 | struct dwarf2_per_cu_data |
805 | { | |
36586728 | 806 | /* The start offset and length of this compilation unit. |
45452591 | 807 | NOTE: Unlike comp_unit_head.length, this length includes |
3019eac3 DE |
808 | initial_length_size. |
809 | If the DIE refers to a DWO file, this is always of the original die, | |
810 | not the DWO file. */ | |
9c541725 | 811 | sect_offset sect_off; |
36586728 | 812 | unsigned int length; |
ae038cb0 | 813 | |
43988095 JK |
814 | /* DWARF standard version this data has been read from (such as 4 or 5). */ |
815 | short dwarf_version; | |
816 | ||
ae038cb0 DJ |
817 | /* Flag indicating this compilation unit will be read in before |
818 | any of the current compilation units are processed. */ | |
c764a876 | 819 | unsigned int queued : 1; |
ae038cb0 | 820 | |
0d99eb77 DE |
821 | /* This flag will be set when reading partial DIEs if we need to load |
822 | absolutely all DIEs for this compilation unit, instead of just the ones | |
823 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
824 | hash table and don't find it. */ |
825 | unsigned int load_all_dies : 1; | |
826 | ||
0186c6a7 DE |
827 | /* Non-zero if this CU is from .debug_types. |
828 | Struct dwarf2_per_cu_data is contained in struct signatured_type iff | |
829 | this is non-zero. */ | |
3019eac3 DE |
830 | unsigned int is_debug_types : 1; |
831 | ||
36586728 TT |
832 | /* Non-zero if this CU is from the .dwz file. */ |
833 | unsigned int is_dwz : 1; | |
834 | ||
a2ce51a0 DE |
835 | /* Non-zero if reading a TU directly from a DWO file, bypassing the stub. |
836 | This flag is only valid if is_debug_types is true. | |
837 | We can't read a CU directly from a DWO file: There are required | |
838 | attributes in the stub. */ | |
839 | unsigned int reading_dwo_directly : 1; | |
840 | ||
7ee85ab1 DE |
841 | /* Non-zero if the TU has been read. |
842 | This is used to assist the "Stay in DWO Optimization" for Fission: | |
843 | When reading a DWO, it's faster to read TUs from the DWO instead of | |
844 | fetching them from random other DWOs (due to comdat folding). | |
845 | If the TU has already been read, the optimization is unnecessary | |
846 | (and unwise - we don't want to change where gdb thinks the TU lives | |
847 | "midflight"). | |
848 | This flag is only valid if is_debug_types is true. */ | |
849 | unsigned int tu_read : 1; | |
850 | ||
3019eac3 DE |
851 | /* The section this CU/TU lives in. |
852 | If the DIE refers to a DWO file, this is always the original die, | |
853 | not the DWO file. */ | |
8a0459fd | 854 | struct dwarf2_section_info *section; |
348e048f | 855 | |
17ea53c3 | 856 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
cc12ce38 DE |
857 | of the CU cache it gets reset to NULL again. This is left as NULL for |
858 | dummy CUs (a CU header, but nothing else). */ | |
ae038cb0 | 859 | struct dwarf2_cu *cu; |
1c379e20 | 860 | |
e3b94546 SM |
861 | /* The corresponding dwarf2_per_objfile. */ |
862 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
9291a0cd | 863 | |
fffbe6a8 YQ |
864 | /* When dwarf2_per_objfile->using_index is true, the 'quick' field |
865 | is active. Otherwise, the 'psymtab' field is active. */ | |
9291a0cd TT |
866 | union |
867 | { | |
868 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 869 | or NULL for unread partial units. */ |
9291a0cd TT |
870 | struct partial_symtab *psymtab; |
871 | ||
872 | /* Data needed by the "quick" functions. */ | |
873 | struct dwarf2_per_cu_quick_data *quick; | |
874 | } v; | |
95554aad | 875 | |
796a7ff8 DE |
876 | /* The CUs we import using DW_TAG_imported_unit. This is filled in |
877 | while reading psymtabs, used to compute the psymtab dependencies, | |
878 | and then cleared. Then it is filled in again while reading full | |
879 | symbols, and only deleted when the objfile is destroyed. | |
880 | ||
881 | This is also used to work around a difference between the way gold | |
882 | generates .gdb_index version <=7 and the way gdb does. Arguably this | |
883 | is a gold bug. For symbols coming from TUs, gold records in the index | |
884 | the CU that includes the TU instead of the TU itself. This breaks | |
885 | dw2_lookup_symbol: It assumes that if the index says symbol X lives | |
886 | in CU/TU Y, then one need only expand Y and a subsequent lookup in Y | |
887 | will find X. Alas TUs live in their own symtab, so after expanding CU Y | |
888 | we need to look in TU Z to find X. Fortunately, this is akin to | |
889 | DW_TAG_imported_unit, so we just use the same mechanism: For | |
890 | .gdb_index version <=7 this also records the TUs that the CU referred | |
891 | to. Concurrently with this change gdb was modified to emit version 8 | |
69d751e3 DE |
892 | indices so we only pay a price for gold generated indices. |
893 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
796a7ff8 | 894 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; |
ae038cb0 DJ |
895 | }; |
896 | ||
348e048f DE |
897 | /* Entry in the signatured_types hash table. */ |
898 | ||
899 | struct signatured_type | |
900 | { | |
42e7ad6c | 901 | /* The "per_cu" object of this type. |
ac9ec31b | 902 | This struct is used iff per_cu.is_debug_types. |
42e7ad6c DE |
903 | N.B.: This is the first member so that it's easy to convert pointers |
904 | between them. */ | |
905 | struct dwarf2_per_cu_data per_cu; | |
906 | ||
3019eac3 | 907 | /* The type's signature. */ |
348e048f DE |
908 | ULONGEST signature; |
909 | ||
3019eac3 | 910 | /* Offset in the TU of the type's DIE, as read from the TU header. |
c88ee1f0 DE |
911 | If this TU is a DWO stub and the definition lives in a DWO file |
912 | (specified by DW_AT_GNU_dwo_name), this value is unusable. */ | |
3019eac3 DE |
913 | cu_offset type_offset_in_tu; |
914 | ||
915 | /* Offset in the section of the type's DIE. | |
916 | If the definition lives in a DWO file, this is the offset in the | |
917 | .debug_types.dwo section. | |
918 | The value is zero until the actual value is known. | |
919 | Zero is otherwise not a valid section offset. */ | |
920 | sect_offset type_offset_in_section; | |
0186c6a7 DE |
921 | |
922 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
923 | can share them. This points to the containing symtab. */ | |
924 | struct type_unit_group *type_unit_group; | |
ac9ec31b DE |
925 | |
926 | /* The type. | |
927 | The first time we encounter this type we fully read it in and install it | |
928 | in the symbol tables. Subsequent times we only need the type. */ | |
929 | struct type *type; | |
a2ce51a0 DE |
930 | |
931 | /* Containing DWO unit. | |
932 | This field is valid iff per_cu.reading_dwo_directly. */ | |
933 | struct dwo_unit *dwo_unit; | |
348e048f DE |
934 | }; |
935 | ||
0186c6a7 DE |
936 | typedef struct signatured_type *sig_type_ptr; |
937 | DEF_VEC_P (sig_type_ptr); | |
938 | ||
094b34ac DE |
939 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
940 | This includes type_unit_group and quick_file_names. */ | |
941 | ||
942 | struct stmt_list_hash | |
943 | { | |
944 | /* The DWO unit this table is from or NULL if there is none. */ | |
945 | struct dwo_unit *dwo_unit; | |
946 | ||
947 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 948 | sect_offset line_sect_off; |
094b34ac DE |
949 | }; |
950 | ||
f4dc4d17 DE |
951 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
952 | an object of this type. */ | |
953 | ||
954 | struct type_unit_group | |
955 | { | |
0186c6a7 | 956 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
957 | To simplify things we create an artificial CU that "includes" all the |
958 | type units using this stmt_list so that the rest of the code still has | |
959 | a "per_cu" handle on the symtab. | |
960 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 961 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
962 | struct dwarf2_per_cu_data per_cu; |
963 | ||
0186c6a7 DE |
964 | /* The TUs that share this DW_AT_stmt_list entry. |
965 | This is added to while parsing type units to build partial symtabs, | |
966 | and is deleted afterwards and not used again. */ | |
967 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 | 968 | |
43f3e411 | 969 | /* The compunit symtab. |
094b34ac | 970 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
971 | so we create an essentially anonymous symtab as the compunit symtab. */ |
972 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 973 | |
094b34ac DE |
974 | /* The data used to construct the hash key. */ |
975 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
976 | |
977 | /* The number of symtabs from the line header. | |
978 | The value here must match line_header.num_file_names. */ | |
979 | unsigned int num_symtabs; | |
980 | ||
981 | /* The symbol tables for this TU (obtained from the files listed in | |
982 | DW_AT_stmt_list). | |
983 | WARNING: The order of entries here must match the order of entries | |
984 | in the line header. After the first TU using this type_unit_group, the | |
985 | line header for the subsequent TUs is recreated from this. This is done | |
986 | because we need to use the same symtabs for each TU using the same | |
987 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
988 | there's no guarantee the line header doesn't have duplicate entries. */ | |
989 | struct symtab **symtabs; | |
990 | }; | |
991 | ||
73869dc2 | 992 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
993 | |
994 | struct dwo_sections | |
995 | { | |
996 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
997 | struct dwarf2_section_info line; |
998 | struct dwarf2_section_info loc; | |
43988095 | 999 | struct dwarf2_section_info loclists; |
09262596 DE |
1000 | struct dwarf2_section_info macinfo; |
1001 | struct dwarf2_section_info macro; | |
3019eac3 DE |
1002 | struct dwarf2_section_info str; |
1003 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
1004 | /* In the case of a virtual DWO file, these two are unused. */ |
1005 | struct dwarf2_section_info info; | |
3019eac3 DE |
1006 | VEC (dwarf2_section_info_def) *types; |
1007 | }; | |
1008 | ||
c88ee1f0 | 1009 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
1010 | |
1011 | struct dwo_unit | |
1012 | { | |
1013 | /* Backlink to the containing struct dwo_file. */ | |
1014 | struct dwo_file *dwo_file; | |
1015 | ||
1016 | /* The "id" that distinguishes this CU/TU. | |
1017 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
1018 | Since signatures came first, we stick with it for consistency. */ | |
1019 | ULONGEST signature; | |
1020 | ||
1021 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 1022 | struct dwarf2_section_info *section; |
3019eac3 | 1023 | |
9c541725 PA |
1024 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
1025 | sect_offset sect_off; | |
3019eac3 DE |
1026 | unsigned int length; |
1027 | ||
1028 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
1029 | cu_offset type_offset_in_tu; | |
1030 | }; | |
1031 | ||
73869dc2 DE |
1032 | /* include/dwarf2.h defines the DWP section codes. |
1033 | It defines a max value but it doesn't define a min value, which we | |
1034 | use for error checking, so provide one. */ | |
1035 | ||
1036 | enum dwp_v2_section_ids | |
1037 | { | |
1038 | DW_SECT_MIN = 1 | |
1039 | }; | |
1040 | ||
80626a55 | 1041 | /* Data for one DWO file. |
57d63ce2 DE |
1042 | |
1043 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
1044 | appears in a DWP file). DWP files don't really have DWO files per se - | |
1045 | comdat folding of types "loses" the DWO file they came from, and from | |
1046 | a high level view DWP files appear to contain a mass of random types. | |
1047 | However, to maintain consistency with the non-DWP case we pretend DWP | |
1048 | files contain virtual DWO files, and we assign each TU with one virtual | |
1049 | DWO file (generally based on the line and abbrev section offsets - | |
1050 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
1051 | |
1052 | struct dwo_file | |
1053 | { | |
0ac5b59e | 1054 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
1055 | For virtual DWO files the name is constructed from the section offsets |
1056 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
1057 | from related CU+TUs. */ | |
0ac5b59e DE |
1058 | const char *dwo_name; |
1059 | ||
1060 | /* The DW_AT_comp_dir attribute. */ | |
1061 | const char *comp_dir; | |
3019eac3 | 1062 | |
80626a55 DE |
1063 | /* The bfd, when the file is open. Otherwise this is NULL. |
1064 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
1065 | bfd *dbfd; | |
3019eac3 | 1066 | |
73869dc2 DE |
1067 | /* The sections that make up this DWO file. |
1068 | Remember that for virtual DWO files in DWP V2, these are virtual | |
1069 | sections (for lack of a better name). */ | |
3019eac3 DE |
1070 | struct dwo_sections sections; |
1071 | ||
33c5cd75 DB |
1072 | /* The CUs in the file. |
1073 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
1074 | an extension to handle LLVM's Link Time Optimization output (where | |
1075 | multiple source files may be compiled into a single object/dwo pair). */ | |
1076 | htab_t cus; | |
3019eac3 DE |
1077 | |
1078 | /* Table of TUs in the file. | |
1079 | Each element is a struct dwo_unit. */ | |
1080 | htab_t tus; | |
1081 | }; | |
1082 | ||
80626a55 DE |
1083 | /* These sections are what may appear in a DWP file. */ |
1084 | ||
1085 | struct dwp_sections | |
1086 | { | |
73869dc2 | 1087 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
1088 | struct dwarf2_section_info str; |
1089 | struct dwarf2_section_info cu_index; | |
1090 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
1091 | |
1092 | /* These are only used by DWP version 2 files. | |
1093 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
1094 | sections are referenced by section number, and are not recorded here. | |
1095 | In DWP version 2 there is at most one copy of all these sections, each | |
1096 | section being (effectively) comprised of the concatenation of all of the | |
1097 | individual sections that exist in the version 1 format. | |
1098 | To keep the code simple we treat each of these concatenated pieces as a | |
1099 | section itself (a virtual section?). */ | |
1100 | struct dwarf2_section_info abbrev; | |
1101 | struct dwarf2_section_info info; | |
1102 | struct dwarf2_section_info line; | |
1103 | struct dwarf2_section_info loc; | |
1104 | struct dwarf2_section_info macinfo; | |
1105 | struct dwarf2_section_info macro; | |
1106 | struct dwarf2_section_info str_offsets; | |
1107 | struct dwarf2_section_info types; | |
80626a55 DE |
1108 | }; |
1109 | ||
73869dc2 DE |
1110 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
1111 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 1112 | |
73869dc2 | 1113 | struct virtual_v1_dwo_sections |
80626a55 DE |
1114 | { |
1115 | struct dwarf2_section_info abbrev; | |
1116 | struct dwarf2_section_info line; | |
1117 | struct dwarf2_section_info loc; | |
1118 | struct dwarf2_section_info macinfo; | |
1119 | struct dwarf2_section_info macro; | |
1120 | struct dwarf2_section_info str_offsets; | |
1121 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 1122 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
1123 | struct dwarf2_section_info info_or_types; |
1124 | }; | |
1125 | ||
73869dc2 DE |
1126 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
1127 | In version 2, the sections of the DWO files are concatenated together | |
1128 | and stored in one section of that name. Thus each ELF section contains | |
1129 | several "virtual" sections. */ | |
1130 | ||
1131 | struct virtual_v2_dwo_sections | |
1132 | { | |
1133 | bfd_size_type abbrev_offset; | |
1134 | bfd_size_type abbrev_size; | |
1135 | ||
1136 | bfd_size_type line_offset; | |
1137 | bfd_size_type line_size; | |
1138 | ||
1139 | bfd_size_type loc_offset; | |
1140 | bfd_size_type loc_size; | |
1141 | ||
1142 | bfd_size_type macinfo_offset; | |
1143 | bfd_size_type macinfo_size; | |
1144 | ||
1145 | bfd_size_type macro_offset; | |
1146 | bfd_size_type macro_size; | |
1147 | ||
1148 | bfd_size_type str_offsets_offset; | |
1149 | bfd_size_type str_offsets_size; | |
1150 | ||
1151 | /* Each DWP hash table entry records one CU or one TU. | |
1152 | That is recorded here, and copied to dwo_unit.section. */ | |
1153 | bfd_size_type info_or_types_offset; | |
1154 | bfd_size_type info_or_types_size; | |
1155 | }; | |
1156 | ||
80626a55 DE |
1157 | /* Contents of DWP hash tables. */ |
1158 | ||
1159 | struct dwp_hash_table | |
1160 | { | |
73869dc2 | 1161 | uint32_t version, nr_columns; |
80626a55 | 1162 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
1163 | const gdb_byte *hash_table, *unit_table; |
1164 | union | |
1165 | { | |
1166 | struct | |
1167 | { | |
1168 | const gdb_byte *indices; | |
1169 | } v1; | |
1170 | struct | |
1171 | { | |
1172 | /* This is indexed by column number and gives the id of the section | |
1173 | in that column. */ | |
1174 | #define MAX_NR_V2_DWO_SECTIONS \ | |
1175 | (1 /* .debug_info or .debug_types */ \ | |
1176 | + 1 /* .debug_abbrev */ \ | |
1177 | + 1 /* .debug_line */ \ | |
1178 | + 1 /* .debug_loc */ \ | |
1179 | + 1 /* .debug_str_offsets */ \ | |
1180 | + 1 /* .debug_macro or .debug_macinfo */) | |
1181 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
1182 | const gdb_byte *offsets; | |
1183 | const gdb_byte *sizes; | |
1184 | } v2; | |
1185 | } section_pool; | |
80626a55 DE |
1186 | }; |
1187 | ||
1188 | /* Data for one DWP file. */ | |
1189 | ||
1190 | struct dwp_file | |
1191 | { | |
1192 | /* Name of the file. */ | |
1193 | const char *name; | |
1194 | ||
73869dc2 DE |
1195 | /* File format version. */ |
1196 | int version; | |
1197 | ||
93417882 | 1198 | /* The bfd. */ |
80626a55 DE |
1199 | bfd *dbfd; |
1200 | ||
1201 | /* Section info for this file. */ | |
1202 | struct dwp_sections sections; | |
1203 | ||
57d63ce2 | 1204 | /* Table of CUs in the file. */ |
80626a55 DE |
1205 | const struct dwp_hash_table *cus; |
1206 | ||
1207 | /* Table of TUs in the file. */ | |
1208 | const struct dwp_hash_table *tus; | |
1209 | ||
19ac8c2e DE |
1210 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
1211 | htab_t loaded_cus; | |
1212 | htab_t loaded_tus; | |
80626a55 | 1213 | |
73869dc2 DE |
1214 | /* Table to map ELF section numbers to their sections. |
1215 | This is only needed for the DWP V1 file format. */ | |
80626a55 DE |
1216 | unsigned int num_sections; |
1217 | asection **elf_sections; | |
1218 | }; | |
1219 | ||
36586728 TT |
1220 | /* This represents a '.dwz' file. */ |
1221 | ||
1222 | struct dwz_file | |
1223 | { | |
1224 | /* A dwz file can only contain a few sections. */ | |
1225 | struct dwarf2_section_info abbrev; | |
1226 | struct dwarf2_section_info info; | |
1227 | struct dwarf2_section_info str; | |
1228 | struct dwarf2_section_info line; | |
1229 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 1230 | struct dwarf2_section_info gdb_index; |
927aa2e7 | 1231 | struct dwarf2_section_info debug_names; |
36586728 TT |
1232 | |
1233 | /* The dwz's BFD. */ | |
1234 | bfd *dwz_bfd; | |
1235 | }; | |
1236 | ||
0963b4bd MS |
1237 | /* Struct used to pass misc. parameters to read_die_and_children, et |
1238 | al. which are used for both .debug_info and .debug_types dies. | |
1239 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 1240 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
1241 | |
1242 | struct die_reader_specs | |
1243 | { | |
a32a8923 | 1244 | /* The bfd of die_section. */ |
93311388 DE |
1245 | bfd* abfd; |
1246 | ||
1247 | /* The CU of the DIE we are parsing. */ | |
1248 | struct dwarf2_cu *cu; | |
1249 | ||
80626a55 | 1250 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
1251 | struct dwo_file *dwo_file; |
1252 | ||
dee91e82 | 1253 | /* The section the die comes from. |
3019eac3 | 1254 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
1255 | struct dwarf2_section_info *die_section; |
1256 | ||
1257 | /* die_section->buffer. */ | |
d521ce57 | 1258 | const gdb_byte *buffer; |
f664829e DE |
1259 | |
1260 | /* The end of the buffer. */ | |
1261 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
1262 | |
1263 | /* The value of the DW_AT_comp_dir attribute. */ | |
1264 | const char *comp_dir; | |
685af9cd TT |
1265 | |
1266 | /* The abbreviation table to use when reading the DIEs. */ | |
1267 | struct abbrev_table *abbrev_table; | |
93311388 DE |
1268 | }; |
1269 | ||
fd820528 | 1270 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 1271 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 1272 | const gdb_byte *info_ptr, |
dee91e82 DE |
1273 | struct die_info *comp_unit_die, |
1274 | int has_children, | |
1275 | void *data); | |
1276 | ||
ecfb656c PA |
1277 | /* A 1-based directory index. This is a strong typedef to prevent |
1278 | accidentally using a directory index as a 0-based index into an | |
1279 | array/vector. */ | |
1280 | enum class dir_index : unsigned int {}; | |
1281 | ||
1282 | /* Likewise, a 1-based file name index. */ | |
1283 | enum class file_name_index : unsigned int {}; | |
1284 | ||
52059ffd TT |
1285 | struct file_entry |
1286 | { | |
fff8551c PA |
1287 | file_entry () = default; |
1288 | ||
ecfb656c | 1289 | file_entry (const char *name_, dir_index d_index_, |
fff8551c PA |
1290 | unsigned int mod_time_, unsigned int length_) |
1291 | : name (name_), | |
ecfb656c | 1292 | d_index (d_index_), |
fff8551c PA |
1293 | mod_time (mod_time_), |
1294 | length (length_) | |
1295 | {} | |
1296 | ||
ecfb656c PA |
1297 | /* Return the include directory at D_INDEX stored in LH. Returns |
1298 | NULL if D_INDEX is out of bounds. */ | |
8c43009f PA |
1299 | const char *include_dir (const line_header *lh) const; |
1300 | ||
fff8551c PA |
1301 | /* The file name. Note this is an observing pointer. The memory is |
1302 | owned by debug_line_buffer. */ | |
1303 | const char *name {}; | |
1304 | ||
8c43009f | 1305 | /* The directory index (1-based). */ |
ecfb656c | 1306 | dir_index d_index {}; |
fff8551c PA |
1307 | |
1308 | unsigned int mod_time {}; | |
1309 | ||
1310 | unsigned int length {}; | |
1311 | ||
1312 | /* True if referenced by the Line Number Program. */ | |
1313 | bool included_p {}; | |
1314 | ||
83769d0b | 1315 | /* The associated symbol table, if any. */ |
fff8551c | 1316 | struct symtab *symtab {}; |
52059ffd TT |
1317 | }; |
1318 | ||
debd256d JB |
1319 | /* The line number information for a compilation unit (found in the |
1320 | .debug_line section) begins with a "statement program header", | |
1321 | which contains the following information. */ | |
1322 | struct line_header | |
1323 | { | |
fff8551c PA |
1324 | line_header () |
1325 | : offset_in_dwz {} | |
1326 | {} | |
1327 | ||
1328 | /* Add an entry to the include directory table. */ | |
1329 | void add_include_dir (const char *include_dir); | |
1330 | ||
1331 | /* Add an entry to the file name table. */ | |
ecfb656c | 1332 | void add_file_name (const char *name, dir_index d_index, |
fff8551c PA |
1333 | unsigned int mod_time, unsigned int length); |
1334 | ||
ecfb656c | 1335 | /* Return the include dir at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 1336 | is out of bounds. */ |
ecfb656c | 1337 | const char *include_dir_at (dir_index index) const |
8c43009f | 1338 | { |
ecfb656c PA |
1339 | /* Convert directory index number (1-based) to vector index |
1340 | (0-based). */ | |
1341 | size_t vec_index = to_underlying (index) - 1; | |
1342 | ||
1343 | if (vec_index >= include_dirs.size ()) | |
8c43009f | 1344 | return NULL; |
ecfb656c | 1345 | return include_dirs[vec_index]; |
8c43009f PA |
1346 | } |
1347 | ||
ecfb656c | 1348 | /* Return the file name at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 1349 | is out of bounds. */ |
ecfb656c | 1350 | file_entry *file_name_at (file_name_index index) |
8c43009f | 1351 | { |
ecfb656c PA |
1352 | /* Convert file name index number (1-based) to vector index |
1353 | (0-based). */ | |
1354 | size_t vec_index = to_underlying (index) - 1; | |
1355 | ||
1356 | if (vec_index >= file_names.size ()) | |
fff8551c | 1357 | return NULL; |
ecfb656c | 1358 | return &file_names[vec_index]; |
fff8551c PA |
1359 | } |
1360 | ||
1361 | /* Const version of the above. */ | |
1362 | const file_entry *file_name_at (unsigned int index) const | |
1363 | { | |
1364 | if (index >= file_names.size ()) | |
8c43009f PA |
1365 | return NULL; |
1366 | return &file_names[index]; | |
1367 | } | |
1368 | ||
527f3840 | 1369 | /* Offset of line number information in .debug_line section. */ |
9c541725 | 1370 | sect_offset sect_off {}; |
527f3840 JK |
1371 | |
1372 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
fff8551c PA |
1373 | unsigned offset_in_dwz : 1; /* Can't initialize bitfields in-class. */ |
1374 | ||
1375 | unsigned int total_length {}; | |
1376 | unsigned short version {}; | |
1377 | unsigned int header_length {}; | |
1378 | unsigned char minimum_instruction_length {}; | |
1379 | unsigned char maximum_ops_per_instruction {}; | |
1380 | unsigned char default_is_stmt {}; | |
1381 | int line_base {}; | |
1382 | unsigned char line_range {}; | |
1383 | unsigned char opcode_base {}; | |
debd256d JB |
1384 | |
1385 | /* standard_opcode_lengths[i] is the number of operands for the | |
1386 | standard opcode whose value is i. This means that | |
1387 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1388 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
fff8551c | 1389 | std::unique_ptr<unsigned char[]> standard_opcode_lengths; |
debd256d | 1390 | |
fff8551c PA |
1391 | /* The include_directories table. Note these are observing |
1392 | pointers. The memory is owned by debug_line_buffer. */ | |
1393 | std::vector<const char *> include_dirs; | |
debd256d | 1394 | |
fff8551c PA |
1395 | /* The file_names table. */ |
1396 | std::vector<file_entry> file_names; | |
debd256d JB |
1397 | |
1398 | /* The start and end of the statement program following this | |
6502dd73 | 1399 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fff8551c | 1400 | const gdb_byte *statement_program_start {}, *statement_program_end {}; |
debd256d | 1401 | }; |
c906108c | 1402 | |
fff8551c PA |
1403 | typedef std::unique_ptr<line_header> line_header_up; |
1404 | ||
8c43009f PA |
1405 | const char * |
1406 | file_entry::include_dir (const line_header *lh) const | |
1407 | { | |
ecfb656c | 1408 | return lh->include_dir_at (d_index); |
8c43009f PA |
1409 | } |
1410 | ||
c906108c | 1411 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1412 | need this much information. */ |
6f06d47b | 1413 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1414 | { |
6f06d47b YQ |
1415 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
1416 | ||
1417 | /* Disable assign but still keep copy ctor, which is needed | |
1418 | load_partial_dies. */ | |
1419 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1420 | ||
52356b79 YQ |
1421 | /* Adjust the partial die before generating a symbol for it. This |
1422 | function may set the is_external flag or change the DIE's | |
1423 | name. */ | |
1424 | void fixup (struct dwarf2_cu *cu); | |
1425 | ||
48fbe735 YQ |
1426 | /* Read a minimal amount of information into the minimal die |
1427 | structure. */ | |
1428 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1429 | const struct abbrev_info &abbrev, | |
1430 | const gdb_byte *info_ptr); | |
1431 | ||
72bf9492 | 1432 | /* Offset of this DIE. */ |
6f06d47b | 1433 | const sect_offset sect_off; |
72bf9492 DJ |
1434 | |
1435 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1436 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1437 | |
72bf9492 | 1438 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1439 | const unsigned int has_children : 1; |
1440 | ||
72bf9492 DJ |
1441 | unsigned int is_external : 1; |
1442 | unsigned int is_declaration : 1; | |
1443 | unsigned int has_type : 1; | |
1444 | unsigned int has_specification : 1; | |
1445 | unsigned int has_pc_info : 1; | |
481860b3 | 1446 | unsigned int may_be_inlined : 1; |
72bf9492 | 1447 | |
0c1b455e TT |
1448 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1449 | unsigned int main_subprogram : 1; | |
1450 | ||
72bf9492 DJ |
1451 | /* Flag set if the SCOPE field of this structure has been |
1452 | computed. */ | |
1453 | unsigned int scope_set : 1; | |
1454 | ||
fa4028e9 JB |
1455 | /* Flag set if the DIE has a byte_size attribute. */ |
1456 | unsigned int has_byte_size : 1; | |
1457 | ||
ff908ebf AW |
1458 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1459 | unsigned int has_const_value : 1; | |
1460 | ||
98bfdba5 PA |
1461 | /* Flag set if any of the DIE's children are template arguments. */ |
1462 | unsigned int has_template_arguments : 1; | |
1463 | ||
52356b79 | 1464 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1465 | unsigned int fixup_called : 1; |
1466 | ||
36586728 TT |
1467 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1468 | unsigned int is_dwz : 1; | |
1469 | ||
1470 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1471 | unsigned int spec_is_dwz : 1; | |
1472 | ||
72bf9492 | 1473 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1474 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1475 | const char *name = nullptr; |
72bf9492 | 1476 | |
abc72ce4 | 1477 | /* The linkage name, if present. */ |
6f06d47b | 1478 | const char *linkage_name = nullptr; |
abc72ce4 | 1479 | |
72bf9492 DJ |
1480 | /* The scope to prepend to our children. This is generally |
1481 | allocated on the comp_unit_obstack, so will disappear | |
1482 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1483 | const char *scope = nullptr; |
72bf9492 | 1484 | |
95554aad TT |
1485 | /* Some data associated with the partial DIE. The tag determines |
1486 | which field is live. */ | |
1487 | union | |
1488 | { | |
1489 | /* The location description associated with this DIE, if any. */ | |
1490 | struct dwarf_block *locdesc; | |
1491 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1492 | sect_offset sect_off; |
6f06d47b | 1493 | } d {}; |
72bf9492 DJ |
1494 | |
1495 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1496 | CORE_ADDR lowpc = 0; |
1497 | CORE_ADDR highpc = 0; | |
72bf9492 | 1498 | |
93311388 | 1499 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1500 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1501 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1502 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1503 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1504 | |
1505 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1506 | DW_AT_specification (or DW_AT_abstract_origin or | |
1507 | DW_AT_extension). */ | |
6f06d47b | 1508 | sect_offset spec_offset {}; |
72bf9492 DJ |
1509 | |
1510 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1511 | if any. */ | |
6f06d47b YQ |
1512 | struct partial_die_info *die_parent = nullptr; |
1513 | struct partial_die_info *die_child = nullptr; | |
1514 | struct partial_die_info *die_sibling = nullptr; | |
1515 | ||
1516 | friend struct partial_die_info * | |
1517 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1518 | ||
1519 | private: | |
1520 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1521 | partial_die_info (sect_offset sect_off) | |
1522 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1523 | { | |
1524 | } | |
1525 | ||
1526 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1527 | int has_children_) | |
1528 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1529 | { | |
1530 | is_external = 0; | |
1531 | is_declaration = 0; | |
1532 | has_type = 0; | |
1533 | has_specification = 0; | |
1534 | has_pc_info = 0; | |
1535 | may_be_inlined = 0; | |
1536 | main_subprogram = 0; | |
1537 | scope_set = 0; | |
1538 | has_byte_size = 0; | |
1539 | has_const_value = 0; | |
1540 | has_template_arguments = 0; | |
1541 | fixup_called = 0; | |
1542 | is_dwz = 0; | |
1543 | spec_is_dwz = 0; | |
1544 | } | |
c906108c SS |
1545 | }; |
1546 | ||
0963b4bd | 1547 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1548 | struct abbrev_info |
1549 | { | |
1550 | unsigned int number; /* number identifying abbrev */ | |
1551 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1552 | unsigned short has_children; /* boolean */ |
1553 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1554 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1555 | struct abbrev_info *next; /* next in chain */ | |
1556 | }; | |
1557 | ||
1558 | struct attr_abbrev | |
1559 | { | |
9d25dd43 DE |
1560 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1561 | ENUM_BITFIELD(dwarf_form) form : 16; | |
43988095 JK |
1562 | |
1563 | /* It is valid only if FORM is DW_FORM_implicit_const. */ | |
1564 | LONGEST implicit_const; | |
c906108c SS |
1565 | }; |
1566 | ||
433df2d4 DE |
1567 | /* Size of abbrev_table.abbrev_hash_table. */ |
1568 | #define ABBREV_HASH_SIZE 121 | |
1569 | ||
1570 | /* Top level data structure to contain an abbreviation table. */ | |
1571 | ||
1572 | struct abbrev_table | |
1573 | { | |
685af9cd TT |
1574 | explicit abbrev_table (sect_offset off) |
1575 | : sect_off (off) | |
1576 | { | |
4a17f768 | 1577 | m_abbrevs = |
685af9cd | 1578 | XOBNEWVEC (&abbrev_obstack, struct abbrev_info *, ABBREV_HASH_SIZE); |
4a17f768 | 1579 | memset (m_abbrevs, 0, ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); |
685af9cd TT |
1580 | } |
1581 | ||
1582 | DISABLE_COPY_AND_ASSIGN (abbrev_table); | |
1583 | ||
1584 | /* Allocate space for a struct abbrev_info object in | |
1585 | ABBREV_TABLE. */ | |
1586 | struct abbrev_info *alloc_abbrev (); | |
1587 | ||
1588 | /* Add an abbreviation to the table. */ | |
1589 | void add_abbrev (unsigned int abbrev_number, struct abbrev_info *abbrev); | |
1590 | ||
1591 | /* Look up an abbrev in the table. | |
1592 | Returns NULL if the abbrev is not found. */ | |
1593 | ||
1594 | struct abbrev_info *lookup_abbrev (unsigned int abbrev_number); | |
1595 | ||
1596 | ||
f4dc4d17 DE |
1597 | /* Where the abbrev table came from. |
1598 | This is used as a sanity check when the table is used. */ | |
685af9cd | 1599 | const sect_offset sect_off; |
433df2d4 DE |
1600 | |
1601 | /* Storage for the abbrev table. */ | |
685af9cd | 1602 | auto_obstack abbrev_obstack; |
433df2d4 | 1603 | |
4a17f768 YQ |
1604 | private: |
1605 | ||
433df2d4 DE |
1606 | /* Hash table of abbrevs. |
1607 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1608 | It could be statically allocated, but the previous code didn't so we | |
1609 | don't either. */ | |
4a17f768 | 1610 | struct abbrev_info **m_abbrevs; |
433df2d4 DE |
1611 | }; |
1612 | ||
685af9cd TT |
1613 | typedef std::unique_ptr<struct abbrev_table> abbrev_table_up; |
1614 | ||
0963b4bd | 1615 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1616 | struct attribute |
1617 | { | |
9d25dd43 | 1618 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1619 | ENUM_BITFIELD(dwarf_form) form : 15; |
1620 | ||
1621 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1622 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1623 | here for better struct attribute alignment. */ | |
1624 | unsigned int string_is_canonical : 1; | |
1625 | ||
b60c80d6 DJ |
1626 | union |
1627 | { | |
15d034d0 | 1628 | const char *str; |
b60c80d6 | 1629 | struct dwarf_block *blk; |
43bbcdc2 PH |
1630 | ULONGEST unsnd; |
1631 | LONGEST snd; | |
b60c80d6 | 1632 | CORE_ADDR addr; |
ac9ec31b | 1633 | ULONGEST signature; |
b60c80d6 DJ |
1634 | } |
1635 | u; | |
1636 | }; | |
1637 | ||
0963b4bd | 1638 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1639 | struct die_info |
1640 | { | |
76815b17 DE |
1641 | /* DWARF-2 tag for this DIE. */ |
1642 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1643 | ||
1644 | /* Number of attributes */ | |
98bfdba5 PA |
1645 | unsigned char num_attrs; |
1646 | ||
1647 | /* True if we're presently building the full type name for the | |
1648 | type derived from this DIE. */ | |
1649 | unsigned char building_fullname : 1; | |
76815b17 | 1650 | |
adde2bff DE |
1651 | /* True if this die is in process. PR 16581. */ |
1652 | unsigned char in_process : 1; | |
1653 | ||
76815b17 DE |
1654 | /* Abbrev number */ |
1655 | unsigned int abbrev; | |
1656 | ||
93311388 | 1657 | /* Offset in .debug_info or .debug_types section. */ |
9c541725 | 1658 | sect_offset sect_off; |
78ba4af6 JB |
1659 | |
1660 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1661 | points to this die's parent; CHILD points to the first child of | |
1662 | this node; and all the children of a given node are chained | |
4950bc1c | 1663 | together via their SIBLING fields. */ |
639d11d3 DC |
1664 | struct die_info *child; /* Its first child, if any. */ |
1665 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1666 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1667 | |
b60c80d6 DJ |
1668 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1669 | zero, but it's not common and zero-sized arrays are not | |
1670 | sufficiently portable C. */ | |
1671 | struct attribute attrs[1]; | |
c906108c SS |
1672 | }; |
1673 | ||
0963b4bd | 1674 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1675 | |
1676 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1677 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1678 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1679 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1680 | #define DW_SND(attr) ((attr)->u.snd) | |
1681 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1682 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1683 | |
0963b4bd | 1684 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1685 | struct dwarf_block |
1686 | { | |
56eb65bd | 1687 | size_t size; |
1d6edc3c JK |
1688 | |
1689 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1690 | const gdb_byte *data; |
c906108c SS |
1691 | }; |
1692 | ||
c906108c SS |
1693 | #ifndef ATTR_ALLOC_CHUNK |
1694 | #define ATTR_ALLOC_CHUNK 4 | |
1695 | #endif | |
1696 | ||
c906108c SS |
1697 | /* Allocate fields for structs, unions and enums in this size. */ |
1698 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1699 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1700 | #endif | |
1701 | ||
c906108c SS |
1702 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1703 | but this would require a corresponding change in unpack_field_as_long | |
1704 | and friends. */ | |
1705 | static int bits_per_byte = 8; | |
1706 | ||
2ddeaf8a TT |
1707 | /* When reading a variant or variant part, we track a bit more |
1708 | information about the field, and store it in an object of this | |
1709 | type. */ | |
1710 | ||
1711 | struct variant_field | |
1712 | { | |
1713 | /* If we see a DW_TAG_variant, then this will be the discriminant | |
1714 | value. */ | |
1715 | ULONGEST discriminant_value; | |
1716 | /* If we see a DW_TAG_variant, then this will be set if this is the | |
1717 | default branch. */ | |
1718 | bool default_branch; | |
1719 | /* While reading a DW_TAG_variant_part, this will be set if this | |
1720 | field is the discriminant. */ | |
1721 | bool is_discriminant; | |
1722 | }; | |
1723 | ||
52059ffd TT |
1724 | struct nextfield |
1725 | { | |
be2daae6 TT |
1726 | int accessibility = 0; |
1727 | int virtuality = 0; | |
2ddeaf8a | 1728 | /* Extra information to describe a variant or variant part. */ |
be2daae6 TT |
1729 | struct variant_field variant {}; |
1730 | struct field field {}; | |
52059ffd TT |
1731 | }; |
1732 | ||
1733 | struct fnfieldlist | |
1734 | { | |
be2daae6 TT |
1735 | const char *name = nullptr; |
1736 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1737 | }; |
1738 | ||
c906108c SS |
1739 | /* The routines that read and process dies for a C struct or C++ class |
1740 | pass lists of data member fields and lists of member function fields | |
1741 | in an instance of a field_info structure, as defined below. */ | |
1742 | struct field_info | |
c5aa993b | 1743 | { |
0963b4bd | 1744 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1745 | std::vector<struct nextfield> fields; |
1746 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1747 | |
7d0ccb61 | 1748 | /* Number of fields (including baseclasses). */ |
be2daae6 | 1749 | int nfields = 0; |
c906108c | 1750 | |
c5aa993b | 1751 | /* Set if the accesibility of one of the fields is not public. */ |
be2daae6 | 1752 | int non_public_fields = 0; |
c906108c | 1753 | |
c5aa993b JM |
1754 | /* Member function fieldlist array, contains name of possibly overloaded |
1755 | member function, number of overloaded member functions and a pointer | |
1756 | to the head of the member function field chain. */ | |
be2daae6 | 1757 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1758 | |
1759 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1760 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1761 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1762 | |
1763 | /* Nested types defined by this class and the number of elements in this | |
1764 | list. */ | |
be2daae6 | 1765 | std::vector<struct decl_field> nested_types_list; |
c5aa993b | 1766 | }; |
c906108c | 1767 | |
10b3939b DJ |
1768 | /* One item on the queue of compilation units to read in full symbols |
1769 | for. */ | |
1770 | struct dwarf2_queue_item | |
1771 | { | |
1772 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1773 | enum language pretend_language; |
10b3939b DJ |
1774 | struct dwarf2_queue_item *next; |
1775 | }; | |
1776 | ||
1777 | /* The current queue. */ | |
1778 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1779 | ||
ae038cb0 DJ |
1780 | /* Loaded secondary compilation units are kept in memory until they |
1781 | have not been referenced for the processing of this many | |
1782 | compilation units. Set this to zero to disable caching. Cache | |
1783 | sizes of up to at least twenty will improve startup time for | |
1784 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1785 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1786 | static void |
b4f54984 DE |
1787 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1788 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1789 | { |
3e43a32a | 1790 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1791 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1792 | value); |
1793 | } | |
4390d890 | 1794 | \f |
c906108c SS |
1795 | /* local function prototypes */ |
1796 | ||
a32a8923 DE |
1797 | static const char *get_section_name (const struct dwarf2_section_info *); |
1798 | ||
1799 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1800 | ||
918dd910 JK |
1801 | static void dwarf2_find_base_address (struct die_info *die, |
1802 | struct dwarf2_cu *cu); | |
1803 | ||
0018ea6f DE |
1804 | static struct partial_symtab *create_partial_symtab |
1805 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1806 | ||
f1902523 JK |
1807 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1808 | const gdb_byte *info_ptr, | |
1809 | struct die_info *type_unit_die, | |
1810 | int has_children, void *data); | |
1811 | ||
ed2dc618 SM |
1812 | static void dwarf2_build_psymtabs_hard |
1813 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1814 | |
72bf9492 DJ |
1815 | static void scan_partial_symbols (struct partial_die_info *, |
1816 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1817 | int, struct dwarf2_cu *); |
c906108c | 1818 | |
72bf9492 DJ |
1819 | static void add_partial_symbol (struct partial_die_info *, |
1820 | struct dwarf2_cu *); | |
63d06c5c | 1821 | |
72bf9492 DJ |
1822 | static void add_partial_namespace (struct partial_die_info *pdi, |
1823 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1824 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1825 | |
5d7cb8df | 1826 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1827 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1828 | struct dwarf2_cu *cu); |
1829 | ||
72bf9492 DJ |
1830 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1831 | struct dwarf2_cu *cu); | |
91c24f0a | 1832 | |
bc30ff58 JB |
1833 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1834 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1835 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1836 | |
257e7a09 YQ |
1837 | static void dwarf2_read_symtab (struct partial_symtab *, |
1838 | struct objfile *); | |
c906108c | 1839 | |
a14ed312 | 1840 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1841 | |
685af9cd | 1842 | static abbrev_table_up abbrev_table_read_table |
ed2dc618 SM |
1843 | (struct dwarf2_per_objfile *dwarf2_per_objfile, struct dwarf2_section_info *, |
1844 | sect_offset); | |
433df2d4 | 1845 | |
d521ce57 | 1846 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1847 | |
dee91e82 | 1848 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1849 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1850 | |
36586728 | 1851 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1852 | struct dwarf2_cu *); |
72bf9492 | 1853 | |
d521ce57 TT |
1854 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1855 | struct attribute *, struct attr_abbrev *, | |
1856 | const gdb_byte *); | |
a8329558 | 1857 | |
a1855c1d | 1858 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1859 | |
a1855c1d | 1860 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1861 | |
a1855c1d | 1862 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1863 | |
a1855c1d | 1864 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1865 | |
a1855c1d | 1866 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1867 | |
d521ce57 | 1868 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1869 | unsigned int *); |
c906108c | 1870 | |
d521ce57 | 1871 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1872 | |
1873 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1874 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1875 | unsigned int *, unsigned int *); |
613e1657 | 1876 | |
d521ce57 TT |
1877 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1878 | const struct comp_unit_head *, | |
c764a876 DE |
1879 | unsigned int *); |
1880 | ||
d521ce57 | 1881 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1882 | |
ed2dc618 SM |
1883 | static sect_offset read_abbrev_offset |
1884 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1885 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1886 | |
d521ce57 | 1887 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1888 | |
d521ce57 | 1889 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1890 | |
ed2dc618 SM |
1891 | static const char *read_indirect_string |
1892 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1893 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1894 | |
ed2dc618 SM |
1895 | static const char *read_indirect_line_string |
1896 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1897 | const struct comp_unit_head *, unsigned int *); | |
36586728 | 1898 | |
ed2dc618 SM |
1899 | static const char *read_indirect_string_at_offset |
1900 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, | |
1901 | LONGEST str_offset); | |
927aa2e7 | 1902 | |
ed2dc618 SM |
1903 | static const char *read_indirect_string_from_dwz |
1904 | (struct objfile *objfile, struct dwz_file *, LONGEST); | |
c906108c | 1905 | |
d521ce57 | 1906 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1907 | |
d521ce57 TT |
1908 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1909 | const gdb_byte *, | |
3019eac3 DE |
1910 | unsigned int *); |
1911 | ||
d521ce57 | 1912 | static const char *read_str_index (const struct die_reader_specs *reader, |
342587c4 | 1913 | ULONGEST str_index); |
3019eac3 | 1914 | |
e142c38c | 1915 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1916 | |
e142c38c DJ |
1917 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1918 | struct dwarf2_cu *); | |
c906108c | 1919 | |
348e048f | 1920 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1921 | unsigned int); |
348e048f | 1922 | |
7d45c7c3 KB |
1923 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1924 | struct dwarf2_cu *cu); | |
1925 | ||
05cf31d1 JB |
1926 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1927 | struct dwarf2_cu *cu); | |
1928 | ||
e142c38c | 1929 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1930 | |
e142c38c | 1931 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1932 | struct dwarf2_cu **); |
63d06c5c | 1933 | |
9c541725 | 1934 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1935 | struct dwarf2_cu *cu); |
debd256d | 1936 | |
f3f5162e | 1937 | static void dwarf_decode_lines (struct line_header *, const char *, |
c3b7b696 | 1938 | struct dwarf2_cu *, struct partial_symtab *, |
527f3840 | 1939 | CORE_ADDR, int decode_mapping); |
c906108c | 1940 | |
4d663531 | 1941 | static void dwarf2_start_subfile (const char *, const char *); |
c906108c | 1942 | |
43f3e411 DE |
1943 | static struct compunit_symtab *dwarf2_start_symtab (struct dwarf2_cu *, |
1944 | const char *, const char *, | |
1945 | CORE_ADDR); | |
f4dc4d17 | 1946 | |
a14ed312 | 1947 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1948 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1949 | |
ff39bb5e | 1950 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1951 | struct dwarf2_cu *); |
c906108c | 1952 | |
ff39bb5e | 1953 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1954 | struct type *type, |
1955 | const char *name, | |
1956 | struct obstack *obstack, | |
12df843f | 1957 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1958 | const gdb_byte **bytes, |
98bfdba5 | 1959 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1960 | |
e7c27a73 | 1961 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1962 | |
b4ba55a1 JB |
1963 | static int need_gnat_info (struct dwarf2_cu *); |
1964 | ||
3e43a32a MS |
1965 | static struct type *die_descriptive_type (struct die_info *, |
1966 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1967 | |
1968 | static void set_descriptive_type (struct type *, struct die_info *, | |
1969 | struct dwarf2_cu *); | |
1970 | ||
e7c27a73 DJ |
1971 | static struct type *die_containing_type (struct die_info *, |
1972 | struct dwarf2_cu *); | |
c906108c | 1973 | |
ff39bb5e | 1974 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1975 | struct dwarf2_cu *); |
c906108c | 1976 | |
f792889a | 1977 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1978 | |
673bfd45 DE |
1979 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1980 | ||
0d5cff50 | 1981 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1982 | |
6e70227d | 1983 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1984 | const char *suffix, int physname, |
1985 | struct dwarf2_cu *cu); | |
63d06c5c | 1986 | |
e7c27a73 | 1987 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1988 | |
348e048f DE |
1989 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1990 | ||
e7c27a73 | 1991 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1992 | |
e7c27a73 | 1993 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1994 | |
96408a79 SA |
1995 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1996 | ||
71a3c369 TT |
1997 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1998 | ||
ff013f42 JK |
1999 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
2000 | struct dwarf2_cu *, struct partial_symtab *); | |
2001 | ||
3a2b436a | 2002 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 2003 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
2004 | enum pc_bounds_kind |
2005 | { | |
e385593e | 2006 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
2007 | PC_BOUNDS_NOT_PRESENT, |
2008 | ||
e385593e JK |
2009 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
2010 | were present but they do not form a valid range of PC addresses. */ | |
2011 | PC_BOUNDS_INVALID, | |
2012 | ||
3a2b436a JK |
2013 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
2014 | PC_BOUNDS_RANGES, | |
2015 | ||
2016 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
2017 | PC_BOUNDS_HIGH_LOW, | |
2018 | }; | |
2019 | ||
2020 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
2021 | CORE_ADDR *, CORE_ADDR *, | |
2022 | struct dwarf2_cu *, | |
2023 | struct partial_symtab *); | |
c906108c | 2024 | |
fae299cd DC |
2025 | static void get_scope_pc_bounds (struct die_info *, |
2026 | CORE_ADDR *, CORE_ADDR *, | |
2027 | struct dwarf2_cu *); | |
2028 | ||
801e3a5b JB |
2029 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
2030 | CORE_ADDR, struct dwarf2_cu *); | |
2031 | ||
a14ed312 | 2032 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 2033 | struct dwarf2_cu *); |
c906108c | 2034 | |
a14ed312 | 2035 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 2036 | struct type *, struct dwarf2_cu *); |
c906108c | 2037 | |
a14ed312 | 2038 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 2039 | struct die_info *, struct type *, |
e7c27a73 | 2040 | struct dwarf2_cu *); |
c906108c | 2041 | |
a14ed312 | 2042 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
2043 | struct type *, |
2044 | struct dwarf2_cu *); | |
c906108c | 2045 | |
134d01f1 | 2046 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 2047 | |
e7c27a73 | 2048 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 2049 | |
e7c27a73 | 2050 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 2051 | |
5d7cb8df JK |
2052 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
2053 | ||
22cee43f PMR |
2054 | static struct using_direct **using_directives (enum language); |
2055 | ||
27aa8d6a SW |
2056 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
2057 | ||
74921315 KS |
2058 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
2059 | ||
f55ee35c JK |
2060 | static struct type *read_module_type (struct die_info *die, |
2061 | struct dwarf2_cu *cu); | |
2062 | ||
38d518c9 | 2063 | static const char *namespace_name (struct die_info *die, |
e142c38c | 2064 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 2065 | |
134d01f1 | 2066 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 2067 | |
e7c27a73 | 2068 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 2069 | |
6e70227d | 2070 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
2071 | struct dwarf2_cu *); |
2072 | ||
bf6af496 | 2073 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 2074 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 2075 | struct die_info *); |
639d11d3 | 2076 | |
dee91e82 | 2077 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
2078 | const gdb_byte *info_ptr, |
2079 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
2080 | struct die_info *parent); |
2081 | ||
d521ce57 TT |
2082 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
2083 | struct die_info **, const gdb_byte *, | |
2084 | int *, int); | |
3019eac3 | 2085 | |
d521ce57 TT |
2086 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
2087 | struct die_info **, const gdb_byte *, | |
2088 | int *); | |
93311388 | 2089 | |
e7c27a73 | 2090 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 2091 | |
15d034d0 TT |
2092 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
2093 | struct obstack *); | |
71c25dea | 2094 | |
15d034d0 | 2095 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 2096 | |
15d034d0 | 2097 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
2098 | struct die_info *die, |
2099 | struct dwarf2_cu *cu); | |
2100 | ||
ca69b9e6 DE |
2101 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
2102 | struct dwarf2_cu *cu); | |
2103 | ||
e142c38c | 2104 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 2105 | struct dwarf2_cu **); |
9219021c | 2106 | |
f39c6ffd | 2107 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 2108 | |
f39c6ffd | 2109 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 2110 | |
f39c6ffd | 2111 | static const char *dwarf_form_name (unsigned int); |
c906108c | 2112 | |
a121b7c1 | 2113 | static const char *dwarf_bool_name (unsigned int); |
c906108c | 2114 | |
f39c6ffd | 2115 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 2116 | |
f9aca02d | 2117 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 2118 | |
d97bc12b DE |
2119 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
2120 | ||
2121 | static void dump_die_for_error (struct die_info *); | |
2122 | ||
2123 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
2124 | struct die_info *); | |
c906108c | 2125 | |
d97bc12b | 2126 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 2127 | |
51545339 | 2128 | static void store_in_ref_table (struct die_info *, |
10b3939b | 2129 | struct dwarf2_cu *); |
c906108c | 2130 | |
ff39bb5e | 2131 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 2132 | |
ff39bb5e | 2133 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 2134 | |
348e048f | 2135 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 2136 | const struct attribute *, |
348e048f DE |
2137 | struct dwarf2_cu **); |
2138 | ||
10b3939b | 2139 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 2140 | const struct attribute *, |
f2f0e013 | 2141 | struct dwarf2_cu **); |
c906108c | 2142 | |
348e048f | 2143 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 2144 | const struct attribute *, |
348e048f DE |
2145 | struct dwarf2_cu **); |
2146 | ||
ac9ec31b DE |
2147 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
2148 | struct dwarf2_cu *); | |
2149 | ||
2150 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 2151 | const struct attribute *, |
ac9ec31b DE |
2152 | struct dwarf2_cu *); |
2153 | ||
e5fe5e75 | 2154 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 2155 | |
52dc124a | 2156 | static void read_signatured_type (struct signatured_type *); |
348e048f | 2157 | |
63e43d3a PMR |
2158 | static int attr_to_dynamic_prop (const struct attribute *attr, |
2159 | struct die_info *die, struct dwarf2_cu *cu, | |
2160 | struct dynamic_prop *prop); | |
2161 | ||
c906108c SS |
2162 | /* memory allocation interface */ |
2163 | ||
7b5a2f43 | 2164 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 2165 | |
b60c80d6 | 2166 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 2167 | |
43f3e411 | 2168 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 2169 | |
6e5a29e1 | 2170 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 2171 | |
6e5a29e1 | 2172 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 2173 | |
6e5a29e1 | 2174 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 2175 | |
6e5a29e1 | 2176 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 2177 | |
8cf6f0b1 TT |
2178 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
2179 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 2180 | const struct attribute *attr); |
8cf6f0b1 | 2181 | |
ff39bb5e | 2182 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 2183 | struct symbol *sym, |
f1e6e072 TT |
2184 | struct dwarf2_cu *cu, |
2185 | int is_block); | |
4c2df51b | 2186 | |
d521ce57 TT |
2187 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
2188 | const gdb_byte *info_ptr, | |
2189 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 2190 | |
72bf9492 DJ |
2191 | static hashval_t partial_die_hash (const void *item); |
2192 | ||
2193 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
2194 | ||
ae038cb0 | 2195 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
2196 | (sect_offset sect_off, unsigned int offset_in_dwz, |
2197 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 2198 | |
9816fde3 | 2199 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
2200 | struct die_info *comp_unit_die, |
2201 | enum language pretend_language); | |
93311388 | 2202 | |
ae038cb0 DJ |
2203 | static void free_cached_comp_units (void *); |
2204 | ||
ed2dc618 | 2205 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 2206 | |
dee91e82 | 2207 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 2208 | |
f792889a DJ |
2209 | static struct type *set_die_type (struct die_info *, struct type *, |
2210 | struct dwarf2_cu *); | |
1c379e20 | 2211 | |
ed2dc618 | 2212 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 2213 | |
ed2dc618 | 2214 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 2215 | |
95554aad TT |
2216 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
2217 | enum language); | |
10b3939b | 2218 | |
95554aad TT |
2219 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
2220 | enum language); | |
10b3939b | 2221 | |
f4dc4d17 DE |
2222 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
2223 | enum language); | |
2224 | ||
10b3939b DJ |
2225 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
2226 | struct dwarf2_per_cu_data *); | |
2227 | ||
ae038cb0 DJ |
2228 | static void dwarf2_mark (struct dwarf2_cu *); |
2229 | ||
2230 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
2231 | ||
b64f50a1 | 2232 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 2233 | struct dwarf2_per_cu_data *); |
673bfd45 | 2234 | |
f792889a | 2235 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 2236 | |
95554aad TT |
2237 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
2238 | enum language pretend_language); | |
2239 | ||
ed2dc618 | 2240 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 2241 | |
b303c6f6 AB |
2242 | /* Class, the destructor of which frees all allocated queue entries. This |
2243 | will only have work to do if an error was thrown while processing the | |
2244 | dwarf. If no error was thrown then the queue entries should have all | |
2245 | been processed, and freed, as we went along. */ | |
2246 | ||
2247 | class dwarf2_queue_guard | |
2248 | { | |
2249 | public: | |
2250 | dwarf2_queue_guard () = default; | |
2251 | ||
2252 | /* Free any entries remaining on the queue. There should only be | |
2253 | entries left if we hit an error while processing the dwarf. */ | |
2254 | ~dwarf2_queue_guard () | |
2255 | { | |
2256 | struct dwarf2_queue_item *item, *last; | |
2257 | ||
2258 | item = dwarf2_queue; | |
2259 | while (item) | |
2260 | { | |
2261 | /* Anything still marked queued is likely to be in an | |
2262 | inconsistent state, so discard it. */ | |
2263 | if (item->per_cu->queued) | |
2264 | { | |
2265 | if (item->per_cu->cu != NULL) | |
2266 | free_one_cached_comp_unit (item->per_cu); | |
2267 | item->per_cu->queued = 0; | |
2268 | } | |
2269 | ||
2270 | last = item; | |
2271 | item = item->next; | |
2272 | xfree (last); | |
2273 | } | |
2274 | ||
2275 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
2276 | } | |
2277 | }; | |
2278 | ||
d721ba37 PA |
2279 | /* The return type of find_file_and_directory. Note, the enclosed |
2280 | string pointers are only valid while this object is valid. */ | |
2281 | ||
2282 | struct file_and_directory | |
2283 | { | |
2284 | /* The filename. This is never NULL. */ | |
2285 | const char *name; | |
2286 | ||
2287 | /* The compilation directory. NULL if not known. If we needed to | |
2288 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
2289 | points directly to the DW_AT_comp_dir string attribute owned by | |
2290 | the obstack that owns the DIE. */ | |
2291 | const char *comp_dir; | |
2292 | ||
2293 | /* If we needed to build a new string for comp_dir, this is what | |
2294 | owns the storage. */ | |
2295 | std::string comp_dir_storage; | |
2296 | }; | |
2297 | ||
2298 | static file_and_directory find_file_and_directory (struct die_info *die, | |
2299 | struct dwarf2_cu *cu); | |
9291a0cd TT |
2300 | |
2301 | static char *file_full_name (int file, struct line_header *lh, | |
2302 | const char *comp_dir); | |
2303 | ||
43988095 JK |
2304 | /* Expected enum dwarf_unit_type for read_comp_unit_head. */ |
2305 | enum class rcuh_kind { COMPILE, TYPE }; | |
2306 | ||
d521ce57 | 2307 | static const gdb_byte *read_and_check_comp_unit_head |
ed2dc618 SM |
2308 | (struct dwarf2_per_objfile* dwarf2_per_objfile, |
2309 | struct comp_unit_head *header, | |
36586728 | 2310 | struct dwarf2_section_info *section, |
d521ce57 | 2311 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
43988095 | 2312 | rcuh_kind section_kind); |
36586728 | 2313 | |
fd820528 | 2314 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
2315 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
2316 | int use_existing_cu, int keep, | |
3019eac3 DE |
2317 | die_reader_func_ftype *die_reader_func, void *data); |
2318 | ||
dee91e82 DE |
2319 | static void init_cutu_and_read_dies_simple |
2320 | (struct dwarf2_per_cu_data *this_cu, | |
2321 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 2322 | |
673bfd45 | 2323 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 2324 | |
3019eac3 DE |
2325 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
2326 | ||
57d63ce2 | 2327 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
2328 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2329 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 2330 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 2331 | |
ed2dc618 SM |
2332 | static struct dwp_file *get_dwp_file |
2333 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 2334 | |
3019eac3 | 2335 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 2336 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
2337 | |
2338 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 2339 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 2340 | |
89e63ee4 DE |
2341 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
2342 | ||
3019eac3 DE |
2343 | static void free_dwo_file_cleanup (void *); |
2344 | ||
ed2dc618 SM |
2345 | struct free_dwo_file_cleanup_data |
2346 | { | |
2347 | struct dwo_file *dwo_file; | |
2348 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
2349 | }; | |
2350 | ||
2351 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
95554aad | 2352 | |
1b80a9fa | 2353 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
2354 | |
2355 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
2356 | \f |
2357 | /* Various complaints about symbol reading that don't abort the process. */ | |
2358 | ||
2359 | static void | |
2360 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2361 | { | |
2362 | complaint (&symfile_complaints, | |
2363 | _("statement list doesn't fit in .debug_line section")); | |
2364 | } | |
2365 | ||
2366 | static void | |
2367 | dwarf2_debug_line_missing_file_complaint (void) | |
2368 | { | |
2369 | complaint (&symfile_complaints, | |
2370 | _(".debug_line section has line data without a file")); | |
2371 | } | |
2372 | ||
2373 | static void | |
2374 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
2375 | { | |
2376 | complaint (&symfile_complaints, | |
2377 | _(".debug_line section has line " | |
2378 | "program sequence without an end")); | |
2379 | } | |
2380 | ||
2381 | static void | |
2382 | dwarf2_complex_location_expr_complaint (void) | |
2383 | { | |
2384 | complaint (&symfile_complaints, _("location expression too complex")); | |
2385 | } | |
2386 | ||
2387 | static void | |
2388 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
2389 | int arg3) | |
2390 | { | |
2391 | complaint (&symfile_complaints, | |
2392 | _("const value length mismatch for '%s', got %d, expected %d"), | |
2393 | arg1, arg2, arg3); | |
2394 | } | |
2395 | ||
2396 | static void | |
2397 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
2398 | { | |
2399 | complaint (&symfile_complaints, | |
2400 | _("debug info runs off end of %s section" | |
2401 | " [in module %s]"), | |
a32a8923 DE |
2402 | get_section_name (section), |
2403 | get_section_file_name (section)); | |
4390d890 | 2404 | } |
1b80a9fa | 2405 | |
4390d890 DE |
2406 | static void |
2407 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
2408 | { | |
2409 | complaint (&symfile_complaints, | |
2410 | _("macro debug info contains a " | |
2411 | "malformed macro definition:\n`%s'"), | |
2412 | arg1); | |
2413 | } | |
2414 | ||
2415 | static void | |
2416 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
2417 | { | |
2418 | complaint (&symfile_complaints, | |
2419 | _("invalid attribute class or form for '%s' in '%s'"), | |
2420 | arg1, arg2); | |
2421 | } | |
527f3840 JK |
2422 | |
2423 | /* Hash function for line_header_hash. */ | |
2424 | ||
2425 | static hashval_t | |
2426 | line_header_hash (const struct line_header *ofs) | |
2427 | { | |
9c541725 | 2428 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
2429 | } |
2430 | ||
2431 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
2432 | ||
2433 | static hashval_t | |
2434 | line_header_hash_voidp (const void *item) | |
2435 | { | |
9a3c8263 | 2436 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
2437 | |
2438 | return line_header_hash (ofs); | |
2439 | } | |
2440 | ||
2441 | /* Equality function for line_header_hash. */ | |
2442 | ||
2443 | static int | |
2444 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
2445 | { | |
9a3c8263 SM |
2446 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
2447 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 2448 | |
9c541725 | 2449 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
2450 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
2451 | } | |
2452 | ||
4390d890 | 2453 | \f |
9291a0cd | 2454 | |
31aa7e4e JB |
2455 | /* Read the given attribute value as an address, taking the attribute's |
2456 | form into account. */ | |
2457 | ||
2458 | static CORE_ADDR | |
2459 | attr_value_as_address (struct attribute *attr) | |
2460 | { | |
2461 | CORE_ADDR addr; | |
2462 | ||
2463 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_GNU_addr_index) | |
2464 | { | |
2465 | /* Aside from a few clearly defined exceptions, attributes that | |
2466 | contain an address must always be in DW_FORM_addr form. | |
2467 | Unfortunately, some compilers happen to be violating this | |
2468 | requirement by encoding addresses using other forms, such | |
2469 | as DW_FORM_data4 for example. For those broken compilers, | |
2470 | we try to do our best, without any guarantee of success, | |
2471 | to interpret the address correctly. It would also be nice | |
2472 | to generate a complaint, but that would require us to maintain | |
2473 | a list of legitimate cases where a non-address form is allowed, | |
2474 | as well as update callers to pass in at least the CU's DWARF | |
2475 | version. This is more overhead than what we're willing to | |
2476 | expand for a pretty rare case. */ | |
2477 | addr = DW_UNSND (attr); | |
2478 | } | |
2479 | else | |
2480 | addr = DW_ADDR (attr); | |
2481 | ||
2482 | return addr; | |
2483 | } | |
2484 | ||
9291a0cd | 2485 | /* The suffix for an index file. */ |
437afbb8 JK |
2486 | #define INDEX4_SUFFIX ".gdb-index" |
2487 | #define INDEX5_SUFFIX ".debug_names" | |
2488 | #define DEBUG_STR_SUFFIX ".debug_str" | |
9291a0cd | 2489 | |
330cdd98 PA |
2490 | /* See declaration. */ |
2491 | ||
2492 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
2493 | const dwarf2_debug_sections *names) | |
2494 | : objfile (objfile_) | |
2495 | { | |
2496 | if (names == NULL) | |
2497 | names = &dwarf2_elf_names; | |
2498 | ||
2499 | bfd *obfd = objfile->obfd; | |
2500 | ||
2501 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
2502 | locate_sections (obfd, sec, *names); | |
2503 | } | |
2504 | ||
fc8e7e75 SM |
2505 | static void free_dwo_files (htab_t dwo_files, struct objfile *objfile); |
2506 | ||
330cdd98 PA |
2507 | dwarf2_per_objfile::~dwarf2_per_objfile () |
2508 | { | |
2509 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
2510 | free_cached_comp_units (); | |
2511 | ||
2512 | if (quick_file_names_table) | |
2513 | htab_delete (quick_file_names_table); | |
2514 | ||
2515 | if (line_header_hash) | |
2516 | htab_delete (line_header_hash); | |
2517 | ||
fc8e7e75 SM |
2518 | for (int ix = 0; ix < n_comp_units; ++ix) |
2519 | VEC_free (dwarf2_per_cu_ptr, all_comp_units[ix]->imported_symtabs); | |
2520 | ||
2521 | for (int ix = 0; ix < n_type_units; ++ix) | |
2522 | VEC_free (dwarf2_per_cu_ptr, | |
2523 | all_type_units[ix]->per_cu.imported_symtabs); | |
2524 | xfree (all_type_units); | |
2525 | ||
2526 | VEC_free (dwarf2_section_info_def, types); | |
2527 | ||
2528 | if (dwo_files != NULL) | |
2529 | free_dwo_files (dwo_files, objfile); | |
2530 | if (dwp_file != NULL) | |
2531 | gdb_bfd_unref (dwp_file->dbfd); | |
2532 | ||
2533 | if (dwz_file != NULL && dwz_file->dwz_bfd) | |
2534 | gdb_bfd_unref (dwz_file->dwz_bfd); | |
2535 | ||
2536 | if (index_table != NULL) | |
2537 | index_table->~mapped_index (); | |
2538 | ||
330cdd98 PA |
2539 | /* Everything else should be on the objfile obstack. */ |
2540 | } | |
2541 | ||
2542 | /* See declaration. */ | |
2543 | ||
2544 | void | |
2545 | dwarf2_per_objfile::free_cached_comp_units () | |
2546 | { | |
2547 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
2548 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
2549 | while (per_cu != NULL) | |
2550 | { | |
2551 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
2552 | ||
fcd3b13d | 2553 | delete per_cu->cu; |
330cdd98 PA |
2554 | *last_chain = next_cu; |
2555 | per_cu = next_cu; | |
2556 | } | |
2557 | } | |
2558 | ||
c906108c | 2559 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2560 | information and return true if we have enough to do something. |
2561 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
2562 | ELF names are used. */ | |
c906108c SS |
2563 | |
2564 | int | |
251d32d9 TG |
2565 | dwarf2_has_info (struct objfile *objfile, |
2566 | const struct dwarf2_debug_sections *names) | |
c906108c | 2567 | { |
97cbe998 SDJ |
2568 | if (objfile->flags & OBJF_READNEVER) |
2569 | return 0; | |
2570 | ||
ed2dc618 SM |
2571 | struct dwarf2_per_objfile *dwarf2_per_objfile |
2572 | = get_dwarf2_per_objfile (objfile); | |
2573 | ||
2574 | if (dwarf2_per_objfile == NULL) | |
be391dca TT |
2575 | { |
2576 | /* Initialize per-objfile state. */ | |
fd90ace4 YQ |
2577 | dwarf2_per_objfile |
2578 | = new (&objfile->objfile_obstack) struct dwarf2_per_objfile (objfile, | |
2579 | names); | |
ed2dc618 | 2580 | set_dwarf2_per_objfile (objfile, dwarf2_per_objfile); |
be391dca | 2581 | } |
73869dc2 | 2582 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 2583 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 2584 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 2585 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
2586 | } |
2587 | ||
2588 | /* Return the containing section of virtual section SECTION. */ | |
2589 | ||
2590 | static struct dwarf2_section_info * | |
2591 | get_containing_section (const struct dwarf2_section_info *section) | |
2592 | { | |
2593 | gdb_assert (section->is_virtual); | |
2594 | return section->s.containing_section; | |
c906108c SS |
2595 | } |
2596 | ||
a32a8923 DE |
2597 | /* Return the bfd owner of SECTION. */ |
2598 | ||
2599 | static struct bfd * | |
2600 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2601 | { | |
73869dc2 DE |
2602 | if (section->is_virtual) |
2603 | { | |
2604 | section = get_containing_section (section); | |
2605 | gdb_assert (!section->is_virtual); | |
2606 | } | |
049412e3 | 2607 | return section->s.section->owner; |
a32a8923 DE |
2608 | } |
2609 | ||
2610 | /* Return the bfd section of SECTION. | |
2611 | Returns NULL if the section is not present. */ | |
2612 | ||
2613 | static asection * | |
2614 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2615 | { | |
73869dc2 DE |
2616 | if (section->is_virtual) |
2617 | { | |
2618 | section = get_containing_section (section); | |
2619 | gdb_assert (!section->is_virtual); | |
2620 | } | |
049412e3 | 2621 | return section->s.section; |
a32a8923 DE |
2622 | } |
2623 | ||
2624 | /* Return the name of SECTION. */ | |
2625 | ||
2626 | static const char * | |
2627 | get_section_name (const struct dwarf2_section_info *section) | |
2628 | { | |
2629 | asection *sectp = get_section_bfd_section (section); | |
2630 | ||
2631 | gdb_assert (sectp != NULL); | |
2632 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2633 | } | |
2634 | ||
2635 | /* Return the name of the file SECTION is in. */ | |
2636 | ||
2637 | static const char * | |
2638 | get_section_file_name (const struct dwarf2_section_info *section) | |
2639 | { | |
2640 | bfd *abfd = get_section_bfd_owner (section); | |
2641 | ||
2642 | return bfd_get_filename (abfd); | |
2643 | } | |
2644 | ||
2645 | /* Return the id of SECTION. | |
2646 | Returns 0 if SECTION doesn't exist. */ | |
2647 | ||
2648 | static int | |
2649 | get_section_id (const struct dwarf2_section_info *section) | |
2650 | { | |
2651 | asection *sectp = get_section_bfd_section (section); | |
2652 | ||
2653 | if (sectp == NULL) | |
2654 | return 0; | |
2655 | return sectp->id; | |
2656 | } | |
2657 | ||
2658 | /* Return the flags of SECTION. | |
73869dc2 | 2659 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2660 | |
2661 | static int | |
2662 | get_section_flags (const struct dwarf2_section_info *section) | |
2663 | { | |
2664 | asection *sectp = get_section_bfd_section (section); | |
2665 | ||
2666 | gdb_assert (sectp != NULL); | |
2667 | return bfd_get_section_flags (sectp->owner, sectp); | |
2668 | } | |
2669 | ||
251d32d9 TG |
2670 | /* When loading sections, we look either for uncompressed section or for |
2671 | compressed section names. */ | |
233a11ab CS |
2672 | |
2673 | static int | |
251d32d9 TG |
2674 | section_is_p (const char *section_name, |
2675 | const struct dwarf2_section_names *names) | |
233a11ab | 2676 | { |
251d32d9 TG |
2677 | if (names->normal != NULL |
2678 | && strcmp (section_name, names->normal) == 0) | |
2679 | return 1; | |
2680 | if (names->compressed != NULL | |
2681 | && strcmp (section_name, names->compressed) == 0) | |
2682 | return 1; | |
2683 | return 0; | |
233a11ab CS |
2684 | } |
2685 | ||
330cdd98 | 2686 | /* See declaration. */ |
c906108c | 2687 | |
330cdd98 PA |
2688 | void |
2689 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
2690 | const dwarf2_debug_sections &names) | |
c906108c | 2691 | { |
dc7650b8 | 2692 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 | 2693 | |
dc7650b8 JK |
2694 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2695 | { | |
2696 | } | |
330cdd98 | 2697 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 2698 | { |
330cdd98 PA |
2699 | this->info.s.section = sectp; |
2700 | this->info.size = bfd_get_section_size (sectp); | |
c906108c | 2701 | } |
330cdd98 | 2702 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 2703 | { |
330cdd98 PA |
2704 | this->abbrev.s.section = sectp; |
2705 | this->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 2706 | } |
330cdd98 | 2707 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 2708 | { |
330cdd98 PA |
2709 | this->line.s.section = sectp; |
2710 | this->line.size = bfd_get_section_size (sectp); | |
c906108c | 2711 | } |
330cdd98 | 2712 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 2713 | { |
330cdd98 PA |
2714 | this->loc.s.section = sectp; |
2715 | this->loc.size = bfd_get_section_size (sectp); | |
c906108c | 2716 | } |
330cdd98 | 2717 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 2718 | { |
330cdd98 PA |
2719 | this->loclists.s.section = sectp; |
2720 | this->loclists.size = bfd_get_section_size (sectp); | |
43988095 | 2721 | } |
330cdd98 | 2722 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2723 | { |
330cdd98 PA |
2724 | this->macinfo.s.section = sectp; |
2725 | this->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 2726 | } |
330cdd98 | 2727 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2728 | { |
330cdd98 PA |
2729 | this->macro.s.section = sectp; |
2730 | this->macro.size = bfd_get_section_size (sectp); | |
cf2c3c16 | 2731 | } |
330cdd98 | 2732 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2733 | { |
330cdd98 PA |
2734 | this->str.s.section = sectp; |
2735 | this->str.size = bfd_get_section_size (sectp); | |
c906108c | 2736 | } |
330cdd98 | 2737 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2738 | { |
330cdd98 PA |
2739 | this->line_str.s.section = sectp; |
2740 | this->line_str.size = bfd_get_section_size (sectp); | |
43988095 | 2741 | } |
330cdd98 | 2742 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2743 | { |
330cdd98 PA |
2744 | this->addr.s.section = sectp; |
2745 | this->addr.size = bfd_get_section_size (sectp); | |
3019eac3 | 2746 | } |
330cdd98 | 2747 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2748 | { |
330cdd98 PA |
2749 | this->frame.s.section = sectp; |
2750 | this->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2751 | } |
330cdd98 | 2752 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2753 | { |
330cdd98 PA |
2754 | this->eh_frame.s.section = sectp; |
2755 | this->eh_frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2756 | } |
330cdd98 | 2757 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2758 | { |
330cdd98 PA |
2759 | this->ranges.s.section = sectp; |
2760 | this->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 2761 | } |
330cdd98 | 2762 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2763 | { |
330cdd98 PA |
2764 | this->rnglists.s.section = sectp; |
2765 | this->rnglists.size = bfd_get_section_size (sectp); | |
43988095 | 2766 | } |
330cdd98 | 2767 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2768 | { |
8b70b953 TT |
2769 | struct dwarf2_section_info type_section; |
2770 | ||
2771 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2772 | type_section.s.section = sectp; |
8b70b953 TT |
2773 | type_section.size = bfd_get_section_size (sectp); |
2774 | ||
330cdd98 | 2775 | VEC_safe_push (dwarf2_section_info_def, this->types, |
8b70b953 | 2776 | &type_section); |
348e048f | 2777 | } |
330cdd98 | 2778 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2779 | { |
330cdd98 PA |
2780 | this->gdb_index.s.section = sectp; |
2781 | this->gdb_index.size = bfd_get_section_size (sectp); | |
9291a0cd | 2782 | } |
927aa2e7 JK |
2783 | else if (section_is_p (sectp->name, &names.debug_names)) |
2784 | { | |
2785 | this->debug_names.s.section = sectp; | |
2786 | this->debug_names.size = bfd_get_section_size (sectp); | |
2787 | } | |
2788 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2789 | { | |
2790 | this->debug_aranges.s.section = sectp; | |
2791 | this->debug_aranges.size = bfd_get_section_size (sectp); | |
2792 | } | |
dce234bc | 2793 | |
b4e1fd61 | 2794 | if ((bfd_get_section_flags (abfd, sectp) & (SEC_LOAD | SEC_ALLOC)) |
72dca2f5 | 2795 | && bfd_section_vma (abfd, sectp) == 0) |
330cdd98 | 2796 | this->has_section_at_zero = true; |
c906108c SS |
2797 | } |
2798 | ||
fceca515 DE |
2799 | /* A helper function that decides whether a section is empty, |
2800 | or not present. */ | |
9e0ac564 TT |
2801 | |
2802 | static int | |
19ac8c2e | 2803 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2804 | { |
73869dc2 DE |
2805 | if (section->is_virtual) |
2806 | return section->size == 0; | |
049412e3 | 2807 | return section->s.section == NULL || section->size == 0; |
9e0ac564 TT |
2808 | } |
2809 | ||
3019eac3 DE |
2810 | /* Read the contents of the section INFO. |
2811 | OBJFILE is the main object file, but not necessarily the file where | |
a32a8923 DE |
2812 | the section comes from. E.g., for DWO files the bfd of INFO is the bfd |
2813 | of the DWO file. | |
dce234bc | 2814 | If the section is compressed, uncompress it before returning. */ |
c906108c | 2815 | |
dce234bc PP |
2816 | static void |
2817 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 2818 | { |
a32a8923 | 2819 | asection *sectp; |
3019eac3 | 2820 | bfd *abfd; |
dce234bc | 2821 | gdb_byte *buf, *retbuf; |
c906108c | 2822 | |
be391dca TT |
2823 | if (info->readin) |
2824 | return; | |
dce234bc | 2825 | info->buffer = NULL; |
be391dca | 2826 | info->readin = 1; |
188dd5d6 | 2827 | |
9e0ac564 | 2828 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2829 | return; |
c906108c | 2830 | |
a32a8923 | 2831 | sectp = get_section_bfd_section (info); |
3019eac3 | 2832 | |
73869dc2 DE |
2833 | /* If this is a virtual section we need to read in the real one first. */ |
2834 | if (info->is_virtual) | |
2835 | { | |
2836 | struct dwarf2_section_info *containing_section = | |
2837 | get_containing_section (info); | |
2838 | ||
2839 | gdb_assert (sectp != NULL); | |
2840 | if ((sectp->flags & SEC_RELOC) != 0) | |
2841 | { | |
2842 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2843 | " supported in section %s [in module %s]"), | |
2844 | get_section_name (info), get_section_file_name (info)); | |
2845 | } | |
2846 | dwarf2_read_section (objfile, containing_section); | |
2847 | /* Other code should have already caught virtual sections that don't | |
2848 | fit. */ | |
2849 | gdb_assert (info->virtual_offset + info->size | |
2850 | <= containing_section->size); | |
2851 | /* If the real section is empty or there was a problem reading the | |
2852 | section we shouldn't get here. */ | |
2853 | gdb_assert (containing_section->buffer != NULL); | |
2854 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2855 | return; | |
2856 | } | |
2857 | ||
4bf44c1c TT |
2858 | /* If the section has relocations, we must read it ourselves. |
2859 | Otherwise we attach it to the BFD. */ | |
2860 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2861 | { |
d521ce57 | 2862 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2863 | return; |
dce234bc | 2864 | } |
dce234bc | 2865 | |
224c3ddb | 2866 | buf = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, info->size); |
4bf44c1c | 2867 | info->buffer = buf; |
dce234bc PP |
2868 | |
2869 | /* When debugging .o files, we may need to apply relocations; see | |
2870 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2871 | We never compress sections in .o files, so we only need to | |
2872 | try this when the section is not compressed. */ | |
ac8035ab | 2873 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2874 | if (retbuf != NULL) |
2875 | { | |
2876 | info->buffer = retbuf; | |
2877 | return; | |
2878 | } | |
2879 | ||
a32a8923 DE |
2880 | abfd = get_section_bfd_owner (info); |
2881 | gdb_assert (abfd != NULL); | |
2882 | ||
dce234bc PP |
2883 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2884 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2885 | { |
2886 | error (_("Dwarf Error: Can't read DWARF data" | |
2887 | " in section %s [in module %s]"), | |
2888 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2889 | } | |
dce234bc PP |
2890 | } |
2891 | ||
9e0ac564 TT |
2892 | /* A helper function that returns the size of a section in a safe way. |
2893 | If you are positive that the section has been read before using the | |
2894 | size, then it is safe to refer to the dwarf2_section_info object's | |
2895 | "size" field directly. In other cases, you must call this | |
2896 | function, because for compressed sections the size field is not set | |
2897 | correctly until the section has been read. */ | |
2898 | ||
2899 | static bfd_size_type | |
2900 | dwarf2_section_size (struct objfile *objfile, | |
2901 | struct dwarf2_section_info *info) | |
2902 | { | |
2903 | if (!info->readin) | |
2904 | dwarf2_read_section (objfile, info); | |
2905 | return info->size; | |
2906 | } | |
2907 | ||
dce234bc | 2908 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2909 | SECTION_NAME. */ |
af34e669 | 2910 | |
dce234bc | 2911 | void |
3017a003 TG |
2912 | dwarf2_get_section_info (struct objfile *objfile, |
2913 | enum dwarf2_section_enum sect, | |
d521ce57 | 2914 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2915 | bfd_size_type *sizep) |
2916 | { | |
2917 | struct dwarf2_per_objfile *data | |
9a3c8263 SM |
2918 | = (struct dwarf2_per_objfile *) objfile_data (objfile, |
2919 | dwarf2_objfile_data_key); | |
dce234bc | 2920 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2921 | |
2922 | /* We may see an objfile without any DWARF, in which case we just | |
2923 | return nothing. */ | |
2924 | if (data == NULL) | |
2925 | { | |
2926 | *sectp = NULL; | |
2927 | *bufp = NULL; | |
2928 | *sizep = 0; | |
2929 | return; | |
2930 | } | |
3017a003 TG |
2931 | switch (sect) |
2932 | { | |
2933 | case DWARF2_DEBUG_FRAME: | |
2934 | info = &data->frame; | |
2935 | break; | |
2936 | case DWARF2_EH_FRAME: | |
2937 | info = &data->eh_frame; | |
2938 | break; | |
2939 | default: | |
2940 | gdb_assert_not_reached ("unexpected section"); | |
2941 | } | |
dce234bc | 2942 | |
9e0ac564 | 2943 | dwarf2_read_section (objfile, info); |
dce234bc | 2944 | |
a32a8923 | 2945 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2946 | *bufp = info->buffer; |
2947 | *sizep = info->size; | |
2948 | } | |
2949 | ||
36586728 TT |
2950 | /* A helper function to find the sections for a .dwz file. */ |
2951 | ||
2952 | static void | |
2953 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2954 | { | |
9a3c8263 | 2955 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2956 | |
2957 | /* Note that we only support the standard ELF names, because .dwz | |
2958 | is ELF-only (at the time of writing). */ | |
2959 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2960 | { | |
049412e3 | 2961 | dwz_file->abbrev.s.section = sectp; |
36586728 TT |
2962 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2963 | } | |
2964 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2965 | { | |
049412e3 | 2966 | dwz_file->info.s.section = sectp; |
36586728 TT |
2967 | dwz_file->info.size = bfd_get_section_size (sectp); |
2968 | } | |
2969 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2970 | { | |
049412e3 | 2971 | dwz_file->str.s.section = sectp; |
36586728 TT |
2972 | dwz_file->str.size = bfd_get_section_size (sectp); |
2973 | } | |
2974 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2975 | { | |
049412e3 | 2976 | dwz_file->line.s.section = sectp; |
36586728 TT |
2977 | dwz_file->line.size = bfd_get_section_size (sectp); |
2978 | } | |
2979 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2980 | { | |
049412e3 | 2981 | dwz_file->macro.s.section = sectp; |
36586728 TT |
2982 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2983 | } | |
2ec9a5e0 TT |
2984 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2985 | { | |
049412e3 | 2986 | dwz_file->gdb_index.s.section = sectp; |
2ec9a5e0 TT |
2987 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2988 | } | |
927aa2e7 JK |
2989 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2990 | { | |
2991 | dwz_file->debug_names.s.section = sectp; | |
2992 | dwz_file->debug_names.size = bfd_get_section_size (sectp); | |
2993 | } | |
36586728 TT |
2994 | } |
2995 | ||
4db1a1dc TT |
2996 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2997 | there is no .gnu_debugaltlink section in the file. Error if there | |
2998 | is such a section but the file cannot be found. */ | |
36586728 TT |
2999 | |
3000 | static struct dwz_file * | |
ed2dc618 | 3001 | dwarf2_get_dwz_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 3002 | { |
36586728 TT |
3003 | const char *filename; |
3004 | struct dwz_file *result; | |
acd13123 | 3005 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
3006 | size_t buildid_len; |
3007 | bfd_byte *buildid; | |
36586728 TT |
3008 | |
3009 | if (dwarf2_per_objfile->dwz_file != NULL) | |
3010 | return dwarf2_per_objfile->dwz_file; | |
3011 | ||
4db1a1dc | 3012 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
3013 | gdb::unique_xmalloc_ptr<char> data |
3014 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
3015 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
3016 | if (data == NULL) |
3017 | { | |
3018 | if (bfd_get_error () == bfd_error_no_error) | |
3019 | return NULL; | |
3020 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
3021 | bfd_errmsg (bfd_get_error ())); | |
3022 | } | |
791afaa2 TT |
3023 | |
3024 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 3025 | |
acd13123 TT |
3026 | buildid_len = (size_t) buildid_len_arg; |
3027 | ||
791afaa2 | 3028 | filename = data.get (); |
d721ba37 PA |
3029 | |
3030 | std::string abs_storage; | |
36586728 TT |
3031 | if (!IS_ABSOLUTE_PATH (filename)) |
3032 | { | |
14278e1f TT |
3033 | gdb::unique_xmalloc_ptr<char> abs |
3034 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 3035 | |
14278e1f | 3036 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 3037 | filename = abs_storage.c_str (); |
36586728 TT |
3038 | } |
3039 | ||
dc294be5 TT |
3040 | /* First try the file name given in the section. If that doesn't |
3041 | work, try to use the build-id instead. */ | |
192b62ce | 3042 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 3043 | if (dwz_bfd != NULL) |
36586728 | 3044 | { |
192b62ce TT |
3045 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
3046 | dwz_bfd.release (); | |
36586728 TT |
3047 | } |
3048 | ||
dc294be5 TT |
3049 | if (dwz_bfd == NULL) |
3050 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
3051 | ||
3052 | if (dwz_bfd == NULL) | |
3053 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
3054 | objfile_name (dwarf2_per_objfile->objfile)); | |
3055 | ||
36586728 TT |
3056 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, |
3057 | struct dwz_file); | |
192b62ce | 3058 | result->dwz_bfd = dwz_bfd.release (); |
36586728 | 3059 | |
192b62ce | 3060 | bfd_map_over_sections (result->dwz_bfd, locate_dwz_sections, result); |
36586728 | 3061 | |
192b62ce | 3062 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, result->dwz_bfd); |
8d2cc612 | 3063 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
3064 | return result; |
3065 | } | |
9291a0cd | 3066 | \f |
7b9f3c50 DE |
3067 | /* DWARF quick_symbols_functions support. */ |
3068 | ||
3069 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
3070 | unique line tables, so we maintain a separate table of all .debug_line | |
3071 | derived entries to support the sharing. | |
3072 | All the quick functions need is the list of file names. We discard the | |
3073 | line_header when we're done and don't need to record it here. */ | |
3074 | struct quick_file_names | |
3075 | { | |
094b34ac DE |
3076 | /* The data used to construct the hash key. */ |
3077 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
3078 | |
3079 | /* The number of entries in file_names, real_names. */ | |
3080 | unsigned int num_file_names; | |
3081 | ||
3082 | /* The file names from the line table, after being run through | |
3083 | file_full_name. */ | |
3084 | const char **file_names; | |
3085 | ||
3086 | /* The file names from the line table after being run through | |
3087 | gdb_realpath. These are computed lazily. */ | |
3088 | const char **real_names; | |
3089 | }; | |
3090 | ||
3091 | /* When using the index (and thus not using psymtabs), each CU has an | |
3092 | object of this type. This is used to hold information needed by | |
3093 | the various "quick" methods. */ | |
3094 | struct dwarf2_per_cu_quick_data | |
3095 | { | |
3096 | /* The file table. This can be NULL if there was no file table | |
3097 | or it's currently not read in. | |
3098 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
3099 | struct quick_file_names *file_names; | |
3100 | ||
3101 | /* The corresponding symbol table. This is NULL if symbols for this | |
3102 | CU have not yet been read. */ | |
43f3e411 | 3103 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
3104 | |
3105 | /* A temporary mark bit used when iterating over all CUs in | |
3106 | expand_symtabs_matching. */ | |
3107 | unsigned int mark : 1; | |
3108 | ||
3109 | /* True if we've tried to read the file table and found there isn't one. | |
3110 | There will be no point in trying to read it again next time. */ | |
3111 | unsigned int no_file_data : 1; | |
3112 | }; | |
3113 | ||
094b34ac DE |
3114 | /* Utility hash function for a stmt_list_hash. */ |
3115 | ||
3116 | static hashval_t | |
3117 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
3118 | { | |
3119 | hashval_t v = 0; | |
3120 | ||
3121 | if (stmt_list_hash->dwo_unit != NULL) | |
3122 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 3123 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
3124 | return v; |
3125 | } | |
3126 | ||
3127 | /* Utility equality function for a stmt_list_hash. */ | |
3128 | ||
3129 | static int | |
3130 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
3131 | const struct stmt_list_hash *rhs) | |
3132 | { | |
3133 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
3134 | return 0; | |
3135 | if (lhs->dwo_unit != NULL | |
3136 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
3137 | return 0; | |
3138 | ||
9c541725 | 3139 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
3140 | } |
3141 | ||
7b9f3c50 DE |
3142 | /* Hash function for a quick_file_names. */ |
3143 | ||
3144 | static hashval_t | |
3145 | hash_file_name_entry (const void *e) | |
3146 | { | |
9a3c8263 SM |
3147 | const struct quick_file_names *file_data |
3148 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 3149 | |
094b34ac | 3150 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
3151 | } |
3152 | ||
3153 | /* Equality function for a quick_file_names. */ | |
3154 | ||
3155 | static int | |
3156 | eq_file_name_entry (const void *a, const void *b) | |
3157 | { | |
9a3c8263 SM |
3158 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
3159 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 3160 | |
094b34ac | 3161 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
3162 | } |
3163 | ||
3164 | /* Delete function for a quick_file_names. */ | |
3165 | ||
3166 | static void | |
3167 | delete_file_name_entry (void *e) | |
3168 | { | |
9a3c8263 | 3169 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
3170 | int i; |
3171 | ||
3172 | for (i = 0; i < file_data->num_file_names; ++i) | |
3173 | { | |
3174 | xfree ((void*) file_data->file_names[i]); | |
3175 | if (file_data->real_names) | |
3176 | xfree ((void*) file_data->real_names[i]); | |
3177 | } | |
3178 | ||
3179 | /* The space for the struct itself lives on objfile_obstack, | |
3180 | so we don't free it here. */ | |
3181 | } | |
3182 | ||
3183 | /* Create a quick_file_names hash table. */ | |
3184 | ||
3185 | static htab_t | |
3186 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
3187 | { | |
3188 | return htab_create_alloc (nr_initial_entries, | |
3189 | hash_file_name_entry, eq_file_name_entry, | |
3190 | delete_file_name_entry, xcalloc, xfree); | |
3191 | } | |
9291a0cd | 3192 | |
918dd910 JK |
3193 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
3194 | have to be created afterwards. You should call age_cached_comp_units after | |
3195 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
3196 | ||
3197 | static void | |
3198 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
3199 | { | |
3019eac3 | 3200 | if (per_cu->is_debug_types) |
e5fe5e75 | 3201 | load_full_type_unit (per_cu); |
918dd910 | 3202 | else |
95554aad | 3203 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 3204 | |
cc12ce38 DE |
3205 | if (per_cu->cu == NULL) |
3206 | return; /* Dummy CU. */ | |
2dc860c0 DE |
3207 | |
3208 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
3209 | } |
3210 | ||
a0f42c21 | 3211 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 3212 | |
9291a0cd | 3213 | static void |
a0f42c21 | 3214 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 3215 | { |
ed2dc618 | 3216 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9291a0cd | 3217 | |
f4dc4d17 DE |
3218 | /* Skip type_unit_groups, reading the type units they contain |
3219 | is handled elsewhere. */ | |
3220 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
3221 | return; | |
3222 | ||
b303c6f6 AB |
3223 | /* The destructor of dwarf2_queue_guard frees any entries left on |
3224 | the queue. After this point we're guaranteed to leave this function | |
3225 | with the dwarf queue empty. */ | |
3226 | dwarf2_queue_guard q_guard; | |
9291a0cd | 3227 | |
95554aad | 3228 | if (dwarf2_per_objfile->using_index |
43f3e411 | 3229 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
3230 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
3231 | { | |
3232 | queue_comp_unit (per_cu, language_minimal); | |
3233 | load_cu (per_cu); | |
89e63ee4 DE |
3234 | |
3235 | /* If we just loaded a CU from a DWO, and we're working with an index | |
3236 | that may badly handle TUs, load all the TUs in that DWO as well. | |
3237 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
3238 | if (!per_cu->is_debug_types | |
cc12ce38 | 3239 | && per_cu->cu != NULL |
89e63ee4 DE |
3240 | && per_cu->cu->dwo_unit != NULL |
3241 | && dwarf2_per_objfile->index_table != NULL | |
3242 | && dwarf2_per_objfile->index_table->version <= 7 | |
3243 | /* DWP files aren't supported yet. */ | |
ed2dc618 | 3244 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 3245 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 3246 | } |
9291a0cd | 3247 | |
ed2dc618 | 3248 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
3249 | |
3250 | /* Age the cache, releasing compilation units that have not | |
3251 | been used recently. */ | |
ed2dc618 | 3252 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
3253 | } |
3254 | ||
3255 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
3256 | the objfile from which this CU came. Returns the resulting symbol | |
3257 | table. */ | |
2fdf6df6 | 3258 | |
43f3e411 | 3259 | static struct compunit_symtab * |
a0f42c21 | 3260 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 3261 | { |
ed2dc618 SM |
3262 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3263 | ||
95554aad | 3264 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 3265 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd | 3266 | { |
ed2dc618 SM |
3267 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, |
3268 | dwarf2_per_objfile); | |
c83dd867 | 3269 | scoped_restore decrementer = increment_reading_symtab (); |
a0f42c21 | 3270 | dw2_do_instantiate_symtab (per_cu); |
ed2dc618 | 3271 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd TT |
3272 | do_cleanups (back_to); |
3273 | } | |
f194fefb | 3274 | |
43f3e411 | 3275 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
3276 | } |
3277 | ||
8832e7e3 | 3278 | /* Return the CU/TU given its index. |
f4dc4d17 DE |
3279 | |
3280 | This is intended for loops like: | |
3281 | ||
3282 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
3283 | + dwarf2_per_objfile->n_type_units); ++i) | |
3284 | { | |
8832e7e3 | 3285 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (i); |
f4dc4d17 DE |
3286 | |
3287 | ...; | |
3288 | } | |
3289 | */ | |
2fdf6df6 | 3290 | |
1fd400ff | 3291 | static struct dwarf2_per_cu_data * |
ed2dc618 SM |
3292 | dw2_get_cutu (struct dwarf2_per_objfile *dwarf2_per_objfile, |
3293 | int index) | |
1fd400ff TT |
3294 | { |
3295 | if (index >= dwarf2_per_objfile->n_comp_units) | |
3296 | { | |
f4dc4d17 | 3297 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
3298 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
3299 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
3300 | } |
3301 | ||
3302 | return dwarf2_per_objfile->all_comp_units[index]; | |
3303 | } | |
3304 | ||
8832e7e3 DE |
3305 | /* Return the CU given its index. |
3306 | This differs from dw2_get_cutu in that it's for when you know INDEX | |
3307 | refers to a CU. */ | |
f4dc4d17 DE |
3308 | |
3309 | static struct dwarf2_per_cu_data * | |
ed2dc618 | 3310 | dw2_get_cu (struct dwarf2_per_objfile *dwarf2_per_objfile, int index) |
f4dc4d17 | 3311 | { |
8832e7e3 | 3312 | gdb_assert (index >= 0 && index < dwarf2_per_objfile->n_comp_units); |
f4dc4d17 | 3313 | |
1fd400ff TT |
3314 | return dwarf2_per_objfile->all_comp_units[index]; |
3315 | } | |
3316 | ||
4b514bc8 JK |
3317 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
3318 | objfile_obstack, and constructed with the specified field | |
3319 | values. */ | |
3320 | ||
3321 | static dwarf2_per_cu_data * | |
ed2dc618 | 3322 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
3323 | struct dwarf2_section_info *section, |
3324 | int is_dwz, | |
3325 | sect_offset sect_off, ULONGEST length) | |
3326 | { | |
ed2dc618 | 3327 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4b514bc8 JK |
3328 | dwarf2_per_cu_data *the_cu |
3329 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3330 | struct dwarf2_per_cu_data); | |
3331 | the_cu->sect_off = sect_off; | |
3332 | the_cu->length = length; | |
e3b94546 | 3333 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 JK |
3334 | the_cu->section = section; |
3335 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3336 | struct dwarf2_per_cu_quick_data); | |
3337 | the_cu->is_dwz = is_dwz; | |
3338 | return the_cu; | |
3339 | } | |
3340 | ||
2ec9a5e0 TT |
3341 | /* A helper for create_cus_from_index that handles a given list of |
3342 | CUs. */ | |
2fdf6df6 | 3343 | |
74a0d9f6 | 3344 | static void |
2ec9a5e0 TT |
3345 | create_cus_from_index_list (struct objfile *objfile, |
3346 | const gdb_byte *cu_list, offset_type n_elements, | |
3347 | struct dwarf2_section_info *section, | |
3348 | int is_dwz, | |
3349 | int base_offset) | |
9291a0cd TT |
3350 | { |
3351 | offset_type i; | |
ed2dc618 SM |
3352 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3353 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 3354 | |
2ec9a5e0 | 3355 | for (i = 0; i < n_elements; i += 2) |
9291a0cd | 3356 | { |
74a0d9f6 | 3357 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3358 | |
3359 | sect_offset sect_off | |
3360 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
3361 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
3362 | cu_list += 2 * 8; |
3363 | ||
4b514bc8 | 3364 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] |
ed2dc618 SM |
3365 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
3366 | sect_off, length); | |
9291a0cd | 3367 | } |
9291a0cd TT |
3368 | } |
3369 | ||
2ec9a5e0 | 3370 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 3371 | the CU objects for this objfile. */ |
2ec9a5e0 | 3372 | |
74a0d9f6 | 3373 | static void |
2ec9a5e0 TT |
3374 | create_cus_from_index (struct objfile *objfile, |
3375 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
3376 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
3377 | { | |
3378 | struct dwz_file *dwz; | |
ed2dc618 SM |
3379 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3380 | = get_dwarf2_per_objfile (objfile); | |
2ec9a5e0 TT |
3381 | |
3382 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
8d749320 SM |
3383 | dwarf2_per_objfile->all_comp_units = |
3384 | XOBNEWVEC (&objfile->objfile_obstack, struct dwarf2_per_cu_data *, | |
3385 | dwarf2_per_objfile->n_comp_units); | |
2ec9a5e0 | 3386 | |
74a0d9f6 JK |
3387 | create_cus_from_index_list (objfile, cu_list, cu_list_elements, |
3388 | &dwarf2_per_objfile->info, 0, 0); | |
2ec9a5e0 TT |
3389 | |
3390 | if (dwz_elements == 0) | |
74a0d9f6 | 3391 | return; |
2ec9a5e0 | 3392 | |
ed2dc618 | 3393 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
74a0d9f6 JK |
3394 | create_cus_from_index_list (objfile, dwz_list, dwz_elements, &dwz->info, 1, |
3395 | cu_list_elements / 2); | |
2ec9a5e0 TT |
3396 | } |
3397 | ||
1fd400ff | 3398 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 3399 | |
74a0d9f6 | 3400 | static void |
673bfd45 | 3401 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 3402 | struct dwarf2_section_info *section, |
673bfd45 DE |
3403 | const gdb_byte *bytes, |
3404 | offset_type elements) | |
1fd400ff TT |
3405 | { |
3406 | offset_type i; | |
673bfd45 | 3407 | htab_t sig_types_hash; |
ed2dc618 SM |
3408 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3409 | = get_dwarf2_per_objfile (objfile); | |
1fd400ff | 3410 | |
6aa5f3a6 DE |
3411 | dwarf2_per_objfile->n_type_units |
3412 | = dwarf2_per_objfile->n_allocated_type_units | |
3413 | = elements / 3; | |
8d749320 SM |
3414 | dwarf2_per_objfile->all_type_units = |
3415 | XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
1fd400ff | 3416 | |
673bfd45 | 3417 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
3418 | |
3419 | for (i = 0; i < elements; i += 3) | |
3420 | { | |
52dc124a | 3421 | struct signatured_type *sig_type; |
9c541725 | 3422 | ULONGEST signature; |
1fd400ff | 3423 | void **slot; |
9c541725 | 3424 | cu_offset type_offset_in_tu; |
1fd400ff | 3425 | |
74a0d9f6 | 3426 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3427 | sect_offset sect_off |
3428 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
3429 | type_offset_in_tu | |
3430 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
3431 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
3432 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
3433 | bytes += 3 * 8; | |
3434 | ||
52dc124a | 3435 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 3436 | struct signatured_type); |
52dc124a | 3437 | sig_type->signature = signature; |
9c541725 | 3438 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 3439 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 3440 | sig_type->per_cu.section = section; |
9c541725 | 3441 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 3442 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 3443 | sig_type->per_cu.v.quick |
1fd400ff TT |
3444 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3445 | struct dwarf2_per_cu_quick_data); | |
3446 | ||
52dc124a DE |
3447 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
3448 | *slot = sig_type; | |
1fd400ff | 3449 | |
b4dd5633 | 3450 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
3451 | } |
3452 | ||
673bfd45 | 3453 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
3454 | } |
3455 | ||
927aa2e7 JK |
3456 | /* Create the signatured type hash table from .debug_names. */ |
3457 | ||
3458 | static void | |
3459 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 3460 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3461 | const mapped_debug_names &map, |
3462 | struct dwarf2_section_info *section, | |
3463 | struct dwarf2_section_info *abbrev_section) | |
3464 | { | |
ed2dc618 SM |
3465 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3466 | ||
927aa2e7 JK |
3467 | dwarf2_read_section (objfile, section); |
3468 | dwarf2_read_section (objfile, abbrev_section); | |
3469 | ||
3470 | dwarf2_per_objfile->n_type_units | |
3471 | = dwarf2_per_objfile->n_allocated_type_units | |
3472 | = map.tu_count; | |
3473 | dwarf2_per_objfile->all_type_units | |
3474 | = XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
3475 | ||
3476 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); | |
3477 | ||
3478 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
3479 | { | |
3480 | struct signatured_type *sig_type; | |
3481 | ULONGEST signature; | |
3482 | void **slot; | |
3483 | cu_offset type_offset_in_tu; | |
3484 | ||
3485 | sect_offset sect_off | |
3486 | = (sect_offset) (extract_unsigned_integer | |
3487 | (map.tu_table_reordered + i * map.offset_size, | |
3488 | map.offset_size, | |
3489 | map.dwarf5_byte_order)); | |
3490 | ||
3491 | comp_unit_head cu_header; | |
ed2dc618 SM |
3492 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
3493 | abbrev_section, | |
927aa2e7 JK |
3494 | section->buffer + to_underlying (sect_off), |
3495 | rcuh_kind::TYPE); | |
3496 | ||
3497 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3498 | struct signatured_type); | |
3499 | sig_type->signature = cu_header.signature; | |
3500 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
3501 | sig_type->per_cu.is_debug_types = 1; | |
3502 | sig_type->per_cu.section = section; | |
3503 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 3504 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 JK |
3505 | sig_type->per_cu.v.quick |
3506 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3507 | struct dwarf2_per_cu_quick_data); | |
3508 | ||
3509 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); | |
3510 | *slot = sig_type; | |
3511 | ||
3512 | dwarf2_per_objfile->all_type_units[i] = sig_type; | |
3513 | } | |
3514 | ||
3515 | dwarf2_per_objfile->signatured_types = sig_types_hash; | |
3516 | } | |
3517 | ||
9291a0cd TT |
3518 | /* Read the address map data from the mapped index, and use it to |
3519 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 3520 | |
9291a0cd | 3521 | static void |
ed2dc618 SM |
3522 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
3523 | struct mapped_index *index) | |
9291a0cd | 3524 | { |
ed2dc618 | 3525 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 3526 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd | 3527 | const gdb_byte *iter, *end; |
9291a0cd | 3528 | struct addrmap *mutable_map; |
9291a0cd TT |
3529 | CORE_ADDR baseaddr; |
3530 | ||
8268c778 PA |
3531 | auto_obstack temp_obstack; |
3532 | ||
9291a0cd TT |
3533 | mutable_map = addrmap_create_mutable (&temp_obstack); |
3534 | ||
f00a2de2 PA |
3535 | iter = index->address_table.data (); |
3536 | end = iter + index->address_table.size (); | |
9291a0cd TT |
3537 | |
3538 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3539 | ||
3540 | while (iter < end) | |
3541 | { | |
3542 | ULONGEST hi, lo, cu_index; | |
3543 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3544 | iter += 8; | |
3545 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3546 | iter += 8; | |
3547 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
3548 | iter += 4; | |
f652bce2 | 3549 | |
24a55014 | 3550 | if (lo > hi) |
f652bce2 | 3551 | { |
24a55014 DE |
3552 | complaint (&symfile_complaints, |
3553 | _(".gdb_index address table has invalid range (%s - %s)"), | |
c0cd8254 | 3554 | hex_string (lo), hex_string (hi)); |
24a55014 | 3555 | continue; |
f652bce2 | 3556 | } |
24a55014 DE |
3557 | |
3558 | if (cu_index >= dwarf2_per_objfile->n_comp_units) | |
f652bce2 DE |
3559 | { |
3560 | complaint (&symfile_complaints, | |
3561 | _(".gdb_index address table has invalid CU number %u"), | |
3562 | (unsigned) cu_index); | |
24a55014 | 3563 | continue; |
f652bce2 | 3564 | } |
24a55014 | 3565 | |
3e29f34a MR |
3566 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr); |
3567 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr); | |
ed2dc618 SM |
3568 | addrmap_set_empty (mutable_map, lo, hi - 1, |
3569 | dw2_get_cutu (dwarf2_per_objfile, cu_index)); | |
9291a0cd TT |
3570 | } |
3571 | ||
3572 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3573 | &objfile->objfile_obstack); | |
9291a0cd TT |
3574 | } |
3575 | ||
927aa2e7 JK |
3576 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
3577 | populate the objfile's psymtabs_addrmap. */ | |
3578 | ||
3579 | static void | |
ed2dc618 | 3580 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3581 | struct dwarf2_section_info *section) |
3582 | { | |
ed2dc618 | 3583 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
3584 | bfd *abfd = objfile->obfd; |
3585 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3586 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
3587 | SECT_OFF_TEXT (objfile)); | |
3588 | ||
3589 | auto_obstack temp_obstack; | |
3590 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
3591 | ||
3592 | std::unordered_map<sect_offset, | |
3593 | dwarf2_per_cu_data *, | |
3594 | gdb::hash_enum<sect_offset>> | |
3595 | debug_info_offset_to_per_cu; | |
3596 | for (int cui = 0; cui < dwarf2_per_objfile->n_comp_units; ++cui) | |
3597 | { | |
ed2dc618 | 3598 | dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, cui); |
927aa2e7 JK |
3599 | const auto insertpair |
3600 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
3601 | if (!insertpair.second) | |
3602 | { | |
3603 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
3604 | "debug_info_offset %s, ignoring .debug_aranges."), |
3605 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
3606 | return; |
3607 | } | |
3608 | } | |
3609 | ||
3610 | dwarf2_read_section (objfile, section); | |
3611 | ||
3612 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
3613 | ||
3614 | const gdb_byte *addr = section->buffer; | |
3615 | ||
3616 | while (addr < section->buffer + section->size) | |
3617 | { | |
3618 | const gdb_byte *const entry_addr = addr; | |
3619 | unsigned int bytes_read; | |
3620 | ||
3621 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
3622 | &bytes_read); | |
3623 | addr += bytes_read; | |
3624 | ||
3625 | const gdb_byte *const entry_end = addr + entry_length; | |
3626 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
3627 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
3628 | if (addr + entry_length > section->buffer + section->size) | |
3629 | { | |
3630 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3631 | "length %s exceeds section length %s, " | |
3632 | "ignoring .debug_aranges."), | |
3633 | objfile_name (objfile), entry_addr - section->buffer, | |
3634 | plongest (bytes_read + entry_length), | |
3635 | pulongest (section->size)); | |
3636 | return; | |
3637 | } | |
3638 | ||
3639 | /* The version number. */ | |
3640 | const uint16_t version = read_2_bytes (abfd, addr); | |
3641 | addr += 2; | |
3642 | if (version != 2) | |
3643 | { | |
3644 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3645 | "has unsupported version %d, ignoring .debug_aranges."), | |
3646 | objfile_name (objfile), entry_addr - section->buffer, | |
3647 | version); | |
3648 | return; | |
3649 | } | |
3650 | ||
3651 | const uint64_t debug_info_offset | |
3652 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
3653 | addr += offset_size; | |
3654 | const auto per_cu_it | |
3655 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
3656 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
3657 | { | |
3658 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3659 | "debug_info_offset %s does not exists, " | |
3660 | "ignoring .debug_aranges."), | |
3661 | objfile_name (objfile), entry_addr - section->buffer, | |
3662 | pulongest (debug_info_offset)); | |
3663 | return; | |
3664 | } | |
3665 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
3666 | ||
3667 | const uint8_t address_size = *addr++; | |
3668 | if (address_size < 1 || address_size > 8) | |
3669 | { | |
3670 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3671 | "address_size %u is invalid, ignoring .debug_aranges."), | |
3672 | objfile_name (objfile), entry_addr - section->buffer, | |
3673 | address_size); | |
3674 | return; | |
3675 | } | |
3676 | ||
3677 | const uint8_t segment_selector_size = *addr++; | |
3678 | if (segment_selector_size != 0) | |
3679 | { | |
3680 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3681 | "segment_selector_size %u is not supported, " | |
3682 | "ignoring .debug_aranges."), | |
3683 | objfile_name (objfile), entry_addr - section->buffer, | |
3684 | segment_selector_size); | |
3685 | return; | |
3686 | } | |
3687 | ||
3688 | /* Must pad to an alignment boundary that is twice the address | |
3689 | size. It is undocumented by the DWARF standard but GCC does | |
3690 | use it. */ | |
3691 | for (size_t padding = ((-(addr - section->buffer)) | |
3692 | & (2 * address_size - 1)); | |
3693 | padding > 0; padding--) | |
3694 | if (*addr++ != 0) | |
3695 | { | |
3696 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3697 | "padding is not zero, ignoring .debug_aranges."), | |
3698 | objfile_name (objfile), entry_addr - section->buffer); | |
3699 | return; | |
3700 | } | |
3701 | ||
3702 | for (;;) | |
3703 | { | |
3704 | if (addr + 2 * address_size > entry_end) | |
3705 | { | |
3706 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3707 | "address list is not properly terminated, " | |
3708 | "ignoring .debug_aranges."), | |
3709 | objfile_name (objfile), entry_addr - section->buffer); | |
3710 | return; | |
3711 | } | |
3712 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
3713 | dwarf5_byte_order); | |
3714 | addr += address_size; | |
3715 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
3716 | dwarf5_byte_order); | |
3717 | addr += address_size; | |
3718 | if (start == 0 && length == 0) | |
3719 | break; | |
3720 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
3721 | { | |
3722 | /* Symbol was eliminated due to a COMDAT group. */ | |
3723 | continue; | |
3724 | } | |
3725 | ULONGEST end = start + length; | |
3726 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr); | |
3727 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr); | |
3728 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); | |
3729 | } | |
3730 | } | |
3731 | ||
3732 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3733 | &objfile->objfile_obstack); | |
3734 | } | |
3735 | ||
59d7bcaf JK |
3736 | /* The hash function for strings in the mapped index. This is the same as |
3737 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
3738 | implementation. This is necessary because the hash function is tied to the | |
3739 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
3740 | SYMBOL_HASH_NEXT. |
3741 | ||
3742 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 3743 | |
9291a0cd | 3744 | static hashval_t |
559a7a62 | 3745 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
3746 | { |
3747 | const unsigned char *str = (const unsigned char *) p; | |
3748 | hashval_t r = 0; | |
3749 | unsigned char c; | |
3750 | ||
3751 | while ((c = *str++) != 0) | |
559a7a62 JK |
3752 | { |
3753 | if (index_version >= 5) | |
3754 | c = tolower (c); | |
3755 | r = r * 67 + c - 113; | |
3756 | } | |
9291a0cd TT |
3757 | |
3758 | return r; | |
3759 | } | |
3760 | ||
3761 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
3762 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
3763 | constant pool and return true. If NAME cannot be found, return |
3764 | false. */ | |
2fdf6df6 | 3765 | |
109483d9 | 3766 | static bool |
9291a0cd TT |
3767 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
3768 | offset_type **vec_out) | |
3769 | { | |
0cf03b49 | 3770 | offset_type hash; |
9291a0cd | 3771 | offset_type slot, step; |
559a7a62 | 3772 | int (*cmp) (const char *, const char *); |
9291a0cd | 3773 | |
791afaa2 | 3774 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 3775 | if (current_language->la_language == language_cplus |
45280282 IB |
3776 | || current_language->la_language == language_fortran |
3777 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3778 | { |
3779 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3780 | not contain any. */ | |
a8719064 | 3781 | |
72998fb3 | 3782 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3783 | { |
109483d9 | 3784 | without_params = cp_remove_params (name); |
0cf03b49 | 3785 | |
72998fb3 | 3786 | if (without_params != NULL) |
791afaa2 | 3787 | name = without_params.get (); |
0cf03b49 JK |
3788 | } |
3789 | } | |
3790 | ||
559a7a62 | 3791 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3792 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3793 | simulate our NAME being searched is also lowercased. */ |
3794 | hash = mapped_index_string_hash ((index->version == 4 | |
3795 | && case_sensitivity == case_sensitive_off | |
3796 | ? 5 : index->version), | |
3797 | name); | |
3798 | ||
f00a2de2 PA |
3799 | slot = hash & (index->symbol_table.size () - 1); |
3800 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 3801 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3802 | |
3803 | for (;;) | |
3804 | { | |
9291a0cd | 3805 | const char *str; |
f00a2de2 PA |
3806 | |
3807 | const auto &bucket = index->symbol_table[slot]; | |
3808 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 3809 | return false; |
9291a0cd | 3810 | |
f00a2de2 | 3811 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 3812 | if (!cmp (name, str)) |
9291a0cd TT |
3813 | { |
3814 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 3815 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 3816 | return true; |
9291a0cd TT |
3817 | } |
3818 | ||
f00a2de2 | 3819 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
3820 | } |
3821 | } | |
3822 | ||
2ec9a5e0 TT |
3823 | /* A helper function that reads the .gdb_index from SECTION and fills |
3824 | in MAP. FILENAME is the name of the file containing the section; | |
3825 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
3826 | ok to use deprecated sections. | |
3827 | ||
3828 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3829 | out parameters that are filled in with information about the CU and | |
3830 | TU lists in the section. | |
3831 | ||
3832 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 3833 | |
9291a0cd | 3834 | static int |
2ec9a5e0 TT |
3835 | read_index_from_section (struct objfile *objfile, |
3836 | const char *filename, | |
3837 | int deprecated_ok, | |
3838 | struct dwarf2_section_info *section, | |
3839 | struct mapped_index *map, | |
3840 | const gdb_byte **cu_list, | |
3841 | offset_type *cu_list_elements, | |
3842 | const gdb_byte **types_list, | |
3843 | offset_type *types_list_elements) | |
9291a0cd | 3844 | { |
948f8e3d | 3845 | const gdb_byte *addr; |
2ec9a5e0 | 3846 | offset_type version; |
b3b272e1 | 3847 | offset_type *metadata; |
1fd400ff | 3848 | int i; |
9291a0cd | 3849 | |
2ec9a5e0 | 3850 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 3851 | return 0; |
82430852 JK |
3852 | |
3853 | /* Older elfutils strip versions could keep the section in the main | |
3854 | executable while splitting it for the separate debug info file. */ | |
a32a8923 | 3855 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
3856 | return 0; |
3857 | ||
2ec9a5e0 | 3858 | dwarf2_read_section (objfile, section); |
9291a0cd | 3859 | |
2ec9a5e0 | 3860 | addr = section->buffer; |
9291a0cd | 3861 | /* Version check. */ |
1fd400ff | 3862 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3863 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3864 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3865 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3866 | indices. */ |
831adc1f | 3867 | if (version < 4) |
481860b3 GB |
3868 | { |
3869 | static int warning_printed = 0; | |
3870 | if (!warning_printed) | |
3871 | { | |
3872 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3873 | filename); |
481860b3 GB |
3874 | warning_printed = 1; |
3875 | } | |
3876 | return 0; | |
3877 | } | |
3878 | /* Index version 4 uses a different hash function than index version | |
3879 | 5 and later. | |
3880 | ||
3881 | Versions earlier than 6 did not emit psymbols for inlined | |
3882 | functions. Using these files will cause GDB not to be able to | |
3883 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3884 | indices unless the user has done |
3885 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3886 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3887 | { |
3888 | static int warning_printed = 0; | |
3889 | if (!warning_printed) | |
3890 | { | |
e615022a DE |
3891 | warning (_("\ |
3892 | Skipping deprecated .gdb_index section in %s.\n\ | |
3893 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3894 | to use the section anyway."), | |
2ec9a5e0 | 3895 | filename); |
481860b3 GB |
3896 | warning_printed = 1; |
3897 | } | |
3898 | return 0; | |
3899 | } | |
796a7ff8 | 3900 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3901 | of the TU (for symbols coming from TUs), |
3902 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3903 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3904 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3905 | These are just performance bugs, and we can't distinguish gdb-generated | |
3906 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3907 | |
481860b3 | 3908 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3909 | longer backward compatible. */ |
796a7ff8 | 3910 | if (version > 8) |
594e8718 | 3911 | return 0; |
9291a0cd | 3912 | |
559a7a62 | 3913 | map->version = version; |
2ec9a5e0 | 3914 | map->total_size = section->size; |
9291a0cd TT |
3915 | |
3916 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
3917 | |
3918 | i = 0; | |
2ec9a5e0 TT |
3919 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3920 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3921 | / 8); | |
1fd400ff TT |
3922 | ++i; |
3923 | ||
2ec9a5e0 TT |
3924 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3925 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3926 | - MAYBE_SWAP (metadata[i])) | |
3927 | / 8); | |
987d643c | 3928 | ++i; |
1fd400ff | 3929 | |
f00a2de2 PA |
3930 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3931 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3932 | map->address_table | |
3933 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3934 | ++i; |
3935 | ||
f00a2de2 PA |
3936 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3937 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3938 | map->symbol_table | |
3939 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3940 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3941 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3942 | |
f00a2de2 | 3943 | ++i; |
f9d83a0b | 3944 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3945 | |
2ec9a5e0 TT |
3946 | return 1; |
3947 | } | |
3948 | ||
927aa2e7 | 3949 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3950 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3951 | ||
3952 | static int | |
3953 | dwarf2_read_index (struct objfile *objfile) | |
3954 | { | |
3955 | struct mapped_index local_map, *map; | |
3956 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
3957 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3958 | struct dwz_file *dwz; |
ed2dc618 SM |
3959 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3960 | = get_dwarf2_per_objfile (objfile); | |
2ec9a5e0 | 3961 | |
4262abfb | 3962 | if (!read_index_from_section (objfile, objfile_name (objfile), |
2ec9a5e0 TT |
3963 | use_deprecated_index_sections, |
3964 | &dwarf2_per_objfile->gdb_index, &local_map, | |
3965 | &cu_list, &cu_list_elements, | |
3966 | &types_list, &types_list_elements)) | |
3967 | return 0; | |
3968 | ||
0fefef59 | 3969 | /* Don't use the index if it's empty. */ |
f00a2de2 | 3970 | if (local_map.symbol_table.empty ()) |
0fefef59 DE |
3971 | return 0; |
3972 | ||
2ec9a5e0 TT |
3973 | /* If there is a .dwz file, read it so we can get its CU list as |
3974 | well. */ | |
ed2dc618 | 3975 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 3976 | if (dwz != NULL) |
2ec9a5e0 | 3977 | { |
2ec9a5e0 TT |
3978 | struct mapped_index dwz_map; |
3979 | const gdb_byte *dwz_types_ignore; | |
3980 | offset_type dwz_types_elements_ignore; | |
3981 | ||
3982 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
3983 | 1, | |
3984 | &dwz->gdb_index, &dwz_map, | |
3985 | &dwz_list, &dwz_list_elements, | |
3986 | &dwz_types_ignore, | |
3987 | &dwz_types_elements_ignore)) | |
3988 | { | |
3989 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3990 | bfd_get_filename (dwz->dwz_bfd)); | |
3991 | return 0; | |
3992 | } | |
3993 | } | |
3994 | ||
74a0d9f6 JK |
3995 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
3996 | dwz_list_elements); | |
1fd400ff | 3997 | |
8b70b953 TT |
3998 | if (types_list_elements) |
3999 | { | |
4000 | struct dwarf2_section_info *section; | |
4001 | ||
4002 | /* We can only handle a single .debug_types when we have an | |
4003 | index. */ | |
4004 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
4005 | return 0; | |
4006 | ||
4007 | section = VEC_index (dwarf2_section_info_def, | |
4008 | dwarf2_per_objfile->types, 0); | |
4009 | ||
74a0d9f6 JK |
4010 | create_signatured_type_table_from_index (objfile, section, types_list, |
4011 | types_list_elements); | |
8b70b953 | 4012 | } |
9291a0cd | 4013 | |
ed2dc618 | 4014 | create_addrmap_from_index (dwarf2_per_objfile, &local_map); |
2ec9a5e0 | 4015 | |
8d749320 | 4016 | map = XOBNEW (&objfile->objfile_obstack, struct mapped_index); |
3f563c84 | 4017 | map = new (map) mapped_index (); |
2ec9a5e0 | 4018 | *map = local_map; |
9291a0cd TT |
4019 | |
4020 | dwarf2_per_objfile->index_table = map; | |
4021 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
4022 | dwarf2_per_objfile->quick_file_names_table = |
4023 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
4024 | |
4025 | return 1; | |
4026 | } | |
4027 | ||
dee91e82 | 4028 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 4029 | |
dee91e82 DE |
4030 | static void |
4031 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 4032 | const gdb_byte *info_ptr, |
dee91e82 DE |
4033 | struct die_info *comp_unit_die, |
4034 | int has_children, | |
4035 | void *data) | |
9291a0cd | 4036 | { |
dee91e82 | 4037 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 4038 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
518817b3 SM |
4039 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4040 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 4041 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 4042 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 4043 | struct attribute *attr; |
dee91e82 | 4044 | int i; |
7b9f3c50 DE |
4045 | void **slot; |
4046 | struct quick_file_names *qfn; | |
9291a0cd | 4047 | |
0186c6a7 DE |
4048 | gdb_assert (! this_cu->is_debug_types); |
4049 | ||
07261596 TT |
4050 | /* Our callers never want to match partial units -- instead they |
4051 | will match the enclosing full CU. */ | |
4052 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
4053 | { | |
4054 | this_cu->v.quick->no_file_data = 1; | |
4055 | return; | |
4056 | } | |
4057 | ||
0186c6a7 | 4058 | lh_cu = this_cu; |
7b9f3c50 | 4059 | slot = NULL; |
dee91e82 | 4060 | |
fff8551c | 4061 | line_header_up lh; |
9c541725 | 4062 | sect_offset line_offset {}; |
fff8551c | 4063 | |
dee91e82 | 4064 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
9291a0cd TT |
4065 | if (attr) |
4066 | { | |
7b9f3c50 DE |
4067 | struct quick_file_names find_entry; |
4068 | ||
9c541725 | 4069 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
4070 | |
4071 | /* We may have already read in this line header (TU line header sharing). | |
4072 | If we have we're done. */ | |
094b34ac | 4073 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 4074 | find_entry.hash.line_sect_off = line_offset; |
7b9f3c50 DE |
4075 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
4076 | &find_entry, INSERT); | |
4077 | if (*slot != NULL) | |
4078 | { | |
9a3c8263 | 4079 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 4080 | return; |
7b9f3c50 DE |
4081 | } |
4082 | ||
3019eac3 | 4083 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
4084 | } |
4085 | if (lh == NULL) | |
4086 | { | |
094b34ac | 4087 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 4088 | return; |
9291a0cd TT |
4089 | } |
4090 | ||
8d749320 | 4091 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 4092 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 4093 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
4094 | gdb_assert (slot != NULL); |
4095 | *slot = qfn; | |
9291a0cd | 4096 | |
d721ba37 | 4097 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 4098 | |
fff8551c | 4099 | qfn->num_file_names = lh->file_names.size (); |
8d749320 | 4100 | qfn->file_names = |
fff8551c PA |
4101 | XOBNEWVEC (&objfile->objfile_obstack, const char *, lh->file_names.size ()); |
4102 | for (i = 0; i < lh->file_names.size (); ++i) | |
4103 | qfn->file_names[i] = file_full_name (i + 1, lh.get (), fnd.comp_dir); | |
7b9f3c50 | 4104 | qfn->real_names = NULL; |
9291a0cd | 4105 | |
094b34ac | 4106 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
4107 | } |
4108 | ||
4109 | /* A helper for the "quick" functions which attempts to read the line | |
4110 | table for THIS_CU. */ | |
4111 | ||
4112 | static struct quick_file_names * | |
e4a48d9d | 4113 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 4114 | { |
0186c6a7 DE |
4115 | /* This should never be called for TUs. */ |
4116 | gdb_assert (! this_cu->is_debug_types); | |
4117 | /* Nor type unit groups. */ | |
4118 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 4119 | |
dee91e82 DE |
4120 | if (this_cu->v.quick->file_names != NULL) |
4121 | return this_cu->v.quick->file_names; | |
4122 | /* If we know there is no line data, no point in looking again. */ | |
4123 | if (this_cu->v.quick->no_file_data) | |
4124 | return NULL; | |
4125 | ||
0186c6a7 | 4126 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
4127 | |
4128 | if (this_cu->v.quick->no_file_data) | |
4129 | return NULL; | |
4130 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
4131 | } |
4132 | ||
4133 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 4134 | real path for a given file name from the line table. */ |
2fdf6df6 | 4135 | |
9291a0cd | 4136 | static const char * |
7b9f3c50 DE |
4137 | dw2_get_real_path (struct objfile *objfile, |
4138 | struct quick_file_names *qfn, int index) | |
9291a0cd | 4139 | { |
7b9f3c50 DE |
4140 | if (qfn->real_names == NULL) |
4141 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 4142 | qfn->num_file_names, const char *); |
9291a0cd | 4143 | |
7b9f3c50 | 4144 | if (qfn->real_names[index] == NULL) |
14278e1f | 4145 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 4146 | |
7b9f3c50 | 4147 | return qfn->real_names[index]; |
9291a0cd TT |
4148 | } |
4149 | ||
4150 | static struct symtab * | |
4151 | dw2_find_last_source_symtab (struct objfile *objfile) | |
4152 | { | |
ed2dc618 SM |
4153 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4154 | = get_dwarf2_per_objfile (objfile); | |
4155 | int index = dwarf2_per_objfile->n_comp_units - 1; | |
4156 | dwarf2_per_cu_data *dwarf_cu = dw2_get_cutu (dwarf2_per_objfile, index); | |
4157 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu); | |
ae2de4f8 | 4158 | |
43f3e411 DE |
4159 | if (cust == NULL) |
4160 | return NULL; | |
ed2dc618 | 4161 | |
43f3e411 | 4162 | return compunit_primary_filetab (cust); |
9291a0cd TT |
4163 | } |
4164 | ||
7b9f3c50 DE |
4165 | /* Traversal function for dw2_forget_cached_source_info. */ |
4166 | ||
4167 | static int | |
4168 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 4169 | { |
7b9f3c50 | 4170 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 4171 | |
7b9f3c50 | 4172 | if (file_data->real_names) |
9291a0cd | 4173 | { |
7b9f3c50 | 4174 | int i; |
9291a0cd | 4175 | |
7b9f3c50 | 4176 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 4177 | { |
7b9f3c50 DE |
4178 | xfree ((void*) file_data->real_names[i]); |
4179 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
4180 | } |
4181 | } | |
7b9f3c50 DE |
4182 | |
4183 | return 1; | |
4184 | } | |
4185 | ||
4186 | static void | |
4187 | dw2_forget_cached_source_info (struct objfile *objfile) | |
4188 | { | |
ed2dc618 SM |
4189 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4190 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 DE |
4191 | |
4192 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
4193 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
4194 | } |
4195 | ||
f8eba3c6 TT |
4196 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
4197 | the symtabs and calls the iterator. */ | |
4198 | ||
4199 | static int | |
4200 | dw2_map_expand_apply (struct objfile *objfile, | |
4201 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 4202 | const char *name, const char *real_path, |
14bc53a8 | 4203 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 4204 | { |
43f3e411 | 4205 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
4206 | |
4207 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 4208 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
4209 | return 0; |
4210 | ||
4211 | /* This may expand more than one symtab, and we want to iterate over | |
4212 | all of them. */ | |
a0f42c21 | 4213 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 4214 | |
14bc53a8 PA |
4215 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
4216 | last_made, callback); | |
f8eba3c6 TT |
4217 | } |
4218 | ||
4219 | /* Implementation of the map_symtabs_matching_filename method. */ | |
4220 | ||
14bc53a8 PA |
4221 | static bool |
4222 | dw2_map_symtabs_matching_filename | |
4223 | (struct objfile *objfile, const char *name, const char *real_path, | |
4224 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd TT |
4225 | { |
4226 | int i; | |
c011a4f4 | 4227 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
4228 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4229 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 4230 | |
848e3e78 DE |
4231 | /* The rule is CUs specify all the files, including those used by |
4232 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 4233 | |
ed2dc618 | 4234 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
4235 | { |
4236 | int j; | |
ed2dc618 | 4237 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (dwarf2_per_objfile, i); |
7b9f3c50 | 4238 | struct quick_file_names *file_data; |
9291a0cd | 4239 | |
3d7bb9d9 | 4240 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4241 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4242 | continue; |
4243 | ||
e4a48d9d | 4244 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4245 | if (file_data == NULL) |
9291a0cd TT |
4246 | continue; |
4247 | ||
7b9f3c50 | 4248 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4249 | { |
7b9f3c50 | 4250 | const char *this_name = file_data->file_names[j]; |
da235a7c | 4251 | const char *this_real_name; |
9291a0cd | 4252 | |
af529f8f | 4253 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 4254 | { |
f5b95b50 | 4255 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
4256 | callback)) |
4257 | return true; | |
288e77a7 | 4258 | continue; |
4aac40c8 | 4259 | } |
9291a0cd | 4260 | |
c011a4f4 DE |
4261 | /* Before we invoke realpath, which can get expensive when many |
4262 | files are involved, do a quick comparison of the basenames. */ | |
4263 | if (! basenames_may_differ | |
4264 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
4265 | continue; | |
4266 | ||
da235a7c JK |
4267 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
4268 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 4269 | { |
da235a7c | 4270 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
4271 | callback)) |
4272 | return true; | |
288e77a7 | 4273 | continue; |
da235a7c | 4274 | } |
9291a0cd | 4275 | |
da235a7c JK |
4276 | if (real_path != NULL) |
4277 | { | |
af529f8f JK |
4278 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
4279 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 4280 | if (this_real_name != NULL |
af529f8f | 4281 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 4282 | { |
f5b95b50 | 4283 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
4284 | callback)) |
4285 | return true; | |
288e77a7 | 4286 | continue; |
9291a0cd TT |
4287 | } |
4288 | } | |
4289 | } | |
4290 | } | |
4291 | ||
14bc53a8 | 4292 | return false; |
9291a0cd TT |
4293 | } |
4294 | ||
da51c347 DE |
4295 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
4296 | ||
4297 | struct dw2_symtab_iterator | |
9291a0cd | 4298 | { |
ed2dc618 SM |
4299 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
4300 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
da51c347 DE |
4301 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ |
4302 | int want_specific_block; | |
4303 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
4304 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
4305 | int block_index; | |
4306 | /* The kind of symbol we're looking for. */ | |
4307 | domain_enum domain; | |
4308 | /* The list of CUs from the index entry of the symbol, | |
4309 | or NULL if not found. */ | |
4310 | offset_type *vec; | |
4311 | /* The next element in VEC to look at. */ | |
4312 | int next; | |
4313 | /* The number of elements in VEC, or zero if there is no match. */ | |
4314 | int length; | |
8943b874 DE |
4315 | /* Have we seen a global version of the symbol? |
4316 | If so we can ignore all further global instances. | |
4317 | This is to work around gold/15646, inefficient gold-generated | |
4318 | indices. */ | |
4319 | int global_seen; | |
da51c347 | 4320 | }; |
9291a0cd | 4321 | |
da51c347 DE |
4322 | /* Initialize the index symtab iterator ITER. |
4323 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
4324 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 4325 | |
9291a0cd | 4326 | static void |
da51c347 | 4327 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 4328 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
da51c347 DE |
4329 | int want_specific_block, |
4330 | int block_index, | |
4331 | domain_enum domain, | |
4332 | const char *name) | |
4333 | { | |
ed2dc618 | 4334 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
4335 | iter->want_specific_block = want_specific_block; |
4336 | iter->block_index = block_index; | |
4337 | iter->domain = domain; | |
4338 | iter->next = 0; | |
8943b874 | 4339 | iter->global_seen = 0; |
da51c347 | 4340 | |
ed2dc618 SM |
4341 | mapped_index *index = dwarf2_per_objfile->index_table; |
4342 | ||
4343 | /* index is NULL if OBJF_READNOW. */ | |
4344 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
4345 | iter->length = MAYBE_SWAP (*iter->vec); |
4346 | else | |
4347 | { | |
4348 | iter->vec = NULL; | |
4349 | iter->length = 0; | |
4350 | } | |
4351 | } | |
4352 | ||
4353 | /* Return the next matching CU or NULL if there are no more. */ | |
4354 | ||
4355 | static struct dwarf2_per_cu_data * | |
4356 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
4357 | { | |
ed2dc618 SM |
4358 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
4359 | ||
da51c347 DE |
4360 | for ( ; iter->next < iter->length; ++iter->next) |
4361 | { | |
4362 | offset_type cu_index_and_attrs = | |
4363 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
4364 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 | 4365 | struct dwarf2_per_cu_data *per_cu; |
da51c347 DE |
4366 | int want_static = iter->block_index != GLOBAL_BLOCK; |
4367 | /* This value is only valid for index versions >= 7. */ | |
4368 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4369 | gdb_index_symbol_kind symbol_kind = | |
4370 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4371 | /* Only check the symbol attributes if they're present. | |
4372 | Indices prior to version 7 don't record them, | |
4373 | and indices >= 7 may elide them for certain symbols | |
4374 | (gold does this). */ | |
4375 | int attrs_valid = | |
ed2dc618 | 4376 | (dwarf2_per_objfile->index_table->version >= 7 |
da51c347 DE |
4377 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
4378 | ||
3190f0c6 DE |
4379 | /* Don't crash on bad data. */ |
4380 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
4381 | + dwarf2_per_objfile->n_type_units)) | |
4382 | { | |
4383 | complaint (&symfile_complaints, | |
4384 | _(".gdb_index entry has bad CU index" | |
4262abfb JK |
4385 | " [in module %s]"), |
4386 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
4387 | continue; |
4388 | } | |
4389 | ||
ed2dc618 | 4390 | per_cu = dw2_get_cutu (dwarf2_per_objfile, cu_index); |
3190f0c6 | 4391 | |
da51c347 | 4392 | /* Skip if already read in. */ |
43f3e411 | 4393 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
4394 | continue; |
4395 | ||
8943b874 DE |
4396 | /* Check static vs global. */ |
4397 | if (attrs_valid) | |
4398 | { | |
4399 | if (iter->want_specific_block | |
4400 | && want_static != is_static) | |
4401 | continue; | |
4402 | /* Work around gold/15646. */ | |
4403 | if (!is_static && iter->global_seen) | |
4404 | continue; | |
4405 | if (!is_static) | |
4406 | iter->global_seen = 1; | |
4407 | } | |
da51c347 DE |
4408 | |
4409 | /* Only check the symbol's kind if it has one. */ | |
4410 | if (attrs_valid) | |
4411 | { | |
4412 | switch (iter->domain) | |
4413 | { | |
4414 | case VAR_DOMAIN: | |
4415 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
4416 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
4417 | /* Some types are also in VAR_DOMAIN. */ | |
4418 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4419 | continue; | |
4420 | break; | |
4421 | case STRUCT_DOMAIN: | |
4422 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4423 | continue; | |
4424 | break; | |
4425 | case LABEL_DOMAIN: | |
4426 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4427 | continue; | |
4428 | break; | |
4429 | default: | |
4430 | break; | |
4431 | } | |
4432 | } | |
4433 | ||
4434 | ++iter->next; | |
4435 | return per_cu; | |
4436 | } | |
4437 | ||
4438 | return NULL; | |
4439 | } | |
4440 | ||
43f3e411 | 4441 | static struct compunit_symtab * |
da51c347 DE |
4442 | dw2_lookup_symbol (struct objfile *objfile, int block_index, |
4443 | const char *name, domain_enum domain) | |
9291a0cd | 4444 | { |
43f3e411 | 4445 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
4446 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4447 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 4448 | |
b5ec771e PA |
4449 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
4450 | ||
ed2dc618 SM |
4451 | struct dw2_symtab_iterator iter; |
4452 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4453 | |
ed2dc618 | 4454 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, 1, block_index, domain, name); |
9291a0cd | 4455 | |
ed2dc618 SM |
4456 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
4457 | { | |
4458 | struct symbol *sym, *with_opaque = NULL; | |
4459 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu); | |
4460 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
4461 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
da51c347 | 4462 | |
ed2dc618 SM |
4463 | sym = block_find_symbol (block, name, domain, |
4464 | block_find_non_opaque_type_preferred, | |
4465 | &with_opaque); | |
b2e2f908 | 4466 | |
ed2dc618 SM |
4467 | /* Some caution must be observed with overloaded functions |
4468 | and methods, since the index will not contain any overload | |
4469 | information (but NAME might contain it). */ | |
da51c347 | 4470 | |
ed2dc618 SM |
4471 | if (sym != NULL |
4472 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
4473 | return stab; | |
4474 | if (with_opaque != NULL | |
4475 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
4476 | stab_best = stab; | |
da51c347 | 4477 | |
ed2dc618 | 4478 | /* Keep looking through other CUs. */ |
9291a0cd | 4479 | } |
9291a0cd | 4480 | |
da51c347 | 4481 | return stab_best; |
9291a0cd TT |
4482 | } |
4483 | ||
4484 | static void | |
4485 | dw2_print_stats (struct objfile *objfile) | |
4486 | { | |
ed2dc618 SM |
4487 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4488 | = get_dwarf2_per_objfile (objfile); | |
4489 | int total = dwarf2_per_objfile->n_comp_units + dwarf2_per_objfile->n_type_units; | |
4490 | int count = 0; | |
9291a0cd | 4491 | |
ed2dc618 | 4492 | for (int i = 0; i < total; ++i) |
9291a0cd | 4493 | { |
ed2dc618 | 4494 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
9291a0cd | 4495 | |
43f3e411 | 4496 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4497 | ++count; |
4498 | } | |
e4a48d9d | 4499 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
4500 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
4501 | } | |
4502 | ||
779bd270 DE |
4503 | /* This dumps minimal information about the index. |
4504 | It is called via "mt print objfiles". | |
4505 | One use is to verify .gdb_index has been loaded by the | |
4506 | gdb.dwarf2/gdb-index.exp testcase. */ | |
4507 | ||
9291a0cd TT |
4508 | static void |
4509 | dw2_dump (struct objfile *objfile) | |
4510 | { | |
ed2dc618 SM |
4511 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4512 | = get_dwarf2_per_objfile (objfile); | |
4513 | ||
779bd270 DE |
4514 | gdb_assert (dwarf2_per_objfile->using_index); |
4515 | printf_filtered (".gdb_index:"); | |
4516 | if (dwarf2_per_objfile->index_table != NULL) | |
4517 | { | |
4518 | printf_filtered (" version %d\n", | |
4519 | dwarf2_per_objfile->index_table->version); | |
4520 | } | |
4521 | else | |
4522 | printf_filtered (" faked for \"readnow\"\n"); | |
4523 | printf_filtered ("\n"); | |
9291a0cd TT |
4524 | } |
4525 | ||
4526 | static void | |
3189cb12 DE |
4527 | dw2_relocate (struct objfile *objfile, |
4528 | const struct section_offsets *new_offsets, | |
4529 | const struct section_offsets *delta) | |
9291a0cd TT |
4530 | { |
4531 | /* There's nothing to relocate here. */ | |
4532 | } | |
4533 | ||
4534 | static void | |
4535 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
4536 | const char *func_name) | |
4537 | { | |
ed2dc618 SM |
4538 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4539 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 4540 | |
ed2dc618 SM |
4541 | struct dw2_symtab_iterator iter; |
4542 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4543 | |
ed2dc618 SM |
4544 | /* Note: It doesn't matter what we pass for block_index here. */ |
4545 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
4546 | func_name); | |
da51c347 | 4547 | |
ed2dc618 SM |
4548 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
4549 | dw2_instantiate_symtab (per_cu); | |
da51c347 | 4550 | |
9291a0cd TT |
4551 | } |
4552 | ||
4553 | static void | |
4554 | dw2_expand_all_symtabs (struct objfile *objfile) | |
4555 | { | |
ed2dc618 SM |
4556 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4557 | = get_dwarf2_per_objfile (objfile); | |
4558 | int total_units = (dwarf2_per_objfile->n_comp_units | |
4559 | + dwarf2_per_objfile->n_type_units); | |
9291a0cd | 4560 | |
ed2dc618 | 4561 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 4562 | { |
ed2dc618 SM |
4563 | struct dwarf2_per_cu_data *per_cu |
4564 | = dw2_get_cutu (dwarf2_per_objfile, i); | |
9291a0cd | 4565 | |
a0f42c21 | 4566 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
4567 | } |
4568 | } | |
4569 | ||
4570 | static void | |
652a8996 JK |
4571 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
4572 | const char *fullname) | |
9291a0cd | 4573 | { |
ed2dc618 SM |
4574 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4575 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
4576 | |
4577 | /* We don't need to consider type units here. | |
4578 | This is only called for examining code, e.g. expand_line_sal. | |
4579 | There can be an order of magnitude (or more) more type units | |
4580 | than comp units, and we avoid them if we can. */ | |
4581 | ||
ed2dc618 | 4582 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
4583 | { |
4584 | int j; | |
ed2dc618 | 4585 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
7b9f3c50 | 4586 | struct quick_file_names *file_data; |
9291a0cd | 4587 | |
3d7bb9d9 | 4588 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4589 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4590 | continue; |
4591 | ||
e4a48d9d | 4592 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4593 | if (file_data == NULL) |
9291a0cd TT |
4594 | continue; |
4595 | ||
7b9f3c50 | 4596 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4597 | { |
652a8996 JK |
4598 | const char *this_fullname = file_data->file_names[j]; |
4599 | ||
4600 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 4601 | { |
a0f42c21 | 4602 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
4603 | break; |
4604 | } | |
4605 | } | |
4606 | } | |
4607 | } | |
4608 | ||
9291a0cd | 4609 | static void |
ade7ed9e | 4610 | dw2_map_matching_symbols (struct objfile *objfile, |
fe978cb0 | 4611 | const char * name, domain_enum domain, |
ade7ed9e | 4612 | int global, |
40658b94 PH |
4613 | int (*callback) (struct block *, |
4614 | struct symbol *, void *), | |
b5ec771e | 4615 | void *data, symbol_name_match_type match, |
2edb89d3 | 4616 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 4617 | { |
40658b94 | 4618 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
4619 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
4620 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
4621 | } |
4622 | ||
b5ec771e PA |
4623 | /* Symbol name matcher for .gdb_index names. |
4624 | ||
4625 | Symbol names in .gdb_index have a few particularities: | |
4626 | ||
4627 | - There's no indication of which is the language of each symbol. | |
4628 | ||
4629 | Since each language has its own symbol name matching algorithm, | |
4630 | and we don't know which language is the right one, we must match | |
3f563c84 PA |
4631 | each symbol against all languages. This would be a potential |
4632 | performance problem if it were not mitigated by the | |
4633 | mapped_index::name_components lookup table, which significantly | |
4634 | reduces the number of times we need to call into this matcher, | |
4635 | making it a non-issue. | |
b5ec771e PA |
4636 | |
4637 | - Symbol names in the index have no overload (parameter) | |
4638 | information. I.e., in C++, "foo(int)" and "foo(long)" both | |
4639 | appear as "foo" in the index, for example. | |
4640 | ||
4641 | This means that the lookup names passed to the symbol name | |
4642 | matcher functions must have no parameter information either | |
4643 | because (e.g.) symbol search name "foo" does not match | |
4644 | lookup-name "foo(int)" [while swapping search name for lookup | |
4645 | name would match]. | |
4646 | */ | |
4647 | class gdb_index_symbol_name_matcher | |
4648 | { | |
4649 | public: | |
4650 | /* Prepares the vector of comparison functions for LOOKUP_NAME. */ | |
4651 | gdb_index_symbol_name_matcher (const lookup_name_info &lookup_name); | |
4652 | ||
4653 | /* Walk all the matcher routines and match SYMBOL_NAME against them. | |
4654 | Returns true if any matcher matches. */ | |
4655 | bool matches (const char *symbol_name); | |
4656 | ||
4657 | private: | |
4658 | /* A reference to the lookup name we're matching against. */ | |
4659 | const lookup_name_info &m_lookup_name; | |
4660 | ||
4661 | /* A vector holding all the different symbol name matchers, for all | |
4662 | languages. */ | |
4663 | std::vector<symbol_name_matcher_ftype *> m_symbol_name_matcher_funcs; | |
4664 | }; | |
4665 | ||
4666 | gdb_index_symbol_name_matcher::gdb_index_symbol_name_matcher | |
4667 | (const lookup_name_info &lookup_name) | |
4668 | : m_lookup_name (lookup_name) | |
4669 | { | |
4670 | /* Prepare the vector of comparison functions upfront, to avoid | |
4671 | doing the same work for each symbol. Care is taken to avoid | |
4672 | matching with the same matcher more than once if/when multiple | |
4673 | languages use the same matcher function. */ | |
4674 | auto &matchers = m_symbol_name_matcher_funcs; | |
4675 | matchers.reserve (nr_languages); | |
4676 | ||
4677 | matchers.push_back (default_symbol_name_matcher); | |
4678 | ||
4679 | for (int i = 0; i < nr_languages; i++) | |
4680 | { | |
4681 | const language_defn *lang = language_def ((enum language) i); | |
c63d3e8d | 4682 | symbol_name_matcher_ftype *name_matcher |
618daa93 | 4683 | = get_symbol_name_matcher (lang, m_lookup_name); |
c63d3e8d PA |
4684 | |
4685 | /* Don't insert the same comparison routine more than once. | |
4686 | Note that we do this linear walk instead of a seemingly | |
4687 | cheaper sorted insert, or use a std::set or something like | |
4688 | that, because relative order of function addresses is not | |
4689 | stable. This is not a problem in practice because the number | |
4690 | of supported languages is low, and the cost here is tiny | |
4691 | compared to the number of searches we'll do afterwards using | |
4692 | this object. */ | |
4693 | if (name_matcher != default_symbol_name_matcher | |
4694 | && (std::find (matchers.begin (), matchers.end (), name_matcher) | |
4695 | == matchers.end ())) | |
4696 | matchers.push_back (name_matcher); | |
b5ec771e PA |
4697 | } |
4698 | } | |
4699 | ||
4700 | bool | |
4701 | gdb_index_symbol_name_matcher::matches (const char *symbol_name) | |
4702 | { | |
4703 | for (auto matches_name : m_symbol_name_matcher_funcs) | |
4704 | if (matches_name (symbol_name, m_lookup_name, NULL)) | |
4705 | return true; | |
4706 | ||
4707 | return false; | |
4708 | } | |
4709 | ||
e1ef7d7a PA |
4710 | /* Starting from a search name, return the string that finds the upper |
4711 | bound of all strings that start with SEARCH_NAME in a sorted name | |
4712 | list. Returns the empty string to indicate that the upper bound is | |
4713 | the end of the list. */ | |
4714 | ||
4715 | static std::string | |
4716 | make_sort_after_prefix_name (const char *search_name) | |
4717 | { | |
4718 | /* When looking to complete "func", we find the upper bound of all | |
4719 | symbols that start with "func" by looking for where we'd insert | |
4720 | the closest string that would follow "func" in lexicographical | |
4721 | order. Usually, that's "func"-with-last-character-incremented, | |
4722 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
4723 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
4724 | Especially mind the 0xff character, which is a valid character in | |
4725 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
4726 | rule out compilers allowing it in identifiers. Note that | |
4727 | conveniently, strcmp/strcasecmp are specified to compare | |
4728 | characters interpreted as unsigned char. So what we do is treat | |
4729 | the whole string as a base 256 number composed of a sequence of | |
4730 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
4731 | to 0, and carries 1 to the following more-significant position. | |
4732 | If the very first character in SEARCH_NAME ends up incremented | |
4733 | and carries/overflows, then the upper bound is the end of the | |
4734 | list. The string after the empty string is also the empty | |
4735 | string. | |
4736 | ||
4737 | Some examples of this operation: | |
4738 | ||
4739 | SEARCH_NAME => "+1" RESULT | |
4740 | ||
4741 | "abc" => "abd" | |
4742 | "ab\xff" => "ac" | |
4743 | "\xff" "a" "\xff" => "\xff" "b" | |
4744 | "\xff" => "" | |
4745 | "\xff\xff" => "" | |
4746 | "" => "" | |
4747 | ||
4748 | Then, with these symbols for example: | |
4749 | ||
4750 | func | |
4751 | func1 | |
4752 | fund | |
4753 | ||
4754 | completing "func" looks for symbols between "func" and | |
4755 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
4756 | which finds "func" and "func1", but not "fund". | |
4757 | ||
4758 | And with: | |
4759 | ||
4760 | funcÿ (Latin1 'ÿ' [0xff]) | |
4761 | funcÿ1 | |
4762 | fund | |
4763 | ||
4764 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
4765 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
4766 | ||
4767 | And with: | |
4768 | ||
4769 | ÿÿ (Latin1 'ÿ' [0xff]) | |
4770 | ÿÿ1 | |
4771 | ||
4772 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
4773 | the end of the list. | |
4774 | */ | |
4775 | std::string after = search_name; | |
4776 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
4777 | after.pop_back (); | |
4778 | if (!after.empty ()) | |
4779 | after.back () = (unsigned char) after.back () + 1; | |
4780 | return after; | |
4781 | } | |
4782 | ||
5c58de74 | 4783 | /* See declaration. */ |
61d96d7e | 4784 | |
5c58de74 PA |
4785 | std::pair<std::vector<name_component>::const_iterator, |
4786 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 4787 | mapped_index_base::find_name_components_bounds |
5c58de74 | 4788 | (const lookup_name_info &lookup_name_without_params) const |
3f563c84 | 4789 | { |
5c58de74 PA |
4790 | auto *name_cmp |
4791 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 PA |
4792 | |
4793 | const char *cplus | |
c62446b1 | 4794 | = lookup_name_without_params.cplus ().lookup_name ().c_str (); |
9291a0cd | 4795 | |
3f563c84 PA |
4796 | /* Comparison function object for lower_bound that matches against a |
4797 | given symbol name. */ | |
4798 | auto lookup_compare_lower = [&] (const name_component &elem, | |
4799 | const char *name) | |
4800 | { | |
5c58de74 | 4801 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4802 | const char *elem_name = elem_qualified + elem.name_offset; |
4803 | return name_cmp (elem_name, name) < 0; | |
4804 | }; | |
4805 | ||
4806 | /* Comparison function object for upper_bound that matches against a | |
4807 | given symbol name. */ | |
4808 | auto lookup_compare_upper = [&] (const char *name, | |
4809 | const name_component &elem) | |
4810 | { | |
5c58de74 | 4811 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4812 | const char *elem_name = elem_qualified + elem.name_offset; |
4813 | return name_cmp (name, elem_name) < 0; | |
4814 | }; | |
4815 | ||
5c58de74 PA |
4816 | auto begin = this->name_components.begin (); |
4817 | auto end = this->name_components.end (); | |
3f563c84 PA |
4818 | |
4819 | /* Find the lower bound. */ | |
4820 | auto lower = [&] () | |
4821 | { | |
5c58de74 | 4822 | if (lookup_name_without_params.completion_mode () && cplus[0] == '\0') |
3f563c84 PA |
4823 | return begin; |
4824 | else | |
4825 | return std::lower_bound (begin, end, cplus, lookup_compare_lower); | |
4826 | } (); | |
4827 | ||
4828 | /* Find the upper bound. */ | |
4829 | auto upper = [&] () | |
4830 | { | |
5c58de74 | 4831 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4832 | { |
e1ef7d7a PA |
4833 | /* In completion mode, we want UPPER to point past all |
4834 | symbols names that have the same prefix. I.e., with | |
4835 | these symbols, and completing "func": | |
4836 | ||
4837 | function << lower bound | |
4838 | function1 | |
4839 | other_function << upper bound | |
4840 | ||
4841 | We find the upper bound by looking for the insertion | |
4842 | point of "func"-with-last-character-incremented, | |
4843 | i.e. "fund". */ | |
4844 | std::string after = make_sort_after_prefix_name (cplus); | |
4845 | if (after.empty ()) | |
3f563c84 | 4846 | return end; |
e6b2f5ef PA |
4847 | return std::lower_bound (lower, end, after.c_str (), |
4848 | lookup_compare_lower); | |
3f563c84 PA |
4849 | } |
4850 | else | |
4851 | return std::upper_bound (lower, end, cplus, lookup_compare_upper); | |
4852 | } (); | |
4853 | ||
5c58de74 PA |
4854 | return {lower, upper}; |
4855 | } | |
4856 | ||
4857 | /* See declaration. */ | |
4858 | ||
4859 | void | |
44ed8f3e | 4860 | mapped_index_base::build_name_components () |
5c58de74 PA |
4861 | { |
4862 | if (!this->name_components.empty ()) | |
4863 | return; | |
4864 | ||
4865 | this->name_components_casing = case_sensitivity; | |
4866 | auto *name_cmp | |
4867 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4868 | ||
4869 | /* The code below only knows how to break apart components of C++ | |
4870 | symbol names (and other languages that use '::' as | |
4871 | namespace/module separator). If we add support for wild matching | |
4872 | to some language that uses some other operator (E.g., Ada, Go and | |
4873 | D use '.'), then we'll need to try splitting the symbol name | |
4874 | according to that language too. Note that Ada does support wild | |
4875 | matching, but doesn't currently support .gdb_index. */ | |
44ed8f3e PA |
4876 | auto count = this->symbol_name_count (); |
4877 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4878 | { |
44ed8f3e | 4879 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4880 | continue; |
4881 | ||
4882 | const char *name = this->symbol_name_at (idx); | |
4883 | ||
4884 | /* Add each name component to the name component table. */ | |
4885 | unsigned int previous_len = 0; | |
4886 | for (unsigned int current_len = cp_find_first_component (name); | |
4887 | name[current_len] != '\0'; | |
4888 | current_len += cp_find_first_component (name + current_len)) | |
4889 | { | |
4890 | gdb_assert (name[current_len] == ':'); | |
4891 | this->name_components.push_back ({previous_len, idx}); | |
4892 | /* Skip the '::'. */ | |
4893 | current_len += 2; | |
4894 | previous_len = current_len; | |
4895 | } | |
4896 | this->name_components.push_back ({previous_len, idx}); | |
4897 | } | |
4898 | ||
4899 | /* Sort name_components elements by name. */ | |
4900 | auto name_comp_compare = [&] (const name_component &left, | |
4901 | const name_component &right) | |
4902 | { | |
4903 | const char *left_qualified = this->symbol_name_at (left.idx); | |
4904 | const char *right_qualified = this->symbol_name_at (right.idx); | |
4905 | ||
4906 | const char *left_name = left_qualified + left.name_offset; | |
4907 | const char *right_name = right_qualified + right.name_offset; | |
4908 | ||
4909 | return name_cmp (left_name, right_name) < 0; | |
4910 | }; | |
4911 | ||
4912 | std::sort (this->name_components.begin (), | |
4913 | this->name_components.end (), | |
4914 | name_comp_compare); | |
4915 | } | |
4916 | ||
4917 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4918 | mapped_index_base instead of the containing objfile. This is split |
4919 | to a separate function in order to be able to unit test the | |
4920 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4921 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4922 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4923 | |
4924 | static void | |
4925 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4926 | (mapped_index_base &index, |
5c58de74 PA |
4927 | const lookup_name_info &lookup_name_in, |
4928 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4929 | enum search_domain kind, | |
4930 | gdb::function_view<void (offset_type)> match_callback) | |
4931 | { | |
4932 | lookup_name_info lookup_name_without_params | |
4933 | = lookup_name_in.make_ignore_params (); | |
4934 | gdb_index_symbol_name_matcher lookup_name_matcher | |
4935 | (lookup_name_without_params); | |
4936 | ||
4937 | /* Build the symbol name component sorted vector, if we haven't | |
4938 | yet. */ | |
4939 | index.build_name_components (); | |
4940 | ||
4941 | auto bounds = index.find_name_components_bounds (lookup_name_without_params); | |
4942 | ||
3f563c84 PA |
4943 | /* Now for each symbol name in range, check to see if we have a name |
4944 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4945 | ||
4946 | /* The same symbol may appear more than once in the range though. | |
4947 | E.g., if we're looking for symbols that complete "w", and we have | |
4948 | a symbol named "w1::w2", we'll find the two name components for | |
4949 | that same symbol in the range. To be sure we only call the | |
4950 | callback once per symbol, we first collect the symbol name | |
4951 | indexes that matched in a temporary vector and ignore | |
4952 | duplicates. */ | |
4953 | std::vector<offset_type> matches; | |
5c58de74 | 4954 | matches.reserve (std::distance (bounds.first, bounds.second)); |
3f563c84 | 4955 | |
5c58de74 | 4956 | for (; bounds.first != bounds.second; ++bounds.first) |
3f563c84 | 4957 | { |
5c58de74 | 4958 | const char *qualified = index.symbol_name_at (bounds.first->idx); |
3f563c84 PA |
4959 | |
4960 | if (!lookup_name_matcher.matches (qualified) | |
4961 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
9291a0cd TT |
4962 | continue; |
4963 | ||
5c58de74 | 4964 | matches.push_back (bounds.first->idx); |
3f563c84 PA |
4965 | } |
4966 | ||
4967 | std::sort (matches.begin (), matches.end ()); | |
4968 | ||
4969 | /* Finally call the callback, once per match. */ | |
4970 | ULONGEST prev = -1; | |
4971 | for (offset_type idx : matches) | |
4972 | { | |
4973 | if (prev != idx) | |
4974 | { | |
4975 | match_callback (idx); | |
4976 | prev = idx; | |
4977 | } | |
4978 | } | |
4979 | ||
4980 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4981 | (offset_type)-1 are both possible values. */ | |
4982 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4983 | } | |
4984 | ||
c62446b1 PA |
4985 | #if GDB_SELF_TEST |
4986 | ||
4987 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4988 | ||
a3c5fafd PA |
4989 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4990 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4991 | mapped_index_base interface. Builds an index from the symbol list | |
4992 | passed as parameter to the constructor. */ | |
4993 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4994 | { |
4995 | public: | |
a3c5fafd PA |
4996 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4997 | : m_symbol_table (symbols) | |
c62446b1 PA |
4998 | {} |
4999 | ||
a3c5fafd | 5000 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 5001 | |
a3c5fafd PA |
5002 | /* Return the number of names in the symbol table. */ |
5003 | virtual size_t symbol_name_count () const | |
c62446b1 | 5004 | { |
a3c5fafd | 5005 | return m_symbol_table.size (); |
c62446b1 PA |
5006 | } |
5007 | ||
a3c5fafd PA |
5008 | /* Get the name of the symbol at IDX in the symbol table. */ |
5009 | virtual const char *symbol_name_at (offset_type idx) const | |
5010 | { | |
5011 | return m_symbol_table[idx]; | |
5012 | } | |
c62446b1 | 5013 | |
a3c5fafd PA |
5014 | private: |
5015 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
5016 | }; |
5017 | ||
5018 | /* Convenience function that converts a NULL pointer to a "<null>" | |
5019 | string, to pass to print routines. */ | |
5020 | ||
5021 | static const char * | |
5022 | string_or_null (const char *str) | |
5023 | { | |
5024 | return str != NULL ? str : "<null>"; | |
5025 | } | |
5026 | ||
5027 | /* Check if a lookup_name_info built from | |
5028 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
5029 | index. EXPECTED_LIST is the list of expected matches, in expected | |
5030 | matching order. If no match expected, then an empty list is | |
5031 | specified. Returns true on success. On failure prints a warning | |
5032 | indicating the file:line that failed, and returns false. */ | |
5033 | ||
5034 | static bool | |
5035 | check_match (const char *file, int line, | |
5036 | mock_mapped_index &mock_index, | |
5037 | const char *name, symbol_name_match_type match_type, | |
5038 | bool completion_mode, | |
5039 | std::initializer_list<const char *> expected_list) | |
5040 | { | |
5041 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
5042 | ||
5043 | bool matched = true; | |
5044 | ||
5045 | auto mismatch = [&] (const char *expected_str, | |
5046 | const char *got) | |
5047 | { | |
5048 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
5049 | "expected=\"%s\", got=\"%s\"\n"), | |
5050 | file, line, | |
5051 | (match_type == symbol_name_match_type::FULL | |
5052 | ? "FULL" : "WILD"), | |
5053 | name, string_or_null (expected_str), string_or_null (got)); | |
5054 | matched = false; | |
5055 | }; | |
5056 | ||
5057 | auto expected_it = expected_list.begin (); | |
5058 | auto expected_end = expected_list.end (); | |
5059 | ||
a3c5fafd | 5060 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
5061 | NULL, ALL_DOMAIN, |
5062 | [&] (offset_type idx) | |
5063 | { | |
a3c5fafd | 5064 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
5065 | const char *expected_str |
5066 | = expected_it == expected_end ? NULL : *expected_it++; | |
5067 | ||
5068 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
5069 | mismatch (expected_str, matched_name); | |
5070 | }); | |
5071 | ||
5072 | const char *expected_str | |
5073 | = expected_it == expected_end ? NULL : *expected_it++; | |
5074 | if (expected_str != NULL) | |
5075 | mismatch (expected_str, NULL); | |
5076 | ||
5077 | return matched; | |
5078 | } | |
5079 | ||
5080 | /* The symbols added to the mock mapped_index for testing (in | |
5081 | canonical form). */ | |
5082 | static const char *test_symbols[] = { | |
5083 | "function", | |
5084 | "std::bar", | |
5085 | "std::zfunction", | |
5086 | "std::zfunction2", | |
5087 | "w1::w2", | |
5088 | "ns::foo<char*>", | |
5089 | "ns::foo<int>", | |
5090 | "ns::foo<long>", | |
a20714ff PA |
5091 | "ns2::tmpl<int>::foo2", |
5092 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 5093 | |
e1ef7d7a PA |
5094 | /* These are used to check that the increment-last-char in the |
5095 | matching algorithm for completion doesn't match "t1_fund" when | |
5096 | completing "t1_func". */ | |
5097 | "t1_func", | |
5098 | "t1_func1", | |
5099 | "t1_fund", | |
5100 | "t1_fund1", | |
5101 | ||
5102 | /* A UTF-8 name with multi-byte sequences to make sure that | |
5103 | cp-name-parser understands this as a single identifier ("função" | |
5104 | is "function" in PT). */ | |
5105 | u8"u8função", | |
5106 | ||
5107 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
5108 | "yfunc\377", | |
5109 | ||
5110 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
5111 | "\377", | |
5112 | "\377\377123", | |
5113 | ||
c62446b1 PA |
5114 | /* A name with all sorts of complications. Starts with "z" to make |
5115 | it easier for the completion tests below. */ | |
5116 | #define Z_SYM_NAME \ | |
5117 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
5118 | "::tuple<(anonymous namespace)::ui*, " \ | |
5119 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
5120 | ||
5121 | Z_SYM_NAME | |
5122 | }; | |
5123 | ||
a3c5fafd PA |
5124 | /* Returns true if the mapped_index_base::find_name_component_bounds |
5125 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
5126 | in completion mode. */ | |
5c58de74 PA |
5127 | |
5128 | static bool | |
a3c5fafd | 5129 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
5130 | const char *search_name, |
5131 | gdb::array_view<const char *> expected_syms) | |
5132 | { | |
5133 | lookup_name_info lookup_name (search_name, | |
5134 | symbol_name_match_type::FULL, true); | |
5135 | ||
5136 | auto bounds = index.find_name_components_bounds (lookup_name); | |
5137 | ||
5138 | size_t distance = std::distance (bounds.first, bounds.second); | |
5139 | if (distance != expected_syms.size ()) | |
5140 | return false; | |
5141 | ||
5142 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
5143 | { | |
5144 | auto nc_elem = bounds.first + exp_elem; | |
5145 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
5146 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
5147 | return false; | |
5148 | } | |
5149 | ||
5150 | return true; | |
5151 | } | |
5152 | ||
5153 | /* Test the lower-level mapped_index::find_name_component_bounds | |
5154 | method. */ | |
5155 | ||
c62446b1 | 5156 | static void |
5c58de74 PA |
5157 | test_mapped_index_find_name_component_bounds () |
5158 | { | |
5159 | mock_mapped_index mock_index (test_symbols); | |
5160 | ||
a3c5fafd | 5161 | mock_index.build_name_components (); |
5c58de74 PA |
5162 | |
5163 | /* Test the lower-level mapped_index::find_name_component_bounds | |
5164 | method in completion mode. */ | |
5165 | { | |
5166 | static const char *expected_syms[] = { | |
5167 | "t1_func", | |
5168 | "t1_func1", | |
5c58de74 PA |
5169 | }; |
5170 | ||
a3c5fafd | 5171 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
5172 | "t1_func", expected_syms)); |
5173 | } | |
5174 | ||
5175 | /* Check that the increment-last-char in the name matching algorithm | |
5176 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
5177 | { | |
5178 | static const char *expected_syms1[] = { | |
5179 | "\377", | |
5180 | "\377\377123", | |
5181 | }; | |
a3c5fafd | 5182 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
5183 | "\377", expected_syms1)); |
5184 | ||
5185 | static const char *expected_syms2[] = { | |
5186 | "\377\377123", | |
5187 | }; | |
a3c5fafd | 5188 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
5189 | "\377\377", expected_syms2)); |
5190 | } | |
5191 | } | |
5192 | ||
5193 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
5194 | ||
5195 | static void | |
5196 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
5197 | { |
5198 | mock_mapped_index mock_index (test_symbols); | |
5199 | ||
5200 | /* We let all tests run until the end even if some fails, for debug | |
5201 | convenience. */ | |
5202 | bool any_mismatch = false; | |
5203 | ||
5204 | /* Create the expected symbols list (an initializer_list). Needed | |
5205 | because lists have commas, and we need to pass them to CHECK, | |
5206 | which is a macro. */ | |
5207 | #define EXPECT(...) { __VA_ARGS__ } | |
5208 | ||
5209 | /* Wrapper for check_match that passes down the current | |
5210 | __FILE__/__LINE__. */ | |
5211 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
5212 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
5213 | mock_index, \ | |
5214 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
5215 | EXPECTED_LIST) | |
5216 | ||
5217 | /* Identity checks. */ | |
5218 | for (const char *sym : test_symbols) | |
5219 | { | |
5220 | /* Should be able to match all existing symbols. */ | |
5221 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
5222 | EXPECT (sym)); | |
5223 | ||
5224 | /* Should be able to match all existing symbols with | |
5225 | parameters. */ | |
5226 | std::string with_params = std::string (sym) + "(int)"; | |
5227 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
5228 | EXPECT (sym)); | |
5229 | ||
5230 | /* Should be able to match all existing symbols with | |
5231 | parameters and qualifiers. */ | |
5232 | with_params = std::string (sym) + " ( int ) const"; | |
5233 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
5234 | EXPECT (sym)); | |
5235 | ||
5236 | /* This should really find sym, but cp-name-parser.y doesn't | |
5237 | know about lvalue/rvalue qualifiers yet. */ | |
5238 | with_params = std::string (sym) + " ( int ) &&"; | |
5239 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
5240 | {}); | |
5241 | } | |
5242 | ||
e1ef7d7a PA |
5243 | /* Check that the name matching algorithm for completion doesn't get |
5244 | confused with Latin1 'ÿ' / 0xff. */ | |
5245 | { | |
5246 | static const char str[] = "\377"; | |
5247 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
5248 | EXPECT ("\377", "\377\377123")); | |
5249 | } | |
5250 | ||
5251 | /* Check that the increment-last-char in the matching algorithm for | |
5252 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
5253 | { | |
5254 | static const char str[] = "t1_func"; | |
5255 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
5256 | EXPECT ("t1_func", "t1_func1")); | |
5257 | } | |
5258 | ||
c62446b1 PA |
5259 | /* Check that completion mode works at each prefix of the expected |
5260 | symbol name. */ | |
5261 | { | |
5262 | static const char str[] = "function(int)"; | |
5263 | size_t len = strlen (str); | |
5264 | std::string lookup; | |
5265 | ||
5266 | for (size_t i = 1; i < len; i++) | |
5267 | { | |
5268 | lookup.assign (str, i); | |
5269 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
5270 | EXPECT ("function")); | |
5271 | } | |
5272 | } | |
5273 | ||
5274 | /* While "w" is a prefix of both components, the match function | |
5275 | should still only be called once. */ | |
5276 | { | |
5277 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
5278 | EXPECT ("w1::w2")); | |
a20714ff PA |
5279 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
5280 | EXPECT ("w1::w2")); | |
c62446b1 PA |
5281 | } |
5282 | ||
5283 | /* Same, with a "complicated" symbol. */ | |
5284 | { | |
5285 | static const char str[] = Z_SYM_NAME; | |
5286 | size_t len = strlen (str); | |
5287 | std::string lookup; | |
5288 | ||
5289 | for (size_t i = 1; i < len; i++) | |
5290 | { | |
5291 | lookup.assign (str, i); | |
5292 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
5293 | EXPECT (Z_SYM_NAME)); | |
5294 | } | |
5295 | } | |
5296 | ||
5297 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
5298 | { | |
5299 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
5300 | {}); | |
5301 | } | |
5302 | ||
5303 | /* A complete symbol with parameters matches any overload, since the | |
5304 | index has no overload info. */ | |
5305 | { | |
5306 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
5307 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
5308 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
5309 | EXPECT ("std::zfunction", "std::zfunction2")); | |
5310 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
5311 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
5312 | } |
5313 | ||
5314 | /* Check that whitespace is ignored appropriately. A symbol with a | |
5315 | template argument list. */ | |
5316 | { | |
5317 | static const char expected[] = "ns::foo<int>"; | |
5318 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
5319 | EXPECT (expected)); | |
a20714ff PA |
5320 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
5321 | EXPECT (expected)); | |
c62446b1 PA |
5322 | } |
5323 | ||
5324 | /* Check that whitespace is ignored appropriately. A symbol with a | |
5325 | template argument list that includes a pointer. */ | |
5326 | { | |
5327 | static const char expected[] = "ns::foo<char*>"; | |
5328 | /* Try both completion and non-completion modes. */ | |
5329 | static const bool completion_mode[2] = {false, true}; | |
5330 | for (size_t i = 0; i < 2; i++) | |
5331 | { | |
5332 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
5333 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
5334 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
5335 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
5336 | |
5337 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
5338 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
5339 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
5340 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
5341 | } |
5342 | } | |
5343 | ||
5344 | { | |
5345 | /* Check method qualifiers are ignored. */ | |
5346 | static const char expected[] = "ns::foo<char*>"; | |
5347 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
5348 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
5349 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
5350 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
5351 | CHECK_MATCH ("foo < char * > ( int ) const", |
5352 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
5353 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
5354 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
5355 | } |
5356 | ||
5357 | /* Test lookup names that don't match anything. */ | |
5358 | { | |
a20714ff PA |
5359 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
5360 | {}); | |
5361 | ||
c62446b1 PA |
5362 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
5363 | {}); | |
5364 | } | |
5365 | ||
a20714ff PA |
5366 | /* Some wild matching tests, exercising "(anonymous namespace)", |
5367 | which should not be confused with a parameter list. */ | |
5368 | { | |
5369 | static const char *syms[] = { | |
5370 | "A::B::C", | |
5371 | "B::C", | |
5372 | "C", | |
5373 | "A :: B :: C ( int )", | |
5374 | "B :: C ( int )", | |
5375 | "C ( int )", | |
5376 | }; | |
5377 | ||
5378 | for (const char *s : syms) | |
5379 | { | |
5380 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
5381 | EXPECT ("(anonymous namespace)::A::B::C")); | |
5382 | } | |
5383 | } | |
5384 | ||
5385 | { | |
5386 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
5387 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
5388 | EXPECT (expected)); | |
5389 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
5390 | EXPECT (expected)); | |
5391 | } | |
5392 | ||
c62446b1 PA |
5393 | SELF_CHECK (!any_mismatch); |
5394 | ||
5395 | #undef EXPECT | |
5396 | #undef CHECK_MATCH | |
5397 | } | |
5398 | ||
5c58de74 PA |
5399 | static void |
5400 | run_test () | |
5401 | { | |
5402 | test_mapped_index_find_name_component_bounds (); | |
5403 | test_dw2_expand_symtabs_matching_symbol (); | |
5404 | } | |
5405 | ||
c62446b1 PA |
5406 | }} // namespace selftests::dw2_expand_symtabs_matching |
5407 | ||
5408 | #endif /* GDB_SELF_TEST */ | |
5409 | ||
4b514bc8 JK |
5410 | /* If FILE_MATCHER is NULL or if PER_CU has |
5411 | dwarf2_per_cu_quick_data::MARK set (see | |
5412 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
5413 | EXPANSION_NOTIFY on it. */ | |
5414 | ||
5415 | static void | |
5416 | dw2_expand_symtabs_matching_one | |
5417 | (struct dwarf2_per_cu_data *per_cu, | |
5418 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5419 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
5420 | { | |
5421 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
5422 | { | |
5423 | bool symtab_was_null | |
5424 | = (per_cu->v.quick->compunit_symtab == NULL); | |
5425 | ||
5426 | dw2_instantiate_symtab (per_cu); | |
5427 | ||
5428 | if (expansion_notify != NULL | |
5429 | && symtab_was_null | |
5430 | && per_cu->v.quick->compunit_symtab != NULL) | |
5431 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
5432 | } | |
5433 | } | |
5434 | ||
3f563c84 PA |
5435 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
5436 | matched, to expand corresponding CUs that were marked. IDX is the | |
5437 | index of the symbol name that matched. */ | |
5438 | ||
5439 | static void | |
5440 | dw2_expand_marked_cus | |
ed2dc618 | 5441 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
5442 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
5443 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5444 | search_domain kind) | |
5445 | { | |
3f563c84 PA |
5446 | offset_type *vec, vec_len, vec_idx; |
5447 | bool global_seen = false; | |
ed2dc618 | 5448 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 5449 | |
61920122 | 5450 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 5451 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
5452 | vec_len = MAYBE_SWAP (vec[0]); |
5453 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
5454 | { | |
5455 | struct dwarf2_per_cu_data *per_cu; | |
5456 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); | |
5457 | /* This value is only valid for index versions >= 7. */ | |
5458 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
5459 | gdb_index_symbol_kind symbol_kind = | |
5460 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
5461 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
5462 | /* Only check the symbol attributes if they're present. | |
5463 | Indices prior to version 7 don't record them, | |
5464 | and indices >= 7 may elide them for certain symbols | |
5465 | (gold does this). */ | |
5466 | int attrs_valid = | |
5467 | (index.version >= 7 | |
5468 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
5469 | ||
5470 | /* Work around gold/15646. */ | |
5471 | if (attrs_valid) | |
9291a0cd | 5472 | { |
61920122 PA |
5473 | if (!is_static && global_seen) |
5474 | continue; | |
5475 | if (!is_static) | |
5476 | global_seen = true; | |
5477 | } | |
3190f0c6 | 5478 | |
61920122 PA |
5479 | /* Only check the symbol's kind if it has one. */ |
5480 | if (attrs_valid) | |
5481 | { | |
5482 | switch (kind) | |
8943b874 | 5483 | { |
61920122 PA |
5484 | case VARIABLES_DOMAIN: |
5485 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
5486 | continue; | |
5487 | break; | |
5488 | case FUNCTIONS_DOMAIN: | |
5489 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 5490 | continue; |
61920122 PA |
5491 | break; |
5492 | case TYPES_DOMAIN: | |
5493 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
5494 | continue; | |
5495 | break; | |
5496 | default: | |
5497 | break; | |
8943b874 | 5498 | } |
61920122 | 5499 | } |
8943b874 | 5500 | |
61920122 PA |
5501 | /* Don't crash on bad data. */ |
5502 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
5503 | + dwarf2_per_objfile->n_type_units)) | |
5504 | { | |
5505 | complaint (&symfile_complaints, | |
5506 | _(".gdb_index entry has bad CU index" | |
ed2dc618 SM |
5507 | " [in module %s]"), |
5508 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
5509 | continue; |
5510 | } | |
5511 | ||
ed2dc618 | 5512 | per_cu = dw2_get_cutu (dwarf2_per_objfile, cu_index); |
4b514bc8 JK |
5513 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
5514 | expansion_notify); | |
61920122 PA |
5515 | } |
5516 | } | |
5517 | ||
4b514bc8 JK |
5518 | /* If FILE_MATCHER is non-NULL, set all the |
5519 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
5520 | that match FILE_MATCHER. */ | |
5521 | ||
61920122 | 5522 | static void |
4b514bc8 | 5523 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
5524 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5525 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 5526 | { |
4b514bc8 | 5527 | if (file_matcher == NULL) |
61920122 PA |
5528 | return; |
5529 | ||
4b514bc8 JK |
5530 | objfile *const objfile = dwarf2_per_objfile->objfile; |
5531 | ||
5532 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
5533 | htab_eq_pointer, | |
5534 | NULL, xcalloc, xfree)); | |
5535 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
5536 | htab_eq_pointer, |
5537 | NULL, xcalloc, xfree)); | |
61920122 | 5538 | |
4b514bc8 JK |
5539 | /* The rule is CUs specify all the files, including those used by |
5540 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 5541 | |
927aa2e7 JK |
5542 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
5543 | { | |
5544 | int j; | |
ed2dc618 | 5545 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (dwarf2_per_objfile, i); |
927aa2e7 JK |
5546 | struct quick_file_names *file_data; |
5547 | void **slot; | |
5548 | ||
5549 | QUIT; | |
5550 | ||
5551 | per_cu->v.quick->mark = 0; | |
5552 | ||
5553 | /* We only need to look at symtabs not already expanded. */ | |
5554 | if (per_cu->v.quick->compunit_symtab) | |
5555 | continue; | |
5556 | ||
5557 | file_data = dw2_get_file_names (per_cu); | |
5558 | if (file_data == NULL) | |
5559 | continue; | |
5560 | ||
5561 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
5562 | continue; | |
5563 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
5564 | { | |
5565 | per_cu->v.quick->mark = 1; | |
5566 | continue; | |
5567 | } | |
5568 | ||
5569 | for (j = 0; j < file_data->num_file_names; ++j) | |
5570 | { | |
5571 | const char *this_real_name; | |
5572 | ||
5573 | if (file_matcher (file_data->file_names[j], false)) | |
5574 | { | |
5575 | per_cu->v.quick->mark = 1; | |
5576 | break; | |
5577 | } | |
5578 | ||
5579 | /* Before we invoke realpath, which can get expensive when many | |
5580 | files are involved, do a quick comparison of the basenames. */ | |
5581 | if (!basenames_may_differ | |
5582 | && !file_matcher (lbasename (file_data->file_names[j]), | |
5583 | true)) | |
5584 | continue; | |
5585 | ||
5586 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
5587 | if (file_matcher (this_real_name, false)) | |
5588 | { | |
5589 | per_cu->v.quick->mark = 1; | |
5590 | break; | |
5591 | } | |
5592 | } | |
5593 | ||
5594 | slot = htab_find_slot (per_cu->v.quick->mark | |
5595 | ? visited_found.get () | |
5596 | : visited_not_found.get (), | |
5597 | file_data, INSERT); | |
5598 | *slot = file_data; | |
5599 | } | |
5600 | } | |
5601 | ||
5602 | static void | |
5603 | dw2_expand_symtabs_matching | |
5604 | (struct objfile *objfile, | |
5605 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5606 | const lookup_name_info &lookup_name, | |
5607 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5608 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5609 | enum search_domain kind) | |
5610 | { | |
ed2dc618 SM |
5611 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5612 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5613 | |
5614 | /* index_table is NULL if OBJF_READNOW. */ | |
5615 | if (!dwarf2_per_objfile->index_table) | |
5616 | return; | |
5617 | ||
ed2dc618 | 5618 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 JK |
5619 | |
5620 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
5621 | ||
5622 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
5623 | symbol_matcher, | |
5624 | kind, [&] (offset_type idx) | |
5625 | { | |
ed2dc618 | 5626 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 JK |
5627 | expansion_notify, kind); |
5628 | }); | |
5629 | } | |
5630 | ||
5631 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
5632 | symtab. */ | |
5633 | ||
5634 | static struct compunit_symtab * | |
5635 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
5636 | CORE_ADDR pc) | |
5637 | { | |
5638 | int i; | |
5639 | ||
5640 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
5641 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
5642 | return cust; | |
5643 | ||
5644 | if (cust->includes == NULL) | |
5645 | return NULL; | |
5646 | ||
5647 | for (i = 0; cust->includes[i]; ++i) | |
5648 | { | |
5649 | struct compunit_symtab *s = cust->includes[i]; | |
5650 | ||
5651 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
5652 | if (s != NULL) | |
5653 | return s; | |
5654 | } | |
5655 | ||
5656 | return NULL; | |
5657 | } | |
5658 | ||
5659 | static struct compunit_symtab * | |
5660 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
5661 | struct bound_minimal_symbol msymbol, | |
5662 | CORE_ADDR pc, | |
5663 | struct obj_section *section, | |
5664 | int warn_if_readin) | |
5665 | { | |
5666 | struct dwarf2_per_cu_data *data; | |
5667 | struct compunit_symtab *result; | |
5668 | ||
927aa2e7 JK |
5669 | if (!objfile->psymtabs_addrmap) |
5670 | return NULL; | |
5671 | ||
5672 | data = (struct dwarf2_per_cu_data *) addrmap_find (objfile->psymtabs_addrmap, | |
5673 | pc); | |
5674 | if (!data) | |
5675 | return NULL; | |
5676 | ||
5677 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
5678 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
5679 | paddress (get_objfile_arch (objfile), pc)); | |
5680 | ||
5681 | result | |
5682 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data), | |
5683 | pc); | |
5684 | gdb_assert (result != NULL); | |
5685 | return result; | |
5686 | } | |
5687 | ||
5688 | static void | |
5689 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
5690 | void *data, int need_fullname) | |
5691 | { | |
ed2dc618 SM |
5692 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5693 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5694 | |
5695 | if (!dwarf2_per_objfile->filenames_cache) | |
5696 | { | |
5697 | dwarf2_per_objfile->filenames_cache.emplace (); | |
5698 | ||
5699 | htab_up visited (htab_create_alloc (10, | |
5700 | htab_hash_pointer, htab_eq_pointer, | |
5701 | NULL, xcalloc, xfree)); | |
5702 | ||
5703 | /* The rule is CUs specify all the files, including those used | |
5704 | by any TU, so there's no need to scan TUs here. We can | |
5705 | ignore file names coming from already-expanded CUs. */ | |
5706 | ||
5707 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
5708 | { | |
ed2dc618 | 5709 | dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
927aa2e7 JK |
5710 | |
5711 | if (per_cu->v.quick->compunit_symtab) | |
5712 | { | |
5713 | void **slot = htab_find_slot (visited.get (), | |
5714 | per_cu->v.quick->file_names, | |
5715 | INSERT); | |
5716 | ||
5717 | *slot = per_cu->v.quick->file_names; | |
5718 | } | |
5719 | } | |
5720 | ||
5721 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
5722 | { | |
ed2dc618 | 5723 | dwarf2_per_cu_data *per_cu = dw2_get_cu (dwarf2_per_objfile, i); |
927aa2e7 JK |
5724 | struct quick_file_names *file_data; |
5725 | void **slot; | |
5726 | ||
5727 | /* We only need to look at symtabs not already expanded. */ | |
5728 | if (per_cu->v.quick->compunit_symtab) | |
5729 | continue; | |
5730 | ||
5731 | file_data = dw2_get_file_names (per_cu); | |
5732 | if (file_data == NULL) | |
5733 | continue; | |
5734 | ||
5735 | slot = htab_find_slot (visited.get (), file_data, INSERT); | |
5736 | if (*slot) | |
5737 | { | |
5738 | /* Already visited. */ | |
5739 | continue; | |
5740 | } | |
5741 | *slot = file_data; | |
5742 | ||
5743 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5744 | { | |
5745 | const char *filename = file_data->file_names[j]; | |
5746 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
5747 | } | |
5748 | } | |
5749 | } | |
5750 | ||
5751 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
5752 | { | |
5753 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5754 | ||
5755 | if (need_fullname) | |
5756 | this_real_name = gdb_realpath (filename); | |
5757 | (*fun) (filename, this_real_name.get (), data); | |
5758 | }); | |
5759 | } | |
5760 | ||
5761 | static int | |
5762 | dw2_has_symbols (struct objfile *objfile) | |
5763 | { | |
5764 | return 1; | |
5765 | } | |
5766 | ||
5767 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5768 | { | |
5769 | dw2_has_symbols, | |
5770 | dw2_find_last_source_symtab, | |
5771 | dw2_forget_cached_source_info, | |
5772 | dw2_map_symtabs_matching_filename, | |
5773 | dw2_lookup_symbol, | |
5774 | dw2_print_stats, | |
5775 | dw2_dump, | |
5776 | dw2_relocate, | |
5777 | dw2_expand_symtabs_for_function, | |
5778 | dw2_expand_all_symtabs, | |
5779 | dw2_expand_symtabs_with_fullname, | |
5780 | dw2_map_matching_symbols, | |
5781 | dw2_expand_symtabs_matching, | |
5782 | dw2_find_pc_sect_compunit_symtab, | |
5783 | NULL, | |
5784 | dw2_map_symbol_filenames | |
5785 | }; | |
5786 | ||
5787 | /* DWARF-5 debug_names reader. */ | |
5788 | ||
5789 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5790 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5791 | ||
5792 | /* A helper function that reads the .debug_names section in SECTION | |
5793 | and fills in MAP. FILENAME is the name of the file containing the | |
5794 | section; it is used for error reporting. | |
5795 | ||
5796 | Returns true if all went well, false otherwise. */ | |
5797 | ||
5798 | static bool | |
5799 | read_debug_names_from_section (struct objfile *objfile, | |
5800 | const char *filename, | |
5801 | struct dwarf2_section_info *section, | |
5802 | mapped_debug_names &map) | |
5803 | { | |
5804 | if (dwarf2_section_empty_p (section)) | |
5805 | return false; | |
5806 | ||
5807 | /* Older elfutils strip versions could keep the section in the main | |
5808 | executable while splitting it for the separate debug info file. */ | |
5809 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
5810 | return false; | |
5811 | ||
5812 | dwarf2_read_section (objfile, section); | |
5813 | ||
5814 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
5815 | ||
5816 | const gdb_byte *addr = section->buffer; | |
5817 | ||
5818 | bfd *const abfd = get_section_bfd_owner (section); | |
5819 | ||
5820 | unsigned int bytes_read; | |
5821 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5822 | addr += bytes_read; | |
5823 | ||
5824 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5825 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5826 | if (bytes_read + length != section->size) | |
5827 | { | |
5828 | /* There may be multiple per-CU indices. */ | |
5829 | warning (_("Section .debug_names in %s length %s does not match " | |
5830 | "section length %s, ignoring .debug_names."), | |
5831 | filename, plongest (bytes_read + length), | |
5832 | pulongest (section->size)); | |
5833 | return false; | |
5834 | } | |
5835 | ||
5836 | /* The version number. */ | |
5837 | uint16_t version = read_2_bytes (abfd, addr); | |
5838 | addr += 2; | |
5839 | if (version != 5) | |
5840 | { | |
5841 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5842 | "ignoring .debug_names."), | |
5843 | filename, version); | |
5844 | return false; | |
5845 | } | |
5846 | ||
5847 | /* Padding. */ | |
5848 | uint16_t padding = read_2_bytes (abfd, addr); | |
5849 | addr += 2; | |
5850 | if (padding != 0) | |
5851 | { | |
5852 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5853 | "ignoring .debug_names."), | |
5854 | filename, padding); | |
5855 | return false; | |
5856 | } | |
5857 | ||
5858 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5859 | map.cu_count = read_4_bytes (abfd, addr); | |
5860 | addr += 4; | |
5861 | ||
5862 | /* local_type_unit_count - The number of TUs in the local TU | |
5863 | list. */ | |
5864 | map.tu_count = read_4_bytes (abfd, addr); | |
5865 | addr += 4; | |
5866 | ||
5867 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5868 | list. */ | |
5869 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5870 | addr += 4; | |
5871 | if (foreign_tu_count != 0) | |
5872 | { | |
5873 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5874 | "ignoring .debug_names."), | |
5875 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5876 | return false; | |
5877 | } | |
5878 | ||
5879 | /* bucket_count - The number of hash buckets in the hash lookup | |
5880 | table. */ | |
5881 | map.bucket_count = read_4_bytes (abfd, addr); | |
5882 | addr += 4; | |
5883 | ||
5884 | /* name_count - The number of unique names in the index. */ | |
5885 | map.name_count = read_4_bytes (abfd, addr); | |
5886 | addr += 4; | |
5887 | ||
5888 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5889 | table. */ | |
5890 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5891 | addr += 4; | |
5892 | ||
5893 | /* augmentation_string_size - The size in bytes of the augmentation | |
5894 | string. This value is rounded up to a multiple of 4. */ | |
5895 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5896 | addr += 4; | |
5897 | map.augmentation_is_gdb = ((augmentation_string_size | |
5898 | == sizeof (dwarf5_augmentation)) | |
5899 | && memcmp (addr, dwarf5_augmentation, | |
5900 | sizeof (dwarf5_augmentation)) == 0); | |
5901 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5902 | addr += augmentation_string_size; | |
5903 | ||
5904 | /* List of CUs */ | |
5905 | map.cu_table_reordered = addr; | |
5906 | addr += map.cu_count * map.offset_size; | |
5907 | ||
5908 | /* List of Local TUs */ | |
5909 | map.tu_table_reordered = addr; | |
5910 | addr += map.tu_count * map.offset_size; | |
5911 | ||
5912 | /* Hash Lookup Table */ | |
5913 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5914 | addr += map.bucket_count * 4; | |
5915 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5916 | addr += map.name_count * 4; | |
5917 | ||
5918 | /* Name Table */ | |
5919 | map.name_table_string_offs_reordered = addr; | |
5920 | addr += map.name_count * map.offset_size; | |
5921 | map.name_table_entry_offs_reordered = addr; | |
5922 | addr += map.name_count * map.offset_size; | |
5923 | ||
5924 | const gdb_byte *abbrev_table_start = addr; | |
5925 | for (;;) | |
5926 | { | |
5927 | unsigned int bytes_read; | |
5928 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5929 | addr += bytes_read; | |
5930 | if (index_num == 0) | |
5931 | break; | |
5932 | ||
5933 | const auto insertpair | |
5934 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5935 | if (!insertpair.second) | |
5936 | { | |
5937 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5938 | "ignoring .debug_names."), | |
5939 | filename, pulongest (index_num)); | |
5940 | return false; | |
5941 | } | |
5942 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5943 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5944 | addr += bytes_read; | |
5945 | ||
5946 | for (;;) | |
5947 | { | |
5948 | mapped_debug_names::index_val::attr attr; | |
5949 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5950 | addr += bytes_read; | |
5951 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5952 | addr += bytes_read; | |
5953 | if (attr.form == DW_FORM_implicit_const) | |
5954 | { | |
5955 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5956 | &bytes_read); | |
5957 | addr += bytes_read; | |
5958 | } | |
5959 | if (attr.dw_idx == 0 && attr.form == 0) | |
5960 | break; | |
5961 | indexval.attr_vec.push_back (std::move (attr)); | |
5962 | } | |
5963 | } | |
5964 | if (addr != abbrev_table_start + abbrev_table_size) | |
5965 | { | |
5966 | warning (_("Section .debug_names in %s has abbreviation_table " | |
5967 | "of size %zu vs. written as %u, ignoring .debug_names."), | |
5968 | filename, addr - abbrev_table_start, abbrev_table_size); | |
5969 | return false; | |
5970 | } | |
5971 | map.entry_pool = addr; | |
5972 | ||
5973 | return true; | |
5974 | } | |
5975 | ||
5976 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5977 | list. */ | |
5978 | ||
5979 | static void | |
ed2dc618 | 5980 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5981 | const mapped_debug_names &map, |
5982 | dwarf2_section_info §ion, | |
5983 | bool is_dwz, int base_offset) | |
5984 | { | |
5985 | sect_offset sect_off_prev; | |
5986 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5987 | { | |
5988 | sect_offset sect_off_next; | |
5989 | if (i < map.cu_count) | |
5990 | { | |
5991 | sect_off_next | |
5992 | = (sect_offset) (extract_unsigned_integer | |
5993 | (map.cu_table_reordered + i * map.offset_size, | |
5994 | map.offset_size, | |
5995 | map.dwarf5_byte_order)); | |
5996 | } | |
5997 | else | |
5998 | sect_off_next = (sect_offset) section.size; | |
5999 | if (i >= 1) | |
6000 | { | |
6001 | const ULONGEST length = sect_off_next - sect_off_prev; | |
6002 | dwarf2_per_objfile->all_comp_units[base_offset + (i - 1)] | |
ed2dc618 | 6003 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 JK |
6004 | sect_off_prev, length); |
6005 | } | |
6006 | sect_off_prev = sect_off_next; | |
6007 | } | |
6008 | } | |
6009 | ||
6010 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 6011 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
6012 | |
6013 | static void | |
ed2dc618 | 6014 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
6015 | const mapped_debug_names &map, |
6016 | const mapped_debug_names &dwz_map) | |
6017 | { | |
ed2dc618 | 6018 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
6019 | |
6020 | dwarf2_per_objfile->n_comp_units = map.cu_count + dwz_map.cu_count; | |
6021 | dwarf2_per_objfile->all_comp_units | |
6022 | = XOBNEWVEC (&objfile->objfile_obstack, struct dwarf2_per_cu_data *, | |
6023 | dwarf2_per_objfile->n_comp_units); | |
6024 | ||
ed2dc618 SM |
6025 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
6026 | dwarf2_per_objfile->info, | |
927aa2e7 JK |
6027 | false /* is_dwz */, |
6028 | 0 /* base_offset */); | |
6029 | ||
6030 | if (dwz_map.cu_count == 0) | |
6031 | return; | |
6032 | ||
ed2dc618 SM |
6033 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
6034 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
927aa2e7 JK |
6035 | true /* is_dwz */, |
6036 | map.cu_count /* base_offset */); | |
6037 | } | |
6038 | ||
6039 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
6040 | elements of all the CUs and return true. Otherwise, return false. */ | |
6041 | ||
6042 | static bool | |
ed2dc618 | 6043 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 6044 | { |
ed2dc618 SM |
6045 | mapped_debug_names local_map (dwarf2_per_objfile); |
6046 | mapped_debug_names dwz_map (dwarf2_per_objfile); | |
6047 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
6048 | |
6049 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
6050 | &dwarf2_per_objfile->debug_names, | |
6051 | local_map)) | |
6052 | return false; | |
6053 | ||
6054 | /* Don't use the index if it's empty. */ | |
6055 | if (local_map.name_count == 0) | |
6056 | return false; | |
6057 | ||
6058 | /* If there is a .dwz file, read it so we can get its CU list as | |
6059 | well. */ | |
ed2dc618 | 6060 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
6061 | if (dwz != NULL) |
6062 | { | |
6063 | if (!read_debug_names_from_section (objfile, | |
6064 | bfd_get_filename (dwz->dwz_bfd), | |
6065 | &dwz->debug_names, dwz_map)) | |
6066 | { | |
6067 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
6068 | bfd_get_filename (dwz->dwz_bfd)); | |
6069 | return false; | |
6070 | } | |
6071 | } | |
6072 | ||
ed2dc618 | 6073 | create_cus_from_debug_names (dwarf2_per_objfile, local_map, dwz_map); |
927aa2e7 JK |
6074 | |
6075 | if (local_map.tu_count != 0) | |
6076 | { | |
6077 | /* We can only handle a single .debug_types when we have an | |
6078 | index. */ | |
6079 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
6080 | return false; | |
6081 | ||
6082 | dwarf2_section_info *section = VEC_index (dwarf2_section_info_def, | |
6083 | dwarf2_per_objfile->types, 0); | |
6084 | ||
6085 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 6086 | (dwarf2_per_objfile, local_map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
6087 | } |
6088 | ||
ed2dc618 SM |
6089 | create_addrmap_from_aranges (dwarf2_per_objfile, |
6090 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 6091 | |
ed2dc618 SM |
6092 | dwarf2_per_objfile->debug_names_table.reset |
6093 | (new mapped_debug_names (dwarf2_per_objfile)); | |
927aa2e7 JK |
6094 | *dwarf2_per_objfile->debug_names_table = std::move (local_map); |
6095 | dwarf2_per_objfile->using_index = 1; | |
6096 | dwarf2_per_objfile->quick_file_names_table = | |
6097 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
6098 | ||
6099 | return true; | |
6100 | } | |
6101 | ||
6102 | /* Symbol name hashing function as specified by DWARF-5. */ | |
6103 | ||
6104 | static uint32_t | |
6105 | dwarf5_djb_hash (const char *str_) | |
6106 | { | |
6107 | const unsigned char *str = (const unsigned char *) str_; | |
6108 | ||
6109 | /* Note: tolower here ignores UTF-8, which isn't fully compliant. | |
6110 | See http://dwarfstd.org/ShowIssue.php?issue=161027.1. */ | |
6111 | ||
6112 | uint32_t hash = 5381; | |
6113 | while (int c = *str++) | |
6114 | hash = hash * 33 + tolower (c); | |
6115 | return hash; | |
6116 | } | |
6117 | ||
6118 | /* Type used to manage iterating over all CUs looking for a symbol for | |
6119 | .debug_names. */ | |
6120 | ||
6121 | class dw2_debug_names_iterator | |
6122 | { | |
6123 | public: | |
6124 | /* If WANT_SPECIFIC_BLOCK is true, only look for symbols in block | |
6125 | BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
6126 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
6127 | bool want_specific_block, | |
6128 | block_enum block_index, domain_enum domain, | |
6129 | const char *name) | |
6130 | : m_map (map), m_want_specific_block (want_specific_block), | |
6131 | m_block_index (block_index), m_domain (domain), | |
6132 | m_addr (find_vec_in_debug_names (map, name)) | |
6133 | {} | |
6134 | ||
6135 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
6136 | search_domain search, uint32_t namei) | |
6137 | : m_map (map), | |
6138 | m_search (search), | |
6139 | m_addr (find_vec_in_debug_names (map, namei)) | |
6140 | {} | |
6141 | ||
6142 | /* Return the next matching CU or NULL if there are no more. */ | |
6143 | dwarf2_per_cu_data *next (); | |
6144 | ||
6145 | private: | |
6146 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
6147 | const char *name); | |
6148 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
6149 | uint32_t namei); | |
6150 | ||
6151 | /* The internalized form of .debug_names. */ | |
6152 | const mapped_debug_names &m_map; | |
6153 | ||
6154 | /* If true, only look for symbols that match BLOCK_INDEX. */ | |
6155 | const bool m_want_specific_block = false; | |
6156 | ||
6157 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
6158 | Unused if !WANT_SPECIFIC_BLOCK - FIRST_LOCAL_BLOCK is an invalid | |
6159 | value. */ | |
6160 | const block_enum m_block_index = FIRST_LOCAL_BLOCK; | |
6161 | ||
6162 | /* The kind of symbol we're looking for. */ | |
6163 | const domain_enum m_domain = UNDEF_DOMAIN; | |
6164 | const search_domain m_search = ALL_DOMAIN; | |
6165 | ||
6166 | /* The list of CUs from the index entry of the symbol, or NULL if | |
6167 | not found. */ | |
6168 | const gdb_byte *m_addr; | |
6169 | }; | |
6170 | ||
6171 | const char * | |
6172 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
6173 | { | |
6174 | const ULONGEST namei_string_offs | |
6175 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
6176 | + namei * offset_size), | |
6177 | offset_size, | |
6178 | dwarf5_byte_order); | |
6179 | return read_indirect_string_at_offset | |
ed2dc618 | 6180 | (dwarf2_per_objfile, dwarf2_per_objfile->objfile->obfd, namei_string_offs); |
927aa2e7 JK |
6181 | } |
6182 | ||
6183 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
6184 | found, return pointer to its pool data. If NAME cannot be found, | |
6185 | return NULL. */ | |
6186 | ||
6187 | const gdb_byte * | |
6188 | dw2_debug_names_iterator::find_vec_in_debug_names | |
6189 | (const mapped_debug_names &map, const char *name) | |
6190 | { | |
6191 | int (*cmp) (const char *, const char *); | |
6192 | ||
6193 | if (current_language->la_language == language_cplus | |
6194 | || current_language->la_language == language_fortran | |
6195 | || current_language->la_language == language_d) | |
6196 | { | |
6197 | /* NAME is already canonical. Drop any qualifiers as | |
6198 | .debug_names does not contain any. */ | |
6199 | ||
6200 | if (strchr (name, '(') != NULL) | |
6201 | { | |
6202 | gdb::unique_xmalloc_ptr<char> without_params | |
6203 | = cp_remove_params (name); | |
6204 | ||
6205 | if (without_params != NULL) | |
6206 | { | |
6207 | name = without_params.get(); | |
6208 | } | |
6209 | } | |
6210 | } | |
6211 | ||
6212 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
6213 | ||
6214 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
6215 | uint32_t namei | |
6216 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
6217 | (map.bucket_table_reordered | |
6218 | + (full_hash % map.bucket_count)), 4, | |
6219 | map.dwarf5_byte_order); | |
6220 | if (namei == 0) | |
6221 | return NULL; | |
6222 | --namei; | |
6223 | if (namei >= map.name_count) | |
6224 | { | |
6225 | complaint (&symfile_complaints, | |
6226 | _("Wrong .debug_names with name index %u but name_count=%u " | |
6227 | "[in module %s]"), | |
6228 | namei, map.name_count, | |
ed2dc618 | 6229 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
6230 | return NULL; |
6231 | } | |
6232 | ||
6233 | for (;;) | |
6234 | { | |
6235 | const uint32_t namei_full_hash | |
6236 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
6237 | (map.hash_table_reordered + namei), 4, | |
6238 | map.dwarf5_byte_order); | |
6239 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
6240 | return NULL; | |
6241 | ||
6242 | if (full_hash == namei_full_hash) | |
6243 | { | |
6244 | const char *const namei_string = map.namei_to_name (namei); | |
6245 | ||
6246 | #if 0 /* An expensive sanity check. */ | |
6247 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
6248 | { | |
6249 | complaint (&symfile_complaints, | |
6250 | _("Wrong .debug_names hash for string at index %u " | |
6251 | "[in module %s]"), | |
6252 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
6253 | return NULL; | |
6254 | } | |
6255 | #endif | |
6256 | ||
6257 | if (cmp (namei_string, name) == 0) | |
6258 | { | |
6259 | const ULONGEST namei_entry_offs | |
6260 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
6261 | + namei * map.offset_size), | |
6262 | map.offset_size, map.dwarf5_byte_order); | |
6263 | return map.entry_pool + namei_entry_offs; | |
6264 | } | |
6265 | } | |
6266 | ||
6267 | ++namei; | |
6268 | if (namei >= map.name_count) | |
6269 | return NULL; | |
6270 | } | |
6271 | } | |
6272 | ||
6273 | const gdb_byte * | |
6274 | dw2_debug_names_iterator::find_vec_in_debug_names | |
6275 | (const mapped_debug_names &map, uint32_t namei) | |
6276 | { | |
6277 | if (namei >= map.name_count) | |
6278 | { | |
6279 | complaint (&symfile_complaints, | |
6280 | _("Wrong .debug_names with name index %u but name_count=%u " | |
6281 | "[in module %s]"), | |
6282 | namei, map.name_count, | |
ed2dc618 | 6283 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
6284 | return NULL; |
6285 | } | |
6286 | ||
6287 | const ULONGEST namei_entry_offs | |
6288 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
6289 | + namei * map.offset_size), | |
6290 | map.offset_size, map.dwarf5_byte_order); | |
6291 | return map.entry_pool + namei_entry_offs; | |
6292 | } | |
6293 | ||
6294 | /* See dw2_debug_names_iterator. */ | |
6295 | ||
6296 | dwarf2_per_cu_data * | |
6297 | dw2_debug_names_iterator::next () | |
6298 | { | |
6299 | if (m_addr == NULL) | |
6300 | return NULL; | |
6301 | ||
ed2dc618 SM |
6302 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
6303 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6304 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
6305 | |
6306 | again: | |
6307 | ||
6308 | unsigned int bytes_read; | |
6309 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
6310 | m_addr += bytes_read; | |
6311 | if (abbrev == 0) | |
6312 | return NULL; | |
6313 | ||
6314 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
6315 | if (indexval_it == m_map.abbrev_map.cend ()) | |
6316 | { | |
6317 | complaint (&symfile_complaints, | |
6318 | _("Wrong .debug_names undefined abbrev code %s " | |
6319 | "[in module %s]"), | |
ed2dc618 | 6320 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
6321 | return NULL; |
6322 | } | |
6323 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
6324 | bool have_is_static = false; | |
6325 | bool is_static; | |
6326 | dwarf2_per_cu_data *per_cu = NULL; | |
6327 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
6328 | { | |
6329 | ULONGEST ull; | |
6330 | switch (attr.form) | |
6331 | { | |
6332 | case DW_FORM_implicit_const: | |
6333 | ull = attr.implicit_const; | |
6334 | break; | |
6335 | case DW_FORM_flag_present: | |
6336 | ull = 1; | |
6337 | break; | |
6338 | case DW_FORM_udata: | |
6339 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
6340 | m_addr += bytes_read; | |
6341 | break; | |
6342 | default: | |
6343 | complaint (&symfile_complaints, | |
6344 | _("Unsupported .debug_names form %s [in module %s]"), | |
6345 | dwarf_form_name (attr.form), | |
ed2dc618 | 6346 | objfile_name (objfile)); |
927aa2e7 JK |
6347 | return NULL; |
6348 | } | |
6349 | switch (attr.dw_idx) | |
6350 | { | |
6351 | case DW_IDX_compile_unit: | |
6352 | /* Don't crash on bad data. */ | |
8af5c486 | 6353 | if (ull >= dwarf2_per_objfile->n_comp_units) |
927aa2e7 JK |
6354 | { |
6355 | complaint (&symfile_complaints, | |
6356 | _(".debug_names entry has bad CU index %s" | |
6357 | " [in module %s]"), | |
6358 | pulongest (ull), | |
6359 | objfile_name (dwarf2_per_objfile->objfile)); | |
6360 | continue; | |
6361 | } | |
ed2dc618 | 6362 | per_cu = dw2_get_cutu (dwarf2_per_objfile, ull); |
927aa2e7 | 6363 | break; |
8af5c486 JK |
6364 | case DW_IDX_type_unit: |
6365 | /* Don't crash on bad data. */ | |
6366 | if (ull >= dwarf2_per_objfile->n_type_units) | |
6367 | { | |
6368 | complaint (&symfile_complaints, | |
6369 | _(".debug_names entry has bad TU index %s" | |
6370 | " [in module %s]"), | |
6371 | pulongest (ull), | |
6372 | objfile_name (dwarf2_per_objfile->objfile)); | |
6373 | continue; | |
6374 | } | |
ed2dc618 SM |
6375 | per_cu = dw2_get_cutu (dwarf2_per_objfile, |
6376 | dwarf2_per_objfile->n_comp_units + ull); | |
8af5c486 | 6377 | break; |
927aa2e7 JK |
6378 | case DW_IDX_GNU_internal: |
6379 | if (!m_map.augmentation_is_gdb) | |
6380 | break; | |
6381 | have_is_static = true; | |
6382 | is_static = true; | |
6383 | break; | |
6384 | case DW_IDX_GNU_external: | |
6385 | if (!m_map.augmentation_is_gdb) | |
6386 | break; | |
6387 | have_is_static = true; | |
6388 | is_static = false; | |
6389 | break; | |
6390 | } | |
6391 | } | |
6392 | ||
6393 | /* Skip if already read in. */ | |
6394 | if (per_cu->v.quick->compunit_symtab) | |
6395 | goto again; | |
6396 | ||
6397 | /* Check static vs global. */ | |
6398 | if (have_is_static) | |
6399 | { | |
6400 | const bool want_static = m_block_index != GLOBAL_BLOCK; | |
6401 | if (m_want_specific_block && want_static != is_static) | |
6402 | goto again; | |
6403 | } | |
6404 | ||
6405 | /* Match dw2_symtab_iter_next, symbol_kind | |
6406 | and debug_names::psymbol_tag. */ | |
6407 | switch (m_domain) | |
6408 | { | |
6409 | case VAR_DOMAIN: | |
6410 | switch (indexval.dwarf_tag) | |
6411 | { | |
6412 | case DW_TAG_variable: | |
6413 | case DW_TAG_subprogram: | |
6414 | /* Some types are also in VAR_DOMAIN. */ | |
6415 | case DW_TAG_typedef: | |
6416 | case DW_TAG_structure_type: | |
6417 | break; | |
6418 | default: | |
6419 | goto again; | |
6420 | } | |
6421 | break; | |
6422 | case STRUCT_DOMAIN: | |
6423 | switch (indexval.dwarf_tag) | |
6424 | { | |
6425 | case DW_TAG_typedef: | |
6426 | case DW_TAG_structure_type: | |
6427 | break; | |
6428 | default: | |
6429 | goto again; | |
6430 | } | |
6431 | break; | |
6432 | case LABEL_DOMAIN: | |
6433 | switch (indexval.dwarf_tag) | |
6434 | { | |
6435 | case 0: | |
6436 | case DW_TAG_variable: | |
6437 | break; | |
6438 | default: | |
6439 | goto again; | |
6440 | } | |
6441 | break; | |
6442 | default: | |
6443 | break; | |
6444 | } | |
6445 | ||
6446 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
6447 | debug_names::psymbol_tag. */ | |
6448 | switch (m_search) | |
4b514bc8 | 6449 | { |
927aa2e7 JK |
6450 | case VARIABLES_DOMAIN: |
6451 | switch (indexval.dwarf_tag) | |
4b514bc8 | 6452 | { |
927aa2e7 JK |
6453 | case DW_TAG_variable: |
6454 | break; | |
6455 | default: | |
6456 | goto again; | |
4b514bc8 | 6457 | } |
927aa2e7 JK |
6458 | break; |
6459 | case FUNCTIONS_DOMAIN: | |
6460 | switch (indexval.dwarf_tag) | |
4b514bc8 | 6461 | { |
927aa2e7 JK |
6462 | case DW_TAG_subprogram: |
6463 | break; | |
6464 | default: | |
6465 | goto again; | |
4b514bc8 | 6466 | } |
927aa2e7 JK |
6467 | break; |
6468 | case TYPES_DOMAIN: | |
6469 | switch (indexval.dwarf_tag) | |
6470 | { | |
6471 | case DW_TAG_typedef: | |
6472 | case DW_TAG_structure_type: | |
6473 | break; | |
6474 | default: | |
6475 | goto again; | |
6476 | } | |
6477 | break; | |
6478 | default: | |
6479 | break; | |
4b514bc8 | 6480 | } |
927aa2e7 JK |
6481 | |
6482 | return per_cu; | |
4b514bc8 | 6483 | } |
61920122 | 6484 | |
927aa2e7 JK |
6485 | static struct compunit_symtab * |
6486 | dw2_debug_names_lookup_symbol (struct objfile *objfile, int block_index_int, | |
6487 | const char *name, domain_enum domain) | |
4b514bc8 | 6488 | { |
927aa2e7 | 6489 | const block_enum block_index = static_cast<block_enum> (block_index_int); |
ed2dc618 SM |
6490 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6491 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 6492 | |
927aa2e7 JK |
6493 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
6494 | if (!mapp) | |
61920122 | 6495 | { |
927aa2e7 JK |
6496 | /* index is NULL if OBJF_READNOW. */ |
6497 | return NULL; | |
6498 | } | |
6499 | const auto &map = *mapp; | |
9291a0cd | 6500 | |
927aa2e7 JK |
6501 | dw2_debug_names_iterator iter (map, true /* want_specific_block */, |
6502 | block_index, domain, name); | |
9703b513 | 6503 | |
927aa2e7 JK |
6504 | struct compunit_symtab *stab_best = NULL; |
6505 | struct dwarf2_per_cu_data *per_cu; | |
6506 | while ((per_cu = iter.next ()) != NULL) | |
6507 | { | |
6508 | struct symbol *sym, *with_opaque = NULL; | |
6509 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu); | |
6510 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
6511 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
9703b513 | 6512 | |
927aa2e7 JK |
6513 | sym = block_find_symbol (block, name, domain, |
6514 | block_find_non_opaque_type_preferred, | |
6515 | &with_opaque); | |
9703b513 | 6516 | |
927aa2e7 JK |
6517 | /* Some caution must be observed with overloaded functions and |
6518 | methods, since the index will not contain any overload | |
6519 | information (but NAME might contain it). */ | |
a3ec0bb1 | 6520 | |
927aa2e7 JK |
6521 | if (sym != NULL |
6522 | && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) | |
6523 | return stab; | |
6524 | if (with_opaque != NULL | |
6525 | && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque), name) == 0) | |
6526 | stab_best = stab; | |
9703b513 | 6527 | |
927aa2e7 | 6528 | /* Keep looking through other CUs. */ |
9703b513 TT |
6529 | } |
6530 | ||
927aa2e7 | 6531 | return stab_best; |
9703b513 TT |
6532 | } |
6533 | ||
927aa2e7 JK |
6534 | /* This dumps minimal information about .debug_names. It is called |
6535 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
6536 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 6537 | |
927aa2e7 JK |
6538 | static void |
6539 | dw2_debug_names_dump (struct objfile *objfile) | |
6540 | { | |
ed2dc618 SM |
6541 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6542 | = get_dwarf2_per_objfile (objfile); | |
6543 | ||
927aa2e7 JK |
6544 | gdb_assert (dwarf2_per_objfile->using_index); |
6545 | printf_filtered (".debug_names:"); | |
6546 | if (dwarf2_per_objfile->debug_names_table) | |
6547 | printf_filtered (" exists\n"); | |
6548 | else | |
6549 | printf_filtered (" faked for \"readnow\"\n"); | |
6550 | printf_filtered ("\n"); | |
9291a0cd TT |
6551 | } |
6552 | ||
9291a0cd | 6553 | static void |
927aa2e7 JK |
6554 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
6555 | const char *func_name) | |
9291a0cd | 6556 | { |
ed2dc618 SM |
6557 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6558 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 6559 | |
927aa2e7 JK |
6560 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
6561 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 6562 | { |
927aa2e7 | 6563 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 6564 | |
927aa2e7 JK |
6565 | /* Note: It doesn't matter what we pass for block_index here. */ |
6566 | dw2_debug_names_iterator iter (map, false /* want_specific_block */, | |
6567 | GLOBAL_BLOCK, VAR_DOMAIN, func_name); | |
24c79950 | 6568 | |
927aa2e7 JK |
6569 | struct dwarf2_per_cu_data *per_cu; |
6570 | while ((per_cu = iter.next ()) != NULL) | |
6571 | dw2_instantiate_symtab (per_cu); | |
6572 | } | |
6573 | } | |
24c79950 | 6574 | |
927aa2e7 JK |
6575 | static void |
6576 | dw2_debug_names_expand_symtabs_matching | |
6577 | (struct objfile *objfile, | |
6578 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
6579 | const lookup_name_info &lookup_name, | |
6580 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
6581 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
6582 | enum search_domain kind) | |
6583 | { | |
ed2dc618 SM |
6584 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6585 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 6586 | |
927aa2e7 JK |
6587 | /* debug_names_table is NULL if OBJF_READNOW. */ |
6588 | if (!dwarf2_per_objfile->debug_names_table) | |
6589 | return; | |
9291a0cd | 6590 | |
ed2dc618 | 6591 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 6592 | |
44ed8f3e | 6593 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 6594 | |
44ed8f3e PA |
6595 | dw2_expand_symtabs_matching_symbol (map, lookup_name, |
6596 | symbol_matcher, | |
6597 | kind, [&] (offset_type namei) | |
927aa2e7 | 6598 | { |
927aa2e7 JK |
6599 | /* The name was matched, now expand corresponding CUs that were |
6600 | marked. */ | |
6601 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 6602 | |
927aa2e7 JK |
6603 | struct dwarf2_per_cu_data *per_cu; |
6604 | while ((per_cu = iter.next ()) != NULL) | |
6605 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
6606 | expansion_notify); | |
44ed8f3e | 6607 | }); |
9291a0cd TT |
6608 | } |
6609 | ||
927aa2e7 | 6610 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
6611 | { |
6612 | dw2_has_symbols, | |
6613 | dw2_find_last_source_symtab, | |
6614 | dw2_forget_cached_source_info, | |
f8eba3c6 | 6615 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 6616 | dw2_debug_names_lookup_symbol, |
9291a0cd | 6617 | dw2_print_stats, |
927aa2e7 | 6618 | dw2_debug_names_dump, |
9291a0cd | 6619 | dw2_relocate, |
927aa2e7 | 6620 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 6621 | dw2_expand_all_symtabs, |
652a8996 | 6622 | dw2_expand_symtabs_with_fullname, |
40658b94 | 6623 | dw2_map_matching_symbols, |
927aa2e7 | 6624 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 6625 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 6626 | NULL, |
9291a0cd TT |
6627 | dw2_map_symbol_filenames |
6628 | }; | |
6629 | ||
3c0aa29a | 6630 | /* See symfile.h. */ |
9291a0cd | 6631 | |
3c0aa29a PA |
6632 | bool |
6633 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6634 | { |
ed2dc618 SM |
6635 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6636 | = get_dwarf2_per_objfile (objfile); | |
6637 | ||
9291a0cd TT |
6638 | /* If we're about to read full symbols, don't bother with the |
6639 | indices. In this case we also don't care if some other debug | |
6640 | format is making psymtabs, because they are all about to be | |
6641 | expanded anyway. */ | |
6642 | if ((objfile->flags & OBJF_READNOW)) | |
6643 | { | |
6644 | int i; | |
6645 | ||
6646 | dwarf2_per_objfile->using_index = 1; | |
ed2dc618 SM |
6647 | create_all_comp_units (dwarf2_per_objfile); |
6648 | create_all_type_units (dwarf2_per_objfile); | |
7b9f3c50 DE |
6649 | dwarf2_per_objfile->quick_file_names_table = |
6650 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 6651 | |
1fd400ff | 6652 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 6653 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 6654 | { |
ed2dc618 | 6655 | dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
9291a0cd | 6656 | |
e254ef6a DE |
6657 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6658 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
6659 | } |
6660 | ||
6661 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6662 | these functions will be no-ops because we will have expanded | |
6663 | all symtabs. */ | |
3c0aa29a PA |
6664 | *index_kind = dw_index_kind::GDB_INDEX; |
6665 | return true; | |
9291a0cd TT |
6666 | } |
6667 | ||
ed2dc618 | 6668 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
6669 | { |
6670 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
6671 | return true; | |
6672 | } | |
927aa2e7 | 6673 | |
9291a0cd | 6674 | if (dwarf2_read_index (objfile)) |
3c0aa29a PA |
6675 | { |
6676 | *index_kind = dw_index_kind::GDB_INDEX; | |
6677 | return true; | |
6678 | } | |
9291a0cd | 6679 | |
3c0aa29a | 6680 | return false; |
9291a0cd TT |
6681 | } |
6682 | ||
6683 | \f | |
6684 | ||
dce234bc PP |
6685 | /* Build a partial symbol table. */ |
6686 | ||
6687 | void | |
f29dff0a | 6688 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6689 | { |
ed2dc618 SM |
6690 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6691 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 6692 | |
af5bf4ad SM |
6693 | if (objfile->global_psymbols.capacity () == 0 |
6694 | && objfile->static_psymbols.capacity () == 0) | |
6695 | init_psymbol_list (objfile, 1024); | |
c906108c | 6696 | |
492d29ea | 6697 | TRY |
c9bf0622 TT |
6698 | { |
6699 | /* This isn't really ideal: all the data we allocate on the | |
6700 | objfile's obstack is still uselessly kept around. However, | |
6701 | freeing it seems unsafe. */ | |
906768f9 | 6702 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 6703 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 6704 | psymtabs.keep (); |
c9bf0622 | 6705 | } |
492d29ea PA |
6706 | CATCH (except, RETURN_MASK_ERROR) |
6707 | { | |
6708 | exception_print (gdb_stderr, except); | |
6709 | } | |
6710 | END_CATCH | |
c906108c | 6711 | } |
c906108c | 6712 | |
1ce1cefd DE |
6713 | /* Return the total length of the CU described by HEADER. */ |
6714 | ||
6715 | static unsigned int | |
6716 | get_cu_length (const struct comp_unit_head *header) | |
6717 | { | |
6718 | return header->initial_length_size + header->length; | |
6719 | } | |
6720 | ||
9c541725 | 6721 | /* Return TRUE if SECT_OFF is within CU_HEADER. */ |
45452591 | 6722 | |
9c541725 PA |
6723 | static inline bool |
6724 | offset_in_cu_p (const comp_unit_head *cu_header, sect_offset sect_off) | |
45452591 | 6725 | { |
9c541725 PA |
6726 | sect_offset bottom = cu_header->sect_off; |
6727 | sect_offset top = cu_header->sect_off + get_cu_length (cu_header); | |
9a619af0 | 6728 | |
9c541725 | 6729 | return sect_off >= bottom && sect_off < top; |
45452591 DE |
6730 | } |
6731 | ||
3b80fe9b DE |
6732 | /* Find the base address of the compilation unit for range lists and |
6733 | location lists. It will normally be specified by DW_AT_low_pc. | |
6734 | In DWARF-3 draft 4, the base address could be overridden by | |
6735 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6736 | compilation units with discontinuous ranges. */ | |
6737 | ||
6738 | static void | |
6739 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6740 | { | |
6741 | struct attribute *attr; | |
6742 | ||
6743 | cu->base_known = 0; | |
6744 | cu->base_address = 0; | |
6745 | ||
6746 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
6747 | if (attr) | |
6748 | { | |
31aa7e4e | 6749 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6750 | cu->base_known = 1; |
6751 | } | |
6752 | else | |
6753 | { | |
6754 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
6755 | if (attr) | |
6756 | { | |
31aa7e4e | 6757 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6758 | cu->base_known = 1; |
6759 | } | |
6760 | } | |
6761 | } | |
6762 | ||
93311388 | 6763 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 6764 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
6765 | NOTE: This leaves members offset, first_die_offset to be filled in |
6766 | by the caller. */ | |
107d2387 | 6767 | |
d521ce57 | 6768 | static const gdb_byte * |
107d2387 | 6769 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
6770 | const gdb_byte *info_ptr, |
6771 | struct dwarf2_section_info *section, | |
6772 | rcuh_kind section_kind) | |
107d2387 AC |
6773 | { |
6774 | int signed_addr; | |
891d2f0b | 6775 | unsigned int bytes_read; |
43988095 JK |
6776 | const char *filename = get_section_file_name (section); |
6777 | bfd *abfd = get_section_bfd_owner (section); | |
c764a876 DE |
6778 | |
6779 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
6780 | cu_header->initial_length_size = bytes_read; | |
6781 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 6782 | info_ptr += bytes_read; |
107d2387 AC |
6783 | cu_header->version = read_2_bytes (abfd, info_ptr); |
6784 | info_ptr += 2; | |
43988095 JK |
6785 | if (cu_header->version < 5) |
6786 | switch (section_kind) | |
6787 | { | |
6788 | case rcuh_kind::COMPILE: | |
6789 | cu_header->unit_type = DW_UT_compile; | |
6790 | break; | |
6791 | case rcuh_kind::TYPE: | |
6792 | cu_header->unit_type = DW_UT_type; | |
6793 | break; | |
6794 | default: | |
6795 | internal_error (__FILE__, __LINE__, | |
6796 | _("read_comp_unit_head: invalid section_kind")); | |
6797 | } | |
6798 | else | |
6799 | { | |
6800 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
6801 | (read_1_byte (abfd, info_ptr)); | |
6802 | info_ptr += 1; | |
6803 | switch (cu_header->unit_type) | |
6804 | { | |
6805 | case DW_UT_compile: | |
6806 | if (section_kind != rcuh_kind::COMPILE) | |
6807 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6808 | "(is DW_UT_compile, should be DW_UT_type) [in module %s]"), | |
6809 | filename); | |
6810 | break; | |
6811 | case DW_UT_type: | |
6812 | section_kind = rcuh_kind::TYPE; | |
6813 | break; | |
6814 | default: | |
6815 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6816 | "(is %d, should be %d or %d) [in module %s]"), | |
6817 | cu_header->unit_type, DW_UT_compile, DW_UT_type, filename); | |
6818 | } | |
6819 | ||
6820 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6821 | info_ptr += 1; | |
6822 | } | |
9c541725 PA |
6823 | cu_header->abbrev_sect_off = (sect_offset) read_offset (abfd, info_ptr, |
6824 | cu_header, | |
6825 | &bytes_read); | |
613e1657 | 6826 | info_ptr += bytes_read; |
43988095 JK |
6827 | if (cu_header->version < 5) |
6828 | { | |
6829 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6830 | info_ptr += 1; | |
6831 | } | |
107d2387 AC |
6832 | signed_addr = bfd_get_sign_extend_vma (abfd); |
6833 | if (signed_addr < 0) | |
8e65ff28 | 6834 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6835 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 6836 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 6837 | |
43988095 JK |
6838 | if (section_kind == rcuh_kind::TYPE) |
6839 | { | |
6840 | LONGEST type_offset; | |
6841 | ||
6842 | cu_header->signature = read_8_bytes (abfd, info_ptr); | |
6843 | info_ptr += 8; | |
6844 | ||
6845 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); | |
6846 | info_ptr += bytes_read; | |
9c541725 PA |
6847 | cu_header->type_cu_offset_in_tu = (cu_offset) type_offset; |
6848 | if (to_underlying (cu_header->type_cu_offset_in_tu) != type_offset) | |
43988095 JK |
6849 | error (_("Dwarf Error: Too big type_offset in compilation unit " |
6850 | "header (is %s) [in module %s]"), plongest (type_offset), | |
6851 | filename); | |
6852 | } | |
6853 | ||
107d2387 AC |
6854 | return info_ptr; |
6855 | } | |
6856 | ||
36586728 TT |
6857 | /* Helper function that returns the proper abbrev section for |
6858 | THIS_CU. */ | |
6859 | ||
6860 | static struct dwarf2_section_info * | |
6861 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6862 | { | |
6863 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 6864 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
6865 | |
6866 | if (this_cu->is_dwz) | |
ed2dc618 | 6867 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
6868 | else |
6869 | abbrev = &dwarf2_per_objfile->abbrev; | |
6870 | ||
6871 | return abbrev; | |
6872 | } | |
6873 | ||
9ff913ba DE |
6874 | /* Subroutine of read_and_check_comp_unit_head and |
6875 | read_and_check_type_unit_head to simplify them. | |
6876 | Perform various error checking on the header. */ | |
6877 | ||
6878 | static void | |
ed2dc618 SM |
6879 | error_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6880 | struct comp_unit_head *header, | |
4bdcc0c1 DE |
6881 | struct dwarf2_section_info *section, |
6882 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 6883 | { |
a32a8923 | 6884 | const char *filename = get_section_file_name (section); |
9ff913ba | 6885 | |
43988095 | 6886 | if (header->version < 2 || header->version > 5) |
9ff913ba | 6887 | error (_("Dwarf Error: wrong version in compilation unit header " |
43988095 | 6888 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), header->version, |
9ff913ba DE |
6889 | filename); |
6890 | ||
9c541725 | 6891 | if (to_underlying (header->abbrev_sect_off) |
36586728 | 6892 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9d8780f0 SM |
6893 | error (_("Dwarf Error: bad offset (%s) in compilation unit header " |
6894 | "(offset %s + 6) [in module %s]"), | |
6895 | sect_offset_str (header->abbrev_sect_off), | |
6896 | sect_offset_str (header->sect_off), | |
9ff913ba DE |
6897 | filename); |
6898 | ||
9c541725 | 6899 | /* Cast to ULONGEST to use 64-bit arithmetic when possible to |
9ff913ba | 6900 | avoid potential 32-bit overflow. */ |
9c541725 | 6901 | if (((ULONGEST) header->sect_off + get_cu_length (header)) |
9ff913ba | 6902 | > section->size) |
9c541725 | 6903 | error (_("Dwarf Error: bad length (0x%x) in compilation unit header " |
9d8780f0 SM |
6904 | "(offset %s + 0) [in module %s]"), |
6905 | header->length, sect_offset_str (header->sect_off), | |
9ff913ba DE |
6906 | filename); |
6907 | } | |
6908 | ||
6909 | /* Read in a CU/TU header and perform some basic error checking. | |
6910 | The contents of the header are stored in HEADER. | |
6911 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 6912 | |
d521ce57 | 6913 | static const gdb_byte * |
ed2dc618 SM |
6914 | read_and_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6915 | struct comp_unit_head *header, | |
9ff913ba | 6916 | struct dwarf2_section_info *section, |
4bdcc0c1 | 6917 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 6918 | const gdb_byte *info_ptr, |
43988095 | 6919 | rcuh_kind section_kind) |
72bf9492 | 6920 | { |
d521ce57 | 6921 | const gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 | 6922 | |
9c541725 | 6923 | header->sect_off = (sect_offset) (beg_of_comp_unit - section->buffer); |
adabb602 | 6924 | |
43988095 | 6925 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 6926 | |
9c541725 | 6927 | header->first_die_cu_offset = (cu_offset) (info_ptr - beg_of_comp_unit); |
348e048f | 6928 | |
ed2dc618 SM |
6929 | error_check_comp_unit_head (dwarf2_per_objfile, header, section, |
6930 | abbrev_section); | |
9ff913ba DE |
6931 | |
6932 | return info_ptr; | |
348e048f DE |
6933 | } |
6934 | ||
f4dc4d17 DE |
6935 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6936 | ||
6937 | static sect_offset | |
ed2dc618 SM |
6938 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6939 | struct dwarf2_section_info *section, | |
9c541725 | 6940 | sect_offset sect_off) |
f4dc4d17 | 6941 | { |
a32a8923 | 6942 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 6943 | const gdb_byte *info_ptr; |
ac298888 | 6944 | unsigned int initial_length_size, offset_size; |
43988095 | 6945 | uint16_t version; |
f4dc4d17 DE |
6946 | |
6947 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
9c541725 | 6948 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6949 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6950 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6951 | info_ptr += initial_length_size; |
6952 | ||
6953 | version = read_2_bytes (abfd, info_ptr); | |
6954 | info_ptr += 2; | |
6955 | if (version >= 5) | |
6956 | { | |
6957 | /* Skip unit type and address size. */ | |
6958 | info_ptr += 2; | |
6959 | } | |
6960 | ||
9c541725 | 6961 | return (sect_offset) read_offset_1 (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6962 | } |
6963 | ||
aaa75496 JB |
6964 | /* Allocate a new partial symtab for file named NAME and mark this new |
6965 | partial symtab as being an include of PST. */ | |
6966 | ||
6967 | static void | |
d521ce57 | 6968 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
6969 | struct objfile *objfile) |
6970 | { | |
6971 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
6972 | ||
fbd9ab74 JK |
6973 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
6974 | { | |
6975 | /* It shares objfile->objfile_obstack. */ | |
6976 | subpst->dirname = pst->dirname; | |
6977 | } | |
6978 | ||
aaa75496 JB |
6979 | subpst->textlow = 0; |
6980 | subpst->texthigh = 0; | |
6981 | ||
8d749320 SM |
6982 | subpst->dependencies |
6983 | = XOBNEW (&objfile->objfile_obstack, struct partial_symtab *); | |
aaa75496 JB |
6984 | subpst->dependencies[0] = pst; |
6985 | subpst->number_of_dependencies = 1; | |
6986 | ||
6987 | subpst->globals_offset = 0; | |
6988 | subpst->n_global_syms = 0; | |
6989 | subpst->statics_offset = 0; | |
6990 | subpst->n_static_syms = 0; | |
43f3e411 | 6991 | subpst->compunit_symtab = NULL; |
aaa75496 JB |
6992 | subpst->read_symtab = pst->read_symtab; |
6993 | subpst->readin = 0; | |
6994 | ||
6995 | /* No private part is necessary for include psymtabs. This property | |
6996 | can be used to differentiate between such include psymtabs and | |
10b3939b | 6997 | the regular ones. */ |
58a9656e | 6998 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
6999 | } |
7000 | ||
7001 | /* Read the Line Number Program data and extract the list of files | |
7002 | included by the source file represented by PST. Build an include | |
d85a05f0 | 7003 | partial symtab for each of these included files. */ |
aaa75496 JB |
7004 | |
7005 | static void | |
7006 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
7007 | struct die_info *die, |
7008 | struct partial_symtab *pst) | |
aaa75496 | 7009 | { |
fff8551c | 7010 | line_header_up lh; |
d85a05f0 | 7011 | struct attribute *attr; |
aaa75496 | 7012 | |
d85a05f0 DJ |
7013 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
7014 | if (attr) | |
9c541725 | 7015 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
7016 | if (lh == NULL) |
7017 | return; /* No linetable, so no includes. */ | |
7018 | ||
c6da4cef | 7019 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
fff8551c | 7020 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, pst->textlow, 1); |
aaa75496 JB |
7021 | } |
7022 | ||
348e048f | 7023 | static hashval_t |
52dc124a | 7024 | hash_signatured_type (const void *item) |
348e048f | 7025 | { |
9a3c8263 SM |
7026 | const struct signatured_type *sig_type |
7027 | = (const struct signatured_type *) item; | |
9a619af0 | 7028 | |
348e048f | 7029 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 7030 | return sig_type->signature; |
348e048f DE |
7031 | } |
7032 | ||
7033 | static int | |
52dc124a | 7034 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 7035 | { |
9a3c8263 SM |
7036 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
7037 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 7038 | |
348e048f DE |
7039 | return lhs->signature == rhs->signature; |
7040 | } | |
7041 | ||
1fd400ff TT |
7042 | /* Allocate a hash table for signatured types. */ |
7043 | ||
7044 | static htab_t | |
673bfd45 | 7045 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
7046 | { |
7047 | return htab_create_alloc_ex (41, | |
52dc124a DE |
7048 | hash_signatured_type, |
7049 | eq_signatured_type, | |
1fd400ff TT |
7050 | NULL, |
7051 | &objfile->objfile_obstack, | |
7052 | hashtab_obstack_allocate, | |
7053 | dummy_obstack_deallocate); | |
7054 | } | |
7055 | ||
d467dd73 | 7056 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
7057 | |
7058 | static int | |
d467dd73 | 7059 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 7060 | { |
9a3c8263 SM |
7061 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
7062 | struct signatured_type ***datap = (struct signatured_type ***) datum; | |
1fd400ff | 7063 | |
b4dd5633 | 7064 | **datap = sigt; |
1fd400ff TT |
7065 | ++*datap; |
7066 | ||
7067 | return 1; | |
7068 | } | |
7069 | ||
78d4d2c5 | 7070 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
7071 | and fill them into TYPES_HTAB. It will process only type units, |
7072 | therefore DW_UT_type. */ | |
c88ee1f0 | 7073 | |
78d4d2c5 | 7074 | static void |
ed2dc618 SM |
7075 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
7076 | struct dwo_file *dwo_file, | |
43988095 JK |
7077 | dwarf2_section_info *section, htab_t &types_htab, |
7078 | rcuh_kind section_kind) | |
348e048f | 7079 | { |
3019eac3 | 7080 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 7081 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
7082 | bfd *abfd; |
7083 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 7084 | |
4bdcc0c1 DE |
7085 | abbrev_section = (dwo_file != NULL |
7086 | ? &dwo_file->sections.abbrev | |
7087 | : &dwarf2_per_objfile->abbrev); | |
7088 | ||
b4f54984 | 7089 | if (dwarf_read_debug) |
43988095 JK |
7090 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
7091 | get_section_name (section), | |
a32a8923 | 7092 | get_section_file_name (abbrev_section)); |
09406207 | 7093 | |
78d4d2c5 JK |
7094 | dwarf2_read_section (objfile, section); |
7095 | info_ptr = section->buffer; | |
348e048f | 7096 | |
78d4d2c5 JK |
7097 | if (info_ptr == NULL) |
7098 | return; | |
348e048f | 7099 | |
78d4d2c5 JK |
7100 | /* We can't set abfd until now because the section may be empty or |
7101 | not present, in which case the bfd is unknown. */ | |
7102 | abfd = get_section_bfd_owner (section); | |
348e048f | 7103 | |
78d4d2c5 JK |
7104 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
7105 | because we don't need to read any dies: the signature is in the | |
7106 | header. */ | |
3019eac3 | 7107 | |
78d4d2c5 JK |
7108 | end_ptr = info_ptr + section->size; |
7109 | while (info_ptr < end_ptr) | |
7110 | { | |
78d4d2c5 JK |
7111 | struct signatured_type *sig_type; |
7112 | struct dwo_unit *dwo_tu; | |
7113 | void **slot; | |
7114 | const gdb_byte *ptr = info_ptr; | |
7115 | struct comp_unit_head header; | |
7116 | unsigned int length; | |
8b70b953 | 7117 | |
9c541725 | 7118 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 7119 | |
a49dd8dd JK |
7120 | /* Initialize it due to a false compiler warning. */ |
7121 | header.signature = -1; | |
9c541725 | 7122 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 7123 | |
78d4d2c5 JK |
7124 | /* We need to read the type's signature in order to build the hash |
7125 | table, but we don't need anything else just yet. */ | |
348e048f | 7126 | |
ed2dc618 | 7127 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 7128 | abbrev_section, ptr, section_kind); |
348e048f | 7129 | |
78d4d2c5 | 7130 | length = get_cu_length (&header); |
6caca83c | 7131 | |
78d4d2c5 JK |
7132 | /* Skip dummy type units. */ |
7133 | if (ptr >= info_ptr + length | |
43988095 JK |
7134 | || peek_abbrev_code (abfd, ptr) == 0 |
7135 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
7136 | { |
7137 | info_ptr += length; | |
7138 | continue; | |
7139 | } | |
dee91e82 | 7140 | |
78d4d2c5 JK |
7141 | if (types_htab == NULL) |
7142 | { | |
7143 | if (dwo_file) | |
7144 | types_htab = allocate_dwo_unit_table (objfile); | |
7145 | else | |
7146 | types_htab = allocate_signatured_type_table (objfile); | |
7147 | } | |
8b70b953 | 7148 | |
78d4d2c5 JK |
7149 | if (dwo_file) |
7150 | { | |
7151 | sig_type = NULL; | |
7152 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7153 | struct dwo_unit); | |
7154 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 7155 | dwo_tu->signature = header.signature; |
9c541725 | 7156 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 7157 | dwo_tu->section = section; |
9c541725 | 7158 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
7159 | dwo_tu->length = length; |
7160 | } | |
7161 | else | |
7162 | { | |
7163 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
7164 | The real type_offset is in the DWO file. */ | |
7165 | dwo_tu = NULL; | |
7166 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7167 | struct signatured_type); | |
43988095 | 7168 | sig_type->signature = header.signature; |
9c541725 | 7169 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 7170 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
7171 | sig_type->per_cu.is_debug_types = 1; |
7172 | sig_type->per_cu.section = section; | |
9c541725 | 7173 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
7174 | sig_type->per_cu.length = length; |
7175 | } | |
7176 | ||
7177 | slot = htab_find_slot (types_htab, | |
7178 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
7179 | INSERT); | |
7180 | gdb_assert (slot != NULL); | |
7181 | if (*slot != NULL) | |
7182 | { | |
9c541725 | 7183 | sect_offset dup_sect_off; |
0349ea22 | 7184 | |
3019eac3 DE |
7185 | if (dwo_file) |
7186 | { | |
78d4d2c5 JK |
7187 | const struct dwo_unit *dup_tu |
7188 | = (const struct dwo_unit *) *slot; | |
7189 | ||
9c541725 | 7190 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
7191 | } |
7192 | else | |
7193 | { | |
78d4d2c5 JK |
7194 | const struct signatured_type *dup_tu |
7195 | = (const struct signatured_type *) *slot; | |
7196 | ||
9c541725 | 7197 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 7198 | } |
8b70b953 | 7199 | |
78d4d2c5 | 7200 | complaint (&symfile_complaints, |
9d8780f0 SM |
7201 | _("debug type entry at offset %s is duplicate to" |
7202 | " the entry at offset %s, signature %s"), | |
7203 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 7204 | hex_string (header.signature)); |
78d4d2c5 JK |
7205 | } |
7206 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 7207 | |
78d4d2c5 | 7208 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
7209 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
7210 | sect_offset_str (sect_off), | |
43988095 | 7211 | hex_string (header.signature)); |
3019eac3 | 7212 | |
78d4d2c5 JK |
7213 | info_ptr += length; |
7214 | } | |
7215 | } | |
3019eac3 | 7216 | |
78d4d2c5 JK |
7217 | /* Create the hash table of all entries in the .debug_types |
7218 | (or .debug_types.dwo) section(s). | |
7219 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
7220 | otherwise it is NULL. | |
b3c8eb43 | 7221 | |
78d4d2c5 | 7222 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 7223 | |
78d4d2c5 | 7224 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 7225 | |
78d4d2c5 | 7226 | static void |
ed2dc618 SM |
7227 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
7228 | struct dwo_file *dwo_file, | |
78d4d2c5 JK |
7229 | VEC (dwarf2_section_info_def) *types, |
7230 | htab_t &types_htab) | |
7231 | { | |
7232 | int ix; | |
7233 | struct dwarf2_section_info *section; | |
7234 | ||
7235 | if (VEC_empty (dwarf2_section_info_def, types)) | |
7236 | return; | |
348e048f | 7237 | |
78d4d2c5 JK |
7238 | for (ix = 0; |
7239 | VEC_iterate (dwarf2_section_info_def, types, ix, section); | |
7240 | ++ix) | |
ed2dc618 SM |
7241 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, section, |
7242 | types_htab, rcuh_kind::TYPE); | |
3019eac3 DE |
7243 | } |
7244 | ||
7245 | /* Create the hash table of all entries in the .debug_types section, | |
7246 | and initialize all_type_units. | |
7247 | The result is zero if there is an error (e.g. missing .debug_types section), | |
7248 | otherwise non-zero. */ | |
7249 | ||
7250 | static int | |
ed2dc618 | 7251 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 7252 | { |
78d4d2c5 | 7253 | htab_t types_htab = NULL; |
b4dd5633 | 7254 | struct signatured_type **iter; |
3019eac3 | 7255 | |
ed2dc618 SM |
7256 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
7257 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 7258 | rcuh_kind::COMPILE); |
ed2dc618 SM |
7259 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
7260 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
7261 | if (types_htab == NULL) |
7262 | { | |
7263 | dwarf2_per_objfile->signatured_types = NULL; | |
7264 | return 0; | |
7265 | } | |
7266 | ||
348e048f DE |
7267 | dwarf2_per_objfile->signatured_types = types_htab; |
7268 | ||
6aa5f3a6 DE |
7269 | dwarf2_per_objfile->n_type_units |
7270 | = dwarf2_per_objfile->n_allocated_type_units | |
7271 | = htab_elements (types_htab); | |
8d749320 SM |
7272 | dwarf2_per_objfile->all_type_units = |
7273 | XNEWVEC (struct signatured_type *, dwarf2_per_objfile->n_type_units); | |
d467dd73 DE |
7274 | iter = &dwarf2_per_objfile->all_type_units[0]; |
7275 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
7276 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
7277 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 7278 | |
348e048f DE |
7279 | return 1; |
7280 | } | |
7281 | ||
6aa5f3a6 DE |
7282 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
7283 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
7284 | Otherwise we find one. */ | |
7285 | ||
7286 | static struct signatured_type * | |
ed2dc618 SM |
7287 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
7288 | void **slot) | |
6aa5f3a6 DE |
7289 | { |
7290 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7291 | int n_type_units = dwarf2_per_objfile->n_type_units; | |
7292 | struct signatured_type *sig_type; | |
7293 | ||
7294 | gdb_assert (n_type_units <= dwarf2_per_objfile->n_allocated_type_units); | |
7295 | ++n_type_units; | |
7296 | if (n_type_units > dwarf2_per_objfile->n_allocated_type_units) | |
7297 | { | |
7298 | if (dwarf2_per_objfile->n_allocated_type_units == 0) | |
7299 | dwarf2_per_objfile->n_allocated_type_units = 1; | |
7300 | dwarf2_per_objfile->n_allocated_type_units *= 2; | |
7301 | dwarf2_per_objfile->all_type_units | |
224c3ddb SM |
7302 | = XRESIZEVEC (struct signatured_type *, |
7303 | dwarf2_per_objfile->all_type_units, | |
7304 | dwarf2_per_objfile->n_allocated_type_units); | |
6aa5f3a6 DE |
7305 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; |
7306 | } | |
7307 | dwarf2_per_objfile->n_type_units = n_type_units; | |
7308 | ||
7309 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7310 | struct signatured_type); | |
7311 | dwarf2_per_objfile->all_type_units[n_type_units - 1] = sig_type; | |
7312 | sig_type->signature = sig; | |
7313 | sig_type->per_cu.is_debug_types = 1; | |
7314 | if (dwarf2_per_objfile->using_index) | |
7315 | { | |
7316 | sig_type->per_cu.v.quick = | |
7317 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7318 | struct dwarf2_per_cu_quick_data); | |
7319 | } | |
7320 | ||
7321 | if (slot == NULL) | |
7322 | { | |
7323 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
7324 | sig_type, INSERT); | |
7325 | } | |
7326 | gdb_assert (*slot == NULL); | |
7327 | *slot = sig_type; | |
7328 | /* The rest of sig_type must be filled in by the caller. */ | |
7329 | return sig_type; | |
7330 | } | |
7331 | ||
a2ce51a0 DE |
7332 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
7333 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
7334 | ||
7335 | static void | |
ed2dc618 | 7336 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
7337 | struct signatured_type *sig_entry, |
7338 | struct dwo_unit *dwo_entry) | |
7339 | { | |
7ee85ab1 | 7340 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
7341 | gdb_assert (! sig_entry->per_cu.queued); |
7342 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
7343 | if (dwarf2_per_objfile->using_index) |
7344 | { | |
7345 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 7346 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
7347 | } |
7348 | else | |
7349 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 7350 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 7351 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 7352 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
7353 | gdb_assert (sig_entry->dwo_unit == NULL); |
7354 | ||
7355 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 7356 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
7357 | sig_entry->per_cu.length = dwo_entry->length; |
7358 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 7359 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
7360 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
7361 | sig_entry->dwo_unit = dwo_entry; | |
7362 | } | |
7363 | ||
7364 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
7365 | If we haven't read the TU yet, create the signatured_type data structure |
7366 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
7367 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
7368 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
7369 | containing that CU. Otherwise we could end up reading several other DWO | |
7370 | files (due to comdat folding) to process the transitive closure of all the | |
7371 | mentioned TUs, and that can be slow. The current DWO file will have every | |
7372 | type signature that it needs. | |
a2ce51a0 DE |
7373 | We only do this for .gdb_index because in the psymtab case we already have |
7374 | to read all the DWOs to build the type unit groups. */ | |
7375 | ||
7376 | static struct signatured_type * | |
7377 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
7378 | { | |
518817b3 SM |
7379 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7380 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
7381 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7382 | struct dwo_file *dwo_file; | |
7383 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
7384 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 7385 | void **slot; |
a2ce51a0 DE |
7386 | |
7387 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
7388 | ||
6aa5f3a6 DE |
7389 | /* If TU skeletons have been removed then we may not have read in any |
7390 | TUs yet. */ | |
7391 | if (dwarf2_per_objfile->signatured_types == NULL) | |
7392 | { | |
7393 | dwarf2_per_objfile->signatured_types | |
7394 | = allocate_signatured_type_table (objfile); | |
7395 | } | |
a2ce51a0 DE |
7396 | |
7397 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
7398 | Use the global signatured_types array to do our own comdat-folding |
7399 | of types. If this is the first time we're reading this TU, and | |
7400 | the TU has an entry in .gdb_index, replace the recorded data from | |
7401 | .gdb_index with this TU. */ | |
a2ce51a0 | 7402 | |
a2ce51a0 | 7403 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
7404 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
7405 | &find_sig_entry, INSERT); | |
9a3c8263 | 7406 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
7407 | |
7408 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
7409 | read. Don't reassign the global entry to point to this DWO if that's |
7410 | the case. Also note that if the TU is already being read, it may not | |
7411 | have come from a DWO, the program may be a mix of Fission-compiled | |
7412 | code and non-Fission-compiled code. */ | |
7413 | ||
7414 | /* Have we already tried to read this TU? | |
7415 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7416 | needn't exist in the global table yet). */ | |
7417 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
7418 | return sig_entry; |
7419 | ||
6aa5f3a6 DE |
7420 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
7421 | dwo_unit of the TU itself. */ | |
7422 | dwo_file = cu->dwo_unit->dwo_file; | |
7423 | ||
a2ce51a0 DE |
7424 | /* Ok, this is the first time we're reading this TU. */ |
7425 | if (dwo_file->tus == NULL) | |
7426 | return NULL; | |
7427 | find_dwo_entry.signature = sig; | |
9a3c8263 | 7428 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
7429 | if (dwo_entry == NULL) |
7430 | return NULL; | |
7431 | ||
6aa5f3a6 DE |
7432 | /* If the global table doesn't have an entry for this TU, add one. */ |
7433 | if (sig_entry == NULL) | |
ed2dc618 | 7434 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 7435 | |
ed2dc618 | 7436 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 7437 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
7438 | return sig_entry; |
7439 | } | |
7440 | ||
a2ce51a0 DE |
7441 | /* Subroutine of lookup_signatured_type. |
7442 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
7443 | then try the DWP file. If the TU stub (skeleton) has been removed then |
7444 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
7445 | |
7446 | static struct signatured_type * | |
7447 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
7448 | { | |
518817b3 SM |
7449 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7450 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 | 7451 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ed2dc618 | 7452 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
7453 | struct dwo_unit *dwo_entry; |
7454 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 7455 | void **slot; |
a2ce51a0 DE |
7456 | |
7457 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
7458 | gdb_assert (dwp_file != NULL); | |
7459 | ||
6aa5f3a6 DE |
7460 | /* If TU skeletons have been removed then we may not have read in any |
7461 | TUs yet. */ | |
7462 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 7463 | { |
6aa5f3a6 DE |
7464 | dwarf2_per_objfile->signatured_types |
7465 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
7466 | } |
7467 | ||
6aa5f3a6 DE |
7468 | find_sig_entry.signature = sig; |
7469 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
7470 | &find_sig_entry, INSERT); | |
9a3c8263 | 7471 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
7472 | |
7473 | /* Have we already tried to read this TU? | |
7474 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7475 | needn't exist in the global table yet). */ | |
7476 | if (sig_entry != NULL) | |
7477 | return sig_entry; | |
7478 | ||
a2ce51a0 DE |
7479 | if (dwp_file->tus == NULL) |
7480 | return NULL; | |
ed2dc618 | 7481 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 7482 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
7483 | if (dwo_entry == NULL) |
7484 | return NULL; | |
7485 | ||
ed2dc618 SM |
7486 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
7487 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 7488 | |
a2ce51a0 DE |
7489 | return sig_entry; |
7490 | } | |
7491 | ||
380bca97 | 7492 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
7493 | Returns NULL if signature SIG is not present in the table. |
7494 | It is up to the caller to complain about this. */ | |
348e048f DE |
7495 | |
7496 | static struct signatured_type * | |
a2ce51a0 | 7497 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 7498 | { |
518817b3 SM |
7499 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7500 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 7501 | |
a2ce51a0 DE |
7502 | if (cu->dwo_unit |
7503 | && dwarf2_per_objfile->using_index) | |
7504 | { | |
7505 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
7506 | These cases require special processing. */ | |
ed2dc618 | 7507 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
7508 | return lookup_dwo_signatured_type (cu, sig); |
7509 | else | |
7510 | return lookup_dwp_signatured_type (cu, sig); | |
7511 | } | |
7512 | else | |
7513 | { | |
7514 | struct signatured_type find_entry, *entry; | |
348e048f | 7515 | |
a2ce51a0 DE |
7516 | if (dwarf2_per_objfile->signatured_types == NULL) |
7517 | return NULL; | |
7518 | find_entry.signature = sig; | |
9a3c8263 SM |
7519 | entry = ((struct signatured_type *) |
7520 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
7521 | return entry; |
7522 | } | |
348e048f | 7523 | } |
42e7ad6c DE |
7524 | \f |
7525 | /* Low level DIE reading support. */ | |
348e048f | 7526 | |
d85a05f0 DJ |
7527 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
7528 | ||
7529 | static void | |
7530 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 7531 | struct dwarf2_cu *cu, |
3019eac3 | 7532 | struct dwarf2_section_info *section, |
685af9cd TT |
7533 | struct dwo_file *dwo_file, |
7534 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 7535 | { |
fceca515 | 7536 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 7537 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 7538 | reader->cu = cu; |
3019eac3 | 7539 | reader->dwo_file = dwo_file; |
dee91e82 DE |
7540 | reader->die_section = section; |
7541 | reader->buffer = section->buffer; | |
f664829e | 7542 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 7543 | reader->comp_dir = NULL; |
685af9cd | 7544 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
7545 | } |
7546 | ||
b0c7bfa9 DE |
7547 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
7548 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
7549 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
7550 | already. | |
7551 | ||
7552 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
7553 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
7554 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
7555 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
7556 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
7557 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
7558 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
7559 | are filled in with the info of the DIE from the DWO file. | |
685af9cd TT |
7560 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
7561 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
7562 | kept around for at least as long as *RESULT_READER. | |
7563 | ||
b0c7bfa9 DE |
7564 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
7565 | ||
7566 | static int | |
7567 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
7568 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 7569 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 7570 | const char *stub_comp_dir, |
b0c7bfa9 | 7571 | struct die_reader_specs *result_reader, |
d521ce57 | 7572 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 7573 | struct die_info **result_comp_unit_die, |
685af9cd TT |
7574 | int *result_has_children, |
7575 | abbrev_table_up *result_dwo_abbrev_table) | |
b0c7bfa9 | 7576 | { |
ed2dc618 | 7577 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
7578 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7579 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 7580 | bfd *abfd; |
d521ce57 | 7581 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
7582 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
7583 | int i,num_extra_attrs; | |
7584 | struct dwarf2_section_info *dwo_abbrev_section; | |
7585 | struct attribute *attr; | |
7586 | struct die_info *comp_unit_die; | |
7587 | ||
b0aeadb3 DE |
7588 | /* At most one of these may be provided. */ |
7589 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 7590 | |
b0c7bfa9 DE |
7591 | /* These attributes aren't processed until later: |
7592 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
7593 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
7594 | referenced later. However, these attributes are found in the stub | |
7595 | which we won't have later. In order to not impose this complication | |
7596 | on the rest of the code, we read them here and copy them to the | |
7597 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
7598 | |
7599 | stmt_list = NULL; | |
7600 | low_pc = NULL; | |
7601 | high_pc = NULL; | |
7602 | ranges = NULL; | |
7603 | comp_dir = NULL; | |
7604 | ||
7605 | if (stub_comp_unit_die != NULL) | |
7606 | { | |
7607 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
7608 | DWO file. */ | |
7609 | if (! this_cu->is_debug_types) | |
7610 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
7611 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
7612 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
7613 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
7614 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
7615 | ||
7616 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
7617 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
7618 | cu->addr_base = 0; | |
7619 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
7620 | if (attr) | |
7621 | cu->addr_base = DW_UNSND (attr); | |
7622 | ||
7623 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
7624 | We need the value before we can process DW_AT_ranges. */ | |
7625 | cu->ranges_base = 0; | |
7626 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
7627 | if (attr) | |
7628 | cu->ranges_base = DW_UNSND (attr); | |
7629 | } | |
a2ce51a0 DE |
7630 | else if (stub_comp_dir != NULL) |
7631 | { | |
7632 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 7633 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
7634 | comp_dir->name = DW_AT_comp_dir; |
7635 | comp_dir->form = DW_FORM_string; | |
7636 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
7637 | DW_STRING (comp_dir) = stub_comp_dir; | |
7638 | } | |
b0c7bfa9 DE |
7639 | |
7640 | /* Set up for reading the DWO CU/TU. */ | |
7641 | cu->dwo_unit = dwo_unit; | |
685af9cd | 7642 | dwarf2_section_info *section = dwo_unit->section; |
b0c7bfa9 | 7643 | dwarf2_read_section (objfile, section); |
a32a8923 | 7644 | abfd = get_section_bfd_owner (section); |
9c541725 PA |
7645 | begin_info_ptr = info_ptr = (section->buffer |
7646 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 7647 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
7648 | |
7649 | if (this_cu->is_debug_types) | |
7650 | { | |
b0c7bfa9 DE |
7651 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
7652 | ||
ed2dc618 SM |
7653 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7654 | &cu->header, section, | |
b0c7bfa9 | 7655 | dwo_abbrev_section, |
43988095 | 7656 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7657 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7658 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7659 | { |
7660 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 7661 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 7662 | hex_string (sig_type->signature), |
43988095 | 7663 | hex_string (cu->header.signature), |
9d8780f0 | 7664 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
7665 | bfd_get_filename (abfd)); |
7666 | } | |
9c541725 | 7667 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7668 | /* For DWOs coming from DWP files, we don't know the CU length |
7669 | nor the type's offset in the TU until now. */ | |
7670 | dwo_unit->length = get_cu_length (&cu->header); | |
9c541725 | 7671 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7672 | |
7673 | /* Establish the type offset that can be used to lookup the type. | |
7674 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7675 | sig_type->type_offset_in_section |
7676 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7677 | } |
7678 | else | |
7679 | { | |
ed2dc618 SM |
7680 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7681 | &cu->header, section, | |
b0c7bfa9 | 7682 | dwo_abbrev_section, |
43988095 | 7683 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 7684 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7685 | /* For DWOs coming from DWP files, we don't know the CU length |
7686 | until now. */ | |
7687 | dwo_unit->length = get_cu_length (&cu->header); | |
7688 | } | |
7689 | ||
685af9cd TT |
7690 | *result_dwo_abbrev_table |
7691 | = abbrev_table_read_table (dwarf2_per_objfile, dwo_abbrev_section, | |
7692 | cu->header.abbrev_sect_off); | |
7693 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, | |
7694 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
7695 | |
7696 | /* Read in the die, but leave space to copy over the attributes | |
7697 | from the stub. This has the benefit of simplifying the rest of | |
7698 | the code - all the work to maintain the illusion of a single | |
7699 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7700 | num_extra_attrs = ((stmt_list != NULL) | |
7701 | + (low_pc != NULL) | |
7702 | + (high_pc != NULL) | |
7703 | + (ranges != NULL) | |
7704 | + (comp_dir != NULL)); | |
7705 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
7706 | result_has_children, num_extra_attrs); | |
7707 | ||
7708 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7709 | comp_unit_die = *result_comp_unit_die; | |
7710 | i = comp_unit_die->num_attrs; | |
7711 | if (stmt_list != NULL) | |
7712 | comp_unit_die->attrs[i++] = *stmt_list; | |
7713 | if (low_pc != NULL) | |
7714 | comp_unit_die->attrs[i++] = *low_pc; | |
7715 | if (high_pc != NULL) | |
7716 | comp_unit_die->attrs[i++] = *high_pc; | |
7717 | if (ranges != NULL) | |
7718 | comp_unit_die->attrs[i++] = *ranges; | |
7719 | if (comp_dir != NULL) | |
7720 | comp_unit_die->attrs[i++] = *comp_dir; | |
7721 | comp_unit_die->num_attrs += num_extra_attrs; | |
7722 | ||
b4f54984 | 7723 | if (dwarf_die_debug) |
bf6af496 DE |
7724 | { |
7725 | fprintf_unfiltered (gdb_stdlog, | |
7726 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 7727 | get_section_name (section), |
bf6af496 DE |
7728 | (unsigned) (begin_info_ptr - section->buffer), |
7729 | bfd_get_filename (abfd)); | |
b4f54984 | 7730 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7731 | } |
7732 | ||
a2ce51a0 DE |
7733 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
7734 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
7735 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
7736 | to get it via circuitous means. Blech. */ | |
7737 | if (comp_dir != NULL) | |
7738 | result_reader->comp_dir = DW_STRING (comp_dir); | |
7739 | ||
b0c7bfa9 DE |
7740 | /* Skip dummy compilation units. */ |
7741 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7742 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7743 | return 0; | |
7744 | ||
7745 | *result_info_ptr = info_ptr; | |
7746 | return 1; | |
7747 | } | |
7748 | ||
7749 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
7750 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 7751 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7752 | |
7753 | static struct dwo_unit * | |
7754 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
7755 | struct die_info *comp_unit_die) | |
7756 | { | |
7757 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 DE |
7758 | ULONGEST signature; |
7759 | struct dwo_unit *dwo_unit; | |
7760 | const char *comp_dir, *dwo_name; | |
7761 | ||
a2ce51a0 DE |
7762 | gdb_assert (cu != NULL); |
7763 | ||
b0c7bfa9 | 7764 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
7d45c7c3 KB |
7765 | dwo_name = dwarf2_string_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
7766 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
b0c7bfa9 DE |
7767 | |
7768 | if (this_cu->is_debug_types) | |
7769 | { | |
7770 | struct signatured_type *sig_type; | |
7771 | ||
7772 | /* Since this_cu is the first member of struct signatured_type, | |
7773 | we can go from a pointer to one to a pointer to the other. */ | |
7774 | sig_type = (struct signatured_type *) this_cu; | |
7775 | signature = sig_type->signature; | |
7776 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
7777 | } | |
7778 | else | |
7779 | { | |
7780 | struct attribute *attr; | |
7781 | ||
7782 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
7783 | if (! attr) | |
7784 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
7785 | " [in module %s]"), | |
e3b94546 | 7786 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 DE |
7787 | signature = DW_UNSND (attr); |
7788 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
7789 | signature); | |
7790 | } | |
7791 | ||
b0c7bfa9 DE |
7792 | return dwo_unit; |
7793 | } | |
7794 | ||
a2ce51a0 | 7795 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 | 7796 | See it for a description of the parameters. |
fcd3b13d | 7797 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 DE |
7798 | |
7799 | static void | |
6aa5f3a6 DE |
7800 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
7801 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
7802 | die_reader_func_ftype *die_reader_func, |
7803 | void *data) | |
7804 | { | |
fcd3b13d | 7805 | std::unique_ptr<dwarf2_cu> new_cu; |
a2ce51a0 | 7806 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7807 | struct die_reader_specs reader; |
7808 | const gdb_byte *info_ptr; | |
7809 | struct die_info *comp_unit_die; | |
7810 | int has_children; | |
ed2dc618 | 7811 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
a2ce51a0 DE |
7812 | |
7813 | /* Verify we can do the following downcast, and that we have the | |
7814 | data we need. */ | |
7815 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7816 | sig_type = (struct signatured_type *) this_cu; | |
7817 | gdb_assert (sig_type->dwo_unit != NULL); | |
7818 | ||
6aa5f3a6 DE |
7819 | if (use_existing_cu && this_cu->cu != NULL) |
7820 | { | |
7821 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 DE |
7822 | /* There's no need to do the rereading_dwo_cu handling that |
7823 | init_cutu_and_read_dies does since we don't read the stub. */ | |
7824 | } | |
7825 | else | |
7826 | { | |
7827 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7828 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d | 7829 | new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
7830 | } |
7831 | ||
7832 | /* A future optimization, if needed, would be to use an existing | |
7833 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7834 | could share abbrev tables. */ | |
a2ce51a0 | 7835 | |
685af9cd TT |
7836 | /* The abbreviation table used by READER, this must live at least as long as |
7837 | READER. */ | |
7838 | abbrev_table_up dwo_abbrev_table; | |
7839 | ||
a2ce51a0 | 7840 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7841 | NULL /* stub_comp_unit_die */, |
7842 | sig_type->dwo_unit->dwo_file->comp_dir, | |
7843 | &reader, &info_ptr, | |
685af9cd TT |
7844 | &comp_unit_die, &has_children, |
7845 | &dwo_abbrev_table) == 0) | |
a2ce51a0 DE |
7846 | { |
7847 | /* Dummy die. */ | |
a2ce51a0 DE |
7848 | return; |
7849 | } | |
7850 | ||
7851 | /* All the "real" work is done here. */ | |
7852 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
7853 | ||
6aa5f3a6 | 7854 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
7855 | but the alternative is making the latter more complex. |
7856 | This function is only for the special case of using DWO files directly: | |
7857 | no point in overly complicating the general case just to handle this. */ | |
fcd3b13d | 7858 | if (new_cu != NULL && keep) |
a2ce51a0 | 7859 | { |
fcd3b13d SM |
7860 | /* Link this CU into read_in_chain. */ |
7861 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7862 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7863 | /* The chain owns it now. */ | |
7864 | new_cu.release (); | |
a2ce51a0 | 7865 | } |
a2ce51a0 DE |
7866 | } |
7867 | ||
fd820528 | 7868 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7869 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7870 | |
f4dc4d17 DE |
7871 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7872 | Otherwise the table specified in the comp unit header is read in and used. | |
7873 | This is an optimization for when we already have the abbrev table. | |
7874 | ||
dee91e82 DE |
7875 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
7876 | Otherwise, a new CU is allocated with xmalloc. | |
7877 | ||
7878 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
7879 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
7880 | ||
7881 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 7882 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 7883 | |
70221824 | 7884 | static void |
fd820528 | 7885 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 7886 | struct abbrev_table *abbrev_table, |
fd820528 DE |
7887 | int use_existing_cu, int keep, |
7888 | die_reader_func_ftype *die_reader_func, | |
7889 | void *data) | |
c906108c | 7890 | { |
ed2dc618 | 7891 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7892 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7893 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7894 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 7895 | struct dwarf2_cu *cu; |
d521ce57 | 7896 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7897 | struct die_reader_specs reader; |
d85a05f0 | 7898 | struct die_info *comp_unit_die; |
dee91e82 | 7899 | int has_children; |
d85a05f0 | 7900 | struct attribute *attr; |
dee91e82 | 7901 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7902 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7903 | /* Non-zero if CU currently points to a DWO file and we need to |
7904 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7905 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7906 | int rereading_dwo_cu = 0; |
c906108c | 7907 | |
b4f54984 | 7908 | if (dwarf_die_debug) |
9d8780f0 | 7909 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7910 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7911 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7912 | |
dee91e82 DE |
7913 | if (use_existing_cu) |
7914 | gdb_assert (keep); | |
23745b47 | 7915 | |
a2ce51a0 DE |
7916 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7917 | file (instead of going through the stub), short-circuit all of this. */ | |
7918 | if (this_cu->reading_dwo_directly) | |
7919 | { | |
7920 | /* Narrow down the scope of possibilities to have to understand. */ | |
7921 | gdb_assert (this_cu->is_debug_types); | |
7922 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
7923 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
7924 | die_reader_func, data); | |
a2ce51a0 DE |
7925 | return; |
7926 | } | |
7927 | ||
dee91e82 DE |
7928 | /* This is cheap if the section is already read in. */ |
7929 | dwarf2_read_section (objfile, section); | |
7930 | ||
9c541725 | 7931 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7932 | |
7933 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7934 | |
fcd3b13d | 7935 | std::unique_ptr<dwarf2_cu> new_cu; |
dee91e82 DE |
7936 | if (use_existing_cu && this_cu->cu != NULL) |
7937 | { | |
7938 | cu = this_cu->cu; | |
42e7ad6c DE |
7939 | /* If this CU is from a DWO file we need to start over, we need to |
7940 | refetch the attributes from the skeleton CU. | |
7941 | This could be optimized by retrieving those attributes from when we | |
7942 | were here the first time: the previous comp_unit_die was stored in | |
7943 | comp_unit_obstack. But there's no data yet that we need this | |
7944 | optimization. */ | |
7945 | if (cu->dwo_unit != NULL) | |
7946 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7947 | } |
7948 | else | |
7949 | { | |
7950 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7951 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d SM |
7952 | new_cu.reset (new dwarf2_cu (this_cu)); |
7953 | cu = new_cu.get (); | |
42e7ad6c | 7954 | } |
dee91e82 | 7955 | |
b0c7bfa9 | 7956 | /* Get the header. */ |
9c541725 | 7957 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7958 | { |
7959 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7960 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7961 | } |
7962 | else | |
7963 | { | |
3019eac3 | 7964 | if (this_cu->is_debug_types) |
dee91e82 | 7965 | { |
ed2dc618 SM |
7966 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7967 | &cu->header, section, | |
4bdcc0c1 | 7968 | abbrev_section, info_ptr, |
43988095 | 7969 | rcuh_kind::TYPE); |
dee91e82 | 7970 | |
42e7ad6c DE |
7971 | /* Since per_cu is the first member of struct signatured_type, |
7972 | we can go from a pointer to one to a pointer to the other. */ | |
7973 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7974 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7975 | gdb_assert (sig_type->type_offset_in_tu |
7976 | == cu->header.type_cu_offset_in_tu); | |
7977 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7978 | |
42e7ad6c DE |
7979 | /* LENGTH has not been set yet for type units if we're |
7980 | using .gdb_index. */ | |
1ce1cefd | 7981 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
7982 | |
7983 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7984 | sig_type->type_offset_in_section = |
7985 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7986 | |
7987 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7988 | } |
7989 | else | |
7990 | { | |
ed2dc618 SM |
7991 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7992 | &cu->header, section, | |
4bdcc0c1 | 7993 | abbrev_section, |
43988095 JK |
7994 | info_ptr, |
7995 | rcuh_kind::COMPILE); | |
dee91e82 | 7996 | |
9c541725 | 7997 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
1ce1cefd | 7998 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 7999 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
8000 | } |
8001 | } | |
10b3939b | 8002 | |
6caca83c | 8003 | /* Skip dummy compilation units. */ |
dee91e82 | 8004 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 8005 | || peek_abbrev_code (abfd, info_ptr) == 0) |
fcd3b13d | 8006 | return; |
6caca83c | 8007 | |
433df2d4 DE |
8008 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
8009 | And if we need to read them now, make sure they're freed when we're | |
685af9cd TT |
8010 | done (own the table through ABBREV_TABLE_HOLDER). */ |
8011 | abbrev_table_up abbrev_table_holder; | |
f4dc4d17 | 8012 | if (abbrev_table != NULL) |
685af9cd TT |
8013 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
8014 | else | |
f4dc4d17 | 8015 | { |
685af9cd TT |
8016 | abbrev_table_holder |
8017 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
8018 | cu->header.abbrev_sect_off); | |
8019 | abbrev_table = abbrev_table_holder.get (); | |
42e7ad6c | 8020 | } |
af703f96 | 8021 | |
dee91e82 | 8022 | /* Read the top level CU/TU die. */ |
685af9cd | 8023 | init_cu_die_reader (&reader, cu, section, NULL, abbrev_table); |
dee91e82 | 8024 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 8025 | |
b0c7bfa9 | 8026 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
8027 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
8028 | table from the DWO file and pass the ownership over to us. It will be | |
8029 | referenced from READER, so we must make sure to free it after we're done | |
8030 | with READER. | |
8031 | ||
b0c7bfa9 DE |
8032 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
8033 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 | 8034 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
685af9cd | 8035 | abbrev_table_up dwo_abbrev_table; |
3019eac3 DE |
8036 | if (attr) |
8037 | { | |
3019eac3 | 8038 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 8039 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
8040 | |
8041 | if (has_children) | |
6a506a2d DE |
8042 | { |
8043 | complaint (&symfile_complaints, | |
8044 | _("compilation unit with DW_AT_GNU_dwo_name" | |
9d8780f0 SM |
8045 | " has children (offset %s) [in module %s]"), |
8046 | sect_offset_str (this_cu->sect_off), | |
8047 | bfd_get_filename (abfd)); | |
6a506a2d | 8048 | } |
b0c7bfa9 | 8049 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 8050 | if (dwo_unit != NULL) |
3019eac3 | 8051 | { |
6a506a2d | 8052 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 8053 | comp_unit_die, NULL, |
6a506a2d | 8054 | &reader, &info_ptr, |
685af9cd TT |
8055 | &dwo_comp_unit_die, &has_children, |
8056 | &dwo_abbrev_table) == 0) | |
6a506a2d DE |
8057 | { |
8058 | /* Dummy die. */ | |
6a506a2d DE |
8059 | return; |
8060 | } | |
8061 | comp_unit_die = dwo_comp_unit_die; | |
8062 | } | |
8063 | else | |
8064 | { | |
8065 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
8066 | the stub. A complaint has already been logged. There's | |
8067 | not much more we can do except pass on the stub DIE to | |
8068 | die_reader_func. We don't want to throw an error on bad | |
8069 | debug info. */ | |
3019eac3 DE |
8070 | } |
8071 | } | |
8072 | ||
b0c7bfa9 | 8073 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
8074 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
8075 | ||
b0c7bfa9 | 8076 | /* Done, clean up. */ |
fcd3b13d | 8077 | if (new_cu != NULL && keep) |
348e048f | 8078 | { |
fcd3b13d SM |
8079 | /* Link this CU into read_in_chain. */ |
8080 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
8081 | dwarf2_per_objfile->read_in_chain = this_cu; | |
8082 | /* The chain owns it now. */ | |
8083 | new_cu.release (); | |
348e048f | 8084 | } |
dee91e82 DE |
8085 | } |
8086 | ||
33e80786 DE |
8087 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
8088 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
8089 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
8090 | |
8091 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 8092 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
8093 | |
8094 | We fill in THIS_CU->length. | |
8095 | ||
8096 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
8097 | linker) then DIE_READER_FUNC will not get called. | |
8098 | ||
8099 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
8100 | This is done in order to not leave THIS_CU->cu in a state where we have |
8101 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
8102 | |
8103 | static void | |
8104 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 8105 | struct dwo_file *dwo_file, |
dee91e82 DE |
8106 | die_reader_func_ftype *die_reader_func, |
8107 | void *data) | |
8108 | { | |
ed2dc618 | 8109 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 8110 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 8111 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 8112 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 8113 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 8114 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 8115 | struct die_reader_specs reader; |
dee91e82 DE |
8116 | struct die_info *comp_unit_die; |
8117 | int has_children; | |
8118 | ||
b4f54984 | 8119 | if (dwarf_die_debug) |
9d8780f0 | 8120 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 8121 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 8122 | sect_offset_str (this_cu->sect_off)); |
09406207 | 8123 | |
dee91e82 DE |
8124 | gdb_assert (this_cu->cu == NULL); |
8125 | ||
33e80786 DE |
8126 | abbrev_section = (dwo_file != NULL |
8127 | ? &dwo_file->sections.abbrev | |
8128 | : get_abbrev_section_for_cu (this_cu)); | |
8129 | ||
dee91e82 DE |
8130 | /* This is cheap if the section is already read in. */ |
8131 | dwarf2_read_section (objfile, section); | |
8132 | ||
fcd3b13d | 8133 | struct dwarf2_cu cu (this_cu); |
dee91e82 | 8134 | |
9c541725 | 8135 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 SM |
8136 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
8137 | &cu.header, section, | |
4bdcc0c1 | 8138 | abbrev_section, info_ptr, |
43988095 JK |
8139 | (this_cu->is_debug_types |
8140 | ? rcuh_kind::TYPE | |
8141 | : rcuh_kind::COMPILE)); | |
dee91e82 | 8142 | |
1ce1cefd | 8143 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
8144 | |
8145 | /* Skip dummy compilation units. */ | |
8146 | if (info_ptr >= begin_info_ptr + this_cu->length | |
8147 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
fcd3b13d | 8148 | return; |
72bf9492 | 8149 | |
685af9cd TT |
8150 | abbrev_table_up abbrev_table |
8151 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
8152 | cu.header.abbrev_sect_off); | |
dee91e82 | 8153 | |
685af9cd | 8154 | init_cu_die_reader (&reader, &cu, section, dwo_file, abbrev_table.get ()); |
dee91e82 DE |
8155 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
8156 | ||
8157 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
dee91e82 DE |
8158 | } |
8159 | ||
3019eac3 DE |
8160 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
8161 | does not lookup the specified DWO file. | |
8162 | This cannot be used to read DWO files. | |
dee91e82 DE |
8163 | |
8164 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
8165 | This is done in order to not leave THIS_CU->cu in a state where we have |
8166 | to care whether it refers to the "main" CU or the DWO CU. | |
8167 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
8168 | |
8169 | static void | |
8170 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
8171 | die_reader_func_ftype *die_reader_func, | |
8172 | void *data) | |
8173 | { | |
33e80786 | 8174 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 8175 | } |
0018ea6f DE |
8176 | \f |
8177 | /* Type Unit Groups. | |
dee91e82 | 8178 | |
0018ea6f DE |
8179 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
8180 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
8181 | so that all types coming from the same compilation (.o file) are grouped | |
8182 | together. A future step could be to put the types in the same symtab as | |
8183 | the CU the types ultimately came from. */ | |
ff013f42 | 8184 | |
f4dc4d17 DE |
8185 | static hashval_t |
8186 | hash_type_unit_group (const void *item) | |
8187 | { | |
9a3c8263 SM |
8188 | const struct type_unit_group *tu_group |
8189 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 8190 | |
094b34ac | 8191 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 8192 | } |
348e048f DE |
8193 | |
8194 | static int | |
f4dc4d17 | 8195 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 8196 | { |
9a3c8263 SM |
8197 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
8198 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 8199 | |
094b34ac | 8200 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 8201 | } |
348e048f | 8202 | |
f4dc4d17 DE |
8203 | /* Allocate a hash table for type unit groups. */ |
8204 | ||
8205 | static htab_t | |
ed2dc618 | 8206 | allocate_type_unit_groups_table (struct objfile *objfile) |
f4dc4d17 DE |
8207 | { |
8208 | return htab_create_alloc_ex (3, | |
8209 | hash_type_unit_group, | |
8210 | eq_type_unit_group, | |
8211 | NULL, | |
ed2dc618 | 8212 | &objfile->objfile_obstack, |
f4dc4d17 DE |
8213 | hashtab_obstack_allocate, |
8214 | dummy_obstack_deallocate); | |
8215 | } | |
dee91e82 | 8216 | |
f4dc4d17 DE |
8217 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
8218 | partial symtabs. We combine several TUs per psymtab to not let the size | |
8219 | of any one psymtab grow too big. */ | |
8220 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
8221 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 8222 | |
094b34ac | 8223 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
8224 | Create the type_unit_group object used to hold one or more TUs. */ |
8225 | ||
8226 | static struct type_unit_group * | |
094b34ac | 8227 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 8228 | { |
518817b3 SM |
8229 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8230 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 8231 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 8232 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 8233 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
8234 | |
8235 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
8236 | struct type_unit_group); | |
094b34ac | 8237 | per_cu = &tu_group->per_cu; |
518817b3 | 8238 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 8239 | |
094b34ac DE |
8240 | if (dwarf2_per_objfile->using_index) |
8241 | { | |
8242 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
8243 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
8244 | } |
8245 | else | |
8246 | { | |
9c541725 | 8247 | unsigned int line_offset = to_underlying (line_offset_struct); |
094b34ac DE |
8248 | struct partial_symtab *pst; |
8249 | char *name; | |
8250 | ||
8251 | /* Give the symtab a useful name for debug purposes. */ | |
8252 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
8253 | name = xstrprintf ("<type_units_%d>", | |
8254 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
8255 | else | |
8256 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
8257 | ||
8258 | pst = create_partial_symtab (per_cu, name); | |
8259 | pst->anonymous = 1; | |
f4dc4d17 | 8260 | |
094b34ac DE |
8261 | xfree (name); |
8262 | } | |
f4dc4d17 | 8263 | |
094b34ac | 8264 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 8265 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
8266 | |
8267 | return tu_group; | |
8268 | } | |
8269 | ||
094b34ac DE |
8270 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
8271 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
8272 | |
8273 | static struct type_unit_group * | |
ff39bb5e | 8274 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 8275 | { |
518817b3 SM |
8276 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8277 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
8278 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
8279 | struct type_unit_group *tu_group; | |
8280 | void **slot; | |
8281 | unsigned int line_offset; | |
8282 | struct type_unit_group type_unit_group_for_lookup; | |
8283 | ||
8284 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
8285 | { | |
8286 | dwarf2_per_objfile->type_unit_groups = | |
ed2dc618 | 8287 | allocate_type_unit_groups_table (dwarf2_per_objfile->objfile); |
f4dc4d17 DE |
8288 | } |
8289 | ||
8290 | /* Do we need to create a new group, or can we use an existing one? */ | |
8291 | ||
8292 | if (stmt_list) | |
8293 | { | |
8294 | line_offset = DW_UNSND (stmt_list); | |
8295 | ++tu_stats->nr_symtab_sharers; | |
8296 | } | |
8297 | else | |
8298 | { | |
8299 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
8300 | We can do various things here like create one group per TU or | |
8301 | spread them over multiple groups to split up the expansion work. | |
8302 | To avoid worst case scenarios (too many groups or too large groups) | |
8303 | we, umm, group them in bunches. */ | |
8304 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
8305 | | (tu_stats->nr_stmt_less_type_units | |
8306 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
8307 | ++tu_stats->nr_stmt_less_type_units; | |
8308 | } | |
8309 | ||
094b34ac | 8310 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 8311 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
f4dc4d17 DE |
8312 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
8313 | &type_unit_group_for_lookup, INSERT); | |
8314 | if (*slot != NULL) | |
8315 | { | |
9a3c8263 | 8316 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
8317 | gdb_assert (tu_group != NULL); |
8318 | } | |
8319 | else | |
8320 | { | |
9c541725 | 8321 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 8322 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
8323 | *slot = tu_group; |
8324 | ++tu_stats->nr_symtabs; | |
8325 | } | |
8326 | ||
8327 | return tu_group; | |
8328 | } | |
0018ea6f DE |
8329 | \f |
8330 | /* Partial symbol tables. */ | |
8331 | ||
8332 | /* Create a psymtab named NAME and assign it to PER_CU. | |
8333 | ||
8334 | The caller must fill in the following details: | |
8335 | dirname, textlow, texthigh. */ | |
8336 | ||
8337 | static struct partial_symtab * | |
8338 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
8339 | { | |
e3b94546 | 8340 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
0018ea6f DE |
8341 | struct partial_symtab *pst; |
8342 | ||
18a94d75 | 8343 | pst = start_psymtab_common (objfile, name, 0, |
af5bf4ad SM |
8344 | objfile->global_psymbols, |
8345 | objfile->static_psymbols); | |
0018ea6f DE |
8346 | |
8347 | pst->psymtabs_addrmap_supported = 1; | |
8348 | ||
8349 | /* This is the glue that links PST into GDB's symbol API. */ | |
8350 | pst->read_symtab_private = per_cu; | |
8351 | pst->read_symtab = dwarf2_read_symtab; | |
8352 | per_cu->v.psymtab = pst; | |
8353 | ||
8354 | return pst; | |
8355 | } | |
8356 | ||
b93601f3 TT |
8357 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
8358 | type. */ | |
8359 | ||
8360 | struct process_psymtab_comp_unit_data | |
8361 | { | |
8362 | /* True if we are reading a DW_TAG_partial_unit. */ | |
8363 | ||
8364 | int want_partial_unit; | |
8365 | ||
8366 | /* The "pretend" language that is used if the CU doesn't declare a | |
8367 | language. */ | |
8368 | ||
8369 | enum language pretend_language; | |
8370 | }; | |
8371 | ||
0018ea6f DE |
8372 | /* die_reader_func for process_psymtab_comp_unit. */ |
8373 | ||
8374 | static void | |
8375 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8376 | const gdb_byte *info_ptr, |
0018ea6f DE |
8377 | struct die_info *comp_unit_die, |
8378 | int has_children, | |
8379 | void *data) | |
8380 | { | |
8381 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 8382 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 8383 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 8384 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
8385 | CORE_ADDR baseaddr; |
8386 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
8387 | struct partial_symtab *pst; | |
3a2b436a | 8388 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 8389 | const char *filename; |
9a3c8263 SM |
8390 | struct process_psymtab_comp_unit_data *info |
8391 | = (struct process_psymtab_comp_unit_data *) data; | |
0018ea6f | 8392 | |
b93601f3 | 8393 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
8394 | return; |
8395 | ||
8396 | gdb_assert (! per_cu->is_debug_types); | |
8397 | ||
b93601f3 | 8398 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f DE |
8399 | |
8400 | cu->list_in_scope = &file_symbols; | |
8401 | ||
8402 | /* Allocate a new partial symbol table structure. */ | |
7d45c7c3 KB |
8403 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
8404 | if (filename == NULL) | |
0018ea6f | 8405 | filename = ""; |
0018ea6f DE |
8406 | |
8407 | pst = create_partial_symtab (per_cu, filename); | |
8408 | ||
8409 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 8410 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f DE |
8411 | |
8412 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
8413 | ||
8414 | dwarf2_find_base_address (comp_unit_die, cu); | |
8415 | ||
8416 | /* Possibly set the default values of LOWPC and HIGHPC from | |
8417 | `DW_AT_ranges'. */ | |
3a2b436a JK |
8418 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
8419 | &best_highpc, cu, pst); | |
8420 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
0018ea6f DE |
8421 | /* Store the contiguous range if it is not empty; it can be empty for |
8422 | CUs with no code. */ | |
8423 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
3e29f34a MR |
8424 | gdbarch_adjust_dwarf2_addr (gdbarch, |
8425 | best_lowpc + baseaddr), | |
8426 | gdbarch_adjust_dwarf2_addr (gdbarch, | |
8427 | best_highpc + baseaddr) - 1, | |
8428 | pst); | |
0018ea6f DE |
8429 | |
8430 | /* Check if comp unit has_children. | |
8431 | If so, read the rest of the partial symbols from this comp unit. | |
8432 | If not, there's no more debug_info for this comp unit. */ | |
8433 | if (has_children) | |
8434 | { | |
8435 | struct partial_die_info *first_die; | |
8436 | CORE_ADDR lowpc, highpc; | |
8437 | ||
8438 | lowpc = ((CORE_ADDR) -1); | |
8439 | highpc = ((CORE_ADDR) 0); | |
8440 | ||
8441 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8442 | ||
8443 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 8444 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
8445 | |
8446 | /* If we didn't find a lowpc, set it to highpc to avoid | |
8447 | complaints from `maint check'. */ | |
8448 | if (lowpc == ((CORE_ADDR) -1)) | |
8449 | lowpc = highpc; | |
8450 | ||
8451 | /* If the compilation unit didn't have an explicit address range, | |
8452 | then use the information extracted from its child dies. */ | |
e385593e | 8453 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
8454 | { |
8455 | best_lowpc = lowpc; | |
8456 | best_highpc = highpc; | |
8457 | } | |
8458 | } | |
3e29f34a MR |
8459 | pst->textlow = gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr); |
8460 | pst->texthigh = gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr); | |
0018ea6f | 8461 | |
8763cede | 8462 | end_psymtab_common (objfile, pst); |
0018ea6f DE |
8463 | |
8464 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
8465 | { | |
8466 | int i; | |
8467 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8468 | struct dwarf2_per_cu_data *iter; | |
8469 | ||
8470 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
8471 | post-pass. */ | |
8472 | pst->number_of_dependencies = len; | |
8d749320 SM |
8473 | pst->dependencies = |
8474 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
0018ea6f DE |
8475 | for (i = 0; |
8476 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
8477 | i, iter); | |
8478 | ++i) | |
8479 | pst->dependencies[i] = iter->v.psymtab; | |
8480 | ||
8481 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8482 | } | |
8483 | ||
8484 | /* Get the list of files included in the current compilation unit, | |
8485 | and build a psymtab for each of them. */ | |
8486 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
8487 | ||
b4f54984 | 8488 | if (dwarf_read_debug) |
0018ea6f DE |
8489 | { |
8490 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8491 | ||
8492 | fprintf_unfiltered (gdb_stdlog, | |
9d8780f0 | 8493 | "Psymtab for %s unit @%s: %s - %s" |
0018ea6f DE |
8494 | ", %d global, %d static syms\n", |
8495 | per_cu->is_debug_types ? "type" : "comp", | |
9d8780f0 | 8496 | sect_offset_str (per_cu->sect_off), |
0018ea6f DE |
8497 | paddress (gdbarch, pst->textlow), |
8498 | paddress (gdbarch, pst->texthigh), | |
8499 | pst->n_global_syms, pst->n_static_syms); | |
8500 | } | |
8501 | } | |
8502 | ||
8503 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8504 | Process compilation unit THIS_CU for a psymtab. */ | |
8505 | ||
8506 | static void | |
8507 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
8508 | int want_partial_unit, |
8509 | enum language pretend_language) | |
0018ea6f DE |
8510 | { |
8511 | /* If this compilation unit was already read in, free the | |
8512 | cached copy in order to read it in again. This is | |
8513 | necessary because we skipped some symbols when we first | |
8514 | read in the compilation unit (see load_partial_dies). | |
8515 | This problem could be avoided, but the benefit is unclear. */ | |
8516 | if (this_cu->cu != NULL) | |
8517 | free_one_cached_comp_unit (this_cu); | |
8518 | ||
f1902523 JK |
8519 | if (this_cu->is_debug_types) |
8520 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, build_type_psymtabs_reader, | |
8521 | NULL); | |
8522 | else | |
8523 | { | |
8524 | process_psymtab_comp_unit_data info; | |
8525 | info.want_partial_unit = want_partial_unit; | |
8526 | info.pretend_language = pretend_language; | |
8527 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, | |
8528 | process_psymtab_comp_unit_reader, &info); | |
8529 | } | |
0018ea6f DE |
8530 | |
8531 | /* Age out any secondary CUs. */ | |
ed2dc618 | 8532 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 8533 | } |
f4dc4d17 DE |
8534 | |
8535 | /* Reader function for build_type_psymtabs. */ | |
8536 | ||
8537 | static void | |
8538 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8539 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
8540 | struct die_info *type_unit_die, |
8541 | int has_children, | |
8542 | void *data) | |
8543 | { | |
ed2dc618 | 8544 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 8545 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
8546 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8547 | struct dwarf2_cu *cu = reader->cu; | |
8548 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 8549 | struct signatured_type *sig_type; |
f4dc4d17 DE |
8550 | struct type_unit_group *tu_group; |
8551 | struct attribute *attr; | |
8552 | struct partial_die_info *first_die; | |
8553 | CORE_ADDR lowpc, highpc; | |
8554 | struct partial_symtab *pst; | |
8555 | ||
8556 | gdb_assert (data == NULL); | |
0186c6a7 DE |
8557 | gdb_assert (per_cu->is_debug_types); |
8558 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8559 | |
8560 | if (! has_children) | |
8561 | return; | |
8562 | ||
8563 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 8564 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 8565 | |
0186c6a7 | 8566 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
8567 | |
8568 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
8569 | cu->list_in_scope = &file_symbols; | |
8570 | pst = create_partial_symtab (per_cu, ""); | |
8571 | pst->anonymous = 1; | |
8572 | ||
8573 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8574 | ||
8575 | lowpc = (CORE_ADDR) -1; | |
8576 | highpc = (CORE_ADDR) 0; | |
8577 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
8578 | ||
8763cede | 8579 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
8580 | } |
8581 | ||
73051182 DE |
8582 | /* Struct used to sort TUs by their abbreviation table offset. */ |
8583 | ||
8584 | struct tu_abbrev_offset | |
8585 | { | |
8586 | struct signatured_type *sig_type; | |
8587 | sect_offset abbrev_offset; | |
8588 | }; | |
8589 | ||
484cf504 | 8590 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 8591 | |
484cf504 TT |
8592 | static bool |
8593 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
8594 | const struct tu_abbrev_offset &b) | |
73051182 | 8595 | { |
484cf504 | 8596 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
8597 | } |
8598 | ||
8599 | /* Efficiently read all the type units. | |
8600 | This does the bulk of the work for build_type_psymtabs. | |
8601 | ||
8602 | The efficiency is because we sort TUs by the abbrev table they use and | |
8603 | only read each abbrev table once. In one program there are 200K TUs | |
8604 | sharing 8K abbrev tables. | |
8605 | ||
8606 | The main purpose of this function is to support building the | |
8607 | dwarf2_per_objfile->type_unit_groups table. | |
8608 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
8609 | can collapse the search space by grouping them by stmt_list. | |
8610 | The savings can be significant, in the same program from above the 200K TUs | |
8611 | share 8K stmt_list tables. | |
8612 | ||
8613 | FUNC is expected to call get_type_unit_group, which will create the | |
8614 | struct type_unit_group if necessary and add it to | |
8615 | dwarf2_per_objfile->type_unit_groups. */ | |
8616 | ||
8617 | static void | |
ed2dc618 | 8618 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 8619 | { |
73051182 | 8620 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 8621 | abbrev_table_up abbrev_table; |
73051182 | 8622 | sect_offset abbrev_offset; |
73051182 DE |
8623 | int i; |
8624 | ||
8625 | /* It's up to the caller to not call us multiple times. */ | |
8626 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
8627 | ||
8628 | if (dwarf2_per_objfile->n_type_units == 0) | |
8629 | return; | |
8630 | ||
8631 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
8632 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
8633 | read each abbrev table in. | |
8634 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
8635 | This is simpler and efficient enough for now. | |
8636 | ||
8637 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
8638 | symtab to use). Typically TUs with the same abbrev offset have the same | |
8639 | stmt_list value too so in practice this should work well. | |
8640 | ||
8641 | The basic algorithm here is: | |
8642 | ||
8643 | sort TUs by abbrev table | |
8644 | for each TU with same abbrev table: | |
8645 | read abbrev table if first user | |
8646 | read TU top level DIE | |
8647 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
8648 | call FUNC */ | |
8649 | ||
b4f54984 | 8650 | if (dwarf_read_debug) |
73051182 DE |
8651 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
8652 | ||
8653 | /* Sort in a separate table to maintain the order of all_type_units | |
8654 | for .gdb_index: TU indices directly index all_type_units. */ | |
484cf504 TT |
8655 | std::vector<struct tu_abbrev_offset> sorted_by_abbrev |
8656 | (dwarf2_per_objfile->n_type_units); | |
73051182 DE |
8657 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) |
8658 | { | |
8659 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
8660 | ||
8661 | sorted_by_abbrev[i].sig_type = sig_type; | |
8662 | sorted_by_abbrev[i].abbrev_offset = | |
ed2dc618 SM |
8663 | read_abbrev_offset (dwarf2_per_objfile, |
8664 | sig_type->per_cu.section, | |
9c541725 | 8665 | sig_type->per_cu.sect_off); |
73051182 | 8666 | } |
484cf504 TT |
8667 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
8668 | sort_tu_by_abbrev_offset); | |
73051182 | 8669 | |
9c541725 | 8670 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 DE |
8671 | |
8672 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
8673 | { | |
8674 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
8675 | ||
8676 | /* Switch to the next abbrev table if necessary. */ | |
8677 | if (abbrev_table == NULL | |
9c541725 | 8678 | || tu->abbrev_offset != abbrev_offset) |
73051182 | 8679 | { |
73051182 DE |
8680 | abbrev_offset = tu->abbrev_offset; |
8681 | abbrev_table = | |
ed2dc618 SM |
8682 | abbrev_table_read_table (dwarf2_per_objfile, |
8683 | &dwarf2_per_objfile->abbrev, | |
73051182 DE |
8684 | abbrev_offset); |
8685 | ++tu_stats->nr_uniq_abbrev_tables; | |
8686 | } | |
8687 | ||
685af9cd TT |
8688 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table.get (), |
8689 | 0, 0, build_type_psymtabs_reader, NULL); | |
73051182 | 8690 | } |
6aa5f3a6 | 8691 | } |
73051182 | 8692 | |
6aa5f3a6 DE |
8693 | /* Print collected type unit statistics. */ |
8694 | ||
8695 | static void | |
ed2dc618 | 8696 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8697 | { |
8698 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
8699 | ||
8700 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
8701 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
8702 | dwarf2_per_objfile->n_type_units); | |
8703 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
8704 | tu_stats->nr_uniq_abbrev_tables); | |
8705 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
8706 | tu_stats->nr_symtabs); | |
8707 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
8708 | tu_stats->nr_symtab_sharers); | |
8709 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
8710 | tu_stats->nr_stmt_less_type_units); | |
8711 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
8712 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
8713 | } |
8714 | ||
f4dc4d17 DE |
8715 | /* Traversal function for build_type_psymtabs. */ |
8716 | ||
8717 | static int | |
8718 | build_type_psymtab_dependencies (void **slot, void *info) | |
8719 | { | |
ed2dc618 SM |
8720 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8721 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
8722 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8723 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 8724 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 8725 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
8726 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
8727 | struct signatured_type *iter; | |
f4dc4d17 DE |
8728 | int i; |
8729 | ||
8730 | gdb_assert (len > 0); | |
0186c6a7 | 8731 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
8732 | |
8733 | pst->number_of_dependencies = len; | |
8d749320 SM |
8734 | pst->dependencies = |
8735 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
f4dc4d17 | 8736 | for (i = 0; |
0186c6a7 | 8737 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
8738 | ++i) |
8739 | { | |
0186c6a7 DE |
8740 | gdb_assert (iter->per_cu.is_debug_types); |
8741 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8742 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8743 | } |
8744 | ||
0186c6a7 | 8745 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
8746 | |
8747 | return 1; | |
8748 | } | |
8749 | ||
8750 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8751 | Build partial symbol tables for the .debug_types comp-units. */ | |
8752 | ||
8753 | static void | |
ed2dc618 | 8754 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 8755 | { |
ed2dc618 | 8756 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
8757 | return; |
8758 | ||
ed2dc618 | 8759 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 8760 | } |
f4dc4d17 | 8761 | |
6aa5f3a6 DE |
8762 | /* Traversal function for process_skeletonless_type_unit. |
8763 | Read a TU in a DWO file and build partial symbols for it. */ | |
8764 | ||
8765 | static int | |
8766 | process_skeletonless_type_unit (void **slot, void *info) | |
8767 | { | |
8768 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
8769 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8770 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
8771 | struct signatured_type find_entry, *entry; |
8772 | ||
8773 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8774 | ||
8775 | if (dwarf2_per_objfile->signatured_types == NULL) | |
8776 | { | |
8777 | dwarf2_per_objfile->signatured_types | |
ed2dc618 | 8778 | = allocate_signatured_type_table (dwarf2_per_objfile->objfile); |
6aa5f3a6 DE |
8779 | } |
8780 | ||
8781 | find_entry.signature = dwo_unit->signature; | |
8782 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
8783 | INSERT); | |
8784 | /* If we've already seen this type there's nothing to do. What's happening | |
8785 | is we're doing our own version of comdat-folding here. */ | |
8786 | if (*slot != NULL) | |
8787 | return 1; | |
8788 | ||
8789 | /* This does the job that create_all_type_units would have done for | |
8790 | this TU. */ | |
ed2dc618 SM |
8791 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
8792 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8793 | *slot = entry; |
8794 | ||
8795 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
8796 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, | |
8797 | build_type_psymtabs_reader, NULL); | |
8798 | ||
8799 | return 1; | |
8800 | } | |
8801 | ||
8802 | /* Traversal function for process_skeletonless_type_units. */ | |
8803 | ||
8804 | static int | |
8805 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8806 | { | |
8807 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8808 | ||
8809 | if (dwo_file->tus != NULL) | |
8810 | { | |
8811 | htab_traverse_noresize (dwo_file->tus, | |
8812 | process_skeletonless_type_unit, info); | |
8813 | } | |
8814 | ||
8815 | return 1; | |
8816 | } | |
8817 | ||
8818 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8819 | This is needed in case a TU was emitted without its skeleton. | |
8820 | Note: This can't be done until we know what all the DWO files are. */ | |
8821 | ||
8822 | static void | |
ed2dc618 | 8823 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8824 | { |
8825 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 8826 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
8827 | && dwarf2_per_objfile->dwo_files != NULL) |
8828 | { | |
8829 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files, | |
8830 | process_dwo_file_for_skeletonless_type_units, | |
ed2dc618 | 8831 | dwarf2_per_objfile); |
6aa5f3a6 | 8832 | } |
348e048f DE |
8833 | } |
8834 | ||
ed2dc618 | 8835 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8836 | |
8837 | static void | |
ed2dc618 | 8838 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad TT |
8839 | { |
8840 | int i; | |
8841 | ||
8842 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
8843 | { | |
ed2dc618 | 8844 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
95554aad TT |
8845 | struct partial_symtab *pst = per_cu->v.psymtab; |
8846 | int j; | |
8847 | ||
36586728 TT |
8848 | if (pst == NULL) |
8849 | continue; | |
8850 | ||
95554aad TT |
8851 | for (j = 0; j < pst->number_of_dependencies; ++j) |
8852 | { | |
8853 | /* Set the 'user' field only if it is not already set. */ | |
8854 | if (pst->dependencies[j]->user == NULL) | |
8855 | pst->dependencies[j]->user = pst; | |
8856 | } | |
8857 | } | |
8858 | } | |
8859 | ||
93311388 DE |
8860 | /* Build the partial symbol table by doing a quick pass through the |
8861 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8862 | |
93311388 | 8863 | static void |
ed2dc618 | 8864 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 8865 | { |
791afaa2 | 8866 | struct cleanup *back_to; |
21b2bd31 | 8867 | int i; |
ed2dc618 | 8868 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 8869 | |
b4f54984 | 8870 | if (dwarf_read_debug) |
45cfd468 DE |
8871 | { |
8872 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8873 | objfile_name (objfile)); |
45cfd468 DE |
8874 | } |
8875 | ||
98bfdba5 PA |
8876 | dwarf2_per_objfile->reading_partial_symbols = 1; |
8877 | ||
be391dca | 8878 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 8879 | |
93311388 DE |
8880 | /* Any cached compilation units will be linked by the per-objfile |
8881 | read_in_chain. Make sure to free them when we're done. */ | |
ed2dc618 | 8882 | back_to = make_cleanup (free_cached_comp_units, dwarf2_per_objfile); |
72bf9492 | 8883 | |
ed2dc618 | 8884 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 8885 | |
ed2dc618 | 8886 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 8887 | |
60606b2c TT |
8888 | /* Create a temporary address map on a temporary obstack. We later |
8889 | copy this to the final obstack. */ | |
8268c778 | 8890 | auto_obstack temp_obstack; |
791afaa2 TT |
8891 | |
8892 | scoped_restore save_psymtabs_addrmap | |
8893 | = make_scoped_restore (&objfile->psymtabs_addrmap, | |
8894 | addrmap_create_mutable (&temp_obstack)); | |
72bf9492 | 8895 | |
21b2bd31 | 8896 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 8897 | { |
ed2dc618 | 8898 | struct dwarf2_per_cu_data *per_cu = dw2_get_cutu (dwarf2_per_objfile, i); |
aaa75496 | 8899 | |
b93601f3 | 8900 | process_psymtab_comp_unit (per_cu, 0, language_minimal); |
c906108c | 8901 | } |
ff013f42 | 8902 | |
6aa5f3a6 | 8903 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 8904 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
8905 | |
8906 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
8907 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
8908 | { | |
8909 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
ed2dc618 | 8910 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
8911 | } |
8912 | ||
b4f54984 | 8913 | if (dwarf_read_debug) |
ed2dc618 | 8914 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 8915 | |
ed2dc618 | 8916 | set_partial_user (dwarf2_per_objfile); |
95554aad | 8917 | |
ff013f42 JK |
8918 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
8919 | &objfile->objfile_obstack); | |
791afaa2 TT |
8920 | /* At this point we want to keep the address map. */ |
8921 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8922 | |
ae038cb0 | 8923 | do_cleanups (back_to); |
45cfd468 | 8924 | |
b4f54984 | 8925 | if (dwarf_read_debug) |
45cfd468 | 8926 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8927 | objfile_name (objfile)); |
ae038cb0 DJ |
8928 | } |
8929 | ||
3019eac3 | 8930 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
8931 | |
8932 | static void | |
dee91e82 | 8933 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 8934 | const gdb_byte *info_ptr, |
dee91e82 DE |
8935 | struct die_info *comp_unit_die, |
8936 | int has_children, | |
8937 | void *data) | |
ae038cb0 | 8938 | { |
dee91e82 | 8939 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 8940 | |
95554aad | 8941 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 8942 | |
ae038cb0 DJ |
8943 | /* Check if comp unit has_children. |
8944 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 8945 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 8946 | if (has_children) |
dee91e82 DE |
8947 | load_partial_dies (reader, info_ptr, 0); |
8948 | } | |
98bfdba5 | 8949 | |
dee91e82 DE |
8950 | /* Load the partial DIEs for a secondary CU into memory. |
8951 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8952 | |
dee91e82 DE |
8953 | static void |
8954 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
8955 | { | |
f4dc4d17 DE |
8956 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
8957 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
8958 | } |
8959 | ||
ae038cb0 | 8960 | static void |
ed2dc618 | 8961 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 8962 | struct dwarf2_section_info *section, |
f1902523 | 8963 | struct dwarf2_section_info *abbrev_section, |
36586728 TT |
8964 | unsigned int is_dwz, |
8965 | int *n_allocated, | |
8966 | int *n_comp_units, | |
8967 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 8968 | { |
d521ce57 | 8969 | const gdb_byte *info_ptr; |
ed2dc618 | 8970 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 8971 | |
b4f54984 | 8972 | if (dwarf_read_debug) |
bf6af496 | 8973 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
8974 | get_section_name (section), |
8975 | get_section_file_name (section)); | |
bf6af496 | 8976 | |
36586728 | 8977 | dwarf2_read_section (objfile, section); |
ae038cb0 | 8978 | |
36586728 | 8979 | info_ptr = section->buffer; |
6e70227d | 8980 | |
36586728 | 8981 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8982 | { |
ae038cb0 | 8983 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8984 | |
9c541725 | 8985 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8986 | |
f1902523 | 8987 | comp_unit_head cu_header; |
ed2dc618 SM |
8988 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8989 | abbrev_section, info_ptr, | |
8990 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8991 | |
8992 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
8993 | if (cu_header.unit_type != DW_UT_type) |
8994 | { | |
8995 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
8996 | struct dwarf2_per_cu_data); | |
8997 | memset (this_cu, 0, sizeof (*this_cu)); | |
8998 | } | |
8999 | else | |
9000 | { | |
9001 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
9002 | struct signatured_type); | |
9003 | memset (sig_type, 0, sizeof (*sig_type)); | |
9004 | sig_type->signature = cu_header.signature; | |
9005 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
9006 | this_cu = &sig_type->per_cu; | |
9007 | } | |
9008 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 9009 | this_cu->sect_off = sect_off; |
f1902523 | 9010 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 9011 | this_cu->is_dwz = is_dwz; |
e3b94546 | 9012 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 9013 | this_cu->section = section; |
ae038cb0 | 9014 | |
36586728 | 9015 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 9016 | { |
36586728 | 9017 | *n_allocated *= 2; |
224c3ddb SM |
9018 | *all_comp_units = XRESIZEVEC (struct dwarf2_per_cu_data *, |
9019 | *all_comp_units, *n_allocated); | |
ae038cb0 | 9020 | } |
36586728 TT |
9021 | (*all_comp_units)[*n_comp_units] = this_cu; |
9022 | ++*n_comp_units; | |
ae038cb0 DJ |
9023 | |
9024 | info_ptr = info_ptr + this_cu->length; | |
9025 | } | |
36586728 TT |
9026 | } |
9027 | ||
9028 | /* Create a list of all compilation units in OBJFILE. | |
9029 | This is only done for -readnow and building partial symtabs. */ | |
9030 | ||
9031 | static void | |
ed2dc618 | 9032 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 TT |
9033 | { |
9034 | int n_allocated; | |
9035 | int n_comp_units; | |
9036 | struct dwarf2_per_cu_data **all_comp_units; | |
4db1a1dc | 9037 | struct dwz_file *dwz; |
ed2dc618 | 9038 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
36586728 TT |
9039 | |
9040 | n_comp_units = 0; | |
9041 | n_allocated = 10; | |
8d749320 | 9042 | all_comp_units = XNEWVEC (struct dwarf2_per_cu_data *, n_allocated); |
36586728 | 9043 | |
ed2dc618 | 9044 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
f1902523 | 9045 | &dwarf2_per_objfile->abbrev, 0, |
36586728 TT |
9046 | &n_allocated, &n_comp_units, &all_comp_units); |
9047 | ||
ed2dc618 | 9048 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 9049 | if (dwz != NULL) |
ed2dc618 SM |
9050 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
9051 | 1, &n_allocated, &n_comp_units, | |
4db1a1dc | 9052 | &all_comp_units); |
ae038cb0 | 9053 | |
8d749320 SM |
9054 | dwarf2_per_objfile->all_comp_units = XOBNEWVEC (&objfile->objfile_obstack, |
9055 | struct dwarf2_per_cu_data *, | |
9056 | n_comp_units); | |
ae038cb0 DJ |
9057 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, |
9058 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
9059 | xfree (all_comp_units); | |
9060 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
9061 | } |
9062 | ||
5734ee8b | 9063 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 9064 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 9065 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
9066 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
9067 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 9068 | |
72bf9492 DJ |
9069 | static void |
9070 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
9071 | CORE_ADDR *highpc, int set_addrmap, |
9072 | struct dwarf2_cu *cu) | |
c906108c | 9073 | { |
72bf9492 | 9074 | struct partial_die_info *pdi; |
c906108c | 9075 | |
91c24f0a DC |
9076 | /* Now, march along the PDI's, descending into ones which have |
9077 | interesting children but skipping the children of the other ones, | |
9078 | until we reach the end of the compilation unit. */ | |
c906108c | 9079 | |
72bf9492 | 9080 | pdi = first_die; |
91c24f0a | 9081 | |
72bf9492 DJ |
9082 | while (pdi != NULL) |
9083 | { | |
52356b79 | 9084 | pdi->fixup (cu); |
c906108c | 9085 | |
f55ee35c | 9086 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
9087 | children, so we need to look at them. Ditto for anonymous |
9088 | enums. */ | |
933c6fe4 | 9089 | |
72bf9492 | 9090 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 9091 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
9092 | || pdi->tag == DW_TAG_imported_unit |
9093 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 9094 | { |
72bf9492 | 9095 | switch (pdi->tag) |
c906108c SS |
9096 | { |
9097 | case DW_TAG_subprogram: | |
b1dc1806 | 9098 | case DW_TAG_inlined_subroutine: |
cdc07690 | 9099 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 9100 | break; |
72929c62 | 9101 | case DW_TAG_constant: |
c906108c SS |
9102 | case DW_TAG_variable: |
9103 | case DW_TAG_typedef: | |
91c24f0a | 9104 | case DW_TAG_union_type: |
72bf9492 | 9105 | if (!pdi->is_declaration) |
63d06c5c | 9106 | { |
72bf9492 | 9107 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
9108 | } |
9109 | break; | |
c906108c | 9110 | case DW_TAG_class_type: |
680b30c7 | 9111 | case DW_TAG_interface_type: |
c906108c | 9112 | case DW_TAG_structure_type: |
72bf9492 | 9113 | if (!pdi->is_declaration) |
c906108c | 9114 | { |
72bf9492 | 9115 | add_partial_symbol (pdi, cu); |
c906108c | 9116 | } |
b7fee5a3 KS |
9117 | if ((cu->language == language_rust |
9118 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
9119 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
9120 | set_addrmap, cu); | |
c906108c | 9121 | break; |
91c24f0a | 9122 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
9123 | if (!pdi->is_declaration) |
9124 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
9125 | break; |
9126 | case DW_TAG_base_type: | |
a02abb62 | 9127 | case DW_TAG_subrange_type: |
c906108c | 9128 | /* File scope base type definitions are added to the partial |
c5aa993b | 9129 | symbol table. */ |
72bf9492 | 9130 | add_partial_symbol (pdi, cu); |
c906108c | 9131 | break; |
d9fa45fe | 9132 | case DW_TAG_namespace: |
cdc07690 | 9133 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 9134 | break; |
5d7cb8df | 9135 | case DW_TAG_module: |
cdc07690 | 9136 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 9137 | break; |
95554aad TT |
9138 | case DW_TAG_imported_unit: |
9139 | { | |
9140 | struct dwarf2_per_cu_data *per_cu; | |
9141 | ||
f4dc4d17 DE |
9142 | /* For now we don't handle imported units in type units. */ |
9143 | if (cu->per_cu->is_debug_types) | |
9144 | { | |
9145 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
9146 | " supported in type units [in module %s]"), | |
518817b3 | 9147 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
9148 | } |
9149 | ||
e3b94546 SM |
9150 | per_cu = dwarf2_find_containing_comp_unit |
9151 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 9152 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
9153 | |
9154 | /* Go read the partial unit, if needed. */ | |
9155 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 9156 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 9157 | |
f4dc4d17 | 9158 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 9159 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
9160 | } |
9161 | break; | |
74921315 KS |
9162 | case DW_TAG_imported_declaration: |
9163 | add_partial_symbol (pdi, cu); | |
9164 | break; | |
c906108c SS |
9165 | default: |
9166 | break; | |
9167 | } | |
9168 | } | |
9169 | ||
72bf9492 DJ |
9170 | /* If the die has a sibling, skip to the sibling. */ |
9171 | ||
9172 | pdi = pdi->die_sibling; | |
9173 | } | |
9174 | } | |
9175 | ||
9176 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 9177 | |
72bf9492 | 9178 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 9179 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
9180 | Enumerators are an exception; they use the scope of their parent |
9181 | enumeration type, i.e. the name of the enumeration type is not | |
9182 | prepended to the enumerator. | |
91c24f0a | 9183 | |
72bf9492 DJ |
9184 | There are two complexities. One is DW_AT_specification; in this |
9185 | case "parent" means the parent of the target of the specification, | |
9186 | instead of the direct parent of the DIE. The other is compilers | |
9187 | which do not emit DW_TAG_namespace; in this case we try to guess | |
9188 | the fully qualified name of structure types from their members' | |
9189 | linkage names. This must be done using the DIE's children rather | |
9190 | than the children of any DW_AT_specification target. We only need | |
9191 | to do this for structures at the top level, i.e. if the target of | |
9192 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
9193 | have a parent. */ | |
9194 | ||
9195 | /* Compute the scope prefix associated with PDI's parent, in | |
9196 | compilation unit CU. The result will be allocated on CU's | |
9197 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
9198 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 9199 | static const char * |
72bf9492 DJ |
9200 | partial_die_parent_scope (struct partial_die_info *pdi, |
9201 | struct dwarf2_cu *cu) | |
9202 | { | |
15d034d0 | 9203 | const char *grandparent_scope; |
72bf9492 | 9204 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 9205 | |
72bf9492 DJ |
9206 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
9207 | then this means the parent of the specification DIE. */ | |
9208 | ||
9209 | real_pdi = pdi; | |
72bf9492 | 9210 | while (real_pdi->has_specification) |
36586728 TT |
9211 | real_pdi = find_partial_die (real_pdi->spec_offset, |
9212 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
9213 | |
9214 | parent = real_pdi->die_parent; | |
9215 | if (parent == NULL) | |
9216 | return NULL; | |
9217 | ||
9218 | if (parent->scope_set) | |
9219 | return parent->scope; | |
9220 | ||
52356b79 | 9221 | parent->fixup (cu); |
72bf9492 | 9222 | |
10b3939b | 9223 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 9224 | |
acebe513 UW |
9225 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
9226 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
9227 | Work around this problem here. */ | |
9228 | if (cu->language == language_cplus | |
6e70227d | 9229 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
9230 | && strcmp (parent->name, "::") == 0 |
9231 | && grandparent_scope == NULL) | |
9232 | { | |
9233 | parent->scope = NULL; | |
9234 | parent->scope_set = 1; | |
9235 | return NULL; | |
9236 | } | |
9237 | ||
9c6c53f7 SA |
9238 | if (pdi->tag == DW_TAG_enumerator) |
9239 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
9240 | parent->scope = grandparent_scope; | |
9241 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 9242 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
9243 | || parent->tag == DW_TAG_structure_type |
9244 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 9245 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
9246 | || parent->tag == DW_TAG_union_type |
9247 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
9248 | { |
9249 | if (grandparent_scope == NULL) | |
9250 | parent->scope = parent->name; | |
9251 | else | |
3e43a32a MS |
9252 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
9253 | grandparent_scope, | |
f55ee35c | 9254 | parent->name, 0, cu); |
72bf9492 | 9255 | } |
72bf9492 DJ |
9256 | else |
9257 | { | |
9258 | /* FIXME drow/2004-04-01: What should we be doing with | |
9259 | function-local names? For partial symbols, we should probably be | |
9260 | ignoring them. */ | |
9261 | complaint (&symfile_complaints, | |
9d8780f0 SM |
9262 | _("unhandled containing DIE tag %d for DIE at %s"), |
9263 | parent->tag, sect_offset_str (pdi->sect_off)); | |
72bf9492 | 9264 | parent->scope = grandparent_scope; |
c906108c SS |
9265 | } |
9266 | ||
72bf9492 DJ |
9267 | parent->scope_set = 1; |
9268 | return parent->scope; | |
9269 | } | |
9270 | ||
9271 | /* Return the fully scoped name associated with PDI, from compilation unit | |
9272 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 9273 | |
72bf9492 DJ |
9274 | static char * |
9275 | partial_die_full_name (struct partial_die_info *pdi, | |
9276 | struct dwarf2_cu *cu) | |
9277 | { | |
15d034d0 | 9278 | const char *parent_scope; |
72bf9492 | 9279 | |
98bfdba5 PA |
9280 | /* If this is a template instantiation, we can not work out the |
9281 | template arguments from partial DIEs. So, unfortunately, we have | |
9282 | to go through the full DIEs. At least any work we do building | |
9283 | types here will be reused if full symbols are loaded later. */ | |
9284 | if (pdi->has_template_arguments) | |
9285 | { | |
52356b79 | 9286 | pdi->fixup (cu); |
98bfdba5 PA |
9287 | |
9288 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
9289 | { | |
9290 | struct die_info *die; | |
9291 | struct attribute attr; | |
9292 | struct dwarf2_cu *ref_cu = cu; | |
9293 | ||
b64f50a1 | 9294 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 9295 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 9296 | attr.form = DW_FORM_ref_addr; |
9c541725 | 9297 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
9298 | die = follow_die_ref (NULL, &attr, &ref_cu); |
9299 | ||
9300 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
9301 | } | |
9302 | } | |
9303 | ||
72bf9492 DJ |
9304 | parent_scope = partial_die_parent_scope (pdi, cu); |
9305 | if (parent_scope == NULL) | |
9306 | return NULL; | |
9307 | else | |
f55ee35c | 9308 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
9309 | } |
9310 | ||
9311 | static void | |
72bf9492 | 9312 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 9313 | { |
518817b3 SM |
9314 | struct dwarf2_per_objfile *dwarf2_per_objfile |
9315 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 9316 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 9317 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 9318 | CORE_ADDR addr = 0; |
15d034d0 | 9319 | const char *actual_name = NULL; |
e142c38c | 9320 | CORE_ADDR baseaddr; |
15d034d0 | 9321 | char *built_actual_name; |
e142c38c DJ |
9322 | |
9323 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 9324 | |
15d034d0 TT |
9325 | built_actual_name = partial_die_full_name (pdi, cu); |
9326 | if (built_actual_name != NULL) | |
9327 | actual_name = built_actual_name; | |
63d06c5c | 9328 | |
72bf9492 DJ |
9329 | if (actual_name == NULL) |
9330 | actual_name = pdi->name; | |
9331 | ||
c906108c SS |
9332 | switch (pdi->tag) |
9333 | { | |
b1dc1806 | 9334 | case DW_TAG_inlined_subroutine: |
c906108c | 9335 | case DW_TAG_subprogram: |
3e29f34a | 9336 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr); |
2cfa0c8d | 9337 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 9338 | { |
2cfa0c8d JB |
9339 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
9340 | of the global scope. But in Ada, we want to be able to access | |
9341 | nested procedures globally. So all Ada subprograms are stored | |
9342 | in the global scope. */ | |
f47fb265 | 9343 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9344 | built_actual_name != NULL, |
f47fb265 MS |
9345 | VAR_DOMAIN, LOC_BLOCK, |
9346 | &objfile->global_psymbols, | |
1762568f | 9347 | addr, cu->language, objfile); |
c906108c SS |
9348 | } |
9349 | else | |
9350 | { | |
f47fb265 | 9351 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9352 | built_actual_name != NULL, |
f47fb265 MS |
9353 | VAR_DOMAIN, LOC_BLOCK, |
9354 | &objfile->static_psymbols, | |
1762568f | 9355 | addr, cu->language, objfile); |
c906108c | 9356 | } |
0c1b455e TT |
9357 | |
9358 | if (pdi->main_subprogram && actual_name != NULL) | |
9359 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 9360 | break; |
72929c62 JB |
9361 | case DW_TAG_constant: |
9362 | { | |
af5bf4ad | 9363 | std::vector<partial_symbol *> *list; |
72929c62 JB |
9364 | |
9365 | if (pdi->is_external) | |
9366 | list = &objfile->global_psymbols; | |
9367 | else | |
9368 | list = &objfile->static_psymbols; | |
f47fb265 | 9369 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9370 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
1762568f | 9371 | list, 0, cu->language, objfile); |
72929c62 JB |
9372 | } |
9373 | break; | |
c906108c | 9374 | case DW_TAG_variable: |
95554aad TT |
9375 | if (pdi->d.locdesc) |
9376 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 9377 | |
95554aad | 9378 | if (pdi->d.locdesc |
caac4577 JG |
9379 | && addr == 0 |
9380 | && !dwarf2_per_objfile->has_section_at_zero) | |
9381 | { | |
9382 | /* A global or static variable may also have been stripped | |
9383 | out by the linker if unused, in which case its address | |
9384 | will be nullified; do not add such variables into partial | |
9385 | symbol table then. */ | |
9386 | } | |
9387 | else if (pdi->is_external) | |
c906108c SS |
9388 | { |
9389 | /* Global Variable. | |
9390 | Don't enter into the minimal symbol tables as there is | |
9391 | a minimal symbol table entry from the ELF symbols already. | |
9392 | Enter into partial symbol table if it has a location | |
9393 | descriptor or a type. | |
9394 | If the location descriptor is missing, new_symbol will create | |
9395 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
9396 | be determined from the minimal symbol table whenever the variable | |
9397 | is referenced. | |
9398 | The address for the partial symbol table entry is not | |
9399 | used by GDB, but it comes in handy for debugging partial symbol | |
9400 | table building. */ | |
9401 | ||
95554aad | 9402 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 9403 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9404 | built_actual_name != NULL, |
f47fb265 MS |
9405 | VAR_DOMAIN, LOC_STATIC, |
9406 | &objfile->global_psymbols, | |
1762568f | 9407 | addr + baseaddr, |
f47fb265 | 9408 | cu->language, objfile); |
c906108c SS |
9409 | } |
9410 | else | |
9411 | { | |
ff908ebf AW |
9412 | int has_loc = pdi->d.locdesc != NULL; |
9413 | ||
9414 | /* Static Variable. Skip symbols whose value we cannot know (those | |
9415 | without location descriptors or constant values). */ | |
9416 | if (!has_loc && !pdi->has_const_value) | |
decbce07 | 9417 | { |
15d034d0 | 9418 | xfree (built_actual_name); |
decbce07 MS |
9419 | return; |
9420 | } | |
ff908ebf | 9421 | |
f47fb265 | 9422 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9423 | built_actual_name != NULL, |
f47fb265 MS |
9424 | VAR_DOMAIN, LOC_STATIC, |
9425 | &objfile->static_psymbols, | |
ff908ebf | 9426 | has_loc ? addr + baseaddr : (CORE_ADDR) 0, |
f47fb265 | 9427 | cu->language, objfile); |
c906108c SS |
9428 | } |
9429 | break; | |
9430 | case DW_TAG_typedef: | |
9431 | case DW_TAG_base_type: | |
a02abb62 | 9432 | case DW_TAG_subrange_type: |
38d518c9 | 9433 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9434 | built_actual_name != NULL, |
176620f1 | 9435 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 9436 | &objfile->static_psymbols, |
1762568f | 9437 | 0, cu->language, objfile); |
c906108c | 9438 | break; |
74921315 | 9439 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
9440 | case DW_TAG_namespace: |
9441 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 9442 | built_actual_name != NULL, |
72bf9492 DJ |
9443 | VAR_DOMAIN, LOC_TYPEDEF, |
9444 | &objfile->global_psymbols, | |
1762568f | 9445 | 0, cu->language, objfile); |
72bf9492 | 9446 | break; |
530e8392 KB |
9447 | case DW_TAG_module: |
9448 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
9449 | built_actual_name != NULL, | |
9450 | MODULE_DOMAIN, LOC_TYPEDEF, | |
9451 | &objfile->global_psymbols, | |
1762568f | 9452 | 0, cu->language, objfile); |
530e8392 | 9453 | break; |
c906108c | 9454 | case DW_TAG_class_type: |
680b30c7 | 9455 | case DW_TAG_interface_type: |
c906108c SS |
9456 | case DW_TAG_structure_type: |
9457 | case DW_TAG_union_type: | |
9458 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
9459 | /* Skip external references. The DWARF standard says in the section |
9460 | about "Structure, Union, and Class Type Entries": "An incomplete | |
9461 | structure, union or class type is represented by a structure, | |
9462 | union or class entry that does not have a byte size attribute | |
9463 | and that has a DW_AT_declaration attribute." */ | |
9464 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 9465 | { |
15d034d0 | 9466 | xfree (built_actual_name); |
decbce07 MS |
9467 | return; |
9468 | } | |
fa4028e9 | 9469 | |
63d06c5c DC |
9470 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
9471 | static vs. global. */ | |
38d518c9 | 9472 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9473 | built_actual_name != NULL, |
176620f1 | 9474 | STRUCT_DOMAIN, LOC_TYPEDEF, |
9c37b5ae | 9475 | cu->language == language_cplus |
63d06c5c DC |
9476 | ? &objfile->global_psymbols |
9477 | : &objfile->static_psymbols, | |
1762568f | 9478 | 0, cu->language, objfile); |
c906108c | 9479 | |
c906108c SS |
9480 | break; |
9481 | case DW_TAG_enumerator: | |
38d518c9 | 9482 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9483 | built_actual_name != NULL, |
176620f1 | 9484 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 9485 | cu->language == language_cplus |
f6fe98ef DJ |
9486 | ? &objfile->global_psymbols |
9487 | : &objfile->static_psymbols, | |
1762568f | 9488 | 0, cu->language, objfile); |
c906108c SS |
9489 | break; |
9490 | default: | |
9491 | break; | |
9492 | } | |
5c4e30ca | 9493 | |
15d034d0 | 9494 | xfree (built_actual_name); |
c906108c SS |
9495 | } |
9496 | ||
5c4e30ca DC |
9497 | /* Read a partial die corresponding to a namespace; also, add a symbol |
9498 | corresponding to that namespace to the symbol table. NAMESPACE is | |
9499 | the name of the enclosing namespace. */ | |
91c24f0a | 9500 | |
72bf9492 DJ |
9501 | static void |
9502 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 9503 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 9504 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 9505 | { |
72bf9492 | 9506 | /* Add a symbol for the namespace. */ |
e7c27a73 | 9507 | |
72bf9492 | 9508 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
9509 | |
9510 | /* Now scan partial symbols in that namespace. */ | |
9511 | ||
91c24f0a | 9512 | if (pdi->has_children) |
cdc07690 | 9513 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
9514 | } |
9515 | ||
5d7cb8df JK |
9516 | /* Read a partial die corresponding to a Fortran module. */ |
9517 | ||
9518 | static void | |
9519 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 9520 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 9521 | { |
530e8392 KB |
9522 | /* Add a symbol for the namespace. */ |
9523 | ||
9524 | add_partial_symbol (pdi, cu); | |
9525 | ||
f55ee35c | 9526 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
9527 | |
9528 | if (pdi->has_children) | |
cdc07690 | 9529 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
9530 | } |
9531 | ||
b1dc1806 XR |
9532 | /* Read a partial die corresponding to a subprogram or an inlined |
9533 | subprogram and create a partial symbol for that subprogram. | |
9534 | When the CU language allows it, this routine also defines a partial | |
9535 | symbol for each nested subprogram that this subprogram contains. | |
9536 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
9537 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 9538 | |
cdc07690 YQ |
9539 | PDI may also be a lexical block, in which case we simply search |
9540 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
9541 | Again, this is only performed when the CU language allows this |
9542 | type of definitions. */ | |
9543 | ||
9544 | static void | |
9545 | add_partial_subprogram (struct partial_die_info *pdi, | |
9546 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 9547 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 9548 | { |
b1dc1806 | 9549 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
9550 | { |
9551 | if (pdi->has_pc_info) | |
9552 | { | |
9553 | if (pdi->lowpc < *lowpc) | |
9554 | *lowpc = pdi->lowpc; | |
9555 | if (pdi->highpc > *highpc) | |
9556 | *highpc = pdi->highpc; | |
cdc07690 | 9557 | if (set_addrmap) |
5734ee8b | 9558 | { |
518817b3 | 9559 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
9560 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9561 | CORE_ADDR baseaddr; | |
9562 | CORE_ADDR highpc; | |
9563 | CORE_ADDR lowpc; | |
5734ee8b DJ |
9564 | |
9565 | baseaddr = ANOFFSET (objfile->section_offsets, | |
9566 | SECT_OFF_TEXT (objfile)); | |
3e29f34a MR |
9567 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, |
9568 | pdi->lowpc + baseaddr); | |
9569 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
9570 | pdi->highpc + baseaddr); | |
9571 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
9291a0cd | 9572 | cu->per_cu->v.psymtab); |
5734ee8b | 9573 | } |
481860b3 GB |
9574 | } |
9575 | ||
9576 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
9577 | { | |
bc30ff58 | 9578 | if (!pdi->is_declaration) |
e8d05480 JB |
9579 | /* Ignore subprogram DIEs that do not have a name, they are |
9580 | illegal. Do not emit a complaint at this point, we will | |
9581 | do so when we convert this psymtab into a symtab. */ | |
9582 | if (pdi->name) | |
9583 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
9584 | } |
9585 | } | |
6e70227d | 9586 | |
bc30ff58 JB |
9587 | if (! pdi->has_children) |
9588 | return; | |
9589 | ||
9590 | if (cu->language == language_ada) | |
9591 | { | |
9592 | pdi = pdi->die_child; | |
9593 | while (pdi != NULL) | |
9594 | { | |
52356b79 | 9595 | pdi->fixup (cu); |
bc30ff58 | 9596 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 9597 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 9598 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 9599 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
9600 | pdi = pdi->die_sibling; |
9601 | } | |
9602 | } | |
9603 | } | |
9604 | ||
91c24f0a DC |
9605 | /* Read a partial die corresponding to an enumeration type. */ |
9606 | ||
72bf9492 DJ |
9607 | static void |
9608 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
9609 | struct dwarf2_cu *cu) | |
91c24f0a | 9610 | { |
72bf9492 | 9611 | struct partial_die_info *pdi; |
91c24f0a DC |
9612 | |
9613 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
9614 | add_partial_symbol (enum_pdi, cu); |
9615 | ||
9616 | pdi = enum_pdi->die_child; | |
9617 | while (pdi) | |
91c24f0a | 9618 | { |
72bf9492 | 9619 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 9620 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 9621 | else |
72bf9492 DJ |
9622 | add_partial_symbol (pdi, cu); |
9623 | pdi = pdi->die_sibling; | |
91c24f0a | 9624 | } |
91c24f0a DC |
9625 | } |
9626 | ||
6caca83c CC |
9627 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
9628 | ||
9629 | static unsigned int | |
d521ce57 | 9630 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
9631 | { |
9632 | unsigned int bytes_read; | |
9633 | ||
9634 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9635 | } | |
9636 | ||
685af9cd TT |
9637 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
9638 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
9639 | ||
4bb7a0a7 DJ |
9640 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
9641 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
9642 | the initial number. */ | |
9643 | ||
9644 | static struct abbrev_info * | |
685af9cd TT |
9645 | peek_die_abbrev (const die_reader_specs &reader, |
9646 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 9647 | { |
685af9cd | 9648 | dwarf2_cu *cu = reader.cu; |
518817b3 | 9649 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
9650 | unsigned int abbrev_number |
9651 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
9652 | |
9653 | if (abbrev_number == 0) | |
9654 | return NULL; | |
9655 | ||
685af9cd | 9656 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
9657 | if (!abbrev) |
9658 | { | |
422b9917 | 9659 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 9660 | " at offset %s [in module %s]"), |
422b9917 | 9661 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 9662 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
9663 | } |
9664 | ||
9665 | return abbrev; | |
9666 | } | |
9667 | ||
93311388 DE |
9668 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9669 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
9670 | DIE. Any children of the skipped DIEs will also be skipped. */ |
9671 | ||
d521ce57 TT |
9672 | static const gdb_byte * |
9673 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 9674 | { |
4bb7a0a7 DJ |
9675 | while (1) |
9676 | { | |
685af9cd TT |
9677 | unsigned int bytes_read; |
9678 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
9679 | ||
4bb7a0a7 DJ |
9680 | if (abbrev == NULL) |
9681 | return info_ptr + bytes_read; | |
9682 | else | |
dee91e82 | 9683 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
9684 | } |
9685 | } | |
9686 | ||
93311388 DE |
9687 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9688 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
9689 | abbrev corresponding to that skipped uleb128 should be passed in |
9690 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
9691 | children. */ | |
9692 | ||
d521ce57 TT |
9693 | static const gdb_byte * |
9694 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 9695 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
9696 | { |
9697 | unsigned int bytes_read; | |
9698 | struct attribute attr; | |
dee91e82 DE |
9699 | bfd *abfd = reader->abfd; |
9700 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 9701 | const gdb_byte *buffer = reader->buffer; |
f664829e | 9702 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
9703 | unsigned int form, i; |
9704 | ||
9705 | for (i = 0; i < abbrev->num_attrs; i++) | |
9706 | { | |
9707 | /* The only abbrev we care about is DW_AT_sibling. */ | |
9708 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
9709 | { | |
dee91e82 | 9710 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 9711 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
9712 | complaint (&symfile_complaints, |
9713 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 9714 | else |
b9502d3f | 9715 | { |
9c541725 PA |
9716 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
9717 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
9718 | |
9719 | if (sibling_ptr < info_ptr) | |
9720 | complaint (&symfile_complaints, | |
9721 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
9722 | else if (sibling_ptr > reader->buffer_end) |
9723 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
9724 | else |
9725 | return sibling_ptr; | |
9726 | } | |
4bb7a0a7 DJ |
9727 | } |
9728 | ||
9729 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
9730 | form = abbrev->attrs[i].form; | |
9731 | skip_attribute: | |
9732 | switch (form) | |
9733 | { | |
4bb7a0a7 | 9734 | case DW_FORM_ref_addr: |
ae411497 TT |
9735 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
9736 | and later it is offset sized. */ | |
9737 | if (cu->header.version == 2) | |
9738 | info_ptr += cu->header.addr_size; | |
9739 | else | |
9740 | info_ptr += cu->header.offset_size; | |
9741 | break; | |
36586728 TT |
9742 | case DW_FORM_GNU_ref_alt: |
9743 | info_ptr += cu->header.offset_size; | |
9744 | break; | |
ae411497 | 9745 | case DW_FORM_addr: |
4bb7a0a7 DJ |
9746 | info_ptr += cu->header.addr_size; |
9747 | break; | |
9748 | case DW_FORM_data1: | |
9749 | case DW_FORM_ref1: | |
9750 | case DW_FORM_flag: | |
9751 | info_ptr += 1; | |
9752 | break; | |
2dc7f7b3 | 9753 | case DW_FORM_flag_present: |
43988095 | 9754 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9755 | break; |
4bb7a0a7 DJ |
9756 | case DW_FORM_data2: |
9757 | case DW_FORM_ref2: | |
9758 | info_ptr += 2; | |
9759 | break; | |
9760 | case DW_FORM_data4: | |
9761 | case DW_FORM_ref4: | |
9762 | info_ptr += 4; | |
9763 | break; | |
9764 | case DW_FORM_data8: | |
9765 | case DW_FORM_ref8: | |
55f1336d | 9766 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9767 | info_ptr += 8; |
9768 | break; | |
0224619f JK |
9769 | case DW_FORM_data16: |
9770 | info_ptr += 16; | |
9771 | break; | |
4bb7a0a7 | 9772 | case DW_FORM_string: |
9b1c24c8 | 9773 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9774 | info_ptr += bytes_read; |
9775 | break; | |
2dc7f7b3 | 9776 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9777 | case DW_FORM_strp: |
36586728 | 9778 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9779 | info_ptr += cu->header.offset_size; |
9780 | break; | |
2dc7f7b3 | 9781 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9782 | case DW_FORM_block: |
9783 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9784 | info_ptr += bytes_read; | |
9785 | break; | |
9786 | case DW_FORM_block1: | |
9787 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9788 | break; | |
9789 | case DW_FORM_block2: | |
9790 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9791 | break; | |
9792 | case DW_FORM_block4: | |
9793 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9794 | break; | |
9795 | case DW_FORM_sdata: | |
9796 | case DW_FORM_udata: | |
9797 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9798 | case DW_FORM_GNU_addr_index: |
9799 | case DW_FORM_GNU_str_index: | |
d521ce57 | 9800 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9801 | break; |
9802 | case DW_FORM_indirect: | |
9803 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9804 | info_ptr += bytes_read; | |
9805 | /* We need to continue parsing from here, so just go back to | |
9806 | the top. */ | |
9807 | goto skip_attribute; | |
9808 | ||
9809 | default: | |
3e43a32a MS |
9810 | error (_("Dwarf Error: Cannot handle %s " |
9811 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9812 | dwarf_form_name (form), |
9813 | bfd_get_filename (abfd)); | |
9814 | } | |
9815 | } | |
9816 | ||
9817 | if (abbrev->has_children) | |
dee91e82 | 9818 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9819 | else |
9820 | return info_ptr; | |
9821 | } | |
9822 | ||
93311388 | 9823 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9824 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9825 | |
d521ce57 | 9826 | static const gdb_byte * |
dee91e82 DE |
9827 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9828 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9829 | const gdb_byte *info_ptr) |
91c24f0a DC |
9830 | { |
9831 | /* Do we know the sibling already? */ | |
72bf9492 | 9832 | |
91c24f0a DC |
9833 | if (orig_pdi->sibling) |
9834 | return orig_pdi->sibling; | |
9835 | ||
9836 | /* Are there any children to deal with? */ | |
9837 | ||
9838 | if (!orig_pdi->has_children) | |
9839 | return info_ptr; | |
9840 | ||
4bb7a0a7 | 9841 | /* Skip the children the long way. */ |
91c24f0a | 9842 | |
dee91e82 | 9843 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9844 | } |
9845 | ||
257e7a09 | 9846 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9847 | not NULL. */ |
c906108c SS |
9848 | |
9849 | static void | |
257e7a09 YQ |
9850 | dwarf2_read_symtab (struct partial_symtab *self, |
9851 | struct objfile *objfile) | |
c906108c | 9852 | { |
ed2dc618 SM |
9853 | struct dwarf2_per_objfile *dwarf2_per_objfile |
9854 | = get_dwarf2_per_objfile (objfile); | |
9855 | ||
257e7a09 | 9856 | if (self->readin) |
c906108c | 9857 | { |
442e4d9c | 9858 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 9859 | self->filename); |
442e4d9c YQ |
9860 | } |
9861 | else | |
9862 | { | |
9863 | if (info_verbose) | |
c906108c | 9864 | { |
442e4d9c | 9865 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 9866 | self->filename); |
442e4d9c | 9867 | gdb_flush (gdb_stdout); |
c906108c | 9868 | } |
c906108c | 9869 | |
442e4d9c YQ |
9870 | /* If this psymtab is constructed from a debug-only objfile, the |
9871 | has_section_at_zero flag will not necessarily be correct. We | |
9872 | can get the correct value for this flag by looking at the data | |
9873 | associated with the (presumably stripped) associated objfile. */ | |
9874 | if (objfile->separate_debug_objfile_backlink) | |
9875 | { | |
9876 | struct dwarf2_per_objfile *dpo_backlink | |
ed2dc618 | 9877 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
9a619af0 | 9878 | |
442e4d9c YQ |
9879 | dwarf2_per_objfile->has_section_at_zero |
9880 | = dpo_backlink->has_section_at_zero; | |
9881 | } | |
b2ab525c | 9882 | |
442e4d9c | 9883 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 9884 | |
257e7a09 | 9885 | psymtab_to_symtab_1 (self); |
c906108c | 9886 | |
442e4d9c YQ |
9887 | /* Finish up the debug error message. */ |
9888 | if (info_verbose) | |
9889 | printf_filtered (_("done.\n")); | |
c906108c | 9890 | } |
95554aad | 9891 | |
ed2dc618 | 9892 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 9893 | } |
9cdd5dbd DE |
9894 | \f |
9895 | /* Reading in full CUs. */ | |
c906108c | 9896 | |
10b3939b DJ |
9897 | /* Add PER_CU to the queue. */ |
9898 | ||
9899 | static void | |
95554aad TT |
9900 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9901 | enum language pretend_language) | |
10b3939b DJ |
9902 | { |
9903 | struct dwarf2_queue_item *item; | |
9904 | ||
9905 | per_cu->queued = 1; | |
8d749320 | 9906 | item = XNEW (struct dwarf2_queue_item); |
10b3939b | 9907 | item->per_cu = per_cu; |
95554aad | 9908 | item->pretend_language = pretend_language; |
10b3939b DJ |
9909 | item->next = NULL; |
9910 | ||
9911 | if (dwarf2_queue == NULL) | |
9912 | dwarf2_queue = item; | |
9913 | else | |
9914 | dwarf2_queue_tail->next = item; | |
9915 | ||
9916 | dwarf2_queue_tail = item; | |
9917 | } | |
9918 | ||
89e63ee4 DE |
9919 | /* If PER_CU is not yet queued, add it to the queue. |
9920 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9921 | dependency. | |
0907af0c | 9922 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9923 | meaning either PER_CU is already queued or it is already loaded. |
9924 | ||
9925 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9926 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9927 | |
9928 | static int | |
89e63ee4 | 9929 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
9930 | struct dwarf2_per_cu_data *per_cu, |
9931 | enum language pretend_language) | |
9932 | { | |
9933 | /* We may arrive here during partial symbol reading, if we need full | |
9934 | DIEs to process an unusual case (e.g. template arguments). Do | |
9935 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 9936 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
9937 | { |
9938 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
9939 | return 1; | |
9940 | return 0; | |
9941 | } | |
9942 | ||
9943 | /* Mark the dependence relation so that we don't flush PER_CU | |
9944 | too early. */ | |
89e63ee4 DE |
9945 | if (dependent_cu != NULL) |
9946 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9947 | |
9948 | /* If it's already on the queue, we have nothing to do. */ | |
9949 | if (per_cu->queued) | |
9950 | return 0; | |
9951 | ||
9952 | /* If the compilation unit is already loaded, just mark it as | |
9953 | used. */ | |
9954 | if (per_cu->cu != NULL) | |
9955 | { | |
9956 | per_cu->cu->last_used = 0; | |
9957 | return 0; | |
9958 | } | |
9959 | ||
9960 | /* Add it to the queue. */ | |
9961 | queue_comp_unit (per_cu, pretend_language); | |
9962 | ||
9963 | return 1; | |
9964 | } | |
9965 | ||
10b3939b DJ |
9966 | /* Process the queue. */ |
9967 | ||
9968 | static void | |
ed2dc618 | 9969 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b DJ |
9970 | { |
9971 | struct dwarf2_queue_item *item, *next_item; | |
9972 | ||
b4f54984 | 9973 | if (dwarf_read_debug) |
45cfd468 DE |
9974 | { |
9975 | fprintf_unfiltered (gdb_stdlog, | |
9976 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 9977 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
9978 | } |
9979 | ||
03dd20cc DJ |
9980 | /* The queue starts out with one item, but following a DIE reference |
9981 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
9982 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
9983 | { | |
cc12ce38 DE |
9984 | if ((dwarf2_per_objfile->using_index |
9985 | ? !item->per_cu->v.quick->compunit_symtab | |
9986 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
9987 | /* Skip dummy CUs. */ | |
9988 | && item->per_cu->cu != NULL) | |
f4dc4d17 DE |
9989 | { |
9990 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 9991 | unsigned int debug_print_threshold; |
247f5c4f | 9992 | char buf[100]; |
f4dc4d17 | 9993 | |
247f5c4f | 9994 | if (per_cu->is_debug_types) |
f4dc4d17 | 9995 | { |
247f5c4f DE |
9996 | struct signatured_type *sig_type = |
9997 | (struct signatured_type *) per_cu; | |
9998 | ||
9d8780f0 | 9999 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 10000 | hex_string (sig_type->signature), |
9d8780f0 | 10001 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
10002 | /* There can be 100s of TUs. |
10003 | Only print them in verbose mode. */ | |
10004 | debug_print_threshold = 2; | |
f4dc4d17 | 10005 | } |
247f5c4f | 10006 | else |
73be47f5 | 10007 | { |
9d8780f0 SM |
10008 | sprintf (buf, "CU at offset %s", |
10009 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
10010 | debug_print_threshold = 1; |
10011 | } | |
247f5c4f | 10012 | |
b4f54984 | 10013 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 10014 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
10015 | |
10016 | if (per_cu->is_debug_types) | |
10017 | process_full_type_unit (per_cu, item->pretend_language); | |
10018 | else | |
10019 | process_full_comp_unit (per_cu, item->pretend_language); | |
10020 | ||
b4f54984 | 10021 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 10022 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 10023 | } |
10b3939b DJ |
10024 | |
10025 | item->per_cu->queued = 0; | |
10026 | next_item = item->next; | |
10027 | xfree (item); | |
10028 | } | |
10029 | ||
10030 | dwarf2_queue_tail = NULL; | |
45cfd468 | 10031 | |
b4f54984 | 10032 | if (dwarf_read_debug) |
45cfd468 DE |
10033 | { |
10034 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 10035 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 10036 | } |
10b3939b DJ |
10037 | } |
10038 | ||
10b3939b DJ |
10039 | /* Read in full symbols for PST, and anything it depends on. */ |
10040 | ||
c906108c | 10041 | static void |
fba45db2 | 10042 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 10043 | { |
10b3939b | 10044 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
10045 | int i; |
10046 | ||
95554aad TT |
10047 | if (pst->readin) |
10048 | return; | |
10049 | ||
aaa75496 | 10050 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
10051 | if (!pst->dependencies[i]->readin |
10052 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
10053 | { |
10054 | /* Inform about additional files that need to be read in. */ | |
10055 | if (info_verbose) | |
10056 | { | |
a3f17187 | 10057 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
10058 | fputs_filtered (" ", gdb_stdout); |
10059 | wrap_here (""); | |
10060 | fputs_filtered ("and ", gdb_stdout); | |
10061 | wrap_here (""); | |
10062 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 10063 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
10064 | gdb_flush (gdb_stdout); |
10065 | } | |
10066 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
10067 | } | |
10068 | ||
9a3c8263 | 10069 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
10b3939b DJ |
10070 | |
10071 | if (per_cu == NULL) | |
aaa75496 JB |
10072 | { |
10073 | /* It's an include file, no symbols to read for it. | |
10074 | Everything is in the parent symtab. */ | |
10075 | pst->readin = 1; | |
10076 | return; | |
10077 | } | |
c906108c | 10078 | |
a0f42c21 | 10079 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
10080 | } |
10081 | ||
dee91e82 DE |
10082 | /* Trivial hash function for die_info: the hash value of a DIE |
10083 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 10084 | |
dee91e82 DE |
10085 | static hashval_t |
10086 | die_hash (const void *item) | |
10b3939b | 10087 | { |
9a3c8263 | 10088 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 10089 | |
9c541725 | 10090 | return to_underlying (die->sect_off); |
dee91e82 | 10091 | } |
63d06c5c | 10092 | |
dee91e82 DE |
10093 | /* Trivial comparison function for die_info structures: two DIEs |
10094 | are equal if they have the same offset. */ | |
98bfdba5 | 10095 | |
dee91e82 DE |
10096 | static int |
10097 | die_eq (const void *item_lhs, const void *item_rhs) | |
10098 | { | |
9a3c8263 SM |
10099 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
10100 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 10101 | |
9c541725 | 10102 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 10103 | } |
c906108c | 10104 | |
dee91e82 DE |
10105 | /* die_reader_func for load_full_comp_unit. |
10106 | This is identical to read_signatured_type_reader, | |
10107 | but is kept separate for now. */ | |
c906108c | 10108 | |
dee91e82 DE |
10109 | static void |
10110 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 10111 | const gdb_byte *info_ptr, |
dee91e82 DE |
10112 | struct die_info *comp_unit_die, |
10113 | int has_children, | |
10114 | void *data) | |
10115 | { | |
10116 | struct dwarf2_cu *cu = reader->cu; | |
9a3c8263 | 10117 | enum language *language_ptr = (enum language *) data; |
6caca83c | 10118 | |
dee91e82 DE |
10119 | gdb_assert (cu->die_hash == NULL); |
10120 | cu->die_hash = | |
10121 | htab_create_alloc_ex (cu->header.length / 12, | |
10122 | die_hash, | |
10123 | die_eq, | |
10124 | NULL, | |
10125 | &cu->comp_unit_obstack, | |
10126 | hashtab_obstack_allocate, | |
10127 | dummy_obstack_deallocate); | |
e142c38c | 10128 | |
dee91e82 DE |
10129 | if (has_children) |
10130 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
10131 | &info_ptr, comp_unit_die); | |
10132 | cu->dies = comp_unit_die; | |
10133 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
10134 | |
10135 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 10136 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 10137 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
10138 | or we won't be able to build types correctly. |
10139 | Similarly, if we do not read the producer, we can not apply | |
10140 | producer-specific interpretation. */ | |
95554aad | 10141 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 10142 | } |
10b3939b | 10143 | |
dee91e82 | 10144 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 10145 | |
dee91e82 | 10146 | static void |
95554aad TT |
10147 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
10148 | enum language pretend_language) | |
dee91e82 | 10149 | { |
3019eac3 | 10150 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 10151 | |
f4dc4d17 DE |
10152 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
10153 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
10154 | } |
10155 | ||
3da10d80 KS |
10156 | /* Add a DIE to the delayed physname list. */ |
10157 | ||
10158 | static void | |
10159 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
10160 | const char *name, struct die_info *die, | |
10161 | struct dwarf2_cu *cu) | |
10162 | { | |
10163 | struct delayed_method_info mi; | |
10164 | mi.type = type; | |
10165 | mi.fnfield_index = fnfield_index; | |
10166 | mi.index = index; | |
10167 | mi.name = name; | |
10168 | mi.die = die; | |
c89b44cd | 10169 | cu->method_list.push_back (mi); |
3da10d80 KS |
10170 | } |
10171 | ||
3693fdb3 PA |
10172 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
10173 | "const" / "volatile". If so, decrements LEN by the length of the | |
10174 | modifier and return true. Otherwise return false. */ | |
10175 | ||
10176 | template<size_t N> | |
10177 | static bool | |
10178 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
10179 | { | |
10180 | size_t mod_len = sizeof (mod) - 1; | |
10181 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
10182 | { | |
10183 | len -= mod_len; | |
10184 | return true; | |
10185 | } | |
10186 | return false; | |
10187 | } | |
10188 | ||
3da10d80 KS |
10189 | /* Compute the physnames of any methods on the CU's method list. |
10190 | ||
10191 | The computation of method physnames is delayed in order to avoid the | |
10192 | (bad) condition that one of the method's formal parameters is of an as yet | |
10193 | incomplete type. */ | |
10194 | ||
10195 | static void | |
10196 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
10197 | { | |
3693fdb3 | 10198 | /* Only C++ delays computing physnames. */ |
c89b44cd | 10199 | if (cu->method_list.empty ()) |
3693fdb3 PA |
10200 | return; |
10201 | gdb_assert (cu->language == language_cplus); | |
10202 | ||
c89b44cd | 10203 | for (struct delayed_method_info &mi : cu->method_list) |
3da10d80 | 10204 | { |
1d06ead6 | 10205 | const char *physname; |
3da10d80 | 10206 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
10207 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
10208 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
10209 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 10210 | = physname ? physname : ""; |
3693fdb3 PA |
10211 | |
10212 | /* Since there's no tag to indicate whether a method is a | |
10213 | const/volatile overload, extract that information out of the | |
10214 | demangled name. */ | |
10215 | if (physname != NULL) | |
10216 | { | |
10217 | size_t len = strlen (physname); | |
10218 | ||
10219 | while (1) | |
10220 | { | |
10221 | if (physname[len] == ')') /* shortcut */ | |
10222 | break; | |
10223 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 10224 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 10225 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 10226 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
10227 | else |
10228 | break; | |
10229 | } | |
10230 | } | |
3da10d80 | 10231 | } |
c89b44cd TT |
10232 | |
10233 | /* The list is no longer needed. */ | |
10234 | cu->method_list.clear (); | |
3da10d80 KS |
10235 | } |
10236 | ||
a766d390 DE |
10237 | /* Go objects should be embedded in a DW_TAG_module DIE, |
10238 | and it's not clear if/how imported objects will appear. | |
10239 | To keep Go support simple until that's worked out, | |
10240 | go back through what we've read and create something usable. | |
10241 | We could do this while processing each DIE, and feels kinda cleaner, | |
10242 | but that way is more invasive. | |
10243 | This is to, for example, allow the user to type "p var" or "b main" | |
10244 | without having to specify the package name, and allow lookups | |
10245 | of module.object to work in contexts that use the expression | |
10246 | parser. */ | |
10247 | ||
10248 | static void | |
10249 | fixup_go_packaging (struct dwarf2_cu *cu) | |
10250 | { | |
10251 | char *package_name = NULL; | |
10252 | struct pending *list; | |
10253 | int i; | |
10254 | ||
10255 | for (list = global_symbols; list != NULL; list = list->next) | |
10256 | { | |
10257 | for (i = 0; i < list->nsyms; ++i) | |
10258 | { | |
10259 | struct symbol *sym = list->symbol[i]; | |
10260 | ||
10261 | if (SYMBOL_LANGUAGE (sym) == language_go | |
10262 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
10263 | { | |
10264 | char *this_package_name = go_symbol_package_name (sym); | |
10265 | ||
10266 | if (this_package_name == NULL) | |
10267 | continue; | |
10268 | if (package_name == NULL) | |
10269 | package_name = this_package_name; | |
10270 | else | |
10271 | { | |
518817b3 SM |
10272 | struct objfile *objfile |
10273 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
a766d390 DE |
10274 | if (strcmp (package_name, this_package_name) != 0) |
10275 | complaint (&symfile_complaints, | |
10276 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
08be3fe3 DE |
10277 | (symbol_symtab (sym) != NULL |
10278 | ? symtab_to_filename_for_display | |
10279 | (symbol_symtab (sym)) | |
e3b94546 | 10280 | : objfile_name (objfile)), |
a766d390 DE |
10281 | this_package_name, package_name); |
10282 | xfree (this_package_name); | |
10283 | } | |
10284 | } | |
10285 | } | |
10286 | } | |
10287 | ||
10288 | if (package_name != NULL) | |
10289 | { | |
518817b3 | 10290 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
34a68019 | 10291 | const char *saved_package_name |
224c3ddb SM |
10292 | = (const char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
10293 | package_name, | |
10294 | strlen (package_name)); | |
19f392bc UW |
10295 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
10296 | saved_package_name); | |
a766d390 DE |
10297 | struct symbol *sym; |
10298 | ||
10299 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
10300 | ||
e623cf5d | 10301 | sym = allocate_symbol (objfile); |
f85f34ed | 10302 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
10303 | SYMBOL_SET_NAMES (sym, saved_package_name, |
10304 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
10305 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
10306 | e.g., "main" finds the "main" module and not C's main(). */ | |
10307 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 10308 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
10309 | SYMBOL_TYPE (sym) = type; |
10310 | ||
10311 | add_symbol_to_list (sym, &global_symbols); | |
10312 | ||
10313 | xfree (package_name); | |
10314 | } | |
10315 | } | |
10316 | ||
c9317f21 TT |
10317 | /* Allocate a fully-qualified name consisting of the two parts on the |
10318 | obstack. */ | |
10319 | ||
10320 | static const char * | |
10321 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
10322 | { | |
10323 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
10324 | } | |
10325 | ||
10326 | /* A helper that allocates a struct discriminant_info to attach to a | |
10327 | union type. */ | |
10328 | ||
10329 | static struct discriminant_info * | |
10330 | alloc_discriminant_info (struct type *type, int discriminant_index, | |
10331 | int default_index) | |
10332 | { | |
10333 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
c7b15a66 TT |
10334 | gdb_assert (discriminant_index == -1 |
10335 | || (discriminant_index >= 0 | |
10336 | && discriminant_index < TYPE_NFIELDS (type))); | |
c9317f21 | 10337 | gdb_assert (default_index == -1 |
c7b15a66 | 10338 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 TT |
10339 | |
10340 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
10341 | ||
10342 | struct discriminant_info *disc | |
10343 | = ((struct discriminant_info *) | |
10344 | TYPE_ZALLOC (type, | |
10345 | offsetof (struct discriminant_info, discriminants) | |
10346 | + TYPE_NFIELDS (type) * sizeof (disc->discriminants[0]))); | |
10347 | disc->default_index = default_index; | |
10348 | disc->discriminant_index = discriminant_index; | |
10349 | ||
10350 | struct dynamic_prop prop; | |
10351 | prop.kind = PROP_UNDEFINED; | |
10352 | prop.data.baton = disc; | |
10353 | ||
10354 | add_dyn_prop (DYN_PROP_DISCRIMINATED, prop, type); | |
10355 | ||
10356 | return disc; | |
10357 | } | |
10358 | ||
10359 | /* Some versions of rustc emitted enums in an unusual way. | |
10360 | ||
10361 | Ordinary enums were emitted as unions. The first element of each | |
10362 | structure in the union was named "RUST$ENUM$DISR". This element | |
10363 | held the discriminant. | |
10364 | ||
10365 | These versions of Rust also implemented the "non-zero" | |
10366 | optimization. When the enum had two values, and one is empty and | |
10367 | the other holds a pointer that cannot be zero, the pointer is used | |
10368 | as the discriminant, with a zero value meaning the empty variant. | |
10369 | Here, the union's first member is of the form | |
10370 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
10371 | where the fieldnos are the indices of the fields that should be | |
10372 | traversed in order to find the field (which may be several fields deep) | |
10373 | and the variantname is the name of the variant of the case when the | |
10374 | field is zero. | |
10375 | ||
10376 | This function recognizes whether TYPE is of one of these forms, | |
10377 | and, if so, smashes it to be a variant type. */ | |
10378 | ||
10379 | static void | |
10380 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
10381 | { | |
10382 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
10383 | ||
10384 | /* We don't need to deal with empty enums. */ | |
10385 | if (TYPE_NFIELDS (type) == 0) | |
10386 | return; | |
10387 | ||
10388 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
10389 | if (TYPE_NFIELDS (type) == 1 | |
10390 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
10391 | { | |
10392 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
10393 | ||
10394 | /* Decode the field name to find the offset of the | |
10395 | discriminant. */ | |
10396 | ULONGEST bit_offset = 0; | |
10397 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
10398 | while (name[0] >= '0' && name[0] <= '9') | |
10399 | { | |
10400 | char *tail; | |
10401 | unsigned long index = strtoul (name, &tail, 10); | |
10402 | name = tail; | |
10403 | if (*name != '$' | |
10404 | || index >= TYPE_NFIELDS (field_type) | |
10405 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
10406 | != FIELD_LOC_KIND_BITPOS)) | |
10407 | { | |
10408 | complaint (&symfile_complaints, | |
10409 | _("Could not parse Rust enum encoding string \"%s\"" | |
10410 | "[in module %s]"), | |
10411 | TYPE_FIELD_NAME (type, 0), | |
10412 | objfile_name (objfile)); | |
10413 | return; | |
10414 | } | |
10415 | ++name; | |
10416 | ||
10417 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
10418 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
10419 | } | |
10420 | ||
10421 | /* Make a union to hold the variants. */ | |
10422 | struct type *union_type = alloc_type (objfile); | |
10423 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10424 | TYPE_NFIELDS (union_type) = 3; | |
10425 | TYPE_FIELDS (union_type) | |
10426 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); | |
10427 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
10428 | ||
10429 | /* Put the discriminant must at index 0. */ | |
10430 | TYPE_FIELD_TYPE (union_type, 0) = field_type; | |
10431 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10432 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10433 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 0), bit_offset); | |
10434 | ||
10435 | /* The order of fields doesn't really matter, so put the real | |
10436 | field at index 1 and the data-less field at index 2. */ | |
10437 | struct discriminant_info *disc | |
10438 | = alloc_discriminant_info (union_type, 0, 1); | |
10439 | TYPE_FIELD (union_type, 1) = TYPE_FIELD (type, 0); | |
10440 | TYPE_FIELD_NAME (union_type, 1) | |
10441 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1))); | |
10442 | TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1)) | |
10443 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
10444 | TYPE_FIELD_NAME (union_type, 1)); | |
10445 | ||
10446 | const char *dataless_name | |
10447 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
10448 | name); | |
10449 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
10450 | dataless_name); | |
10451 | TYPE_FIELD_TYPE (union_type, 2) = dataless_type; | |
10452 | /* NAME points into the original discriminant name, which | |
10453 | already has the correct lifetime. */ | |
10454 | TYPE_FIELD_NAME (union_type, 2) = name; | |
10455 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 2), 0); | |
10456 | disc->discriminants[2] = 0; | |
10457 | ||
10458 | /* Smash this type to be a structure type. We have to do this | |
10459 | because the type has already been recorded. */ | |
10460 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10461 | TYPE_NFIELDS (type) = 1; | |
10462 | TYPE_FIELDS (type) | |
10463 | = (struct field *) TYPE_ZALLOC (type, sizeof (struct field)); | |
10464 | ||
10465 | /* Install the variant part. */ | |
10466 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10467 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10468 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10469 | } | |
10470 | else if (TYPE_NFIELDS (type) == 1) | |
10471 | { | |
10472 | /* We assume that a union with a single field is a univariant | |
10473 | enum. */ | |
10474 | /* Smash this type to be a structure type. We have to do this | |
10475 | because the type has already been recorded. */ | |
10476 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10477 | ||
10478 | /* Make a union to hold the variants. */ | |
10479 | struct type *union_type = alloc_type (objfile); | |
10480 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10481 | TYPE_NFIELDS (union_type) = TYPE_NFIELDS (type); | |
10482 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
10483 | TYPE_FIELDS (union_type) = TYPE_FIELDS (type); | |
10484 | ||
10485 | struct type *field_type = TYPE_FIELD_TYPE (union_type, 0); | |
10486 | const char *variant_name | |
10487 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
10488 | TYPE_FIELD_NAME (union_type, 0) = variant_name; | |
10489 | TYPE_NAME (field_type) | |
10490 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 10491 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
10492 | |
10493 | /* Install the union in the outer struct type. */ | |
10494 | TYPE_NFIELDS (type) = 1; | |
10495 | TYPE_FIELDS (type) | |
10496 | = (struct field *) TYPE_ZALLOC (union_type, sizeof (struct field)); | |
10497 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10498 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10499 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10500 | ||
10501 | alloc_discriminant_info (union_type, -1, 0); | |
10502 | } | |
10503 | else | |
10504 | { | |
10505 | struct type *disr_type = nullptr; | |
10506 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
10507 | { | |
10508 | disr_type = TYPE_FIELD_TYPE (type, i); | |
10509 | ||
10510 | if (TYPE_NFIELDS (disr_type) == 0) | |
10511 | { | |
10512 | /* Could be data-less variant, so keep going. */ | |
10513 | } | |
10514 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
10515 | "RUST$ENUM$DISR") != 0) | |
10516 | { | |
10517 | /* Not a Rust enum. */ | |
10518 | return; | |
10519 | } | |
10520 | else | |
10521 | { | |
10522 | /* Found one. */ | |
10523 | break; | |
10524 | } | |
10525 | } | |
10526 | ||
10527 | /* If we got here without a discriminant, then it's probably | |
10528 | just a union. */ | |
10529 | if (disr_type == nullptr) | |
10530 | return; | |
10531 | ||
10532 | /* Smash this type to be a structure type. We have to do this | |
10533 | because the type has already been recorded. */ | |
10534 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10535 | ||
10536 | /* Make a union to hold the variants. */ | |
10537 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); | |
10538 | struct type *union_type = alloc_type (objfile); | |
10539 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10540 | TYPE_NFIELDS (union_type) = 1 + TYPE_NFIELDS (type); | |
10541 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
10542 | TYPE_FIELDS (union_type) | |
10543 | = (struct field *) TYPE_ZALLOC (union_type, | |
10544 | (TYPE_NFIELDS (union_type) | |
10545 | * sizeof (struct field))); | |
10546 | ||
10547 | memcpy (TYPE_FIELDS (union_type) + 1, TYPE_FIELDS (type), | |
10548 | TYPE_NFIELDS (type) * sizeof (struct field)); | |
10549 | ||
10550 | /* Install the discriminant at index 0 in the union. */ | |
10551 | TYPE_FIELD (union_type, 0) = *disr_field; | |
10552 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10553 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10554 | ||
10555 | /* Install the union in the outer struct type. */ | |
10556 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10557 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10558 | TYPE_NFIELDS (type) = 1; | |
10559 | ||
10560 | /* Set the size and offset of the union type. */ | |
10561 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10562 | ||
10563 | /* We need a way to find the correct discriminant given a | |
10564 | variant name. For convenience we build a map here. */ | |
10565 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
10566 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
10567 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
10568 | { | |
10569 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
10570 | { | |
10571 | const char *name | |
10572 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
10573 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
10574 | } | |
10575 | } | |
10576 | ||
10577 | int n_fields = TYPE_NFIELDS (union_type); | |
10578 | struct discriminant_info *disc | |
10579 | = alloc_discriminant_info (union_type, 0, -1); | |
10580 | /* Skip the discriminant here. */ | |
10581 | for (int i = 1; i < n_fields; ++i) | |
10582 | { | |
10583 | /* Find the final word in the name of this variant's type. | |
10584 | That name can be used to look up the correct | |
10585 | discriminant. */ | |
10586 | const char *variant_name | |
10587 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, | |
10588 | i))); | |
10589 | ||
10590 | auto iter = discriminant_map.find (variant_name); | |
10591 | if (iter != discriminant_map.end ()) | |
10592 | disc->discriminants[i] = iter->second; | |
10593 | ||
10594 | /* Remove the discriminant field. */ | |
10595 | struct type *sub_type = TYPE_FIELD_TYPE (union_type, i); | |
10596 | --TYPE_NFIELDS (sub_type); | |
10597 | ++TYPE_FIELDS (sub_type); | |
10598 | TYPE_FIELD_NAME (union_type, i) = variant_name; | |
10599 | TYPE_NAME (sub_type) | |
10600 | = rust_fully_qualify (&objfile->objfile_obstack, | |
10601 | TYPE_NAME (type), variant_name); | |
10602 | } | |
10603 | } | |
10604 | } | |
10605 | ||
10606 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
10607 | ||
10608 | static void | |
10609 | rust_union_quirks (struct dwarf2_cu *cu) | |
10610 | { | |
10611 | gdb_assert (cu->language == language_rust); | |
10612 | for (struct type *type : cu->rust_unions) | |
10613 | quirk_rust_enum (type, cu->per_cu->dwarf2_per_objfile->objfile); | |
10614 | } | |
10615 | ||
95554aad TT |
10616 | /* Return the symtab for PER_CU. This works properly regardless of |
10617 | whether we're using the index or psymtabs. */ | |
10618 | ||
43f3e411 DE |
10619 | static struct compunit_symtab * |
10620 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 10621 | { |
ed2dc618 | 10622 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
10623 | ? per_cu->v.quick->compunit_symtab |
10624 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
10625 | } |
10626 | ||
10627 | /* A helper function for computing the list of all symbol tables | |
10628 | included by PER_CU. */ | |
10629 | ||
10630 | static void | |
43f3e411 | 10631 | recursively_compute_inclusions (VEC (compunit_symtab_ptr) **result, |
ec94af83 | 10632 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 10633 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 10634 | struct compunit_symtab *immediate_parent) |
95554aad TT |
10635 | { |
10636 | void **slot; | |
10637 | int ix; | |
43f3e411 | 10638 | struct compunit_symtab *cust; |
95554aad TT |
10639 | struct dwarf2_per_cu_data *iter; |
10640 | ||
10641 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
10642 | if (*slot != NULL) | |
10643 | { | |
10644 | /* This inclusion and its children have been processed. */ | |
10645 | return; | |
10646 | } | |
10647 | ||
10648 | *slot = per_cu; | |
10649 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
10650 | cust = get_compunit_symtab (per_cu); |
10651 | if (cust != NULL) | |
ec94af83 DE |
10652 | { |
10653 | /* If this is a type unit only add its symbol table if we haven't | |
10654 | seen it yet (type unit per_cu's can share symtabs). */ | |
10655 | if (per_cu->is_debug_types) | |
10656 | { | |
43f3e411 | 10657 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
10658 | if (*slot == NULL) |
10659 | { | |
43f3e411 DE |
10660 | *slot = cust; |
10661 | VEC_safe_push (compunit_symtab_ptr, *result, cust); | |
10662 | if (cust->user == NULL) | |
10663 | cust->user = immediate_parent; | |
ec94af83 DE |
10664 | } |
10665 | } | |
10666 | else | |
f9125b6c | 10667 | { |
43f3e411 DE |
10668 | VEC_safe_push (compunit_symtab_ptr, *result, cust); |
10669 | if (cust->user == NULL) | |
10670 | cust->user = immediate_parent; | |
f9125b6c | 10671 | } |
ec94af83 | 10672 | } |
95554aad TT |
10673 | |
10674 | for (ix = 0; | |
796a7ff8 | 10675 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 10676 | ++ix) |
ec94af83 DE |
10677 | { |
10678 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 10679 | all_type_symtabs, iter, cust); |
ec94af83 | 10680 | } |
95554aad TT |
10681 | } |
10682 | ||
43f3e411 | 10683 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
10684 | PER_CU. */ |
10685 | ||
10686 | static void | |
43f3e411 | 10687 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 10688 | { |
f4dc4d17 DE |
10689 | gdb_assert (! per_cu->is_debug_types); |
10690 | ||
796a7ff8 | 10691 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
10692 | { |
10693 | int ix, len; | |
ec94af83 | 10694 | struct dwarf2_per_cu_data *per_cu_iter; |
43f3e411 DE |
10695 | struct compunit_symtab *compunit_symtab_iter; |
10696 | VEC (compunit_symtab_ptr) *result_symtabs = NULL; | |
ec94af83 | 10697 | htab_t all_children, all_type_symtabs; |
43f3e411 | 10698 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
10699 | |
10700 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 10701 | if (cust == NULL) |
95554aad TT |
10702 | return; |
10703 | ||
10704 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
10705 | NULL, xcalloc, xfree); | |
ec94af83 DE |
10706 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
10707 | NULL, xcalloc, xfree); | |
95554aad TT |
10708 | |
10709 | for (ix = 0; | |
796a7ff8 | 10710 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 10711 | ix, per_cu_iter); |
95554aad | 10712 | ++ix) |
ec94af83 DE |
10713 | { |
10714 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 10715 | all_type_symtabs, per_cu_iter, |
43f3e411 | 10716 | cust); |
ec94af83 | 10717 | } |
95554aad | 10718 | |
ec94af83 | 10719 | /* Now we have a transitive closure of all the included symtabs. */ |
43f3e411 DE |
10720 | len = VEC_length (compunit_symtab_ptr, result_symtabs); |
10721 | cust->includes | |
ed2dc618 | 10722 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 10723 | struct compunit_symtab *, len + 1); |
95554aad | 10724 | for (ix = 0; |
43f3e411 DE |
10725 | VEC_iterate (compunit_symtab_ptr, result_symtabs, ix, |
10726 | compunit_symtab_iter); | |
95554aad | 10727 | ++ix) |
43f3e411 DE |
10728 | cust->includes[ix] = compunit_symtab_iter; |
10729 | cust->includes[len] = NULL; | |
95554aad | 10730 | |
43f3e411 | 10731 | VEC_free (compunit_symtab_ptr, result_symtabs); |
95554aad | 10732 | htab_delete (all_children); |
ec94af83 | 10733 | htab_delete (all_type_symtabs); |
95554aad TT |
10734 | } |
10735 | } | |
10736 | ||
10737 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
10738 | read. */ | |
10739 | ||
10740 | static void | |
ed2dc618 | 10741 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad TT |
10742 | { |
10743 | int ix; | |
10744 | struct dwarf2_per_cu_data *iter; | |
10745 | ||
10746 | for (ix = 0; | |
10747 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
10748 | ix, iter); | |
10749 | ++ix) | |
f4dc4d17 DE |
10750 | { |
10751 | if (! iter->is_debug_types) | |
43f3e411 | 10752 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 10753 | } |
95554aad TT |
10754 | |
10755 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
10756 | } | |
10757 | ||
9cdd5dbd | 10758 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
10759 | already been loaded into memory. */ |
10760 | ||
10761 | static void | |
95554aad TT |
10762 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
10763 | enum language pretend_language) | |
10b3939b | 10764 | { |
10b3939b | 10765 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
10766 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10767 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 10768 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 10769 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10770 | struct compunit_symtab *cust; |
10b3939b | 10771 | CORE_ADDR baseaddr; |
4359dff1 | 10772 | struct block *static_block; |
3e29f34a | 10773 | CORE_ADDR addr; |
10b3939b DJ |
10774 | |
10775 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
10776 | ||
10b3939b | 10777 | buildsym_init (); |
33c7c59d | 10778 | scoped_free_pendings free_pending; |
c89b44cd TT |
10779 | |
10780 | /* Clear the list here in case something was left over. */ | |
10781 | cu->method_list.clear (); | |
10b3939b DJ |
10782 | |
10783 | cu->list_in_scope = &file_symbols; | |
c906108c | 10784 | |
95554aad TT |
10785 | cu->language = pretend_language; |
10786 | cu->language_defn = language_def (cu->language); | |
10787 | ||
c906108c | 10788 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10789 | process_die (cu->dies, cu); |
c906108c | 10790 | |
a766d390 DE |
10791 | /* For now fudge the Go package. */ |
10792 | if (cu->language == language_go) | |
10793 | fixup_go_packaging (cu); | |
10794 | ||
3da10d80 KS |
10795 | /* Now that we have processed all the DIEs in the CU, all the types |
10796 | should be complete, and it should now be safe to compute all of the | |
10797 | physnames. */ | |
10798 | compute_delayed_physnames (cu); | |
3da10d80 | 10799 | |
c9317f21 TT |
10800 | if (cu->language == language_rust) |
10801 | rust_union_quirks (cu); | |
10802 | ||
fae299cd DC |
10803 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10804 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10805 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10806 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10807 | |
3e29f34a MR |
10808 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
10809 | static_block = end_symtab_get_static_block (addr, 0, 1); | |
4359dff1 JK |
10810 | |
10811 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10812 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10813 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10814 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10815 | this comp unit. */ | |
10816 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10817 | ||
43f3e411 DE |
10818 | cust = end_symtab_from_static_block (static_block, |
10819 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 10820 | |
43f3e411 | 10821 | if (cust != NULL) |
c906108c | 10822 | { |
df15bd07 | 10823 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10824 | |
8be455d7 JK |
10825 | /* Set symtab language to language from DW_AT_language. If the |
10826 | compilation is from a C file generated by language preprocessors, do | |
10827 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10828 | if (!(cu->language == language_c |
40e3ad0e | 10829 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10830 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10831 | |
10832 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10833 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10834 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10835 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10836 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10837 | |
10838 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10839 | needed, it would be wrong due to missing DW_AT_producer there. | |
10840 | ||
10841 | Still one can confuse GDB by using non-standard GCC compilation | |
10842 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
10843 | */ | |
ab260dad | 10844 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10845 | cust->locations_valid = 1; |
e0d00bc7 JK |
10846 | |
10847 | if (gcc_4_minor >= 5) | |
43f3e411 | 10848 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10849 | |
43f3e411 | 10850 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10851 | } |
9291a0cd TT |
10852 | |
10853 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10854 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
10855 | else |
10856 | { | |
10857 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10858 | pst->compunit_symtab = cust; |
9291a0cd TT |
10859 | pst->readin = 1; |
10860 | } | |
c906108c | 10861 | |
95554aad TT |
10862 | /* Push it for inclusion processing later. */ |
10863 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
f4dc4d17 | 10864 | } |
45cfd468 | 10865 | |
f4dc4d17 DE |
10866 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
10867 | already been loaded into memory. */ | |
10868 | ||
10869 | static void | |
10870 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
10871 | enum language pretend_language) | |
10872 | { | |
10873 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
10874 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10875 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 10876 | struct compunit_symtab *cust; |
0186c6a7 DE |
10877 | struct signatured_type *sig_type; |
10878 | ||
10879 | gdb_assert (per_cu->is_debug_types); | |
10880 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
10881 | |
10882 | buildsym_init (); | |
33c7c59d | 10883 | scoped_free_pendings free_pending; |
c89b44cd TT |
10884 | |
10885 | /* Clear the list here in case something was left over. */ | |
10886 | cu->method_list.clear (); | |
f4dc4d17 DE |
10887 | |
10888 | cu->list_in_scope = &file_symbols; | |
10889 | ||
10890 | cu->language = pretend_language; | |
10891 | cu->language_defn = language_def (cu->language); | |
10892 | ||
10893 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10894 | process_die (cu->dies, cu); | |
10895 | ||
10896 | /* For now fudge the Go package. */ | |
10897 | if (cu->language == language_go) | |
10898 | fixup_go_packaging (cu); | |
10899 | ||
10900 | /* Now that we have processed all the DIEs in the CU, all the types | |
10901 | should be complete, and it should now be safe to compute all of the | |
10902 | physnames. */ | |
10903 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10904 | |
c9317f21 TT |
10905 | if (cu->language == language_rust) |
10906 | rust_union_quirks (cu); | |
10907 | ||
f4dc4d17 DE |
10908 | /* TUs share symbol tables. |
10909 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10910 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10911 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 10912 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 10913 | { |
43f3e411 DE |
10914 | cust = end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); |
10915 | sig_type->type_unit_group->compunit_symtab = cust; | |
f4dc4d17 | 10916 | |
43f3e411 | 10917 | if (cust != NULL) |
f4dc4d17 DE |
10918 | { |
10919 | /* Set symtab language to language from DW_AT_language. If the | |
10920 | compilation is from a C file generated by language preprocessors, | |
10921 | do not set the language if it was already deduced by | |
10922 | start_subfile. */ | |
43f3e411 DE |
10923 | if (!(cu->language == language_c |
10924 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10925 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10926 | } |
10927 | } | |
10928 | else | |
10929 | { | |
0ab9ce85 | 10930 | augment_type_symtab (); |
43f3e411 | 10931 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
10932 | } |
10933 | ||
10934 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10935 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
10936 | else |
10937 | { | |
10938 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10939 | pst->compunit_symtab = cust; |
f4dc4d17 | 10940 | pst->readin = 1; |
45cfd468 | 10941 | } |
c906108c SS |
10942 | } |
10943 | ||
95554aad TT |
10944 | /* Process an imported unit DIE. */ |
10945 | ||
10946 | static void | |
10947 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10948 | { | |
10949 | struct attribute *attr; | |
10950 | ||
f4dc4d17 DE |
10951 | /* For now we don't handle imported units in type units. */ |
10952 | if (cu->per_cu->is_debug_types) | |
10953 | { | |
10954 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10955 | " supported in type units [in module %s]"), | |
518817b3 | 10956 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
10957 | } |
10958 | ||
95554aad TT |
10959 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10960 | if (attr != NULL) | |
10961 | { | |
9c541725 PA |
10962 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
10963 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); | |
10964 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 10965 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 10966 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 10967 | |
69d751e3 | 10968 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad TT |
10969 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
10970 | load_full_comp_unit (per_cu, cu->language); | |
10971 | ||
796a7ff8 | 10972 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
10973 | per_cu); |
10974 | } | |
10975 | } | |
10976 | ||
4c8aa72d PA |
10977 | /* RAII object that represents a process_die scope: i.e., |
10978 | starts/finishes processing a DIE. */ | |
10979 | class process_die_scope | |
adde2bff | 10980 | { |
4c8aa72d PA |
10981 | public: |
10982 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10983 | : m_die (die), m_cu (cu) | |
10984 | { | |
10985 | /* We should only be processing DIEs not already in process. */ | |
10986 | gdb_assert (!m_die->in_process); | |
10987 | m_die->in_process = true; | |
10988 | } | |
8c3cb9fa | 10989 | |
4c8aa72d PA |
10990 | ~process_die_scope () |
10991 | { | |
10992 | m_die->in_process = false; | |
10993 | ||
10994 | /* If we're done processing the DIE for the CU that owns the line | |
10995 | header, we don't need the line header anymore. */ | |
10996 | if (m_cu->line_header_die_owner == m_die) | |
10997 | { | |
10998 | delete m_cu->line_header; | |
10999 | m_cu->line_header = NULL; | |
11000 | m_cu->line_header_die_owner = NULL; | |
11001 | } | |
11002 | } | |
11003 | ||
11004 | private: | |
11005 | die_info *m_die; | |
11006 | dwarf2_cu *m_cu; | |
11007 | }; | |
adde2bff | 11008 | |
c906108c SS |
11009 | /* Process a die and its children. */ |
11010 | ||
11011 | static void | |
e7c27a73 | 11012 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11013 | { |
4c8aa72d | 11014 | process_die_scope scope (die, cu); |
adde2bff | 11015 | |
c906108c SS |
11016 | switch (die->tag) |
11017 | { | |
11018 | case DW_TAG_padding: | |
11019 | break; | |
11020 | case DW_TAG_compile_unit: | |
95554aad | 11021 | case DW_TAG_partial_unit: |
e7c27a73 | 11022 | read_file_scope (die, cu); |
c906108c | 11023 | break; |
348e048f DE |
11024 | case DW_TAG_type_unit: |
11025 | read_type_unit_scope (die, cu); | |
11026 | break; | |
c906108c | 11027 | case DW_TAG_subprogram: |
c906108c | 11028 | case DW_TAG_inlined_subroutine: |
edb3359d | 11029 | read_func_scope (die, cu); |
c906108c SS |
11030 | break; |
11031 | case DW_TAG_lexical_block: | |
14898363 L |
11032 | case DW_TAG_try_block: |
11033 | case DW_TAG_catch_block: | |
e7c27a73 | 11034 | read_lexical_block_scope (die, cu); |
c906108c | 11035 | break; |
216f72a1 | 11036 | case DW_TAG_call_site: |
96408a79 SA |
11037 | case DW_TAG_GNU_call_site: |
11038 | read_call_site_scope (die, cu); | |
11039 | break; | |
c906108c | 11040 | case DW_TAG_class_type: |
680b30c7 | 11041 | case DW_TAG_interface_type: |
c906108c SS |
11042 | case DW_TAG_structure_type: |
11043 | case DW_TAG_union_type: | |
134d01f1 | 11044 | process_structure_scope (die, cu); |
c906108c SS |
11045 | break; |
11046 | case DW_TAG_enumeration_type: | |
134d01f1 | 11047 | process_enumeration_scope (die, cu); |
c906108c | 11048 | break; |
134d01f1 | 11049 | |
f792889a DJ |
11050 | /* These dies have a type, but processing them does not create |
11051 | a symbol or recurse to process the children. Therefore we can | |
11052 | read them on-demand through read_type_die. */ | |
c906108c | 11053 | case DW_TAG_subroutine_type: |
72019c9c | 11054 | case DW_TAG_set_type: |
c906108c | 11055 | case DW_TAG_array_type: |
c906108c | 11056 | case DW_TAG_pointer_type: |
c906108c | 11057 | case DW_TAG_ptr_to_member_type: |
c906108c | 11058 | case DW_TAG_reference_type: |
4297a3f0 | 11059 | case DW_TAG_rvalue_reference_type: |
c906108c | 11060 | case DW_TAG_string_type: |
c906108c | 11061 | break; |
134d01f1 | 11062 | |
c906108c | 11063 | case DW_TAG_base_type: |
a02abb62 | 11064 | case DW_TAG_subrange_type: |
cb249c71 | 11065 | case DW_TAG_typedef: |
134d01f1 DJ |
11066 | /* Add a typedef symbol for the type definition, if it has a |
11067 | DW_AT_name. */ | |
f792889a | 11068 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 11069 | break; |
c906108c | 11070 | case DW_TAG_common_block: |
e7c27a73 | 11071 | read_common_block (die, cu); |
c906108c SS |
11072 | break; |
11073 | case DW_TAG_common_inclusion: | |
11074 | break; | |
d9fa45fe | 11075 | case DW_TAG_namespace: |
4d4ec4e5 | 11076 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 11077 | read_namespace (die, cu); |
d9fa45fe | 11078 | break; |
5d7cb8df | 11079 | case DW_TAG_module: |
4d4ec4e5 | 11080 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
11081 | read_module (die, cu); |
11082 | break; | |
d9fa45fe | 11083 | case DW_TAG_imported_declaration: |
74921315 KS |
11084 | cu->processing_has_namespace_info = 1; |
11085 | if (read_namespace_alias (die, cu)) | |
11086 | break; | |
11087 | /* The declaration is not a global namespace alias: fall through. */ | |
d9fa45fe | 11088 | case DW_TAG_imported_module: |
4d4ec4e5 | 11089 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
11090 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
11091 | || cu->language != language_fortran)) | |
11092 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
11093 | dwarf_tag_name (die->tag)); | |
11094 | read_import_statement (die, cu); | |
d9fa45fe | 11095 | break; |
95554aad TT |
11096 | |
11097 | case DW_TAG_imported_unit: | |
11098 | process_imported_unit_die (die, cu); | |
11099 | break; | |
11100 | ||
71a3c369 TT |
11101 | case DW_TAG_variable: |
11102 | read_variable (die, cu); | |
11103 | break; | |
11104 | ||
c906108c | 11105 | default: |
e7c27a73 | 11106 | new_symbol (die, NULL, cu); |
c906108c SS |
11107 | break; |
11108 | } | |
11109 | } | |
ca69b9e6 DE |
11110 | \f |
11111 | /* DWARF name computation. */ | |
c906108c | 11112 | |
94af9270 KS |
11113 | /* A helper function for dwarf2_compute_name which determines whether DIE |
11114 | needs to have the name of the scope prepended to the name listed in the | |
11115 | die. */ | |
11116 | ||
11117 | static int | |
11118 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
11119 | { | |
1c809c68 TT |
11120 | struct attribute *attr; |
11121 | ||
94af9270 KS |
11122 | switch (die->tag) |
11123 | { | |
11124 | case DW_TAG_namespace: | |
11125 | case DW_TAG_typedef: | |
11126 | case DW_TAG_class_type: | |
11127 | case DW_TAG_interface_type: | |
11128 | case DW_TAG_structure_type: | |
11129 | case DW_TAG_union_type: | |
11130 | case DW_TAG_enumeration_type: | |
11131 | case DW_TAG_enumerator: | |
11132 | case DW_TAG_subprogram: | |
08a76f8a | 11133 | case DW_TAG_inlined_subroutine: |
94af9270 | 11134 | case DW_TAG_member: |
74921315 | 11135 | case DW_TAG_imported_declaration: |
94af9270 KS |
11136 | return 1; |
11137 | ||
11138 | case DW_TAG_variable: | |
c2b0a229 | 11139 | case DW_TAG_constant: |
94af9270 KS |
11140 | /* We only need to prefix "globally" visible variables. These include |
11141 | any variable marked with DW_AT_external or any variable that | |
11142 | lives in a namespace. [Variables in anonymous namespaces | |
11143 | require prefixing, but they are not DW_AT_external.] */ | |
11144 | ||
11145 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
11146 | { | |
11147 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 11148 | |
94af9270 KS |
11149 | return die_needs_namespace (die_specification (die, &spec_cu), |
11150 | spec_cu); | |
11151 | } | |
11152 | ||
1c809c68 | 11153 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
11154 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
11155 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
11156 | return 0; |
11157 | /* A variable in a lexical block of some kind does not need a | |
11158 | namespace, even though in C++ such variables may be external | |
11159 | and have a mangled name. */ | |
11160 | if (die->parent->tag == DW_TAG_lexical_block | |
11161 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
11162 | || die->parent->tag == DW_TAG_catch_block |
11163 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
11164 | return 0; |
11165 | return 1; | |
94af9270 KS |
11166 | |
11167 | default: | |
11168 | return 0; | |
11169 | } | |
11170 | } | |
11171 | ||
73b9be8b KS |
11172 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
11173 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
11174 | defined for the given DIE. */ | |
11175 | ||
11176 | static struct attribute * | |
11177 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
11178 | { | |
11179 | struct attribute *attr; | |
11180 | ||
11181 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
11182 | if (attr == NULL) | |
11183 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
11184 | ||
11185 | return attr; | |
11186 | } | |
11187 | ||
11188 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
11189 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
11190 | defined for the given DIE. */ | |
11191 | ||
11192 | static const char * | |
11193 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
11194 | { | |
11195 | const char *linkage_name; | |
11196 | ||
11197 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
11198 | if (linkage_name == NULL) | |
11199 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
11200 | ||
11201 | return linkage_name; | |
11202 | } | |
11203 | ||
94af9270 | 11204 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 11205 | compute the physname for the object, which include a method's: |
9c37b5ae | 11206 | - formal parameters (C++), |
a766d390 | 11207 | - receiver type (Go), |
a766d390 DE |
11208 | |
11209 | The term "physname" is a bit confusing. | |
11210 | For C++, for example, it is the demangled name. | |
11211 | For Go, for example, it's the mangled name. | |
94af9270 | 11212 | |
af6b7be1 JB |
11213 | For Ada, return the DIE's linkage name rather than the fully qualified |
11214 | name. PHYSNAME is ignored.. | |
11215 | ||
94af9270 KS |
11216 | The result is allocated on the objfile_obstack and canonicalized. */ |
11217 | ||
11218 | static const char * | |
15d034d0 TT |
11219 | dwarf2_compute_name (const char *name, |
11220 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
11221 | int physname) |
11222 | { | |
518817b3 | 11223 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 11224 | |
94af9270 KS |
11225 | if (name == NULL) |
11226 | name = dwarf2_name (die, cu); | |
11227 | ||
2ee7123e DE |
11228 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
11229 | but otherwise compute it by typename_concat inside GDB. | |
11230 | FIXME: Actually this is not really true, or at least not always true. | |
11231 | It's all very confusing. SYMBOL_SET_NAMES doesn't try to demangle | |
5e2db402 | 11232 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
11233 | will set the demangled name to the result of dwarf2_full_name, and it is |
11234 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
11235 | if (cu->language == language_ada |
11236 | || (cu->language == language_fortran && physname)) | |
11237 | { | |
11238 | /* For Ada unit, we prefer the linkage name over the name, as | |
11239 | the former contains the exported name, which the user expects | |
11240 | to be able to reference. Ideally, we want the user to be able | |
11241 | to reference this entity using either natural or linkage name, | |
11242 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 11243 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 11244 | |
2ee7123e DE |
11245 | if (linkage_name != NULL) |
11246 | return linkage_name; | |
f55ee35c JK |
11247 | } |
11248 | ||
94af9270 KS |
11249 | /* These are the only languages we know how to qualify names in. */ |
11250 | if (name != NULL | |
9c37b5ae | 11251 | && (cu->language == language_cplus |
c44af4eb TT |
11252 | || cu->language == language_fortran || cu->language == language_d |
11253 | || cu->language == language_rust)) | |
94af9270 KS |
11254 | { |
11255 | if (die_needs_namespace (die, cu)) | |
11256 | { | |
0d5cff50 | 11257 | const char *prefix; |
34a68019 | 11258 | const char *canonical_name = NULL; |
94af9270 | 11259 | |
d7e74731 PA |
11260 | string_file buf; |
11261 | ||
94af9270 | 11262 | prefix = determine_prefix (die, cu); |
94af9270 KS |
11263 | if (*prefix != '\0') |
11264 | { | |
f55ee35c JK |
11265 | char *prefixed_name = typename_concat (NULL, prefix, name, |
11266 | physname, cu); | |
9a619af0 | 11267 | |
d7e74731 | 11268 | buf.puts (prefixed_name); |
94af9270 KS |
11269 | xfree (prefixed_name); |
11270 | } | |
11271 | else | |
d7e74731 | 11272 | buf.puts (name); |
94af9270 | 11273 | |
98bfdba5 PA |
11274 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
11275 | as children with DW_TAG_template_type_param or | |
11276 | DW_TAG_value_type_param. If the latter, add them to the name | |
11277 | here. If the name already has template parameters, then | |
11278 | skip this step; some versions of GCC emit both, and | |
11279 | it is more efficient to use the pre-computed name. | |
11280 | ||
11281 | Something to keep in mind about this process: it is very | |
11282 | unlikely, or in some cases downright impossible, to produce | |
11283 | something that will match the mangled name of a function. | |
11284 | If the definition of the function has the same debug info, | |
11285 | we should be able to match up with it anyway. But fallbacks | |
11286 | using the minimal symbol, for instance to find a method | |
11287 | implemented in a stripped copy of libstdc++, will not work. | |
11288 | If we do not have debug info for the definition, we will have to | |
11289 | match them up some other way. | |
11290 | ||
11291 | When we do name matching there is a related problem with function | |
11292 | templates; two instantiated function templates are allowed to | |
11293 | differ only by their return types, which we do not add here. */ | |
11294 | ||
11295 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
11296 | { | |
11297 | struct attribute *attr; | |
11298 | struct die_info *child; | |
11299 | int first = 1; | |
11300 | ||
11301 | die->building_fullname = 1; | |
11302 | ||
11303 | for (child = die->child; child != NULL; child = child->sibling) | |
11304 | { | |
11305 | struct type *type; | |
12df843f | 11306 | LONGEST value; |
d521ce57 | 11307 | const gdb_byte *bytes; |
98bfdba5 PA |
11308 | struct dwarf2_locexpr_baton *baton; |
11309 | struct value *v; | |
11310 | ||
11311 | if (child->tag != DW_TAG_template_type_param | |
11312 | && child->tag != DW_TAG_template_value_param) | |
11313 | continue; | |
11314 | ||
11315 | if (first) | |
11316 | { | |
d7e74731 | 11317 | buf.puts ("<"); |
98bfdba5 PA |
11318 | first = 0; |
11319 | } | |
11320 | else | |
d7e74731 | 11321 | buf.puts (", "); |
98bfdba5 PA |
11322 | |
11323 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
11324 | if (attr == NULL) | |
11325 | { | |
11326 | complaint (&symfile_complaints, | |
11327 | _("template parameter missing DW_AT_type")); | |
d7e74731 | 11328 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
11329 | continue; |
11330 | } | |
11331 | type = die_type (child, cu); | |
11332 | ||
11333 | if (child->tag == DW_TAG_template_type_param) | |
11334 | { | |
d7e74731 | 11335 | c_print_type (type, "", &buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
11336 | continue; |
11337 | } | |
11338 | ||
11339 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
11340 | if (attr == NULL) | |
11341 | { | |
11342 | complaint (&symfile_complaints, | |
3e43a32a MS |
11343 | _("template parameter missing " |
11344 | "DW_AT_const_value")); | |
d7e74731 | 11345 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
11346 | continue; |
11347 | } | |
11348 | ||
11349 | dwarf2_const_value_attr (attr, type, name, | |
11350 | &cu->comp_unit_obstack, cu, | |
11351 | &value, &bytes, &baton); | |
11352 | ||
11353 | if (TYPE_NOSIGN (type)) | |
11354 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
11355 | changed, this can use value_print instead. */ | |
d7e74731 | 11356 | c_printchar (value, type, &buf); |
98bfdba5 PA |
11357 | else |
11358 | { | |
11359 | struct value_print_options opts; | |
11360 | ||
11361 | if (baton != NULL) | |
11362 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
11363 | baton->data, | |
11364 | baton->size, | |
11365 | baton->per_cu); | |
11366 | else if (bytes != NULL) | |
11367 | { | |
11368 | v = allocate_value (type); | |
11369 | memcpy (value_contents_writeable (v), bytes, | |
11370 | TYPE_LENGTH (type)); | |
11371 | } | |
11372 | else | |
11373 | v = value_from_longest (type, value); | |
11374 | ||
3e43a32a MS |
11375 | /* Specify decimal so that we do not depend on |
11376 | the radix. */ | |
98bfdba5 PA |
11377 | get_formatted_print_options (&opts, 'd'); |
11378 | opts.raw = 1; | |
d7e74731 | 11379 | value_print (v, &buf, &opts); |
98bfdba5 PA |
11380 | release_value (v); |
11381 | value_free (v); | |
11382 | } | |
11383 | } | |
11384 | ||
11385 | die->building_fullname = 0; | |
11386 | ||
11387 | if (!first) | |
11388 | { | |
11389 | /* Close the argument list, with a space if necessary | |
11390 | (nested templates). */ | |
d7e74731 PA |
11391 | if (!buf.empty () && buf.string ().back () == '>') |
11392 | buf.puts (" >"); | |
98bfdba5 | 11393 | else |
d7e74731 | 11394 | buf.puts (">"); |
98bfdba5 PA |
11395 | } |
11396 | } | |
11397 | ||
9c37b5ae | 11398 | /* For C++ methods, append formal parameter type |
94af9270 | 11399 | information, if PHYSNAME. */ |
6e70227d | 11400 | |
94af9270 | 11401 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 11402 | && cu->language == language_cplus) |
94af9270 KS |
11403 | { |
11404 | struct type *type = read_type_die (die, cu); | |
11405 | ||
d7e74731 | 11406 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 11407 | &type_print_raw_options); |
94af9270 | 11408 | |
9c37b5ae | 11409 | if (cu->language == language_cplus) |
94af9270 | 11410 | { |
60430eff DJ |
11411 | /* Assume that an artificial first parameter is |
11412 | "this", but do not crash if it is not. RealView | |
11413 | marks unnamed (and thus unused) parameters as | |
11414 | artificial; there is no way to differentiate | |
11415 | the two cases. */ | |
94af9270 KS |
11416 | if (TYPE_NFIELDS (type) > 0 |
11417 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 11418 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
11419 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
11420 | 0)))) | |
d7e74731 | 11421 | buf.puts (" const"); |
94af9270 KS |
11422 | } |
11423 | } | |
11424 | ||
d7e74731 | 11425 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
11426 | |
11427 | if (cu->language == language_cplus) | |
34a68019 | 11428 | canonical_name |
322a8516 | 11429 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
11430 | &objfile->per_bfd->storage_obstack); |
11431 | ||
11432 | /* If we only computed INTERMEDIATE_NAME, or if | |
11433 | INTERMEDIATE_NAME is already canonical, then we need to | |
11434 | copy it to the appropriate obstack. */ | |
322a8516 | 11435 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
224c3ddb SM |
11436 | name = ((const char *) |
11437 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
322a8516 PA |
11438 | intermediate_name.c_str (), |
11439 | intermediate_name.length ())); | |
34a68019 TT |
11440 | else |
11441 | name = canonical_name; | |
94af9270 KS |
11442 | } |
11443 | } | |
11444 | ||
11445 | return name; | |
11446 | } | |
11447 | ||
0114d602 DJ |
11448 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
11449 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 11450 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
11451 | not have a name. NAME may either be from a previous call to |
11452 | dwarf2_name or NULL. | |
11453 | ||
9c37b5ae | 11454 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
11455 | |
11456 | static const char * | |
15d034d0 | 11457 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 11458 | { |
94af9270 KS |
11459 | return dwarf2_compute_name (name, die, cu, 0); |
11460 | } | |
0114d602 | 11461 | |
94af9270 KS |
11462 | /* Construct a physname for the given DIE in CU. NAME may either be |
11463 | from a previous call to dwarf2_name or NULL. The result will be | |
11464 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
11465 | name. | |
0114d602 | 11466 | |
9c37b5ae | 11467 | The output string will be canonicalized (if C++). */ |
0114d602 | 11468 | |
94af9270 | 11469 | static const char * |
15d034d0 | 11470 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 11471 | { |
518817b3 | 11472 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 11473 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
11474 | int need_copy = 1; |
11475 | ||
11476 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
11477 | on its own. */ | |
11478 | if (!die_needs_namespace (die, cu)) | |
11479 | return dwarf2_compute_name (name, die, cu, 1); | |
11480 | ||
73b9be8b | 11481 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 11482 | |
e98c9e7c TT |
11483 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
11484 | See https://github.com/rust-lang/rust/issues/32925. */ | |
11485 | if (cu->language == language_rust && mangled != NULL | |
11486 | && strchr (mangled, '{') != NULL) | |
11487 | mangled = NULL; | |
11488 | ||
900e11f9 JK |
11489 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
11490 | has computed. */ | |
791afaa2 | 11491 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 11492 | if (mangled != NULL) |
900e11f9 | 11493 | { |
900e11f9 | 11494 | |
a766d390 DE |
11495 | if (cu->language == language_go) |
11496 | { | |
5e2db402 TT |
11497 | /* This is a lie, but we already lie to the caller new_symbol. |
11498 | new_symbol assumes we return the mangled name. | |
a766d390 | 11499 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
11500 | } |
11501 | else | |
11502 | { | |
0eb876f5 JB |
11503 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
11504 | their return type. It is easier for GDB users to search | |
11505 | for such functions as `name(params)' than `long name(params)'. | |
11506 | In such case the minimal symbol names do not match the full | |
11507 | symbol names but for template functions there is never a need | |
11508 | to look up their definition from their declaration so | |
11509 | the only disadvantage remains the minimal symbol variant | |
11510 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
11511 | demangled.reset (gdb_demangle (mangled, |
11512 | (DMGL_PARAMS | DMGL_ANSI | |
11513 | | DMGL_RET_DROP))); | |
a766d390 | 11514 | } |
900e11f9 | 11515 | if (demangled) |
791afaa2 | 11516 | canon = demangled.get (); |
900e11f9 JK |
11517 | else |
11518 | { | |
11519 | canon = mangled; | |
11520 | need_copy = 0; | |
11521 | } | |
11522 | } | |
11523 | ||
11524 | if (canon == NULL || check_physname) | |
11525 | { | |
11526 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
11527 | ||
11528 | if (canon != NULL && strcmp (physname, canon) != 0) | |
11529 | { | |
11530 | /* It may not mean a bug in GDB. The compiler could also | |
11531 | compute DW_AT_linkage_name incorrectly. But in such case | |
11532 | GDB would need to be bug-to-bug compatible. */ | |
11533 | ||
11534 | complaint (&symfile_complaints, | |
11535 | _("Computed physname <%s> does not match demangled <%s> " | |
9d8780f0 SM |
11536 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
11537 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 11538 | objfile_name (objfile)); |
900e11f9 JK |
11539 | |
11540 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
11541 | is available here - over computed PHYSNAME. It is safer | |
11542 | against both buggy GDB and buggy compilers. */ | |
11543 | ||
11544 | retval = canon; | |
11545 | } | |
11546 | else | |
11547 | { | |
11548 | retval = physname; | |
11549 | need_copy = 0; | |
11550 | } | |
11551 | } | |
11552 | else | |
11553 | retval = canon; | |
11554 | ||
11555 | if (need_copy) | |
224c3ddb SM |
11556 | retval = ((const char *) |
11557 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
11558 | retval, strlen (retval))); | |
900e11f9 | 11559 | |
900e11f9 | 11560 | return retval; |
0114d602 DJ |
11561 | } |
11562 | ||
74921315 KS |
11563 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
11564 | a new symbol for it. | |
11565 | ||
11566 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
11567 | ||
11568 | static int | |
11569 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
11570 | { | |
11571 | struct attribute *attr; | |
11572 | ||
11573 | /* If the die does not have a name, this is not a namespace | |
11574 | alias. */ | |
11575 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
11576 | if (attr != NULL) | |
11577 | { | |
11578 | int num; | |
11579 | struct die_info *d = die; | |
11580 | struct dwarf2_cu *imported_cu = cu; | |
11581 | ||
11582 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
11583 | keep inspecting DIEs until we hit the underlying import. */ | |
11584 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
11585 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
11586 | { | |
11587 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
11588 | if (attr == NULL) | |
11589 | break; | |
11590 | ||
11591 | d = follow_die_ref (d, attr, &imported_cu); | |
11592 | if (d->tag != DW_TAG_imported_declaration) | |
11593 | break; | |
11594 | } | |
11595 | ||
11596 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
11597 | { | |
11598 | complaint (&symfile_complaints, | |
9d8780f0 SM |
11599 | _("DIE at %s has too many recursively imported " |
11600 | "declarations"), sect_offset_str (d->sect_off)); | |
74921315 KS |
11601 | return 0; |
11602 | } | |
11603 | ||
11604 | if (attr != NULL) | |
11605 | { | |
11606 | struct type *type; | |
9c541725 | 11607 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
74921315 | 11608 | |
9c541725 | 11609 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
11610 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
11611 | { | |
11612 | /* This declaration is a global namespace alias. Add | |
11613 | a symbol for it whose type is the aliased namespace. */ | |
11614 | new_symbol (die, type, cu); | |
11615 | return 1; | |
11616 | } | |
11617 | } | |
11618 | } | |
11619 | ||
11620 | return 0; | |
11621 | } | |
11622 | ||
22cee43f PMR |
11623 | /* Return the using directives repository (global or local?) to use in the |
11624 | current context for LANGUAGE. | |
11625 | ||
11626 | For Ada, imported declarations can materialize renamings, which *may* be | |
11627 | global. However it is impossible (for now?) in DWARF to distinguish | |
11628 | "external" imported declarations and "static" ones. As all imported | |
11629 | declarations seem to be static in all other languages, make them all CU-wide | |
11630 | global only in Ada. */ | |
11631 | ||
11632 | static struct using_direct ** | |
11633 | using_directives (enum language language) | |
11634 | { | |
11635 | if (language == language_ada && context_stack_depth == 0) | |
11636 | return &global_using_directives; | |
11637 | else | |
11638 | return &local_using_directives; | |
11639 | } | |
11640 | ||
27aa8d6a SW |
11641 | /* Read the import statement specified by the given die and record it. */ |
11642 | ||
11643 | static void | |
11644 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
11645 | { | |
518817b3 | 11646 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 11647 | struct attribute *import_attr; |
32019081 | 11648 | struct die_info *imported_die, *child_die; |
de4affc9 | 11649 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 11650 | const char *imported_name; |
794684b6 | 11651 | const char *imported_name_prefix; |
13387711 SW |
11652 | const char *canonical_name; |
11653 | const char *import_alias; | |
11654 | const char *imported_declaration = NULL; | |
794684b6 | 11655 | const char *import_prefix; |
eb1e02fd | 11656 | std::vector<const char *> excludes; |
13387711 | 11657 | |
27aa8d6a SW |
11658 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
11659 | if (import_attr == NULL) | |
11660 | { | |
11661 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
11662 | dwarf_tag_name (die->tag)); | |
11663 | return; | |
11664 | } | |
11665 | ||
de4affc9 CC |
11666 | imported_cu = cu; |
11667 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
11668 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
11669 | if (imported_name == NULL) |
11670 | { | |
11671 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
11672 | ||
11673 | The import in the following code: | |
11674 | namespace A | |
11675 | { | |
11676 | typedef int B; | |
11677 | } | |
11678 | ||
11679 | int main () | |
11680 | { | |
11681 | using A::B; | |
11682 | B b; | |
11683 | return b; | |
11684 | } | |
11685 | ||
11686 | ... | |
11687 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
11688 | <52> DW_AT_decl_file : 1 | |
11689 | <53> DW_AT_decl_line : 6 | |
11690 | <54> DW_AT_import : <0x75> | |
11691 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
11692 | <59> DW_AT_name : B | |
11693 | <5b> DW_AT_decl_file : 1 | |
11694 | <5c> DW_AT_decl_line : 2 | |
11695 | <5d> DW_AT_type : <0x6e> | |
11696 | ... | |
11697 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
11698 | <76> DW_AT_byte_size : 4 | |
11699 | <77> DW_AT_encoding : 5 (signed) | |
11700 | ||
11701 | imports the wrong die ( 0x75 instead of 0x58 ). | |
11702 | This case will be ignored until the gcc bug is fixed. */ | |
11703 | return; | |
11704 | } | |
11705 | ||
82856980 SW |
11706 | /* Figure out the local name after import. */ |
11707 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 11708 | |
794684b6 SW |
11709 | /* Figure out where the statement is being imported to. */ |
11710 | import_prefix = determine_prefix (die, cu); | |
11711 | ||
11712 | /* Figure out what the scope of the imported die is and prepend it | |
11713 | to the name of the imported die. */ | |
de4affc9 | 11714 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 11715 | |
f55ee35c JK |
11716 | if (imported_die->tag != DW_TAG_namespace |
11717 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 11718 | { |
13387711 SW |
11719 | imported_declaration = imported_name; |
11720 | canonical_name = imported_name_prefix; | |
794684b6 | 11721 | } |
13387711 | 11722 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 11723 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
11724 | imported_name_prefix, |
11725 | (cu->language == language_d ? "." : "::"), | |
11726 | imported_name, (char *) NULL); | |
13387711 SW |
11727 | else |
11728 | canonical_name = imported_name; | |
794684b6 | 11729 | |
32019081 JK |
11730 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
11731 | for (child_die = die->child; child_die && child_die->tag; | |
11732 | child_die = sibling_die (child_die)) | |
11733 | { | |
11734 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
11735 | represented by an imported module entry with an import attribute | |
11736 | referring to the module and owned entries corresponding to those | |
11737 | entities that are renamed as part of being imported. */ | |
11738 | ||
11739 | if (child_die->tag != DW_TAG_imported_declaration) | |
11740 | { | |
11741 | complaint (&symfile_complaints, | |
11742 | _("child DW_TAG_imported_declaration expected " | |
9d8780f0 SM |
11743 | "- DIE at %s [in module %s]"), |
11744 | sect_offset_str (child_die->sect_off), | |
11745 | objfile_name (objfile)); | |
32019081 JK |
11746 | continue; |
11747 | } | |
11748 | ||
11749 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
11750 | if (import_attr == NULL) | |
11751 | { | |
11752 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
11753 | dwarf_tag_name (child_die->tag)); | |
11754 | continue; | |
11755 | } | |
11756 | ||
11757 | imported_cu = cu; | |
11758 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
11759 | &imported_cu); | |
11760 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11761 | if (imported_name == NULL) | |
11762 | { | |
11763 | complaint (&symfile_complaints, | |
11764 | _("child DW_TAG_imported_declaration has unknown " | |
9d8780f0 SM |
11765 | "imported name - DIE at %s [in module %s]"), |
11766 | sect_offset_str (child_die->sect_off), | |
11767 | objfile_name (objfile)); | |
32019081 JK |
11768 | continue; |
11769 | } | |
11770 | ||
eb1e02fd | 11771 | excludes.push_back (imported_name); |
32019081 JK |
11772 | |
11773 | process_die (child_die, cu); | |
11774 | } | |
11775 | ||
22cee43f PMR |
11776 | add_using_directive (using_directives (cu->language), |
11777 | import_prefix, | |
11778 | canonical_name, | |
11779 | import_alias, | |
11780 | imported_declaration, | |
11781 | excludes, | |
11782 | 0, | |
11783 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11784 | } |
11785 | ||
5230b05a WT |
11786 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11787 | types, but gives them a size of zero. Starting with version 14, | |
11788 | ICC is compatible with GCC. */ | |
11789 | ||
11790 | static int | |
11791 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) | |
11792 | { | |
11793 | if (!cu->checked_producer) | |
11794 | check_producer (cu); | |
11795 | ||
11796 | return cu->producer_is_icc_lt_14; | |
11797 | } | |
11798 | ||
1b80a9fa JK |
11799 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11800 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11801 | this, it was first present in GCC release 4.3.0. */ | |
11802 | ||
11803 | static int | |
11804 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
11805 | { | |
11806 | if (!cu->checked_producer) | |
11807 | check_producer (cu); | |
11808 | ||
11809 | return cu->producer_is_gcc_lt_4_3; | |
11810 | } | |
11811 | ||
d721ba37 PA |
11812 | static file_and_directory |
11813 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11814 | { |
d721ba37 PA |
11815 | file_and_directory res; |
11816 | ||
9291a0cd TT |
11817 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11818 | is not a source language identifier. */ | |
d721ba37 PA |
11819 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11820 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11821 | |
d721ba37 PA |
11822 | if (res.comp_dir == NULL |
11823 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11824 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11825 | { |
d721ba37 PA |
11826 | res.comp_dir_storage = ldirname (res.name); |
11827 | if (!res.comp_dir_storage.empty ()) | |
11828 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11829 | } |
d721ba37 | 11830 | if (res.comp_dir != NULL) |
9291a0cd TT |
11831 | { |
11832 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11833 | directory, get rid of it. */ | |
d721ba37 | 11834 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11835 | |
d721ba37 PA |
11836 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11837 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11838 | } |
11839 | ||
d721ba37 PA |
11840 | if (res.name == NULL) |
11841 | res.name = "<unknown>"; | |
11842 | ||
11843 | return res; | |
9291a0cd TT |
11844 | } |
11845 | ||
f4dc4d17 DE |
11846 | /* Handle DW_AT_stmt_list for a compilation unit. |
11847 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11848 | COMP_DIR is the compilation directory. LOWPC is passed to |
11849 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11850 | |
11851 | static void | |
11852 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11853 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11854 | { |
518817b3 SM |
11855 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11856 | = cu->per_cu->dwarf2_per_objfile; | |
527f3840 | 11857 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 11858 | struct attribute *attr; |
527f3840 JK |
11859 | struct line_header line_header_local; |
11860 | hashval_t line_header_local_hash; | |
527f3840 JK |
11861 | void **slot; |
11862 | int decode_mapping; | |
2ab95328 | 11863 | |
f4dc4d17 DE |
11864 | gdb_assert (! cu->per_cu->is_debug_types); |
11865 | ||
2ab95328 | 11866 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
11867 | if (attr == NULL) |
11868 | return; | |
11869 | ||
9c541725 | 11870 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
11871 | |
11872 | /* The line header hash table is only created if needed (it exists to | |
11873 | prevent redundant reading of the line table for partial_units). | |
11874 | If we're given a partial_unit, we'll need it. If we're given a | |
11875 | compile_unit, then use the line header hash table if it's already | |
11876 | created, but don't create one just yet. */ | |
11877 | ||
11878 | if (dwarf2_per_objfile->line_header_hash == NULL | |
11879 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 11880 | { |
527f3840 JK |
11881 | dwarf2_per_objfile->line_header_hash |
11882 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
11883 | line_header_eq_voidp, | |
11884 | free_line_header_voidp, | |
11885 | &objfile->objfile_obstack, | |
11886 | hashtab_obstack_allocate, | |
11887 | dummy_obstack_deallocate); | |
11888 | } | |
2ab95328 | 11889 | |
9c541725 | 11890 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11891 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11892 | line_header_local_hash = line_header_hash (&line_header_local); | |
11893 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
11894 | { | |
11895 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11896 | &line_header_local, | |
11897 | line_header_local_hash, NO_INSERT); | |
11898 | ||
11899 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11900 | is not present in *SLOT (since if there is something in *SLOT then | |
11901 | it will be for a partial_unit). */ | |
11902 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11903 | { |
527f3840 | 11904 | gdb_assert (*slot != NULL); |
9a3c8263 | 11905 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11906 | return; |
dee91e82 | 11907 | } |
2ab95328 | 11908 | } |
527f3840 JK |
11909 | |
11910 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11911 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11912 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11913 | if (lh == NULL) | |
527f3840 | 11914 | return; |
4c8aa72d PA |
11915 | |
11916 | cu->line_header = lh.release (); | |
11917 | cu->line_header_die_owner = die; | |
527f3840 JK |
11918 | |
11919 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
11920 | slot = NULL; | |
11921 | else | |
11922 | { | |
11923 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11924 | &line_header_local, | |
11925 | line_header_local_hash, INSERT); | |
11926 | gdb_assert (slot != NULL); | |
11927 | } | |
11928 | if (slot != NULL && *slot == NULL) | |
11929 | { | |
11930 | /* This newly decoded line number information unit will be owned | |
11931 | by line_header_hash hash table. */ | |
11932 | *slot = cu->line_header; | |
4c8aa72d | 11933 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11934 | } |
11935 | else | |
11936 | { | |
11937 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11938 | may be already used by multiple CUs. Create only temporary decoded | |
11939 | line_header for this CU - it may happen at most once for each line | |
11940 | number information unit. And if we're not using line_header_hash | |
11941 | then this is what we want as well. */ | |
11942 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11943 | } |
11944 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11945 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11946 | decode_mapping); | |
fff8551c | 11947 | |
2ab95328 TT |
11948 | } |
11949 | ||
95554aad | 11950 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11951 | |
c906108c | 11952 | static void |
e7c27a73 | 11953 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11954 | { |
518817b3 SM |
11955 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11956 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 11957 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 11958 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 11959 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11960 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11961 | struct attribute *attr; | |
c906108c | 11962 | struct die_info *child_die; |
e142c38c | 11963 | CORE_ADDR baseaddr; |
6e70227d | 11964 | |
e142c38c | 11965 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 11966 | |
fae299cd | 11967 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11968 | |
11969 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11970 | from finish_block. */ | |
2acceee2 | 11971 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11972 | lowpc = highpc; |
3e29f34a | 11973 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11974 | |
d721ba37 | 11975 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11976 | |
95554aad | 11977 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 11978 | |
f4b8a18d KW |
11979 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11980 | standardised yet. As a workaround for the language detection we fall | |
11981 | back to the DW_AT_producer string. */ | |
11982 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11983 | cu->language = language_opencl; | |
11984 | ||
3019eac3 DE |
11985 | /* Similar hack for Go. */ |
11986 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11987 | set_cu_language (DW_LANG_Go, cu); | |
11988 | ||
d721ba37 | 11989 | dwarf2_start_symtab (cu, fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11990 | |
11991 | /* Decode line number information if present. We do this before | |
11992 | processing child DIEs, so that the line header table is available | |
11993 | for DW_AT_decl_file. */ | |
d721ba37 | 11994 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11995 | |
11996 | /* Process all dies in compilation unit. */ | |
11997 | if (die->child != NULL) | |
11998 | { | |
11999 | child_die = die->child; | |
12000 | while (child_die && child_die->tag) | |
12001 | { | |
12002 | process_die (child_die, cu); | |
12003 | child_die = sibling_die (child_die); | |
12004 | } | |
12005 | } | |
12006 | ||
12007 | /* Decode macro information, if present. Dwarf 2 macro information | |
12008 | refers to information in the line number info statement program | |
12009 | header, so we can only read it if we've read the header | |
12010 | successfully. */ | |
0af92d60 JK |
12011 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
12012 | if (attr == NULL) | |
12013 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
12014 | if (attr && cu->line_header) |
12015 | { | |
12016 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
12017 | complaint (&symfile_complaints, | |
0af92d60 | 12018 | _("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 12019 | |
43f3e411 | 12020 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
12021 | } |
12022 | else | |
12023 | { | |
12024 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
12025 | if (attr && cu->line_header) | |
12026 | { | |
12027 | unsigned int macro_offset = DW_UNSND (attr); | |
12028 | ||
43f3e411 | 12029 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
12030 | } |
12031 | } | |
3019eac3 DE |
12032 | } |
12033 | ||
f4dc4d17 DE |
12034 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
12035 | Create the set of symtabs used by this TU, or if this TU is sharing | |
12036 | symtabs with another TU and the symtabs have already been created | |
12037 | then restore those symtabs in the line header. | |
12038 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
12039 | |
12040 | static void | |
f4dc4d17 | 12041 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 12042 | { |
f4dc4d17 DE |
12043 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
12044 | struct type_unit_group *tu_group; | |
12045 | int first_time; | |
3019eac3 | 12046 | struct attribute *attr; |
9c541725 | 12047 | unsigned int i; |
0186c6a7 | 12048 | struct signatured_type *sig_type; |
3019eac3 | 12049 | |
f4dc4d17 | 12050 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 12051 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 12052 | |
f4dc4d17 | 12053 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 12054 | |
f4dc4d17 | 12055 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 12056 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
12057 | if (sig_type->type_unit_group == NULL) |
12058 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
12059 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
12060 | |
12061 | /* If we've already processed this stmt_list there's no real need to | |
12062 | do it again, we could fake it and just recreate the part we need | |
12063 | (file name,index -> symtab mapping). If data shows this optimization | |
12064 | is useful we can do it then. */ | |
43f3e411 | 12065 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
12066 | |
12067 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
12068 | debug info. */ | |
fff8551c | 12069 | line_header_up lh; |
f4dc4d17 | 12070 | if (attr != NULL) |
3019eac3 | 12071 | { |
9c541725 | 12072 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
f4dc4d17 DE |
12073 | lh = dwarf_decode_line_header (line_offset, cu); |
12074 | } | |
12075 | if (lh == NULL) | |
12076 | { | |
12077 | if (first_time) | |
12078 | dwarf2_start_symtab (cu, "", NULL, 0); | |
12079 | else | |
12080 | { | |
12081 | gdb_assert (tu_group->symtabs == NULL); | |
0ab9ce85 | 12082 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 12083 | } |
f4dc4d17 | 12084 | return; |
3019eac3 DE |
12085 | } |
12086 | ||
4c8aa72d PA |
12087 | cu->line_header = lh.release (); |
12088 | cu->line_header_die_owner = die; | |
3019eac3 | 12089 | |
f4dc4d17 DE |
12090 | if (first_time) |
12091 | { | |
43f3e411 | 12092 | struct compunit_symtab *cust = dwarf2_start_symtab (cu, "", NULL, 0); |
3019eac3 | 12093 | |
1fd60fc0 DE |
12094 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
12095 | still initializing it, and our caller (a few levels up) | |
12096 | process_full_type_unit still needs to know if this is the first | |
12097 | time. */ | |
12098 | ||
4c8aa72d PA |
12099 | tu_group->num_symtabs = cu->line_header->file_names.size (); |
12100 | tu_group->symtabs = XNEWVEC (struct symtab *, | |
12101 | cu->line_header->file_names.size ()); | |
3019eac3 | 12102 | |
4c8aa72d | 12103 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 12104 | { |
4c8aa72d | 12105 | file_entry &fe = cu->line_header->file_names[i]; |
3019eac3 | 12106 | |
4c8aa72d | 12107 | dwarf2_start_subfile (fe.name, fe.include_dir (cu->line_header)); |
3019eac3 | 12108 | |
f4dc4d17 DE |
12109 | if (current_subfile->symtab == NULL) |
12110 | { | |
4c8aa72d PA |
12111 | /* NOTE: start_subfile will recognize when it's been |
12112 | passed a file it has already seen. So we can't | |
12113 | assume there's a simple mapping from | |
12114 | cu->line_header->file_names to subfiles, plus | |
12115 | cu->line_header->file_names may contain dups. */ | |
43f3e411 DE |
12116 | current_subfile->symtab |
12117 | = allocate_symtab (cust, current_subfile->name); | |
f4dc4d17 DE |
12118 | } |
12119 | ||
8c43009f PA |
12120 | fe.symtab = current_subfile->symtab; |
12121 | tu_group->symtabs[i] = fe.symtab; | |
f4dc4d17 DE |
12122 | } |
12123 | } | |
12124 | else | |
3019eac3 | 12125 | { |
0ab9ce85 | 12126 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 12127 | |
4c8aa72d | 12128 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 12129 | { |
4c8aa72d | 12130 | file_entry &fe = cu->line_header->file_names[i]; |
f4dc4d17 | 12131 | |
4c8aa72d | 12132 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 12133 | } |
3019eac3 DE |
12134 | } |
12135 | ||
f4dc4d17 DE |
12136 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
12137 | so they don't have a "real" (so to speak) symtab anyway. | |
12138 | There is later code that will assign the main symtab to all symbols | |
12139 | that don't have one. We need to handle the case of a symbol with a | |
12140 | missing symtab (DW_AT_decl_file) anyway. */ | |
12141 | } | |
3019eac3 | 12142 | |
f4dc4d17 DE |
12143 | /* Process DW_TAG_type_unit. |
12144 | For TUs we want to skip the first top level sibling if it's not the | |
12145 | actual type being defined by this TU. In this case the first top | |
12146 | level sibling is there to provide context only. */ | |
3019eac3 | 12147 | |
f4dc4d17 DE |
12148 | static void |
12149 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
12150 | { | |
12151 | struct die_info *child_die; | |
3019eac3 | 12152 | |
f4dc4d17 DE |
12153 | prepare_one_comp_unit (cu, die, language_minimal); |
12154 | ||
12155 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
12156 | We do this before processing child DIEs, so that the line header table | |
12157 | is available for DW_AT_decl_file. */ | |
12158 | setup_type_unit_groups (die, cu); | |
12159 | ||
12160 | if (die->child != NULL) | |
12161 | { | |
12162 | child_die = die->child; | |
12163 | while (child_die && child_die->tag) | |
12164 | { | |
12165 | process_die (child_die, cu); | |
12166 | child_die = sibling_die (child_die); | |
12167 | } | |
12168 | } | |
3019eac3 DE |
12169 | } |
12170 | \f | |
80626a55 DE |
12171 | /* DWO/DWP files. |
12172 | ||
12173 | http://gcc.gnu.org/wiki/DebugFission | |
12174 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
12175 | ||
12176 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
12177 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
12178 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
12179 | |
12180 | static hashval_t | |
12181 | hash_dwo_file (const void *item) | |
12182 | { | |
9a3c8263 | 12183 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 12184 | hashval_t hash; |
3019eac3 | 12185 | |
a2ce51a0 DE |
12186 | hash = htab_hash_string (dwo_file->dwo_name); |
12187 | if (dwo_file->comp_dir != NULL) | |
12188 | hash += htab_hash_string (dwo_file->comp_dir); | |
12189 | return hash; | |
3019eac3 DE |
12190 | } |
12191 | ||
12192 | static int | |
12193 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
12194 | { | |
9a3c8263 SM |
12195 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
12196 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 12197 | |
a2ce51a0 DE |
12198 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
12199 | return 0; | |
12200 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
12201 | return lhs->comp_dir == rhs->comp_dir; | |
12202 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
12203 | } |
12204 | ||
12205 | /* Allocate a hash table for DWO files. */ | |
12206 | ||
12207 | static htab_t | |
ed2dc618 | 12208 | allocate_dwo_file_hash_table (struct objfile *objfile) |
3019eac3 | 12209 | { |
3019eac3 DE |
12210 | return htab_create_alloc_ex (41, |
12211 | hash_dwo_file, | |
12212 | eq_dwo_file, | |
12213 | NULL, | |
12214 | &objfile->objfile_obstack, | |
12215 | hashtab_obstack_allocate, | |
12216 | dummy_obstack_deallocate); | |
12217 | } | |
12218 | ||
80626a55 DE |
12219 | /* Lookup DWO file DWO_NAME. */ |
12220 | ||
12221 | static void ** | |
ed2dc618 SM |
12222 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12223 | const char *dwo_name, | |
12224 | const char *comp_dir) | |
80626a55 DE |
12225 | { |
12226 | struct dwo_file find_entry; | |
12227 | void **slot; | |
12228 | ||
12229 | if (dwarf2_per_objfile->dwo_files == NULL) | |
ed2dc618 SM |
12230 | dwarf2_per_objfile->dwo_files |
12231 | = allocate_dwo_file_hash_table (dwarf2_per_objfile->objfile); | |
80626a55 DE |
12232 | |
12233 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
12234 | find_entry.dwo_name = dwo_name; |
12235 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
12236 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
12237 | ||
12238 | return slot; | |
12239 | } | |
12240 | ||
3019eac3 DE |
12241 | static hashval_t |
12242 | hash_dwo_unit (const void *item) | |
12243 | { | |
9a3c8263 | 12244 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
12245 | |
12246 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
12247 | return dwo_unit->signature; | |
12248 | } | |
12249 | ||
12250 | static int | |
12251 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
12252 | { | |
9a3c8263 SM |
12253 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
12254 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
12255 | |
12256 | /* The signature is assumed to be unique within the DWO file. | |
12257 | So while object file CU dwo_id's always have the value zero, | |
12258 | that's OK, assuming each object file DWO file has only one CU, | |
12259 | and that's the rule for now. */ | |
12260 | return lhs->signature == rhs->signature; | |
12261 | } | |
12262 | ||
12263 | /* Allocate a hash table for DWO CUs,TUs. | |
12264 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
12265 | ||
12266 | static htab_t | |
12267 | allocate_dwo_unit_table (struct objfile *objfile) | |
12268 | { | |
12269 | /* Start out with a pretty small number. | |
12270 | Generally DWO files contain only one CU and maybe some TUs. */ | |
12271 | return htab_create_alloc_ex (3, | |
12272 | hash_dwo_unit, | |
12273 | eq_dwo_unit, | |
12274 | NULL, | |
12275 | &objfile->objfile_obstack, | |
12276 | hashtab_obstack_allocate, | |
12277 | dummy_obstack_deallocate); | |
12278 | } | |
12279 | ||
80626a55 | 12280 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 12281 | |
19c3d4c9 | 12282 | struct create_dwo_cu_data |
3019eac3 DE |
12283 | { |
12284 | struct dwo_file *dwo_file; | |
19c3d4c9 | 12285 | struct dwo_unit dwo_unit; |
3019eac3 DE |
12286 | }; |
12287 | ||
19c3d4c9 | 12288 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
12289 | |
12290 | static void | |
19c3d4c9 DE |
12291 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
12292 | const gdb_byte *info_ptr, | |
12293 | struct die_info *comp_unit_die, | |
12294 | int has_children, | |
12295 | void *datap) | |
3019eac3 DE |
12296 | { |
12297 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 12298 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 12299 | struct dwarf2_section_info *section = cu->per_cu->section; |
9a3c8263 | 12300 | struct create_dwo_cu_data *data = (struct create_dwo_cu_data *) datap; |
3019eac3 | 12301 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 12302 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 12303 | struct attribute *attr; |
3019eac3 DE |
12304 | |
12305 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
12306 | if (attr == NULL) | |
12307 | { | |
19c3d4c9 | 12308 | complaint (&symfile_complaints, |
9d8780f0 | 12309 | _("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 12310 | " its dwo_id [in module %s]"), |
9d8780f0 | 12311 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
12312 | return; |
12313 | } | |
12314 | ||
3019eac3 DE |
12315 | dwo_unit->dwo_file = dwo_file; |
12316 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 12317 | dwo_unit->section = section; |
9c541725 | 12318 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
12319 | dwo_unit->length = cu->per_cu->length; |
12320 | ||
b4f54984 | 12321 | if (dwarf_read_debug) |
9d8780f0 SM |
12322 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
12323 | sect_offset_str (sect_off), | |
9c541725 | 12324 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
12325 | } |
12326 | ||
33c5cd75 | 12327 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 12328 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 12329 | |
33c5cd75 | 12330 | static void |
ed2dc618 SM |
12331 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12332 | struct dwo_file &dwo_file, dwarf2_section_info §ion, | |
33c5cd75 | 12333 | htab_t &cus_htab) |
3019eac3 DE |
12334 | { |
12335 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 12336 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 12337 | |
33c5cd75 DB |
12338 | dwarf2_read_section (objfile, §ion); |
12339 | info_ptr = section.buffer; | |
3019eac3 DE |
12340 | |
12341 | if (info_ptr == NULL) | |
33c5cd75 | 12342 | return; |
3019eac3 | 12343 | |
b4f54984 | 12344 | if (dwarf_read_debug) |
19c3d4c9 DE |
12345 | { |
12346 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
33c5cd75 DB |
12347 | get_section_name (§ion), |
12348 | get_section_file_name (§ion)); | |
19c3d4c9 | 12349 | } |
3019eac3 | 12350 | |
33c5cd75 | 12351 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
12352 | while (info_ptr < end_ptr) |
12353 | { | |
12354 | struct dwarf2_per_cu_data per_cu; | |
33c5cd75 DB |
12355 | struct create_dwo_cu_data create_dwo_cu_data; |
12356 | struct dwo_unit *dwo_unit; | |
12357 | void **slot; | |
12358 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 | 12359 | |
19c3d4c9 DE |
12360 | memset (&create_dwo_cu_data.dwo_unit, 0, |
12361 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 | 12362 | memset (&per_cu, 0, sizeof (per_cu)); |
e3b94546 | 12363 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 12364 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
12365 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
12366 | per_cu.section = §ion; | |
c5ed0576 | 12367 | create_dwo_cu_data.dwo_file = &dwo_file; |
33c5cd75 DB |
12368 | |
12369 | init_cutu_and_read_dies_no_follow ( | |
12370 | &per_cu, &dwo_file, create_dwo_cu_reader, &create_dwo_cu_data); | |
12371 | info_ptr += per_cu.length; | |
12372 | ||
12373 | // If the unit could not be parsed, skip it. | |
12374 | if (create_dwo_cu_data.dwo_unit.dwo_file == NULL) | |
12375 | continue; | |
3019eac3 | 12376 | |
33c5cd75 DB |
12377 | if (cus_htab == NULL) |
12378 | cus_htab = allocate_dwo_unit_table (objfile); | |
19c3d4c9 | 12379 | |
33c5cd75 DB |
12380 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
12381 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
12382 | slot = htab_find_slot (cus_htab, dwo_unit, INSERT); | |
12383 | gdb_assert (slot != NULL); | |
12384 | if (*slot != NULL) | |
19c3d4c9 | 12385 | { |
33c5cd75 DB |
12386 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
12387 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 12388 | |
33c5cd75 | 12389 | complaint (&symfile_complaints, |
9d8780f0 SM |
12390 | _("debug cu entry at offset %s is duplicate to" |
12391 | " the entry at offset %s, signature %s"), | |
12392 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 12393 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 12394 | } |
33c5cd75 | 12395 | *slot = (void *)dwo_unit; |
3019eac3 | 12396 | } |
3019eac3 DE |
12397 | } |
12398 | ||
80626a55 DE |
12399 | /* DWP file .debug_{cu,tu}_index section format: |
12400 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
12401 | ||
d2415c6c DE |
12402 | DWP Version 1: |
12403 | ||
80626a55 DE |
12404 | Both index sections have the same format, and serve to map a 64-bit |
12405 | signature to a set of section numbers. Each section begins with a header, | |
12406 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
12407 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
12408 | aligned at 8-byte boundaries in the file. | |
12409 | ||
d2415c6c DE |
12410 | The index section header consists of: |
12411 | ||
12412 | V, 32 bit version number | |
12413 | -, 32 bits unused | |
12414 | N, 32 bit number of compilation units or type units in the index | |
12415 | M, 32 bit number of slots in the hash table | |
80626a55 | 12416 | |
d2415c6c | 12417 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 12418 | |
d2415c6c DE |
12419 | The hash table begins at offset 16 in the section, and consists of an array |
12420 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
12421 | order of the application binary). Unused slots in the hash table are 0. | |
12422 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 12423 | |
d2415c6c DE |
12424 | The parallel table begins immediately after the hash table |
12425 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
12426 | array of 32-bit indexes (using the byte order of the application binary), | |
12427 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
12428 | table contains a 32-bit index into the pool of section numbers. For unused | |
12429 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 12430 | |
73869dc2 DE |
12431 | The pool of section numbers begins immediately following the hash table |
12432 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
12433 | section numbers consists of an array of 32-bit words (using the byte order | |
12434 | of the application binary). Each item in the array is indexed starting | |
12435 | from 0. The hash table entry provides the index of the first section | |
12436 | number in the set. Additional section numbers in the set follow, and the | |
12437 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
12438 | ||
12439 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
12440 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
12441 | be the second entry. Other members of the set may follow in any order. | |
12442 | ||
12443 | --- | |
12444 | ||
12445 | DWP Version 2: | |
12446 | ||
12447 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
12448 | and the entries in the index tables are now offsets into these sections. | |
12449 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
12450 | section. | |
12451 | ||
12452 | Index Section Contents: | |
12453 | Header | |
12454 | Hash Table of Signatures dwp_hash_table.hash_table | |
12455 | Parallel Table of Indices dwp_hash_table.unit_table | |
12456 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
12457 | Table of Section Sizes dwp_hash_table.v2.sizes | |
12458 | ||
12459 | The index section header consists of: | |
12460 | ||
12461 | V, 32 bit version number | |
12462 | L, 32 bit number of columns in the table of section offsets | |
12463 | N, 32 bit number of compilation units or type units in the index | |
12464 | M, 32 bit number of slots in the hash table | |
12465 | ||
12466 | Numbers are recorded using the byte order of the application binary. | |
12467 | ||
12468 | The hash table has the same format as version 1. | |
12469 | The parallel table of indices has the same format as version 1, | |
12470 | except that the entries are origin-1 indices into the table of sections | |
12471 | offsets and the table of section sizes. | |
12472 | ||
12473 | The table of offsets begins immediately following the parallel table | |
12474 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
12475 | a two-dimensional array of 32-bit words (using the byte order of the | |
12476 | application binary), with L columns and N+1 rows, in row-major order. | |
12477 | Each row in the array is indexed starting from 0. The first row provides | |
12478 | a key to the remaining rows: each column in this row provides an identifier | |
12479 | for a debug section, and the offsets in the same column of subsequent rows | |
12480 | refer to that section. The section identifiers are: | |
12481 | ||
12482 | DW_SECT_INFO 1 .debug_info.dwo | |
12483 | DW_SECT_TYPES 2 .debug_types.dwo | |
12484 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
12485 | DW_SECT_LINE 4 .debug_line.dwo | |
12486 | DW_SECT_LOC 5 .debug_loc.dwo | |
12487 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
12488 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
12489 | DW_SECT_MACRO 8 .debug_macro.dwo | |
12490 | ||
12491 | The offsets provided by the CU and TU index sections are the base offsets | |
12492 | for the contributions made by each CU or TU to the corresponding section | |
12493 | in the package file. Each CU and TU header contains an abbrev_offset | |
12494 | field, used to find the abbreviations table for that CU or TU within the | |
12495 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
12496 | be interpreted as relative to the base offset given in the index section. | |
12497 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
12498 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
12499 | and offsets into other debug sections obtained from DWARF attributes should | |
12500 | also be interpreted as relative to the corresponding base offset. | |
12501 | ||
12502 | The table of sizes begins immediately following the table of offsets. | |
12503 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
12504 | with L columns and N rows, in row-major order. Each row in the array is | |
12505 | indexed starting from 1 (row 0 is shared by the two tables). | |
12506 | ||
12507 | --- | |
12508 | ||
12509 | Hash table lookup is handled the same in version 1 and 2: | |
12510 | ||
12511 | We assume that N and M will not exceed 2^32 - 1. | |
12512 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
12513 | ||
d2415c6c DE |
12514 | Given a 64-bit compilation unit signature or a type signature S, an entry |
12515 | in the hash table is located as follows: | |
80626a55 | 12516 | |
d2415c6c DE |
12517 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
12518 | the low-order k bits all set to 1. | |
80626a55 | 12519 | |
d2415c6c | 12520 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 12521 | |
d2415c6c DE |
12522 | 3) If the hash table entry at index H matches the signature, use that |
12523 | entry. If the hash table entry at index H is unused (all zeroes), | |
12524 | terminate the search: the signature is not present in the table. | |
80626a55 | 12525 | |
d2415c6c | 12526 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 12527 | |
d2415c6c | 12528 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 12529 | to stop at an unused slot or find the match. */ |
80626a55 DE |
12530 | |
12531 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
12532 | .debug_{info,types}.dwo in DWP_FILE. | |
12533 | Returns NULL if there isn't one. | |
12534 | Note: This function processes DWP files only, not DWO files. */ | |
12535 | ||
12536 | static struct dwp_hash_table * | |
ed2dc618 SM |
12537 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12538 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
12539 | { |
12540 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12541 | bfd *dbfd = dwp_file->dbfd; | |
948f8e3d | 12542 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 12543 | struct dwarf2_section_info *index; |
73869dc2 | 12544 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
12545 | struct dwp_hash_table *htab; |
12546 | ||
12547 | if (is_debug_types) | |
12548 | index = &dwp_file->sections.tu_index; | |
12549 | else | |
12550 | index = &dwp_file->sections.cu_index; | |
12551 | ||
12552 | if (dwarf2_section_empty_p (index)) | |
12553 | return NULL; | |
12554 | dwarf2_read_section (objfile, index); | |
12555 | ||
12556 | index_ptr = index->buffer; | |
12557 | index_end = index_ptr + index->size; | |
12558 | ||
12559 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
12560 | index_ptr += 4; |
12561 | if (version == 2) | |
12562 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
12563 | else | |
12564 | nr_columns = 0; | |
12565 | index_ptr += 4; | |
80626a55 DE |
12566 | nr_units = read_4_bytes (dbfd, index_ptr); |
12567 | index_ptr += 4; | |
12568 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
12569 | index_ptr += 4; | |
12570 | ||
73869dc2 | 12571 | if (version != 1 && version != 2) |
80626a55 | 12572 | { |
21aa081e | 12573 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 12574 | " [in module %s]"), |
21aa081e | 12575 | pulongest (version), dwp_file->name); |
80626a55 DE |
12576 | } |
12577 | if (nr_slots != (nr_slots & -nr_slots)) | |
12578 | { | |
21aa081e | 12579 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 12580 | " is not power of 2 [in module %s]"), |
21aa081e | 12581 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
12582 | } |
12583 | ||
12584 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
12585 | htab->version = version; |
12586 | htab->nr_columns = nr_columns; | |
80626a55 DE |
12587 | htab->nr_units = nr_units; |
12588 | htab->nr_slots = nr_slots; | |
12589 | htab->hash_table = index_ptr; | |
12590 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
12591 | |
12592 | /* Exit early if the table is empty. */ | |
12593 | if (nr_slots == 0 || nr_units == 0 | |
12594 | || (version == 2 && nr_columns == 0)) | |
12595 | { | |
12596 | /* All must be zero. */ | |
12597 | if (nr_slots != 0 || nr_units != 0 | |
12598 | || (version == 2 && nr_columns != 0)) | |
12599 | { | |
12600 | complaint (&symfile_complaints, | |
12601 | _("Empty DWP but nr_slots,nr_units,nr_columns not" | |
12602 | " all zero [in modules %s]"), | |
12603 | dwp_file->name); | |
12604 | } | |
12605 | return htab; | |
12606 | } | |
12607 | ||
12608 | if (version == 1) | |
12609 | { | |
12610 | htab->section_pool.v1.indices = | |
12611 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12612 | /* It's harder to decide whether the section is too small in v1. | |
12613 | V1 is deprecated anyway so we punt. */ | |
12614 | } | |
12615 | else | |
12616 | { | |
12617 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12618 | int *ids = htab->section_pool.v2.section_ids; | |
12619 | /* Reverse map for error checking. */ | |
12620 | int ids_seen[DW_SECT_MAX + 1]; | |
12621 | int i; | |
12622 | ||
12623 | if (nr_columns < 2) | |
12624 | { | |
12625 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
12626 | " in section table [in module %s]"), | |
12627 | dwp_file->name); | |
12628 | } | |
12629 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
12630 | { | |
12631 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
12632 | " in section table [in module %s]"), | |
12633 | dwp_file->name); | |
12634 | } | |
12635 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
12636 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
12637 | for (i = 0; i < nr_columns; ++i) | |
12638 | { | |
12639 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
12640 | ||
12641 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
12642 | { | |
12643 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
12644 | " in section table [in module %s]"), | |
12645 | id, dwp_file->name); | |
12646 | } | |
12647 | if (ids_seen[id] != -1) | |
12648 | { | |
12649 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
12650 | " id %d in section table [in module %s]"), | |
12651 | id, dwp_file->name); | |
12652 | } | |
12653 | ids_seen[id] = i; | |
12654 | ids[i] = id; | |
12655 | } | |
12656 | /* Must have exactly one info or types section. */ | |
12657 | if (((ids_seen[DW_SECT_INFO] != -1) | |
12658 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
12659 | != 1) | |
12660 | { | |
12661 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
12662 | " DWO info/types section [in module %s]"), | |
12663 | dwp_file->name); | |
12664 | } | |
12665 | /* Must have an abbrev section. */ | |
12666 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
12667 | { | |
12668 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
12669 | " section [in module %s]"), | |
12670 | dwp_file->name); | |
12671 | } | |
12672 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12673 | htab->section_pool.v2.sizes = | |
12674 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
12675 | * nr_units * nr_columns); | |
12676 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
12677 | * nr_units * nr_columns)) | |
12678 | > index_end) | |
12679 | { | |
12680 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12681 | " [in module %s]"), | |
12682 | dwp_file->name); | |
12683 | } | |
12684 | } | |
80626a55 DE |
12685 | |
12686 | return htab; | |
12687 | } | |
12688 | ||
12689 | /* Update SECTIONS with the data from SECTP. | |
12690 | ||
12691 | This function is like the other "locate" section routines that are | |
12692 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 12693 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
12694 | |
12695 | The result is non-zero for success, or zero if an error was found. */ | |
12696 | ||
12697 | static int | |
73869dc2 DE |
12698 | locate_v1_virtual_dwo_sections (asection *sectp, |
12699 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
12700 | { |
12701 | const struct dwop_section_names *names = &dwop_section_names; | |
12702 | ||
12703 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12704 | { | |
12705 | /* There can be only one. */ | |
049412e3 | 12706 | if (sections->abbrev.s.section != NULL) |
80626a55 | 12707 | return 0; |
049412e3 | 12708 | sections->abbrev.s.section = sectp; |
80626a55 DE |
12709 | sections->abbrev.size = bfd_get_section_size (sectp); |
12710 | } | |
12711 | else if (section_is_p (sectp->name, &names->info_dwo) | |
12712 | || section_is_p (sectp->name, &names->types_dwo)) | |
12713 | { | |
12714 | /* There can be only one. */ | |
049412e3 | 12715 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 12716 | return 0; |
049412e3 | 12717 | sections->info_or_types.s.section = sectp; |
80626a55 DE |
12718 | sections->info_or_types.size = bfd_get_section_size (sectp); |
12719 | } | |
12720 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12721 | { | |
12722 | /* There can be only one. */ | |
049412e3 | 12723 | if (sections->line.s.section != NULL) |
80626a55 | 12724 | return 0; |
049412e3 | 12725 | sections->line.s.section = sectp; |
80626a55 DE |
12726 | sections->line.size = bfd_get_section_size (sectp); |
12727 | } | |
12728 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12729 | { | |
12730 | /* There can be only one. */ | |
049412e3 | 12731 | if (sections->loc.s.section != NULL) |
80626a55 | 12732 | return 0; |
049412e3 | 12733 | sections->loc.s.section = sectp; |
80626a55 DE |
12734 | sections->loc.size = bfd_get_section_size (sectp); |
12735 | } | |
12736 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12737 | { | |
12738 | /* There can be only one. */ | |
049412e3 | 12739 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12740 | return 0; |
049412e3 | 12741 | sections->macinfo.s.section = sectp; |
80626a55 DE |
12742 | sections->macinfo.size = bfd_get_section_size (sectp); |
12743 | } | |
12744 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12745 | { | |
12746 | /* There can be only one. */ | |
049412e3 | 12747 | if (sections->macro.s.section != NULL) |
80626a55 | 12748 | return 0; |
049412e3 | 12749 | sections->macro.s.section = sectp; |
80626a55 DE |
12750 | sections->macro.size = bfd_get_section_size (sectp); |
12751 | } | |
12752 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12753 | { | |
12754 | /* There can be only one. */ | |
049412e3 | 12755 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12756 | return 0; |
049412e3 | 12757 | sections->str_offsets.s.section = sectp; |
80626a55 DE |
12758 | sections->str_offsets.size = bfd_get_section_size (sectp); |
12759 | } | |
12760 | else | |
12761 | { | |
12762 | /* No other kind of section is valid. */ | |
12763 | return 0; | |
12764 | } | |
12765 | ||
12766 | return 1; | |
12767 | } | |
12768 | ||
73869dc2 DE |
12769 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12770 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12771 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12772 | This is for DWP version 1 files. */ | |
80626a55 DE |
12773 | |
12774 | static struct dwo_unit * | |
ed2dc618 SM |
12775 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12776 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12777 | uint32_t unit_index, |
12778 | const char *comp_dir, | |
12779 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
12780 | { |
12781 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
12782 | const struct dwp_hash_table *dwp_htab = |
12783 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 DE |
12784 | bfd *dbfd = dwp_file->dbfd; |
12785 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12786 | struct dwo_file *dwo_file; | |
12787 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12788 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12789 | void **dwo_file_slot; |
80626a55 DE |
12790 | int i; |
12791 | ||
73869dc2 DE |
12792 | gdb_assert (dwp_file->version == 1); |
12793 | ||
b4f54984 | 12794 | if (dwarf_read_debug) |
80626a55 | 12795 | { |
73869dc2 | 12796 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 12797 | kind, |
73869dc2 | 12798 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
12799 | dwp_file->name); |
12800 | } | |
12801 | ||
19ac8c2e | 12802 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12803 | Put a limit on the number of sections we look for so that bad data |
12804 | doesn't cause us to loop forever. */ | |
12805 | ||
73869dc2 | 12806 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12807 | (1 /* .debug_info or .debug_types */ \ |
12808 | + 1 /* .debug_abbrev */ \ | |
12809 | + 1 /* .debug_line */ \ | |
12810 | + 1 /* .debug_loc */ \ | |
12811 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12812 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12813 | + 1 /* trailing zero */) |
12814 | ||
12815 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12816 | |
73869dc2 | 12817 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12818 | { |
12819 | asection *sectp; | |
12820 | uint32_t section_nr = | |
12821 | read_4_bytes (dbfd, | |
73869dc2 DE |
12822 | dwp_htab->section_pool.v1.indices |
12823 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12824 | |
12825 | if (section_nr == 0) | |
12826 | break; | |
12827 | if (section_nr >= dwp_file->num_sections) | |
12828 | { | |
12829 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12830 | " [in module %s]"), | |
12831 | dwp_file->name); | |
12832 | } | |
12833 | ||
12834 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12835 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12836 | { |
12837 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12838 | " [in module %s]"), | |
12839 | dwp_file->name); | |
12840 | } | |
12841 | } | |
12842 | ||
12843 | if (i < 2 | |
a32a8923 DE |
12844 | || dwarf2_section_empty_p (§ions.info_or_types) |
12845 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
12846 | { |
12847 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12848 | " [in module %s]"), | |
12849 | dwp_file->name); | |
12850 | } | |
73869dc2 | 12851 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12852 | { |
12853 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12854 | " [in module %s]"), | |
12855 | dwp_file->name); | |
12856 | } | |
12857 | ||
12858 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12859 | have dwo_unit "live" in that. At least for now. | |
12860 | ||
12861 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12862 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12863 | file, we can combine them back into a virtual DWO file to save space |
12864 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12865 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12866 | ||
791afaa2 TT |
12867 | std::string virtual_dwo_name = |
12868 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
12869 | get_section_id (§ions.abbrev), | |
12870 | get_section_id (§ions.line), | |
12871 | get_section_id (§ions.loc), | |
12872 | get_section_id (§ions.str_offsets)); | |
80626a55 | 12873 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12874 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12875 | virtual_dwo_name.c_str (), | |
12876 | comp_dir); | |
80626a55 DE |
12877 | /* Create one if necessary. */ |
12878 | if (*dwo_file_slot == NULL) | |
12879 | { | |
b4f54984 | 12880 | if (dwarf_read_debug) |
80626a55 DE |
12881 | { |
12882 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12883 | virtual_dwo_name.c_str ()); |
80626a55 DE |
12884 | } |
12885 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12886 | dwo_file->dwo_name |
12887 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12888 | virtual_dwo_name.c_str (), |
12889 | virtual_dwo_name.size ()); | |
0ac5b59e | 12890 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12891 | dwo_file->sections.abbrev = sections.abbrev; |
12892 | dwo_file->sections.line = sections.line; | |
12893 | dwo_file->sections.loc = sections.loc; | |
12894 | dwo_file->sections.macinfo = sections.macinfo; | |
12895 | dwo_file->sections.macro = sections.macro; | |
12896 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12897 | /* The "str" section is global to the entire DWP file. */ | |
12898 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12899 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12900 | there's no need to record it in dwo_file. |
12901 | Also, we can't simply record type sections in dwo_file because | |
12902 | we record a pointer into the vector in dwo_unit. As we collect more | |
12903 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12904 | for it, invalidating all copies of pointers into the previous |
12905 | contents. */ | |
80626a55 DE |
12906 | *dwo_file_slot = dwo_file; |
12907 | } | |
12908 | else | |
12909 | { | |
b4f54984 | 12910 | if (dwarf_read_debug) |
80626a55 DE |
12911 | { |
12912 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12913 | virtual_dwo_name.c_str ()); |
80626a55 | 12914 | } |
9a3c8263 | 12915 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12916 | } |
80626a55 DE |
12917 | |
12918 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12919 | dwo_unit->dwo_file = dwo_file; | |
12920 | dwo_unit->signature = signature; | |
8d749320 SM |
12921 | dwo_unit->section = |
12922 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 12923 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12924 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12925 | |
12926 | return dwo_unit; | |
12927 | } | |
12928 | ||
73869dc2 DE |
12929 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
12930 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
12931 | piece within that section used by a TU/CU, return a virtual section | |
12932 | of just that piece. */ | |
12933 | ||
12934 | static struct dwarf2_section_info | |
ed2dc618 SM |
12935 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12936 | struct dwarf2_section_info *section, | |
73869dc2 DE |
12937 | bfd_size_type offset, bfd_size_type size) |
12938 | { | |
12939 | struct dwarf2_section_info result; | |
12940 | asection *sectp; | |
12941 | ||
12942 | gdb_assert (section != NULL); | |
12943 | gdb_assert (!section->is_virtual); | |
12944 | ||
12945 | memset (&result, 0, sizeof (result)); | |
12946 | result.s.containing_section = section; | |
12947 | result.is_virtual = 1; | |
12948 | ||
12949 | if (size == 0) | |
12950 | return result; | |
12951 | ||
12952 | sectp = get_section_bfd_section (section); | |
12953 | ||
12954 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12955 | bounds of the real section. This is a pretty-rare event, so just | |
12956 | flag an error (easier) instead of a warning and trying to cope. */ | |
12957 | if (sectp == NULL | |
12958 | || offset + size > bfd_get_section_size (sectp)) | |
12959 | { | |
73869dc2 DE |
12960 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12961 | " in section %s [in module %s]"), | |
12962 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
12963 | objfile_name (dwarf2_per_objfile->objfile)); | |
12964 | } | |
12965 | ||
12966 | result.virtual_offset = offset; | |
12967 | result.size = size; | |
12968 | return result; | |
12969 | } | |
12970 | ||
12971 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12972 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12973 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12974 | This is for DWP version 2 files. */ | |
12975 | ||
12976 | static struct dwo_unit * | |
ed2dc618 SM |
12977 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12978 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12979 | uint32_t unit_index, |
12980 | const char *comp_dir, | |
12981 | ULONGEST signature, int is_debug_types) | |
12982 | { | |
12983 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12984 | const struct dwp_hash_table *dwp_htab = | |
12985 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12986 | bfd *dbfd = dwp_file->dbfd; | |
12987 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12988 | struct dwo_file *dwo_file; | |
12989 | struct dwo_unit *dwo_unit; | |
12990 | struct virtual_v2_dwo_sections sections; | |
12991 | void **dwo_file_slot; | |
73869dc2 DE |
12992 | int i; |
12993 | ||
12994 | gdb_assert (dwp_file->version == 2); | |
12995 | ||
b4f54984 | 12996 | if (dwarf_read_debug) |
73869dc2 DE |
12997 | { |
12998 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12999 | kind, | |
13000 | pulongest (unit_index), hex_string (signature), | |
13001 | dwp_file->name); | |
13002 | } | |
13003 | ||
13004 | /* Fetch the section offsets of this DWO unit. */ | |
13005 | ||
13006 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
13007 | |
13008 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
13009 | { | |
13010 | uint32_t offset = read_4_bytes (dbfd, | |
13011 | dwp_htab->section_pool.v2.offsets | |
13012 | + (((unit_index - 1) * dwp_htab->nr_columns | |
13013 | + i) | |
13014 | * sizeof (uint32_t))); | |
13015 | uint32_t size = read_4_bytes (dbfd, | |
13016 | dwp_htab->section_pool.v2.sizes | |
13017 | + (((unit_index - 1) * dwp_htab->nr_columns | |
13018 | + i) | |
13019 | * sizeof (uint32_t))); | |
13020 | ||
13021 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
13022 | { | |
13023 | case DW_SECT_INFO: | |
13024 | case DW_SECT_TYPES: | |
13025 | sections.info_or_types_offset = offset; | |
13026 | sections.info_or_types_size = size; | |
13027 | break; | |
13028 | case DW_SECT_ABBREV: | |
13029 | sections.abbrev_offset = offset; | |
13030 | sections.abbrev_size = size; | |
13031 | break; | |
13032 | case DW_SECT_LINE: | |
13033 | sections.line_offset = offset; | |
13034 | sections.line_size = size; | |
13035 | break; | |
13036 | case DW_SECT_LOC: | |
13037 | sections.loc_offset = offset; | |
13038 | sections.loc_size = size; | |
13039 | break; | |
13040 | case DW_SECT_STR_OFFSETS: | |
13041 | sections.str_offsets_offset = offset; | |
13042 | sections.str_offsets_size = size; | |
13043 | break; | |
13044 | case DW_SECT_MACINFO: | |
13045 | sections.macinfo_offset = offset; | |
13046 | sections.macinfo_size = size; | |
13047 | break; | |
13048 | case DW_SECT_MACRO: | |
13049 | sections.macro_offset = offset; | |
13050 | sections.macro_size = size; | |
13051 | break; | |
13052 | } | |
13053 | } | |
13054 | ||
13055 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
13056 | have dwo_unit "live" in that. At least for now. | |
13057 | ||
13058 | The DWP file can be made up of a random collection of CUs and TUs. | |
13059 | However, for each CU + set of TUs that came from the same original DWO | |
13060 | file, we can combine them back into a virtual DWO file to save space | |
13061 | (fewer struct dwo_file objects to allocate). Remember that for really | |
13062 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
13063 | ||
791afaa2 TT |
13064 | std::string virtual_dwo_name = |
13065 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
13066 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
13067 | (long) (sections.line_size ? sections.line_offset : 0), | |
13068 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
13069 | (long) (sections.str_offsets_size | |
13070 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 13071 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
13072 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
13073 | virtual_dwo_name.c_str (), | |
13074 | comp_dir); | |
73869dc2 DE |
13075 | /* Create one if necessary. */ |
13076 | if (*dwo_file_slot == NULL) | |
13077 | { | |
b4f54984 | 13078 | if (dwarf_read_debug) |
73869dc2 DE |
13079 | { |
13080 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 13081 | virtual_dwo_name.c_str ()); |
73869dc2 DE |
13082 | } |
13083 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
13084 | dwo_file->dwo_name |
13085 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
13086 | virtual_dwo_name.c_str (), |
13087 | virtual_dwo_name.size ()); | |
73869dc2 DE |
13088 | dwo_file->comp_dir = comp_dir; |
13089 | dwo_file->sections.abbrev = | |
ed2dc618 | 13090 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
13091 | sections.abbrev_offset, sections.abbrev_size); |
13092 | dwo_file->sections.line = | |
ed2dc618 | 13093 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
13094 | sections.line_offset, sections.line_size); |
13095 | dwo_file->sections.loc = | |
ed2dc618 | 13096 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
13097 | sections.loc_offset, sections.loc_size); |
13098 | dwo_file->sections.macinfo = | |
ed2dc618 | 13099 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
13100 | sections.macinfo_offset, sections.macinfo_size); |
13101 | dwo_file->sections.macro = | |
ed2dc618 | 13102 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
13103 | sections.macro_offset, sections.macro_size); |
13104 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
13105 | create_dwp_v2_section (dwarf2_per_objfile, |
13106 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
13107 | sections.str_offsets_offset, |
13108 | sections.str_offsets_size); | |
13109 | /* The "str" section is global to the entire DWP file. */ | |
13110 | dwo_file->sections.str = dwp_file->sections.str; | |
13111 | /* The info or types section is assigned below to dwo_unit, | |
13112 | there's no need to record it in dwo_file. | |
13113 | Also, we can't simply record type sections in dwo_file because | |
13114 | we record a pointer into the vector in dwo_unit. As we collect more | |
13115 | types we'll grow the vector and eventually have to reallocate space | |
13116 | for it, invalidating all copies of pointers into the previous | |
13117 | contents. */ | |
13118 | *dwo_file_slot = dwo_file; | |
13119 | } | |
13120 | else | |
13121 | { | |
b4f54984 | 13122 | if (dwarf_read_debug) |
73869dc2 DE |
13123 | { |
13124 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 13125 | virtual_dwo_name.c_str ()); |
73869dc2 | 13126 | } |
9a3c8263 | 13127 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 13128 | } |
73869dc2 DE |
13129 | |
13130 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
13131 | dwo_unit->dwo_file = dwo_file; | |
13132 | dwo_unit->signature = signature; | |
8d749320 SM |
13133 | dwo_unit->section = |
13134 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
13135 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
13136 | is_debug_types | |
73869dc2 DE |
13137 | ? &dwp_file->sections.types |
13138 | : &dwp_file->sections.info, | |
13139 | sections.info_or_types_offset, | |
13140 | sections.info_or_types_size); | |
13141 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
13142 | ||
13143 | return dwo_unit; | |
13144 | } | |
13145 | ||
57d63ce2 DE |
13146 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
13147 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
13148 | |
13149 | static struct dwo_unit * | |
ed2dc618 SM |
13150 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13151 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 13152 | ULONGEST signature, int is_debug_types) |
80626a55 | 13153 | { |
57d63ce2 DE |
13154 | const struct dwp_hash_table *dwp_htab = |
13155 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 | 13156 | bfd *dbfd = dwp_file->dbfd; |
57d63ce2 | 13157 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
13158 | uint32_t hash = signature & mask; |
13159 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
13160 | unsigned int i; | |
13161 | void **slot; | |
870f88f7 | 13162 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
13163 | |
13164 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
13165 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
13166 | slot = htab_find_slot (is_debug_types |
13167 | ? dwp_file->loaded_tus | |
13168 | : dwp_file->loaded_cus, | |
13169 | &find_dwo_cu, INSERT); | |
80626a55 DE |
13170 | |
13171 | if (*slot != NULL) | |
9a3c8263 | 13172 | return (struct dwo_unit *) *slot; |
80626a55 DE |
13173 | |
13174 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 13175 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
13176 | { |
13177 | ULONGEST signature_in_table; | |
13178 | ||
13179 | signature_in_table = | |
57d63ce2 | 13180 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
13181 | if (signature_in_table == signature) |
13182 | { | |
57d63ce2 DE |
13183 | uint32_t unit_index = |
13184 | read_4_bytes (dbfd, | |
13185 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 13186 | |
73869dc2 DE |
13187 | if (dwp_file->version == 1) |
13188 | { | |
ed2dc618 SM |
13189 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
13190 | dwp_file, unit_index, | |
73869dc2 DE |
13191 | comp_dir, signature, |
13192 | is_debug_types); | |
13193 | } | |
13194 | else | |
13195 | { | |
ed2dc618 SM |
13196 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
13197 | dwp_file, unit_index, | |
73869dc2 DE |
13198 | comp_dir, signature, |
13199 | is_debug_types); | |
13200 | } | |
9a3c8263 | 13201 | return (struct dwo_unit *) *slot; |
80626a55 DE |
13202 | } |
13203 | if (signature_in_table == 0) | |
13204 | return NULL; | |
13205 | hash = (hash + hash2) & mask; | |
13206 | } | |
13207 | ||
13208 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
13209 | " [in module %s]"), | |
13210 | dwp_file->name); | |
13211 | } | |
13212 | ||
ab5088bf | 13213 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
13214 | Open the file specified by FILE_NAME and hand it off to BFD for |
13215 | preliminary analysis. Return a newly initialized bfd *, which | |
13216 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 13217 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
13218 | SEARCH_CWD is true if the current directory is to be searched. |
13219 | It will be searched before debug-file-directory. | |
13aaf454 DE |
13220 | If successful, the file is added to the bfd include table of the |
13221 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 13222 | If unable to find/open the file, return NULL. |
3019eac3 DE |
13223 | NOTE: This function is derived from symfile_bfd_open. */ |
13224 | ||
192b62ce | 13225 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
13226 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13227 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 13228 | { |
24b9144d | 13229 | int desc; |
9c02c129 DE |
13230 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
13231 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
13232 | to debug_file_directory. */ | |
e0cc99a6 | 13233 | const char *search_path; |
9c02c129 DE |
13234 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
13235 | ||
e0cc99a6 | 13236 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
13237 | if (search_cwd) |
13238 | { | |
13239 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
13240 | { |
13241 | search_path_holder.reset (concat (".", dirname_separator_string, | |
13242 | debug_file_directory, | |
13243 | (char *) NULL)); | |
13244 | search_path = search_path_holder.get (); | |
13245 | } | |
6ac97d4c | 13246 | else |
e0cc99a6 | 13247 | search_path = "."; |
6ac97d4c | 13248 | } |
9c02c129 | 13249 | else |
e0cc99a6 | 13250 | search_path = debug_file_directory; |
3019eac3 | 13251 | |
24b9144d | 13252 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
13253 | if (is_dwp) |
13254 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
13255 | |
13256 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 13257 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
13258 | O_RDONLY | O_BINARY, &absolute_name); |
13259 | if (desc < 0) | |
13260 | return NULL; | |
13261 | ||
e0cc99a6 TT |
13262 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
13263 | gnutarget, desc)); | |
9c02c129 DE |
13264 | if (sym_bfd == NULL) |
13265 | return NULL; | |
192b62ce | 13266 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 13267 | |
192b62ce TT |
13268 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
13269 | return NULL; | |
3019eac3 | 13270 | |
13aaf454 DE |
13271 | /* Success. Record the bfd as having been included by the objfile's bfd. |
13272 | This is important because things like demangled_names_hash lives in the | |
13273 | objfile's per_bfd space and may have references to things like symbol | |
13274 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 13275 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 13276 | |
3019eac3 DE |
13277 | return sym_bfd; |
13278 | } | |
13279 | ||
ab5088bf | 13280 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
13281 | COMP_DIR is the DW_AT_comp_dir attribute. |
13282 | The result is the bfd handle of the file. | |
13283 | If there is a problem finding or opening the file, return NULL. | |
13284 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13285 | same as symfile_bfd_open. */ | |
13286 | ||
192b62ce | 13287 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
13288 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13289 | const char *file_name, const char *comp_dir) | |
3019eac3 | 13290 | { |
80626a55 | 13291 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
13292 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
13293 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
13294 | |
13295 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
13296 | ||
13297 | if (comp_dir != NULL) | |
13298 | { | |
b36cec19 PA |
13299 | char *path_to_try = concat (comp_dir, SLASH_STRING, |
13300 | file_name, (char *) NULL); | |
3019eac3 DE |
13301 | |
13302 | /* NOTE: If comp_dir is a relative path, this will also try the | |
13303 | search path, which seems useful. */ | |
ed2dc618 SM |
13304 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
13305 | path_to_try, | |
13306 | 0 /*is_dwp*/, | |
192b62ce | 13307 | 1 /*search_cwd*/)); |
3019eac3 DE |
13308 | xfree (path_to_try); |
13309 | if (abfd != NULL) | |
13310 | return abfd; | |
13311 | } | |
13312 | ||
13313 | /* That didn't work, try debug-file-directory, which, despite its name, | |
13314 | is a list of paths. */ | |
13315 | ||
13316 | if (*debug_file_directory == '\0') | |
13317 | return NULL; | |
13318 | ||
ed2dc618 SM |
13319 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
13320 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
13321 | } |
13322 | ||
80626a55 DE |
13323 | /* This function is mapped across the sections and remembers the offset and |
13324 | size of each of the DWO debugging sections we are interested in. */ | |
13325 | ||
13326 | static void | |
13327 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
13328 | { | |
9a3c8263 | 13329 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
13330 | const struct dwop_section_names *names = &dwop_section_names; |
13331 | ||
13332 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
13333 | { | |
049412e3 | 13334 | dwo_sections->abbrev.s.section = sectp; |
80626a55 DE |
13335 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
13336 | } | |
13337 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
13338 | { | |
049412e3 | 13339 | dwo_sections->info.s.section = sectp; |
80626a55 DE |
13340 | dwo_sections->info.size = bfd_get_section_size (sectp); |
13341 | } | |
13342 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
13343 | { | |
049412e3 | 13344 | dwo_sections->line.s.section = sectp; |
80626a55 DE |
13345 | dwo_sections->line.size = bfd_get_section_size (sectp); |
13346 | } | |
13347 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
13348 | { | |
049412e3 | 13349 | dwo_sections->loc.s.section = sectp; |
80626a55 DE |
13350 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
13351 | } | |
13352 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
13353 | { | |
049412e3 | 13354 | dwo_sections->macinfo.s.section = sectp; |
80626a55 DE |
13355 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
13356 | } | |
13357 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13358 | { | |
049412e3 | 13359 | dwo_sections->macro.s.section = sectp; |
80626a55 DE |
13360 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
13361 | } | |
13362 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
13363 | { | |
049412e3 | 13364 | dwo_sections->str.s.section = sectp; |
80626a55 DE |
13365 | dwo_sections->str.size = bfd_get_section_size (sectp); |
13366 | } | |
13367 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13368 | { | |
049412e3 | 13369 | dwo_sections->str_offsets.s.section = sectp; |
80626a55 DE |
13370 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
13371 | } | |
13372 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13373 | { | |
13374 | struct dwarf2_section_info type_section; | |
13375 | ||
13376 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 13377 | type_section.s.section = sectp; |
80626a55 DE |
13378 | type_section.size = bfd_get_section_size (sectp); |
13379 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
13380 | &type_section); | |
13381 | } | |
13382 | } | |
13383 | ||
ab5088bf | 13384 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 13385 | by PER_CU. This is for the non-DWP case. |
80626a55 | 13386 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
13387 | |
13388 | static struct dwo_file * | |
0ac5b59e DE |
13389 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
13390 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 13391 | { |
ed2dc618 | 13392 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 13393 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 | 13394 | struct dwo_file *dwo_file; |
3019eac3 DE |
13395 | struct cleanup *cleanups; |
13396 | ||
ed2dc618 | 13397 | gdb_bfd_ref_ptr dbfd (open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir)); |
80626a55 DE |
13398 | if (dbfd == NULL) |
13399 | { | |
b4f54984 | 13400 | if (dwarf_read_debug) |
80626a55 DE |
13401 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
13402 | return NULL; | |
13403 | } | |
13404 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
13405 | dwo_file->dwo_name = dwo_name; |
13406 | dwo_file->comp_dir = comp_dir; | |
192b62ce | 13407 | dwo_file->dbfd = dbfd.release (); |
3019eac3 | 13408 | |
ed2dc618 SM |
13409 | free_dwo_file_cleanup_data *cleanup_data = XNEW (free_dwo_file_cleanup_data); |
13410 | cleanup_data->dwo_file = dwo_file; | |
13411 | cleanup_data->dwarf2_per_objfile = dwarf2_per_objfile; | |
13412 | ||
13413 | cleanups = make_cleanup (free_dwo_file_cleanup, cleanup_data); | |
3019eac3 | 13414 | |
192b62ce TT |
13415 | bfd_map_over_sections (dwo_file->dbfd, dwarf2_locate_dwo_sections, |
13416 | &dwo_file->sections); | |
3019eac3 | 13417 | |
ed2dc618 SM |
13418 | create_cus_hash_table (dwarf2_per_objfile, *dwo_file, dwo_file->sections.info, |
13419 | dwo_file->cus); | |
3019eac3 | 13420 | |
ed2dc618 SM |
13421 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file, |
13422 | dwo_file->sections.types, dwo_file->tus); | |
3019eac3 DE |
13423 | |
13424 | discard_cleanups (cleanups); | |
13425 | ||
b4f54984 | 13426 | if (dwarf_read_debug) |
80626a55 DE |
13427 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
13428 | ||
3019eac3 DE |
13429 | return dwo_file; |
13430 | } | |
13431 | ||
80626a55 | 13432 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
13433 | size of each of the DWP debugging sections common to version 1 and 2 that |
13434 | we are interested in. */ | |
3019eac3 | 13435 | |
80626a55 | 13436 | static void |
73869dc2 DE |
13437 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
13438 | void *dwp_file_ptr) | |
3019eac3 | 13439 | { |
9a3c8263 | 13440 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
13441 | const struct dwop_section_names *names = &dwop_section_names; |
13442 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 13443 | |
80626a55 | 13444 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 13445 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
13446 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
13447 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 13448 | |
80626a55 DE |
13449 | /* Look for specific sections that we need. */ |
13450 | if (section_is_p (sectp->name, &names->str_dwo)) | |
13451 | { | |
049412e3 | 13452 | dwp_file->sections.str.s.section = sectp; |
80626a55 DE |
13453 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
13454 | } | |
13455 | else if (section_is_p (sectp->name, &names->cu_index)) | |
13456 | { | |
049412e3 | 13457 | dwp_file->sections.cu_index.s.section = sectp; |
80626a55 DE |
13458 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
13459 | } | |
13460 | else if (section_is_p (sectp->name, &names->tu_index)) | |
13461 | { | |
049412e3 | 13462 | dwp_file->sections.tu_index.s.section = sectp; |
80626a55 DE |
13463 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
13464 | } | |
13465 | } | |
3019eac3 | 13466 | |
73869dc2 DE |
13467 | /* This function is mapped across the sections and remembers the offset and |
13468 | size of each of the DWP version 2 debugging sections that we are interested | |
13469 | in. This is split into a separate function because we don't know if we | |
13470 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
13471 | ||
13472 | static void | |
13473 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
13474 | { | |
9a3c8263 | 13475 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
13476 | const struct dwop_section_names *names = &dwop_section_names; |
13477 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
13478 | ||
13479 | /* Record the ELF section number for later lookup: this is what the | |
13480 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
13481 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
13482 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
13483 | ||
13484 | /* Look for specific sections that we need. */ | |
13485 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
13486 | { | |
049412e3 | 13487 | dwp_file->sections.abbrev.s.section = sectp; |
73869dc2 DE |
13488 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); |
13489 | } | |
13490 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
13491 | { | |
049412e3 | 13492 | dwp_file->sections.info.s.section = sectp; |
73869dc2 DE |
13493 | dwp_file->sections.info.size = bfd_get_section_size (sectp); |
13494 | } | |
13495 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
13496 | { | |
049412e3 | 13497 | dwp_file->sections.line.s.section = sectp; |
73869dc2 DE |
13498 | dwp_file->sections.line.size = bfd_get_section_size (sectp); |
13499 | } | |
13500 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
13501 | { | |
049412e3 | 13502 | dwp_file->sections.loc.s.section = sectp; |
73869dc2 DE |
13503 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); |
13504 | } | |
13505 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
13506 | { | |
049412e3 | 13507 | dwp_file->sections.macinfo.s.section = sectp; |
73869dc2 DE |
13508 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); |
13509 | } | |
13510 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13511 | { | |
049412e3 | 13512 | dwp_file->sections.macro.s.section = sectp; |
73869dc2 DE |
13513 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); |
13514 | } | |
13515 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13516 | { | |
049412e3 | 13517 | dwp_file->sections.str_offsets.s.section = sectp; |
73869dc2 DE |
13518 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); |
13519 | } | |
13520 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13521 | { | |
049412e3 | 13522 | dwp_file->sections.types.s.section = sectp; |
73869dc2 DE |
13523 | dwp_file->sections.types.size = bfd_get_section_size (sectp); |
13524 | } | |
13525 | } | |
13526 | ||
80626a55 | 13527 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13528 | |
80626a55 DE |
13529 | static hashval_t |
13530 | hash_dwp_loaded_cutus (const void *item) | |
13531 | { | |
9a3c8263 | 13532 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13533 | |
80626a55 DE |
13534 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13535 | return dwo_unit->signature; | |
3019eac3 DE |
13536 | } |
13537 | ||
80626a55 | 13538 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13539 | |
80626a55 DE |
13540 | static int |
13541 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13542 | { |
9a3c8263 SM |
13543 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13544 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13545 | |
80626a55 DE |
13546 | return dua->signature == dub->signature; |
13547 | } | |
3019eac3 | 13548 | |
80626a55 | 13549 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13550 | |
80626a55 DE |
13551 | static htab_t |
13552 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
13553 | { | |
13554 | return htab_create_alloc_ex (3, | |
13555 | hash_dwp_loaded_cutus, | |
13556 | eq_dwp_loaded_cutus, | |
13557 | NULL, | |
13558 | &objfile->objfile_obstack, | |
13559 | hashtab_obstack_allocate, | |
13560 | dummy_obstack_deallocate); | |
13561 | } | |
3019eac3 | 13562 | |
ab5088bf DE |
13563 | /* Try to open DWP file FILE_NAME. |
13564 | The result is the bfd handle of the file. | |
13565 | If there is a problem finding or opening the file, return NULL. | |
13566 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13567 | same as symfile_bfd_open. */ | |
13568 | ||
192b62ce | 13569 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
13570 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13571 | const char *file_name) | |
ab5088bf | 13572 | { |
ed2dc618 SM |
13573 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
13574 | 1 /*is_dwp*/, | |
192b62ce | 13575 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13576 | if (abfd != NULL) |
13577 | return abfd; | |
13578 | ||
13579 | /* Work around upstream bug 15652. | |
13580 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13581 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13582 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13583 | of the executable's path may have discarded the needed info. | |
13584 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13585 | .gnu_debuglink, but that doesn't exist yet.] | |
13586 | Strip the directory from FILE_NAME and search again. */ | |
13587 | if (*debug_file_directory != '\0') | |
13588 | { | |
13589 | /* Don't implicitly search the current directory here. | |
13590 | If the user wants to search "." to handle this case, | |
13591 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
13592 | return try_open_dwop_file (dwarf2_per_objfile, |
13593 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
13594 | 0 /*search_cwd*/); |
13595 | } | |
13596 | ||
13597 | return NULL; | |
ab5088bf DE |
13598 | } |
13599 | ||
80626a55 DE |
13600 | /* Initialize the use of the DWP file for the current objfile. |
13601 | By convention the name of the DWP file is ${objfile}.dwp. | |
13602 | The result is NULL if it can't be found. */ | |
a766d390 | 13603 | |
80626a55 | 13604 | static struct dwp_file * |
ed2dc618 | 13605 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
13606 | { |
13607 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13608 | struct dwp_file *dwp_file; | |
80626a55 | 13609 | |
82bf32bc JK |
13610 | /* Try to find first .dwp for the binary file before any symbolic links |
13611 | resolving. */ | |
6c447423 DE |
13612 | |
13613 | /* If the objfile is a debug file, find the name of the real binary | |
13614 | file and get the name of dwp file from there. */ | |
d721ba37 | 13615 | std::string dwp_name; |
6c447423 DE |
13616 | if (objfile->separate_debug_objfile_backlink != NULL) |
13617 | { | |
13618 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13619 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13620 | |
d721ba37 | 13621 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13622 | } |
13623 | else | |
d721ba37 PA |
13624 | dwp_name = objfile->original_name; |
13625 | ||
13626 | dwp_name += ".dwp"; | |
80626a55 | 13627 | |
ed2dc618 | 13628 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13629 | if (dbfd == NULL |
13630 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13631 | { | |
13632 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13633 | dwp_name = objfile_name (objfile); |
13634 | dwp_name += ".dwp"; | |
ed2dc618 | 13635 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13636 | } |
13637 | ||
80626a55 DE |
13638 | if (dbfd == NULL) |
13639 | { | |
b4f54984 | 13640 | if (dwarf_read_debug) |
d721ba37 | 13641 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
80626a55 | 13642 | return NULL; |
3019eac3 | 13643 | } |
80626a55 | 13644 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
192b62ce TT |
13645 | dwp_file->name = bfd_get_filename (dbfd.get ()); |
13646 | dwp_file->dbfd = dbfd.release (); | |
c906108c | 13647 | |
80626a55 | 13648 | /* +1: section 0 is unused */ |
192b62ce | 13649 | dwp_file->num_sections = bfd_count_sections (dwp_file->dbfd) + 1; |
80626a55 DE |
13650 | dwp_file->elf_sections = |
13651 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
13652 | dwp_file->num_sections, asection *); | |
13653 | ||
192b62ce TT |
13654 | bfd_map_over_sections (dwp_file->dbfd, dwarf2_locate_common_dwp_sections, |
13655 | dwp_file); | |
80626a55 | 13656 | |
ed2dc618 | 13657 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file, 0); |
80626a55 | 13658 | |
ed2dc618 | 13659 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file, 1); |
80626a55 | 13660 | |
73869dc2 | 13661 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13662 | if (dwp_file->cus && dwp_file->tus |
13663 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13664 | { |
13665 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13666 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13667 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13668 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13669 | " TU version %s [in DWP file %s]"), | |
13670 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13671 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13672 | } |
08302ed2 DE |
13673 | |
13674 | if (dwp_file->cus) | |
13675 | dwp_file->version = dwp_file->cus->version; | |
13676 | else if (dwp_file->tus) | |
13677 | dwp_file->version = dwp_file->tus->version; | |
13678 | else | |
13679 | dwp_file->version = 2; | |
73869dc2 DE |
13680 | |
13681 | if (dwp_file->version == 2) | |
192b62ce TT |
13682 | bfd_map_over_sections (dwp_file->dbfd, dwarf2_locate_v2_dwp_sections, |
13683 | dwp_file); | |
73869dc2 | 13684 | |
19ac8c2e DE |
13685 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
13686 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 13687 | |
b4f54984 | 13688 | if (dwarf_read_debug) |
80626a55 DE |
13689 | { |
13690 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
13691 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
13692 | " %s CUs, %s TUs\n", |
13693 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13694 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13695 | } |
13696 | ||
13697 | return dwp_file; | |
3019eac3 | 13698 | } |
c906108c | 13699 | |
ab5088bf DE |
13700 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13701 | ||
13702 | static struct dwp_file * | |
ed2dc618 | 13703 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
13704 | { |
13705 | if (! dwarf2_per_objfile->dwp_checked) | |
13706 | { | |
ed2dc618 SM |
13707 | dwarf2_per_objfile->dwp_file |
13708 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
13709 | dwarf2_per_objfile->dwp_checked = 1; |
13710 | } | |
13711 | return dwarf2_per_objfile->dwp_file; | |
13712 | } | |
13713 | ||
80626a55 DE |
13714 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13715 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13716 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13717 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13718 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13719 | ||
13720 | This is called, for example, when wanting to read a variable with a | |
13721 | complex location. Therefore we don't want to do file i/o for every call. | |
13722 | Therefore we don't want to look for a DWO file on every call. | |
13723 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13724 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13725 | for a DWO file. | |
13726 | ||
1c658ad5 | 13727 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13728 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13729 | |
3019eac3 | 13730 | static struct dwo_unit * |
80626a55 DE |
13731 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
13732 | const char *dwo_name, const char *comp_dir, | |
13733 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 13734 | { |
ed2dc618 | 13735 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 13736 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
13737 | const char *kind = is_debug_types ? "TU" : "CU"; |
13738 | void **dwo_file_slot; | |
3019eac3 | 13739 | struct dwo_file *dwo_file; |
80626a55 | 13740 | struct dwp_file *dwp_file; |
cb1df416 | 13741 | |
6a506a2d DE |
13742 | /* First see if there's a DWP file. |
13743 | If we have a DWP file but didn't find the DWO inside it, don't | |
13744 | look for the original DWO file. It makes gdb behave differently | |
13745 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13746 | |
ed2dc618 | 13747 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 13748 | if (dwp_file != NULL) |
cf2c3c16 | 13749 | { |
80626a55 DE |
13750 | const struct dwp_hash_table *dwp_htab = |
13751 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13752 | ||
13753 | if (dwp_htab != NULL) | |
13754 | { | |
13755 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 13756 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 13757 | signature, is_debug_types); |
80626a55 DE |
13758 | |
13759 | if (dwo_cutu != NULL) | |
13760 | { | |
b4f54984 | 13761 | if (dwarf_read_debug) |
80626a55 DE |
13762 | { |
13763 | fprintf_unfiltered (gdb_stdlog, | |
13764 | "Virtual DWO %s %s found: @%s\n", | |
13765 | kind, hex_string (signature), | |
13766 | host_address_to_string (dwo_cutu)); | |
13767 | } | |
13768 | return dwo_cutu; | |
13769 | } | |
13770 | } | |
13771 | } | |
6a506a2d | 13772 | else |
80626a55 | 13773 | { |
6a506a2d | 13774 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13775 | |
ed2dc618 SM |
13776 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
13777 | dwo_name, comp_dir); | |
6a506a2d | 13778 | if (*dwo_file_slot == NULL) |
80626a55 | 13779 | { |
6a506a2d DE |
13780 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
13781 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 13782 | } |
6a506a2d | 13783 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13784 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13785 | |
6a506a2d | 13786 | if (dwo_file != NULL) |
19c3d4c9 | 13787 | { |
6a506a2d DE |
13788 | struct dwo_unit *dwo_cutu = NULL; |
13789 | ||
13790 | if (is_debug_types && dwo_file->tus) | |
13791 | { | |
13792 | struct dwo_unit find_dwo_cutu; | |
13793 | ||
13794 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13795 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
13796 | dwo_cutu |
13797 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d | 13798 | } |
33c5cd75 | 13799 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13800 | { |
33c5cd75 DB |
13801 | struct dwo_unit find_dwo_cutu; |
13802 | ||
13803 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13804 | find_dwo_cutu.signature = signature; | |
13805 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus, | |
13806 | &find_dwo_cutu); | |
6a506a2d DE |
13807 | } |
13808 | ||
13809 | if (dwo_cutu != NULL) | |
13810 | { | |
b4f54984 | 13811 | if (dwarf_read_debug) |
6a506a2d DE |
13812 | { |
13813 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
13814 | kind, dwo_name, hex_string (signature), | |
13815 | host_address_to_string (dwo_cutu)); | |
13816 | } | |
13817 | return dwo_cutu; | |
80626a55 DE |
13818 | } |
13819 | } | |
2e276125 | 13820 | } |
9cdd5dbd | 13821 | |
80626a55 DE |
13822 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13823 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13824 | correctly to find the file. */ | |
13825 | ||
b4f54984 | 13826 | if (dwarf_read_debug) |
80626a55 DE |
13827 | { |
13828 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
13829 | kind, dwo_name, hex_string (signature)); | |
13830 | } | |
3019eac3 | 13831 | |
6656a72d DE |
13832 | /* This is a warning and not a complaint because it can be caused by |
13833 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13834 | { |
13835 | /* Print the name of the DWP file if we looked there, helps the user | |
13836 | better diagnose the problem. */ | |
791afaa2 | 13837 | std::string dwp_text; |
43942612 DE |
13838 | |
13839 | if (dwp_file != NULL) | |
791afaa2 TT |
13840 | dwp_text = string_printf (" [in DWP file %s]", |
13841 | lbasename (dwp_file->name)); | |
43942612 | 13842 | |
9d8780f0 | 13843 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
13844 | " [in module %s]"), |
13845 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 13846 | dwp_text.c_str (), |
43942612 | 13847 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 13848 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 13849 | } |
3019eac3 | 13850 | return NULL; |
5fb290d7 DJ |
13851 | } |
13852 | ||
80626a55 DE |
13853 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13854 | See lookup_dwo_cutu_unit for details. */ | |
13855 | ||
13856 | static struct dwo_unit * | |
13857 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
13858 | const char *dwo_name, const char *comp_dir, | |
13859 | ULONGEST signature) | |
13860 | { | |
13861 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
13862 | } | |
13863 | ||
13864 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13865 | See lookup_dwo_cutu_unit for details. */ | |
13866 | ||
13867 | static struct dwo_unit * | |
13868 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
13869 | const char *dwo_name, const char *comp_dir) | |
13870 | { | |
13871 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
13872 | } | |
13873 | ||
89e63ee4 DE |
13874 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13875 | ||
13876 | static int | |
13877 | queue_and_load_dwo_tu (void **slot, void *info) | |
13878 | { | |
13879 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
13880 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
13881 | ULONGEST signature = dwo_unit->signature; | |
13882 | struct signatured_type *sig_type = | |
13883 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
13884 | ||
13885 | if (sig_type != NULL) | |
13886 | { | |
13887 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13888 | ||
13889 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13890 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13891 | while processing PER_CU. */ | |
13892 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
13893 | load_full_type_unit (sig_cu); | |
13894 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
13895 | } | |
13896 | ||
13897 | return 1; | |
13898 | } | |
13899 | ||
13900 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
13901 | The DWO may have the only definition of the type, though it may not be | |
13902 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13903 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13904 | ||
13905 | static void | |
13906 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
13907 | { | |
13908 | struct dwo_unit *dwo_unit; | |
13909 | struct dwo_file *dwo_file; | |
13910 | ||
13911 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 13912 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
13913 | gdb_assert (per_cu->cu != NULL); |
13914 | ||
13915 | dwo_unit = per_cu->cu->dwo_unit; | |
13916 | gdb_assert (dwo_unit != NULL); | |
13917 | ||
13918 | dwo_file = dwo_unit->dwo_file; | |
13919 | if (dwo_file->tus != NULL) | |
13920 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
13921 | } | |
13922 | ||
3019eac3 DE |
13923 | /* Free all resources associated with DWO_FILE. |
13924 | Close the DWO file and munmap the sections. | |
13925 | All memory should be on the objfile obstack. */ | |
348e048f DE |
13926 | |
13927 | static void | |
3019eac3 | 13928 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 13929 | { |
348e048f | 13930 | |
5c6fa7ab | 13931 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 13932 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 13933 | |
3019eac3 DE |
13934 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
13935 | } | |
348e048f | 13936 | |
3019eac3 | 13937 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 13938 | |
3019eac3 DE |
13939 | static void |
13940 | free_dwo_file_cleanup (void *arg) | |
13941 | { | |
ed2dc618 SM |
13942 | struct free_dwo_file_cleanup_data *data |
13943 | = (struct free_dwo_file_cleanup_data *) arg; | |
13944 | struct objfile *objfile = data->dwarf2_per_objfile->objfile; | |
348e048f | 13945 | |
ed2dc618 SM |
13946 | free_dwo_file (data->dwo_file, objfile); |
13947 | ||
13948 | xfree (data); | |
3019eac3 | 13949 | } |
348e048f | 13950 | |
3019eac3 | 13951 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 13952 | |
3019eac3 DE |
13953 | static int |
13954 | free_dwo_file_from_slot (void **slot, void *info) | |
13955 | { | |
13956 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
13957 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 13958 | |
3019eac3 | 13959 | free_dwo_file (dwo_file, objfile); |
348e048f | 13960 | |
3019eac3 DE |
13961 | return 1; |
13962 | } | |
348e048f | 13963 | |
3019eac3 | 13964 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 13965 | |
3019eac3 DE |
13966 | static void |
13967 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
13968 | { | |
13969 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 13970 | } |
3019eac3 DE |
13971 | \f |
13972 | /* Read in various DIEs. */ | |
348e048f | 13973 | |
d389af10 | 13974 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13975 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13976 | already referenced by DW_AT_abstract_origin from the children of the | |
13977 | current DIE. */ | |
d389af10 JK |
13978 | |
13979 | static void | |
13980 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13981 | { | |
13982 | struct die_info *child_die; | |
791afaa2 | 13983 | sect_offset *offsetp; |
d389af10 JK |
13984 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13985 | struct die_info *origin_die; | |
13986 | /* Iterator of the ORIGIN_DIE children. */ | |
13987 | struct die_info *origin_child_die; | |
d389af10 | 13988 | struct attribute *attr; |
cd02d79d PA |
13989 | struct dwarf2_cu *origin_cu; |
13990 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13991 | |
13992 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13993 | if (!attr) | |
13994 | return; | |
13995 | ||
cd02d79d PA |
13996 | /* Note that following die references may follow to a die in a |
13997 | different cu. */ | |
13998 | ||
13999 | origin_cu = cu; | |
14000 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
14001 | ||
14002 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
14003 | symbols in. */ | |
14004 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
14005 | origin_cu->list_in_scope = cu->list_in_scope; | |
14006 | ||
edb3359d DJ |
14007 | if (die->tag != origin_die->tag |
14008 | && !(die->tag == DW_TAG_inlined_subroutine | |
14009 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 | 14010 | complaint (&symfile_complaints, |
9d8780f0 SM |
14011 | _("DIE %s and its abstract origin %s have different tags"), |
14012 | sect_offset_str (die->sect_off), | |
14013 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 14014 | |
791afaa2 | 14015 | std::vector<sect_offset> offsets; |
d389af10 | 14016 | |
3ea89b92 PMR |
14017 | for (child_die = die->child; |
14018 | child_die && child_die->tag; | |
14019 | child_die = sibling_die (child_die)) | |
14020 | { | |
14021 | struct die_info *child_origin_die; | |
14022 | struct dwarf2_cu *child_origin_cu; | |
14023 | ||
14024 | /* We are trying to process concrete instance entries: | |
216f72a1 | 14025 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
14026 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
14027 | present in the abstract instance but not referenced in the concrete | |
14028 | one. */ | |
216f72a1 JK |
14029 | if (child_die->tag == DW_TAG_call_site |
14030 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
14031 | continue; |
14032 | ||
c38f313d DJ |
14033 | /* For each CHILD_DIE, find the corresponding child of |
14034 | ORIGIN_DIE. If there is more than one layer of | |
14035 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
14036 | but GCC versions at least through 4.4 generate this (GCC PR | |
14037 | 40573). */ | |
3ea89b92 PMR |
14038 | child_origin_die = child_die; |
14039 | child_origin_cu = cu; | |
c38f313d DJ |
14040 | while (1) |
14041 | { | |
cd02d79d PA |
14042 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
14043 | child_origin_cu); | |
c38f313d DJ |
14044 | if (attr == NULL) |
14045 | break; | |
cd02d79d PA |
14046 | child_origin_die = follow_die_ref (child_origin_die, attr, |
14047 | &child_origin_cu); | |
c38f313d DJ |
14048 | } |
14049 | ||
d389af10 JK |
14050 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
14051 | counterpart may exist. */ | |
c38f313d | 14052 | if (child_origin_die != child_die) |
d389af10 | 14053 | { |
edb3359d DJ |
14054 | if (child_die->tag != child_origin_die->tag |
14055 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
14056 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 | 14057 | complaint (&symfile_complaints, |
9d8780f0 | 14058 | _("Child DIE %s and its abstract origin %s have " |
9c541725 | 14059 | "different tags"), |
9d8780f0 SM |
14060 | sect_offset_str (child_die->sect_off), |
14061 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d DJ |
14062 | if (child_origin_die->parent != origin_die) |
14063 | complaint (&symfile_complaints, | |
9d8780f0 | 14064 | _("Child DIE %s and its abstract origin %s have " |
9c541725 | 14065 | "different parents"), |
9d8780f0 SM |
14066 | sect_offset_str (child_die->sect_off), |
14067 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 14068 | else |
791afaa2 | 14069 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 14070 | } |
d389af10 | 14071 | } |
791afaa2 TT |
14072 | std::sort (offsets.begin (), offsets.end ()); |
14073 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
14074 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 14075 | if (offsetp[-1] == *offsetp) |
3e43a32a | 14076 | complaint (&symfile_complaints, |
9d8780f0 SM |
14077 | _("Multiple children of DIE %s refer " |
14078 | "to DIE %s as their abstract origin"), | |
14079 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 14080 | |
791afaa2 | 14081 | offsetp = offsets.data (); |
d389af10 JK |
14082 | origin_child_die = origin_die->child; |
14083 | while (origin_child_die && origin_child_die->tag) | |
14084 | { | |
14085 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 14086 | while (offsetp < offsets_end |
9c541725 | 14087 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 14088 | offsetp++; |
b64f50a1 | 14089 | if (offsetp >= offsets_end |
9c541725 | 14090 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 14091 | { |
adde2bff DE |
14092 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
14093 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
14094 | This can happen with mutually referenced abstract_origins. | |
14095 | PR 16581. */ | |
14096 | if (!origin_child_die->in_process) | |
14097 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
14098 | } |
14099 | origin_child_die = sibling_die (origin_child_die); | |
14100 | } | |
cd02d79d | 14101 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
14102 | } |
14103 | ||
c906108c | 14104 | static void |
e7c27a73 | 14105 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14106 | { |
518817b3 | 14107 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 14108 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 14109 | struct context_stack *newobj; |
c906108c SS |
14110 | CORE_ADDR lowpc; |
14111 | CORE_ADDR highpc; | |
14112 | struct die_info *child_die; | |
edb3359d | 14113 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 14114 | const char *name; |
e142c38c | 14115 | CORE_ADDR baseaddr; |
801e3a5b | 14116 | struct block *block; |
edb3359d | 14117 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 14118 | std::vector<struct symbol *> template_args; |
34eaf542 | 14119 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
14120 | |
14121 | if (inlined_func) | |
14122 | { | |
14123 | /* If we do not have call site information, we can't show the | |
14124 | caller of this inlined function. That's too confusing, so | |
14125 | only use the scope for local variables. */ | |
14126 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
14127 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
14128 | if (call_line == NULL || call_file == NULL) | |
14129 | { | |
14130 | read_lexical_block_scope (die, cu); | |
14131 | return; | |
14132 | } | |
14133 | } | |
c906108c | 14134 | |
e142c38c DJ |
14135 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
14136 | ||
94af9270 | 14137 | name = dwarf2_name (die, cu); |
c906108c | 14138 | |
e8d05480 JB |
14139 | /* Ignore functions with missing or empty names. These are actually |
14140 | illegal according to the DWARF standard. */ | |
14141 | if (name == NULL) | |
14142 | { | |
14143 | complaint (&symfile_complaints, | |
9d8780f0 SM |
14144 | _("missing name for subprogram DIE at %s"), |
14145 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
14146 | return; |
14147 | } | |
14148 | ||
14149 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 14150 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 14151 | <= PC_BOUNDS_INVALID) |
e8d05480 | 14152 | { |
ae4d0c03 PM |
14153 | attr = dwarf2_attr (die, DW_AT_external, cu); |
14154 | if (!attr || !DW_UNSND (attr)) | |
14155 | complaint (&symfile_complaints, | |
3e43a32a | 14156 | _("cannot get low and high bounds " |
9d8780f0 SM |
14157 | "for subprogram DIE at %s"), |
14158 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
14159 | return; |
14160 | } | |
c906108c | 14161 | |
3e29f34a MR |
14162 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
14163 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 14164 | |
34eaf542 TT |
14165 | /* If we have any template arguments, then we must allocate a |
14166 | different sort of symbol. */ | |
14167 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
14168 | { | |
14169 | if (child_die->tag == DW_TAG_template_type_param | |
14170 | || child_die->tag == DW_TAG_template_value_param) | |
14171 | { | |
e623cf5d | 14172 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 14173 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
14174 | break; |
14175 | } | |
14176 | } | |
14177 | ||
fe978cb0 | 14178 | newobj = push_context (0, lowpc); |
5e2db402 TT |
14179 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
14180 | (struct symbol *) templ_func); | |
4c2df51b | 14181 | |
4cecd739 DJ |
14182 | /* If there is a location expression for DW_AT_frame_base, record |
14183 | it. */ | |
e142c38c | 14184 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 14185 | if (attr) |
fe978cb0 | 14186 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 14187 | |
63e43d3a PMR |
14188 | /* If there is a location for the static link, record it. */ |
14189 | newobj->static_link = NULL; | |
14190 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
14191 | if (attr) | |
14192 | { | |
224c3ddb SM |
14193 | newobj->static_link |
14194 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
63e43d3a PMR |
14195 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link); |
14196 | } | |
14197 | ||
e142c38c | 14198 | cu->list_in_scope = &local_symbols; |
c906108c | 14199 | |
639d11d3 | 14200 | if (die->child != NULL) |
c906108c | 14201 | { |
639d11d3 | 14202 | child_die = die->child; |
c906108c SS |
14203 | while (child_die && child_die->tag) |
14204 | { | |
34eaf542 TT |
14205 | if (child_die->tag == DW_TAG_template_type_param |
14206 | || child_die->tag == DW_TAG_template_value_param) | |
14207 | { | |
14208 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
14209 | ||
f1078f66 | 14210 | if (arg != NULL) |
2f4732b0 | 14211 | template_args.push_back (arg); |
34eaf542 TT |
14212 | } |
14213 | else | |
14214 | process_die (child_die, cu); | |
c906108c SS |
14215 | child_die = sibling_die (child_die); |
14216 | } | |
14217 | } | |
14218 | ||
d389af10 JK |
14219 | inherit_abstract_dies (die, cu); |
14220 | ||
4a811a97 UW |
14221 | /* If we have a DW_AT_specification, we might need to import using |
14222 | directives from the context of the specification DIE. See the | |
14223 | comment in determine_prefix. */ | |
14224 | if (cu->language == language_cplus | |
14225 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
14226 | { | |
14227 | struct dwarf2_cu *spec_cu = cu; | |
14228 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
14229 | ||
14230 | while (spec_die) | |
14231 | { | |
14232 | child_die = spec_die->child; | |
14233 | while (child_die && child_die->tag) | |
14234 | { | |
14235 | if (child_die->tag == DW_TAG_imported_module) | |
14236 | process_die (child_die, spec_cu); | |
14237 | child_die = sibling_die (child_die); | |
14238 | } | |
14239 | ||
14240 | /* In some cases, GCC generates specification DIEs that | |
14241 | themselves contain DW_AT_specification attributes. */ | |
14242 | spec_die = die_specification (spec_die, &spec_cu); | |
14243 | } | |
14244 | } | |
14245 | ||
fe978cb0 | 14246 | newobj = pop_context (); |
c906108c | 14247 | /* Make a block for the local symbols within. */ |
fe978cb0 | 14248 | block = finish_block (newobj->name, &local_symbols, newobj->old_blocks, |
63e43d3a | 14249 | newobj->static_link, lowpc, highpc); |
801e3a5b | 14250 | |
df8a16a1 | 14251 | /* For C++, set the block's scope. */ |
45280282 IB |
14252 | if ((cu->language == language_cplus |
14253 | || cu->language == language_fortran | |
c44af4eb TT |
14254 | || cu->language == language_d |
14255 | || cu->language == language_rust) | |
4d4ec4e5 | 14256 | && cu->processing_has_namespace_info) |
195a3f6c TT |
14257 | block_set_scope (block, determine_prefix (die, cu), |
14258 | &objfile->objfile_obstack); | |
df8a16a1 | 14259 | |
801e3a5b JB |
14260 | /* If we have address ranges, record them. */ |
14261 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 14262 | |
fe978cb0 | 14263 | gdbarch_make_symbol_special (gdbarch, newobj->name, objfile); |
3e29f34a | 14264 | |
34eaf542 | 14265 | /* Attach template arguments to function. */ |
2f4732b0 | 14266 | if (!template_args.empty ()) |
34eaf542 TT |
14267 | { |
14268 | gdb_assert (templ_func != NULL); | |
14269 | ||
2f4732b0 | 14270 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 14271 | templ_func->template_arguments |
8d749320 SM |
14272 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
14273 | templ_func->n_template_arguments); | |
34eaf542 | 14274 | memcpy (templ_func->template_arguments, |
2f4732b0 | 14275 | template_args.data (), |
34eaf542 | 14276 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
34eaf542 TT |
14277 | } |
14278 | ||
208d8187 JB |
14279 | /* In C++, we can have functions nested inside functions (e.g., when |
14280 | a function declares a class that has methods). This means that | |
14281 | when we finish processing a function scope, we may need to go | |
14282 | back to building a containing block's symbol lists. */ | |
fe978cb0 | 14283 | local_symbols = newobj->locals; |
22cee43f | 14284 | local_using_directives = newobj->local_using_directives; |
208d8187 | 14285 | |
921e78cf JB |
14286 | /* If we've finished processing a top-level function, subsequent |
14287 | symbols go in the file symbol list. */ | |
14288 | if (outermost_context_p ()) | |
e142c38c | 14289 | cu->list_in_scope = &file_symbols; |
c906108c SS |
14290 | } |
14291 | ||
14292 | /* Process all the DIES contained within a lexical block scope. Start | |
14293 | a new scope, process the dies, and then close the scope. */ | |
14294 | ||
14295 | static void | |
e7c27a73 | 14296 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14297 | { |
518817b3 | 14298 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 14299 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 14300 | struct context_stack *newobj; |
c906108c SS |
14301 | CORE_ADDR lowpc, highpc; |
14302 | struct die_info *child_die; | |
e142c38c DJ |
14303 | CORE_ADDR baseaddr; |
14304 | ||
14305 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
14306 | |
14307 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
14308 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
14309 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 14310 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 14311 | describe ranges. */ |
e385593e JK |
14312 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
14313 | { | |
14314 | case PC_BOUNDS_NOT_PRESENT: | |
14315 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
14316 | there was no wrapping by that DW_TAG_lexical_block. | |
14317 | GCC does no longer produces such DWARF since GCC r224161. */ | |
14318 | for (child_die = die->child; | |
14319 | child_die != NULL && child_die->tag; | |
14320 | child_die = sibling_die (child_die)) | |
14321 | process_die (child_die, cu); | |
14322 | return; | |
14323 | case PC_BOUNDS_INVALID: | |
14324 | return; | |
14325 | } | |
3e29f34a MR |
14326 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
14327 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c SS |
14328 | |
14329 | push_context (0, lowpc); | |
639d11d3 | 14330 | if (die->child != NULL) |
c906108c | 14331 | { |
639d11d3 | 14332 | child_die = die->child; |
c906108c SS |
14333 | while (child_die && child_die->tag) |
14334 | { | |
e7c27a73 | 14335 | process_die (child_die, cu); |
c906108c SS |
14336 | child_die = sibling_die (child_die); |
14337 | } | |
14338 | } | |
3ea89b92 | 14339 | inherit_abstract_dies (die, cu); |
fe978cb0 | 14340 | newobj = pop_context (); |
c906108c | 14341 | |
22cee43f | 14342 | if (local_symbols != NULL || local_using_directives != NULL) |
c906108c | 14343 | { |
801e3a5b | 14344 | struct block *block |
63e43d3a | 14345 | = finish_block (0, &local_symbols, newobj->old_blocks, NULL, |
fe978cb0 | 14346 | newobj->start_addr, highpc); |
801e3a5b JB |
14347 | |
14348 | /* Note that recording ranges after traversing children, as we | |
14349 | do here, means that recording a parent's ranges entails | |
14350 | walking across all its children's ranges as they appear in | |
14351 | the address map, which is quadratic behavior. | |
14352 | ||
14353 | It would be nicer to record the parent's ranges before | |
14354 | traversing its children, simply overriding whatever you find | |
14355 | there. But since we don't even decide whether to create a | |
14356 | block until after we've traversed its children, that's hard | |
14357 | to do. */ | |
14358 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 14359 | } |
fe978cb0 | 14360 | local_symbols = newobj->locals; |
22cee43f | 14361 | local_using_directives = newobj->local_using_directives; |
c906108c SS |
14362 | } |
14363 | ||
216f72a1 | 14364 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
14365 | |
14366 | static void | |
14367 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
14368 | { | |
518817b3 | 14369 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
14370 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
14371 | CORE_ADDR pc, baseaddr; | |
14372 | struct attribute *attr; | |
14373 | struct call_site *call_site, call_site_local; | |
14374 | void **slot; | |
14375 | int nparams; | |
14376 | struct die_info *child_die; | |
14377 | ||
14378 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14379 | ||
216f72a1 JK |
14380 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
14381 | if (attr == NULL) | |
14382 | { | |
14383 | /* This was a pre-DWARF-5 GNU extension alias | |
14384 | for DW_AT_call_return_pc. */ | |
14385 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
14386 | } | |
96408a79 SA |
14387 | if (!attr) |
14388 | { | |
14389 | complaint (&symfile_complaints, | |
216f72a1 | 14390 | _("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
14391 | "DIE %s [in module %s]"), |
14392 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14393 | return; |
14394 | } | |
31aa7e4e | 14395 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 14396 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
14397 | |
14398 | if (cu->call_site_htab == NULL) | |
14399 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
14400 | NULL, &objfile->objfile_obstack, | |
14401 | hashtab_obstack_allocate, NULL); | |
14402 | call_site_local.pc = pc; | |
14403 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
14404 | if (*slot != NULL) | |
14405 | { | |
14406 | complaint (&symfile_complaints, | |
216f72a1 | 14407 | _("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
14408 | "DIE %s [in module %s]"), |
14409 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 14410 | objfile_name (objfile)); |
96408a79 SA |
14411 | return; |
14412 | } | |
14413 | ||
14414 | /* Count parameters at the caller. */ | |
14415 | ||
14416 | nparams = 0; | |
14417 | for (child_die = die->child; child_die && child_die->tag; | |
14418 | child_die = sibling_die (child_die)) | |
14419 | { | |
216f72a1 JK |
14420 | if (child_die->tag != DW_TAG_call_site_parameter |
14421 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14422 | { |
14423 | complaint (&symfile_complaints, | |
216f72a1 | 14424 | _("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
14425 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14426 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 14427 | objfile_name (objfile)); |
96408a79 SA |
14428 | continue; |
14429 | } | |
14430 | ||
14431 | nparams++; | |
14432 | } | |
14433 | ||
224c3ddb SM |
14434 | call_site |
14435 | = ((struct call_site *) | |
14436 | obstack_alloc (&objfile->objfile_obstack, | |
14437 | sizeof (*call_site) | |
14438 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
14439 | *slot = call_site; |
14440 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
14441 | call_site->pc = pc; | |
14442 | ||
216f72a1 JK |
14443 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
14444 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
14445 | { |
14446 | struct die_info *func_die; | |
14447 | ||
14448 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
14449 | for (func_die = die->parent; | |
14450 | func_die && func_die->tag != DW_TAG_subprogram | |
14451 | && func_die->tag != DW_TAG_subroutine_type; | |
14452 | func_die = func_die->parent); | |
14453 | ||
216f72a1 JK |
14454 | /* DW_AT_call_all_calls is a superset |
14455 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 14456 | if (func_die |
216f72a1 | 14457 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 14458 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 14459 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
14460 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
14461 | { | |
14462 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
14463 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
14464 | both the initial caller containing the real return address PC and | |
14465 | the final callee containing the current PC of a chain of tail | |
14466 | calls do not need to have the tail call list complete. But any | |
14467 | function candidate for a virtual tail call frame searched via | |
14468 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
14469 | determined unambiguously. */ | |
14470 | } | |
14471 | else | |
14472 | { | |
14473 | struct type *func_type = NULL; | |
14474 | ||
14475 | if (func_die) | |
14476 | func_type = get_die_type (func_die, cu); | |
14477 | if (func_type != NULL) | |
14478 | { | |
14479 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
14480 | ||
14481 | /* Enlist this call site to the function. */ | |
14482 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
14483 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
14484 | } | |
14485 | else | |
14486 | complaint (&symfile_complaints, | |
216f72a1 | 14487 | _("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
14488 | "DIE %s [in module %s]"), |
14489 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14490 | } |
14491 | } | |
14492 | ||
216f72a1 JK |
14493 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
14494 | if (attr == NULL) | |
14495 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
14496 | if (attr == NULL) | |
14497 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 14498 | if (attr == NULL) |
216f72a1 JK |
14499 | { |
14500 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
14501 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14502 | } | |
96408a79 SA |
14503 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
14504 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
14505 | /* Keep NULL DWARF_BLOCK. */; | |
14506 | else if (attr_form_is_block (attr)) | |
14507 | { | |
14508 | struct dwarf2_locexpr_baton *dlbaton; | |
14509 | ||
8d749320 | 14510 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
14511 | dlbaton->data = DW_BLOCK (attr)->data; |
14512 | dlbaton->size = DW_BLOCK (attr)->size; | |
14513 | dlbaton->per_cu = cu->per_cu; | |
14514 | ||
14515 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
14516 | } | |
7771576e | 14517 | else if (attr_form_is_ref (attr)) |
96408a79 | 14518 | { |
96408a79 SA |
14519 | struct dwarf2_cu *target_cu = cu; |
14520 | struct die_info *target_die; | |
14521 | ||
ac9ec31b | 14522 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 14523 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
14524 | if (die_is_declaration (target_die, target_cu)) |
14525 | { | |
7d45c7c3 | 14526 | const char *target_physname; |
9112db09 JK |
14527 | |
14528 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 14529 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 14530 | if (target_physname == NULL) |
9112db09 | 14531 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 SA |
14532 | if (target_physname == NULL) |
14533 | complaint (&symfile_complaints, | |
216f72a1 | 14534 | _("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14535 | "physname, for referencing DIE %s [in module %s]"), |
14536 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14537 | else |
7d455152 | 14538 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
14539 | } |
14540 | else | |
14541 | { | |
14542 | CORE_ADDR lowpc; | |
14543 | ||
14544 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 14545 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 14546 | <= PC_BOUNDS_INVALID) |
96408a79 | 14547 | complaint (&symfile_complaints, |
216f72a1 | 14548 | _("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14549 | "low pc, for referencing DIE %s [in module %s]"), |
14550 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14551 | else |
3e29f34a MR |
14552 | { |
14553 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
14554 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
14555 | } | |
96408a79 SA |
14556 | } |
14557 | } | |
14558 | else | |
14559 | complaint (&symfile_complaints, | |
216f72a1 | 14560 | _("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
14561 | "block nor reference, for DIE %s [in module %s]"), |
14562 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14563 | |
14564 | call_site->per_cu = cu->per_cu; | |
14565 | ||
14566 | for (child_die = die->child; | |
14567 | child_die && child_die->tag; | |
14568 | child_die = sibling_die (child_die)) | |
14569 | { | |
96408a79 | 14570 | struct call_site_parameter *parameter; |
1788b2d3 | 14571 | struct attribute *loc, *origin; |
96408a79 | 14572 | |
216f72a1 JK |
14573 | if (child_die->tag != DW_TAG_call_site_parameter |
14574 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14575 | { |
14576 | /* Already printed the complaint above. */ | |
14577 | continue; | |
14578 | } | |
14579 | ||
14580 | gdb_assert (call_site->parameter_count < nparams); | |
14581 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14582 | ||
1788b2d3 JK |
14583 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14584 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14585 | register is contained in DW_AT_call_value. */ |
96408a79 | 14586 | |
24c5c679 | 14587 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14588 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14589 | if (origin == NULL) | |
14590 | { | |
14591 | /* This was a pre-DWARF-5 GNU extension alias | |
14592 | for DW_AT_call_parameter. */ | |
14593 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14594 | } | |
7771576e | 14595 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 | 14596 | { |
1788b2d3 | 14597 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 PA |
14598 | |
14599 | sect_offset sect_off | |
14600 | = (sect_offset) dwarf2_get_ref_die_offset (origin); | |
14601 | if (!offset_in_cu_p (&cu->header, sect_off)) | |
d76b7dbc JK |
14602 | { |
14603 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14604 | binding can be done only inside one CU. Such referenced DIE | |
14605 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
14606 | complaint (&symfile_complaints, | |
216f72a1 | 14607 | _("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14608 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14609 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14610 | objfile_name (objfile)); |
d76b7dbc JK |
14611 | continue; |
14612 | } | |
9c541725 PA |
14613 | parameter->u.param_cu_off |
14614 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 JK |
14615 | } |
14616 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
14617 | { |
14618 | complaint (&symfile_complaints, | |
14619 | _("No DW_FORM_block* DW_AT_location for " | |
9d8780f0 SM |
14620 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14621 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14622 | continue; |
14623 | } | |
24c5c679 | 14624 | else |
96408a79 | 14625 | { |
24c5c679 JK |
14626 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
14627 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
14628 | if (parameter->u.dwarf_reg != -1) | |
14629 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
14630 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
14631 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
14632 | ¶meter->u.fb_offset)) | |
14633 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14634 | else | |
14635 | { | |
14636 | complaint (&symfile_complaints, | |
14637 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
14638 | "for DW_FORM_block* DW_AT_location is supported for " | |
9d8780f0 | 14639 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14640 | "[in module %s]"), |
9d8780f0 | 14641 | sect_offset_str (child_die->sect_off), |
9c541725 | 14642 | objfile_name (objfile)); |
24c5c679 JK |
14643 | continue; |
14644 | } | |
96408a79 SA |
14645 | } |
14646 | ||
216f72a1 JK |
14647 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14648 | if (attr == NULL) | |
14649 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
96408a79 SA |
14650 | if (!attr_form_is_block (attr)) |
14651 | { | |
14652 | complaint (&symfile_complaints, | |
216f72a1 | 14653 | _("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14654 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14655 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14656 | objfile_name (objfile)); |
96408a79 SA |
14657 | continue; |
14658 | } | |
14659 | parameter->value = DW_BLOCK (attr)->data; | |
14660 | parameter->value_size = DW_BLOCK (attr)->size; | |
14661 | ||
14662 | /* Parameters are not pre-cleared by memset above. */ | |
14663 | parameter->data_value = NULL; | |
14664 | parameter->data_value_size = 0; | |
14665 | call_site->parameter_count++; | |
14666 | ||
216f72a1 JK |
14667 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14668 | if (attr == NULL) | |
14669 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
96408a79 SA |
14670 | if (attr) |
14671 | { | |
14672 | if (!attr_form_is_block (attr)) | |
14673 | complaint (&symfile_complaints, | |
216f72a1 | 14674 | _("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14675 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14676 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14677 | objfile_name (objfile)); |
96408a79 SA |
14678 | else |
14679 | { | |
14680 | parameter->data_value = DW_BLOCK (attr)->data; | |
14681 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
14682 | } | |
14683 | } | |
14684 | } | |
14685 | } | |
14686 | ||
71a3c369 TT |
14687 | /* Helper function for read_variable. If DIE represents a virtual |
14688 | table, then return the type of the concrete object that is | |
14689 | associated with the virtual table. Otherwise, return NULL. */ | |
14690 | ||
14691 | static struct type * | |
14692 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14693 | { | |
14694 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14695 | if (attr == NULL) | |
14696 | return NULL; | |
14697 | ||
14698 | /* Find the type DIE. */ | |
14699 | struct die_info *type_die = NULL; | |
14700 | struct dwarf2_cu *type_cu = cu; | |
14701 | ||
14702 | if (attr_form_is_ref (attr)) | |
14703 | type_die = follow_die_ref (die, attr, &type_cu); | |
14704 | if (type_die == NULL) | |
14705 | return NULL; | |
14706 | ||
14707 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14708 | return NULL; | |
14709 | return die_containing_type (type_die, type_cu); | |
14710 | } | |
14711 | ||
14712 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14713 | ||
14714 | static void | |
14715 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14716 | { | |
14717 | struct rust_vtable_symbol *storage = NULL; | |
14718 | ||
14719 | if (cu->language == language_rust) | |
14720 | { | |
14721 | struct type *containing_type = rust_containing_type (die, cu); | |
14722 | ||
14723 | if (containing_type != NULL) | |
14724 | { | |
518817b3 | 14725 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 TT |
14726 | |
14727 | storage = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
14728 | struct rust_vtable_symbol); | |
14729 | initialize_objfile_symbol (storage); | |
14730 | storage->concrete_type = containing_type; | |
cf724bc9 | 14731 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14732 | } |
14733 | } | |
14734 | ||
5e2db402 | 14735 | new_symbol (die, NULL, cu, storage); |
71a3c369 TT |
14736 | } |
14737 | ||
43988095 JK |
14738 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14739 | reading .debug_rnglists. | |
14740 | Callback's type should be: | |
14741 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14742 | Return true if the attributes are present and valid, otherwise, | |
14743 | return false. */ | |
14744 | ||
14745 | template <typename Callback> | |
14746 | static bool | |
14747 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
14748 | Callback &&callback) | |
14749 | { | |
ed2dc618 | 14750 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14751 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14752 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 14753 | bfd *obfd = objfile->obfd; |
43988095 JK |
14754 | /* Base address selection entry. */ |
14755 | CORE_ADDR base; | |
14756 | int found_base; | |
43988095 | 14757 | const gdb_byte *buffer; |
43988095 JK |
14758 | CORE_ADDR baseaddr; |
14759 | bool overflow = false; | |
14760 | ||
14761 | found_base = cu->base_known; | |
14762 | base = cu->base_address; | |
14763 | ||
14764 | dwarf2_read_section (objfile, &dwarf2_per_objfile->rnglists); | |
14765 | if (offset >= dwarf2_per_objfile->rnglists.size) | |
14766 | { | |
14767 | complaint (&symfile_complaints, | |
14768 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
14769 | offset); | |
14770 | return false; | |
14771 | } | |
14772 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
14773 | ||
14774 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14775 | ||
14776 | while (1) | |
14777 | { | |
7814882a JK |
14778 | /* Initialize it due to a false compiler warning. */ |
14779 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
14780 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
14781 | + dwarf2_per_objfile->rnglists.size); | |
14782 | unsigned int bytes_read; | |
14783 | ||
14784 | if (buffer == buf_end) | |
14785 | { | |
14786 | overflow = true; | |
14787 | break; | |
14788 | } | |
14789 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14790 | switch (rlet) | |
14791 | { | |
14792 | case DW_RLE_end_of_list: | |
14793 | break; | |
14794 | case DW_RLE_base_address: | |
14795 | if (buffer + cu->header.addr_size > buf_end) | |
14796 | { | |
14797 | overflow = true; | |
14798 | break; | |
14799 | } | |
14800 | base = read_address (obfd, buffer, cu, &bytes_read); | |
14801 | found_base = 1; | |
14802 | buffer += bytes_read; | |
14803 | break; | |
14804 | case DW_RLE_start_length: | |
14805 | if (buffer + cu->header.addr_size > buf_end) | |
14806 | { | |
14807 | overflow = true; | |
14808 | break; | |
14809 | } | |
14810 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14811 | buffer += bytes_read; | |
14812 | range_end = (range_beginning | |
14813 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14814 | buffer += bytes_read; | |
14815 | if (buffer > buf_end) | |
14816 | { | |
14817 | overflow = true; | |
14818 | break; | |
14819 | } | |
14820 | break; | |
14821 | case DW_RLE_offset_pair: | |
14822 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14823 | buffer += bytes_read; | |
14824 | if (buffer > buf_end) | |
14825 | { | |
14826 | overflow = true; | |
14827 | break; | |
14828 | } | |
14829 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14830 | buffer += bytes_read; | |
14831 | if (buffer > buf_end) | |
14832 | { | |
14833 | overflow = true; | |
14834 | break; | |
14835 | } | |
14836 | break; | |
14837 | case DW_RLE_start_end: | |
14838 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14839 | { | |
14840 | overflow = true; | |
14841 | break; | |
14842 | } | |
14843 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14844 | buffer += bytes_read; | |
14845 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
14846 | buffer += bytes_read; | |
14847 | break; | |
14848 | default: | |
14849 | complaint (&symfile_complaints, | |
14850 | _("Invalid .debug_rnglists data (no base address)")); | |
14851 | return false; | |
14852 | } | |
14853 | if (rlet == DW_RLE_end_of_list || overflow) | |
14854 | break; | |
14855 | if (rlet == DW_RLE_base_address) | |
14856 | continue; | |
14857 | ||
14858 | if (!found_base) | |
14859 | { | |
14860 | /* We have no valid base address for the ranges | |
14861 | data. */ | |
14862 | complaint (&symfile_complaints, | |
14863 | _("Invalid .debug_rnglists data (no base address)")); | |
14864 | return false; | |
14865 | } | |
14866 | ||
14867 | if (range_beginning > range_end) | |
14868 | { | |
14869 | /* Inverted range entries are invalid. */ | |
14870 | complaint (&symfile_complaints, | |
14871 | _("Invalid .debug_rnglists data (inverted range)")); | |
14872 | return false; | |
14873 | } | |
14874 | ||
14875 | /* Empty range entries have no effect. */ | |
14876 | if (range_beginning == range_end) | |
14877 | continue; | |
14878 | ||
14879 | range_beginning += base; | |
14880 | range_end += base; | |
14881 | ||
14882 | /* A not-uncommon case of bad debug info. | |
14883 | Don't pollute the addrmap with bad data. */ | |
14884 | if (range_beginning + baseaddr == 0 | |
14885 | && !dwarf2_per_objfile->has_section_at_zero) | |
14886 | { | |
14887 | complaint (&symfile_complaints, | |
14888 | _(".debug_rnglists entry has start address of zero" | |
14889 | " [in module %s]"), objfile_name (objfile)); | |
14890 | continue; | |
14891 | } | |
14892 | ||
14893 | callback (range_beginning, range_end); | |
14894 | } | |
14895 | ||
14896 | if (overflow) | |
14897 | { | |
14898 | complaint (&symfile_complaints, | |
14899 | _("Offset %d is not terminated " | |
14900 | "for DW_AT_ranges attribute"), | |
14901 | offset); | |
14902 | return false; | |
14903 | } | |
14904 | ||
14905 | return true; | |
14906 | } | |
14907 | ||
14908 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14909 | Callback's type should be: | |
14910 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14911 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14912 | |
43988095 | 14913 | template <typename Callback> |
43039443 | 14914 | static int |
5f46c5a5 | 14915 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 14916 | Callback &&callback) |
43039443 | 14917 | { |
ed2dc618 | 14918 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14919 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14920 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
14921 | struct comp_unit_head *cu_header = &cu->header; |
14922 | bfd *obfd = objfile->obfd; | |
14923 | unsigned int addr_size = cu_header->addr_size; | |
14924 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14925 | /* Base address selection entry. */ | |
14926 | CORE_ADDR base; | |
14927 | int found_base; | |
14928 | unsigned int dummy; | |
d521ce57 | 14929 | const gdb_byte *buffer; |
ff013f42 | 14930 | CORE_ADDR baseaddr; |
43039443 | 14931 | |
43988095 JK |
14932 | if (cu_header->version >= 5) |
14933 | return dwarf2_rnglists_process (offset, cu, callback); | |
14934 | ||
d00adf39 DE |
14935 | found_base = cu->base_known; |
14936 | base = cu->base_address; | |
43039443 | 14937 | |
be391dca | 14938 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 14939 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
14940 | { |
14941 | complaint (&symfile_complaints, | |
14942 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
14943 | offset); | |
14944 | return 0; | |
14945 | } | |
dce234bc | 14946 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 14947 | |
e7030f15 | 14948 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 14949 | |
43039443 JK |
14950 | while (1) |
14951 | { | |
14952 | CORE_ADDR range_beginning, range_end; | |
14953 | ||
14954 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
14955 | buffer += addr_size; | |
14956 | range_end = read_address (obfd, buffer, cu, &dummy); | |
14957 | buffer += addr_size; | |
14958 | offset += 2 * addr_size; | |
14959 | ||
14960 | /* An end of list marker is a pair of zero addresses. */ | |
14961 | if (range_beginning == 0 && range_end == 0) | |
14962 | /* Found the end of list entry. */ | |
14963 | break; | |
14964 | ||
14965 | /* Each base address selection entry is a pair of 2 values. | |
14966 | The first is the largest possible address, the second is | |
14967 | the base address. Check for a base address here. */ | |
14968 | if ((range_beginning & mask) == mask) | |
14969 | { | |
28d2bfb9 AB |
14970 | /* If we found the largest possible address, then we already |
14971 | have the base address in range_end. */ | |
14972 | base = range_end; | |
43039443 JK |
14973 | found_base = 1; |
14974 | continue; | |
14975 | } | |
14976 | ||
14977 | if (!found_base) | |
14978 | { | |
14979 | /* We have no valid base address for the ranges | |
14980 | data. */ | |
14981 | complaint (&symfile_complaints, | |
14982 | _("Invalid .debug_ranges data (no base address)")); | |
14983 | return 0; | |
14984 | } | |
14985 | ||
9277c30c UW |
14986 | if (range_beginning > range_end) |
14987 | { | |
14988 | /* Inverted range entries are invalid. */ | |
14989 | complaint (&symfile_complaints, | |
14990 | _("Invalid .debug_ranges data (inverted range)")); | |
14991 | return 0; | |
14992 | } | |
14993 | ||
14994 | /* Empty range entries have no effect. */ | |
14995 | if (range_beginning == range_end) | |
14996 | continue; | |
14997 | ||
43039443 JK |
14998 | range_beginning += base; |
14999 | range_end += base; | |
15000 | ||
01093045 DE |
15001 | /* A not-uncommon case of bad debug info. |
15002 | Don't pollute the addrmap with bad data. */ | |
15003 | if (range_beginning + baseaddr == 0 | |
15004 | && !dwarf2_per_objfile->has_section_at_zero) | |
15005 | { | |
15006 | complaint (&symfile_complaints, | |
15007 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 15008 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
15009 | continue; |
15010 | } | |
15011 | ||
5f46c5a5 JK |
15012 | callback (range_beginning, range_end); |
15013 | } | |
15014 | ||
15015 | return 1; | |
15016 | } | |
15017 | ||
15018 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
15019 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
15020 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
15021 | ||
15022 | static int | |
15023 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
15024 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
15025 | struct partial_symtab *ranges_pst) | |
15026 | { | |
518817b3 | 15027 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 JK |
15028 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
15029 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
15030 | SECT_OFF_TEXT (objfile)); | |
15031 | int low_set = 0; | |
15032 | CORE_ADDR low = 0; | |
15033 | CORE_ADDR high = 0; | |
15034 | int retval; | |
15035 | ||
15036 | retval = dwarf2_ranges_process (offset, cu, | |
15037 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
15038 | { | |
9277c30c | 15039 | if (ranges_pst != NULL) |
3e29f34a MR |
15040 | { |
15041 | CORE_ADDR lowpc; | |
15042 | CORE_ADDR highpc; | |
15043 | ||
15044 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
15045 | range_beginning + baseaddr); | |
15046 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
15047 | range_end + baseaddr); | |
15048 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
15049 | ranges_pst); | |
15050 | } | |
ff013f42 | 15051 | |
43039443 JK |
15052 | /* FIXME: This is recording everything as a low-high |
15053 | segment of consecutive addresses. We should have a | |
15054 | data structure for discontiguous block ranges | |
15055 | instead. */ | |
15056 | if (! low_set) | |
15057 | { | |
15058 | low = range_beginning; | |
15059 | high = range_end; | |
15060 | low_set = 1; | |
15061 | } | |
15062 | else | |
15063 | { | |
15064 | if (range_beginning < low) | |
15065 | low = range_beginning; | |
15066 | if (range_end > high) | |
15067 | high = range_end; | |
15068 | } | |
5f46c5a5 JK |
15069 | }); |
15070 | if (!retval) | |
15071 | return 0; | |
43039443 JK |
15072 | |
15073 | if (! low_set) | |
15074 | /* If the first entry is an end-of-list marker, the range | |
15075 | describes an empty scope, i.e. no instructions. */ | |
15076 | return 0; | |
15077 | ||
15078 | if (low_return) | |
15079 | *low_return = low; | |
15080 | if (high_return) | |
15081 | *high_return = high; | |
15082 | return 1; | |
15083 | } | |
15084 | ||
3a2b436a JK |
15085 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
15086 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 15087 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 15088 | |
3a2b436a | 15089 | static enum pc_bounds_kind |
af34e669 | 15090 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
15091 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
15092 | struct partial_symtab *pst) | |
c906108c | 15093 | { |
518817b3 SM |
15094 | struct dwarf2_per_objfile *dwarf2_per_objfile |
15095 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 15096 | struct attribute *attr; |
91da1414 | 15097 | struct attribute *attr_high; |
af34e669 DJ |
15098 | CORE_ADDR low = 0; |
15099 | CORE_ADDR high = 0; | |
e385593e | 15100 | enum pc_bounds_kind ret; |
c906108c | 15101 | |
91da1414 MW |
15102 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
15103 | if (attr_high) | |
af34e669 | 15104 | { |
e142c38c | 15105 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 15106 | if (attr) |
91da1414 | 15107 | { |
31aa7e4e JB |
15108 | low = attr_value_as_address (attr); |
15109 | high = attr_value_as_address (attr_high); | |
15110 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
15111 | high += low; | |
91da1414 | 15112 | } |
af34e669 DJ |
15113 | else |
15114 | /* Found high w/o low attribute. */ | |
e385593e | 15115 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
15116 | |
15117 | /* Found consecutive range of addresses. */ | |
3a2b436a | 15118 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 15119 | } |
c906108c | 15120 | else |
af34e669 | 15121 | { |
e142c38c | 15122 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
15123 | if (attr != NULL) |
15124 | { | |
ab435259 DE |
15125 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
15126 | We take advantage of the fact that DW_AT_ranges does not appear | |
15127 | in DW_TAG_compile_unit of DWO files. */ | |
15128 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
15129 | unsigned int ranges_offset = (DW_UNSND (attr) | |
15130 | + (need_ranges_base | |
15131 | ? cu->ranges_base | |
15132 | : 0)); | |
2e3cf129 | 15133 | |
af34e669 | 15134 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 15135 | .debug_ranges section. */ |
2e3cf129 | 15136 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 15137 | return PC_BOUNDS_INVALID; |
43039443 | 15138 | /* Found discontinuous range of addresses. */ |
3a2b436a | 15139 | ret = PC_BOUNDS_RANGES; |
af34e669 | 15140 | } |
e385593e JK |
15141 | else |
15142 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 15143 | } |
c906108c | 15144 | |
48fbe735 | 15145 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 15146 | if (high <= low) |
e385593e | 15147 | return PC_BOUNDS_INVALID; |
c906108c SS |
15148 | |
15149 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
15150 | eliminate duplicate copies of functions and vtables and such. | |
15151 | The linker will arbitrarily choose one and discard the others. | |
15152 | The AT_*_pc values for such functions refer to local labels in | |
15153 | these sections. If the section from that file was discarded, the | |
15154 | labels are not in the output, so the relocs get a value of 0. | |
15155 | If this is a discarded function, mark the pc bounds as invalid, | |
15156 | so that GDB will ignore it. */ | |
72dca2f5 | 15157 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 15158 | return PC_BOUNDS_INVALID; |
c906108c SS |
15159 | |
15160 | *lowpc = low; | |
96408a79 SA |
15161 | if (highpc) |
15162 | *highpc = high; | |
af34e669 | 15163 | return ret; |
c906108c SS |
15164 | } |
15165 | ||
b084d499 JB |
15166 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
15167 | its low and high PC addresses. Do nothing if these addresses could not | |
15168 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
15169 | and HIGHPC to the high address if greater than HIGHPC. */ | |
15170 | ||
15171 | static void | |
15172 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
15173 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
15174 | struct dwarf2_cu *cu) | |
15175 | { | |
15176 | CORE_ADDR low, high; | |
15177 | struct die_info *child = die->child; | |
15178 | ||
e385593e | 15179 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 15180 | { |
325fac50 PA |
15181 | *lowpc = std::min (*lowpc, low); |
15182 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
15183 | } |
15184 | ||
15185 | /* If the language does not allow nested subprograms (either inside | |
15186 | subprograms or lexical blocks), we're done. */ | |
15187 | if (cu->language != language_ada) | |
15188 | return; | |
6e70227d | 15189 | |
b084d499 JB |
15190 | /* Check all the children of the given DIE. If it contains nested |
15191 | subprograms, then check their pc bounds. Likewise, we need to | |
15192 | check lexical blocks as well, as they may also contain subprogram | |
15193 | definitions. */ | |
15194 | while (child && child->tag) | |
15195 | { | |
15196 | if (child->tag == DW_TAG_subprogram | |
15197 | || child->tag == DW_TAG_lexical_block) | |
15198 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
15199 | child = sibling_die (child); | |
15200 | } | |
15201 | } | |
15202 | ||
fae299cd DC |
15203 | /* Get the low and high pc's represented by the scope DIE, and store |
15204 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
15205 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
15206 | ||
15207 | static void | |
15208 | get_scope_pc_bounds (struct die_info *die, | |
15209 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
15210 | struct dwarf2_cu *cu) | |
15211 | { | |
15212 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
15213 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
15214 | CORE_ADDR current_low, current_high; | |
15215 | ||
3a2b436a | 15216 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 15217 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
15218 | { |
15219 | best_low = current_low; | |
15220 | best_high = current_high; | |
15221 | } | |
15222 | else | |
15223 | { | |
15224 | struct die_info *child = die->child; | |
15225 | ||
15226 | while (child && child->tag) | |
15227 | { | |
15228 | switch (child->tag) { | |
15229 | case DW_TAG_subprogram: | |
b084d499 | 15230 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
15231 | break; |
15232 | case DW_TAG_namespace: | |
f55ee35c | 15233 | case DW_TAG_module: |
fae299cd DC |
15234 | /* FIXME: carlton/2004-01-16: Should we do this for |
15235 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
15236 | that current GCC's always emit the DIEs corresponding | |
15237 | to definitions of methods of classes as children of a | |
15238 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
15239 | the DIEs giving the declarations, which could be | |
15240 | anywhere). But I don't see any reason why the | |
15241 | standards says that they have to be there. */ | |
15242 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
15243 | ||
15244 | if (current_low != ((CORE_ADDR) -1)) | |
15245 | { | |
325fac50 PA |
15246 | best_low = std::min (best_low, current_low); |
15247 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
15248 | } |
15249 | break; | |
15250 | default: | |
0963b4bd | 15251 | /* Ignore. */ |
fae299cd DC |
15252 | break; |
15253 | } | |
15254 | ||
15255 | child = sibling_die (child); | |
15256 | } | |
15257 | } | |
15258 | ||
15259 | *lowpc = best_low; | |
15260 | *highpc = best_high; | |
15261 | } | |
15262 | ||
801e3a5b JB |
15263 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
15264 | in DIE. */ | |
380bca97 | 15265 | |
801e3a5b JB |
15266 | static void |
15267 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
15268 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
15269 | { | |
518817b3 | 15270 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 15271 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 15272 | struct attribute *attr; |
91da1414 | 15273 | struct attribute *attr_high; |
801e3a5b | 15274 | |
91da1414 MW |
15275 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
15276 | if (attr_high) | |
801e3a5b | 15277 | { |
801e3a5b JB |
15278 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
15279 | if (attr) | |
15280 | { | |
31aa7e4e JB |
15281 | CORE_ADDR low = attr_value_as_address (attr); |
15282 | CORE_ADDR high = attr_value_as_address (attr_high); | |
15283 | ||
15284 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
15285 | high += low; | |
9a619af0 | 15286 | |
3e29f34a MR |
15287 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
15288 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
15289 | record_block_range (block, low, high - 1); | |
801e3a5b JB |
15290 | } |
15291 | } | |
15292 | ||
15293 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
15294 | if (attr) | |
15295 | { | |
ab435259 DE |
15296 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
15297 | We take advantage of the fact that DW_AT_ranges does not appear | |
15298 | in DW_TAG_compile_unit of DWO files. */ | |
15299 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
15300 | |
15301 | /* The value of the DW_AT_ranges attribute is the offset of the | |
15302 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
15303 | unsigned long offset = (DW_UNSND (attr) |
15304 | + (need_ranges_base ? cu->ranges_base : 0)); | |
d62bfeaf | 15305 | const gdb_byte *buffer; |
801e3a5b JB |
15306 | |
15307 | /* For some target architectures, but not others, the | |
15308 | read_address function sign-extends the addresses it returns. | |
15309 | To recognize base address selection entries, we need a | |
15310 | mask. */ | |
15311 | unsigned int addr_size = cu->header.addr_size; | |
15312 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
15313 | ||
15314 | /* The base address, to which the next pair is relative. Note | |
15315 | that this 'base' is a DWARF concept: most entries in a range | |
15316 | list are relative, to reduce the number of relocs against the | |
15317 | debugging information. This is separate from this function's | |
15318 | 'baseaddr' argument, which GDB uses to relocate debugging | |
15319 | information from a shared library based on the address at | |
15320 | which the library was loaded. */ | |
d00adf39 DE |
15321 | CORE_ADDR base = cu->base_address; |
15322 | int base_known = cu->base_known; | |
801e3a5b | 15323 | |
5f46c5a5 JK |
15324 | dwarf2_ranges_process (offset, cu, |
15325 | [&] (CORE_ADDR start, CORE_ADDR end) | |
15326 | { | |
58fdfd2c JK |
15327 | start += baseaddr; |
15328 | end += baseaddr; | |
5f46c5a5 JK |
15329 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
15330 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
15331 | record_block_range (block, start, end - 1); | |
15332 | }); | |
801e3a5b JB |
15333 | } |
15334 | } | |
15335 | ||
685b1105 JK |
15336 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
15337 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 15338 | |
685b1105 JK |
15339 | static void |
15340 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 15341 | { |
38360086 | 15342 | int major, minor; |
60d5a603 JK |
15343 | |
15344 | if (cu->producer == NULL) | |
15345 | { | |
15346 | /* For unknown compilers expect their behavior is DWARF version | |
15347 | compliant. | |
15348 | ||
15349 | GCC started to support .debug_types sections by -gdwarf-4 since | |
15350 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
15351 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
15352 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
15353 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 15354 | } |
b1ffba5a | 15355 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 15356 | { |
38360086 MW |
15357 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
15358 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 15359 | } |
5230b05a WT |
15360 | else if (producer_is_icc (cu->producer, &major, &minor)) |
15361 | cu->producer_is_icc_lt_14 = major < 14; | |
685b1105 JK |
15362 | else |
15363 | { | |
15364 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
15365 | compliant. */ | |
60d5a603 JK |
15366 | } |
15367 | ||
ba919b58 | 15368 | cu->checked_producer = 1; |
685b1105 | 15369 | } |
ba919b58 | 15370 | |
685b1105 JK |
15371 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
15372 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
15373 | during 4.6.0 experimental. */ | |
15374 | ||
15375 | static int | |
15376 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
15377 | { | |
15378 | if (!cu->checked_producer) | |
15379 | check_producer (cu); | |
15380 | ||
15381 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
15382 | } |
15383 | ||
15384 | /* Return the default accessibility type if it is not overriden by | |
15385 | DW_AT_accessibility. */ | |
15386 | ||
15387 | static enum dwarf_access_attribute | |
15388 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
15389 | { | |
15390 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
15391 | { | |
15392 | /* The default DWARF 2 accessibility for members is public, the default | |
15393 | accessibility for inheritance is private. */ | |
15394 | ||
15395 | if (die->tag != DW_TAG_inheritance) | |
15396 | return DW_ACCESS_public; | |
15397 | else | |
15398 | return DW_ACCESS_private; | |
15399 | } | |
15400 | else | |
15401 | { | |
15402 | /* DWARF 3+ defines the default accessibility a different way. The same | |
15403 | rules apply now for DW_TAG_inheritance as for the members and it only | |
15404 | depends on the container kind. */ | |
15405 | ||
15406 | if (die->parent->tag == DW_TAG_class_type) | |
15407 | return DW_ACCESS_private; | |
15408 | else | |
15409 | return DW_ACCESS_public; | |
15410 | } | |
15411 | } | |
15412 | ||
74ac6d43 TT |
15413 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
15414 | offset. If the attribute was not found return 0, otherwise return | |
15415 | 1. If it was found but could not properly be handled, set *OFFSET | |
15416 | to 0. */ | |
15417 | ||
15418 | static int | |
15419 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
15420 | LONGEST *offset) | |
15421 | { | |
15422 | struct attribute *attr; | |
15423 | ||
15424 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
15425 | if (attr != NULL) | |
15426 | { | |
15427 | *offset = 0; | |
15428 | ||
15429 | /* Note that we do not check for a section offset first here. | |
15430 | This is because DW_AT_data_member_location is new in DWARF 4, | |
15431 | so if we see it, we can assume that a constant form is really | |
15432 | a constant and not a section offset. */ | |
15433 | if (attr_form_is_constant (attr)) | |
15434 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
15435 | else if (attr_form_is_section_offset (attr)) | |
15436 | dwarf2_complex_location_expr_complaint (); | |
15437 | else if (attr_form_is_block (attr)) | |
15438 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
15439 | else | |
15440 | dwarf2_complex_location_expr_complaint (); | |
15441 | ||
15442 | return 1; | |
15443 | } | |
15444 | ||
15445 | return 0; | |
15446 | } | |
15447 | ||
c906108c SS |
15448 | /* Add an aggregate field to the field list. */ |
15449 | ||
15450 | static void | |
107d2387 | 15451 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15452 | struct dwarf2_cu *cu) |
6e70227d | 15453 | { |
518817b3 | 15454 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 15455 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
15456 | struct nextfield *new_field; |
15457 | struct attribute *attr; | |
15458 | struct field *fp; | |
15d034d0 | 15459 | const char *fieldname = ""; |
c906108c | 15460 | |
7d0ccb61 DJ |
15461 | if (die->tag == DW_TAG_inheritance) |
15462 | { | |
be2daae6 TT |
15463 | fip->baseclasses.emplace_back (); |
15464 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
15465 | } |
15466 | else | |
15467 | { | |
be2daae6 TT |
15468 | fip->fields.emplace_back (); |
15469 | new_field = &fip->fields.back (); | |
7d0ccb61 | 15470 | } |
be2daae6 | 15471 | |
c906108c SS |
15472 | fip->nfields++; |
15473 | ||
e142c38c | 15474 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
15475 | if (attr) |
15476 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
15477 | else |
15478 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
15479 | if (new_field->accessibility != DW_ACCESS_public) |
15480 | fip->non_public_fields = 1; | |
60d5a603 | 15481 | |
e142c38c | 15482 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
15483 | if (attr) |
15484 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
15485 | else |
15486 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15487 | |
15488 | fp = &new_field->field; | |
a9a9bd0f | 15489 | |
e142c38c | 15490 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15491 | { |
74ac6d43 TT |
15492 | LONGEST offset; |
15493 | ||
a9a9bd0f | 15494 | /* Data member other than a C++ static data member. */ |
6e70227d | 15495 | |
c906108c | 15496 | /* Get type of field. */ |
e7c27a73 | 15497 | fp->type = die_type (die, cu); |
c906108c | 15498 | |
d6a843b5 | 15499 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15500 | |
c906108c | 15501 | /* Get bit size of field (zero if none). */ |
e142c38c | 15502 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
15503 | if (attr) |
15504 | { | |
15505 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
15506 | } | |
15507 | else | |
15508 | { | |
15509 | FIELD_BITSIZE (*fp) = 0; | |
15510 | } | |
15511 | ||
15512 | /* Get bit offset of field. */ | |
74ac6d43 TT |
15513 | if (handle_data_member_location (die, cu, &offset)) |
15514 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 15515 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
15516 | if (attr) |
15517 | { | |
5e2b427d | 15518 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
15519 | { |
15520 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
15521 | additional bit offset from the MSB of the containing |
15522 | anonymous object to the MSB of the field. We don't | |
15523 | have to do anything special since we don't need to | |
15524 | know the size of the anonymous object. */ | |
f41f5e61 | 15525 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
15526 | } |
15527 | else | |
15528 | { | |
15529 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
15530 | MSB of the anonymous object, subtract off the number of |
15531 | bits from the MSB of the field to the MSB of the | |
15532 | object, and then subtract off the number of bits of | |
15533 | the field itself. The result is the bit offset of | |
15534 | the LSB of the field. */ | |
c906108c SS |
15535 | int anonymous_size; |
15536 | int bit_offset = DW_UNSND (attr); | |
15537 | ||
e142c38c | 15538 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15539 | if (attr) |
15540 | { | |
15541 | /* The size of the anonymous object containing | |
15542 | the bit field is explicit, so use the | |
15543 | indicated size (in bytes). */ | |
15544 | anonymous_size = DW_UNSND (attr); | |
15545 | } | |
15546 | else | |
15547 | { | |
15548 | /* The size of the anonymous object containing | |
15549 | the bit field must be inferred from the type | |
15550 | attribute of the data member containing the | |
15551 | bit field. */ | |
15552 | anonymous_size = TYPE_LENGTH (fp->type); | |
15553 | } | |
f41f5e61 PA |
15554 | SET_FIELD_BITPOS (*fp, |
15555 | (FIELD_BITPOS (*fp) | |
15556 | + anonymous_size * bits_per_byte | |
15557 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15558 | } |
15559 | } | |
da5b30da AA |
15560 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15561 | if (attr != NULL) | |
15562 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
15563 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
15564 | |
15565 | /* Get name of field. */ | |
39cbfefa DJ |
15566 | fieldname = dwarf2_name (die, cu); |
15567 | if (fieldname == NULL) | |
15568 | fieldname = ""; | |
d8151005 DJ |
15569 | |
15570 | /* The name is already allocated along with this objfile, so we don't | |
15571 | need to duplicate it for the type. */ | |
15572 | fp->name = fieldname; | |
c906108c SS |
15573 | |
15574 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 15575 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15576 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15577 | { |
d48cc9dd | 15578 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
15579 | new_field->accessibility = DW_ACCESS_private; |
15580 | fip->non_public_fields = 1; | |
15581 | } | |
15582 | } | |
a9a9bd0f | 15583 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15584 | { |
a9a9bd0f DC |
15585 | /* C++ static member. */ |
15586 | ||
15587 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15588 | is a declaration, but all versions of G++ as of this writing | |
15589 | (so through at least 3.2.1) incorrectly generate | |
15590 | DW_TAG_variable tags. */ | |
6e70227d | 15591 | |
ff355380 | 15592 | const char *physname; |
c906108c | 15593 | |
a9a9bd0f | 15594 | /* Get name of field. */ |
39cbfefa DJ |
15595 | fieldname = dwarf2_name (die, cu); |
15596 | if (fieldname == NULL) | |
c906108c SS |
15597 | return; |
15598 | ||
254e6b9e | 15599 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15600 | if (attr |
15601 | /* Only create a symbol if this is an external value. | |
15602 | new_symbol checks this and puts the value in the global symbol | |
15603 | table, which we want. If it is not external, new_symbol | |
15604 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15605 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15606 | { |
15607 | /* A static const member, not much different than an enum as far as | |
15608 | we're concerned, except that we can support more types. */ | |
15609 | new_symbol (die, NULL, cu); | |
15610 | } | |
15611 | ||
2df3850c | 15612 | /* Get physical name. */ |
ff355380 | 15613 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15614 | |
d8151005 DJ |
15615 | /* The name is already allocated along with this objfile, so we don't |
15616 | need to duplicate it for the type. */ | |
15617 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 15618 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 15619 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15620 | } |
15621 | else if (die->tag == DW_TAG_inheritance) | |
15622 | { | |
74ac6d43 | 15623 | LONGEST offset; |
d4b96c9a | 15624 | |
74ac6d43 TT |
15625 | /* C++ base class field. */ |
15626 | if (handle_data_member_location (die, cu, &offset)) | |
15627 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 15628 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 15629 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c | 15630 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
c906108c | 15631 | } |
2ddeaf8a TT |
15632 | else if (die->tag == DW_TAG_variant_part) |
15633 | { | |
15634 | /* process_structure_scope will treat this DIE as a union. */ | |
15635 | process_structure_scope (die, cu); | |
15636 | ||
15637 | /* The variant part is relative to the start of the enclosing | |
15638 | structure. */ | |
15639 | SET_FIELD_BITPOS (*fp, 0); | |
15640 | fp->type = get_die_type (die, cu); | |
15641 | fp->artificial = 1; | |
15642 | fp->name = "<<variant>>"; | |
15643 | } | |
15644 | else | |
15645 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15646 | } |
15647 | ||
883fd55a KS |
15648 | /* Can the type given by DIE define another type? */ |
15649 | ||
15650 | static bool | |
15651 | type_can_define_types (const struct die_info *die) | |
15652 | { | |
15653 | switch (die->tag) | |
15654 | { | |
15655 | case DW_TAG_typedef: | |
15656 | case DW_TAG_class_type: | |
15657 | case DW_TAG_structure_type: | |
15658 | case DW_TAG_union_type: | |
15659 | case DW_TAG_enumeration_type: | |
15660 | return true; | |
15661 | ||
15662 | default: | |
15663 | return false; | |
15664 | } | |
15665 | } | |
15666 | ||
15667 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15668 | |
15669 | static void | |
883fd55a KS |
15670 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15671 | struct dwarf2_cu *cu) | |
6e70227d | 15672 | { |
be2daae6 TT |
15673 | struct decl_field fp; |
15674 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15675 | |
883fd55a | 15676 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15677 | |
883fd55a | 15678 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15679 | fp.name = dwarf2_name (die, cu); |
15680 | fp.type = read_type_die (die, cu); | |
98751a41 | 15681 | |
c191a687 KS |
15682 | /* Save accessibility. */ |
15683 | enum dwarf_access_attribute accessibility; | |
15684 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
15685 | if (attr != NULL) | |
15686 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
15687 | else | |
15688 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15689 | switch (accessibility) | |
15690 | { | |
15691 | case DW_ACCESS_public: | |
15692 | /* The assumed value if neither private nor protected. */ | |
15693 | break; | |
15694 | case DW_ACCESS_private: | |
be2daae6 | 15695 | fp.is_private = 1; |
c191a687 KS |
15696 | break; |
15697 | case DW_ACCESS_protected: | |
be2daae6 | 15698 | fp.is_protected = 1; |
c191a687 KS |
15699 | break; |
15700 | default: | |
37534686 KS |
15701 | complaint (&symfile_complaints, |
15702 | _("Unhandled DW_AT_accessibility value (%x)"), accessibility); | |
c191a687 KS |
15703 | } |
15704 | ||
883fd55a | 15705 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15706 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15707 | else |
be2daae6 | 15708 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15709 | } |
15710 | ||
c906108c SS |
15711 | /* Create the vector of fields, and attach it to the type. */ |
15712 | ||
15713 | static void | |
fba45db2 | 15714 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15715 | struct dwarf2_cu *cu) |
c906108c SS |
15716 | { |
15717 | int nfields = fip->nfields; | |
15718 | ||
15719 | /* Record the field count, allocate space for the array of fields, | |
15720 | and create blank accessibility bitfields if necessary. */ | |
15721 | TYPE_NFIELDS (type) = nfields; | |
15722 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 15723 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 15724 | |
b4ba55a1 | 15725 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15726 | { |
15727 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15728 | ||
15729 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15730 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15731 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15732 | ||
15733 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15734 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15735 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15736 | ||
774b6a14 TT |
15737 | TYPE_FIELD_IGNORE_BITS (type) = |
15738 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15739 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15740 | } |
15741 | ||
15742 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15743 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15744 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15745 | { |
be2daae6 | 15746 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15747 | unsigned char *pointer; |
c906108c SS |
15748 | |
15749 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15750 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15751 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15752 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15753 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15754 | } |
15755 | ||
2ddeaf8a TT |
15756 | if (TYPE_FLAG_DISCRIMINATED_UNION (type)) |
15757 | { | |
15758 | struct discriminant_info *di = alloc_discriminant_info (type, -1, -1); | |
15759 | ||
be2daae6 | 15760 | for (int index = 0; index < nfields; ++index) |
2ddeaf8a | 15761 | { |
be2daae6 TT |
15762 | struct nextfield &field = fip->fields[index]; |
15763 | ||
15764 | if (field.variant.is_discriminant) | |
2ddeaf8a | 15765 | di->discriminant_index = index; |
be2daae6 | 15766 | else if (field.variant.default_branch) |
2ddeaf8a TT |
15767 | di->default_index = index; |
15768 | else | |
be2daae6 | 15769 | di->discriminants[index] = field.variant.discriminant_value; |
2ddeaf8a TT |
15770 | } |
15771 | } | |
15772 | ||
be2daae6 TT |
15773 | /* Copy the saved-up fields into the field vector. */ |
15774 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15775 | { |
be2daae6 TT |
15776 | struct nextfield &field |
15777 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15778 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15779 | |
be2daae6 TT |
15780 | TYPE_FIELD (type, i) = field.field; |
15781 | switch (field.accessibility) | |
c906108c | 15782 | { |
c5aa993b | 15783 | case DW_ACCESS_private: |
b4ba55a1 | 15784 | if (cu->language != language_ada) |
be2daae6 | 15785 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15786 | break; |
c906108c | 15787 | |
c5aa993b | 15788 | case DW_ACCESS_protected: |
b4ba55a1 | 15789 | if (cu->language != language_ada) |
be2daae6 | 15790 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15791 | break; |
c906108c | 15792 | |
c5aa993b JM |
15793 | case DW_ACCESS_public: |
15794 | break; | |
c906108c | 15795 | |
c5aa993b JM |
15796 | default: |
15797 | /* Unknown accessibility. Complain and treat it as public. */ | |
15798 | { | |
e2e0b3e5 | 15799 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
be2daae6 | 15800 | field.accessibility); |
c5aa993b JM |
15801 | } |
15802 | break; | |
c906108c | 15803 | } |
be2daae6 | 15804 | if (i < fip->baseclasses.size ()) |
c906108c | 15805 | { |
be2daae6 | 15806 | switch (field.virtuality) |
c906108c | 15807 | { |
c5aa993b JM |
15808 | case DW_VIRTUALITY_virtual: |
15809 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15810 | if (cu->language == language_ada) |
a73c6dcd | 15811 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15812 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15813 | break; |
c906108c SS |
15814 | } |
15815 | } | |
c906108c SS |
15816 | } |
15817 | } | |
15818 | ||
7d27a96d TT |
15819 | /* Return true if this member function is a constructor, false |
15820 | otherwise. */ | |
15821 | ||
15822 | static int | |
15823 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15824 | { | |
15825 | const char *fieldname; | |
fe978cb0 | 15826 | const char *type_name; |
7d27a96d TT |
15827 | int len; |
15828 | ||
15829 | if (die->parent == NULL) | |
15830 | return 0; | |
15831 | ||
15832 | if (die->parent->tag != DW_TAG_structure_type | |
15833 | && die->parent->tag != DW_TAG_union_type | |
15834 | && die->parent->tag != DW_TAG_class_type) | |
15835 | return 0; | |
15836 | ||
15837 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15838 | type_name = dwarf2_name (die->parent, cu); |
15839 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15840 | return 0; |
15841 | ||
15842 | len = strlen (fieldname); | |
fe978cb0 PA |
15843 | return (strncmp (fieldname, type_name, len) == 0 |
15844 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15845 | } |
15846 | ||
c906108c SS |
15847 | /* Add a member function to the proper fieldlist. */ |
15848 | ||
15849 | static void | |
107d2387 | 15850 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15851 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15852 | { |
518817b3 | 15853 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15854 | struct attribute *attr; |
c906108c | 15855 | int i; |
be2daae6 | 15856 | struct fnfieldlist *flp = nullptr; |
c906108c | 15857 | struct fn_field *fnp; |
15d034d0 | 15858 | const char *fieldname; |
f792889a | 15859 | struct type *this_type; |
60d5a603 | 15860 | enum dwarf_access_attribute accessibility; |
c906108c | 15861 | |
b4ba55a1 | 15862 | if (cu->language == language_ada) |
a73c6dcd | 15863 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15864 | |
2df3850c | 15865 | /* Get name of member function. */ |
39cbfefa DJ |
15866 | fieldname = dwarf2_name (die, cu); |
15867 | if (fieldname == NULL) | |
2df3850c | 15868 | return; |
c906108c | 15869 | |
c906108c | 15870 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15871 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15872 | { |
27bfe10e | 15873 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15874 | { |
15875 | flp = &fip->fnfieldlists[i]; | |
15876 | break; | |
15877 | } | |
c906108c SS |
15878 | } |
15879 | ||
be2daae6 TT |
15880 | /* Create a new fnfieldlist if necessary. */ |
15881 | if (flp == nullptr) | |
c906108c | 15882 | { |
be2daae6 TT |
15883 | fip->fnfieldlists.emplace_back (); |
15884 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15885 | flp->name = fieldname; |
be2daae6 | 15886 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15887 | } |
15888 | ||
be2daae6 TT |
15889 | /* Create a new member function field and add it to the vector of |
15890 | fnfieldlists. */ | |
15891 | flp->fnfields.emplace_back (); | |
15892 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15893 | |
15894 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15895 | if (cu->language == language_cplus) |
be2daae6 TT |
15896 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15897 | die, cu); | |
3da10d80 KS |
15898 | else |
15899 | { | |
1d06ead6 | 15900 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15901 | fnp->physname = physname ? physname : ""; |
15902 | } | |
15903 | ||
c906108c | 15904 | fnp->type = alloc_type (objfile); |
f792889a DJ |
15905 | this_type = read_type_die (die, cu); |
15906 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 15907 | { |
f792889a | 15908 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 15909 | |
f792889a | 15910 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15911 | of the method itself (TYPE_CODE_METHOD). */ |
15912 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
15913 | TYPE_TARGET_TYPE (this_type), |
15914 | TYPE_FIELDS (this_type), | |
15915 | TYPE_NFIELDS (this_type), | |
15916 | TYPE_VARARGS (this_type)); | |
c906108c SS |
15917 | |
15918 | /* Handle static member functions. | |
c5aa993b | 15919 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15920 | member functions. G++ helps GDB by marking the first |
15921 | parameter for non-static member functions (which is the this | |
15922 | pointer) as artificial. We obtain this information from | |
15923 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15924 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15925 | fnp->voffset = VOFFSET_STATIC; |
15926 | } | |
15927 | else | |
e2e0b3e5 | 15928 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 15929 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15930 | |
15931 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15932 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15933 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15934 | |
3e43a32a MS |
15935 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15936 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15937 | |
15938 | /* Get accessibility. */ | |
e142c38c | 15939 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 15940 | if (attr) |
aead7601 | 15941 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15942 | else |
15943 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15944 | switch (accessibility) | |
c906108c | 15945 | { |
60d5a603 JK |
15946 | case DW_ACCESS_private: |
15947 | fnp->is_private = 1; | |
15948 | break; | |
15949 | case DW_ACCESS_protected: | |
15950 | fnp->is_protected = 1; | |
15951 | break; | |
c906108c SS |
15952 | } |
15953 | ||
b02dede2 | 15954 | /* Check for artificial methods. */ |
e142c38c | 15955 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15956 | if (attr && DW_UNSND (attr) != 0) |
15957 | fnp->is_artificial = 1; | |
15958 | ||
7d27a96d TT |
15959 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15960 | ||
0d564a31 | 15961 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15962 | function. For older versions of GCC, this is an offset in the |
15963 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15964 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15965 | to the object address. */ |
15966 | ||
e142c38c | 15967 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 15968 | if (attr) |
8e19ed76 | 15969 | { |
aec5aa8b | 15970 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15971 | { |
aec5aa8b TT |
15972 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15973 | { | |
15974 | /* Old-style GCC. */ | |
15975 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15976 | } | |
15977 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15978 | || (DW_BLOCK (attr)->size > 1 | |
15979 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15980 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15981 | { | |
aec5aa8b TT |
15982 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15983 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15984 | dwarf2_complex_location_expr_complaint (); | |
15985 | else | |
15986 | fnp->voffset /= cu->header.addr_size; | |
15987 | fnp->voffset += 2; | |
15988 | } | |
15989 | else | |
15990 | dwarf2_complex_location_expr_complaint (); | |
15991 | ||
15992 | if (!fnp->fcontext) | |
7e993ebf KS |
15993 | { |
15994 | /* If there is no `this' field and no DW_AT_containing_type, | |
15995 | we cannot actually find a base class context for the | |
15996 | vtable! */ | |
15997 | if (TYPE_NFIELDS (this_type) == 0 | |
15998 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
15999 | { | |
16000 | complaint (&symfile_complaints, | |
16001 | _("cannot determine context for virtual member " | |
9d8780f0 SM |
16002 | "function \"%s\" (offset %s)"), |
16003 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
16004 | } |
16005 | else | |
16006 | { | |
16007 | fnp->fcontext | |
16008 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
16009 | } | |
16010 | } | |
aec5aa8b | 16011 | } |
3690dd37 | 16012 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 16013 | { |
4d3c2250 | 16014 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
16015 | } |
16016 | else | |
16017 | { | |
4d3c2250 KB |
16018 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
16019 | fieldname); | |
8e19ed76 | 16020 | } |
0d564a31 | 16021 | } |
d48cc9dd DJ |
16022 | else |
16023 | { | |
16024 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
16025 | if (attr && DW_UNSND (attr)) | |
16026 | { | |
16027 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
16028 | complaint (&symfile_complaints, | |
9d8780f0 | 16029 | _("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 16030 | "but the vtable offset is not specified"), |
9d8780f0 | 16031 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 16032 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
16033 | TYPE_CPLUS_DYNAMIC (type) = 1; |
16034 | } | |
16035 | } | |
c906108c SS |
16036 | } |
16037 | ||
16038 | /* Create the vector of member function fields, and attach it to the type. */ | |
16039 | ||
16040 | static void | |
fba45db2 | 16041 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 16042 | struct dwarf2_cu *cu) |
c906108c | 16043 | { |
b4ba55a1 | 16044 | if (cu->language == language_ada) |
a73c6dcd | 16045 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 16046 | |
c906108c SS |
16047 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
16048 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
16049 | TYPE_ALLOC (type, |
16050 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 16051 | |
be2daae6 | 16052 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 16053 | { |
be2daae6 | 16054 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 16055 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 16056 | |
be2daae6 TT |
16057 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
16058 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 16059 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
16060 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
16061 | ||
16062 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
16063 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
16064 | } |
16065 | ||
be2daae6 | 16066 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
16067 | } |
16068 | ||
1168df01 JB |
16069 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
16070 | language, zero otherwise. */ | |
16071 | static int | |
16072 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
16073 | { | |
16074 | static const char vptr[] = "_vptr"; | |
16075 | ||
9c37b5ae TT |
16076 | /* Look for the C++ form of the vtable. */ |
16077 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
16078 | return 1; |
16079 | ||
16080 | return 0; | |
16081 | } | |
16082 | ||
c0dd20ea | 16083 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
16084 | functions, with the ABI-specified layout. If TYPE describes |
16085 | such a structure, smash it into a member function type. | |
61049d3b DJ |
16086 | |
16087 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
16088 | This is GCC PR debug/28767. */ | |
c0dd20ea | 16089 | |
0b92b5bb TT |
16090 | static void |
16091 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 16092 | { |
09e2d7c7 | 16093 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
16094 | |
16095 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
16096 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
16097 | return; | |
c0dd20ea DJ |
16098 | |
16099 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
16100 | if (TYPE_FIELD_NAME (type, 0) == NULL |
16101 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
16102 | || TYPE_FIELD_NAME (type, 1) == NULL | |
16103 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
16104 | return; | |
c0dd20ea DJ |
16105 | |
16106 | /* Find the type of the method. */ | |
0b92b5bb | 16107 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
16108 | if (pfn_type == NULL |
16109 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
16110 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 16111 | return; |
c0dd20ea DJ |
16112 | |
16113 | /* Look for the "this" argument. */ | |
16114 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
16115 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 16116 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 16117 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 16118 | return; |
c0dd20ea | 16119 | |
09e2d7c7 | 16120 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 16121 | new_type = alloc_type (objfile); |
09e2d7c7 | 16122 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
16123 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
16124 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 16125 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 16126 | } |
1168df01 | 16127 | |
685b1105 | 16128 | |
c906108c | 16129 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
16130 | (definition) to create a type for the structure or union. Fill in |
16131 | the type's name and general properties; the members will not be | |
83655187 DE |
16132 | processed until process_structure_scope. A symbol table entry for |
16133 | the type will also not be done until process_structure_scope (assuming | |
16134 | the type has a name). | |
c906108c | 16135 | |
c767944b DJ |
16136 | NOTE: we need to call these functions regardless of whether or not the |
16137 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 16138 | structure or union. This gets the type entered into our set of |
83655187 | 16139 | user defined types. */ |
c906108c | 16140 | |
f792889a | 16141 | static struct type * |
134d01f1 | 16142 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16143 | { |
518817b3 | 16144 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
16145 | struct type *type; |
16146 | struct attribute *attr; | |
15d034d0 | 16147 | const char *name; |
c906108c | 16148 | |
348e048f DE |
16149 | /* If the definition of this type lives in .debug_types, read that type. |
16150 | Don't follow DW_AT_specification though, that will take us back up | |
16151 | the chain and we want to go down. */ | |
45e58e77 | 16152 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
16153 | if (attr) |
16154 | { | |
ac9ec31b | 16155 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16156 | |
ac9ec31b | 16157 | /* The type's CU may not be the same as CU. |
02142a6c | 16158 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16159 | return set_die_type (die, type, cu); |
16160 | } | |
16161 | ||
c0dd20ea | 16162 | type = alloc_type (objfile); |
c906108c | 16163 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 16164 | |
39cbfefa DJ |
16165 | name = dwarf2_name (die, cu); |
16166 | if (name != NULL) | |
c906108c | 16167 | { |
987504bb | 16168 | if (cu->language == language_cplus |
c44af4eb TT |
16169 | || cu->language == language_d |
16170 | || cu->language == language_rust) | |
63d06c5c | 16171 | { |
15d034d0 | 16172 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
16173 | |
16174 | /* dwarf2_full_name might have already finished building the DIE's | |
16175 | type. If so, there is no need to continue. */ | |
16176 | if (get_die_type (die, cu) != NULL) | |
16177 | return get_die_type (die, cu); | |
16178 | ||
16179 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
16180 | if (die->tag == DW_TAG_structure_type |
16181 | || die->tag == DW_TAG_class_type) | |
16182 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
16183 | } |
16184 | else | |
16185 | { | |
d8151005 DJ |
16186 | /* The name is already allocated along with this objfile, so |
16187 | we don't need to duplicate it for the type. */ | |
7d455152 | 16188 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
16189 | if (die->tag == DW_TAG_class_type) |
16190 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 16191 | } |
c906108c SS |
16192 | } |
16193 | ||
16194 | if (die->tag == DW_TAG_structure_type) | |
16195 | { | |
16196 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
16197 | } | |
16198 | else if (die->tag == DW_TAG_union_type) | |
16199 | { | |
16200 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
16201 | } | |
2ddeaf8a TT |
16202 | else if (die->tag == DW_TAG_variant_part) |
16203 | { | |
16204 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
16205 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
16206 | } | |
c906108c SS |
16207 | else |
16208 | { | |
4753d33b | 16209 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
16210 | } |
16211 | ||
0cc2414c TT |
16212 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
16213 | TYPE_DECLARED_CLASS (type) = 1; | |
16214 | ||
e142c38c | 16215 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
16216 | if (attr) |
16217 | { | |
155bfbd3 JB |
16218 | if (attr_form_is_constant (attr)) |
16219 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16220 | else | |
16221 | { | |
16222 | /* For the moment, dynamic type sizes are not supported | |
16223 | by GDB's struct type. The actual size is determined | |
16224 | on-demand when resolving the type of a given object, | |
16225 | so set the type's length to zero for now. Otherwise, | |
16226 | we record an expression as the length, and that expression | |
16227 | could lead to a very large value, which could eventually | |
16228 | lead to us trying to allocate that much memory when creating | |
16229 | a value of that type. */ | |
16230 | TYPE_LENGTH (type) = 0; | |
16231 | } | |
c906108c SS |
16232 | } |
16233 | else | |
16234 | { | |
16235 | TYPE_LENGTH (type) = 0; | |
16236 | } | |
16237 | ||
5230b05a | 16238 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 16239 | { |
5230b05a WT |
16240 | /* ICC<14 does not output the required DW_AT_declaration on |
16241 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 16242 | TYPE_STUB (type) = 1; |
685b1105 JK |
16243 | } |
16244 | else | |
16245 | TYPE_STUB_SUPPORTED (type) = 1; | |
16246 | ||
dc718098 | 16247 | if (die_is_declaration (die, cu)) |
876cecd0 | 16248 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
16249 | else if (attr == NULL && die->child == NULL |
16250 | && producer_is_realview (cu->producer)) | |
16251 | /* RealView does not output the required DW_AT_declaration | |
16252 | on incomplete types. */ | |
16253 | TYPE_STUB (type) = 1; | |
dc718098 | 16254 | |
c906108c SS |
16255 | /* We need to add the type field to the die immediately so we don't |
16256 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 16257 | type within the structure itself. */ |
1c379e20 | 16258 | set_die_type (die, type, cu); |
c906108c | 16259 | |
7e314c57 JK |
16260 | /* set_die_type should be already done. */ |
16261 | set_descriptive_type (type, die, cu); | |
16262 | ||
c767944b DJ |
16263 | return type; |
16264 | } | |
16265 | ||
2ddeaf8a TT |
16266 | /* A helper for process_structure_scope that handles a single member |
16267 | DIE. */ | |
16268 | ||
16269 | static void | |
16270 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
16271 | struct field_info *fi, | |
16272 | std::vector<struct symbol *> *template_args, | |
16273 | struct dwarf2_cu *cu) | |
16274 | { | |
16275 | if (child_die->tag == DW_TAG_member | |
16276 | || child_die->tag == DW_TAG_variable | |
16277 | || child_die->tag == DW_TAG_variant_part) | |
16278 | { | |
16279 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
16280 | should be a DW_TAG_member that is a declaration, but | |
16281 | all versions of G++ as of this writing (so through at | |
16282 | least 3.2.1) incorrectly generate DW_TAG_variable | |
16283 | tags for them instead. */ | |
16284 | dwarf2_add_field (fi, child_die, cu); | |
16285 | } | |
16286 | else if (child_die->tag == DW_TAG_subprogram) | |
16287 | { | |
16288 | /* Rust doesn't have member functions in the C++ sense. | |
16289 | However, it does emit ordinary functions as children | |
16290 | of a struct DIE. */ | |
16291 | if (cu->language == language_rust) | |
16292 | read_func_scope (child_die, cu); | |
16293 | else | |
16294 | { | |
16295 | /* C++ member function. */ | |
16296 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
16297 | } | |
16298 | } | |
16299 | else if (child_die->tag == DW_TAG_inheritance) | |
16300 | { | |
16301 | /* C++ base class field. */ | |
16302 | dwarf2_add_field (fi, child_die, cu); | |
16303 | } | |
16304 | else if (type_can_define_types (child_die)) | |
16305 | dwarf2_add_type_defn (fi, child_die, cu); | |
16306 | else if (child_die->tag == DW_TAG_template_type_param | |
16307 | || child_die->tag == DW_TAG_template_value_param) | |
16308 | { | |
16309 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
16310 | ||
16311 | if (arg != NULL) | |
16312 | template_args->push_back (arg); | |
16313 | } | |
16314 | else if (child_die->tag == DW_TAG_variant) | |
16315 | { | |
16316 | /* In a variant we want to get the discriminant and also add a | |
16317 | field for our sole member child. */ | |
16318 | struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu); | |
16319 | ||
16320 | for (struct die_info *variant_child = child_die->child; | |
16321 | variant_child != NULL; | |
16322 | variant_child = sibling_die (variant_child)) | |
16323 | { | |
16324 | if (variant_child->tag == DW_TAG_member) | |
16325 | { | |
16326 | handle_struct_member_die (variant_child, type, fi, | |
16327 | template_args, cu); | |
16328 | /* Only handle the one. */ | |
16329 | break; | |
16330 | } | |
16331 | } | |
16332 | ||
16333 | /* We don't handle this but we might as well report it if we see | |
16334 | it. */ | |
16335 | if (dwarf2_attr (child_die, DW_AT_discr_list, cu) != nullptr) | |
16336 | complaint (&symfile_complaints, | |
16337 | _("DW_AT_discr_list is not supported yet" | |
16338 | " - DIE at %s [in module %s]"), | |
16339 | sect_offset_str (child_die->sect_off), | |
16340 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16341 | ||
16342 | /* The first field was just added, so we can stash the | |
16343 | discriminant there. */ | |
be2daae6 | 16344 | gdb_assert (!fi->fields.empty ()); |
2ddeaf8a | 16345 | if (discr == NULL) |
be2daae6 | 16346 | fi->fields.back ().variant.default_branch = true; |
2ddeaf8a | 16347 | else |
be2daae6 | 16348 | fi->fields.back ().variant.discriminant_value = DW_UNSND (discr); |
2ddeaf8a TT |
16349 | } |
16350 | } | |
16351 | ||
c767944b DJ |
16352 | /* Finish creating a structure or union type, including filling in |
16353 | its members and creating a symbol for it. */ | |
16354 | ||
16355 | static void | |
16356 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16357 | { | |
518817b3 | 16358 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 16359 | struct die_info *child_die; |
c767944b DJ |
16360 | struct type *type; |
16361 | ||
16362 | type = get_die_type (die, cu); | |
16363 | if (type == NULL) | |
16364 | type = read_structure_type (die, cu); | |
16365 | ||
2ddeaf8a TT |
16366 | /* When reading a DW_TAG_variant_part, we need to notice when we |
16367 | read the discriminant member, so we can record it later in the | |
16368 | discriminant_info. */ | |
16369 | bool is_variant_part = TYPE_FLAG_DISCRIMINATED_UNION (type); | |
16370 | sect_offset discr_offset; | |
16371 | ||
16372 | if (is_variant_part) | |
16373 | { | |
16374 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
16375 | if (discr == NULL) | |
16376 | { | |
16377 | /* Maybe it's a univariant form, an extension we support. | |
16378 | In this case arrange not to check the offset. */ | |
16379 | is_variant_part = false; | |
16380 | } | |
16381 | else if (attr_form_is_ref (discr)) | |
16382 | { | |
16383 | struct dwarf2_cu *target_cu = cu; | |
16384 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16385 | ||
16386 | discr_offset = target_die->sect_off; | |
16387 | } | |
16388 | else | |
16389 | { | |
16390 | complaint (&symfile_complaints, | |
16391 | _("DW_AT_discr does not have DIE reference form" | |
16392 | " - DIE at %s [in module %s]"), | |
16393 | sect_offset_str (die->sect_off), | |
16394 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16395 | is_variant_part = false; | |
16396 | } | |
16397 | } | |
16398 | ||
e142c38c | 16399 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16400 | { |
16401 | struct field_info fi; | |
2f4732b0 | 16402 | std::vector<struct symbol *> template_args; |
c906108c | 16403 | |
639d11d3 | 16404 | child_die = die->child; |
c906108c SS |
16405 | |
16406 | while (child_die && child_die->tag) | |
16407 | { | |
2ddeaf8a | 16408 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
34eaf542 | 16409 | |
2ddeaf8a | 16410 | if (is_variant_part && discr_offset == child_die->sect_off) |
be2daae6 | 16411 | fi.fields.back ().variant.is_discriminant = true; |
34eaf542 | 16412 | |
c906108c SS |
16413 | child_die = sibling_die (child_die); |
16414 | } | |
16415 | ||
34eaf542 | 16416 | /* Attach template arguments to type. */ |
2f4732b0 | 16417 | if (!template_args.empty ()) |
34eaf542 TT |
16418 | { |
16419 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2f4732b0 | 16420 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16421 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16422 | = XOBNEWVEC (&objfile->objfile_obstack, |
16423 | struct symbol *, | |
16424 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16425 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16426 | template_args.data (), |
34eaf542 TT |
16427 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16428 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16429 | } |
16430 | ||
c906108c SS |
16431 | /* Attach fields and member functions to the type. */ |
16432 | if (fi.nfields) | |
e7c27a73 | 16433 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16434 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16435 | { |
e7c27a73 | 16436 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16437 | |
c5aa993b | 16438 | /* Get the type which refers to the base class (possibly this |
c906108c | 16439 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16440 | class from the DW_AT_containing_type attribute. This use of |
16441 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16442 | |
e142c38c | 16443 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16444 | { |
e7c27a73 | 16445 | struct type *t = die_containing_type (die, cu); |
c906108c | 16446 | |
ae6ae975 | 16447 | set_type_vptr_basetype (type, t); |
c906108c SS |
16448 | if (type == t) |
16449 | { | |
c906108c SS |
16450 | int i; |
16451 | ||
16452 | /* Our own class provides vtbl ptr. */ | |
16453 | for (i = TYPE_NFIELDS (t) - 1; | |
16454 | i >= TYPE_N_BASECLASSES (t); | |
16455 | --i) | |
16456 | { | |
0d5cff50 | 16457 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16458 | |
1168df01 | 16459 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16460 | { |
ae6ae975 | 16461 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16462 | break; |
16463 | } | |
16464 | } | |
16465 | ||
16466 | /* Complain if virtual function table field not found. */ | |
16467 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 16468 | complaint (&symfile_complaints, |
3e43a32a MS |
16469 | _("virtual function table pointer " |
16470 | "not found when defining class '%s'"), | |
4d3c2250 KB |
16471 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
16472 | ""); | |
c906108c SS |
16473 | } |
16474 | else | |
16475 | { | |
ae6ae975 | 16476 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16477 | } |
16478 | } | |
f6235d4c | 16479 | else if (cu->producer |
61012eef | 16480 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16481 | { |
16482 | /* The IBM XLC compiler does not provide direct indication | |
16483 | of the containing type, but the vtable pointer is | |
16484 | always named __vfp. */ | |
16485 | ||
16486 | int i; | |
16487 | ||
16488 | for (i = TYPE_NFIELDS (type) - 1; | |
16489 | i >= TYPE_N_BASECLASSES (type); | |
16490 | --i) | |
16491 | { | |
16492 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16493 | { | |
ae6ae975 DE |
16494 | set_type_vptr_fieldno (type, i); |
16495 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16496 | break; |
16497 | } | |
16498 | } | |
16499 | } | |
c906108c | 16500 | } |
98751a41 JK |
16501 | |
16502 | /* Copy fi.typedef_field_list linked list elements content into the | |
16503 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16504 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16505 | { |
be2daae6 | 16506 | int count = fi.typedef_field_list.size (); |
98751a41 | 16507 | |
a0d7a4ff | 16508 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16509 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16510 | = ((struct decl_field *) |
be2daae6 TT |
16511 | TYPE_ALLOC (type, |
16512 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16513 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16514 | |
be2daae6 TT |
16515 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16516 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16517 | } |
c767944b | 16518 | |
883fd55a KS |
16519 | /* Copy fi.nested_types_list linked list elements content into the |
16520 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16521 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16522 | { |
be2daae6 | 16523 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16524 | |
16525 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16526 | TYPE_NESTED_TYPES_ARRAY (type) | |
16527 | = ((struct decl_field *) | |
be2daae6 TT |
16528 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16529 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16530 | |
be2daae6 TT |
16531 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16532 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16533 | } |
c906108c | 16534 | } |
63d06c5c | 16535 | |
bb5ed363 | 16536 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16537 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16538 | cu->rust_unions.push_back (type); | |
0b92b5bb | 16539 | |
90aeadfc DC |
16540 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16541 | snapshots) has been known to create a die giving a declaration | |
16542 | for a class that has, as a child, a die giving a definition for a | |
16543 | nested class. So we have to process our children even if the | |
16544 | current die is a declaration. Normally, of course, a declaration | |
16545 | won't have any children at all. */ | |
134d01f1 | 16546 | |
ca040673 DE |
16547 | child_die = die->child; |
16548 | ||
90aeadfc DC |
16549 | while (child_die != NULL && child_die->tag) |
16550 | { | |
16551 | if (child_die->tag == DW_TAG_member | |
16552 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16553 | || child_die->tag == DW_TAG_inheritance |
16554 | || child_die->tag == DW_TAG_template_value_param | |
16555 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16556 | { |
90aeadfc | 16557 | /* Do nothing. */ |
134d01f1 | 16558 | } |
90aeadfc DC |
16559 | else |
16560 | process_die (child_die, cu); | |
134d01f1 | 16561 | |
90aeadfc | 16562 | child_die = sibling_die (child_die); |
134d01f1 DJ |
16563 | } |
16564 | ||
fa4028e9 JB |
16565 | /* Do not consider external references. According to the DWARF standard, |
16566 | these DIEs are identified by the fact that they have no byte_size | |
16567 | attribute, and a declaration attribute. */ | |
16568 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
16569 | || !die_is_declaration (die, cu)) | |
c767944b | 16570 | new_symbol (die, type, cu); |
134d01f1 DJ |
16571 | } |
16572 | ||
55426c9d JB |
16573 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
16574 | update TYPE using some information only available in DIE's children. */ | |
16575 | ||
16576 | static void | |
16577 | update_enumeration_type_from_children (struct die_info *die, | |
16578 | struct type *type, | |
16579 | struct dwarf2_cu *cu) | |
16580 | { | |
60f7655a | 16581 | struct die_info *child_die; |
55426c9d JB |
16582 | int unsigned_enum = 1; |
16583 | int flag_enum = 1; | |
16584 | ULONGEST mask = 0; | |
55426c9d | 16585 | |
8268c778 | 16586 | auto_obstack obstack; |
55426c9d | 16587 | |
60f7655a DE |
16588 | for (child_die = die->child; |
16589 | child_die != NULL && child_die->tag; | |
16590 | child_die = sibling_die (child_die)) | |
55426c9d JB |
16591 | { |
16592 | struct attribute *attr; | |
16593 | LONGEST value; | |
16594 | const gdb_byte *bytes; | |
16595 | struct dwarf2_locexpr_baton *baton; | |
16596 | const char *name; | |
60f7655a | 16597 | |
55426c9d JB |
16598 | if (child_die->tag != DW_TAG_enumerator) |
16599 | continue; | |
16600 | ||
16601 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16602 | if (attr == NULL) | |
16603 | continue; | |
16604 | ||
16605 | name = dwarf2_name (child_die, cu); | |
16606 | if (name == NULL) | |
16607 | name = "<anonymous enumerator>"; | |
16608 | ||
16609 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16610 | &value, &bytes, &baton); | |
16611 | if (value < 0) | |
16612 | { | |
16613 | unsigned_enum = 0; | |
16614 | flag_enum = 0; | |
16615 | } | |
16616 | else if ((mask & value) != 0) | |
16617 | flag_enum = 0; | |
16618 | else | |
16619 | mask |= value; | |
16620 | ||
16621 | /* If we already know that the enum type is neither unsigned, nor | |
16622 | a flag type, no need to look at the rest of the enumerates. */ | |
16623 | if (!unsigned_enum && !flag_enum) | |
16624 | break; | |
55426c9d JB |
16625 | } |
16626 | ||
16627 | if (unsigned_enum) | |
16628 | TYPE_UNSIGNED (type) = 1; | |
16629 | if (flag_enum) | |
16630 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16631 | } |
16632 | ||
134d01f1 DJ |
16633 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16634 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16635 | |
f792889a | 16636 | static struct type * |
134d01f1 | 16637 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16638 | { |
518817b3 | 16639 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16640 | struct type *type; |
c906108c | 16641 | struct attribute *attr; |
0114d602 | 16642 | const char *name; |
134d01f1 | 16643 | |
348e048f DE |
16644 | /* If the definition of this type lives in .debug_types, read that type. |
16645 | Don't follow DW_AT_specification though, that will take us back up | |
16646 | the chain and we want to go down. */ | |
45e58e77 | 16647 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
16648 | if (attr) |
16649 | { | |
ac9ec31b | 16650 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16651 | |
ac9ec31b | 16652 | /* The type's CU may not be the same as CU. |
02142a6c | 16653 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16654 | return set_die_type (die, type, cu); |
16655 | } | |
16656 | ||
c906108c SS |
16657 | type = alloc_type (objfile); |
16658 | ||
16659 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 16660 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16661 | if (name != NULL) |
7d455152 | 16662 | TYPE_TAG_NAME (type) = name; |
c906108c | 16663 | |
0626fc76 TT |
16664 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16665 | if (attr != NULL) | |
16666 | { | |
16667 | struct type *underlying_type = die_type (die, cu); | |
16668 | ||
16669 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16670 | } | |
16671 | ||
e142c38c | 16672 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
16673 | if (attr) |
16674 | { | |
16675 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16676 | } | |
16677 | else | |
16678 | { | |
16679 | TYPE_LENGTH (type) = 0; | |
16680 | } | |
16681 | ||
137033e9 JB |
16682 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16683 | declared as private in the package spec, and then defined only | |
16684 | inside the package body. Such types are known as Taft Amendment | |
16685 | Types. When another package uses such a type, an incomplete DIE | |
16686 | may be generated by the compiler. */ | |
02eb380e | 16687 | if (die_is_declaration (die, cu)) |
876cecd0 | 16688 | TYPE_STUB (type) = 1; |
02eb380e | 16689 | |
0626fc76 TT |
16690 | /* Finish the creation of this type by using the enum's children. |
16691 | We must call this even when the underlying type has been provided | |
16692 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
16693 | update_enumeration_type_from_children (die, type, cu); |
16694 | ||
0626fc76 TT |
16695 | /* If this type has an underlying type that is not a stub, then we |
16696 | may use its attributes. We always use the "unsigned" attribute | |
16697 | in this situation, because ordinarily we guess whether the type | |
16698 | is unsigned -- but the guess can be wrong and the underlying type | |
16699 | can tell us the reality. However, we defer to a local size | |
16700 | attribute if one exists, because this lets the compiler override | |
16701 | the underlying type if needed. */ | |
16702 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16703 | { | |
16704 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
16705 | if (TYPE_LENGTH (type) == 0) | |
16706 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
16707 | } | |
16708 | ||
3d567982 TT |
16709 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16710 | ||
f792889a | 16711 | return set_die_type (die, type, cu); |
134d01f1 DJ |
16712 | } |
16713 | ||
16714 | /* Given a pointer to a die which begins an enumeration, process all | |
16715 | the dies that define the members of the enumeration, and create the | |
16716 | symbol for the enumeration type. | |
16717 | ||
16718 | NOTE: We reverse the order of the element list. */ | |
16719 | ||
16720 | static void | |
16721 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16722 | { | |
f792889a | 16723 | struct type *this_type; |
134d01f1 | 16724 | |
f792889a DJ |
16725 | this_type = get_die_type (die, cu); |
16726 | if (this_type == NULL) | |
16727 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16728 | |
639d11d3 | 16729 | if (die->child != NULL) |
c906108c | 16730 | { |
9dc481d3 DE |
16731 | struct die_info *child_die; |
16732 | struct symbol *sym; | |
16733 | struct field *fields = NULL; | |
16734 | int num_fields = 0; | |
15d034d0 | 16735 | const char *name; |
9dc481d3 | 16736 | |
639d11d3 | 16737 | child_die = die->child; |
c906108c SS |
16738 | while (child_die && child_die->tag) |
16739 | { | |
16740 | if (child_die->tag != DW_TAG_enumerator) | |
16741 | { | |
e7c27a73 | 16742 | process_die (child_die, cu); |
c906108c SS |
16743 | } |
16744 | else | |
16745 | { | |
39cbfefa DJ |
16746 | name = dwarf2_name (child_die, cu); |
16747 | if (name) | |
c906108c | 16748 | { |
f792889a | 16749 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
16750 | |
16751 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
16752 | { | |
16753 | fields = (struct field *) | |
16754 | xrealloc (fields, | |
16755 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 16756 | * sizeof (struct field)); |
c906108c SS |
16757 | } |
16758 | ||
3567439c | 16759 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 16760 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 16761 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
16762 | FIELD_BITSIZE (fields[num_fields]) = 0; |
16763 | ||
16764 | num_fields++; | |
16765 | } | |
16766 | } | |
16767 | ||
16768 | child_die = sibling_die (child_die); | |
16769 | } | |
16770 | ||
16771 | if (num_fields) | |
16772 | { | |
f792889a DJ |
16773 | TYPE_NFIELDS (this_type) = num_fields; |
16774 | TYPE_FIELDS (this_type) = (struct field *) | |
16775 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
16776 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 16777 | sizeof (struct field) * num_fields); |
b8c9b27d | 16778 | xfree (fields); |
c906108c | 16779 | } |
c906108c | 16780 | } |
134d01f1 | 16781 | |
6c83ed52 TT |
16782 | /* If we are reading an enum from a .debug_types unit, and the enum |
16783 | is a declaration, and the enum is not the signatured type in the | |
16784 | unit, then we do not want to add a symbol for it. Adding a | |
16785 | symbol would in some cases obscure the true definition of the | |
16786 | enum, giving users an incomplete type when the definition is | |
16787 | actually available. Note that we do not want to do this for all | |
16788 | enums which are just declarations, because C++0x allows forward | |
16789 | enum declarations. */ | |
3019eac3 | 16790 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16791 | && die_is_declaration (die, cu)) |
16792 | { | |
52dc124a | 16793 | struct signatured_type *sig_type; |
6c83ed52 | 16794 | |
c0f78cd4 | 16795 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16796 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16797 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16798 | return; |
16799 | } | |
16800 | ||
f792889a | 16801 | new_symbol (die, this_type, cu); |
c906108c SS |
16802 | } |
16803 | ||
16804 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16805 | the DIE's type field. For now, this only handles one dimensional | |
16806 | arrays. */ | |
16807 | ||
f792889a | 16808 | static struct type * |
e7c27a73 | 16809 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16810 | { |
518817b3 | 16811 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16812 | struct die_info *child_die; |
7e314c57 | 16813 | struct type *type; |
c906108c | 16814 | struct type *element_type, *range_type, *index_type; |
c906108c | 16815 | struct attribute *attr; |
15d034d0 | 16816 | const char *name; |
a405673c | 16817 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16818 | unsigned int bit_stride = 0; |
c906108c | 16819 | |
e7c27a73 | 16820 | element_type = die_type (die, cu); |
c906108c | 16821 | |
7e314c57 JK |
16822 | /* The die_type call above may have already set the type for this DIE. */ |
16823 | type = get_die_type (die, cu); | |
16824 | if (type) | |
16825 | return type; | |
16826 | ||
dc53a7ad JB |
16827 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16828 | if (attr != NULL) | |
a405673c JB |
16829 | { |
16830 | int stride_ok; | |
16831 | ||
16832 | byte_stride_prop | |
16833 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
16834 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop); | |
16835 | if (!stride_ok) | |
16836 | { | |
16837 | complaint (&symfile_complaints, | |
16838 | _("unable to read array DW_AT_byte_stride " | |
9d8780f0 SM |
16839 | " - DIE at %s [in module %s]"), |
16840 | sect_offset_str (die->sect_off), | |
518817b3 | 16841 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
16842 | /* Ignore this attribute. We will likely not be able to print |
16843 | arrays of this type correctly, but there is little we can do | |
16844 | to help if we cannot read the attribute's value. */ | |
16845 | byte_stride_prop = NULL; | |
16846 | } | |
16847 | } | |
dc53a7ad JB |
16848 | |
16849 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16850 | if (attr != NULL) | |
16851 | bit_stride = DW_UNSND (attr); | |
16852 | ||
c906108c SS |
16853 | /* Irix 6.2 native cc creates array types without children for |
16854 | arrays with unspecified length. */ | |
639d11d3 | 16855 | if (die->child == NULL) |
c906108c | 16856 | { |
46bf5051 | 16857 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16858 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16859 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16860 | byte_stride_prop, bit_stride); |
f792889a | 16861 | return set_die_type (die, type, cu); |
c906108c SS |
16862 | } |
16863 | ||
791afaa2 | 16864 | std::vector<struct type *> range_types; |
639d11d3 | 16865 | child_die = die->child; |
c906108c SS |
16866 | while (child_die && child_die->tag) |
16867 | { | |
16868 | if (child_die->tag == DW_TAG_subrange_type) | |
16869 | { | |
f792889a | 16870 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16871 | |
f792889a | 16872 | if (child_type != NULL) |
a02abb62 | 16873 | { |
0963b4bd MS |
16874 | /* The range type was succesfully read. Save it for the |
16875 | array type creation. */ | |
791afaa2 | 16876 | range_types.push_back (child_type); |
a02abb62 | 16877 | } |
c906108c SS |
16878 | } |
16879 | child_die = sibling_die (child_die); | |
16880 | } | |
16881 | ||
16882 | /* Dwarf2 dimensions are output from left to right, create the | |
16883 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16884 | |
c906108c | 16885 | type = element_type; |
7ca2d3a3 DL |
16886 | |
16887 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16888 | { | |
16889 | int i = 0; | |
9a619af0 | 16890 | |
791afaa2 | 16891 | while (i < range_types.size ()) |
dc53a7ad | 16892 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16893 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16894 | } |
16895 | else | |
16896 | { | |
791afaa2 | 16897 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16898 | while (ndim-- > 0) |
dc53a7ad | 16899 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16900 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16901 | } |
c906108c | 16902 | |
f5f8a009 EZ |
16903 | /* Understand Dwarf2 support for vector types (like they occur on |
16904 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16905 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16906 | custom vendor extension. The main difference between a regular | |
16907 | array and the vector variant is that vectors are passed by value | |
16908 | to functions. */ | |
e142c38c | 16909 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 16910 | if (attr) |
ea37ba09 | 16911 | make_vector_type (type); |
f5f8a009 | 16912 | |
dbc98a8b KW |
16913 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16914 | implementation may choose to implement triple vectors using this | |
16915 | attribute. */ | |
16916 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
16917 | if (attr) | |
16918 | { | |
16919 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16920 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16921 | else | |
3e43a32a MS |
16922 | complaint (&symfile_complaints, |
16923 | _("DW_AT_byte_size for array type smaller " | |
16924 | "than the total size of elements")); | |
dbc98a8b KW |
16925 | } |
16926 | ||
39cbfefa DJ |
16927 | name = dwarf2_name (die, cu); |
16928 | if (name) | |
16929 | TYPE_NAME (type) = name; | |
6e70227d | 16930 | |
0963b4bd | 16931 | /* Install the type in the die. */ |
7e314c57 JK |
16932 | set_die_type (die, type, cu); |
16933 | ||
16934 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16935 | set_descriptive_type (type, die, cu); |
16936 | ||
7e314c57 | 16937 | return type; |
c906108c SS |
16938 | } |
16939 | ||
7ca2d3a3 | 16940 | static enum dwarf_array_dim_ordering |
6e70227d | 16941 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16942 | { |
16943 | struct attribute *attr; | |
16944 | ||
16945 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16946 | ||
aead7601 SM |
16947 | if (attr) |
16948 | return (enum dwarf_array_dim_ordering) DW_SND (attr); | |
7ca2d3a3 | 16949 | |
0963b4bd MS |
16950 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16951 | opposite order to the dwarf2 specification, but data is still | |
16952 | laid out as per normal fortran. | |
7ca2d3a3 | 16953 | |
0963b4bd MS |
16954 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16955 | version checking. */ | |
7ca2d3a3 | 16956 | |
905e0470 PM |
16957 | if (cu->language == language_fortran |
16958 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16959 | { |
16960 | return DW_ORD_row_major; | |
16961 | } | |
16962 | ||
6e70227d | 16963 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16964 | { |
16965 | case array_column_major: | |
16966 | return DW_ORD_col_major; | |
16967 | case array_row_major: | |
16968 | default: | |
16969 | return DW_ORD_row_major; | |
16970 | }; | |
16971 | } | |
16972 | ||
72019c9c | 16973 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16974 | the DIE's type field. */ |
72019c9c | 16975 | |
f792889a | 16976 | static struct type * |
72019c9c GM |
16977 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16978 | { | |
7e314c57 JK |
16979 | struct type *domain_type, *set_type; |
16980 | struct attribute *attr; | |
f792889a | 16981 | |
7e314c57 JK |
16982 | domain_type = die_type (die, cu); |
16983 | ||
16984 | /* The die_type call above may have already set the type for this DIE. */ | |
16985 | set_type = get_die_type (die, cu); | |
16986 | if (set_type) | |
16987 | return set_type; | |
16988 | ||
16989 | set_type = create_set_type (NULL, domain_type); | |
16990 | ||
16991 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
16992 | if (attr) |
16993 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 16994 | |
f792889a | 16995 | return set_die_type (die, set_type, cu); |
72019c9c | 16996 | } |
7ca2d3a3 | 16997 | |
0971de02 TT |
16998 | /* A helper for read_common_block that creates a locexpr baton. |
16999 | SYM is the symbol which we are marking as computed. | |
17000 | COMMON_DIE is the DIE for the common block. | |
17001 | COMMON_LOC is the location expression attribute for the common | |
17002 | block itself. | |
17003 | MEMBER_LOC is the location expression attribute for the particular | |
17004 | member of the common block that we are processing. | |
17005 | CU is the CU from which the above come. */ | |
17006 | ||
17007 | static void | |
17008 | mark_common_block_symbol_computed (struct symbol *sym, | |
17009 | struct die_info *common_die, | |
17010 | struct attribute *common_loc, | |
17011 | struct attribute *member_loc, | |
17012 | struct dwarf2_cu *cu) | |
17013 | { | |
518817b3 SM |
17014 | struct dwarf2_per_objfile *dwarf2_per_objfile |
17015 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
17016 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
17017 | struct dwarf2_locexpr_baton *baton; | |
17018 | gdb_byte *ptr; | |
17019 | unsigned int cu_off; | |
17020 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
17021 | LONGEST offset = 0; | |
17022 | ||
17023 | gdb_assert (common_loc && member_loc); | |
17024 | gdb_assert (attr_form_is_block (common_loc)); | |
17025 | gdb_assert (attr_form_is_block (member_loc) | |
17026 | || attr_form_is_constant (member_loc)); | |
17027 | ||
8d749320 | 17028 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
17029 | baton->per_cu = cu->per_cu; |
17030 | gdb_assert (baton->per_cu); | |
17031 | ||
17032 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
17033 | ||
17034 | if (attr_form_is_constant (member_loc)) | |
17035 | { | |
17036 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
17037 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
17038 | } | |
17039 | else | |
17040 | baton->size += DW_BLOCK (member_loc)->size; | |
17041 | ||
224c3ddb | 17042 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
17043 | baton->data = ptr; |
17044 | ||
17045 | *ptr++ = DW_OP_call4; | |
9c541725 | 17046 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
17047 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
17048 | ptr += 4; | |
17049 | ||
17050 | if (attr_form_is_constant (member_loc)) | |
17051 | { | |
17052 | *ptr++ = DW_OP_addr; | |
17053 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
17054 | ptr += cu->header.addr_size; | |
17055 | } | |
17056 | else | |
17057 | { | |
17058 | /* We have to copy the data here, because DW_OP_call4 will only | |
17059 | use a DW_AT_location attribute. */ | |
17060 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
17061 | ptr += DW_BLOCK (member_loc)->size; | |
17062 | } | |
17063 | ||
17064 | *ptr++ = DW_OP_plus; | |
17065 | gdb_assert (ptr - baton->data == baton->size); | |
17066 | ||
0971de02 | 17067 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 17068 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
17069 | } |
17070 | ||
4357ac6c TT |
17071 | /* Create appropriate locally-scoped variables for all the |
17072 | DW_TAG_common_block entries. Also create a struct common_block | |
17073 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
17074 | is used to sepate the common blocks name namespace from regular | |
17075 | variable names. */ | |
c906108c SS |
17076 | |
17077 | static void | |
e7c27a73 | 17078 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17079 | { |
0971de02 TT |
17080 | struct attribute *attr; |
17081 | ||
17082 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
17083 | if (attr) | |
17084 | { | |
17085 | /* Support the .debug_loc offsets. */ | |
17086 | if (attr_form_is_block (attr)) | |
17087 | { | |
17088 | /* Ok. */ | |
17089 | } | |
17090 | else if (attr_form_is_section_offset (attr)) | |
17091 | { | |
17092 | dwarf2_complex_location_expr_complaint (); | |
17093 | attr = NULL; | |
17094 | } | |
17095 | else | |
17096 | { | |
17097 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17098 | "common block member"); | |
17099 | attr = NULL; | |
17100 | } | |
17101 | } | |
17102 | ||
639d11d3 | 17103 | if (die->child != NULL) |
c906108c | 17104 | { |
518817b3 | 17105 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
17106 | struct die_info *child_die; |
17107 | size_t n_entries = 0, size; | |
17108 | struct common_block *common_block; | |
17109 | struct symbol *sym; | |
74ac6d43 | 17110 | |
4357ac6c TT |
17111 | for (child_die = die->child; |
17112 | child_die && child_die->tag; | |
17113 | child_die = sibling_die (child_die)) | |
17114 | ++n_entries; | |
17115 | ||
17116 | size = (sizeof (struct common_block) | |
17117 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
17118 | common_block |
17119 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
17120 | size); | |
4357ac6c TT |
17121 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
17122 | common_block->n_entries = 0; | |
17123 | ||
17124 | for (child_die = die->child; | |
17125 | child_die && child_die->tag; | |
17126 | child_die = sibling_die (child_die)) | |
17127 | { | |
17128 | /* Create the symbol in the DW_TAG_common_block block in the current | |
17129 | symbol scope. */ | |
e7c27a73 | 17130 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
17131 | if (sym != NULL) |
17132 | { | |
17133 | struct attribute *member_loc; | |
17134 | ||
17135 | common_block->contents[common_block->n_entries++] = sym; | |
17136 | ||
17137 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
17138 | cu); | |
17139 | if (member_loc) | |
17140 | { | |
17141 | /* GDB has handled this for a long time, but it is | |
17142 | not specified by DWARF. It seems to have been | |
17143 | emitted by gfortran at least as recently as: | |
17144 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
17145 | complaint (&symfile_complaints, | |
17146 | _("Variable in common block has " | |
17147 | "DW_AT_data_member_location " | |
9d8780f0 SM |
17148 | "- DIE at %s [in module %s]"), |
17149 | sect_offset_str (child_die->sect_off), | |
518817b3 | 17150 | objfile_name (objfile)); |
0971de02 TT |
17151 | |
17152 | if (attr_form_is_section_offset (member_loc)) | |
17153 | dwarf2_complex_location_expr_complaint (); | |
17154 | else if (attr_form_is_constant (member_loc) | |
17155 | || attr_form_is_block (member_loc)) | |
17156 | { | |
17157 | if (attr) | |
17158 | mark_common_block_symbol_computed (sym, die, attr, | |
17159 | member_loc, cu); | |
17160 | } | |
17161 | else | |
17162 | dwarf2_complex_location_expr_complaint (); | |
17163 | } | |
17164 | } | |
c906108c | 17165 | } |
4357ac6c TT |
17166 | |
17167 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
17168 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
17169 | } |
17170 | } | |
17171 | ||
0114d602 | 17172 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 17173 | |
0114d602 DJ |
17174 | static struct type * |
17175 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 17176 | { |
518817b3 | 17177 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17178 | const char *previous_prefix, *name; |
9219021c | 17179 | int is_anonymous; |
0114d602 DJ |
17180 | struct type *type; |
17181 | ||
17182 | /* For extensions, reuse the type of the original namespace. */ | |
17183 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
17184 | { | |
17185 | struct die_info *ext_die; | |
17186 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 17187 | |
0114d602 DJ |
17188 | ext_die = dwarf2_extension (die, &ext_cu); |
17189 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
17190 | |
17191 | /* EXT_CU may not be the same as CU. | |
02142a6c | 17192 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
17193 | return set_die_type (die, type, cu); |
17194 | } | |
9219021c | 17195 | |
e142c38c | 17196 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
17197 | |
17198 | /* Now build the name of the current namespace. */ | |
17199 | ||
0114d602 DJ |
17200 | previous_prefix = determine_prefix (die, cu); |
17201 | if (previous_prefix[0] != '\0') | |
17202 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 17203 | previous_prefix, name, 0, cu); |
0114d602 DJ |
17204 | |
17205 | /* Create the type. */ | |
19f392bc | 17206 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 DJ |
17207 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
17208 | ||
60531b24 | 17209 | return set_die_type (die, type, cu); |
0114d602 DJ |
17210 | } |
17211 | ||
22cee43f | 17212 | /* Read a namespace scope. */ |
0114d602 DJ |
17213 | |
17214 | static void | |
17215 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
17216 | { | |
518817b3 | 17217 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17218 | int is_anonymous; |
9219021c | 17219 | |
5c4e30ca DC |
17220 | /* Add a symbol associated to this if we haven't seen the namespace |
17221 | before. Also, add a using directive if it's an anonymous | |
17222 | namespace. */ | |
9219021c | 17223 | |
f2f0e013 | 17224 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
17225 | { |
17226 | struct type *type; | |
17227 | ||
0114d602 | 17228 | type = read_type_die (die, cu); |
e7c27a73 | 17229 | new_symbol (die, type, cu); |
5c4e30ca | 17230 | |
e8e80198 | 17231 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 17232 | if (is_anonymous) |
0114d602 DJ |
17233 | { |
17234 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 17235 | |
eb1e02fd | 17236 | std::vector<const char *> excludes; |
22cee43f PMR |
17237 | add_using_directive (using_directives (cu->language), |
17238 | previous_prefix, TYPE_NAME (type), NULL, | |
eb1e02fd | 17239 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 17240 | } |
5c4e30ca | 17241 | } |
9219021c | 17242 | |
639d11d3 | 17243 | if (die->child != NULL) |
d9fa45fe | 17244 | { |
639d11d3 | 17245 | struct die_info *child_die = die->child; |
6e70227d | 17246 | |
d9fa45fe DC |
17247 | while (child_die && child_die->tag) |
17248 | { | |
e7c27a73 | 17249 | process_die (child_die, cu); |
d9fa45fe DC |
17250 | child_die = sibling_die (child_die); |
17251 | } | |
17252 | } | |
38d518c9 EZ |
17253 | } |
17254 | ||
f55ee35c JK |
17255 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
17256 | imported module. Still we need that type as local Fortran "use ... only" | |
17257 | declaration imports depend on the created type in determine_prefix. */ | |
17258 | ||
17259 | static struct type * | |
17260 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
17261 | { | |
518817b3 | 17262 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 17263 | const char *module_name; |
f55ee35c JK |
17264 | struct type *type; |
17265 | ||
17266 | module_name = dwarf2_name (die, cu); | |
17267 | if (!module_name) | |
3e43a32a | 17268 | complaint (&symfile_complaints, |
9d8780f0 SM |
17269 | _("DW_TAG_module has no name, offset %s"), |
17270 | sect_offset_str (die->sect_off)); | |
19f392bc | 17271 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c JK |
17272 | |
17273 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
17274 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
17275 | ||
17276 | return set_die_type (die, type, cu); | |
17277 | } | |
17278 | ||
5d7cb8df JK |
17279 | /* Read a Fortran module. */ |
17280 | ||
17281 | static void | |
17282 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
17283 | { | |
17284 | struct die_info *child_die = die->child; | |
530e8392 KB |
17285 | struct type *type; |
17286 | ||
17287 | type = read_type_die (die, cu); | |
17288 | new_symbol (die, type, cu); | |
5d7cb8df | 17289 | |
5d7cb8df JK |
17290 | while (child_die && child_die->tag) |
17291 | { | |
17292 | process_die (child_die, cu); | |
17293 | child_die = sibling_die (child_die); | |
17294 | } | |
17295 | } | |
17296 | ||
38d518c9 EZ |
17297 | /* Return the name of the namespace represented by DIE. Set |
17298 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
17299 | namespace. */ | |
17300 | ||
17301 | static const char * | |
e142c38c | 17302 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
17303 | { |
17304 | struct die_info *current_die; | |
17305 | const char *name = NULL; | |
17306 | ||
17307 | /* Loop through the extensions until we find a name. */ | |
17308 | ||
17309 | for (current_die = die; | |
17310 | current_die != NULL; | |
f2f0e013 | 17311 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 17312 | { |
96553a0c DE |
17313 | /* We don't use dwarf2_name here so that we can detect the absence |
17314 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 17315 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 17316 | |
38d518c9 EZ |
17317 | if (name != NULL) |
17318 | break; | |
17319 | } | |
17320 | ||
17321 | /* Is it an anonymous namespace? */ | |
17322 | ||
17323 | *is_anonymous = (name == NULL); | |
17324 | if (*is_anonymous) | |
2b1dbab0 | 17325 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
17326 | |
17327 | return name; | |
d9fa45fe DC |
17328 | } |
17329 | ||
c906108c SS |
17330 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
17331 | the user defined type vector. */ | |
17332 | ||
f792889a | 17333 | static struct type * |
e7c27a73 | 17334 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17335 | { |
518817b3 SM |
17336 | struct gdbarch *gdbarch |
17337 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 17338 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 17339 | struct type *type; |
8b2dbe47 KB |
17340 | struct attribute *attr_byte_size; |
17341 | struct attribute *attr_address_class; | |
17342 | int byte_size, addr_class; | |
7e314c57 JK |
17343 | struct type *target_type; |
17344 | ||
17345 | target_type = die_type (die, cu); | |
c906108c | 17346 | |
7e314c57 JK |
17347 | /* The die_type call above may have already set the type for this DIE. */ |
17348 | type = get_die_type (die, cu); | |
17349 | if (type) | |
17350 | return type; | |
17351 | ||
17352 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17353 | |
e142c38c | 17354 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
17355 | if (attr_byte_size) |
17356 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 17357 | else |
8b2dbe47 KB |
17358 | byte_size = cu_header->addr_size; |
17359 | ||
e142c38c | 17360 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
17361 | if (attr_address_class) |
17362 | addr_class = DW_UNSND (attr_address_class); | |
17363 | else | |
17364 | addr_class = DW_ADDR_none; | |
17365 | ||
17366 | /* If the pointer size or address class is different than the | |
17367 | default, create a type variant marked as such and set the | |
17368 | length accordingly. */ | |
17369 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 17370 | { |
5e2b427d | 17371 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
17372 | { |
17373 | int type_flags; | |
17374 | ||
849957d9 | 17375 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 17376 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
17377 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17378 | == 0); | |
8b2dbe47 KB |
17379 | type = make_type_with_address_space (type, type_flags); |
17380 | } | |
17381 | else if (TYPE_LENGTH (type) != byte_size) | |
17382 | { | |
3e43a32a MS |
17383 | complaint (&symfile_complaints, |
17384 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 17385 | } |
6e70227d | 17386 | else |
9a619af0 MS |
17387 | { |
17388 | /* Should we also complain about unhandled address classes? */ | |
17389 | } | |
c906108c | 17390 | } |
8b2dbe47 KB |
17391 | |
17392 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 17393 | return set_die_type (die, type, cu); |
c906108c SS |
17394 | } |
17395 | ||
17396 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17397 | the user defined type vector. */ | |
17398 | ||
f792889a | 17399 | static struct type * |
e7c27a73 | 17400 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17401 | { |
17402 | struct type *type; | |
17403 | struct type *to_type; | |
17404 | struct type *domain; | |
17405 | ||
e7c27a73 DJ |
17406 | to_type = die_type (die, cu); |
17407 | domain = die_containing_type (die, cu); | |
0d5de010 | 17408 | |
7e314c57 JK |
17409 | /* The calls above may have already set the type for this DIE. */ |
17410 | type = get_die_type (die, cu); | |
17411 | if (type) | |
17412 | return type; | |
17413 | ||
0d5de010 DJ |
17414 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
17415 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
17416 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
17417 | { | |
518817b3 SM |
17418 | struct type *new_type |
17419 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
17420 | |
17421 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
17422 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
17423 | TYPE_VARARGS (to_type)); | |
17424 | type = lookup_methodptr_type (new_type); | |
17425 | } | |
0d5de010 DJ |
17426 | else |
17427 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17428 | |
f792889a | 17429 | return set_die_type (die, type, cu); |
c906108c SS |
17430 | } |
17431 | ||
4297a3f0 | 17432 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17433 | the user defined type vector. */ |
17434 | ||
f792889a | 17435 | static struct type * |
4297a3f0 AV |
17436 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
17437 | enum type_code refcode) | |
c906108c | 17438 | { |
e7c27a73 | 17439 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17440 | struct type *type, *target_type; |
c906108c SS |
17441 | struct attribute *attr; |
17442 | ||
4297a3f0 AV |
17443 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17444 | ||
7e314c57 JK |
17445 | target_type = die_type (die, cu); |
17446 | ||
17447 | /* The die_type call above may have already set the type for this DIE. */ | |
17448 | type = get_die_type (die, cu); | |
17449 | if (type) | |
17450 | return type; | |
17451 | ||
4297a3f0 | 17452 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17453 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17454 | if (attr) |
17455 | { | |
17456 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
17457 | } | |
17458 | else | |
17459 | { | |
107d2387 | 17460 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17461 | } |
f792889a | 17462 | return set_die_type (die, type, cu); |
c906108c SS |
17463 | } |
17464 | ||
cf363f18 MW |
17465 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17466 | outputs DWARF type qualifiers that apply to an array, not the | |
17467 | element type. But GDB relies on the array element type to carry | |
17468 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17469 | specification. */ | |
17470 | ||
17471 | static struct type * | |
17472 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17473 | struct type *base_type, int cnst, int voltl) | |
17474 | { | |
17475 | struct type *el_type, *inner_array; | |
17476 | ||
17477 | base_type = copy_type (base_type); | |
17478 | inner_array = base_type; | |
17479 | ||
17480 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
17481 | { | |
17482 | TYPE_TARGET_TYPE (inner_array) = | |
17483 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17484 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17485 | } | |
17486 | ||
17487 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17488 | cnst |= TYPE_CONST (el_type); | |
17489 | voltl |= TYPE_VOLATILE (el_type); | |
17490 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17491 | ||
17492 | return set_die_type (die, base_type, cu); | |
17493 | } | |
17494 | ||
f792889a | 17495 | static struct type * |
e7c27a73 | 17496 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17497 | { |
f792889a | 17498 | struct type *base_type, *cv_type; |
c906108c | 17499 | |
e7c27a73 | 17500 | base_type = die_type (die, cu); |
7e314c57 JK |
17501 | |
17502 | /* The die_type call above may have already set the type for this DIE. */ | |
17503 | cv_type = get_die_type (die, cu); | |
17504 | if (cv_type) | |
17505 | return cv_type; | |
17506 | ||
2f608a3a KW |
17507 | /* In case the const qualifier is applied to an array type, the element type |
17508 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
17509 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 17510 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17511 | |
f792889a DJ |
17512 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17513 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17514 | } |
17515 | ||
f792889a | 17516 | static struct type * |
e7c27a73 | 17517 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17518 | { |
f792889a | 17519 | struct type *base_type, *cv_type; |
c906108c | 17520 | |
e7c27a73 | 17521 | base_type = die_type (die, cu); |
7e314c57 JK |
17522 | |
17523 | /* The die_type call above may have already set the type for this DIE. */ | |
17524 | cv_type = get_die_type (die, cu); | |
17525 | if (cv_type) | |
17526 | return cv_type; | |
17527 | ||
cf363f18 MW |
17528 | /* In case the volatile qualifier is applied to an array type, the |
17529 | element type is so qualified, not the array type (section 6.7.3 | |
17530 | of C99). */ | |
17531 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
17532 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
17533 | ||
f792889a DJ |
17534 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17535 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17536 | } |
17537 | ||
06d66ee9 TT |
17538 | /* Handle DW_TAG_restrict_type. */ |
17539 | ||
17540 | static struct type * | |
17541 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17542 | { | |
17543 | struct type *base_type, *cv_type; | |
17544 | ||
17545 | base_type = die_type (die, cu); | |
17546 | ||
17547 | /* The die_type call above may have already set the type for this DIE. */ | |
17548 | cv_type = get_die_type (die, cu); | |
17549 | if (cv_type) | |
17550 | return cv_type; | |
17551 | ||
17552 | cv_type = make_restrict_type (base_type); | |
17553 | return set_die_type (die, cv_type, cu); | |
17554 | } | |
17555 | ||
a2c2acaf MW |
17556 | /* Handle DW_TAG_atomic_type. */ |
17557 | ||
17558 | static struct type * | |
17559 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17560 | { | |
17561 | struct type *base_type, *cv_type; | |
17562 | ||
17563 | base_type = die_type (die, cu); | |
17564 | ||
17565 | /* The die_type call above may have already set the type for this DIE. */ | |
17566 | cv_type = get_die_type (die, cu); | |
17567 | if (cv_type) | |
17568 | return cv_type; | |
17569 | ||
17570 | cv_type = make_atomic_type (base_type); | |
17571 | return set_die_type (die, cv_type, cu); | |
17572 | } | |
17573 | ||
c906108c SS |
17574 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17575 | the user defined type vector. It isn't really a user defined type, | |
17576 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17577 | attribute to reference it. */ | |
17578 | ||
f792889a | 17579 | static struct type * |
e7c27a73 | 17580 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17581 | { |
518817b3 | 17582 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 17583 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
17584 | struct type *type, *range_type, *index_type, *char_type; |
17585 | struct attribute *attr; | |
17586 | unsigned int length; | |
17587 | ||
e142c38c | 17588 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
17589 | if (attr) |
17590 | { | |
17591 | length = DW_UNSND (attr); | |
17592 | } | |
17593 | else | |
17594 | { | |
0963b4bd | 17595 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 17596 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
17597 | if (attr) |
17598 | { | |
17599 | length = DW_UNSND (attr); | |
17600 | } | |
17601 | else | |
17602 | { | |
17603 | length = 1; | |
17604 | } | |
c906108c | 17605 | } |
6ccb9162 | 17606 | |
46bf5051 | 17607 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 17608 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
17609 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17610 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17611 | |
f792889a | 17612 | return set_die_type (die, type, cu); |
c906108c SS |
17613 | } |
17614 | ||
4d804846 JB |
17615 | /* Assuming that DIE corresponds to a function, returns nonzero |
17616 | if the function is prototyped. */ | |
17617 | ||
17618 | static int | |
17619 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17620 | { | |
17621 | struct attribute *attr; | |
17622 | ||
17623 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17624 | if (attr && (DW_UNSND (attr) != 0)) | |
17625 | return 1; | |
17626 | ||
17627 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
17628 | is only meaninful for C, but the concept also extends to other | |
17629 | languages that allow unprototyped functions (Eg: Objective C). | |
17630 | For all other languages, assume that functions are always | |
17631 | prototyped. */ | |
17632 | if (cu->language != language_c | |
17633 | && cu->language != language_objc | |
17634 | && cu->language != language_opencl) | |
17635 | return 1; | |
17636 | ||
17637 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17638 | prototyped and unprototyped functions; default to prototyped, | |
17639 | since that is more common in modern code (and RealView warns | |
17640 | about unprototyped functions). */ | |
17641 | if (producer_is_realview (cu->producer)) | |
17642 | return 1; | |
17643 | ||
17644 | return 0; | |
17645 | } | |
17646 | ||
c906108c SS |
17647 | /* Handle DIES due to C code like: |
17648 | ||
17649 | struct foo | |
c5aa993b JM |
17650 | { |
17651 | int (*funcp)(int a, long l); | |
17652 | int b; | |
17653 | }; | |
c906108c | 17654 | |
0963b4bd | 17655 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17656 | |
f792889a | 17657 | static struct type * |
e7c27a73 | 17658 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17659 | { |
518817b3 | 17660 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
17661 | struct type *type; /* Type that this function returns. */ |
17662 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17663 | struct attribute *attr; |
17664 | ||
e7c27a73 | 17665 | type = die_type (die, cu); |
7e314c57 JK |
17666 | |
17667 | /* The die_type call above may have already set the type for this DIE. */ | |
17668 | ftype = get_die_type (die, cu); | |
17669 | if (ftype) | |
17670 | return ftype; | |
17671 | ||
0c8b41f1 | 17672 | ftype = lookup_function_type (type); |
c906108c | 17673 | |
4d804846 | 17674 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17675 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17676 | |
c055b101 CV |
17677 | /* Store the calling convention in the type if it's available in |
17678 | the subroutine die. Otherwise set the calling convention to | |
17679 | the default value DW_CC_normal. */ | |
17680 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
17681 | if (attr) |
17682 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
17683 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
17684 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17685 | else | |
17686 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17687 | |
743649fd MW |
17688 | /* Record whether the function returns normally to its caller or not |
17689 | if the DWARF producer set that information. */ | |
17690 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17691 | if (attr && (DW_UNSND (attr) != 0)) | |
17692 | TYPE_NO_RETURN (ftype) = 1; | |
17693 | ||
76c10ea2 GM |
17694 | /* We need to add the subroutine type to the die immediately so |
17695 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17696 | declared as the same subroutine type. */ |
76c10ea2 | 17697 | set_die_type (die, ftype, cu); |
6e70227d | 17698 | |
639d11d3 | 17699 | if (die->child != NULL) |
c906108c | 17700 | { |
bb5ed363 | 17701 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17702 | struct die_info *child_die; |
8072405b | 17703 | int nparams, iparams; |
c906108c SS |
17704 | |
17705 | /* Count the number of parameters. | |
17706 | FIXME: GDB currently ignores vararg functions, but knows about | |
17707 | vararg member functions. */ | |
8072405b | 17708 | nparams = 0; |
639d11d3 | 17709 | child_die = die->child; |
c906108c SS |
17710 | while (child_die && child_die->tag) |
17711 | { | |
17712 | if (child_die->tag == DW_TAG_formal_parameter) | |
17713 | nparams++; | |
17714 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17715 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
17716 | child_die = sibling_die (child_die); |
17717 | } | |
17718 | ||
17719 | /* Allocate storage for parameters and fill them in. */ | |
17720 | TYPE_NFIELDS (ftype) = nparams; | |
17721 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 17722 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 17723 | |
8072405b JK |
17724 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17725 | even if we error out during the parameters reading below. */ | |
17726 | for (iparams = 0; iparams < nparams; iparams++) | |
17727 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17728 | ||
17729 | iparams = 0; | |
639d11d3 | 17730 | child_die = die->child; |
c906108c SS |
17731 | while (child_die && child_die->tag) |
17732 | { | |
17733 | if (child_die->tag == DW_TAG_formal_parameter) | |
17734 | { | |
3ce3b1ba PA |
17735 | struct type *arg_type; |
17736 | ||
17737 | /* DWARF version 2 has no clean way to discern C++ | |
17738 | static and non-static member functions. G++ helps | |
17739 | GDB by marking the first parameter for non-static | |
17740 | member functions (which is the this pointer) as | |
17741 | artificial. We pass this information to | |
17742 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17743 | ||
17744 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17745 | 4.5 does not yet generate. */ | |
e142c38c | 17746 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
17747 | if (attr) |
17748 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
17749 | else | |
9c37b5ae | 17750 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17751 | arg_type = die_type (child_die, cu); |
17752 | ||
17753 | /* RealView does not mark THIS as const, which the testsuite | |
17754 | expects. GCC marks THIS as const in method definitions, | |
17755 | but not in the class specifications (GCC PR 43053). */ | |
17756 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17757 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17758 | { | |
17759 | int is_this = 0; | |
17760 | struct dwarf2_cu *arg_cu = cu; | |
17761 | const char *name = dwarf2_name (child_die, cu); | |
17762 | ||
17763 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
17764 | if (attr) | |
17765 | { | |
17766 | /* If the compiler emits this, use it. */ | |
17767 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17768 | is_this = 1; | |
17769 | } | |
17770 | else if (name && strcmp (name, "this") == 0) | |
17771 | /* Function definitions will have the argument names. */ | |
17772 | is_this = 1; | |
17773 | else if (name == NULL && iparams == 0) | |
17774 | /* Declarations may not have the names, so like | |
17775 | elsewhere in GDB, assume an artificial first | |
17776 | argument is "this". */ | |
17777 | is_this = 1; | |
17778 | ||
17779 | if (is_this) | |
17780 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17781 | arg_type, 0); | |
17782 | } | |
17783 | ||
17784 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17785 | iparams++; |
17786 | } | |
17787 | child_die = sibling_die (child_die); | |
17788 | } | |
17789 | } | |
17790 | ||
76c10ea2 | 17791 | return ftype; |
c906108c SS |
17792 | } |
17793 | ||
f792889a | 17794 | static struct type * |
e7c27a73 | 17795 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17796 | { |
518817b3 | 17797 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17798 | const char *name = NULL; |
3c8e0968 | 17799 | struct type *this_type, *target_type; |
c906108c | 17800 | |
94af9270 | 17801 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17802 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17803 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17804 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17805 | target_type = die_type (die, cu); |
17806 | if (target_type != this_type) | |
17807 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17808 | else | |
17809 | { | |
17810 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17811 | spec and cause infinite loops in GDB. */ | |
17812 | complaint (&symfile_complaints, | |
17813 | _("Self-referential DW_TAG_typedef " | |
9d8780f0 SM |
17814 | "- DIE at %s [in module %s]"), |
17815 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17816 | TYPE_TARGET_TYPE (this_type) = NULL; |
17817 | } | |
f792889a | 17818 | return this_type; |
c906108c SS |
17819 | } |
17820 | ||
9b790ce7 UW |
17821 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17822 | (which may be different from NAME) to the architecture back-end to allow | |
17823 | it to guess the correct format if necessary. */ | |
17824 | ||
17825 | static struct type * | |
17826 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
17827 | const char *name_hint) | |
17828 | { | |
17829 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
17830 | const struct floatformat **format; | |
17831 | struct type *type; | |
17832 | ||
17833 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17834 | if (format) | |
17835 | type = init_float_type (objfile, bits, name, format); | |
17836 | else | |
77b7c781 | 17837 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17838 | |
17839 | return type; | |
17840 | } | |
17841 | ||
c906108c SS |
17842 | /* Find a representation of a given base type and install |
17843 | it in the TYPE field of the die. */ | |
17844 | ||
f792889a | 17845 | static struct type * |
e7c27a73 | 17846 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17847 | { |
518817b3 | 17848 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
17849 | struct type *type; |
17850 | struct attribute *attr; | |
19f392bc | 17851 | int encoding = 0, bits = 0; |
15d034d0 | 17852 | const char *name; |
c906108c | 17853 | |
e142c38c | 17854 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
17855 | if (attr) |
17856 | { | |
17857 | encoding = DW_UNSND (attr); | |
17858 | } | |
e142c38c | 17859 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17860 | if (attr) |
17861 | { | |
19f392bc | 17862 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
c906108c | 17863 | } |
39cbfefa | 17864 | name = dwarf2_name (die, cu); |
6ccb9162 | 17865 | if (!name) |
c906108c | 17866 | { |
6ccb9162 UW |
17867 | complaint (&symfile_complaints, |
17868 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 17869 | } |
6ccb9162 UW |
17870 | |
17871 | switch (encoding) | |
c906108c | 17872 | { |
6ccb9162 UW |
17873 | case DW_ATE_address: |
17874 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17875 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17876 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17877 | break; |
17878 | case DW_ATE_boolean: | |
19f392bc | 17879 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17880 | break; |
17881 | case DW_ATE_complex_float: | |
9b790ce7 | 17882 | type = dwarf2_init_float_type (objfile, bits / 2, NULL, name); |
19f392bc | 17883 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
17884 | break; |
17885 | case DW_ATE_decimal_float: | |
19f392bc | 17886 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17887 | break; |
17888 | case DW_ATE_float: | |
9b790ce7 | 17889 | type = dwarf2_init_float_type (objfile, bits, name, name); |
6ccb9162 UW |
17890 | break; |
17891 | case DW_ATE_signed: | |
19f392bc | 17892 | type = init_integer_type (objfile, bits, 0, name); |
6ccb9162 UW |
17893 | break; |
17894 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17895 | if (cu->language == language_fortran |
17896 | && name | |
61012eef | 17897 | && startswith (name, "character(")) |
19f392bc UW |
17898 | type = init_character_type (objfile, bits, 1, name); |
17899 | else | |
17900 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 UW |
17901 | break; |
17902 | case DW_ATE_signed_char: | |
6e70227d | 17903 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17904 | || cu->language == language_pascal |
17905 | || cu->language == language_fortran) | |
19f392bc UW |
17906 | type = init_character_type (objfile, bits, 0, name); |
17907 | else | |
17908 | type = init_integer_type (objfile, bits, 0, name); | |
6ccb9162 UW |
17909 | break; |
17910 | case DW_ATE_unsigned_char: | |
868a0084 | 17911 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17912 | || cu->language == language_pascal |
c44af4eb TT |
17913 | || cu->language == language_fortran |
17914 | || cu->language == language_rust) | |
19f392bc UW |
17915 | type = init_character_type (objfile, bits, 1, name); |
17916 | else | |
17917 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 | 17918 | break; |
75079b2b | 17919 | case DW_ATE_UTF: |
53e710ac PA |
17920 | { |
17921 | gdbarch *arch = get_objfile_arch (objfile); | |
17922 | ||
17923 | if (bits == 16) | |
17924 | type = builtin_type (arch)->builtin_char16; | |
17925 | else if (bits == 32) | |
17926 | type = builtin_type (arch)->builtin_char32; | |
17927 | else | |
17928 | { | |
17929 | complaint (&symfile_complaints, | |
17930 | _("unsupported DW_ATE_UTF bit size: '%d'"), | |
17931 | bits); | |
17932 | type = init_integer_type (objfile, bits, 1, name); | |
17933 | } | |
17934 | return set_die_type (die, type, cu); | |
17935 | } | |
75079b2b TT |
17936 | break; |
17937 | ||
6ccb9162 UW |
17938 | default: |
17939 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
17940 | dwarf_type_encoding_name (encoding)); | |
77b7c781 | 17941 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17942 | break; |
c906108c | 17943 | } |
6ccb9162 | 17944 | |
0114d602 | 17945 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17946 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17947 | |
f792889a | 17948 | return set_die_type (die, type, cu); |
c906108c SS |
17949 | } |
17950 | ||
80180f79 SA |
17951 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17952 | resulting value of the attribute into struct bound_prop. | |
17953 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17954 | ||
17955 | static int | |
17956 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
17957 | struct dwarf2_cu *cu, struct dynamic_prop *prop) | |
17958 | { | |
17959 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17960 | struct obstack *obstack |
17961 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 SA |
17962 | |
17963 | if (attr == NULL || prop == NULL) | |
17964 | return 0; | |
17965 | ||
17966 | if (attr_form_is_block (attr)) | |
17967 | { | |
8d749320 | 17968 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
80180f79 SA |
17969 | baton->referenced_type = NULL; |
17970 | baton->locexpr.per_cu = cu->per_cu; | |
17971 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17972 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
17973 | prop->data.baton = baton; | |
17974 | prop->kind = PROP_LOCEXPR; | |
17975 | gdb_assert (prop->data.baton != NULL); | |
17976 | } | |
17977 | else if (attr_form_is_ref (attr)) | |
17978 | { | |
17979 | struct dwarf2_cu *target_cu = cu; | |
17980 | struct die_info *target_die; | |
17981 | struct attribute *target_attr; | |
17982 | ||
17983 | target_die = follow_die_ref (die, attr, &target_cu); | |
17984 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17985 | if (target_attr == NULL) |
17986 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17987 | target_cu); | |
80180f79 SA |
17988 | if (target_attr == NULL) |
17989 | return 0; | |
17990 | ||
df25ebbd | 17991 | switch (target_attr->name) |
80180f79 | 17992 | { |
df25ebbd JB |
17993 | case DW_AT_location: |
17994 | if (attr_form_is_section_offset (target_attr)) | |
17995 | { | |
8d749320 | 17996 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17997 | baton->referenced_type = die_type (target_die, target_cu); |
17998 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); | |
17999 | prop->data.baton = baton; | |
18000 | prop->kind = PROP_LOCLIST; | |
18001 | gdb_assert (prop->data.baton != NULL); | |
18002 | } | |
18003 | else if (attr_form_is_block (target_attr)) | |
18004 | { | |
8d749320 | 18005 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
18006 | baton->referenced_type = die_type (target_die, target_cu); |
18007 | baton->locexpr.per_cu = cu->per_cu; | |
18008 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
18009 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
18010 | prop->data.baton = baton; | |
18011 | prop->kind = PROP_LOCEXPR; | |
18012 | gdb_assert (prop->data.baton != NULL); | |
18013 | } | |
18014 | else | |
18015 | { | |
18016 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
18017 | "dynamic property"); | |
18018 | return 0; | |
18019 | } | |
18020 | break; | |
18021 | case DW_AT_data_member_location: | |
18022 | { | |
18023 | LONGEST offset; | |
18024 | ||
18025 | if (!handle_data_member_location (target_die, target_cu, | |
18026 | &offset)) | |
18027 | return 0; | |
18028 | ||
8d749320 | 18029 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
6ad395a7 JB |
18030 | baton->referenced_type = read_type_die (target_die->parent, |
18031 | target_cu); | |
df25ebbd JB |
18032 | baton->offset_info.offset = offset; |
18033 | baton->offset_info.type = die_type (target_die, target_cu); | |
18034 | prop->data.baton = baton; | |
18035 | prop->kind = PROP_ADDR_OFFSET; | |
18036 | break; | |
18037 | } | |
80180f79 SA |
18038 | } |
18039 | } | |
18040 | else if (attr_form_is_constant (attr)) | |
18041 | { | |
18042 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
18043 | prop->kind = PROP_CONST; | |
18044 | } | |
18045 | else | |
18046 | { | |
18047 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
18048 | dwarf2_name (die, cu)); | |
18049 | return 0; | |
18050 | } | |
18051 | ||
18052 | return 1; | |
18053 | } | |
18054 | ||
a02abb62 JB |
18055 | /* Read the given DW_AT_subrange DIE. */ |
18056 | ||
f792889a | 18057 | static struct type * |
a02abb62 JB |
18058 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
18059 | { | |
4c9ad8c2 | 18060 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
18061 | struct type *range_type; |
18062 | struct attribute *attr; | |
729efb13 | 18063 | struct dynamic_prop low, high; |
4fae6e18 | 18064 | int low_default_is_valid; |
c451ebe5 | 18065 | int high_bound_is_count = 0; |
15d034d0 | 18066 | const char *name; |
43bbcdc2 | 18067 | LONGEST negative_mask; |
e77813c8 | 18068 | |
4c9ad8c2 TT |
18069 | orig_base_type = die_type (die, cu); |
18070 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
18071 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
18072 | creating the range type, but we use the result of check_typedef | |
18073 | when examining properties of the type. */ | |
18074 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 18075 | |
7e314c57 JK |
18076 | /* The die_type call above may have already set the type for this DIE. */ |
18077 | range_type = get_die_type (die, cu); | |
18078 | if (range_type) | |
18079 | return range_type; | |
18080 | ||
729efb13 SA |
18081 | low.kind = PROP_CONST; |
18082 | high.kind = PROP_CONST; | |
18083 | high.data.const_val = 0; | |
18084 | ||
4fae6e18 JK |
18085 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
18086 | omitting DW_AT_lower_bound. */ | |
18087 | switch (cu->language) | |
6e70227d | 18088 | { |
4fae6e18 JK |
18089 | case language_c: |
18090 | case language_cplus: | |
729efb13 | 18091 | low.data.const_val = 0; |
4fae6e18 JK |
18092 | low_default_is_valid = 1; |
18093 | break; | |
18094 | case language_fortran: | |
729efb13 | 18095 | low.data.const_val = 1; |
4fae6e18 JK |
18096 | low_default_is_valid = 1; |
18097 | break; | |
18098 | case language_d: | |
4fae6e18 | 18099 | case language_objc: |
c44af4eb | 18100 | case language_rust: |
729efb13 | 18101 | low.data.const_val = 0; |
4fae6e18 JK |
18102 | low_default_is_valid = (cu->header.version >= 4); |
18103 | break; | |
18104 | case language_ada: | |
18105 | case language_m2: | |
18106 | case language_pascal: | |
729efb13 | 18107 | low.data.const_val = 1; |
4fae6e18 JK |
18108 | low_default_is_valid = (cu->header.version >= 4); |
18109 | break; | |
18110 | default: | |
729efb13 | 18111 | low.data.const_val = 0; |
4fae6e18 JK |
18112 | low_default_is_valid = 0; |
18113 | break; | |
a02abb62 JB |
18114 | } |
18115 | ||
e142c38c | 18116 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 18117 | if (attr) |
11c1ba78 | 18118 | attr_to_dynamic_prop (attr, die, cu, &low); |
4fae6e18 JK |
18119 | else if (!low_default_is_valid) |
18120 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
9d8780f0 SM |
18121 | "- DIE at %s [in module %s]"), |
18122 | sect_offset_str (die->sect_off), | |
518817b3 | 18123 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 18124 | |
e142c38c | 18125 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
80180f79 | 18126 | if (!attr_to_dynamic_prop (attr, die, cu, &high)) |
e77813c8 PM |
18127 | { |
18128 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
c451ebe5 | 18129 | if (attr_to_dynamic_prop (attr, die, cu, &high)) |
6b662e19 | 18130 | { |
c451ebe5 SA |
18131 | /* If bounds are constant do the final calculation here. */ |
18132 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
18133 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
18134 | else | |
18135 | high_bound_is_count = 1; | |
c2ff108b | 18136 | } |
e77813c8 PM |
18137 | } |
18138 | ||
18139 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
18140 | without specifying a base type. | |
18141 | In that case, the base type must be set to the type of | |
18142 | the lower bound, upper bound or count, in that order, if any of these | |
18143 | three attributes references an object that has a type. | |
18144 | If no base type is found, the Dwarf-2 specifications say that | |
18145 | a signed integer type of size equal to the size of an address should | |
18146 | be used. | |
18147 | For the following C code: `extern char gdb_int [];' | |
18148 | GCC produces an empty range DIE. | |
18149 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 18150 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
18151 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
18152 | { | |
518817b3 | 18153 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e77813c8 PM |
18154 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
18155 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
18156 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
18157 | ||
18158 | /* Test "int", "long int", and "long long int" objfile types, | |
18159 | and select the first one having a size above or equal to the | |
18160 | architecture address size. */ | |
18161 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
18162 | base_type = int_type; | |
18163 | else | |
18164 | { | |
18165 | int_type = objfile_type (objfile)->builtin_long; | |
18166 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
18167 | base_type = int_type; | |
18168 | else | |
18169 | { | |
18170 | int_type = objfile_type (objfile)->builtin_long_long; | |
18171 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
18172 | base_type = int_type; | |
18173 | } | |
18174 | } | |
18175 | } | |
a02abb62 | 18176 | |
dbb9c2b1 JB |
18177 | /* Normally, the DWARF producers are expected to use a signed |
18178 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
18179 | But this is unfortunately not always the case, as witnessed | |
18180 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
18181 | is used instead. To work around that ambiguity, we treat | |
18182 | the bounds as signed, and thus sign-extend their values, when | |
18183 | the base type is signed. */ | |
6e70227d | 18184 | negative_mask = |
66c6502d | 18185 | -((LONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
18186 | if (low.kind == PROP_CONST |
18187 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
18188 | low.data.const_val |= negative_mask; | |
18189 | if (high.kind == PROP_CONST | |
18190 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
18191 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 18192 | |
729efb13 | 18193 | range_type = create_range_type (NULL, orig_base_type, &low, &high); |
a02abb62 | 18194 | |
c451ebe5 SA |
18195 | if (high_bound_is_count) |
18196 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
18197 | ||
c2ff108b JK |
18198 | /* Ada expects an empty array on no boundary attributes. */ |
18199 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 18200 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 18201 | |
39cbfefa DJ |
18202 | name = dwarf2_name (die, cu); |
18203 | if (name) | |
18204 | TYPE_NAME (range_type) = name; | |
6e70227d | 18205 | |
e142c38c | 18206 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
18207 | if (attr) |
18208 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
18209 | ||
7e314c57 JK |
18210 | set_die_type (die, range_type, cu); |
18211 | ||
18212 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
18213 | set_descriptive_type (range_type, die, cu); |
18214 | ||
7e314c57 | 18215 | return range_type; |
a02abb62 | 18216 | } |
6e70227d | 18217 | |
f792889a | 18218 | static struct type * |
81a17f79 JB |
18219 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
18220 | { | |
18221 | struct type *type; | |
81a17f79 | 18222 | |
518817b3 SM |
18223 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
18224 | NULL); | |
0114d602 | 18225 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 18226 | |
74a2f8ff JB |
18227 | /* In Ada, an unspecified type is typically used when the description |
18228 | of the type is defered to a different unit. When encountering | |
18229 | such a type, we treat it as a stub, and try to resolve it later on, | |
18230 | when needed. */ | |
18231 | if (cu->language == language_ada) | |
18232 | TYPE_STUB (type) = 1; | |
18233 | ||
f792889a | 18234 | return set_die_type (die, type, cu); |
81a17f79 | 18235 | } |
a02abb62 | 18236 | |
639d11d3 DC |
18237 | /* Read a single die and all its descendents. Set the die's sibling |
18238 | field to NULL; set other fields in the die correctly, and set all | |
18239 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
18240 | location of the info_ptr after reading all of those dies. PARENT | |
18241 | is the parent of the die in question. */ | |
18242 | ||
18243 | static struct die_info * | |
dee91e82 | 18244 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
18245 | const gdb_byte *info_ptr, |
18246 | const gdb_byte **new_info_ptr, | |
dee91e82 | 18247 | struct die_info *parent) |
639d11d3 DC |
18248 | { |
18249 | struct die_info *die; | |
d521ce57 | 18250 | const gdb_byte *cur_ptr; |
639d11d3 DC |
18251 | int has_children; |
18252 | ||
bf6af496 | 18253 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
18254 | if (die == NULL) |
18255 | { | |
18256 | *new_info_ptr = cur_ptr; | |
18257 | return NULL; | |
18258 | } | |
93311388 | 18259 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
18260 | |
18261 | if (has_children) | |
bf6af496 | 18262 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
18263 | else |
18264 | { | |
18265 | die->child = NULL; | |
18266 | *new_info_ptr = cur_ptr; | |
18267 | } | |
18268 | ||
18269 | die->sibling = NULL; | |
18270 | die->parent = parent; | |
18271 | return die; | |
18272 | } | |
18273 | ||
18274 | /* Read a die, all of its descendents, and all of its siblings; set | |
18275 | all of the fields of all of the dies correctly. Arguments are as | |
18276 | in read_die_and_children. */ | |
18277 | ||
18278 | static struct die_info * | |
bf6af496 | 18279 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
18280 | const gdb_byte *info_ptr, |
18281 | const gdb_byte **new_info_ptr, | |
bf6af496 | 18282 | struct die_info *parent) |
639d11d3 DC |
18283 | { |
18284 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 18285 | const gdb_byte *cur_ptr; |
639d11d3 | 18286 | |
c906108c | 18287 | cur_ptr = info_ptr; |
639d11d3 DC |
18288 | first_die = last_sibling = NULL; |
18289 | ||
18290 | while (1) | |
c906108c | 18291 | { |
639d11d3 | 18292 | struct die_info *die |
dee91e82 | 18293 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 18294 | |
1d325ec1 | 18295 | if (die == NULL) |
c906108c | 18296 | { |
639d11d3 DC |
18297 | *new_info_ptr = cur_ptr; |
18298 | return first_die; | |
c906108c | 18299 | } |
1d325ec1 DJ |
18300 | |
18301 | if (!first_die) | |
18302 | first_die = die; | |
c906108c | 18303 | else |
1d325ec1 DJ |
18304 | last_sibling->sibling = die; |
18305 | ||
18306 | last_sibling = die; | |
c906108c | 18307 | } |
c906108c SS |
18308 | } |
18309 | ||
bf6af496 DE |
18310 | /* Read a die, all of its descendents, and all of its siblings; set |
18311 | all of the fields of all of the dies correctly. Arguments are as | |
18312 | in read_die_and_children. | |
18313 | This the main entry point for reading a DIE and all its children. */ | |
18314 | ||
18315 | static struct die_info * | |
18316 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
18317 | const gdb_byte *info_ptr, |
18318 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
18319 | struct die_info *parent) |
18320 | { | |
18321 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
18322 | new_info_ptr, parent); | |
18323 | ||
b4f54984 | 18324 | if (dwarf_die_debug) |
bf6af496 DE |
18325 | { |
18326 | fprintf_unfiltered (gdb_stdlog, | |
18327 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18328 | get_section_name (reader->die_section), |
bf6af496 DE |
18329 | (unsigned) (info_ptr - reader->die_section->buffer), |
18330 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18331 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
18332 | } |
18333 | ||
18334 | return die; | |
18335 | } | |
18336 | ||
3019eac3 DE |
18337 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18338 | attributes. | |
18339 | The caller is responsible for filling in the extra attributes | |
18340 | and updating (*DIEP)->num_attrs. | |
18341 | Set DIEP to point to a newly allocated die with its information, | |
18342 | except for its child, sibling, and parent fields. | |
18343 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 18344 | |
d521ce57 | 18345 | static const gdb_byte * |
3019eac3 | 18346 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18347 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 18348 | int *has_children, int num_extra_attrs) |
93311388 | 18349 | { |
b64f50a1 | 18350 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
18351 | struct abbrev_info *abbrev; |
18352 | struct die_info *die; | |
18353 | struct dwarf2_cu *cu = reader->cu; | |
18354 | bfd *abfd = reader->abfd; | |
18355 | ||
9c541725 | 18356 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18357 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18358 | info_ptr += bytes_read; | |
18359 | if (!abbrev_number) | |
18360 | { | |
18361 | *diep = NULL; | |
18362 | *has_children = 0; | |
18363 | return info_ptr; | |
18364 | } | |
18365 | ||
685af9cd | 18366 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18367 | if (!abbrev) |
348e048f DE |
18368 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18369 | abbrev_number, | |
18370 | bfd_get_filename (abfd)); | |
18371 | ||
3019eac3 | 18372 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18373 | die->sect_off = sect_off; |
93311388 DE |
18374 | die->tag = abbrev->tag; |
18375 | die->abbrev = abbrev_number; | |
18376 | ||
3019eac3 DE |
18377 | /* Make the result usable. |
18378 | The caller needs to update num_attrs after adding the extra | |
18379 | attributes. */ | |
93311388 DE |
18380 | die->num_attrs = abbrev->num_attrs; |
18381 | ||
18382 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
18383 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
18384 | info_ptr); | |
93311388 DE |
18385 | |
18386 | *diep = die; | |
18387 | *has_children = abbrev->has_children; | |
18388 | return info_ptr; | |
18389 | } | |
18390 | ||
3019eac3 DE |
18391 | /* Read a die and all its attributes. |
18392 | Set DIEP to point to a newly allocated die with its information, | |
18393 | except for its child, sibling, and parent fields. | |
18394 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
18395 | ||
d521ce57 | 18396 | static const gdb_byte * |
3019eac3 | 18397 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 18398 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
18399 | int *has_children) |
18400 | { | |
d521ce57 | 18401 | const gdb_byte *result; |
bf6af496 DE |
18402 | |
18403 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
18404 | ||
b4f54984 | 18405 | if (dwarf_die_debug) |
bf6af496 DE |
18406 | { |
18407 | fprintf_unfiltered (gdb_stdlog, | |
18408 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18409 | get_section_name (reader->die_section), |
bf6af496 DE |
18410 | (unsigned) (info_ptr - reader->die_section->buffer), |
18411 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18412 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18413 | } |
18414 | ||
18415 | return result; | |
3019eac3 | 18416 | } |
433df2d4 DE |
18417 | \f |
18418 | /* Abbreviation tables. | |
3019eac3 | 18419 | |
433df2d4 | 18420 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
18421 | stored in a separate .debug_abbrev section. Before we read any |
18422 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
18423 | in a hash table. */ |
18424 | ||
18425 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
18426 | ||
685af9cd TT |
18427 | struct abbrev_info * |
18428 | abbrev_table::alloc_abbrev () | |
433df2d4 DE |
18429 | { |
18430 | struct abbrev_info *abbrev; | |
18431 | ||
685af9cd | 18432 | abbrev = XOBNEW (&abbrev_obstack, struct abbrev_info); |
433df2d4 | 18433 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8d749320 | 18434 | |
433df2d4 DE |
18435 | return abbrev; |
18436 | } | |
18437 | ||
18438 | /* Add an abbreviation to the table. */ | |
c906108c | 18439 | |
685af9cd TT |
18440 | void |
18441 | abbrev_table::add_abbrev (unsigned int abbrev_number, | |
18442 | struct abbrev_info *abbrev) | |
433df2d4 DE |
18443 | { |
18444 | unsigned int hash_number; | |
18445 | ||
18446 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 YQ |
18447 | abbrev->next = m_abbrevs[hash_number]; |
18448 | m_abbrevs[hash_number] = abbrev; | |
433df2d4 | 18449 | } |
dee91e82 | 18450 | |
433df2d4 DE |
18451 | /* Look up an abbrev in the table. |
18452 | Returns NULL if the abbrev is not found. */ | |
18453 | ||
685af9cd TT |
18454 | struct abbrev_info * |
18455 | abbrev_table::lookup_abbrev (unsigned int abbrev_number) | |
c906108c | 18456 | { |
433df2d4 DE |
18457 | unsigned int hash_number; |
18458 | struct abbrev_info *abbrev; | |
18459 | ||
18460 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 | 18461 | abbrev = m_abbrevs[hash_number]; |
433df2d4 DE |
18462 | |
18463 | while (abbrev) | |
18464 | { | |
18465 | if (abbrev->number == abbrev_number) | |
18466 | return abbrev; | |
18467 | abbrev = abbrev->next; | |
18468 | } | |
18469 | return NULL; | |
18470 | } | |
18471 | ||
18472 | /* Read in an abbrev table. */ | |
18473 | ||
685af9cd | 18474 | static abbrev_table_up |
ed2dc618 SM |
18475 | abbrev_table_read_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18476 | struct dwarf2_section_info *section, | |
9c541725 | 18477 | sect_offset sect_off) |
433df2d4 DE |
18478 | { |
18479 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 18480 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 18481 | const gdb_byte *abbrev_ptr; |
c906108c SS |
18482 | struct abbrev_info *cur_abbrev; |
18483 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 18484 | unsigned int abbrev_form; |
f3dd6933 DJ |
18485 | struct attr_abbrev *cur_attrs; |
18486 | unsigned int allocated_attrs; | |
c906108c | 18487 | |
685af9cd | 18488 | abbrev_table_up abbrev_table (new struct abbrev_table (sect_off)); |
c906108c | 18489 | |
433df2d4 | 18490 | dwarf2_read_section (objfile, section); |
9c541725 | 18491 | abbrev_ptr = section->buffer + to_underlying (sect_off); |
c906108c SS |
18492 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18493 | abbrev_ptr += bytes_read; | |
18494 | ||
f3dd6933 | 18495 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8d749320 | 18496 | cur_attrs = XNEWVEC (struct attr_abbrev, allocated_attrs); |
6e70227d | 18497 | |
0963b4bd | 18498 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
18499 | while (abbrev_number) |
18500 | { | |
685af9cd | 18501 | cur_abbrev = abbrev_table->alloc_abbrev (); |
c906108c SS |
18502 | |
18503 | /* read in abbrev header */ | |
18504 | cur_abbrev->number = abbrev_number; | |
aead7601 SM |
18505 | cur_abbrev->tag |
18506 | = (enum dwarf_tag) read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
c906108c SS |
18507 | abbrev_ptr += bytes_read; |
18508 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
18509 | abbrev_ptr += 1; | |
18510 | ||
18511 | /* now read in declarations */ | |
22d2f3ab | 18512 | for (;;) |
c906108c | 18513 | { |
43988095 JK |
18514 | LONGEST implicit_const; |
18515 | ||
22d2f3ab JK |
18516 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18517 | abbrev_ptr += bytes_read; | |
18518 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18519 | abbrev_ptr += bytes_read; | |
43988095 JK |
18520 | if (abbrev_form == DW_FORM_implicit_const) |
18521 | { | |
18522 | implicit_const = read_signed_leb128 (abfd, abbrev_ptr, | |
18523 | &bytes_read); | |
18524 | abbrev_ptr += bytes_read; | |
18525 | } | |
18526 | else | |
18527 | { | |
18528 | /* Initialize it due to a false compiler warning. */ | |
18529 | implicit_const = -1; | |
18530 | } | |
22d2f3ab JK |
18531 | |
18532 | if (abbrev_name == 0) | |
18533 | break; | |
18534 | ||
f3dd6933 | 18535 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 18536 | { |
f3dd6933 DJ |
18537 | allocated_attrs += ATTR_ALLOC_CHUNK; |
18538 | cur_attrs | |
224c3ddb | 18539 | = XRESIZEVEC (struct attr_abbrev, cur_attrs, allocated_attrs); |
c906108c | 18540 | } |
ae038cb0 | 18541 | |
aead7601 SM |
18542 | cur_attrs[cur_abbrev->num_attrs].name |
18543 | = (enum dwarf_attribute) abbrev_name; | |
22d2f3ab | 18544 | cur_attrs[cur_abbrev->num_attrs].form |
aead7601 | 18545 | = (enum dwarf_form) abbrev_form; |
43988095 | 18546 | cur_attrs[cur_abbrev->num_attrs].implicit_const = implicit_const; |
22d2f3ab | 18547 | ++cur_abbrev->num_attrs; |
c906108c SS |
18548 | } |
18549 | ||
8d749320 SM |
18550 | cur_abbrev->attrs = |
18551 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct attr_abbrev, | |
18552 | cur_abbrev->num_attrs); | |
f3dd6933 DJ |
18553 | memcpy (cur_abbrev->attrs, cur_attrs, |
18554 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
18555 | ||
685af9cd | 18556 | abbrev_table->add_abbrev (abbrev_number, cur_abbrev); |
c906108c SS |
18557 | |
18558 | /* Get next abbreviation. | |
18559 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
18560 | always properly terminated with an abbrev number of 0. |
18561 | Exit loop if we encounter an abbreviation which we have | |
18562 | already read (which means we are about to read the abbreviations | |
18563 | for the next compile unit) or if the end of the abbreviation | |
18564 | table is reached. */ | |
433df2d4 | 18565 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
18566 | break; |
18567 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18568 | abbrev_ptr += bytes_read; | |
685af9cd | 18569 | if (abbrev_table->lookup_abbrev (abbrev_number) != NULL) |
c906108c SS |
18570 | break; |
18571 | } | |
f3dd6933 DJ |
18572 | |
18573 | xfree (cur_attrs); | |
433df2d4 | 18574 | return abbrev_table; |
c906108c SS |
18575 | } |
18576 | ||
72bf9492 DJ |
18577 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18578 | symbol for. */ | |
18579 | ||
18580 | static int | |
18581 | is_type_tag_for_partial (int tag) | |
18582 | { | |
18583 | switch (tag) | |
18584 | { | |
18585 | #if 0 | |
18586 | /* Some types that would be reasonable to generate partial symbols for, | |
18587 | that we don't at present. */ | |
18588 | case DW_TAG_array_type: | |
18589 | case DW_TAG_file_type: | |
18590 | case DW_TAG_ptr_to_member_type: | |
18591 | case DW_TAG_set_type: | |
18592 | case DW_TAG_string_type: | |
18593 | case DW_TAG_subroutine_type: | |
18594 | #endif | |
18595 | case DW_TAG_base_type: | |
18596 | case DW_TAG_class_type: | |
680b30c7 | 18597 | case DW_TAG_interface_type: |
72bf9492 DJ |
18598 | case DW_TAG_enumeration_type: |
18599 | case DW_TAG_structure_type: | |
18600 | case DW_TAG_subrange_type: | |
18601 | case DW_TAG_typedef: | |
18602 | case DW_TAG_union_type: | |
18603 | return 1; | |
18604 | default: | |
18605 | return 0; | |
18606 | } | |
18607 | } | |
18608 | ||
18609 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18610 | ||
18611 | static struct partial_die_info * | |
dee91e82 | 18612 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18613 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18614 | { |
dee91e82 | 18615 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 18616 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 18617 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18618 | unsigned int bytes_read; |
5afb4e99 | 18619 | unsigned int load_all = 0; |
72bf9492 DJ |
18620 | int nesting_level = 1; |
18621 | ||
18622 | parent_die = NULL; | |
18623 | last_die = NULL; | |
18624 | ||
7adf1e79 DE |
18625 | gdb_assert (cu->per_cu != NULL); |
18626 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18627 | load_all = 1; |
18628 | ||
72bf9492 DJ |
18629 | cu->partial_dies |
18630 | = htab_create_alloc_ex (cu->header.length / 12, | |
18631 | partial_die_hash, | |
18632 | partial_die_eq, | |
18633 | NULL, | |
18634 | &cu->comp_unit_obstack, | |
18635 | hashtab_obstack_allocate, | |
18636 | dummy_obstack_deallocate); | |
18637 | ||
72bf9492 DJ |
18638 | while (1) |
18639 | { | |
685af9cd | 18640 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18641 | |
18642 | /* A NULL abbrev means the end of a series of children. */ | |
18643 | if (abbrev == NULL) | |
18644 | { | |
18645 | if (--nesting_level == 0) | |
cd9983dd YQ |
18646 | return first_die; |
18647 | ||
72bf9492 DJ |
18648 | info_ptr += bytes_read; |
18649 | last_die = parent_die; | |
18650 | parent_die = parent_die->die_parent; | |
18651 | continue; | |
18652 | } | |
18653 | ||
98bfdba5 PA |
18654 | /* Check for template arguments. We never save these; if |
18655 | they're seen, we just mark the parent, and go on our way. */ | |
18656 | if (parent_die != NULL | |
18657 | && cu->language == language_cplus | |
18658 | && (abbrev->tag == DW_TAG_template_type_param | |
18659 | || abbrev->tag == DW_TAG_template_value_param)) | |
18660 | { | |
18661 | parent_die->has_template_arguments = 1; | |
18662 | ||
18663 | if (!load_all) | |
18664 | { | |
18665 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18666 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18667 | continue; |
18668 | } | |
18669 | } | |
18670 | ||
0d99eb77 | 18671 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18672 | Skip their other children. */ |
18673 | if (!load_all | |
18674 | && cu->language == language_cplus | |
18675 | && parent_die != NULL | |
18676 | && parent_die->tag == DW_TAG_subprogram) | |
18677 | { | |
dee91e82 | 18678 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18679 | continue; |
18680 | } | |
18681 | ||
5afb4e99 DJ |
18682 | /* Check whether this DIE is interesting enough to save. Normally |
18683 | we would not be interested in members here, but there may be | |
18684 | later variables referencing them via DW_AT_specification (for | |
18685 | static members). */ | |
18686 | if (!load_all | |
18687 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18688 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18689 | && abbrev->tag != DW_TAG_enumerator |
18690 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18691 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18692 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18693 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18694 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18695 | && abbrev->tag != DW_TAG_module |
95554aad | 18696 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18697 | && abbrev->tag != DW_TAG_imported_unit |
18698 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18699 | { |
18700 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18701 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18702 | continue; |
18703 | } | |
18704 | ||
6f06d47b YQ |
18705 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18706 | abbrev); | |
cd9983dd | 18707 | |
48fbe735 | 18708 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18709 | |
18710 | /* This two-pass algorithm for processing partial symbols has a | |
18711 | high cost in cache pressure. Thus, handle some simple cases | |
18712 | here which cover the majority of C partial symbols. DIEs | |
18713 | which neither have specification tags in them, nor could have | |
18714 | specification tags elsewhere pointing at them, can simply be | |
18715 | processed and discarded. | |
18716 | ||
18717 | This segment is also optional; scan_partial_symbols and | |
18718 | add_partial_symbol will handle these DIEs if we chain | |
18719 | them in normally. When compilers which do not emit large | |
18720 | quantities of duplicate debug information are more common, | |
18721 | this code can probably be removed. */ | |
18722 | ||
18723 | /* Any complete simple types at the top level (pretty much all | |
18724 | of them, for a language without namespaces), can be processed | |
18725 | directly. */ | |
18726 | if (parent_die == NULL | |
cd9983dd YQ |
18727 | && pdi.has_specification == 0 |
18728 | && pdi.is_declaration == 0 | |
18729 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18730 | || pdi.tag == DW_TAG_base_type | |
18731 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18732 | { |
cd9983dd YQ |
18733 | if (building_psymtab && pdi.name != NULL) |
18734 | add_psymbol_to_list (pdi.name, strlen (pdi.name), 0, | |
72bf9492 | 18735 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 | 18736 | &objfile->static_psymbols, |
1762568f | 18737 | 0, cu->language, objfile); |
cd9983dd | 18738 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18739 | continue; |
18740 | } | |
18741 | ||
d8228535 JK |
18742 | /* The exception for DW_TAG_typedef with has_children above is |
18743 | a workaround of GCC PR debug/47510. In the case of this complaint | |
18744 | type_name_no_tag_or_error will error on such types later. | |
18745 | ||
18746 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18747 | it could not find the child DIEs referenced later, this is checked | |
18748 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18749 | ||
cd9983dd | 18750 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
d8228535 JK |
18751 | complaint (&symfile_complaints, |
18752 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
9d8780f0 | 18753 | "- DIE at %s [in module %s]"), |
cd9983dd | 18754 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18755 | |
72bf9492 DJ |
18756 | /* If we're at the second level, and we're an enumerator, and |
18757 | our parent has no specification (meaning possibly lives in a | |
18758 | namespace elsewhere), then we can add the partial symbol now | |
18759 | instead of queueing it. */ | |
cd9983dd | 18760 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18761 | && parent_die != NULL |
18762 | && parent_die->die_parent == NULL | |
18763 | && parent_die->tag == DW_TAG_enumeration_type | |
18764 | && parent_die->has_specification == 0) | |
18765 | { | |
cd9983dd | 18766 | if (pdi.name == NULL) |
3e43a32a MS |
18767 | complaint (&symfile_complaints, |
18768 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 18769 | else if (building_psymtab) |
cd9983dd | 18770 | add_psymbol_to_list (pdi.name, strlen (pdi.name), 0, |
72bf9492 | 18771 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 18772 | cu->language == language_cplus |
bb5ed363 DE |
18773 | ? &objfile->global_psymbols |
18774 | : &objfile->static_psymbols, | |
1762568f | 18775 | 0, cu->language, objfile); |
72bf9492 | 18776 | |
cd9983dd | 18777 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18778 | continue; |
18779 | } | |
18780 | ||
cd9983dd | 18781 | struct partial_die_info *part_die |
6f06d47b | 18782 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18783 | |
72bf9492 DJ |
18784 | /* We'll save this DIE so link it in. */ |
18785 | part_die->die_parent = parent_die; | |
18786 | part_die->die_sibling = NULL; | |
18787 | part_die->die_child = NULL; | |
18788 | ||
18789 | if (last_die && last_die == parent_die) | |
18790 | last_die->die_child = part_die; | |
18791 | else if (last_die) | |
18792 | last_die->die_sibling = part_die; | |
18793 | ||
18794 | last_die = part_die; | |
18795 | ||
18796 | if (first_die == NULL) | |
18797 | first_die = part_die; | |
18798 | ||
18799 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18800 | find interesting need to be in the hash table, because we | |
18801 | also have the parent/sibling/child chains; only those that we | |
18802 | might refer to by offset later during partial symbol reading. | |
18803 | ||
18804 | For now this means things that might have be the target of a | |
18805 | DW_AT_specification, DW_AT_abstract_origin, or | |
18806 | DW_AT_extension. DW_AT_extension will refer only to | |
18807 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18808 | many things under the function DIE, but we do not recurse | |
18809 | into function DIEs during partial symbol reading) and | |
18810 | possibly variables as well; DW_AT_specification refers to | |
18811 | declarations. Declarations ought to have the DW_AT_declaration | |
18812 | flag. It happens that GCC forgets to put it in sometimes, but | |
18813 | only for functions, not for types. | |
18814 | ||
18815 | Adding more things than necessary to the hash table is harmless | |
18816 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18817 | wasted time in find_partial_die, when we reread the compilation |
18818 | unit with load_all_dies set. */ | |
72bf9492 | 18819 | |
5afb4e99 | 18820 | if (load_all |
72929c62 | 18821 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18822 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18823 | || abbrev->tag == DW_TAG_variable |
18824 | || abbrev->tag == DW_TAG_namespace | |
18825 | || part_die->is_declaration) | |
18826 | { | |
18827 | void **slot; | |
18828 | ||
18829 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18830 | to_underlying (part_die->sect_off), |
18831 | INSERT); | |
72bf9492 DJ |
18832 | *slot = part_die; |
18833 | } | |
18834 | ||
72bf9492 | 18835 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18836 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18837 | languages we have to, so that we can get at method physnames |
18838 | to infer fully qualified class names, for DW_AT_specification, | |
18839 | and for C++ template arguments. For C++, we also look one level | |
18840 | inside functions to find template arguments (if the name of the | |
18841 | function does not already contain the template arguments). | |
bc30ff58 JB |
18842 | |
18843 | For Ada, we need to scan the children of subprograms and lexical | |
18844 | blocks as well because Ada allows the definition of nested | |
18845 | entities that could be interesting for the debugger, such as | |
18846 | nested subprograms for instance. */ | |
72bf9492 | 18847 | if (last_die->has_children |
5afb4e99 DJ |
18848 | && (load_all |
18849 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18850 | || last_die->tag == DW_TAG_module |
72bf9492 | 18851 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18852 | || (cu->language == language_cplus |
18853 | && last_die->tag == DW_TAG_subprogram | |
18854 | && (last_die->name == NULL | |
18855 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18856 | || (cu->language != language_c |
18857 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18858 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18859 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
18860 | || last_die->tag == DW_TAG_union_type)) |
18861 | || (cu->language == language_ada | |
18862 | && (last_die->tag == DW_TAG_subprogram | |
18863 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18864 | { |
18865 | nesting_level++; | |
18866 | parent_die = last_die; | |
18867 | continue; | |
18868 | } | |
18869 | ||
18870 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18871 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18872 | |
18873 | /* Back to the top, do it again. */ | |
18874 | } | |
18875 | } | |
18876 | ||
6f06d47b YQ |
18877 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18878 | struct abbrev_info *abbrev) | |
18879 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18880 | { | |
18881 | } | |
18882 | ||
35cc7ed7 YQ |
18883 | /* Read a minimal amount of information into the minimal die structure. |
18884 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18885 | |
48fbe735 YQ |
18886 | const gdb_byte * |
18887 | partial_die_info::read (const struct die_reader_specs *reader, | |
18888 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18889 | { |
dee91e82 | 18890 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18891 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18892 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 18893 | unsigned int i; |
c5aa993b | 18894 | int has_low_pc_attr = 0; |
c906108c | 18895 | int has_high_pc_attr = 0; |
91da1414 | 18896 | int high_pc_relative = 0; |
c906108c | 18897 | |
fd0a254f | 18898 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18899 | { |
48fbe735 YQ |
18900 | struct attribute attr; |
18901 | ||
fd0a254f | 18902 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
c906108c SS |
18903 | |
18904 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 18905 | partial symbol table. */ |
c906108c SS |
18906 | switch (attr.name) |
18907 | { | |
18908 | case DW_AT_name: | |
48fbe735 | 18909 | switch (tag) |
71c25dea TT |
18910 | { |
18911 | case DW_TAG_compile_unit: | |
95554aad | 18912 | case DW_TAG_partial_unit: |
348e048f | 18913 | case DW_TAG_type_unit: |
71c25dea TT |
18914 | /* Compilation units have a DW_AT_name that is a filename, not |
18915 | a source language identifier. */ | |
18916 | case DW_TAG_enumeration_type: | |
18917 | case DW_TAG_enumerator: | |
18918 | /* These tags always have simple identifiers already; no need | |
18919 | to canonicalize them. */ | |
48fbe735 | 18920 | name = DW_STRING (&attr); |
71c25dea TT |
18921 | break; |
18922 | default: | |
48fbe735 YQ |
18923 | { |
18924 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18925 | ||
18926 | name | |
18927 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
18928 | &objfile->per_bfd->storage_obstack); | |
18929 | } | |
71c25dea TT |
18930 | break; |
18931 | } | |
c906108c | 18932 | break; |
31ef98ae | 18933 | case DW_AT_linkage_name: |
c906108c | 18934 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18935 | /* Note that both forms of linkage name might appear. We |
18936 | assume they will be the same, and we only store the last | |
18937 | one we see. */ | |
94af9270 | 18938 | if (cu->language == language_ada) |
48fbe735 YQ |
18939 | name = DW_STRING (&attr); |
18940 | linkage_name = DW_STRING (&attr); | |
c906108c SS |
18941 | break; |
18942 | case DW_AT_low_pc: | |
18943 | has_low_pc_attr = 1; | |
48fbe735 | 18944 | lowpc = attr_value_as_address (&attr); |
c906108c SS |
18945 | break; |
18946 | case DW_AT_high_pc: | |
18947 | has_high_pc_attr = 1; | |
48fbe735 | 18948 | highpc = attr_value_as_address (&attr); |
31aa7e4e JB |
18949 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) |
18950 | high_pc_relative = 1; | |
c906108c SS |
18951 | break; |
18952 | case DW_AT_location: | |
0963b4bd | 18953 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
18954 | if (attr_form_is_block (&attr)) |
18955 | { | |
48fbe735 | 18956 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18957 | } |
3690dd37 | 18958 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 18959 | { |
4d3c2250 | 18960 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18961 | } |
18962 | else | |
18963 | { | |
4d3c2250 KB |
18964 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18965 | "partial symbol information"); | |
8e19ed76 | 18966 | } |
c906108c | 18967 | break; |
c906108c | 18968 | case DW_AT_external: |
48fbe735 | 18969 | is_external = DW_UNSND (&attr); |
c906108c SS |
18970 | break; |
18971 | case DW_AT_declaration: | |
48fbe735 | 18972 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18973 | break; |
18974 | case DW_AT_type: | |
48fbe735 | 18975 | has_type = 1; |
c906108c SS |
18976 | break; |
18977 | case DW_AT_abstract_origin: | |
18978 | case DW_AT_specification: | |
72bf9492 | 18979 | case DW_AT_extension: |
48fbe735 YQ |
18980 | has_specification = 1; |
18981 | spec_offset = dwarf2_get_ref_die_offset (&attr); | |
18982 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 | 18983 | || cu->per_cu->is_dwz); |
c906108c SS |
18984 | break; |
18985 | case DW_AT_sibling: | |
18986 | /* Ignore absolute siblings, they might point outside of | |
18987 | the current compile unit. */ | |
18988 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
18989 | complaint (&symfile_complaints, |
18990 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 18991 | else |
b9502d3f | 18992 | { |
48fbe735 | 18993 | const gdb_byte *buffer = reader->buffer; |
9c541725 PA |
18994 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
18995 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
18996 | |
18997 | if (sibling_ptr < info_ptr) | |
18998 | complaint (&symfile_complaints, | |
18999 | _("DW_AT_sibling points backwards")); | |
22869d73 KS |
19000 | else if (sibling_ptr > reader->buffer_end) |
19001 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f | 19002 | else |
48fbe735 | 19003 | sibling = sibling_ptr; |
b9502d3f | 19004 | } |
c906108c | 19005 | break; |
fa4028e9 | 19006 | case DW_AT_byte_size: |
48fbe735 | 19007 | has_byte_size = 1; |
fa4028e9 | 19008 | break; |
ff908ebf | 19009 | case DW_AT_const_value: |
48fbe735 | 19010 | has_const_value = 1; |
ff908ebf | 19011 | break; |
68511cec CES |
19012 | case DW_AT_calling_convention: |
19013 | /* DWARF doesn't provide a way to identify a program's source-level | |
19014 | entry point. DW_AT_calling_convention attributes are only meant | |
19015 | to describe functions' calling conventions. | |
19016 | ||
19017 | However, because it's a necessary piece of information in | |
0c1b455e TT |
19018 | Fortran, and before DWARF 4 DW_CC_program was the only |
19019 | piece of debugging information whose definition refers to | |
19020 | a 'main program' at all, several compilers marked Fortran | |
19021 | main programs with DW_CC_program --- even when those | |
19022 | functions use the standard calling conventions. | |
19023 | ||
19024 | Although DWARF now specifies a way to provide this | |
19025 | information, we support this practice for backward | |
19026 | compatibility. */ | |
68511cec | 19027 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 19028 | && cu->language == language_fortran) |
48fbe735 | 19029 | main_subprogram = 1; |
68511cec | 19030 | break; |
481860b3 GB |
19031 | case DW_AT_inline: |
19032 | if (DW_UNSND (&attr) == DW_INL_inlined | |
19033 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 19034 | may_be_inlined = 1; |
481860b3 | 19035 | break; |
95554aad TT |
19036 | |
19037 | case DW_AT_import: | |
48fbe735 | 19038 | if (tag == DW_TAG_imported_unit) |
36586728 | 19039 | { |
48fbe735 YQ |
19040 | d.sect_off = dwarf2_get_ref_die_offset (&attr); |
19041 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 TT |
19042 | || cu->per_cu->is_dwz); |
19043 | } | |
95554aad TT |
19044 | break; |
19045 | ||
0c1b455e | 19046 | case DW_AT_main_subprogram: |
48fbe735 | 19047 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
19048 | break; |
19049 | ||
c906108c SS |
19050 | default: |
19051 | break; | |
19052 | } | |
19053 | } | |
19054 | ||
91da1414 | 19055 | if (high_pc_relative) |
48fbe735 | 19056 | highpc += lowpc; |
91da1414 | 19057 | |
9373cf26 JK |
19058 | if (has_low_pc_attr && has_high_pc_attr) |
19059 | { | |
19060 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
19061 | eliminate duplicate copies of functions and vtables and such. | |
19062 | The linker will arbitrarily choose one and discard the others. | |
19063 | The AT_*_pc values for such functions refer to local labels in | |
19064 | these sections. If the section from that file was discarded, the | |
19065 | labels are not in the output, so the relocs get a value of 0. | |
19066 | If this is a discarded function, mark the pc bounds as invalid, | |
19067 | so that GDB will ignore it. */ | |
48fbe735 | 19068 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 19069 | { |
48fbe735 | 19070 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 19071 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
19072 | |
19073 | complaint (&symfile_complaints, | |
19074 | _("DW_AT_low_pc %s is zero " | |
9d8780f0 | 19075 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19076 | paddress (gdbarch, lowpc), |
19077 | sect_offset_str (sect_off), | |
9d8780f0 | 19078 | objfile_name (objfile)); |
9373cf26 JK |
19079 | } |
19080 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 19081 | else if (lowpc >= highpc) |
9373cf26 | 19082 | { |
48fbe735 | 19083 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 19084 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
19085 | |
19086 | complaint (&symfile_complaints, | |
19087 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
9d8780f0 | 19088 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19089 | paddress (gdbarch, lowpc), |
19090 | paddress (gdbarch, highpc), | |
19091 | sect_offset_str (sect_off), | |
9c541725 | 19092 | objfile_name (objfile)); |
9373cf26 JK |
19093 | } |
19094 | else | |
48fbe735 | 19095 | has_pc_info = 1; |
9373cf26 | 19096 | } |
85cbf3d3 | 19097 | |
c906108c SS |
19098 | return info_ptr; |
19099 | } | |
19100 | ||
72bf9492 DJ |
19101 | /* Find a cached partial DIE at OFFSET in CU. */ |
19102 | ||
d590ff25 YQ |
19103 | struct partial_die_info * |
19104 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
19105 | { |
19106 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 19107 | struct partial_die_info part_die (sect_off); |
72bf9492 | 19108 | |
9a3c8263 | 19109 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 19110 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 19111 | to_underlying (sect_off))); |
72bf9492 | 19112 | |
72bf9492 DJ |
19113 | return lookup_die; |
19114 | } | |
19115 | ||
348e048f DE |
19116 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
19117 | except in the case of .debug_types DIEs which do not reference | |
19118 | outside their CU (they do however referencing other types via | |
55f1336d | 19119 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
19120 | |
19121 | static struct partial_die_info * | |
9c541725 | 19122 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 19123 | { |
518817b3 SM |
19124 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19125 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 19126 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
19127 | struct dwarf2_per_cu_data *per_cu = NULL; |
19128 | struct partial_die_info *pd = NULL; | |
72bf9492 | 19129 | |
36586728 | 19130 | if (offset_in_dwz == cu->per_cu->is_dwz |
9c541725 | 19131 | && offset_in_cu_p (&cu->header, sect_off)) |
5afb4e99 | 19132 | { |
d590ff25 | 19133 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
19134 | if (pd != NULL) |
19135 | return pd; | |
0d99eb77 DE |
19136 | /* We missed recording what we needed. |
19137 | Load all dies and try again. */ | |
19138 | per_cu = cu->per_cu; | |
5afb4e99 | 19139 | } |
0d99eb77 DE |
19140 | else |
19141 | { | |
19142 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 19143 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 19144 | { |
9d8780f0 SM |
19145 | error (_("Dwarf Error: Type Unit at offset %s contains" |
19146 | " external reference to offset %s [in module %s].\n"), | |
19147 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
19148 | bfd_get_filename (objfile->obfd)); |
19149 | } | |
9c541725 | 19150 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 19151 | dwarf2_per_objfile); |
72bf9492 | 19152 | |
0d99eb77 DE |
19153 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
19154 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 19155 | |
0d99eb77 | 19156 | per_cu->cu->last_used = 0; |
d590ff25 | 19157 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 19158 | } |
5afb4e99 | 19159 | |
dee91e82 DE |
19160 | /* If we didn't find it, and not all dies have been loaded, |
19161 | load them all and try again. */ | |
19162 | ||
5afb4e99 DJ |
19163 | if (pd == NULL && per_cu->load_all_dies == 0) |
19164 | { | |
5afb4e99 | 19165 | per_cu->load_all_dies = 1; |
fd820528 DE |
19166 | |
19167 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
19168 | THIS_CU->cu may already be in use. So we can't just free it and | |
19169 | replace its DIEs with the ones we read in. Instead, we leave those | |
19170 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
19171 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
19172 | set. */ | |
dee91e82 | 19173 | load_partial_comp_unit (per_cu); |
5afb4e99 | 19174 | |
d590ff25 | 19175 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
19176 | } |
19177 | ||
19178 | if (pd == NULL) | |
19179 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 19180 | _("could not find partial DIE %s " |
3e43a32a | 19181 | "in cache [from module %s]\n"), |
9d8780f0 | 19182 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
5afb4e99 | 19183 | return pd; |
72bf9492 DJ |
19184 | } |
19185 | ||
abc72ce4 DE |
19186 | /* See if we can figure out if the class lives in a namespace. We do |
19187 | this by looking for a member function; its demangled name will | |
19188 | contain namespace info, if there is any. */ | |
19189 | ||
19190 | static void | |
19191 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
19192 | struct dwarf2_cu *cu) | |
19193 | { | |
19194 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
19195 | what template types look like, because the demangler | |
19196 | frequently doesn't give the same name as the debug info. We | |
19197 | could fix this by only using the demangled name to get the | |
19198 | prefix (but see comment in read_structure_type). */ | |
19199 | ||
19200 | struct partial_die_info *real_pdi; | |
19201 | struct partial_die_info *child_pdi; | |
19202 | ||
19203 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
19204 | we should not do this. We'll prepend the parent's fully qualified | |
19205 | name when we create the partial symbol. */ | |
19206 | ||
19207 | real_pdi = struct_pdi; | |
19208 | while (real_pdi->has_specification) | |
36586728 TT |
19209 | real_pdi = find_partial_die (real_pdi->spec_offset, |
19210 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
19211 | |
19212 | if (real_pdi->die_parent != NULL) | |
19213 | return; | |
19214 | ||
19215 | for (child_pdi = struct_pdi->die_child; | |
19216 | child_pdi != NULL; | |
19217 | child_pdi = child_pdi->die_sibling) | |
19218 | { | |
19219 | if (child_pdi->tag == DW_TAG_subprogram | |
19220 | && child_pdi->linkage_name != NULL) | |
19221 | { | |
19222 | char *actual_class_name | |
19223 | = language_class_name_from_physname (cu->language_defn, | |
19224 | child_pdi->linkage_name); | |
19225 | if (actual_class_name != NULL) | |
19226 | { | |
518817b3 | 19227 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 | 19228 | struct_pdi->name |
224c3ddb | 19229 | = ((const char *) |
e3b94546 | 19230 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
19231 | actual_class_name, |
19232 | strlen (actual_class_name))); | |
abc72ce4 DE |
19233 | xfree (actual_class_name); |
19234 | } | |
19235 | break; | |
19236 | } | |
19237 | } | |
19238 | } | |
19239 | ||
52356b79 YQ |
19240 | void |
19241 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 19242 | { |
abc72ce4 DE |
19243 | /* Once we've fixed up a die, there's no point in doing so again. |
19244 | This also avoids a memory leak if we were to call | |
19245 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 19246 | if (fixup_called) |
abc72ce4 DE |
19247 | return; |
19248 | ||
72bf9492 DJ |
19249 | /* If we found a reference attribute and the DIE has no name, try |
19250 | to find a name in the referred to DIE. */ | |
19251 | ||
52356b79 | 19252 | if (name == NULL && has_specification) |
72bf9492 DJ |
19253 | { |
19254 | struct partial_die_info *spec_die; | |
72bf9492 | 19255 | |
52356b79 | 19256 | spec_die = find_partial_die (spec_offset, spec_is_dwz, cu); |
72bf9492 | 19257 | |
52356b79 | 19258 | spec_die->fixup (cu); |
72bf9492 DJ |
19259 | |
19260 | if (spec_die->name) | |
19261 | { | |
52356b79 | 19262 | name = spec_die->name; |
72bf9492 DJ |
19263 | |
19264 | /* Copy DW_AT_external attribute if it is set. */ | |
19265 | if (spec_die->is_external) | |
52356b79 | 19266 | is_external = spec_die->is_external; |
72bf9492 DJ |
19267 | } |
19268 | } | |
19269 | ||
19270 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 | 19271 | |
52356b79 YQ |
19272 | if (name == NULL && tag == DW_TAG_namespace) |
19273 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 19274 | |
abc72ce4 DE |
19275 | /* If there is no parent die to provide a namespace, and there are |
19276 | children, see if we can determine the namespace from their linkage | |
122d1940 | 19277 | name. */ |
abc72ce4 | 19278 | if (cu->language == language_cplus |
518817b3 SM |
19279 | && !VEC_empty (dwarf2_section_info_def, |
19280 | cu->per_cu->dwarf2_per_objfile->types) | |
52356b79 YQ |
19281 | && die_parent == NULL |
19282 | && has_children | |
19283 | && (tag == DW_TAG_class_type | |
19284 | || tag == DW_TAG_structure_type | |
19285 | || tag == DW_TAG_union_type)) | |
19286 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 19287 | |
53832f31 TT |
19288 | /* GCC might emit a nameless struct or union that has a linkage |
19289 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
19290 | if (name == NULL |
19291 | && (tag == DW_TAG_class_type | |
19292 | || tag == DW_TAG_interface_type | |
19293 | || tag == DW_TAG_structure_type | |
19294 | || tag == DW_TAG_union_type) | |
19295 | && linkage_name != NULL) | |
53832f31 TT |
19296 | { |
19297 | char *demangled; | |
19298 | ||
52356b79 | 19299 | demangled = gdb_demangle (linkage_name, DMGL_TYPES); |
53832f31 TT |
19300 | if (demangled) |
19301 | { | |
96408a79 SA |
19302 | const char *base; |
19303 | ||
19304 | /* Strip any leading namespaces/classes, keep only the base name. | |
19305 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
19306 | base = strrchr (demangled, ':'); | |
19307 | if (base && base > demangled && base[-1] == ':') | |
19308 | base++; | |
19309 | else | |
19310 | base = demangled; | |
19311 | ||
518817b3 | 19312 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
52356b79 | 19313 | name |
224c3ddb | 19314 | = ((const char *) |
e3b94546 | 19315 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 19316 | base, strlen (base))); |
53832f31 TT |
19317 | xfree (demangled); |
19318 | } | |
19319 | } | |
19320 | ||
52356b79 | 19321 | fixup_called = 1; |
72bf9492 DJ |
19322 | } |
19323 | ||
a8329558 | 19324 | /* Read an attribute value described by an attribute form. */ |
c906108c | 19325 | |
d521ce57 | 19326 | static const gdb_byte * |
dee91e82 DE |
19327 | read_attribute_value (const struct die_reader_specs *reader, |
19328 | struct attribute *attr, unsigned form, | |
43988095 | 19329 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 19330 | { |
dee91e82 | 19331 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
19332 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19333 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 19334 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 19335 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 19336 | bfd *abfd = reader->abfd; |
e7c27a73 | 19337 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19338 | unsigned int bytes_read; |
19339 | struct dwarf_block *blk; | |
19340 | ||
aead7601 | 19341 | attr->form = (enum dwarf_form) form; |
a8329558 | 19342 | switch (form) |
c906108c | 19343 | { |
c906108c | 19344 | case DW_FORM_ref_addr: |
ae411497 | 19345 | if (cu->header.version == 2) |
4568ecf9 | 19346 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 19347 | else |
4568ecf9 DE |
19348 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
19349 | &cu->header, &bytes_read); | |
ae411497 TT |
19350 | info_ptr += bytes_read; |
19351 | break; | |
36586728 TT |
19352 | case DW_FORM_GNU_ref_alt: |
19353 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19354 | info_ptr += bytes_read; | |
19355 | break; | |
ae411497 | 19356 | case DW_FORM_addr: |
e7c27a73 | 19357 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 19358 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 19359 | info_ptr += bytes_read; |
c906108c SS |
19360 | break; |
19361 | case DW_FORM_block2: | |
7b5a2f43 | 19362 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19363 | blk->size = read_2_bytes (abfd, info_ptr); |
19364 | info_ptr += 2; | |
19365 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19366 | info_ptr += blk->size; | |
19367 | DW_BLOCK (attr) = blk; | |
19368 | break; | |
19369 | case DW_FORM_block4: | |
7b5a2f43 | 19370 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19371 | blk->size = read_4_bytes (abfd, info_ptr); |
19372 | info_ptr += 4; | |
19373 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19374 | info_ptr += blk->size; | |
19375 | DW_BLOCK (attr) = blk; | |
19376 | break; | |
19377 | case DW_FORM_data2: | |
19378 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
19379 | info_ptr += 2; | |
19380 | break; | |
19381 | case DW_FORM_data4: | |
19382 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
19383 | info_ptr += 4; | |
19384 | break; | |
19385 | case DW_FORM_data8: | |
19386 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
19387 | info_ptr += 8; | |
19388 | break; | |
0224619f JK |
19389 | case DW_FORM_data16: |
19390 | blk = dwarf_alloc_block (cu); | |
19391 | blk->size = 16; | |
19392 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19393 | info_ptr += 16; | |
19394 | DW_BLOCK (attr) = blk; | |
19395 | break; | |
2dc7f7b3 TT |
19396 | case DW_FORM_sec_offset: |
19397 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19398 | info_ptr += bytes_read; | |
19399 | break; | |
c906108c | 19400 | case DW_FORM_string: |
9b1c24c8 | 19401 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 19402 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
19403 | info_ptr += bytes_read; |
19404 | break; | |
4bdf3d34 | 19405 | case DW_FORM_strp: |
36586728 TT |
19406 | if (!cu->per_cu->is_dwz) |
19407 | { | |
ed2dc618 SM |
19408 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
19409 | abfd, info_ptr, cu_header, | |
36586728 TT |
19410 | &bytes_read); |
19411 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19412 | info_ptr += bytes_read; | |
19413 | break; | |
19414 | } | |
19415 | /* FALLTHROUGH */ | |
43988095 JK |
19416 | case DW_FORM_line_strp: |
19417 | if (!cu->per_cu->is_dwz) | |
19418 | { | |
ed2dc618 SM |
19419 | DW_STRING (attr) = read_indirect_line_string (dwarf2_per_objfile, |
19420 | abfd, info_ptr, | |
43988095 JK |
19421 | cu_header, &bytes_read); |
19422 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19423 | info_ptr += bytes_read; | |
19424 | break; | |
19425 | } | |
19426 | /* FALLTHROUGH */ | |
36586728 TT |
19427 | case DW_FORM_GNU_strp_alt: |
19428 | { | |
ed2dc618 | 19429 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19430 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, |
19431 | &bytes_read); | |
19432 | ||
ed2dc618 SM |
19433 | DW_STRING (attr) = read_indirect_string_from_dwz (objfile, |
19434 | dwz, str_offset); | |
36586728 TT |
19435 | DW_STRING_IS_CANONICAL (attr) = 0; |
19436 | info_ptr += bytes_read; | |
19437 | } | |
4bdf3d34 | 19438 | break; |
2dc7f7b3 | 19439 | case DW_FORM_exprloc: |
c906108c | 19440 | case DW_FORM_block: |
7b5a2f43 | 19441 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19442 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19443 | info_ptr += bytes_read; | |
19444 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19445 | info_ptr += blk->size; | |
19446 | DW_BLOCK (attr) = blk; | |
19447 | break; | |
19448 | case DW_FORM_block1: | |
7b5a2f43 | 19449 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19450 | blk->size = read_1_byte (abfd, info_ptr); |
19451 | info_ptr += 1; | |
19452 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19453 | info_ptr += blk->size; | |
19454 | DW_BLOCK (attr) = blk; | |
19455 | break; | |
19456 | case DW_FORM_data1: | |
19457 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19458 | info_ptr += 1; | |
19459 | break; | |
19460 | case DW_FORM_flag: | |
19461 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19462 | info_ptr += 1; | |
19463 | break; | |
2dc7f7b3 TT |
19464 | case DW_FORM_flag_present: |
19465 | DW_UNSND (attr) = 1; | |
19466 | break; | |
c906108c SS |
19467 | case DW_FORM_sdata: |
19468 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19469 | info_ptr += bytes_read; | |
19470 | break; | |
19471 | case DW_FORM_udata: | |
19472 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19473 | info_ptr += bytes_read; | |
19474 | break; | |
19475 | case DW_FORM_ref1: | |
9c541725 | 19476 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19477 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19478 | info_ptr += 1; |
19479 | break; | |
19480 | case DW_FORM_ref2: | |
9c541725 | 19481 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19482 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19483 | info_ptr += 2; |
19484 | break; | |
19485 | case DW_FORM_ref4: | |
9c541725 | 19486 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19487 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19488 | info_ptr += 4; |
19489 | break; | |
613e1657 | 19490 | case DW_FORM_ref8: |
9c541725 | 19491 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19492 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19493 | info_ptr += 8; |
19494 | break; | |
55f1336d | 19495 | case DW_FORM_ref_sig8: |
ac9ec31b | 19496 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19497 | info_ptr += 8; |
19498 | break; | |
c906108c | 19499 | case DW_FORM_ref_udata: |
9c541725 | 19500 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19501 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19502 | info_ptr += bytes_read; |
19503 | break; | |
c906108c | 19504 | case DW_FORM_indirect: |
a8329558 KW |
19505 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19506 | info_ptr += bytes_read; | |
43988095 JK |
19507 | if (form == DW_FORM_implicit_const) |
19508 | { | |
19509 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19510 | info_ptr += bytes_read; | |
19511 | } | |
19512 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
19513 | info_ptr); | |
19514 | break; | |
19515 | case DW_FORM_implicit_const: | |
19516 | DW_SND (attr) = implicit_const; | |
a8329558 | 19517 | break; |
3019eac3 DE |
19518 | case DW_FORM_GNU_addr_index: |
19519 | if (reader->dwo_file == NULL) | |
19520 | { | |
19521 | /* For now flag a hard error. | |
19522 | Later we can turn this into a complaint. */ | |
19523 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19524 | dwarf_form_name (form), | |
19525 | bfd_get_filename (abfd)); | |
19526 | } | |
19527 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
19528 | info_ptr += bytes_read; | |
19529 | break; | |
19530 | case DW_FORM_GNU_str_index: | |
19531 | if (reader->dwo_file == NULL) | |
19532 | { | |
19533 | /* For now flag a hard error. | |
19534 | Later we can turn this into a complaint if warranted. */ | |
19535 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19536 | dwarf_form_name (form), | |
19537 | bfd_get_filename (abfd)); | |
19538 | } | |
19539 | { | |
19540 | ULONGEST str_index = | |
19541 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19542 | ||
342587c4 | 19543 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 DE |
19544 | DW_STRING_IS_CANONICAL (attr) = 0; |
19545 | info_ptr += bytes_read; | |
19546 | } | |
19547 | break; | |
c906108c | 19548 | default: |
8a3fe4f8 | 19549 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19550 | dwarf_form_name (form), |
19551 | bfd_get_filename (abfd)); | |
c906108c | 19552 | } |
28e94949 | 19553 | |
36586728 | 19554 | /* Super hack. */ |
7771576e | 19555 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
19556 | attr->form = DW_FORM_GNU_ref_alt; |
19557 | ||
28e94949 JB |
19558 | /* We have seen instances where the compiler tried to emit a byte |
19559 | size attribute of -1 which ended up being encoded as an unsigned | |
19560 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19561 | an object of this size seems pretty unlikely so we can relatively | |
19562 | safely treat these cases as if the size attribute was invalid and | |
19563 | treat them as zero by default. */ | |
19564 | if (attr->name == DW_AT_byte_size | |
19565 | && form == DW_FORM_data4 | |
19566 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19567 | { |
19568 | complaint | |
19569 | (&symfile_complaints, | |
43bbcdc2 PH |
19570 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
19571 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
19572 | DW_UNSND (attr) = 0; |
19573 | } | |
28e94949 | 19574 | |
c906108c SS |
19575 | return info_ptr; |
19576 | } | |
19577 | ||
a8329558 KW |
19578 | /* Read an attribute described by an abbreviated attribute. */ |
19579 | ||
d521ce57 | 19580 | static const gdb_byte * |
dee91e82 DE |
19581 | read_attribute (const struct die_reader_specs *reader, |
19582 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 19583 | const gdb_byte *info_ptr) |
a8329558 KW |
19584 | { |
19585 | attr->name = abbrev->name; | |
43988095 JK |
19586 | return read_attribute_value (reader, attr, abbrev->form, |
19587 | abbrev->implicit_const, info_ptr); | |
a8329558 KW |
19588 | } |
19589 | ||
0963b4bd | 19590 | /* Read dwarf information from a buffer. */ |
c906108c SS |
19591 | |
19592 | static unsigned int | |
a1855c1d | 19593 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19594 | { |
fe1b8b76 | 19595 | return bfd_get_8 (abfd, buf); |
c906108c SS |
19596 | } |
19597 | ||
19598 | static int | |
a1855c1d | 19599 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19600 | { |
fe1b8b76 | 19601 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
19602 | } |
19603 | ||
19604 | static unsigned int | |
a1855c1d | 19605 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19606 | { |
fe1b8b76 | 19607 | return bfd_get_16 (abfd, buf); |
c906108c SS |
19608 | } |
19609 | ||
21ae7a4d | 19610 | static int |
a1855c1d | 19611 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19612 | { |
19613 | return bfd_get_signed_16 (abfd, buf); | |
19614 | } | |
19615 | ||
c906108c | 19616 | static unsigned int |
a1855c1d | 19617 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19618 | { |
fe1b8b76 | 19619 | return bfd_get_32 (abfd, buf); |
c906108c SS |
19620 | } |
19621 | ||
21ae7a4d | 19622 | static int |
a1855c1d | 19623 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19624 | { |
19625 | return bfd_get_signed_32 (abfd, buf); | |
19626 | } | |
19627 | ||
93311388 | 19628 | static ULONGEST |
a1855c1d | 19629 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19630 | { |
fe1b8b76 | 19631 | return bfd_get_64 (abfd, buf); |
c906108c SS |
19632 | } |
19633 | ||
19634 | static CORE_ADDR | |
d521ce57 | 19635 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 19636 | unsigned int *bytes_read) |
c906108c | 19637 | { |
e7c27a73 | 19638 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19639 | CORE_ADDR retval = 0; |
19640 | ||
107d2387 | 19641 | if (cu_header->signed_addr_p) |
c906108c | 19642 | { |
107d2387 AC |
19643 | switch (cu_header->addr_size) |
19644 | { | |
19645 | case 2: | |
fe1b8b76 | 19646 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
19647 | break; |
19648 | case 4: | |
fe1b8b76 | 19649 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
19650 | break; |
19651 | case 8: | |
fe1b8b76 | 19652 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
19653 | break; |
19654 | default: | |
8e65ff28 | 19655 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 19656 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 19657 | bfd_get_filename (abfd)); |
107d2387 AC |
19658 | } |
19659 | } | |
19660 | else | |
19661 | { | |
19662 | switch (cu_header->addr_size) | |
19663 | { | |
19664 | case 2: | |
fe1b8b76 | 19665 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
19666 | break; |
19667 | case 4: | |
fe1b8b76 | 19668 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
19669 | break; |
19670 | case 8: | |
fe1b8b76 | 19671 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
19672 | break; |
19673 | default: | |
8e65ff28 | 19674 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
19675 | _("read_address: bad switch, " |
19676 | "unsigned [in module %s]"), | |
659b0389 | 19677 | bfd_get_filename (abfd)); |
107d2387 | 19678 | } |
c906108c | 19679 | } |
64367e0a | 19680 | |
107d2387 AC |
19681 | *bytes_read = cu_header->addr_size; |
19682 | return retval; | |
c906108c SS |
19683 | } |
19684 | ||
f7ef9339 | 19685 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
19686 | specification allows the initial length to take up either 4 bytes |
19687 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
19688 | bytes describe the length and all offsets will be 8 bytes in length | |
19689 | instead of 4. | |
19690 | ||
f7ef9339 KB |
19691 | An older, non-standard 64-bit format is also handled by this |
19692 | function. The older format in question stores the initial length | |
19693 | as an 8-byte quantity without an escape value. Lengths greater | |
19694 | than 2^32 aren't very common which means that the initial 4 bytes | |
19695 | is almost always zero. Since a length value of zero doesn't make | |
19696 | sense for the 32-bit format, this initial zero can be considered to | |
19697 | be an escape value which indicates the presence of the older 64-bit | |
19698 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
19699 | greater than 4GB. If it becomes necessary to handle lengths |
19700 | somewhat larger than 4GB, we could allow other small values (such | |
19701 | as the non-sensical values of 1, 2, and 3) to also be used as | |
19702 | escape values indicating the presence of the old format. | |
f7ef9339 | 19703 | |
917c78fc MK |
19704 | The value returned via bytes_read should be used to increment the |
19705 | relevant pointer after calling read_initial_length(). | |
c764a876 | 19706 | |
613e1657 KB |
19707 | [ Note: read_initial_length() and read_offset() are based on the |
19708 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 19709 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
19710 | from: |
19711 | ||
f7ef9339 | 19712 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 19713 | |
613e1657 KB |
19714 | This document is only a draft and is subject to change. (So beware.) |
19715 | ||
f7ef9339 | 19716 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
19717 | determined empirically by examining 64-bit ELF files produced by |
19718 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
19719 | |
19720 | - Kevin, July 16, 2002 | |
613e1657 KB |
19721 | ] */ |
19722 | ||
19723 | static LONGEST | |
d521ce57 | 19724 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 19725 | { |
fe1b8b76 | 19726 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 19727 | |
dd373385 | 19728 | if (length == 0xffffffff) |
613e1657 | 19729 | { |
fe1b8b76 | 19730 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 19731 | *bytes_read = 12; |
613e1657 | 19732 | } |
dd373385 | 19733 | else if (length == 0) |
f7ef9339 | 19734 | { |
dd373385 | 19735 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 19736 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 19737 | *bytes_read = 8; |
f7ef9339 | 19738 | } |
613e1657 KB |
19739 | else |
19740 | { | |
19741 | *bytes_read = 4; | |
613e1657 KB |
19742 | } |
19743 | ||
c764a876 DE |
19744 | return length; |
19745 | } | |
dd373385 | 19746 | |
c764a876 DE |
19747 | /* Cover function for read_initial_length. |
19748 | Returns the length of the object at BUF, and stores the size of the | |
19749 | initial length in *BYTES_READ and stores the size that offsets will be in | |
19750 | *OFFSET_SIZE. | |
19751 | If the initial length size is not equivalent to that specified in | |
19752 | CU_HEADER then issue a complaint. | |
19753 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 19754 | |
c764a876 | 19755 | static LONGEST |
d521ce57 | 19756 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
19757 | const struct comp_unit_head *cu_header, |
19758 | unsigned int *bytes_read, | |
19759 | unsigned int *offset_size) | |
19760 | { | |
19761 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
19762 | ||
19763 | gdb_assert (cu_header->initial_length_size == 4 | |
19764 | || cu_header->initial_length_size == 8 | |
19765 | || cu_header->initial_length_size == 12); | |
19766 | ||
19767 | if (cu_header->initial_length_size != *bytes_read) | |
19768 | complaint (&symfile_complaints, | |
19769 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 19770 | |
c764a876 | 19771 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 19772 | return length; |
613e1657 KB |
19773 | } |
19774 | ||
19775 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 19776 | given by cu_header->offset_size. */ |
613e1657 KB |
19777 | |
19778 | static LONGEST | |
d521ce57 TT |
19779 | read_offset (bfd *abfd, const gdb_byte *buf, |
19780 | const struct comp_unit_head *cu_header, | |
891d2f0b | 19781 | unsigned int *bytes_read) |
c764a876 DE |
19782 | { |
19783 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 19784 | |
c764a876 DE |
19785 | *bytes_read = cu_header->offset_size; |
19786 | return offset; | |
19787 | } | |
19788 | ||
19789 | /* Read an offset from the data stream. */ | |
19790 | ||
19791 | static LONGEST | |
d521ce57 | 19792 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
19793 | { |
19794 | LONGEST retval = 0; | |
19795 | ||
c764a876 | 19796 | switch (offset_size) |
613e1657 KB |
19797 | { |
19798 | case 4: | |
fe1b8b76 | 19799 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
19800 | break; |
19801 | case 8: | |
fe1b8b76 | 19802 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
19803 | break; |
19804 | default: | |
8e65ff28 | 19805 | internal_error (__FILE__, __LINE__, |
c764a876 | 19806 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 19807 | bfd_get_filename (abfd)); |
613e1657 KB |
19808 | } |
19809 | ||
917c78fc | 19810 | return retval; |
613e1657 KB |
19811 | } |
19812 | ||
d521ce57 TT |
19813 | static const gdb_byte * |
19814 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
19815 | { |
19816 | /* If the size of a host char is 8 bits, we can return a pointer | |
19817 | to the buffer, otherwise we have to copy the data to a buffer | |
19818 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19819 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 19820 | return buf; |
c906108c SS |
19821 | } |
19822 | ||
d521ce57 TT |
19823 | static const char * |
19824 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
19825 | unsigned int *bytes_read_ptr) | |
c906108c SS |
19826 | { |
19827 | /* If the size of a host char is 8 bits, we can return a pointer | |
19828 | to the string, otherwise we have to copy the string to a buffer | |
19829 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19830 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
19831 | if (*buf == '\0') |
19832 | { | |
19833 | *bytes_read_ptr = 1; | |
19834 | return NULL; | |
19835 | } | |
d521ce57 TT |
19836 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
19837 | return (const char *) buf; | |
4bdf3d34 JJ |
19838 | } |
19839 | ||
43988095 JK |
19840 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
19841 | reporting strings FORM_NAME and SECT_NAME. */ | |
19842 | ||
d521ce57 | 19843 | static const char * |
ed2dc618 SM |
19844 | read_indirect_string_at_offset_from (struct objfile *objfile, |
19845 | bfd *abfd, LONGEST str_offset, | |
43988095 JK |
19846 | struct dwarf2_section_info *sect, |
19847 | const char *form_name, | |
19848 | const char *sect_name) | |
19849 | { | |
ed2dc618 | 19850 | dwarf2_read_section (objfile, sect); |
43988095 JK |
19851 | if (sect->buffer == NULL) |
19852 | error (_("%s used without %s section [in module %s]"), | |
19853 | form_name, sect_name, bfd_get_filename (abfd)); | |
19854 | if (str_offset >= sect->size) | |
19855 | error (_("%s pointing outside of %s section [in module %s]"), | |
19856 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 19857 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 19858 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 19859 | return NULL; |
43988095 JK |
19860 | return (const char *) (sect->buffer + str_offset); |
19861 | } | |
19862 | ||
19863 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
19864 | ||
19865 | static const char * | |
ed2dc618 SM |
19866 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19867 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19868 | { |
ed2dc618 SM |
19869 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19870 | abfd, str_offset, | |
43988095 JK |
19871 | &dwarf2_per_objfile->str, |
19872 | "DW_FORM_strp", ".debug_str"); | |
19873 | } | |
19874 | ||
19875 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
19876 | ||
19877 | static const char * | |
ed2dc618 SM |
19878 | read_indirect_line_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19879 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19880 | { |
ed2dc618 SM |
19881 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19882 | abfd, str_offset, | |
43988095 JK |
19883 | &dwarf2_per_objfile->line_str, |
19884 | "DW_FORM_line_strp", | |
19885 | ".debug_line_str"); | |
c906108c SS |
19886 | } |
19887 | ||
36586728 TT |
19888 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
19889 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
19890 | the string consists of a single NUL byte, return NULL; otherwise | |
19891 | return a pointer to the string. */ | |
19892 | ||
d521ce57 | 19893 | static const char * |
ed2dc618 SM |
19894 | read_indirect_string_from_dwz (struct objfile *objfile, struct dwz_file *dwz, |
19895 | LONGEST str_offset) | |
36586728 | 19896 | { |
ed2dc618 | 19897 | dwarf2_read_section (objfile, &dwz->str); |
36586728 TT |
19898 | |
19899 | if (dwz->str.buffer == NULL) | |
19900 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
19901 | "section [in module %s]"), | |
19902 | bfd_get_filename (dwz->dwz_bfd)); | |
19903 | if (str_offset >= dwz->str.size) | |
19904 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
19905 | ".debug_str section [in module %s]"), | |
19906 | bfd_get_filename (dwz->dwz_bfd)); | |
19907 | gdb_assert (HOST_CHAR_BIT == 8); | |
19908 | if (dwz->str.buffer[str_offset] == '\0') | |
19909 | return NULL; | |
d521ce57 | 19910 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
19911 | } |
19912 | ||
43988095 JK |
19913 | /* Return pointer to string at .debug_str offset as read from BUF. |
19914 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19915 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19916 | ||
d521ce57 | 19917 | static const char * |
ed2dc618 SM |
19918 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19919 | const gdb_byte *buf, | |
cf2c3c16 TT |
19920 | const struct comp_unit_head *cu_header, |
19921 | unsigned int *bytes_read_ptr) | |
19922 | { | |
19923 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19924 | ||
ed2dc618 | 19925 | return read_indirect_string_at_offset (dwarf2_per_objfile, abfd, str_offset); |
cf2c3c16 TT |
19926 | } |
19927 | ||
43988095 JK |
19928 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
19929 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19930 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19931 | ||
19932 | static const char * | |
ed2dc618 SM |
19933 | read_indirect_line_string (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19934 | bfd *abfd, const gdb_byte *buf, | |
43988095 JK |
19935 | const struct comp_unit_head *cu_header, |
19936 | unsigned int *bytes_read_ptr) | |
19937 | { | |
19938 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19939 | ||
ed2dc618 SM |
19940 | return read_indirect_line_string_at_offset (dwarf2_per_objfile, abfd, |
19941 | str_offset); | |
43988095 JK |
19942 | } |
19943 | ||
19944 | ULONGEST | |
d521ce57 | 19945 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
43988095 | 19946 | unsigned int *bytes_read_ptr) |
c906108c | 19947 | { |
12df843f | 19948 | ULONGEST result; |
ce5d95e1 | 19949 | unsigned int num_read; |
870f88f7 | 19950 | int shift; |
c906108c SS |
19951 | unsigned char byte; |
19952 | ||
19953 | result = 0; | |
19954 | shift = 0; | |
19955 | num_read = 0; | |
c906108c SS |
19956 | while (1) |
19957 | { | |
fe1b8b76 | 19958 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19959 | buf++; |
19960 | num_read++; | |
12df843f | 19961 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
19962 | if ((byte & 128) == 0) |
19963 | { | |
19964 | break; | |
19965 | } | |
19966 | shift += 7; | |
19967 | } | |
19968 | *bytes_read_ptr = num_read; | |
19969 | return result; | |
19970 | } | |
19971 | ||
12df843f | 19972 | static LONGEST |
d521ce57 TT |
19973 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
19974 | unsigned int *bytes_read_ptr) | |
c906108c | 19975 | { |
12df843f | 19976 | LONGEST result; |
870f88f7 | 19977 | int shift, num_read; |
c906108c SS |
19978 | unsigned char byte; |
19979 | ||
19980 | result = 0; | |
19981 | shift = 0; | |
c906108c | 19982 | num_read = 0; |
c906108c SS |
19983 | while (1) |
19984 | { | |
fe1b8b76 | 19985 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19986 | buf++; |
19987 | num_read++; | |
12df843f | 19988 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
19989 | shift += 7; |
19990 | if ((byte & 128) == 0) | |
19991 | { | |
19992 | break; | |
19993 | } | |
19994 | } | |
77e0b926 | 19995 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 19996 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
19997 | *bytes_read_ptr = num_read; |
19998 | return result; | |
19999 | } | |
20000 | ||
3019eac3 DE |
20001 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
20002 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
20003 | ADDR_SIZE is the size of addresses from the CU header. */ | |
20004 | ||
20005 | static CORE_ADDR | |
ed2dc618 SM |
20006 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
20007 | unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
3019eac3 DE |
20008 | { |
20009 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
20010 | bfd *abfd = objfile->obfd; | |
20011 | const gdb_byte *info_ptr; | |
20012 | ||
20013 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
20014 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
20015 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 20016 | objfile_name (objfile)); |
3019eac3 DE |
20017 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
20018 | error (_("DW_FORM_addr_index pointing outside of " | |
20019 | ".debug_addr section [in module %s]"), | |
4262abfb | 20020 | objfile_name (objfile)); |
3019eac3 DE |
20021 | info_ptr = (dwarf2_per_objfile->addr.buffer |
20022 | + addr_base + addr_index * addr_size); | |
20023 | if (addr_size == 4) | |
20024 | return bfd_get_32 (abfd, info_ptr); | |
20025 | else | |
20026 | return bfd_get_64 (abfd, info_ptr); | |
20027 | } | |
20028 | ||
20029 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
20030 | ||
20031 | static CORE_ADDR | |
20032 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
20033 | { | |
518817b3 SM |
20034 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
20035 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
20036 | } |
20037 | ||
20038 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
20039 | ||
20040 | static CORE_ADDR | |
d521ce57 | 20041 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
20042 | unsigned int *bytes_read) |
20043 | { | |
518817b3 | 20044 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
20045 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
20046 | ||
20047 | return read_addr_index (cu, addr_index); | |
20048 | } | |
20049 | ||
20050 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
20051 | back to dwarf2_read_addr_index. */ | |
20052 | ||
20053 | struct dwarf2_read_addr_index_data | |
20054 | { | |
20055 | ULONGEST addr_base; | |
20056 | int addr_size; | |
20057 | }; | |
20058 | ||
20059 | /* die_reader_func for dwarf2_read_addr_index. */ | |
20060 | ||
20061 | static void | |
20062 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 20063 | const gdb_byte *info_ptr, |
3019eac3 DE |
20064 | struct die_info *comp_unit_die, |
20065 | int has_children, | |
20066 | void *data) | |
20067 | { | |
20068 | struct dwarf2_cu *cu = reader->cu; | |
20069 | struct dwarf2_read_addr_index_data *aidata = | |
20070 | (struct dwarf2_read_addr_index_data *) data; | |
20071 | ||
20072 | aidata->addr_base = cu->addr_base; | |
20073 | aidata->addr_size = cu->header.addr_size; | |
20074 | } | |
20075 | ||
20076 | /* Given an index in .debug_addr, fetch the value. | |
20077 | NOTE: This can be called during dwarf expression evaluation, | |
20078 | long after the debug information has been read, and thus per_cu->cu | |
20079 | may no longer exist. */ | |
20080 | ||
20081 | CORE_ADDR | |
20082 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
20083 | unsigned int addr_index) | |
20084 | { | |
ed2dc618 SM |
20085 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
20086 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3019eac3 DE |
20087 | struct dwarf2_cu *cu = per_cu->cu; |
20088 | ULONGEST addr_base; | |
20089 | int addr_size; | |
20090 | ||
3019eac3 DE |
20091 | /* We need addr_base and addr_size. |
20092 | If we don't have PER_CU->cu, we have to get it. | |
20093 | Nasty, but the alternative is storing the needed info in PER_CU, | |
20094 | which at this point doesn't seem justified: it's not clear how frequently | |
20095 | it would get used and it would increase the size of every PER_CU. | |
20096 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
20097 | so we're not in uncharted territory here. | |
20098 | Alas we need to be a bit more complicated as addr_base is contained | |
20099 | in the DIE. | |
20100 | ||
20101 | We don't need to read the entire CU(/TU). | |
20102 | We just need the header and top level die. | |
a1b64ce1 | 20103 | |
3019eac3 | 20104 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 20105 | For now we skip this optimization. */ |
3019eac3 DE |
20106 | |
20107 | if (cu != NULL) | |
20108 | { | |
20109 | addr_base = cu->addr_base; | |
20110 | addr_size = cu->header.addr_size; | |
20111 | } | |
20112 | else | |
20113 | { | |
20114 | struct dwarf2_read_addr_index_data aidata; | |
20115 | ||
a1b64ce1 DE |
20116 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
20117 | we need addr_base. */ | |
20118 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
20119 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
20120 | addr_base = aidata.addr_base; |
20121 | addr_size = aidata.addr_size; | |
20122 | } | |
20123 | ||
ed2dc618 SM |
20124 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
20125 | addr_size); | |
3019eac3 DE |
20126 | } |
20127 | ||
57d63ce2 DE |
20128 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
20129 | This is only used by the Fission support. */ | |
3019eac3 | 20130 | |
d521ce57 | 20131 | static const char * |
342587c4 | 20132 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 | 20133 | { |
ed2dc618 | 20134 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
20135 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20136 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20137 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 20138 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 20139 | bfd *abfd = objfile->obfd; |
73869dc2 DE |
20140 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
20141 | struct dwarf2_section_info *str_offsets_section = | |
20142 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 20143 | const gdb_byte *info_ptr; |
3019eac3 | 20144 | ULONGEST str_offset; |
57d63ce2 | 20145 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 20146 | |
73869dc2 DE |
20147 | dwarf2_read_section (objfile, str_section); |
20148 | dwarf2_read_section (objfile, str_offsets_section); | |
20149 | if (str_section->buffer == NULL) | |
57d63ce2 | 20150 | error (_("%s used without .debug_str.dwo section" |
9d8780f0 SM |
20151 | " in CU at offset %s [in module %s]"), |
20152 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20153 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 20154 | error (_("%s used without .debug_str_offsets.dwo section" |
9d8780f0 SM |
20155 | " in CU at offset %s [in module %s]"), |
20156 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20157 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 20158 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
9d8780f0 SM |
20159 | " section in CU at offset %s [in module %s]"), |
20160 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20161 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
20162 | + str_index * cu->header.offset_size); |
20163 | if (cu->header.offset_size == 4) | |
20164 | str_offset = bfd_get_32 (abfd, info_ptr); | |
20165 | else | |
20166 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 20167 | if (str_offset >= str_section->size) |
57d63ce2 | 20168 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
20169 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
20170 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20171 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
20172 | } |
20173 | ||
3019eac3 DE |
20174 | /* Return the length of an LEB128 number in BUF. */ |
20175 | ||
20176 | static int | |
20177 | leb128_size (const gdb_byte *buf) | |
20178 | { | |
20179 | const gdb_byte *begin = buf; | |
20180 | gdb_byte byte; | |
20181 | ||
20182 | while (1) | |
20183 | { | |
20184 | byte = *buf++; | |
20185 | if ((byte & 128) == 0) | |
20186 | return buf - begin; | |
20187 | } | |
20188 | } | |
20189 | ||
c906108c | 20190 | static void |
e142c38c | 20191 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
20192 | { |
20193 | switch (lang) | |
20194 | { | |
20195 | case DW_LANG_C89: | |
76bee0cc | 20196 | case DW_LANG_C99: |
0cfd832f | 20197 | case DW_LANG_C11: |
c906108c | 20198 | case DW_LANG_C: |
d1be3247 | 20199 | case DW_LANG_UPC: |
e142c38c | 20200 | cu->language = language_c; |
c906108c | 20201 | break; |
9c37b5ae | 20202 | case DW_LANG_Java: |
c906108c | 20203 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
20204 | case DW_LANG_C_plus_plus_11: |
20205 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 20206 | cu->language = language_cplus; |
c906108c | 20207 | break; |
6aecb9c2 JB |
20208 | case DW_LANG_D: |
20209 | cu->language = language_d; | |
20210 | break; | |
c906108c SS |
20211 | case DW_LANG_Fortran77: |
20212 | case DW_LANG_Fortran90: | |
b21b22e0 | 20213 | case DW_LANG_Fortran95: |
f7de9aab MW |
20214 | case DW_LANG_Fortran03: |
20215 | case DW_LANG_Fortran08: | |
e142c38c | 20216 | cu->language = language_fortran; |
c906108c | 20217 | break; |
a766d390 DE |
20218 | case DW_LANG_Go: |
20219 | cu->language = language_go; | |
20220 | break; | |
c906108c | 20221 | case DW_LANG_Mips_Assembler: |
e142c38c | 20222 | cu->language = language_asm; |
c906108c SS |
20223 | break; |
20224 | case DW_LANG_Ada83: | |
8aaf0b47 | 20225 | case DW_LANG_Ada95: |
bc5f45f8 JB |
20226 | cu->language = language_ada; |
20227 | break; | |
72019c9c GM |
20228 | case DW_LANG_Modula2: |
20229 | cu->language = language_m2; | |
20230 | break; | |
fe8e67fd PM |
20231 | case DW_LANG_Pascal83: |
20232 | cu->language = language_pascal; | |
20233 | break; | |
22566fbd DJ |
20234 | case DW_LANG_ObjC: |
20235 | cu->language = language_objc; | |
20236 | break; | |
c44af4eb TT |
20237 | case DW_LANG_Rust: |
20238 | case DW_LANG_Rust_old: | |
20239 | cu->language = language_rust; | |
20240 | break; | |
c906108c SS |
20241 | case DW_LANG_Cobol74: |
20242 | case DW_LANG_Cobol85: | |
c906108c | 20243 | default: |
e142c38c | 20244 | cu->language = language_minimal; |
c906108c SS |
20245 | break; |
20246 | } | |
e142c38c | 20247 | cu->language_defn = language_def (cu->language); |
c906108c SS |
20248 | } |
20249 | ||
20250 | /* Return the named attribute or NULL if not there. */ | |
20251 | ||
20252 | static struct attribute * | |
e142c38c | 20253 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 20254 | { |
a48e046c | 20255 | for (;;) |
c906108c | 20256 | { |
a48e046c TT |
20257 | unsigned int i; |
20258 | struct attribute *spec = NULL; | |
20259 | ||
20260 | for (i = 0; i < die->num_attrs; ++i) | |
20261 | { | |
20262 | if (die->attrs[i].name == name) | |
20263 | return &die->attrs[i]; | |
20264 | if (die->attrs[i].name == DW_AT_specification | |
20265 | || die->attrs[i].name == DW_AT_abstract_origin) | |
20266 | spec = &die->attrs[i]; | |
20267 | } | |
20268 | ||
20269 | if (!spec) | |
20270 | break; | |
c906108c | 20271 | |
f2f0e013 | 20272 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 20273 | } |
c5aa993b | 20274 | |
c906108c SS |
20275 | return NULL; |
20276 | } | |
20277 | ||
348e048f DE |
20278 | /* Return the named attribute or NULL if not there, |
20279 | but do not follow DW_AT_specification, etc. | |
20280 | This is for use in contexts where we're reading .debug_types dies. | |
20281 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
20282 | back up the chain, and we want to go down. */ | |
20283 | ||
20284 | static struct attribute * | |
45e58e77 | 20285 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
20286 | { |
20287 | unsigned int i; | |
20288 | ||
20289 | for (i = 0; i < die->num_attrs; ++i) | |
20290 | if (die->attrs[i].name == name) | |
20291 | return &die->attrs[i]; | |
20292 | ||
20293 | return NULL; | |
20294 | } | |
20295 | ||
7d45c7c3 KB |
20296 | /* Return the string associated with a string-typed attribute, or NULL if it |
20297 | is either not found or is of an incorrect type. */ | |
20298 | ||
20299 | static const char * | |
20300 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
20301 | { | |
20302 | struct attribute *attr; | |
20303 | const char *str = NULL; | |
20304 | ||
20305 | attr = dwarf2_attr (die, name, cu); | |
20306 | ||
20307 | if (attr != NULL) | |
20308 | { | |
43988095 | 20309 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 L |
20310 | || attr->form == DW_FORM_string |
20311 | || attr->form == DW_FORM_GNU_str_index | |
16eb6b2d | 20312 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
20313 | str = DW_STRING (attr); |
20314 | else | |
20315 | complaint (&symfile_complaints, | |
20316 | _("string type expected for attribute %s for " | |
9d8780f0 SM |
20317 | "DIE at %s in module %s"), |
20318 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 20319 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
20320 | } |
20321 | ||
20322 | return str; | |
20323 | } | |
20324 | ||
05cf31d1 JB |
20325 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
20326 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 20327 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
20328 | |
20329 | static int | |
20330 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
20331 | { | |
20332 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
20333 | ||
20334 | return (attr && DW_UNSND (attr)); | |
20335 | } | |
20336 | ||
3ca72b44 | 20337 | static int |
e142c38c | 20338 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 20339 | { |
05cf31d1 JB |
20340 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
20341 | which value is non-zero. However, we have to be careful with | |
20342 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
20343 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
20344 | end up accidently finding a declaration attribute that belongs | |
20345 | to a different DIE referenced by the specification attribute, | |
20346 | even though the given DIE does not have a declaration attribute. */ | |
20347 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
20348 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
20349 | } |
20350 | ||
63d06c5c | 20351 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 20352 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
20353 | containing the return value on output. If there is no |
20354 | specification, but there is an abstract origin, that is | |
20355 | returned. */ | |
63d06c5c DC |
20356 | |
20357 | static struct die_info * | |
f2f0e013 | 20358 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 20359 | { |
f2f0e013 DJ |
20360 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
20361 | *spec_cu); | |
63d06c5c | 20362 | |
edb3359d DJ |
20363 | if (spec_attr == NULL) |
20364 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
20365 | ||
63d06c5c DC |
20366 | if (spec_attr == NULL) |
20367 | return NULL; | |
20368 | else | |
f2f0e013 | 20369 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 20370 | } |
c906108c | 20371 | |
527f3840 JK |
20372 | /* Stub for free_line_header to match void * callback types. */ |
20373 | ||
20374 | static void | |
20375 | free_line_header_voidp (void *arg) | |
20376 | { | |
9a3c8263 | 20377 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 20378 | |
fff8551c | 20379 | delete lh; |
527f3840 JK |
20380 | } |
20381 | ||
fff8551c PA |
20382 | void |
20383 | line_header::add_include_dir (const char *include_dir) | |
c906108c | 20384 | { |
27e0867f | 20385 | if (dwarf_line_debug >= 2) |
fff8551c PA |
20386 | fprintf_unfiltered (gdb_stdlog, "Adding dir %zu: %s\n", |
20387 | include_dirs.size () + 1, include_dir); | |
27e0867f | 20388 | |
fff8551c | 20389 | include_dirs.push_back (include_dir); |
debd256d | 20390 | } |
6e70227d | 20391 | |
fff8551c PA |
20392 | void |
20393 | line_header::add_file_name (const char *name, | |
ecfb656c | 20394 | dir_index d_index, |
fff8551c PA |
20395 | unsigned int mod_time, |
20396 | unsigned int length) | |
debd256d | 20397 | { |
27e0867f DE |
20398 | if (dwarf_line_debug >= 2) |
20399 | fprintf_unfiltered (gdb_stdlog, "Adding file %u: %s\n", | |
fff8551c | 20400 | (unsigned) file_names.size () + 1, name); |
27e0867f | 20401 | |
ecfb656c | 20402 | file_names.emplace_back (name, d_index, mod_time, length); |
debd256d | 20403 | } |
6e70227d | 20404 | |
83769d0b | 20405 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
20406 | |
20407 | static struct dwarf2_section_info * | |
20408 | get_debug_line_section (struct dwarf2_cu *cu) | |
20409 | { | |
20410 | struct dwarf2_section_info *section; | |
518817b3 SM |
20411 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20412 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
20413 | |
20414 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
20415 | DWO file. */ | |
20416 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
20417 | section = &cu->dwo_unit->dwo_file->sections.line; | |
20418 | else if (cu->per_cu->is_dwz) | |
20419 | { | |
ed2dc618 | 20420 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
20421 | |
20422 | section = &dwz->line; | |
20423 | } | |
20424 | else | |
20425 | section = &dwarf2_per_objfile->line; | |
20426 | ||
20427 | return section; | |
20428 | } | |
20429 | ||
43988095 JK |
20430 | /* Read directory or file name entry format, starting with byte of |
20431 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
20432 | entries count and the entries themselves in the described entry | |
20433 | format. */ | |
20434 | ||
20435 | static void | |
ed2dc618 SM |
20436 | read_formatted_entries (struct dwarf2_per_objfile *dwarf2_per_objfile, |
20437 | bfd *abfd, const gdb_byte **bufp, | |
43988095 JK |
20438 | struct line_header *lh, |
20439 | const struct comp_unit_head *cu_header, | |
20440 | void (*callback) (struct line_header *lh, | |
20441 | const char *name, | |
ecfb656c | 20442 | dir_index d_index, |
43988095 JK |
20443 | unsigned int mod_time, |
20444 | unsigned int length)) | |
20445 | { | |
20446 | gdb_byte format_count, formati; | |
20447 | ULONGEST data_count, datai; | |
20448 | const gdb_byte *buf = *bufp; | |
20449 | const gdb_byte *format_header_data; | |
43988095 JK |
20450 | unsigned int bytes_read; |
20451 | ||
20452 | format_count = read_1_byte (abfd, buf); | |
20453 | buf += 1; | |
20454 | format_header_data = buf; | |
20455 | for (formati = 0; formati < format_count; formati++) | |
20456 | { | |
20457 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20458 | buf += bytes_read; | |
20459 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20460 | buf += bytes_read; | |
20461 | } | |
20462 | ||
20463 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20464 | buf += bytes_read; | |
20465 | for (datai = 0; datai < data_count; datai++) | |
20466 | { | |
20467 | const gdb_byte *format = format_header_data; | |
20468 | struct file_entry fe; | |
20469 | ||
43988095 JK |
20470 | for (formati = 0; formati < format_count; formati++) |
20471 | { | |
ecfb656c | 20472 | ULONGEST content_type = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20473 | format += bytes_read; |
43988095 | 20474 | |
ecfb656c | 20475 | ULONGEST form = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20476 | format += bytes_read; |
ecfb656c PA |
20477 | |
20478 | gdb::optional<const char *> string; | |
20479 | gdb::optional<unsigned int> uint; | |
20480 | ||
43988095 JK |
20481 | switch (form) |
20482 | { | |
20483 | case DW_FORM_string: | |
ecfb656c | 20484 | string.emplace (read_direct_string (abfd, buf, &bytes_read)); |
43988095 JK |
20485 | buf += bytes_read; |
20486 | break; | |
20487 | ||
20488 | case DW_FORM_line_strp: | |
ed2dc618 SM |
20489 | string.emplace (read_indirect_line_string (dwarf2_per_objfile, |
20490 | abfd, buf, | |
ecfb656c PA |
20491 | cu_header, |
20492 | &bytes_read)); | |
43988095 JK |
20493 | buf += bytes_read; |
20494 | break; | |
20495 | ||
20496 | case DW_FORM_data1: | |
ecfb656c | 20497 | uint.emplace (read_1_byte (abfd, buf)); |
43988095 JK |
20498 | buf += 1; |
20499 | break; | |
20500 | ||
20501 | case DW_FORM_data2: | |
ecfb656c | 20502 | uint.emplace (read_2_bytes (abfd, buf)); |
43988095 JK |
20503 | buf += 2; |
20504 | break; | |
20505 | ||
20506 | case DW_FORM_data4: | |
ecfb656c | 20507 | uint.emplace (read_4_bytes (abfd, buf)); |
43988095 JK |
20508 | buf += 4; |
20509 | break; | |
20510 | ||
20511 | case DW_FORM_data8: | |
ecfb656c | 20512 | uint.emplace (read_8_bytes (abfd, buf)); |
43988095 JK |
20513 | buf += 8; |
20514 | break; | |
20515 | ||
20516 | case DW_FORM_udata: | |
ecfb656c | 20517 | uint.emplace (read_unsigned_leb128 (abfd, buf, &bytes_read)); |
43988095 JK |
20518 | buf += bytes_read; |
20519 | break; | |
20520 | ||
20521 | case DW_FORM_block: | |
20522 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
20523 | current GDB. */ | |
20524 | break; | |
20525 | } | |
ecfb656c PA |
20526 | |
20527 | switch (content_type) | |
20528 | { | |
20529 | case DW_LNCT_path: | |
20530 | if (string.has_value ()) | |
20531 | fe.name = *string; | |
20532 | break; | |
20533 | case DW_LNCT_directory_index: | |
20534 | if (uint.has_value ()) | |
20535 | fe.d_index = (dir_index) *uint; | |
20536 | break; | |
20537 | case DW_LNCT_timestamp: | |
20538 | if (uint.has_value ()) | |
20539 | fe.mod_time = *uint; | |
20540 | break; | |
20541 | case DW_LNCT_size: | |
20542 | if (uint.has_value ()) | |
20543 | fe.length = *uint; | |
20544 | break; | |
20545 | case DW_LNCT_MD5: | |
20546 | break; | |
20547 | default: | |
20548 | complaint (&symfile_complaints, | |
20549 | _("Unknown format content type %s"), | |
20550 | pulongest (content_type)); | |
20551 | } | |
43988095 JK |
20552 | } |
20553 | ||
ecfb656c | 20554 | callback (lh, fe.name, fe.d_index, fe.mod_time, fe.length); |
43988095 JK |
20555 | } |
20556 | ||
20557 | *bufp = buf; | |
20558 | } | |
20559 | ||
debd256d | 20560 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20561 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20562 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20563 | Returns NULL if there is a problem reading the header, e.g., if it |
20564 | has a version we don't understand. | |
debd256d JB |
20565 | |
20566 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20567 | the returned object point into the dwarf line section buffer, |
20568 | and must not be freed. */ | |
ae2de4f8 | 20569 | |
fff8551c | 20570 | static line_header_up |
9c541725 | 20571 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20572 | { |
d521ce57 | 20573 | const gdb_byte *line_ptr; |
c764a876 | 20574 | unsigned int bytes_read, offset_size; |
debd256d | 20575 | int i; |
d521ce57 | 20576 | const char *cur_dir, *cur_file; |
3019eac3 DE |
20577 | struct dwarf2_section_info *section; |
20578 | bfd *abfd; | |
518817b3 SM |
20579 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20580 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20581 | |
36586728 | 20582 | section = get_debug_line_section (cu); |
3019eac3 DE |
20583 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
20584 | if (section->buffer == NULL) | |
debd256d | 20585 | { |
3019eac3 DE |
20586 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
20587 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
20588 | else | |
20589 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
20590 | return 0; |
20591 | } | |
20592 | ||
fceca515 DE |
20593 | /* We can't do this until we know the section is non-empty. |
20594 | Only then do we know we have such a section. */ | |
a32a8923 | 20595 | abfd = get_section_bfd_owner (section); |
fceca515 | 20596 | |
a738430d MK |
20597 | /* Make sure that at least there's room for the total_length field. |
20598 | That could be 12 bytes long, but we're just going to fudge that. */ | |
9c541725 | 20599 | if (to_underlying (sect_off) + 4 >= section->size) |
debd256d | 20600 | { |
4d3c2250 | 20601 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20602 | return 0; |
20603 | } | |
20604 | ||
fff8551c | 20605 | line_header_up lh (new line_header ()); |
debd256d | 20606 | |
9c541725 | 20607 | lh->sect_off = sect_off; |
527f3840 JK |
20608 | lh->offset_in_dwz = cu->per_cu->is_dwz; |
20609 | ||
9c541725 | 20610 | line_ptr = section->buffer + to_underlying (sect_off); |
debd256d | 20611 | |
a738430d | 20612 | /* Read in the header. */ |
6e70227d | 20613 | lh->total_length = |
c764a876 DE |
20614 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
20615 | &bytes_read, &offset_size); | |
debd256d | 20616 | line_ptr += bytes_read; |
3019eac3 | 20617 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 20618 | { |
4d3c2250 | 20619 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20620 | return 0; |
20621 | } | |
20622 | lh->statement_program_end = line_ptr + lh->total_length; | |
20623 | lh->version = read_2_bytes (abfd, line_ptr); | |
20624 | line_ptr += 2; | |
43988095 | 20625 | if (lh->version > 5) |
cd366ee8 DE |
20626 | { |
20627 | /* This is a version we don't understand. The format could have | |
20628 | changed in ways we don't handle properly so just punt. */ | |
20629 | complaint (&symfile_complaints, | |
20630 | _("unsupported version in .debug_line section")); | |
20631 | return NULL; | |
20632 | } | |
43988095 JK |
20633 | if (lh->version >= 5) |
20634 | { | |
20635 | gdb_byte segment_selector_size; | |
20636 | ||
20637 | /* Skip address size. */ | |
20638 | read_1_byte (abfd, line_ptr); | |
20639 | line_ptr += 1; | |
20640 | ||
20641 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
20642 | line_ptr += 1; | |
20643 | if (segment_selector_size != 0) | |
20644 | { | |
20645 | complaint (&symfile_complaints, | |
20646 | _("unsupported segment selector size %u " | |
20647 | "in .debug_line section"), | |
20648 | segment_selector_size); | |
20649 | return NULL; | |
20650 | } | |
20651 | } | |
c764a876 DE |
20652 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
20653 | line_ptr += offset_size; | |
debd256d JB |
20654 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
20655 | line_ptr += 1; | |
2dc7f7b3 TT |
20656 | if (lh->version >= 4) |
20657 | { | |
20658 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
20659 | line_ptr += 1; | |
20660 | } | |
20661 | else | |
20662 | lh->maximum_ops_per_instruction = 1; | |
20663 | ||
20664 | if (lh->maximum_ops_per_instruction == 0) | |
20665 | { | |
20666 | lh->maximum_ops_per_instruction = 1; | |
20667 | complaint (&symfile_complaints, | |
3e43a32a MS |
20668 | _("invalid maximum_ops_per_instruction " |
20669 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
20670 | } |
20671 | ||
debd256d JB |
20672 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
20673 | line_ptr += 1; | |
20674 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
20675 | line_ptr += 1; | |
20676 | lh->line_range = read_1_byte (abfd, line_ptr); | |
20677 | line_ptr += 1; | |
20678 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
20679 | line_ptr += 1; | |
fff8551c | 20680 | lh->standard_opcode_lengths.reset (new unsigned char[lh->opcode_base]); |
debd256d JB |
20681 | |
20682 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
20683 | for (i = 1; i < lh->opcode_base; ++i) | |
20684 | { | |
20685 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
20686 | line_ptr += 1; | |
20687 | } | |
20688 | ||
43988095 | 20689 | if (lh->version >= 5) |
debd256d | 20690 | { |
43988095 | 20691 | /* Read directory table. */ |
ed2dc618 SM |
20692 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20693 | &cu->header, | |
fff8551c | 20694 | [] (struct line_header *lh, const char *name, |
ecfb656c | 20695 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20696 | unsigned int length) |
20697 | { | |
20698 | lh->add_include_dir (name); | |
20699 | }); | |
debd256d | 20700 | |
43988095 | 20701 | /* Read file name table. */ |
ed2dc618 SM |
20702 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20703 | &cu->header, | |
fff8551c | 20704 | [] (struct line_header *lh, const char *name, |
ecfb656c | 20705 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20706 | unsigned int length) |
20707 | { | |
ecfb656c | 20708 | lh->add_file_name (name, d_index, mod_time, length); |
fff8551c | 20709 | }); |
43988095 JK |
20710 | } |
20711 | else | |
debd256d | 20712 | { |
43988095 JK |
20713 | /* Read directory table. */ |
20714 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20715 | { | |
20716 | line_ptr += bytes_read; | |
fff8551c | 20717 | lh->add_include_dir (cur_dir); |
43988095 | 20718 | } |
debd256d JB |
20719 | line_ptr += bytes_read; |
20720 | ||
43988095 JK |
20721 | /* Read file name table. */ |
20722 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20723 | { | |
ecfb656c PA |
20724 | unsigned int mod_time, length; |
20725 | dir_index d_index; | |
43988095 JK |
20726 | |
20727 | line_ptr += bytes_read; | |
ecfb656c | 20728 | d_index = (dir_index) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
43988095 JK |
20729 | line_ptr += bytes_read; |
20730 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20731 | line_ptr += bytes_read; | |
20732 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20733 | line_ptr += bytes_read; | |
20734 | ||
ecfb656c | 20735 | lh->add_file_name (cur_file, d_index, mod_time, length); |
43988095 JK |
20736 | } |
20737 | line_ptr += bytes_read; | |
debd256d | 20738 | } |
6e70227d | 20739 | lh->statement_program_start = line_ptr; |
debd256d | 20740 | |
3019eac3 | 20741 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 20742 | complaint (&symfile_complaints, |
3e43a32a MS |
20743 | _("line number info header doesn't " |
20744 | "fit in `.debug_line' section")); | |
debd256d | 20745 | |
debd256d JB |
20746 | return lh; |
20747 | } | |
c906108c | 20748 | |
c6da4cef DE |
20749 | /* Subroutine of dwarf_decode_lines to simplify it. |
20750 | Return the file name of the psymtab for included file FILE_INDEX | |
20751 | in line header LH of PST. | |
20752 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
c89b44cd TT |
20753 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20754 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20755 | |
d521ce57 | 20756 | static const char * |
c6da4cef DE |
20757 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
20758 | const struct partial_symtab *pst, | |
c89b44cd TT |
20759 | const char *comp_dir, |
20760 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20761 | { |
8c43009f | 20762 | const file_entry &fe = lh->file_names[file_index]; |
d521ce57 TT |
20763 | const char *include_name = fe.name; |
20764 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20765 | const char *pst_filename; |
c6da4cef DE |
20766 | int file_is_pst; |
20767 | ||
8c43009f | 20768 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20769 | |
c89b44cd | 20770 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20771 | if (!IS_ABSOLUTE_PATH (include_name) |
20772 | && (dir_name != NULL || comp_dir != NULL)) | |
20773 | { | |
20774 | /* Avoid creating a duplicate psymtab for PST. | |
20775 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20776 | Before we do the comparison, however, we need to account | |
20777 | for DIR_NAME and COMP_DIR. | |
20778 | First prepend dir_name (if non-NULL). If we still don't | |
20779 | have an absolute path prepend comp_dir (if non-NULL). | |
20780 | However, the directory we record in the include-file's | |
20781 | psymtab does not contain COMP_DIR (to match the | |
20782 | corresponding symtab(s)). | |
20783 | ||
20784 | Example: | |
20785 | ||
20786 | bash$ cd /tmp | |
20787 | bash$ gcc -g ./hello.c | |
20788 | include_name = "hello.c" | |
20789 | dir_name = "." | |
20790 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20791 | DW_AT_name = "./hello.c" |
20792 | ||
20793 | */ | |
c6da4cef DE |
20794 | |
20795 | if (dir_name != NULL) | |
20796 | { | |
c89b44cd TT |
20797 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20798 | include_name, (char *) NULL)); | |
20799 | include_name = name_holder->get (); | |
c6da4cef | 20800 | include_name_to_compare = include_name; |
c6da4cef DE |
20801 | } |
20802 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20803 | { | |
c89b44cd TT |
20804 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20805 | include_name, (char *) NULL)); | |
20806 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20807 | } |
20808 | } | |
20809 | ||
20810 | pst_filename = pst->filename; | |
c89b44cd | 20811 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20812 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20813 | { | |
c89b44cd TT |
20814 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20815 | pst_filename, (char *) NULL)); | |
20816 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20817 | } |
20818 | ||
1e3fad37 | 20819 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20820 | |
c6da4cef DE |
20821 | if (file_is_pst) |
20822 | return NULL; | |
20823 | return include_name; | |
20824 | } | |
20825 | ||
d9b3de22 DE |
20826 | /* State machine to track the state of the line number program. */ |
20827 | ||
6f77053d | 20828 | class lnp_state_machine |
d9b3de22 | 20829 | { |
6f77053d PA |
20830 | public: |
20831 | /* Initialize a machine state for the start of a line number | |
20832 | program. */ | |
20833 | lnp_state_machine (gdbarch *arch, line_header *lh, bool record_lines_p); | |
20834 | ||
8c43009f PA |
20835 | file_entry *current_file () |
20836 | { | |
20837 | /* lh->file_names is 0-based, but the file name numbers in the | |
20838 | statement program are 1-based. */ | |
6f77053d PA |
20839 | return m_line_header->file_name_at (m_file); |
20840 | } | |
20841 | ||
20842 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20843 | we're processing the end of a sequence. */ | |
20844 | void record_line (bool end_sequence); | |
20845 | ||
20846 | /* Check address and if invalid nop-out the rest of the lines in this | |
20847 | sequence. */ | |
20848 | void check_line_address (struct dwarf2_cu *cu, | |
20849 | const gdb_byte *line_ptr, | |
20850 | CORE_ADDR lowpc, CORE_ADDR address); | |
20851 | ||
20852 | void handle_set_discriminator (unsigned int discriminator) | |
20853 | { | |
20854 | m_discriminator = discriminator; | |
20855 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20856 | } | |
20857 | ||
20858 | /* Handle DW_LNE_set_address. */ | |
20859 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20860 | { | |
20861 | m_op_index = 0; | |
20862 | address += baseaddr; | |
20863 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20864 | } | |
20865 | ||
20866 | /* Handle DW_LNS_advance_pc. */ | |
20867 | void handle_advance_pc (CORE_ADDR adjust); | |
20868 | ||
20869 | /* Handle a special opcode. */ | |
20870 | void handle_special_opcode (unsigned char op_code); | |
20871 | ||
20872 | /* Handle DW_LNS_advance_line. */ | |
20873 | void handle_advance_line (int line_delta) | |
20874 | { | |
20875 | advance_line (line_delta); | |
20876 | } | |
20877 | ||
20878 | /* Handle DW_LNS_set_file. */ | |
20879 | void handle_set_file (file_name_index file); | |
20880 | ||
20881 | /* Handle DW_LNS_negate_stmt. */ | |
20882 | void handle_negate_stmt () | |
20883 | { | |
20884 | m_is_stmt = !m_is_stmt; | |
20885 | } | |
20886 | ||
20887 | /* Handle DW_LNS_const_add_pc. */ | |
20888 | void handle_const_add_pc (); | |
20889 | ||
20890 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20891 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20892 | { | |
20893 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20894 | m_op_index = 0; | |
20895 | } | |
20896 | ||
20897 | /* Handle DW_LNS_copy. */ | |
20898 | void handle_copy () | |
20899 | { | |
20900 | record_line (false); | |
20901 | m_discriminator = 0; | |
20902 | } | |
20903 | ||
20904 | /* Handle DW_LNE_end_sequence. */ | |
20905 | void handle_end_sequence () | |
20906 | { | |
20907 | m_record_line_callback = ::record_line; | |
20908 | } | |
20909 | ||
20910 | private: | |
20911 | /* Advance the line by LINE_DELTA. */ | |
20912 | void advance_line (int line_delta) | |
20913 | { | |
20914 | m_line += line_delta; | |
20915 | ||
20916 | if (line_delta != 0) | |
20917 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20918 | } |
20919 | ||
6f77053d PA |
20920 | gdbarch *m_gdbarch; |
20921 | ||
20922 | /* True if we're recording lines. | |
20923 | Otherwise we're building partial symtabs and are just interested in | |
20924 | finding include files mentioned by the line number program. */ | |
20925 | bool m_record_lines_p; | |
20926 | ||
8c43009f | 20927 | /* The line number header. */ |
6f77053d | 20928 | line_header *m_line_header; |
8c43009f | 20929 | |
6f77053d PA |
20930 | /* These are part of the standard DWARF line number state machine, |
20931 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20932 | |
6f77053d | 20933 | unsigned char m_op_index = 0; |
8c43009f | 20934 | /* The line table index (1-based) of the current file. */ |
6f77053d PA |
20935 | file_name_index m_file = (file_name_index) 1; |
20936 | unsigned int m_line = 1; | |
20937 | ||
20938 | /* These are initialized in the constructor. */ | |
20939 | ||
20940 | CORE_ADDR m_address; | |
20941 | bool m_is_stmt; | |
20942 | unsigned int m_discriminator; | |
d9b3de22 DE |
20943 | |
20944 | /* Additional bits of state we need to track. */ | |
20945 | ||
20946 | /* The last file that we called dwarf2_start_subfile for. | |
20947 | This is only used for TLLs. */ | |
6f77053d | 20948 | unsigned int m_last_file = 0; |
d9b3de22 | 20949 | /* The last file a line number was recorded for. */ |
6f77053d | 20950 | struct subfile *m_last_subfile = NULL; |
d9b3de22 DE |
20951 | |
20952 | /* The function to call to record a line. */ | |
6f77053d | 20953 | record_line_ftype *m_record_line_callback = NULL; |
d9b3de22 DE |
20954 | |
20955 | /* The last line number that was recorded, used to coalesce | |
20956 | consecutive entries for the same line. This can happen, for | |
20957 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20958 | unsigned int m_last_line = 0; |
20959 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20960 | }; |
d9b3de22 | 20961 | |
6f77053d PA |
20962 | void |
20963 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20964 | { | |
20965 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20966 | / m_line_header->maximum_ops_per_instruction) | |
20967 | * m_line_header->minimum_instruction_length); | |
20968 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20969 | m_op_index = ((m_op_index + adjust) | |
20970 | % m_line_header->maximum_ops_per_instruction); | |
20971 | } | |
d9b3de22 | 20972 | |
6f77053d PA |
20973 | void |
20974 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20975 | { |
6f77053d PA |
20976 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
20977 | CORE_ADDR addr_adj = (((m_op_index | |
20978 | + (adj_opcode / m_line_header->line_range)) | |
20979 | / m_line_header->maximum_ops_per_instruction) | |
20980 | * m_line_header->minimum_instruction_length); | |
20981 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20982 | m_op_index = ((m_op_index + (adj_opcode / m_line_header->line_range)) | |
20983 | % m_line_header->maximum_ops_per_instruction); | |
d9b3de22 | 20984 | |
6f77053d PA |
20985 | int line_delta = (m_line_header->line_base |
20986 | + (adj_opcode % m_line_header->line_range)); | |
20987 | advance_line (line_delta); | |
20988 | record_line (false); | |
20989 | m_discriminator = 0; | |
20990 | } | |
d9b3de22 | 20991 | |
6f77053d PA |
20992 | void |
20993 | lnp_state_machine::handle_set_file (file_name_index file) | |
20994 | { | |
20995 | m_file = file; | |
20996 | ||
20997 | const file_entry *fe = current_file (); | |
20998 | if (fe == NULL) | |
20999 | dwarf2_debug_line_missing_file_complaint (); | |
21000 | else if (m_record_lines_p) | |
21001 | { | |
21002 | const char *dir = fe->include_dir (m_line_header); | |
21003 | ||
21004 | m_last_subfile = current_subfile; | |
21005 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
21006 | dwarf2_start_subfile (fe->name, dir); | |
21007 | } | |
21008 | } | |
21009 | ||
21010 | void | |
21011 | lnp_state_machine::handle_const_add_pc () | |
21012 | { | |
21013 | CORE_ADDR adjust | |
21014 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
21015 | ||
21016 | CORE_ADDR addr_adj | |
21017 | = (((m_op_index + adjust) | |
21018 | / m_line_header->maximum_ops_per_instruction) | |
21019 | * m_line_header->minimum_instruction_length); | |
21020 | ||
21021 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21022 | m_op_index = ((m_op_index + adjust) | |
21023 | % m_line_header->maximum_ops_per_instruction); | |
21024 | } | |
d9b3de22 | 21025 | |
c91513d8 PP |
21026 | /* Ignore this record_line request. */ |
21027 | ||
21028 | static void | |
21029 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
21030 | { | |
21031 | return; | |
21032 | } | |
21033 | ||
a05a36a5 DE |
21034 | /* Return non-zero if we should add LINE to the line number table. |
21035 | LINE is the line to add, LAST_LINE is the last line that was added, | |
21036 | LAST_SUBFILE is the subfile for LAST_LINE. | |
21037 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
21038 | had a non-zero discriminator. | |
21039 | ||
21040 | We have to be careful in the presence of discriminators. | |
21041 | E.g., for this line: | |
21042 | ||
21043 | for (i = 0; i < 100000; i++); | |
21044 | ||
21045 | clang can emit four line number entries for that one line, | |
21046 | each with a different discriminator. | |
21047 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
21048 | ||
21049 | However, we want gdb to coalesce all four entries into one. | |
21050 | Otherwise the user could stepi into the middle of the line and | |
21051 | gdb would get confused about whether the pc really was in the | |
21052 | middle of the line. | |
21053 | ||
21054 | Things are further complicated by the fact that two consecutive | |
21055 | line number entries for the same line is a heuristic used by gcc | |
21056 | to denote the end of the prologue. So we can't just discard duplicate | |
21057 | entries, we have to be selective about it. The heuristic we use is | |
21058 | that we only collapse consecutive entries for the same line if at least | |
21059 | one of those entries has a non-zero discriminator. PR 17276. | |
21060 | ||
21061 | Note: Addresses in the line number state machine can never go backwards | |
21062 | within one sequence, thus this coalescing is ok. */ | |
21063 | ||
21064 | static int | |
21065 | dwarf_record_line_p (unsigned int line, unsigned int last_line, | |
21066 | int line_has_non_zero_discriminator, | |
21067 | struct subfile *last_subfile) | |
21068 | { | |
21069 | if (current_subfile != last_subfile) | |
21070 | return 1; | |
21071 | if (line != last_line) | |
21072 | return 1; | |
21073 | /* Same line for the same file that we've seen already. | |
21074 | As a last check, for pr 17276, only record the line if the line | |
21075 | has never had a non-zero discriminator. */ | |
21076 | if (!line_has_non_zero_discriminator) | |
21077 | return 1; | |
21078 | return 0; | |
21079 | } | |
21080 | ||
252a6764 DE |
21081 | /* Use P_RECORD_LINE to record line number LINE beginning at address ADDRESS |
21082 | in the line table of subfile SUBFILE. */ | |
21083 | ||
21084 | static void | |
d9b3de22 DE |
21085 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
21086 | unsigned int line, CORE_ADDR address, | |
21087 | record_line_ftype p_record_line) | |
252a6764 DE |
21088 | { |
21089 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
21090 | ||
27e0867f DE |
21091 | if (dwarf_line_debug) |
21092 | { | |
21093 | fprintf_unfiltered (gdb_stdlog, | |
21094 | "Recording line %u, file %s, address %s\n", | |
21095 | line, lbasename (subfile->name), | |
21096 | paddress (gdbarch, address)); | |
21097 | } | |
21098 | ||
d5962de5 | 21099 | (*p_record_line) (subfile, line, addr); |
252a6764 DE |
21100 | } |
21101 | ||
21102 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
21103 | Mark the end of a set of line number records. | |
d9b3de22 | 21104 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
21105 | If SUBFILE is NULL the request is ignored. */ |
21106 | ||
21107 | static void | |
21108 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
21109 | CORE_ADDR address, record_line_ftype p_record_line) | |
21110 | { | |
27e0867f DE |
21111 | if (subfile == NULL) |
21112 | return; | |
21113 | ||
21114 | if (dwarf_line_debug) | |
21115 | { | |
21116 | fprintf_unfiltered (gdb_stdlog, | |
21117 | "Finishing current line, file %s, address %s\n", | |
21118 | lbasename (subfile->name), | |
21119 | paddress (gdbarch, address)); | |
21120 | } | |
21121 | ||
d9b3de22 DE |
21122 | dwarf_record_line_1 (gdbarch, subfile, 0, address, p_record_line); |
21123 | } | |
21124 | ||
6f77053d PA |
21125 | void |
21126 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 21127 | { |
d9b3de22 DE |
21128 | if (dwarf_line_debug) |
21129 | { | |
21130 | fprintf_unfiltered (gdb_stdlog, | |
21131 | "Processing actual line %u: file %u," | |
21132 | " address %s, is_stmt %u, discrim %u\n", | |
6f77053d PA |
21133 | m_line, to_underlying (m_file), |
21134 | paddress (m_gdbarch, m_address), | |
21135 | m_is_stmt, m_discriminator); | |
d9b3de22 DE |
21136 | } |
21137 | ||
6f77053d | 21138 | file_entry *fe = current_file (); |
8c43009f PA |
21139 | |
21140 | if (fe == NULL) | |
d9b3de22 DE |
21141 | dwarf2_debug_line_missing_file_complaint (); |
21142 | /* For now we ignore lines not starting on an instruction boundary. | |
21143 | But not when processing end_sequence for compatibility with the | |
21144 | previous version of the code. */ | |
6f77053d | 21145 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 21146 | { |
8c43009f | 21147 | fe->included_p = 1; |
6f77053d | 21148 | if (m_record_lines_p && m_is_stmt) |
d9b3de22 | 21149 | { |
6f77053d | 21150 | if (m_last_subfile != current_subfile || end_sequence) |
d9b3de22 | 21151 | { |
6f77053d PA |
21152 | dwarf_finish_line (m_gdbarch, m_last_subfile, |
21153 | m_address, m_record_line_callback); | |
d9b3de22 DE |
21154 | } |
21155 | ||
21156 | if (!end_sequence) | |
21157 | { | |
6f77053d PA |
21158 | if (dwarf_record_line_p (m_line, m_last_line, |
21159 | m_line_has_non_zero_discriminator, | |
21160 | m_last_subfile)) | |
d9b3de22 | 21161 | { |
6f77053d PA |
21162 | dwarf_record_line_1 (m_gdbarch, current_subfile, |
21163 | m_line, m_address, | |
21164 | m_record_line_callback); | |
d9b3de22 | 21165 | } |
6f77053d PA |
21166 | m_last_subfile = current_subfile; |
21167 | m_last_line = m_line; | |
d9b3de22 DE |
21168 | } |
21169 | } | |
21170 | } | |
21171 | } | |
21172 | ||
6f77053d PA |
21173 | lnp_state_machine::lnp_state_machine (gdbarch *arch, line_header *lh, |
21174 | bool record_lines_p) | |
d9b3de22 | 21175 | { |
6f77053d PA |
21176 | m_gdbarch = arch; |
21177 | m_record_lines_p = record_lines_p; | |
21178 | m_line_header = lh; | |
d9b3de22 | 21179 | |
6f77053d | 21180 | m_record_line_callback = ::record_line; |
d9b3de22 | 21181 | |
d9b3de22 DE |
21182 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
21183 | was a line entry for it so that the backend has a chance to adjust it | |
21184 | and also record it in case it needs it. This is currently used by MIPS | |
21185 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
21186 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
21187 | m_is_stmt = lh->default_is_stmt; | |
21188 | m_discriminator = 0; | |
252a6764 DE |
21189 | } |
21190 | ||
6f77053d PA |
21191 | void |
21192 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
21193 | const gdb_byte *line_ptr, | |
21194 | CORE_ADDR lowpc, CORE_ADDR address) | |
924c2928 DE |
21195 | { |
21196 | /* If address < lowpc then it's not a usable value, it's outside the | |
21197 | pc range of the CU. However, we restrict the test to only address | |
21198 | values of zero to preserve GDB's previous behaviour which is to | |
21199 | handle the specific case of a function being GC'd by the linker. */ | |
21200 | ||
21201 | if (address == 0 && address < lowpc) | |
21202 | { | |
21203 | /* This line table is for a function which has been | |
21204 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
21205 | ||
518817b3 | 21206 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
21207 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
21208 | ||
21209 | complaint (&symfile_complaints, | |
21210 | _(".debug_line address at offset 0x%lx is 0 [in module %s]"), | |
21211 | line_offset, objfile_name (objfile)); | |
6f77053d PA |
21212 | m_record_line_callback = noop_record_line; |
21213 | /* Note: record_line_callback is left as noop_record_line until | |
21214 | we see DW_LNE_end_sequence. */ | |
924c2928 DE |
21215 | } |
21216 | } | |
21217 | ||
f3f5162e | 21218 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
21219 | Process the line number information in LH. |
21220 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
21221 | program in order to set included_p for every referenced header. */ | |
debd256d | 21222 | |
c906108c | 21223 | static void |
43f3e411 DE |
21224 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
21225 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 21226 | { |
d521ce57 TT |
21227 | const gdb_byte *line_ptr, *extended_end; |
21228 | const gdb_byte *line_end; | |
a8c50c1f | 21229 | unsigned int bytes_read, extended_len; |
699ca60a | 21230 | unsigned char op_code, extended_op; |
e142c38c | 21231 | CORE_ADDR baseaddr; |
518817b3 | 21232 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21233 | bfd *abfd = objfile->obfd; |
fbf65064 | 21234 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
21235 | /* True if we're recording line info (as opposed to building partial |
21236 | symtabs and just interested in finding include files mentioned by | |
21237 | the line number program). */ | |
21238 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c DJ |
21239 | |
21240 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 21241 | |
debd256d JB |
21242 | line_ptr = lh->statement_program_start; |
21243 | line_end = lh->statement_program_end; | |
c906108c SS |
21244 | |
21245 | /* Read the statement sequences until there's nothing left. */ | |
21246 | while (line_ptr < line_end) | |
21247 | { | |
6f77053d PA |
21248 | /* The DWARF line number program state machine. Reset the state |
21249 | machine at the start of each sequence. */ | |
21250 | lnp_state_machine state_machine (gdbarch, lh, record_lines_p); | |
21251 | bool end_sequence = false; | |
d9b3de22 | 21252 | |
8c43009f | 21253 | if (record_lines_p) |
c906108c | 21254 | { |
8c43009f PA |
21255 | /* Start a subfile for the current file of the state |
21256 | machine. */ | |
21257 | const file_entry *fe = state_machine.current_file (); | |
21258 | ||
21259 | if (fe != NULL) | |
21260 | dwarf2_start_subfile (fe->name, fe->include_dir (lh)); | |
c906108c SS |
21261 | } |
21262 | ||
a738430d | 21263 | /* Decode the table. */ |
d9b3de22 | 21264 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
21265 | { |
21266 | op_code = read_1_byte (abfd, line_ptr); | |
21267 | line_ptr += 1; | |
9aa1fe7e | 21268 | |
debd256d | 21269 | if (op_code >= lh->opcode_base) |
6e70227d | 21270 | { |
8e07a239 | 21271 | /* Special opcode. */ |
6f77053d | 21272 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
21273 | } |
21274 | else switch (op_code) | |
c906108c SS |
21275 | { |
21276 | case DW_LNS_extended_op: | |
3e43a32a MS |
21277 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
21278 | &bytes_read); | |
473b7be6 | 21279 | line_ptr += bytes_read; |
a8c50c1f | 21280 | extended_end = line_ptr + extended_len; |
c906108c SS |
21281 | extended_op = read_1_byte (abfd, line_ptr); |
21282 | line_ptr += 1; | |
21283 | switch (extended_op) | |
21284 | { | |
21285 | case DW_LNE_end_sequence: | |
6f77053d PA |
21286 | state_machine.handle_end_sequence (); |
21287 | end_sequence = true; | |
c906108c SS |
21288 | break; |
21289 | case DW_LNE_set_address: | |
d9b3de22 DE |
21290 | { |
21291 | CORE_ADDR address | |
21292 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
d9b3de22 | 21293 | line_ptr += bytes_read; |
6f77053d PA |
21294 | |
21295 | state_machine.check_line_address (cu, line_ptr, | |
21296 | lowpc, address); | |
21297 | state_machine.handle_set_address (baseaddr, address); | |
d9b3de22 | 21298 | } |
c906108c SS |
21299 | break; |
21300 | case DW_LNE_define_file: | |
debd256d | 21301 | { |
d521ce57 | 21302 | const char *cur_file; |
ecfb656c PA |
21303 | unsigned int mod_time, length; |
21304 | dir_index dindex; | |
6e70227d | 21305 | |
3e43a32a MS |
21306 | cur_file = read_direct_string (abfd, line_ptr, |
21307 | &bytes_read); | |
debd256d | 21308 | line_ptr += bytes_read; |
ecfb656c | 21309 | dindex = (dir_index) |
debd256d JB |
21310 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
21311 | line_ptr += bytes_read; | |
21312 | mod_time = | |
21313 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21314 | line_ptr += bytes_read; | |
21315 | length = | |
21316 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21317 | line_ptr += bytes_read; | |
ecfb656c | 21318 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 21319 | } |
c906108c | 21320 | break; |
d0c6ba3d | 21321 | case DW_LNE_set_discriminator: |
6f77053d PA |
21322 | { |
21323 | /* The discriminator is not interesting to the | |
21324 | debugger; just ignore it. We still need to | |
21325 | check its value though: | |
21326 | if there are consecutive entries for the same | |
21327 | (non-prologue) line we want to coalesce them. | |
21328 | PR 17276. */ | |
21329 | unsigned int discr | |
21330 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21331 | line_ptr += bytes_read; | |
21332 | ||
21333 | state_machine.handle_set_discriminator (discr); | |
21334 | } | |
d0c6ba3d | 21335 | break; |
c906108c | 21336 | default: |
4d3c2250 | 21337 | complaint (&symfile_complaints, |
e2e0b3e5 | 21338 | _("mangled .debug_line section")); |
debd256d | 21339 | return; |
c906108c | 21340 | } |
a8c50c1f DJ |
21341 | /* Make sure that we parsed the extended op correctly. If e.g. |
21342 | we expected a different address size than the producer used, | |
21343 | we may have read the wrong number of bytes. */ | |
21344 | if (line_ptr != extended_end) | |
21345 | { | |
21346 | complaint (&symfile_complaints, | |
21347 | _("mangled .debug_line section")); | |
21348 | return; | |
21349 | } | |
c906108c SS |
21350 | break; |
21351 | case DW_LNS_copy: | |
6f77053d | 21352 | state_machine.handle_copy (); |
c906108c SS |
21353 | break; |
21354 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21355 | { |
21356 | CORE_ADDR adjust | |
21357 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21358 | line_ptr += bytes_read; |
6f77053d PA |
21359 | |
21360 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21361 | } |
c906108c SS |
21362 | break; |
21363 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21364 | { |
21365 | int line_delta | |
21366 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21367 | line_ptr += bytes_read; |
6f77053d PA |
21368 | |
21369 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21370 | } |
c906108c SS |
21371 | break; |
21372 | case DW_LNS_set_file: | |
d9b3de22 | 21373 | { |
6f77053d | 21374 | file_name_index file |
ecfb656c PA |
21375 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21376 | &bytes_read); | |
d9b3de22 | 21377 | line_ptr += bytes_read; |
8c43009f | 21378 | |
6f77053d | 21379 | state_machine.handle_set_file (file); |
d9b3de22 | 21380 | } |
c906108c SS |
21381 | break; |
21382 | case DW_LNS_set_column: | |
0ad93d4f | 21383 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21384 | line_ptr += bytes_read; |
21385 | break; | |
21386 | case DW_LNS_negate_stmt: | |
6f77053d | 21387 | state_machine.handle_negate_stmt (); |
c906108c SS |
21388 | break; |
21389 | case DW_LNS_set_basic_block: | |
c906108c | 21390 | break; |
c2c6d25f JM |
21391 | /* Add to the address register of the state machine the |
21392 | address increment value corresponding to special opcode | |
a738430d MK |
21393 | 255. I.e., this value is scaled by the minimum |
21394 | instruction length since special opcode 255 would have | |
b021a221 | 21395 | scaled the increment. */ |
c906108c | 21396 | case DW_LNS_const_add_pc: |
6f77053d | 21397 | state_machine.handle_const_add_pc (); |
c906108c SS |
21398 | break; |
21399 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21400 | { |
6f77053d | 21401 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21402 | line_ptr += 2; |
6f77053d PA |
21403 | |
21404 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21405 | } |
c906108c | 21406 | break; |
9aa1fe7e | 21407 | default: |
a738430d MK |
21408 | { |
21409 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21410 | int i; |
a738430d | 21411 | |
debd256d | 21412 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21413 | { |
21414 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21415 | line_ptr += bytes_read; | |
21416 | } | |
21417 | } | |
c906108c SS |
21418 | } |
21419 | } | |
d9b3de22 DE |
21420 | |
21421 | if (!end_sequence) | |
21422 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21423 | ||
21424 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21425 | in which case we still finish recording the last line). */ | |
6f77053d | 21426 | state_machine.record_line (true); |
c906108c | 21427 | } |
f3f5162e DE |
21428 | } |
21429 | ||
21430 | /* Decode the Line Number Program (LNP) for the given line_header | |
21431 | structure and CU. The actual information extracted and the type | |
21432 | of structures created from the LNP depends on the value of PST. | |
21433 | ||
21434 | 1. If PST is NULL, then this procedure uses the data from the program | |
21435 | to create all necessary symbol tables, and their linetables. | |
21436 | ||
21437 | 2. If PST is not NULL, this procedure reads the program to determine | |
21438 | the list of files included by the unit represented by PST, and | |
21439 | builds all the associated partial symbol tables. | |
21440 | ||
21441 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21442 | It is used for relative paths in the line table. | |
21443 | NOTE: When processing partial symtabs (pst != NULL), | |
21444 | comp_dir == pst->dirname. | |
21445 | ||
21446 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21447 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21448 | symtab we don't use it in the name of the psymtabs we create. | |
21449 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21450 | A good testcase for this is mb-inline.exp. |
21451 | ||
527f3840 JK |
21452 | LOWPC is the lowest address in CU (or 0 if not known). |
21453 | ||
21454 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21455 | for its PC<->lines mapping information. Otherwise only the filename | |
21456 | table is read in. */ | |
f3f5162e DE |
21457 | |
21458 | static void | |
21459 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 21460 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 21461 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21462 | { |
518817b3 | 21463 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21464 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21465 | |
527f3840 JK |
21466 | if (decode_mapping) |
21467 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21468 | |
21469 | if (decode_for_pst_p) | |
21470 | { | |
21471 | int file_index; | |
21472 | ||
21473 | /* Now that we're done scanning the Line Header Program, we can | |
21474 | create the psymtab of each included file. */ | |
fff8551c | 21475 | for (file_index = 0; file_index < lh->file_names.size (); file_index++) |
aaa75496 JB |
21476 | if (lh->file_names[file_index].included_p == 1) |
21477 | { | |
c89b44cd | 21478 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21479 | const char *include_name = |
c89b44cd TT |
21480 | psymtab_include_file_name (lh, file_index, pst, comp_dir, |
21481 | &name_holder); | |
c6da4cef | 21482 | if (include_name != NULL) |
aaa75496 JB |
21483 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21484 | } | |
21485 | } | |
cb1df416 DJ |
21486 | else |
21487 | { | |
21488 | /* Make sure a symtab is created for every file, even files | |
21489 | which contain only variables (i.e. no code with associated | |
21490 | line numbers). */ | |
43f3e411 | 21491 | struct compunit_symtab *cust = buildsym_compunit_symtab (); |
cb1df416 | 21492 | int i; |
cb1df416 | 21493 | |
fff8551c | 21494 | for (i = 0; i < lh->file_names.size (); i++) |
cb1df416 | 21495 | { |
8c43009f | 21496 | file_entry &fe = lh->file_names[i]; |
9a619af0 | 21497 | |
8c43009f | 21498 | dwarf2_start_subfile (fe.name, fe.include_dir (lh)); |
cb1df416 | 21499 | |
cb1df416 | 21500 | if (current_subfile->symtab == NULL) |
43f3e411 DE |
21501 | { |
21502 | current_subfile->symtab | |
21503 | = allocate_symtab (cust, current_subfile->name); | |
21504 | } | |
8c43009f | 21505 | fe.symtab = current_subfile->symtab; |
cb1df416 DJ |
21506 | } |
21507 | } | |
c906108c SS |
21508 | } |
21509 | ||
21510 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21511 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21512 | or NULL if not known. |
c906108c SS |
21513 | This routine tries to keep line numbers from identical absolute and |
21514 | relative file names in a common subfile. | |
21515 | ||
21516 | Using the `list' example from the GDB testsuite, which resides in | |
21517 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21518 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21519 | ||
c5aa993b | 21520 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21521 | DW_AT_comp_dir: /compdir |
357e46e7 | 21522 | files.files[0].name: list0.h |
c5aa993b | 21523 | files.files[0].dir: /srcdir |
357e46e7 | 21524 | files.files[1].name: list0.c |
c5aa993b | 21525 | files.files[1].dir: /srcdir |
c906108c SS |
21526 | |
21527 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21528 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21529 | start_subfile will ensure that this happens provided that we pass the | |
21530 | concatenation of files.files[1].dir and files.files[1].name as the | |
21531 | subfile's name. */ | |
c906108c SS |
21532 | |
21533 | static void | |
4d663531 | 21534 | dwarf2_start_subfile (const char *filename, const char *dirname) |
c906108c | 21535 | { |
d521ce57 | 21536 | char *copy = NULL; |
4f1520fb | 21537 | |
4d663531 | 21538 | /* In order not to lose the line information directory, |
4f1520fb FR |
21539 | we concatenate it to the filename when it makes sense. |
21540 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21541 | information): ``The directory index is ignored for file names | |
21542 | that represent full path names''. Thus ignoring dirname in the | |
21543 | `else' branch below isn't an issue. */ | |
c906108c | 21544 | |
d5166ae1 | 21545 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
21546 | { |
21547 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
21548 | filename = copy; | |
21549 | } | |
c906108c | 21550 | |
4d663531 | 21551 | start_subfile (filename); |
4f1520fb | 21552 | |
d521ce57 TT |
21553 | if (copy != NULL) |
21554 | xfree (copy); | |
c906108c SS |
21555 | } |
21556 | ||
f4dc4d17 DE |
21557 | /* Start a symtab for DWARF. |
21558 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
21559 | ||
43f3e411 | 21560 | static struct compunit_symtab * |
f4dc4d17 | 21561 | dwarf2_start_symtab (struct dwarf2_cu *cu, |
15d034d0 | 21562 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 | 21563 | { |
43f3e411 | 21564 | struct compunit_symtab *cust |
518817b3 SM |
21565 | = start_symtab (cu->per_cu->dwarf2_per_objfile->objfile, name, comp_dir, |
21566 | low_pc, cu->language); | |
43f3e411 | 21567 | |
f4dc4d17 DE |
21568 | record_debugformat ("DWARF 2"); |
21569 | record_producer (cu->producer); | |
21570 | ||
21571 | /* We assume that we're processing GCC output. */ | |
21572 | processing_gcc_compilation = 2; | |
21573 | ||
4d4ec4e5 | 21574 | cu->processing_has_namespace_info = 0; |
43f3e411 DE |
21575 | |
21576 | return cust; | |
f4dc4d17 DE |
21577 | } |
21578 | ||
4c2df51b DJ |
21579 | static void |
21580 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21581 | struct dwarf2_cu *cu) |
4c2df51b | 21582 | { |
518817b3 | 21583 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
21584 | struct comp_unit_head *cu_header = &cu->header; |
21585 | ||
4c2df51b DJ |
21586 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21587 | code here to turn a symbol with DW_AT_external and a | |
21588 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21589 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21590 | with some versions of binutils) where shared libraries could have | |
21591 | relocations against symbols in their debug information - the | |
21592 | minimal symbol would have the right address, but the debug info | |
21593 | would not. It's no longer necessary, because we will explicitly | |
21594 | apply relocations when we read in the debug information now. */ | |
21595 | ||
21596 | /* A DW_AT_location attribute with no contents indicates that a | |
21597 | variable has been optimized away. */ | |
21598 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
21599 | { | |
f1e6e072 | 21600 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21601 | return; |
21602 | } | |
21603 | ||
21604 | /* Handle one degenerate form of location expression specially, to | |
21605 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
21606 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
21607 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
21608 | |
21609 | if (attr_form_is_block (attr) | |
3019eac3 DE |
21610 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
21611 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
21612 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
21613 | && (DW_BLOCK (attr)->size | |
21614 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 21615 | { |
891d2f0b | 21616 | unsigned int dummy; |
4c2df51b | 21617 | |
3019eac3 DE |
21618 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
21619 | SYMBOL_VALUE_ADDRESS (sym) = | |
21620 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
21621 | else | |
21622 | SYMBOL_VALUE_ADDRESS (sym) = | |
21623 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 21624 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
21625 | fixup_symbol_section (sym, objfile); |
21626 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
21627 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
21628 | return; |
21629 | } | |
21630 | ||
21631 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21632 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21633 | (i.e. when the value of a register or memory location is | |
21634 | referenced, or a thread-local block, etc.). Then again, it might | |
21635 | not be worthwhile. I'm assuming that it isn't unless performance | |
21636 | or memory numbers show me otherwise. */ | |
21637 | ||
f1e6e072 | 21638 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21639 | |
f1e6e072 | 21640 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 21641 | cu->has_loclist = 1; |
4c2df51b DJ |
21642 | } |
21643 | ||
c906108c SS |
21644 | /* Given a pointer to a DWARF information entry, figure out if we need |
21645 | to make a symbol table entry for it, and if so, create a new entry | |
21646 | and return a pointer to it. | |
21647 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21648 | used the passed type. |
21649 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21650 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21651 | |
21652 | static struct symbol * | |
5e2db402 TT |
21653 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21654 | struct symbol *space) | |
c906108c | 21655 | { |
518817b3 SM |
21656 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21657 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21658 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 21659 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 21660 | struct symbol *sym = NULL; |
15d034d0 | 21661 | const char *name; |
c906108c SS |
21662 | struct attribute *attr = NULL; |
21663 | struct attribute *attr2 = NULL; | |
e142c38c | 21664 | CORE_ADDR baseaddr; |
e37fd15a SW |
21665 | struct pending **list_to_add = NULL; |
21666 | ||
edb3359d | 21667 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
21668 | |
21669 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 21670 | |
94af9270 | 21671 | name = dwarf2_name (die, cu); |
c906108c SS |
21672 | if (name) |
21673 | { | |
94af9270 | 21674 | const char *linkagename; |
34eaf542 | 21675 | int suppress_add = 0; |
94af9270 | 21676 | |
34eaf542 TT |
21677 | if (space) |
21678 | sym = space; | |
21679 | else | |
e623cf5d | 21680 | sym = allocate_symbol (objfile); |
c906108c | 21681 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21682 | |
21683 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 21684 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
21685 | linkagename = dwarf2_physname (name, die, cu); |
21686 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 21687 | |
f55ee35c JK |
21688 | /* Fortran does not have mangling standard and the mangling does differ |
21689 | between gfortran, iFort etc. */ | |
21690 | if (cu->language == language_fortran | |
b250c185 | 21691 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 21692 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 21693 | dwarf2_full_name (name, die, cu), |
29df156d | 21694 | NULL); |
f55ee35c | 21695 | |
c906108c | 21696 | /* Default assumptions. |
c5aa993b | 21697 | Use the passed type or decode it from the die. */ |
176620f1 | 21698 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21699 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21700 | if (type != NULL) |
21701 | SYMBOL_TYPE (sym) = type; | |
21702 | else | |
e7c27a73 | 21703 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21704 | attr = dwarf2_attr (die, |
21705 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21706 | cu); | |
c906108c SS |
21707 | if (attr) |
21708 | { | |
21709 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
21710 | } | |
cb1df416 | 21711 | |
edb3359d DJ |
21712 | attr = dwarf2_attr (die, |
21713 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21714 | cu); | |
cb1df416 DJ |
21715 | if (attr) |
21716 | { | |
ecfb656c | 21717 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 21718 | struct file_entry *fe; |
9a619af0 | 21719 | |
ecfb656c PA |
21720 | if (cu->line_header != NULL) |
21721 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21722 | else |
21723 | fe = NULL; | |
21724 | ||
21725 | if (fe == NULL) | |
cb1df416 DJ |
21726 | complaint (&symfile_complaints, |
21727 | _("file index out of range")); | |
8c43009f PA |
21728 | else |
21729 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21730 | } |
21731 | ||
c906108c SS |
21732 | switch (die->tag) |
21733 | { | |
21734 | case DW_TAG_label: | |
e142c38c | 21735 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 21736 | if (attr) |
3e29f34a MR |
21737 | { |
21738 | CORE_ADDR addr; | |
21739 | ||
21740 | addr = attr_value_as_address (attr); | |
21741 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
21742 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
21743 | } | |
0f5238ed TT |
21744 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21745 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 21746 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 21747 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21748 | break; |
21749 | case DW_TAG_subprogram: | |
21750 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21751 | finish_block. */ | |
f1e6e072 | 21752 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21753 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
21754 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
21755 | || cu->language == language_ada) | |
c906108c | 21756 | { |
2cfa0c8d JB |
21757 | /* Subprograms marked external are stored as a global symbol. |
21758 | Ada subprograms, whether marked external or not, are always | |
21759 | stored as a global symbol, because we want to be able to | |
21760 | access them globally. For instance, we want to be able | |
21761 | to break on a nested subprogram without having to | |
21762 | specify the context. */ | |
e37fd15a | 21763 | list_to_add = &global_symbols; |
c906108c SS |
21764 | } |
21765 | else | |
21766 | { | |
e37fd15a | 21767 | list_to_add = cu->list_in_scope; |
c906108c SS |
21768 | } |
21769 | break; | |
edb3359d DJ |
21770 | case DW_TAG_inlined_subroutine: |
21771 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21772 | finish_block. */ | |
f1e6e072 | 21773 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21774 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21775 | list_to_add = cu->list_in_scope; |
edb3359d | 21776 | break; |
34eaf542 TT |
21777 | case DW_TAG_template_value_param: |
21778 | suppress_add = 1; | |
21779 | /* Fall through. */ | |
72929c62 | 21780 | case DW_TAG_constant: |
c906108c | 21781 | case DW_TAG_variable: |
254e6b9e | 21782 | case DW_TAG_member: |
0963b4bd MS |
21783 | /* Compilation with minimal debug info may result in |
21784 | variables with missing type entries. Change the | |
21785 | misleading `void' type to something sensible. */ | |
c906108c | 21786 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 21787 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21788 | |
e142c38c | 21789 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21790 | /* In the case of DW_TAG_member, we should only be called for |
21791 | static const members. */ | |
21792 | if (die->tag == DW_TAG_member) | |
21793 | { | |
3863f96c DE |
21794 | /* dwarf2_add_field uses die_is_declaration, |
21795 | so we do the same. */ | |
254e6b9e DE |
21796 | gdb_assert (die_is_declaration (die, cu)); |
21797 | gdb_assert (attr); | |
21798 | } | |
c906108c SS |
21799 | if (attr) |
21800 | { | |
e7c27a73 | 21801 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21802 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21803 | if (!suppress_add) |
34eaf542 TT |
21804 | { |
21805 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 21806 | list_to_add = &global_symbols; |
34eaf542 | 21807 | else |
e37fd15a | 21808 | list_to_add = cu->list_in_scope; |
34eaf542 | 21809 | } |
c906108c SS |
21810 | break; |
21811 | } | |
e142c38c | 21812 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
21813 | if (attr) |
21814 | { | |
e7c27a73 | 21815 | var_decode_location (attr, sym, cu); |
e142c38c | 21816 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21817 | |
21818 | /* Fortran explicitly imports any global symbols to the local | |
21819 | scope by DW_TAG_common_block. */ | |
21820 | if (cu->language == language_fortran && die->parent | |
21821 | && die->parent->tag == DW_TAG_common_block) | |
21822 | attr2 = NULL; | |
21823 | ||
caac4577 JG |
21824 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21825 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
21826 | && !dwarf2_per_objfile->has_section_at_zero) | |
21827 | { | |
21828 | /* When a static variable is eliminated by the linker, | |
21829 | the corresponding debug information is not stripped | |
21830 | out, but the variable address is set to null; | |
21831 | do not add such variables into symbol table. */ | |
21832 | } | |
21833 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21834 | { |
f55ee35c JK |
21835 | /* Workaround gfortran PR debug/40040 - it uses |
21836 | DW_AT_location for variables in -fPIC libraries which may | |
21837 | get overriden by other libraries/executable and get | |
21838 | a different address. Resolve it by the minimal symbol | |
21839 | which may come from inferior's executable using copy | |
21840 | relocation. Make this workaround only for gfortran as for | |
21841 | other compilers GDB cannot guess the minimal symbol | |
21842 | Fortran mangling kind. */ | |
21843 | if (cu->language == language_fortran && die->parent | |
21844 | && die->parent->tag == DW_TAG_module | |
21845 | && cu->producer | |
28586665 | 21846 | && startswith (cu->producer, "GNU Fortran")) |
f1e6e072 | 21847 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 21848 | |
1c809c68 TT |
21849 | /* A variable with DW_AT_external is never static, |
21850 | but it may be block-scoped. */ | |
21851 | list_to_add = (cu->list_in_scope == &file_symbols | |
21852 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 21853 | } |
c906108c | 21854 | else |
e37fd15a | 21855 | list_to_add = cu->list_in_scope; |
c906108c SS |
21856 | } |
21857 | else | |
21858 | { | |
21859 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21860 | If it is an external symbol and we have type information |
21861 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21862 | The address of the variable will then be determined from | |
21863 | the minimal symbol table whenever the variable is | |
21864 | referenced. */ | |
e142c38c | 21865 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21866 | |
21867 | /* Fortran explicitly imports any global symbols to the local | |
21868 | scope by DW_TAG_common_block. */ | |
21869 | if (cu->language == language_fortran && die->parent | |
21870 | && die->parent->tag == DW_TAG_common_block) | |
21871 | { | |
21872 | /* SYMBOL_CLASS doesn't matter here because | |
21873 | read_common_block is going to reset it. */ | |
21874 | if (!suppress_add) | |
21875 | list_to_add = cu->list_in_scope; | |
21876 | } | |
21877 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21878 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21879 | { |
0fe7935b DJ |
21880 | /* A variable with DW_AT_external is never static, but it |
21881 | may be block-scoped. */ | |
21882 | list_to_add = (cu->list_in_scope == &file_symbols | |
21883 | ? &global_symbols : cu->list_in_scope); | |
21884 | ||
f1e6e072 | 21885 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21886 | } |
442ddf59 JK |
21887 | else if (!die_is_declaration (die, cu)) |
21888 | { | |
21889 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21890 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21891 | if (!suppress_add) |
21892 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21893 | } |
c906108c SS |
21894 | } |
21895 | break; | |
21896 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
21897 | /* If we are inside a function, mark this as an argument. If |
21898 | not, we might be looking at an argument to an inlined function | |
21899 | when we do not have enough information to show inlined frames; | |
21900 | pretend it's a local variable in that case so that the user can | |
21901 | still see it. */ | |
21902 | if (context_stack_depth > 0 | |
21903 | && context_stack[context_stack_depth - 1].name != NULL) | |
21904 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 21905 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
21906 | if (attr) |
21907 | { | |
e7c27a73 | 21908 | var_decode_location (attr, sym, cu); |
c906108c | 21909 | } |
e142c38c | 21910 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
21911 | if (attr) |
21912 | { | |
e7c27a73 | 21913 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21914 | } |
f346a30d | 21915 | |
e37fd15a | 21916 | list_to_add = cu->list_in_scope; |
c906108c SS |
21917 | break; |
21918 | case DW_TAG_unspecified_parameters: | |
21919 | /* From varargs functions; gdb doesn't seem to have any | |
21920 | interest in this information, so just ignore it for now. | |
21921 | (FIXME?) */ | |
21922 | break; | |
34eaf542 TT |
21923 | case DW_TAG_template_type_param: |
21924 | suppress_add = 1; | |
21925 | /* Fall through. */ | |
c906108c | 21926 | case DW_TAG_class_type: |
680b30c7 | 21927 | case DW_TAG_interface_type: |
c906108c SS |
21928 | case DW_TAG_structure_type: |
21929 | case DW_TAG_union_type: | |
72019c9c | 21930 | case DW_TAG_set_type: |
c906108c | 21931 | case DW_TAG_enumeration_type: |
f1e6e072 | 21932 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21933 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21934 | |
63d06c5c | 21935 | { |
9c37b5ae | 21936 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21937 | really ever be static objects: otherwise, if you try |
21938 | to, say, break of a class's method and you're in a file | |
21939 | which doesn't mention that class, it won't work unless | |
21940 | the check for all static symbols in lookup_symbol_aux | |
21941 | saves you. See the OtherFileClass tests in | |
21942 | gdb.c++/namespace.exp. */ | |
21943 | ||
e37fd15a | 21944 | if (!suppress_add) |
34eaf542 | 21945 | { |
34eaf542 | 21946 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 21947 | && cu->language == language_cplus |
34eaf542 | 21948 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 21949 | |
64382290 | 21950 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21951 | ... }" also defines a typedef for "foo". */ |
64382290 | 21952 | if (cu->language == language_cplus |
45280282 | 21953 | || cu->language == language_ada |
c44af4eb TT |
21954 | || cu->language == language_d |
21955 | || cu->language == language_rust) | |
64382290 TT |
21956 | { |
21957 | /* The symbol's name is already allocated along | |
21958 | with this objfile, so we don't need to | |
21959 | duplicate it for the type. */ | |
21960 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
21961 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
21962 | } | |
63d06c5c DC |
21963 | } |
21964 | } | |
c906108c SS |
21965 | break; |
21966 | case DW_TAG_typedef: | |
f1e6e072 | 21967 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21968 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21969 | list_to_add = cu->list_in_scope; |
63d06c5c | 21970 | break; |
c906108c | 21971 | case DW_TAG_base_type: |
a02abb62 | 21972 | case DW_TAG_subrange_type: |
f1e6e072 | 21973 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21974 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21975 | list_to_add = cu->list_in_scope; |
c906108c SS |
21976 | break; |
21977 | case DW_TAG_enumerator: | |
e142c38c | 21978 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
21979 | if (attr) |
21980 | { | |
e7c27a73 | 21981 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21982 | } |
63d06c5c DC |
21983 | { |
21984 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21985 | DW_TAG_class_type, etc. block. */ | |
21986 | ||
e142c38c | 21987 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 21988 | && cu->language == language_cplus |
e142c38c | 21989 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 21990 | } |
c906108c | 21991 | break; |
74921315 | 21992 | case DW_TAG_imported_declaration: |
5c4e30ca | 21993 | case DW_TAG_namespace: |
f1e6e072 | 21994 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 21995 | list_to_add = &global_symbols; |
5c4e30ca | 21996 | break; |
530e8392 KB |
21997 | case DW_TAG_module: |
21998 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21999 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
22000 | list_to_add = &global_symbols; | |
22001 | break; | |
4357ac6c | 22002 | case DW_TAG_common_block: |
f1e6e072 | 22003 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
22004 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
22005 | add_symbol_to_list (sym, cu->list_in_scope); | |
22006 | break; | |
c906108c SS |
22007 | default: |
22008 | /* Not a tag we recognize. Hopefully we aren't processing | |
22009 | trash data, but since we must specifically ignore things | |
22010 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 22011 | this point. */ |
e2e0b3e5 | 22012 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 22013 | dwarf_tag_name (die->tag)); |
c906108c SS |
22014 | break; |
22015 | } | |
df8a16a1 | 22016 | |
e37fd15a SW |
22017 | if (suppress_add) |
22018 | { | |
22019 | sym->hash_next = objfile->template_symbols; | |
22020 | objfile->template_symbols = sym; | |
22021 | list_to_add = NULL; | |
22022 | } | |
22023 | ||
22024 | if (list_to_add != NULL) | |
22025 | add_symbol_to_list (sym, list_to_add); | |
22026 | ||
df8a16a1 DJ |
22027 | /* For the benefit of old versions of GCC, check for anonymous |
22028 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 22029 | if (!cu->processing_has_namespace_info |
94af9270 | 22030 | && cu->language == language_cplus) |
a10964d1 | 22031 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
22032 | } |
22033 | return (sym); | |
22034 | } | |
22035 | ||
98bfdba5 PA |
22036 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
22037 | zero-extend it as appropriate for the symbol's type. The DWARF | |
22038 | standard (v4) is not entirely clear about the meaning of using | |
22039 | DW_FORM_dataN for a constant with a signed type, where the type is | |
22040 | wider than the data. The conclusion of a discussion on the DWARF | |
22041 | list was that this is unspecified. We choose to always zero-extend | |
22042 | because that is the interpretation long in use by GCC. */ | |
c906108c | 22043 | |
98bfdba5 | 22044 | static gdb_byte * |
ff39bb5e | 22045 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 22046 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 22047 | { |
518817b3 | 22048 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
22049 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
22050 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
22051 | LONGEST l = DW_UNSND (attr); |
22052 | ||
22053 | if (bits < sizeof (*value) * 8) | |
22054 | { | |
22055 | l &= ((LONGEST) 1 << bits) - 1; | |
22056 | *value = l; | |
22057 | } | |
22058 | else if (bits == sizeof (*value) * 8) | |
22059 | *value = l; | |
22060 | else | |
22061 | { | |
224c3ddb | 22062 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
22063 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
22064 | return bytes; | |
22065 | } | |
22066 | ||
22067 | return NULL; | |
22068 | } | |
22069 | ||
22070 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
22071 | the value does not fit in *VALUE, set *BYTES - either already | |
22072 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
22073 | or, set *BATON, if we translated the constant to a location | |
22074 | expression. */ | |
22075 | ||
22076 | static void | |
ff39bb5e | 22077 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
22078 | const char *name, struct obstack *obstack, |
22079 | struct dwarf2_cu *cu, | |
d521ce57 | 22080 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
22081 | struct dwarf2_locexpr_baton **baton) |
22082 | { | |
518817b3 | 22083 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 22084 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 22085 | struct dwarf_block *blk; |
98bfdba5 PA |
22086 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
22087 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
22088 | ||
22089 | *value = 0; | |
22090 | *bytes = NULL; | |
22091 | *baton = NULL; | |
c906108c SS |
22092 | |
22093 | switch (attr->form) | |
22094 | { | |
22095 | case DW_FORM_addr: | |
3019eac3 | 22096 | case DW_FORM_GNU_addr_index: |
ac56253d | 22097 | { |
ac56253d TT |
22098 | gdb_byte *data; |
22099 | ||
98bfdba5 PA |
22100 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
22101 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 22102 | cu_header->addr_size, |
98bfdba5 | 22103 | TYPE_LENGTH (type)); |
ac56253d TT |
22104 | /* Symbols of this form are reasonably rare, so we just |
22105 | piggyback on the existing location code rather than writing | |
22106 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 22107 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
22108 | (*baton)->per_cu = cu->per_cu; |
22109 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 22110 | |
98bfdba5 | 22111 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 22112 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 22113 | (*baton)->data = data; |
ac56253d TT |
22114 | |
22115 | data[0] = DW_OP_addr; | |
22116 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
22117 | byte_order, DW_ADDR (attr)); | |
22118 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 22119 | } |
c906108c | 22120 | break; |
4ac36638 | 22121 | case DW_FORM_string: |
93b5768b | 22122 | case DW_FORM_strp: |
3019eac3 | 22123 | case DW_FORM_GNU_str_index: |
36586728 | 22124 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
22125 | /* DW_STRING is already allocated on the objfile obstack, point |
22126 | directly to it. */ | |
d521ce57 | 22127 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 22128 | break; |
c906108c SS |
22129 | case DW_FORM_block1: |
22130 | case DW_FORM_block2: | |
22131 | case DW_FORM_block4: | |
22132 | case DW_FORM_block: | |
2dc7f7b3 | 22133 | case DW_FORM_exprloc: |
0224619f | 22134 | case DW_FORM_data16: |
c906108c | 22135 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
22136 | if (TYPE_LENGTH (type) != blk->size) |
22137 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
22138 | TYPE_LENGTH (type)); | |
22139 | *bytes = blk->data; | |
c906108c | 22140 | break; |
2df3850c JM |
22141 | |
22142 | /* The DW_AT_const_value attributes are supposed to carry the | |
22143 | symbol's value "represented as it would be on the target | |
22144 | architecture." By the time we get here, it's already been | |
22145 | converted to host endianness, so we just need to sign- or | |
22146 | zero-extend it as appropriate. */ | |
22147 | case DW_FORM_data1: | |
3aef2284 | 22148 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 22149 | break; |
c906108c | 22150 | case DW_FORM_data2: |
3aef2284 | 22151 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 22152 | break; |
c906108c | 22153 | case DW_FORM_data4: |
3aef2284 | 22154 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 22155 | break; |
c906108c | 22156 | case DW_FORM_data8: |
3aef2284 | 22157 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
22158 | break; |
22159 | ||
c906108c | 22160 | case DW_FORM_sdata: |
663c44ac | 22161 | case DW_FORM_implicit_const: |
98bfdba5 | 22162 | *value = DW_SND (attr); |
2df3850c JM |
22163 | break; |
22164 | ||
c906108c | 22165 | case DW_FORM_udata: |
98bfdba5 | 22166 | *value = DW_UNSND (attr); |
c906108c | 22167 | break; |
2df3850c | 22168 | |
c906108c | 22169 | default: |
4d3c2250 | 22170 | complaint (&symfile_complaints, |
e2e0b3e5 | 22171 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 22172 | dwarf_form_name (attr->form)); |
98bfdba5 | 22173 | *value = 0; |
c906108c SS |
22174 | break; |
22175 | } | |
22176 | } | |
22177 | ||
2df3850c | 22178 | |
98bfdba5 PA |
22179 | /* Copy constant value from an attribute to a symbol. */ |
22180 | ||
2df3850c | 22181 | static void |
ff39bb5e | 22182 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 22183 | struct dwarf2_cu *cu) |
2df3850c | 22184 | { |
518817b3 | 22185 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 22186 | LONGEST value; |
d521ce57 | 22187 | const gdb_byte *bytes; |
98bfdba5 | 22188 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 22189 | |
98bfdba5 PA |
22190 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
22191 | SYMBOL_PRINT_NAME (sym), | |
22192 | &objfile->objfile_obstack, cu, | |
22193 | &value, &bytes, &baton); | |
2df3850c | 22194 | |
98bfdba5 PA |
22195 | if (baton != NULL) |
22196 | { | |
98bfdba5 | 22197 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 22198 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
22199 | } |
22200 | else if (bytes != NULL) | |
22201 | { | |
22202 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 22203 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
22204 | } |
22205 | else | |
22206 | { | |
22207 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 22208 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 22209 | } |
2df3850c JM |
22210 | } |
22211 | ||
c906108c SS |
22212 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
22213 | ||
22214 | static struct type * | |
e7c27a73 | 22215 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22216 | { |
c906108c | 22217 | struct attribute *type_attr; |
c906108c | 22218 | |
e142c38c | 22219 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
22220 | if (!type_attr) |
22221 | { | |
518817b3 | 22222 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 22223 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 22224 | return objfile_type (objfile)->builtin_void; |
c906108c | 22225 | } |
348e048f | 22226 | |
673bfd45 | 22227 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22228 | } |
22229 | ||
b4ba55a1 JB |
22230 | /* True iff CU's producer generates GNAT Ada auxiliary information |
22231 | that allows to find parallel types through that information instead | |
22232 | of having to do expensive parallel lookups by type name. */ | |
22233 | ||
22234 | static int | |
22235 | need_gnat_info (struct dwarf2_cu *cu) | |
22236 | { | |
de4cb04a JB |
22237 | /* Assume that the Ada compiler was GNAT, which always produces |
22238 | the auxiliary information. */ | |
22239 | return (cu->language == language_ada); | |
b4ba55a1 JB |
22240 | } |
22241 | ||
b4ba55a1 JB |
22242 | /* Return the auxiliary type of the die in question using its |
22243 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
22244 | attribute is not present. */ | |
22245 | ||
22246 | static struct type * | |
22247 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
22248 | { | |
b4ba55a1 | 22249 | struct attribute *type_attr; |
b4ba55a1 JB |
22250 | |
22251 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
22252 | if (!type_attr) | |
22253 | return NULL; | |
22254 | ||
673bfd45 | 22255 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
22256 | } |
22257 | ||
22258 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
22259 | descriptive type accordingly. */ | |
22260 | ||
22261 | static void | |
22262 | set_descriptive_type (struct type *type, struct die_info *die, | |
22263 | struct dwarf2_cu *cu) | |
22264 | { | |
22265 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
22266 | ||
22267 | if (descriptive_type) | |
22268 | { | |
22269 | ALLOCATE_GNAT_AUX_TYPE (type); | |
22270 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
22271 | } | |
22272 | } | |
22273 | ||
c906108c SS |
22274 | /* Return the containing type of the die in question using its |
22275 | DW_AT_containing_type attribute. */ | |
22276 | ||
22277 | static struct type * | |
e7c27a73 | 22278 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22279 | { |
c906108c | 22280 | struct attribute *type_attr; |
518817b3 | 22281 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 22282 | |
e142c38c | 22283 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
22284 | if (!type_attr) |
22285 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 22286 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 22287 | |
673bfd45 | 22288 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22289 | } |
22290 | ||
ac9ec31b DE |
22291 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
22292 | ||
22293 | static struct type * | |
22294 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
22295 | { | |
518817b3 SM |
22296 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22297 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
22298 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
22299 | char *message, *saved; | |
22300 | ||
9d8780f0 | 22301 | message = xstrprintf (_("<unknown type in %s, CU %s, DIE %s>"), |
4262abfb | 22302 | objfile_name (objfile), |
9d8780f0 SM |
22303 | sect_offset_str (cu->header.sect_off), |
22304 | sect_offset_str (die->sect_off)); | |
224c3ddb SM |
22305 | saved = (char *) obstack_copy0 (&objfile->objfile_obstack, |
22306 | message, strlen (message)); | |
ac9ec31b DE |
22307 | xfree (message); |
22308 | ||
19f392bc | 22309 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22310 | } |
22311 | ||
673bfd45 | 22312 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22313 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22314 | DW_AT_containing_type. | |
673bfd45 DE |
22315 | If there is no type substitute an error marker. */ |
22316 | ||
c906108c | 22317 | static struct type * |
ff39bb5e | 22318 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22319 | struct dwarf2_cu *cu) |
c906108c | 22320 | { |
518817b3 SM |
22321 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22322 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 22323 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
22324 | struct type *this_type; |
22325 | ||
ac9ec31b DE |
22326 | gdb_assert (attr->name == DW_AT_type |
22327 | || attr->name == DW_AT_GNAT_descriptive_type | |
22328 | || attr->name == DW_AT_containing_type); | |
22329 | ||
673bfd45 DE |
22330 | /* First see if we have it cached. */ |
22331 | ||
36586728 TT |
22332 | if (attr->form == DW_FORM_GNU_ref_alt) |
22333 | { | |
22334 | struct dwarf2_per_cu_data *per_cu; | |
9c541725 | 22335 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
36586728 | 22336 | |
ed2dc618 SM |
22337 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
22338 | dwarf2_per_objfile); | |
9c541725 | 22339 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 22340 | } |
7771576e | 22341 | else if (attr_form_is_ref (attr)) |
673bfd45 | 22342 | { |
9c541725 | 22343 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
673bfd45 | 22344 | |
9c541725 | 22345 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 22346 | } |
55f1336d | 22347 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22348 | { |
ac9ec31b | 22349 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 22350 | |
ac9ec31b | 22351 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22352 | } |
22353 | else | |
22354 | { | |
ac9ec31b DE |
22355 | complaint (&symfile_complaints, |
22356 | _("Dwarf Error: Bad type attribute %s in DIE" | |
9d8780f0 SM |
22357 | " at %s [in module %s]"), |
22358 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22359 | objfile_name (objfile)); |
ac9ec31b | 22360 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22361 | } |
22362 | ||
22363 | /* If not cached we need to read it in. */ | |
22364 | ||
22365 | if (this_type == NULL) | |
22366 | { | |
ac9ec31b | 22367 | struct die_info *type_die = NULL; |
673bfd45 DE |
22368 | struct dwarf2_cu *type_cu = cu; |
22369 | ||
7771576e | 22370 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
22371 | type_die = follow_die_ref (die, attr, &type_cu); |
22372 | if (type_die == NULL) | |
22373 | return build_error_marker_type (cu, die); | |
22374 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22375 | from an inter-CU reference and the type's CU got expanded before |
22376 | ours. */ | |
ac9ec31b | 22377 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22378 | } |
22379 | ||
22380 | /* If we still don't have a type use an error marker. */ | |
22381 | ||
22382 | if (this_type == NULL) | |
ac9ec31b | 22383 | return build_error_marker_type (cu, die); |
673bfd45 | 22384 | |
f792889a | 22385 | return this_type; |
c906108c SS |
22386 | } |
22387 | ||
673bfd45 DE |
22388 | /* Return the type in DIE, CU. |
22389 | Returns NULL for invalid types. | |
22390 | ||
02142a6c | 22391 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22392 | and only reads the die in if necessary. |
22393 | ||
22394 | NOTE: This can be called when reading in partial or full symbols. */ | |
22395 | ||
f792889a | 22396 | static struct type * |
e7c27a73 | 22397 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22398 | { |
f792889a DJ |
22399 | struct type *this_type; |
22400 | ||
22401 | this_type = get_die_type (die, cu); | |
22402 | if (this_type) | |
22403 | return this_type; | |
22404 | ||
673bfd45 DE |
22405 | return read_type_die_1 (die, cu); |
22406 | } | |
22407 | ||
22408 | /* Read the type in DIE, CU. | |
22409 | Returns NULL for invalid types. */ | |
22410 | ||
22411 | static struct type * | |
22412 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22413 | { | |
22414 | struct type *this_type = NULL; | |
22415 | ||
c906108c SS |
22416 | switch (die->tag) |
22417 | { | |
22418 | case DW_TAG_class_type: | |
680b30c7 | 22419 | case DW_TAG_interface_type: |
c906108c SS |
22420 | case DW_TAG_structure_type: |
22421 | case DW_TAG_union_type: | |
f792889a | 22422 | this_type = read_structure_type (die, cu); |
c906108c SS |
22423 | break; |
22424 | case DW_TAG_enumeration_type: | |
f792889a | 22425 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22426 | break; |
22427 | case DW_TAG_subprogram: | |
22428 | case DW_TAG_subroutine_type: | |
edb3359d | 22429 | case DW_TAG_inlined_subroutine: |
f792889a | 22430 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22431 | break; |
22432 | case DW_TAG_array_type: | |
f792889a | 22433 | this_type = read_array_type (die, cu); |
c906108c | 22434 | break; |
72019c9c | 22435 | case DW_TAG_set_type: |
f792889a | 22436 | this_type = read_set_type (die, cu); |
72019c9c | 22437 | break; |
c906108c | 22438 | case DW_TAG_pointer_type: |
f792889a | 22439 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22440 | break; |
22441 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22442 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22443 | break; |
22444 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22445 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22446 | break; | |
22447 | case DW_TAG_rvalue_reference_type: | |
22448 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22449 | break; |
22450 | case DW_TAG_const_type: | |
f792889a | 22451 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22452 | break; |
22453 | case DW_TAG_volatile_type: | |
f792889a | 22454 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22455 | break; |
06d66ee9 TT |
22456 | case DW_TAG_restrict_type: |
22457 | this_type = read_tag_restrict_type (die, cu); | |
22458 | break; | |
c906108c | 22459 | case DW_TAG_string_type: |
f792889a | 22460 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22461 | break; |
22462 | case DW_TAG_typedef: | |
f792889a | 22463 | this_type = read_typedef (die, cu); |
c906108c | 22464 | break; |
a02abb62 | 22465 | case DW_TAG_subrange_type: |
f792889a | 22466 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22467 | break; |
c906108c | 22468 | case DW_TAG_base_type: |
f792889a | 22469 | this_type = read_base_type (die, cu); |
c906108c | 22470 | break; |
81a17f79 | 22471 | case DW_TAG_unspecified_type: |
f792889a | 22472 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22473 | break; |
0114d602 DJ |
22474 | case DW_TAG_namespace: |
22475 | this_type = read_namespace_type (die, cu); | |
22476 | break; | |
f55ee35c JK |
22477 | case DW_TAG_module: |
22478 | this_type = read_module_type (die, cu); | |
22479 | break; | |
a2c2acaf MW |
22480 | case DW_TAG_atomic_type: |
22481 | this_type = read_tag_atomic_type (die, cu); | |
22482 | break; | |
c906108c | 22483 | default: |
3e43a32a MS |
22484 | complaint (&symfile_complaints, |
22485 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 22486 | dwarf_tag_name (die->tag)); |
c906108c SS |
22487 | break; |
22488 | } | |
63d06c5c | 22489 | |
f792889a | 22490 | return this_type; |
63d06c5c DC |
22491 | } |
22492 | ||
abc72ce4 DE |
22493 | /* See if we can figure out if the class lives in a namespace. We do |
22494 | this by looking for a member function; its demangled name will | |
22495 | contain namespace info, if there is any. | |
22496 | Return the computed name or NULL. | |
22497 | Space for the result is allocated on the objfile's obstack. | |
22498 | This is the full-die version of guess_partial_die_structure_name. | |
22499 | In this case we know DIE has no useful parent. */ | |
22500 | ||
22501 | static char * | |
22502 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
22503 | { | |
22504 | struct die_info *spec_die; | |
22505 | struct dwarf2_cu *spec_cu; | |
22506 | struct die_info *child; | |
518817b3 | 22507 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
22508 | |
22509 | spec_cu = cu; | |
22510 | spec_die = die_specification (die, &spec_cu); | |
22511 | if (spec_die != NULL) | |
22512 | { | |
22513 | die = spec_die; | |
22514 | cu = spec_cu; | |
22515 | } | |
22516 | ||
22517 | for (child = die->child; | |
22518 | child != NULL; | |
22519 | child = child->sibling) | |
22520 | { | |
22521 | if (child->tag == DW_TAG_subprogram) | |
22522 | { | |
73b9be8b | 22523 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22524 | |
7d45c7c3 | 22525 | if (linkage_name != NULL) |
abc72ce4 DE |
22526 | { |
22527 | char *actual_name | |
22528 | = language_class_name_from_physname (cu->language_defn, | |
7d45c7c3 | 22529 | linkage_name); |
abc72ce4 DE |
22530 | char *name = NULL; |
22531 | ||
22532 | if (actual_name != NULL) | |
22533 | { | |
15d034d0 | 22534 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22535 | |
22536 | if (die_name != NULL | |
22537 | && strcmp (die_name, actual_name) != 0) | |
22538 | { | |
22539 | /* Strip off the class name from the full name. | |
22540 | We want the prefix. */ | |
22541 | int die_name_len = strlen (die_name); | |
22542 | int actual_name_len = strlen (actual_name); | |
22543 | ||
22544 | /* Test for '::' as a sanity check. */ | |
22545 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
22546 | && actual_name[actual_name_len |
22547 | - die_name_len - 1] == ':') | |
224c3ddb | 22548 | name = (char *) obstack_copy0 ( |
e3b94546 | 22549 | &objfile->per_bfd->storage_obstack, |
224c3ddb | 22550 | actual_name, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22551 | } |
22552 | } | |
22553 | xfree (actual_name); | |
22554 | return name; | |
22555 | } | |
22556 | } | |
22557 | } | |
22558 | ||
22559 | return NULL; | |
22560 | } | |
22561 | ||
96408a79 SA |
22562 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22563 | prefix part in such case. See | |
22564 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22565 | ||
a121b7c1 | 22566 | static const char * |
96408a79 SA |
22567 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22568 | { | |
22569 | struct attribute *attr; | |
e6a959d6 | 22570 | const char *base; |
96408a79 SA |
22571 | |
22572 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22573 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22574 | return NULL; | |
22575 | ||
7d45c7c3 | 22576 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22577 | return NULL; |
22578 | ||
73b9be8b | 22579 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
22580 | if (attr == NULL || DW_STRING (attr) == NULL) |
22581 | return NULL; | |
22582 | ||
22583 | /* dwarf2_name had to be already called. */ | |
22584 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
22585 | ||
22586 | /* Strip the base name, keep any leading namespaces/classes. */ | |
22587 | base = strrchr (DW_STRING (attr), ':'); | |
22588 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
22589 | return ""; | |
22590 | ||
518817b3 | 22591 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e3b94546 | 22592 | return (char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
22593 | DW_STRING (attr), |
22594 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
22595 | } |
22596 | ||
fdde2d81 | 22597 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22598 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22599 | |
0114d602 DJ |
22600 | For example, if we're within the method foo() in the following |
22601 | code: | |
22602 | ||
22603 | namespace N { | |
22604 | class C { | |
22605 | void foo () { | |
22606 | } | |
22607 | }; | |
22608 | } | |
22609 | ||
22610 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22611 | |
0d5cff50 | 22612 | static const char * |
e142c38c | 22613 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22614 | { |
518817b3 SM |
22615 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22616 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
22617 | struct die_info *parent, *spec_die; |
22618 | struct dwarf2_cu *spec_cu; | |
22619 | struct type *parent_type; | |
a121b7c1 | 22620 | const char *retval; |
63d06c5c | 22621 | |
9c37b5ae | 22622 | if (cu->language != language_cplus |
c44af4eb TT |
22623 | && cu->language != language_fortran && cu->language != language_d |
22624 | && cu->language != language_rust) | |
0114d602 DJ |
22625 | return ""; |
22626 | ||
96408a79 SA |
22627 | retval = anonymous_struct_prefix (die, cu); |
22628 | if (retval) | |
22629 | return retval; | |
22630 | ||
0114d602 DJ |
22631 | /* We have to be careful in the presence of DW_AT_specification. |
22632 | For example, with GCC 3.4, given the code | |
22633 | ||
22634 | namespace N { | |
22635 | void foo() { | |
22636 | // Definition of N::foo. | |
22637 | } | |
22638 | } | |
22639 | ||
22640 | then we'll have a tree of DIEs like this: | |
22641 | ||
22642 | 1: DW_TAG_compile_unit | |
22643 | 2: DW_TAG_namespace // N | |
22644 | 3: DW_TAG_subprogram // declaration of N::foo | |
22645 | 4: DW_TAG_subprogram // definition of N::foo | |
22646 | DW_AT_specification // refers to die #3 | |
22647 | ||
22648 | Thus, when processing die #4, we have to pretend that we're in | |
22649 | the context of its DW_AT_specification, namely the contex of die | |
22650 | #3. */ | |
22651 | spec_cu = cu; | |
22652 | spec_die = die_specification (die, &spec_cu); | |
22653 | if (spec_die == NULL) | |
22654 | parent = die->parent; | |
22655 | else | |
63d06c5c | 22656 | { |
0114d602 DJ |
22657 | parent = spec_die->parent; |
22658 | cu = spec_cu; | |
63d06c5c | 22659 | } |
0114d602 DJ |
22660 | |
22661 | if (parent == NULL) | |
22662 | return ""; | |
98bfdba5 PA |
22663 | else if (parent->building_fullname) |
22664 | { | |
22665 | const char *name; | |
22666 | const char *parent_name; | |
22667 | ||
22668 | /* It has been seen on RealView 2.2 built binaries, | |
22669 | DW_TAG_template_type_param types actually _defined_ as | |
22670 | children of the parent class: | |
22671 | ||
22672 | enum E {}; | |
22673 | template class <class Enum> Class{}; | |
22674 | Class<enum E> class_e; | |
22675 | ||
22676 | 1: DW_TAG_class_type (Class) | |
22677 | 2: DW_TAG_enumeration_type (E) | |
22678 | 3: DW_TAG_enumerator (enum1:0) | |
22679 | 3: DW_TAG_enumerator (enum2:1) | |
22680 | ... | |
22681 | 2: DW_TAG_template_type_param | |
22682 | DW_AT_type DW_FORM_ref_udata (E) | |
22683 | ||
22684 | Besides being broken debug info, it can put GDB into an | |
22685 | infinite loop. Consider: | |
22686 | ||
22687 | When we're building the full name for Class<E>, we'll start | |
22688 | at Class, and go look over its template type parameters, | |
22689 | finding E. We'll then try to build the full name of E, and | |
22690 | reach here. We're now trying to build the full name of E, | |
22691 | and look over the parent DIE for containing scope. In the | |
22692 | broken case, if we followed the parent DIE of E, we'd again | |
22693 | find Class, and once again go look at its template type | |
22694 | arguments, etc., etc. Simply don't consider such parent die | |
22695 | as source-level parent of this die (it can't be, the language | |
22696 | doesn't allow it), and break the loop here. */ | |
22697 | name = dwarf2_name (die, cu); | |
22698 | parent_name = dwarf2_name (parent, cu); | |
22699 | complaint (&symfile_complaints, | |
22700 | _("template param type '%s' defined within parent '%s'"), | |
22701 | name ? name : "<unknown>", | |
22702 | parent_name ? parent_name : "<unknown>"); | |
22703 | return ""; | |
22704 | } | |
63d06c5c | 22705 | else |
0114d602 DJ |
22706 | switch (parent->tag) |
22707 | { | |
63d06c5c | 22708 | case DW_TAG_namespace: |
0114d602 | 22709 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22710 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22711 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22712 | Work around this problem here. */ | |
22713 | if (cu->language == language_cplus | |
22714 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
22715 | return ""; | |
0114d602 DJ |
22716 | /* We give a name to even anonymous namespaces. */ |
22717 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 22718 | case DW_TAG_class_type: |
680b30c7 | 22719 | case DW_TAG_interface_type: |
63d06c5c | 22720 | case DW_TAG_structure_type: |
0114d602 | 22721 | case DW_TAG_union_type: |
f55ee35c | 22722 | case DW_TAG_module: |
0114d602 DJ |
22723 | parent_type = read_type_die (parent, cu); |
22724 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
22725 | return TYPE_TAG_NAME (parent_type); | |
22726 | else | |
22727 | /* An anonymous structure is only allowed non-static data | |
22728 | members; no typedefs, no member functions, et cetera. | |
22729 | So it does not need a prefix. */ | |
22730 | return ""; | |
abc72ce4 | 22731 | case DW_TAG_compile_unit: |
95554aad | 22732 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22733 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22734 | if (cu->language == language_cplus | |
8b70b953 | 22735 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
22736 | && die->child != NULL |
22737 | && (die->tag == DW_TAG_class_type | |
22738 | || die->tag == DW_TAG_structure_type | |
22739 | || die->tag == DW_TAG_union_type)) | |
22740 | { | |
22741 | char *name = guess_full_die_structure_name (die, cu); | |
22742 | if (name != NULL) | |
22743 | return name; | |
22744 | } | |
22745 | return ""; | |
3d567982 TT |
22746 | case DW_TAG_enumeration_type: |
22747 | parent_type = read_type_die (parent, cu); | |
22748 | if (TYPE_DECLARED_CLASS (parent_type)) | |
22749 | { | |
22750 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
22751 | return TYPE_TAG_NAME (parent_type); | |
22752 | return ""; | |
22753 | } | |
22754 | /* Fall through. */ | |
63d06c5c | 22755 | default: |
8176b9b8 | 22756 | return determine_prefix (parent, cu); |
63d06c5c | 22757 | } |
63d06c5c DC |
22758 | } |
22759 | ||
3e43a32a MS |
22760 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22761 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22762 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22763 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22764 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22765 | |
f55ee35c | 22766 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22767 | |
22768 | static char * | |
f55ee35c JK |
22769 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
22770 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 22771 | { |
f55ee35c | 22772 | const char *lead = ""; |
5c315b68 | 22773 | const char *sep; |
63d06c5c | 22774 | |
3e43a32a MS |
22775 | if (suffix == NULL || suffix[0] == '\0' |
22776 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22777 | sep = ""; |
45280282 IB |
22778 | else if (cu->language == language_d) |
22779 | { | |
22780 | /* For D, the 'main' function could be defined in any module, but it | |
22781 | should never be prefixed. */ | |
22782 | if (strcmp (suffix, "D main") == 0) | |
22783 | { | |
22784 | prefix = ""; | |
22785 | sep = ""; | |
22786 | } | |
22787 | else | |
22788 | sep = "."; | |
22789 | } | |
f55ee35c JK |
22790 | else if (cu->language == language_fortran && physname) |
22791 | { | |
22792 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22793 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22794 | ||
22795 | lead = "__"; | |
22796 | sep = "_MOD_"; | |
22797 | } | |
987504bb JJ |
22798 | else |
22799 | sep = "::"; | |
63d06c5c | 22800 | |
6dd47d34 DE |
22801 | if (prefix == NULL) |
22802 | prefix = ""; | |
22803 | if (suffix == NULL) | |
22804 | suffix = ""; | |
22805 | ||
987504bb JJ |
22806 | if (obs == NULL) |
22807 | { | |
3e43a32a | 22808 | char *retval |
224c3ddb SM |
22809 | = ((char *) |
22810 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22811 | |
f55ee35c JK |
22812 | strcpy (retval, lead); |
22813 | strcat (retval, prefix); | |
6dd47d34 DE |
22814 | strcat (retval, sep); |
22815 | strcat (retval, suffix); | |
63d06c5c DC |
22816 | return retval; |
22817 | } | |
987504bb JJ |
22818 | else |
22819 | { | |
22820 | /* We have an obstack. */ | |
f55ee35c | 22821 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22822 | } |
63d06c5c DC |
22823 | } |
22824 | ||
c906108c SS |
22825 | /* Return sibling of die, NULL if no sibling. */ |
22826 | ||
f9aca02d | 22827 | static struct die_info * |
fba45db2 | 22828 | sibling_die (struct die_info *die) |
c906108c | 22829 | { |
639d11d3 | 22830 | return die->sibling; |
c906108c SS |
22831 | } |
22832 | ||
71c25dea TT |
22833 | /* Get name of a die, return NULL if not found. */ |
22834 | ||
15d034d0 TT |
22835 | static const char * |
22836 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
22837 | struct obstack *obstack) |
22838 | { | |
22839 | if (name && cu->language == language_cplus) | |
22840 | { | |
2f408ecb | 22841 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 22842 | |
2f408ecb | 22843 | if (!canon_name.empty ()) |
71c25dea | 22844 | { |
2f408ecb PA |
22845 | if (canon_name != name) |
22846 | name = (const char *) obstack_copy0 (obstack, | |
22847 | canon_name.c_str (), | |
22848 | canon_name.length ()); | |
71c25dea TT |
22849 | } |
22850 | } | |
22851 | ||
22852 | return name; | |
c906108c SS |
22853 | } |
22854 | ||
96553a0c DE |
22855 | /* Get name of a die, return NULL if not found. |
22856 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22857 | |
15d034d0 | 22858 | static const char * |
e142c38c | 22859 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22860 | { |
22861 | struct attribute *attr; | |
518817b3 | 22862 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 22863 | |
e142c38c | 22864 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22865 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22866 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22867 | && die->tag != DW_TAG_class_type |
22868 | && die->tag != DW_TAG_interface_type | |
22869 | && die->tag != DW_TAG_structure_type | |
22870 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22871 | return NULL; |
22872 | ||
22873 | switch (die->tag) | |
22874 | { | |
22875 | case DW_TAG_compile_unit: | |
95554aad | 22876 | case DW_TAG_partial_unit: |
71c25dea TT |
22877 | /* Compilation units have a DW_AT_name that is a filename, not |
22878 | a source language identifier. */ | |
22879 | case DW_TAG_enumeration_type: | |
22880 | case DW_TAG_enumerator: | |
22881 | /* These tags always have simple identifiers already; no need | |
22882 | to canonicalize them. */ | |
22883 | return DW_STRING (attr); | |
907af001 | 22884 | |
96553a0c DE |
22885 | case DW_TAG_namespace: |
22886 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22887 | return DW_STRING (attr); | |
22888 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22889 | ||
907af001 UW |
22890 | case DW_TAG_class_type: |
22891 | case DW_TAG_interface_type: | |
22892 | case DW_TAG_structure_type: | |
22893 | case DW_TAG_union_type: | |
22894 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22895 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22896 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22897 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22898 | if (attr && DW_STRING (attr) |
61012eef GB |
22899 | && (startswith (DW_STRING (attr), "._") |
22900 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22901 | return NULL; |
53832f31 TT |
22902 | |
22903 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22904 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22905 | if (!attr || DW_STRING (attr) == NULL) | |
22906 | { | |
df5c6c50 | 22907 | char *demangled = NULL; |
53832f31 | 22908 | |
73b9be8b | 22909 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22910 | if (attr == NULL || DW_STRING (attr) == NULL) |
22911 | return NULL; | |
22912 | ||
df5c6c50 JK |
22913 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22914 | call for the same DIE. */ | |
22915 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 22916 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
22917 | |
22918 | if (demangled) | |
22919 | { | |
e6a959d6 | 22920 | const char *base; |
96408a79 | 22921 | |
53832f31 | 22922 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 22923 | DW_STRING (attr) |
224c3ddb | 22924 | = ((const char *) |
e3b94546 | 22925 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 22926 | demangled, strlen (demangled))); |
53832f31 TT |
22927 | DW_STRING_IS_CANONICAL (attr) = 1; |
22928 | xfree (demangled); | |
96408a79 SA |
22929 | |
22930 | /* Strip any leading namespaces/classes, keep only the base name. | |
22931 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22932 | base = strrchr (DW_STRING (attr), ':'); | |
22933 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22934 | return &base[1]; | |
22935 | else | |
22936 | return DW_STRING (attr); | |
53832f31 TT |
22937 | } |
22938 | } | |
907af001 UW |
22939 | break; |
22940 | ||
71c25dea | 22941 | default: |
907af001 UW |
22942 | break; |
22943 | } | |
22944 | ||
22945 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22946 | { | |
22947 | DW_STRING (attr) | |
22948 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
e3b94546 | 22949 | &objfile->per_bfd->storage_obstack); |
907af001 | 22950 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22951 | } |
907af001 | 22952 | return DW_STRING (attr); |
9219021c DC |
22953 | } |
22954 | ||
22955 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22956 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22957 | containing the return value on output. */ | |
9219021c DC |
22958 | |
22959 | static struct die_info * | |
f2f0e013 | 22960 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22961 | { |
22962 | struct attribute *attr; | |
9219021c | 22963 | |
f2f0e013 | 22964 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22965 | if (attr == NULL) |
22966 | return NULL; | |
22967 | ||
f2f0e013 | 22968 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22969 | } |
22970 | ||
c906108c SS |
22971 | /* Convert a DIE tag into its string name. */ |
22972 | ||
f39c6ffd | 22973 | static const char * |
aa1ee363 | 22974 | dwarf_tag_name (unsigned tag) |
c906108c | 22975 | { |
f39c6ffd TT |
22976 | const char *name = get_DW_TAG_name (tag); |
22977 | ||
22978 | if (name == NULL) | |
22979 | return "DW_TAG_<unknown>"; | |
22980 | ||
22981 | return name; | |
c906108c SS |
22982 | } |
22983 | ||
22984 | /* Convert a DWARF attribute code into its string name. */ | |
22985 | ||
f39c6ffd | 22986 | static const char * |
aa1ee363 | 22987 | dwarf_attr_name (unsigned attr) |
c906108c | 22988 | { |
f39c6ffd TT |
22989 | const char *name; |
22990 | ||
c764a876 | 22991 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
22992 | if (attr == DW_AT_MIPS_fde) |
22993 | return "DW_AT_MIPS_fde"; | |
22994 | #else | |
22995 | if (attr == DW_AT_HP_block_index) | |
22996 | return "DW_AT_HP_block_index"; | |
c764a876 | 22997 | #endif |
f39c6ffd TT |
22998 | |
22999 | name = get_DW_AT_name (attr); | |
23000 | ||
23001 | if (name == NULL) | |
23002 | return "DW_AT_<unknown>"; | |
23003 | ||
23004 | return name; | |
c906108c SS |
23005 | } |
23006 | ||
23007 | /* Convert a DWARF value form code into its string name. */ | |
23008 | ||
f39c6ffd | 23009 | static const char * |
aa1ee363 | 23010 | dwarf_form_name (unsigned form) |
c906108c | 23011 | { |
f39c6ffd TT |
23012 | const char *name = get_DW_FORM_name (form); |
23013 | ||
23014 | if (name == NULL) | |
23015 | return "DW_FORM_<unknown>"; | |
23016 | ||
23017 | return name; | |
c906108c SS |
23018 | } |
23019 | ||
a121b7c1 | 23020 | static const char * |
fba45db2 | 23021 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
23022 | { |
23023 | if (mybool) | |
23024 | return "TRUE"; | |
23025 | else | |
23026 | return "FALSE"; | |
23027 | } | |
23028 | ||
23029 | /* Convert a DWARF type code into its string name. */ | |
23030 | ||
f39c6ffd | 23031 | static const char * |
aa1ee363 | 23032 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 23033 | { |
f39c6ffd | 23034 | const char *name = get_DW_ATE_name (enc); |
c906108c | 23035 | |
f39c6ffd TT |
23036 | if (name == NULL) |
23037 | return "DW_ATE_<unknown>"; | |
c906108c | 23038 | |
f39c6ffd | 23039 | return name; |
c906108c | 23040 | } |
c906108c | 23041 | |
f9aca02d | 23042 | static void |
d97bc12b | 23043 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
23044 | { |
23045 | unsigned int i; | |
23046 | ||
d97bc12b | 23047 | print_spaces (indent, f); |
9d8780f0 | 23048 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 23049 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 23050 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
23051 | |
23052 | if (die->parent != NULL) | |
23053 | { | |
23054 | print_spaces (indent, f); | |
9d8780f0 SM |
23055 | fprintf_unfiltered (f, " parent at offset: %s\n", |
23056 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
23057 | } |
23058 | ||
23059 | print_spaces (indent, f); | |
23060 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 23061 | dwarf_bool_name (die->child != NULL)); |
c906108c | 23062 | |
d97bc12b DE |
23063 | print_spaces (indent, f); |
23064 | fprintf_unfiltered (f, " attributes:\n"); | |
23065 | ||
c906108c SS |
23066 | for (i = 0; i < die->num_attrs; ++i) |
23067 | { | |
d97bc12b DE |
23068 | print_spaces (indent, f); |
23069 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
23070 | dwarf_attr_name (die->attrs[i].name), |
23071 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 23072 | |
c906108c SS |
23073 | switch (die->attrs[i].form) |
23074 | { | |
c906108c | 23075 | case DW_FORM_addr: |
3019eac3 | 23076 | case DW_FORM_GNU_addr_index: |
d97bc12b | 23077 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 23078 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
23079 | break; |
23080 | case DW_FORM_block2: | |
23081 | case DW_FORM_block4: | |
23082 | case DW_FORM_block: | |
23083 | case DW_FORM_block1: | |
56eb65bd SP |
23084 | fprintf_unfiltered (f, "block: size %s", |
23085 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 23086 | break; |
2dc7f7b3 | 23087 | case DW_FORM_exprloc: |
56eb65bd SP |
23088 | fprintf_unfiltered (f, "expression: size %s", |
23089 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 23090 | break; |
0224619f JK |
23091 | case DW_FORM_data16: |
23092 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
23093 | break; | |
4568ecf9 DE |
23094 | case DW_FORM_ref_addr: |
23095 | fprintf_unfiltered (f, "ref address: "); | |
23096 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
23097 | break; | |
36586728 TT |
23098 | case DW_FORM_GNU_ref_alt: |
23099 | fprintf_unfiltered (f, "alt ref address: "); | |
23100 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
23101 | break; | |
10b3939b DJ |
23102 | case DW_FORM_ref1: |
23103 | case DW_FORM_ref2: | |
23104 | case DW_FORM_ref4: | |
4568ecf9 DE |
23105 | case DW_FORM_ref8: |
23106 | case DW_FORM_ref_udata: | |
d97bc12b | 23107 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 23108 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 23109 | break; |
c906108c SS |
23110 | case DW_FORM_data1: |
23111 | case DW_FORM_data2: | |
23112 | case DW_FORM_data4: | |
ce5d95e1 | 23113 | case DW_FORM_data8: |
c906108c SS |
23114 | case DW_FORM_udata: |
23115 | case DW_FORM_sdata: | |
43bbcdc2 PH |
23116 | fprintf_unfiltered (f, "constant: %s", |
23117 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 23118 | break; |
2dc7f7b3 TT |
23119 | case DW_FORM_sec_offset: |
23120 | fprintf_unfiltered (f, "section offset: %s", | |
23121 | pulongest (DW_UNSND (&die->attrs[i]))); | |
23122 | break; | |
55f1336d | 23123 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
23124 | fprintf_unfiltered (f, "signature: %s", |
23125 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 23126 | break; |
c906108c | 23127 | case DW_FORM_string: |
4bdf3d34 | 23128 | case DW_FORM_strp: |
43988095 | 23129 | case DW_FORM_line_strp: |
3019eac3 | 23130 | case DW_FORM_GNU_str_index: |
36586728 | 23131 | case DW_FORM_GNU_strp_alt: |
8285870a | 23132 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 23133 | DW_STRING (&die->attrs[i]) |
8285870a JK |
23134 | ? DW_STRING (&die->attrs[i]) : "", |
23135 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
23136 | break; |
23137 | case DW_FORM_flag: | |
23138 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 23139 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 23140 | else |
d97bc12b | 23141 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 23142 | break; |
2dc7f7b3 TT |
23143 | case DW_FORM_flag_present: |
23144 | fprintf_unfiltered (f, "flag: TRUE"); | |
23145 | break; | |
a8329558 | 23146 | case DW_FORM_indirect: |
0963b4bd MS |
23147 | /* The reader will have reduced the indirect form to |
23148 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
23149 | fprintf_unfiltered (f, |
23150 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 23151 | break; |
663c44ac JK |
23152 | case DW_FORM_implicit_const: |
23153 | fprintf_unfiltered (f, "constant: %s", | |
23154 | plongest (DW_SND (&die->attrs[i]))); | |
23155 | break; | |
c906108c | 23156 | default: |
d97bc12b | 23157 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 23158 | die->attrs[i].form); |
d97bc12b | 23159 | break; |
c906108c | 23160 | } |
d97bc12b | 23161 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
23162 | } |
23163 | } | |
23164 | ||
f9aca02d | 23165 | static void |
d97bc12b | 23166 | dump_die_for_error (struct die_info *die) |
c906108c | 23167 | { |
d97bc12b DE |
23168 | dump_die_shallow (gdb_stderr, 0, die); |
23169 | } | |
23170 | ||
23171 | static void | |
23172 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
23173 | { | |
23174 | int indent = level * 4; | |
23175 | ||
23176 | gdb_assert (die != NULL); | |
23177 | ||
23178 | if (level >= max_level) | |
23179 | return; | |
23180 | ||
23181 | dump_die_shallow (f, indent, die); | |
23182 | ||
23183 | if (die->child != NULL) | |
c906108c | 23184 | { |
d97bc12b DE |
23185 | print_spaces (indent, f); |
23186 | fprintf_unfiltered (f, " Children:"); | |
23187 | if (level + 1 < max_level) | |
23188 | { | |
23189 | fprintf_unfiltered (f, "\n"); | |
23190 | dump_die_1 (f, level + 1, max_level, die->child); | |
23191 | } | |
23192 | else | |
23193 | { | |
3e43a32a MS |
23194 | fprintf_unfiltered (f, |
23195 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
23196 | } |
23197 | } | |
23198 | ||
23199 | if (die->sibling != NULL && level > 0) | |
23200 | { | |
23201 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
23202 | } |
23203 | } | |
23204 | ||
d97bc12b DE |
23205 | /* This is called from the pdie macro in gdbinit.in. |
23206 | It's not static so gcc will keep a copy callable from gdb. */ | |
23207 | ||
23208 | void | |
23209 | dump_die (struct die_info *die, int max_level) | |
23210 | { | |
23211 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
23212 | } | |
23213 | ||
f9aca02d | 23214 | static void |
51545339 | 23215 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 23216 | { |
51545339 | 23217 | void **slot; |
c906108c | 23218 | |
9c541725 PA |
23219 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
23220 | to_underlying (die->sect_off), | |
b64f50a1 | 23221 | INSERT); |
51545339 DJ |
23222 | |
23223 | *slot = die; | |
c906108c SS |
23224 | } |
23225 | ||
b64f50a1 JK |
23226 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
23227 | required kind. */ | |
23228 | ||
23229 | static sect_offset | |
ff39bb5e | 23230 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 23231 | { |
7771576e | 23232 | if (attr_form_is_ref (attr)) |
9c541725 | 23233 | return (sect_offset) DW_UNSND (attr); |
93311388 DE |
23234 | |
23235 | complaint (&symfile_complaints, | |
23236 | _("unsupported die ref attribute form: '%s'"), | |
23237 | dwarf_form_name (attr->form)); | |
9c541725 | 23238 | return {}; |
c906108c SS |
23239 | } |
23240 | ||
43bbcdc2 PH |
23241 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
23242 | * the value held by the attribute is not constant. */ | |
a02abb62 | 23243 | |
43bbcdc2 | 23244 | static LONGEST |
ff39bb5e | 23245 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 | 23246 | { |
663c44ac | 23247 | if (attr->form == DW_FORM_sdata || attr->form == DW_FORM_implicit_const) |
a02abb62 JB |
23248 | return DW_SND (attr); |
23249 | else if (attr->form == DW_FORM_udata | |
23250 | || attr->form == DW_FORM_data1 | |
23251 | || attr->form == DW_FORM_data2 | |
23252 | || attr->form == DW_FORM_data4 | |
23253 | || attr->form == DW_FORM_data8) | |
23254 | return DW_UNSND (attr); | |
23255 | else | |
23256 | { | |
0224619f | 23257 | /* For DW_FORM_data16 see attr_form_is_constant. */ |
3e43a32a MS |
23258 | complaint (&symfile_complaints, |
23259 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
23260 | dwarf_form_name (attr->form)); |
23261 | return default_value; | |
23262 | } | |
23263 | } | |
23264 | ||
348e048f DE |
23265 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
23266 | On entry *REF_CU is the CU of SRC_DIE. | |
23267 | On exit *REF_CU is the CU of the result. */ | |
23268 | ||
23269 | static struct die_info * | |
ff39bb5e | 23270 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
23271 | struct dwarf2_cu **ref_cu) |
23272 | { | |
23273 | struct die_info *die; | |
23274 | ||
7771576e | 23275 | if (attr_form_is_ref (attr)) |
348e048f | 23276 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 23277 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
23278 | die = follow_die_sig (src_die, attr, ref_cu); |
23279 | else | |
23280 | { | |
23281 | dump_die_for_error (src_die); | |
23282 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 23283 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
23284 | } |
23285 | ||
23286 | return die; | |
03dd20cc DJ |
23287 | } |
23288 | ||
5c631832 | 23289 | /* Follow reference OFFSET. |
673bfd45 DE |
23290 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
23291 | On exit *REF_CU is the CU of the result. | |
23292 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 23293 | |
f9aca02d | 23294 | static struct die_info * |
9c541725 | 23295 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 23296 | struct dwarf2_cu **ref_cu) |
c906108c | 23297 | { |
10b3939b | 23298 | struct die_info temp_die; |
f2f0e013 | 23299 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
23300 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23301 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 23302 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
10b3939b | 23303 | |
348e048f DE |
23304 | gdb_assert (cu->per_cu != NULL); |
23305 | ||
98bfdba5 PA |
23306 | target_cu = cu; |
23307 | ||
3019eac3 | 23308 | if (cu->per_cu->is_debug_types) |
348e048f DE |
23309 | { |
23310 | /* .debug_types CUs cannot reference anything outside their CU. | |
23311 | If they need to, they have to reference a signatured type via | |
55f1336d | 23312 | DW_FORM_ref_sig8. */ |
9c541725 | 23313 | if (!offset_in_cu_p (&cu->header, sect_off)) |
5c631832 | 23314 | return NULL; |
348e048f | 23315 | } |
36586728 | 23316 | else if (offset_in_dwz != cu->per_cu->is_dwz |
9c541725 | 23317 | || !offset_in_cu_p (&cu->header, sect_off)) |
10b3939b DJ |
23318 | { |
23319 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 23320 | |
9c541725 | 23321 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 23322 | dwarf2_per_objfile); |
03dd20cc DJ |
23323 | |
23324 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
23325 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
23326 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 23327 | |
10b3939b DJ |
23328 | target_cu = per_cu->cu; |
23329 | } | |
98bfdba5 PA |
23330 | else if (cu->dies == NULL) |
23331 | { | |
23332 | /* We're loading full DIEs during partial symbol reading. */ | |
23333 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 23334 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 23335 | } |
c906108c | 23336 | |
f2f0e013 | 23337 | *ref_cu = target_cu; |
9c541725 | 23338 | temp_die.sect_off = sect_off; |
9a3c8263 | 23339 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
23340 | &temp_die, |
23341 | to_underlying (sect_off)); | |
5c631832 | 23342 | } |
10b3939b | 23343 | |
5c631832 JK |
23344 | /* Follow reference attribute ATTR of SRC_DIE. |
23345 | On entry *REF_CU is the CU of SRC_DIE. | |
23346 | On exit *REF_CU is the CU of the result. */ | |
23347 | ||
23348 | static struct die_info * | |
ff39bb5e | 23349 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23350 | struct dwarf2_cu **ref_cu) |
23351 | { | |
9c541725 | 23352 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
23353 | struct dwarf2_cu *cu = *ref_cu; |
23354 | struct die_info *die; | |
23355 | ||
9c541725 | 23356 | die = follow_die_offset (sect_off, |
36586728 TT |
23357 | (attr->form == DW_FORM_GNU_ref_alt |
23358 | || cu->per_cu->is_dwz), | |
23359 | ref_cu); | |
5c631832 | 23360 | if (!die) |
9d8780f0 SM |
23361 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23362 | "at %s [in module %s]"), | |
23363 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 23364 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 23365 | |
5c631832 JK |
23366 | return die; |
23367 | } | |
23368 | ||
9c541725 | 23369 | /* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU. |
d83e736b | 23370 | Returned value is intended for DW_OP_call*. Returned |
e3b94546 SM |
23371 | dwarf2_locexpr_baton->data has lifetime of |
23372 | PER_CU->DWARF2_PER_OBJFILE->OBJFILE. */ | |
5c631832 JK |
23373 | |
23374 | struct dwarf2_locexpr_baton | |
9c541725 | 23375 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
8b9737bf TT |
23376 | struct dwarf2_per_cu_data *per_cu, |
23377 | CORE_ADDR (*get_frame_pc) (void *baton), | |
23378 | void *baton) | |
5c631832 | 23379 | { |
918dd910 | 23380 | struct dwarf2_cu *cu; |
5c631832 JK |
23381 | struct die_info *die; |
23382 | struct attribute *attr; | |
23383 | struct dwarf2_locexpr_baton retval; | |
e3b94546 | 23384 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
ed2dc618 SM |
23385 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23386 | = get_dwarf2_per_objfile (objfile); | |
8cf6f0b1 | 23387 | |
918dd910 JK |
23388 | if (per_cu->cu == NULL) |
23389 | load_cu (per_cu); | |
23390 | cu = per_cu->cu; | |
cc12ce38 DE |
23391 | if (cu == NULL) |
23392 | { | |
23393 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23394 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23395 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23396 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23397 | } |
918dd910 | 23398 | |
9c541725 | 23399 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23400 | if (!die) |
9d8780f0 SM |
23401 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23402 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23403 | |
23404 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23405 | if (!attr) | |
23406 | { | |
e103e986 JK |
23407 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23408 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23409 | |
e103e986 | 23410 | retval.data = NULL; |
5c631832 JK |
23411 | retval.size = 0; |
23412 | } | |
8cf6f0b1 TT |
23413 | else if (attr_form_is_section_offset (attr)) |
23414 | { | |
23415 | struct dwarf2_loclist_baton loclist_baton; | |
23416 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
23417 | size_t size; | |
23418 | ||
23419 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23420 | ||
23421 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23422 | &size, pc); | |
23423 | retval.size = size; | |
23424 | } | |
5c631832 JK |
23425 | else |
23426 | { | |
23427 | if (!attr_form_is_block (attr)) | |
9d8780f0 | 23428 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23429 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23430 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
23431 | |
23432 | retval.data = DW_BLOCK (attr)->data; | |
23433 | retval.size = DW_BLOCK (attr)->size; | |
23434 | } | |
23435 | retval.per_cu = cu->per_cu; | |
918dd910 | 23436 | |
ed2dc618 | 23437 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 23438 | |
5c631832 | 23439 | return retval; |
348e048f DE |
23440 | } |
23441 | ||
8b9737bf TT |
23442 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
23443 | offset. */ | |
23444 | ||
23445 | struct dwarf2_locexpr_baton | |
23446 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
23447 | struct dwarf2_per_cu_data *per_cu, | |
23448 | CORE_ADDR (*get_frame_pc) (void *baton), | |
23449 | void *baton) | |
23450 | { | |
9c541725 | 23451 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23452 | |
9c541725 | 23453 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
23454 | } |
23455 | ||
b6807d98 TT |
23456 | /* Write a constant of a given type as target-ordered bytes into |
23457 | OBSTACK. */ | |
23458 | ||
23459 | static const gdb_byte * | |
23460 | write_constant_as_bytes (struct obstack *obstack, | |
23461 | enum bfd_endian byte_order, | |
23462 | struct type *type, | |
23463 | ULONGEST value, | |
23464 | LONGEST *len) | |
23465 | { | |
23466 | gdb_byte *result; | |
23467 | ||
23468 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23469 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23470 | store_unsigned_integer (result, *len, byte_order, value); |
23471 | ||
23472 | return result; | |
23473 | } | |
23474 | ||
23475 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
23476 | pointer to the constant bytes and set LEN to the length of the | |
23477 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
23478 | does not have a DW_AT_const_value, return NULL. */ | |
23479 | ||
23480 | const gdb_byte * | |
9c541725 | 23481 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
b6807d98 TT |
23482 | struct dwarf2_per_cu_data *per_cu, |
23483 | struct obstack *obstack, | |
23484 | LONGEST *len) | |
23485 | { | |
23486 | struct dwarf2_cu *cu; | |
23487 | struct die_info *die; | |
23488 | struct attribute *attr; | |
23489 | const gdb_byte *result = NULL; | |
23490 | struct type *type; | |
23491 | LONGEST value; | |
23492 | enum bfd_endian byte_order; | |
e3b94546 | 23493 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 23494 | |
b6807d98 TT |
23495 | if (per_cu->cu == NULL) |
23496 | load_cu (per_cu); | |
23497 | cu = per_cu->cu; | |
cc12ce38 DE |
23498 | if (cu == NULL) |
23499 | { | |
23500 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23501 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23502 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23503 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23504 | } |
b6807d98 | 23505 | |
9c541725 | 23506 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23507 | if (!die) |
9d8780f0 SM |
23508 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23509 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23510 | |
23511 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23512 | if (attr == NULL) | |
23513 | return NULL; | |
23514 | ||
e3b94546 | 23515 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23516 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23517 | ||
23518 | switch (attr->form) | |
23519 | { | |
23520 | case DW_FORM_addr: | |
23521 | case DW_FORM_GNU_addr_index: | |
23522 | { | |
23523 | gdb_byte *tem; | |
23524 | ||
23525 | *len = cu->header.addr_size; | |
224c3ddb | 23526 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23527 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
23528 | result = tem; | |
23529 | } | |
23530 | break; | |
23531 | case DW_FORM_string: | |
23532 | case DW_FORM_strp: | |
23533 | case DW_FORM_GNU_str_index: | |
23534 | case DW_FORM_GNU_strp_alt: | |
23535 | /* DW_STRING is already allocated on the objfile obstack, point | |
23536 | directly to it. */ | |
23537 | result = (const gdb_byte *) DW_STRING (attr); | |
23538 | *len = strlen (DW_STRING (attr)); | |
23539 | break; | |
23540 | case DW_FORM_block1: | |
23541 | case DW_FORM_block2: | |
23542 | case DW_FORM_block4: | |
23543 | case DW_FORM_block: | |
23544 | case DW_FORM_exprloc: | |
0224619f | 23545 | case DW_FORM_data16: |
b6807d98 TT |
23546 | result = DW_BLOCK (attr)->data; |
23547 | *len = DW_BLOCK (attr)->size; | |
23548 | break; | |
23549 | ||
23550 | /* The DW_AT_const_value attributes are supposed to carry the | |
23551 | symbol's value "represented as it would be on the target | |
23552 | architecture." By the time we get here, it's already been | |
23553 | converted to host endianness, so we just need to sign- or | |
23554 | zero-extend it as appropriate. */ | |
23555 | case DW_FORM_data1: | |
23556 | type = die_type (die, cu); | |
23557 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23558 | if (result == NULL) | |
23559 | result = write_constant_as_bytes (obstack, byte_order, | |
23560 | type, value, len); | |
23561 | break; | |
23562 | case DW_FORM_data2: | |
23563 | type = die_type (die, cu); | |
23564 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23565 | if (result == NULL) | |
23566 | result = write_constant_as_bytes (obstack, byte_order, | |
23567 | type, value, len); | |
23568 | break; | |
23569 | case DW_FORM_data4: | |
23570 | type = die_type (die, cu); | |
23571 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23572 | if (result == NULL) | |
23573 | result = write_constant_as_bytes (obstack, byte_order, | |
23574 | type, value, len); | |
23575 | break; | |
23576 | case DW_FORM_data8: | |
23577 | type = die_type (die, cu); | |
23578 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23579 | if (result == NULL) | |
23580 | result = write_constant_as_bytes (obstack, byte_order, | |
23581 | type, value, len); | |
23582 | break; | |
23583 | ||
23584 | case DW_FORM_sdata: | |
663c44ac | 23585 | case DW_FORM_implicit_const: |
b6807d98 TT |
23586 | type = die_type (die, cu); |
23587 | result = write_constant_as_bytes (obstack, byte_order, | |
23588 | type, DW_SND (attr), len); | |
23589 | break; | |
23590 | ||
23591 | case DW_FORM_udata: | |
23592 | type = die_type (die, cu); | |
23593 | result = write_constant_as_bytes (obstack, byte_order, | |
23594 | type, DW_UNSND (attr), len); | |
23595 | break; | |
23596 | ||
23597 | default: | |
23598 | complaint (&symfile_complaints, | |
23599 | _("unsupported const value attribute form: '%s'"), | |
23600 | dwarf_form_name (attr->form)); | |
23601 | break; | |
23602 | } | |
23603 | ||
23604 | return result; | |
23605 | } | |
23606 | ||
7942e96e AA |
23607 | /* Return the type of the die at OFFSET in PER_CU. Return NULL if no |
23608 | valid type for this die is found. */ | |
23609 | ||
23610 | struct type * | |
9c541725 | 23611 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
7942e96e AA |
23612 | struct dwarf2_per_cu_data *per_cu) |
23613 | { | |
23614 | struct dwarf2_cu *cu; | |
23615 | struct die_info *die; | |
23616 | ||
7942e96e AA |
23617 | if (per_cu->cu == NULL) |
23618 | load_cu (per_cu); | |
23619 | cu = per_cu->cu; | |
23620 | if (!cu) | |
23621 | return NULL; | |
23622 | ||
9c541725 | 23623 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23624 | if (!die) |
23625 | return NULL; | |
23626 | ||
23627 | return die_type (die, cu); | |
23628 | } | |
23629 | ||
8a9b8146 TT |
23630 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
23631 | PER_CU. */ | |
23632 | ||
23633 | struct type * | |
b64f50a1 | 23634 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
23635 | struct dwarf2_per_cu_data *per_cu) |
23636 | { | |
9c541725 | 23637 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 23638 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
23639 | } |
23640 | ||
ac9ec31b | 23641 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23642 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23643 | On exit *REF_CU is the CU of the result. |
23644 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23645 | |
23646 | static struct die_info * | |
ac9ec31b DE |
23647 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23648 | struct dwarf2_cu **ref_cu) | |
348e048f | 23649 | { |
348e048f | 23650 | struct die_info temp_die; |
348e048f DE |
23651 | struct dwarf2_cu *sig_cu; |
23652 | struct die_info *die; | |
23653 | ||
ac9ec31b DE |
23654 | /* While it might be nice to assert sig_type->type == NULL here, |
23655 | we can get here for DW_AT_imported_declaration where we need | |
23656 | the DIE not the type. */ | |
348e048f DE |
23657 | |
23658 | /* If necessary, add it to the queue and load its DIEs. */ | |
23659 | ||
95554aad | 23660 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 23661 | read_signatured_type (sig_type); |
348e048f | 23662 | |
348e048f | 23663 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 23664 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23665 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23666 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23667 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23668 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23669 | if (die) |
23670 | { | |
ed2dc618 | 23671 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 23672 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 23673 | |
796a7ff8 DE |
23674 | /* For .gdb_index version 7 keep track of included TUs. |
23675 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
23676 | if (dwarf2_per_objfile->index_table != NULL | |
23677 | && dwarf2_per_objfile->index_table->version <= 7) | |
23678 | { | |
23679 | VEC_safe_push (dwarf2_per_cu_ptr, | |
23680 | (*ref_cu)->per_cu->imported_symtabs, | |
23681 | sig_cu->per_cu); | |
23682 | } | |
23683 | ||
348e048f DE |
23684 | *ref_cu = sig_cu; |
23685 | return die; | |
23686 | } | |
23687 | ||
ac9ec31b DE |
23688 | return NULL; |
23689 | } | |
23690 | ||
23691 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23692 | On entry *REF_CU is the CU of SRC_DIE. | |
23693 | On exit *REF_CU is the CU of the result. | |
23694 | The result is the DIE of the type. | |
23695 | If the referenced type cannot be found an error is thrown. */ | |
23696 | ||
23697 | static struct die_info * | |
ff39bb5e | 23698 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23699 | struct dwarf2_cu **ref_cu) |
23700 | { | |
23701 | ULONGEST signature = DW_SIGNATURE (attr); | |
23702 | struct signatured_type *sig_type; | |
23703 | struct die_info *die; | |
23704 | ||
23705 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23706 | ||
a2ce51a0 | 23707 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23708 | /* sig_type will be NULL if the signatured type is missing from |
23709 | the debug info. */ | |
23710 | if (sig_type == NULL) | |
23711 | { | |
23712 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23713 | " from DIE at %s [in module %s]"), |
23714 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23715 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23716 | } |
23717 | ||
23718 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23719 | if (die == NULL) | |
23720 | { | |
23721 | dump_die_for_error (src_die); | |
23722 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23723 | " from DIE at %s [in module %s]"), |
23724 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23725 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23726 | } |
23727 | ||
23728 | return die; | |
23729 | } | |
23730 | ||
23731 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23732 | reading in and processing the type unit if necessary. */ | |
23733 | ||
23734 | static struct type * | |
23735 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23736 | struct dwarf2_cu *cu) | |
23737 | { | |
518817b3 SM |
23738 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23739 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
23740 | struct signatured_type *sig_type; |
23741 | struct dwarf2_cu *type_cu; | |
23742 | struct die_info *type_die; | |
23743 | struct type *type; | |
23744 | ||
a2ce51a0 | 23745 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23746 | /* sig_type will be NULL if the signatured type is missing from |
23747 | the debug info. */ | |
23748 | if (sig_type == NULL) | |
23749 | { | |
23750 | complaint (&symfile_complaints, | |
23751 | _("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23752 | " from DIE at %s [in module %s]"), |
23753 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23754 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23755 | return build_error_marker_type (cu, die); |
23756 | } | |
23757 | ||
23758 | /* If we already know the type we're done. */ | |
23759 | if (sig_type->type != NULL) | |
23760 | return sig_type->type; | |
23761 | ||
23762 | type_cu = cu; | |
23763 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23764 | if (type_die != NULL) | |
23765 | { | |
23766 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23767 | is created. This is important, for example, because for c++ classes | |
23768 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23769 | type = read_type_die (type_die, type_cu); | |
23770 | if (type == NULL) | |
23771 | { | |
23772 | complaint (&symfile_complaints, | |
23773 | _("Dwarf Error: Cannot build signatured type %s" | |
9d8780f0 SM |
23774 | " referenced from DIE at %s [in module %s]"), |
23775 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23776 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23777 | type = build_error_marker_type (cu, die); |
23778 | } | |
23779 | } | |
23780 | else | |
23781 | { | |
23782 | complaint (&symfile_complaints, | |
23783 | _("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23784 | " from DIE at %s [in module %s]"), |
23785 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23786 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23787 | type = build_error_marker_type (cu, die); |
23788 | } | |
23789 | sig_type->type = type; | |
23790 | ||
23791 | return type; | |
23792 | } | |
23793 | ||
23794 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23795 | reading in and processing the type unit if necessary. */ | |
23796 | ||
23797 | static struct type * | |
ff39bb5e | 23798 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23799 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23800 | { |
23801 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 23802 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
23803 | { |
23804 | struct dwarf2_cu *type_cu = cu; | |
23805 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23806 | ||
23807 | return read_type_die (type_die, type_cu); | |
23808 | } | |
23809 | else if (attr->form == DW_FORM_ref_sig8) | |
23810 | { | |
23811 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
23812 | } | |
23813 | else | |
23814 | { | |
518817b3 SM |
23815 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23816 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 23817 | |
ac9ec31b DE |
23818 | complaint (&symfile_complaints, |
23819 | _("Dwarf Error: DW_AT_signature has bad form %s in DIE" | |
9d8780f0 SM |
23820 | " at %s [in module %s]"), |
23821 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 23822 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23823 | return build_error_marker_type (cu, die); |
23824 | } | |
348e048f DE |
23825 | } |
23826 | ||
e5fe5e75 | 23827 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23828 | |
23829 | static void | |
e5fe5e75 | 23830 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 23831 | { |
52dc124a | 23832 | struct signatured_type *sig_type; |
348e048f | 23833 | |
f4dc4d17 DE |
23834 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
23835 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
23836 | ||
6721b2ec DE |
23837 | /* We have the per_cu, but we need the signatured_type. |
23838 | Fortunately this is an easy translation. */ | |
23839 | gdb_assert (per_cu->is_debug_types); | |
23840 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23841 | |
6721b2ec | 23842 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23843 | |
52dc124a | 23844 | read_signatured_type (sig_type); |
348e048f | 23845 | |
6721b2ec | 23846 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
23847 | } |
23848 | ||
dee91e82 DE |
23849 | /* die_reader_func for read_signatured_type. |
23850 | This is identical to load_full_comp_unit_reader, | |
23851 | but is kept separate for now. */ | |
348e048f DE |
23852 | |
23853 | static void | |
dee91e82 | 23854 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 23855 | const gdb_byte *info_ptr, |
dee91e82 DE |
23856 | struct die_info *comp_unit_die, |
23857 | int has_children, | |
23858 | void *data) | |
348e048f | 23859 | { |
dee91e82 | 23860 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 23861 | |
dee91e82 DE |
23862 | gdb_assert (cu->die_hash == NULL); |
23863 | cu->die_hash = | |
23864 | htab_create_alloc_ex (cu->header.length / 12, | |
23865 | die_hash, | |
23866 | die_eq, | |
23867 | NULL, | |
23868 | &cu->comp_unit_obstack, | |
23869 | hashtab_obstack_allocate, | |
23870 | dummy_obstack_deallocate); | |
348e048f | 23871 | |
dee91e82 DE |
23872 | if (has_children) |
23873 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
23874 | &info_ptr, comp_unit_die); | |
23875 | cu->dies = comp_unit_die; | |
23876 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
23877 | |
23878 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 23879 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 23880 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
23881 | or we won't be able to build types correctly. |
23882 | Similarly, if we do not read the producer, we can not apply | |
23883 | producer-specific interpretation. */ | |
95554aad | 23884 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 23885 | } |
348e048f | 23886 | |
3019eac3 DE |
23887 | /* Read in a signatured type and build its CU and DIEs. |
23888 | If the type is a stub for the real type in a DWO file, | |
23889 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23890 | |
23891 | static void | |
23892 | read_signatured_type (struct signatured_type *sig_type) | |
23893 | { | |
23894 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 23895 | |
3019eac3 | 23896 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 23897 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23898 | |
f4dc4d17 DE |
23899 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
23900 | read_signatured_type_reader, NULL); | |
7ee85ab1 | 23901 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
23902 | } |
23903 | ||
c906108c SS |
23904 | /* Decode simple location descriptions. |
23905 | Given a pointer to a dwarf block that defines a location, compute | |
23906 | the location and return the value. | |
23907 | ||
4cecd739 DJ |
23908 | NOTE drow/2003-11-18: This function is called in two situations |
23909 | now: for the address of static or global variables (partial symbols | |
23910 | only) and for offsets into structures which are expected to be | |
23911 | (more or less) constant. The partial symbol case should go away, | |
23912 | and only the constant case should remain. That will let this | |
23913 | function complain more accurately. A few special modes are allowed | |
23914 | without complaint for global variables (for instance, global | |
23915 | register values and thread-local values). | |
c906108c SS |
23916 | |
23917 | A location description containing no operations indicates that the | |
4cecd739 | 23918 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
23919 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
23920 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
23921 | complaint. |
23922 | ||
23923 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
23924 | |
23925 | static CORE_ADDR | |
e7c27a73 | 23926 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 23927 | { |
518817b3 | 23928 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
23929 | size_t i; |
23930 | size_t size = blk->size; | |
d521ce57 | 23931 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
23932 | CORE_ADDR stack[64]; |
23933 | int stacki; | |
23934 | unsigned int bytes_read, unsnd; | |
23935 | gdb_byte op; | |
c906108c | 23936 | |
21ae7a4d JK |
23937 | i = 0; |
23938 | stacki = 0; | |
23939 | stack[stacki] = 0; | |
23940 | stack[++stacki] = 0; | |
23941 | ||
23942 | while (i < size) | |
23943 | { | |
23944 | op = data[i++]; | |
23945 | switch (op) | |
23946 | { | |
23947 | case DW_OP_lit0: | |
23948 | case DW_OP_lit1: | |
23949 | case DW_OP_lit2: | |
23950 | case DW_OP_lit3: | |
23951 | case DW_OP_lit4: | |
23952 | case DW_OP_lit5: | |
23953 | case DW_OP_lit6: | |
23954 | case DW_OP_lit7: | |
23955 | case DW_OP_lit8: | |
23956 | case DW_OP_lit9: | |
23957 | case DW_OP_lit10: | |
23958 | case DW_OP_lit11: | |
23959 | case DW_OP_lit12: | |
23960 | case DW_OP_lit13: | |
23961 | case DW_OP_lit14: | |
23962 | case DW_OP_lit15: | |
23963 | case DW_OP_lit16: | |
23964 | case DW_OP_lit17: | |
23965 | case DW_OP_lit18: | |
23966 | case DW_OP_lit19: | |
23967 | case DW_OP_lit20: | |
23968 | case DW_OP_lit21: | |
23969 | case DW_OP_lit22: | |
23970 | case DW_OP_lit23: | |
23971 | case DW_OP_lit24: | |
23972 | case DW_OP_lit25: | |
23973 | case DW_OP_lit26: | |
23974 | case DW_OP_lit27: | |
23975 | case DW_OP_lit28: | |
23976 | case DW_OP_lit29: | |
23977 | case DW_OP_lit30: | |
23978 | case DW_OP_lit31: | |
23979 | stack[++stacki] = op - DW_OP_lit0; | |
23980 | break; | |
f1bea926 | 23981 | |
21ae7a4d JK |
23982 | case DW_OP_reg0: |
23983 | case DW_OP_reg1: | |
23984 | case DW_OP_reg2: | |
23985 | case DW_OP_reg3: | |
23986 | case DW_OP_reg4: | |
23987 | case DW_OP_reg5: | |
23988 | case DW_OP_reg6: | |
23989 | case DW_OP_reg7: | |
23990 | case DW_OP_reg8: | |
23991 | case DW_OP_reg9: | |
23992 | case DW_OP_reg10: | |
23993 | case DW_OP_reg11: | |
23994 | case DW_OP_reg12: | |
23995 | case DW_OP_reg13: | |
23996 | case DW_OP_reg14: | |
23997 | case DW_OP_reg15: | |
23998 | case DW_OP_reg16: | |
23999 | case DW_OP_reg17: | |
24000 | case DW_OP_reg18: | |
24001 | case DW_OP_reg19: | |
24002 | case DW_OP_reg20: | |
24003 | case DW_OP_reg21: | |
24004 | case DW_OP_reg22: | |
24005 | case DW_OP_reg23: | |
24006 | case DW_OP_reg24: | |
24007 | case DW_OP_reg25: | |
24008 | case DW_OP_reg26: | |
24009 | case DW_OP_reg27: | |
24010 | case DW_OP_reg28: | |
24011 | case DW_OP_reg29: | |
24012 | case DW_OP_reg30: | |
24013 | case DW_OP_reg31: | |
24014 | stack[++stacki] = op - DW_OP_reg0; | |
24015 | if (i < size) | |
24016 | dwarf2_complex_location_expr_complaint (); | |
24017 | break; | |
c906108c | 24018 | |
21ae7a4d JK |
24019 | case DW_OP_regx: |
24020 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
24021 | i += bytes_read; | |
24022 | stack[++stacki] = unsnd; | |
24023 | if (i < size) | |
24024 | dwarf2_complex_location_expr_complaint (); | |
24025 | break; | |
c906108c | 24026 | |
21ae7a4d JK |
24027 | case DW_OP_addr: |
24028 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
24029 | cu, &bytes_read); | |
24030 | i += bytes_read; | |
24031 | break; | |
d53d4ac5 | 24032 | |
21ae7a4d JK |
24033 | case DW_OP_const1u: |
24034 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
24035 | i += 1; | |
24036 | break; | |
24037 | ||
24038 | case DW_OP_const1s: | |
24039 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
24040 | i += 1; | |
24041 | break; | |
24042 | ||
24043 | case DW_OP_const2u: | |
24044 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
24045 | i += 2; | |
24046 | break; | |
24047 | ||
24048 | case DW_OP_const2s: | |
24049 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
24050 | i += 2; | |
24051 | break; | |
d53d4ac5 | 24052 | |
21ae7a4d JK |
24053 | case DW_OP_const4u: |
24054 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
24055 | i += 4; | |
24056 | break; | |
24057 | ||
24058 | case DW_OP_const4s: | |
24059 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
24060 | i += 4; | |
24061 | break; | |
24062 | ||
585861ea JK |
24063 | case DW_OP_const8u: |
24064 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
24065 | i += 8; | |
24066 | break; | |
24067 | ||
21ae7a4d JK |
24068 | case DW_OP_constu: |
24069 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
24070 | &bytes_read); | |
24071 | i += bytes_read; | |
24072 | break; | |
24073 | ||
24074 | case DW_OP_consts: | |
24075 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
24076 | i += bytes_read; | |
24077 | break; | |
24078 | ||
24079 | case DW_OP_dup: | |
24080 | stack[stacki + 1] = stack[stacki]; | |
24081 | stacki++; | |
24082 | break; | |
24083 | ||
24084 | case DW_OP_plus: | |
24085 | stack[stacki - 1] += stack[stacki]; | |
24086 | stacki--; | |
24087 | break; | |
24088 | ||
24089 | case DW_OP_plus_uconst: | |
24090 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
24091 | &bytes_read); | |
24092 | i += bytes_read; | |
24093 | break; | |
24094 | ||
24095 | case DW_OP_minus: | |
24096 | stack[stacki - 1] -= stack[stacki]; | |
24097 | stacki--; | |
24098 | break; | |
24099 | ||
24100 | case DW_OP_deref: | |
24101 | /* If we're not the last op, then we definitely can't encode | |
24102 | this using GDB's address_class enum. This is valid for partial | |
24103 | global symbols, although the variable's address will be bogus | |
24104 | in the psymtab. */ | |
24105 | if (i < size) | |
24106 | dwarf2_complex_location_expr_complaint (); | |
24107 | break; | |
24108 | ||
24109 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 24110 | case DW_OP_form_tls_address: |
21ae7a4d JK |
24111 | /* The top of the stack has the offset from the beginning |
24112 | of the thread control block at which the variable is located. */ | |
24113 | /* Nothing should follow this operator, so the top of stack would | |
24114 | be returned. */ | |
24115 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
24116 | address will be bogus in the psymtab. Make it always at least |
24117 | non-zero to not look as a variable garbage collected by linker | |
24118 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
24119 | if (i < size) |
24120 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 24121 | stack[stacki]++; |
21ae7a4d JK |
24122 | break; |
24123 | ||
24124 | case DW_OP_GNU_uninit: | |
24125 | break; | |
24126 | ||
3019eac3 | 24127 | case DW_OP_GNU_addr_index: |
49f6c839 | 24128 | case DW_OP_GNU_const_index: |
3019eac3 DE |
24129 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
24130 | &bytes_read); | |
24131 | i += bytes_read; | |
24132 | break; | |
24133 | ||
21ae7a4d JK |
24134 | default: |
24135 | { | |
f39c6ffd | 24136 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
24137 | |
24138 | if (name) | |
24139 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
24140 | name); | |
24141 | else | |
24142 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
24143 | op); | |
24144 | } | |
24145 | ||
24146 | return (stack[stacki]); | |
d53d4ac5 | 24147 | } |
3c6e0cb3 | 24148 | |
21ae7a4d JK |
24149 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
24150 | outside of the allocated space. Also enforce minimum>0. */ | |
24151 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
24152 | { | |
24153 | complaint (&symfile_complaints, | |
24154 | _("location description stack overflow")); | |
24155 | return 0; | |
24156 | } | |
24157 | ||
24158 | if (stacki <= 0) | |
24159 | { | |
24160 | complaint (&symfile_complaints, | |
24161 | _("location description stack underflow")); | |
24162 | return 0; | |
24163 | } | |
24164 | } | |
24165 | return (stack[stacki]); | |
c906108c SS |
24166 | } |
24167 | ||
24168 | /* memory allocation interface */ | |
24169 | ||
c906108c | 24170 | static struct dwarf_block * |
7b5a2f43 | 24171 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 24172 | { |
8d749320 | 24173 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
24174 | } |
24175 | ||
c906108c | 24176 | static struct die_info * |
b60c80d6 | 24177 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
24178 | { |
24179 | struct die_info *die; | |
b60c80d6 DJ |
24180 | size_t size = sizeof (struct die_info); |
24181 | ||
24182 | if (num_attrs > 1) | |
24183 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 24184 | |
b60c80d6 | 24185 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
24186 | memset (die, 0, sizeof (struct die_info)); |
24187 | return (die); | |
24188 | } | |
2e276125 JB |
24189 | |
24190 | \f | |
24191 | /* Macro support. */ | |
24192 | ||
233d95b5 JK |
24193 | /* Return file name relative to the compilation directory of file number I in |
24194 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 24195 | responsible for freeing it. */ |
233d95b5 | 24196 | |
2e276125 | 24197 | static char * |
233d95b5 | 24198 | file_file_name (int file, struct line_header *lh) |
2e276125 | 24199 | { |
6a83a1e6 EZ |
24200 | /* Is the file number a valid index into the line header's file name |
24201 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 24202 | if (1 <= file && file <= lh->file_names.size ()) |
6a83a1e6 | 24203 | { |
8c43009f | 24204 | const file_entry &fe = lh->file_names[file - 1]; |
6e70227d | 24205 | |
8c43009f PA |
24206 | if (!IS_ABSOLUTE_PATH (fe.name)) |
24207 | { | |
24208 | const char *dir = fe.include_dir (lh); | |
24209 | if (dir != NULL) | |
24210 | return concat (dir, SLASH_STRING, fe.name, (char *) NULL); | |
24211 | } | |
24212 | return xstrdup (fe.name); | |
6a83a1e6 | 24213 | } |
2e276125 JB |
24214 | else |
24215 | { | |
6a83a1e6 EZ |
24216 | /* The compiler produced a bogus file number. We can at least |
24217 | record the macro definitions made in the file, even if we | |
24218 | won't be able to find the file by name. */ | |
24219 | char fake_name[80]; | |
9a619af0 | 24220 | |
8c042590 PM |
24221 | xsnprintf (fake_name, sizeof (fake_name), |
24222 | "<bad macro file number %d>", file); | |
2e276125 | 24223 | |
6e70227d | 24224 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
24225 | _("bad file number in macro information (%d)"), |
24226 | file); | |
2e276125 | 24227 | |
6a83a1e6 | 24228 | return xstrdup (fake_name); |
2e276125 JB |
24229 | } |
24230 | } | |
24231 | ||
233d95b5 JK |
24232 | /* Return the full name of file number I in *LH's file name table. |
24233 | Use COMP_DIR as the name of the current directory of the | |
24234 | compilation. The result is allocated using xmalloc; the caller is | |
24235 | responsible for freeing it. */ | |
24236 | static char * | |
24237 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
24238 | { | |
24239 | /* Is the file number a valid index into the line header's file name | |
24240 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 24241 | if (1 <= file && file <= lh->file_names.size ()) |
233d95b5 JK |
24242 | { |
24243 | char *relative = file_file_name (file, lh); | |
24244 | ||
24245 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
24246 | return relative; | |
b36cec19 PA |
24247 | return reconcat (relative, comp_dir, SLASH_STRING, |
24248 | relative, (char *) NULL); | |
233d95b5 JK |
24249 | } |
24250 | else | |
24251 | return file_file_name (file, lh); | |
24252 | } | |
24253 | ||
2e276125 JB |
24254 | |
24255 | static struct macro_source_file * | |
24256 | macro_start_file (int file, int line, | |
24257 | struct macro_source_file *current_file, | |
43f3e411 | 24258 | struct line_header *lh) |
2e276125 | 24259 | { |
233d95b5 JK |
24260 | /* File name relative to the compilation directory of this source file. */ |
24261 | char *file_name = file_file_name (file, lh); | |
2e276125 | 24262 | |
2e276125 | 24263 | if (! current_file) |
abc9d0dc | 24264 | { |
fc474241 DE |
24265 | /* Note: We don't create a macro table for this compilation unit |
24266 | at all until we actually get a filename. */ | |
43f3e411 | 24267 | struct macro_table *macro_table = get_macro_table (); |
fc474241 | 24268 | |
abc9d0dc TT |
24269 | /* If we have no current file, then this must be the start_file |
24270 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
24271 | current_file = macro_set_main (macro_table, file_name); |
24272 | macro_define_special (macro_table); | |
abc9d0dc | 24273 | } |
2e276125 | 24274 | else |
233d95b5 | 24275 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 24276 | |
233d95b5 | 24277 | xfree (file_name); |
6e70227d | 24278 | |
2e276125 JB |
24279 | return current_file; |
24280 | } | |
24281 | ||
2e276125 JB |
24282 | static const char * |
24283 | consume_improper_spaces (const char *p, const char *body) | |
24284 | { | |
24285 | if (*p == ' ') | |
24286 | { | |
4d3c2250 | 24287 | complaint (&symfile_complaints, |
3e43a32a MS |
24288 | _("macro definition contains spaces " |
24289 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 24290 | body); |
2e276125 JB |
24291 | |
24292 | while (*p == ' ') | |
24293 | p++; | |
24294 | } | |
24295 | ||
24296 | return p; | |
24297 | } | |
24298 | ||
24299 | ||
24300 | static void | |
24301 | parse_macro_definition (struct macro_source_file *file, int line, | |
24302 | const char *body) | |
24303 | { | |
24304 | const char *p; | |
24305 | ||
24306 | /* The body string takes one of two forms. For object-like macro | |
24307 | definitions, it should be: | |
24308 | ||
24309 | <macro name> " " <definition> | |
24310 | ||
24311 | For function-like macro definitions, it should be: | |
24312 | ||
24313 | <macro name> "() " <definition> | |
24314 | or | |
24315 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
24316 | ||
24317 | Spaces may appear only where explicitly indicated, and in the | |
24318 | <definition>. | |
24319 | ||
24320 | The Dwarf 2 spec says that an object-like macro's name is always | |
24321 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 24322 | the space when the macro's definition is the empty string. |
2e276125 JB |
24323 | |
24324 | The Dwarf 2 spec says that there should be no spaces between the | |
24325 | formal arguments in a function-like macro's formal argument list, | |
24326 | but versions of GCC around March 2002 include spaces after the | |
24327 | commas. */ | |
24328 | ||
24329 | ||
24330 | /* Find the extent of the macro name. The macro name is terminated | |
24331 | by either a space or null character (for an object-like macro) or | |
24332 | an opening paren (for a function-like macro). */ | |
24333 | for (p = body; *p; p++) | |
24334 | if (*p == ' ' || *p == '(') | |
24335 | break; | |
24336 | ||
24337 | if (*p == ' ' || *p == '\0') | |
24338 | { | |
24339 | /* It's an object-like macro. */ | |
24340 | int name_len = p - body; | |
3f8a7804 | 24341 | char *name = savestring (body, name_len); |
2e276125 JB |
24342 | const char *replacement; |
24343 | ||
24344 | if (*p == ' ') | |
24345 | replacement = body + name_len + 1; | |
24346 | else | |
24347 | { | |
4d3c2250 | 24348 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24349 | replacement = body + name_len; |
24350 | } | |
6e70227d | 24351 | |
2e276125 JB |
24352 | macro_define_object (file, line, name, replacement); |
24353 | ||
24354 | xfree (name); | |
24355 | } | |
24356 | else if (*p == '(') | |
24357 | { | |
24358 | /* It's a function-like macro. */ | |
3f8a7804 | 24359 | char *name = savestring (body, p - body); |
2e276125 JB |
24360 | int argc = 0; |
24361 | int argv_size = 1; | |
8d749320 | 24362 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
24363 | |
24364 | p++; | |
24365 | ||
24366 | p = consume_improper_spaces (p, body); | |
24367 | ||
24368 | /* Parse the formal argument list. */ | |
24369 | while (*p && *p != ')') | |
24370 | { | |
24371 | /* Find the extent of the current argument name. */ | |
24372 | const char *arg_start = p; | |
24373 | ||
24374 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
24375 | p++; | |
24376 | ||
24377 | if (! *p || p == arg_start) | |
4d3c2250 | 24378 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24379 | else |
24380 | { | |
24381 | /* Make sure argv has room for the new argument. */ | |
24382 | if (argc >= argv_size) | |
24383 | { | |
24384 | argv_size *= 2; | |
224c3ddb | 24385 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
24386 | } |
24387 | ||
3f8a7804 | 24388 | argv[argc++] = savestring (arg_start, p - arg_start); |
2e276125 JB |
24389 | } |
24390 | ||
24391 | p = consume_improper_spaces (p, body); | |
24392 | ||
24393 | /* Consume the comma, if present. */ | |
24394 | if (*p == ',') | |
24395 | { | |
24396 | p++; | |
24397 | ||
24398 | p = consume_improper_spaces (p, body); | |
24399 | } | |
24400 | } | |
24401 | ||
24402 | if (*p == ')') | |
24403 | { | |
24404 | p++; | |
24405 | ||
24406 | if (*p == ' ') | |
24407 | /* Perfectly formed definition, no complaints. */ | |
24408 | macro_define_function (file, line, name, | |
6e70227d | 24409 | argc, (const char **) argv, |
2e276125 JB |
24410 | p + 1); |
24411 | else if (*p == '\0') | |
24412 | { | |
24413 | /* Complain, but do define it. */ | |
4d3c2250 | 24414 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 24415 | macro_define_function (file, line, name, |
6e70227d | 24416 | argc, (const char **) argv, |
2e276125 JB |
24417 | p); |
24418 | } | |
24419 | else | |
24420 | /* Just complain. */ | |
4d3c2250 | 24421 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24422 | } |
24423 | else | |
24424 | /* Just complain. */ | |
4d3c2250 | 24425 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24426 | |
24427 | xfree (name); | |
24428 | { | |
24429 | int i; | |
24430 | ||
24431 | for (i = 0; i < argc; i++) | |
24432 | xfree (argv[i]); | |
24433 | } | |
24434 | xfree (argv); | |
24435 | } | |
24436 | else | |
4d3c2250 | 24437 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24438 | } |
24439 | ||
cf2c3c16 TT |
24440 | /* Skip some bytes from BYTES according to the form given in FORM. |
24441 | Returns the new pointer. */ | |
2e276125 | 24442 | |
d521ce57 TT |
24443 | static const gdb_byte * |
24444 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
24445 | enum dwarf_form form, |
24446 | unsigned int offset_size, | |
24447 | struct dwarf2_section_info *section) | |
2e276125 | 24448 | { |
cf2c3c16 | 24449 | unsigned int bytes_read; |
2e276125 | 24450 | |
cf2c3c16 | 24451 | switch (form) |
2e276125 | 24452 | { |
cf2c3c16 TT |
24453 | case DW_FORM_data1: |
24454 | case DW_FORM_flag: | |
24455 | ++bytes; | |
24456 | break; | |
24457 | ||
24458 | case DW_FORM_data2: | |
24459 | bytes += 2; | |
24460 | break; | |
24461 | ||
24462 | case DW_FORM_data4: | |
24463 | bytes += 4; | |
24464 | break; | |
24465 | ||
24466 | case DW_FORM_data8: | |
24467 | bytes += 8; | |
24468 | break; | |
24469 | ||
0224619f JK |
24470 | case DW_FORM_data16: |
24471 | bytes += 16; | |
24472 | break; | |
24473 | ||
cf2c3c16 TT |
24474 | case DW_FORM_string: |
24475 | read_direct_string (abfd, bytes, &bytes_read); | |
24476 | bytes += bytes_read; | |
24477 | break; | |
24478 | ||
24479 | case DW_FORM_sec_offset: | |
24480 | case DW_FORM_strp: | |
36586728 | 24481 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
24482 | bytes += offset_size; |
24483 | break; | |
24484 | ||
24485 | case DW_FORM_block: | |
24486 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
24487 | bytes += bytes_read; | |
24488 | break; | |
24489 | ||
24490 | case DW_FORM_block1: | |
24491 | bytes += 1 + read_1_byte (abfd, bytes); | |
24492 | break; | |
24493 | case DW_FORM_block2: | |
24494 | bytes += 2 + read_2_bytes (abfd, bytes); | |
24495 | break; | |
24496 | case DW_FORM_block4: | |
24497 | bytes += 4 + read_4_bytes (abfd, bytes); | |
24498 | break; | |
24499 | ||
24500 | case DW_FORM_sdata: | |
24501 | case DW_FORM_udata: | |
3019eac3 DE |
24502 | case DW_FORM_GNU_addr_index: |
24503 | case DW_FORM_GNU_str_index: | |
d521ce57 | 24504 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
24505 | if (bytes == NULL) |
24506 | { | |
24507 | dwarf2_section_buffer_overflow_complaint (section); | |
24508 | return NULL; | |
24509 | } | |
cf2c3c16 TT |
24510 | break; |
24511 | ||
663c44ac JK |
24512 | case DW_FORM_implicit_const: |
24513 | break; | |
24514 | ||
cf2c3c16 TT |
24515 | default: |
24516 | { | |
cf2c3c16 TT |
24517 | complaint (&symfile_complaints, |
24518 | _("invalid form 0x%x in `%s'"), | |
a32a8923 | 24519 | form, get_section_name (section)); |
cf2c3c16 TT |
24520 | return NULL; |
24521 | } | |
2e276125 JB |
24522 | } |
24523 | ||
cf2c3c16 TT |
24524 | return bytes; |
24525 | } | |
757a13d0 | 24526 | |
cf2c3c16 TT |
24527 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
24528 | opcode. Returns an updated pointer to the macro data buffer; or, | |
24529 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 24530 | |
d521ce57 | 24531 | static const gdb_byte * |
cf2c3c16 | 24532 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
24533 | const gdb_byte **opcode_definitions, |
24534 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
24535 | bfd *abfd, |
24536 | unsigned int offset_size, | |
24537 | struct dwarf2_section_info *section) | |
24538 | { | |
24539 | unsigned int bytes_read, i; | |
24540 | unsigned long arg; | |
d521ce57 | 24541 | const gdb_byte *defn; |
2e276125 | 24542 | |
cf2c3c16 | 24543 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 24544 | { |
cf2c3c16 TT |
24545 | complaint (&symfile_complaints, |
24546 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
24547 | opcode); | |
24548 | return NULL; | |
24549 | } | |
2e276125 | 24550 | |
cf2c3c16 TT |
24551 | defn = opcode_definitions[opcode]; |
24552 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
24553 | defn += bytes_read; | |
2e276125 | 24554 | |
cf2c3c16 TT |
24555 | for (i = 0; i < arg; ++i) |
24556 | { | |
aead7601 SM |
24557 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
24558 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 24559 | section); |
cf2c3c16 TT |
24560 | if (mac_ptr == NULL) |
24561 | { | |
24562 | /* skip_form_bytes already issued the complaint. */ | |
24563 | return NULL; | |
24564 | } | |
24565 | } | |
757a13d0 | 24566 | |
cf2c3c16 TT |
24567 | return mac_ptr; |
24568 | } | |
757a13d0 | 24569 | |
cf2c3c16 TT |
24570 | /* A helper function which parses the header of a macro section. |
24571 | If the macro section is the extended (for now called "GNU") type, | |
24572 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
24573 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 24574 | |
d521ce57 TT |
24575 | static const gdb_byte * |
24576 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 24577 | bfd *abfd, |
d521ce57 | 24578 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
24579 | unsigned int *offset_size, |
24580 | int section_is_gnu) | |
24581 | { | |
24582 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 24583 | |
cf2c3c16 TT |
24584 | if (section_is_gnu) |
24585 | { | |
24586 | unsigned int version, flags; | |
757a13d0 | 24587 | |
cf2c3c16 | 24588 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 24589 | if (version != 4 && version != 5) |
cf2c3c16 TT |
24590 | { |
24591 | complaint (&symfile_complaints, | |
24592 | _("unrecognized version `%d' in .debug_macro section"), | |
24593 | version); | |
24594 | return NULL; | |
24595 | } | |
24596 | mac_ptr += 2; | |
757a13d0 | 24597 | |
cf2c3c16 TT |
24598 | flags = read_1_byte (abfd, mac_ptr); |
24599 | ++mac_ptr; | |
24600 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 24601 | |
cf2c3c16 TT |
24602 | if ((flags & 2) != 0) |
24603 | /* We don't need the line table offset. */ | |
24604 | mac_ptr += *offset_size; | |
757a13d0 | 24605 | |
cf2c3c16 TT |
24606 | /* Vendor opcode descriptions. */ |
24607 | if ((flags & 4) != 0) | |
24608 | { | |
24609 | unsigned int i, count; | |
757a13d0 | 24610 | |
cf2c3c16 TT |
24611 | count = read_1_byte (abfd, mac_ptr); |
24612 | ++mac_ptr; | |
24613 | for (i = 0; i < count; ++i) | |
24614 | { | |
24615 | unsigned int opcode, bytes_read; | |
24616 | unsigned long arg; | |
24617 | ||
24618 | opcode = read_1_byte (abfd, mac_ptr); | |
24619 | ++mac_ptr; | |
24620 | opcode_definitions[opcode] = mac_ptr; | |
24621 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24622 | mac_ptr += bytes_read; | |
24623 | mac_ptr += arg; | |
24624 | } | |
757a13d0 | 24625 | } |
cf2c3c16 | 24626 | } |
757a13d0 | 24627 | |
cf2c3c16 TT |
24628 | return mac_ptr; |
24629 | } | |
757a13d0 | 24630 | |
cf2c3c16 | 24631 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 24632 | including DW_MACRO_import. */ |
cf2c3c16 TT |
24633 | |
24634 | static void | |
ed2dc618 SM |
24635 | dwarf_decode_macro_bytes (struct dwarf2_per_objfile *dwarf2_per_objfile, |
24636 | bfd *abfd, | |
d521ce57 | 24637 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, |
cf2c3c16 | 24638 | struct macro_source_file *current_file, |
43f3e411 | 24639 | struct line_header *lh, |
cf2c3c16 | 24640 | struct dwarf2_section_info *section, |
36586728 | 24641 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 24642 | unsigned int offset_size, |
8fc3fc34 | 24643 | htab_t include_hash) |
cf2c3c16 | 24644 | { |
4d663531 | 24645 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
24646 | enum dwarf_macro_record_type macinfo_type; |
24647 | int at_commandline; | |
d521ce57 | 24648 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 24649 | |
cf2c3c16 TT |
24650 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
24651 | &offset_size, section_is_gnu); | |
24652 | if (mac_ptr == NULL) | |
24653 | { | |
24654 | /* We already issued a complaint. */ | |
24655 | return; | |
24656 | } | |
757a13d0 JK |
24657 | |
24658 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
24659 | GDB is still reading the definitions from command line. First | |
24660 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
24661 | to create CURRENT_FILE for the main source holding also the command line | |
24662 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
24663 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
24664 | ||
24665 | at_commandline = 1; | |
24666 | ||
24667 | do | |
24668 | { | |
24669 | /* Do we at least have room for a macinfo type byte? */ | |
24670 | if (mac_ptr >= mac_end) | |
24671 | { | |
f664829e | 24672 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
24673 | break; |
24674 | } | |
24675 | ||
aead7601 | 24676 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
24677 | mac_ptr++; |
24678 | ||
cf2c3c16 TT |
24679 | /* Note that we rely on the fact that the corresponding GNU and |
24680 | DWARF constants are the same. */ | |
132448f8 SM |
24681 | DIAGNOSTIC_PUSH |
24682 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
757a13d0 JK |
24683 | switch (macinfo_type) |
24684 | { | |
24685 | /* A zero macinfo type indicates the end of the macro | |
24686 | information. */ | |
24687 | case 0: | |
24688 | break; | |
2e276125 | 24689 | |
0af92d60 JK |
24690 | case DW_MACRO_define: |
24691 | case DW_MACRO_undef: | |
24692 | case DW_MACRO_define_strp: | |
24693 | case DW_MACRO_undef_strp: | |
24694 | case DW_MACRO_define_sup: | |
24695 | case DW_MACRO_undef_sup: | |
2e276125 | 24696 | { |
891d2f0b | 24697 | unsigned int bytes_read; |
2e276125 | 24698 | int line; |
d521ce57 | 24699 | const char *body; |
cf2c3c16 | 24700 | int is_define; |
2e276125 | 24701 | |
cf2c3c16 TT |
24702 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
24703 | mac_ptr += bytes_read; | |
24704 | ||
0af92d60 JK |
24705 | if (macinfo_type == DW_MACRO_define |
24706 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
24707 | { |
24708 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
24709 | mac_ptr += bytes_read; | |
24710 | } | |
24711 | else | |
24712 | { | |
24713 | LONGEST str_offset; | |
24714 | ||
24715 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24716 | mac_ptr += offset_size; | |
2e276125 | 24717 | |
0af92d60 JK |
24718 | if (macinfo_type == DW_MACRO_define_sup |
24719 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 24720 | || section_is_dwz) |
36586728 | 24721 | { |
ed2dc618 SM |
24722 | struct dwz_file *dwz |
24723 | = dwarf2_get_dwz_file (dwarf2_per_objfile); | |
36586728 | 24724 | |
ed2dc618 SM |
24725 | body = read_indirect_string_from_dwz (objfile, |
24726 | dwz, str_offset); | |
36586728 TT |
24727 | } |
24728 | else | |
ed2dc618 SM |
24729 | body = read_indirect_string_at_offset (dwarf2_per_objfile, |
24730 | abfd, str_offset); | |
cf2c3c16 TT |
24731 | } |
24732 | ||
0af92d60 JK |
24733 | is_define = (macinfo_type == DW_MACRO_define |
24734 | || macinfo_type == DW_MACRO_define_strp | |
24735 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 24736 | if (! current_file) |
757a13d0 JK |
24737 | { |
24738 | /* DWARF violation as no main source is present. */ | |
24739 | complaint (&symfile_complaints, | |
24740 | _("debug info with no main source gives macro %s " | |
24741 | "on line %d: %s"), | |
cf2c3c16 TT |
24742 | is_define ? _("definition") : _("undefinition"), |
24743 | line, body); | |
757a13d0 JK |
24744 | break; |
24745 | } | |
3e43a32a MS |
24746 | if ((line == 0 && !at_commandline) |
24747 | || (line != 0 && at_commandline)) | |
4d3c2250 | 24748 | complaint (&symfile_complaints, |
757a13d0 JK |
24749 | _("debug info gives %s macro %s with %s line %d: %s"), |
24750 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 24751 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
24752 | line == 0 ? _("zero") : _("non-zero"), line, body); |
24753 | ||
cf2c3c16 | 24754 | if (is_define) |
757a13d0 | 24755 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
24756 | else |
24757 | { | |
0af92d60 JK |
24758 | gdb_assert (macinfo_type == DW_MACRO_undef |
24759 | || macinfo_type == DW_MACRO_undef_strp | |
24760 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
24761 | macro_undef (current_file, line, body); |
24762 | } | |
2e276125 JB |
24763 | } |
24764 | break; | |
24765 | ||
0af92d60 | 24766 | case DW_MACRO_start_file: |
2e276125 | 24767 | { |
891d2f0b | 24768 | unsigned int bytes_read; |
2e276125 JB |
24769 | int line, file; |
24770 | ||
24771 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24772 | mac_ptr += bytes_read; | |
24773 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24774 | mac_ptr += bytes_read; | |
24775 | ||
3e43a32a MS |
24776 | if ((line == 0 && !at_commandline) |
24777 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
24778 | complaint (&symfile_complaints, |
24779 | _("debug info gives source %d included " | |
24780 | "from %s at %s line %d"), | |
24781 | file, at_commandline ? _("command-line") : _("file"), | |
24782 | line == 0 ? _("zero") : _("non-zero"), line); | |
24783 | ||
24784 | if (at_commandline) | |
24785 | { | |
0af92d60 | 24786 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 24787 | pass one. */ |
757a13d0 JK |
24788 | at_commandline = 0; |
24789 | } | |
24790 | else | |
43f3e411 | 24791 | current_file = macro_start_file (file, line, current_file, lh); |
2e276125 JB |
24792 | } |
24793 | break; | |
24794 | ||
0af92d60 | 24795 | case DW_MACRO_end_file: |
2e276125 | 24796 | if (! current_file) |
4d3c2250 | 24797 | complaint (&symfile_complaints, |
3e43a32a MS |
24798 | _("macro debug info has an unmatched " |
24799 | "`close_file' directive")); | |
2e276125 JB |
24800 | else |
24801 | { | |
24802 | current_file = current_file->included_by; | |
24803 | if (! current_file) | |
24804 | { | |
cf2c3c16 | 24805 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
24806 | |
24807 | /* GCC circa March 2002 doesn't produce the zero | |
24808 | type byte marking the end of the compilation | |
24809 | unit. Complain if it's not there, but exit no | |
24810 | matter what. */ | |
24811 | ||
24812 | /* Do we at least have room for a macinfo type byte? */ | |
24813 | if (mac_ptr >= mac_end) | |
24814 | { | |
f664829e | 24815 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
24816 | return; |
24817 | } | |
24818 | ||
24819 | /* We don't increment mac_ptr here, so this is just | |
24820 | a look-ahead. */ | |
aead7601 SM |
24821 | next_type |
24822 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
24823 | mac_ptr); | |
2e276125 | 24824 | if (next_type != 0) |
4d3c2250 | 24825 | complaint (&symfile_complaints, |
3e43a32a MS |
24826 | _("no terminating 0-type entry for " |
24827 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
24828 | |
24829 | return; | |
24830 | } | |
24831 | } | |
24832 | break; | |
24833 | ||
0af92d60 JK |
24834 | case DW_MACRO_import: |
24835 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
24836 | { |
24837 | LONGEST offset; | |
8fc3fc34 | 24838 | void **slot; |
a036ba48 TT |
24839 | bfd *include_bfd = abfd; |
24840 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 24841 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 24842 | int is_dwz = section_is_dwz; |
d521ce57 | 24843 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
24844 | |
24845 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24846 | mac_ptr += offset_size; | |
24847 | ||
0af92d60 | 24848 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 | 24849 | { |
ed2dc618 | 24850 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
a036ba48 | 24851 | |
4d663531 | 24852 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 24853 | |
a036ba48 | 24854 | include_section = &dwz->macro; |
a32a8923 | 24855 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
24856 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
24857 | is_dwz = 1; | |
24858 | } | |
24859 | ||
24860 | new_mac_ptr = include_section->buffer + offset; | |
24861 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
24862 | ||
8fc3fc34 TT |
24863 | if (*slot != NULL) |
24864 | { | |
24865 | /* This has actually happened; see | |
24866 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
24867 | complaint (&symfile_complaints, | |
0af92d60 | 24868 | _("recursive DW_MACRO_import in " |
8fc3fc34 TT |
24869 | ".debug_macro section")); |
24870 | } | |
24871 | else | |
24872 | { | |
d521ce57 | 24873 | *slot = (void *) new_mac_ptr; |
36586728 | 24874 | |
ed2dc618 SM |
24875 | dwarf_decode_macro_bytes (dwarf2_per_objfile, |
24876 | include_bfd, new_mac_ptr, | |
43f3e411 | 24877 | include_mac_end, current_file, lh, |
36586728 | 24878 | section, section_is_gnu, is_dwz, |
4d663531 | 24879 | offset_size, include_hash); |
8fc3fc34 | 24880 | |
d521ce57 | 24881 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 24882 | } |
cf2c3c16 TT |
24883 | } |
24884 | break; | |
24885 | ||
2e276125 | 24886 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
24887 | if (!section_is_gnu) |
24888 | { | |
24889 | unsigned int bytes_read; | |
2e276125 | 24890 | |
ac298888 TT |
24891 | /* This reads the constant, but since we don't recognize |
24892 | any vendor extensions, we ignore it. */ | |
24893 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
24894 | mac_ptr += bytes_read; |
24895 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24896 | mac_ptr += bytes_read; | |
2e276125 | 24897 | |
cf2c3c16 TT |
24898 | /* We don't recognize any vendor extensions. */ |
24899 | break; | |
24900 | } | |
24901 | /* FALLTHROUGH */ | |
24902 | ||
24903 | default: | |
24904 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24905 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24906 | section); |
24907 | if (mac_ptr == NULL) | |
24908 | return; | |
24909 | break; | |
2e276125 | 24910 | } |
132448f8 | 24911 | DIAGNOSTIC_POP |
757a13d0 | 24912 | } while (macinfo_type != 0); |
2e276125 | 24913 | } |
8e19ed76 | 24914 | |
cf2c3c16 | 24915 | static void |
09262596 | 24916 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 24917 | int section_is_gnu) |
cf2c3c16 | 24918 | { |
518817b3 SM |
24919 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24920 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24921 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
24922 | struct line_header *lh = cu->line_header; |
24923 | bfd *abfd; | |
d521ce57 | 24924 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
24925 | struct macro_source_file *current_file = 0; |
24926 | enum dwarf_macro_record_type macinfo_type; | |
24927 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 24928 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 24929 | void **slot; |
09262596 DE |
24930 | struct dwarf2_section_info *section; |
24931 | const char *section_name; | |
24932 | ||
24933 | if (cu->dwo_unit != NULL) | |
24934 | { | |
24935 | if (section_is_gnu) | |
24936 | { | |
24937 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24938 | section_name = ".debug_macro.dwo"; | |
24939 | } | |
24940 | else | |
24941 | { | |
24942 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24943 | section_name = ".debug_macinfo.dwo"; | |
24944 | } | |
24945 | } | |
24946 | else | |
24947 | { | |
24948 | if (section_is_gnu) | |
24949 | { | |
24950 | section = &dwarf2_per_objfile->macro; | |
24951 | section_name = ".debug_macro"; | |
24952 | } | |
24953 | else | |
24954 | { | |
24955 | section = &dwarf2_per_objfile->macinfo; | |
24956 | section_name = ".debug_macinfo"; | |
24957 | } | |
24958 | } | |
cf2c3c16 | 24959 | |
bb5ed363 | 24960 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
24961 | if (section->buffer == NULL) |
24962 | { | |
fceca515 | 24963 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
24964 | return; |
24965 | } | |
a32a8923 | 24966 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
24967 | |
24968 | /* First pass: Find the name of the base filename. | |
24969 | This filename is needed in order to process all macros whose definition | |
24970 | (or undefinition) comes from the command line. These macros are defined | |
24971 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
24972 | associated to the base file. | |
24973 | ||
24974 | To determine the base file name, we scan the macro definitions until we | |
24975 | reach the first DW_MACINFO_start_file entry. We then initialize | |
24976 | CURRENT_FILE accordingly so that any macro definition found before the | |
24977 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
24978 | ||
24979 | mac_ptr = section->buffer + offset; | |
24980 | mac_end = section->buffer + section->size; | |
24981 | ||
24982 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
24983 | &offset_size, section_is_gnu); | |
24984 | if (mac_ptr == NULL) | |
24985 | { | |
24986 | /* We already issued a complaint. */ | |
24987 | return; | |
24988 | } | |
24989 | ||
24990 | do | |
24991 | { | |
24992 | /* Do we at least have room for a macinfo type byte? */ | |
24993 | if (mac_ptr >= mac_end) | |
24994 | { | |
24995 | /* Complaint is printed during the second pass as GDB will probably | |
24996 | stop the first pass earlier upon finding | |
24997 | DW_MACINFO_start_file. */ | |
24998 | break; | |
24999 | } | |
25000 | ||
aead7601 | 25001 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
25002 | mac_ptr++; |
25003 | ||
25004 | /* Note that we rely on the fact that the corresponding GNU and | |
25005 | DWARF constants are the same. */ | |
132448f8 SM |
25006 | DIAGNOSTIC_PUSH |
25007 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
cf2c3c16 TT |
25008 | switch (macinfo_type) |
25009 | { | |
25010 | /* A zero macinfo type indicates the end of the macro | |
25011 | information. */ | |
25012 | case 0: | |
25013 | break; | |
25014 | ||
0af92d60 JK |
25015 | case DW_MACRO_define: |
25016 | case DW_MACRO_undef: | |
cf2c3c16 TT |
25017 | /* Only skip the data by MAC_PTR. */ |
25018 | { | |
25019 | unsigned int bytes_read; | |
25020 | ||
25021 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25022 | mac_ptr += bytes_read; | |
25023 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
25024 | mac_ptr += bytes_read; | |
25025 | } | |
25026 | break; | |
25027 | ||
0af92d60 | 25028 | case DW_MACRO_start_file: |
cf2c3c16 TT |
25029 | { |
25030 | unsigned int bytes_read; | |
25031 | int line, file; | |
25032 | ||
25033 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25034 | mac_ptr += bytes_read; | |
25035 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25036 | mac_ptr += bytes_read; | |
25037 | ||
43f3e411 | 25038 | current_file = macro_start_file (file, line, current_file, lh); |
cf2c3c16 TT |
25039 | } |
25040 | break; | |
25041 | ||
0af92d60 | 25042 | case DW_MACRO_end_file: |
cf2c3c16 TT |
25043 | /* No data to skip by MAC_PTR. */ |
25044 | break; | |
25045 | ||
0af92d60 JK |
25046 | case DW_MACRO_define_strp: |
25047 | case DW_MACRO_undef_strp: | |
25048 | case DW_MACRO_define_sup: | |
25049 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
25050 | { |
25051 | unsigned int bytes_read; | |
25052 | ||
25053 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25054 | mac_ptr += bytes_read; | |
25055 | mac_ptr += offset_size; | |
25056 | } | |
25057 | break; | |
25058 | ||
0af92d60 JK |
25059 | case DW_MACRO_import: |
25060 | case DW_MACRO_import_sup: | |
cf2c3c16 | 25061 | /* Note that, according to the spec, a transparent include |
0af92d60 | 25062 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
25063 | skip this opcode. */ |
25064 | mac_ptr += offset_size; | |
25065 | break; | |
25066 | ||
25067 | case DW_MACINFO_vendor_ext: | |
25068 | /* Only skip the data by MAC_PTR. */ | |
25069 | if (!section_is_gnu) | |
25070 | { | |
25071 | unsigned int bytes_read; | |
25072 | ||
25073 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
25074 | mac_ptr += bytes_read; | |
25075 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
25076 | mac_ptr += bytes_read; | |
25077 | } | |
25078 | /* FALLTHROUGH */ | |
25079 | ||
25080 | default: | |
25081 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 25082 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
25083 | section); |
25084 | if (mac_ptr == NULL) | |
25085 | return; | |
25086 | break; | |
25087 | } | |
132448f8 | 25088 | DIAGNOSTIC_POP |
cf2c3c16 TT |
25089 | } while (macinfo_type != 0 && current_file == NULL); |
25090 | ||
25091 | /* Second pass: Process all entries. | |
25092 | ||
25093 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
25094 | command-line macro definitions/undefinitions. This flag is unset when we | |
25095 | reach the first DW_MACINFO_start_file entry. */ | |
25096 | ||
fc4007c9 TT |
25097 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
25098 | htab_eq_pointer, | |
25099 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 25100 | mac_ptr = section->buffer + offset; |
fc4007c9 | 25101 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 25102 | *slot = (void *) mac_ptr; |
ed2dc618 SM |
25103 | dwarf_decode_macro_bytes (dwarf2_per_objfile, |
25104 | abfd, mac_ptr, mac_end, | |
43f3e411 | 25105 | current_file, lh, section, |
fc4007c9 TT |
25106 | section_is_gnu, 0, offset_size, |
25107 | include_hash.get ()); | |
cf2c3c16 TT |
25108 | } |
25109 | ||
8e19ed76 | 25110 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 25111 | if so return true else false. */ |
380bca97 | 25112 | |
8e19ed76 | 25113 | static int |
6e5a29e1 | 25114 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
25115 | { |
25116 | return (attr == NULL ? 0 : | |
25117 | attr->form == DW_FORM_block1 | |
25118 | || attr->form == DW_FORM_block2 | |
25119 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
25120 | || attr->form == DW_FORM_block |
25121 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 25122 | } |
4c2df51b | 25123 | |
c6a0999f JB |
25124 | /* Return non-zero if ATTR's value is a section offset --- classes |
25125 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
25126 | You may use DW_UNSND (attr) to retrieve such offsets. | |
25127 | ||
25128 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
25129 | may have a value that belongs to more than one of these classes; it | |
25130 | would be ambiguous if we did, because we use the same forms for all | |
25131 | of them. */ | |
380bca97 | 25132 | |
3690dd37 | 25133 | static int |
6e5a29e1 | 25134 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
25135 | { |
25136 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
25137 | || attr->form == DW_FORM_data8 |
25138 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
25139 | } |
25140 | ||
3690dd37 JB |
25141 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
25142 | zero otherwise. When this function returns true, you can apply | |
25143 | dwarf2_get_attr_constant_value to it. | |
25144 | ||
25145 | However, note that for some attributes you must check | |
25146 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
25147 | and DW_FORM_data8 are members of both the constant class, and of | |
25148 | the classes that contain offsets into other debug sections | |
25149 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
25150 | that, if an attribute's can be either a constant or one of the | |
25151 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
0224619f JK |
25152 | taken as section offsets, not constants. |
25153 | ||
25154 | DW_FORM_data16 is not considered as dwarf2_get_attr_constant_value | |
25155 | cannot handle that. */ | |
380bca97 | 25156 | |
3690dd37 | 25157 | static int |
6e5a29e1 | 25158 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
25159 | { |
25160 | switch (attr->form) | |
25161 | { | |
25162 | case DW_FORM_sdata: | |
25163 | case DW_FORM_udata: | |
25164 | case DW_FORM_data1: | |
25165 | case DW_FORM_data2: | |
25166 | case DW_FORM_data4: | |
25167 | case DW_FORM_data8: | |
663c44ac | 25168 | case DW_FORM_implicit_const: |
3690dd37 JB |
25169 | return 1; |
25170 | default: | |
25171 | return 0; | |
25172 | } | |
25173 | } | |
25174 | ||
7771576e SA |
25175 | |
25176 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
25177 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
25178 | ||
25179 | static int | |
6e5a29e1 | 25180 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
25181 | { |
25182 | switch (attr->form) | |
25183 | { | |
25184 | case DW_FORM_ref_addr: | |
25185 | case DW_FORM_ref1: | |
25186 | case DW_FORM_ref2: | |
25187 | case DW_FORM_ref4: | |
25188 | case DW_FORM_ref8: | |
25189 | case DW_FORM_ref_udata: | |
25190 | case DW_FORM_GNU_ref_alt: | |
25191 | return 1; | |
25192 | default: | |
25193 | return 0; | |
25194 | } | |
25195 | } | |
25196 | ||
3019eac3 DE |
25197 | /* Return the .debug_loc section to use for CU. |
25198 | For DWO files use .debug_loc.dwo. */ | |
25199 | ||
25200 | static struct dwarf2_section_info * | |
25201 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
25202 | { | |
518817b3 SM |
25203 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25204 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 25205 | |
3019eac3 | 25206 | if (cu->dwo_unit) |
43988095 JK |
25207 | { |
25208 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
25209 | ||
25210 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; | |
25211 | } | |
25212 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
25213 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
25214 | } |
25215 | ||
8cf6f0b1 TT |
25216 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
25217 | ||
25218 | static void | |
25219 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
25220 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 25221 | const struct attribute *attr) |
8cf6f0b1 | 25222 | { |
518817b3 SM |
25223 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25224 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
25225 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
25226 | ||
25227 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
25228 | |
25229 | baton->per_cu = cu->per_cu; | |
25230 | gdb_assert (baton->per_cu); | |
25231 | /* We don't know how long the location list is, but make sure we | |
25232 | don't run off the edge of the section. */ | |
3019eac3 DE |
25233 | baton->size = section->size - DW_UNSND (attr); |
25234 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 25235 | baton->base_address = cu->base_address; |
f664829e | 25236 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
25237 | } |
25238 | ||
4c2df51b | 25239 | static void |
ff39bb5e | 25240 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 25241 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 25242 | { |
518817b3 SM |
25243 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25244 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 25245 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 25246 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 25247 | |
3690dd37 | 25248 | if (attr_form_is_section_offset (attr) |
3019eac3 | 25249 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
25250 | the section. If so, fall through to the complaint in the |
25251 | other branch. */ | |
3019eac3 | 25252 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 25253 | { |
0d53c4c4 | 25254 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 25255 | |
8d749320 | 25256 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 25257 | |
8cf6f0b1 | 25258 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 25259 | |
d00adf39 | 25260 | if (cu->base_known == 0) |
0d53c4c4 | 25261 | complaint (&symfile_complaints, |
3e43a32a MS |
25262 | _("Location list used without " |
25263 | "specifying the CU base address.")); | |
4c2df51b | 25264 | |
f1e6e072 TT |
25265 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
25266 | ? dwarf2_loclist_block_index | |
25267 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
25268 | SYMBOL_LOCATION_BATON (sym) = baton; |
25269 | } | |
25270 | else | |
25271 | { | |
25272 | struct dwarf2_locexpr_baton *baton; | |
25273 | ||
8d749320 | 25274 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
25275 | baton->per_cu = cu->per_cu; |
25276 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
25277 | |
25278 | if (attr_form_is_block (attr)) | |
25279 | { | |
25280 | /* Note that we're just copying the block's data pointer | |
25281 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
25282 | info_buffer for SYM's objfile; right now we never release |
25283 | that buffer, but when we do clean up properly this may | |
25284 | need to change. */ | |
0d53c4c4 DJ |
25285 | baton->size = DW_BLOCK (attr)->size; |
25286 | baton->data = DW_BLOCK (attr)->data; | |
25287 | } | |
25288 | else | |
25289 | { | |
25290 | dwarf2_invalid_attrib_class_complaint ("location description", | |
25291 | SYMBOL_NATURAL_NAME (sym)); | |
25292 | baton->size = 0; | |
0d53c4c4 | 25293 | } |
6e70227d | 25294 | |
f1e6e072 TT |
25295 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
25296 | ? dwarf2_locexpr_block_index | |
25297 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
25298 | SYMBOL_LOCATION_BATON (sym) = baton; |
25299 | } | |
4c2df51b | 25300 | } |
6502dd73 | 25301 | |
9aa1f1e3 TT |
25302 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
25303 | came from a separate debuginfo file, then the master objfile is | |
25304 | returned. */ | |
ae0d2f24 UW |
25305 | |
25306 | struct objfile * | |
25307 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
25308 | { | |
e3b94546 | 25309 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
25310 | |
25311 | /* Return the master objfile, so that we can report and look up the | |
25312 | correct file containing this variable. */ | |
25313 | if (objfile->separate_debug_objfile_backlink) | |
25314 | objfile = objfile->separate_debug_objfile_backlink; | |
25315 | ||
25316 | return objfile; | |
25317 | } | |
25318 | ||
96408a79 SA |
25319 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
25320 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
25321 | CU_HEADERP first. */ | |
25322 | ||
25323 | static const struct comp_unit_head * | |
25324 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
25325 | struct dwarf2_per_cu_data *per_cu) | |
25326 | { | |
d521ce57 | 25327 | const gdb_byte *info_ptr; |
96408a79 SA |
25328 | |
25329 | if (per_cu->cu) | |
25330 | return &per_cu->cu->header; | |
25331 | ||
9c541725 | 25332 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
25333 | |
25334 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
25335 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
25336 | rcuh_kind::COMPILE); | |
96408a79 SA |
25337 | |
25338 | return cu_headerp; | |
25339 | } | |
25340 | ||
ae0d2f24 UW |
25341 | /* Return the address size given in the compilation unit header for CU. */ |
25342 | ||
98714339 | 25343 | int |
ae0d2f24 UW |
25344 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
25345 | { | |
96408a79 SA |
25346 | struct comp_unit_head cu_header_local; |
25347 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 25348 | |
96408a79 SA |
25349 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25350 | ||
25351 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
25352 | } |
25353 | ||
9eae7c52 TT |
25354 | /* Return the offset size given in the compilation unit header for CU. */ |
25355 | ||
25356 | int | |
25357 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
25358 | { | |
96408a79 SA |
25359 | struct comp_unit_head cu_header_local; |
25360 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 25361 | |
96408a79 SA |
25362 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25363 | ||
25364 | return cu_headerp->offset_size; | |
25365 | } | |
25366 | ||
25367 | /* See its dwarf2loc.h declaration. */ | |
25368 | ||
25369 | int | |
25370 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
25371 | { | |
25372 | struct comp_unit_head cu_header_local; | |
25373 | const struct comp_unit_head *cu_headerp; | |
25374 | ||
25375 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
25376 | ||
25377 | if (cu_headerp->version == 2) | |
25378 | return cu_headerp->addr_size; | |
25379 | else | |
25380 | return cu_headerp->offset_size; | |
181cebd4 JK |
25381 | } |
25382 | ||
9aa1f1e3 TT |
25383 | /* Return the text offset of the CU. The returned offset comes from |
25384 | this CU's objfile. If this objfile came from a separate debuginfo | |
25385 | file, then the offset may be different from the corresponding | |
25386 | offset in the parent objfile. */ | |
25387 | ||
25388 | CORE_ADDR | |
25389 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
25390 | { | |
e3b94546 | 25391 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
9aa1f1e3 TT |
25392 | |
25393 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
25394 | } | |
25395 | ||
43988095 JK |
25396 | /* Return DWARF version number of PER_CU. */ |
25397 | ||
25398 | short | |
25399 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
25400 | { | |
25401 | return per_cu->dwarf_version; | |
25402 | } | |
25403 | ||
348e048f DE |
25404 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
25405 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
25406 | |
25407 | static struct dwarf2_per_cu_data * | |
9c541725 | 25408 | dwarf2_find_containing_comp_unit (sect_offset sect_off, |
36586728 | 25409 | unsigned int offset_in_dwz, |
ed2dc618 | 25410 | struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25411 | { |
25412 | struct dwarf2_per_cu_data *this_cu; | |
25413 | int low, high; | |
36586728 | 25414 | const sect_offset *cu_off; |
ae038cb0 | 25415 | |
ae038cb0 DJ |
25416 | low = 0; |
25417 | high = dwarf2_per_objfile->n_comp_units - 1; | |
25418 | while (high > low) | |
25419 | { | |
36586728 | 25420 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 25421 | int mid = low + (high - low) / 2; |
9a619af0 | 25422 | |
36586728 | 25423 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
9c541725 | 25424 | cu_off = &mid_cu->sect_off; |
36586728 | 25425 | if (mid_cu->is_dwz > offset_in_dwz |
9c541725 | 25426 | || (mid_cu->is_dwz == offset_in_dwz && *cu_off >= sect_off)) |
ae038cb0 DJ |
25427 | high = mid; |
25428 | else | |
25429 | low = mid + 1; | |
25430 | } | |
25431 | gdb_assert (low == high); | |
36586728 | 25432 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
9c541725 PA |
25433 | cu_off = &this_cu->sect_off; |
25434 | if (this_cu->is_dwz != offset_in_dwz || *cu_off > sect_off) | |
ae038cb0 | 25435 | { |
36586728 | 25436 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 25437 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
25438 | "offset %s [in module %s]"), |
25439 | sect_offset_str (sect_off), | |
ed2dc618 | 25440 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 25441 | |
9c541725 PA |
25442 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
25443 | <= sect_off); | |
ae038cb0 DJ |
25444 | return dwarf2_per_objfile->all_comp_units[low-1]; |
25445 | } | |
25446 | else | |
25447 | { | |
25448 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
25449 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
9c541725 | 25450 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 25451 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 25452 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
25453 | return this_cu; |
25454 | } | |
25455 | } | |
25456 | ||
23745b47 | 25457 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 25458 | |
fcd3b13d SM |
25459 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
25460 | : per_cu (per_cu_), | |
25461 | mark (0), | |
25462 | has_loclist (0), | |
25463 | checked_producer (0), | |
25464 | producer_is_gxx_lt_4_6 (0), | |
25465 | producer_is_gcc_lt_4_3 (0), | |
25466 | producer_is_icc_lt_14 (0), | |
25467 | processing_has_namespace_info (0) | |
93311388 | 25468 | { |
fcd3b13d SM |
25469 | per_cu->cu = this; |
25470 | } | |
25471 | ||
25472 | /* Destroy a dwarf2_cu. */ | |
25473 | ||
25474 | dwarf2_cu::~dwarf2_cu () | |
25475 | { | |
25476 | per_cu->cu = NULL; | |
9816fde3 JK |
25477 | } |
25478 | ||
25479 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
25480 | ||
25481 | static void | |
95554aad TT |
25482 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
25483 | enum language pretend_language) | |
9816fde3 JK |
25484 | { |
25485 | struct attribute *attr; | |
25486 | ||
25487 | /* Set the language we're debugging. */ | |
25488 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
25489 | if (attr) | |
25490 | set_cu_language (DW_UNSND (attr), cu); | |
25491 | else | |
9cded63f | 25492 | { |
95554aad | 25493 | cu->language = pretend_language; |
9cded63f TT |
25494 | cu->language_defn = language_def (cu->language); |
25495 | } | |
dee91e82 | 25496 | |
7d45c7c3 | 25497 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
25498 | } |
25499 | ||
ae038cb0 DJ |
25500 | /* Free all cached compilation units. */ |
25501 | ||
25502 | static void | |
25503 | free_cached_comp_units (void *data) | |
25504 | { | |
ed2dc618 SM |
25505 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25506 | = (struct dwarf2_per_objfile *) data; | |
25507 | ||
330cdd98 | 25508 | dwarf2_per_objfile->free_cached_comp_units (); |
ae038cb0 DJ |
25509 | } |
25510 | ||
25511 | /* Increase the age counter on each cached compilation unit, and free | |
25512 | any that are too old. */ | |
25513 | ||
25514 | static void | |
ed2dc618 | 25515 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25516 | { |
25517 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
25518 | ||
25519 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
25520 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25521 | while (per_cu != NULL) | |
25522 | { | |
25523 | per_cu->cu->last_used ++; | |
b4f54984 | 25524 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
25525 | dwarf2_mark (per_cu->cu); |
25526 | per_cu = per_cu->cu->read_in_chain; | |
25527 | } | |
25528 | ||
25529 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25530 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25531 | while (per_cu != NULL) | |
25532 | { | |
25533 | struct dwarf2_per_cu_data *next_cu; | |
25534 | ||
25535 | next_cu = per_cu->cu->read_in_chain; | |
25536 | ||
25537 | if (!per_cu->cu->mark) | |
25538 | { | |
fcd3b13d | 25539 | delete per_cu->cu; |
ae038cb0 DJ |
25540 | *last_chain = next_cu; |
25541 | } | |
25542 | else | |
25543 | last_chain = &per_cu->cu->read_in_chain; | |
25544 | ||
25545 | per_cu = next_cu; | |
25546 | } | |
25547 | } | |
25548 | ||
25549 | /* Remove a single compilation unit from the cache. */ | |
25550 | ||
25551 | static void | |
dee91e82 | 25552 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
25553 | { |
25554 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
25555 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25556 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
25557 | |
25558 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25559 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25560 | while (per_cu != NULL) | |
25561 | { | |
25562 | struct dwarf2_per_cu_data *next_cu; | |
25563 | ||
25564 | next_cu = per_cu->cu->read_in_chain; | |
25565 | ||
dee91e82 | 25566 | if (per_cu == target_per_cu) |
ae038cb0 | 25567 | { |
fcd3b13d | 25568 | delete per_cu->cu; |
dee91e82 | 25569 | per_cu->cu = NULL; |
ae038cb0 DJ |
25570 | *last_chain = next_cu; |
25571 | break; | |
25572 | } | |
25573 | else | |
25574 | last_chain = &per_cu->cu->read_in_chain; | |
25575 | ||
25576 | per_cu = next_cu; | |
25577 | } | |
25578 | } | |
25579 | ||
fe3e1990 DJ |
25580 | /* Release all extra memory associated with OBJFILE. */ |
25581 | ||
25582 | void | |
25583 | dwarf2_free_objfile (struct objfile *objfile) | |
25584 | { | |
ed2dc618 SM |
25585 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25586 | = get_dwarf2_per_objfile (objfile); | |
fe3e1990 | 25587 | |
fd90ace4 | 25588 | delete dwarf2_per_objfile; |
fe3e1990 DJ |
25589 | } |
25590 | ||
dee91e82 DE |
25591 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25592 | We store these in a hash table separate from the DIEs, and preserve them | |
25593 | when the DIEs are flushed out of cache. | |
25594 | ||
25595 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25596 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25597 | or the type may come from a DWO file. Furthermore, while it's more logical |
25598 | to use per_cu->section+offset, with Fission the section with the data is in | |
25599 | the DWO file but we don't know that section at the point we need it. | |
25600 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25601 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25602 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25603 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25604 | |
dee91e82 | 25605 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25606 | { |
dee91e82 | 25607 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25608 | sect_offset sect_off; |
1c379e20 DJ |
25609 | struct type *type; |
25610 | }; | |
25611 | ||
dee91e82 | 25612 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25613 | |
25614 | static hashval_t | |
dee91e82 | 25615 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25616 | { |
9a3c8263 SM |
25617 | const struct dwarf2_per_cu_offset_and_type *ofs |
25618 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25619 | |
9c541725 | 25620 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25621 | } |
25622 | ||
dee91e82 | 25623 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25624 | |
25625 | static int | |
dee91e82 | 25626 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25627 | { |
9a3c8263 SM |
25628 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25629 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25630 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25631 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25632 | |
dee91e82 | 25633 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25634 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25635 | } |
25636 | ||
25637 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25638 | table if necessary. For convenience, return TYPE. |
25639 | ||
25640 | The DIEs reading must have careful ordering to: | |
25641 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
25642 | reading current DIE. | |
25643 | * Not trying to dereference contents of still incompletely read in types | |
25644 | while reading in other DIEs. | |
25645 | * Enable referencing still incompletely read in types just by a pointer to | |
25646 | the type without accessing its fields. | |
25647 | ||
25648 | Therefore caller should follow these rules: | |
25649 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25650 | before building the type and calling set_die_type. | |
e71ec853 | 25651 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25652 | possible before fetching more types to complete the current type. |
25653 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25654 | |
f792889a | 25655 | static struct type * |
1c379e20 DJ |
25656 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
25657 | { | |
518817b3 SM |
25658 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25659 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 25660 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 25661 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
25662 | struct attribute *attr; |
25663 | struct dynamic_prop prop; | |
1c379e20 | 25664 | |
b4ba55a1 JB |
25665 | /* For Ada types, make sure that the gnat-specific data is always |
25666 | initialized (if not already set). There are a few types where | |
25667 | we should not be doing so, because the type-specific area is | |
25668 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25669 | where the type-specific area is used to store the floatformat). | |
25670 | But this is not a problem, because the gnat-specific information | |
25671 | is actually not needed for these types. */ | |
25672 | if (need_gnat_info (cu) | |
25673 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
25674 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
25675 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
25676 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
25677 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
25678 | && !HAVE_GNAT_AUX_INFO (type)) |
25679 | INIT_GNAT_SPECIFIC (type); | |
25680 | ||
3f2f83dd KB |
25681 | /* Read DW_AT_allocated and set in type. */ |
25682 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
25683 | if (attr_form_is_block (attr)) | |
25684 | { | |
25685 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25686 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
25687 | } |
25688 | else if (attr != NULL) | |
25689 | { | |
25690 | complaint (&symfile_complaints, | |
9d8780f0 | 25691 | _("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 25692 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25693 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25694 | } |
25695 | ||
25696 | /* Read DW_AT_associated and set in type. */ | |
25697 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
25698 | if (attr_form_is_block (attr)) | |
25699 | { | |
25700 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25701 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
25702 | } |
25703 | else if (attr != NULL) | |
25704 | { | |
25705 | complaint (&symfile_complaints, | |
9d8780f0 | 25706 | _("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 25707 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25708 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25709 | } |
25710 | ||
3cdcd0ce JB |
25711 | /* Read DW_AT_data_location and set in type. */ |
25712 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
25713 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25714 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 25715 | |
dee91e82 | 25716 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25717 | { |
dee91e82 DE |
25718 | dwarf2_per_objfile->die_type_hash = |
25719 | htab_create_alloc_ex (127, | |
25720 | per_cu_offset_and_type_hash, | |
25721 | per_cu_offset_and_type_eq, | |
25722 | NULL, | |
25723 | &objfile->objfile_obstack, | |
25724 | hashtab_obstack_allocate, | |
25725 | dummy_obstack_deallocate); | |
f792889a | 25726 | } |
1c379e20 | 25727 | |
dee91e82 | 25728 | ofs.per_cu = cu->per_cu; |
9c541725 | 25729 | ofs.sect_off = die->sect_off; |
1c379e20 | 25730 | ofs.type = type; |
dee91e82 DE |
25731 | slot = (struct dwarf2_per_cu_offset_and_type **) |
25732 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
25733 | if (*slot) |
25734 | complaint (&symfile_complaints, | |
9d8780f0 SM |
25735 | _("A problem internal to GDB: DIE %s has type already set"), |
25736 | sect_offset_str (die->sect_off)); | |
8d749320 SM |
25737 | *slot = XOBNEW (&objfile->objfile_obstack, |
25738 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25739 | **slot = ofs; |
f792889a | 25740 | return type; |
1c379e20 DJ |
25741 | } |
25742 | ||
9c541725 | 25743 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25744 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25745 | |
25746 | static struct type * | |
9c541725 | 25747 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 25748 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 25749 | { |
dee91e82 | 25750 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 25751 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 25752 | |
dee91e82 | 25753 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25754 | return NULL; |
1c379e20 | 25755 | |
dee91e82 | 25756 | ofs.per_cu = per_cu; |
9c541725 | 25757 | ofs.sect_off = sect_off; |
9a3c8263 SM |
25758 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
25759 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
25760 | if (slot) |
25761 | return slot->type; | |
25762 | else | |
25763 | return NULL; | |
25764 | } | |
25765 | ||
02142a6c | 25766 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25767 | or return NULL if DIE does not have a saved type. */ |
25768 | ||
25769 | static struct type * | |
25770 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25771 | { | |
9c541725 | 25772 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
25773 | } |
25774 | ||
10b3939b DJ |
25775 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25776 | ||
25777 | static void | |
25778 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25779 | struct dwarf2_per_cu_data *ref_per_cu) | |
25780 | { | |
25781 | void **slot; | |
25782 | ||
25783 | if (cu->dependencies == NULL) | |
25784 | cu->dependencies | |
25785 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25786 | NULL, &cu->comp_unit_obstack, | |
25787 | hashtab_obstack_allocate, | |
25788 | dummy_obstack_deallocate); | |
25789 | ||
25790 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25791 | if (*slot == NULL) | |
25792 | *slot = ref_per_cu; | |
25793 | } | |
1c379e20 | 25794 | |
f504f079 DE |
25795 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25796 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
25797 | cache that we must keep because we are keeping CU. */ |
25798 | ||
10b3939b DJ |
25799 | static int |
25800 | dwarf2_mark_helper (void **slot, void *data) | |
25801 | { | |
25802 | struct dwarf2_per_cu_data *per_cu; | |
25803 | ||
25804 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
25805 | |
25806 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25807 | reading of the chain. As such dependencies remain valid it is not much | |
25808 | useful to track and undo them during QUIT cleanups. */ | |
25809 | if (per_cu->cu == NULL) | |
25810 | return 1; | |
25811 | ||
10b3939b DJ |
25812 | if (per_cu->cu->mark) |
25813 | return 1; | |
25814 | per_cu->cu->mark = 1; | |
25815 | ||
25816 | if (per_cu->cu->dependencies != NULL) | |
25817 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
25818 | ||
25819 | return 1; | |
25820 | } | |
25821 | ||
f504f079 DE |
25822 | /* Set the mark field in CU and in every other compilation unit in the |
25823 | cache that we must keep because we are keeping CU. */ | |
25824 | ||
ae038cb0 DJ |
25825 | static void |
25826 | dwarf2_mark (struct dwarf2_cu *cu) | |
25827 | { | |
25828 | if (cu->mark) | |
25829 | return; | |
25830 | cu->mark = 1; | |
10b3939b DJ |
25831 | if (cu->dependencies != NULL) |
25832 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
25833 | } |
25834 | ||
25835 | static void | |
25836 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
25837 | { | |
25838 | while (per_cu) | |
25839 | { | |
25840 | per_cu->cu->mark = 0; | |
25841 | per_cu = per_cu->cu->read_in_chain; | |
25842 | } | |
72bf9492 DJ |
25843 | } |
25844 | ||
72bf9492 DJ |
25845 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25846 | is its offset in .debug_info for this objfile. */ | |
25847 | ||
25848 | static hashval_t | |
25849 | partial_die_hash (const void *item) | |
25850 | { | |
9a3c8263 SM |
25851 | const struct partial_die_info *part_die |
25852 | = (const struct partial_die_info *) item; | |
9a619af0 | 25853 | |
9c541725 | 25854 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25855 | } |
25856 | ||
25857 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25858 | are equal if they have the same offset. */ | |
25859 | ||
25860 | static int | |
25861 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25862 | { | |
9a3c8263 SM |
25863 | const struct partial_die_info *part_die_lhs |
25864 | = (const struct partial_die_info *) item_lhs; | |
25865 | const struct partial_die_info *part_die_rhs | |
25866 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25867 | |
9c541725 | 25868 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25869 | } |
25870 | ||
b4f54984 DE |
25871 | static struct cmd_list_element *set_dwarf_cmdlist; |
25872 | static struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
25873 | |
25874 | static void | |
981a3fb3 | 25875 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 25876 | { |
b4f54984 | 25877 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 25878 | gdb_stdout); |
ae038cb0 DJ |
25879 | } |
25880 | ||
25881 | static void | |
981a3fb3 | 25882 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 25883 | { |
b4f54984 | 25884 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
25885 | } |
25886 | ||
ae2de4f8 | 25887 | /* The "save gdb-index" command. */ |
9291a0cd | 25888 | |
437afbb8 JK |
25889 | /* Write SIZE bytes from the buffer pointed to by DATA to FILE, with |
25890 | error checking. */ | |
25891 | ||
25892 | static void | |
25893 | file_write (FILE *file, const void *data, size_t size) | |
25894 | { | |
25895 | if (fwrite (data, 1, size, file) != size) | |
25896 | error (_("couldn't data write to file")); | |
25897 | } | |
25898 | ||
25899 | /* Write the contents of VEC to FILE, with error checking. */ | |
25900 | ||
25901 | template<typename Elem, typename Alloc> | |
25902 | static void | |
25903 | file_write (FILE *file, const std::vector<Elem, Alloc> &vec) | |
25904 | { | |
25905 | file_write (file, vec.data (), vec.size () * sizeof (vec[0])); | |
25906 | } | |
25907 | ||
bc8f2430 JK |
25908 | /* In-memory buffer to prepare data to be written later to a file. */ |
25909 | class data_buf | |
9291a0cd | 25910 | { |
bc8f2430 | 25911 | public: |
bc8f2430 JK |
25912 | /* Copy DATA to the end of the buffer. */ |
25913 | template<typename T> | |
25914 | void append_data (const T &data) | |
25915 | { | |
25916 | std::copy (reinterpret_cast<const gdb_byte *> (&data), | |
25917 | reinterpret_cast<const gdb_byte *> (&data + 1), | |
c2f134ac | 25918 | grow (sizeof (data))); |
bc8f2430 | 25919 | } |
b89be57b | 25920 | |
c2f134ac PA |
25921 | /* Copy CSTR (a zero-terminated string) to the end of buffer. The |
25922 | terminating zero is appended too. */ | |
bc8f2430 JK |
25923 | void append_cstr0 (const char *cstr) |
25924 | { | |
25925 | const size_t size = strlen (cstr) + 1; | |
c2f134ac PA |
25926 | std::copy (cstr, cstr + size, grow (size)); |
25927 | } | |
25928 | ||
437afbb8 JK |
25929 | /* Store INPUT as ULEB128 to the end of buffer. */ |
25930 | void append_unsigned_leb128 (ULONGEST input) | |
25931 | { | |
25932 | for (;;) | |
25933 | { | |
25934 | gdb_byte output = input & 0x7f; | |
25935 | input >>= 7; | |
25936 | if (input) | |
25937 | output |= 0x80; | |
25938 | append_data (output); | |
25939 | if (input == 0) | |
25940 | break; | |
25941 | } | |
25942 | } | |
25943 | ||
c2f134ac PA |
25944 | /* Accept a host-format integer in VAL and append it to the buffer |
25945 | as a target-format integer which is LEN bytes long. */ | |
25946 | void append_uint (size_t len, bfd_endian byte_order, ULONGEST val) | |
25947 | { | |
25948 | ::store_unsigned_integer (grow (len), len, byte_order, val); | |
bc8f2430 | 25949 | } |
9291a0cd | 25950 | |
bc8f2430 JK |
25951 | /* Return the size of the buffer. */ |
25952 | size_t size () const | |
25953 | { | |
25954 | return m_vec.size (); | |
25955 | } | |
25956 | ||
437afbb8 JK |
25957 | /* Return true iff the buffer is empty. */ |
25958 | bool empty () const | |
25959 | { | |
25960 | return m_vec.empty (); | |
25961 | } | |
25962 | ||
bc8f2430 JK |
25963 | /* Write the buffer to FILE. */ |
25964 | void file_write (FILE *file) const | |
25965 | { | |
437afbb8 | 25966 | ::file_write (file, m_vec); |
bc8f2430 JK |
25967 | } |
25968 | ||
25969 | private: | |
c2f134ac PA |
25970 | /* Grow SIZE bytes at the end of the buffer. Returns a pointer to |
25971 | the start of the new block. */ | |
25972 | gdb_byte *grow (size_t size) | |
25973 | { | |
25974 | m_vec.resize (m_vec.size () + size); | |
25975 | return &*m_vec.end () - size; | |
25976 | } | |
25977 | ||
d5722aa2 | 25978 | gdb::byte_vector m_vec; |
bc8f2430 | 25979 | }; |
9291a0cd TT |
25980 | |
25981 | /* An entry in the symbol table. */ | |
25982 | struct symtab_index_entry | |
25983 | { | |
25984 | /* The name of the symbol. */ | |
25985 | const char *name; | |
25986 | /* The offset of the name in the constant pool. */ | |
25987 | offset_type index_offset; | |
25988 | /* A sorted vector of the indices of all the CUs that hold an object | |
25989 | of this name. */ | |
bc8f2430 | 25990 | std::vector<offset_type> cu_indices; |
9291a0cd TT |
25991 | }; |
25992 | ||
25993 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
25994 | struct mapped_symtab | |
25995 | { | |
bc8f2430 JK |
25996 | mapped_symtab () |
25997 | { | |
25998 | data.resize (1024); | |
25999 | } | |
b89be57b | 26000 | |
bc8f2430 | 26001 | offset_type n_elements = 0; |
4b76cda9 | 26002 | std::vector<symtab_index_entry> data; |
bc8f2430 | 26003 | }; |
9291a0cd | 26004 | |
bc8f2430 | 26005 | /* Find a slot in SYMTAB for the symbol NAME. Returns a reference to |
559a7a62 JK |
26006 | the slot. |
26007 | ||
26008 | Function is used only during write_hash_table so no index format backward | |
26009 | compatibility is needed. */ | |
b89be57b | 26010 | |
4b76cda9 | 26011 | static symtab_index_entry & |
9291a0cd TT |
26012 | find_slot (struct mapped_symtab *symtab, const char *name) |
26013 | { | |
559a7a62 | 26014 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd | 26015 | |
bc8f2430 JK |
26016 | index = hash & (symtab->data.size () - 1); |
26017 | step = ((hash * 17) & (symtab->data.size () - 1)) | 1; | |
9291a0cd TT |
26018 | |
26019 | for (;;) | |
26020 | { | |
4b76cda9 PA |
26021 | if (symtab->data[index].name == NULL |
26022 | || strcmp (name, symtab->data[index].name) == 0) | |
bc8f2430 JK |
26023 | return symtab->data[index]; |
26024 | index = (index + step) & (symtab->data.size () - 1); | |
9291a0cd TT |
26025 | } |
26026 | } | |
26027 | ||
26028 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 26029 | |
9291a0cd TT |
26030 | static void |
26031 | hash_expand (struct mapped_symtab *symtab) | |
26032 | { | |
bc8f2430 | 26033 | auto old_entries = std::move (symtab->data); |
9291a0cd | 26034 | |
bc8f2430 JK |
26035 | symtab->data.clear (); |
26036 | symtab->data.resize (old_entries.size () * 2); | |
9291a0cd | 26037 | |
bc8f2430 | 26038 | for (auto &it : old_entries) |
4b76cda9 | 26039 | if (it.name != NULL) |
bc8f2430 | 26040 | { |
4b76cda9 | 26041 | auto &ref = find_slot (symtab, it.name); |
bc8f2430 JK |
26042 | ref = std::move (it); |
26043 | } | |
9291a0cd TT |
26044 | } |
26045 | ||
156942c7 DE |
26046 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
26047 | CU_INDEX is the index of the CU in which the symbol appears. | |
26048 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 26049 | |
9291a0cd TT |
26050 | static void |
26051 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 26052 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
26053 | offset_type cu_index) |
26054 | { | |
156942c7 | 26055 | offset_type cu_index_and_attrs; |
9291a0cd TT |
26056 | |
26057 | ++symtab->n_elements; | |
bc8f2430 | 26058 | if (4 * symtab->n_elements / 3 >= symtab->data.size ()) |
9291a0cd TT |
26059 | hash_expand (symtab); |
26060 | ||
4b76cda9 PA |
26061 | symtab_index_entry &slot = find_slot (symtab, name); |
26062 | if (slot.name == NULL) | |
9291a0cd | 26063 | { |
4b76cda9 | 26064 | slot.name = name; |
156942c7 | 26065 | /* index_offset is set later. */ |
9291a0cd | 26066 | } |
156942c7 DE |
26067 | |
26068 | cu_index_and_attrs = 0; | |
26069 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
26070 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
26071 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
26072 | ||
26073 | /* We don't want to record an index value twice as we want to avoid the | |
26074 | duplication. | |
26075 | We process all global symbols and then all static symbols | |
26076 | (which would allow us to avoid the duplication by only having to check | |
26077 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
26078 | To keep things simple we don't worry about the duplication here and | |
26079 | sort and uniqufy the list after we've processed all symbols. */ | |
4b76cda9 | 26080 | slot.cu_indices.push_back (cu_index_and_attrs); |
156942c7 DE |
26081 | } |
26082 | ||
26083 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
26084 | ||
26085 | static void | |
26086 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
26087 | { | |
4b76cda9 | 26088 | for (auto &entry : symtab->data) |
156942c7 | 26089 | { |
4b76cda9 | 26090 | if (entry.name != NULL && !entry.cu_indices.empty ()) |
156942c7 | 26091 | { |
4b76cda9 | 26092 | auto &cu_indices = entry.cu_indices; |
6fd931f2 PA |
26093 | std::sort (cu_indices.begin (), cu_indices.end ()); |
26094 | auto from = std::unique (cu_indices.begin (), cu_indices.end ()); | |
26095 | cu_indices.erase (from, cu_indices.end ()); | |
156942c7 DE |
26096 | } |
26097 | } | |
9291a0cd TT |
26098 | } |
26099 | ||
bc8f2430 JK |
26100 | /* A form of 'const char *' suitable for container keys. Only the |
26101 | pointer is stored. The strings themselves are compared, not the | |
26102 | pointers. */ | |
26103 | class c_str_view | |
9291a0cd | 26104 | { |
bc8f2430 JK |
26105 | public: |
26106 | c_str_view (const char *cstr) | |
26107 | : m_cstr (cstr) | |
26108 | {} | |
9291a0cd | 26109 | |
bc8f2430 JK |
26110 | bool operator== (const c_str_view &other) const |
26111 | { | |
26112 | return strcmp (m_cstr, other.m_cstr) == 0; | |
26113 | } | |
9291a0cd | 26114 | |
437afbb8 JK |
26115 | /* Return the underlying C string. Note, the returned string is |
26116 | only a reference with lifetime of this object. */ | |
26117 | const char *c_str () const | |
26118 | { | |
26119 | return m_cstr; | |
26120 | } | |
26121 | ||
bc8f2430 JK |
26122 | private: |
26123 | friend class c_str_view_hasher; | |
26124 | const char *const m_cstr; | |
26125 | }; | |
9291a0cd | 26126 | |
bc8f2430 JK |
26127 | /* A std::unordered_map::hasher for c_str_view that uses the right |
26128 | hash function for strings in a mapped index. */ | |
26129 | class c_str_view_hasher | |
26130 | { | |
26131 | public: | |
26132 | size_t operator () (const c_str_view &x) const | |
26133 | { | |
26134 | return mapped_index_string_hash (INT_MAX, x.m_cstr); | |
26135 | } | |
26136 | }; | |
b89be57b | 26137 | |
bc8f2430 JK |
26138 | /* A std::unordered_map::hasher for std::vector<>. */ |
26139 | template<typename T> | |
26140 | class vector_hasher | |
9291a0cd | 26141 | { |
bc8f2430 JK |
26142 | public: |
26143 | size_t operator () (const std::vector<T> &key) const | |
26144 | { | |
26145 | return iterative_hash (key.data (), | |
26146 | sizeof (key.front ()) * key.size (), 0); | |
26147 | } | |
26148 | }; | |
9291a0cd | 26149 | |
bc8f2430 JK |
26150 | /* Write the mapped hash table SYMTAB to the data buffer OUTPUT, with |
26151 | constant pool entries going into the data buffer CPOOL. */ | |
3876f04e | 26152 | |
bc8f2430 JK |
26153 | static void |
26154 | write_hash_table (mapped_symtab *symtab, data_buf &output, data_buf &cpool) | |
26155 | { | |
26156 | { | |
26157 | /* Elements are sorted vectors of the indices of all the CUs that | |
26158 | hold an object of this name. */ | |
26159 | std::unordered_map<std::vector<offset_type>, offset_type, | |
26160 | vector_hasher<offset_type>> | |
26161 | symbol_hash_table; | |
26162 | ||
26163 | /* We add all the index vectors to the constant pool first, to | |
26164 | ensure alignment is ok. */ | |
4b76cda9 | 26165 | for (symtab_index_entry &entry : symtab->data) |
bc8f2430 | 26166 | { |
4b76cda9 | 26167 | if (entry.name == NULL) |
bc8f2430 | 26168 | continue; |
4b76cda9 | 26169 | gdb_assert (entry.index_offset == 0); |
70a1152b PA |
26170 | |
26171 | /* Finding before inserting is faster than always trying to | |
26172 | insert, because inserting always allocates a node, does the | |
26173 | lookup, and then destroys the new node if another node | |
26174 | already had the same key. C++17 try_emplace will avoid | |
26175 | this. */ | |
26176 | const auto found | |
4b76cda9 | 26177 | = symbol_hash_table.find (entry.cu_indices); |
70a1152b PA |
26178 | if (found != symbol_hash_table.end ()) |
26179 | { | |
4b76cda9 | 26180 | entry.index_offset = found->second; |
70a1152b PA |
26181 | continue; |
26182 | } | |
26183 | ||
4b76cda9 PA |
26184 | symbol_hash_table.emplace (entry.cu_indices, cpool.size ()); |
26185 | entry.index_offset = cpool.size (); | |
26186 | cpool.append_data (MAYBE_SWAP (entry.cu_indices.size ())); | |
26187 | for (const auto index : entry.cu_indices) | |
26188 | cpool.append_data (MAYBE_SWAP (index)); | |
bc8f2430 JK |
26189 | } |
26190 | } | |
9291a0cd TT |
26191 | |
26192 | /* Now write out the hash table. */ | |
bc8f2430 | 26193 | std::unordered_map<c_str_view, offset_type, c_str_view_hasher> str_table; |
4b76cda9 | 26194 | for (const auto &entry : symtab->data) |
9291a0cd TT |
26195 | { |
26196 | offset_type str_off, vec_off; | |
26197 | ||
4b76cda9 | 26198 | if (entry.name != NULL) |
9291a0cd | 26199 | { |
4b76cda9 | 26200 | const auto insertpair = str_table.emplace (entry.name, cpool.size ()); |
bc8f2430 | 26201 | if (insertpair.second) |
4b76cda9 | 26202 | cpool.append_cstr0 (entry.name); |
bc8f2430 | 26203 | str_off = insertpair.first->second; |
4b76cda9 | 26204 | vec_off = entry.index_offset; |
9291a0cd TT |
26205 | } |
26206 | else | |
26207 | { | |
26208 | /* While 0 is a valid constant pool index, it is not valid | |
26209 | to have 0 for both offsets. */ | |
26210 | str_off = 0; | |
26211 | vec_off = 0; | |
26212 | } | |
26213 | ||
bc8f2430 JK |
26214 | output.append_data (MAYBE_SWAP (str_off)); |
26215 | output.append_data (MAYBE_SWAP (vec_off)); | |
9291a0cd | 26216 | } |
9291a0cd TT |
26217 | } |
26218 | ||
bc8f2430 | 26219 | typedef std::unordered_map<partial_symtab *, unsigned int> psym_index_map; |
0a5429f6 DE |
26220 | |
26221 | /* Helper struct for building the address table. */ | |
26222 | struct addrmap_index_data | |
26223 | { | |
bc8f2430 JK |
26224 | addrmap_index_data (data_buf &addr_vec_, psym_index_map &cu_index_htab_) |
26225 | : addr_vec (addr_vec_), cu_index_htab (cu_index_htab_) | |
26226 | {} | |
26227 | ||
0a5429f6 | 26228 | struct objfile *objfile; |
bc8f2430 JK |
26229 | data_buf &addr_vec; |
26230 | psym_index_map &cu_index_htab; | |
0a5429f6 DE |
26231 | |
26232 | /* Non-zero if the previous_* fields are valid. | |
26233 | We can't write an entry until we see the next entry (since it is only then | |
26234 | that we know the end of the entry). */ | |
26235 | int previous_valid; | |
26236 | /* Index of the CU in the table of all CUs in the index file. */ | |
26237 | unsigned int previous_cu_index; | |
0963b4bd | 26238 | /* Start address of the CU. */ |
0a5429f6 DE |
26239 | CORE_ADDR previous_cu_start; |
26240 | }; | |
26241 | ||
bc8f2430 | 26242 | /* Write an address entry to ADDR_VEC. */ |
b89be57b | 26243 | |
9291a0cd | 26244 | static void |
bc8f2430 | 26245 | add_address_entry (struct objfile *objfile, data_buf &addr_vec, |
0a5429f6 | 26246 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) |
9291a0cd | 26247 | { |
9291a0cd TT |
26248 | CORE_ADDR baseaddr; |
26249 | ||
26250 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
26251 | ||
c2f134ac PA |
26252 | addr_vec.append_uint (8, BFD_ENDIAN_LITTLE, start - baseaddr); |
26253 | addr_vec.append_uint (8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
bc8f2430 | 26254 | addr_vec.append_data (MAYBE_SWAP (cu_index)); |
0a5429f6 DE |
26255 | } |
26256 | ||
26257 | /* Worker function for traversing an addrmap to build the address table. */ | |
26258 | ||
26259 | static int | |
26260 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
26261 | { | |
9a3c8263 SM |
26262 | struct addrmap_index_data *data = (struct addrmap_index_data *) datap; |
26263 | struct partial_symtab *pst = (struct partial_symtab *) obj; | |
0a5429f6 DE |
26264 | |
26265 | if (data->previous_valid) | |
bc8f2430 | 26266 | add_address_entry (data->objfile, data->addr_vec, |
0a5429f6 DE |
26267 | data->previous_cu_start, start_addr, |
26268 | data->previous_cu_index); | |
26269 | ||
26270 | data->previous_cu_start = start_addr; | |
26271 | if (pst != NULL) | |
26272 | { | |
bc8f2430 JK |
26273 | const auto it = data->cu_index_htab.find (pst); |
26274 | gdb_assert (it != data->cu_index_htab.cend ()); | |
26275 | data->previous_cu_index = it->second; | |
0a5429f6 DE |
26276 | data->previous_valid = 1; |
26277 | } | |
26278 | else | |
bc8f2430 | 26279 | data->previous_valid = 0; |
0a5429f6 DE |
26280 | |
26281 | return 0; | |
26282 | } | |
26283 | ||
bc8f2430 | 26284 | /* Write OBJFILE's address map to ADDR_VEC. |
0a5429f6 DE |
26285 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices |
26286 | in the index file. */ | |
26287 | ||
26288 | static void | |
bc8f2430 JK |
26289 | write_address_map (struct objfile *objfile, data_buf &addr_vec, |
26290 | psym_index_map &cu_index_htab) | |
0a5429f6 | 26291 | { |
bc8f2430 | 26292 | struct addrmap_index_data addrmap_index_data (addr_vec, cu_index_htab); |
0a5429f6 DE |
26293 | |
26294 | /* When writing the address table, we have to cope with the fact that | |
26295 | the addrmap iterator only provides the start of a region; we have to | |
26296 | wait until the next invocation to get the start of the next region. */ | |
26297 | ||
26298 | addrmap_index_data.objfile = objfile; | |
0a5429f6 DE |
26299 | addrmap_index_data.previous_valid = 0; |
26300 | ||
26301 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
26302 | &addrmap_index_data); | |
26303 | ||
26304 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
26305 | is valid, but we should still handle it. | |
26306 | The end address is recorded as the start of the next region, but that | |
26307 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
26308 | anyway. */ | |
26309 | if (addrmap_index_data.previous_valid) | |
bc8f2430 | 26310 | add_address_entry (objfile, addr_vec, |
0a5429f6 DE |
26311 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, |
26312 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
26313 | } |
26314 | ||
156942c7 DE |
26315 | /* Return the symbol kind of PSYM. */ |
26316 | ||
26317 | static gdb_index_symbol_kind | |
26318 | symbol_kind (struct partial_symbol *psym) | |
26319 | { | |
26320 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
26321 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
26322 | ||
26323 | switch (domain) | |
26324 | { | |
26325 | case VAR_DOMAIN: | |
26326 | switch (aclass) | |
26327 | { | |
26328 | case LOC_BLOCK: | |
26329 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
26330 | case LOC_TYPEDEF: | |
26331 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
26332 | case LOC_COMPUTED: | |
26333 | case LOC_CONST_BYTES: | |
26334 | case LOC_OPTIMIZED_OUT: | |
26335 | case LOC_STATIC: | |
26336 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
26337 | case LOC_CONST: | |
26338 | /* Note: It's currently impossible to recognize psyms as enum values | |
26339 | short of reading the type info. For now punt. */ | |
26340 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
26341 | default: | |
26342 | /* There are other LOC_FOO values that one might want to classify | |
26343 | as variables, but dwarf2read.c doesn't currently use them. */ | |
26344 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
26345 | } | |
26346 | case STRUCT_DOMAIN: | |
26347 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
26348 | default: | |
26349 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
26350 | } | |
26351 | } | |
26352 | ||
9291a0cd | 26353 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 26354 | |
9291a0cd TT |
26355 | static void |
26356 | write_psymbols (struct mapped_symtab *symtab, | |
bc8f2430 | 26357 | std::unordered_set<partial_symbol *> &psyms_seen, |
9291a0cd TT |
26358 | struct partial_symbol **psymp, |
26359 | int count, | |
987d643c TT |
26360 | offset_type cu_index, |
26361 | int is_static) | |
9291a0cd TT |
26362 | { |
26363 | for (; count-- > 0; ++psymp) | |
26364 | { | |
156942c7 | 26365 | struct partial_symbol *psym = *psymp; |
987d643c | 26366 | |
156942c7 | 26367 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 26368 | error (_("Ada is not currently supported by the index")); |
987d643c | 26369 | |
987d643c | 26370 | /* Only add a given psymbol once. */ |
bc8f2430 | 26371 | if (psyms_seen.insert (psym).second) |
987d643c | 26372 | { |
156942c7 DE |
26373 | gdb_index_symbol_kind kind = symbol_kind (psym); |
26374 | ||
156942c7 DE |
26375 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), |
26376 | is_static, kind, cu_index); | |
987d643c | 26377 | } |
9291a0cd TT |
26378 | } |
26379 | } | |
26380 | ||
1fd400ff TT |
26381 | /* A helper struct used when iterating over debug_types. */ |
26382 | struct signatured_type_index_data | |
26383 | { | |
bc8f2430 JK |
26384 | signatured_type_index_data (data_buf &types_list_, |
26385 | std::unordered_set<partial_symbol *> &psyms_seen_) | |
26386 | : types_list (types_list_), psyms_seen (psyms_seen_) | |
26387 | {} | |
26388 | ||
1fd400ff TT |
26389 | struct objfile *objfile; |
26390 | struct mapped_symtab *symtab; | |
bc8f2430 JK |
26391 | data_buf &types_list; |
26392 | std::unordered_set<partial_symbol *> &psyms_seen; | |
1fd400ff TT |
26393 | int cu_index; |
26394 | }; | |
26395 | ||
26396 | /* A helper function that writes a single signatured_type to an | |
26397 | obstack. */ | |
b89be57b | 26398 | |
1fd400ff TT |
26399 | static int |
26400 | write_one_signatured_type (void **slot, void *d) | |
26401 | { | |
9a3c8263 SM |
26402 | struct signatured_type_index_data *info |
26403 | = (struct signatured_type_index_data *) d; | |
1fd400ff | 26404 | struct signatured_type *entry = (struct signatured_type *) *slot; |
0186c6a7 | 26405 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; |
1fd400ff TT |
26406 | |
26407 | write_psymbols (info->symtab, | |
987d643c | 26408 | info->psyms_seen, |
af5bf4ad | 26409 | &info->objfile->global_psymbols[psymtab->globals_offset], |
987d643c TT |
26410 | psymtab->n_global_syms, info->cu_index, |
26411 | 0); | |
1fd400ff | 26412 | write_psymbols (info->symtab, |
987d643c | 26413 | info->psyms_seen, |
af5bf4ad | 26414 | &info->objfile->static_psymbols[psymtab->statics_offset], |
987d643c TT |
26415 | psymtab->n_static_syms, info->cu_index, |
26416 | 1); | |
1fd400ff | 26417 | |
c2f134ac PA |
26418 | info->types_list.append_uint (8, BFD_ENDIAN_LITTLE, |
26419 | to_underlying (entry->per_cu.sect_off)); | |
26420 | info->types_list.append_uint (8, BFD_ENDIAN_LITTLE, | |
26421 | to_underlying (entry->type_offset_in_tu)); | |
26422 | info->types_list.append_uint (8, BFD_ENDIAN_LITTLE, entry->signature); | |
1fd400ff TT |
26423 | |
26424 | ++info->cu_index; | |
26425 | ||
26426 | return 1; | |
26427 | } | |
26428 | ||
e8f8bcb3 PA |
26429 | /* Recurse into all "included" dependencies and count their symbols as |
26430 | if they appeared in this psymtab. */ | |
26431 | ||
26432 | static void | |
26433 | recursively_count_psymbols (struct partial_symtab *psymtab, | |
26434 | size_t &psyms_seen) | |
26435 | { | |
26436 | for (int i = 0; i < psymtab->number_of_dependencies; ++i) | |
26437 | if (psymtab->dependencies[i]->user != NULL) | |
26438 | recursively_count_psymbols (psymtab->dependencies[i], | |
26439 | psyms_seen); | |
26440 | ||
26441 | psyms_seen += psymtab->n_global_syms; | |
26442 | psyms_seen += psymtab->n_static_syms; | |
26443 | } | |
26444 | ||
95554aad TT |
26445 | /* Recurse into all "included" dependencies and write their symbols as |
26446 | if they appeared in this psymtab. */ | |
26447 | ||
26448 | static void | |
26449 | recursively_write_psymbols (struct objfile *objfile, | |
26450 | struct partial_symtab *psymtab, | |
26451 | struct mapped_symtab *symtab, | |
bc8f2430 | 26452 | std::unordered_set<partial_symbol *> &psyms_seen, |
95554aad TT |
26453 | offset_type cu_index) |
26454 | { | |
26455 | int i; | |
26456 | ||
26457 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
26458 | if (psymtab->dependencies[i]->user != NULL) | |
26459 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
26460 | symtab, psyms_seen, cu_index); | |
26461 | ||
26462 | write_psymbols (symtab, | |
26463 | psyms_seen, | |
af5bf4ad | 26464 | &objfile->global_psymbols[psymtab->globals_offset], |
95554aad TT |
26465 | psymtab->n_global_syms, cu_index, |
26466 | 0); | |
26467 | write_psymbols (symtab, | |
26468 | psyms_seen, | |
af5bf4ad | 26469 | &objfile->static_psymbols[psymtab->statics_offset], |
95554aad TT |
26470 | psymtab->n_static_syms, cu_index, |
26471 | 1); | |
26472 | } | |
26473 | ||
437afbb8 JK |
26474 | /* DWARF-5 .debug_names builder. */ |
26475 | class debug_names | |
26476 | { | |
26477 | public: | |
ed2dc618 SM |
26478 | debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, bool is_dwarf64, |
26479 | bfd_endian dwarf5_byte_order) | |
437afbb8 JK |
26480 | : m_dwarf5_byte_order (dwarf5_byte_order), |
26481 | m_dwarf32 (dwarf5_byte_order), | |
26482 | m_dwarf64 (dwarf5_byte_order), | |
26483 | m_dwarf (is_dwarf64 | |
26484 | ? static_cast<dwarf &> (m_dwarf64) | |
26485 | : static_cast<dwarf &> (m_dwarf32)), | |
26486 | m_name_table_string_offs (m_dwarf.name_table_string_offs), | |
ed2dc618 SM |
26487 | m_name_table_entry_offs (m_dwarf.name_table_entry_offs), |
26488 | m_debugstrlookup (dwarf2_per_objfile) | |
437afbb8 | 26489 | {} |
9291a0cd | 26490 | |
8af5c486 JK |
26491 | int dwarf5_offset_size () const |
26492 | { | |
26493 | const bool dwarf5_is_dwarf64 = &m_dwarf == &m_dwarf64; | |
26494 | return dwarf5_is_dwarf64 ? 8 : 4; | |
26495 | } | |
26496 | ||
26497 | /* Is this symbol from DW_TAG_compile_unit or DW_TAG_type_unit? */ | |
26498 | enum class unit_kind { cu, tu }; | |
26499 | ||
437afbb8 | 26500 | /* Insert one symbol. */ |
8af5c486 JK |
26501 | void insert (const partial_symbol *psym, int cu_index, bool is_static, |
26502 | unit_kind kind) | |
437afbb8 JK |
26503 | { |
26504 | const int dwarf_tag = psymbol_tag (psym); | |
26505 | if (dwarf_tag == 0) | |
26506 | return; | |
26507 | const char *const name = SYMBOL_SEARCH_NAME (psym); | |
26508 | const auto insertpair | |
26509 | = m_name_to_value_set.emplace (c_str_view (name), | |
26510 | std::set<symbol_value> ()); | |
26511 | std::set<symbol_value> &value_set = insertpair.first->second; | |
8af5c486 | 26512 | value_set.emplace (symbol_value (dwarf_tag, cu_index, is_static, kind)); |
437afbb8 | 26513 | } |
9291a0cd | 26514 | |
437afbb8 JK |
26515 | /* Build all the tables. All symbols must be already inserted. |
26516 | This function does not call file_write, caller has to do it | |
26517 | afterwards. */ | |
26518 | void build () | |
26519 | { | |
26520 | /* Verify the build method has not be called twice. */ | |
26521 | gdb_assert (m_abbrev_table.empty ()); | |
26522 | const size_t name_count = m_name_to_value_set.size (); | |
26523 | m_bucket_table.resize | |
26524 | (std::pow (2, std::ceil (std::log2 (name_count * 4 / 3)))); | |
26525 | m_hash_table.reserve (name_count); | |
26526 | m_name_table_string_offs.reserve (name_count); | |
26527 | m_name_table_entry_offs.reserve (name_count); | |
26528 | ||
26529 | /* Map each hash of symbol to its name and value. */ | |
26530 | struct hash_it_pair | |
26531 | { | |
26532 | uint32_t hash; | |
26533 | decltype (m_name_to_value_set)::const_iterator it; | |
26534 | }; | |
26535 | std::vector<std::forward_list<hash_it_pair>> bucket_hash; | |
26536 | bucket_hash.resize (m_bucket_table.size ()); | |
26537 | for (decltype (m_name_to_value_set)::const_iterator it | |
26538 | = m_name_to_value_set.cbegin (); | |
26539 | it != m_name_to_value_set.cend (); | |
26540 | ++it) | |
26541 | { | |
26542 | const char *const name = it->first.c_str (); | |
26543 | const uint32_t hash = dwarf5_djb_hash (name); | |
26544 | hash_it_pair hashitpair; | |
26545 | hashitpair.hash = hash; | |
26546 | hashitpair.it = it; | |
26547 | auto &slot = bucket_hash[hash % bucket_hash.size()]; | |
26548 | slot.push_front (std::move (hashitpair)); | |
26549 | } | |
26550 | for (size_t bucket_ix = 0; bucket_ix < bucket_hash.size (); ++bucket_ix) | |
26551 | { | |
26552 | const std::forward_list<hash_it_pair> &hashitlist | |
26553 | = bucket_hash[bucket_ix]; | |
26554 | if (hashitlist.empty ()) | |
26555 | continue; | |
26556 | uint32_t &bucket_slot = m_bucket_table[bucket_ix]; | |
26557 | /* The hashes array is indexed starting at 1. */ | |
26558 | store_unsigned_integer (reinterpret_cast<gdb_byte *> (&bucket_slot), | |
26559 | sizeof (bucket_slot), m_dwarf5_byte_order, | |
26560 | m_hash_table.size () + 1); | |
26561 | for (const hash_it_pair &hashitpair : hashitlist) | |
26562 | { | |
26563 | m_hash_table.push_back (0); | |
26564 | store_unsigned_integer (reinterpret_cast<gdb_byte *> | |
26565 | (&m_hash_table.back ()), | |
26566 | sizeof (m_hash_table.back ()), | |
26567 | m_dwarf5_byte_order, hashitpair.hash); | |
26568 | const c_str_view &name = hashitpair.it->first; | |
26569 | const std::set<symbol_value> &value_set = hashitpair.it->second; | |
26570 | m_name_table_string_offs.push_back_reorder | |
26571 | (m_debugstrlookup.lookup (name.c_str ())); | |
26572 | m_name_table_entry_offs.push_back_reorder (m_entry_pool.size ()); | |
26573 | gdb_assert (!value_set.empty ()); | |
26574 | for (const symbol_value &value : value_set) | |
26575 | { | |
26576 | int &idx = m_indexkey_to_idx[index_key (value.dwarf_tag, | |
8af5c486 JK |
26577 | value.is_static, |
26578 | value.kind)]; | |
437afbb8 JK |
26579 | if (idx == 0) |
26580 | { | |
26581 | idx = m_idx_next++; | |
26582 | m_abbrev_table.append_unsigned_leb128 (idx); | |
26583 | m_abbrev_table.append_unsigned_leb128 (value.dwarf_tag); | |
8af5c486 JK |
26584 | m_abbrev_table.append_unsigned_leb128 |
26585 | (value.kind == unit_kind::cu ? DW_IDX_compile_unit | |
26586 | : DW_IDX_type_unit); | |
437afbb8 JK |
26587 | m_abbrev_table.append_unsigned_leb128 (DW_FORM_udata); |
26588 | m_abbrev_table.append_unsigned_leb128 (value.is_static | |
26589 | ? DW_IDX_GNU_internal | |
26590 | : DW_IDX_GNU_external); | |
26591 | m_abbrev_table.append_unsigned_leb128 (DW_FORM_flag_present); | |
26592 | ||
26593 | /* Terminate attributes list. */ | |
26594 | m_abbrev_table.append_unsigned_leb128 (0); | |
26595 | m_abbrev_table.append_unsigned_leb128 (0); | |
26596 | } | |
9291a0cd | 26597 | |
437afbb8 JK |
26598 | m_entry_pool.append_unsigned_leb128 (idx); |
26599 | m_entry_pool.append_unsigned_leb128 (value.cu_index); | |
26600 | } | |
9291a0cd | 26601 | |
437afbb8 JK |
26602 | /* Terminate the list of CUs. */ |
26603 | m_entry_pool.append_unsigned_leb128 (0); | |
26604 | } | |
26605 | } | |
26606 | gdb_assert (m_hash_table.size () == name_count); | |
987d643c | 26607 | |
437afbb8 JK |
26608 | /* Terminate tags list. */ |
26609 | m_abbrev_table.append_unsigned_leb128 (0); | |
26610 | } | |
0a5429f6 | 26611 | |
437afbb8 JK |
26612 | /* Return .debug_names bucket count. This must be called only after |
26613 | calling the build method. */ | |
26614 | uint32_t bucket_count () const | |
26615 | { | |
26616 | /* Verify the build method has been already called. */ | |
26617 | gdb_assert (!m_abbrev_table.empty ()); | |
26618 | const uint32_t retval = m_bucket_table.size (); | |
26619 | ||
26620 | /* Check for overflow. */ | |
26621 | gdb_assert (retval == m_bucket_table.size ()); | |
26622 | return retval; | |
26623 | } | |
26624 | ||
26625 | /* Return .debug_names names count. This must be called only after | |
26626 | calling the build method. */ | |
26627 | uint32_t name_count () const | |
26628 | { | |
26629 | /* Verify the build method has been already called. */ | |
26630 | gdb_assert (!m_abbrev_table.empty ()); | |
26631 | const uint32_t retval = m_hash_table.size (); | |
26632 | ||
26633 | /* Check for overflow. */ | |
26634 | gdb_assert (retval == m_hash_table.size ()); | |
26635 | return retval; | |
26636 | } | |
26637 | ||
26638 | /* Return number of bytes of .debug_names abbreviation table. This | |
26639 | must be called only after calling the build method. */ | |
26640 | uint32_t abbrev_table_bytes () const | |
26641 | { | |
26642 | gdb_assert (!m_abbrev_table.empty ()); | |
26643 | return m_abbrev_table.size (); | |
26644 | } | |
26645 | ||
26646 | /* Recurse into all "included" dependencies and store their symbols | |
26647 | as if they appeared in this psymtab. */ | |
26648 | void recursively_write_psymbols | |
26649 | (struct objfile *objfile, | |
26650 | struct partial_symtab *psymtab, | |
26651 | std::unordered_set<partial_symbol *> &psyms_seen, | |
26652 | int cu_index) | |
26653 | { | |
26654 | for (int i = 0; i < psymtab->number_of_dependencies; ++i) | |
26655 | if (psymtab->dependencies[i]->user != NULL) | |
26656 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
26657 | psyms_seen, cu_index); | |
26658 | ||
26659 | write_psymbols (psyms_seen, | |
26660 | &objfile->global_psymbols[psymtab->globals_offset], | |
8af5c486 | 26661 | psymtab->n_global_syms, cu_index, false, unit_kind::cu); |
437afbb8 JK |
26662 | write_psymbols (psyms_seen, |
26663 | &objfile->static_psymbols[psymtab->statics_offset], | |
8af5c486 | 26664 | psymtab->n_static_syms, cu_index, true, unit_kind::cu); |
437afbb8 JK |
26665 | } |
26666 | ||
26667 | /* Return number of bytes the .debug_names section will have. This | |
26668 | must be called only after calling the build method. */ | |
26669 | size_t bytes () const | |
26670 | { | |
26671 | /* Verify the build method has been already called. */ | |
26672 | gdb_assert (!m_abbrev_table.empty ()); | |
26673 | size_t expected_bytes = 0; | |
26674 | expected_bytes += m_bucket_table.size () * sizeof (m_bucket_table[0]); | |
26675 | expected_bytes += m_hash_table.size () * sizeof (m_hash_table[0]); | |
26676 | expected_bytes += m_name_table_string_offs.bytes (); | |
26677 | expected_bytes += m_name_table_entry_offs.bytes (); | |
26678 | expected_bytes += m_abbrev_table.size (); | |
26679 | expected_bytes += m_entry_pool.size (); | |
26680 | return expected_bytes; | |
26681 | } | |
26682 | ||
26683 | /* Write .debug_names to FILE_NAMES and .debug_str addition to | |
26684 | FILE_STR. This must be called only after calling the build | |
26685 | method. */ | |
26686 | void file_write (FILE *file_names, FILE *file_str) const | |
26687 | { | |
26688 | /* Verify the build method has been already called. */ | |
26689 | gdb_assert (!m_abbrev_table.empty ()); | |
26690 | ::file_write (file_names, m_bucket_table); | |
26691 | ::file_write (file_names, m_hash_table); | |
26692 | m_name_table_string_offs.file_write (file_names); | |
26693 | m_name_table_entry_offs.file_write (file_names); | |
26694 | m_abbrev_table.file_write (file_names); | |
26695 | m_entry_pool.file_write (file_names); | |
26696 | m_debugstrlookup.file_write (file_str); | |
26697 | } | |
26698 | ||
8af5c486 JK |
26699 | /* A helper user data for write_one_signatured_type. */ |
26700 | class write_one_signatured_type_data | |
26701 | { | |
26702 | public: | |
26703 | write_one_signatured_type_data (debug_names &nametable_, | |
26704 | signatured_type_index_data &&info_) | |
26705 | : nametable (nametable_), info (std::move (info_)) | |
26706 | {} | |
26707 | debug_names &nametable; | |
26708 | struct signatured_type_index_data info; | |
26709 | }; | |
26710 | ||
26711 | /* A helper function to pass write_one_signatured_type to | |
26712 | htab_traverse_noresize. */ | |
26713 | static int | |
26714 | write_one_signatured_type (void **slot, void *d) | |
26715 | { | |
26716 | write_one_signatured_type_data *data = (write_one_signatured_type_data *) d; | |
26717 | struct signatured_type_index_data *info = &data->info; | |
26718 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
26719 | ||
26720 | data->nametable.write_one_signatured_type (entry, info); | |
26721 | ||
26722 | return 1; | |
26723 | } | |
26724 | ||
437afbb8 JK |
26725 | private: |
26726 | ||
26727 | /* Storage for symbol names mapping them to their .debug_str section | |
26728 | offsets. */ | |
26729 | class debug_str_lookup | |
26730 | { | |
26731 | public: | |
26732 | ||
26733 | /* Object costructor to be called for current DWARF2_PER_OBJFILE. | |
26734 | All .debug_str section strings are automatically stored. */ | |
ed2dc618 SM |
26735 | debug_str_lookup (struct dwarf2_per_objfile *dwarf2_per_objfile) |
26736 | : m_abfd (dwarf2_per_objfile->objfile->obfd), | |
26737 | m_dwarf2_per_objfile (dwarf2_per_objfile) | |
437afbb8 JK |
26738 | { |
26739 | dwarf2_read_section (dwarf2_per_objfile->objfile, | |
26740 | &dwarf2_per_objfile->str); | |
26741 | if (dwarf2_per_objfile->str.buffer == NULL) | |
26742 | return; | |
26743 | for (const gdb_byte *data = dwarf2_per_objfile->str.buffer; | |
26744 | data < (dwarf2_per_objfile->str.buffer | |
26745 | + dwarf2_per_objfile->str.size);) | |
26746 | { | |
26747 | const char *const s = reinterpret_cast<const char *> (data); | |
26748 | const auto insertpair | |
26749 | = m_str_table.emplace (c_str_view (s), | |
26750 | data - dwarf2_per_objfile->str.buffer); | |
26751 | if (!insertpair.second) | |
26752 | complaint (&symfile_complaints, | |
26753 | _("Duplicate string \"%s\" in " | |
26754 | ".debug_str section [in module %s]"), | |
26755 | s, bfd_get_filename (m_abfd)); | |
26756 | data += strlen (s) + 1; | |
26757 | } | |
26758 | } | |
26759 | ||
26760 | /* Return offset of symbol name S in the .debug_str section. Add | |
26761 | such symbol to the section's end if it does not exist there | |
26762 | yet. */ | |
26763 | size_t lookup (const char *s) | |
26764 | { | |
26765 | const auto it = m_str_table.find (c_str_view (s)); | |
26766 | if (it != m_str_table.end ()) | |
26767 | return it->second; | |
ed2dc618 | 26768 | const size_t offset = (m_dwarf2_per_objfile->str.size |
437afbb8 JK |
26769 | + m_str_add_buf.size ()); |
26770 | m_str_table.emplace (c_str_view (s), offset); | |
26771 | m_str_add_buf.append_cstr0 (s); | |
26772 | return offset; | |
26773 | } | |
26774 | ||
26775 | /* Append the end of the .debug_str section to FILE. */ | |
26776 | void file_write (FILE *file) const | |
26777 | { | |
26778 | m_str_add_buf.file_write (file); | |
26779 | } | |
26780 | ||
26781 | private: | |
26782 | std::unordered_map<c_str_view, size_t, c_str_view_hasher> m_str_table; | |
26783 | bfd *const m_abfd; | |
ed2dc618 | 26784 | struct dwarf2_per_objfile *m_dwarf2_per_objfile; |
437afbb8 JK |
26785 | |
26786 | /* Data to add at the end of .debug_str for new needed symbol names. */ | |
26787 | data_buf m_str_add_buf; | |
26788 | }; | |
26789 | ||
26790 | /* Container to map used DWARF tags to their .debug_names abbreviation | |
26791 | tags. */ | |
26792 | class index_key | |
26793 | { | |
26794 | public: | |
8af5c486 JK |
26795 | index_key (int dwarf_tag_, bool is_static_, unit_kind kind_) |
26796 | : dwarf_tag (dwarf_tag_), is_static (is_static_), kind (kind_) | |
437afbb8 JK |
26797 | { |
26798 | } | |
26799 | ||
26800 | bool | |
26801 | operator== (const index_key &other) const | |
26802 | { | |
8af5c486 JK |
26803 | return (dwarf_tag == other.dwarf_tag && is_static == other.is_static |
26804 | && kind == other.kind); | |
437afbb8 JK |
26805 | } |
26806 | ||
26807 | const int dwarf_tag; | |
26808 | const bool is_static; | |
8af5c486 | 26809 | const unit_kind kind; |
437afbb8 JK |
26810 | }; |
26811 | ||
26812 | /* Provide std::unordered_map::hasher for index_key. */ | |
26813 | class index_key_hasher | |
26814 | { | |
26815 | public: | |
26816 | size_t | |
26817 | operator () (const index_key &key) const | |
26818 | { | |
26819 | return (std::hash<int>() (key.dwarf_tag) << 1) | key.is_static; | |
26820 | } | |
26821 | }; | |
26822 | ||
26823 | /* Parameters of one symbol entry. */ | |
26824 | class symbol_value | |
26825 | { | |
26826 | public: | |
26827 | const int dwarf_tag, cu_index; | |
26828 | const bool is_static; | |
8af5c486 | 26829 | const unit_kind kind; |
437afbb8 | 26830 | |
8af5c486 JK |
26831 | symbol_value (int dwarf_tag_, int cu_index_, bool is_static_, |
26832 | unit_kind kind_) | |
26833 | : dwarf_tag (dwarf_tag_), cu_index (cu_index_), is_static (is_static_), | |
26834 | kind (kind_) | |
437afbb8 JK |
26835 | {} |
26836 | ||
26837 | bool | |
26838 | operator< (const symbol_value &other) const | |
26839 | { | |
26840 | #define X(n) \ | |
26841 | do \ | |
26842 | { \ | |
26843 | if (n < other.n) \ | |
26844 | return true; \ | |
26845 | if (n > other.n) \ | |
26846 | return false; \ | |
26847 | } \ | |
26848 | while (0) | |
26849 | X (dwarf_tag); | |
26850 | X (is_static); | |
8af5c486 | 26851 | X (kind); |
437afbb8 JK |
26852 | X (cu_index); |
26853 | #undef X | |
26854 | return false; | |
26855 | } | |
26856 | }; | |
26857 | ||
26858 | /* Abstract base class to unify DWARF-32 and DWARF-64 name table | |
26859 | output. */ | |
26860 | class offset_vec | |
26861 | { | |
26862 | protected: | |
26863 | const bfd_endian dwarf5_byte_order; | |
26864 | public: | |
26865 | explicit offset_vec (bfd_endian dwarf5_byte_order_) | |
26866 | : dwarf5_byte_order (dwarf5_byte_order_) | |
26867 | {} | |
26868 | ||
26869 | /* Call std::vector::reserve for NELEM elements. */ | |
26870 | virtual void reserve (size_t nelem) = 0; | |
26871 | ||
26872 | /* Call std::vector::push_back with store_unsigned_integer byte | |
26873 | reordering for ELEM. */ | |
26874 | virtual void push_back_reorder (size_t elem) = 0; | |
26875 | ||
26876 | /* Return expected output size in bytes. */ | |
26877 | virtual size_t bytes () const = 0; | |
26878 | ||
26879 | /* Write name table to FILE. */ | |
26880 | virtual void file_write (FILE *file) const = 0; | |
26881 | }; | |
26882 | ||
26883 | /* Template to unify DWARF-32 and DWARF-64 output. */ | |
26884 | template<typename OffsetSize> | |
26885 | class offset_vec_tmpl : public offset_vec | |
26886 | { | |
26887 | public: | |
26888 | explicit offset_vec_tmpl (bfd_endian dwarf5_byte_order_) | |
26889 | : offset_vec (dwarf5_byte_order_) | |
26890 | {} | |
26891 | ||
26892 | /* Implement offset_vec::reserve. */ | |
26893 | void reserve (size_t nelem) override | |
26894 | { | |
26895 | m_vec.reserve (nelem); | |
26896 | } | |
26897 | ||
26898 | /* Implement offset_vec::push_back_reorder. */ | |
26899 | void push_back_reorder (size_t elem) override | |
26900 | { | |
26901 | m_vec.push_back (elem); | |
26902 | /* Check for overflow. */ | |
26903 | gdb_assert (m_vec.back () == elem); | |
26904 | store_unsigned_integer (reinterpret_cast<gdb_byte *> (&m_vec.back ()), | |
26905 | sizeof (m_vec.back ()), dwarf5_byte_order, elem); | |
26906 | } | |
26907 | ||
26908 | /* Implement offset_vec::bytes. */ | |
26909 | size_t bytes () const override | |
26910 | { | |
26911 | return m_vec.size () * sizeof (m_vec[0]); | |
26912 | } | |
26913 | ||
26914 | /* Implement offset_vec::file_write. */ | |
26915 | void file_write (FILE *file) const override | |
26916 | { | |
26917 | ::file_write (file, m_vec); | |
26918 | } | |
26919 | ||
26920 | private: | |
26921 | std::vector<OffsetSize> m_vec; | |
26922 | }; | |
26923 | ||
26924 | /* Base class to unify DWARF-32 and DWARF-64 .debug_names output | |
26925 | respecting name table width. */ | |
26926 | class dwarf | |
26927 | { | |
26928 | public: | |
26929 | offset_vec &name_table_string_offs, &name_table_entry_offs; | |
26930 | ||
26931 | dwarf (offset_vec &name_table_string_offs_, | |
26932 | offset_vec &name_table_entry_offs_) | |
26933 | : name_table_string_offs (name_table_string_offs_), | |
26934 | name_table_entry_offs (name_table_entry_offs_) | |
26935 | { | |
26936 | } | |
26937 | }; | |
e8f8bcb3 | 26938 | |
437afbb8 JK |
26939 | /* Template to unify DWARF-32 and DWARF-64 .debug_names output |
26940 | respecting name table width. */ | |
26941 | template<typename OffsetSize> | |
26942 | class dwarf_tmpl : public dwarf | |
26943 | { | |
26944 | public: | |
26945 | explicit dwarf_tmpl (bfd_endian dwarf5_byte_order_) | |
26946 | : dwarf (m_name_table_string_offs, m_name_table_entry_offs), | |
26947 | m_name_table_string_offs (dwarf5_byte_order_), | |
26948 | m_name_table_entry_offs (dwarf5_byte_order_) | |
26949 | {} | |
26950 | ||
26951 | private: | |
26952 | offset_vec_tmpl<OffsetSize> m_name_table_string_offs; | |
26953 | offset_vec_tmpl<OffsetSize> m_name_table_entry_offs; | |
26954 | }; | |
26955 | ||
26956 | /* Try to reconstruct original DWARF tag for given partial_symbol. | |
26957 | This function is not DWARF-5 compliant but it is sufficient for | |
26958 | GDB as a DWARF-5 index consumer. */ | |
26959 | static int psymbol_tag (const struct partial_symbol *psym) | |
26960 | { | |
26961 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
26962 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
26963 | ||
26964 | switch (domain) | |
26965 | { | |
26966 | case VAR_DOMAIN: | |
26967 | switch (aclass) | |
26968 | { | |
26969 | case LOC_BLOCK: | |
26970 | return DW_TAG_subprogram; | |
26971 | case LOC_TYPEDEF: | |
26972 | return DW_TAG_typedef; | |
26973 | case LOC_COMPUTED: | |
26974 | case LOC_CONST_BYTES: | |
26975 | case LOC_OPTIMIZED_OUT: | |
26976 | case LOC_STATIC: | |
26977 | return DW_TAG_variable; | |
26978 | case LOC_CONST: | |
26979 | /* Note: It's currently impossible to recognize psyms as enum values | |
26980 | short of reading the type info. For now punt. */ | |
26981 | return DW_TAG_variable; | |
26982 | default: | |
26983 | /* There are other LOC_FOO values that one might want to classify | |
26984 | as variables, but dwarf2read.c doesn't currently use them. */ | |
26985 | return DW_TAG_variable; | |
26986 | } | |
26987 | case STRUCT_DOMAIN: | |
26988 | return DW_TAG_structure_type; | |
26989 | default: | |
26990 | return 0; | |
26991 | } | |
26992 | } | |
26993 | ||
26994 | /* Call insert for all partial symbols and mark them in PSYMS_SEEN. */ | |
26995 | void write_psymbols (std::unordered_set<partial_symbol *> &psyms_seen, | |
26996 | struct partial_symbol **psymp, int count, int cu_index, | |
8af5c486 | 26997 | bool is_static, unit_kind kind) |
437afbb8 JK |
26998 | { |
26999 | for (; count-- > 0; ++psymp) | |
27000 | { | |
27001 | struct partial_symbol *psym = *psymp; | |
27002 | ||
27003 | if (SYMBOL_LANGUAGE (psym) == language_ada) | |
27004 | error (_("Ada is not currently supported by the index")); | |
27005 | ||
27006 | /* Only add a given psymbol once. */ | |
27007 | if (psyms_seen.insert (psym).second) | |
8af5c486 | 27008 | insert (psym, cu_index, is_static, kind); |
437afbb8 JK |
27009 | } |
27010 | } | |
27011 | ||
8af5c486 JK |
27012 | /* A helper function that writes a single signatured_type |
27013 | to a debug_names. */ | |
27014 | void | |
27015 | write_one_signatured_type (struct signatured_type *entry, | |
27016 | struct signatured_type_index_data *info) | |
27017 | { | |
27018 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; | |
27019 | ||
27020 | write_psymbols (info->psyms_seen, | |
27021 | &info->objfile->global_psymbols[psymtab->globals_offset], | |
27022 | psymtab->n_global_syms, info->cu_index, false, | |
27023 | unit_kind::tu); | |
27024 | write_psymbols (info->psyms_seen, | |
27025 | &info->objfile->static_psymbols[psymtab->statics_offset], | |
27026 | psymtab->n_static_syms, info->cu_index, true, | |
27027 | unit_kind::tu); | |
27028 | ||
27029 | info->types_list.append_uint (dwarf5_offset_size (), m_dwarf5_byte_order, | |
27030 | to_underlying (entry->per_cu.sect_off)); | |
27031 | ||
27032 | ++info->cu_index; | |
27033 | } | |
27034 | ||
437afbb8 JK |
27035 | /* Store value of each symbol. */ |
27036 | std::unordered_map<c_str_view, std::set<symbol_value>, c_str_view_hasher> | |
27037 | m_name_to_value_set; | |
27038 | ||
27039 | /* Tables of DWARF-5 .debug_names. They are in object file byte | |
27040 | order. */ | |
27041 | std::vector<uint32_t> m_bucket_table; | |
27042 | std::vector<uint32_t> m_hash_table; | |
27043 | ||
27044 | const bfd_endian m_dwarf5_byte_order; | |
27045 | dwarf_tmpl<uint32_t> m_dwarf32; | |
27046 | dwarf_tmpl<uint64_t> m_dwarf64; | |
27047 | dwarf &m_dwarf; | |
27048 | offset_vec &m_name_table_string_offs, &m_name_table_entry_offs; | |
27049 | debug_str_lookup m_debugstrlookup; | |
27050 | ||
27051 | /* Map each used .debug_names abbreviation tag parameter to its | |
27052 | index value. */ | |
27053 | std::unordered_map<index_key, int, index_key_hasher> m_indexkey_to_idx; | |
27054 | ||
27055 | /* Next unused .debug_names abbreviation tag for | |
27056 | m_indexkey_to_idx. */ | |
27057 | int m_idx_next = 1; | |
27058 | ||
27059 | /* .debug_names abbreviation table. */ | |
27060 | data_buf m_abbrev_table; | |
27061 | ||
27062 | /* .debug_names entry pool. */ | |
27063 | data_buf m_entry_pool; | |
27064 | }; | |
27065 | ||
27066 | /* Return iff any of the needed offsets does not fit into 32-bit | |
27067 | .debug_names section. */ | |
27068 | ||
27069 | static bool | |
ed2dc618 | 27070 | check_dwarf64_offsets (struct dwarf2_per_objfile *dwarf2_per_objfile) |
437afbb8 JK |
27071 | { |
27072 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
27073 | { | |
27074 | const dwarf2_per_cu_data &per_cu = *dwarf2_per_objfile->all_comp_units[i]; | |
27075 | ||
27076 | if (to_underlying (per_cu.sect_off) >= (static_cast<uint64_t> (1) << 32)) | |
27077 | return true; | |
27078 | } | |
27079 | for (int i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
27080 | { | |
27081 | const signatured_type &sigtype = *dwarf2_per_objfile->all_type_units[i]; | |
27082 | const dwarf2_per_cu_data &per_cu = sigtype.per_cu; | |
27083 | ||
27084 | if (to_underlying (per_cu.sect_off) >= (static_cast<uint64_t> (1) << 32)) | |
27085 | return true; | |
27086 | } | |
27087 | return false; | |
27088 | } | |
27089 | ||
27090 | /* The psyms_seen set is potentially going to be largish (~40k | |
27091 | elements when indexing a -g3 build of GDB itself). Estimate the | |
27092 | number of elements in order to avoid too many rehashes, which | |
27093 | require rebuilding buckets and thus many trips to | |
27094 | malloc/free. */ | |
27095 | ||
27096 | static size_t | |
ed2dc618 | 27097 | psyms_seen_size (struct dwarf2_per_objfile *dwarf2_per_objfile) |
437afbb8 | 27098 | { |
e8f8bcb3 PA |
27099 | size_t psyms_count = 0; |
27100 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
27101 | { | |
27102 | struct dwarf2_per_cu_data *per_cu | |
27103 | = dwarf2_per_objfile->all_comp_units[i]; | |
27104 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
27105 | ||
27106 | if (psymtab != NULL && psymtab->user == NULL) | |
27107 | recursively_count_psymbols (psymtab, psyms_count); | |
27108 | } | |
27109 | /* Generating an index for gdb itself shows a ratio of | |
27110 | TOTAL_SEEN_SYMS/UNIQUE_SYMS or ~5. 4 seems like a good bet. */ | |
437afbb8 JK |
27111 | return psyms_count / 4; |
27112 | } | |
27113 | ||
27114 | /* Write new .gdb_index section for OBJFILE into OUT_FILE. | |
27115 | Return how many bytes were expected to be written into OUT_FILE. */ | |
27116 | ||
27117 | static size_t | |
ed2dc618 | 27118 | write_gdbindex (struct dwarf2_per_objfile *dwarf2_per_objfile, FILE *out_file) |
437afbb8 | 27119 | { |
ed2dc618 | 27120 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
437afbb8 JK |
27121 | mapped_symtab symtab; |
27122 | data_buf cu_list; | |
27123 | ||
27124 | /* While we're scanning CU's create a table that maps a psymtab pointer | |
27125 | (which is what addrmap records) to its index (which is what is recorded | |
27126 | in the index file). This will later be needed to write the address | |
27127 | table. */ | |
27128 | psym_index_map cu_index_htab; | |
27129 | cu_index_htab.reserve (dwarf2_per_objfile->n_comp_units); | |
27130 | ||
27131 | /* The CU list is already sorted, so we don't need to do additional | |
27132 | work here. Also, the debug_types entries do not appear in | |
27133 | all_comp_units, but only in their own hash table. */ | |
27134 | ||
ed2dc618 SM |
27135 | std::unordered_set<partial_symbol *> psyms_seen |
27136 | (psyms_seen_size (dwarf2_per_objfile)); | |
bc8f2430 | 27137 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd | 27138 | { |
3e43a32a MS |
27139 | struct dwarf2_per_cu_data *per_cu |
27140 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 27141 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 27142 | |
92fac807 JK |
27143 | /* CU of a shared file from 'dwz -m' may be unused by this main file. |
27144 | It may be referenced from a local scope but in such case it does not | |
27145 | need to be present in .gdb_index. */ | |
27146 | if (psymtab == NULL) | |
27147 | continue; | |
27148 | ||
95554aad | 27149 | if (psymtab->user == NULL) |
bc8f2430 JK |
27150 | recursively_write_psymbols (objfile, psymtab, &symtab, |
27151 | psyms_seen, i); | |
9291a0cd | 27152 | |
bc8f2430 JK |
27153 | const auto insertpair = cu_index_htab.emplace (psymtab, i); |
27154 | gdb_assert (insertpair.second); | |
9291a0cd | 27155 | |
c2f134ac PA |
27156 | cu_list.append_uint (8, BFD_ENDIAN_LITTLE, |
27157 | to_underlying (per_cu->sect_off)); | |
27158 | cu_list.append_uint (8, BFD_ENDIAN_LITTLE, per_cu->length); | |
9291a0cd TT |
27159 | } |
27160 | ||
0a5429f6 | 27161 | /* Dump the address map. */ |
bc8f2430 JK |
27162 | data_buf addr_vec; |
27163 | write_address_map (objfile, addr_vec, cu_index_htab); | |
0a5429f6 | 27164 | |
1fd400ff | 27165 | /* Write out the .debug_type entries, if any. */ |
bc8f2430 | 27166 | data_buf types_cu_list; |
1fd400ff TT |
27167 | if (dwarf2_per_objfile->signatured_types) |
27168 | { | |
bc8f2430 JK |
27169 | signatured_type_index_data sig_data (types_cu_list, |
27170 | psyms_seen); | |
1fd400ff TT |
27171 | |
27172 | sig_data.objfile = objfile; | |
bc8f2430 | 27173 | sig_data.symtab = &symtab; |
1fd400ff TT |
27174 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
27175 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
27176 | write_one_signatured_type, &sig_data); | |
27177 | } | |
27178 | ||
156942c7 DE |
27179 | /* Now that we've processed all symbols we can shrink their cu_indices |
27180 | lists. */ | |
bc8f2430 | 27181 | uniquify_cu_indices (&symtab); |
156942c7 | 27182 | |
bc8f2430 JK |
27183 | data_buf symtab_vec, constant_pool; |
27184 | write_hash_table (&symtab, symtab_vec, constant_pool); | |
9291a0cd | 27185 | |
bc8f2430 JK |
27186 | data_buf contents; |
27187 | const offset_type size_of_contents = 6 * sizeof (offset_type); | |
27188 | offset_type total_len = size_of_contents; | |
9291a0cd TT |
27189 | |
27190 | /* The version number. */ | |
bc8f2430 | 27191 | contents.append_data (MAYBE_SWAP (8)); |
9291a0cd TT |
27192 | |
27193 | /* The offset of the CU list from the start of the file. */ | |
bc8f2430 JK |
27194 | contents.append_data (MAYBE_SWAP (total_len)); |
27195 | total_len += cu_list.size (); | |
9291a0cd | 27196 | |
1fd400ff | 27197 | /* The offset of the types CU list from the start of the file. */ |
bc8f2430 JK |
27198 | contents.append_data (MAYBE_SWAP (total_len)); |
27199 | total_len += types_cu_list.size (); | |
1fd400ff | 27200 | |
9291a0cd | 27201 | /* The offset of the address table from the start of the file. */ |
bc8f2430 JK |
27202 | contents.append_data (MAYBE_SWAP (total_len)); |
27203 | total_len += addr_vec.size (); | |
9291a0cd TT |
27204 | |
27205 | /* The offset of the symbol table from the start of the file. */ | |
bc8f2430 JK |
27206 | contents.append_data (MAYBE_SWAP (total_len)); |
27207 | total_len += symtab_vec.size (); | |
9291a0cd TT |
27208 | |
27209 | /* The offset of the constant pool from the start of the file. */ | |
bc8f2430 JK |
27210 | contents.append_data (MAYBE_SWAP (total_len)); |
27211 | total_len += constant_pool.size (); | |
9291a0cd | 27212 | |
bc8f2430 | 27213 | gdb_assert (contents.size () == size_of_contents); |
9291a0cd | 27214 | |
bc8f2430 JK |
27215 | contents.file_write (out_file); |
27216 | cu_list.file_write (out_file); | |
27217 | types_cu_list.file_write (out_file); | |
27218 | addr_vec.file_write (out_file); | |
27219 | symtab_vec.file_write (out_file); | |
27220 | constant_pool.file_write (out_file); | |
9291a0cd | 27221 | |
437afbb8 JK |
27222 | return total_len; |
27223 | } | |
27224 | ||
27225 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
27226 | static const gdb_byte dwarf5_gdb_augmentation[] = { 'G', 'D', 'B', 0 }; | |
27227 | ||
27228 | /* Write a new .debug_names section for OBJFILE into OUT_FILE, write | |
27229 | needed addition to .debug_str section to OUT_FILE_STR. Return how | |
27230 | many bytes were expected to be written into OUT_FILE. */ | |
27231 | ||
27232 | static size_t | |
ed2dc618 SM |
27233 | write_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
27234 | FILE *out_file, FILE *out_file_str) | |
437afbb8 | 27235 | { |
ed2dc618 SM |
27236 | const bool dwarf5_is_dwarf64 = check_dwarf64_offsets (dwarf2_per_objfile); |
27237 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
437afbb8 JK |
27238 | const enum bfd_endian dwarf5_byte_order |
27239 | = gdbarch_byte_order (get_objfile_arch (objfile)); | |
27240 | ||
27241 | /* The CU list is already sorted, so we don't need to do additional | |
27242 | work here. Also, the debug_types entries do not appear in | |
27243 | all_comp_units, but only in their own hash table. */ | |
27244 | data_buf cu_list; | |
ed2dc618 SM |
27245 | debug_names nametable (dwarf2_per_objfile, dwarf5_is_dwarf64, |
27246 | dwarf5_byte_order); | |
27247 | std::unordered_set<partial_symbol *> | |
27248 | psyms_seen (psyms_seen_size (dwarf2_per_objfile)); | |
437afbb8 JK |
27249 | for (int i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
27250 | { | |
27251 | const dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->all_comp_units[i]; | |
27252 | partial_symtab *psymtab = per_cu->v.psymtab; | |
27253 | ||
27254 | /* CU of a shared file from 'dwz -m' may be unused by this main | |
27255 | file. It may be referenced from a local scope but in such | |
27256 | case it does not need to be present in .debug_names. */ | |
27257 | if (psymtab == NULL) | |
27258 | continue; | |
27259 | ||
27260 | if (psymtab->user == NULL) | |
27261 | nametable.recursively_write_psymbols (objfile, psymtab, psyms_seen, i); | |
27262 | ||
8af5c486 | 27263 | cu_list.append_uint (nametable.dwarf5_offset_size (), dwarf5_byte_order, |
437afbb8 JK |
27264 | to_underlying (per_cu->sect_off)); |
27265 | } | |
437afbb8 | 27266 | |
8af5c486 | 27267 | /* Write out the .debug_type entries, if any. */ |
437afbb8 | 27268 | data_buf types_cu_list; |
8af5c486 | 27269 | if (dwarf2_per_objfile->signatured_types) |
437afbb8 | 27270 | { |
8af5c486 JK |
27271 | debug_names::write_one_signatured_type_data sig_data (nametable, |
27272 | signatured_type_index_data (types_cu_list, psyms_seen)); | |
437afbb8 | 27273 | |
8af5c486 JK |
27274 | sig_data.info.objfile = objfile; |
27275 | /* It is used only for gdb_index. */ | |
27276 | sig_data.info.symtab = nullptr; | |
27277 | sig_data.info.cu_index = 0; | |
27278 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
27279 | debug_names::write_one_signatured_type, | |
27280 | &sig_data); | |
437afbb8 JK |
27281 | } |
27282 | ||
8af5c486 JK |
27283 | nametable.build (); |
27284 | ||
27285 | /* No addr_vec - DWARF-5 uses .debug_aranges generated by GCC. */ | |
27286 | ||
437afbb8 JK |
27287 | const offset_type bytes_of_header |
27288 | = ((dwarf5_is_dwarf64 ? 12 : 4) | |
27289 | + 2 + 2 + 7 * 4 | |
27290 | + sizeof (dwarf5_gdb_augmentation)); | |
27291 | size_t expected_bytes = 0; | |
27292 | expected_bytes += bytes_of_header; | |
27293 | expected_bytes += cu_list.size (); | |
27294 | expected_bytes += types_cu_list.size (); | |
27295 | expected_bytes += nametable.bytes (); | |
27296 | data_buf header; | |
27297 | ||
27298 | if (!dwarf5_is_dwarf64) | |
27299 | { | |
27300 | const uint64_t size64 = expected_bytes - 4; | |
27301 | gdb_assert (size64 < 0xfffffff0); | |
27302 | header.append_uint (4, dwarf5_byte_order, size64); | |
27303 | } | |
27304 | else | |
27305 | { | |
27306 | header.append_uint (4, dwarf5_byte_order, 0xffffffff); | |
27307 | header.append_uint (8, dwarf5_byte_order, expected_bytes - 12); | |
27308 | } | |
27309 | ||
27310 | /* The version number. */ | |
27311 | header.append_uint (2, dwarf5_byte_order, 5); | |
27312 | ||
27313 | /* Padding. */ | |
27314 | header.append_uint (2, dwarf5_byte_order, 0); | |
27315 | ||
27316 | /* comp_unit_count - The number of CUs in the CU list. */ | |
27317 | header.append_uint (4, dwarf5_byte_order, dwarf2_per_objfile->n_comp_units); | |
27318 | ||
27319 | /* local_type_unit_count - The number of TUs in the local TU | |
27320 | list. */ | |
27321 | header.append_uint (4, dwarf5_byte_order, dwarf2_per_objfile->n_type_units); | |
27322 | ||
27323 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
27324 | list. */ | |
27325 | header.append_uint (4, dwarf5_byte_order, 0); | |
27326 | ||
27327 | /* bucket_count - The number of hash buckets in the hash lookup | |
27328 | table. */ | |
27329 | header.append_uint (4, dwarf5_byte_order, nametable.bucket_count ()); | |
27330 | ||
27331 | /* name_count - The number of unique names in the index. */ | |
27332 | header.append_uint (4, dwarf5_byte_order, nametable.name_count ()); | |
27333 | ||
27334 | /* abbrev_table_size - The size in bytes of the abbreviations | |
27335 | table. */ | |
27336 | header.append_uint (4, dwarf5_byte_order, nametable.abbrev_table_bytes ()); | |
27337 | ||
27338 | /* augmentation_string_size - The size in bytes of the augmentation | |
27339 | string. This value is rounded up to a multiple of 4. */ | |
27340 | static_assert (sizeof (dwarf5_gdb_augmentation) % 4 == 0, ""); | |
27341 | header.append_uint (4, dwarf5_byte_order, sizeof (dwarf5_gdb_augmentation)); | |
27342 | header.append_data (dwarf5_gdb_augmentation); | |
27343 | ||
27344 | gdb_assert (header.size () == bytes_of_header); | |
27345 | ||
27346 | header.file_write (out_file); | |
27347 | cu_list.file_write (out_file); | |
27348 | types_cu_list.file_write (out_file); | |
27349 | nametable.file_write (out_file, out_file_str); | |
27350 | ||
27351 | return expected_bytes; | |
27352 | } | |
27353 | ||
27354 | /* Assert that FILE's size is EXPECTED_SIZE. Assumes file's seek | |
27355 | position is at the end of the file. */ | |
27356 | ||
27357 | static void | |
27358 | assert_file_size (FILE *file, const char *filename, size_t expected_size) | |
27359 | { | |
27360 | const auto file_size = ftell (file); | |
27361 | if (file_size == -1) | |
27362 | error (_("Can't get `%s' size"), filename); | |
27363 | gdb_assert (file_size == expected_size); | |
27364 | } | |
27365 | ||
437afbb8 JK |
27366 | /* Create an index file for OBJFILE in the directory DIR. */ |
27367 | ||
27368 | static void | |
ed2dc618 SM |
27369 | write_psymtabs_to_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
27370 | const char *dir, | |
437afbb8 JK |
27371 | dw_index_kind index_kind) |
27372 | { | |
ed2dc618 SM |
27373 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
27374 | ||
437afbb8 JK |
27375 | if (dwarf2_per_objfile->using_index) |
27376 | error (_("Cannot use an index to create the index")); | |
27377 | ||
27378 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) | |
27379 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
27380 | ||
27381 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) | |
27382 | return; | |
27383 | ||
27384 | struct stat st; | |
27385 | if (stat (objfile_name (objfile), &st) < 0) | |
27386 | perror_with_name (objfile_name (objfile)); | |
27387 | ||
27388 | std::string filename (std::string (dir) + SLASH_STRING | |
27389 | + lbasename (objfile_name (objfile)) | |
27390 | + (index_kind == dw_index_kind::DEBUG_NAMES | |
27391 | ? INDEX5_SUFFIX : INDEX4_SUFFIX)); | |
27392 | ||
27393 | FILE *out_file = gdb_fopen_cloexec (filename.c_str (), "wb").release (); | |
27394 | if (!out_file) | |
27395 | error (_("Can't open `%s' for writing"), filename.c_str ()); | |
27396 | ||
27397 | /* Order matters here; we want FILE to be closed before FILENAME is | |
27398 | unlinked, because on MS-Windows one cannot delete a file that is | |
27399 | still open. (Don't call anything here that might throw until | |
27400 | file_closer is created.) */ | |
27401 | gdb::unlinker unlink_file (filename.c_str ()); | |
27402 | gdb_file_up close_out_file (out_file); | |
27403 | ||
27404 | if (index_kind == dw_index_kind::DEBUG_NAMES) | |
27405 | { | |
27406 | std::string filename_str (std::string (dir) + SLASH_STRING | |
27407 | + lbasename (objfile_name (objfile)) | |
27408 | + DEBUG_STR_SUFFIX); | |
27409 | FILE *out_file_str | |
27410 | = gdb_fopen_cloexec (filename_str.c_str (), "wb").release (); | |
27411 | if (!out_file_str) | |
27412 | error (_("Can't open `%s' for writing"), filename_str.c_str ()); | |
27413 | gdb::unlinker unlink_file_str (filename_str.c_str ()); | |
27414 | gdb_file_up close_out_file_str (out_file_str); | |
27415 | ||
27416 | const size_t total_len | |
ed2dc618 | 27417 | = write_debug_names (dwarf2_per_objfile, out_file, out_file_str); |
437afbb8 JK |
27418 | assert_file_size (out_file, filename.c_str (), total_len); |
27419 | ||
27420 | /* We want to keep the file .debug_str file too. */ | |
27421 | unlink_file_str.keep (); | |
27422 | } | |
27423 | else | |
27424 | { | |
27425 | const size_t total_len | |
ed2dc618 | 27426 | = write_gdbindex (dwarf2_per_objfile, out_file); |
437afbb8 JK |
27427 | assert_file_size (out_file, filename.c_str (), total_len); |
27428 | } | |
27429 | ||
bef155c3 TT |
27430 | /* We want to keep the file. */ |
27431 | unlink_file.keep (); | |
9291a0cd TT |
27432 | } |
27433 | ||
90476074 TT |
27434 | /* Implementation of the `save gdb-index' command. |
27435 | ||
437afbb8 JK |
27436 | Note that the .gdb_index file format used by this command is |
27437 | documented in the GDB manual. Any changes here must be documented | |
27438 | there. */ | |
11570e71 | 27439 | |
9291a0cd | 27440 | static void |
8384c356 | 27441 | save_gdb_index_command (const char *arg, int from_tty) |
9291a0cd TT |
27442 | { |
27443 | struct objfile *objfile; | |
437afbb8 JK |
27444 | const char dwarf5space[] = "-dwarf-5 "; |
27445 | dw_index_kind index_kind = dw_index_kind::GDB_INDEX; | |
27446 | ||
27447 | if (!arg) | |
27448 | arg = ""; | |
27449 | ||
27450 | arg = skip_spaces (arg); | |
27451 | if (strncmp (arg, dwarf5space, strlen (dwarf5space)) == 0) | |
27452 | { | |
27453 | index_kind = dw_index_kind::DEBUG_NAMES; | |
27454 | arg += strlen (dwarf5space); | |
27455 | arg = skip_spaces (arg); | |
27456 | } | |
9291a0cd | 27457 | |
437afbb8 JK |
27458 | if (!*arg) |
27459 | error (_("usage: save gdb-index [-dwarf-5] DIRECTORY")); | |
9291a0cd TT |
27460 | |
27461 | ALL_OBJFILES (objfile) | |
27462 | { | |
27463 | struct stat st; | |
27464 | ||
27465 | /* If the objfile does not correspond to an actual file, skip it. */ | |
4262abfb | 27466 | if (stat (objfile_name (objfile), &st) < 0) |
9291a0cd TT |
27467 | continue; |
27468 | ||
ed2dc618 SM |
27469 | struct dwarf2_per_objfile *dwarf2_per_objfile |
27470 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 27471 | |
ed2dc618 SM |
27472 | if (dwarf2_per_objfile != NULL) |
27473 | { | |
492d29ea | 27474 | TRY |
9291a0cd | 27475 | { |
ed2dc618 | 27476 | write_psymtabs_to_index (dwarf2_per_objfile, arg, index_kind); |
9291a0cd | 27477 | } |
492d29ea PA |
27478 | CATCH (except, RETURN_MASK_ERROR) |
27479 | { | |
27480 | exception_fprintf (gdb_stderr, except, | |
27481 | _("Error while writing index for `%s': "), | |
27482 | objfile_name (objfile)); | |
27483 | } | |
27484 | END_CATCH | |
9291a0cd | 27485 | } |
ed2dc618 | 27486 | |
9291a0cd | 27487 | } |
dce234bc PP |
27488 | } |
27489 | ||
9291a0cd TT |
27490 | \f |
27491 | ||
b4f54984 | 27492 | int dwarf_always_disassemble; |
9eae7c52 TT |
27493 | |
27494 | static void | |
b4f54984 DE |
27495 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
27496 | struct cmd_list_element *c, const char *value) | |
9eae7c52 | 27497 | { |
3e43a32a MS |
27498 | fprintf_filtered (file, |
27499 | _("Whether to always disassemble " | |
27500 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
27501 | value); |
27502 | } | |
27503 | ||
900e11f9 JK |
27504 | static void |
27505 | show_check_physname (struct ui_file *file, int from_tty, | |
27506 | struct cmd_list_element *c, const char *value) | |
27507 | { | |
27508 | fprintf_filtered (file, | |
27509 | _("Whether to check \"physname\" is %s.\n"), | |
27510 | value); | |
27511 | } | |
27512 | ||
6502dd73 DJ |
27513 | void |
27514 | _initialize_dwarf2_read (void) | |
27515 | { | |
96d19272 JK |
27516 | struct cmd_list_element *c; |
27517 | ||
fc8e7e75 | 27518 | dwarf2_objfile_data_key = register_objfile_data (); |
ae038cb0 | 27519 | |
b4f54984 DE |
27520 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
27521 | Set DWARF specific variables.\n\ | |
27522 | Configure DWARF variables such as the cache size"), | |
27523 | &set_dwarf_cmdlist, "maintenance set dwarf ", | |
ae038cb0 DJ |
27524 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
27525 | ||
b4f54984 DE |
27526 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
27527 | Show DWARF specific variables\n\ | |
27528 | Show DWARF variables such as the cache size"), | |
27529 | &show_dwarf_cmdlist, "maintenance show dwarf ", | |
ae038cb0 DJ |
27530 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
27531 | ||
27532 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
b4f54984 DE |
27533 | &dwarf_max_cache_age, _("\ |
27534 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
27535 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
7915a72c AC |
27536 | A higher limit means that cached compilation units will be stored\n\ |
27537 | in memory longer, and more total memory will be used. Zero disables\n\ | |
27538 | caching, which can slow down startup."), | |
2c5b56ce | 27539 | NULL, |
b4f54984 DE |
27540 | show_dwarf_max_cache_age, |
27541 | &set_dwarf_cmdlist, | |
27542 | &show_dwarf_cmdlist); | |
d97bc12b | 27543 | |
9eae7c52 | 27544 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
b4f54984 | 27545 | &dwarf_always_disassemble, _("\ |
9eae7c52 TT |
27546 | Set whether `info address' always disassembles DWARF expressions."), _("\ |
27547 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
27548 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
27549 | syntax. When disabled, expressions will be printed in a more\n\ | |
27550 | conversational style, when possible."), | |
27551 | NULL, | |
b4f54984 DE |
27552 | show_dwarf_always_disassemble, |
27553 | &set_dwarf_cmdlist, | |
27554 | &show_dwarf_cmdlist); | |
27555 | ||
27556 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ | |
27557 | Set debugging of the DWARF reader."), _("\ | |
27558 | Show debugging of the DWARF reader."), _("\ | |
27559 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
73be47f5 DE |
27560 | reading and symtab expansion. A value of 1 (one) provides basic\n\ |
27561 | information. A value greater than 1 provides more verbose information."), | |
45cfd468 DE |
27562 | NULL, |
27563 | NULL, | |
27564 | &setdebuglist, &showdebuglist); | |
27565 | ||
b4f54984 DE |
27566 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
27567 | Set debugging of the DWARF DIE reader."), _("\ | |
27568 | Show debugging of the DWARF DIE reader."), _("\ | |
d97bc12b DE |
27569 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ |
27570 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
27571 | NULL, |
27572 | NULL, | |
27573 | &setdebuglist, &showdebuglist); | |
9291a0cd | 27574 | |
27e0867f DE |
27575 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
27576 | Set debugging of the dwarf line reader."), _("\ | |
27577 | Show debugging of the dwarf line reader."), _("\ | |
27578 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
27579 | A value of 1 (one) provides basic information.\n\ | |
27580 | A value greater than 1 provides more verbose information."), | |
27581 | NULL, | |
27582 | NULL, | |
27583 | &setdebuglist, &showdebuglist); | |
27584 | ||
900e11f9 JK |
27585 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
27586 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
27587 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
27588 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
27589 | the demangler."), | |
27590 | NULL, show_check_physname, | |
27591 | &setdebuglist, &showdebuglist); | |
27592 | ||
e615022a DE |
27593 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
27594 | no_class, &use_deprecated_index_sections, _("\ | |
27595 | Set whether to use deprecated gdb_index sections."), _("\ | |
27596 | Show whether to use deprecated gdb_index sections."), _("\ | |
27597 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
27598 | Normally they are ignored either because of a missing feature or\n\ | |
27599 | performance issue.\n\ | |
27600 | Warning: This option must be enabled before gdb reads the file."), | |
27601 | NULL, | |
27602 | NULL, | |
27603 | &setlist, &showlist); | |
27604 | ||
96d19272 | 27605 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 27606 | _("\ |
fc1a9d6e | 27607 | Save a gdb-index file.\n\ |
437afbb8 JK |
27608 | Usage: save gdb-index [-dwarf-5] DIRECTORY\n\ |
27609 | \n\ | |
27610 | No options create one file with .gdb-index extension for pre-DWARF-5\n\ | |
27611 | compatible .gdb_index section. With -dwarf-5 creates two files with\n\ | |
27612 | extension .debug_names and .debug_str for DWARF-5 .debug_names section."), | |
96d19272 JK |
27613 | &save_cmdlist); |
27614 | set_cmd_completer (c, filename_completer); | |
f1e6e072 TT |
27615 | |
27616 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, | |
27617 | &dwarf2_locexpr_funcs); | |
27618 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
27619 | &dwarf2_loclist_funcs); | |
27620 | ||
27621 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
27622 | &dwarf2_block_frame_base_locexpr_funcs); | |
27623 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
27624 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
27625 | |
27626 | #if GDB_SELF_TEST | |
27627 | selftests::register_test ("dw2_expand_symtabs_matching", | |
27628 | selftests::dw2_expand_symtabs_matching::run_test); | |
27629 | #endif | |
6502dd73 | 27630 | } |