Commit | Line | Data |
---|---|---|
c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
b811d2c2 | 3 | Copyright (C) 1994-2020 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 | 31 | #include "defs.h" |
82ca8957 | 32 | #include "dwarf2/read.h" |
3054dd54 | 33 | #include "dwarf2/abbrev.h" |
162dce55 | 34 | #include "dwarf2/attribute.h" |
4057dfde | 35 | #include "dwarf2/comp-unit.h" |
82ca8957 TT |
36 | #include "dwarf2/index-cache.h" |
37 | #include "dwarf2/index-common.h" | |
f4382c45 | 38 | #include "dwarf2/leb.h" |
8fdd972c | 39 | #include "dwarf2/line-header.h" |
9fda78b6 | 40 | #include "dwarf2/dwz.h" |
c90ec28a | 41 | #include "dwarf2/macro.h" |
c2d50fd0 | 42 | #include "dwarf2/die.h" |
2b2558bf | 43 | #include "dwarf2/stringify.h" |
4de283e4 TT |
44 | #include "bfd.h" |
45 | #include "elf-bfd.h" | |
46 | #include "symtab.h" | |
47 | #include "gdbtypes.h" | |
48 | #include "objfiles.h" | |
d55e5aa6 | 49 | #include "dwarf2.h" |
4de283e4 TT |
50 | #include "buildsym.h" |
51 | #include "demangle.h" | |
52 | #include "gdb-demangle.h" | |
4de283e4 | 53 | #include "filenames.h" /* for DOSish file names */ |
4de283e4 TT |
54 | #include "language.h" |
55 | #include "complaints.h" | |
82ca8957 TT |
56 | #include "dwarf2/expr.h" |
57 | #include "dwarf2/loc.h" | |
4de283e4 TT |
58 | #include "cp-support.h" |
59 | #include "hashtab.h" | |
60 | #include "command.h" | |
d55e5aa6 | 61 | #include "gdbcmd.h" |
4de283e4 TT |
62 | #include "block.h" |
63 | #include "addrmap.h" | |
64 | #include "typeprint.h" | |
65 | #include "psympriv.h" | |
4de283e4 | 66 | #include "c-lang.h" |
d55e5aa6 | 67 | #include "go-lang.h" |
4de283e4 TT |
68 | #include "valprint.h" |
69 | #include "gdbcore.h" /* for gnutarget */ | |
70 | #include "gdb/gdb-index.h" | |
4de283e4 TT |
71 | #include "gdb_bfd.h" |
72 | #include "f-lang.h" | |
73 | #include "source.h" | |
4de283e4 | 74 | #include "build-id.h" |
d55e5aa6 | 75 | #include "namespace.h" |
268a13a5 TT |
76 | #include "gdbsupport/function-view.h" |
77 | #include "gdbsupport/gdb_optional.h" | |
78 | #include "gdbsupport/underlying.h" | |
268a13a5 | 79 | #include "gdbsupport/hash_enum.h" |
4de283e4 | 80 | #include "filename-seen-cache.h" |
b32b108a | 81 | #include "producer.h" |
4de283e4 | 82 | #include <fcntl.h> |
4de283e4 | 83 | #include <algorithm> |
4de283e4 | 84 | #include <unordered_map> |
268a13a5 | 85 | #include "gdbsupport/selftest.h" |
c9317f21 | 86 | #include "rust-lang.h" |
268a13a5 | 87 | #include "gdbsupport/pathstuff.h" |
edd45eb0 | 88 | #include "count-one-bits.h" |
0d79cdc4 | 89 | #include "debuginfod-support.h" |
437afbb8 | 90 | |
73be47f5 DE |
91 | /* When == 1, print basic high level tracing messages. |
92 | When > 1, be more verbose. | |
b4f54984 DE |
93 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
94 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 95 | |
d97bc12b | 96 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 97 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 98 | |
27e0867f | 99 | /* When non-zero, dump line number entries as they are read in. */ |
8fdd972c | 100 | unsigned int dwarf_line_debug = 0; |
27e0867f | 101 | |
491144b5 CB |
102 | /* When true, cross-check physname against demangler. */ |
103 | static bool check_physname = false; | |
900e11f9 | 104 | |
491144b5 CB |
105 | /* When true, do not reject deprecated .gdb_index sections. */ |
106 | static bool use_deprecated_index_sections = false; | |
481860b3 | 107 | |
17ee85fc TT |
108 | /* This is used to store the data that is always per objfile. */ |
109 | static const objfile_key<dwarf2_per_objfile> dwarf2_objfile_data_key; | |
110 | ||
111 | /* These are used to store the dwarf2_per_bfd objects. | |
112 | ||
113 | objfiles having the same BFD, which doesn't require relocations, are going to | |
114 | share a dwarf2_per_bfd object, which is held in the _bfd_data_key version. | |
115 | ||
116 | Other objfiles are not going to share a dwarf2_per_bfd with any other | |
117 | objfiles, so they'll have their own version kept in the _objfile_data_key | |
118 | version. */ | |
119 | static const struct bfd_key<dwarf2_per_bfd> dwarf2_per_bfd_bfd_data_key; | |
120 | static const struct objfile_key<dwarf2_per_bfd> dwarf2_per_bfd_objfile_data_key; | |
6502dd73 | 121 | |
f1e6e072 TT |
122 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
123 | ||
124 | static int dwarf2_locexpr_index; | |
125 | static int dwarf2_loclist_index; | |
126 | static int dwarf2_locexpr_block_index; | |
127 | static int dwarf2_loclist_block_index; | |
128 | ||
41144253 | 129 | /* Size of .debug_loclists section header for 32-bit DWARF format. */ |
130 | #define LOCLIST_HEADER_SIZE32 12 | |
131 | ||
132 | /* Size of .debug_loclists section header for 64-bit DWARF format. */ | |
133 | #define LOCLIST_HEADER_SIZE64 20 | |
134 | ||
d0ce17d8 CT |
135 | /* Size of .debug_rnglists section header for 32-bit DWARF format. */ |
136 | #define RNGLIST_HEADER_SIZE32 12 | |
137 | ||
138 | /* Size of .debug_rnglists section header for 64-bit DWARF format. */ | |
139 | #define RNGLIST_HEADER_SIZE64 20 | |
140 | ||
3f563c84 PA |
141 | /* An index into a (C++) symbol name component in a symbol name as |
142 | recorded in the mapped_index's symbol table. For each C++ symbol | |
143 | in the symbol table, we record one entry for the start of each | |
144 | component in the symbol in a table of name components, and then | |
145 | sort the table, in order to be able to binary search symbol names, | |
146 | ignoring leading namespaces, both completion and regular look up. | |
147 | For example, for symbol "A::B::C", we'll have an entry that points | |
148 | to "A::B::C", another that points to "B::C", and another for "C". | |
149 | Note that function symbols in GDB index have no parameter | |
150 | information, just the function/method names. You can convert a | |
151 | name_component to a "const char *" using the | |
152 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
153 | ||
154 | struct name_component | |
155 | { | |
156 | /* Offset in the symbol name where the component starts. Stored as | |
157 | a (32-bit) offset instead of a pointer to save memory and improve | |
158 | locality on 64-bit architectures. */ | |
159 | offset_type name_offset; | |
160 | ||
161 | /* The symbol's index in the symbol and constant pool tables of a | |
162 | mapped_index. */ | |
163 | offset_type idx; | |
164 | }; | |
165 | ||
44ed8f3e PA |
166 | /* Base class containing bits shared by both .gdb_index and |
167 | .debug_name indexes. */ | |
168 | ||
169 | struct mapped_index_base | |
170 | { | |
22ca247e TT |
171 | mapped_index_base () = default; |
172 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
173 | ||
44ed8f3e PA |
174 | /* The name_component table (a sorted vector). See name_component's |
175 | description above. */ | |
176 | std::vector<name_component> name_components; | |
177 | ||
178 | /* How NAME_COMPONENTS is sorted. */ | |
179 | enum case_sensitivity name_components_casing; | |
180 | ||
181 | /* Return the number of names in the symbol table. */ | |
182 | virtual size_t symbol_name_count () const = 0; | |
183 | ||
184 | /* Get the name of the symbol at IDX in the symbol table. */ | |
fcf23d5b SM |
185 | virtual const char *symbol_name_at |
186 | (offset_type idx, dwarf2_per_objfile *per_objfile) const = 0; | |
44ed8f3e PA |
187 | |
188 | /* Return whether the name at IDX in the symbol table should be | |
189 | ignored. */ | |
190 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
191 | { | |
192 | return false; | |
193 | } | |
194 | ||
195 | /* Build the symbol name component sorted vector, if we haven't | |
196 | yet. */ | |
fcf23d5b | 197 | void build_name_components (dwarf2_per_objfile *per_objfile); |
44ed8f3e PA |
198 | |
199 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
200 | possible matches for LN_NO_PARAMS in the name component | |
201 | vector. */ | |
202 | std::pair<std::vector<name_component>::const_iterator, | |
203 | std::vector<name_component>::const_iterator> | |
3b00ef10 | 204 | find_name_components_bounds (const lookup_name_info &ln_no_params, |
fcf23d5b SM |
205 | enum language lang, |
206 | dwarf2_per_objfile *per_objfile) const; | |
44ed8f3e PA |
207 | |
208 | /* Prevent deleting/destroying via a base class pointer. */ | |
209 | protected: | |
210 | ~mapped_index_base() = default; | |
211 | }; | |
212 | ||
9291a0cd TT |
213 | /* A description of the mapped index. The file format is described in |
214 | a comment by the code that writes the index. */ | |
fc898b42 | 215 | struct mapped_index final : public mapped_index_base |
9291a0cd | 216 | { |
f00a2de2 PA |
217 | /* A slot/bucket in the symbol table hash. */ |
218 | struct symbol_table_slot | |
219 | { | |
220 | const offset_type name; | |
221 | const offset_type vec; | |
222 | }; | |
223 | ||
559a7a62 | 224 | /* Index data format version. */ |
3063847f | 225 | int version = 0; |
559a7a62 | 226 | |
f00a2de2 PA |
227 | /* The address table data. */ |
228 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 229 | |
3876f04e | 230 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 231 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 232 | |
9291a0cd | 233 | /* A pointer to the constant pool. */ |
3063847f | 234 | const char *constant_pool = nullptr; |
3f563c84 | 235 | |
44ed8f3e PA |
236 | bool symbol_name_slot_invalid (offset_type idx) const override |
237 | { | |
238 | const auto &bucket = this->symbol_table[idx]; | |
9ab08412 | 239 | return bucket.name == 0 && bucket.vec == 0; |
44ed8f3e | 240 | } |
5c58de74 | 241 | |
3f563c84 PA |
242 | /* Convenience method to get at the name of the symbol at IDX in the |
243 | symbol table. */ | |
fcf23d5b SM |
244 | const char *symbol_name_at |
245 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
f00a2de2 | 246 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 247 | |
44ed8f3e PA |
248 | size_t symbol_name_count () const override |
249 | { return this->symbol_table.size (); } | |
9291a0cd TT |
250 | }; |
251 | ||
927aa2e7 JK |
252 | /* A description of the mapped .debug_names. |
253 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 254 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 JK |
255 | { |
256 | bfd_endian dwarf5_byte_order; | |
257 | bool dwarf5_is_dwarf64; | |
258 | bool augmentation_is_gdb; | |
259 | uint8_t offset_size; | |
260 | uint32_t cu_count = 0; | |
261 | uint32_t tu_count, bucket_count, name_count; | |
262 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
263 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
264 | const gdb_byte *name_table_string_offs_reordered; | |
265 | const gdb_byte *name_table_entry_offs_reordered; | |
266 | const gdb_byte *entry_pool; | |
267 | ||
268 | struct index_val | |
269 | { | |
270 | ULONGEST dwarf_tag; | |
271 | struct attr | |
272 | { | |
273 | /* Attribute name DW_IDX_*. */ | |
274 | ULONGEST dw_idx; | |
275 | ||
276 | /* Attribute form DW_FORM_*. */ | |
277 | ULONGEST form; | |
278 | ||
279 | /* Value if FORM is DW_FORM_implicit_const. */ | |
280 | LONGEST implicit_const; | |
281 | }; | |
282 | std::vector<attr> attr_vec; | |
283 | }; | |
284 | ||
285 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
286 | ||
fcf23d5b SM |
287 | const char *namei_to_name |
288 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const; | |
44ed8f3e PA |
289 | |
290 | /* Implementation of the mapped_index_base virtual interface, for | |
291 | the name_components cache. */ | |
292 | ||
fcf23d5b SM |
293 | const char *symbol_name_at |
294 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
295 | { return namei_to_name (idx, per_objfile); } | |
44ed8f3e PA |
296 | |
297 | size_t symbol_name_count () const override | |
298 | { return this->name_count; } | |
927aa2e7 JK |
299 | }; |
300 | ||
cd4fb1b2 | 301 | /* See dwarf2read.h. */ |
ed2dc618 | 302 | |
cd4fb1b2 | 303 | dwarf2_per_objfile * |
ed2dc618 SM |
304 | get_dwarf2_per_objfile (struct objfile *objfile) |
305 | { | |
5bfd760d | 306 | return dwarf2_objfile_data_key.get (objfile); |
ed2dc618 | 307 | } |
c906108c | 308 | |
251d32d9 | 309 | /* Default names of the debugging sections. */ |
c906108c | 310 | |
233a11ab CS |
311 | /* Note that if the debugging section has been compressed, it might |
312 | have a name like .zdebug_info. */ | |
313 | ||
9cdd5dbd DE |
314 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
315 | { | |
251d32d9 TG |
316 | { ".debug_info", ".zdebug_info" }, |
317 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
318 | { ".debug_line", ".zdebug_line" }, | |
319 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 320 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 321 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 322 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 323 | { ".debug_str", ".zdebug_str" }, |
18a8505e | 324 | { ".debug_str_offsets", ".zdebug_str_offsets" }, |
43988095 | 325 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 326 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 327 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 328 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 329 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
330 | { ".debug_frame", ".zdebug_frame" }, |
331 | { ".eh_frame", NULL }, | |
24d3216f | 332 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
333 | { ".debug_names", ".zdebug_names" }, |
334 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 335 | 23 |
251d32d9 | 336 | }; |
c906108c | 337 | |
80626a55 | 338 | /* List of DWO/DWP sections. */ |
3019eac3 | 339 | |
80626a55 | 340 | static const struct dwop_section_names |
3019eac3 DE |
341 | { |
342 | struct dwarf2_section_names abbrev_dwo; | |
343 | struct dwarf2_section_names info_dwo; | |
344 | struct dwarf2_section_names line_dwo; | |
345 | struct dwarf2_section_names loc_dwo; | |
43988095 | 346 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
347 | struct dwarf2_section_names macinfo_dwo; |
348 | struct dwarf2_section_names macro_dwo; | |
d0ce17d8 | 349 | struct dwarf2_section_names rnglists_dwo; |
3019eac3 DE |
350 | struct dwarf2_section_names str_dwo; |
351 | struct dwarf2_section_names str_offsets_dwo; | |
352 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
353 | struct dwarf2_section_names cu_index; |
354 | struct dwarf2_section_names tu_index; | |
3019eac3 | 355 | } |
80626a55 | 356 | dwop_section_names = |
3019eac3 DE |
357 | { |
358 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
359 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
360 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
361 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 362 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
363 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
364 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
d0ce17d8 | 365 | { ".debug_rnglists.dwo", ".zdebug_rnglists.dwo" }, |
3019eac3 DE |
366 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
367 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
368 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
369 | { ".debug_cu_index", ".zdebug_cu_index" }, |
370 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
371 | }; |
372 | ||
c906108c SS |
373 | /* local data types */ |
374 | ||
d0ce17d8 CT |
375 | /* The location list and range list sections (.debug_loclists & .debug_rnglists) |
376 | begin with a header, which contains the following information. */ | |
377 | struct loclists_rnglists_header | |
41144253 | 378 | { |
379 | /* A 4-byte or 12-byte length containing the length of the | |
380 | set of entries for this compilation unit, not including the | |
381 | length field itself. */ | |
382 | unsigned int length; | |
383 | ||
384 | /* A 2-byte version identifier. */ | |
385 | short version; | |
386 | ||
387 | /* A 1-byte unsigned integer containing the size in bytes of an address on | |
388 | the target system. */ | |
389 | unsigned char addr_size; | |
390 | ||
391 | /* A 1-byte unsigned integer containing the size in bytes of a segment selector | |
392 | on the target system. */ | |
393 | unsigned char segment_collector_size; | |
394 | ||
395 | /* A 4-byte count of the number of offsets that follow the header. */ | |
396 | unsigned int offset_entry_count; | |
397 | }; | |
398 | ||
3da10d80 KS |
399 | /* Type used for delaying computation of method physnames. |
400 | See comments for compute_delayed_physnames. */ | |
401 | struct delayed_method_info | |
402 | { | |
403 | /* The type to which the method is attached, i.e., its parent class. */ | |
404 | struct type *type; | |
405 | ||
406 | /* The index of the method in the type's function fieldlists. */ | |
407 | int fnfield_index; | |
408 | ||
409 | /* The index of the method in the fieldlist. */ | |
410 | int index; | |
411 | ||
412 | /* The name of the DIE. */ | |
413 | const char *name; | |
414 | ||
415 | /* The DIE associated with this method. */ | |
416 | struct die_info *die; | |
417 | }; | |
418 | ||
e7c27a73 DJ |
419 | /* Internal state when decoding a particular compilation unit. */ |
420 | struct dwarf2_cu | |
421 | { | |
9e021579 SM |
422 | explicit dwarf2_cu (dwarf2_per_cu_data *per_cu, |
423 | dwarf2_per_objfile *per_objfile); | |
fcd3b13d SM |
424 | |
425 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
426 | ||
c24bdb02 KS |
427 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
428 | Create the set of symtabs used by this TU, or if this TU is sharing | |
429 | symtabs with another TU and the symtabs have already been created | |
430 | then restore those symtabs in the line header. | |
431 | We don't need the pc/line-number mapping for type units. */ | |
432 | void setup_type_unit_groups (struct die_info *die); | |
433 | ||
434 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
435 | buildsym_compunit constructor. */ | |
436 | struct compunit_symtab *start_symtab (const char *name, | |
437 | const char *comp_dir, | |
438 | CORE_ADDR low_pc); | |
439 | ||
440 | /* Reset the builder. */ | |
441 | void reset_builder () { m_builder.reset (); } | |
442 | ||
293e7e51 SM |
443 | /* Return a type that is a generic pointer type, the size of which |
444 | matches the address size given in the compilation unit header for | |
445 | this CU. */ | |
446 | struct type *addr_type () const; | |
447 | ||
448 | /* Find an integer type the same size as the address size given in | |
449 | the compilation unit header for this CU. UNSIGNED_P controls if | |
450 | the integer is unsigned or not. */ | |
451 | struct type *addr_sized_int_type (bool unsigned_p) const; | |
452 | ||
d00adf39 | 453 | /* The header of the compilation unit. */ |
fcd3b13d | 454 | struct comp_unit_head header {}; |
e142c38c | 455 | |
d00adf39 | 456 | /* Base address of this compilation unit. */ |
2b24b6e4 | 457 | gdb::optional<CORE_ADDR> base_address; |
d00adf39 | 458 | |
e142c38c | 459 | /* The language we are debugging. */ |
fcd3b13d SM |
460 | enum language language = language_unknown; |
461 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 462 | |
fcd3b13d | 463 | const char *producer = nullptr; |
b0f35d58 | 464 | |
c24bdb02 | 465 | private: |
804d2729 TT |
466 | /* The symtab builder for this CU. This is only non-NULL when full |
467 | symbols are being read. */ | |
c24bdb02 | 468 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 469 | |
c24bdb02 | 470 | public: |
e142c38c DJ |
471 | /* The generic symbol table building routines have separate lists for |
472 | file scope symbols and all all other scopes (local scopes). So | |
473 | we need to select the right one to pass to add_symbol_to_list(). | |
474 | We do it by keeping a pointer to the correct list in list_in_scope. | |
475 | ||
476 | FIXME: The original dwarf code just treated the file scope as the | |
477 | first local scope, and all other local scopes as nested local | |
478 | scopes, and worked fine. Check to see if we really need to | |
479 | distinguish these in buildsym.c. */ | |
fcd3b13d | 480 | struct pending **list_in_scope = nullptr; |
e142c38c | 481 | |
b64f50a1 JK |
482 | /* Hash table holding all the loaded partial DIEs |
483 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 484 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
485 | |
486 | /* Storage for things with the same lifetime as this read-in compilation | |
487 | unit, including partial DIEs. */ | |
fcd3b13d | 488 | auto_obstack comp_unit_obstack; |
72bf9492 | 489 | |
69d751e3 | 490 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
491 | struct dwarf2_per_cu_data *per_cu; |
492 | ||
9e021579 | 493 | /* The dwarf2_per_objfile that owns this. */ |
976ca316 | 494 | dwarf2_per_objfile *per_objfile; |
9e021579 | 495 | |
ae038cb0 | 496 | /* How many compilation units ago was this CU last referenced? */ |
fcd3b13d | 497 | int last_used = 0; |
ae038cb0 | 498 | |
b64f50a1 JK |
499 | /* A hash table of DIE cu_offset for following references with |
500 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 501 | htab_t die_hash = nullptr; |
10b3939b DJ |
502 | |
503 | /* Full DIEs if read in. */ | |
fcd3b13d | 504 | struct die_info *dies = nullptr; |
10b3939b DJ |
505 | |
506 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
507 | units referenced by this one. Only set during full symbol processing; | |
508 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 509 | htab_t dependencies = nullptr; |
10b3939b | 510 | |
cb1df416 | 511 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 512 | struct line_header *line_header = nullptr; |
4c8aa72d | 513 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
5989a64e | 514 | it's owned by dwarf2_per_bfd::line_header_hash. If non-NULL, |
4c8aa72d PA |
515 | this is the DW_TAG_compile_unit die for this CU. We'll hold on |
516 | to the line header as long as this DIE is being processed. See | |
517 | process_die_scope. */ | |
fcd3b13d | 518 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 519 | |
3da10d80 KS |
520 | /* A list of methods which need to have physnames computed |
521 | after all type information has been read. */ | |
c89b44cd | 522 | std::vector<delayed_method_info> method_list; |
3da10d80 | 523 | |
96408a79 | 524 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 525 | htab_t call_site_htab = nullptr; |
96408a79 | 526 | |
034e5797 DE |
527 | /* Non-NULL if this CU came from a DWO file. |
528 | There is an invariant here that is important to remember: | |
529 | Except for attributes copied from the top level DIE in the "main" | |
530 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 531 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
532 | Either there isn't a DWO file (in which case this is NULL and the point |
533 | is moot), or there is and either we're not going to read it (in which | |
534 | case this is NULL) or there is and we are reading it (in which case this | |
535 | is non-NULL). */ | |
fcd3b13d | 536 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 537 | |
18a8505e | 538 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 539 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 540 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 541 | |
18a8505e | 542 | /* The DW_AT_rnglists_base attribute if present. |
1dbab08b | 543 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 544 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
545 | be used without needing to know whether DWO files are in use or not. |
546 | N.B. This does not apply to DW_AT_ranges appearing in | |
547 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
548 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
18a8505e | 549 | DW_AT_rnglists_base *would* have to be applied, and we'd have to care |
ab435259 | 550 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ |
fcd3b13d | 551 | ULONGEST ranges_base = 0; |
2e3cf129 | 552 | |
41144253 | 553 | /* The DW_AT_loclists_base attribute if present. */ |
554 | ULONGEST loclist_base = 0; | |
555 | ||
c9317f21 TT |
556 | /* When reading debug info generated by older versions of rustc, we |
557 | have to rewrite some union types to be struct types with a | |
558 | variant part. This rewriting must be done after the CU is fully | |
559 | read in, because otherwise at the point of rewriting some struct | |
560 | type might not have been fully processed. So, we keep a list of | |
561 | all such types here and process them after expansion. */ | |
562 | std::vector<struct type *> rust_unions; | |
563 | ||
18a8505e AT |
564 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
565 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
566 | value is often implicit and is the size of the header of | |
567 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
568 | gdb::optional<ULONGEST> str_offsets_base; | |
569 | ||
ae038cb0 | 570 | /* Mark used when releasing cached dies. */ |
9068261f | 571 | bool mark : 1; |
ae038cb0 | 572 | |
8be455d7 JK |
573 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
574 | This test is imperfect as there may exist optimized debug code not using | |
575 | any location list and still facing inlining issues if handled as | |
576 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 577 | bool has_loclist : 1; |
ba919b58 | 578 | |
9068261f | 579 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
580 | if all the producer_is_* fields are valid. This information is cached |
581 | because profiling CU expansion showed excessive time spent in | |
582 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
583 | bool checked_producer : 1; |
584 | bool producer_is_gxx_lt_4_6 : 1; | |
585 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 586 | bool producer_is_icc : 1; |
9068261f | 587 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 588 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 589 | |
9068261f | 590 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
591 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
592 | this information, but later versions do. */ | |
593 | ||
9068261f | 594 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
595 | |
596 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
597 | |
598 | /* If this CU was inherited by another CU (via specification, | |
599 | abstract_origin, etc), this is the ancestor CU. */ | |
600 | dwarf2_cu *ancestor; | |
601 | ||
602 | /* Get the buildsym_compunit for this CU. */ | |
603 | buildsym_compunit *get_builder () | |
604 | { | |
605 | /* If this CU has a builder associated with it, use that. */ | |
606 | if (m_builder != nullptr) | |
607 | return m_builder.get (); | |
608 | ||
609 | /* Otherwise, search ancestors for a valid builder. */ | |
610 | if (ancestor != nullptr) | |
611 | return ancestor->get_builder (); | |
612 | ||
613 | return nullptr; | |
614 | } | |
e7c27a73 DJ |
615 | }; |
616 | ||
094b34ac DE |
617 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
618 | This includes type_unit_group and quick_file_names. */ | |
619 | ||
620 | struct stmt_list_hash | |
621 | { | |
622 | /* The DWO unit this table is from or NULL if there is none. */ | |
623 | struct dwo_unit *dwo_unit; | |
624 | ||
625 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 626 | sect_offset line_sect_off; |
094b34ac DE |
627 | }; |
628 | ||
5989a64e | 629 | /* Each element of dwarf2_per_bfd->type_unit_groups is a pointer to |
8adb8487 TT |
630 | an object of this type. This contains elements of type unit groups |
631 | that can be shared across objfiles. The non-shareable parts are in | |
632 | type_unit_group_unshareable. */ | |
f4dc4d17 DE |
633 | |
634 | struct type_unit_group | |
635 | { | |
0186c6a7 | 636 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
637 | To simplify things we create an artificial CU that "includes" all the |
638 | type units using this stmt_list so that the rest of the code still has | |
197400e8 | 639 | a "per_cu" handle on the symtab. */ |
094b34ac DE |
640 | struct dwarf2_per_cu_data per_cu; |
641 | ||
0186c6a7 DE |
642 | /* The TUs that share this DW_AT_stmt_list entry. |
643 | This is added to while parsing type units to build partial symtabs, | |
644 | and is deleted afterwards and not used again. */ | |
a8b3b8e9 | 645 | std::vector<signatured_type *> *tus; |
f4dc4d17 | 646 | |
094b34ac DE |
647 | /* The data used to construct the hash key. */ |
648 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
649 | }; |
650 | ||
73869dc2 | 651 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
652 | |
653 | struct dwo_sections | |
654 | { | |
655 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
656 | struct dwarf2_section_info line; |
657 | struct dwarf2_section_info loc; | |
43988095 | 658 | struct dwarf2_section_info loclists; |
09262596 DE |
659 | struct dwarf2_section_info macinfo; |
660 | struct dwarf2_section_info macro; | |
d0ce17d8 | 661 | struct dwarf2_section_info rnglists; |
3019eac3 DE |
662 | struct dwarf2_section_info str; |
663 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
664 | /* In the case of a virtual DWO file, these two are unused. */ |
665 | struct dwarf2_section_info info; | |
fd5866f6 | 666 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
667 | }; |
668 | ||
c88ee1f0 | 669 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
670 | |
671 | struct dwo_unit | |
672 | { | |
673 | /* Backlink to the containing struct dwo_file. */ | |
674 | struct dwo_file *dwo_file; | |
675 | ||
676 | /* The "id" that distinguishes this CU/TU. | |
677 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
678 | Since signatures came first, we stick with it for consistency. */ | |
679 | ULONGEST signature; | |
680 | ||
681 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 682 | struct dwarf2_section_info *section; |
3019eac3 | 683 | |
9c541725 PA |
684 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
685 | sect_offset sect_off; | |
3019eac3 DE |
686 | unsigned int length; |
687 | ||
688 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
689 | cu_offset type_offset_in_tu; | |
690 | }; | |
691 | ||
73869dc2 DE |
692 | /* include/dwarf2.h defines the DWP section codes. |
693 | It defines a max value but it doesn't define a min value, which we | |
694 | use for error checking, so provide one. */ | |
695 | ||
696 | enum dwp_v2_section_ids | |
697 | { | |
698 | DW_SECT_MIN = 1 | |
699 | }; | |
700 | ||
80626a55 | 701 | /* Data for one DWO file. |
57d63ce2 DE |
702 | |
703 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
704 | appears in a DWP file). DWP files don't really have DWO files per se - | |
705 | comdat folding of types "loses" the DWO file they came from, and from | |
706 | a high level view DWP files appear to contain a mass of random types. | |
707 | However, to maintain consistency with the non-DWP case we pretend DWP | |
708 | files contain virtual DWO files, and we assign each TU with one virtual | |
709 | DWO file (generally based on the line and abbrev section offsets - | |
710 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
711 | |
712 | struct dwo_file | |
713 | { | |
51ac9db5 SM |
714 | dwo_file () = default; |
715 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
716 | ||
18a8505e | 717 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
718 | For virtual DWO files the name is constructed from the section offsets |
719 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
720 | from related CU+TUs. */ | |
51ac9db5 | 721 | const char *dwo_name = nullptr; |
0ac5b59e DE |
722 | |
723 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 724 | const char *comp_dir = nullptr; |
3019eac3 | 725 | |
80626a55 DE |
726 | /* The bfd, when the file is open. Otherwise this is NULL. |
727 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 728 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 729 | |
73869dc2 | 730 | /* The sections that make up this DWO file. |
d2854d8d | 731 | Remember that for virtual DWO files in DWP V2 or DWP V5, these are virtual |
73869dc2 | 732 | sections (for lack of a better name). */ |
51ac9db5 | 733 | struct dwo_sections sections {}; |
3019eac3 | 734 | |
33c5cd75 DB |
735 | /* The CUs in the file. |
736 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
737 | an extension to handle LLVM's Link Time Optimization output (where | |
738 | multiple source files may be compiled into a single object/dwo pair). */ | |
b0b6a987 | 739 | htab_up cus; |
3019eac3 DE |
740 | |
741 | /* Table of TUs in the file. | |
742 | Each element is a struct dwo_unit. */ | |
b0b6a987 | 743 | htab_up tus; |
3019eac3 DE |
744 | }; |
745 | ||
80626a55 DE |
746 | /* These sections are what may appear in a DWP file. */ |
747 | ||
748 | struct dwp_sections | |
749 | { | |
d2854d8d | 750 | /* These are used by all DWP versions (1, 2 and 5). */ |
80626a55 DE |
751 | struct dwarf2_section_info str; |
752 | struct dwarf2_section_info cu_index; | |
753 | struct dwarf2_section_info tu_index; | |
73869dc2 | 754 | |
d2854d8d | 755 | /* These are only used by DWP version 2 and version 5 files. |
73869dc2 DE |
756 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other |
757 | sections are referenced by section number, and are not recorded here. | |
d2854d8d CT |
758 | In DWP version 2 or 5 there is at most one copy of all these sections, |
759 | each section being (effectively) comprised of the concatenation of all of | |
760 | the individual sections that exist in the version 1 format. | |
73869dc2 DE |
761 | To keep the code simple we treat each of these concatenated pieces as a |
762 | section itself (a virtual section?). */ | |
763 | struct dwarf2_section_info abbrev; | |
764 | struct dwarf2_section_info info; | |
765 | struct dwarf2_section_info line; | |
766 | struct dwarf2_section_info loc; | |
d2854d8d | 767 | struct dwarf2_section_info loclists; |
73869dc2 DE |
768 | struct dwarf2_section_info macinfo; |
769 | struct dwarf2_section_info macro; | |
d2854d8d | 770 | struct dwarf2_section_info rnglists; |
73869dc2 DE |
771 | struct dwarf2_section_info str_offsets; |
772 | struct dwarf2_section_info types; | |
80626a55 DE |
773 | }; |
774 | ||
73869dc2 DE |
775 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
776 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 777 | |
73869dc2 | 778 | struct virtual_v1_dwo_sections |
80626a55 DE |
779 | { |
780 | struct dwarf2_section_info abbrev; | |
781 | struct dwarf2_section_info line; | |
782 | struct dwarf2_section_info loc; | |
783 | struct dwarf2_section_info macinfo; | |
784 | struct dwarf2_section_info macro; | |
785 | struct dwarf2_section_info str_offsets; | |
786 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 787 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
788 | struct dwarf2_section_info info_or_types; |
789 | }; | |
790 | ||
d2854d8d | 791 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2 or 5. |
73869dc2 DE |
792 | In version 2, the sections of the DWO files are concatenated together |
793 | and stored in one section of that name. Thus each ELF section contains | |
794 | several "virtual" sections. */ | |
795 | ||
d2854d8d | 796 | struct virtual_v2_or_v5_dwo_sections |
73869dc2 DE |
797 | { |
798 | bfd_size_type abbrev_offset; | |
799 | bfd_size_type abbrev_size; | |
800 | ||
801 | bfd_size_type line_offset; | |
802 | bfd_size_type line_size; | |
803 | ||
804 | bfd_size_type loc_offset; | |
805 | bfd_size_type loc_size; | |
806 | ||
d2854d8d CT |
807 | bfd_size_type loclists_offset; |
808 | bfd_size_type loclists_size; | |
809 | ||
73869dc2 DE |
810 | bfd_size_type macinfo_offset; |
811 | bfd_size_type macinfo_size; | |
812 | ||
813 | bfd_size_type macro_offset; | |
814 | bfd_size_type macro_size; | |
815 | ||
d2854d8d CT |
816 | bfd_size_type rnglists_offset; |
817 | bfd_size_type rnglists_size; | |
818 | ||
73869dc2 DE |
819 | bfd_size_type str_offsets_offset; |
820 | bfd_size_type str_offsets_size; | |
821 | ||
822 | /* Each DWP hash table entry records one CU or one TU. | |
823 | That is recorded here, and copied to dwo_unit.section. */ | |
824 | bfd_size_type info_or_types_offset; | |
825 | bfd_size_type info_or_types_size; | |
826 | }; | |
827 | ||
80626a55 DE |
828 | /* Contents of DWP hash tables. */ |
829 | ||
830 | struct dwp_hash_table | |
831 | { | |
73869dc2 | 832 | uint32_t version, nr_columns; |
80626a55 | 833 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
834 | const gdb_byte *hash_table, *unit_table; |
835 | union | |
836 | { | |
837 | struct | |
838 | { | |
839 | const gdb_byte *indices; | |
840 | } v1; | |
841 | struct | |
842 | { | |
843 | /* This is indexed by column number and gives the id of the section | |
844 | in that column. */ | |
845 | #define MAX_NR_V2_DWO_SECTIONS \ | |
846 | (1 /* .debug_info or .debug_types */ \ | |
847 | + 1 /* .debug_abbrev */ \ | |
848 | + 1 /* .debug_line */ \ | |
849 | + 1 /* .debug_loc */ \ | |
850 | + 1 /* .debug_str_offsets */ \ | |
851 | + 1 /* .debug_macro or .debug_macinfo */) | |
852 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
853 | const gdb_byte *offsets; | |
854 | const gdb_byte *sizes; | |
855 | } v2; | |
d2854d8d CT |
856 | struct |
857 | { | |
858 | /* This is indexed by column number and gives the id of the section | |
859 | in that column. */ | |
860 | #define MAX_NR_V5_DWO_SECTIONS \ | |
861 | (1 /* .debug_info */ \ | |
862 | + 1 /* .debug_abbrev */ \ | |
863 | + 1 /* .debug_line */ \ | |
864 | + 1 /* .debug_loclists */ \ | |
865 | + 1 /* .debug_str_offsets */ \ | |
866 | + 1 /* .debug_macro */ \ | |
867 | + 1 /* .debug_rnglists */) | |
868 | int section_ids[MAX_NR_V5_DWO_SECTIONS]; | |
869 | const gdb_byte *offsets; | |
870 | const gdb_byte *sizes; | |
871 | } v5; | |
73869dc2 | 872 | } section_pool; |
80626a55 DE |
873 | }; |
874 | ||
875 | /* Data for one DWP file. */ | |
876 | ||
877 | struct dwp_file | |
878 | { | |
400174b1 TT |
879 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
880 | : name (name_), | |
881 | dbfd (std::move (abfd)) | |
882 | { | |
883 | } | |
884 | ||
80626a55 DE |
885 | /* Name of the file. */ |
886 | const char *name; | |
887 | ||
73869dc2 | 888 | /* File format version. */ |
400174b1 | 889 | int version = 0; |
73869dc2 | 890 | |
93417882 | 891 | /* The bfd. */ |
400174b1 | 892 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
893 | |
894 | /* Section info for this file. */ | |
400174b1 | 895 | struct dwp_sections sections {}; |
80626a55 | 896 | |
57d63ce2 | 897 | /* Table of CUs in the file. */ |
400174b1 | 898 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
899 | |
900 | /* Table of TUs in the file. */ | |
400174b1 | 901 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 902 | |
19ac8c2e | 903 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
48b490f2 TT |
904 | htab_up loaded_cus; |
905 | htab_up loaded_tus; | |
80626a55 | 906 | |
73869dc2 DE |
907 | /* Table to map ELF section numbers to their sections. |
908 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
909 | unsigned int num_sections = 0; |
910 | asection **elf_sections = nullptr; | |
80626a55 DE |
911 | }; |
912 | ||
0963b4bd MS |
913 | /* Struct used to pass misc. parameters to read_die_and_children, et |
914 | al. which are used for both .debug_info and .debug_types dies. | |
915 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 916 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
917 | |
918 | struct die_reader_specs | |
919 | { | |
a32a8923 | 920 | /* The bfd of die_section. */ |
93311388 DE |
921 | bfd* abfd; |
922 | ||
923 | /* The CU of the DIE we are parsing. */ | |
924 | struct dwarf2_cu *cu; | |
925 | ||
80626a55 | 926 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
927 | struct dwo_file *dwo_file; |
928 | ||
dee91e82 | 929 | /* The section the die comes from. |
3019eac3 | 930 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
931 | struct dwarf2_section_info *die_section; |
932 | ||
933 | /* die_section->buffer. */ | |
d521ce57 | 934 | const gdb_byte *buffer; |
f664829e DE |
935 | |
936 | /* The end of the buffer. */ | |
937 | const gdb_byte *buffer_end; | |
a2ce51a0 | 938 | |
685af9cd TT |
939 | /* The abbreviation table to use when reading the DIEs. */ |
940 | struct abbrev_table *abbrev_table; | |
93311388 DE |
941 | }; |
942 | ||
c0ab21c2 TT |
943 | /* A subclass of die_reader_specs that holds storage and has complex |
944 | constructor and destructor behavior. */ | |
945 | ||
946 | class cutu_reader : public die_reader_specs | |
947 | { | |
948 | public: | |
949 | ||
ab432490 SM |
950 | cutu_reader (dwarf2_per_cu_data *this_cu, |
951 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 | 952 | struct abbrev_table *abbrev_table, |
2e671100 | 953 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
954 | bool skip_partial); |
955 | ||
956 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
ab432490 | 957 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
958 | struct dwarf2_cu *parent_cu = nullptr, |
959 | struct dwo_file *dwo_file = nullptr); | |
960 | ||
c0ab21c2 TT |
961 | DISABLE_COPY_AND_ASSIGN (cutu_reader); |
962 | ||
963 | const gdb_byte *info_ptr = nullptr; | |
964 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
965 | bool dummy_p = false; |
966 | ||
6751ebae TT |
967 | /* Release the new CU, putting it on the chain. This cannot be done |
968 | for dummy CUs. */ | |
969 | void keep (); | |
970 | ||
c0ab21c2 | 971 | private: |
9e021579 SM |
972 | void init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
973 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 974 | dwarf2_cu *existing_cu); |
c0ab21c2 TT |
975 | |
976 | struct dwarf2_per_cu_data *m_this_cu; | |
c0ab21c2 TT |
977 | std::unique_ptr<dwarf2_cu> m_new_cu; |
978 | ||
979 | /* The ordinary abbreviation table. */ | |
980 | abbrev_table_up m_abbrev_table_holder; | |
981 | ||
982 | /* The DWO abbreviation table. */ | |
983 | abbrev_table_up m_dwo_abbrev_table; | |
984 | }; | |
dee91e82 | 985 | |
c906108c | 986 | /* When we construct a partial symbol table entry we only |
0963b4bd | 987 | need this much information. */ |
6f06d47b | 988 | struct partial_die_info : public allocate_on_obstack |
c906108c | 989 | { |
6f06d47b YQ |
990 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
991 | ||
992 | /* Disable assign but still keep copy ctor, which is needed | |
993 | load_partial_dies. */ | |
994 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
995 | ||
52356b79 YQ |
996 | /* Adjust the partial die before generating a symbol for it. This |
997 | function may set the is_external flag or change the DIE's | |
998 | name. */ | |
999 | void fixup (struct dwarf2_cu *cu); | |
1000 | ||
48fbe735 YQ |
1001 | /* Read a minimal amount of information into the minimal die |
1002 | structure. */ | |
1003 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1004 | const struct abbrev_info &abbrev, | |
1005 | const gdb_byte *info_ptr); | |
1006 | ||
7d00ffec TT |
1007 | /* Compute the name of this partial DIE. This memoizes the |
1008 | result, so it is safe to call multiple times. */ | |
1009 | const char *name (dwarf2_cu *cu); | |
1010 | ||
72bf9492 | 1011 | /* Offset of this DIE. */ |
6f06d47b | 1012 | const sect_offset sect_off; |
72bf9492 DJ |
1013 | |
1014 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1015 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1016 | |
72bf9492 | 1017 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1018 | const unsigned int has_children : 1; |
1019 | ||
72bf9492 DJ |
1020 | unsigned int is_external : 1; |
1021 | unsigned int is_declaration : 1; | |
1022 | unsigned int has_type : 1; | |
1023 | unsigned int has_specification : 1; | |
1024 | unsigned int has_pc_info : 1; | |
481860b3 | 1025 | unsigned int may_be_inlined : 1; |
72bf9492 | 1026 | |
0c1b455e TT |
1027 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1028 | unsigned int main_subprogram : 1; | |
1029 | ||
72bf9492 DJ |
1030 | /* Flag set if the SCOPE field of this structure has been |
1031 | computed. */ | |
1032 | unsigned int scope_set : 1; | |
1033 | ||
fa4028e9 JB |
1034 | /* Flag set if the DIE has a byte_size attribute. */ |
1035 | unsigned int has_byte_size : 1; | |
1036 | ||
ff908ebf AW |
1037 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1038 | unsigned int has_const_value : 1; | |
1039 | ||
98bfdba5 PA |
1040 | /* Flag set if any of the DIE's children are template arguments. */ |
1041 | unsigned int has_template_arguments : 1; | |
1042 | ||
52356b79 | 1043 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1044 | unsigned int fixup_called : 1; |
1045 | ||
36586728 TT |
1046 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1047 | unsigned int is_dwz : 1; | |
1048 | ||
1049 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1050 | unsigned int spec_is_dwz : 1; | |
1051 | ||
7d00ffec TT |
1052 | unsigned int canonical_name : 1; |
1053 | ||
72bf9492 | 1054 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1055 | sometimes a default name for unnamed DIEs. */ |
7d00ffec | 1056 | const char *raw_name = nullptr; |
72bf9492 | 1057 | |
abc72ce4 | 1058 | /* The linkage name, if present. */ |
6f06d47b | 1059 | const char *linkage_name = nullptr; |
abc72ce4 | 1060 | |
72bf9492 DJ |
1061 | /* The scope to prepend to our children. This is generally |
1062 | allocated on the comp_unit_obstack, so will disappear | |
1063 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1064 | const char *scope = nullptr; |
72bf9492 | 1065 | |
95554aad TT |
1066 | /* Some data associated with the partial DIE. The tag determines |
1067 | which field is live. */ | |
1068 | union | |
1069 | { | |
1070 | /* The location description associated with this DIE, if any. */ | |
1071 | struct dwarf_block *locdesc; | |
1072 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1073 | sect_offset sect_off; |
6f06d47b | 1074 | } d {}; |
72bf9492 DJ |
1075 | |
1076 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1077 | CORE_ADDR lowpc = 0; |
1078 | CORE_ADDR highpc = 0; | |
72bf9492 | 1079 | |
93311388 | 1080 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1081 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1082 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1083 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1084 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1085 | |
1086 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1087 | DW_AT_specification (or DW_AT_abstract_origin or | |
1088 | DW_AT_extension). */ | |
6f06d47b | 1089 | sect_offset spec_offset {}; |
72bf9492 DJ |
1090 | |
1091 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1092 | if any. */ | |
6f06d47b YQ |
1093 | struct partial_die_info *die_parent = nullptr; |
1094 | struct partial_die_info *die_child = nullptr; | |
1095 | struct partial_die_info *die_sibling = nullptr; | |
1096 | ||
1097 | friend struct partial_die_info * | |
1098 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1099 | ||
1100 | private: | |
1101 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1102 | partial_die_info (sect_offset sect_off) | |
1103 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1104 | { | |
1105 | } | |
1106 | ||
1107 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1108 | int has_children_) | |
1109 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1110 | { | |
1111 | is_external = 0; | |
1112 | is_declaration = 0; | |
1113 | has_type = 0; | |
1114 | has_specification = 0; | |
1115 | has_pc_info = 0; | |
1116 | may_be_inlined = 0; | |
1117 | main_subprogram = 0; | |
1118 | scope_set = 0; | |
1119 | has_byte_size = 0; | |
1120 | has_const_value = 0; | |
1121 | has_template_arguments = 0; | |
1122 | fixup_called = 0; | |
1123 | is_dwz = 0; | |
1124 | spec_is_dwz = 0; | |
7d00ffec | 1125 | canonical_name = 0; |
6f06d47b | 1126 | } |
c906108c SS |
1127 | }; |
1128 | ||
c906108c SS |
1129 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1130 | but this would require a corresponding change in unpack_field_as_long | |
1131 | and friends. */ | |
1132 | static int bits_per_byte = 8; | |
1133 | ||
9c6a1327 TT |
1134 | struct variant_part_builder; |
1135 | ||
1136 | /* When reading a variant, we track a bit more information about the | |
1137 | field, and store it in an object of this type. */ | |
2ddeaf8a TT |
1138 | |
1139 | struct variant_field | |
1140 | { | |
9c6a1327 TT |
1141 | int first_field = -1; |
1142 | int last_field = -1; | |
1143 | ||
1144 | /* A variant can contain other variant parts. */ | |
1145 | std::vector<variant_part_builder> variant_parts; | |
1146 | ||
2ddeaf8a TT |
1147 | /* If we see a DW_TAG_variant, then this will be set if this is the |
1148 | default branch. */ | |
9c6a1327 TT |
1149 | bool default_branch = false; |
1150 | /* If we see a DW_AT_discr_value, then this will be the discriminant | |
1151 | value. */ | |
1152 | ULONGEST discriminant_value = 0; | |
1153 | /* If we see a DW_AT_discr_list, then this is a pointer to the list | |
1154 | data. */ | |
1155 | struct dwarf_block *discr_list_data = nullptr; | |
1156 | }; | |
1157 | ||
1158 | /* This represents a DW_TAG_variant_part. */ | |
1159 | ||
1160 | struct variant_part_builder | |
1161 | { | |
1162 | /* The offset of the discriminant field. */ | |
1163 | sect_offset discriminant_offset {}; | |
1164 | ||
1165 | /* Variants that are direct children of this variant part. */ | |
1166 | std::vector<variant_field> variants; | |
1167 | ||
1168 | /* True if we're currently reading a variant. */ | |
1169 | bool processing_variant = false; | |
2ddeaf8a TT |
1170 | }; |
1171 | ||
52059ffd TT |
1172 | struct nextfield |
1173 | { | |
be2daae6 TT |
1174 | int accessibility = 0; |
1175 | int virtuality = 0; | |
9c6a1327 TT |
1176 | /* Variant parts need to find the discriminant, which is a DIE |
1177 | reference. We track the section offset of each field to make | |
1178 | this link. */ | |
1179 | sect_offset offset; | |
be2daae6 | 1180 | struct field field {}; |
52059ffd TT |
1181 | }; |
1182 | ||
1183 | struct fnfieldlist | |
1184 | { | |
be2daae6 TT |
1185 | const char *name = nullptr; |
1186 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1187 | }; |
1188 | ||
c906108c SS |
1189 | /* The routines that read and process dies for a C struct or C++ class |
1190 | pass lists of data member fields and lists of member function fields | |
1191 | in an instance of a field_info structure, as defined below. */ | |
1192 | struct field_info | |
2de01bdb SM |
1193 | { |
1194 | /* List of data member and baseclasses fields. */ | |
1195 | std::vector<struct nextfield> fields; | |
1196 | std::vector<struct nextfield> baseclasses; | |
1197 | ||
1198 | /* Set if the accessibility of one of the fields is not public. */ | |
264fc0e2 | 1199 | bool non_public_fields = false; |
2de01bdb SM |
1200 | |
1201 | /* Member function fieldlist array, contains name of possibly overloaded | |
1202 | member function, number of overloaded member functions and a pointer | |
1203 | to the head of the member function field chain. */ | |
1204 | std::vector<struct fnfieldlist> fnfieldlists; | |
1205 | ||
1206 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1207 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1208 | std::vector<struct decl_field> typedef_field_list; | |
1209 | ||
1210 | /* Nested types defined by this class and the number of elements in this | |
1211 | list. */ | |
1212 | std::vector<struct decl_field> nested_types_list; | |
1213 | ||
1214 | /* If non-null, this is the variant part we are currently | |
1215 | reading. */ | |
1216 | variant_part_builder *current_variant_part = nullptr; | |
1217 | /* This holds all the top-level variant parts attached to the type | |
1218 | we're reading. */ | |
1219 | std::vector<variant_part_builder> variant_parts; | |
1220 | ||
1221 | /* Return the total number of fields (including baseclasses). */ | |
1222 | int nfields () const | |
c5aa993b | 1223 | { |
2de01bdb SM |
1224 | return fields.size () + baseclasses.size (); |
1225 | } | |
1226 | }; | |
c906108c | 1227 | |
ae038cb0 DJ |
1228 | /* Loaded secondary compilation units are kept in memory until they |
1229 | have not been referenced for the processing of this many | |
1230 | compilation units. Set this to zero to disable caching. Cache | |
1231 | sizes of up to at least twenty will improve startup time for | |
1232 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1233 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1234 | static void |
b4f54984 DE |
1235 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1236 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1237 | { |
3e43a32a | 1238 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1239 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1240 | value); |
1241 | } | |
4390d890 | 1242 | \f |
c906108c SS |
1243 | /* local function prototypes */ |
1244 | ||
918dd910 JK |
1245 | static void dwarf2_find_base_address (struct die_info *die, |
1246 | struct dwarf2_cu *cu); | |
1247 | ||
891813be | 1248 | static dwarf2_psymtab *create_partial_symtab |
7aa104c4 SM |
1249 | (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
1250 | const char *name); | |
0018ea6f | 1251 | |
f1902523 JK |
1252 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1253 | const gdb_byte *info_ptr, | |
3e225074 | 1254 | struct die_info *type_unit_die); |
f1902523 | 1255 | |
976ca316 | 1256 | static void dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile); |
c906108c | 1257 | |
72bf9492 DJ |
1258 | static void scan_partial_symbols (struct partial_die_info *, |
1259 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1260 | int, struct dwarf2_cu *); |
c906108c | 1261 | |
72bf9492 DJ |
1262 | static void add_partial_symbol (struct partial_die_info *, |
1263 | struct dwarf2_cu *); | |
63d06c5c | 1264 | |
72bf9492 DJ |
1265 | static void add_partial_namespace (struct partial_die_info *pdi, |
1266 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1267 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1268 | |
5d7cb8df | 1269 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1270 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1271 | struct dwarf2_cu *cu); |
1272 | ||
72bf9492 DJ |
1273 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1274 | struct dwarf2_cu *cu); | |
91c24f0a | 1275 | |
bc30ff58 JB |
1276 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1277 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1278 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1279 | |
d521ce57 | 1280 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1281 | |
dee91e82 | 1282 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1283 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1284 | |
fb816e8b TV |
1285 | /* A pair of partial_die_info and compilation unit. */ |
1286 | struct cu_partial_die_info | |
1287 | { | |
1288 | /* The compilation unit of the partial_die_info. */ | |
1289 | struct dwarf2_cu *cu; | |
1290 | /* A partial_die_info. */ | |
1291 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1292 | |
1293 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1294 | : cu (cu), | |
1295 | pdi (pdi) | |
405feb71 | 1296 | { /* Nothing. */ } |
122cf0f2 AB |
1297 | |
1298 | private: | |
1299 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1300 | }; |
1301 | ||
122cf0f2 AB |
1302 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1303 | struct dwarf2_cu *); | |
72bf9492 | 1304 | |
d521ce57 TT |
1305 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1306 | struct attribute *, struct attr_abbrev *, | |
7a5f294d | 1307 | const gdb_byte *); |
18a8505e AT |
1308 | |
1309 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 1310 | struct attribute *attr, dwarf_tag tag); |
18a8505e AT |
1311 | |
1312 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1313 | |
976ca316 SM |
1314 | static sect_offset read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
1315 | dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1316 | |
ed2dc618 | 1317 | static const char *read_indirect_string |
976ca316 | 1318 | (dwarf2_per_objfile *per_objfile, bfd *, const gdb_byte *, |
ed2dc618 | 1319 | const struct comp_unit_head *, unsigned int *); |
4bdf3d34 | 1320 | |
ed2dc618 | 1321 | static const char *read_indirect_string_at_offset |
976ca316 | 1322 | (dwarf2_per_objfile *per_objfile, LONGEST str_offset); |
927aa2e7 | 1323 | |
d521ce57 TT |
1324 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1325 | const gdb_byte *, | |
3019eac3 DE |
1326 | unsigned int *); |
1327 | ||
18a8505e AT |
1328 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1329 | ULONGEST str_index); | |
1330 | ||
1331 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1332 | ULONGEST str_index); | |
3019eac3 | 1333 | |
e142c38c | 1334 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1335 | |
e142c38c DJ |
1336 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1337 | struct dwarf2_cu *); | |
c906108c | 1338 | |
7d45c7c3 KB |
1339 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1340 | struct dwarf2_cu *cu); | |
1341 | ||
a084a2a6 AT |
1342 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1343 | ||
05cf31d1 JB |
1344 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1345 | struct dwarf2_cu *cu); | |
1346 | ||
e142c38c | 1347 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1348 | |
e142c38c | 1349 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1350 | struct dwarf2_cu **); |
63d06c5c | 1351 | |
9c541725 | 1352 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1353 | struct dwarf2_cu *cu); |
debd256d | 1354 | |
f3f5162e | 1355 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1356 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1357 | CORE_ADDR, int decode_mapping); |
c906108c | 1358 | |
804d2729 TT |
1359 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1360 | const char *); | |
c906108c | 1361 | |
a14ed312 | 1362 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1363 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1364 | |
ff39bb5e | 1365 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1366 | struct dwarf2_cu *); |
c906108c | 1367 | |
ff39bb5e | 1368 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1369 | struct type *type, |
1370 | const char *name, | |
1371 | struct obstack *obstack, | |
12df843f | 1372 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1373 | const gdb_byte **bytes, |
98bfdba5 | 1374 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1375 | |
e7c27a73 | 1376 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1377 | |
b4ba55a1 JB |
1378 | static int need_gnat_info (struct dwarf2_cu *); |
1379 | ||
3e43a32a MS |
1380 | static struct type *die_descriptive_type (struct die_info *, |
1381 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1382 | |
1383 | static void set_descriptive_type (struct type *, struct die_info *, | |
1384 | struct dwarf2_cu *); | |
1385 | ||
e7c27a73 DJ |
1386 | static struct type *die_containing_type (struct die_info *, |
1387 | struct dwarf2_cu *); | |
c906108c | 1388 | |
ff39bb5e | 1389 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1390 | struct dwarf2_cu *); |
c906108c | 1391 | |
f792889a | 1392 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1393 | |
673bfd45 DE |
1394 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1395 | ||
0d5cff50 | 1396 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1397 | |
6e70227d | 1398 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1399 | const char *suffix, int physname, |
1400 | struct dwarf2_cu *cu); | |
63d06c5c | 1401 | |
e7c27a73 | 1402 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1403 | |
348e048f DE |
1404 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1405 | ||
e7c27a73 | 1406 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1407 | |
e7c27a73 | 1408 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1409 | |
96408a79 SA |
1410 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1411 | ||
71a3c369 TT |
1412 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1413 | ||
41144253 | 1414 | /* Return the .debug_loclists section to use for cu. */ |
1415 | static struct dwarf2_section_info *cu_debug_loc_section (struct dwarf2_cu *cu); | |
1416 | ||
d0ce17d8 CT |
1417 | /* Return the .debug_rnglists section to use for cu. */ |
1418 | static struct dwarf2_section_info *cu_debug_rnglists_section | |
1419 | (struct dwarf2_cu *cu, dwarf_tag tag); | |
1420 | ||
3a2b436a | 1421 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1422 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1423 | enum pc_bounds_kind |
1424 | { | |
e385593e | 1425 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1426 | PC_BOUNDS_NOT_PRESENT, |
1427 | ||
e385593e JK |
1428 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1429 | were present but they do not form a valid range of PC addresses. */ | |
1430 | PC_BOUNDS_INVALID, | |
1431 | ||
3a2b436a JK |
1432 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1433 | PC_BOUNDS_RANGES, | |
1434 | ||
1435 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1436 | PC_BOUNDS_HIGH_LOW, | |
1437 | }; | |
1438 | ||
1439 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1440 | CORE_ADDR *, CORE_ADDR *, | |
1441 | struct dwarf2_cu *, | |
891813be | 1442 | dwarf2_psymtab *); |
c906108c | 1443 | |
fae299cd DC |
1444 | static void get_scope_pc_bounds (struct die_info *, |
1445 | CORE_ADDR *, CORE_ADDR *, | |
1446 | struct dwarf2_cu *); | |
1447 | ||
801e3a5b JB |
1448 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1449 | CORE_ADDR, struct dwarf2_cu *); | |
1450 | ||
a14ed312 | 1451 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1452 | struct dwarf2_cu *); |
c906108c | 1453 | |
a14ed312 | 1454 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1455 | struct type *, struct dwarf2_cu *); |
c906108c | 1456 | |
a14ed312 | 1457 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1458 | struct die_info *, struct type *, |
e7c27a73 | 1459 | struct dwarf2_cu *); |
c906108c | 1460 | |
a14ed312 | 1461 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1462 | struct type *, |
1463 | struct dwarf2_cu *); | |
c906108c | 1464 | |
134d01f1 | 1465 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1466 | |
e7c27a73 | 1467 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1468 | |
e7c27a73 | 1469 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1470 | |
5d7cb8df JK |
1471 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1472 | ||
804d2729 | 1473 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1474 | |
27aa8d6a SW |
1475 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1476 | ||
74921315 KS |
1477 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1478 | ||
f55ee35c JK |
1479 | static struct type *read_module_type (struct die_info *die, |
1480 | struct dwarf2_cu *cu); | |
1481 | ||
38d518c9 | 1482 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1483 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1484 | |
134d01f1 | 1485 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1486 | |
7d79de9a TT |
1487 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *, |
1488 | bool * = nullptr); | |
c906108c | 1489 | |
6e70227d | 1490 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1491 | struct dwarf2_cu *); |
1492 | ||
bf6af496 | 1493 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1494 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1495 | struct die_info *); |
639d11d3 | 1496 | |
dee91e82 | 1497 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1498 | const gdb_byte *info_ptr, |
1499 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1500 | struct die_info *parent); |
1501 | ||
d521ce57 TT |
1502 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1503 | struct die_info **, const gdb_byte *, | |
3e225074 | 1504 | int); |
3019eac3 | 1505 | |
d521ce57 | 1506 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1507 | struct die_info **, const gdb_byte *); |
93311388 | 1508 | |
e7c27a73 | 1509 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1510 | |
15d034d0 | 1511 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
be1e3d3e | 1512 | struct objfile *); |
71c25dea | 1513 | |
15d034d0 | 1514 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1515 | |
15d034d0 | 1516 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1517 | struct die_info *die, |
1518 | struct dwarf2_cu *cu); | |
1519 | ||
ca69b9e6 DE |
1520 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1521 | struct dwarf2_cu *cu); | |
1522 | ||
e142c38c | 1523 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1524 | struct dwarf2_cu **); |
9219021c | 1525 | |
d97bc12b DE |
1526 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1527 | ||
1528 | static void dump_die_for_error (struct die_info *); | |
1529 | ||
1530 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1531 | struct die_info *); | |
c906108c | 1532 | |
d97bc12b | 1533 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1534 | |
51545339 | 1535 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1536 | struct dwarf2_cu *); |
c906108c | 1537 | |
348e048f | 1538 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1539 | const struct attribute *, |
348e048f DE |
1540 | struct dwarf2_cu **); |
1541 | ||
10b3939b | 1542 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1543 | const struct attribute *, |
f2f0e013 | 1544 | struct dwarf2_cu **); |
c906108c | 1545 | |
348e048f | 1546 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1547 | const struct attribute *, |
348e048f DE |
1548 | struct dwarf2_cu **); |
1549 | ||
ac9ec31b DE |
1550 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1551 | struct dwarf2_cu *); | |
1552 | ||
1553 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1554 | const struct attribute *, |
ac9ec31b DE |
1555 | struct dwarf2_cu *); |
1556 | ||
ab432490 SM |
1557 | static void load_full_type_unit (dwarf2_per_cu_data *per_cu, |
1558 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1559 | |
ab432490 SM |
1560 | static void read_signatured_type (signatured_type *sig_type, |
1561 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1562 | |
63e43d3a PMR |
1563 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1564 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1565 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1566 | |
c906108c SS |
1567 | /* memory allocation interface */ |
1568 | ||
7b5a2f43 | 1569 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1570 | |
b60c80d6 | 1571 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1572 | |
43f3e411 | 1573 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1574 | |
8cf6f0b1 TT |
1575 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1576 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1577 | const struct attribute *attr); |
8cf6f0b1 | 1578 | |
ff39bb5e | 1579 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1580 | struct symbol *sym, |
f1e6e072 TT |
1581 | struct dwarf2_cu *cu, |
1582 | int is_block); | |
4c2df51b | 1583 | |
d521ce57 TT |
1584 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1585 | const gdb_byte *info_ptr, | |
1586 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1587 | |
72bf9492 DJ |
1588 | static hashval_t partial_die_hash (const void *item); |
1589 | ||
1590 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1591 | ||
ae038cb0 | 1592 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 | 1593 | (sect_offset sect_off, unsigned int offset_in_dwz, |
976ca316 | 1594 | dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1595 | |
9816fde3 | 1596 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1597 | struct die_info *comp_unit_die, |
1598 | enum language pretend_language); | |
93311388 | 1599 | |
f792889a DJ |
1600 | static struct type *set_die_type (struct die_info *, struct type *, |
1601 | struct dwarf2_cu *); | |
1c379e20 | 1602 | |
976ca316 | 1603 | static void create_all_comp_units (dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1604 | |
976ca316 | 1605 | static int create_all_type_units (dwarf2_per_objfile *per_objfile); |
1fd400ff | 1606 | |
ab432490 SM |
1607 | static void load_full_comp_unit (dwarf2_per_cu_data *per_cu, |
1608 | dwarf2_per_objfile *per_objfile, | |
1609 | bool skip_partial, | |
1610 | enum language pretend_language); | |
10b3939b | 1611 | |
8fc0b21d | 1612 | static void process_full_comp_unit (dwarf2_cu *cu, |
47b14e86 | 1613 | enum language pretend_language); |
10b3939b | 1614 | |
8fc0b21d | 1615 | static void process_full_type_unit (dwarf2_cu *cu, |
47b14e86 | 1616 | enum language pretend_language); |
f4dc4d17 | 1617 | |
10b3939b DJ |
1618 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1619 | struct dwarf2_per_cu_data *); | |
1620 | ||
ae038cb0 DJ |
1621 | static void dwarf2_mark (struct dwarf2_cu *); |
1622 | ||
b64f50a1 | 1623 | static struct type *get_die_type_at_offset (sect_offset, |
aa66c379 SM |
1624 | dwarf2_per_cu_data *per_cu, |
1625 | dwarf2_per_objfile *per_objfile); | |
673bfd45 | 1626 | |
f792889a | 1627 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1628 | |
120ce1b5 SM |
1629 | static void queue_comp_unit (dwarf2_per_cu_data *per_cu, |
1630 | dwarf2_per_objfile *per_objfile, | |
95554aad TT |
1631 | enum language pretend_language); |
1632 | ||
976ca316 | 1633 | static void process_queue (dwarf2_per_objfile *per_objfile); |
9291a0cd | 1634 | |
b303c6f6 AB |
1635 | /* Class, the destructor of which frees all allocated queue entries. This |
1636 | will only have work to do if an error was thrown while processing the | |
1637 | dwarf. If no error was thrown then the queue entries should have all | |
1638 | been processed, and freed, as we went along. */ | |
1639 | ||
1640 | class dwarf2_queue_guard | |
1641 | { | |
1642 | public: | |
39856def TT |
1643 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1644 | : m_per_objfile (per_objfile) | |
1645 | { | |
1646 | } | |
b303c6f6 AB |
1647 | |
1648 | /* Free any entries remaining on the queue. There should only be | |
1649 | entries left if we hit an error while processing the dwarf. */ | |
1650 | ~dwarf2_queue_guard () | |
1651 | { | |
39856def TT |
1652 | /* Ensure that no memory is allocated by the queue. */ |
1653 | std::queue<dwarf2_queue_item> empty; | |
5989a64e | 1654 | std::swap (m_per_objfile->per_bfd->queue, empty); |
39856def | 1655 | } |
b303c6f6 | 1656 | |
39856def | 1657 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1658 | |
39856def TT |
1659 | private: |
1660 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1661 | }; |
1662 | ||
39856def TT |
1663 | dwarf2_queue_item::~dwarf2_queue_item () |
1664 | { | |
1665 | /* Anything still marked queued is likely to be in an | |
1666 | inconsistent state, so discard it. */ | |
1667 | if (per_cu->queued) | |
1668 | { | |
7188ed02 | 1669 | per_objfile->remove_cu (per_cu); |
39856def TT |
1670 | per_cu->queued = 0; |
1671 | } | |
1672 | } | |
1673 | ||
d721ba37 PA |
1674 | /* The return type of find_file_and_directory. Note, the enclosed |
1675 | string pointers are only valid while this object is valid. */ | |
1676 | ||
1677 | struct file_and_directory | |
1678 | { | |
1679 | /* The filename. This is never NULL. */ | |
1680 | const char *name; | |
1681 | ||
1682 | /* The compilation directory. NULL if not known. If we needed to | |
1683 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1684 | points directly to the DW_AT_comp_dir string attribute owned by | |
1685 | the obstack that owns the DIE. */ | |
1686 | const char *comp_dir; | |
1687 | ||
1688 | /* If we needed to build a new string for comp_dir, this is what | |
1689 | owns the storage. */ | |
1690 | std::string comp_dir_storage; | |
1691 | }; | |
1692 | ||
1693 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1694 | struct dwarf2_cu *cu); | |
9291a0cd | 1695 | |
298e9637 | 1696 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1697 | |
298e9637 | 1698 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1699 | |
57d63ce2 | 1700 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
976ca316 SM |
1701 | (dwarf2_per_objfile *per_objfile, struct dwp_file *dwp_file, |
1702 | const char *comp_dir, ULONGEST signature, int is_debug_types); | |
a2ce51a0 | 1703 | |
976ca316 | 1704 | static struct dwp_file *get_dwp_file (dwarf2_per_objfile *per_objfile); |
a2ce51a0 | 1705 | |
3019eac3 | 1706 | static struct dwo_unit *lookup_dwo_comp_unit |
4ab09049 SM |
1707 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
1708 | ULONGEST signature); | |
3019eac3 DE |
1709 | |
1710 | static struct dwo_unit *lookup_dwo_type_unit | |
4ab09049 | 1711 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir); |
3019eac3 | 1712 | |
1b555f17 | 1713 | static void queue_and_load_all_dwo_tus (dwarf2_cu *cu); |
89e63ee4 | 1714 | |
263db9a1 TT |
1715 | /* A unique pointer to a dwo_file. */ |
1716 | ||
51ac9db5 | 1717 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1718 | |
976ca316 | 1719 | static void process_cu_includes (dwarf2_per_objfile *per_objfile); |
95554aad | 1720 | |
1b80a9fa | 1721 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1722 | |
1723 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1724 | \f |
1725 | /* Various complaints about symbol reading that don't abort the process. */ | |
1726 | ||
4390d890 DE |
1727 | static void |
1728 | dwarf2_debug_line_missing_file_complaint (void) | |
1729 | { | |
b98664d3 | 1730 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1731 | } |
1732 | ||
1733 | static void | |
1734 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1735 | { | |
b98664d3 | 1736 | complaint (_(".debug_line section has line " |
4390d890 DE |
1737 | "program sequence without an end")); |
1738 | } | |
1739 | ||
1740 | static void | |
1741 | dwarf2_complex_location_expr_complaint (void) | |
1742 | { | |
b98664d3 | 1743 | complaint (_("location expression too complex")); |
4390d890 DE |
1744 | } |
1745 | ||
1746 | static void | |
1747 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1748 | int arg3) | |
1749 | { | |
b98664d3 | 1750 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1751 | arg1, arg2, arg3); |
1752 | } | |
1753 | ||
4390d890 DE |
1754 | static void |
1755 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1756 | { | |
b98664d3 | 1757 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1758 | arg1, arg2); |
1759 | } | |
527f3840 JK |
1760 | |
1761 | /* Hash function for line_header_hash. */ | |
1762 | ||
1763 | static hashval_t | |
1764 | line_header_hash (const struct line_header *ofs) | |
1765 | { | |
9c541725 | 1766 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1767 | } |
1768 | ||
1769 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1770 | ||
1771 | static hashval_t | |
1772 | line_header_hash_voidp (const void *item) | |
1773 | { | |
9a3c8263 | 1774 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1775 | |
1776 | return line_header_hash (ofs); | |
1777 | } | |
1778 | ||
1779 | /* Equality function for line_header_hash. */ | |
1780 | ||
1781 | static int | |
1782 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1783 | { | |
9a3c8263 SM |
1784 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1785 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1786 | |
9c541725 | 1787 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1788 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1789 | } | |
1790 | ||
4390d890 | 1791 | \f |
9291a0cd | 1792 | |
330cdd98 PA |
1793 | /* See declaration. */ |
1794 | ||
5989a64e SM |
1795 | dwarf2_per_bfd::dwarf2_per_bfd (bfd *obfd, const dwarf2_debug_sections *names, |
1796 | bool can_copy_) | |
c3699833 SM |
1797 | : obfd (obfd), |
1798 | can_copy (can_copy_) | |
330cdd98 PA |
1799 | { |
1800 | if (names == NULL) | |
1801 | names = &dwarf2_elf_names; | |
1802 | ||
330cdd98 PA |
1803 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) |
1804 | locate_sections (obfd, sec, *names); | |
1805 | } | |
1806 | ||
5989a64e | 1807 | dwarf2_per_bfd::~dwarf2_per_bfd () |
330cdd98 | 1808 | { |
b76e467d | 1809 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 1810 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1811 | |
b2bdb8cf | 1812 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 1813 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 1814 | |
5989a64e | 1815 | /* Everything else should be on this->obstack. */ |
330cdd98 PA |
1816 | } |
1817 | ||
7188ed02 | 1818 | /* See read.h. */ |
330cdd98 PA |
1819 | |
1820 | void | |
7188ed02 | 1821 | dwarf2_per_objfile::remove_all_cus () |
330cdd98 | 1822 | { |
7188ed02 SM |
1823 | for (auto pair : m_dwarf2_cus) |
1824 | delete pair.second; | |
330cdd98 | 1825 | |
7188ed02 | 1826 | m_dwarf2_cus.clear (); |
330cdd98 PA |
1827 | } |
1828 | ||
11ed8cad TT |
1829 | /* A helper class that calls free_cached_comp_units on |
1830 | destruction. */ | |
1831 | ||
1832 | class free_cached_comp_units | |
1833 | { | |
1834 | public: | |
1835 | ||
1836 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1837 | : m_per_objfile (per_objfile) | |
1838 | { | |
1839 | } | |
1840 | ||
1841 | ~free_cached_comp_units () | |
1842 | { | |
7188ed02 | 1843 | m_per_objfile->remove_all_cus (); |
11ed8cad TT |
1844 | } |
1845 | ||
1846 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1847 | ||
1848 | private: | |
1849 | ||
1850 | dwarf2_per_objfile *m_per_objfile; | |
1851 | }; | |
1852 | ||
af758d11 SM |
1853 | /* See read.h. */ |
1854 | ||
1855 | bool | |
1856 | dwarf2_per_objfile::symtab_set_p (const dwarf2_per_cu_data *per_cu) const | |
1857 | { | |
1858 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1859 | ||
1860 | return this->m_symtabs[per_cu->index] != nullptr; | |
1861 | } | |
1862 | ||
1863 | /* See read.h. */ | |
1864 | ||
1865 | compunit_symtab * | |
1866 | dwarf2_per_objfile::get_symtab (const dwarf2_per_cu_data *per_cu) const | |
1867 | { | |
1868 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1869 | ||
1870 | return this->m_symtabs[per_cu->index]; | |
1871 | } | |
1872 | ||
1873 | /* See read.h. */ | |
1874 | ||
1875 | void | |
1876 | dwarf2_per_objfile::set_symtab (const dwarf2_per_cu_data *per_cu, | |
1877 | compunit_symtab *symtab) | |
1878 | { | |
1879 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1880 | gdb_assert (this->m_symtabs[per_cu->index] == nullptr); | |
1881 | ||
1882 | this->m_symtabs[per_cu->index] = symtab; | |
1883 | } | |
1884 | ||
c906108c | 1885 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1886 | information and return true if we have enough to do something. |
1887 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1888 | ELF names are used. CAN_COPY is true for formats where symbol |
1889 | interposition is possible and so symbol values must follow copy | |
1890 | relocation rules. */ | |
c906108c SS |
1891 | |
1892 | int | |
251d32d9 | 1893 | dwarf2_has_info (struct objfile *objfile, |
4b610737 TT |
1894 | const struct dwarf2_debug_sections *names, |
1895 | bool can_copy) | |
c906108c | 1896 | { |
97cbe998 SDJ |
1897 | if (objfile->flags & OBJF_READNEVER) |
1898 | return 0; | |
1899 | ||
976ca316 | 1900 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 1901 | |
976ca316 | 1902 | if (per_objfile == NULL) |
5989a64e | 1903 | { |
17ee85fc TT |
1904 | dwarf2_per_bfd *per_bfd; |
1905 | ||
1906 | /* We can share a "dwarf2_per_bfd" with other objfiles if the BFD | |
1907 | doesn't require relocations and if there aren't partial symbols | |
1908 | from some other reader. */ | |
1909 | if (!objfile_has_partial_symbols (objfile) | |
1910 | && !gdb_bfd_requires_relocations (objfile->obfd)) | |
1911 | { | |
1912 | /* See if one has been created for this BFD yet. */ | |
1913 | per_bfd = dwarf2_per_bfd_bfd_data_key.get (objfile->obfd); | |
1914 | ||
1915 | if (per_bfd == nullptr) | |
1916 | { | |
1917 | /* No, create it now. */ | |
1918 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
1919 | dwarf2_per_bfd_bfd_data_key.set (objfile->obfd, per_bfd); | |
1920 | } | |
1921 | } | |
1922 | else | |
1923 | { | |
1924 | /* No sharing possible, create one specifically for this objfile. */ | |
1925 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
1926 | dwarf2_per_bfd_objfile_data_key.set (objfile, per_bfd); | |
1927 | } | |
5989a64e | 1928 | |
976ca316 | 1929 | per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, per_bfd); |
5989a64e | 1930 | } |
5bfd760d | 1931 | |
976ca316 SM |
1932 | return (!per_objfile->per_bfd->info.is_virtual |
1933 | && per_objfile->per_bfd->info.s.section != NULL | |
1934 | && !per_objfile->per_bfd->abbrev.is_virtual | |
1935 | && per_objfile->per_bfd->abbrev.s.section != NULL); | |
73869dc2 DE |
1936 | } |
1937 | ||
251d32d9 TG |
1938 | /* When loading sections, we look either for uncompressed section or for |
1939 | compressed section names. */ | |
233a11ab CS |
1940 | |
1941 | static int | |
251d32d9 TG |
1942 | section_is_p (const char *section_name, |
1943 | const struct dwarf2_section_names *names) | |
233a11ab | 1944 | { |
251d32d9 TG |
1945 | if (names->normal != NULL |
1946 | && strcmp (section_name, names->normal) == 0) | |
1947 | return 1; | |
1948 | if (names->compressed != NULL | |
1949 | && strcmp (section_name, names->compressed) == 0) | |
1950 | return 1; | |
1951 | return 0; | |
233a11ab CS |
1952 | } |
1953 | ||
330cdd98 | 1954 | /* See declaration. */ |
c906108c | 1955 | |
330cdd98 | 1956 | void |
5989a64e SM |
1957 | dwarf2_per_bfd::locate_sections (bfd *abfd, asection *sectp, |
1958 | const dwarf2_debug_sections &names) | |
c906108c | 1959 | { |
fd361982 | 1960 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 1961 | |
dc7650b8 JK |
1962 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1963 | { | |
1964 | } | |
950b7495 KS |
1965 | else if (elf_section_data (sectp)->this_hdr.sh_size |
1966 | > bfd_get_file_size (abfd)) | |
1967 | { | |
1968 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
1969 | warning (_("Discarding section %s which has a section size (%s" | |
1970 | ") larger than the file size [in module %s]"), | |
1971 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
1972 | bfd_get_filename (abfd)); | |
1973 | } | |
330cdd98 | 1974 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 1975 | { |
330cdd98 | 1976 | this->info.s.section = sectp; |
fd361982 | 1977 | this->info.size = bfd_section_size (sectp); |
c906108c | 1978 | } |
330cdd98 | 1979 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 1980 | { |
330cdd98 | 1981 | this->abbrev.s.section = sectp; |
fd361982 | 1982 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 1983 | } |
330cdd98 | 1984 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 1985 | { |
330cdd98 | 1986 | this->line.s.section = sectp; |
fd361982 | 1987 | this->line.size = bfd_section_size (sectp); |
c906108c | 1988 | } |
330cdd98 | 1989 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 1990 | { |
330cdd98 | 1991 | this->loc.s.section = sectp; |
fd361982 | 1992 | this->loc.size = bfd_section_size (sectp); |
c906108c | 1993 | } |
330cdd98 | 1994 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 1995 | { |
330cdd98 | 1996 | this->loclists.s.section = sectp; |
fd361982 | 1997 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 1998 | } |
330cdd98 | 1999 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2000 | { |
330cdd98 | 2001 | this->macinfo.s.section = sectp; |
fd361982 | 2002 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 2003 | } |
330cdd98 | 2004 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2005 | { |
330cdd98 | 2006 | this->macro.s.section = sectp; |
fd361982 | 2007 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 2008 | } |
330cdd98 | 2009 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2010 | { |
330cdd98 | 2011 | this->str.s.section = sectp; |
fd361982 | 2012 | this->str.size = bfd_section_size (sectp); |
c906108c | 2013 | } |
18a8505e AT |
2014 | else if (section_is_p (sectp->name, &names.str_offsets)) |
2015 | { | |
2016 | this->str_offsets.s.section = sectp; | |
2017 | this->str_offsets.size = bfd_section_size (sectp); | |
2018 | } | |
330cdd98 | 2019 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2020 | { |
330cdd98 | 2021 | this->line_str.s.section = sectp; |
fd361982 | 2022 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 2023 | } |
330cdd98 | 2024 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2025 | { |
330cdd98 | 2026 | this->addr.s.section = sectp; |
fd361982 | 2027 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 2028 | } |
330cdd98 | 2029 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2030 | { |
330cdd98 | 2031 | this->frame.s.section = sectp; |
fd361982 | 2032 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 2033 | } |
330cdd98 | 2034 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2035 | { |
330cdd98 | 2036 | this->eh_frame.s.section = sectp; |
fd361982 | 2037 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 2038 | } |
330cdd98 | 2039 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2040 | { |
330cdd98 | 2041 | this->ranges.s.section = sectp; |
fd361982 | 2042 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 2043 | } |
330cdd98 | 2044 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2045 | { |
330cdd98 | 2046 | this->rnglists.s.section = sectp; |
fd361982 | 2047 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 2048 | } |
330cdd98 | 2049 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2050 | { |
8b70b953 TT |
2051 | struct dwarf2_section_info type_section; |
2052 | ||
2053 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2054 | type_section.s.section = sectp; |
fd361982 | 2055 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2056 | |
fd5866f6 | 2057 | this->types.push_back (type_section); |
348e048f | 2058 | } |
330cdd98 | 2059 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2060 | { |
330cdd98 | 2061 | this->gdb_index.s.section = sectp; |
fd361982 | 2062 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2063 | } |
927aa2e7 JK |
2064 | else if (section_is_p (sectp->name, &names.debug_names)) |
2065 | { | |
2066 | this->debug_names.s.section = sectp; | |
fd361982 | 2067 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
2068 | } |
2069 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2070 | { | |
2071 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2072 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2073 | } |
dce234bc | 2074 | |
fd361982 AM |
2075 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2076 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2077 | this->has_section_at_zero = true; |
c906108c SS |
2078 | } |
2079 | ||
dce234bc | 2080 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2081 | SECTION_NAME. */ |
af34e669 | 2082 | |
dce234bc | 2083 | void |
3017a003 TG |
2084 | dwarf2_get_section_info (struct objfile *objfile, |
2085 | enum dwarf2_section_enum sect, | |
d521ce57 | 2086 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2087 | bfd_size_type *sizep) |
2088 | { | |
976ca316 | 2089 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
dce234bc | 2090 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2091 | |
2092 | /* We may see an objfile without any DWARF, in which case we just | |
2093 | return nothing. */ | |
976ca316 | 2094 | if (per_objfile == NULL) |
a3b2a86b TT |
2095 | { |
2096 | *sectp = NULL; | |
2097 | *bufp = NULL; | |
2098 | *sizep = 0; | |
2099 | return; | |
2100 | } | |
3017a003 TG |
2101 | switch (sect) |
2102 | { | |
2103 | case DWARF2_DEBUG_FRAME: | |
976ca316 | 2104 | info = &per_objfile->per_bfd->frame; |
3017a003 TG |
2105 | break; |
2106 | case DWARF2_EH_FRAME: | |
976ca316 | 2107 | info = &per_objfile->per_bfd->eh_frame; |
3017a003 TG |
2108 | break; |
2109 | default: | |
2110 | gdb_assert_not_reached ("unexpected section"); | |
2111 | } | |
dce234bc | 2112 | |
96b79293 | 2113 | info->read (objfile); |
dce234bc | 2114 | |
96b79293 | 2115 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2116 | *bufp = info->buffer; |
2117 | *sizep = info->size; | |
2118 | } | |
2119 | ||
36586728 TT |
2120 | /* A helper function to find the sections for a .dwz file. */ |
2121 | ||
2122 | static void | |
5bb6e9dd | 2123 | locate_dwz_sections (bfd *abfd, asection *sectp, dwz_file *dwz_file) |
36586728 | 2124 | { |
36586728 TT |
2125 | /* Note that we only support the standard ELF names, because .dwz |
2126 | is ELF-only (at the time of writing). */ | |
2127 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2128 | { | |
049412e3 | 2129 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2130 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2131 | } |
2132 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2133 | { | |
049412e3 | 2134 | dwz_file->info.s.section = sectp; |
fd361982 | 2135 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2136 | } |
2137 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2138 | { | |
049412e3 | 2139 | dwz_file->str.s.section = sectp; |
fd361982 | 2140 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2141 | } |
2142 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2143 | { | |
049412e3 | 2144 | dwz_file->line.s.section = sectp; |
fd361982 | 2145 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2146 | } |
2147 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2148 | { | |
049412e3 | 2149 | dwz_file->macro.s.section = sectp; |
fd361982 | 2150 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2151 | } |
2ec9a5e0 TT |
2152 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2153 | { | |
049412e3 | 2154 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2155 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2156 | } |
927aa2e7 JK |
2157 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2158 | { | |
2159 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2160 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2161 | } |
36586728 TT |
2162 | } |
2163 | ||
c4973306 | 2164 | /* See dwarf2read.h. */ |
36586728 | 2165 | |
c4973306 | 2166 | struct dwz_file * |
c3699833 | 2167 | dwarf2_get_dwz_file (dwarf2_per_bfd *per_bfd) |
36586728 | 2168 | { |
36586728 | 2169 | const char *filename; |
acd13123 | 2170 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2171 | size_t buildid_len; |
2172 | bfd_byte *buildid; | |
36586728 | 2173 | |
c3699833 SM |
2174 | if (per_bfd->dwz_file != NULL) |
2175 | return per_bfd->dwz_file.get (); | |
36586728 | 2176 | |
4db1a1dc | 2177 | bfd_set_error (bfd_error_no_error); |
791afaa2 | 2178 | gdb::unique_xmalloc_ptr<char> data |
c3699833 | 2179 | (bfd_get_alt_debug_link_info (per_bfd->obfd, |
791afaa2 | 2180 | &buildid_len_arg, &buildid)); |
4db1a1dc TT |
2181 | if (data == NULL) |
2182 | { | |
2183 | if (bfd_get_error () == bfd_error_no_error) | |
2184 | return NULL; | |
2185 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2186 | bfd_errmsg (bfd_get_error ())); | |
2187 | } | |
791afaa2 TT |
2188 | |
2189 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2190 | |
acd13123 TT |
2191 | buildid_len = (size_t) buildid_len_arg; |
2192 | ||
791afaa2 | 2193 | filename = data.get (); |
d721ba37 PA |
2194 | |
2195 | std::string abs_storage; | |
36586728 TT |
2196 | if (!IS_ABSOLUTE_PATH (filename)) |
2197 | { | |
14278e1f | 2198 | gdb::unique_xmalloc_ptr<char> abs |
c3699833 | 2199 | = gdb_realpath (bfd_get_filename (per_bfd->obfd)); |
36586728 | 2200 | |
14278e1f | 2201 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2202 | filename = abs_storage.c_str (); |
36586728 TT |
2203 | } |
2204 | ||
dc294be5 TT |
2205 | /* First try the file name given in the section. If that doesn't |
2206 | work, try to use the build-id instead. */ | |
ad80db5b | 2207 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget)); |
dc294be5 | 2208 | if (dwz_bfd != NULL) |
36586728 | 2209 | { |
192b62ce | 2210 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2211 | dwz_bfd.reset (nullptr); |
36586728 TT |
2212 | } |
2213 | ||
dc294be5 TT |
2214 | if (dwz_bfd == NULL) |
2215 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2216 | ||
0d79cdc4 AM |
2217 | if (dwz_bfd == nullptr) |
2218 | { | |
2219 | gdb::unique_xmalloc_ptr<char> alt_filename; | |
c3699833 | 2220 | const char *origname = bfd_get_filename (per_bfd->obfd); |
0d79cdc4 AM |
2221 | |
2222 | scoped_fd fd (debuginfod_debuginfo_query (buildid, | |
2223 | buildid_len, | |
2224 | origname, | |
2225 | &alt_filename)); | |
2226 | ||
2227 | if (fd.get () >= 0) | |
2228 | { | |
2229 | /* File successfully retrieved from server. */ | |
ad80db5b | 2230 | dwz_bfd = gdb_bfd_open (alt_filename.get (), gnutarget); |
0d79cdc4 AM |
2231 | |
2232 | if (dwz_bfd == nullptr) | |
2233 | warning (_("File \"%s\" from debuginfod cannot be opened as bfd"), | |
2234 | alt_filename.get ()); | |
2235 | else if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) | |
2236 | dwz_bfd.reset (nullptr); | |
2237 | } | |
2238 | } | |
2239 | ||
dc294be5 TT |
2240 | if (dwz_bfd == NULL) |
2241 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
c3699833 | 2242 | bfd_get_filename (per_bfd->obfd)); |
dc294be5 | 2243 | |
7ff8cb8c TT |
2244 | std::unique_ptr<struct dwz_file> result |
2245 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2246 | |
5bb6e9dd TT |
2247 | for (asection *sec : gdb_bfd_sections (result->dwz_bfd)) |
2248 | locate_dwz_sections (result->dwz_bfd.get (), sec, result.get ()); | |
36586728 | 2249 | |
c3699833 SM |
2250 | gdb_bfd_record_inclusion (per_bfd->obfd, result->dwz_bfd.get ()); |
2251 | per_bfd->dwz_file = std::move (result); | |
2252 | return per_bfd->dwz_file.get (); | |
36586728 | 2253 | } |
9291a0cd | 2254 | \f |
7b9f3c50 DE |
2255 | /* DWARF quick_symbols_functions support. */ |
2256 | ||
2257 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2258 | unique line tables, so we maintain a separate table of all .debug_line | |
2259 | derived entries to support the sharing. | |
2260 | All the quick functions need is the list of file names. We discard the | |
2261 | line_header when we're done and don't need to record it here. */ | |
2262 | struct quick_file_names | |
2263 | { | |
094b34ac DE |
2264 | /* The data used to construct the hash key. */ |
2265 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2266 | |
2267 | /* The number of entries in file_names, real_names. */ | |
2268 | unsigned int num_file_names; | |
2269 | ||
2270 | /* The file names from the line table, after being run through | |
2271 | file_full_name. */ | |
2272 | const char **file_names; | |
2273 | ||
2274 | /* The file names from the line table after being run through | |
2275 | gdb_realpath. These are computed lazily. */ | |
2276 | const char **real_names; | |
2277 | }; | |
2278 | ||
2279 | /* When using the index (and thus not using psymtabs), each CU has an | |
2280 | object of this type. This is used to hold information needed by | |
2281 | the various "quick" methods. */ | |
2282 | struct dwarf2_per_cu_quick_data | |
2283 | { | |
2284 | /* The file table. This can be NULL if there was no file table | |
2285 | or it's currently not read in. | |
5989a64e | 2286 | NOTE: This points into dwarf2_per_objfile->per_bfd->quick_file_names_table. */ |
7b9f3c50 DE |
2287 | struct quick_file_names *file_names; |
2288 | ||
7b9f3c50 DE |
2289 | /* A temporary mark bit used when iterating over all CUs in |
2290 | expand_symtabs_matching. */ | |
2291 | unsigned int mark : 1; | |
2292 | ||
2293 | /* True if we've tried to read the file table and found there isn't one. | |
2294 | There will be no point in trying to read it again next time. */ | |
2295 | unsigned int no_file_data : 1; | |
2296 | }; | |
2297 | ||
094b34ac DE |
2298 | /* Utility hash function for a stmt_list_hash. */ |
2299 | ||
2300 | static hashval_t | |
2301 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2302 | { | |
2303 | hashval_t v = 0; | |
2304 | ||
2305 | if (stmt_list_hash->dwo_unit != NULL) | |
2306 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2307 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2308 | return v; |
2309 | } | |
2310 | ||
2311 | /* Utility equality function for a stmt_list_hash. */ | |
2312 | ||
2313 | static int | |
2314 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2315 | const struct stmt_list_hash *rhs) | |
2316 | { | |
2317 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2318 | return 0; | |
2319 | if (lhs->dwo_unit != NULL | |
2320 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2321 | return 0; | |
2322 | ||
9c541725 | 2323 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2324 | } |
2325 | ||
7b9f3c50 DE |
2326 | /* Hash function for a quick_file_names. */ |
2327 | ||
2328 | static hashval_t | |
2329 | hash_file_name_entry (const void *e) | |
2330 | { | |
9a3c8263 SM |
2331 | const struct quick_file_names *file_data |
2332 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2333 | |
094b34ac | 2334 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2335 | } |
2336 | ||
2337 | /* Equality function for a quick_file_names. */ | |
2338 | ||
2339 | static int | |
2340 | eq_file_name_entry (const void *a, const void *b) | |
2341 | { | |
9a3c8263 SM |
2342 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2343 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2344 | |
094b34ac | 2345 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2346 | } |
2347 | ||
2348 | /* Delete function for a quick_file_names. */ | |
2349 | ||
2350 | static void | |
2351 | delete_file_name_entry (void *e) | |
2352 | { | |
9a3c8263 | 2353 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2354 | int i; |
2355 | ||
2356 | for (i = 0; i < file_data->num_file_names; ++i) | |
2357 | { | |
2358 | xfree ((void*) file_data->file_names[i]); | |
2359 | if (file_data->real_names) | |
2360 | xfree ((void*) file_data->real_names[i]); | |
2361 | } | |
2362 | ||
45940949 TT |
2363 | /* The space for the struct itself lives on the obstack, so we don't |
2364 | free it here. */ | |
7b9f3c50 DE |
2365 | } |
2366 | ||
2367 | /* Create a quick_file_names hash table. */ | |
2368 | ||
5895093f | 2369 | static htab_up |
7b9f3c50 DE |
2370 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2371 | { | |
5895093f TT |
2372 | return htab_up (htab_create_alloc (nr_initial_entries, |
2373 | hash_file_name_entry, eq_file_name_entry, | |
2374 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2375 | } |
9291a0cd | 2376 | |
ab432490 SM |
2377 | /* Read in CU (dwarf2_cu object) for PER_CU in the context of PER_OBJFILE. This |
2378 | function is unrelated to symtabs, symtab would have to be created afterwards. | |
2379 | You should call age_cached_comp_units after processing the CU. */ | |
918dd910 | 2380 | |
1b555f17 | 2381 | static dwarf2_cu * |
ab432490 SM |
2382 | load_cu (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
2383 | bool skip_partial) | |
918dd910 | 2384 | { |
3019eac3 | 2385 | if (per_cu->is_debug_types) |
ab432490 | 2386 | load_full_type_unit (per_cu, per_objfile); |
918dd910 | 2387 | else |
ab432490 | 2388 | load_full_comp_unit (per_cu, per_objfile, skip_partial, language_minimal); |
918dd910 | 2389 | |
7188ed02 SM |
2390 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
2391 | if (cu == nullptr) | |
1b555f17 | 2392 | return nullptr; /* Dummy CU. */ |
2dc860c0 | 2393 | |
7188ed02 | 2394 | dwarf2_find_base_address (cu->dies, cu); |
1b555f17 | 2395 | |
7188ed02 | 2396 | return cu; |
918dd910 JK |
2397 | } |
2398 | ||
97a1449a | 2399 | /* Read in the symbols for PER_CU in the context of DWARF"_PER_OBJFILE. */ |
2fdf6df6 | 2400 | |
9291a0cd | 2401 | static void |
97a1449a | 2402 | dw2_do_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2403 | dwarf2_per_objfile *per_objfile, bool skip_partial) |
9291a0cd | 2404 | { |
f4dc4d17 DE |
2405 | /* Skip type_unit_groups, reading the type units they contain |
2406 | is handled elsewhere. */ | |
197400e8 | 2407 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2408 | return; |
2409 | ||
b303c6f6 AB |
2410 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2411 | the queue. After this point we're guaranteed to leave this function | |
2412 | with the dwarf queue empty. */ | |
39856def | 2413 | dwarf2_queue_guard q_guard (dwarf2_per_objfile); |
9291a0cd | 2414 | |
976ca316 | 2415 | if (!per_objfile->symtab_set_p (per_cu)) |
95554aad | 2416 | { |
976ca316 SM |
2417 | queue_comp_unit (per_cu, per_objfile, language_minimal); |
2418 | dwarf2_cu *cu = load_cu (per_cu, per_objfile, skip_partial); | |
89e63ee4 DE |
2419 | |
2420 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2421 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2422 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2423 | if (!per_cu->is_debug_types | |
1b555f17 SM |
2424 | && cu != NULL |
2425 | && cu->dwo_unit != NULL | |
976ca316 SM |
2426 | && per_objfile->per_bfd->index_table != NULL |
2427 | && per_objfile->per_bfd->index_table->version <= 7 | |
89e63ee4 | 2428 | /* DWP files aren't supported yet. */ |
976ca316 | 2429 | && get_dwp_file (per_objfile) == NULL) |
1b555f17 | 2430 | queue_and_load_all_dwo_tus (cu); |
95554aad | 2431 | } |
9291a0cd | 2432 | |
976ca316 | 2433 | process_queue (per_objfile); |
9291a0cd TT |
2434 | |
2435 | /* Age the cache, releasing compilation units that have not | |
2436 | been used recently. */ | |
976ca316 | 2437 | per_objfile->age_comp_units (); |
9291a0cd TT |
2438 | } |
2439 | ||
97a1449a SM |
2440 | /* Ensure that the symbols for PER_CU have been read in. DWARF2_PER_OBJFILE is |
2441 | the per-objfile for which this symtab is instantiated. | |
2442 | ||
2443 | Returns the resulting symbol table. */ | |
2fdf6df6 | 2444 | |
43f3e411 | 2445 | static struct compunit_symtab * |
97a1449a | 2446 | dw2_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2447 | dwarf2_per_objfile *per_objfile, |
97a1449a | 2448 | bool skip_partial) |
9291a0cd | 2449 | { |
976ca316 | 2450 | gdb_assert (per_objfile->per_bfd->using_index); |
af758d11 | 2451 | |
976ca316 | 2452 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd | 2453 | { |
976ca316 | 2454 | free_cached_comp_units freer (per_objfile); |
c83dd867 | 2455 | scoped_restore decrementer = increment_reading_symtab (); |
976ca316 SM |
2456 | dw2_do_instantiate_symtab (per_cu, per_objfile, skip_partial); |
2457 | process_cu_includes (per_objfile); | |
9291a0cd | 2458 | } |
f194fefb | 2459 | |
976ca316 | 2460 | return per_objfile->get_symtab (per_cu); |
9291a0cd TT |
2461 | } |
2462 | ||
ff4c9fec | 2463 | /* See declaration. */ |
f4dc4d17 | 2464 | |
ff4c9fec | 2465 | dwarf2_per_cu_data * |
5989a64e | 2466 | dwarf2_per_bfd::get_cutu (int index) |
ff4c9fec | 2467 | { |
b76e467d | 2468 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2469 | { |
b76e467d | 2470 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2471 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2472 | return &this->all_type_units[index]->per_cu; |
2473 | } | |
f4dc4d17 | 2474 | |
ff4c9fec SM |
2475 | return this->all_comp_units[index]; |
2476 | } | |
f4dc4d17 | 2477 | |
ff4c9fec | 2478 | /* See declaration. */ |
2fdf6df6 | 2479 | |
ff4c9fec | 2480 | dwarf2_per_cu_data * |
5989a64e | 2481 | dwarf2_per_bfd::get_cu (int index) |
1fd400ff | 2482 | { |
b76e467d | 2483 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2484 | |
ff4c9fec | 2485 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2486 | } |
2487 | ||
ff4c9fec | 2488 | /* See declaration. */ |
f4dc4d17 | 2489 | |
ff4c9fec | 2490 | signatured_type * |
5989a64e | 2491 | dwarf2_per_bfd::get_tu (int index) |
f4dc4d17 | 2492 | { |
b2bdb8cf | 2493 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2494 | |
ff4c9fec | 2495 | return this->all_type_units[index]; |
1fd400ff TT |
2496 | } |
2497 | ||
d3473f0c TT |
2498 | /* See read.h. */ |
2499 | ||
2500 | dwarf2_per_cu_data * | |
5989a64e | 2501 | dwarf2_per_bfd::allocate_per_cu () |
d3473f0c TT |
2502 | { |
2503 | dwarf2_per_cu_data *result = OBSTACK_ZALLOC (&obstack, dwarf2_per_cu_data); | |
1859c670 | 2504 | result->per_bfd = this; |
d3473f0c TT |
2505 | result->index = m_num_psymtabs++; |
2506 | return result; | |
2507 | } | |
2508 | ||
2509 | /* See read.h. */ | |
2510 | ||
2511 | signatured_type * | |
5989a64e | 2512 | dwarf2_per_bfd::allocate_signatured_type () |
d3473f0c TT |
2513 | { |
2514 | signatured_type *result = OBSTACK_ZALLOC (&obstack, signatured_type); | |
1859c670 | 2515 | result->per_cu.per_bfd = this; |
d3473f0c TT |
2516 | result->per_cu.index = m_num_psymtabs++; |
2517 | return result; | |
2518 | } | |
2519 | ||
168c9250 | 2520 | /* Return a new dwarf2_per_cu_data allocated on the per-bfd |
45940949 | 2521 | obstack, and constructed with the specified field values. */ |
4b514bc8 JK |
2522 | |
2523 | static dwarf2_per_cu_data * | |
168c9250 SM |
2524 | create_cu_from_index_list (dwarf2_per_bfd *per_bfd, |
2525 | struct dwarf2_section_info *section, | |
2526 | int is_dwz, | |
2527 | sect_offset sect_off, ULONGEST length) | |
4b514bc8 | 2528 | { |
168c9250 | 2529 | dwarf2_per_cu_data *the_cu = per_bfd->allocate_per_cu (); |
4b514bc8 JK |
2530 | the_cu->sect_off = sect_off; |
2531 | the_cu->length = length; | |
4b514bc8 | 2532 | the_cu->section = section; |
168c9250 | 2533 | the_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 2534 | struct dwarf2_per_cu_quick_data); |
4b514bc8 JK |
2535 | the_cu->is_dwz = is_dwz; |
2536 | return the_cu; | |
2537 | } | |
2538 | ||
2ec9a5e0 TT |
2539 | /* A helper for create_cus_from_index that handles a given list of |
2540 | CUs. */ | |
2fdf6df6 | 2541 | |
74a0d9f6 | 2542 | static void |
168c9250 | 2543 | create_cus_from_index_list (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2544 | const gdb_byte *cu_list, offset_type n_elements, |
2545 | struct dwarf2_section_info *section, | |
b76e467d | 2546 | int is_dwz) |
9291a0cd | 2547 | { |
12359b5e | 2548 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2549 | { |
74a0d9f6 | 2550 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2551 | |
2552 | sect_offset sect_off | |
2553 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2554 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2555 | cu_list += 2 * 8; |
2556 | ||
b76e467d | 2557 | dwarf2_per_cu_data *per_cu |
168c9250 SM |
2558 | = create_cu_from_index_list (per_bfd, section, is_dwz, sect_off, |
2559 | length); | |
2560 | per_bfd->all_comp_units.push_back (per_cu); | |
9291a0cd | 2561 | } |
9291a0cd TT |
2562 | } |
2563 | ||
2ec9a5e0 | 2564 | /* Read the CU list from the mapped index, and use it to create all |
168c9250 | 2565 | the CU objects for PER_BFD. */ |
2ec9a5e0 | 2566 | |
74a0d9f6 | 2567 | static void |
168c9250 | 2568 | create_cus_from_index (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2569 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2570 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2571 | { | |
168c9250 SM |
2572 | gdb_assert (per_bfd->all_comp_units.empty ()); |
2573 | per_bfd->all_comp_units.reserve ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2574 | |
168c9250 SM |
2575 | create_cus_from_index_list (per_bfd, cu_list, cu_list_elements, |
2576 | &per_bfd->info, 0); | |
2ec9a5e0 TT |
2577 | |
2578 | if (dwz_elements == 0) | |
74a0d9f6 | 2579 | return; |
2ec9a5e0 | 2580 | |
168c9250 SM |
2581 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
2582 | create_cus_from_index_list (per_bfd, dwz_list, dwz_elements, | |
b76e467d | 2583 | &dwz->info, 1); |
2ec9a5e0 TT |
2584 | } |
2585 | ||
1fd400ff | 2586 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2587 | |
74a0d9f6 | 2588 | static void |
12359b5e | 2589 | create_signatured_type_table_from_index |
168c9250 SM |
2590 | (dwarf2_per_bfd *per_bfd, struct dwarf2_section_info *section, |
2591 | const gdb_byte *bytes, offset_type elements) | |
1fd400ff | 2592 | { |
168c9250 SM |
2593 | gdb_assert (per_bfd->all_type_units.empty ()); |
2594 | per_bfd->all_type_units.reserve (elements / 3); | |
1fd400ff | 2595 | |
298e9637 | 2596 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2597 | |
12359b5e | 2598 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2599 | { |
52dc124a | 2600 | struct signatured_type *sig_type; |
9c541725 | 2601 | ULONGEST signature; |
1fd400ff | 2602 | void **slot; |
9c541725 | 2603 | cu_offset type_offset_in_tu; |
1fd400ff | 2604 | |
74a0d9f6 | 2605 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2606 | sect_offset sect_off |
2607 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2608 | type_offset_in_tu | |
2609 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2610 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2611 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2612 | bytes += 3 * 8; | |
2613 | ||
168c9250 | 2614 | sig_type = per_bfd->allocate_signatured_type (); |
52dc124a | 2615 | sig_type->signature = signature; |
9c541725 | 2616 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2617 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2618 | sig_type->per_cu.section = section; |
9c541725 | 2619 | sig_type->per_cu.sect_off = sect_off; |
52dc124a | 2620 | sig_type->per_cu.v.quick |
168c9250 | 2621 | = OBSTACK_ZALLOC (&per_bfd->obstack, |
1fd400ff TT |
2622 | struct dwarf2_per_cu_quick_data); |
2623 | ||
b0b6a987 | 2624 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2625 | *slot = sig_type; |
1fd400ff | 2626 | |
168c9250 | 2627 | per_bfd->all_type_units.push_back (sig_type); |
1fd400ff TT |
2628 | } |
2629 | ||
168c9250 | 2630 | per_bfd->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2631 | } |
2632 | ||
927aa2e7 JK |
2633 | /* Create the signatured type hash table from .debug_names. */ |
2634 | ||
2635 | static void | |
2636 | create_signatured_type_table_from_debug_names | |
976ca316 | 2637 | (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2638 | const mapped_debug_names &map, |
2639 | struct dwarf2_section_info *section, | |
2640 | struct dwarf2_section_info *abbrev_section) | |
2641 | { | |
976ca316 | 2642 | struct objfile *objfile = per_objfile->objfile; |
ed2dc618 | 2643 | |
96b79293 TT |
2644 | section->read (objfile); |
2645 | abbrev_section->read (objfile); | |
927aa2e7 | 2646 | |
976ca316 SM |
2647 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
2648 | per_objfile->per_bfd->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2649 | |
298e9637 | 2650 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2651 | |
2652 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2653 | { | |
2654 | struct signatured_type *sig_type; | |
927aa2e7 | 2655 | void **slot; |
927aa2e7 JK |
2656 | |
2657 | sect_offset sect_off | |
2658 | = (sect_offset) (extract_unsigned_integer | |
2659 | (map.tu_table_reordered + i * map.offset_size, | |
2660 | map.offset_size, | |
2661 | map.dwarf5_byte_order)); | |
2662 | ||
2663 | comp_unit_head cu_header; | |
976ca316 | 2664 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 | 2665 | abbrev_section, |
927aa2e7 JK |
2666 | section->buffer + to_underlying (sect_off), |
2667 | rcuh_kind::TYPE); | |
2668 | ||
976ca316 | 2669 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
927aa2e7 JK |
2670 | sig_type->signature = cu_header.signature; |
2671 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2672 | sig_type->per_cu.is_debug_types = 1; | |
2673 | sig_type->per_cu.section = section; | |
2674 | sig_type->per_cu.sect_off = sect_off; | |
927aa2e7 | 2675 | sig_type->per_cu.v.quick |
976ca316 | 2676 | = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
927aa2e7 JK |
2677 | struct dwarf2_per_cu_quick_data); |
2678 | ||
b0b6a987 | 2679 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2680 | *slot = sig_type; |
2681 | ||
976ca316 | 2682 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2683 | } |
2684 | ||
976ca316 | 2685 | per_objfile->per_bfd->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2686 | } |
2687 | ||
9291a0cd TT |
2688 | /* Read the address map data from the mapped index, and use it to |
2689 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2690 | |
9291a0cd | 2691 | static void |
976ca316 | 2692 | create_addrmap_from_index (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 2693 | struct mapped_index *index) |
9291a0cd | 2694 | { |
976ca316 | 2695 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 2696 | struct gdbarch *gdbarch = objfile->arch (); |
9291a0cd | 2697 | const gdb_byte *iter, *end; |
9291a0cd | 2698 | struct addrmap *mutable_map; |
9291a0cd TT |
2699 | CORE_ADDR baseaddr; |
2700 | ||
8268c778 PA |
2701 | auto_obstack temp_obstack; |
2702 | ||
9291a0cd TT |
2703 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2704 | ||
f00a2de2 PA |
2705 | iter = index->address_table.data (); |
2706 | end = iter + index->address_table.size (); | |
9291a0cd | 2707 | |
b3b3bada | 2708 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2709 | |
2710 | while (iter < end) | |
2711 | { | |
2712 | ULONGEST hi, lo, cu_index; | |
2713 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2714 | iter += 8; | |
2715 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2716 | iter += 8; | |
2717 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2718 | iter += 4; | |
f652bce2 | 2719 | |
24a55014 | 2720 | if (lo > hi) |
f652bce2 | 2721 | { |
b98664d3 | 2722 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2723 | hex_string (lo), hex_string (hi)); |
24a55014 | 2724 | continue; |
f652bce2 | 2725 | } |
24a55014 | 2726 | |
976ca316 | 2727 | if (cu_index >= per_objfile->per_bfd->all_comp_units.size ()) |
f652bce2 | 2728 | { |
b98664d3 | 2729 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2730 | (unsigned) cu_index); |
24a55014 | 2731 | continue; |
f652bce2 | 2732 | } |
24a55014 | 2733 | |
79748972 TT |
2734 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2735 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2736 | addrmap_set_empty (mutable_map, lo, hi - 1, |
976ca316 | 2737 | per_objfile->per_bfd->get_cu (cu_index)); |
9291a0cd TT |
2738 | } |
2739 | ||
d320c2b5 | 2740 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2741 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2742 | } |
2743 | ||
927aa2e7 JK |
2744 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2745 | populate the objfile's psymtabs_addrmap. */ | |
2746 | ||
2747 | static void | |
976ca316 | 2748 | create_addrmap_from_aranges (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2749 | struct dwarf2_section_info *section) |
2750 | { | |
976ca316 | 2751 | struct objfile *objfile = per_objfile->objfile; |
927aa2e7 | 2752 | bfd *abfd = objfile->obfd; |
08feed99 | 2753 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 2754 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2755 | |
2756 | auto_obstack temp_obstack; | |
2757 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2758 | ||
2759 | std::unordered_map<sect_offset, | |
2760 | dwarf2_per_cu_data *, | |
2761 | gdb::hash_enum<sect_offset>> | |
2762 | debug_info_offset_to_per_cu; | |
976ca316 | 2763 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 2764 | { |
927aa2e7 JK |
2765 | const auto insertpair |
2766 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2767 | if (!insertpair.second) | |
2768 | { | |
2769 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2770 | "debug_info_offset %s, ignoring .debug_aranges."), |
2771 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2772 | return; |
2773 | } | |
2774 | } | |
2775 | ||
96b79293 | 2776 | section->read (objfile); |
927aa2e7 JK |
2777 | |
2778 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2779 | ||
2780 | const gdb_byte *addr = section->buffer; | |
2781 | ||
2782 | while (addr < section->buffer + section->size) | |
2783 | { | |
2784 | const gdb_byte *const entry_addr = addr; | |
2785 | unsigned int bytes_read; | |
2786 | ||
2787 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2788 | &bytes_read); | |
2789 | addr += bytes_read; | |
2790 | ||
2791 | const gdb_byte *const entry_end = addr + entry_length; | |
2792 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2793 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2794 | if (addr + entry_length > section->buffer + section->size) | |
2795 | { | |
47e3f474 | 2796 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2797 | "length %s exceeds section length %s, " |
2798 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2799 | objfile_name (objfile), |
2800 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2801 | plongest (bytes_read + entry_length), |
2802 | pulongest (section->size)); | |
2803 | return; | |
2804 | } | |
2805 | ||
2806 | /* The version number. */ | |
2807 | const uint16_t version = read_2_bytes (abfd, addr); | |
2808 | addr += 2; | |
2809 | if (version != 2) | |
2810 | { | |
47e3f474 | 2811 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2812 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2813 | objfile_name (objfile), |
2814 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2815 | return; |
2816 | } | |
2817 | ||
2818 | const uint64_t debug_info_offset | |
2819 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2820 | addr += offset_size; | |
2821 | const auto per_cu_it | |
2822 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2823 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2824 | { | |
47e3f474 | 2825 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2826 | "debug_info_offset %s does not exists, " |
2827 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2828 | objfile_name (objfile), |
2829 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2830 | pulongest (debug_info_offset)); |
2831 | return; | |
2832 | } | |
2833 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2834 | ||
2835 | const uint8_t address_size = *addr++; | |
2836 | if (address_size < 1 || address_size > 8) | |
2837 | { | |
47e3f474 | 2838 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2839 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2840 | objfile_name (objfile), |
2841 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2842 | return; |
2843 | } | |
2844 | ||
2845 | const uint8_t segment_selector_size = *addr++; | |
2846 | if (segment_selector_size != 0) | |
2847 | { | |
47e3f474 | 2848 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2849 | "segment_selector_size %u is not supported, " |
2850 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2851 | objfile_name (objfile), |
2852 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2853 | segment_selector_size); |
2854 | return; | |
2855 | } | |
2856 | ||
2857 | /* Must pad to an alignment boundary that is twice the address | |
2858 | size. It is undocumented by the DWARF standard but GCC does | |
2859 | use it. */ | |
2860 | for (size_t padding = ((-(addr - section->buffer)) | |
2861 | & (2 * address_size - 1)); | |
2862 | padding > 0; padding--) | |
2863 | if (*addr++ != 0) | |
2864 | { | |
47e3f474 | 2865 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2866 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2867 | objfile_name (objfile), |
2868 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2869 | return; |
2870 | } | |
2871 | ||
2872 | for (;;) | |
2873 | { | |
2874 | if (addr + 2 * address_size > entry_end) | |
2875 | { | |
47e3f474 | 2876 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2877 | "address list is not properly terminated, " |
2878 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2879 | objfile_name (objfile), |
2880 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2881 | return; |
2882 | } | |
2883 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2884 | dwarf5_byte_order); | |
2885 | addr += address_size; | |
2886 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2887 | dwarf5_byte_order); | |
2888 | addr += address_size; | |
2889 | if (start == 0 && length == 0) | |
2890 | break; | |
976ca316 | 2891 | if (start == 0 && !per_objfile->per_bfd->has_section_at_zero) |
927aa2e7 JK |
2892 | { |
2893 | /* Symbol was eliminated due to a COMDAT group. */ | |
2894 | continue; | |
2895 | } | |
2896 | ULONGEST end = start + length; | |
79748972 TT |
2897 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
2898 | - baseaddr); | |
2899 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
2900 | - baseaddr); | |
927aa2e7 JK |
2901 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
2902 | } | |
2903 | } | |
2904 | ||
d320c2b5 | 2905 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2906 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
2907 | } |
2908 | ||
9291a0cd TT |
2909 | /* Find a slot in the mapped index INDEX for the object named NAME. |
2910 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
2911 | constant pool and return true. If NAME cannot be found, return |
2912 | false. */ | |
2fdf6df6 | 2913 | |
109483d9 | 2914 | static bool |
9291a0cd TT |
2915 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
2916 | offset_type **vec_out) | |
2917 | { | |
0cf03b49 | 2918 | offset_type hash; |
9291a0cd | 2919 | offset_type slot, step; |
559a7a62 | 2920 | int (*cmp) (const char *, const char *); |
9291a0cd | 2921 | |
791afaa2 | 2922 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 2923 | if (current_language->la_language == language_cplus |
45280282 IB |
2924 | || current_language->la_language == language_fortran |
2925 | || current_language->la_language == language_d) | |
0cf03b49 JK |
2926 | { |
2927 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2928 | not contain any. */ | |
a8719064 | 2929 | |
72998fb3 | 2930 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2931 | { |
109483d9 | 2932 | without_params = cp_remove_params (name); |
0cf03b49 | 2933 | |
72998fb3 | 2934 | if (without_params != NULL) |
791afaa2 | 2935 | name = without_params.get (); |
0cf03b49 JK |
2936 | } |
2937 | } | |
2938 | ||
559a7a62 | 2939 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2940 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2941 | simulate our NAME being searched is also lowercased. */ |
2942 | hash = mapped_index_string_hash ((index->version == 4 | |
2943 | && case_sensitivity == case_sensitive_off | |
2944 | ? 5 : index->version), | |
2945 | name); | |
2946 | ||
f00a2de2 PA |
2947 | slot = hash & (index->symbol_table.size () - 1); |
2948 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 2949 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2950 | |
2951 | for (;;) | |
2952 | { | |
9291a0cd | 2953 | const char *str; |
f00a2de2 PA |
2954 | |
2955 | const auto &bucket = index->symbol_table[slot]; | |
2956 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 2957 | return false; |
9291a0cd | 2958 | |
f00a2de2 | 2959 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 2960 | if (!cmp (name, str)) |
9291a0cd TT |
2961 | { |
2962 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 2963 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 2964 | return true; |
9291a0cd TT |
2965 | } |
2966 | ||
f00a2de2 | 2967 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
2968 | } |
2969 | } | |
2970 | ||
4485a1c1 SM |
2971 | /* A helper function that reads the .gdb_index from BUFFER and fills |
2972 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 2973 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
2974 | ok to use deprecated sections. |
2975 | ||
2976 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2977 | out parameters that are filled in with information about the CU and | |
2978 | TU lists in the section. | |
2979 | ||
4485a1c1 | 2980 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 2981 | |
d33bc52e | 2982 | static bool |
3810f182 | 2983 | read_gdb_index_from_buffer (const char *filename, |
4485a1c1 SM |
2984 | bool deprecated_ok, |
2985 | gdb::array_view<const gdb_byte> buffer, | |
2986 | struct mapped_index *map, | |
2987 | const gdb_byte **cu_list, | |
2988 | offset_type *cu_list_elements, | |
2989 | const gdb_byte **types_list, | |
2990 | offset_type *types_list_elements) | |
2991 | { | |
2992 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 2993 | |
9291a0cd | 2994 | /* Version check. */ |
4485a1c1 | 2995 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2996 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2997 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2998 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2999 | indices. */ |
831adc1f | 3000 | if (version < 4) |
481860b3 GB |
3001 | { |
3002 | static int warning_printed = 0; | |
3003 | if (!warning_printed) | |
3004 | { | |
3005 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3006 | filename); |
481860b3 GB |
3007 | warning_printed = 1; |
3008 | } | |
3009 | return 0; | |
3010 | } | |
3011 | /* Index version 4 uses a different hash function than index version | |
3012 | 5 and later. | |
3013 | ||
3014 | Versions earlier than 6 did not emit psymbols for inlined | |
3015 | functions. Using these files will cause GDB not to be able to | |
3016 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3017 | indices unless the user has done |
3018 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3019 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3020 | { |
3021 | static int warning_printed = 0; | |
3022 | if (!warning_printed) | |
3023 | { | |
e615022a DE |
3024 | warning (_("\ |
3025 | Skipping deprecated .gdb_index section in %s.\n\ | |
3026 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3027 | to use the section anyway."), | |
2ec9a5e0 | 3028 | filename); |
481860b3 GB |
3029 | warning_printed = 1; |
3030 | } | |
3031 | return 0; | |
3032 | } | |
796a7ff8 | 3033 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3034 | of the TU (for symbols coming from TUs), |
3035 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3036 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3037 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3038 | These are just performance bugs, and we can't distinguish gdb-generated | |
3039 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3040 | |
481860b3 | 3041 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3042 | longer backward compatible. */ |
796a7ff8 | 3043 | if (version > 8) |
594e8718 | 3044 | return 0; |
9291a0cd | 3045 | |
559a7a62 | 3046 | map->version = version; |
9291a0cd | 3047 | |
4485a1c1 | 3048 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3049 | |
4485a1c1 | 3050 | int i = 0; |
2ec9a5e0 TT |
3051 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3052 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3053 | / 8); | |
1fd400ff TT |
3054 | ++i; |
3055 | ||
2ec9a5e0 TT |
3056 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3057 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3058 | - MAYBE_SWAP (metadata[i])) | |
3059 | / 8); | |
987d643c | 3060 | ++i; |
1fd400ff | 3061 | |
f00a2de2 PA |
3062 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3063 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3064 | map->address_table | |
3065 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3066 | ++i; |
3067 | ||
f00a2de2 PA |
3068 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3069 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3070 | map->symbol_table | |
3071 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3072 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3073 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3074 | |
f00a2de2 | 3075 | ++i; |
f9d83a0b | 3076 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3077 | |
2ec9a5e0 TT |
3078 | return 1; |
3079 | } | |
3080 | ||
4485a1c1 SM |
3081 | /* Callback types for dwarf2_read_gdb_index. */ |
3082 | ||
3083 | typedef gdb::function_view | |
5989a64e | 3084 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_bfd *)> |
4485a1c1 SM |
3085 | get_gdb_index_contents_ftype; |
3086 | typedef gdb::function_view | |
3087 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3088 | get_gdb_index_contents_dwz_ftype; | |
3089 | ||
927aa2e7 | 3090 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3091 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3092 | ||
3093 | static int | |
4485a1c1 | 3094 | dwarf2_read_gdb_index |
976ca316 | 3095 | (dwarf2_per_objfile *per_objfile, |
4485a1c1 SM |
3096 | get_gdb_index_contents_ftype get_gdb_index_contents, |
3097 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3098 | { |
2ec9a5e0 TT |
3099 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3100 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3101 | struct dwz_file *dwz; |
976ca316 | 3102 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 3103 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
2ec9a5e0 | 3104 | |
4485a1c1 | 3105 | gdb::array_view<const gdb_byte> main_index_contents |
f8c41851 | 3106 | = get_gdb_index_contents (objfile, per_bfd); |
4485a1c1 SM |
3107 | |
3108 | if (main_index_contents.empty ()) | |
3109 | return 0; | |
3110 | ||
3063847f | 3111 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
3810f182 | 3112 | if (!read_gdb_index_from_buffer (objfile_name (objfile), |
4485a1c1 SM |
3113 | use_deprecated_index_sections, |
3114 | main_index_contents, map.get (), &cu_list, | |
3115 | &cu_list_elements, &types_list, | |
3116 | &types_list_elements)) | |
2ec9a5e0 TT |
3117 | return 0; |
3118 | ||
0fefef59 | 3119 | /* Don't use the index if it's empty. */ |
3063847f | 3120 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3121 | return 0; |
3122 | ||
2ec9a5e0 TT |
3123 | /* If there is a .dwz file, read it so we can get its CU list as |
3124 | well. */ | |
f8c41851 | 3125 | dwz = dwarf2_get_dwz_file (per_bfd); |
4db1a1dc | 3126 | if (dwz != NULL) |
2ec9a5e0 | 3127 | { |
2ec9a5e0 TT |
3128 | struct mapped_index dwz_map; |
3129 | const gdb_byte *dwz_types_ignore; | |
3130 | offset_type dwz_types_elements_ignore; | |
3131 | ||
4485a1c1 SM |
3132 | gdb::array_view<const gdb_byte> dwz_index_content |
3133 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3134 | ||
3135 | if (dwz_index_content.empty ()) | |
3136 | return 0; | |
3137 | ||
3810f182 | 3138 | if (!read_gdb_index_from_buffer (bfd_get_filename (dwz->dwz_bfd.get ()), |
00f93c44 | 3139 | 1, dwz_index_content, &dwz_map, |
4485a1c1 SM |
3140 | &dwz_list, &dwz_list_elements, |
3141 | &dwz_types_ignore, | |
3142 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3143 | { |
3144 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3145 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3146 | return 0; |
3147 | } | |
3148 | } | |
3149 | ||
f8c41851 SM |
3150 | create_cus_from_index (per_bfd, cu_list, cu_list_elements, dwz_list, |
3151 | dwz_list_elements); | |
1fd400ff | 3152 | |
8b70b953 TT |
3153 | if (types_list_elements) |
3154 | { | |
8b70b953 TT |
3155 | /* We can only handle a single .debug_types when we have an |
3156 | index. */ | |
f8c41851 | 3157 | if (per_bfd->types.size () != 1) |
8b70b953 TT |
3158 | return 0; |
3159 | ||
f8c41851 | 3160 | dwarf2_section_info *section = &per_bfd->types[0]; |
8b70b953 | 3161 | |
f8c41851 | 3162 | create_signatured_type_table_from_index (per_bfd, section, types_list, |
168c9250 | 3163 | types_list_elements); |
8b70b953 | 3164 | } |
9291a0cd | 3165 | |
976ca316 | 3166 | create_addrmap_from_index (per_objfile, map.get ()); |
9291a0cd | 3167 | |
f8c41851 SM |
3168 | per_bfd->index_table = std::move (map); |
3169 | per_bfd->using_index = 1; | |
3170 | per_bfd->quick_file_names_table = | |
3171 | create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
3172 | ||
3173 | /* Save partial symtabs in the per_bfd object, for the benefit of subsequent | |
3174 | objfiles using the same BFD. */ | |
3175 | gdb_assert (per_bfd->partial_symtabs == nullptr); | |
3176 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
9291a0cd TT |
3177 | |
3178 | return 1; | |
3179 | } | |
3180 | ||
dee91e82 | 3181 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3182 | |
dee91e82 DE |
3183 | static void |
3184 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3185 | const gdb_byte *info_ptr, |
3e225074 | 3186 | struct die_info *comp_unit_die) |
9291a0cd | 3187 | { |
dee91e82 | 3188 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3189 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
976ca316 | 3190 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
094b34ac | 3191 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3192 | struct attribute *attr; |
7b9f3c50 DE |
3193 | void **slot; |
3194 | struct quick_file_names *qfn; | |
9291a0cd | 3195 | |
0186c6a7 DE |
3196 | gdb_assert (! this_cu->is_debug_types); |
3197 | ||
07261596 TT |
3198 | /* Our callers never want to match partial units -- instead they |
3199 | will match the enclosing full CU. */ | |
3200 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3201 | { | |
3202 | this_cu->v.quick->no_file_data = 1; | |
3203 | return; | |
3204 | } | |
3205 | ||
0186c6a7 | 3206 | lh_cu = this_cu; |
7b9f3c50 | 3207 | slot = NULL; |
dee91e82 | 3208 | |
fff8551c | 3209 | line_header_up lh; |
9c541725 | 3210 | sect_offset line_offset {}; |
fff8551c | 3211 | |
dee91e82 | 3212 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
435d3d88 | 3213 | if (attr != nullptr) |
9291a0cd | 3214 | { |
7b9f3c50 DE |
3215 | struct quick_file_names find_entry; |
3216 | ||
9c541725 | 3217 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3218 | |
3219 | /* We may have already read in this line header (TU line header sharing). | |
3220 | If we have we're done. */ | |
094b34ac | 3221 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3222 | find_entry.hash.line_sect_off = line_offset; |
976ca316 | 3223 | slot = htab_find_slot (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 DE |
3224 | &find_entry, INSERT); |
3225 | if (*slot != NULL) | |
3226 | { | |
9a3c8263 | 3227 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3228 | return; |
7b9f3c50 DE |
3229 | } |
3230 | ||
3019eac3 | 3231 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3232 | } |
3233 | if (lh == NULL) | |
3234 | { | |
094b34ac | 3235 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3236 | return; |
9291a0cd TT |
3237 | } |
3238 | ||
976ca316 | 3239 | qfn = XOBNEW (&per_objfile->per_bfd->obstack, struct quick_file_names); |
094b34ac | 3240 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3241 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3242 | gdb_assert (slot != NULL); |
3243 | *slot = qfn; | |
9291a0cd | 3244 | |
d721ba37 | 3245 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3246 | |
aa391654 TT |
3247 | int offset = 0; |
3248 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3249 | ++offset; | |
3250 | ||
7ba99d21 | 3251 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3252 | qfn->file_names = |
976ca316 | 3253 | XOBNEWVEC (&per_objfile->per_bfd->obstack, const char *, |
45940949 | 3254 | qfn->num_file_names); |
aa391654 TT |
3255 | if (offset != 0) |
3256 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3257 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3258 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3259 | fnd.comp_dir).release (); | |
7b9f3c50 | 3260 | qfn->real_names = NULL; |
9291a0cd | 3261 | |
094b34ac | 3262 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3263 | } |
3264 | ||
3265 | /* A helper for the "quick" functions which attempts to read the line | |
3266 | table for THIS_CU. */ | |
3267 | ||
3268 | static struct quick_file_names * | |
ab432490 SM |
3269 | dw2_get_file_names (dwarf2_per_cu_data *this_cu, |
3270 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 3271 | { |
0186c6a7 DE |
3272 | /* This should never be called for TUs. */ |
3273 | gdb_assert (! this_cu->is_debug_types); | |
3274 | /* Nor type unit groups. */ | |
197400e8 | 3275 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3276 | |
dee91e82 DE |
3277 | if (this_cu->v.quick->file_names != NULL) |
3278 | return this_cu->v.quick->file_names; | |
3279 | /* If we know there is no line data, no point in looking again. */ | |
3280 | if (this_cu->v.quick->no_file_data) | |
3281 | return NULL; | |
3282 | ||
ab432490 | 3283 | cutu_reader reader (this_cu, per_objfile); |
c0ab21c2 | 3284 | if (!reader.dummy_p) |
3e225074 | 3285 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die); |
dee91e82 DE |
3286 | |
3287 | if (this_cu->v.quick->no_file_data) | |
3288 | return NULL; | |
3289 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3290 | } |
3291 | ||
3292 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3293 | real path for a given file name from the line table. */ |
2fdf6df6 | 3294 | |
9291a0cd | 3295 | static const char * |
976ca316 | 3296 | dw2_get_real_path (dwarf2_per_objfile *per_objfile, |
7b9f3c50 | 3297 | struct quick_file_names *qfn, int index) |
9291a0cd | 3298 | { |
7b9f3c50 | 3299 | if (qfn->real_names == NULL) |
976ca316 | 3300 | qfn->real_names = OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
26f2dc30 | 3301 | qfn->num_file_names, const char *); |
9291a0cd | 3302 | |
7b9f3c50 | 3303 | if (qfn->real_names[index] == NULL) |
14278e1f | 3304 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3305 | |
7b9f3c50 | 3306 | return qfn->real_names[index]; |
9291a0cd TT |
3307 | } |
3308 | ||
3309 | static struct symtab * | |
3310 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3311 | { | |
976ca316 SM |
3312 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3313 | dwarf2_per_cu_data *dwarf_cu = per_objfile->per_bfd->all_comp_units.back (); | |
3314 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, per_objfile, false); | |
ae2de4f8 | 3315 | |
43f3e411 DE |
3316 | if (cust == NULL) |
3317 | return NULL; | |
ed2dc618 | 3318 | |
43f3e411 | 3319 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3320 | } |
3321 | ||
7b9f3c50 DE |
3322 | /* Traversal function for dw2_forget_cached_source_info. */ |
3323 | ||
3324 | static int | |
3325 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3326 | { |
7b9f3c50 | 3327 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3328 | |
7b9f3c50 | 3329 | if (file_data->real_names) |
9291a0cd | 3330 | { |
7b9f3c50 | 3331 | int i; |
9291a0cd | 3332 | |
7b9f3c50 | 3333 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3334 | { |
7b9f3c50 DE |
3335 | xfree ((void*) file_data->real_names[i]); |
3336 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3337 | } |
3338 | } | |
7b9f3c50 DE |
3339 | |
3340 | return 1; | |
3341 | } | |
3342 | ||
3343 | static void | |
3344 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3345 | { | |
976ca316 | 3346 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
7b9f3c50 | 3347 | |
976ca316 | 3348 | htab_traverse_noresize (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 | 3349 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3350 | } |
3351 | ||
f8eba3c6 TT |
3352 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3353 | the symtabs and calls the iterator. */ | |
3354 | ||
3355 | static int | |
3356 | dw2_map_expand_apply (struct objfile *objfile, | |
3357 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3358 | const char *name, const char *real_path, |
14bc53a8 | 3359 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3360 | { |
43f3e411 | 3361 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3362 | |
3363 | /* Don't visit already-expanded CUs. */ | |
af758d11 SM |
3364 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3365 | if (per_objfile->symtab_set_p (per_cu)) | |
f8eba3c6 TT |
3366 | return 0; |
3367 | ||
3368 | /* This may expand more than one symtab, and we want to iterate over | |
3369 | all of them. */ | |
97a1449a | 3370 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
f8eba3c6 | 3371 | |
14bc53a8 PA |
3372 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3373 | last_made, callback); | |
f8eba3c6 TT |
3374 | } |
3375 | ||
3376 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3377 | ||
14bc53a8 PA |
3378 | static bool |
3379 | dw2_map_symtabs_matching_filename | |
3380 | (struct objfile *objfile, const char *name, const char *real_path, | |
3381 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3382 | { |
c011a4f4 | 3383 | const char *name_basename = lbasename (name); |
976ca316 | 3384 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 3385 | |
848e3e78 DE |
3386 | /* The rule is CUs specify all the files, including those used by |
3387 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3388 | |
976ca316 | 3389 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3390 | { |
3d7bb9d9 | 3391 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3392 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3393 | continue; |
3394 | ||
976ca316 | 3395 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3396 | if (file_data == NULL) |
9291a0cd TT |
3397 | continue; |
3398 | ||
b76e467d | 3399 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3400 | { |
7b9f3c50 | 3401 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3402 | const char *this_real_name; |
9291a0cd | 3403 | |
af529f8f | 3404 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3405 | { |
f5b95b50 | 3406 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3407 | callback)) |
3408 | return true; | |
288e77a7 | 3409 | continue; |
4aac40c8 | 3410 | } |
9291a0cd | 3411 | |
c011a4f4 DE |
3412 | /* Before we invoke realpath, which can get expensive when many |
3413 | files are involved, do a quick comparison of the basenames. */ | |
3414 | if (! basenames_may_differ | |
3415 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3416 | continue; | |
3417 | ||
976ca316 | 3418 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
da235a7c | 3419 | if (compare_filenames_for_search (this_real_name, name)) |
9291a0cd | 3420 | { |
da235a7c | 3421 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3422 | callback)) |
3423 | return true; | |
288e77a7 | 3424 | continue; |
da235a7c | 3425 | } |
9291a0cd | 3426 | |
da235a7c JK |
3427 | if (real_path != NULL) |
3428 | { | |
af529f8f JK |
3429 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3430 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3431 | if (this_real_name != NULL |
af529f8f | 3432 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3433 | { |
f5b95b50 | 3434 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3435 | callback)) |
3436 | return true; | |
288e77a7 | 3437 | continue; |
9291a0cd TT |
3438 | } |
3439 | } | |
3440 | } | |
3441 | } | |
3442 | ||
14bc53a8 | 3443 | return false; |
9291a0cd TT |
3444 | } |
3445 | ||
da51c347 DE |
3446 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3447 | ||
3448 | struct dw2_symtab_iterator | |
9291a0cd | 3449 | { |
ed2dc618 | 3450 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
976ca316 | 3451 | dwarf2_per_objfile *per_objfile; |
2b79f376 SM |
3452 | /* If set, only look for symbols that match that block. Valid values are |
3453 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3454 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3455 | /* The kind of symbol we're looking for. */ |
3456 | domain_enum domain; | |
3457 | /* The list of CUs from the index entry of the symbol, | |
3458 | or NULL if not found. */ | |
3459 | offset_type *vec; | |
3460 | /* The next element in VEC to look at. */ | |
3461 | int next; | |
3462 | /* The number of elements in VEC, or zero if there is no match. */ | |
3463 | int length; | |
8943b874 DE |
3464 | /* Have we seen a global version of the symbol? |
3465 | If so we can ignore all further global instances. | |
3466 | This is to work around gold/15646, inefficient gold-generated | |
3467 | indices. */ | |
3468 | int global_seen; | |
da51c347 | 3469 | }; |
9291a0cd | 3470 | |
e5f3ece2 | 3471 | /* Initialize the index symtab iterator ITER, common part. */ |
2fdf6df6 | 3472 | |
9291a0cd | 3473 | static void |
e5f3ece2 TV |
3474 | dw2_symtab_iter_init_common (struct dw2_symtab_iterator *iter, |
3475 | dwarf2_per_objfile *per_objfile, | |
3476 | gdb::optional<block_enum> block_index, | |
3477 | domain_enum domain) | |
da51c347 | 3478 | { |
976ca316 | 3479 | iter->per_objfile = per_objfile; |
da51c347 DE |
3480 | iter->block_index = block_index; |
3481 | iter->domain = domain; | |
3482 | iter->next = 0; | |
8943b874 | 3483 | iter->global_seen = 0; |
e5f3ece2 TV |
3484 | iter->vec = NULL; |
3485 | iter->length = 0; | |
3486 | } | |
da51c347 | 3487 | |
e5f3ece2 TV |
3488 | /* Initialize the index symtab iterator ITER, const char *NAME variant. */ |
3489 | ||
3490 | static void | |
3491 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3492 | dwarf2_per_objfile *per_objfile, | |
3493 | gdb::optional<block_enum> block_index, | |
3494 | domain_enum domain, | |
3495 | const char *name) | |
3496 | { | |
3497 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
ed2dc618 | 3498 | |
e5f3ece2 | 3499 | mapped_index *index = per_objfile->per_bfd->index_table.get (); |
ed2dc618 | 3500 | /* index is NULL if OBJF_READNOW. */ |
e5f3ece2 TV |
3501 | if (index == NULL) |
3502 | return; | |
3503 | ||
3504 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 | 3505 | iter->length = MAYBE_SWAP (*iter->vec); |
e5f3ece2 TV |
3506 | } |
3507 | ||
3508 | /* Initialize the index symtab iterator ITER, offset_type NAMEI variant. */ | |
3509 | ||
3510 | static void | |
3511 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3512 | dwarf2_per_objfile *per_objfile, | |
3513 | gdb::optional<block_enum> block_index, | |
3514 | domain_enum domain, offset_type namei) | |
3515 | { | |
3516 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
3517 | ||
3518 | mapped_index *index = per_objfile->per_bfd->index_table.get (); | |
3519 | /* index is NULL if OBJF_READNOW. */ | |
3520 | if (index == NULL) | |
3521 | return; | |
3522 | ||
3523 | gdb_assert (!index->symbol_name_slot_invalid (namei)); | |
3524 | const auto &bucket = index->symbol_table[namei]; | |
3525 | ||
3526 | iter->vec = (offset_type *) (index->constant_pool | |
3527 | + MAYBE_SWAP (bucket.vec)); | |
3528 | iter->length = MAYBE_SWAP (*iter->vec); | |
da51c347 DE |
3529 | } |
3530 | ||
3531 | /* Return the next matching CU or NULL if there are no more. */ | |
3532 | ||
3533 | static struct dwarf2_per_cu_data * | |
3534 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3535 | { | |
976ca316 | 3536 | dwarf2_per_objfile *per_objfile = iter->per_objfile; |
ed2dc618 | 3537 | |
da51c347 DE |
3538 | for ( ; iter->next < iter->length; ++iter->next) |
3539 | { | |
3540 | offset_type cu_index_and_attrs = | |
3541 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3542 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3543 | gdb_index_symbol_kind symbol_kind = |
3544 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3545 | /* Only check the symbol attributes if they're present. | |
3546 | Indices prior to version 7 don't record them, | |
3547 | and indices >= 7 may elide them for certain symbols | |
3548 | (gold does this). */ | |
3549 | int attrs_valid = | |
976ca316 | 3550 | (per_objfile->per_bfd->index_table->version >= 7 |
da51c347 DE |
3551 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3552 | ||
3190f0c6 | 3553 | /* Don't crash on bad data. */ |
976ca316 SM |
3554 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
3555 | + per_objfile->per_bfd->all_type_units.size ())) | |
3190f0c6 | 3556 | { |
b98664d3 | 3557 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 3558 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
3190f0c6 DE |
3559 | continue; |
3560 | } | |
3561 | ||
976ca316 | 3562 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
3190f0c6 | 3563 | |
da51c347 | 3564 | /* Skip if already read in. */ |
976ca316 | 3565 | if (per_objfile->symtab_set_p (per_cu)) |
da51c347 DE |
3566 | continue; |
3567 | ||
8943b874 DE |
3568 | /* Check static vs global. */ |
3569 | if (attrs_valid) | |
3570 | { | |
2b79f376 SM |
3571 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3572 | ||
3573 | if (iter->block_index.has_value ()) | |
3574 | { | |
3575 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3576 | ||
3577 | if (is_static != want_static) | |
3578 | continue; | |
3579 | } | |
3580 | ||
8943b874 | 3581 | /* Work around gold/15646. */ |
f030440d TV |
3582 | if (!is_static |
3583 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
3584 | { | |
3585 | if (iter->global_seen) | |
3586 | continue; | |
3587 | ||
3588 | iter->global_seen = 1; | |
3589 | } | |
8943b874 | 3590 | } |
da51c347 DE |
3591 | |
3592 | /* Only check the symbol's kind if it has one. */ | |
3593 | if (attrs_valid) | |
3594 | { | |
3595 | switch (iter->domain) | |
3596 | { | |
3597 | case VAR_DOMAIN: | |
3598 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3599 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3600 | /* Some types are also in VAR_DOMAIN. */ | |
3601 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3602 | continue; | |
3603 | break; | |
3604 | case STRUCT_DOMAIN: | |
3605 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3606 | continue; | |
3607 | break; | |
3608 | case LABEL_DOMAIN: | |
3609 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3610 | continue; | |
3611 | break; | |
59c35742 AB |
3612 | case MODULE_DOMAIN: |
3613 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3614 | continue; | |
3615 | break; | |
da51c347 DE |
3616 | default: |
3617 | break; | |
3618 | } | |
3619 | } | |
3620 | ||
3621 | ++iter->next; | |
3622 | return per_cu; | |
3623 | } | |
3624 | ||
3625 | return NULL; | |
3626 | } | |
3627 | ||
43f3e411 | 3628 | static struct compunit_symtab * |
c7f839cb | 3629 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3630 | const char *name, domain_enum domain) |
9291a0cd | 3631 | { |
43f3e411 | 3632 | struct compunit_symtab *stab_best = NULL; |
976ca316 | 3633 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 3634 | |
b5ec771e PA |
3635 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3636 | ||
ed2dc618 SM |
3637 | struct dw2_symtab_iterator iter; |
3638 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3639 | |
976ca316 | 3640 | dw2_symtab_iter_init (&iter, per_objfile, block_index, domain, name); |
9291a0cd | 3641 | |
ed2dc618 SM |
3642 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3643 | { | |
3644 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 3645 | struct compunit_symtab *stab |
976ca316 | 3646 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
ed2dc618 | 3647 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3648 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3649 | |
ed2dc618 SM |
3650 | sym = block_find_symbol (block, name, domain, |
3651 | block_find_non_opaque_type_preferred, | |
3652 | &with_opaque); | |
b2e2f908 | 3653 | |
ed2dc618 SM |
3654 | /* Some caution must be observed with overloaded functions |
3655 | and methods, since the index will not contain any overload | |
3656 | information (but NAME might contain it). */ | |
da51c347 | 3657 | |
ed2dc618 SM |
3658 | if (sym != NULL |
3659 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3660 | return stab; | |
3661 | if (with_opaque != NULL | |
3662 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3663 | stab_best = stab; | |
da51c347 | 3664 | |
ed2dc618 | 3665 | /* Keep looking through other CUs. */ |
9291a0cd | 3666 | } |
9291a0cd | 3667 | |
da51c347 | 3668 | return stab_best; |
9291a0cd TT |
3669 | } |
3670 | ||
3671 | static void | |
3672 | dw2_print_stats (struct objfile *objfile) | |
3673 | { | |
976ca316 SM |
3674 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3675 | int total = (per_objfile->per_bfd->all_comp_units.size () | |
3676 | + per_objfile->per_bfd->all_type_units.size ()); | |
ed2dc618 | 3677 | int count = 0; |
9291a0cd | 3678 | |
ed2dc618 | 3679 | for (int i = 0; i < total; ++i) |
9291a0cd | 3680 | { |
976ca316 | 3681 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3682 | |
976ca316 | 3683 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3684 | ++count; |
3685 | } | |
e4a48d9d | 3686 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3687 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3688 | } | |
3689 | ||
779bd270 DE |
3690 | /* This dumps minimal information about the index. |
3691 | It is called via "mt print objfiles". | |
3692 | One use is to verify .gdb_index has been loaded by the | |
3693 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3694 | ||
9291a0cd TT |
3695 | static void |
3696 | dw2_dump (struct objfile *objfile) | |
3697 | { | |
976ca316 | 3698 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 3699 | |
976ca316 | 3700 | gdb_assert (per_objfile->per_bfd->using_index); |
779bd270 | 3701 | printf_filtered (".gdb_index:"); |
976ca316 | 3702 | if (per_objfile->per_bfd->index_table != NULL) |
779bd270 DE |
3703 | { |
3704 | printf_filtered (" version %d\n", | |
976ca316 | 3705 | per_objfile->per_bfd->index_table->version); |
779bd270 DE |
3706 | } |
3707 | else | |
3708 | printf_filtered (" faked for \"readnow\"\n"); | |
3709 | printf_filtered ("\n"); | |
9291a0cd TT |
3710 | } |
3711 | ||
9291a0cd TT |
3712 | static void |
3713 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3714 | const char *func_name) | |
3715 | { | |
976ca316 | 3716 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
da51c347 | 3717 | |
ed2dc618 SM |
3718 | struct dw2_symtab_iterator iter; |
3719 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3720 | |
976ca316 | 3721 | dw2_symtab_iter_init (&iter, per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3722 | |
ed2dc618 | 3723 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3724 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
da51c347 | 3725 | |
9291a0cd TT |
3726 | } |
3727 | ||
3728 | static void | |
3729 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3730 | { | |
976ca316 SM |
3731 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3732 | int total_units = (per_objfile->per_bfd->all_comp_units.size () | |
3733 | + per_objfile->per_bfd->all_type_units.size ()); | |
9291a0cd | 3734 | |
ed2dc618 | 3735 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3736 | { |
976ca316 | 3737 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3738 | |
58f0c718 TT |
3739 | /* We don't want to directly expand a partial CU, because if we |
3740 | read it with the wrong language, then assertion failures can | |
3741 | be triggered later on. See PR symtab/23010. So, tell | |
3742 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3743 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
976ca316 | 3744 | dw2_instantiate_symtab (per_cu, per_objfile, true); |
9291a0cd TT |
3745 | } |
3746 | } | |
3747 | ||
3748 | static void | |
652a8996 JK |
3749 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3750 | const char *fullname) | |
9291a0cd | 3751 | { |
976ca316 | 3752 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
d4637a04 DE |
3753 | |
3754 | /* We don't need to consider type units here. | |
3755 | This is only called for examining code, e.g. expand_line_sal. | |
3756 | There can be an order of magnitude (or more) more type units | |
3757 | than comp units, and we avoid them if we can. */ | |
3758 | ||
976ca316 | 3759 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3760 | { |
3d7bb9d9 | 3761 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3762 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3763 | continue; |
3764 | ||
976ca316 | 3765 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3766 | if (file_data == NULL) |
9291a0cd TT |
3767 | continue; |
3768 | ||
b76e467d | 3769 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3770 | { |
652a8996 JK |
3771 | const char *this_fullname = file_data->file_names[j]; |
3772 | ||
3773 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3774 | { |
976ca316 | 3775 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
9291a0cd TT |
3776 | break; |
3777 | } | |
3778 | } | |
3779 | } | |
3780 | } | |
3781 | ||
9a0bacfb TV |
3782 | static void |
3783 | dw2_expand_symtabs_matching_symbol | |
3784 | (mapped_index_base &index, | |
3785 | const lookup_name_info &lookup_name_in, | |
3786 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3787 | enum search_domain kind, | |
fcf23d5b SM |
3788 | gdb::function_view<bool (offset_type)> match_callback, |
3789 | dwarf2_per_objfile *per_objfile); | |
9a0bacfb TV |
3790 | |
3791 | static void | |
3792 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
3793 | (dwarf2_per_cu_data *per_cu, |
3794 | dwarf2_per_objfile *per_objfile, | |
9a0bacfb TV |
3795 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3796 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify); | |
3797 | ||
9291a0cd | 3798 | static void |
199b4314 TT |
3799 | dw2_map_matching_symbols |
3800 | (struct objfile *objfile, | |
b054970d | 3801 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3802 | int global, |
3803 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3804 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3805 | { |
1aa98955 | 3806 | /* Used for Ada. */ |
976ca316 | 3807 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
1aa98955 | 3808 | |
9a0bacfb TV |
3809 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
3810 | ||
976ca316 | 3811 | if (per_objfile->per_bfd->index_table != nullptr) |
1aa98955 | 3812 | { |
976ca316 | 3813 | mapped_index &index = *per_objfile->per_bfd->index_table; |
1aa98955 | 3814 | |
9a0bacfb TV |
3815 | const char *match_name = name.ada ().lookup_name ().c_str (); |
3816 | auto matcher = [&] (const char *symname) | |
3817 | { | |
3818 | if (ordered_compare == nullptr) | |
3819 | return true; | |
3820 | return ordered_compare (symname, match_name) == 0; | |
3821 | }; | |
3822 | ||
3823 | dw2_expand_symtabs_matching_symbol (index, name, matcher, ALL_DOMAIN, | |
3824 | [&] (offset_type namei) | |
3825 | { | |
3826 | struct dw2_symtab_iterator iter; | |
3827 | struct dwarf2_per_cu_data *per_cu; | |
3828 | ||
976ca316 | 3829 | dw2_symtab_iter_init (&iter, per_objfile, block_kind, domain, |
e5f3ece2 | 3830 | namei); |
9a0bacfb | 3831 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3832 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 3833 | nullptr); |
9a0bacfb | 3834 | return true; |
976ca316 | 3835 | }, per_objfile); |
9a0bacfb TV |
3836 | } |
3837 | else | |
3838 | { | |
3839 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3840 | proceed assuming all symtabs have been read in. */ | |
3841 | } | |
1aa98955 TV |
3842 | |
3843 | for (compunit_symtab *cust : objfile->compunits ()) | |
3844 | { | |
3845 | const struct block *block; | |
3846 | ||
3847 | if (cust == NULL) | |
3848 | continue; | |
3849 | block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
3850 | if (!iterate_over_symbols_terminated (block, name, | |
3851 | domain, callback)) | |
3852 | return; | |
3853 | } | |
9291a0cd TT |
3854 | } |
3855 | ||
e1ef7d7a PA |
3856 | /* Starting from a search name, return the string that finds the upper |
3857 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3858 | list. Returns the empty string to indicate that the upper bound is | |
3859 | the end of the list. */ | |
3860 | ||
3861 | static std::string | |
3862 | make_sort_after_prefix_name (const char *search_name) | |
3863 | { | |
3864 | /* When looking to complete "func", we find the upper bound of all | |
3865 | symbols that start with "func" by looking for where we'd insert | |
3866 | the closest string that would follow "func" in lexicographical | |
3867 | order. Usually, that's "func"-with-last-character-incremented, | |
3868 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3869 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3870 | Especially mind the 0xff character, which is a valid character in | |
3871 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3872 | rule out compilers allowing it in identifiers. Note that | |
3873 | conveniently, strcmp/strcasecmp are specified to compare | |
3874 | characters interpreted as unsigned char. So what we do is treat | |
3875 | the whole string as a base 256 number composed of a sequence of | |
3876 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3877 | to 0, and carries 1 to the following more-significant position. | |
3878 | If the very first character in SEARCH_NAME ends up incremented | |
3879 | and carries/overflows, then the upper bound is the end of the | |
3880 | list. The string after the empty string is also the empty | |
3881 | string. | |
3882 | ||
3883 | Some examples of this operation: | |
3884 | ||
3885 | SEARCH_NAME => "+1" RESULT | |
3886 | ||
3887 | "abc" => "abd" | |
3888 | "ab\xff" => "ac" | |
3889 | "\xff" "a" "\xff" => "\xff" "b" | |
3890 | "\xff" => "" | |
3891 | "\xff\xff" => "" | |
3892 | "" => "" | |
3893 | ||
3894 | Then, with these symbols for example: | |
3895 | ||
3896 | func | |
3897 | func1 | |
3898 | fund | |
3899 | ||
3900 | completing "func" looks for symbols between "func" and | |
3901 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3902 | which finds "func" and "func1", but not "fund". | |
3903 | ||
3904 | And with: | |
3905 | ||
3906 | funcÿ (Latin1 'ÿ' [0xff]) | |
3907 | funcÿ1 | |
3908 | fund | |
3909 | ||
3910 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3911 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3912 | ||
3913 | And with: | |
3914 | ||
3915 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3916 | ÿÿ1 | |
3917 | ||
3918 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3919 | the end of the list. | |
3920 | */ | |
3921 | std::string after = search_name; | |
3922 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3923 | after.pop_back (); | |
3924 | if (!after.empty ()) | |
3925 | after.back () = (unsigned char) after.back () + 1; | |
3926 | return after; | |
3927 | } | |
3928 | ||
5c58de74 | 3929 | /* See declaration. */ |
61d96d7e | 3930 | |
5c58de74 PA |
3931 | std::pair<std::vector<name_component>::const_iterator, |
3932 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3933 | mapped_index_base::find_name_components_bounds |
fcf23d5b SM |
3934 | (const lookup_name_info &lookup_name_without_params, language lang, |
3935 | dwarf2_per_objfile *per_objfile) const | |
3f563c84 | 3936 | { |
5c58de74 PA |
3937 | auto *name_cmp |
3938 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3939 | |
3b00ef10 | 3940 | const char *lang_name |
e0802d59 | 3941 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 3942 | |
3f563c84 PA |
3943 | /* Comparison function object for lower_bound that matches against a |
3944 | given symbol name. */ | |
3945 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3946 | const char *name) | |
3947 | { | |
fcf23d5b | 3948 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3949 | const char *elem_name = elem_qualified + elem.name_offset; |
3950 | return name_cmp (elem_name, name) < 0; | |
3951 | }; | |
3952 | ||
3953 | /* Comparison function object for upper_bound that matches against a | |
3954 | given symbol name. */ | |
3955 | auto lookup_compare_upper = [&] (const char *name, | |
3956 | const name_component &elem) | |
3957 | { | |
fcf23d5b | 3958 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3959 | const char *elem_name = elem_qualified + elem.name_offset; |
3960 | return name_cmp (name, elem_name) < 0; | |
3961 | }; | |
3962 | ||
5c58de74 PA |
3963 | auto begin = this->name_components.begin (); |
3964 | auto end = this->name_components.end (); | |
3f563c84 PA |
3965 | |
3966 | /* Find the lower bound. */ | |
3967 | auto lower = [&] () | |
3968 | { | |
3b00ef10 | 3969 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3970 | return begin; |
3971 | else | |
3b00ef10 | 3972 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
3973 | } (); |
3974 | ||
3975 | /* Find the upper bound. */ | |
3976 | auto upper = [&] () | |
3977 | { | |
5c58de74 | 3978 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 3979 | { |
e1ef7d7a PA |
3980 | /* In completion mode, we want UPPER to point past all |
3981 | symbols names that have the same prefix. I.e., with | |
3982 | these symbols, and completing "func": | |
3983 | ||
3984 | function << lower bound | |
3985 | function1 | |
3986 | other_function << upper bound | |
3987 | ||
3988 | We find the upper bound by looking for the insertion | |
3989 | point of "func"-with-last-character-incremented, | |
3990 | i.e. "fund". */ | |
3b00ef10 | 3991 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 3992 | if (after.empty ()) |
3f563c84 | 3993 | return end; |
e6b2f5ef PA |
3994 | return std::lower_bound (lower, end, after.c_str (), |
3995 | lookup_compare_lower); | |
3f563c84 PA |
3996 | } |
3997 | else | |
3b00ef10 | 3998 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
3999 | } (); |
4000 | ||
5c58de74 PA |
4001 | return {lower, upper}; |
4002 | } | |
4003 | ||
4004 | /* See declaration. */ | |
4005 | ||
4006 | void | |
fcf23d5b | 4007 | mapped_index_base::build_name_components (dwarf2_per_objfile *per_objfile) |
5c58de74 PA |
4008 | { |
4009 | if (!this->name_components.empty ()) | |
4010 | return; | |
4011 | ||
4012 | this->name_components_casing = case_sensitivity; | |
4013 | auto *name_cmp | |
4014 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4015 | ||
4016 | /* The code below only knows how to break apart components of C++ | |
4017 | symbol names (and other languages that use '::' as | |
3b00ef10 | 4018 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
4019 | auto count = this->symbol_name_count (); |
4020 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4021 | { |
44ed8f3e | 4022 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4023 | continue; |
4024 | ||
fcf23d5b | 4025 | const char *name = this->symbol_name_at (idx, per_objfile); |
5c58de74 PA |
4026 | |
4027 | /* Add each name component to the name component table. */ | |
4028 | unsigned int previous_len = 0; | |
3b00ef10 TT |
4029 | |
4030 | if (strstr (name, "::") != nullptr) | |
4031 | { | |
4032 | for (unsigned int current_len = cp_find_first_component (name); | |
4033 | name[current_len] != '\0'; | |
4034 | current_len += cp_find_first_component (name + current_len)) | |
4035 | { | |
4036 | gdb_assert (name[current_len] == ':'); | |
4037 | this->name_components.push_back ({previous_len, idx}); | |
4038 | /* Skip the '::'. */ | |
4039 | current_len += 2; | |
4040 | previous_len = current_len; | |
4041 | } | |
4042 | } | |
4043 | else | |
5c58de74 | 4044 | { |
3b00ef10 TT |
4045 | /* Handle the Ada encoded (aka mangled) form here. */ |
4046 | for (const char *iter = strstr (name, "__"); | |
4047 | iter != nullptr; | |
4048 | iter = strstr (iter, "__")) | |
4049 | { | |
4050 | this->name_components.push_back ({previous_len, idx}); | |
4051 | iter += 2; | |
4052 | previous_len = iter - name; | |
4053 | } | |
5c58de74 | 4054 | } |
3b00ef10 | 4055 | |
5c58de74 PA |
4056 | this->name_components.push_back ({previous_len, idx}); |
4057 | } | |
4058 | ||
4059 | /* Sort name_components elements by name. */ | |
4060 | auto name_comp_compare = [&] (const name_component &left, | |
4061 | const name_component &right) | |
4062 | { | |
fcf23d5b SM |
4063 | const char *left_qualified |
4064 | = this->symbol_name_at (left.idx, per_objfile); | |
4065 | const char *right_qualified | |
4066 | = this->symbol_name_at (right.idx, per_objfile); | |
5c58de74 PA |
4067 | |
4068 | const char *left_name = left_qualified + left.name_offset; | |
4069 | const char *right_name = right_qualified + right.name_offset; | |
4070 | ||
4071 | return name_cmp (left_name, right_name) < 0; | |
4072 | }; | |
4073 | ||
4074 | std::sort (this->name_components.begin (), | |
4075 | this->name_components.end (), | |
4076 | name_comp_compare); | |
4077 | } | |
4078 | ||
4079 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4080 | mapped_index_base instead of the containing objfile. This is split |
4081 | to a separate function in order to be able to unit test the | |
4082 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4083 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4084 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4085 | |
4086 | static void | |
4087 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4088 | (mapped_index_base &index, |
5c58de74 PA |
4089 | const lookup_name_info &lookup_name_in, |
4090 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4091 | enum search_domain kind, | |
fcf23d5b SM |
4092 | gdb::function_view<bool (offset_type)> match_callback, |
4093 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4094 | { |
4095 | lookup_name_info lookup_name_without_params | |
4096 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4097 | |
4098 | /* Build the symbol name component sorted vector, if we haven't | |
4099 | yet. */ | |
fcf23d5b | 4100 | index.build_name_components (per_objfile); |
5c58de74 | 4101 | |
3f563c84 PA |
4102 | /* The same symbol may appear more than once in the range though. |
4103 | E.g., if we're looking for symbols that complete "w", and we have | |
4104 | a symbol named "w1::w2", we'll find the two name components for | |
4105 | that same symbol in the range. To be sure we only call the | |
4106 | callback once per symbol, we first collect the symbol name | |
4107 | indexes that matched in a temporary vector and ignore | |
4108 | duplicates. */ | |
4109 | std::vector<offset_type> matches; | |
3f563c84 | 4110 | |
3b00ef10 TT |
4111 | struct name_and_matcher |
4112 | { | |
4113 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 4114 | const char *name; |
3b00ef10 TT |
4115 | |
4116 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4117 | { |
ecc6c606 | 4118 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
4119 | } |
4120 | }; | |
4121 | ||
4122 | /* A vector holding all the different symbol name matchers, for all | |
4123 | languages. */ | |
4124 | std::vector<name_and_matcher> matchers; | |
4125 | ||
4126 | for (int i = 0; i < nr_languages; i++) | |
4127 | { | |
4128 | enum language lang_e = (enum language) i; | |
4129 | ||
4130 | const language_defn *lang = language_def (lang_e); | |
4131 | symbol_name_matcher_ftype *name_matcher | |
c9debfb9 | 4132 | = lang->get_symbol_name_matcher (lookup_name_without_params); |
3f563c84 | 4133 | |
3b00ef10 TT |
4134 | name_and_matcher key { |
4135 | name_matcher, | |
4136 | lookup_name_without_params.language_lookup_name (lang_e) | |
4137 | }; | |
4138 | ||
4139 | /* Don't insert the same comparison routine more than once. | |
4140 | Note that we do this linear walk. This is not a problem in | |
4141 | practice because the number of supported languages is | |
4142 | low. */ | |
4143 | if (std::find (matchers.begin (), matchers.end (), key) | |
4144 | != matchers.end ()) | |
9291a0cd | 4145 | continue; |
3b00ef10 TT |
4146 | matchers.push_back (std::move (key)); |
4147 | ||
4148 | auto bounds | |
4149 | = index.find_name_components_bounds (lookup_name_without_params, | |
fcf23d5b | 4150 | lang_e, per_objfile); |
3b00ef10 TT |
4151 | |
4152 | /* Now for each symbol name in range, check to see if we have a name | |
4153 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4154 | ||
4155 | for (; bounds.first != bounds.second; ++bounds.first) | |
4156 | { | |
fcf23d5b SM |
4157 | const char *qualified |
4158 | = index.symbol_name_at (bounds.first->idx, per_objfile); | |
3b00ef10 TT |
4159 | |
4160 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4161 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4162 | continue; | |
9291a0cd | 4163 | |
3b00ef10 TT |
4164 | matches.push_back (bounds.first->idx); |
4165 | } | |
3f563c84 PA |
4166 | } |
4167 | ||
4168 | std::sort (matches.begin (), matches.end ()); | |
4169 | ||
4170 | /* Finally call the callback, once per match. */ | |
4171 | ULONGEST prev = -1; | |
4172 | for (offset_type idx : matches) | |
4173 | { | |
4174 | if (prev != idx) | |
4175 | { | |
3b00ef10 TT |
4176 | if (!match_callback (idx)) |
4177 | break; | |
3f563c84 PA |
4178 | prev = idx; |
4179 | } | |
4180 | } | |
4181 | ||
4182 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4183 | (offset_type)-1 are both possible values. */ | |
4184 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4185 | } | |
4186 | ||
c62446b1 PA |
4187 | #if GDB_SELF_TEST |
4188 | ||
4189 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4190 | ||
a3c5fafd PA |
4191 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4192 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4193 | mapped_index_base interface. Builds an index from the symbol list | |
4194 | passed as parameter to the constructor. */ | |
4195 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4196 | { |
4197 | public: | |
a3c5fafd PA |
4198 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4199 | : m_symbol_table (symbols) | |
c62446b1 PA |
4200 | {} |
4201 | ||
a3c5fafd | 4202 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4203 | |
a3c5fafd | 4204 | /* Return the number of names in the symbol table. */ |
632e107b | 4205 | size_t symbol_name_count () const override |
c62446b1 | 4206 | { |
a3c5fafd | 4207 | return m_symbol_table.size (); |
c62446b1 PA |
4208 | } |
4209 | ||
a3c5fafd | 4210 | /* Get the name of the symbol at IDX in the symbol table. */ |
fcf23d5b SM |
4211 | const char *symbol_name_at |
4212 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
a3c5fafd PA |
4213 | { |
4214 | return m_symbol_table[idx]; | |
4215 | } | |
c62446b1 | 4216 | |
a3c5fafd PA |
4217 | private: |
4218 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4219 | }; |
4220 | ||
4221 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4222 | string, to pass to print routines. */ | |
4223 | ||
4224 | static const char * | |
4225 | string_or_null (const char *str) | |
4226 | { | |
4227 | return str != NULL ? str : "<null>"; | |
4228 | } | |
4229 | ||
4230 | /* Check if a lookup_name_info built from | |
4231 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4232 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4233 | matching order. If no match expected, then an empty list is | |
4234 | specified. Returns true on success. On failure prints a warning | |
4235 | indicating the file:line that failed, and returns false. */ | |
4236 | ||
4237 | static bool | |
4238 | check_match (const char *file, int line, | |
4239 | mock_mapped_index &mock_index, | |
4240 | const char *name, symbol_name_match_type match_type, | |
4241 | bool completion_mode, | |
fcf23d5b SM |
4242 | std::initializer_list<const char *> expected_list, |
4243 | dwarf2_per_objfile *per_objfile) | |
c62446b1 PA |
4244 | { |
4245 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4246 | ||
4247 | bool matched = true; | |
4248 | ||
4249 | auto mismatch = [&] (const char *expected_str, | |
4250 | const char *got) | |
4251 | { | |
4252 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4253 | "expected=\"%s\", got=\"%s\"\n"), | |
4254 | file, line, | |
4255 | (match_type == symbol_name_match_type::FULL | |
4256 | ? "FULL" : "WILD"), | |
4257 | name, string_or_null (expected_str), string_or_null (got)); | |
4258 | matched = false; | |
4259 | }; | |
4260 | ||
4261 | auto expected_it = expected_list.begin (); | |
4262 | auto expected_end = expected_list.end (); | |
4263 | ||
a3c5fafd | 4264 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4265 | NULL, ALL_DOMAIN, |
4266 | [&] (offset_type idx) | |
4267 | { | |
fcf23d5b | 4268 | const char *matched_name = mock_index.symbol_name_at (idx, per_objfile); |
c62446b1 PA |
4269 | const char *expected_str |
4270 | = expected_it == expected_end ? NULL : *expected_it++; | |
4271 | ||
4272 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4273 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4274 | return true; |
fcf23d5b | 4275 | }, per_objfile); |
c62446b1 PA |
4276 | |
4277 | const char *expected_str | |
4278 | = expected_it == expected_end ? NULL : *expected_it++; | |
4279 | if (expected_str != NULL) | |
4280 | mismatch (expected_str, NULL); | |
4281 | ||
4282 | return matched; | |
4283 | } | |
4284 | ||
4285 | /* The symbols added to the mock mapped_index for testing (in | |
4286 | canonical form). */ | |
4287 | static const char *test_symbols[] = { | |
4288 | "function", | |
4289 | "std::bar", | |
4290 | "std::zfunction", | |
4291 | "std::zfunction2", | |
4292 | "w1::w2", | |
4293 | "ns::foo<char*>", | |
4294 | "ns::foo<int>", | |
4295 | "ns::foo<long>", | |
a20714ff PA |
4296 | "ns2::tmpl<int>::foo2", |
4297 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4298 | |
e1ef7d7a PA |
4299 | /* These are used to check that the increment-last-char in the |
4300 | matching algorithm for completion doesn't match "t1_fund" when | |
4301 | completing "t1_func". */ | |
4302 | "t1_func", | |
4303 | "t1_func1", | |
4304 | "t1_fund", | |
4305 | "t1_fund1", | |
4306 | ||
4307 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4308 | cp-name-parser understands this as a single identifier ("função" | |
4309 | is "function" in PT). */ | |
4310 | u8"u8função", | |
4311 | ||
4312 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4313 | "yfunc\377", | |
4314 | ||
4315 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4316 | "\377", | |
4317 | "\377\377123", | |
4318 | ||
c62446b1 PA |
4319 | /* A name with all sorts of complications. Starts with "z" to make |
4320 | it easier for the completion tests below. */ | |
4321 | #define Z_SYM_NAME \ | |
4322 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4323 | "::tuple<(anonymous namespace)::ui*, " \ | |
4324 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4325 | ||
4326 | Z_SYM_NAME | |
4327 | }; | |
4328 | ||
a3c5fafd PA |
4329 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4330 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4331 | in completion mode. */ | |
5c58de74 PA |
4332 | |
4333 | static bool | |
a3c5fafd | 4334 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 | 4335 | const char *search_name, |
fcf23d5b SM |
4336 | gdb::array_view<const char *> expected_syms, |
4337 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4338 | { |
4339 | lookup_name_info lookup_name (search_name, | |
4340 | symbol_name_match_type::FULL, true); | |
4341 | ||
3b00ef10 | 4342 | auto bounds = index.find_name_components_bounds (lookup_name, |
fcf23d5b SM |
4343 | language_cplus, |
4344 | per_objfile); | |
5c58de74 PA |
4345 | |
4346 | size_t distance = std::distance (bounds.first, bounds.second); | |
4347 | if (distance != expected_syms.size ()) | |
4348 | return false; | |
4349 | ||
4350 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4351 | { | |
4352 | auto nc_elem = bounds.first + exp_elem; | |
fcf23d5b | 4353 | const char *qualified = index.symbol_name_at (nc_elem->idx, per_objfile); |
5c58de74 PA |
4354 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) |
4355 | return false; | |
4356 | } | |
4357 | ||
4358 | return true; | |
4359 | } | |
4360 | ||
4361 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4362 | method. */ | |
4363 | ||
c62446b1 | 4364 | static void |
5c58de74 PA |
4365 | test_mapped_index_find_name_component_bounds () |
4366 | { | |
4367 | mock_mapped_index mock_index (test_symbols); | |
4368 | ||
fcf23d5b | 4369 | mock_index.build_name_components (NULL /* per_objfile */); |
5c58de74 PA |
4370 | |
4371 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4372 | method in completion mode. */ | |
4373 | { | |
4374 | static const char *expected_syms[] = { | |
4375 | "t1_func", | |
4376 | "t1_func1", | |
5c58de74 PA |
4377 | }; |
4378 | ||
fcf23d5b SM |
4379 | SELF_CHECK (check_find_bounds_finds |
4380 | (mock_index, "t1_func", expected_syms, | |
4381 | NULL /* per_objfile */)); | |
5c58de74 PA |
4382 | } |
4383 | ||
4384 | /* Check that the increment-last-char in the name matching algorithm | |
4385 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4386 | { | |
4387 | static const char *expected_syms1[] = { | |
4388 | "\377", | |
4389 | "\377\377123", | |
4390 | }; | |
fcf23d5b SM |
4391 | SELF_CHECK (check_find_bounds_finds |
4392 | (mock_index, "\377", expected_syms1, NULL /* per_objfile */)); | |
5c58de74 PA |
4393 | |
4394 | static const char *expected_syms2[] = { | |
4395 | "\377\377123", | |
4396 | }; | |
fcf23d5b SM |
4397 | SELF_CHECK (check_find_bounds_finds |
4398 | (mock_index, "\377\377", expected_syms2, | |
4399 | NULL /* per_objfile */)); | |
5c58de74 PA |
4400 | } |
4401 | } | |
4402 | ||
4403 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4404 | ||
4405 | static void | |
4406 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4407 | { |
4408 | mock_mapped_index mock_index (test_symbols); | |
4409 | ||
4410 | /* We let all tests run until the end even if some fails, for debug | |
4411 | convenience. */ | |
4412 | bool any_mismatch = false; | |
4413 | ||
4414 | /* Create the expected symbols list (an initializer_list). Needed | |
4415 | because lists have commas, and we need to pass them to CHECK, | |
4416 | which is a macro. */ | |
4417 | #define EXPECT(...) { __VA_ARGS__ } | |
4418 | ||
4419 | /* Wrapper for check_match that passes down the current | |
4420 | __FILE__/__LINE__. */ | |
4421 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4422 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4423 | mock_index, \ | |
4424 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
fcf23d5b | 4425 | EXPECTED_LIST, NULL) |
c62446b1 PA |
4426 | |
4427 | /* Identity checks. */ | |
4428 | for (const char *sym : test_symbols) | |
4429 | { | |
4430 | /* Should be able to match all existing symbols. */ | |
4431 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4432 | EXPECT (sym)); | |
4433 | ||
4434 | /* Should be able to match all existing symbols with | |
4435 | parameters. */ | |
4436 | std::string with_params = std::string (sym) + "(int)"; | |
4437 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4438 | EXPECT (sym)); | |
4439 | ||
4440 | /* Should be able to match all existing symbols with | |
4441 | parameters and qualifiers. */ | |
4442 | with_params = std::string (sym) + " ( int ) const"; | |
4443 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4444 | EXPECT (sym)); | |
4445 | ||
4446 | /* This should really find sym, but cp-name-parser.y doesn't | |
4447 | know about lvalue/rvalue qualifiers yet. */ | |
4448 | with_params = std::string (sym) + " ( int ) &&"; | |
4449 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4450 | {}); | |
4451 | } | |
4452 | ||
e1ef7d7a PA |
4453 | /* Check that the name matching algorithm for completion doesn't get |
4454 | confused with Latin1 'ÿ' / 0xff. */ | |
4455 | { | |
4456 | static const char str[] = "\377"; | |
4457 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4458 | EXPECT ("\377", "\377\377123")); | |
4459 | } | |
4460 | ||
4461 | /* Check that the increment-last-char in the matching algorithm for | |
4462 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4463 | { | |
4464 | static const char str[] = "t1_func"; | |
4465 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4466 | EXPECT ("t1_func", "t1_func1")); | |
4467 | } | |
4468 | ||
c62446b1 PA |
4469 | /* Check that completion mode works at each prefix of the expected |
4470 | symbol name. */ | |
4471 | { | |
4472 | static const char str[] = "function(int)"; | |
4473 | size_t len = strlen (str); | |
4474 | std::string lookup; | |
4475 | ||
4476 | for (size_t i = 1; i < len; i++) | |
4477 | { | |
4478 | lookup.assign (str, i); | |
4479 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4480 | EXPECT ("function")); | |
4481 | } | |
4482 | } | |
4483 | ||
4484 | /* While "w" is a prefix of both components, the match function | |
4485 | should still only be called once. */ | |
4486 | { | |
4487 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4488 | EXPECT ("w1::w2")); | |
a20714ff PA |
4489 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4490 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4491 | } |
4492 | ||
4493 | /* Same, with a "complicated" symbol. */ | |
4494 | { | |
4495 | static const char str[] = Z_SYM_NAME; | |
4496 | size_t len = strlen (str); | |
4497 | std::string lookup; | |
4498 | ||
4499 | for (size_t i = 1; i < len; i++) | |
4500 | { | |
4501 | lookup.assign (str, i); | |
4502 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4503 | EXPECT (Z_SYM_NAME)); | |
4504 | } | |
4505 | } | |
4506 | ||
4507 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4508 | { | |
4509 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4510 | {}); | |
4511 | } | |
4512 | ||
4513 | /* A complete symbol with parameters matches any overload, since the | |
4514 | index has no overload info. */ | |
4515 | { | |
4516 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4517 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4518 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4519 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4520 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4521 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4522 | } |
4523 | ||
4524 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4525 | template argument list. */ | |
4526 | { | |
4527 | static const char expected[] = "ns::foo<int>"; | |
4528 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4529 | EXPECT (expected)); | |
a20714ff PA |
4530 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4531 | EXPECT (expected)); | |
c62446b1 PA |
4532 | } |
4533 | ||
4534 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4535 | template argument list that includes a pointer. */ | |
4536 | { | |
4537 | static const char expected[] = "ns::foo<char*>"; | |
4538 | /* Try both completion and non-completion modes. */ | |
4539 | static const bool completion_mode[2] = {false, true}; | |
4540 | for (size_t i = 0; i < 2; i++) | |
4541 | { | |
4542 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4543 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4544 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4545 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4546 | |
4547 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4548 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4549 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4550 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4551 | } |
4552 | } | |
4553 | ||
4554 | { | |
4555 | /* Check method qualifiers are ignored. */ | |
4556 | static const char expected[] = "ns::foo<char*>"; | |
4557 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4558 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4559 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4560 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4561 | CHECK_MATCH ("foo < char * > ( int ) const", |
4562 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4563 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4564 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4565 | } |
4566 | ||
4567 | /* Test lookup names that don't match anything. */ | |
4568 | { | |
a20714ff PA |
4569 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4570 | {}); | |
4571 | ||
c62446b1 PA |
4572 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4573 | {}); | |
4574 | } | |
4575 | ||
a20714ff PA |
4576 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4577 | which should not be confused with a parameter list. */ | |
4578 | { | |
4579 | static const char *syms[] = { | |
4580 | "A::B::C", | |
4581 | "B::C", | |
4582 | "C", | |
4583 | "A :: B :: C ( int )", | |
4584 | "B :: C ( int )", | |
4585 | "C ( int )", | |
4586 | }; | |
4587 | ||
4588 | for (const char *s : syms) | |
4589 | { | |
4590 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4591 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4592 | } | |
4593 | } | |
4594 | ||
4595 | { | |
4596 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4597 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4598 | EXPECT (expected)); | |
4599 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4600 | EXPECT (expected)); | |
4601 | } | |
4602 | ||
c62446b1 PA |
4603 | SELF_CHECK (!any_mismatch); |
4604 | ||
4605 | #undef EXPECT | |
4606 | #undef CHECK_MATCH | |
4607 | } | |
4608 | ||
5c58de74 PA |
4609 | static void |
4610 | run_test () | |
4611 | { | |
4612 | test_mapped_index_find_name_component_bounds (); | |
4613 | test_dw2_expand_symtabs_matching_symbol (); | |
4614 | } | |
4615 | ||
c62446b1 PA |
4616 | }} // namespace selftests::dw2_expand_symtabs_matching |
4617 | ||
4618 | #endif /* GDB_SELF_TEST */ | |
4619 | ||
4b514bc8 JK |
4620 | /* If FILE_MATCHER is NULL or if PER_CU has |
4621 | dwarf2_per_cu_quick_data::MARK set (see | |
4622 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4623 | EXPANSION_NOTIFY on it. */ | |
4624 | ||
4625 | static void | |
4626 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
4627 | (dwarf2_per_cu_data *per_cu, |
4628 | dwarf2_per_objfile *per_objfile, | |
4b514bc8 JK |
4629 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4630 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4631 | { | |
4632 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4633 | { | |
af758d11 | 4634 | bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); |
4b514bc8 | 4635 | |
97a1449a SM |
4636 | compunit_symtab *symtab |
4637 | = dw2_instantiate_symtab (per_cu, per_objfile, false); | |
af758d11 | 4638 | gdb_assert (symtab != nullptr); |
4b514bc8 | 4639 | |
af758d11 SM |
4640 | if (expansion_notify != NULL && symtab_was_null) |
4641 | expansion_notify (symtab); | |
4b514bc8 JK |
4642 | } |
4643 | } | |
4644 | ||
3f563c84 PA |
4645 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4646 | matched, to expand corresponding CUs that were marked. IDX is the | |
4647 | index of the symbol name that matched. */ | |
4648 | ||
4649 | static void | |
4650 | dw2_expand_marked_cus | |
976ca316 | 4651 | (dwarf2_per_objfile *per_objfile, offset_type idx, |
3f563c84 PA |
4652 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4653 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4654 | search_domain kind) | |
4655 | { | |
3f563c84 PA |
4656 | offset_type *vec, vec_len, vec_idx; |
4657 | bool global_seen = false; | |
976ca316 | 4658 | mapped_index &index = *per_objfile->per_bfd->index_table; |
3f563c84 | 4659 | |
61920122 | 4660 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4661 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4662 | vec_len = MAYBE_SWAP (vec[0]); |
4663 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4664 | { | |
61920122 PA |
4665 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4666 | /* This value is only valid for index versions >= 7. */ | |
4667 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4668 | gdb_index_symbol_kind symbol_kind = | |
4669 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4670 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4671 | /* Only check the symbol attributes if they're present. | |
4672 | Indices prior to version 7 don't record them, | |
4673 | and indices >= 7 may elide them for certain symbols | |
4674 | (gold does this). */ | |
4675 | int attrs_valid = | |
4676 | (index.version >= 7 | |
4677 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4678 | ||
4679 | /* Work around gold/15646. */ | |
f030440d TV |
4680 | if (attrs_valid |
4681 | && !is_static | |
4682 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
9291a0cd | 4683 | { |
f030440d | 4684 | if (global_seen) |
61920122 | 4685 | continue; |
f030440d TV |
4686 | |
4687 | global_seen = true; | |
61920122 | 4688 | } |
3190f0c6 | 4689 | |
61920122 PA |
4690 | /* Only check the symbol's kind if it has one. */ |
4691 | if (attrs_valid) | |
4692 | { | |
4693 | switch (kind) | |
8943b874 | 4694 | { |
61920122 PA |
4695 | case VARIABLES_DOMAIN: |
4696 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4697 | continue; | |
4698 | break; | |
4699 | case FUNCTIONS_DOMAIN: | |
4700 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4701 | continue; |
61920122 PA |
4702 | break; |
4703 | case TYPES_DOMAIN: | |
4704 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4705 | continue; | |
4706 | break; | |
59c35742 AB |
4707 | case MODULES_DOMAIN: |
4708 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4709 | continue; | |
4710 | break; | |
61920122 PA |
4711 | default: |
4712 | break; | |
8943b874 | 4713 | } |
61920122 | 4714 | } |
8943b874 | 4715 | |
61920122 | 4716 | /* Don't crash on bad data. */ |
976ca316 SM |
4717 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
4718 | + per_objfile->per_bfd->all_type_units.size ())) | |
61920122 | 4719 | { |
b98664d3 | 4720 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 4721 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
61920122 PA |
4722 | continue; |
4723 | } | |
4724 | ||
976ca316 SM |
4725 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
4726 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, | |
4b514bc8 | 4727 | expansion_notify); |
61920122 PA |
4728 | } |
4729 | } | |
4730 | ||
4b514bc8 JK |
4731 | /* If FILE_MATCHER is non-NULL, set all the |
4732 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4733 | that match FILE_MATCHER. */ | |
4734 | ||
61920122 | 4735 | static void |
4b514bc8 | 4736 | dw_expand_symtabs_matching_file_matcher |
976ca316 | 4737 | (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 4738 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) |
61920122 | 4739 | { |
4b514bc8 | 4740 | if (file_matcher == NULL) |
61920122 PA |
4741 | return; |
4742 | ||
4b514bc8 JK |
4743 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4744 | htab_eq_pointer, | |
4745 | NULL, xcalloc, xfree)); | |
4746 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4747 | htab_eq_pointer, |
4748 | NULL, xcalloc, xfree)); | |
61920122 | 4749 | |
4b514bc8 JK |
4750 | /* The rule is CUs specify all the files, including those used by |
4751 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4752 | |
976ca316 | 4753 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4754 | { |
927aa2e7 JK |
4755 | QUIT; |
4756 | ||
4757 | per_cu->v.quick->mark = 0; | |
4758 | ||
4759 | /* We only need to look at symtabs not already expanded. */ | |
976ca316 | 4760 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4761 | continue; |
4762 | ||
976ca316 | 4763 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4764 | if (file_data == NULL) |
4765 | continue; | |
4766 | ||
4767 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4768 | continue; | |
4769 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4770 | { | |
4771 | per_cu->v.quick->mark = 1; | |
4772 | continue; | |
4773 | } | |
4774 | ||
b76e467d | 4775 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4776 | { |
4777 | const char *this_real_name; | |
4778 | ||
4779 | if (file_matcher (file_data->file_names[j], false)) | |
4780 | { | |
4781 | per_cu->v.quick->mark = 1; | |
4782 | break; | |
4783 | } | |
4784 | ||
4785 | /* Before we invoke realpath, which can get expensive when many | |
4786 | files are involved, do a quick comparison of the basenames. */ | |
4787 | if (!basenames_may_differ | |
4788 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4789 | true)) | |
4790 | continue; | |
4791 | ||
976ca316 | 4792 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
927aa2e7 JK |
4793 | if (file_matcher (this_real_name, false)) |
4794 | { | |
4795 | per_cu->v.quick->mark = 1; | |
4796 | break; | |
4797 | } | |
4798 | } | |
4799 | ||
b76e467d SM |
4800 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4801 | ? visited_found.get () | |
4802 | : visited_not_found.get (), | |
4803 | file_data, INSERT); | |
927aa2e7 JK |
4804 | *slot = file_data; |
4805 | } | |
4806 | } | |
4807 | ||
4808 | static void | |
4809 | dw2_expand_symtabs_matching | |
4810 | (struct objfile *objfile, | |
4811 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 4812 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
4813 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
4814 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4815 | enum search_domain kind) | |
4816 | { | |
976ca316 | 4817 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 JK |
4818 | |
4819 | /* index_table is NULL if OBJF_READNOW. */ | |
976ca316 | 4820 | if (!per_objfile->per_bfd->index_table) |
927aa2e7 JK |
4821 | return; |
4822 | ||
976ca316 | 4823 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
927aa2e7 | 4824 | |
c1a66c06 TV |
4825 | if (symbol_matcher == NULL && lookup_name == NULL) |
4826 | { | |
976ca316 | 4827 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
4828 | { |
4829 | QUIT; | |
4830 | ||
976ca316 | 4831 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, |
97a1449a | 4832 | file_matcher, expansion_notify); |
c1a66c06 TV |
4833 | } |
4834 | return; | |
4835 | } | |
4836 | ||
976ca316 | 4837 | mapped_index &index = *per_objfile->per_bfd->index_table; |
927aa2e7 | 4838 | |
c1a66c06 | 4839 | dw2_expand_symtabs_matching_symbol (index, *lookup_name, |
927aa2e7 JK |
4840 | symbol_matcher, |
4841 | kind, [&] (offset_type idx) | |
4842 | { | |
976ca316 SM |
4843 | dw2_expand_marked_cus (per_objfile, idx, file_matcher, expansion_notify, |
4844 | kind); | |
3b00ef10 | 4845 | return true; |
976ca316 | 4846 | }, per_objfile); |
927aa2e7 JK |
4847 | } |
4848 | ||
4849 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4850 | symtab. */ | |
4851 | ||
4852 | static struct compunit_symtab * | |
4853 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4854 | CORE_ADDR pc) | |
4855 | { | |
4856 | int i; | |
4857 | ||
4858 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4859 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4860 | return cust; | |
4861 | ||
4862 | if (cust->includes == NULL) | |
4863 | return NULL; | |
4864 | ||
4865 | for (i = 0; cust->includes[i]; ++i) | |
4866 | { | |
4867 | struct compunit_symtab *s = cust->includes[i]; | |
4868 | ||
4869 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4870 | if (s != NULL) | |
4871 | return s; | |
4872 | } | |
4873 | ||
4874 | return NULL; | |
4875 | } | |
4876 | ||
4877 | static struct compunit_symtab * | |
4878 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4879 | struct bound_minimal_symbol msymbol, | |
4880 | CORE_ADDR pc, | |
4881 | struct obj_section *section, | |
4882 | int warn_if_readin) | |
4883 | { | |
4884 | struct dwarf2_per_cu_data *data; | |
4885 | struct compunit_symtab *result; | |
4886 | ||
d320c2b5 | 4887 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4888 | return NULL; |
4889 | ||
b3b3bada | 4890 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
4891 | data = (struct dwarf2_per_cu_data *) addrmap_find |
4892 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
4893 | if (!data) |
4894 | return NULL; | |
4895 | ||
af758d11 SM |
4896 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
4897 | if (warn_if_readin && per_objfile->symtab_set_p (data)) | |
927aa2e7 | 4898 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
08feed99 | 4899 | paddress (objfile->arch (), pc)); |
927aa2e7 | 4900 | |
97a1449a SM |
4901 | result = recursively_find_pc_sect_compunit_symtab |
4902 | (dw2_instantiate_symtab (data, per_objfile, false), pc); | |
4903 | ||
927aa2e7 JK |
4904 | gdb_assert (result != NULL); |
4905 | return result; | |
4906 | } | |
4907 | ||
4908 | static void | |
4909 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
4910 | void *data, int need_fullname) | |
4911 | { | |
976ca316 | 4912 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 | 4913 | |
976ca316 | 4914 | if (!per_objfile->per_bfd->filenames_cache) |
927aa2e7 | 4915 | { |
976ca316 | 4916 | per_objfile->per_bfd->filenames_cache.emplace (); |
927aa2e7 JK |
4917 | |
4918 | htab_up visited (htab_create_alloc (10, | |
4919 | htab_hash_pointer, htab_eq_pointer, | |
4920 | NULL, xcalloc, xfree)); | |
4921 | ||
4922 | /* The rule is CUs specify all the files, including those used | |
4923 | by any TU, so there's no need to scan TUs here. We can | |
4924 | ignore file names coming from already-expanded CUs. */ | |
4925 | ||
976ca316 | 4926 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4927 | { |
976ca316 | 4928 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4929 | { |
4930 | void **slot = htab_find_slot (visited.get (), | |
4931 | per_cu->v.quick->file_names, | |
4932 | INSERT); | |
4933 | ||
4934 | *slot = per_cu->v.quick->file_names; | |
4935 | } | |
4936 | } | |
4937 | ||
976ca316 | 4938 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4939 | { |
927aa2e7 | 4940 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 4941 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4942 | continue; |
4943 | ||
ab432490 | 4944 | quick_file_names *file_data |
976ca316 | 4945 | = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4946 | if (file_data == NULL) |
4947 | continue; | |
4948 | ||
b76e467d | 4949 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4950 | if (*slot) |
4951 | { | |
4952 | /* Already visited. */ | |
4953 | continue; | |
4954 | } | |
4955 | *slot = file_data; | |
4956 | ||
4957 | for (int j = 0; j < file_data->num_file_names; ++j) | |
4958 | { | |
4959 | const char *filename = file_data->file_names[j]; | |
976ca316 | 4960 | per_objfile->per_bfd->filenames_cache->seen (filename); |
927aa2e7 JK |
4961 | } |
4962 | } | |
4963 | } | |
4964 | ||
976ca316 | 4965 | per_objfile->per_bfd->filenames_cache->traverse ([&] (const char *filename) |
927aa2e7 JK |
4966 | { |
4967 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
4968 | ||
4969 | if (need_fullname) | |
4970 | this_real_name = gdb_realpath (filename); | |
4971 | (*fun) (filename, this_real_name.get (), data); | |
4972 | }); | |
4973 | } | |
4974 | ||
4975 | static int | |
4976 | dw2_has_symbols (struct objfile *objfile) | |
4977 | { | |
4978 | return 1; | |
4979 | } | |
4980 | ||
4981 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4982 | { | |
4983 | dw2_has_symbols, | |
4984 | dw2_find_last_source_symtab, | |
4985 | dw2_forget_cached_source_info, | |
4986 | dw2_map_symtabs_matching_filename, | |
4987 | dw2_lookup_symbol, | |
d3214198 | 4988 | NULL, |
927aa2e7 JK |
4989 | dw2_print_stats, |
4990 | dw2_dump, | |
927aa2e7 JK |
4991 | dw2_expand_symtabs_for_function, |
4992 | dw2_expand_all_symtabs, | |
4993 | dw2_expand_symtabs_with_fullname, | |
4994 | dw2_map_matching_symbols, | |
4995 | dw2_expand_symtabs_matching, | |
4996 | dw2_find_pc_sect_compunit_symtab, | |
4997 | NULL, | |
4998 | dw2_map_symbol_filenames | |
4999 | }; | |
5000 | ||
5001 | /* DWARF-5 debug_names reader. */ | |
5002 | ||
5003 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5004 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5005 | ||
5006 | /* A helper function that reads the .debug_names section in SECTION | |
5007 | and fills in MAP. FILENAME is the name of the file containing the | |
5008 | section; it is used for error reporting. | |
5009 | ||
5010 | Returns true if all went well, false otherwise. */ | |
5011 | ||
5012 | static bool | |
5013 | read_debug_names_from_section (struct objfile *objfile, | |
5014 | const char *filename, | |
5015 | struct dwarf2_section_info *section, | |
5016 | mapped_debug_names &map) | |
5017 | { | |
96b79293 | 5018 | if (section->empty ()) |
927aa2e7 JK |
5019 | return false; |
5020 | ||
5021 | /* Older elfutils strip versions could keep the section in the main | |
5022 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5023 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
5024 | return false; |
5025 | ||
96b79293 | 5026 | section->read (objfile); |
927aa2e7 | 5027 | |
08feed99 | 5028 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
5029 | |
5030 | const gdb_byte *addr = section->buffer; | |
5031 | ||
96b79293 | 5032 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
5033 | |
5034 | unsigned int bytes_read; | |
5035 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5036 | addr += bytes_read; | |
5037 | ||
5038 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5039 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5040 | if (bytes_read + length != section->size) | |
5041 | { | |
5042 | /* There may be multiple per-CU indices. */ | |
5043 | warning (_("Section .debug_names in %s length %s does not match " | |
5044 | "section length %s, ignoring .debug_names."), | |
5045 | filename, plongest (bytes_read + length), | |
5046 | pulongest (section->size)); | |
5047 | return false; | |
5048 | } | |
5049 | ||
5050 | /* The version number. */ | |
5051 | uint16_t version = read_2_bytes (abfd, addr); | |
5052 | addr += 2; | |
5053 | if (version != 5) | |
5054 | { | |
5055 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5056 | "ignoring .debug_names."), | |
5057 | filename, version); | |
5058 | return false; | |
5059 | } | |
5060 | ||
5061 | /* Padding. */ | |
5062 | uint16_t padding = read_2_bytes (abfd, addr); | |
5063 | addr += 2; | |
5064 | if (padding != 0) | |
5065 | { | |
5066 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5067 | "ignoring .debug_names."), | |
5068 | filename, padding); | |
5069 | return false; | |
5070 | } | |
5071 | ||
5072 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5073 | map.cu_count = read_4_bytes (abfd, addr); | |
5074 | addr += 4; | |
5075 | ||
5076 | /* local_type_unit_count - The number of TUs in the local TU | |
5077 | list. */ | |
5078 | map.tu_count = read_4_bytes (abfd, addr); | |
5079 | addr += 4; | |
5080 | ||
5081 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5082 | list. */ | |
5083 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5084 | addr += 4; | |
5085 | if (foreign_tu_count != 0) | |
5086 | { | |
5087 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5088 | "ignoring .debug_names."), | |
5089 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5090 | return false; | |
5091 | } | |
5092 | ||
5093 | /* bucket_count - The number of hash buckets in the hash lookup | |
5094 | table. */ | |
5095 | map.bucket_count = read_4_bytes (abfd, addr); | |
5096 | addr += 4; | |
5097 | ||
5098 | /* name_count - The number of unique names in the index. */ | |
5099 | map.name_count = read_4_bytes (abfd, addr); | |
5100 | addr += 4; | |
5101 | ||
5102 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5103 | table. */ | |
5104 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5105 | addr += 4; | |
5106 | ||
5107 | /* augmentation_string_size - The size in bytes of the augmentation | |
5108 | string. This value is rounded up to a multiple of 4. */ | |
5109 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5110 | addr += 4; | |
5111 | map.augmentation_is_gdb = ((augmentation_string_size | |
5112 | == sizeof (dwarf5_augmentation)) | |
5113 | && memcmp (addr, dwarf5_augmentation, | |
5114 | sizeof (dwarf5_augmentation)) == 0); | |
5115 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5116 | addr += augmentation_string_size; | |
5117 | ||
5118 | /* List of CUs */ | |
5119 | map.cu_table_reordered = addr; | |
5120 | addr += map.cu_count * map.offset_size; | |
5121 | ||
5122 | /* List of Local TUs */ | |
5123 | map.tu_table_reordered = addr; | |
5124 | addr += map.tu_count * map.offset_size; | |
5125 | ||
5126 | /* Hash Lookup Table */ | |
5127 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5128 | addr += map.bucket_count * 4; | |
5129 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5130 | addr += map.name_count * 4; | |
5131 | ||
5132 | /* Name Table */ | |
5133 | map.name_table_string_offs_reordered = addr; | |
5134 | addr += map.name_count * map.offset_size; | |
5135 | map.name_table_entry_offs_reordered = addr; | |
5136 | addr += map.name_count * map.offset_size; | |
5137 | ||
5138 | const gdb_byte *abbrev_table_start = addr; | |
5139 | for (;;) | |
5140 | { | |
927aa2e7 JK |
5141 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5142 | addr += bytes_read; | |
5143 | if (index_num == 0) | |
5144 | break; | |
5145 | ||
5146 | const auto insertpair | |
5147 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5148 | if (!insertpair.second) | |
5149 | { | |
5150 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5151 | "ignoring .debug_names."), | |
5152 | filename, pulongest (index_num)); | |
5153 | return false; | |
5154 | } | |
5155 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5156 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5157 | addr += bytes_read; | |
5158 | ||
5159 | for (;;) | |
5160 | { | |
5161 | mapped_debug_names::index_val::attr attr; | |
5162 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5163 | addr += bytes_read; | |
5164 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5165 | addr += bytes_read; | |
5166 | if (attr.form == DW_FORM_implicit_const) | |
5167 | { | |
5168 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5169 | &bytes_read); | |
5170 | addr += bytes_read; | |
5171 | } | |
5172 | if (attr.dw_idx == 0 && attr.form == 0) | |
5173 | break; | |
5174 | indexval.attr_vec.push_back (std::move (attr)); | |
5175 | } | |
5176 | } | |
5177 | if (addr != abbrev_table_start + abbrev_table_size) | |
5178 | { | |
5179 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5180 | "of size %s vs. written as %u, ignoring .debug_names."), |
5181 | filename, plongest (addr - abbrev_table_start), | |
5182 | abbrev_table_size); | |
927aa2e7 JK |
5183 | return false; |
5184 | } | |
5185 | map.entry_pool = addr; | |
5186 | ||
5187 | return true; | |
5188 | } | |
5189 | ||
5190 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5191 | list. */ | |
5192 | ||
5193 | static void | |
168c9250 | 5194 | create_cus_from_debug_names_list (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5195 | const mapped_debug_names &map, |
5196 | dwarf2_section_info §ion, | |
b76e467d | 5197 | bool is_dwz) |
927aa2e7 | 5198 | { |
3ee6bb11 TV |
5199 | if (!map.augmentation_is_gdb) |
5200 | { | |
5201 | for (uint32_t i = 0; i < map.cu_count; ++i) | |
5202 | { | |
5203 | sect_offset sect_off | |
5204 | = (sect_offset) (extract_unsigned_integer | |
5205 | (map.cu_table_reordered + i * map.offset_size, | |
5206 | map.offset_size, | |
5207 | map.dwarf5_byte_order)); | |
5208 | /* We don't know the length of the CU, because the CU list in a | |
5209 | .debug_names index can be incomplete, so we can't use the start of | |
5210 | the next CU as end of this CU. We create the CUs here with length 0, | |
5211 | and in cutu_reader::cutu_reader we'll fill in the actual length. */ | |
5212 | dwarf2_per_cu_data *per_cu | |
168c9250 SM |
5213 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, sect_off, 0); |
5214 | per_bfd->all_comp_units.push_back (per_cu); | |
3ee6bb11 TV |
5215 | } |
5216 | } | |
5217 | ||
927aa2e7 JK |
5218 | sect_offset sect_off_prev; |
5219 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5220 | { | |
5221 | sect_offset sect_off_next; | |
5222 | if (i < map.cu_count) | |
5223 | { | |
5224 | sect_off_next | |
5225 | = (sect_offset) (extract_unsigned_integer | |
5226 | (map.cu_table_reordered + i * map.offset_size, | |
5227 | map.offset_size, | |
5228 | map.dwarf5_byte_order)); | |
5229 | } | |
5230 | else | |
5231 | sect_off_next = (sect_offset) section.size; | |
5232 | if (i >= 1) | |
5233 | { | |
5234 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5235 | dwarf2_per_cu_data *per_cu |
168c9250 | 5236 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
927aa2e7 | 5237 | sect_off_prev, length); |
168c9250 | 5238 | per_bfd->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5239 | } |
5240 | sect_off_prev = sect_off_next; | |
5241 | } | |
5242 | } | |
5243 | ||
5244 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5245 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5246 | |
5247 | static void | |
168c9250 | 5248 | create_cus_from_debug_names (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5249 | const mapped_debug_names &map, |
5250 | const mapped_debug_names &dwz_map) | |
5251 | { | |
168c9250 SM |
5252 | gdb_assert (per_bfd->all_comp_units.empty ()); |
5253 | per_bfd->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5254 | |
168c9250 | 5255 | create_cus_from_debug_names_list (per_bfd, map, per_bfd->info, |
b76e467d | 5256 | false /* is_dwz */); |
927aa2e7 JK |
5257 | |
5258 | if (dwz_map.cu_count == 0) | |
5259 | return; | |
5260 | ||
168c9250 SM |
5261 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
5262 | create_cus_from_debug_names_list (per_bfd, dwz_map, dwz->info, | |
b76e467d | 5263 | true /* is_dwz */); |
927aa2e7 JK |
5264 | } |
5265 | ||
5266 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5267 | elements of all the CUs and return true. Otherwise, return false. */ | |
5268 | ||
5269 | static bool | |
976ca316 | 5270 | dwarf2_read_debug_names (dwarf2_per_objfile *per_objfile) |
927aa2e7 | 5271 | { |
fcf23d5b SM |
5272 | std::unique_ptr<mapped_debug_names> map (new mapped_debug_names); |
5273 | mapped_debug_names dwz_map; | |
976ca316 | 5274 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 5275 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
927aa2e7 JK |
5276 | |
5277 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
976ca316 | 5278 | &per_objfile->per_bfd->debug_names, *map)) |
927aa2e7 JK |
5279 | return false; |
5280 | ||
5281 | /* Don't use the index if it's empty. */ | |
22ca247e | 5282 | if (map->name_count == 0) |
927aa2e7 JK |
5283 | return false; |
5284 | ||
5285 | /* If there is a .dwz file, read it so we can get its CU list as | |
5286 | well. */ | |
f8c41851 | 5287 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
927aa2e7 JK |
5288 | if (dwz != NULL) |
5289 | { | |
5290 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5291 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5292 | &dwz->debug_names, dwz_map)) |
5293 | { | |
5294 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5295 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5296 | return false; |
5297 | } | |
5298 | } | |
5299 | ||
f8c41851 | 5300 | create_cus_from_debug_names (per_bfd, *map, dwz_map); |
927aa2e7 | 5301 | |
22ca247e | 5302 | if (map->tu_count != 0) |
927aa2e7 JK |
5303 | { |
5304 | /* We can only handle a single .debug_types when we have an | |
5305 | index. */ | |
f8c41851 | 5306 | if (per_bfd->types.size () != 1) |
927aa2e7 JK |
5307 | return false; |
5308 | ||
f8c41851 | 5309 | dwarf2_section_info *section = &per_bfd->types[0]; |
927aa2e7 JK |
5310 | |
5311 | create_signatured_type_table_from_debug_names | |
f8c41851 | 5312 | (per_objfile, *map, section, &per_bfd->abbrev); |
927aa2e7 JK |
5313 | } |
5314 | ||
f8c41851 | 5315 | create_addrmap_from_aranges (per_objfile, &per_bfd->debug_aranges); |
927aa2e7 | 5316 | |
f8c41851 SM |
5317 | per_bfd->debug_names_table = std::move (map); |
5318 | per_bfd->using_index = 1; | |
5319 | per_bfd->quick_file_names_table = | |
976ca316 | 5320 | create_quick_file_names_table (per_objfile->per_bfd->all_comp_units.size ()); |
927aa2e7 | 5321 | |
f8c41851 SM |
5322 | /* Save partial symtabs in the per_bfd object, for the benefit of subsequent |
5323 | objfiles using the same BFD. */ | |
5324 | gdb_assert (per_bfd->partial_symtabs == nullptr); | |
5325 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
5326 | ||
927aa2e7 JK |
5327 | return true; |
5328 | } | |
5329 | ||
927aa2e7 JK |
5330 | /* Type used to manage iterating over all CUs looking for a symbol for |
5331 | .debug_names. */ | |
5332 | ||
5333 | class dw2_debug_names_iterator | |
5334 | { | |
5335 | public: | |
927aa2e7 | 5336 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5337 | gdb::optional<block_enum> block_index, |
5338 | domain_enum domain, | |
fcf23d5b | 5339 | const char *name, dwarf2_per_objfile *per_objfile) |
2b79f376 | 5340 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5341 | m_addr (find_vec_in_debug_names (map, name, per_objfile)), |
5342 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5343 | {} |
5344 | ||
5345 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
fcf23d5b | 5346 | search_domain search, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5347 | : m_map (map), |
5348 | m_search (search), | |
fcf23d5b SM |
5349 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5350 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5351 | {} |
5352 | ||
3b00ef10 TT |
5353 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5354 | block_enum block_index, domain_enum domain, | |
fcf23d5b | 5355 | uint32_t namei, dwarf2_per_objfile *per_objfile) |
3b00ef10 | 5356 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5357 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5358 | m_per_objfile (per_objfile) | |
3b00ef10 TT |
5359 | {} |
5360 | ||
927aa2e7 JK |
5361 | /* Return the next matching CU or NULL if there are no more. */ |
5362 | dwarf2_per_cu_data *next (); | |
5363 | ||
5364 | private: | |
5365 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
976ca316 SM |
5366 | const char *name, |
5367 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 | 5368 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, |
976ca316 SM |
5369 | uint32_t namei, |
5370 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 JK |
5371 | |
5372 | /* The internalized form of .debug_names. */ | |
5373 | const mapped_debug_names &m_map; | |
5374 | ||
2b79f376 SM |
5375 | /* If set, only look for symbols that match that block. Valid values are |
5376 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5377 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5378 | |
5379 | /* The kind of symbol we're looking for. */ | |
5380 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5381 | const search_domain m_search = ALL_DOMAIN; | |
5382 | ||
5383 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5384 | not found. */ | |
5385 | const gdb_byte *m_addr; | |
fcf23d5b SM |
5386 | |
5387 | dwarf2_per_objfile *m_per_objfile; | |
927aa2e7 JK |
5388 | }; |
5389 | ||
5390 | const char * | |
fcf23d5b | 5391 | mapped_debug_names::namei_to_name |
976ca316 | 5392 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const |
927aa2e7 JK |
5393 | { |
5394 | const ULONGEST namei_string_offs | |
5395 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5396 | + namei * offset_size), | |
5397 | offset_size, | |
5398 | dwarf5_byte_order); | |
976ca316 | 5399 | return read_indirect_string_at_offset (per_objfile, namei_string_offs); |
927aa2e7 JK |
5400 | } |
5401 | ||
5402 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5403 | found, return pointer to its pool data. If NAME cannot be found, | |
5404 | return NULL. */ | |
5405 | ||
5406 | const gdb_byte * | |
5407 | dw2_debug_names_iterator::find_vec_in_debug_names | |
976ca316 SM |
5408 | (const mapped_debug_names &map, const char *name, |
5409 | dwarf2_per_objfile *per_objfile) | |
927aa2e7 JK |
5410 | { |
5411 | int (*cmp) (const char *, const char *); | |
5412 | ||
54ee4252 | 5413 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5414 | if (current_language->la_language == language_cplus |
5415 | || current_language->la_language == language_fortran | |
5416 | || current_language->la_language == language_d) | |
5417 | { | |
5418 | /* NAME is already canonical. Drop any qualifiers as | |
5419 | .debug_names does not contain any. */ | |
5420 | ||
5421 | if (strchr (name, '(') != NULL) | |
5422 | { | |
54ee4252 | 5423 | without_params = cp_remove_params (name); |
927aa2e7 | 5424 | if (without_params != NULL) |
54ee4252 | 5425 | name = without_params.get (); |
927aa2e7 JK |
5426 | } |
5427 | } | |
5428 | ||
5429 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5430 | ||
5431 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5432 | uint32_t namei | |
5433 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5434 | (map.bucket_table_reordered | |
5435 | + (full_hash % map.bucket_count)), 4, | |
5436 | map.dwarf5_byte_order); | |
5437 | if (namei == 0) | |
5438 | return NULL; | |
5439 | --namei; | |
5440 | if (namei >= map.name_count) | |
5441 | { | |
b98664d3 | 5442 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5443 | "[in module %s]"), |
5444 | namei, map.name_count, | |
fcf23d5b | 5445 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5446 | return NULL; |
5447 | } | |
5448 | ||
5449 | for (;;) | |
5450 | { | |
5451 | const uint32_t namei_full_hash | |
5452 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5453 | (map.hash_table_reordered + namei), 4, | |
5454 | map.dwarf5_byte_order); | |
5455 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5456 | return NULL; | |
5457 | ||
5458 | if (full_hash == namei_full_hash) | |
5459 | { | |
fcf23d5b | 5460 | const char *const namei_string = map.namei_to_name (namei, per_objfile); |
927aa2e7 JK |
5461 | |
5462 | #if 0 /* An expensive sanity check. */ | |
5463 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5464 | { | |
b98664d3 | 5465 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5466 | "[in module %s]"), |
5467 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5468 | return NULL; | |
5469 | } | |
5470 | #endif | |
5471 | ||
5472 | if (cmp (namei_string, name) == 0) | |
5473 | { | |
5474 | const ULONGEST namei_entry_offs | |
5475 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5476 | + namei * map.offset_size), | |
5477 | map.offset_size, map.dwarf5_byte_order); | |
5478 | return map.entry_pool + namei_entry_offs; | |
5479 | } | |
5480 | } | |
5481 | ||
5482 | ++namei; | |
5483 | if (namei >= map.name_count) | |
5484 | return NULL; | |
5485 | } | |
5486 | } | |
5487 | ||
5488 | const gdb_byte * | |
5489 | dw2_debug_names_iterator::find_vec_in_debug_names | |
fcf23d5b | 5490 | (const mapped_debug_names &map, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5491 | { |
5492 | if (namei >= map.name_count) | |
5493 | { | |
b98664d3 | 5494 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5495 | "[in module %s]"), |
5496 | namei, map.name_count, | |
fcf23d5b | 5497 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5498 | return NULL; |
5499 | } | |
5500 | ||
5501 | const ULONGEST namei_entry_offs | |
5502 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5503 | + namei * map.offset_size), | |
5504 | map.offset_size, map.dwarf5_byte_order); | |
5505 | return map.entry_pool + namei_entry_offs; | |
5506 | } | |
5507 | ||
5508 | /* See dw2_debug_names_iterator. */ | |
5509 | ||
5510 | dwarf2_per_cu_data * | |
5511 | dw2_debug_names_iterator::next () | |
5512 | { | |
5513 | if (m_addr == NULL) | |
5514 | return NULL; | |
5515 | ||
fcf23d5b SM |
5516 | dwarf2_per_bfd *per_bfd = m_per_objfile->per_bfd; |
5517 | struct objfile *objfile = m_per_objfile->objfile; | |
ed2dc618 | 5518 | bfd *const abfd = objfile->obfd; |
927aa2e7 JK |
5519 | |
5520 | again: | |
5521 | ||
5522 | unsigned int bytes_read; | |
5523 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5524 | m_addr += bytes_read; | |
5525 | if (abbrev == 0) | |
5526 | return NULL; | |
5527 | ||
5528 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5529 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5530 | { | |
b98664d3 | 5531 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5532 | "[in module %s]"), |
ed2dc618 | 5533 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5534 | return NULL; |
5535 | } | |
5536 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5537 | enum class symbol_linkage { |
5538 | unknown, | |
5539 | static_, | |
5540 | extern_, | |
23c13d42 | 5541 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5542 | dwarf2_per_cu_data *per_cu = NULL; |
5543 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5544 | { | |
5545 | ULONGEST ull; | |
5546 | switch (attr.form) | |
5547 | { | |
5548 | case DW_FORM_implicit_const: | |
5549 | ull = attr.implicit_const; | |
5550 | break; | |
5551 | case DW_FORM_flag_present: | |
5552 | ull = 1; | |
5553 | break; | |
5554 | case DW_FORM_udata: | |
5555 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5556 | m_addr += bytes_read; | |
5557 | break; | |
6dc55ce9 | 5558 | case DW_FORM_ref4: |
5559 | ull = read_4_bytes (abfd, m_addr); | |
5560 | m_addr += 4; | |
5561 | break; | |
5562 | case DW_FORM_ref8: | |
5563 | ull = read_8_bytes (abfd, m_addr); | |
5564 | m_addr += 8; | |
5565 | break; | |
5566 | case DW_FORM_ref_sig8: | |
5567 | ull = read_8_bytes (abfd, m_addr); | |
5568 | m_addr += 8; | |
5569 | break; | |
927aa2e7 | 5570 | default: |
b98664d3 | 5571 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5572 | dwarf_form_name (attr.form), |
ed2dc618 | 5573 | objfile_name (objfile)); |
927aa2e7 JK |
5574 | return NULL; |
5575 | } | |
5576 | switch (attr.dw_idx) | |
5577 | { | |
5578 | case DW_IDX_compile_unit: | |
5579 | /* Don't crash on bad data. */ | |
fcf23d5b | 5580 | if (ull >= m_per_objfile->per_bfd->all_comp_units.size ()) |
927aa2e7 | 5581 | { |
b98664d3 | 5582 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5583 | " [in module %s]"), |
5584 | pulongest (ull), | |
fcf23d5b | 5585 | objfile_name (objfile)); |
927aa2e7 JK |
5586 | continue; |
5587 | } | |
fcf23d5b | 5588 | per_cu = per_bfd->get_cutu (ull); |
927aa2e7 | 5589 | break; |
8af5c486 JK |
5590 | case DW_IDX_type_unit: |
5591 | /* Don't crash on bad data. */ | |
fcf23d5b | 5592 | if (ull >= per_bfd->all_type_units.size ()) |
8af5c486 | 5593 | { |
b98664d3 | 5594 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5595 | " [in module %s]"), |
5596 | pulongest (ull), | |
fcf23d5b | 5597 | objfile_name (objfile)); |
8af5c486 JK |
5598 | continue; |
5599 | } | |
fcf23d5b | 5600 | per_cu = &per_bfd->get_tu (ull)->per_cu; |
8af5c486 | 5601 | break; |
6dc55ce9 | 5602 | case DW_IDX_die_offset: |
5603 | /* In a per-CU index (as opposed to a per-module index), index | |
5604 | entries without CU attribute implicitly refer to the single CU. */ | |
5605 | if (per_cu == NULL) | |
fcf23d5b | 5606 | per_cu = per_bfd->get_cu (0); |
6dc55ce9 | 5607 | break; |
927aa2e7 JK |
5608 | case DW_IDX_GNU_internal: |
5609 | if (!m_map.augmentation_is_gdb) | |
5610 | break; | |
23c13d42 | 5611 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5612 | break; |
5613 | case DW_IDX_GNU_external: | |
5614 | if (!m_map.augmentation_is_gdb) | |
5615 | break; | |
23c13d42 | 5616 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5617 | break; |
5618 | } | |
5619 | } | |
5620 | ||
5621 | /* Skip if already read in. */ | |
fcf23d5b | 5622 | if (m_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5623 | goto again; |
5624 | ||
5625 | /* Check static vs global. */ | |
23c13d42 | 5626 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5627 | { |
2b79f376 | 5628 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5629 | const bool symbol_is_static = |
5630 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5631 | if (want_static != symbol_is_static) |
2b79f376 | 5632 | goto again; |
927aa2e7 JK |
5633 | } |
5634 | ||
5635 | /* Match dw2_symtab_iter_next, symbol_kind | |
5636 | and debug_names::psymbol_tag. */ | |
5637 | switch (m_domain) | |
5638 | { | |
5639 | case VAR_DOMAIN: | |
5640 | switch (indexval.dwarf_tag) | |
5641 | { | |
5642 | case DW_TAG_variable: | |
5643 | case DW_TAG_subprogram: | |
5644 | /* Some types are also in VAR_DOMAIN. */ | |
5645 | case DW_TAG_typedef: | |
5646 | case DW_TAG_structure_type: | |
5647 | break; | |
5648 | default: | |
5649 | goto again; | |
5650 | } | |
5651 | break; | |
5652 | case STRUCT_DOMAIN: | |
5653 | switch (indexval.dwarf_tag) | |
5654 | { | |
5655 | case DW_TAG_typedef: | |
5656 | case DW_TAG_structure_type: | |
5657 | break; | |
5658 | default: | |
5659 | goto again; | |
5660 | } | |
5661 | break; | |
5662 | case LABEL_DOMAIN: | |
5663 | switch (indexval.dwarf_tag) | |
5664 | { | |
5665 | case 0: | |
5666 | case DW_TAG_variable: | |
5667 | break; | |
5668 | default: | |
5669 | goto again; | |
5670 | } | |
5671 | break; | |
59c35742 AB |
5672 | case MODULE_DOMAIN: |
5673 | switch (indexval.dwarf_tag) | |
5674 | { | |
5675 | case DW_TAG_module: | |
5676 | break; | |
5677 | default: | |
5678 | goto again; | |
5679 | } | |
5680 | break; | |
927aa2e7 JK |
5681 | default: |
5682 | break; | |
5683 | } | |
5684 | ||
5685 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5686 | debug_names::psymbol_tag. */ | |
5687 | switch (m_search) | |
4b514bc8 | 5688 | { |
927aa2e7 JK |
5689 | case VARIABLES_DOMAIN: |
5690 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5691 | { |
927aa2e7 JK |
5692 | case DW_TAG_variable: |
5693 | break; | |
5694 | default: | |
5695 | goto again; | |
4b514bc8 | 5696 | } |
927aa2e7 JK |
5697 | break; |
5698 | case FUNCTIONS_DOMAIN: | |
5699 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5700 | { |
927aa2e7 JK |
5701 | case DW_TAG_subprogram: |
5702 | break; | |
5703 | default: | |
5704 | goto again; | |
4b514bc8 | 5705 | } |
927aa2e7 JK |
5706 | break; |
5707 | case TYPES_DOMAIN: | |
5708 | switch (indexval.dwarf_tag) | |
5709 | { | |
5710 | case DW_TAG_typedef: | |
5711 | case DW_TAG_structure_type: | |
5712 | break; | |
5713 | default: | |
5714 | goto again; | |
5715 | } | |
5716 | break; | |
59c35742 AB |
5717 | case MODULES_DOMAIN: |
5718 | switch (indexval.dwarf_tag) | |
5719 | { | |
5720 | case DW_TAG_module: | |
5721 | break; | |
5722 | default: | |
5723 | goto again; | |
5724 | } | |
927aa2e7 JK |
5725 | default: |
5726 | break; | |
4b514bc8 | 5727 | } |
927aa2e7 JK |
5728 | |
5729 | return per_cu; | |
4b514bc8 | 5730 | } |
61920122 | 5731 | |
927aa2e7 | 5732 | static struct compunit_symtab * |
c7f839cb | 5733 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5734 | const char *name, domain_enum domain) |
4b514bc8 | 5735 | { |
976ca316 | 5736 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
61920122 | 5737 | |
976ca316 | 5738 | const auto &mapp = per_objfile->per_bfd->debug_names_table; |
927aa2e7 | 5739 | if (!mapp) |
61920122 | 5740 | { |
927aa2e7 JK |
5741 | /* index is NULL if OBJF_READNOW. */ |
5742 | return NULL; | |
5743 | } | |
5744 | const auto &map = *mapp; | |
9291a0cd | 5745 | |
976ca316 | 5746 | dw2_debug_names_iterator iter (map, block_index, domain, name, per_objfile); |
9703b513 | 5747 | |
927aa2e7 JK |
5748 | struct compunit_symtab *stab_best = NULL; |
5749 | struct dwarf2_per_cu_data *per_cu; | |
5750 | while ((per_cu = iter.next ()) != NULL) | |
5751 | { | |
5752 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 5753 | compunit_symtab *stab |
976ca316 | 5754 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 | 5755 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5756 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5757 | |
927aa2e7 JK |
5758 | sym = block_find_symbol (block, name, domain, |
5759 | block_find_non_opaque_type_preferred, | |
5760 | &with_opaque); | |
9703b513 | 5761 | |
927aa2e7 JK |
5762 | /* Some caution must be observed with overloaded functions and |
5763 | methods, since the index will not contain any overload | |
5764 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5765 | |
927aa2e7 | 5766 | if (sym != NULL |
987012b8 | 5767 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5768 | return stab; |
5769 | if (with_opaque != NULL | |
987012b8 | 5770 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5771 | stab_best = stab; |
9703b513 | 5772 | |
927aa2e7 | 5773 | /* Keep looking through other CUs. */ |
9703b513 TT |
5774 | } |
5775 | ||
927aa2e7 | 5776 | return stab_best; |
9703b513 TT |
5777 | } |
5778 | ||
927aa2e7 JK |
5779 | /* This dumps minimal information about .debug_names. It is called |
5780 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5781 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5782 | |
927aa2e7 JK |
5783 | static void |
5784 | dw2_debug_names_dump (struct objfile *objfile) | |
5785 | { | |
976ca316 | 5786 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 5787 | |
976ca316 | 5788 | gdb_assert (per_objfile->per_bfd->using_index); |
927aa2e7 | 5789 | printf_filtered (".debug_names:"); |
976ca316 | 5790 | if (per_objfile->per_bfd->debug_names_table) |
927aa2e7 JK |
5791 | printf_filtered (" exists\n"); |
5792 | else | |
5793 | printf_filtered (" faked for \"readnow\"\n"); | |
5794 | printf_filtered ("\n"); | |
9291a0cd TT |
5795 | } |
5796 | ||
9291a0cd | 5797 | static void |
927aa2e7 JK |
5798 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5799 | const char *func_name) | |
9291a0cd | 5800 | { |
976ca316 | 5801 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 5802 | |
976ca316 SM |
5803 | /* per_objfile->per_bfd->debug_names_table is NULL if OBJF_READNOW. */ |
5804 | if (per_objfile->per_bfd->debug_names_table) | |
24c79950 | 5805 | { |
976ca316 | 5806 | const mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
24c79950 | 5807 | |
fcf23d5b | 5808 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name, |
976ca316 | 5809 | per_objfile); |
24c79950 | 5810 | |
927aa2e7 JK |
5811 | struct dwarf2_per_cu_data *per_cu; |
5812 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5813 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 JK |
5814 | } |
5815 | } | |
24c79950 | 5816 | |
3b00ef10 TT |
5817 | static void |
5818 | dw2_debug_names_map_matching_symbols | |
5819 | (struct objfile *objfile, | |
5820 | const lookup_name_info &name, domain_enum domain, | |
5821 | int global, | |
5822 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5823 | symbol_compare_ftype *ordered_compare) | |
5824 | { | |
976ca316 | 5825 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3b00ef10 TT |
5826 | |
5827 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
976ca316 | 5828 | if (!per_objfile->per_bfd->debug_names_table) |
3b00ef10 TT |
5829 | return; |
5830 | ||
976ca316 | 5831 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
3b00ef10 TT |
5832 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
5833 | ||
5834 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5835 | auto matcher = [&] (const char *symname) | |
5836 | { | |
5837 | if (ordered_compare == nullptr) | |
5838 | return true; | |
5839 | return ordered_compare (symname, match_name) == 0; | |
5840 | }; | |
5841 | ||
5842 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5843 | [&] (offset_type namei) | |
5844 | { | |
5845 | /* The name was matched, now expand corresponding CUs that were | |
5846 | marked. */ | |
fcf23d5b | 5847 | dw2_debug_names_iterator iter (map, block_kind, domain, namei, |
976ca316 | 5848 | per_objfile); |
3b00ef10 TT |
5849 | |
5850 | struct dwarf2_per_cu_data *per_cu; | |
5851 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5852 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 5853 | nullptr); |
3b00ef10 | 5854 | return true; |
976ca316 | 5855 | }, per_objfile); |
3b00ef10 TT |
5856 | |
5857 | /* It's a shame we couldn't do this inside the | |
5858 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5859 | that have already been expanded. Instead, this loop matches what | |
5860 | the psymtab code does. */ | |
976ca316 | 5861 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3b00ef10 | 5862 | { |
976ca316 | 5863 | compunit_symtab *symtab = per_objfile->get_symtab (per_cu); |
af758d11 | 5864 | if (symtab != nullptr) |
3b00ef10 TT |
5865 | { |
5866 | const struct block *block | |
af758d11 | 5867 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (symtab), block_kind); |
3b00ef10 TT |
5868 | if (!iterate_over_symbols_terminated (block, name, |
5869 | domain, callback)) | |
5870 | break; | |
5871 | } | |
5872 | } | |
5873 | } | |
5874 | ||
927aa2e7 JK |
5875 | static void |
5876 | dw2_debug_names_expand_symtabs_matching | |
5877 | (struct objfile *objfile, | |
5878 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 5879 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
5880 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
5881 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5882 | enum search_domain kind) | |
5883 | { | |
976ca316 | 5884 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 5885 | |
927aa2e7 | 5886 | /* debug_names_table is NULL if OBJF_READNOW. */ |
976ca316 | 5887 | if (!per_objfile->per_bfd->debug_names_table) |
927aa2e7 | 5888 | return; |
9291a0cd | 5889 | |
976ca316 | 5890 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
24c79950 | 5891 | |
c1a66c06 TV |
5892 | if (symbol_matcher == NULL && lookup_name == NULL) |
5893 | { | |
976ca316 | 5894 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
5895 | { |
5896 | QUIT; | |
5897 | ||
976ca316 SM |
5898 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
5899 | expansion_notify); | |
c1a66c06 TV |
5900 | } |
5901 | return; | |
5902 | } | |
5903 | ||
976ca316 | 5904 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
bbf2f4df | 5905 | |
c1a66c06 | 5906 | dw2_expand_symtabs_matching_symbol (map, *lookup_name, |
44ed8f3e PA |
5907 | symbol_matcher, |
5908 | kind, [&] (offset_type namei) | |
927aa2e7 | 5909 | { |
927aa2e7 JK |
5910 | /* The name was matched, now expand corresponding CUs that were |
5911 | marked. */ | |
976ca316 | 5912 | dw2_debug_names_iterator iter (map, kind, namei, per_objfile); |
bbf2f4df | 5913 | |
927aa2e7 JK |
5914 | struct dwarf2_per_cu_data *per_cu; |
5915 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 SM |
5916 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
5917 | expansion_notify); | |
3b00ef10 | 5918 | return true; |
976ca316 | 5919 | }, per_objfile); |
9291a0cd TT |
5920 | } |
5921 | ||
927aa2e7 | 5922 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
5923 | { |
5924 | dw2_has_symbols, | |
5925 | dw2_find_last_source_symtab, | |
5926 | dw2_forget_cached_source_info, | |
f8eba3c6 | 5927 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 5928 | dw2_debug_names_lookup_symbol, |
d3214198 | 5929 | NULL, |
9291a0cd | 5930 | dw2_print_stats, |
927aa2e7 | 5931 | dw2_debug_names_dump, |
927aa2e7 | 5932 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 5933 | dw2_expand_all_symtabs, |
652a8996 | 5934 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 5935 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 5936 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 5937 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 5938 | NULL, |
9291a0cd TT |
5939 | dw2_map_symbol_filenames |
5940 | }; | |
5941 | ||
4485a1c1 | 5942 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5989a64e | 5943 | to either a dwarf2_per_bfd or dwz_file object. */ |
4485a1c1 SM |
5944 | |
5945 | template <typename T> | |
5946 | static gdb::array_view<const gdb_byte> | |
5947 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5948 | { | |
5949 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5950 | ||
96b79293 | 5951 | if (section->empty ()) |
4485a1c1 SM |
5952 | return {}; |
5953 | ||
5954 | /* Older elfutils strip versions could keep the section in the main | |
5955 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5956 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5957 | return {}; |
5958 | ||
96b79293 | 5959 | section->read (obj); |
4485a1c1 | 5960 | |
8bebfcda PA |
5961 | /* dwarf2_section_info::size is a bfd_size_type, while |
5962 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5963 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5964 | is 32-bit. So we need an explicit narrowing conversion here. | |
5965 | This is fine, because it's impossible to allocate or mmap an | |
5966 | array/buffer larger than what size_t can represent. */ | |
5967 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5968 | } |
5969 | ||
87d6a7aa SM |
5970 | /* Lookup the index cache for the contents of the index associated to |
5971 | DWARF2_OBJ. */ | |
5972 | ||
5973 | static gdb::array_view<const gdb_byte> | |
5989a64e | 5974 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd) |
87d6a7aa SM |
5975 | { |
5976 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5977 | if (build_id == nullptr) | |
5978 | return {}; | |
5979 | ||
5980 | return global_index_cache.lookup_gdb_index (build_id, | |
5989a64e | 5981 | &dwarf2_per_bfd->index_cache_res); |
87d6a7aa SM |
5982 | } |
5983 | ||
5984 | /* Same as the above, but for DWZ. */ | |
5985 | ||
5986 | static gdb::array_view<const gdb_byte> | |
5987 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5988 | { | |
5989 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5990 | if (build_id == nullptr) | |
5991 | return {}; | |
5992 | ||
5993 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5994 | } | |
5995 | ||
3c0aa29a | 5996 | /* See symfile.h. */ |
9291a0cd | 5997 | |
3c0aa29a PA |
5998 | bool |
5999 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6000 | { |
976ca316 SM |
6001 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6002 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
ed2dc618 | 6003 | |
9291a0cd TT |
6004 | /* If we're about to read full symbols, don't bother with the |
6005 | indices. In this case we also don't care if some other debug | |
6006 | format is making psymtabs, because they are all about to be | |
6007 | expanded anyway. */ | |
6008 | if ((objfile->flags & OBJF_READNOW)) | |
6009 | { | |
17ee85fc TT |
6010 | /* When using READNOW, the using_index flag (set below) indicates that |
6011 | PER_BFD was already initialized, when we loaded some other objfile. */ | |
6012 | if (per_bfd->using_index) | |
6013 | { | |
6014 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6015 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6016 | return true; |
6017 | } | |
6018 | ||
6019 | per_bfd->using_index = 1; | |
976ca316 SM |
6020 | create_all_comp_units (per_objfile); |
6021 | create_all_type_units (per_objfile); | |
17ee85fc TT |
6022 | per_bfd->quick_file_names_table |
6023 | = create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
976ca316 | 6024 | per_objfile->resize_symtabs (); |
9291a0cd | 6025 | |
17ee85fc TT |
6026 | for (int i = 0; i < (per_bfd->all_comp_units.size () |
6027 | + per_bfd->all_type_units.size ()); ++i) | |
9291a0cd | 6028 | { |
17ee85fc | 6029 | dwarf2_per_cu_data *per_cu = per_bfd->get_cutu (i); |
9291a0cd | 6030 | |
17ee85fc | 6031 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
e254ef6a | 6032 | struct dwarf2_per_cu_quick_data); |
9291a0cd TT |
6033 | } |
6034 | ||
6035 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6036 | these functions will be no-ops because we will have expanded | |
6037 | all symtabs. */ | |
3c0aa29a PA |
6038 | *index_kind = dw_index_kind::GDB_INDEX; |
6039 | return true; | |
9291a0cd TT |
6040 | } |
6041 | ||
17ee85fc TT |
6042 | /* Was a debug names index already read when we processed an objfile sharing |
6043 | PER_BFD? */ | |
6044 | if (per_bfd->debug_names_table != nullptr) | |
6045 | { | |
6046 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
f8c41851 | 6047 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 6048 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6049 | return true; |
6050 | } | |
6051 | ||
6052 | /* Was a GDB index already read when we processed an objfile sharing | |
6053 | PER_BFD? */ | |
6054 | if (per_bfd->index_table != nullptr) | |
6055 | { | |
6056 | *index_kind = dw_index_kind::GDB_INDEX; | |
f8c41851 | 6057 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 6058 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6059 | return true; |
6060 | } | |
6061 | ||
efb763a5 SM |
6062 | /* There might already be partial symtabs built for this BFD. This happens |
6063 | when loading the same binary twice with the index-cache enabled. If so, | |
6064 | don't try to read an index. The objfile / per_objfile initialization will | |
6065 | be completed in dwarf2_build_psymtabs, in the standard partial symtabs | |
6066 | code path. */ | |
6067 | if (per_bfd->partial_symtabs != nullptr) | |
6068 | return false; | |
6069 | ||
976ca316 | 6070 | if (dwarf2_read_debug_names (per_objfile)) |
3c0aa29a PA |
6071 | { |
6072 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
976ca316 | 6073 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6074 | return true; |
6075 | } | |
927aa2e7 | 6076 | |
976ca316 | 6077 | if (dwarf2_read_gdb_index (per_objfile, |
5989a64e | 6078 | get_gdb_index_contents_from_section<struct dwarf2_per_bfd>, |
4485a1c1 | 6079 | get_gdb_index_contents_from_section<dwz_file>)) |
3c0aa29a PA |
6080 | { |
6081 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6082 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6083 | return true; |
6084 | } | |
9291a0cd | 6085 | |
87d6a7aa | 6086 | /* ... otherwise, try to find the index in the index cache. */ |
976ca316 | 6087 | if (dwarf2_read_gdb_index (per_objfile, |
87d6a7aa SM |
6088 | get_gdb_index_contents_from_cache, |
6089 | get_gdb_index_contents_from_cache_dwz)) | |
6090 | { | |
6091 | global_index_cache.hit (); | |
6092 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6093 | per_objfile->resize_symtabs (); |
87d6a7aa SM |
6094 | return true; |
6095 | } | |
6096 | ||
6097 | global_index_cache.miss (); | |
3c0aa29a | 6098 | return false; |
9291a0cd TT |
6099 | } |
6100 | ||
6101 | \f | |
6102 | ||
dce234bc PP |
6103 | /* Build a partial symbol table. */ |
6104 | ||
6105 | void | |
f29dff0a | 6106 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6107 | { |
976ca316 SM |
6108 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6109 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
17ee85fc TT |
6110 | |
6111 | if (per_bfd->partial_symtabs != nullptr) | |
6112 | { | |
6113 | /* Partial symbols were already read, so now we can simply | |
6114 | attach them. */ | |
6115 | objfile->partial_symtabs = per_bfd->partial_symtabs; | |
976ca316 | 6116 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6117 | return; |
6118 | } | |
c9bf0622 | 6119 | |
6eee24ce | 6120 | init_psymbol_list (objfile, 1024); |
c906108c | 6121 | |
a70b8144 | 6122 | try |
c9bf0622 TT |
6123 | { |
6124 | /* This isn't really ideal: all the data we allocate on the | |
6125 | objfile's obstack is still uselessly kept around. However, | |
6126 | freeing it seems unsafe. */ | |
906768f9 | 6127 | psymtab_discarder psymtabs (objfile); |
976ca316 | 6128 | dwarf2_build_psymtabs_hard (per_objfile); |
906768f9 | 6129 | psymtabs.keep (); |
87d6a7aa | 6130 | |
976ca316 | 6131 | per_objfile->resize_symtabs (); |
af758d11 | 6132 | |
87d6a7aa | 6133 | /* (maybe) store an index in the cache. */ |
976ca316 | 6134 | global_index_cache.store (per_objfile); |
c9bf0622 | 6135 | } |
230d2906 | 6136 | catch (const gdb_exception_error &except) |
492d29ea PA |
6137 | { |
6138 | exception_print (gdb_stderr, except); | |
6139 | } | |
17ee85fc TT |
6140 | |
6141 | /* Finish by setting the local reference to partial symtabs, so that | |
6142 | we don't try to read them again if reading another objfile with the same | |
6143 | BFD. If we can't in fact share, this won't make a difference anyway as | |
6144 | the dwarf2_per_bfd object won't be shared. */ | |
6145 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
c906108c | 6146 | } |
c906108c | 6147 | |
3b80fe9b DE |
6148 | /* Find the base address of the compilation unit for range lists and |
6149 | location lists. It will normally be specified by DW_AT_low_pc. | |
6150 | In DWARF-3 draft 4, the base address could be overridden by | |
6151 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6152 | compilation units with discontinuous ranges. */ | |
6153 | ||
6154 | static void | |
6155 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6156 | { | |
6157 | struct attribute *attr; | |
6158 | ||
2b24b6e4 | 6159 | cu->base_address.reset (); |
3b80fe9b DE |
6160 | |
6161 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6162 | if (attr != nullptr) |
95f982e5 | 6163 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
6164 | else |
6165 | { | |
6166 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6167 | if (attr != nullptr) |
95f982e5 | 6168 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
6169 | } |
6170 | } | |
6171 | ||
36586728 TT |
6172 | /* Helper function that returns the proper abbrev section for |
6173 | THIS_CU. */ | |
6174 | ||
6175 | static struct dwarf2_section_info * | |
6176 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6177 | { | |
6178 | struct dwarf2_section_info *abbrev; | |
c3699833 | 6179 | dwarf2_per_bfd *per_bfd = this_cu->per_bfd; |
36586728 TT |
6180 | |
6181 | if (this_cu->is_dwz) | |
c3699833 | 6182 | abbrev = &dwarf2_get_dwz_file (per_bfd)->abbrev; |
36586728 | 6183 | else |
c3699833 | 6184 | abbrev = &per_bfd->abbrev; |
36586728 TT |
6185 | |
6186 | return abbrev; | |
6187 | } | |
6188 | ||
f4dc4d17 DE |
6189 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6190 | ||
6191 | static sect_offset | |
976ca316 | 6192 | read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6193 | struct dwarf2_section_info *section, |
9c541725 | 6194 | sect_offset sect_off) |
f4dc4d17 | 6195 | { |
96b79293 | 6196 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 6197 | const gdb_byte *info_ptr; |
ac298888 | 6198 | unsigned int initial_length_size, offset_size; |
43988095 | 6199 | uint16_t version; |
f4dc4d17 | 6200 | |
976ca316 | 6201 | section->read (per_objfile->objfile); |
9c541725 | 6202 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6203 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6204 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6205 | info_ptr += initial_length_size; |
6206 | ||
6207 | version = read_2_bytes (abfd, info_ptr); | |
6208 | info_ptr += 2; | |
6209 | if (version >= 5) | |
6210 | { | |
6211 | /* Skip unit type and address size. */ | |
6212 | info_ptr += 2; | |
6213 | } | |
6214 | ||
24aa364d | 6215 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6216 | } |
6217 | ||
b83470bf TT |
6218 | /* A partial symtab that is used only for include files. */ |
6219 | struct dwarf2_include_psymtab : public partial_symtab | |
6220 | { | |
6221 | dwarf2_include_psymtab (const char *filename, struct objfile *objfile) | |
6222 | : partial_symtab (filename, objfile) | |
6223 | { | |
6224 | } | |
6225 | ||
6226 | void read_symtab (struct objfile *objfile) override | |
6227 | { | |
194d088f TV |
6228 | /* It's an include file, no symbols to read for it. |
6229 | Everything is in the includer symtab. */ | |
6230 | ||
6231 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
6232 | expansion of the includer psymtab. We use the dependencies[0] field to | |
6233 | model the includer. But if we go the regular route of calling | |
6234 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
6235 | to expand the includer, we'll only use expand_psymtab on the includer | |
6236 | (making it a non-toplevel psymtab), while if we expand the includer via | |
6237 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
6238 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
6239 | psymtab, and trigger read_symtab on the includer here directly. */ | |
6240 | includer ()->read_symtab (objfile); | |
b83470bf TT |
6241 | } |
6242 | ||
6243 | void expand_psymtab (struct objfile *objfile) override | |
6244 | { | |
194d088f TV |
6245 | /* This is not called by read_symtab, and should not be called by any |
6246 | expand_dependencies. */ | |
6247 | gdb_assert (false); | |
b83470bf TT |
6248 | } |
6249 | ||
5717c425 | 6250 | bool readin_p (struct objfile *objfile) const override |
b83470bf | 6251 | { |
5717c425 | 6252 | return includer ()->readin_p (objfile); |
b83470bf TT |
6253 | } |
6254 | ||
5717c425 | 6255 | compunit_symtab *get_compunit_symtab (struct objfile *objfile) const override |
b83470bf TT |
6256 | { |
6257 | return nullptr; | |
6258 | } | |
6259 | ||
6260 | private: | |
194d088f TV |
6261 | partial_symtab *includer () const |
6262 | { | |
6263 | /* An include psymtab has exactly one dependency: the psymtab that | |
6264 | includes it. */ | |
6265 | gdb_assert (this->number_of_dependencies == 1); | |
6266 | return this->dependencies[0]; | |
6267 | } | |
b83470bf TT |
6268 | }; |
6269 | ||
aaa75496 JB |
6270 | /* Allocate a new partial symtab for file named NAME and mark this new |
6271 | partial symtab as being an include of PST. */ | |
6272 | ||
6273 | static void | |
891813be | 6274 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
aaa75496 JB |
6275 | struct objfile *objfile) |
6276 | { | |
b83470bf | 6277 | dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile); |
aaa75496 | 6278 | |
fbd9ab74 | 6279 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
45940949 | 6280 | subpst->dirname = pst->dirname; |
fbd9ab74 | 6281 | |
a9342b62 | 6282 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6283 | subpst->dependencies[0] = pst; |
6284 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
6285 | } |
6286 | ||
6287 | /* Read the Line Number Program data and extract the list of files | |
6288 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6289 | partial symtab for each of these included files. */ |
aaa75496 JB |
6290 | |
6291 | static void | |
6292 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6293 | struct die_info *die, |
891813be | 6294 | dwarf2_psymtab *pst) |
aaa75496 | 6295 | { |
fff8551c | 6296 | line_header_up lh; |
d85a05f0 | 6297 | struct attribute *attr; |
aaa75496 | 6298 | |
d85a05f0 | 6299 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
435d3d88 | 6300 | if (attr != nullptr) |
9c541725 | 6301 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6302 | if (lh == NULL) |
6303 | return; /* No linetable, so no includes. */ | |
6304 | ||
79748972 TT |
6305 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6306 | that we pass in the raw text_low here; that is ok because we're | |
6307 | only decoding the line table to make include partial symtabs, and | |
6308 | so the addresses aren't really used. */ | |
4ae976d1 | 6309 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6310 | pst->raw_text_low (), 1); |
aaa75496 JB |
6311 | } |
6312 | ||
348e048f | 6313 | static hashval_t |
52dc124a | 6314 | hash_signatured_type (const void *item) |
348e048f | 6315 | { |
9a3c8263 SM |
6316 | const struct signatured_type *sig_type |
6317 | = (const struct signatured_type *) item; | |
9a619af0 | 6318 | |
348e048f | 6319 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6320 | return sig_type->signature; |
348e048f DE |
6321 | } |
6322 | ||
6323 | static int | |
52dc124a | 6324 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6325 | { |
9a3c8263 SM |
6326 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6327 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6328 | |
348e048f DE |
6329 | return lhs->signature == rhs->signature; |
6330 | } | |
6331 | ||
1fd400ff TT |
6332 | /* Allocate a hash table for signatured types. */ |
6333 | ||
b0b6a987 | 6334 | static htab_up |
298e9637 | 6335 | allocate_signatured_type_table () |
1fd400ff | 6336 | { |
b0b6a987 TT |
6337 | return htab_up (htab_create_alloc (41, |
6338 | hash_signatured_type, | |
6339 | eq_signatured_type, | |
6340 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6341 | } |
6342 | ||
d467dd73 | 6343 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6344 | |
6345 | static int | |
d467dd73 | 6346 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6347 | { |
9a3c8263 | 6348 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6349 | std::vector<signatured_type *> *all_type_units |
6350 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6351 | |
b2bdb8cf | 6352 | all_type_units->push_back (sigt); |
1fd400ff TT |
6353 | |
6354 | return 1; | |
6355 | } | |
6356 | ||
78d4d2c5 | 6357 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6358 | and fill them into TYPES_HTAB. It will process only type units, |
6359 | therefore DW_UT_type. */ | |
c88ee1f0 | 6360 | |
78d4d2c5 | 6361 | static void |
976ca316 | 6362 | create_debug_type_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6363 | struct dwo_file *dwo_file, |
b0b6a987 | 6364 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6365 | rcuh_kind section_kind) |
348e048f | 6366 | { |
976ca316 | 6367 | struct objfile *objfile = per_objfile->objfile; |
4bdcc0c1 | 6368 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6369 | bfd *abfd; |
6370 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6371 | |
4bdcc0c1 DE |
6372 | abbrev_section = (dwo_file != NULL |
6373 | ? &dwo_file->sections.abbrev | |
976ca316 | 6374 | : &per_objfile->per_bfd->abbrev); |
4bdcc0c1 | 6375 | |
b4f54984 | 6376 | if (dwarf_read_debug) |
43988095 | 6377 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
96b79293 TT |
6378 | section->get_name (), |
6379 | abbrev_section->get_file_name ()); | |
09406207 | 6380 | |
96b79293 | 6381 | section->read (objfile); |
78d4d2c5 | 6382 | info_ptr = section->buffer; |
348e048f | 6383 | |
78d4d2c5 JK |
6384 | if (info_ptr == NULL) |
6385 | return; | |
348e048f | 6386 | |
78d4d2c5 JK |
6387 | /* We can't set abfd until now because the section may be empty or |
6388 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6389 | abfd = section->get_bfd_owner (); |
348e048f | 6390 | |
c0ab21c2 TT |
6391 | /* We don't use cutu_reader here because we don't need to read |
6392 | any dies: the signature is in the header. */ | |
3019eac3 | 6393 | |
78d4d2c5 JK |
6394 | end_ptr = info_ptr + section->size; |
6395 | while (info_ptr < end_ptr) | |
6396 | { | |
78d4d2c5 JK |
6397 | struct signatured_type *sig_type; |
6398 | struct dwo_unit *dwo_tu; | |
6399 | void **slot; | |
6400 | const gdb_byte *ptr = info_ptr; | |
6401 | struct comp_unit_head header; | |
6402 | unsigned int length; | |
8b70b953 | 6403 | |
9c541725 | 6404 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6405 | |
a49dd8dd JK |
6406 | /* Initialize it due to a false compiler warning. */ |
6407 | header.signature = -1; | |
9c541725 | 6408 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6409 | |
78d4d2c5 JK |
6410 | /* We need to read the type's signature in order to build the hash |
6411 | table, but we don't need anything else just yet. */ | |
348e048f | 6412 | |
976ca316 | 6413 | ptr = read_and_check_comp_unit_head (per_objfile, &header, section, |
43988095 | 6414 | abbrev_section, ptr, section_kind); |
348e048f | 6415 | |
4057dfde | 6416 | length = header.get_length (); |
6caca83c | 6417 | |
78d4d2c5 JK |
6418 | /* Skip dummy type units. */ |
6419 | if (ptr >= info_ptr + length | |
43988095 | 6420 | || peek_abbrev_code (abfd, ptr) == 0 |
d2854d8d CT |
6421 | || (header.unit_type != DW_UT_type |
6422 | && header.unit_type != DW_UT_split_type)) | |
78d4d2c5 JK |
6423 | { |
6424 | info_ptr += length; | |
6425 | continue; | |
6426 | } | |
dee91e82 | 6427 | |
78d4d2c5 JK |
6428 | if (types_htab == NULL) |
6429 | { | |
6430 | if (dwo_file) | |
298e9637 | 6431 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6432 | else |
298e9637 | 6433 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6434 | } |
8b70b953 | 6435 | |
78d4d2c5 JK |
6436 | if (dwo_file) |
6437 | { | |
6438 | sig_type = NULL; | |
976ca316 | 6439 | dwo_tu = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, dwo_unit); |
78d4d2c5 | 6440 | dwo_tu->dwo_file = dwo_file; |
43988095 | 6441 | dwo_tu->signature = header.signature; |
9c541725 | 6442 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6443 | dwo_tu->section = section; |
9c541725 | 6444 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6445 | dwo_tu->length = length; |
6446 | } | |
6447 | else | |
6448 | { | |
6449 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6450 | The real type_offset is in the DWO file. */ | |
6451 | dwo_tu = NULL; | |
976ca316 | 6452 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
43988095 | 6453 | sig_type->signature = header.signature; |
9c541725 | 6454 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 JK |
6455 | sig_type->per_cu.is_debug_types = 1; |
6456 | sig_type->per_cu.section = section; | |
9c541725 | 6457 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6458 | sig_type->per_cu.length = length; |
6459 | } | |
6460 | ||
b0b6a987 | 6461 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6462 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6463 | INSERT); | |
6464 | gdb_assert (slot != NULL); | |
6465 | if (*slot != NULL) | |
6466 | { | |
9c541725 | 6467 | sect_offset dup_sect_off; |
0349ea22 | 6468 | |
3019eac3 DE |
6469 | if (dwo_file) |
6470 | { | |
78d4d2c5 JK |
6471 | const struct dwo_unit *dup_tu |
6472 | = (const struct dwo_unit *) *slot; | |
6473 | ||
9c541725 | 6474 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6475 | } |
6476 | else | |
6477 | { | |
78d4d2c5 JK |
6478 | const struct signatured_type *dup_tu |
6479 | = (const struct signatured_type *) *slot; | |
6480 | ||
9c541725 | 6481 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6482 | } |
8b70b953 | 6483 | |
b98664d3 | 6484 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6485 | " the entry at offset %s, signature %s"), |
6486 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6487 | hex_string (header.signature)); |
78d4d2c5 JK |
6488 | } |
6489 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6490 | |
78d4d2c5 | 6491 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6492 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6493 | sect_offset_str (sect_off), | |
43988095 | 6494 | hex_string (header.signature)); |
3019eac3 | 6495 | |
78d4d2c5 JK |
6496 | info_ptr += length; |
6497 | } | |
6498 | } | |
3019eac3 | 6499 | |
78d4d2c5 JK |
6500 | /* Create the hash table of all entries in the .debug_types |
6501 | (or .debug_types.dwo) section(s). | |
6502 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6503 | otherwise it is NULL. | |
b3c8eb43 | 6504 | |
78d4d2c5 | 6505 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6506 | |
78d4d2c5 | 6507 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6508 | |
78d4d2c5 | 6509 | static void |
976ca316 | 6510 | create_debug_types_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6511 | struct dwo_file *dwo_file, |
fd5866f6 | 6512 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6513 | htab_up &types_htab) |
78d4d2c5 | 6514 | { |
fd5866f6 | 6515 | for (dwarf2_section_info §ion : type_sections) |
976ca316 SM |
6516 | create_debug_type_hash_table (per_objfile, dwo_file, §ion, types_htab, |
6517 | rcuh_kind::TYPE); | |
3019eac3 DE |
6518 | } |
6519 | ||
6520 | /* Create the hash table of all entries in the .debug_types section, | |
6521 | and initialize all_type_units. | |
6522 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6523 | otherwise non-zero. */ | |
6524 | ||
6525 | static int | |
976ca316 | 6526 | create_all_type_units (dwarf2_per_objfile *per_objfile) |
3019eac3 | 6527 | { |
b0b6a987 | 6528 | htab_up types_htab; |
3019eac3 | 6529 | |
976ca316 SM |
6530 | create_debug_type_hash_table (per_objfile, NULL, &per_objfile->per_bfd->info, |
6531 | types_htab, rcuh_kind::COMPILE); | |
6532 | create_debug_types_hash_table (per_objfile, NULL, per_objfile->per_bfd->types, | |
6533 | types_htab); | |
3019eac3 DE |
6534 | if (types_htab == NULL) |
6535 | { | |
976ca316 | 6536 | per_objfile->per_bfd->signatured_types = NULL; |
3019eac3 DE |
6537 | return 0; |
6538 | } | |
6539 | ||
976ca316 | 6540 | per_objfile->per_bfd->signatured_types = std::move (types_htab); |
348e048f | 6541 | |
976ca316 SM |
6542 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
6543 | per_objfile->per_bfd->all_type_units.reserve | |
6544 | (htab_elements (per_objfile->per_bfd->signatured_types.get ())); | |
b2bdb8cf | 6545 | |
976ca316 | 6546 | htab_traverse_noresize (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6547 | add_signatured_type_cu_to_table, |
976ca316 | 6548 | &per_objfile->per_bfd->all_type_units); |
1fd400ff | 6549 | |
348e048f DE |
6550 | return 1; |
6551 | } | |
6552 | ||
5989a64e | 6553 | /* Add an entry for signature SIG to dwarf2_per_objfile->per_bfd->signatured_types. |
6aa5f3a6 DE |
6554 | If SLOT is non-NULL, it is the entry to use in the hash table. |
6555 | Otherwise we find one. */ | |
6556 | ||
6557 | static struct signatured_type * | |
976ca316 | 6558 | add_type_unit (dwarf2_per_objfile *per_objfile, ULONGEST sig, void **slot) |
6aa5f3a6 | 6559 | { |
976ca316 SM |
6560 | if (per_objfile->per_bfd->all_type_units.size () |
6561 | == per_objfile->per_bfd->all_type_units.capacity ()) | |
6562 | ++per_objfile->per_bfd->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6563 | |
976ca316 | 6564 | signatured_type *sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
b2bdb8cf | 6565 | |
976ca316 | 6566 | per_objfile->resize_symtabs (); |
af758d11 | 6567 | |
976ca316 | 6568 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
6aa5f3a6 DE |
6569 | sig_type->signature = sig; |
6570 | sig_type->per_cu.is_debug_types = 1; | |
976ca316 | 6571 | if (per_objfile->per_bfd->using_index) |
6aa5f3a6 DE |
6572 | { |
6573 | sig_type->per_cu.v.quick = | |
976ca316 | 6574 | OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
6aa5f3a6 DE |
6575 | struct dwarf2_per_cu_quick_data); |
6576 | } | |
6577 | ||
6578 | if (slot == NULL) | |
6579 | { | |
976ca316 | 6580 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 DE |
6581 | sig_type, INSERT); |
6582 | } | |
6583 | gdb_assert (*slot == NULL); | |
6584 | *slot = sig_type; | |
6585 | /* The rest of sig_type must be filled in by the caller. */ | |
6586 | return sig_type; | |
6587 | } | |
6588 | ||
a2ce51a0 DE |
6589 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6590 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6591 | ||
6592 | static void | |
976ca316 | 6593 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile *per_objfile, |
a2ce51a0 DE |
6594 | struct signatured_type *sig_entry, |
6595 | struct dwo_unit *dwo_entry) | |
6596 | { | |
976ca316 | 6597 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
1859c670 | 6598 | |
7ee85ab1 | 6599 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 | 6600 | gdb_assert (! sig_entry->per_cu.queued); |
976ca316 | 6601 | gdb_assert (per_objfile->get_cu (&sig_entry->per_cu) == NULL); |
1859c670 | 6602 | if (per_bfd->using_index) |
6aa5f3a6 DE |
6603 | { |
6604 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
976ca316 | 6605 | gdb_assert (!per_objfile->symtab_set_p (&sig_entry->per_cu)); |
6aa5f3a6 DE |
6606 | } |
6607 | else | |
6608 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6609 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6610 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6611 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6612 | gdb_assert (sig_entry->dwo_unit == NULL); |
6613 | ||
6614 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6615 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6616 | sig_entry->per_cu.length = dwo_entry->length; |
6617 | sig_entry->per_cu.reading_dwo_directly = 1; | |
1859c670 | 6618 | sig_entry->per_cu.per_bfd = per_bfd; |
a2ce51a0 DE |
6619 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6620 | sig_entry->dwo_unit = dwo_entry; | |
6621 | } | |
6622 | ||
6623 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6624 | If we haven't read the TU yet, create the signatured_type data structure |
6625 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6626 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6627 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6628 | containing that CU. Otherwise we could end up reading several other DWO | |
6629 | files (due to comdat folding) to process the transitive closure of all the | |
6630 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6631 | type signature that it needs. | |
a2ce51a0 DE |
6632 | We only do this for .gdb_index because in the psymtab case we already have |
6633 | to read all the DWOs to build the type unit groups. */ | |
6634 | ||
6635 | static struct signatured_type * | |
6636 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6637 | { | |
976ca316 | 6638 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a2ce51a0 DE |
6639 | struct dwo_file *dwo_file; |
6640 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6641 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6642 | void **slot; |
a2ce51a0 | 6643 | |
976ca316 | 6644 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 | 6645 | |
6aa5f3a6 DE |
6646 | /* If TU skeletons have been removed then we may not have read in any |
6647 | TUs yet. */ | |
976ca316 SM |
6648 | if (per_objfile->per_bfd->signatured_types == NULL) |
6649 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 DE |
6650 | |
6651 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6652 | Use the global signatured_types array to do our own comdat-folding |
6653 | of types. If this is the first time we're reading this TU, and | |
6654 | the TU has an entry in .gdb_index, replace the recorded data from | |
6655 | .gdb_index with this TU. */ | |
a2ce51a0 | 6656 | |
a2ce51a0 | 6657 | find_sig_entry.signature = sig; |
976ca316 | 6658 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6659 | &find_sig_entry, INSERT); |
9a3c8263 | 6660 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6661 | |
6662 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6663 | read. Don't reassign the global entry to point to this DWO if that's |
6664 | the case. Also note that if the TU is already being read, it may not | |
6665 | have come from a DWO, the program may be a mix of Fission-compiled | |
6666 | code and non-Fission-compiled code. */ | |
6667 | ||
6668 | /* Have we already tried to read this TU? | |
6669 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6670 | needn't exist in the global table yet). */ | |
6671 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6672 | return sig_entry; |
6673 | ||
6aa5f3a6 DE |
6674 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6675 | dwo_unit of the TU itself. */ | |
6676 | dwo_file = cu->dwo_unit->dwo_file; | |
6677 | ||
a2ce51a0 DE |
6678 | /* Ok, this is the first time we're reading this TU. */ |
6679 | if (dwo_file->tus == NULL) | |
6680 | return NULL; | |
6681 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6682 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6683 | &find_dwo_entry); | |
a2ce51a0 DE |
6684 | if (dwo_entry == NULL) |
6685 | return NULL; | |
6686 | ||
6aa5f3a6 DE |
6687 | /* If the global table doesn't have an entry for this TU, add one. */ |
6688 | if (sig_entry == NULL) | |
976ca316 | 6689 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6aa5f3a6 | 6690 | |
976ca316 | 6691 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6692 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6693 | return sig_entry; |
6694 | } | |
6695 | ||
a2ce51a0 DE |
6696 | /* Subroutine of lookup_signatured_type. |
6697 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6698 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6699 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6700 | |
6701 | static struct signatured_type * | |
6702 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6703 | { | |
976ca316 SM |
6704 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
6705 | struct dwp_file *dwp_file = get_dwp_file (per_objfile); | |
a2ce51a0 DE |
6706 | struct dwo_unit *dwo_entry; |
6707 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6708 | void **slot; |
a2ce51a0 | 6709 | |
976ca316 | 6710 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 DE |
6711 | gdb_assert (dwp_file != NULL); |
6712 | ||
6aa5f3a6 DE |
6713 | /* If TU skeletons have been removed then we may not have read in any |
6714 | TUs yet. */ | |
976ca316 SM |
6715 | if (per_objfile->per_bfd->signatured_types == NULL) |
6716 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 | 6717 | |
6aa5f3a6 | 6718 | find_sig_entry.signature = sig; |
976ca316 | 6719 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6720 | &find_sig_entry, INSERT); |
9a3c8263 | 6721 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6722 | |
6723 | /* Have we already tried to read this TU? | |
6724 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6725 | needn't exist in the global table yet). */ | |
6726 | if (sig_entry != NULL) | |
6727 | return sig_entry; | |
6728 | ||
a2ce51a0 DE |
6729 | if (dwp_file->tus == NULL) |
6730 | return NULL; | |
976ca316 SM |
6731 | dwo_entry = lookup_dwo_unit_in_dwp (per_objfile, dwp_file, NULL, sig, |
6732 | 1 /* is_debug_types */); | |
a2ce51a0 DE |
6733 | if (dwo_entry == NULL) |
6734 | return NULL; | |
6735 | ||
976ca316 SM |
6736 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6737 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6738 | |
a2ce51a0 DE |
6739 | return sig_entry; |
6740 | } | |
6741 | ||
380bca97 | 6742 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6743 | Returns NULL if signature SIG is not present in the table. |
6744 | It is up to the caller to complain about this. */ | |
348e048f DE |
6745 | |
6746 | static struct signatured_type * | |
a2ce51a0 | 6747 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6748 | { |
976ca316 | 6749 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 6750 | |
976ca316 | 6751 | if (cu->dwo_unit && per_objfile->per_bfd->using_index) |
a2ce51a0 DE |
6752 | { |
6753 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6754 | These cases require special processing. */ | |
976ca316 | 6755 | if (get_dwp_file (per_objfile) == NULL) |
a2ce51a0 DE |
6756 | return lookup_dwo_signatured_type (cu, sig); |
6757 | else | |
6758 | return lookup_dwp_signatured_type (cu, sig); | |
6759 | } | |
6760 | else | |
6761 | { | |
6762 | struct signatured_type find_entry, *entry; | |
348e048f | 6763 | |
976ca316 | 6764 | if (per_objfile->per_bfd->signatured_types == NULL) |
a2ce51a0 DE |
6765 | return NULL; |
6766 | find_entry.signature = sig; | |
9a3c8263 | 6767 | entry = ((struct signatured_type *) |
976ca316 | 6768 | htab_find (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6769 | &find_entry)); |
a2ce51a0 DE |
6770 | return entry; |
6771 | } | |
348e048f | 6772 | } |
18a8505e | 6773 | |
42e7ad6c | 6774 | /* Low level DIE reading support. */ |
348e048f | 6775 | |
d85a05f0 DJ |
6776 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6777 | ||
6778 | static void | |
6779 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6780 | struct dwarf2_cu *cu, |
3019eac3 | 6781 | struct dwarf2_section_info *section, |
685af9cd TT |
6782 | struct dwo_file *dwo_file, |
6783 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6784 | { |
fceca515 | 6785 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6786 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6787 | reader->cu = cu; |
3019eac3 | 6788 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6789 | reader->die_section = section; |
6790 | reader->buffer = section->buffer; | |
f664829e | 6791 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6792 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6793 | } |
6794 | ||
c0ab21c2 | 6795 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6796 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6797 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6798 | already. |
6799 | ||
6800 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6801 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6802 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6803 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6804 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6805 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6806 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6807 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6808 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6809 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6810 | kept around for at least as long as *RESULT_READER. | |
6811 | ||
b0c7bfa9 DE |
6812 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6813 | ||
6814 | static int | |
4ab09049 | 6815 | read_cutu_die_from_dwo (dwarf2_cu *cu, |
b0c7bfa9 | 6816 | struct dwo_unit *dwo_unit, |
b0c7bfa9 | 6817 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6818 | const char *stub_comp_dir, |
b0c7bfa9 | 6819 | struct die_reader_specs *result_reader, |
d521ce57 | 6820 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6821 | struct die_info **result_comp_unit_die, |
685af9cd | 6822 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6823 | { |
976ca316 | 6824 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
4ab09049 | 6825 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
976ca316 | 6826 | struct objfile *objfile = per_objfile->objfile; |
b0c7bfa9 | 6827 | bfd *abfd; |
d521ce57 | 6828 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6829 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6830 | int i,num_extra_attrs; | |
6831 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6832 | struct die_info *comp_unit_die; |
6833 | ||
b0aeadb3 DE |
6834 | /* At most one of these may be provided. */ |
6835 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6836 | |
b0c7bfa9 DE |
6837 | /* These attributes aren't processed until later: |
6838 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6839 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6840 | referenced later. However, these attributes are found in the stub | |
6841 | which we won't have later. In order to not impose this complication | |
6842 | on the rest of the code, we read them here and copy them to the | |
6843 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6844 | |
6845 | stmt_list = NULL; | |
6846 | low_pc = NULL; | |
6847 | high_pc = NULL; | |
6848 | ranges = NULL; | |
6849 | comp_dir = NULL; | |
6850 | ||
6851 | if (stub_comp_unit_die != NULL) | |
6852 | { | |
6853 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6854 | DWO file. */ | |
4ab09049 | 6855 | if (!per_cu->is_debug_types) |
b0c7bfa9 DE |
6856 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); |
6857 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6858 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6859 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6860 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6861 | ||
a39fdb41 | 6862 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6863 | |
18a8505e AT |
6864 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6865 | here (if needed). We need the value before we can process | |
6866 | DW_AT_ranges. */ | |
a39fdb41 | 6867 | cu->ranges_base = stub_comp_unit_die->ranges_base (); |
b0c7bfa9 | 6868 | } |
a2ce51a0 DE |
6869 | else if (stub_comp_dir != NULL) |
6870 | { | |
6871 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
fe56917a | 6872 | comp_dir = OBSTACK_ZALLOC (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6873 | comp_dir->name = DW_AT_comp_dir; |
6874 | comp_dir->form = DW_FORM_string; | |
c6481205 | 6875 | comp_dir->set_string_noncanonical (stub_comp_dir); |
a2ce51a0 | 6876 | } |
b0c7bfa9 DE |
6877 | |
6878 | /* Set up for reading the DWO CU/TU. */ | |
6879 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6880 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6881 | section->read (objfile); |
6882 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6883 | begin_info_ptr = info_ptr = (section->buffer |
6884 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6885 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 | 6886 | |
4ab09049 | 6887 | if (per_cu->is_debug_types) |
b0c7bfa9 | 6888 | { |
4ab09049 | 6889 | signatured_type *sig_type = (struct signatured_type *) per_cu; |
b0c7bfa9 | 6890 | |
976ca316 SM |
6891 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6892 | section, dwo_abbrev_section, | |
43988095 | 6893 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6894 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6895 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6896 | { |
6897 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6898 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6899 | hex_string (sig_type->signature), |
43988095 | 6900 | hex_string (cu->header.signature), |
9d8780f0 | 6901 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6902 | bfd_get_filename (abfd)); |
6903 | } | |
9c541725 | 6904 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6905 | /* For DWOs coming from DWP files, we don't know the CU length |
6906 | nor the type's offset in the TU until now. */ | |
4057dfde | 6907 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6908 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6909 | |
6910 | /* Establish the type offset that can be used to lookup the type. | |
6911 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6912 | sig_type->type_offset_in_section |
6913 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6914 | } |
6915 | else | |
6916 | { | |
976ca316 SM |
6917 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6918 | section, dwo_abbrev_section, | |
43988095 | 6919 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6920 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6921 | /* For DWOs coming from DWP files, we don't know the CU length |
6922 | until now. */ | |
4057dfde | 6923 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6924 | } |
6925 | ||
685af9cd | 6926 | *result_dwo_abbrev_table |
86de1d91 TT |
6927 | = abbrev_table::read (objfile, dwo_abbrev_section, |
6928 | cu->header.abbrev_sect_off); | |
685af9cd TT |
6929 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6930 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6931 | |
6932 | /* Read in the die, but leave space to copy over the attributes | |
6933 | from the stub. This has the benefit of simplifying the rest of | |
6934 | the code - all the work to maintain the illusion of a single | |
6935 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6936 | num_extra_attrs = ((stmt_list != NULL) | |
6937 | + (low_pc != NULL) | |
6938 | + (high_pc != NULL) | |
6939 | + (ranges != NULL) | |
6940 | + (comp_dir != NULL)); | |
6941 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6942 | num_extra_attrs); |
b0c7bfa9 DE |
6943 | |
6944 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6945 | comp_unit_die = *result_comp_unit_die; | |
6946 | i = comp_unit_die->num_attrs; | |
6947 | if (stmt_list != NULL) | |
6948 | comp_unit_die->attrs[i++] = *stmt_list; | |
6949 | if (low_pc != NULL) | |
6950 | comp_unit_die->attrs[i++] = *low_pc; | |
6951 | if (high_pc != NULL) | |
6952 | comp_unit_die->attrs[i++] = *high_pc; | |
6953 | if (ranges != NULL) | |
6954 | comp_unit_die->attrs[i++] = *ranges; | |
6955 | if (comp_dir != NULL) | |
6956 | comp_unit_die->attrs[i++] = *comp_dir; | |
6957 | comp_unit_die->num_attrs += num_extra_attrs; | |
6958 | ||
b4f54984 | 6959 | if (dwarf_die_debug) |
bf6af496 DE |
6960 | { |
6961 | fprintf_unfiltered (gdb_stdlog, | |
6962 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6963 | section->get_name (), |
bf6af496 DE |
6964 | (unsigned) (begin_info_ptr - section->buffer), |
6965 | bfd_get_filename (abfd)); | |
b4f54984 | 6966 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6967 | } |
6968 | ||
b0c7bfa9 DE |
6969 | /* Skip dummy compilation units. */ |
6970 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6971 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6972 | return 0; | |
6973 | ||
6974 | *result_info_ptr = info_ptr; | |
6975 | return 1; | |
6976 | } | |
6977 | ||
a084a2a6 AT |
6978 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
6979 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
6980 | signature is part of the header. */ | |
6981 | static gdb::optional<ULONGEST> | |
6982 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
6983 | { | |
6984 | if (cu->header.version >= 5) | |
6985 | return cu->header.signature; | |
6986 | struct attribute *attr; | |
6987 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
6988 | if (attr == nullptr) | |
6989 | return gdb::optional<ULONGEST> (); | |
6990 | return DW_UNSND (attr); | |
6991 | } | |
6992 | ||
c0ab21c2 | 6993 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6994 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 6995 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
6996 | |
6997 | static struct dwo_unit * | |
4ab09049 | 6998 | lookup_dwo_unit (dwarf2_cu *cu, die_info *comp_unit_die, const char *dwo_name) |
b0c7bfa9 | 6999 | { |
4ab09049 | 7000 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
b0c7bfa9 | 7001 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 7002 | const char *comp_dir; |
b0c7bfa9 | 7003 | |
a2ce51a0 DE |
7004 | gdb_assert (cu != NULL); |
7005 | ||
b0c7bfa9 | 7006 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 7007 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 7008 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 | 7009 | |
4ab09049 SM |
7010 | if (per_cu->is_debug_types) |
7011 | dwo_unit = lookup_dwo_type_unit (cu, dwo_name, comp_dir); | |
b0c7bfa9 DE |
7012 | else |
7013 | { | |
a084a2a6 | 7014 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
4ab09049 | 7015 | |
a084a2a6 | 7016 | if (!signature.has_value ()) |
b0c7bfa9 DE |
7017 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
7018 | " [in module %s]"), | |
4ab09049 SM |
7019 | dwo_name, bfd_get_filename (per_cu->per_bfd->obfd)); |
7020 | ||
7021 | dwo_unit = lookup_dwo_comp_unit (cu, dwo_name, comp_dir, *signature); | |
b0c7bfa9 DE |
7022 | } |
7023 | ||
b0c7bfa9 DE |
7024 | return dwo_unit; |
7025 | } | |
7026 | ||
c0ab21c2 | 7027 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 7028 | See it for a description of the parameters. |
fcd3b13d | 7029 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 7030 | |
c0ab21c2 | 7031 | void |
9e021579 SM |
7032 | cutu_reader::init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
7033 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 7034 | dwarf2_cu *existing_cu) |
a2ce51a0 | 7035 | { |
a2ce51a0 | 7036 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7037 | |
7038 | /* Verify we can do the following downcast, and that we have the | |
7039 | data we need. */ | |
7040 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7041 | sig_type = (struct signatured_type *) this_cu; | |
7042 | gdb_assert (sig_type->dwo_unit != NULL); | |
7043 | ||
2e671100 SM |
7044 | dwarf2_cu *cu; |
7045 | ||
7046 | if (existing_cu != nullptr) | |
6aa5f3a6 | 7047 | { |
2e671100 SM |
7048 | cu = existing_cu; |
7049 | gdb_assert (cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 7050 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 7051 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
7052 | } |
7053 | else | |
7054 | { | |
7188ed02 SM |
7055 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
7056 | in per_objfile yet. */ | |
7057 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); | |
9e021579 | 7058 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
2e671100 | 7059 | cu = m_new_cu.get (); |
6aa5f3a6 DE |
7060 | } |
7061 | ||
7062 | /* A future optimization, if needed, would be to use an existing | |
7063 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7064 | could share abbrev tables. */ | |
a2ce51a0 | 7065 | |
2e671100 | 7066 | if (read_cutu_die_from_dwo (cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7067 | NULL /* stub_comp_unit_die */, |
7068 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 7069 | this, &info_ptr, |
3e225074 | 7070 | &comp_unit_die, |
c0ab21c2 | 7071 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
7072 | { |
7073 | /* Dummy die. */ | |
c0ab21c2 | 7074 | dummy_p = true; |
a2ce51a0 | 7075 | } |
a2ce51a0 DE |
7076 | } |
7077 | ||
fd820528 | 7078 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7079 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7080 | |
f4dc4d17 DE |
7081 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7082 | Otherwise the table specified in the comp unit header is read in and used. | |
7083 | This is an optimization for when we already have the abbrev table. | |
7084 | ||
2e671100 SM |
7085 | If EXISTING_CU is non-NULL, then use it. Otherwise, a new CU is |
7086 | allocated. */ | |
aaa75496 | 7087 | |
ab432490 | 7088 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7089 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 | 7090 | struct abbrev_table *abbrev_table, |
2e671100 | 7091 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
7092 | bool skip_partial) |
7093 | : die_reader_specs {}, | |
6751ebae | 7094 | m_this_cu (this_cu) |
c906108c | 7095 | { |
976ca316 | 7096 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7097 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7098 | bfd *abfd = section->get_bfd_owner (); |
c0ab21c2 | 7099 | const gdb_byte *begin_info_ptr; |
dee91e82 | 7100 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7101 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7102 | /* Non-zero if CU currently points to a DWO file and we need to |
7103 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7104 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7105 | int rereading_dwo_cu = 0; |
c906108c | 7106 | |
b4f54984 | 7107 | if (dwarf_die_debug) |
9d8780f0 | 7108 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7109 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7110 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7111 | |
a2ce51a0 DE |
7112 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7113 | file (instead of going through the stub), short-circuit all of this. */ | |
7114 | if (this_cu->reading_dwo_directly) | |
7115 | { | |
7116 | /* Narrow down the scope of possibilities to have to understand. */ | |
7117 | gdb_assert (this_cu->is_debug_types); | |
7118 | gdb_assert (abbrev_table == NULL); | |
976ca316 | 7119 | init_tu_and_read_dwo_dies (this_cu, per_objfile, existing_cu); |
a2ce51a0 DE |
7120 | return; |
7121 | } | |
7122 | ||
dee91e82 | 7123 | /* This is cheap if the section is already read in. */ |
96b79293 | 7124 | section->read (objfile); |
dee91e82 | 7125 | |
9c541725 | 7126 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7127 | |
7128 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7129 | |
2e671100 SM |
7130 | dwarf2_cu *cu; |
7131 | ||
7132 | if (existing_cu != nullptr) | |
dee91e82 | 7133 | { |
2e671100 | 7134 | cu = existing_cu; |
42e7ad6c DE |
7135 | /* If this CU is from a DWO file we need to start over, we need to |
7136 | refetch the attributes from the skeleton CU. | |
7137 | This could be optimized by retrieving those attributes from when we | |
7138 | were here the first time: the previous comp_unit_die was stored in | |
7139 | comp_unit_obstack. But there's no data yet that we need this | |
7140 | optimization. */ | |
7141 | if (cu->dwo_unit != NULL) | |
7142 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7143 | } |
7144 | else | |
7145 | { | |
7188ed02 SM |
7146 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
7147 | in per_objfile yet. */ | |
976ca316 SM |
7148 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
7149 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); | |
c0ab21c2 | 7150 | cu = m_new_cu.get (); |
42e7ad6c | 7151 | } |
dee91e82 | 7152 | |
b0c7bfa9 | 7153 | /* Get the header. */ |
9c541725 | 7154 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7155 | { |
7156 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7157 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7158 | } |
7159 | else | |
7160 | { | |
3019eac3 | 7161 | if (this_cu->is_debug_types) |
dee91e82 | 7162 | { |
976ca316 SM |
7163 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7164 | section, abbrev_section, | |
7165 | info_ptr, rcuh_kind::TYPE); | |
dee91e82 | 7166 | |
42e7ad6c DE |
7167 | /* Since per_cu is the first member of struct signatured_type, |
7168 | we can go from a pointer to one to a pointer to the other. */ | |
7169 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7170 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7171 | gdb_assert (sig_type->type_offset_in_tu |
7172 | == cu->header.type_cu_offset_in_tu); | |
7173 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7174 | |
42e7ad6c DE |
7175 | /* LENGTH has not been set yet for type units if we're |
7176 | using .gdb_index. */ | |
4057dfde | 7177 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
7178 | |
7179 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7180 | sig_type->type_offset_in_section = |
7181 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7182 | |
7183 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7184 | } |
7185 | else | |
7186 | { | |
976ca316 SM |
7187 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7188 | section, abbrev_section, | |
43988095 JK |
7189 | info_ptr, |
7190 | rcuh_kind::COMPILE); | |
dee91e82 | 7191 | |
9c541725 | 7192 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
3ee6bb11 TV |
7193 | if (this_cu->length == 0) |
7194 | this_cu->length = cu->header.get_length (); | |
7195 | else | |
7196 | gdb_assert (this_cu->length == cu->header.get_length ()); | |
43988095 | 7197 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7198 | } |
7199 | } | |
10b3939b | 7200 | |
6caca83c | 7201 | /* Skip dummy compilation units. */ |
dee91e82 | 7202 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7203 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7204 | { |
7205 | dummy_p = true; | |
7206 | return; | |
7207 | } | |
6caca83c | 7208 | |
433df2d4 DE |
7209 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7210 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7211 | done. */ |
f4dc4d17 | 7212 | if (abbrev_table != NULL) |
685af9cd TT |
7213 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7214 | else | |
f4dc4d17 | 7215 | { |
c0ab21c2 | 7216 | m_abbrev_table_holder |
86de1d91 TT |
7217 | = abbrev_table::read (objfile, abbrev_section, |
7218 | cu->header.abbrev_sect_off); | |
c0ab21c2 | 7219 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7220 | } |
af703f96 | 7221 | |
dee91e82 | 7222 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 7223 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 7224 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 7225 | |
58f0c718 | 7226 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7227 | { |
7228 | dummy_p = true; | |
7229 | return; | |
7230 | } | |
58f0c718 | 7231 | |
b0c7bfa9 | 7232 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7233 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7234 | table from the DWO file and pass the ownership over to us. It will be | |
7235 | referenced from READER, so we must make sure to free it after we're done | |
7236 | with READER. | |
7237 | ||
b0c7bfa9 DE |
7238 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7239 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7240 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7241 | if (dwo_name != nullptr) |
3019eac3 | 7242 | { |
3019eac3 | 7243 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7244 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 7245 | |
3e225074 | 7246 | if (comp_unit_die->has_children) |
6a506a2d | 7247 | { |
b98664d3 | 7248 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7249 | " has children (offset %s) [in module %s]"), |
7250 | sect_offset_str (this_cu->sect_off), | |
7251 | bfd_get_filename (abfd)); | |
6a506a2d | 7252 | } |
4ab09049 | 7253 | dwo_unit = lookup_dwo_unit (cu, comp_unit_die, dwo_name); |
6a506a2d | 7254 | if (dwo_unit != NULL) |
3019eac3 | 7255 | { |
4ab09049 | 7256 | if (read_cutu_die_from_dwo (cu, dwo_unit, |
a2ce51a0 | 7257 | comp_unit_die, NULL, |
c0ab21c2 | 7258 | this, &info_ptr, |
3e225074 | 7259 | &dwo_comp_unit_die, |
c0ab21c2 | 7260 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7261 | { |
7262 | /* Dummy die. */ | |
c0ab21c2 | 7263 | dummy_p = true; |
6a506a2d DE |
7264 | return; |
7265 | } | |
7266 | comp_unit_die = dwo_comp_unit_die; | |
7267 | } | |
7268 | else | |
7269 | { | |
7270 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7271 | the stub. A complaint has already been logged. There's | |
7272 | not much more we can do except pass on the stub DIE to | |
7273 | die_reader_func. We don't want to throw an error on bad | |
7274 | debug info. */ | |
3019eac3 DE |
7275 | } |
7276 | } | |
c0ab21c2 | 7277 | } |
3019eac3 | 7278 | |
6751ebae TT |
7279 | void |
7280 | cutu_reader::keep () | |
c0ab21c2 | 7281 | { |
b0c7bfa9 | 7282 | /* Done, clean up. */ |
6751ebae TT |
7283 | gdb_assert (!dummy_p); |
7284 | if (m_new_cu != NULL) | |
348e048f | 7285 | { |
7188ed02 SM |
7286 | /* Save this dwarf2_cu in the per_objfile. The per_objfile owns it |
7287 | now. */ | |
7288 | dwarf2_per_objfile *per_objfile = m_new_cu->per_objfile; | |
7289 | per_objfile->set_cu (m_this_cu, m_new_cu.release ()); | |
348e048f | 7290 | } |
dee91e82 DE |
7291 | } |
7292 | ||
18a8505e AT |
7293 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7294 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7295 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7296 | |
7297 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7298 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7299 | |
7300 | We fill in THIS_CU->length. | |
7301 | ||
dee91e82 | 7302 | THIS_CU->cu is always freed when done. |
3019eac3 | 7303 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7304 | to care whether it refers to the "main" CU or the DWO CU. |
7305 | ||
7306 | When parent_cu is passed, it is used to provide a default value for | |
7307 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7308 | |
ab432490 | 7309 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7310 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
7311 | struct dwarf2_cu *parent_cu, |
7312 | struct dwo_file *dwo_file) | |
7313 | : die_reader_specs {}, | |
7314 | m_this_cu (this_cu) | |
dee91e82 | 7315 | { |
976ca316 | 7316 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7317 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7318 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7319 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7320 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7321 | |
b4f54984 | 7322 | if (dwarf_die_debug) |
9d8780f0 | 7323 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7324 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7325 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7326 | |
976ca316 | 7327 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
dee91e82 | 7328 | |
33e80786 DE |
7329 | abbrev_section = (dwo_file != NULL |
7330 | ? &dwo_file->sections.abbrev | |
7331 | : get_abbrev_section_for_cu (this_cu)); | |
7332 | ||
dee91e82 | 7333 | /* This is cheap if the section is already read in. */ |
96b79293 | 7334 | section->read (objfile); |
dee91e82 | 7335 | |
976ca316 | 7336 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
dee91e82 | 7337 | |
9c541725 | 7338 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
976ca316 SM |
7339 | info_ptr = read_and_check_comp_unit_head (per_objfile, &m_new_cu->header, |
7340 | section, abbrev_section, info_ptr, | |
43988095 JK |
7341 | (this_cu->is_debug_types |
7342 | ? rcuh_kind::TYPE | |
7343 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7344 | |
18a8505e AT |
7345 | if (parent_cu != nullptr) |
7346 | { | |
c0ab21c2 TT |
7347 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7348 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7349 | } |
4057dfde | 7350 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7351 | |
7352 | /* Skip dummy compilation units. */ | |
7353 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7354 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7355 | { |
7356 | dummy_p = true; | |
7357 | return; | |
7358 | } | |
72bf9492 | 7359 | |
c0ab21c2 | 7360 | m_abbrev_table_holder |
86de1d91 TT |
7361 | = abbrev_table::read (objfile, abbrev_section, |
7362 | m_new_cu->header.abbrev_sect_off); | |
dee91e82 | 7363 | |
c0ab21c2 TT |
7364 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7365 | m_abbrev_table_holder.get ()); | |
3e225074 | 7366 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7367 | } |
7368 | ||
0018ea6f DE |
7369 | \f |
7370 | /* Type Unit Groups. | |
dee91e82 | 7371 | |
0018ea6f DE |
7372 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7373 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7374 | so that all types coming from the same compilation (.o file) are grouped | |
7375 | together. A future step could be to put the types in the same symtab as | |
7376 | the CU the types ultimately came from. */ | |
ff013f42 | 7377 | |
f4dc4d17 DE |
7378 | static hashval_t |
7379 | hash_type_unit_group (const void *item) | |
7380 | { | |
9a3c8263 SM |
7381 | const struct type_unit_group *tu_group |
7382 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7383 | |
094b34ac | 7384 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7385 | } |
348e048f DE |
7386 | |
7387 | static int | |
f4dc4d17 | 7388 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7389 | { |
9a3c8263 SM |
7390 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7391 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7392 | |
094b34ac | 7393 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7394 | } |
348e048f | 7395 | |
f4dc4d17 DE |
7396 | /* Allocate a hash table for type unit groups. */ |
7397 | ||
eaa5fa8b | 7398 | static htab_up |
298e9637 | 7399 | allocate_type_unit_groups_table () |
f4dc4d17 | 7400 | { |
eaa5fa8b TT |
7401 | return htab_up (htab_create_alloc (3, |
7402 | hash_type_unit_group, | |
7403 | eq_type_unit_group, | |
7404 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7405 | } |
dee91e82 | 7406 | |
f4dc4d17 DE |
7407 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7408 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7409 | of any one psymtab grow too big. */ | |
7410 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7411 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7412 | |
094b34ac | 7413 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7414 | Create the type_unit_group object used to hold one or more TUs. */ |
7415 | ||
7416 | static struct type_unit_group * | |
094b34ac | 7417 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7418 | { |
976ca316 SM |
7419 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7420 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
094b34ac | 7421 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7422 | struct type_unit_group *tu_group; |
f4dc4d17 | 7423 | |
976ca316 | 7424 | tu_group = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, type_unit_group); |
094b34ac | 7425 | per_cu = &tu_group->per_cu; |
1859c670 | 7426 | per_cu->per_bfd = per_bfd; |
f4dc4d17 | 7427 | |
1859c670 | 7428 | if (per_bfd->using_index) |
094b34ac | 7429 | { |
1859c670 | 7430 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
094b34ac | 7431 | struct dwarf2_per_cu_quick_data); |
094b34ac DE |
7432 | } |
7433 | else | |
7434 | { | |
9c541725 | 7435 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7436 | dwarf2_psymtab *pst; |
528e1572 | 7437 | std::string name; |
094b34ac DE |
7438 | |
7439 | /* Give the symtab a useful name for debug purposes. */ | |
7440 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7441 | name = string_printf ("<type_units_%d>", |
7442 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7443 | else |
528e1572 | 7444 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7445 | |
976ca316 | 7446 | pst = create_partial_symtab (per_cu, per_objfile, name.c_str ()); |
6d94535f | 7447 | pst->anonymous = true; |
094b34ac | 7448 | } |
f4dc4d17 | 7449 | |
094b34ac | 7450 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7451 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7452 | |
7453 | return tu_group; | |
7454 | } | |
7455 | ||
094b34ac DE |
7456 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7457 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7458 | |
7459 | static struct type_unit_group * | |
ff39bb5e | 7460 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7461 | { |
976ca316 SM |
7462 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7463 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; | |
f4dc4d17 DE |
7464 | struct type_unit_group *tu_group; |
7465 | void **slot; | |
7466 | unsigned int line_offset; | |
7467 | struct type_unit_group type_unit_group_for_lookup; | |
7468 | ||
976ca316 SM |
7469 | if (per_objfile->per_bfd->type_unit_groups == NULL) |
7470 | per_objfile->per_bfd->type_unit_groups = allocate_type_unit_groups_table (); | |
f4dc4d17 DE |
7471 | |
7472 | /* Do we need to create a new group, or can we use an existing one? */ | |
7473 | ||
7474 | if (stmt_list) | |
7475 | { | |
7476 | line_offset = DW_UNSND (stmt_list); | |
7477 | ++tu_stats->nr_symtab_sharers; | |
7478 | } | |
7479 | else | |
7480 | { | |
7481 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7482 | We can do various things here like create one group per TU or | |
7483 | spread them over multiple groups to split up the expansion work. | |
7484 | To avoid worst case scenarios (too many groups or too large groups) | |
7485 | we, umm, group them in bunches. */ | |
7486 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7487 | | (tu_stats->nr_stmt_less_type_units | |
7488 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7489 | ++tu_stats->nr_stmt_less_type_units; | |
7490 | } | |
7491 | ||
094b34ac | 7492 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7493 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
976ca316 | 7494 | slot = htab_find_slot (per_objfile->per_bfd->type_unit_groups.get (), |
f4dc4d17 DE |
7495 | &type_unit_group_for_lookup, INSERT); |
7496 | if (*slot != NULL) | |
7497 | { | |
9a3c8263 | 7498 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7499 | gdb_assert (tu_group != NULL); |
7500 | } | |
7501 | else | |
7502 | { | |
9c541725 | 7503 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7504 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7505 | *slot = tu_group; |
7506 | ++tu_stats->nr_symtabs; | |
7507 | } | |
7508 | ||
7509 | return tu_group; | |
7510 | } | |
0018ea6f DE |
7511 | \f |
7512 | /* Partial symbol tables. */ | |
7513 | ||
7514 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7515 | ||
7516 | The caller must fill in the following details: | |
7517 | dirname, textlow, texthigh. */ | |
7518 | ||
891813be | 7519 | static dwarf2_psymtab * |
7aa104c4 SM |
7520 | create_partial_symtab (dwarf2_per_cu_data *per_cu, |
7521 | dwarf2_per_objfile *per_objfile, | |
7522 | const char *name) | |
0018ea6f | 7523 | { |
7aa104c4 | 7524 | struct objfile *objfile = per_objfile->objfile; |
891813be | 7525 | dwarf2_psymtab *pst; |
0018ea6f | 7526 | |
9f4e76a4 | 7527 | pst = new dwarf2_psymtab (name, objfile, per_cu); |
0018ea6f | 7528 | |
6d94535f | 7529 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7530 | |
7531 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7532 | per_cu->v.psymtab = pst; |
7533 | ||
7534 | return pst; | |
7535 | } | |
7536 | ||
c0ab21c2 | 7537 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7538 | |
7539 | static void | |
7540 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7541 | const gdb_byte *info_ptr, |
0018ea6f | 7542 | struct die_info *comp_unit_die, |
c0ab21c2 | 7543 | enum language pretend_language) |
0018ea6f DE |
7544 | { |
7545 | struct dwarf2_cu *cu = reader->cu; | |
7aa104c4 SM |
7546 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7547 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 7548 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7549 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7550 | CORE_ADDR baseaddr; |
7551 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7552 | dwarf2_psymtab *pst; |
3a2b436a | 7553 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7554 | const char *filename; |
0018ea6f | 7555 | |
0018ea6f DE |
7556 | gdb_assert (! per_cu->is_debug_types); |
7557 | ||
c0ab21c2 | 7558 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7559 | |
0018ea6f | 7560 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7561 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7562 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7563 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7564 | if (filename == NULL) | |
0018ea6f | 7565 | filename = ""; |
2e927613 TV |
7566 | else if (strcmp (filename, artificial) == 0) |
7567 | { | |
7568 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7569 | sect_offset_str (per_cu->sect_off), |
7570 | (char *) NULL)); | |
2e927613 TV |
7571 | filename = debug_filename.get (); |
7572 | } | |
0018ea6f | 7573 | |
7aa104c4 | 7574 | pst = create_partial_symtab (per_cu, per_objfile, filename); |
0018ea6f DE |
7575 | |
7576 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7577 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7578 | |
b3b3bada | 7579 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7580 | |
7581 | dwarf2_find_base_address (comp_unit_die, cu); | |
7582 | ||
7583 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7584 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7585 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7586 | &best_highpc, cu, pst); | |
7587 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7588 | { |
7589 | CORE_ADDR low | |
7590 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7591 | - baseaddr); | |
7592 | CORE_ADDR high | |
7593 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7594 | - baseaddr - 1); | |
7595 | /* Store the contiguous range if it is not empty; it can be | |
7596 | empty for CUs with no code. */ | |
d320c2b5 TT |
7597 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7598 | low, high, pst); | |
79748972 | 7599 | } |
0018ea6f DE |
7600 | |
7601 | /* Check if comp unit has_children. | |
7602 | If so, read the rest of the partial symbols from this comp unit. | |
7603 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7604 | if (comp_unit_die->has_children) |
0018ea6f DE |
7605 | { |
7606 | struct partial_die_info *first_die; | |
7607 | CORE_ADDR lowpc, highpc; | |
7608 | ||
7609 | lowpc = ((CORE_ADDR) -1); | |
7610 | highpc = ((CORE_ADDR) 0); | |
7611 | ||
7612 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7613 | ||
7614 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7615 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7616 | |
7617 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7618 | complaints from `maint check'. */ | |
7619 | if (lowpc == ((CORE_ADDR) -1)) | |
7620 | lowpc = highpc; | |
7621 | ||
7622 | /* If the compilation unit didn't have an explicit address range, | |
7623 | then use the information extracted from its child dies. */ | |
e385593e | 7624 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7625 | { |
7626 | best_lowpc = lowpc; | |
7627 | best_highpc = highpc; | |
7628 | } | |
7629 | } | |
4ae976d1 | 7630 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7631 | best_lowpc + baseaddr) |
7632 | - baseaddr); | |
4ae976d1 | 7633 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7634 | best_highpc + baseaddr) |
7635 | - baseaddr); | |
0018ea6f | 7636 | |
8763cede | 7637 | end_psymtab_common (objfile, pst); |
0018ea6f | 7638 | |
ae640021 | 7639 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7640 | { |
7641 | int i; | |
ae640021 | 7642 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7643 | |
7644 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7645 | post-pass. */ | |
7646 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7647 | pst->dependencies |
7648 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7649 | for (i = 0; i < len; ++i) |
7650 | { | |
7651 | pst->dependencies[i] | |
7652 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7653 | } | |
0018ea6f | 7654 | |
ae640021 | 7655 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7656 | } |
7657 | ||
7658 | /* Get the list of files included in the current compilation unit, | |
7659 | and build a psymtab for each of them. */ | |
7660 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7661 | ||
b4f54984 | 7662 | if (dwarf_read_debug) |
b926417a TT |
7663 | fprintf_unfiltered (gdb_stdlog, |
7664 | "Psymtab for %s unit @%s: %s - %s" | |
7665 | ", %d global, %d static syms\n", | |
7666 | per_cu->is_debug_types ? "type" : "comp", | |
7667 | sect_offset_str (per_cu->sect_off), | |
7668 | paddress (gdbarch, pst->text_low (objfile)), | |
7669 | paddress (gdbarch, pst->text_high (objfile)), | |
7670 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
7671 | } |
7672 | ||
7673 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7674 | Process compilation unit THIS_CU for a psymtab. */ | |
7675 | ||
7676 | static void | |
ab432490 SM |
7677 | process_psymtab_comp_unit (dwarf2_per_cu_data *this_cu, |
7678 | dwarf2_per_objfile *per_objfile, | |
135f5437 | 7679 | bool want_partial_unit, |
b93601f3 | 7680 | enum language pretend_language) |
0018ea6f DE |
7681 | { |
7682 | /* If this compilation unit was already read in, free the | |
7683 | cached copy in order to read it in again. This is | |
7684 | necessary because we skipped some symbols when we first | |
7685 | read in the compilation unit (see load_partial_dies). | |
7686 | This problem could be avoided, but the benefit is unclear. */ | |
7188ed02 | 7687 | per_objfile->remove_cu (this_cu); |
0018ea6f | 7688 | |
2e671100 | 7689 | cutu_reader reader (this_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 | 7690 | |
58990295 TV |
7691 | switch (reader.comp_unit_die->tag) |
7692 | { | |
7693 | case DW_TAG_compile_unit: | |
7694 | this_cu->unit_type = DW_UT_compile; | |
7695 | break; | |
7696 | case DW_TAG_partial_unit: | |
7697 | this_cu->unit_type = DW_UT_partial; | |
7698 | break; | |
7699 | default: | |
7700 | abort (); | |
7701 | } | |
7702 | ||
c0ab21c2 | 7703 | if (reader.dummy_p) |
f1902523 | 7704 | { |
c0ab21c2 | 7705 | /* Nothing. */ |
f1902523 | 7706 | } |
c0ab21c2 | 7707 | else if (this_cu->is_debug_types) |
3e225074 TT |
7708 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7709 | reader.comp_unit_die); | |
135f5437 TT |
7710 | else if (want_partial_unit |
7711 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7712 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7713 | reader.comp_unit_die, | |
c0ab21c2 | 7714 | pretend_language); |
0018ea6f | 7715 | |
7188ed02 | 7716 | this_cu->lang = reader.cu->language; |
58990295 | 7717 | |
0018ea6f | 7718 | /* Age out any secondary CUs. */ |
7188ed02 | 7719 | per_objfile->age_comp_units (); |
0018ea6f | 7720 | } |
f4dc4d17 DE |
7721 | |
7722 | /* Reader function for build_type_psymtabs. */ | |
7723 | ||
7724 | static void | |
7725 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7726 | const gdb_byte *info_ptr, |
3e225074 | 7727 | struct die_info *type_unit_die) |
f4dc4d17 | 7728 | { |
976ca316 SM |
7729 | dwarf2_per_objfile *per_objfile = reader->cu->per_objfile; |
7730 | struct objfile *objfile = per_objfile->objfile; | |
f4dc4d17 DE |
7731 | struct dwarf2_cu *cu = reader->cu; |
7732 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7733 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7734 | struct type_unit_group *tu_group; |
7735 | struct attribute *attr; | |
7736 | struct partial_die_info *first_die; | |
7737 | CORE_ADDR lowpc, highpc; | |
891813be | 7738 | dwarf2_psymtab *pst; |
f4dc4d17 | 7739 | |
0186c6a7 DE |
7740 | gdb_assert (per_cu->is_debug_types); |
7741 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7742 | |
3e225074 | 7743 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7744 | return; |
7745 | ||
052c8bb8 | 7746 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7747 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7748 | |
df07e2c7 | 7749 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7750 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7751 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7752 | |
7753 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
976ca316 | 7754 | pst = create_partial_symtab (per_cu, per_objfile, ""); |
6d94535f | 7755 | pst->anonymous = true; |
f4dc4d17 DE |
7756 | |
7757 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7758 | ||
7759 | lowpc = (CORE_ADDR) -1; | |
7760 | highpc = (CORE_ADDR) 0; | |
7761 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7762 | ||
8763cede | 7763 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
7764 | } |
7765 | ||
73051182 DE |
7766 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7767 | ||
7768 | struct tu_abbrev_offset | |
7769 | { | |
b2bdb8cf SM |
7770 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7771 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7772 | {} | |
7773 | ||
7774 | signatured_type *sig_type; | |
73051182 DE |
7775 | sect_offset abbrev_offset; |
7776 | }; | |
7777 | ||
484cf504 | 7778 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7779 | |
484cf504 TT |
7780 | static bool |
7781 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7782 | const struct tu_abbrev_offset &b) | |
73051182 | 7783 | { |
484cf504 | 7784 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7785 | } |
7786 | ||
7787 | /* Efficiently read all the type units. | |
7788 | This does the bulk of the work for build_type_psymtabs. | |
7789 | ||
7790 | The efficiency is because we sort TUs by the abbrev table they use and | |
7791 | only read each abbrev table once. In one program there are 200K TUs | |
7792 | sharing 8K abbrev tables. | |
7793 | ||
7794 | The main purpose of this function is to support building the | |
5989a64e | 7795 | dwarf2_per_objfile->per_bfd->type_unit_groups table. |
73051182 DE |
7796 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we |
7797 | can collapse the search space by grouping them by stmt_list. | |
7798 | The savings can be significant, in the same program from above the 200K TUs | |
7799 | share 8K stmt_list tables. | |
7800 | ||
7801 | FUNC is expected to call get_type_unit_group, which will create the | |
7802 | struct type_unit_group if necessary and add it to | |
5989a64e | 7803 | dwarf2_per_objfile->per_bfd->type_unit_groups. */ |
73051182 DE |
7804 | |
7805 | static void | |
976ca316 | 7806 | build_type_psymtabs_1 (dwarf2_per_objfile *per_objfile) |
73051182 | 7807 | { |
976ca316 | 7808 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
685af9cd | 7809 | abbrev_table_up abbrev_table; |
73051182 | 7810 | sect_offset abbrev_offset; |
73051182 DE |
7811 | |
7812 | /* It's up to the caller to not call us multiple times. */ | |
976ca316 | 7813 | gdb_assert (per_objfile->per_bfd->type_unit_groups == NULL); |
73051182 | 7814 | |
976ca316 | 7815 | if (per_objfile->per_bfd->all_type_units.empty ()) |
73051182 DE |
7816 | return; |
7817 | ||
7818 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7819 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7820 | read each abbrev table in. | |
7821 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7822 | This is simpler and efficient enough for now. | |
7823 | ||
7824 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7825 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7826 | stmt_list value too so in practice this should work well. | |
7827 | ||
7828 | The basic algorithm here is: | |
7829 | ||
7830 | sort TUs by abbrev table | |
7831 | for each TU with same abbrev table: | |
7832 | read abbrev table if first user | |
7833 | read TU top level DIE | |
7834 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7835 | call FUNC */ | |
7836 | ||
b4f54984 | 7837 | if (dwarf_read_debug) |
73051182 DE |
7838 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
7839 | ||
7840 | /* Sort in a separate table to maintain the order of all_type_units | |
7841 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf | 7842 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
976ca316 | 7843 | sorted_by_abbrev.reserve (per_objfile->per_bfd->all_type_units.size ()); |
b2bdb8cf | 7844 | |
976ca316 | 7845 | for (signatured_type *sig_type : per_objfile->per_bfd->all_type_units) |
b2bdb8cf | 7846 | sorted_by_abbrev.emplace_back |
976ca316 | 7847 | (sig_type, read_abbrev_offset (per_objfile, sig_type->per_cu.section, |
b2bdb8cf | 7848 | sig_type->per_cu.sect_off)); |
73051182 | 7849 | |
484cf504 TT |
7850 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7851 | sort_tu_by_abbrev_offset); | |
73051182 | 7852 | |
9c541725 | 7853 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7854 | |
b2bdb8cf | 7855 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7856 | { |
73051182 DE |
7857 | /* Switch to the next abbrev table if necessary. */ |
7858 | if (abbrev_table == NULL | |
b2bdb8cf | 7859 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7860 | { |
b2bdb8cf | 7861 | abbrev_offset = tu.abbrev_offset; |
73051182 | 7862 | abbrev_table = |
976ca316 SM |
7863 | abbrev_table::read (per_objfile->objfile, |
7864 | &per_objfile->per_bfd->abbrev, abbrev_offset); | |
73051182 DE |
7865 | ++tu_stats->nr_uniq_abbrev_tables; |
7866 | } | |
7867 | ||
976ca316 | 7868 | cutu_reader reader (&tu.sig_type->per_cu, per_objfile, |
2e671100 | 7869 | abbrev_table.get (), nullptr, false); |
c0ab21c2 TT |
7870 | if (!reader.dummy_p) |
7871 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7872 | reader.comp_unit_die); |
73051182 | 7873 | } |
6aa5f3a6 | 7874 | } |
73051182 | 7875 | |
6aa5f3a6 DE |
7876 | /* Print collected type unit statistics. */ |
7877 | ||
7878 | static void | |
976ca316 | 7879 | print_tu_stats (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 | 7880 | { |
976ca316 | 7881 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
6aa5f3a6 DE |
7882 | |
7883 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf | 7884 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
976ca316 | 7885 | per_objfile->per_bfd->all_type_units.size ()); |
6aa5f3a6 DE |
7886 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
7887 | tu_stats->nr_uniq_abbrev_tables); | |
7888 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
7889 | tu_stats->nr_symtabs); | |
7890 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
7891 | tu_stats->nr_symtab_sharers); | |
7892 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
7893 | tu_stats->nr_stmt_less_type_units); | |
7894 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
7895 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7896 | } |
7897 | ||
f4dc4d17 DE |
7898 | /* Traversal function for build_type_psymtabs. */ |
7899 | ||
7900 | static int | |
7901 | build_type_psymtab_dependencies (void **slot, void *info) | |
7902 | { | |
976ca316 SM |
7903 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
7904 | struct objfile *objfile = per_objfile->objfile; | |
f4dc4d17 | 7905 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; |
094b34ac | 7906 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 7907 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 7908 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7909 | int i; |
7910 | ||
7911 | gdb_assert (len > 0); | |
197400e8 | 7912 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
7913 | |
7914 | pst->number_of_dependencies = len; | |
a9342b62 | 7915 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7916 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7917 | { |
df07e2c7 | 7918 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
7919 | gdb_assert (iter->per_cu.is_debug_types); |
7920 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 7921 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7922 | } |
7923 | ||
df07e2c7 AB |
7924 | delete tu_group->tus; |
7925 | tu_group->tus = nullptr; | |
348e048f DE |
7926 | |
7927 | return 1; | |
7928 | } | |
7929 | ||
7930 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7931 | Build partial symbol tables for the .debug_types comp-units. */ | |
7932 | ||
7933 | static void | |
976ca316 | 7934 | build_type_psymtabs (dwarf2_per_objfile *per_objfile) |
348e048f | 7935 | { |
976ca316 | 7936 | if (! create_all_type_units (per_objfile)) |
348e048f DE |
7937 | return; |
7938 | ||
976ca316 | 7939 | build_type_psymtabs_1 (per_objfile); |
6aa5f3a6 | 7940 | } |
f4dc4d17 | 7941 | |
6aa5f3a6 DE |
7942 | /* Traversal function for process_skeletonless_type_unit. |
7943 | Read a TU in a DWO file and build partial symbols for it. */ | |
7944 | ||
7945 | static int | |
7946 | process_skeletonless_type_unit (void **slot, void *info) | |
7947 | { | |
7948 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
976ca316 | 7949 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
6aa5f3a6 DE |
7950 | struct signatured_type find_entry, *entry; |
7951 | ||
7952 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7953 | ||
976ca316 SM |
7954 | if (per_objfile->per_bfd->signatured_types == NULL) |
7955 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
6aa5f3a6 DE |
7956 | |
7957 | find_entry.signature = dwo_unit->signature; | |
976ca316 | 7958 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 7959 | &find_entry, INSERT); |
6aa5f3a6 DE |
7960 | /* If we've already seen this type there's nothing to do. What's happening |
7961 | is we're doing our own version of comdat-folding here. */ | |
7962 | if (*slot != NULL) | |
7963 | return 1; | |
7964 | ||
7965 | /* This does the job that create_all_type_units would have done for | |
7966 | this TU. */ | |
976ca316 SM |
7967 | entry = add_type_unit (per_objfile, dwo_unit->signature, slot); |
7968 | fill_in_sig_entry_from_dwo_entry (per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7969 | *slot = entry; |
7970 | ||
7971 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
976ca316 | 7972 | cutu_reader reader (&entry->per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
7973 | if (!reader.dummy_p) |
7974 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7975 | reader.comp_unit_die); |
6aa5f3a6 DE |
7976 | |
7977 | return 1; | |
7978 | } | |
7979 | ||
7980 | /* Traversal function for process_skeletonless_type_units. */ | |
7981 | ||
7982 | static int | |
7983 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
7984 | { | |
7985 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7986 | ||
7987 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
7988 | htab_traverse_noresize (dwo_file->tus.get (), |
7989 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
7990 | |
7991 | return 1; | |
7992 | } | |
7993 | ||
7994 | /* Scan all TUs of DWO files, verifying we've processed them. | |
7995 | This is needed in case a TU was emitted without its skeleton. | |
7996 | Note: This can't be done until we know what all the DWO files are. */ | |
7997 | ||
7998 | static void | |
976ca316 | 7999 | process_skeletonless_type_units (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 DE |
8000 | { |
8001 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
976ca316 SM |
8002 | if (get_dwp_file (per_objfile) == NULL |
8003 | && per_objfile->per_bfd->dwo_files != NULL) | |
6aa5f3a6 | 8004 | { |
976ca316 | 8005 | htab_traverse_noresize (per_objfile->per_bfd->dwo_files.get (), |
6aa5f3a6 | 8006 | process_dwo_file_for_skeletonless_type_units, |
976ca316 | 8007 | per_objfile); |
6aa5f3a6 | 8008 | } |
348e048f DE |
8009 | } |
8010 | ||
ed2dc618 | 8011 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8012 | |
8013 | static void | |
976ca316 | 8014 | set_partial_user (dwarf2_per_objfile *per_objfile) |
95554aad | 8015 | { |
976ca316 | 8016 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
95554aad | 8017 | { |
891813be | 8018 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 8019 | |
36586728 TT |
8020 | if (pst == NULL) |
8021 | continue; | |
8022 | ||
b76e467d | 8023 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8024 | { |
8025 | /* Set the 'user' field only if it is not already set. */ | |
8026 | if (pst->dependencies[j]->user == NULL) | |
8027 | pst->dependencies[j]->user = pst; | |
8028 | } | |
8029 | } | |
8030 | } | |
8031 | ||
93311388 DE |
8032 | /* Build the partial symbol table by doing a quick pass through the |
8033 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8034 | |
93311388 | 8035 | static void |
976ca316 | 8036 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile) |
93311388 | 8037 | { |
976ca316 | 8038 | struct objfile *objfile = per_objfile->objfile; |
93311388 | 8039 | |
b4f54984 | 8040 | if (dwarf_read_debug) |
45cfd468 DE |
8041 | { |
8042 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8043 | objfile_name (objfile)); |
45cfd468 DE |
8044 | } |
8045 | ||
76935768 | 8046 | scoped_restore restore_reading_psyms |
976ca316 | 8047 | = make_scoped_restore (&per_objfile->per_bfd->reading_partial_symbols, |
76935768 | 8048 | true); |
98bfdba5 | 8049 | |
976ca316 | 8050 | per_objfile->per_bfd->info.read (objfile); |
91c24f0a | 8051 | |
93311388 DE |
8052 | /* Any cached compilation units will be linked by the per-objfile |
8053 | read_in_chain. Make sure to free them when we're done. */ | |
976ca316 | 8054 | free_cached_comp_units freer (per_objfile); |
72bf9492 | 8055 | |
976ca316 | 8056 | build_type_psymtabs (per_objfile); |
348e048f | 8057 | |
976ca316 | 8058 | create_all_comp_units (per_objfile); |
c906108c | 8059 | |
60606b2c TT |
8060 | /* Create a temporary address map on a temporary obstack. We later |
8061 | copy this to the final obstack. */ | |
8268c778 | 8062 | auto_obstack temp_obstack; |
791afaa2 TT |
8063 | |
8064 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 8065 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 8066 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 8067 | |
976ca316 | 8068 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3d5afab3 TV |
8069 | { |
8070 | if (per_cu->v.psymtab != NULL) | |
8071 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
8072 | continue; | |
976ca316 | 8073 | process_psymtab_comp_unit (per_cu, per_objfile, false, |
ab432490 | 8074 | language_minimal); |
3d5afab3 | 8075 | } |
ff013f42 | 8076 | |
6aa5f3a6 | 8077 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
976ca316 | 8078 | process_skeletonless_type_units (per_objfile); |
6aa5f3a6 DE |
8079 | |
8080 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
976ca316 | 8081 | if (per_objfile->per_bfd->type_unit_groups != NULL) |
6aa5f3a6 | 8082 | { |
976ca316 SM |
8083 | htab_traverse_noresize (per_objfile->per_bfd->type_unit_groups.get (), |
8084 | build_type_psymtab_dependencies, per_objfile); | |
6aa5f3a6 DE |
8085 | } |
8086 | ||
b4f54984 | 8087 | if (dwarf_read_debug) |
976ca316 | 8088 | print_tu_stats (per_objfile); |
6aa5f3a6 | 8089 | |
976ca316 | 8090 | set_partial_user (per_objfile); |
95554aad | 8091 | |
d320c2b5 TT |
8092 | objfile->partial_symtabs->psymtabs_addrmap |
8093 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 8094 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
8095 | /* At this point we want to keep the address map. */ |
8096 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8097 | |
b4f54984 | 8098 | if (dwarf_read_debug) |
45cfd468 | 8099 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8100 | objfile_name (objfile)); |
ae038cb0 DJ |
8101 | } |
8102 | ||
dee91e82 DE |
8103 | /* Load the partial DIEs for a secondary CU into memory. |
8104 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8105 | |
dee91e82 | 8106 | static void |
ab432490 | 8107 | load_partial_comp_unit (dwarf2_per_cu_data *this_cu, |
2e671100 SM |
8108 | dwarf2_per_objfile *per_objfile, |
8109 | dwarf2_cu *existing_cu) | |
dee91e82 | 8110 | { |
2e671100 | 8111 | cutu_reader reader (this_cu, per_objfile, nullptr, existing_cu, false); |
c0ab21c2 TT |
8112 | |
8113 | if (!reader.dummy_p) | |
8114 | { | |
8115 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
8116 | language_minimal); | |
8117 | ||
8118 | /* Check if comp unit has_children. | |
8119 | If so, read the rest of the partial symbols from this comp unit. | |
8120 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 8121 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 8122 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
8123 | |
8124 | reader.keep (); | |
c0ab21c2 | 8125 | } |
ae038cb0 DJ |
8126 | } |
8127 | ||
ae038cb0 | 8128 | static void |
976ca316 | 8129 | read_comp_units_from_section (dwarf2_per_objfile *per_objfile, |
36586728 | 8130 | struct dwarf2_section_info *section, |
f1902523 | 8131 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8132 | unsigned int is_dwz) |
ae038cb0 | 8133 | { |
d521ce57 | 8134 | const gdb_byte *info_ptr; |
976ca316 | 8135 | struct objfile *objfile = per_objfile->objfile; |
be391dca | 8136 | |
b4f54984 | 8137 | if (dwarf_read_debug) |
bf6af496 | 8138 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
96b79293 TT |
8139 | section->get_name (), |
8140 | section->get_file_name ()); | |
bf6af496 | 8141 | |
96b79293 | 8142 | section->read (objfile); |
ae038cb0 | 8143 | |
36586728 | 8144 | info_ptr = section->buffer; |
6e70227d | 8145 | |
36586728 | 8146 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8147 | { |
ae038cb0 | 8148 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8149 | |
9c541725 | 8150 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8151 | |
f1902523 | 8152 | comp_unit_head cu_header; |
976ca316 | 8153 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 SM |
8154 | abbrev_section, info_ptr, |
8155 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8156 | |
8157 | /* Save the compilation unit for later lookup. */ | |
f1902523 | 8158 | if (cu_header.unit_type != DW_UT_type) |
976ca316 | 8159 | this_cu = per_objfile->per_bfd->allocate_per_cu (); |
f1902523 JK |
8160 | else |
8161 | { | |
976ca316 | 8162 | auto sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
f1902523 JK |
8163 | sig_type->signature = cu_header.signature; |
8164 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8165 | this_cu = &sig_type->per_cu; | |
8166 | } | |
8167 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8168 | this_cu->sect_off = sect_off; |
f1902523 | 8169 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8170 | this_cu->is_dwz = is_dwz; |
8a0459fd | 8171 | this_cu->section = section; |
ae038cb0 | 8172 | |
976ca316 | 8173 | per_objfile->per_bfd->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8174 | |
8175 | info_ptr = info_ptr + this_cu->length; | |
8176 | } | |
36586728 TT |
8177 | } |
8178 | ||
8179 | /* Create a list of all compilation units in OBJFILE. | |
8180 | This is only done for -readnow and building partial symtabs. */ | |
8181 | ||
8182 | static void | |
976ca316 | 8183 | create_all_comp_units (dwarf2_per_objfile *per_objfile) |
36586728 | 8184 | { |
976ca316 SM |
8185 | gdb_assert (per_objfile->per_bfd->all_comp_units.empty ()); |
8186 | read_comp_units_from_section (per_objfile, &per_objfile->per_bfd->info, | |
8187 | &per_objfile->per_bfd->abbrev, 0); | |
36586728 | 8188 | |
976ca316 | 8189 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
4db1a1dc | 8190 | if (dwz != NULL) |
976ca316 | 8191 | read_comp_units_from_section (per_objfile, &dwz->info, &dwz->abbrev, 1); |
c906108c SS |
8192 | } |
8193 | ||
5734ee8b | 8194 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8195 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8196 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8197 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8198 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8199 | |
72bf9492 DJ |
8200 | static void |
8201 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8202 | CORE_ADDR *highpc, int set_addrmap, |
8203 | struct dwarf2_cu *cu) | |
c906108c | 8204 | { |
72bf9492 | 8205 | struct partial_die_info *pdi; |
c906108c | 8206 | |
91c24f0a DC |
8207 | /* Now, march along the PDI's, descending into ones which have |
8208 | interesting children but skipping the children of the other ones, | |
8209 | until we reach the end of the compilation unit. */ | |
c906108c | 8210 | |
72bf9492 | 8211 | pdi = first_die; |
91c24f0a | 8212 | |
72bf9492 DJ |
8213 | while (pdi != NULL) |
8214 | { | |
52356b79 | 8215 | pdi->fixup (cu); |
c906108c | 8216 | |
f55ee35c | 8217 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8218 | children, so we need to look at them. Ditto for anonymous |
8219 | enums. */ | |
933c6fe4 | 8220 | |
7d00ffec | 8221 | if (pdi->raw_name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8222 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8223 | || pdi->tag == DW_TAG_imported_unit |
8224 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8225 | { |
72bf9492 | 8226 | switch (pdi->tag) |
c906108c SS |
8227 | { |
8228 | case DW_TAG_subprogram: | |
b1dc1806 | 8229 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8230 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
f9b5d5ea TV |
8231 | if (cu->language == language_cplus) |
8232 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
8233 | set_addrmap, cu); | |
c906108c | 8234 | break; |
72929c62 | 8235 | case DW_TAG_constant: |
c906108c SS |
8236 | case DW_TAG_variable: |
8237 | case DW_TAG_typedef: | |
91c24f0a | 8238 | case DW_TAG_union_type: |
317d2668 TV |
8239 | if (!pdi->is_declaration |
8240 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 8241 | { |
72bf9492 | 8242 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8243 | } |
8244 | break; | |
c906108c | 8245 | case DW_TAG_class_type: |
680b30c7 | 8246 | case DW_TAG_interface_type: |
c906108c | 8247 | case DW_TAG_structure_type: |
72bf9492 | 8248 | if (!pdi->is_declaration) |
c906108c | 8249 | { |
72bf9492 | 8250 | add_partial_symbol (pdi, cu); |
c906108c | 8251 | } |
b7fee5a3 KS |
8252 | if ((cu->language == language_rust |
8253 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8254 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8255 | set_addrmap, cu); | |
c906108c | 8256 | break; |
91c24f0a | 8257 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8258 | if (!pdi->is_declaration) |
8259 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8260 | break; |
8261 | case DW_TAG_base_type: | |
a02abb62 | 8262 | case DW_TAG_subrange_type: |
c906108c | 8263 | /* File scope base type definitions are added to the partial |
c5aa993b | 8264 | symbol table. */ |
72bf9492 | 8265 | add_partial_symbol (pdi, cu); |
c906108c | 8266 | break; |
d9fa45fe | 8267 | case DW_TAG_namespace: |
cdc07690 | 8268 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8269 | break; |
5d7cb8df | 8270 | case DW_TAG_module: |
59c35742 AB |
8271 | if (!pdi->is_declaration) |
8272 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8273 | break; |
95554aad TT |
8274 | case DW_TAG_imported_unit: |
8275 | { | |
8276 | struct dwarf2_per_cu_data *per_cu; | |
8277 | ||
f4dc4d17 DE |
8278 | /* For now we don't handle imported units in type units. */ |
8279 | if (cu->per_cu->is_debug_types) | |
8280 | { | |
8281 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8282 | " supported in type units [in module %s]"), | |
5e22e966 | 8283 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
8284 | } |
8285 | ||
e3b94546 | 8286 | per_cu = dwarf2_find_containing_comp_unit |
5e22e966 | 8287 | (pdi->d.sect_off, pdi->is_dwz, cu->per_objfile); |
95554aad TT |
8288 | |
8289 | /* Go read the partial unit, if needed. */ | |
8290 | if (per_cu->v.psymtab == NULL) | |
ab432490 SM |
8291 | process_psymtab_comp_unit (per_cu, cu->per_objfile, true, |
8292 | cu->language); | |
95554aad | 8293 | |
ae640021 | 8294 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8295 | } |
8296 | break; | |
74921315 KS |
8297 | case DW_TAG_imported_declaration: |
8298 | add_partial_symbol (pdi, cu); | |
8299 | break; | |
c906108c SS |
8300 | default: |
8301 | break; | |
8302 | } | |
8303 | } | |
8304 | ||
72bf9492 DJ |
8305 | /* If the die has a sibling, skip to the sibling. */ |
8306 | ||
8307 | pdi = pdi->die_sibling; | |
8308 | } | |
8309 | } | |
8310 | ||
8311 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8312 | |
72bf9492 | 8313 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8314 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8315 | Enumerators are an exception; they use the scope of their parent |
8316 | enumeration type, i.e. the name of the enumeration type is not | |
8317 | prepended to the enumerator. | |
91c24f0a | 8318 | |
72bf9492 DJ |
8319 | There are two complexities. One is DW_AT_specification; in this |
8320 | case "parent" means the parent of the target of the specification, | |
8321 | instead of the direct parent of the DIE. The other is compilers | |
8322 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8323 | the fully qualified name of structure types from their members' | |
8324 | linkage names. This must be done using the DIE's children rather | |
8325 | than the children of any DW_AT_specification target. We only need | |
8326 | to do this for structures at the top level, i.e. if the target of | |
8327 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8328 | have a parent. */ | |
8329 | ||
8330 | /* Compute the scope prefix associated with PDI's parent, in | |
8331 | compilation unit CU. The result will be allocated on CU's | |
8332 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8333 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8334 | static const char * |
72bf9492 DJ |
8335 | partial_die_parent_scope (struct partial_die_info *pdi, |
8336 | struct dwarf2_cu *cu) | |
8337 | { | |
15d034d0 | 8338 | const char *grandparent_scope; |
72bf9492 | 8339 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8340 | |
72bf9492 DJ |
8341 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8342 | then this means the parent of the specification DIE. */ | |
8343 | ||
8344 | real_pdi = pdi; | |
72bf9492 | 8345 | while (real_pdi->has_specification) |
fb816e8b | 8346 | { |
122cf0f2 AB |
8347 | auto res = find_partial_die (real_pdi->spec_offset, |
8348 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8349 | real_pdi = res.pdi; |
8350 | cu = res.cu; | |
8351 | } | |
72bf9492 DJ |
8352 | |
8353 | parent = real_pdi->die_parent; | |
8354 | if (parent == NULL) | |
8355 | return NULL; | |
8356 | ||
8357 | if (parent->scope_set) | |
8358 | return parent->scope; | |
8359 | ||
52356b79 | 8360 | parent->fixup (cu); |
72bf9492 | 8361 | |
10b3939b | 8362 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8363 | |
acebe513 UW |
8364 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8365 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8366 | Work around this problem here. */ | |
8367 | if (cu->language == language_cplus | |
6e70227d | 8368 | && parent->tag == DW_TAG_namespace |
7d00ffec | 8369 | && strcmp (parent->name (cu), "::") == 0 |
acebe513 UW |
8370 | && grandparent_scope == NULL) |
8371 | { | |
8372 | parent->scope = NULL; | |
8373 | parent->scope_set = 1; | |
8374 | return NULL; | |
8375 | } | |
8376 | ||
0a4b0913 | 8377 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8378 | if (pdi->tag == DW_TAG_enumerator) |
8379 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8380 | parent->scope = grandparent_scope; | |
8381 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8382 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8383 | || parent->tag == DW_TAG_structure_type |
8384 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8385 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8386 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8387 | || parent->tag == DW_TAG_enumeration_type |
8388 | || (cu->language == language_fortran | |
8389 | && parent->tag == DW_TAG_subprogram | |
8390 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8391 | { |
8392 | if (grandparent_scope == NULL) | |
7d00ffec | 8393 | parent->scope = parent->name (cu); |
72bf9492 | 8394 | else |
3e43a32a MS |
8395 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8396 | grandparent_scope, | |
7d00ffec | 8397 | parent->name (cu), 0, cu); |
72bf9492 | 8398 | } |
72bf9492 DJ |
8399 | else |
8400 | { | |
8401 | /* FIXME drow/2004-04-01: What should we be doing with | |
8402 | function-local names? For partial symbols, we should probably be | |
8403 | ignoring them. */ | |
fa9c3fa0 TT |
8404 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8405 | dwarf_tag_name (parent->tag), | |
8406 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8407 | parent->scope = grandparent_scope; |
c906108c SS |
8408 | } |
8409 | ||
72bf9492 DJ |
8410 | parent->scope_set = 1; |
8411 | return parent->scope; | |
8412 | } | |
8413 | ||
8414 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8415 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8416 | |
43816ebc | 8417 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8418 | partial_die_full_name (struct partial_die_info *pdi, |
8419 | struct dwarf2_cu *cu) | |
8420 | { | |
15d034d0 | 8421 | const char *parent_scope; |
72bf9492 | 8422 | |
98bfdba5 PA |
8423 | /* If this is a template instantiation, we can not work out the |
8424 | template arguments from partial DIEs. So, unfortunately, we have | |
8425 | to go through the full DIEs. At least any work we do building | |
8426 | types here will be reused if full symbols are loaded later. */ | |
8427 | if (pdi->has_template_arguments) | |
8428 | { | |
52356b79 | 8429 | pdi->fixup (cu); |
98bfdba5 | 8430 | |
7d00ffec | 8431 | if (pdi->name (cu) != NULL && strchr (pdi->name (cu), '<') == NULL) |
98bfdba5 PA |
8432 | { |
8433 | struct die_info *die; | |
8434 | struct attribute attr; | |
8435 | struct dwarf2_cu *ref_cu = cu; | |
8436 | ||
b64f50a1 | 8437 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8438 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8439 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8440 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8441 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8442 | ||
43816ebc | 8443 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8444 | } |
8445 | } | |
8446 | ||
72bf9492 DJ |
8447 | parent_scope = partial_die_parent_scope (pdi, cu); |
8448 | if (parent_scope == NULL) | |
8449 | return NULL; | |
8450 | else | |
43816ebc | 8451 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
7d00ffec TT |
8452 | pdi->name (cu), |
8453 | 0, cu)); | |
c906108c SS |
8454 | } |
8455 | ||
8456 | static void | |
72bf9492 | 8457 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8458 | { |
976ca316 SM |
8459 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
8460 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 8461 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8462 | CORE_ADDR addr = 0; |
15d034d0 | 8463 | const char *actual_name = NULL; |
e142c38c DJ |
8464 | CORE_ADDR baseaddr; |
8465 | ||
b3b3bada | 8466 | baseaddr = objfile->text_section_offset (); |
c906108c | 8467 | |
43816ebc TT |
8468 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8469 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8470 | if (built_actual_name != NULL) |
43816ebc | 8471 | actual_name = built_actual_name.get (); |
63d06c5c | 8472 | |
72bf9492 | 8473 | if (actual_name == NULL) |
7d00ffec | 8474 | actual_name = pdi->name (cu); |
72bf9492 | 8475 | |
76e288d1 TT |
8476 | partial_symbol psymbol; |
8477 | memset (&psymbol, 0, sizeof (psymbol)); | |
8478 | psymbol.ginfo.set_language (cu->language, &objfile->objfile_obstack); | |
8479 | psymbol.ginfo.section = -1; | |
8480 | ||
8481 | /* The code below indicates that the psymbol should be installed by | |
8482 | setting this. */ | |
8483 | gdb::optional<psymbol_placement> where; | |
8484 | ||
c906108c SS |
8485 | switch (pdi->tag) |
8486 | { | |
b1dc1806 | 8487 | case DW_TAG_inlined_subroutine: |
c906108c | 8488 | case DW_TAG_subprogram: |
79748972 TT |
8489 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8490 | - baseaddr); | |
0a4b0913 AB |
8491 | if (pdi->is_external |
8492 | || cu->language == language_ada | |
8493 | || (cu->language == language_fortran | |
8494 | && pdi->die_parent != NULL | |
8495 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8496 | { | |
8497 | /* Normally, only "external" DIEs are part of the global scope. | |
8498 | But in Ada and Fortran, we want to be able to access nested | |
8499 | procedures globally. So all Ada and Fortran subprograms are | |
8500 | stored in the global scope. */ | |
76e288d1 | 8501 | where = psymbol_placement::GLOBAL; |
c906108c SS |
8502 | } |
8503 | else | |
76e288d1 TT |
8504 | where = psymbol_placement::STATIC; |
8505 | ||
8506 | psymbol.domain = VAR_DOMAIN; | |
8507 | psymbol.aclass = LOC_BLOCK; | |
8508 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8509 | psymbol.ginfo.value.address = addr; | |
0c1b455e TT |
8510 | |
8511 | if (pdi->main_subprogram && actual_name != NULL) | |
8512 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8513 | break; |
72929c62 | 8514 | case DW_TAG_constant: |
76e288d1 TT |
8515 | psymbol.domain = VAR_DOMAIN; |
8516 | psymbol.aclass = LOC_STATIC; | |
8517 | where = (pdi->is_external | |
8518 | ? psymbol_placement::GLOBAL | |
8519 | : psymbol_placement::STATIC); | |
72929c62 | 8520 | break; |
c906108c | 8521 | case DW_TAG_variable: |
95554aad TT |
8522 | if (pdi->d.locdesc) |
8523 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8524 | |
95554aad | 8525 | if (pdi->d.locdesc |
caac4577 | 8526 | && addr == 0 |
976ca316 | 8527 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
8528 | { |
8529 | /* A global or static variable may also have been stripped | |
8530 | out by the linker if unused, in which case its address | |
8531 | will be nullified; do not add such variables into partial | |
8532 | symbol table then. */ | |
8533 | } | |
8534 | else if (pdi->is_external) | |
c906108c SS |
8535 | { |
8536 | /* Global Variable. | |
8537 | Don't enter into the minimal symbol tables as there is | |
8538 | a minimal symbol table entry from the ELF symbols already. | |
8539 | Enter into partial symbol table if it has a location | |
8540 | descriptor or a type. | |
8541 | If the location descriptor is missing, new_symbol will create | |
8542 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8543 | be determined from the minimal symbol table whenever the variable | |
8544 | is referenced. | |
8545 | The address for the partial symbol table entry is not | |
8546 | used by GDB, but it comes in handy for debugging partial symbol | |
8547 | table building. */ | |
8548 | ||
95554aad | 8549 | if (pdi->d.locdesc || pdi->has_type) |
76e288d1 TT |
8550 | { |
8551 | psymbol.domain = VAR_DOMAIN; | |
8552 | psymbol.aclass = LOC_STATIC; | |
8553 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8554 | psymbol.ginfo.value.address = addr; | |
8555 | where = psymbol_placement::GLOBAL; | |
8556 | } | |
c906108c SS |
8557 | } |
8558 | else | |
8559 | { | |
ff908ebf AW |
8560 | int has_loc = pdi->d.locdesc != NULL; |
8561 | ||
8562 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8563 | without location descriptors or constant values). */ | |
8564 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8565 | return; |
ff908ebf | 8566 | |
76e288d1 TT |
8567 | psymbol.domain = VAR_DOMAIN; |
8568 | psymbol.aclass = LOC_STATIC; | |
8569 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8570 | if (has_loc) | |
8571 | psymbol.ginfo.value.address = addr; | |
8572 | where = psymbol_placement::STATIC; | |
c906108c SS |
8573 | } |
8574 | break; | |
8575 | case DW_TAG_typedef: | |
8576 | case DW_TAG_base_type: | |
a02abb62 | 8577 | case DW_TAG_subrange_type: |
76e288d1 TT |
8578 | psymbol.domain = VAR_DOMAIN; |
8579 | psymbol.aclass = LOC_TYPEDEF; | |
8580 | where = psymbol_placement::STATIC; | |
c906108c | 8581 | break; |
74921315 | 8582 | case DW_TAG_imported_declaration: |
72bf9492 | 8583 | case DW_TAG_namespace: |
76e288d1 TT |
8584 | psymbol.domain = VAR_DOMAIN; |
8585 | psymbol.aclass = LOC_TYPEDEF; | |
8586 | where = psymbol_placement::GLOBAL; | |
72bf9492 | 8587 | break; |
530e8392 | 8588 | case DW_TAG_module: |
a5fd13a9 BH |
8589 | /* With Fortran 77 there might be a "BLOCK DATA" module |
8590 | available without any name. If so, we skip the module as it | |
8591 | doesn't bring any value. */ | |
8592 | if (actual_name != nullptr) | |
76e288d1 TT |
8593 | { |
8594 | psymbol.domain = MODULE_DOMAIN; | |
8595 | psymbol.aclass = LOC_TYPEDEF; | |
8596 | where = psymbol_placement::GLOBAL; | |
8597 | } | |
530e8392 | 8598 | break; |
c906108c | 8599 | case DW_TAG_class_type: |
680b30c7 | 8600 | case DW_TAG_interface_type: |
c906108c SS |
8601 | case DW_TAG_structure_type: |
8602 | case DW_TAG_union_type: | |
8603 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
8604 | /* Skip external references. The DWARF standard says in the section |
8605 | about "Structure, Union, and Class Type Entries": "An incomplete | |
8606 | structure, union or class type is represented by a structure, | |
8607 | union or class entry that does not have a byte size attribute | |
8608 | and that has a DW_AT_declaration attribute." */ | |
8609 | if (!pdi->has_byte_size && pdi->is_declaration) | |
43816ebc | 8610 | return; |
fa4028e9 | 8611 | |
63d06c5c DC |
8612 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8613 | static vs. global. */ | |
76e288d1 TT |
8614 | psymbol.domain = STRUCT_DOMAIN; |
8615 | psymbol.aclass = LOC_TYPEDEF; | |
8616 | where = (cu->language == language_cplus | |
8617 | ? psymbol_placement::GLOBAL | |
8618 | : psymbol_placement::STATIC); | |
c906108c SS |
8619 | break; |
8620 | case DW_TAG_enumerator: | |
76e288d1 TT |
8621 | psymbol.domain = VAR_DOMAIN; |
8622 | psymbol.aclass = LOC_CONST; | |
8623 | where = (cu->language == language_cplus | |
8624 | ? psymbol_placement::GLOBAL | |
8625 | : psymbol_placement::STATIC); | |
c906108c SS |
8626 | break; |
8627 | default: | |
8628 | break; | |
8629 | } | |
76e288d1 TT |
8630 | |
8631 | if (where.has_value ()) | |
8632 | { | |
f049a313 TT |
8633 | if (built_actual_name != nullptr) |
8634 | actual_name = objfile->intern (actual_name); | |
bcfe6157 TT |
8635 | if (pdi->linkage_name == nullptr || cu->language == language_ada) |
8636 | psymbol.ginfo.set_linkage_name (actual_name); | |
8637 | else | |
8638 | { | |
8639 | psymbol.ginfo.set_demangled_name (actual_name, | |
8640 | &objfile->objfile_obstack); | |
8641 | psymbol.ginfo.set_linkage_name (pdi->linkage_name); | |
8642 | } | |
76e288d1 TT |
8643 | add_psymbol_to_list (psymbol, *where, objfile); |
8644 | } | |
c906108c SS |
8645 | } |
8646 | ||
5c4e30ca DC |
8647 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8648 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8649 | the name of the enclosing namespace. */ | |
91c24f0a | 8650 | |
72bf9492 DJ |
8651 | static void |
8652 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8653 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8654 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8655 | { |
72bf9492 | 8656 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8657 | |
72bf9492 | 8658 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8659 | |
8660 | /* Now scan partial symbols in that namespace. */ | |
8661 | ||
91c24f0a | 8662 | if (pdi->has_children) |
cdc07690 | 8663 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8664 | } |
8665 | ||
5d7cb8df JK |
8666 | /* Read a partial die corresponding to a Fortran module. */ |
8667 | ||
8668 | static void | |
8669 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8670 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8671 | { |
530e8392 KB |
8672 | /* Add a symbol for the namespace. */ |
8673 | ||
8674 | add_partial_symbol (pdi, cu); | |
8675 | ||
f55ee35c | 8676 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8677 | |
8678 | if (pdi->has_children) | |
cdc07690 | 8679 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8680 | } |
8681 | ||
b1dc1806 XR |
8682 | /* Read a partial die corresponding to a subprogram or an inlined |
8683 | subprogram and create a partial symbol for that subprogram. | |
8684 | When the CU language allows it, this routine also defines a partial | |
8685 | symbol for each nested subprogram that this subprogram contains. | |
8686 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8687 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8688 | |
cdc07690 YQ |
8689 | PDI may also be a lexical block, in which case we simply search |
8690 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8691 | Again, this is only performed when the CU language allows this |
8692 | type of definitions. */ | |
8693 | ||
8694 | static void | |
8695 | add_partial_subprogram (struct partial_die_info *pdi, | |
8696 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8697 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8698 | { |
b1dc1806 | 8699 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8700 | { |
8701 | if (pdi->has_pc_info) | |
8702 | { | |
8703 | if (pdi->lowpc < *lowpc) | |
8704 | *lowpc = pdi->lowpc; | |
8705 | if (pdi->highpc > *highpc) | |
8706 | *highpc = pdi->highpc; | |
cdc07690 | 8707 | if (set_addrmap) |
5734ee8b | 8708 | { |
5e22e966 | 8709 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 8710 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8711 | CORE_ADDR baseaddr; |
b926417a TT |
8712 | CORE_ADDR this_highpc; |
8713 | CORE_ADDR this_lowpc; | |
5734ee8b | 8714 | |
b3b3bada | 8715 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8716 | this_lowpc |
8717 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8718 | pdi->lowpc + baseaddr) | |
8719 | - baseaddr); | |
8720 | this_highpc | |
8721 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8722 | pdi->highpc + baseaddr) | |
8723 | - baseaddr); | |
d320c2b5 | 8724 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8725 | this_lowpc, this_highpc - 1, |
9291a0cd | 8726 | cu->per_cu->v.psymtab); |
5734ee8b | 8727 | } |
481860b3 GB |
8728 | } |
8729 | ||
8730 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8731 | { | |
bc30ff58 | 8732 | if (!pdi->is_declaration) |
e8d05480 JB |
8733 | /* Ignore subprogram DIEs that do not have a name, they are |
8734 | illegal. Do not emit a complaint at this point, we will | |
8735 | do so when we convert this psymtab into a symtab. */ | |
7d00ffec | 8736 | if (pdi->name (cu)) |
e8d05480 | 8737 | add_partial_symbol (pdi, cu); |
bc30ff58 JB |
8738 | } |
8739 | } | |
6e70227d | 8740 | |
bc30ff58 JB |
8741 | if (! pdi->has_children) |
8742 | return; | |
8743 | ||
0a4b0913 | 8744 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8745 | { |
8746 | pdi = pdi->die_child; | |
8747 | while (pdi != NULL) | |
8748 | { | |
52356b79 | 8749 | pdi->fixup (cu); |
bc30ff58 | 8750 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8751 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8752 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8753 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8754 | pdi = pdi->die_sibling; |
8755 | } | |
8756 | } | |
8757 | } | |
8758 | ||
91c24f0a DC |
8759 | /* Read a partial die corresponding to an enumeration type. */ |
8760 | ||
72bf9492 DJ |
8761 | static void |
8762 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8763 | struct dwarf2_cu *cu) | |
91c24f0a | 8764 | { |
72bf9492 | 8765 | struct partial_die_info *pdi; |
91c24f0a | 8766 | |
7d00ffec | 8767 | if (enum_pdi->name (cu) != NULL) |
72bf9492 DJ |
8768 | add_partial_symbol (enum_pdi, cu); |
8769 | ||
8770 | pdi = enum_pdi->die_child; | |
8771 | while (pdi) | |
91c24f0a | 8772 | { |
7d00ffec | 8773 | if (pdi->tag != DW_TAG_enumerator || pdi->raw_name == NULL) |
b98664d3 | 8774 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8775 | else |
72bf9492 DJ |
8776 | add_partial_symbol (pdi, cu); |
8777 | pdi = pdi->die_sibling; | |
91c24f0a | 8778 | } |
91c24f0a DC |
8779 | } |
8780 | ||
6caca83c CC |
8781 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8782 | ||
8783 | static unsigned int | |
d521ce57 | 8784 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8785 | { |
8786 | unsigned int bytes_read; | |
8787 | ||
8788 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8789 | } | |
8790 | ||
685af9cd TT |
8791 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8792 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8793 | ||
4bb7a0a7 DJ |
8794 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8795 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8796 | the initial number. */ | |
8797 | ||
8798 | static struct abbrev_info * | |
685af9cd TT |
8799 | peek_die_abbrev (const die_reader_specs &reader, |
8800 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8801 | { |
685af9cd | 8802 | dwarf2_cu *cu = reader.cu; |
5e22e966 | 8803 | bfd *abfd = cu->per_objfile->objfile->obfd; |
685af9cd TT |
8804 | unsigned int abbrev_number |
8805 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8806 | |
8807 | if (abbrev_number == 0) | |
8808 | return NULL; | |
8809 | ||
685af9cd | 8810 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8811 | if (!abbrev) |
8812 | { | |
422b9917 | 8813 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8814 | " at offset %s [in module %s]"), |
422b9917 | 8815 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8816 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8817 | } |
8818 | ||
8819 | return abbrev; | |
8820 | } | |
8821 | ||
93311388 DE |
8822 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8823 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8824 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8825 | ||
d521ce57 TT |
8826 | static const gdb_byte * |
8827 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8828 | { |
4bb7a0a7 DJ |
8829 | while (1) |
8830 | { | |
685af9cd TT |
8831 | unsigned int bytes_read; |
8832 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8833 | ||
4bb7a0a7 DJ |
8834 | if (abbrev == NULL) |
8835 | return info_ptr + bytes_read; | |
8836 | else | |
dee91e82 | 8837 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8838 | } |
8839 | } | |
8840 | ||
93311388 DE |
8841 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8842 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8843 | abbrev corresponding to that skipped uleb128 should be passed in |
8844 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8845 | children. */ | |
8846 | ||
d521ce57 TT |
8847 | static const gdb_byte * |
8848 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8849 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8850 | { |
8851 | unsigned int bytes_read; | |
8852 | struct attribute attr; | |
dee91e82 DE |
8853 | bfd *abfd = reader->abfd; |
8854 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8855 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8856 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8857 | unsigned int form, i; |
8858 | ||
8859 | for (i = 0; i < abbrev->num_attrs; i++) | |
8860 | { | |
8861 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8862 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8863 | { | |
7a5f294d | 8864 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 8865 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8866 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8867 | else |
b9502d3f | 8868 | { |
0826b30a | 8869 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8870 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8871 | |
8872 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8873 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8874 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8875 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8876 | else |
8877 | return sibling_ptr; | |
8878 | } | |
4bb7a0a7 DJ |
8879 | } |
8880 | ||
8881 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8882 | form = abbrev->attrs[i].form; | |
8883 | skip_attribute: | |
8884 | switch (form) | |
8885 | { | |
4bb7a0a7 | 8886 | case DW_FORM_ref_addr: |
ae411497 TT |
8887 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8888 | and later it is offset sized. */ | |
8889 | if (cu->header.version == 2) | |
8890 | info_ptr += cu->header.addr_size; | |
8891 | else | |
8892 | info_ptr += cu->header.offset_size; | |
8893 | break; | |
36586728 TT |
8894 | case DW_FORM_GNU_ref_alt: |
8895 | info_ptr += cu->header.offset_size; | |
8896 | break; | |
ae411497 | 8897 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8898 | info_ptr += cu->header.addr_size; |
8899 | break; | |
8900 | case DW_FORM_data1: | |
8901 | case DW_FORM_ref1: | |
8902 | case DW_FORM_flag: | |
8fe0f950 | 8903 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8904 | info_ptr += 1; |
8905 | break; | |
2dc7f7b3 | 8906 | case DW_FORM_flag_present: |
43988095 | 8907 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8908 | break; |
4bb7a0a7 DJ |
8909 | case DW_FORM_data2: |
8910 | case DW_FORM_ref2: | |
8fe0f950 | 8911 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8912 | info_ptr += 2; |
8913 | break; | |
8fe0f950 AT |
8914 | case DW_FORM_strx3: |
8915 | info_ptr += 3; | |
8916 | break; | |
4bb7a0a7 DJ |
8917 | case DW_FORM_data4: |
8918 | case DW_FORM_ref4: | |
8fe0f950 | 8919 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8920 | info_ptr += 4; |
8921 | break; | |
8922 | case DW_FORM_data8: | |
8923 | case DW_FORM_ref8: | |
55f1336d | 8924 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8925 | info_ptr += 8; |
8926 | break; | |
0224619f JK |
8927 | case DW_FORM_data16: |
8928 | info_ptr += 16; | |
8929 | break; | |
4bb7a0a7 | 8930 | case DW_FORM_string: |
9b1c24c8 | 8931 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8932 | info_ptr += bytes_read; |
8933 | break; | |
2dc7f7b3 | 8934 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8935 | case DW_FORM_strp: |
36586728 | 8936 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8937 | info_ptr += cu->header.offset_size; |
8938 | break; | |
2dc7f7b3 | 8939 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8940 | case DW_FORM_block: |
8941 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8942 | info_ptr += bytes_read; | |
8943 | break; | |
8944 | case DW_FORM_block1: | |
8945 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8946 | break; | |
8947 | case DW_FORM_block2: | |
8948 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8949 | break; | |
8950 | case DW_FORM_block4: | |
8951 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8952 | break; | |
336d760d | 8953 | case DW_FORM_addrx: |
cf532bd1 | 8954 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8955 | case DW_FORM_sdata: |
8956 | case DW_FORM_udata: | |
8957 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8958 | case DW_FORM_GNU_addr_index: |
8959 | case DW_FORM_GNU_str_index: | |
18a8505e | 8960 | case DW_FORM_rnglistx: |
41144253 | 8961 | case DW_FORM_loclistx: |
d521ce57 | 8962 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8963 | break; |
8964 | case DW_FORM_indirect: | |
8965 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8966 | info_ptr += bytes_read; | |
8967 | /* We need to continue parsing from here, so just go back to | |
8968 | the top. */ | |
8969 | goto skip_attribute; | |
8970 | ||
8971 | default: | |
3e43a32a MS |
8972 | error (_("Dwarf Error: Cannot handle %s " |
8973 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8974 | dwarf_form_name (form), |
8975 | bfd_get_filename (abfd)); | |
8976 | } | |
8977 | } | |
8978 | ||
8979 | if (abbrev->has_children) | |
dee91e82 | 8980 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
8981 | else |
8982 | return info_ptr; | |
8983 | } | |
8984 | ||
93311388 | 8985 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 8986 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 8987 | |
d521ce57 | 8988 | static const gdb_byte * |
dee91e82 DE |
8989 | locate_pdi_sibling (const struct die_reader_specs *reader, |
8990 | struct partial_die_info *orig_pdi, | |
d521ce57 | 8991 | const gdb_byte *info_ptr) |
91c24f0a DC |
8992 | { |
8993 | /* Do we know the sibling already? */ | |
72bf9492 | 8994 | |
91c24f0a DC |
8995 | if (orig_pdi->sibling) |
8996 | return orig_pdi->sibling; | |
8997 | ||
8998 | /* Are there any children to deal with? */ | |
8999 | ||
9000 | if (!orig_pdi->has_children) | |
9001 | return info_ptr; | |
9002 | ||
4bb7a0a7 | 9003 | /* Skip the children the long way. */ |
91c24f0a | 9004 | |
dee91e82 | 9005 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9006 | } |
9007 | ||
257e7a09 | 9008 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9009 | not NULL. */ |
c906108c | 9010 | |
891813be TT |
9011 | void |
9012 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 9013 | { |
976ca316 | 9014 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 9015 | |
976ca316 | 9016 | gdb_assert (!per_objfile->symtab_set_p (per_cu_data)); |
af758d11 | 9017 | |
077cbab2 TT |
9018 | /* If this psymtab is constructed from a debug-only objfile, the |
9019 | has_section_at_zero flag will not necessarily be correct. We | |
9020 | can get the correct value for this flag by looking at the data | |
9021 | associated with the (presumably stripped) associated objfile. */ | |
9022 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 9023 | { |
976ca316 | 9024 | dwarf2_per_objfile *per_objfile_backlink |
077cbab2 | 9025 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
c906108c | 9026 | |
976ca316 SM |
9027 | per_objfile->per_bfd->has_section_at_zero |
9028 | = per_objfile_backlink->per_bfd->has_section_at_zero; | |
077cbab2 | 9029 | } |
98bfdba5 | 9030 | |
8566b89b | 9031 | expand_psymtab (objfile); |
95554aad | 9032 | |
976ca316 | 9033 | process_cu_includes (per_objfile); |
c906108c | 9034 | } |
9cdd5dbd DE |
9035 | \f |
9036 | /* Reading in full CUs. */ | |
c906108c | 9037 | |
10b3939b DJ |
9038 | /* Add PER_CU to the queue. */ |
9039 | ||
9040 | static void | |
120ce1b5 SM |
9041 | queue_comp_unit (dwarf2_per_cu_data *per_cu, |
9042 | dwarf2_per_objfile *per_objfile, | |
95554aad | 9043 | enum language pretend_language) |
10b3939b | 9044 | { |
10b3939b | 9045 | per_cu->queued = 1; |
120ce1b5 | 9046 | per_cu->per_bfd->queue.emplace (per_cu, per_objfile, pretend_language); |
10b3939b DJ |
9047 | } |
9048 | ||
89e63ee4 DE |
9049 | /* If PER_CU is not yet queued, add it to the queue. |
9050 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9051 | dependency. | |
0907af0c | 9052 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9053 | meaning either PER_CU is already queued or it is already loaded. |
9054 | ||
9055 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9056 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9057 | |
9058 | static int | |
89e63ee4 | 9059 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
120ce1b5 SM |
9060 | dwarf2_per_cu_data *per_cu, |
9061 | dwarf2_per_objfile *per_objfile, | |
0907af0c DE |
9062 | enum language pretend_language) |
9063 | { | |
9064 | /* We may arrive here during partial symbol reading, if we need full | |
9065 | DIEs to process an unusual case (e.g. template arguments). Do | |
9066 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
1859c670 | 9067 | if (per_cu->per_bfd->reading_partial_symbols) |
0907af0c | 9068 | { |
7188ed02 SM |
9069 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9070 | ||
9071 | if (cu == NULL || cu->dies == NULL) | |
0907af0c DE |
9072 | return 1; |
9073 | return 0; | |
9074 | } | |
9075 | ||
9076 | /* Mark the dependence relation so that we don't flush PER_CU | |
9077 | too early. */ | |
89e63ee4 DE |
9078 | if (dependent_cu != NULL) |
9079 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9080 | |
9081 | /* If it's already on the queue, we have nothing to do. */ | |
9082 | if (per_cu->queued) | |
9083 | return 0; | |
9084 | ||
9085 | /* If the compilation unit is already loaded, just mark it as | |
9086 | used. */ | |
7188ed02 SM |
9087 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9088 | if (cu != nullptr) | |
0907af0c | 9089 | { |
7188ed02 | 9090 | cu->last_used = 0; |
0907af0c DE |
9091 | return 0; |
9092 | } | |
9093 | ||
9094 | /* Add it to the queue. */ | |
120ce1b5 | 9095 | queue_comp_unit (per_cu, per_objfile, pretend_language); |
0907af0c DE |
9096 | |
9097 | return 1; | |
9098 | } | |
9099 | ||
10b3939b DJ |
9100 | /* Process the queue. */ |
9101 | ||
9102 | static void | |
976ca316 | 9103 | process_queue (dwarf2_per_objfile *per_objfile) |
10b3939b | 9104 | { |
b4f54984 | 9105 | if (dwarf_read_debug) |
45cfd468 DE |
9106 | { |
9107 | fprintf_unfiltered (gdb_stdlog, | |
9108 | "Expanding one or more symtabs of objfile %s ...\n", | |
976ca316 | 9109 | objfile_name (per_objfile->objfile)); |
45cfd468 DE |
9110 | } |
9111 | ||
03dd20cc DJ |
9112 | /* The queue starts out with one item, but following a DIE reference |
9113 | may load a new CU, adding it to the end of the queue. */ | |
976ca316 | 9114 | while (!per_objfile->per_bfd->queue.empty ()) |
10b3939b | 9115 | { |
976ca316 | 9116 | dwarf2_queue_item &item = per_objfile->per_bfd->queue.front (); |
7188ed02 | 9117 | dwarf2_per_cu_data *per_cu = item.per_cu; |
39856def | 9118 | |
976ca316 | 9119 | if (!per_objfile->symtab_set_p (per_cu)) |
f4dc4d17 | 9120 | { |
976ca316 | 9121 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
f4dc4d17 | 9122 | |
7188ed02 SM |
9123 | /* Skip dummy CUs. */ |
9124 | if (cu != nullptr) | |
73be47f5 | 9125 | { |
7188ed02 SM |
9126 | unsigned int debug_print_threshold; |
9127 | char buf[100]; | |
9128 | ||
9129 | if (per_cu->is_debug_types) | |
9130 | { | |
9131 | struct signatured_type *sig_type = | |
9132 | (struct signatured_type *) per_cu; | |
9133 | ||
9134 | sprintf (buf, "TU %s at offset %s", | |
9135 | hex_string (sig_type->signature), | |
9136 | sect_offset_str (per_cu->sect_off)); | |
9137 | /* There can be 100s of TUs. | |
9138 | Only print them in verbose mode. */ | |
9139 | debug_print_threshold = 2; | |
9140 | } | |
9141 | else | |
9142 | { | |
9143 | sprintf (buf, "CU at offset %s", | |
9144 | sect_offset_str (per_cu->sect_off)); | |
9145 | debug_print_threshold = 1; | |
9146 | } | |
247f5c4f | 9147 | |
7188ed02 SM |
9148 | if (dwarf_read_debug >= debug_print_threshold) |
9149 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); | |
f4dc4d17 | 9150 | |
7188ed02 SM |
9151 | if (per_cu->is_debug_types) |
9152 | process_full_type_unit (cu, item.pretend_language); | |
9153 | else | |
9154 | process_full_comp_unit (cu, item.pretend_language); | |
f4dc4d17 | 9155 | |
7188ed02 SM |
9156 | if (dwarf_read_debug >= debug_print_threshold) |
9157 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); | |
9158 | } | |
f4dc4d17 | 9159 | } |
10b3939b | 9160 | |
7188ed02 | 9161 | per_cu->queued = 0; |
976ca316 | 9162 | per_objfile->per_bfd->queue.pop (); |
10b3939b DJ |
9163 | } |
9164 | ||
b4f54984 | 9165 | if (dwarf_read_debug) |
45cfd468 DE |
9166 | { |
9167 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
976ca316 | 9168 | objfile_name (per_objfile->objfile)); |
45cfd468 | 9169 | } |
10b3939b DJ |
9170 | } |
9171 | ||
10b3939b DJ |
9172 | /* Read in full symbols for PST, and anything it depends on. */ |
9173 | ||
8566b89b TT |
9174 | void |
9175 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9176 | { |
af758d11 | 9177 | gdb_assert (!readin_p (objfile)); |
95554aad | 9178 | |
17ee85fc TT |
9179 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9180 | free_cached_comp_units freer (per_objfile); | |
48993951 | 9181 | expand_dependencies (objfile); |
aaa75496 | 9182 | |
97a1449a | 9183 | dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); |
5717c425 | 9184 | gdb_assert (get_compunit_symtab (objfile) != nullptr); |
10b3939b DJ |
9185 | } |
9186 | ||
af758d11 SM |
9187 | /* See psympriv.h. */ |
9188 | ||
9189 | bool | |
9190 | dwarf2_psymtab::readin_p (struct objfile *objfile) const | |
9191 | { | |
9192 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9193 | return per_objfile->symtab_set_p (per_cu_data); | |
9194 | } | |
9195 | ||
9196 | /* See psympriv.h. */ | |
9197 | ||
9198 | compunit_symtab * | |
9199 | dwarf2_psymtab::get_compunit_symtab (struct objfile *objfile) const | |
9200 | { | |
9201 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9202 | return per_objfile->get_symtab (per_cu_data); | |
9203 | } | |
9204 | ||
dee91e82 DE |
9205 | /* Trivial hash function for die_info: the hash value of a DIE |
9206 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9207 | |
dee91e82 DE |
9208 | static hashval_t |
9209 | die_hash (const void *item) | |
10b3939b | 9210 | { |
9a3c8263 | 9211 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9212 | |
9c541725 | 9213 | return to_underlying (die->sect_off); |
dee91e82 | 9214 | } |
63d06c5c | 9215 | |
dee91e82 DE |
9216 | /* Trivial comparison function for die_info structures: two DIEs |
9217 | are equal if they have the same offset. */ | |
98bfdba5 | 9218 | |
dee91e82 DE |
9219 | static int |
9220 | die_eq (const void *item_lhs, const void *item_rhs) | |
9221 | { | |
9a3c8263 SM |
9222 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9223 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9224 | |
9c541725 | 9225 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9226 | } |
c906108c | 9227 | |
c0ab21c2 | 9228 | /* Load the DIEs associated with PER_CU into memory. */ |
c906108c | 9229 | |
dee91e82 | 9230 | static void |
ab432490 SM |
9231 | load_full_comp_unit (dwarf2_per_cu_data *this_cu, |
9232 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 TT |
9233 | bool skip_partial, |
9234 | enum language pretend_language) | |
dee91e82 | 9235 | { |
c0ab21c2 TT |
9236 | gdb_assert (! this_cu->is_debug_types); |
9237 | ||
7188ed02 SM |
9238 | dwarf2_cu *existing_cu = per_objfile->get_cu (this_cu); |
9239 | cutu_reader reader (this_cu, per_objfile, NULL, existing_cu, skip_partial); | |
c0ab21c2 TT |
9240 | if (reader.dummy_p) |
9241 | return; | |
9242 | ||
9243 | struct dwarf2_cu *cu = reader.cu; | |
9244 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9245 | |
dee91e82 DE |
9246 | gdb_assert (cu->die_hash == NULL); |
9247 | cu->die_hash = | |
9248 | htab_create_alloc_ex (cu->header.length / 12, | |
9249 | die_hash, | |
9250 | die_eq, | |
9251 | NULL, | |
9252 | &cu->comp_unit_obstack, | |
9253 | hashtab_obstack_allocate, | |
9254 | dummy_obstack_deallocate); | |
e142c38c | 9255 | |
3e225074 | 9256 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
9257 | reader.comp_unit_die->child |
9258 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9259 | &info_ptr, reader.comp_unit_die); | |
9260 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9261 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9262 | |
9263 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9264 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9265 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9266 | or we won't be able to build types correctly. |
9267 | Similarly, if we do not read the producer, we can not apply | |
9268 | producer-specific interpretation. */ | |
c0ab21c2 | 9269 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
9270 | |
9271 | reader.keep (); | |
10b3939b DJ |
9272 | } |
9273 | ||
3da10d80 KS |
9274 | /* Add a DIE to the delayed physname list. */ |
9275 | ||
9276 | static void | |
9277 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9278 | const char *name, struct die_info *die, | |
9279 | struct dwarf2_cu *cu) | |
9280 | { | |
9281 | struct delayed_method_info mi; | |
9282 | mi.type = type; | |
9283 | mi.fnfield_index = fnfield_index; | |
9284 | mi.index = index; | |
9285 | mi.name = name; | |
9286 | mi.die = die; | |
c89b44cd | 9287 | cu->method_list.push_back (mi); |
3da10d80 KS |
9288 | } |
9289 | ||
3693fdb3 PA |
9290 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9291 | "const" / "volatile". If so, decrements LEN by the length of the | |
9292 | modifier and return true. Otherwise return false. */ | |
9293 | ||
9294 | template<size_t N> | |
9295 | static bool | |
9296 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9297 | { | |
9298 | size_t mod_len = sizeof (mod) - 1; | |
9299 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9300 | { | |
9301 | len -= mod_len; | |
9302 | return true; | |
9303 | } | |
9304 | return false; | |
9305 | } | |
9306 | ||
3da10d80 KS |
9307 | /* Compute the physnames of any methods on the CU's method list. |
9308 | ||
9309 | The computation of method physnames is delayed in order to avoid the | |
9310 | (bad) condition that one of the method's formal parameters is of an as yet | |
9311 | incomplete type. */ | |
9312 | ||
9313 | static void | |
9314 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9315 | { | |
3693fdb3 | 9316 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9317 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9318 | return; |
9319 | gdb_assert (cu->language == language_cplus); | |
9320 | ||
52941706 | 9321 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9322 | { |
1d06ead6 | 9323 | const char *physname; |
3da10d80 | 9324 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9325 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9326 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9327 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9328 | = physname ? physname : ""; |
3693fdb3 PA |
9329 | |
9330 | /* Since there's no tag to indicate whether a method is a | |
9331 | const/volatile overload, extract that information out of the | |
9332 | demangled name. */ | |
9333 | if (physname != NULL) | |
9334 | { | |
9335 | size_t len = strlen (physname); | |
9336 | ||
9337 | while (1) | |
9338 | { | |
9339 | if (physname[len] == ')') /* shortcut */ | |
9340 | break; | |
9341 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9342 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9343 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9344 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9345 | else |
9346 | break; | |
9347 | } | |
9348 | } | |
3da10d80 | 9349 | } |
c89b44cd TT |
9350 | |
9351 | /* The list is no longer needed. */ | |
9352 | cu->method_list.clear (); | |
3da10d80 KS |
9353 | } |
9354 | ||
a766d390 DE |
9355 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9356 | and it's not clear if/how imported objects will appear. | |
9357 | To keep Go support simple until that's worked out, | |
9358 | go back through what we've read and create something usable. | |
9359 | We could do this while processing each DIE, and feels kinda cleaner, | |
9360 | but that way is more invasive. | |
9361 | This is to, for example, allow the user to type "p var" or "b main" | |
9362 | without having to specify the package name, and allow lookups | |
9363 | of module.object to work in contexts that use the expression | |
9364 | parser. */ | |
9365 | ||
9366 | static void | |
9367 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9368 | { | |
421d1616 | 9369 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9370 | struct pending *list; |
9371 | int i; | |
9372 | ||
c24bdb02 | 9373 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9374 | list != NULL; |
9375 | list = list->next) | |
a766d390 DE |
9376 | { |
9377 | for (i = 0; i < list->nsyms; ++i) | |
9378 | { | |
9379 | struct symbol *sym = list->symbol[i]; | |
9380 | ||
c1b5c1eb | 9381 | if (sym->language () == language_go |
a766d390 DE |
9382 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9383 | { | |
421d1616 TT |
9384 | gdb::unique_xmalloc_ptr<char> this_package_name |
9385 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9386 | |
9387 | if (this_package_name == NULL) | |
9388 | continue; | |
9389 | if (package_name == NULL) | |
421d1616 | 9390 | package_name = std::move (this_package_name); |
a766d390 DE |
9391 | else |
9392 | { | |
5e22e966 | 9393 | struct objfile *objfile = cu->per_objfile->objfile; |
421d1616 | 9394 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9395 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9396 | (symbol_symtab (sym) != NULL |
9397 | ? symtab_to_filename_for_display | |
9398 | (symbol_symtab (sym)) | |
e3b94546 | 9399 | : objfile_name (objfile)), |
421d1616 | 9400 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9401 | } |
9402 | } | |
9403 | } | |
9404 | } | |
9405 | ||
9406 | if (package_name != NULL) | |
9407 | { | |
5e22e966 | 9408 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 9409 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9410 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9411 | saved_package_name); | |
a766d390 DE |
9412 | struct symbol *sym; |
9413 | ||
8c14c3a3 | 9414 | sym = new (&objfile->objfile_obstack) symbol; |
d3ecddab | 9415 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9416 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9417 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9418 | e.g., "main" finds the "main" module and not C's main(). */ | |
9419 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9420 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9421 | SYMBOL_TYPE (sym) = type; |
9422 | ||
c24bdb02 | 9423 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9424 | } |
9425 | } | |
9426 | ||
c9317f21 TT |
9427 | /* Allocate a fully-qualified name consisting of the two parts on the |
9428 | obstack. */ | |
9429 | ||
9430 | static const char * | |
9431 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9432 | { | |
9433 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9434 | } | |
9435 | ||
9c6a1327 TT |
9436 | /* A helper that allocates a variant part to attach to a Rust enum |
9437 | type. OBSTACK is where the results should be allocated. TYPE is | |
9438 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
57d02173 TT |
9439 | discriminant. It must be the index of one of the fields of TYPE, |
9440 | or -1 to mean there is no discriminant (univariant enum). | |
9c6a1327 TT |
9441 | DEFAULT_INDEX is the index of the default field; or -1 if there is |
9442 | no default. RANGES is indexed by "effective" field number (the | |
9443 | field index, but omitting the discriminant and default fields) and | |
9444 | must hold the discriminant values used by the variants. Note that | |
9445 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9446 | already allocated on it, or static. */ | |
c9317f21 | 9447 | |
9c6a1327 TT |
9448 | static void |
9449 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9450 | int discriminant_index, int default_index, | |
9451 | gdb::array_view<discriminant_range> ranges) | |
9452 | { | |
57d02173 TT |
9453 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. */ |
9454 | gdb_assert (discriminant_index == -1 | |
9455 | || (discriminant_index >= 0 | |
9456 | && discriminant_index < type->num_fields ())); | |
c9317f21 | 9457 | gdb_assert (default_index == -1 |
1f704f76 | 9458 | || (default_index >= 0 && default_index < type->num_fields ())); |
c9317f21 | 9459 | |
9c6a1327 | 9460 | /* We have one variant for each non-discriminant field. */ |
57d02173 TT |
9461 | int n_variants = type->num_fields (); |
9462 | if (discriminant_index != -1) | |
9463 | --n_variants; | |
c9317f21 | 9464 | |
9c6a1327 TT |
9465 | variant *variants = new (obstack) variant[n_variants]; |
9466 | int var_idx = 0; | |
9467 | int range_idx = 0; | |
1f704f76 | 9468 | for (int i = 0; i < type->num_fields (); ++i) |
9c6a1327 TT |
9469 | { |
9470 | if (i == discriminant_index) | |
9471 | continue; | |
c9317f21 | 9472 | |
9c6a1327 TT |
9473 | variants[var_idx].first_field = i; |
9474 | variants[var_idx].last_field = i + 1; | |
9475 | ||
9476 | /* The default field does not need a range, but other fields do. | |
9477 | We skipped the discriminant above. */ | |
9478 | if (i != default_index) | |
9479 | { | |
9480 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9481 | ++range_idx; | |
9482 | } | |
c9317f21 | 9483 | |
9c6a1327 TT |
9484 | ++var_idx; |
9485 | } | |
9486 | ||
9487 | gdb_assert (range_idx == ranges.size ()); | |
9488 | gdb_assert (var_idx == n_variants); | |
9489 | ||
9490 | variant_part *part = new (obstack) variant_part; | |
9491 | part->discriminant_index = discriminant_index; | |
57d02173 TT |
9492 | /* If there is no discriminant, then whether it is signed is of no |
9493 | consequence. */ | |
9494 | part->is_unsigned | |
9495 | = (discriminant_index == -1 | |
9496 | ? false | |
c6d940a9 | 9497 | : type->field (discriminant_index).type ()->is_unsigned ()); |
9c6a1327 TT |
9498 | part->variants = gdb::array_view<variant> (variants, n_variants); |
9499 | ||
9500 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9501 | gdb::array_view<variant_part> *prop_value | |
9502 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9503 | |
9c6a1327 | 9504 | struct dynamic_prop prop; |
8c2e4e06 | 9505 | prop.set_variant_parts (prop_value); |
9c6a1327 | 9506 | |
5c54719c | 9507 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
c9317f21 TT |
9508 | } |
9509 | ||
9510 | /* Some versions of rustc emitted enums in an unusual way. | |
9511 | ||
9512 | Ordinary enums were emitted as unions. The first element of each | |
9513 | structure in the union was named "RUST$ENUM$DISR". This element | |
9514 | held the discriminant. | |
9515 | ||
9516 | These versions of Rust also implemented the "non-zero" | |
9517 | optimization. When the enum had two values, and one is empty and | |
9518 | the other holds a pointer that cannot be zero, the pointer is used | |
9519 | as the discriminant, with a zero value meaning the empty variant. | |
9520 | Here, the union's first member is of the form | |
9521 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9522 | where the fieldnos are the indices of the fields that should be | |
9523 | traversed in order to find the field (which may be several fields deep) | |
9524 | and the variantname is the name of the variant of the case when the | |
9525 | field is zero. | |
9526 | ||
9527 | This function recognizes whether TYPE is of one of these forms, | |
9528 | and, if so, smashes it to be a variant type. */ | |
9529 | ||
9530 | static void | |
9531 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9532 | { | |
78134374 | 9533 | gdb_assert (type->code () == TYPE_CODE_UNION); |
c9317f21 TT |
9534 | |
9535 | /* We don't need to deal with empty enums. */ | |
1f704f76 | 9536 | if (type->num_fields () == 0) |
c9317f21 TT |
9537 | return; |
9538 | ||
9539 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
1f704f76 | 9540 | if (type->num_fields () == 1 |
c9317f21 TT |
9541 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) |
9542 | { | |
9543 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9544 | ||
9545 | /* Decode the field name to find the offset of the | |
9546 | discriminant. */ | |
9547 | ULONGEST bit_offset = 0; | |
940da03e | 9548 | struct type *field_type = type->field (0).type (); |
c9317f21 TT |
9549 | while (name[0] >= '0' && name[0] <= '9') |
9550 | { | |
9551 | char *tail; | |
9552 | unsigned long index = strtoul (name, &tail, 10); | |
9553 | name = tail; | |
9554 | if (*name != '$' | |
1f704f76 | 9555 | || index >= field_type->num_fields () |
c9317f21 TT |
9556 | || (TYPE_FIELD_LOC_KIND (field_type, index) |
9557 | != FIELD_LOC_KIND_BITPOS)) | |
9558 | { | |
b98664d3 | 9559 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9560 | "[in module %s]"), |
9561 | TYPE_FIELD_NAME (type, 0), | |
9562 | objfile_name (objfile)); | |
9563 | return; | |
9564 | } | |
9565 | ++name; | |
9566 | ||
9567 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
940da03e | 9568 | field_type = field_type->field (index).type (); |
c9317f21 TT |
9569 | } |
9570 | ||
9c6a1327 TT |
9571 | /* Smash this type to be a structure type. We have to do this |
9572 | because the type has already been recorded. */ | |
67607e24 | 9573 | type->set_code (TYPE_CODE_STRUCT); |
5e33d5f4 | 9574 | type->set_num_fields (3); |
9c6a1327 | 9575 | /* Save the field we care about. */ |
ceacbf6e | 9576 | struct field saved_field = type->field (0); |
3cabb6b0 SM |
9577 | type->set_fields |
9578 | ((struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field))); | |
c9317f21 | 9579 | |
9c6a1327 | 9580 | /* Put the discriminant at index 0. */ |
5d14b6e5 | 9581 | type->field (0).set_type (field_type); |
9c6a1327 TT |
9582 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9583 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
ceacbf6e | 9584 | SET_FIELD_BITPOS (type->field (0), bit_offset); |
c9317f21 TT |
9585 | |
9586 | /* The order of fields doesn't really matter, so put the real | |
9587 | field at index 1 and the data-less field at index 2. */ | |
ceacbf6e | 9588 | type->field (1) = saved_field; |
9c6a1327 | 9589 | TYPE_FIELD_NAME (type, 1) |
940da03e SM |
9590 | = rust_last_path_segment (type->field (1).type ()->name ()); |
9591 | type->field (1).type ()->set_name | |
7d93a1e0 | 9592 | (rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
d0e39ea2 | 9593 | TYPE_FIELD_NAME (type, 1))); |
c9317f21 TT |
9594 | |
9595 | const char *dataless_name | |
7d93a1e0 | 9596 | = rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
c9317f21 TT |
9597 | name); |
9598 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9599 | dataless_name); | |
5d14b6e5 | 9600 | type->field (2).set_type (dataless_type); |
c9317f21 TT |
9601 | /* NAME points into the original discriminant name, which |
9602 | already has the correct lifetime. */ | |
9c6a1327 | 9603 | TYPE_FIELD_NAME (type, 2) = name; |
ceacbf6e | 9604 | SET_FIELD_BITPOS (type->field (2), 0); |
c9317f21 | 9605 | |
9c6a1327 TT |
9606 | /* Indicate that this is a variant type. */ |
9607 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9608 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9609 | } |
77c2dba3 TT |
9610 | /* A union with a single anonymous field is probably an old-style |
9611 | univariant enum. */ | |
1f704f76 | 9612 | else if (type->num_fields () == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) |
c9317f21 | 9613 | { |
c9317f21 TT |
9614 | /* Smash this type to be a structure type. We have to do this |
9615 | because the type has already been recorded. */ | |
67607e24 | 9616 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9617 | |
940da03e | 9618 | struct type *field_type = type->field (0).type (); |
c9317f21 | 9619 | const char *variant_name |
7d93a1e0 | 9620 | = rust_last_path_segment (field_type->name ()); |
9c6a1327 | 9621 | TYPE_FIELD_NAME (type, 0) = variant_name; |
d0e39ea2 SM |
9622 | field_type->set_name |
9623 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9624 | type->name (), variant_name)); |
57d02173 TT |
9625 | |
9626 | alloc_rust_variant (&objfile->objfile_obstack, type, -1, 0, {}); | |
c9317f21 TT |
9627 | } |
9628 | else | |
9629 | { | |
9630 | struct type *disr_type = nullptr; | |
1f704f76 | 9631 | for (int i = 0; i < type->num_fields (); ++i) |
c9317f21 | 9632 | { |
940da03e | 9633 | disr_type = type->field (i).type (); |
c9317f21 | 9634 | |
78134374 | 9635 | if (disr_type->code () != TYPE_CODE_STRUCT) |
a037790e TT |
9636 | { |
9637 | /* All fields of a true enum will be structs. */ | |
9638 | return; | |
9639 | } | |
1f704f76 | 9640 | else if (disr_type->num_fields () == 0) |
c9317f21 TT |
9641 | { |
9642 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9643 | disr_type = nullptr; |
c9317f21 TT |
9644 | } |
9645 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9646 | "RUST$ENUM$DISR") != 0) | |
9647 | { | |
9648 | /* Not a Rust enum. */ | |
9649 | return; | |
9650 | } | |
9651 | else | |
9652 | { | |
9653 | /* Found one. */ | |
9654 | break; | |
9655 | } | |
9656 | } | |
9657 | ||
9658 | /* If we got here without a discriminant, then it's probably | |
9659 | just a union. */ | |
9660 | if (disr_type == nullptr) | |
9661 | return; | |
9662 | ||
9663 | /* Smash this type to be a structure type. We have to do this | |
9664 | because the type has already been recorded. */ | |
67607e24 | 9665 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9666 | |
9c6a1327 | 9667 | /* Make space for the discriminant field. */ |
ceacbf6e | 9668 | struct field *disr_field = &disr_type->field (0); |
9c6a1327 | 9669 | field *new_fields |
1f704f76 | 9670 | = (struct field *) TYPE_ZALLOC (type, ((type->num_fields () + 1) |
9c6a1327 | 9671 | * sizeof (struct field))); |
80fc5e77 | 9672 | memcpy (new_fields + 1, type->fields (), |
1f704f76 | 9673 | type->num_fields () * sizeof (struct field)); |
3cabb6b0 | 9674 | type->set_fields (new_fields); |
1f704f76 | 9675 | type->set_num_fields (type->num_fields () + 1); |
c9317f21 TT |
9676 | |
9677 | /* Install the discriminant at index 0 in the union. */ | |
ceacbf6e | 9678 | type->field (0) = *disr_field; |
9c6a1327 TT |
9679 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9680 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9681 | |
9682 | /* We need a way to find the correct discriminant given a | |
9683 | variant name. For convenience we build a map here. */ | |
b6cdac4b | 9684 | struct type *enum_type = disr_field->type (); |
c9317f21 | 9685 | std::unordered_map<std::string, ULONGEST> discriminant_map; |
1f704f76 | 9686 | for (int i = 0; i < enum_type->num_fields (); ++i) |
c9317f21 TT |
9687 | { |
9688 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9689 | { | |
9690 | const char *name | |
9691 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9692 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9693 | } | |
9694 | } | |
9695 | ||
1f704f76 | 9696 | int n_fields = type->num_fields (); |
9c6a1327 TT |
9697 | /* We don't need a range entry for the discriminant, but we do |
9698 | need one for every other field, as there is no default | |
9699 | variant. */ | |
9700 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9701 | discriminant_range, | |
9702 | n_fields - 1); | |
c9317f21 TT |
9703 | /* Skip the discriminant here. */ |
9704 | for (int i = 1; i < n_fields; ++i) | |
9705 | { | |
9706 | /* Find the final word in the name of this variant's type. | |
9707 | That name can be used to look up the correct | |
9708 | discriminant. */ | |
9709 | const char *variant_name | |
940da03e | 9710 | = rust_last_path_segment (type->field (i).type ()->name ()); |
c9317f21 TT |
9711 | |
9712 | auto iter = discriminant_map.find (variant_name); | |
9713 | if (iter != discriminant_map.end ()) | |
9c6a1327 | 9714 | { |
57d02173 TT |
9715 | ranges[i - 1].low = iter->second; |
9716 | ranges[i - 1].high = iter->second; | |
9c6a1327 | 9717 | } |
c9317f21 | 9718 | |
57d02173 TT |
9719 | /* In Rust, each element should have the size of the |
9720 | enclosing enum. */ | |
9721 | TYPE_LENGTH (type->field (i).type ()) = TYPE_LENGTH (type); | |
9722 | ||
bedda9ac | 9723 | /* Remove the discriminant field, if it exists. */ |
940da03e | 9724 | struct type *sub_type = type->field (i).type (); |
1f704f76 | 9725 | if (sub_type->num_fields () > 0) |
bedda9ac | 9726 | { |
5e33d5f4 | 9727 | sub_type->set_num_fields (sub_type->num_fields () - 1); |
3cabb6b0 | 9728 | sub_type->set_fields (sub_type->fields () + 1); |
bedda9ac | 9729 | } |
9c6a1327 | 9730 | TYPE_FIELD_NAME (type, i) = variant_name; |
d0e39ea2 SM |
9731 | sub_type->set_name |
9732 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9733 | type->name (), variant_name)); |
c9317f21 | 9734 | } |
9c6a1327 TT |
9735 | |
9736 | /* Indicate that this is a variant type. */ | |
a1520ad8 | 9737 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, -1, |
9c6a1327 TT |
9738 | gdb::array_view<discriminant_range> (ranges, |
9739 | n_fields - 1)); | |
c9317f21 TT |
9740 | } |
9741 | } | |
9742 | ||
9743 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9744 | ||
9745 | static void | |
9746 | rust_union_quirks (struct dwarf2_cu *cu) | |
9747 | { | |
9748 | gdb_assert (cu->language == language_rust); | |
52941706 | 9749 | for (type *type_ : cu->rust_unions) |
5e22e966 | 9750 | quirk_rust_enum (type_, cu->per_objfile->objfile); |
2d79090e TT |
9751 | /* We don't need this any more. */ |
9752 | cu->rust_unions.clear (); | |
c9317f21 TT |
9753 | } |
9754 | ||
8adb8487 TT |
9755 | /* See read.h. */ |
9756 | ||
9757 | type_unit_group_unshareable * | |
9758 | dwarf2_per_objfile::get_type_unit_group_unshareable (type_unit_group *tu_group) | |
9759 | { | |
9760 | auto iter = this->m_type_units.find (tu_group); | |
9761 | if (iter != this->m_type_units.end ()) | |
9762 | return iter->second.get (); | |
9763 | ||
9764 | type_unit_group_unshareable_up uniq (new type_unit_group_unshareable); | |
9765 | type_unit_group_unshareable *result = uniq.get (); | |
9766 | this->m_type_units[tu_group] = std::move (uniq); | |
9767 | return result; | |
9768 | } | |
9769 | ||
e286671b TT |
9770 | struct type * |
9771 | dwarf2_per_objfile::get_type_for_signatured_type | |
9772 | (signatured_type *sig_type) const | |
9773 | { | |
9774 | auto iter = this->m_type_map.find (sig_type); | |
9775 | if (iter == this->m_type_map.end ()) | |
9776 | return nullptr; | |
9777 | ||
9778 | return iter->second; | |
9779 | } | |
9780 | ||
9781 | void dwarf2_per_objfile::set_type_for_signatured_type | |
9782 | (signatured_type *sig_type, struct type *type) | |
9783 | { | |
9784 | gdb_assert (this->m_type_map.find (sig_type) == this->m_type_map.end ()); | |
9785 | ||
9786 | this->m_type_map[sig_type] = type; | |
9787 | } | |
9788 | ||
95554aad TT |
9789 | /* A helper function for computing the list of all symbol tables |
9790 | included by PER_CU. */ | |
9791 | ||
9792 | static void | |
4c39bc03 | 9793 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9794 | htab_t all_children, htab_t all_type_symtabs, |
43182c09 SM |
9795 | dwarf2_per_cu_data *per_cu, |
9796 | dwarf2_per_objfile *per_objfile, | |
43f3e411 | 9797 | struct compunit_symtab *immediate_parent) |
95554aad | 9798 | { |
af758d11 | 9799 | void **slot = htab_find_slot (all_children, per_cu, INSERT); |
95554aad TT |
9800 | if (*slot != NULL) |
9801 | { | |
9802 | /* This inclusion and its children have been processed. */ | |
9803 | return; | |
9804 | } | |
9805 | ||
9806 | *slot = per_cu; | |
af758d11 | 9807 | |
95554aad | 9808 | /* Only add a CU if it has a symbol table. */ |
43182c09 | 9809 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
43f3e411 | 9810 | if (cust != NULL) |
ec94af83 DE |
9811 | { |
9812 | /* If this is a type unit only add its symbol table if we haven't | |
9813 | seen it yet (type unit per_cu's can share symtabs). */ | |
9814 | if (per_cu->is_debug_types) | |
9815 | { | |
43f3e411 | 9816 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9817 | if (*slot == NULL) |
9818 | { | |
43f3e411 | 9819 | *slot = cust; |
4c39bc03 | 9820 | result->push_back (cust); |
43f3e411 DE |
9821 | if (cust->user == NULL) |
9822 | cust->user = immediate_parent; | |
ec94af83 DE |
9823 | } |
9824 | } | |
9825 | else | |
f9125b6c | 9826 | { |
4c39bc03 | 9827 | result->push_back (cust); |
43f3e411 DE |
9828 | if (cust->user == NULL) |
9829 | cust->user = immediate_parent; | |
f9125b6c | 9830 | } |
ec94af83 | 9831 | } |
95554aad | 9832 | |
ae640021 AB |
9833 | if (!per_cu->imported_symtabs_empty ()) |
9834 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9835 | { | |
9836 | recursively_compute_inclusions (result, all_children, | |
43182c09 SM |
9837 | all_type_symtabs, ptr, per_objfile, |
9838 | cust); | |
ae640021 | 9839 | } |
95554aad TT |
9840 | } |
9841 | ||
43f3e411 | 9842 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9843 | PER_CU. */ |
9844 | ||
9845 | static void | |
43182c09 SM |
9846 | compute_compunit_symtab_includes (dwarf2_per_cu_data *per_cu, |
9847 | dwarf2_per_objfile *per_objfile) | |
95554aad | 9848 | { |
f4dc4d17 DE |
9849 | gdb_assert (! per_cu->is_debug_types); |
9850 | ||
ae640021 | 9851 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9852 | { |
ae640021 | 9853 | int len; |
4c39bc03 | 9854 | std::vector<compunit_symtab *> result_symtabs; |
43182c09 | 9855 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
95554aad TT |
9856 | |
9857 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9858 | if (cust == NULL) |
95554aad TT |
9859 | return; |
9860 | ||
280a9412 TT |
9861 | htab_up all_children (htab_create_alloc (1, htab_hash_pointer, |
9862 | htab_eq_pointer, | |
9863 | NULL, xcalloc, xfree)); | |
9864 | htab_up all_type_symtabs (htab_create_alloc (1, htab_hash_pointer, | |
9865 | htab_eq_pointer, | |
9866 | NULL, xcalloc, xfree)); | |
95554aad | 9867 | |
ae640021 | 9868 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 | 9869 | { |
280a9412 TT |
9870 | recursively_compute_inclusions (&result_symtabs, all_children.get (), |
9871 | all_type_symtabs.get (), ptr, | |
9872 | per_objfile, cust); | |
ec94af83 | 9873 | } |
95554aad | 9874 | |
ec94af83 | 9875 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9876 | len = result_symtabs.size (); |
43f3e411 | 9877 | cust->includes |
f6e649dd | 9878 | = XOBNEWVEC (&per_objfile->objfile->objfile_obstack, |
8d749320 | 9879 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9880 | memcpy (cust->includes, result_symtabs.data (), |
9881 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9882 | cust->includes[len] = NULL; |
95554aad TT |
9883 | } |
9884 | } | |
9885 | ||
9886 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9887 | read. */ | |
9888 | ||
9889 | static void | |
976ca316 | 9890 | process_cu_includes (dwarf2_per_objfile *per_objfile) |
95554aad | 9891 | { |
976ca316 | 9892 | for (dwarf2_per_cu_data *iter : per_objfile->per_bfd->just_read_cus) |
f4dc4d17 DE |
9893 | { |
9894 | if (! iter->is_debug_types) | |
976ca316 | 9895 | compute_compunit_symtab_includes (iter, per_objfile); |
f4dc4d17 | 9896 | } |
95554aad | 9897 | |
976ca316 | 9898 | per_objfile->per_bfd->just_read_cus.clear (); |
95554aad TT |
9899 | } |
9900 | ||
8fc0b21d | 9901 | /* Generate full symbol information for CU, whose DIEs have |
10b3939b DJ |
9902 | already been loaded into memory. */ |
9903 | ||
9904 | static void | |
8fc0b21d | 9905 | process_full_comp_unit (dwarf2_cu *cu, enum language pretend_language) |
10b3939b | 9906 | { |
976ca316 SM |
9907 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9908 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 9909 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 9910 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9911 | struct compunit_symtab *cust; |
10b3939b | 9912 | CORE_ADDR baseaddr; |
4359dff1 | 9913 | struct block *static_block; |
3e29f34a | 9914 | CORE_ADDR addr; |
10b3939b | 9915 | |
b3b3bada | 9916 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9917 | |
c89b44cd TT |
9918 | /* Clear the list here in case something was left over. */ |
9919 | cu->method_list.clear (); | |
10b3939b | 9920 | |
95554aad TT |
9921 | cu->language = pretend_language; |
9922 | cu->language_defn = language_def (cu->language); | |
9923 | ||
c906108c | 9924 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9925 | process_die (cu->dies, cu); |
c906108c | 9926 | |
a766d390 DE |
9927 | /* For now fudge the Go package. */ |
9928 | if (cu->language == language_go) | |
9929 | fixup_go_packaging (cu); | |
9930 | ||
5f48f8f3 | 9931 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9932 | should be complete, and it should now be safe to compute all of the |
9933 | physnames. */ | |
9934 | compute_delayed_physnames (cu); | |
3da10d80 | 9935 | |
c9317f21 TT |
9936 | if (cu->language == language_rust) |
9937 | rust_union_quirks (cu); | |
9938 | ||
fae299cd DC |
9939 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9940 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9941 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9942 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9943 | |
3e29f34a | 9944 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9945 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
9946 | |
9947 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
9948 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
9949 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
9950 | addrmap to help ensure it has an accurate map of pc values belonging to | |
9951 | this comp unit. */ | |
9952 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
9953 | ||
c24bdb02 | 9954 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
9955 | SECT_OFF_TEXT (objfile), |
9956 | 0); | |
c906108c | 9957 | |
43f3e411 | 9958 | if (cust != NULL) |
c906108c | 9959 | { |
df15bd07 | 9960 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 9961 | |
8be455d7 JK |
9962 | /* Set symtab language to language from DW_AT_language. If the |
9963 | compilation is from a C file generated by language preprocessors, do | |
9964 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 9965 | if (!(cu->language == language_c |
40e3ad0e | 9966 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 9967 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
9968 | |
9969 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
9970 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
9971 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
9972 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
9973 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
9974 | |
9975 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
9976 | needed, it would be wrong due to missing DW_AT_producer there. | |
9977 | ||
9978 | Still one can confuse GDB by using non-standard GCC compilation | |
9979 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 9980 | */ |
ab260dad | 9981 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 9982 | cust->locations_valid = 1; |
e0d00bc7 JK |
9983 | |
9984 | if (gcc_4_minor >= 5) | |
43f3e411 | 9985 | cust->epilogue_unwind_valid = 1; |
96408a79 | 9986 | |
43f3e411 | 9987 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 9988 | } |
9291a0cd | 9989 | |
976ca316 | 9990 | per_objfile->set_symtab (cu->per_cu, cust); |
c906108c | 9991 | |
95554aad | 9992 | /* Push it for inclusion processing later. */ |
976ca316 | 9993 | per_objfile->per_bfd->just_read_cus.push_back (cu->per_cu); |
804d2729 TT |
9994 | |
9995 | /* Not needed any more. */ | |
c24bdb02 | 9996 | cu->reset_builder (); |
f4dc4d17 | 9997 | } |
45cfd468 | 9998 | |
8fc0b21d | 9999 | /* Generate full symbol information for type unit CU, whose DIEs have |
f4dc4d17 DE |
10000 | already been loaded into memory. */ |
10001 | ||
10002 | static void | |
8fc0b21d | 10003 | process_full_type_unit (dwarf2_cu *cu, |
f4dc4d17 DE |
10004 | enum language pretend_language) |
10005 | { | |
976ca316 SM |
10006 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10007 | struct objfile *objfile = per_objfile->objfile; | |
43f3e411 | 10008 | struct compunit_symtab *cust; |
0186c6a7 DE |
10009 | struct signatured_type *sig_type; |
10010 | ||
8fc0b21d SM |
10011 | gdb_assert (cu->per_cu->is_debug_types); |
10012 | sig_type = (struct signatured_type *) cu->per_cu; | |
f4dc4d17 | 10013 | |
c89b44cd TT |
10014 | /* Clear the list here in case something was left over. */ |
10015 | cu->method_list.clear (); | |
f4dc4d17 | 10016 | |
f4dc4d17 DE |
10017 | cu->language = pretend_language; |
10018 | cu->language_defn = language_def (cu->language); | |
10019 | ||
10020 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10021 | process_die (cu->dies, cu); | |
10022 | ||
10023 | /* For now fudge the Go package. */ | |
10024 | if (cu->language == language_go) | |
10025 | fixup_go_packaging (cu); | |
10026 | ||
5f48f8f3 | 10027 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
10028 | should be complete, and it should now be safe to compute all of the |
10029 | physnames. */ | |
10030 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10031 | |
c9317f21 TT |
10032 | if (cu->language == language_rust) |
10033 | rust_union_quirks (cu); | |
10034 | ||
f4dc4d17 DE |
10035 | /* TUs share symbol tables. |
10036 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10037 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10038 | this TU's symbols to the existing symtab. */ | |
8adb8487 | 10039 | type_unit_group_unshareable *tug_unshare = |
976ca316 | 10040 | per_objfile->get_type_unit_group_unshareable (sig_type->type_unit_group); |
8adb8487 | 10041 | if (tug_unshare->compunit_symtab == NULL) |
45cfd468 | 10042 | { |
c24bdb02 KS |
10043 | buildsym_compunit *builder = cu->get_builder (); |
10044 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
8adb8487 | 10045 | tug_unshare->compunit_symtab = cust; |
f4dc4d17 | 10046 | |
43f3e411 | 10047 | if (cust != NULL) |
f4dc4d17 DE |
10048 | { |
10049 | /* Set symtab language to language from DW_AT_language. If the | |
10050 | compilation is from a C file generated by language preprocessors, | |
10051 | do not set the language if it was already deduced by | |
10052 | start_subfile. */ | |
43f3e411 DE |
10053 | if (!(cu->language == language_c |
10054 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10055 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10056 | } |
10057 | } | |
10058 | else | |
10059 | { | |
c24bdb02 | 10060 | cu->get_builder ()->augment_type_symtab (); |
8adb8487 | 10061 | cust = tug_unshare->compunit_symtab; |
f4dc4d17 DE |
10062 | } |
10063 | ||
976ca316 | 10064 | per_objfile->set_symtab (cu->per_cu, cust); |
804d2729 TT |
10065 | |
10066 | /* Not needed any more. */ | |
c24bdb02 | 10067 | cu->reset_builder (); |
c906108c SS |
10068 | } |
10069 | ||
95554aad TT |
10070 | /* Process an imported unit DIE. */ |
10071 | ||
10072 | static void | |
10073 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10074 | { | |
10075 | struct attribute *attr; | |
10076 | ||
f4dc4d17 DE |
10077 | /* For now we don't handle imported units in type units. */ |
10078 | if (cu->per_cu->is_debug_types) | |
10079 | { | |
10080 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10081 | " supported in type units [in module %s]"), | |
5e22e966 | 10082 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
10083 | } |
10084 | ||
95554aad TT |
10085 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10086 | if (attr != NULL) | |
10087 | { | |
0826b30a | 10088 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 | 10089 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
ab432490 | 10090 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9c541725 | 10091 | dwarf2_per_cu_data *per_cu |
ab432490 | 10092 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, per_objfile); |
95554aad | 10093 | |
58990295 TV |
10094 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
10095 | into another compilation unit, at root level. Regard this as a hint, | |
10096 | and ignore it. */ | |
10097 | if (die->parent && die->parent->parent == NULL | |
10098 | && per_cu->unit_type == DW_UT_compile | |
10099 | && per_cu->lang == language_cplus) | |
10100 | return; | |
10101 | ||
69d751e3 | 10102 | /* If necessary, add it to the queue and load its DIEs. */ |
120ce1b5 | 10103 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
ab432490 | 10104 | load_full_comp_unit (per_cu, per_objfile, false, cu->language); |
95554aad | 10105 | |
ae640021 | 10106 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
10107 | } |
10108 | } | |
10109 | ||
4c8aa72d PA |
10110 | /* RAII object that represents a process_die scope: i.e., |
10111 | starts/finishes processing a DIE. */ | |
10112 | class process_die_scope | |
adde2bff | 10113 | { |
4c8aa72d PA |
10114 | public: |
10115 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10116 | : m_die (die), m_cu (cu) | |
10117 | { | |
10118 | /* We should only be processing DIEs not already in process. */ | |
10119 | gdb_assert (!m_die->in_process); | |
10120 | m_die->in_process = true; | |
10121 | } | |
8c3cb9fa | 10122 | |
4c8aa72d PA |
10123 | ~process_die_scope () |
10124 | { | |
10125 | m_die->in_process = false; | |
10126 | ||
10127 | /* If we're done processing the DIE for the CU that owns the line | |
10128 | header, we don't need the line header anymore. */ | |
10129 | if (m_cu->line_header_die_owner == m_die) | |
10130 | { | |
10131 | delete m_cu->line_header; | |
10132 | m_cu->line_header = NULL; | |
10133 | m_cu->line_header_die_owner = NULL; | |
10134 | } | |
10135 | } | |
10136 | ||
10137 | private: | |
10138 | die_info *m_die; | |
10139 | dwarf2_cu *m_cu; | |
10140 | }; | |
adde2bff | 10141 | |
c906108c SS |
10142 | /* Process a die and its children. */ |
10143 | ||
10144 | static void | |
e7c27a73 | 10145 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10146 | { |
4c8aa72d | 10147 | process_die_scope scope (die, cu); |
adde2bff | 10148 | |
c906108c SS |
10149 | switch (die->tag) |
10150 | { | |
10151 | case DW_TAG_padding: | |
10152 | break; | |
10153 | case DW_TAG_compile_unit: | |
95554aad | 10154 | case DW_TAG_partial_unit: |
e7c27a73 | 10155 | read_file_scope (die, cu); |
c906108c | 10156 | break; |
348e048f DE |
10157 | case DW_TAG_type_unit: |
10158 | read_type_unit_scope (die, cu); | |
10159 | break; | |
c906108c | 10160 | case DW_TAG_subprogram: |
0a4b0913 AB |
10161 | /* Nested subprograms in Fortran get a prefix. */ |
10162 | if (cu->language == language_fortran | |
10163 | && die->parent != NULL | |
10164 | && die->parent->tag == DW_TAG_subprogram) | |
10165 | cu->processing_has_namespace_info = true; | |
10166 | /* Fall through. */ | |
c906108c | 10167 | case DW_TAG_inlined_subroutine: |
edb3359d | 10168 | read_func_scope (die, cu); |
c906108c SS |
10169 | break; |
10170 | case DW_TAG_lexical_block: | |
14898363 L |
10171 | case DW_TAG_try_block: |
10172 | case DW_TAG_catch_block: | |
e7c27a73 | 10173 | read_lexical_block_scope (die, cu); |
c906108c | 10174 | break; |
216f72a1 | 10175 | case DW_TAG_call_site: |
96408a79 SA |
10176 | case DW_TAG_GNU_call_site: |
10177 | read_call_site_scope (die, cu); | |
10178 | break; | |
c906108c | 10179 | case DW_TAG_class_type: |
680b30c7 | 10180 | case DW_TAG_interface_type: |
c906108c SS |
10181 | case DW_TAG_structure_type: |
10182 | case DW_TAG_union_type: | |
134d01f1 | 10183 | process_structure_scope (die, cu); |
c906108c SS |
10184 | break; |
10185 | case DW_TAG_enumeration_type: | |
134d01f1 | 10186 | process_enumeration_scope (die, cu); |
c906108c | 10187 | break; |
134d01f1 | 10188 | |
f792889a DJ |
10189 | /* These dies have a type, but processing them does not create |
10190 | a symbol or recurse to process the children. Therefore we can | |
10191 | read them on-demand through read_type_die. */ | |
c906108c | 10192 | case DW_TAG_subroutine_type: |
72019c9c | 10193 | case DW_TAG_set_type: |
c906108c | 10194 | case DW_TAG_array_type: |
c906108c | 10195 | case DW_TAG_pointer_type: |
c906108c | 10196 | case DW_TAG_ptr_to_member_type: |
c906108c | 10197 | case DW_TAG_reference_type: |
4297a3f0 | 10198 | case DW_TAG_rvalue_reference_type: |
c906108c | 10199 | case DW_TAG_string_type: |
c906108c | 10200 | break; |
134d01f1 | 10201 | |
c906108c | 10202 | case DW_TAG_base_type: |
a02abb62 | 10203 | case DW_TAG_subrange_type: |
cb249c71 | 10204 | case DW_TAG_typedef: |
134d01f1 DJ |
10205 | /* Add a typedef symbol for the type definition, if it has a |
10206 | DW_AT_name. */ | |
f792889a | 10207 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10208 | break; |
c906108c | 10209 | case DW_TAG_common_block: |
e7c27a73 | 10210 | read_common_block (die, cu); |
c906108c SS |
10211 | break; |
10212 | case DW_TAG_common_inclusion: | |
10213 | break; | |
d9fa45fe | 10214 | case DW_TAG_namespace: |
9068261f | 10215 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10216 | read_namespace (die, cu); |
d9fa45fe | 10217 | break; |
5d7cb8df | 10218 | case DW_TAG_module: |
9068261f | 10219 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10220 | read_module (die, cu); |
10221 | break; | |
d9fa45fe | 10222 | case DW_TAG_imported_declaration: |
9068261f | 10223 | cu->processing_has_namespace_info = true; |
74921315 KS |
10224 | if (read_namespace_alias (die, cu)) |
10225 | break; | |
86a73007 TT |
10226 | /* The declaration is not a global namespace alias. */ |
10227 | /* Fall through. */ | |
d9fa45fe | 10228 | case DW_TAG_imported_module: |
9068261f | 10229 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10230 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10231 | || cu->language != language_fortran)) | |
b98664d3 | 10232 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10233 | dwarf_tag_name (die->tag)); |
10234 | read_import_statement (die, cu); | |
d9fa45fe | 10235 | break; |
95554aad TT |
10236 | |
10237 | case DW_TAG_imported_unit: | |
10238 | process_imported_unit_die (die, cu); | |
10239 | break; | |
10240 | ||
71a3c369 TT |
10241 | case DW_TAG_variable: |
10242 | read_variable (die, cu); | |
10243 | break; | |
10244 | ||
c906108c | 10245 | default: |
e7c27a73 | 10246 | new_symbol (die, NULL, cu); |
c906108c SS |
10247 | break; |
10248 | } | |
10249 | } | |
ca69b9e6 DE |
10250 | \f |
10251 | /* DWARF name computation. */ | |
c906108c | 10252 | |
94af9270 KS |
10253 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10254 | needs to have the name of the scope prepended to the name listed in the | |
10255 | die. */ | |
10256 | ||
10257 | static int | |
10258 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10259 | { | |
1c809c68 TT |
10260 | struct attribute *attr; |
10261 | ||
94af9270 KS |
10262 | switch (die->tag) |
10263 | { | |
10264 | case DW_TAG_namespace: | |
10265 | case DW_TAG_typedef: | |
10266 | case DW_TAG_class_type: | |
10267 | case DW_TAG_interface_type: | |
10268 | case DW_TAG_structure_type: | |
10269 | case DW_TAG_union_type: | |
10270 | case DW_TAG_enumeration_type: | |
10271 | case DW_TAG_enumerator: | |
10272 | case DW_TAG_subprogram: | |
08a76f8a | 10273 | case DW_TAG_inlined_subroutine: |
94af9270 | 10274 | case DW_TAG_member: |
74921315 | 10275 | case DW_TAG_imported_declaration: |
94af9270 KS |
10276 | return 1; |
10277 | ||
10278 | case DW_TAG_variable: | |
c2b0a229 | 10279 | case DW_TAG_constant: |
94af9270 KS |
10280 | /* We only need to prefix "globally" visible variables. These include |
10281 | any variable marked with DW_AT_external or any variable that | |
10282 | lives in a namespace. [Variables in anonymous namespaces | |
10283 | require prefixing, but they are not DW_AT_external.] */ | |
10284 | ||
10285 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10286 | { | |
10287 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10288 | |
94af9270 KS |
10289 | return die_needs_namespace (die_specification (die, &spec_cu), |
10290 | spec_cu); | |
10291 | } | |
10292 | ||
1c809c68 | 10293 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10294 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10295 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10296 | return 0; |
10297 | /* A variable in a lexical block of some kind does not need a | |
10298 | namespace, even though in C++ such variables may be external | |
10299 | and have a mangled name. */ | |
10300 | if (die->parent->tag == DW_TAG_lexical_block | |
10301 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10302 | || die->parent->tag == DW_TAG_catch_block |
10303 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10304 | return 0; |
10305 | return 1; | |
94af9270 KS |
10306 | |
10307 | default: | |
10308 | return 0; | |
10309 | } | |
10310 | } | |
10311 | ||
73b9be8b KS |
10312 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10313 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10314 | defined for the given DIE. */ | |
10315 | ||
10316 | static struct attribute * | |
10317 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10318 | { | |
10319 | struct attribute *attr; | |
10320 | ||
10321 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10322 | if (attr == NULL) | |
10323 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10324 | ||
10325 | return attr; | |
10326 | } | |
10327 | ||
10328 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10329 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10330 | defined for the given DIE. */ | |
10331 | ||
10332 | static const char * | |
10333 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10334 | { | |
10335 | const char *linkage_name; | |
10336 | ||
10337 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10338 | if (linkage_name == NULL) | |
10339 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10340 | ||
787de330 TT |
10341 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10342 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10343 | if (cu->language == language_rust && linkage_name != NULL | |
10344 | && strchr (linkage_name, '{') != NULL) | |
10345 | linkage_name = NULL; | |
10346 | ||
73b9be8b KS |
10347 | return linkage_name; |
10348 | } | |
10349 | ||
94af9270 | 10350 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10351 | compute the physname for the object, which include a method's: |
9c37b5ae | 10352 | - formal parameters (C++), |
a766d390 | 10353 | - receiver type (Go), |
a766d390 DE |
10354 | |
10355 | The term "physname" is a bit confusing. | |
10356 | For C++, for example, it is the demangled name. | |
10357 | For Go, for example, it's the mangled name. | |
94af9270 | 10358 | |
af6b7be1 JB |
10359 | For Ada, return the DIE's linkage name rather than the fully qualified |
10360 | name. PHYSNAME is ignored.. | |
10361 | ||
5989a64e | 10362 | The result is allocated on the objfile->per_bfd's obstack and |
45940949 | 10363 | canonicalized. */ |
94af9270 KS |
10364 | |
10365 | static const char * | |
15d034d0 TT |
10366 | dwarf2_compute_name (const char *name, |
10367 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10368 | int physname) |
10369 | { | |
5e22e966 | 10370 | struct objfile *objfile = cu->per_objfile->objfile; |
bb5ed363 | 10371 | |
94af9270 KS |
10372 | if (name == NULL) |
10373 | name = dwarf2_name (die, cu); | |
10374 | ||
2ee7123e DE |
10375 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10376 | but otherwise compute it by typename_concat inside GDB. | |
10377 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10378 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10379 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10380 | will set the demangled name to the result of dwarf2_full_name, and it is |
10381 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10382 | if (cu->language == language_ada |
10383 | || (cu->language == language_fortran && physname)) | |
10384 | { | |
10385 | /* For Ada unit, we prefer the linkage name over the name, as | |
10386 | the former contains the exported name, which the user expects | |
10387 | to be able to reference. Ideally, we want the user to be able | |
10388 | to reference this entity using either natural or linkage name, | |
10389 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10390 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10391 | |
2ee7123e DE |
10392 | if (linkage_name != NULL) |
10393 | return linkage_name; | |
f55ee35c JK |
10394 | } |
10395 | ||
94af9270 KS |
10396 | /* These are the only languages we know how to qualify names in. */ |
10397 | if (name != NULL | |
9c37b5ae | 10398 | && (cu->language == language_cplus |
c44af4eb TT |
10399 | || cu->language == language_fortran || cu->language == language_d |
10400 | || cu->language == language_rust)) | |
94af9270 KS |
10401 | { |
10402 | if (die_needs_namespace (die, cu)) | |
10403 | { | |
0d5cff50 | 10404 | const char *prefix; |
34a68019 | 10405 | const char *canonical_name = NULL; |
94af9270 | 10406 | |
d7e74731 PA |
10407 | string_file buf; |
10408 | ||
94af9270 | 10409 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10410 | if (*prefix != '\0') |
10411 | { | |
43816ebc TT |
10412 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10413 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10414 | |
43816ebc | 10415 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10416 | } |
10417 | else | |
d7e74731 | 10418 | buf.puts (name); |
94af9270 | 10419 | |
98bfdba5 PA |
10420 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10421 | as children with DW_TAG_template_type_param or | |
10422 | DW_TAG_value_type_param. If the latter, add them to the name | |
10423 | here. If the name already has template parameters, then | |
10424 | skip this step; some versions of GCC emit both, and | |
10425 | it is more efficient to use the pre-computed name. | |
10426 | ||
10427 | Something to keep in mind about this process: it is very | |
10428 | unlikely, or in some cases downright impossible, to produce | |
10429 | something that will match the mangled name of a function. | |
10430 | If the definition of the function has the same debug info, | |
10431 | we should be able to match up with it anyway. But fallbacks | |
10432 | using the minimal symbol, for instance to find a method | |
10433 | implemented in a stripped copy of libstdc++, will not work. | |
10434 | If we do not have debug info for the definition, we will have to | |
10435 | match them up some other way. | |
10436 | ||
10437 | When we do name matching there is a related problem with function | |
10438 | templates; two instantiated function templates are allowed to | |
10439 | differ only by their return types, which we do not add here. */ | |
10440 | ||
10441 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10442 | { | |
10443 | struct attribute *attr; | |
10444 | struct die_info *child; | |
10445 | int first = 1; | |
10446 | ||
10447 | die->building_fullname = 1; | |
10448 | ||
10449 | for (child = die->child; child != NULL; child = child->sibling) | |
10450 | { | |
10451 | struct type *type; | |
12df843f | 10452 | LONGEST value; |
d521ce57 | 10453 | const gdb_byte *bytes; |
98bfdba5 PA |
10454 | struct dwarf2_locexpr_baton *baton; |
10455 | struct value *v; | |
10456 | ||
10457 | if (child->tag != DW_TAG_template_type_param | |
10458 | && child->tag != DW_TAG_template_value_param) | |
10459 | continue; | |
10460 | ||
10461 | if (first) | |
10462 | { | |
d7e74731 | 10463 | buf.puts ("<"); |
98bfdba5 PA |
10464 | first = 0; |
10465 | } | |
10466 | else | |
d7e74731 | 10467 | buf.puts (", "); |
98bfdba5 PA |
10468 | |
10469 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10470 | if (attr == NULL) | |
10471 | { | |
b98664d3 | 10472 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10473 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10474 | continue; |
10475 | } | |
10476 | type = die_type (child, cu); | |
10477 | ||
10478 | if (child->tag == DW_TAG_template_type_param) | |
10479 | { | |
c1ec8cea TT |
10480 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10481 | &type_print_raw_options); | |
98bfdba5 PA |
10482 | continue; |
10483 | } | |
10484 | ||
10485 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10486 | if (attr == NULL) | |
10487 | { | |
b98664d3 | 10488 | complaint (_("template parameter missing " |
3e43a32a | 10489 | "DW_AT_const_value")); |
d7e74731 | 10490 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10491 | continue; |
10492 | } | |
10493 | ||
10494 | dwarf2_const_value_attr (attr, type, name, | |
10495 | &cu->comp_unit_obstack, cu, | |
10496 | &value, &bytes, &baton); | |
10497 | ||
20ce4123 | 10498 | if (type->has_no_signedness ()) |
98bfdba5 PA |
10499 | /* GDB prints characters as NUMBER 'CHAR'. If that's |
10500 | changed, this can use value_print instead. */ | |
d7e74731 | 10501 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10502 | else |
10503 | { | |
10504 | struct value_print_options opts; | |
10505 | ||
10506 | if (baton != NULL) | |
10507 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10508 | baton->data, | |
10509 | baton->size, | |
9f47c707 SM |
10510 | baton->per_cu, |
10511 | baton->per_objfile); | |
98bfdba5 PA |
10512 | else if (bytes != NULL) |
10513 | { | |
10514 | v = allocate_value (type); | |
10515 | memcpy (value_contents_writeable (v), bytes, | |
10516 | TYPE_LENGTH (type)); | |
10517 | } | |
10518 | else | |
10519 | v = value_from_longest (type, value); | |
10520 | ||
3e43a32a MS |
10521 | /* Specify decimal so that we do not depend on |
10522 | the radix. */ | |
98bfdba5 PA |
10523 | get_formatted_print_options (&opts, 'd'); |
10524 | opts.raw = 1; | |
d7e74731 | 10525 | value_print (v, &buf, &opts); |
98bfdba5 | 10526 | release_value (v); |
98bfdba5 PA |
10527 | } |
10528 | } | |
10529 | ||
10530 | die->building_fullname = 0; | |
10531 | ||
10532 | if (!first) | |
10533 | { | |
10534 | /* Close the argument list, with a space if necessary | |
10535 | (nested templates). */ | |
d7e74731 PA |
10536 | if (!buf.empty () && buf.string ().back () == '>') |
10537 | buf.puts (" >"); | |
98bfdba5 | 10538 | else |
d7e74731 | 10539 | buf.puts (">"); |
98bfdba5 PA |
10540 | } |
10541 | } | |
10542 | ||
9c37b5ae | 10543 | /* For C++ methods, append formal parameter type |
94af9270 | 10544 | information, if PHYSNAME. */ |
6e70227d | 10545 | |
94af9270 | 10546 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10547 | && cu->language == language_cplus) |
94af9270 KS |
10548 | { |
10549 | struct type *type = read_type_die (die, cu); | |
10550 | ||
d7e74731 | 10551 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10552 | &type_print_raw_options); |
94af9270 | 10553 | |
9c37b5ae | 10554 | if (cu->language == language_cplus) |
94af9270 | 10555 | { |
60430eff DJ |
10556 | /* Assume that an artificial first parameter is |
10557 | "this", but do not crash if it is not. RealView | |
10558 | marks unnamed (and thus unused) parameters as | |
10559 | artificial; there is no way to differentiate | |
10560 | the two cases. */ | |
1f704f76 | 10561 | if (type->num_fields () > 0 |
94af9270 | 10562 | && TYPE_FIELD_ARTIFICIAL (type, 0) |
940da03e SM |
10563 | && type->field (0).type ()->code () == TYPE_CODE_PTR |
10564 | && TYPE_CONST (TYPE_TARGET_TYPE (type->field (0).type ()))) | |
d7e74731 | 10565 | buf.puts (" const"); |
94af9270 KS |
10566 | } |
10567 | } | |
10568 | ||
d7e74731 | 10569 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10570 | |
10571 | if (cu->language == language_cplus) | |
34a68019 | 10572 | canonical_name |
322a8516 | 10573 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10574 | objfile); |
34a68019 TT |
10575 | |
10576 | /* If we only computed INTERMEDIATE_NAME, or if | |
10577 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10578 | intern it. */ |
322a8516 | 10579 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10580 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10581 | else |
10582 | name = canonical_name; | |
94af9270 KS |
10583 | } |
10584 | } | |
10585 | ||
10586 | return name; | |
10587 | } | |
10588 | ||
0114d602 DJ |
10589 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10590 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10591 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10592 | not have a name. NAME may either be from a previous call to |
10593 | dwarf2_name or NULL. | |
10594 | ||
9c37b5ae | 10595 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10596 | |
10597 | static const char * | |
15d034d0 | 10598 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10599 | { |
94af9270 KS |
10600 | return dwarf2_compute_name (name, die, cu, 0); |
10601 | } | |
0114d602 | 10602 | |
94af9270 KS |
10603 | /* Construct a physname for the given DIE in CU. NAME may either be |
10604 | from a previous call to dwarf2_name or NULL. The result will be | |
10605 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10606 | name. | |
0114d602 | 10607 | |
9c37b5ae | 10608 | The output string will be canonicalized (if C++). */ |
0114d602 | 10609 | |
94af9270 | 10610 | static const char * |
15d034d0 | 10611 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10612 | { |
5e22e966 | 10613 | struct objfile *objfile = cu->per_objfile->objfile; |
900e11f9 | 10614 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10615 | int need_copy = 1; |
10616 | ||
10617 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10618 | on its own. */ | |
10619 | if (!die_needs_namespace (die, cu)) | |
10620 | return dwarf2_compute_name (name, die, cu, 1); | |
10621 | ||
906bb4c5 TT |
10622 | if (cu->language != language_rust) |
10623 | mangled = dw2_linkage_name (die, cu); | |
900e11f9 JK |
10624 | |
10625 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10626 | has computed. */ | |
791afaa2 | 10627 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10628 | if (mangled != NULL) |
900e11f9 | 10629 | { |
900e11f9 | 10630 | |
d3355e4d | 10631 | if (language_def (cu->language)->store_sym_names_in_linkage_form_p ()) |
59cc4834 JB |
10632 | { |
10633 | /* Do nothing (do not demangle the symbol name). */ | |
10634 | } | |
a766d390 DE |
10635 | else |
10636 | { | |
0eb876f5 JB |
10637 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10638 | their return type. It is easier for GDB users to search | |
10639 | for such functions as `name(params)' than `long name(params)'. | |
10640 | In such case the minimal symbol names do not match the full | |
10641 | symbol names but for template functions there is never a need | |
10642 | to look up their definition from their declaration so | |
10643 | the only disadvantage remains the minimal symbol variant | |
10644 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10645 | demangled.reset (gdb_demangle (mangled, |
10646 | (DMGL_PARAMS | DMGL_ANSI | |
10647 | | DMGL_RET_DROP))); | |
a766d390 | 10648 | } |
900e11f9 | 10649 | if (demangled) |
791afaa2 | 10650 | canon = demangled.get (); |
900e11f9 JK |
10651 | else |
10652 | { | |
10653 | canon = mangled; | |
10654 | need_copy = 0; | |
10655 | } | |
10656 | } | |
10657 | ||
10658 | if (canon == NULL || check_physname) | |
10659 | { | |
10660 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10661 | ||
10662 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10663 | { | |
10664 | /* It may not mean a bug in GDB. The compiler could also | |
10665 | compute DW_AT_linkage_name incorrectly. But in such case | |
10666 | GDB would need to be bug-to-bug compatible. */ | |
10667 | ||
b98664d3 | 10668 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10669 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10670 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10671 | objfile_name (objfile)); |
900e11f9 JK |
10672 | |
10673 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10674 | is available here - over computed PHYSNAME. It is safer | |
10675 | against both buggy GDB and buggy compilers. */ | |
10676 | ||
10677 | retval = canon; | |
10678 | } | |
10679 | else | |
10680 | { | |
10681 | retval = physname; | |
10682 | need_copy = 0; | |
10683 | } | |
10684 | } | |
10685 | else | |
10686 | retval = canon; | |
10687 | ||
10688 | if (need_copy) | |
be1e3d3e | 10689 | retval = objfile->intern (retval); |
900e11f9 | 10690 | |
900e11f9 | 10691 | return retval; |
0114d602 DJ |
10692 | } |
10693 | ||
74921315 KS |
10694 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10695 | a new symbol for it. | |
10696 | ||
10697 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10698 | ||
10699 | static int | |
10700 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10701 | { | |
10702 | struct attribute *attr; | |
10703 | ||
10704 | /* If the die does not have a name, this is not a namespace | |
10705 | alias. */ | |
10706 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10707 | if (attr != NULL) | |
10708 | { | |
10709 | int num; | |
10710 | struct die_info *d = die; | |
10711 | struct dwarf2_cu *imported_cu = cu; | |
10712 | ||
10713 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10714 | keep inspecting DIEs until we hit the underlying import. */ | |
10715 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10716 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10717 | { | |
10718 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10719 | if (attr == NULL) | |
10720 | break; | |
10721 | ||
10722 | d = follow_die_ref (d, attr, &imported_cu); | |
10723 | if (d->tag != DW_TAG_imported_declaration) | |
10724 | break; | |
10725 | } | |
10726 | ||
10727 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10728 | { | |
b98664d3 | 10729 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10730 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10731 | return 0; |
10732 | } | |
10733 | ||
10734 | if (attr != NULL) | |
10735 | { | |
10736 | struct type *type; | |
0826b30a | 10737 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10738 | |
aa66c379 | 10739 | type = get_die_type_at_offset (sect_off, cu->per_cu, cu->per_objfile); |
78134374 | 10740 | if (type != NULL && type->code () == TYPE_CODE_NAMESPACE) |
74921315 KS |
10741 | { |
10742 | /* This declaration is a global namespace alias. Add | |
10743 | a symbol for it whose type is the aliased namespace. */ | |
10744 | new_symbol (die, type, cu); | |
10745 | return 1; | |
10746 | } | |
10747 | } | |
10748 | } | |
10749 | ||
10750 | return 0; | |
10751 | } | |
10752 | ||
22cee43f | 10753 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10754 | current context for CU. |
22cee43f PMR |
10755 | |
10756 | For Ada, imported declarations can materialize renamings, which *may* be | |
10757 | global. However it is impossible (for now?) in DWARF to distinguish | |
10758 | "external" imported declarations and "static" ones. As all imported | |
10759 | declarations seem to be static in all other languages, make them all CU-wide | |
10760 | global only in Ada. */ | |
10761 | ||
10762 | static struct using_direct ** | |
804d2729 | 10763 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10764 | { |
c24bdb02 KS |
10765 | if (cu->language == language_ada |
10766 | && cu->get_builder ()->outermost_context_p ()) | |
10767 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10768 | else |
c24bdb02 | 10769 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10770 | } |
10771 | ||
27aa8d6a SW |
10772 | /* Read the import statement specified by the given die and record it. */ |
10773 | ||
10774 | static void | |
10775 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10776 | { | |
5e22e966 | 10777 | struct objfile *objfile = cu->per_objfile->objfile; |
27aa8d6a | 10778 | struct attribute *import_attr; |
32019081 | 10779 | struct die_info *imported_die, *child_die; |
de4affc9 | 10780 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10781 | const char *imported_name; |
794684b6 | 10782 | const char *imported_name_prefix; |
13387711 SW |
10783 | const char *canonical_name; |
10784 | const char *import_alias; | |
10785 | const char *imported_declaration = NULL; | |
794684b6 | 10786 | const char *import_prefix; |
eb1e02fd | 10787 | std::vector<const char *> excludes; |
13387711 | 10788 | |
27aa8d6a SW |
10789 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10790 | if (import_attr == NULL) | |
10791 | { | |
b98664d3 | 10792 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10793 | dwarf_tag_name (die->tag)); |
10794 | return; | |
10795 | } | |
10796 | ||
de4affc9 CC |
10797 | imported_cu = cu; |
10798 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10799 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10800 | if (imported_name == NULL) |
10801 | { | |
10802 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10803 | ||
10804 | The import in the following code: | |
10805 | namespace A | |
10806 | { | |
10807 | typedef int B; | |
10808 | } | |
10809 | ||
10810 | int main () | |
10811 | { | |
10812 | using A::B; | |
10813 | B b; | |
10814 | return b; | |
10815 | } | |
10816 | ||
10817 | ... | |
10818 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10819 | <52> DW_AT_decl_file : 1 | |
10820 | <53> DW_AT_decl_line : 6 | |
10821 | <54> DW_AT_import : <0x75> | |
10822 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10823 | <59> DW_AT_name : B | |
10824 | <5b> DW_AT_decl_file : 1 | |
10825 | <5c> DW_AT_decl_line : 2 | |
10826 | <5d> DW_AT_type : <0x6e> | |
10827 | ... | |
10828 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10829 | <76> DW_AT_byte_size : 4 | |
10830 | <77> DW_AT_encoding : 5 (signed) | |
10831 | ||
10832 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10833 | This case will be ignored until the gcc bug is fixed. */ | |
10834 | return; | |
10835 | } | |
10836 | ||
82856980 SW |
10837 | /* Figure out the local name after import. */ |
10838 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10839 | |
794684b6 SW |
10840 | /* Figure out where the statement is being imported to. */ |
10841 | import_prefix = determine_prefix (die, cu); | |
10842 | ||
10843 | /* Figure out what the scope of the imported die is and prepend it | |
10844 | to the name of the imported die. */ | |
de4affc9 | 10845 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10846 | |
f55ee35c JK |
10847 | if (imported_die->tag != DW_TAG_namespace |
10848 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10849 | { |
13387711 SW |
10850 | imported_declaration = imported_name; |
10851 | canonical_name = imported_name_prefix; | |
794684b6 | 10852 | } |
13387711 | 10853 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10854 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10855 | imported_name_prefix, |
10856 | (cu->language == language_d ? "." : "::"), | |
10857 | imported_name, (char *) NULL); | |
13387711 SW |
10858 | else |
10859 | canonical_name = imported_name; | |
794684b6 | 10860 | |
32019081 JK |
10861 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10862 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10863 | child_die = child_die->sibling) |
32019081 JK |
10864 | { |
10865 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10866 | represented by an imported module entry with an import attribute | |
10867 | referring to the module and owned entries corresponding to those | |
10868 | entities that are renamed as part of being imported. */ | |
10869 | ||
10870 | if (child_die->tag != DW_TAG_imported_declaration) | |
10871 | { | |
b98664d3 | 10872 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10873 | "- DIE at %s [in module %s]"), |
10874 | sect_offset_str (child_die->sect_off), | |
10875 | objfile_name (objfile)); | |
32019081 JK |
10876 | continue; |
10877 | } | |
10878 | ||
10879 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10880 | if (import_attr == NULL) | |
10881 | { | |
b98664d3 | 10882 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10883 | dwarf_tag_name (child_die->tag)); |
10884 | continue; | |
10885 | } | |
10886 | ||
10887 | imported_cu = cu; | |
10888 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10889 | &imported_cu); | |
10890 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10891 | if (imported_name == NULL) | |
10892 | { | |
b98664d3 | 10893 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10894 | "imported name - DIE at %s [in module %s]"), |
10895 | sect_offset_str (child_die->sect_off), | |
10896 | objfile_name (objfile)); | |
32019081 JK |
10897 | continue; |
10898 | } | |
10899 | ||
eb1e02fd | 10900 | excludes.push_back (imported_name); |
32019081 JK |
10901 | |
10902 | process_die (child_die, cu); | |
10903 | } | |
10904 | ||
804d2729 | 10905 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10906 | import_prefix, |
10907 | canonical_name, | |
10908 | import_alias, | |
10909 | imported_declaration, | |
10910 | excludes, | |
10911 | 0, | |
10912 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10913 | } |
10914 | ||
5230b05a WT |
10915 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10916 | types, but gives them a size of zero. Starting with version 14, | |
10917 | ICC is compatible with GCC. */ | |
10918 | ||
9068261f | 10919 | static bool |
5230b05a WT |
10920 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10921 | { | |
10922 | if (!cu->checked_producer) | |
10923 | check_producer (cu); | |
10924 | ||
10925 | return cu->producer_is_icc_lt_14; | |
10926 | } | |
10927 | ||
eb77c9df AB |
10928 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10929 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10930 | which says that void functions should not have a DW_AT_type. */ | |
10931 | ||
10932 | static bool | |
10933 | producer_is_icc (struct dwarf2_cu *cu) | |
10934 | { | |
10935 | if (!cu->checked_producer) | |
10936 | check_producer (cu); | |
10937 | ||
10938 | return cu->producer_is_icc; | |
10939 | } | |
10940 | ||
1b80a9fa JK |
10941 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
10942 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
10943 | this, it was first present in GCC release 4.3.0. */ | |
10944 | ||
9068261f | 10945 | static bool |
1b80a9fa JK |
10946 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
10947 | { | |
10948 | if (!cu->checked_producer) | |
10949 | check_producer (cu); | |
10950 | ||
10951 | return cu->producer_is_gcc_lt_4_3; | |
10952 | } | |
10953 | ||
d721ba37 PA |
10954 | static file_and_directory |
10955 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 10956 | { |
d721ba37 PA |
10957 | file_and_directory res; |
10958 | ||
9291a0cd TT |
10959 | /* Find the filename. Do not use dwarf2_name here, since the filename |
10960 | is not a source language identifier. */ | |
d721ba37 PA |
10961 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
10962 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 10963 | |
d721ba37 PA |
10964 | if (res.comp_dir == NULL |
10965 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
10966 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 10967 | { |
d721ba37 PA |
10968 | res.comp_dir_storage = ldirname (res.name); |
10969 | if (!res.comp_dir_storage.empty ()) | |
10970 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 10971 | } |
d721ba37 | 10972 | if (res.comp_dir != NULL) |
9291a0cd TT |
10973 | { |
10974 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
10975 | directory, get rid of it. */ | |
d721ba37 | 10976 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 10977 | |
d721ba37 PA |
10978 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
10979 | res.comp_dir = cp + 1; | |
9291a0cd TT |
10980 | } |
10981 | ||
d721ba37 PA |
10982 | if (res.name == NULL) |
10983 | res.name = "<unknown>"; | |
10984 | ||
10985 | return res; | |
9291a0cd TT |
10986 | } |
10987 | ||
f4dc4d17 DE |
10988 | /* Handle DW_AT_stmt_list for a compilation unit. |
10989 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
10990 | COMP_DIR is the compilation directory. LOWPC is passed to |
10991 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
10992 | |
10993 | static void | |
10994 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 10995 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 10996 | { |
976ca316 | 10997 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
2ab95328 | 10998 | struct attribute *attr; |
527f3840 JK |
10999 | struct line_header line_header_local; |
11000 | hashval_t line_header_local_hash; | |
527f3840 JK |
11001 | void **slot; |
11002 | int decode_mapping; | |
2ab95328 | 11003 | |
f4dc4d17 DE |
11004 | gdb_assert (! cu->per_cu->is_debug_types); |
11005 | ||
2ab95328 | 11006 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
11007 | if (attr == NULL) |
11008 | return; | |
11009 | ||
9c541725 | 11010 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
11011 | |
11012 | /* The line header hash table is only created if needed (it exists to | |
11013 | prevent redundant reading of the line table for partial_units). | |
11014 | If we're given a partial_unit, we'll need it. If we're given a | |
11015 | compile_unit, then use the line header hash table if it's already | |
11016 | created, but don't create one just yet. */ | |
11017 | ||
976ca316 | 11018 | if (per_objfile->line_header_hash == NULL |
527f3840 | 11019 | && die->tag == DW_TAG_partial_unit) |
2ab95328 | 11020 | { |
976ca316 | 11021 | per_objfile->line_header_hash |
d15acc42 TT |
11022 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
11023 | line_header_eq_voidp, | |
11024 | free_line_header_voidp, | |
11025 | xcalloc, xfree)); | |
527f3840 | 11026 | } |
2ab95328 | 11027 | |
9c541725 | 11028 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11029 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11030 | line_header_local_hash = line_header_hash (&line_header_local); | |
976ca316 | 11031 | if (per_objfile->line_header_hash != NULL) |
527f3840 | 11032 | { |
976ca316 | 11033 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
11034 | &line_header_local, |
11035 | line_header_local_hash, NO_INSERT); | |
11036 | ||
11037 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11038 | is not present in *SLOT (since if there is something in *SLOT then | |
11039 | it will be for a partial_unit). */ | |
11040 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11041 | { |
527f3840 | 11042 | gdb_assert (*slot != NULL); |
9a3c8263 | 11043 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11044 | return; |
dee91e82 | 11045 | } |
2ab95328 | 11046 | } |
527f3840 JK |
11047 | |
11048 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11049 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11050 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11051 | if (lh == NULL) | |
527f3840 | 11052 | return; |
4c8aa72d PA |
11053 | |
11054 | cu->line_header = lh.release (); | |
11055 | cu->line_header_die_owner = die; | |
527f3840 | 11056 | |
976ca316 | 11057 | if (per_objfile->line_header_hash == NULL) |
527f3840 JK |
11058 | slot = NULL; |
11059 | else | |
11060 | { | |
976ca316 | 11061 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
11062 | &line_header_local, |
11063 | line_header_local_hash, INSERT); | |
11064 | gdb_assert (slot != NULL); | |
11065 | } | |
11066 | if (slot != NULL && *slot == NULL) | |
11067 | { | |
11068 | /* This newly decoded line number information unit will be owned | |
11069 | by line_header_hash hash table. */ | |
11070 | *slot = cu->line_header; | |
4c8aa72d | 11071 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11072 | } |
11073 | else | |
11074 | { | |
11075 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11076 | may be already used by multiple CUs. Create only temporary decoded | |
11077 | line_header for this CU - it may happen at most once for each line | |
11078 | number information unit. And if we're not using line_header_hash | |
11079 | then this is what we want as well. */ | |
11080 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11081 | } |
11082 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11083 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11084 | decode_mapping); | |
fff8551c | 11085 | |
2ab95328 TT |
11086 | } |
11087 | ||
95554aad | 11088 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11089 | |
c906108c | 11090 | static void |
e7c27a73 | 11091 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11092 | { |
976ca316 SM |
11093 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
11094 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 11095 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 11096 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11097 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11098 | struct attribute *attr; | |
c906108c | 11099 | struct die_info *child_die; |
e142c38c | 11100 | CORE_ADDR baseaddr; |
6e70227d | 11101 | |
380618d6 | 11102 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 11103 | baseaddr = objfile->text_section_offset (); |
c906108c | 11104 | |
fae299cd | 11105 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11106 | |
11107 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11108 | from finish_block. */ | |
2acceee2 | 11109 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11110 | lowpc = highpc; |
3e29f34a | 11111 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11112 | |
d721ba37 | 11113 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11114 | |
f4b8a18d KW |
11115 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11116 | standardised yet. As a workaround for the language detection we fall | |
11117 | back to the DW_AT_producer string. */ | |
11118 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11119 | cu->language = language_opencl; | |
11120 | ||
3019eac3 DE |
11121 | /* Similar hack for Go. */ |
11122 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11123 | set_cu_language (DW_LANG_Go, cu); | |
11124 | ||
c24bdb02 | 11125 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11126 | |
11127 | /* Decode line number information if present. We do this before | |
11128 | processing child DIEs, so that the line header table is available | |
11129 | for DW_AT_decl_file. */ | |
d721ba37 | 11130 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11131 | |
11132 | /* Process all dies in compilation unit. */ | |
11133 | if (die->child != NULL) | |
11134 | { | |
11135 | child_die = die->child; | |
11136 | while (child_die && child_die->tag) | |
11137 | { | |
11138 | process_die (child_die, cu); | |
436c571c | 11139 | child_die = child_die->sibling; |
3019eac3 DE |
11140 | } |
11141 | } | |
11142 | ||
11143 | /* Decode macro information, if present. Dwarf 2 macro information | |
11144 | refers to information in the line number info statement program | |
11145 | header, so we can only read it if we've read the header | |
11146 | successfully. */ | |
0af92d60 JK |
11147 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11148 | if (attr == NULL) | |
11149 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11150 | if (attr && cu->line_header) |
11151 | { | |
11152 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11153 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11154 | |
43f3e411 | 11155 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11156 | } |
11157 | else | |
11158 | { | |
11159 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11160 | if (attr && cu->line_header) | |
11161 | { | |
11162 | unsigned int macro_offset = DW_UNSND (attr); | |
11163 | ||
43f3e411 | 11164 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11165 | } |
11166 | } | |
3019eac3 DE |
11167 | } |
11168 | ||
c24bdb02 KS |
11169 | void |
11170 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11171 | { |
f4dc4d17 DE |
11172 | struct type_unit_group *tu_group; |
11173 | int first_time; | |
3019eac3 | 11174 | struct attribute *attr; |
9c541725 | 11175 | unsigned int i; |
0186c6a7 | 11176 | struct signatured_type *sig_type; |
3019eac3 | 11177 | |
f4dc4d17 | 11178 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11179 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11180 | |
c24bdb02 | 11181 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11182 | |
f4dc4d17 | 11183 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11184 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11185 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11186 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11187 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11188 | |
11189 | /* If we've already processed this stmt_list there's no real need to | |
11190 | do it again, we could fake it and just recreate the part we need | |
11191 | (file name,index -> symtab mapping). If data shows this optimization | |
11192 | is useful we can do it then. */ | |
8adb8487 TT |
11193 | type_unit_group_unshareable *tug_unshare |
11194 | = per_objfile->get_type_unit_group_unshareable (tu_group); | |
11195 | first_time = tug_unshare->compunit_symtab == NULL; | |
f4dc4d17 DE |
11196 | |
11197 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11198 | debug info. */ | |
fff8551c | 11199 | line_header_up lh; |
f4dc4d17 | 11200 | if (attr != NULL) |
3019eac3 | 11201 | { |
9c541725 | 11202 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 11203 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11204 | } |
11205 | if (lh == NULL) | |
11206 | { | |
11207 | if (first_time) | |
c24bdb02 | 11208 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11209 | else |
11210 | { | |
8adb8487 | 11211 | gdb_assert (tug_unshare->symtabs == NULL); |
c24bdb02 | 11212 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11213 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11214 | m_builder.reset (new struct buildsym_compunit |
11215 | (COMPUNIT_OBJFILE (cust), "", | |
11216 | COMPUNIT_DIRNAME (cust), | |
11217 | compunit_language (cust), | |
11218 | 0, cust)); | |
770479f2 | 11219 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11220 | } |
f4dc4d17 | 11221 | return; |
3019eac3 DE |
11222 | } |
11223 | ||
c24bdb02 KS |
11224 | line_header = lh.release (); |
11225 | line_header_die_owner = die; | |
3019eac3 | 11226 | |
f4dc4d17 DE |
11227 | if (first_time) |
11228 | { | |
c24bdb02 | 11229 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11230 | |
1fd60fc0 DE |
11231 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11232 | still initializing it, and our caller (a few levels up) | |
11233 | process_full_type_unit still needs to know if this is the first | |
11234 | time. */ | |
11235 | ||
8adb8487 | 11236 | tug_unshare->symtabs |
4ac93832 TT |
11237 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, |
11238 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 11239 | |
7ba99d21 AT |
11240 | auto &file_names = line_header->file_names (); |
11241 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11242 | { |
7ba99d21 | 11243 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11244 | dwarf2_start_subfile (this, fe.name, |
11245 | fe.include_dir (line_header)); | |
11246 | buildsym_compunit *b = get_builder (); | |
11247 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11248 | { |
4c8aa72d PA |
11249 | /* NOTE: start_subfile will recognize when it's been |
11250 | passed a file it has already seen. So we can't | |
11251 | assume there's a simple mapping from | |
11252 | cu->line_header->file_names to subfiles, plus | |
11253 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11254 | b->get_current_subfile ()->symtab |
11255 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11256 | } |
11257 | ||
c24bdb02 | 11258 | fe.symtab = b->get_current_subfile ()->symtab; |
8adb8487 | 11259 | tug_unshare->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11260 | } |
11261 | } | |
11262 | else | |
3019eac3 | 11263 | { |
c24bdb02 | 11264 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11265 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11266 | m_builder.reset (new struct buildsym_compunit |
11267 | (COMPUNIT_OBJFILE (cust), "", | |
11268 | COMPUNIT_DIRNAME (cust), | |
11269 | compunit_language (cust), | |
11270 | 0, cust)); | |
770479f2 | 11271 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11272 | |
7ba99d21 AT |
11273 | auto &file_names = line_header->file_names (); |
11274 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11275 | { |
7ba99d21 | 11276 | file_entry &fe = file_names[i]; |
8adb8487 | 11277 | fe.symtab = tug_unshare->symtabs[i]; |
f4dc4d17 | 11278 | } |
3019eac3 DE |
11279 | } |
11280 | ||
f4dc4d17 DE |
11281 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11282 | so they don't have a "real" (so to speak) symtab anyway. | |
11283 | There is later code that will assign the main symtab to all symbols | |
11284 | that don't have one. We need to handle the case of a symbol with a | |
11285 | missing symtab (DW_AT_decl_file) anyway. */ | |
11286 | } | |
3019eac3 | 11287 | |
f4dc4d17 DE |
11288 | /* Process DW_TAG_type_unit. |
11289 | For TUs we want to skip the first top level sibling if it's not the | |
11290 | actual type being defined by this TU. In this case the first top | |
11291 | level sibling is there to provide context only. */ | |
3019eac3 | 11292 | |
f4dc4d17 DE |
11293 | static void |
11294 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11295 | { | |
11296 | struct die_info *child_die; | |
3019eac3 | 11297 | |
f4dc4d17 DE |
11298 | prepare_one_comp_unit (cu, die, language_minimal); |
11299 | ||
11300 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11301 | We do this before processing child DIEs, so that the line header table | |
11302 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11303 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11304 | |
11305 | if (die->child != NULL) | |
11306 | { | |
11307 | child_die = die->child; | |
11308 | while (child_die && child_die->tag) | |
11309 | { | |
11310 | process_die (child_die, cu); | |
436c571c | 11311 | child_die = child_die->sibling; |
f4dc4d17 DE |
11312 | } |
11313 | } | |
3019eac3 DE |
11314 | } |
11315 | \f | |
80626a55 DE |
11316 | /* DWO/DWP files. |
11317 | ||
11318 | http://gcc.gnu.org/wiki/DebugFission | |
11319 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11320 | ||
11321 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11322 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11323 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11324 | |
11325 | static hashval_t | |
11326 | hash_dwo_file (const void *item) | |
11327 | { | |
9a3c8263 | 11328 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11329 | hashval_t hash; |
3019eac3 | 11330 | |
a2ce51a0 DE |
11331 | hash = htab_hash_string (dwo_file->dwo_name); |
11332 | if (dwo_file->comp_dir != NULL) | |
11333 | hash += htab_hash_string (dwo_file->comp_dir); | |
11334 | return hash; | |
3019eac3 DE |
11335 | } |
11336 | ||
11337 | static int | |
11338 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11339 | { | |
9a3c8263 SM |
11340 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11341 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11342 | |
a2ce51a0 DE |
11343 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11344 | return 0; | |
11345 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11346 | return lhs->comp_dir == rhs->comp_dir; | |
11347 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11348 | } |
11349 | ||
11350 | /* Allocate a hash table for DWO files. */ | |
11351 | ||
51ac9db5 | 11352 | static htab_up |
298e9637 | 11353 | allocate_dwo_file_hash_table () |
3019eac3 | 11354 | { |
51ac9db5 SM |
11355 | auto delete_dwo_file = [] (void *item) |
11356 | { | |
11357 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11358 | ||
11359 | delete dwo_file; | |
11360 | }; | |
11361 | ||
bc68fb19 TT |
11362 | return htab_up (htab_create_alloc (41, |
11363 | hash_dwo_file, | |
11364 | eq_dwo_file, | |
11365 | delete_dwo_file, | |
11366 | xcalloc, xfree)); | |
3019eac3 DE |
11367 | } |
11368 | ||
80626a55 DE |
11369 | /* Lookup DWO file DWO_NAME. */ |
11370 | ||
11371 | static void ** | |
976ca316 | 11372 | lookup_dwo_file_slot (dwarf2_per_objfile *per_objfile, |
ed2dc618 SM |
11373 | const char *dwo_name, |
11374 | const char *comp_dir) | |
80626a55 DE |
11375 | { |
11376 | struct dwo_file find_entry; | |
11377 | void **slot; | |
11378 | ||
976ca316 SM |
11379 | if (per_objfile->per_bfd->dwo_files == NULL) |
11380 | per_objfile->per_bfd->dwo_files = allocate_dwo_file_hash_table (); | |
80626a55 | 11381 | |
0ac5b59e DE |
11382 | find_entry.dwo_name = dwo_name; |
11383 | find_entry.comp_dir = comp_dir; | |
976ca316 | 11384 | slot = htab_find_slot (per_objfile->per_bfd->dwo_files.get (), &find_entry, |
51ac9db5 | 11385 | INSERT); |
80626a55 DE |
11386 | |
11387 | return slot; | |
11388 | } | |
11389 | ||
3019eac3 DE |
11390 | static hashval_t |
11391 | hash_dwo_unit (const void *item) | |
11392 | { | |
9a3c8263 | 11393 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11394 | |
11395 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11396 | return dwo_unit->signature; | |
11397 | } | |
11398 | ||
11399 | static int | |
11400 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11401 | { | |
9a3c8263 SM |
11402 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11403 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11404 | |
11405 | /* The signature is assumed to be unique within the DWO file. | |
11406 | So while object file CU dwo_id's always have the value zero, | |
11407 | that's OK, assuming each object file DWO file has only one CU, | |
11408 | and that's the rule for now. */ | |
11409 | return lhs->signature == rhs->signature; | |
11410 | } | |
11411 | ||
11412 | /* Allocate a hash table for DWO CUs,TUs. | |
11413 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11414 | ||
b0b6a987 | 11415 | static htab_up |
298e9637 | 11416 | allocate_dwo_unit_table () |
3019eac3 DE |
11417 | { |
11418 | /* Start out with a pretty small number. | |
11419 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11420 | return htab_up (htab_create_alloc (3, |
11421 | hash_dwo_unit, | |
11422 | eq_dwo_unit, | |
11423 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11424 | } |
11425 | ||
19c3d4c9 | 11426 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11427 | |
11428 | static void | |
19c3d4c9 DE |
11429 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11430 | const gdb_byte *info_ptr, | |
11431 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11432 | struct dwo_file *dwo_file, |
11433 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11434 | { |
11435 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11436 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11437 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11438 | |
a084a2a6 AT |
11439 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11440 | if (!signature.has_value ()) | |
3019eac3 | 11441 | { |
b98664d3 | 11442 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11443 | " its dwo_id [in module %s]"), |
9d8780f0 | 11444 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11445 | return; |
11446 | } | |
11447 | ||
3019eac3 | 11448 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11449 | dwo_unit->signature = *signature; |
8a0459fd | 11450 | dwo_unit->section = section; |
9c541725 | 11451 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11452 | dwo_unit->length = cu->per_cu->length; |
11453 | ||
b4f54984 | 11454 | if (dwarf_read_debug) |
9d8780f0 SM |
11455 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11456 | sect_offset_str (sect_off), | |
9c541725 | 11457 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11458 | } |
11459 | ||
33c5cd75 | 11460 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11461 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11462 | |
33c5cd75 | 11463 | static void |
976ca316 | 11464 | create_cus_hash_table (dwarf2_per_objfile *per_objfile, |
18a8505e | 11465 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11466 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 | 11467 | { |
976ca316 SM |
11468 | struct objfile *objfile = per_objfile->objfile; |
11469 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
d521ce57 | 11470 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11471 | |
96b79293 | 11472 | section.read (objfile); |
33c5cd75 | 11473 | info_ptr = section.buffer; |
3019eac3 DE |
11474 | |
11475 | if (info_ptr == NULL) | |
33c5cd75 | 11476 | return; |
3019eac3 | 11477 | |
b4f54984 | 11478 | if (dwarf_read_debug) |
19c3d4c9 DE |
11479 | { |
11480 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
96b79293 TT |
11481 | section.get_name (), |
11482 | section.get_file_name ()); | |
19c3d4c9 | 11483 | } |
3019eac3 | 11484 | |
33c5cd75 | 11485 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11486 | while (info_ptr < end_ptr) |
11487 | { | |
11488 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11489 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11490 | struct dwo_unit *dwo_unit; |
11491 | void **slot; | |
11492 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11493 | |
11494 | memset (&per_cu, 0, sizeof (per_cu)); | |
1859c670 | 11495 | per_cu.per_bfd = per_bfd; |
3019eac3 | 11496 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11497 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11498 | per_cu.section = §ion; | |
11499 | ||
976ca316 | 11500 | cutu_reader reader (&per_cu, per_objfile, cu, &dwo_file); |
c0ab21c2 TT |
11501 | if (!reader.dummy_p) |
11502 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11503 | &dwo_file, &read_unit); |
33c5cd75 DB |
11504 | info_ptr += per_cu.length; |
11505 | ||
11506 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11507 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11508 | continue; |
3019eac3 | 11509 | |
33c5cd75 | 11510 | if (cus_htab == NULL) |
298e9637 | 11511 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11512 | |
1859c670 | 11513 | dwo_unit = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 11514 | struct dwo_unit); |
c0ab21c2 | 11515 | *dwo_unit = read_unit; |
b0b6a987 | 11516 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11517 | gdb_assert (slot != NULL); |
11518 | if (*slot != NULL) | |
19c3d4c9 | 11519 | { |
33c5cd75 DB |
11520 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11521 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11522 | |
b98664d3 | 11523 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11524 | " the entry at offset %s, signature %s"), |
11525 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11526 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11527 | } |
33c5cd75 | 11528 | *slot = (void *)dwo_unit; |
3019eac3 | 11529 | } |
3019eac3 DE |
11530 | } |
11531 | ||
80626a55 DE |
11532 | /* DWP file .debug_{cu,tu}_index section format: |
11533 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
d2854d8d CT |
11534 | [ref: http://dwarfstd.org/doc/DWARF5.pdf, sect 7.3.5 "DWARF Package Files"] |
11535 | ||
11536 | DWP Versions 1 & 2 are older, pre-standard format versions. The first | |
11537 | officially standard DWP format was published with DWARF v5 and is called | |
11538 | Version 5. There are no versions 3 or 4. | |
80626a55 | 11539 | |
d2415c6c DE |
11540 | DWP Version 1: |
11541 | ||
80626a55 DE |
11542 | Both index sections have the same format, and serve to map a 64-bit |
11543 | signature to a set of section numbers. Each section begins with a header, | |
11544 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11545 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11546 | aligned at 8-byte boundaries in the file. | |
11547 | ||
d2415c6c DE |
11548 | The index section header consists of: |
11549 | ||
11550 | V, 32 bit version number | |
11551 | -, 32 bits unused | |
11552 | N, 32 bit number of compilation units or type units in the index | |
11553 | M, 32 bit number of slots in the hash table | |
80626a55 | 11554 | |
d2415c6c | 11555 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11556 | |
d2415c6c DE |
11557 | The hash table begins at offset 16 in the section, and consists of an array |
11558 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11559 | order of the application binary). Unused slots in the hash table are 0. | |
11560 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11561 | |
d2415c6c DE |
11562 | The parallel table begins immediately after the hash table |
11563 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11564 | array of 32-bit indexes (using the byte order of the application binary), | |
11565 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11566 | table contains a 32-bit index into the pool of section numbers. For unused | |
11567 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11568 | |
73869dc2 DE |
11569 | The pool of section numbers begins immediately following the hash table |
11570 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11571 | section numbers consists of an array of 32-bit words (using the byte order | |
11572 | of the application binary). Each item in the array is indexed starting | |
11573 | from 0. The hash table entry provides the index of the first section | |
11574 | number in the set. Additional section numbers in the set follow, and the | |
11575 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11576 | ||
11577 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11578 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11579 | be the second entry. Other members of the set may follow in any order. | |
11580 | ||
11581 | --- | |
11582 | ||
d2854d8d | 11583 | DWP Versions 2 and 5: |
73869dc2 | 11584 | |
d2854d8d | 11585 | DWP Versions 2 and 5 combine all the .debug_info, etc. sections into one, |
73869dc2 DE |
11586 | and the entries in the index tables are now offsets into these sections. |
11587 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11588 | section. | |
11589 | ||
11590 | Index Section Contents: | |
11591 | Header | |
11592 | Hash Table of Signatures dwp_hash_table.hash_table | |
11593 | Parallel Table of Indices dwp_hash_table.unit_table | |
d2854d8d CT |
11594 | Table of Section Offsets dwp_hash_table.{v2|v5}.{section_ids,offsets} |
11595 | Table of Section Sizes dwp_hash_table.{v2|v5}.sizes | |
73869dc2 DE |
11596 | |
11597 | The index section header consists of: | |
11598 | ||
11599 | V, 32 bit version number | |
11600 | L, 32 bit number of columns in the table of section offsets | |
11601 | N, 32 bit number of compilation units or type units in the index | |
11602 | M, 32 bit number of slots in the hash table | |
11603 | ||
11604 | Numbers are recorded using the byte order of the application binary. | |
11605 | ||
11606 | The hash table has the same format as version 1. | |
11607 | The parallel table of indices has the same format as version 1, | |
11608 | except that the entries are origin-1 indices into the table of sections | |
11609 | offsets and the table of section sizes. | |
11610 | ||
11611 | The table of offsets begins immediately following the parallel table | |
11612 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11613 | a two-dimensional array of 32-bit words (using the byte order of the | |
11614 | application binary), with L columns and N+1 rows, in row-major order. | |
11615 | Each row in the array is indexed starting from 0. The first row provides | |
11616 | a key to the remaining rows: each column in this row provides an identifier | |
11617 | for a debug section, and the offsets in the same column of subsequent rows | |
d2854d8d | 11618 | refer to that section. The section identifiers for Version 2 are: |
73869dc2 DE |
11619 | |
11620 | DW_SECT_INFO 1 .debug_info.dwo | |
11621 | DW_SECT_TYPES 2 .debug_types.dwo | |
11622 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11623 | DW_SECT_LINE 4 .debug_line.dwo | |
11624 | DW_SECT_LOC 5 .debug_loc.dwo | |
11625 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11626 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11627 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11628 | ||
d2854d8d CT |
11629 | The section identifiers for Version 5 are: |
11630 | ||
11631 | DW_SECT_INFO_V5 1 .debug_info.dwo | |
11632 | DW_SECT_RESERVED_V5 2 -- | |
11633 | DW_SECT_ABBREV_V5 3 .debug_abbrev.dwo | |
11634 | DW_SECT_LINE_V5 4 .debug_line.dwo | |
11635 | DW_SECT_LOCLISTS_V5 5 .debug_loclists.dwo | |
11636 | DW_SECT_STR_OFFSETS_V5 6 .debug_str_offsets.dwo | |
11637 | DW_SECT_MACRO_V5 7 .debug_macro.dwo | |
11638 | DW_SECT_RNGLISTS_V5 8 .debug_rnglists.dwo | |
11639 | ||
73869dc2 DE |
11640 | The offsets provided by the CU and TU index sections are the base offsets |
11641 | for the contributions made by each CU or TU to the corresponding section | |
11642 | in the package file. Each CU and TU header contains an abbrev_offset | |
11643 | field, used to find the abbreviations table for that CU or TU within the | |
11644 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11645 | be interpreted as relative to the base offset given in the index section. | |
11646 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11647 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11648 | and offsets into other debug sections obtained from DWARF attributes should | |
11649 | also be interpreted as relative to the corresponding base offset. | |
11650 | ||
11651 | The table of sizes begins immediately following the table of offsets. | |
11652 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11653 | with L columns and N rows, in row-major order. Each row in the array is | |
11654 | indexed starting from 1 (row 0 is shared by the two tables). | |
11655 | ||
11656 | --- | |
11657 | ||
11658 | Hash table lookup is handled the same in version 1 and 2: | |
11659 | ||
11660 | We assume that N and M will not exceed 2^32 - 1. | |
11661 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11662 | ||
d2415c6c DE |
11663 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11664 | in the hash table is located as follows: | |
80626a55 | 11665 | |
d2415c6c DE |
11666 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11667 | the low-order k bits all set to 1. | |
80626a55 | 11668 | |
d2415c6c | 11669 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11670 | |
d2415c6c DE |
11671 | 3) If the hash table entry at index H matches the signature, use that |
11672 | entry. If the hash table entry at index H is unused (all zeroes), | |
11673 | terminate the search: the signature is not present in the table. | |
80626a55 | 11674 | |
d2415c6c | 11675 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11676 | |
d2415c6c | 11677 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11678 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11679 | |
11680 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11681 | .debug_{info,types}.dwo in DWP_FILE. | |
11682 | Returns NULL if there isn't one. | |
11683 | Note: This function processes DWP files only, not DWO files. */ | |
11684 | ||
11685 | static struct dwp_hash_table * | |
976ca316 | 11686 | create_dwp_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11687 | struct dwp_file *dwp_file, int is_debug_types) |
80626a55 | 11688 | { |
976ca316 | 11689 | struct objfile *objfile = per_objfile->objfile; |
400174b1 | 11690 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11691 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11692 | struct dwarf2_section_info *index; |
73869dc2 | 11693 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11694 | struct dwp_hash_table *htab; |
11695 | ||
11696 | if (is_debug_types) | |
11697 | index = &dwp_file->sections.tu_index; | |
11698 | else | |
11699 | index = &dwp_file->sections.cu_index; | |
11700 | ||
96b79293 | 11701 | if (index->empty ()) |
80626a55 | 11702 | return NULL; |
96b79293 | 11703 | index->read (objfile); |
80626a55 DE |
11704 | |
11705 | index_ptr = index->buffer; | |
11706 | index_end = index_ptr + index->size; | |
11707 | ||
d2854d8d CT |
11708 | /* For Version 5, the version is really 2 bytes of data & 2 bytes of padding. |
11709 | For now it's safe to just read 4 bytes (particularly as it's difficult to | |
11710 | tell if you're dealing with Version 5 before you've read the version). */ | |
80626a55 | 11711 | version = read_4_bytes (dbfd, index_ptr); |
73869dc2 | 11712 | index_ptr += 4; |
d2854d8d | 11713 | if (version == 2 || version == 5) |
73869dc2 DE |
11714 | nr_columns = read_4_bytes (dbfd, index_ptr); |
11715 | else | |
11716 | nr_columns = 0; | |
11717 | index_ptr += 4; | |
80626a55 DE |
11718 | nr_units = read_4_bytes (dbfd, index_ptr); |
11719 | index_ptr += 4; | |
11720 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11721 | index_ptr += 4; | |
11722 | ||
d2854d8d | 11723 | if (version != 1 && version != 2 && version != 5) |
80626a55 | 11724 | { |
21aa081e | 11725 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11726 | " [in module %s]"), |
21aa081e | 11727 | pulongest (version), dwp_file->name); |
80626a55 DE |
11728 | } |
11729 | if (nr_slots != (nr_slots & -nr_slots)) | |
11730 | { | |
21aa081e | 11731 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11732 | " is not power of 2 [in module %s]"), |
21aa081e | 11733 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11734 | } |
11735 | ||
976ca316 | 11736 | htab = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwp_hash_table); |
73869dc2 DE |
11737 | htab->version = version; |
11738 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11739 | htab->nr_units = nr_units; |
11740 | htab->nr_slots = nr_slots; | |
11741 | htab->hash_table = index_ptr; | |
11742 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11743 | |
11744 | /* Exit early if the table is empty. */ | |
11745 | if (nr_slots == 0 || nr_units == 0 | |
d2854d8d CT |
11746 | || (version == 2 && nr_columns == 0) |
11747 | || (version == 5 && nr_columns == 0)) | |
73869dc2 DE |
11748 | { |
11749 | /* All must be zero. */ | |
11750 | if (nr_slots != 0 || nr_units != 0 | |
d2854d8d CT |
11751 | || (version == 2 && nr_columns != 0) |
11752 | || (version == 5 && nr_columns != 0)) | |
73869dc2 | 11753 | { |
b98664d3 | 11754 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11755 | " all zero [in modules %s]"), |
11756 | dwp_file->name); | |
11757 | } | |
11758 | return htab; | |
11759 | } | |
11760 | ||
11761 | if (version == 1) | |
11762 | { | |
11763 | htab->section_pool.v1.indices = | |
11764 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11765 | /* It's harder to decide whether the section is too small in v1. | |
11766 | V1 is deprecated anyway so we punt. */ | |
11767 | } | |
d2854d8d | 11768 | else if (version == 2) |
73869dc2 DE |
11769 | { |
11770 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11771 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11772 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11773 | /* Reverse map for error checking. */ |
11774 | int ids_seen[DW_SECT_MAX + 1]; | |
11775 | int i; | |
11776 | ||
11777 | if (nr_columns < 2) | |
11778 | { | |
11779 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11780 | " in section table [in module %s]"), | |
11781 | dwp_file->name); | |
11782 | } | |
11783 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11784 | { | |
11785 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11786 | " in section table [in module %s]"), | |
11787 | dwp_file->name); | |
11788 | } | |
04fd5eed GB |
11789 | memset (ids, 255, sizeof_ids); |
11790 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11791 | for (i = 0; i < nr_columns; ++i) |
11792 | { | |
11793 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11794 | ||
11795 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11796 | { | |
11797 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11798 | " in section table [in module %s]"), | |
11799 | id, dwp_file->name); | |
11800 | } | |
11801 | if (ids_seen[id] != -1) | |
11802 | { | |
11803 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11804 | " id %d in section table [in module %s]"), | |
11805 | id, dwp_file->name); | |
11806 | } | |
11807 | ids_seen[id] = i; | |
11808 | ids[i] = id; | |
11809 | } | |
11810 | /* Must have exactly one info or types section. */ | |
11811 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11812 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11813 | != 1) | |
11814 | { | |
11815 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11816 | " DWO info/types section [in module %s]"), | |
11817 | dwp_file->name); | |
11818 | } | |
11819 | /* Must have an abbrev section. */ | |
11820 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11821 | { | |
11822 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11823 | " section [in module %s]"), | |
11824 | dwp_file->name); | |
11825 | } | |
11826 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11827 | htab->section_pool.v2.sizes = | |
11828 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11829 | * nr_units * nr_columns); | |
11830 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11831 | * nr_units * nr_columns)) | |
11832 | > index_end) | |
11833 | { | |
11834 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11835 | " [in module %s]"), | |
11836 | dwp_file->name); | |
11837 | } | |
11838 | } | |
d2854d8d CT |
11839 | else /* version == 5 */ |
11840 | { | |
11841 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11842 | int *ids = htab->section_pool.v5.section_ids; | |
11843 | size_t sizeof_ids = sizeof (htab->section_pool.v5.section_ids); | |
11844 | /* Reverse map for error checking. */ | |
11845 | int ids_seen[DW_SECT_MAX_V5 + 1]; | |
11846 | ||
11847 | if (nr_columns < 2) | |
11848 | { | |
11849 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11850 | " in section table [in module %s]"), | |
11851 | dwp_file->name); | |
11852 | } | |
11853 | if (nr_columns > MAX_NR_V5_DWO_SECTIONS) | |
11854 | { | |
11855 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11856 | " in section table [in module %s]"), | |
11857 | dwp_file->name); | |
11858 | } | |
11859 | memset (ids, 255, sizeof_ids); | |
11860 | memset (ids_seen, 255, sizeof (ids_seen)); | |
11861 | for (int i = 0; i < nr_columns; ++i) | |
11862 | { | |
11863 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11864 | ||
11865 | if (id < DW_SECT_MIN || id > DW_SECT_MAX_V5) | |
11866 | { | |
11867 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11868 | " in section table [in module %s]"), | |
11869 | id, dwp_file->name); | |
11870 | } | |
11871 | if (ids_seen[id] != -1) | |
11872 | { | |
11873 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11874 | " id %d in section table [in module %s]"), | |
11875 | id, dwp_file->name); | |
11876 | } | |
11877 | ids_seen[id] = i; | |
11878 | ids[i] = id; | |
11879 | } | |
11880 | /* Must have seen an info section. */ | |
11881 | if (ids_seen[DW_SECT_INFO_V5] == -1) | |
11882 | { | |
11883 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11884 | " DWO info/types section [in module %s]"), | |
11885 | dwp_file->name); | |
11886 | } | |
11887 | /* Must have an abbrev section. */ | |
11888 | if (ids_seen[DW_SECT_ABBREV_V5] == -1) | |
11889 | { | |
11890 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11891 | " section [in module %s]"), | |
11892 | dwp_file->name); | |
11893 | } | |
11894 | htab->section_pool.v5.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11895 | htab->section_pool.v5.sizes | |
11896 | = htab->section_pool.v5.offsets + (sizeof (uint32_t) | |
11897 | * nr_units * nr_columns); | |
11898 | if ((htab->section_pool.v5.sizes + (sizeof (uint32_t) | |
11899 | * nr_units * nr_columns)) | |
11900 | > index_end) | |
11901 | { | |
11902 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11903 | " [in module %s]"), | |
11904 | dwp_file->name); | |
11905 | } | |
11906 | } | |
80626a55 DE |
11907 | |
11908 | return htab; | |
11909 | } | |
11910 | ||
11911 | /* Update SECTIONS with the data from SECTP. | |
11912 | ||
5bb6e9dd TT |
11913 | This function is like the other "locate" section routines, but in |
11914 | this context the sections to read comes from the DWP V1 hash table, | |
11915 | not the full ELF section table. | |
80626a55 DE |
11916 | |
11917 | The result is non-zero for success, or zero if an error was found. */ | |
11918 | ||
11919 | static int | |
73869dc2 DE |
11920 | locate_v1_virtual_dwo_sections (asection *sectp, |
11921 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11922 | { |
11923 | const struct dwop_section_names *names = &dwop_section_names; | |
11924 | ||
11925 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
11926 | { | |
11927 | /* There can be only one. */ | |
049412e3 | 11928 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11929 | return 0; |
049412e3 | 11930 | sections->abbrev.s.section = sectp; |
fd361982 | 11931 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
11932 | } |
11933 | else if (section_is_p (sectp->name, &names->info_dwo) | |
11934 | || section_is_p (sectp->name, &names->types_dwo)) | |
11935 | { | |
11936 | /* There can be only one. */ | |
049412e3 | 11937 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11938 | return 0; |
049412e3 | 11939 | sections->info_or_types.s.section = sectp; |
fd361982 | 11940 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
11941 | } |
11942 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
11943 | { | |
11944 | /* There can be only one. */ | |
049412e3 | 11945 | if (sections->line.s.section != NULL) |
80626a55 | 11946 | return 0; |
049412e3 | 11947 | sections->line.s.section = sectp; |
fd361982 | 11948 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
11949 | } |
11950 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
11951 | { | |
11952 | /* There can be only one. */ | |
049412e3 | 11953 | if (sections->loc.s.section != NULL) |
80626a55 | 11954 | return 0; |
049412e3 | 11955 | sections->loc.s.section = sectp; |
fd361982 | 11956 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
11957 | } |
11958 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
11959 | { | |
11960 | /* There can be only one. */ | |
049412e3 | 11961 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11962 | return 0; |
049412e3 | 11963 | sections->macinfo.s.section = sectp; |
fd361982 | 11964 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
11965 | } |
11966 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
11967 | { | |
11968 | /* There can be only one. */ | |
049412e3 | 11969 | if (sections->macro.s.section != NULL) |
80626a55 | 11970 | return 0; |
049412e3 | 11971 | sections->macro.s.section = sectp; |
fd361982 | 11972 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
11973 | } |
11974 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
11975 | { | |
11976 | /* There can be only one. */ | |
049412e3 | 11977 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11978 | return 0; |
049412e3 | 11979 | sections->str_offsets.s.section = sectp; |
fd361982 | 11980 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11981 | } |
11982 | else | |
11983 | { | |
11984 | /* No other kind of section is valid. */ | |
11985 | return 0; | |
11986 | } | |
11987 | ||
11988 | return 1; | |
11989 | } | |
11990 | ||
73869dc2 DE |
11991 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
11992 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11993 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11994 | This is for DWP version 1 files. */ | |
80626a55 DE |
11995 | |
11996 | static struct dwo_unit * | |
976ca316 | 11997 | create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11998 | struct dwp_file *dwp_file, |
73869dc2 DE |
11999 | uint32_t unit_index, |
12000 | const char *comp_dir, | |
12001 | ULONGEST signature, int is_debug_types) | |
80626a55 | 12002 | { |
73869dc2 DE |
12003 | const struct dwp_hash_table *dwp_htab = |
12004 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12005 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
12006 | const char *kind = is_debug_types ? "TU" : "CU"; |
12007 | struct dwo_file *dwo_file; | |
12008 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12009 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12010 | void **dwo_file_slot; |
80626a55 DE |
12011 | int i; |
12012 | ||
73869dc2 DE |
12013 | gdb_assert (dwp_file->version == 1); |
12014 | ||
b4f54984 | 12015 | if (dwarf_read_debug) |
80626a55 | 12016 | { |
73869dc2 | 12017 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 12018 | kind, |
73869dc2 | 12019 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
12020 | dwp_file->name); |
12021 | } | |
12022 | ||
19ac8c2e | 12023 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12024 | Put a limit on the number of sections we look for so that bad data |
12025 | doesn't cause us to loop forever. */ | |
12026 | ||
73869dc2 | 12027 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12028 | (1 /* .debug_info or .debug_types */ \ |
12029 | + 1 /* .debug_abbrev */ \ | |
12030 | + 1 /* .debug_line */ \ | |
12031 | + 1 /* .debug_loc */ \ | |
12032 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12033 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12034 | + 1 /* trailing zero */) |
12035 | ||
12036 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12037 | |
73869dc2 | 12038 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12039 | { |
12040 | asection *sectp; | |
12041 | uint32_t section_nr = | |
12042 | read_4_bytes (dbfd, | |
73869dc2 DE |
12043 | dwp_htab->section_pool.v1.indices |
12044 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12045 | |
12046 | if (section_nr == 0) | |
12047 | break; | |
12048 | if (section_nr >= dwp_file->num_sections) | |
12049 | { | |
12050 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12051 | " [in module %s]"), | |
12052 | dwp_file->name); | |
12053 | } | |
12054 | ||
12055 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12056 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12057 | { |
12058 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12059 | " [in module %s]"), | |
12060 | dwp_file->name); | |
12061 | } | |
12062 | } | |
12063 | ||
12064 | if (i < 2 | |
96b79293 TT |
12065 | || sections.info_or_types.empty () |
12066 | || sections.abbrev.empty ()) | |
80626a55 DE |
12067 | { |
12068 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12069 | " [in module %s]"), | |
12070 | dwp_file->name); | |
12071 | } | |
73869dc2 | 12072 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12073 | { |
12074 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12075 | " [in module %s]"), | |
12076 | dwp_file->name); | |
12077 | } | |
12078 | ||
12079 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12080 | have dwo_unit "live" in that. At least for now. | |
12081 | ||
12082 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12083 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12084 | file, we can combine them back into a virtual DWO file to save space |
12085 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12086 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12087 | ||
791afaa2 TT |
12088 | std::string virtual_dwo_name = |
12089 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
12090 | sections.abbrev.get_id (), |
12091 | sections.line.get_id (), | |
12092 | sections.loc.get_id (), | |
12093 | sections.str_offsets.get_id ()); | |
80626a55 | 12094 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12095 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12096 | comp_dir); |
80626a55 DE |
12097 | /* Create one if necessary. */ |
12098 | if (*dwo_file_slot == NULL) | |
12099 | { | |
b4f54984 | 12100 | if (dwarf_read_debug) |
80626a55 DE |
12101 | { |
12102 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12103 | virtual_dwo_name.c_str ()); |
80626a55 | 12104 | } |
51ac9db5 | 12105 | dwo_file = new struct dwo_file; |
976ca316 | 12106 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
0ac5b59e | 12107 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12108 | dwo_file->sections.abbrev = sections.abbrev; |
12109 | dwo_file->sections.line = sections.line; | |
12110 | dwo_file->sections.loc = sections.loc; | |
12111 | dwo_file->sections.macinfo = sections.macinfo; | |
12112 | dwo_file->sections.macro = sections.macro; | |
12113 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12114 | /* The "str" section is global to the entire DWP file. */ | |
12115 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12116 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12117 | there's no need to record it in dwo_file. |
12118 | Also, we can't simply record type sections in dwo_file because | |
12119 | we record a pointer into the vector in dwo_unit. As we collect more | |
12120 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12121 | for it, invalidating all copies of pointers into the previous |
12122 | contents. */ | |
80626a55 DE |
12123 | *dwo_file_slot = dwo_file; |
12124 | } | |
12125 | else | |
12126 | { | |
b4f54984 | 12127 | if (dwarf_read_debug) |
80626a55 DE |
12128 | { |
12129 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12130 | virtual_dwo_name.c_str ()); |
80626a55 | 12131 | } |
9a3c8263 | 12132 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12133 | } |
80626a55 | 12134 | |
976ca316 | 12135 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
80626a55 DE |
12136 | dwo_unit->dwo_file = dwo_file; |
12137 | dwo_unit->signature = signature; | |
8d749320 | 12138 | dwo_unit->section = |
976ca316 | 12139 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
8a0459fd | 12140 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12141 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12142 | |
12143 | return dwo_unit; | |
12144 | } | |
12145 | ||
d2854d8d CT |
12146 | /* Subroutine of create_dwo_unit_in_dwp_v2 and create_dwo_unit_in_dwp_v5 to |
12147 | simplify them. Given a pointer to the containing section SECTION, and | |
12148 | OFFSET,SIZE of the piece within that section used by a TU/CU, return a | |
12149 | virtual section of just that piece. */ | |
73869dc2 DE |
12150 | |
12151 | static struct dwarf2_section_info | |
d2854d8d CT |
12152 | create_dwp_v2_or_v5_section (dwarf2_per_objfile *per_objfile, |
12153 | struct dwarf2_section_info *section, | |
12154 | bfd_size_type offset, bfd_size_type size) | |
73869dc2 DE |
12155 | { |
12156 | struct dwarf2_section_info result; | |
12157 | asection *sectp; | |
12158 | ||
12159 | gdb_assert (section != NULL); | |
12160 | gdb_assert (!section->is_virtual); | |
12161 | ||
12162 | memset (&result, 0, sizeof (result)); | |
12163 | result.s.containing_section = section; | |
dc4ccb6f | 12164 | result.is_virtual = true; |
73869dc2 DE |
12165 | |
12166 | if (size == 0) | |
12167 | return result; | |
12168 | ||
96b79293 | 12169 | sectp = section->get_bfd_section (); |
73869dc2 DE |
12170 | |
12171 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12172 | bounds of the real section. This is a pretty-rare event, so just | |
12173 | flag an error (easier) instead of a warning and trying to cope. */ | |
12174 | if (sectp == NULL | |
fd361982 | 12175 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 12176 | { |
d2854d8d | 12177 | error (_("Dwarf Error: Bad DWP V2 or V5 section info, doesn't fit" |
73869dc2 | 12178 | " in section %s [in module %s]"), |
fd361982 | 12179 | sectp ? bfd_section_name (sectp) : "<unknown>", |
976ca316 | 12180 | objfile_name (per_objfile->objfile)); |
73869dc2 DE |
12181 | } |
12182 | ||
12183 | result.virtual_offset = offset; | |
12184 | result.size = size; | |
12185 | return result; | |
12186 | } | |
12187 | ||
12188 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12189 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12190 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12191 | This is for DWP version 2 files. */ | |
12192 | ||
12193 | static struct dwo_unit * | |
976ca316 | 12194 | create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12195 | struct dwp_file *dwp_file, |
73869dc2 DE |
12196 | uint32_t unit_index, |
12197 | const char *comp_dir, | |
12198 | ULONGEST signature, int is_debug_types) | |
12199 | { | |
73869dc2 DE |
12200 | const struct dwp_hash_table *dwp_htab = |
12201 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12202 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12203 | const char *kind = is_debug_types ? "TU" : "CU"; |
12204 | struct dwo_file *dwo_file; | |
12205 | struct dwo_unit *dwo_unit; | |
d2854d8d | 12206 | struct virtual_v2_or_v5_dwo_sections sections; |
73869dc2 | 12207 | void **dwo_file_slot; |
73869dc2 DE |
12208 | int i; |
12209 | ||
12210 | gdb_assert (dwp_file->version == 2); | |
12211 | ||
b4f54984 | 12212 | if (dwarf_read_debug) |
73869dc2 DE |
12213 | { |
12214 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12215 | kind, | |
12216 | pulongest (unit_index), hex_string (signature), | |
12217 | dwp_file->name); | |
12218 | } | |
12219 | ||
12220 | /* Fetch the section offsets of this DWO unit. */ | |
12221 | ||
12222 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12223 | |
12224 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12225 | { | |
12226 | uint32_t offset = read_4_bytes (dbfd, | |
12227 | dwp_htab->section_pool.v2.offsets | |
12228 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12229 | + i) | |
12230 | * sizeof (uint32_t))); | |
12231 | uint32_t size = read_4_bytes (dbfd, | |
12232 | dwp_htab->section_pool.v2.sizes | |
12233 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12234 | + i) | |
12235 | * sizeof (uint32_t))); | |
12236 | ||
12237 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12238 | { | |
12239 | case DW_SECT_INFO: | |
12240 | case DW_SECT_TYPES: | |
12241 | sections.info_or_types_offset = offset; | |
12242 | sections.info_or_types_size = size; | |
12243 | break; | |
12244 | case DW_SECT_ABBREV: | |
12245 | sections.abbrev_offset = offset; | |
12246 | sections.abbrev_size = size; | |
12247 | break; | |
12248 | case DW_SECT_LINE: | |
12249 | sections.line_offset = offset; | |
12250 | sections.line_size = size; | |
12251 | break; | |
12252 | case DW_SECT_LOC: | |
12253 | sections.loc_offset = offset; | |
12254 | sections.loc_size = size; | |
12255 | break; | |
12256 | case DW_SECT_STR_OFFSETS: | |
12257 | sections.str_offsets_offset = offset; | |
12258 | sections.str_offsets_size = size; | |
12259 | break; | |
12260 | case DW_SECT_MACINFO: | |
12261 | sections.macinfo_offset = offset; | |
12262 | sections.macinfo_size = size; | |
12263 | break; | |
12264 | case DW_SECT_MACRO: | |
12265 | sections.macro_offset = offset; | |
12266 | sections.macro_size = size; | |
12267 | break; | |
12268 | } | |
12269 | } | |
12270 | ||
12271 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12272 | have dwo_unit "live" in that. At least for now. | |
12273 | ||
12274 | The DWP file can be made up of a random collection of CUs and TUs. | |
12275 | However, for each CU + set of TUs that came from the same original DWO | |
12276 | file, we can combine them back into a virtual DWO file to save space | |
12277 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12278 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12279 | ||
791afaa2 TT |
12280 | std::string virtual_dwo_name = |
12281 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12282 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12283 | (long) (sections.line_size ? sections.line_offset : 0), | |
12284 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12285 | (long) (sections.str_offsets_size | |
12286 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12287 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12288 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12289 | comp_dir); |
73869dc2 DE |
12290 | /* Create one if necessary. */ |
12291 | if (*dwo_file_slot == NULL) | |
12292 | { | |
b4f54984 | 12293 | if (dwarf_read_debug) |
73869dc2 DE |
12294 | { |
12295 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12296 | virtual_dwo_name.c_str ()); |
73869dc2 | 12297 | } |
51ac9db5 | 12298 | dwo_file = new struct dwo_file; |
976ca316 | 12299 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
73869dc2 DE |
12300 | dwo_file->comp_dir = comp_dir; |
12301 | dwo_file->sections.abbrev = | |
d2854d8d CT |
12302 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.abbrev, |
12303 | sections.abbrev_offset, | |
12304 | sections.abbrev_size); | |
73869dc2 | 12305 | dwo_file->sections.line = |
d2854d8d CT |
12306 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.line, |
12307 | sections.line_offset, | |
12308 | sections.line_size); | |
73869dc2 | 12309 | dwo_file->sections.loc = |
d2854d8d CT |
12310 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.loc, |
12311 | sections.loc_offset, sections.loc_size); | |
73869dc2 | 12312 | dwo_file->sections.macinfo = |
d2854d8d CT |
12313 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macinfo, |
12314 | sections.macinfo_offset, | |
12315 | sections.macinfo_size); | |
73869dc2 | 12316 | dwo_file->sections.macro = |
d2854d8d CT |
12317 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macro, |
12318 | sections.macro_offset, | |
12319 | sections.macro_size); | |
73869dc2 | 12320 | dwo_file->sections.str_offsets = |
d2854d8d CT |
12321 | create_dwp_v2_or_v5_section (per_objfile, |
12322 | &dwp_file->sections.str_offsets, | |
12323 | sections.str_offsets_offset, | |
12324 | sections.str_offsets_size); | |
73869dc2 DE |
12325 | /* The "str" section is global to the entire DWP file. */ |
12326 | dwo_file->sections.str = dwp_file->sections.str; | |
12327 | /* The info or types section is assigned below to dwo_unit, | |
12328 | there's no need to record it in dwo_file. | |
12329 | Also, we can't simply record type sections in dwo_file because | |
12330 | we record a pointer into the vector in dwo_unit. As we collect more | |
12331 | types we'll grow the vector and eventually have to reallocate space | |
12332 | for it, invalidating all copies of pointers into the previous | |
12333 | contents. */ | |
12334 | *dwo_file_slot = dwo_file; | |
12335 | } | |
12336 | else | |
12337 | { | |
b4f54984 | 12338 | if (dwarf_read_debug) |
73869dc2 DE |
12339 | { |
12340 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12341 | virtual_dwo_name.c_str ()); |
73869dc2 | 12342 | } |
9a3c8263 | 12343 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12344 | } |
73869dc2 | 12345 | |
976ca316 | 12346 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
73869dc2 DE |
12347 | dwo_unit->dwo_file = dwo_file; |
12348 | dwo_unit->signature = signature; | |
8d749320 | 12349 | dwo_unit->section = |
976ca316 | 12350 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
d2854d8d CT |
12351 | *dwo_unit->section = create_dwp_v2_or_v5_section |
12352 | (per_objfile, | |
12353 | is_debug_types | |
12354 | ? &dwp_file->sections.types | |
12355 | : &dwp_file->sections.info, | |
12356 | sections.info_or_types_offset, | |
12357 | sections.info_or_types_size); | |
12358 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12359 | ||
12360 | return dwo_unit; | |
12361 | } | |
12362 | ||
12363 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12364 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12365 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12366 | This is for DWP version 5 files. */ | |
12367 | ||
12368 | static struct dwo_unit * | |
12369 | create_dwo_unit_in_dwp_v5 (dwarf2_per_objfile *per_objfile, | |
12370 | struct dwp_file *dwp_file, | |
12371 | uint32_t unit_index, | |
12372 | const char *comp_dir, | |
12373 | ULONGEST signature, int is_debug_types) | |
12374 | { | |
12375 | const struct dwp_hash_table *dwp_htab | |
12376 | = is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12377 | bfd *dbfd = dwp_file->dbfd.get (); | |
12378 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12379 | struct dwo_file *dwo_file; | |
12380 | struct dwo_unit *dwo_unit; | |
12381 | struct virtual_v2_or_v5_dwo_sections sections {}; | |
12382 | void **dwo_file_slot; | |
12383 | ||
12384 | gdb_assert (dwp_file->version == 5); | |
12385 | ||
12386 | if (dwarf_read_debug) | |
12387 | { | |
12388 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V5 file: %s\n", | |
12389 | kind, | |
12390 | pulongest (unit_index), hex_string (signature), | |
12391 | dwp_file->name); | |
12392 | } | |
12393 | ||
12394 | /* Fetch the section offsets of this DWO unit. */ | |
12395 | ||
12396 | /* memset (§ions, 0, sizeof (sections)); */ | |
12397 | ||
12398 | for (int i = 0; i < dwp_htab->nr_columns; ++i) | |
12399 | { | |
12400 | uint32_t offset = read_4_bytes (dbfd, | |
12401 | dwp_htab->section_pool.v5.offsets | |
12402 | + (((unit_index - 1) | |
12403 | * dwp_htab->nr_columns | |
12404 | + i) | |
12405 | * sizeof (uint32_t))); | |
12406 | uint32_t size = read_4_bytes (dbfd, | |
12407 | dwp_htab->section_pool.v5.sizes | |
12408 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12409 | + i) | |
12410 | * sizeof (uint32_t))); | |
12411 | ||
12412 | switch (dwp_htab->section_pool.v5.section_ids[i]) | |
12413 | { | |
12414 | case DW_SECT_ABBREV_V5: | |
12415 | sections.abbrev_offset = offset; | |
12416 | sections.abbrev_size = size; | |
12417 | break; | |
12418 | case DW_SECT_INFO_V5: | |
12419 | sections.info_or_types_offset = offset; | |
12420 | sections.info_or_types_size = size; | |
12421 | break; | |
12422 | case DW_SECT_LINE_V5: | |
12423 | sections.line_offset = offset; | |
12424 | sections.line_size = size; | |
12425 | break; | |
12426 | case DW_SECT_LOCLISTS_V5: | |
12427 | sections.loclists_offset = offset; | |
12428 | sections.loclists_size = size; | |
12429 | break; | |
12430 | case DW_SECT_MACRO_V5: | |
12431 | sections.macro_offset = offset; | |
12432 | sections.macro_size = size; | |
12433 | break; | |
12434 | case DW_SECT_RNGLISTS_V5: | |
12435 | sections.rnglists_offset = offset; | |
12436 | sections.rnglists_size = size; | |
12437 | break; | |
12438 | case DW_SECT_STR_OFFSETS_V5: | |
12439 | sections.str_offsets_offset = offset; | |
12440 | sections.str_offsets_size = size; | |
12441 | break; | |
12442 | case DW_SECT_RESERVED_V5: | |
12443 | default: | |
12444 | break; | |
12445 | } | |
12446 | } | |
12447 | ||
12448 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12449 | have dwo_unit "live" in that. At least for now. | |
12450 | ||
12451 | The DWP file can be made up of a random collection of CUs and TUs. | |
12452 | However, for each CU + set of TUs that came from the same original DWO | |
12453 | file, we can combine them back into a virtual DWO file to save space | |
12454 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12455 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12456 | ||
12457 | std::string virtual_dwo_name = | |
12458 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld-%ld-%ld", | |
12459 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12460 | (long) (sections.line_size ? sections.line_offset : 0), | |
12461 | (long) (sections.loclists_size ? sections.loclists_offset : 0), | |
12462 | (long) (sections.str_offsets_size | |
12463 | ? sections.str_offsets_offset : 0), | |
12464 | (long) (sections.macro_size ? sections.macro_offset : 0), | |
12465 | (long) (sections.rnglists_size ? sections.rnglists_offset: 0)); | |
12466 | /* Can we use an existing virtual DWO file? */ | |
12467 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, | |
12468 | virtual_dwo_name.c_str (), | |
12469 | comp_dir); | |
12470 | /* Create one if necessary. */ | |
12471 | if (*dwo_file_slot == NULL) | |
12472 | { | |
12473 | if (dwarf_read_debug) | |
12474 | { | |
12475 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
12476 | virtual_dwo_name.c_str ()); | |
12477 | } | |
12478 | dwo_file = new struct dwo_file; | |
12479 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); | |
12480 | dwo_file->comp_dir = comp_dir; | |
12481 | dwo_file->sections.abbrev = | |
12482 | create_dwp_v2_or_v5_section (per_objfile, | |
12483 | &dwp_file->sections.abbrev, | |
12484 | sections.abbrev_offset, | |
12485 | sections.abbrev_size); | |
12486 | dwo_file->sections.line = | |
12487 | create_dwp_v2_or_v5_section (per_objfile, | |
12488 | &dwp_file->sections.line, | |
12489 | sections.line_offset, sections.line_size); | |
12490 | dwo_file->sections.macro = | |
12491 | create_dwp_v2_or_v5_section (per_objfile, | |
12492 | &dwp_file->sections.macro, | |
12493 | sections.macro_offset, | |
12494 | sections.macro_size); | |
12495 | dwo_file->sections.loclists = | |
12496 | create_dwp_v2_or_v5_section (per_objfile, | |
12497 | &dwp_file->sections.loclists, | |
12498 | sections.loclists_offset, | |
12499 | sections.loclists_size); | |
12500 | dwo_file->sections.rnglists = | |
12501 | create_dwp_v2_or_v5_section (per_objfile, | |
12502 | &dwp_file->sections.rnglists, | |
12503 | sections.rnglists_offset, | |
12504 | sections.rnglists_size); | |
12505 | dwo_file->sections.str_offsets = | |
12506 | create_dwp_v2_or_v5_section (per_objfile, | |
12507 | &dwp_file->sections.str_offsets, | |
12508 | sections.str_offsets_offset, | |
12509 | sections.str_offsets_size); | |
12510 | /* The "str" section is global to the entire DWP file. */ | |
12511 | dwo_file->sections.str = dwp_file->sections.str; | |
12512 | /* The info or types section is assigned below to dwo_unit, | |
12513 | there's no need to record it in dwo_file. | |
12514 | Also, we can't simply record type sections in dwo_file because | |
12515 | we record a pointer into the vector in dwo_unit. As we collect more | |
12516 | types we'll grow the vector and eventually have to reallocate space | |
12517 | for it, invalidating all copies of pointers into the previous | |
12518 | contents. */ | |
12519 | *dwo_file_slot = dwo_file; | |
12520 | } | |
12521 | else | |
12522 | { | |
12523 | if (dwarf_read_debug) | |
12524 | { | |
12525 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
12526 | virtual_dwo_name.c_str ()); | |
12527 | } | |
12528 | dwo_file = (struct dwo_file *) *dwo_file_slot; | |
12529 | } | |
12530 | ||
12531 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); | |
12532 | dwo_unit->dwo_file = dwo_file; | |
12533 | dwo_unit->signature = signature; | |
12534 | dwo_unit->section | |
12535 | = XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); | |
12536 | *dwo_unit->section = create_dwp_v2_or_v5_section (per_objfile, | |
12537 | &dwp_file->sections.info, | |
12538 | sections.info_or_types_offset, | |
12539 | sections.info_or_types_size); | |
73869dc2 DE |
12540 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
12541 | ||
12542 | return dwo_unit; | |
12543 | } | |
12544 | ||
57d63ce2 DE |
12545 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12546 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12547 | |
12548 | static struct dwo_unit * | |
976ca316 | 12549 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12550 | struct dwp_file *dwp_file, const char *comp_dir, |
57d63ce2 | 12551 | ULONGEST signature, int is_debug_types) |
80626a55 | 12552 | { |
57d63ce2 DE |
12553 | const struct dwp_hash_table *dwp_htab = |
12554 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12555 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12556 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12557 | uint32_t hash = signature & mask; |
12558 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12559 | unsigned int i; | |
12560 | void **slot; | |
870f88f7 | 12561 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12562 | |
12563 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12564 | find_dwo_cu.signature = signature; | |
19ac8c2e | 12565 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
12566 | ? dwp_file->loaded_tus.get () |
12567 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 12568 | &find_dwo_cu, INSERT); |
80626a55 DE |
12569 | |
12570 | if (*slot != NULL) | |
9a3c8263 | 12571 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12572 | |
12573 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12574 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12575 | { |
12576 | ULONGEST signature_in_table; | |
12577 | ||
12578 | signature_in_table = | |
57d63ce2 | 12579 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12580 | if (signature_in_table == signature) |
12581 | { | |
57d63ce2 DE |
12582 | uint32_t unit_index = |
12583 | read_4_bytes (dbfd, | |
12584 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12585 | |
73869dc2 DE |
12586 | if (dwp_file->version == 1) |
12587 | { | |
976ca316 SM |
12588 | *slot = create_dwo_unit_in_dwp_v1 (per_objfile, dwp_file, |
12589 | unit_index, comp_dir, | |
12590 | signature, is_debug_types); | |
73869dc2 | 12591 | } |
d2854d8d | 12592 | else if (dwp_file->version == 2) |
73869dc2 | 12593 | { |
976ca316 SM |
12594 | *slot = create_dwo_unit_in_dwp_v2 (per_objfile, dwp_file, |
12595 | unit_index, comp_dir, | |
12596 | signature, is_debug_types); | |
73869dc2 | 12597 | } |
d2854d8d CT |
12598 | else /* version == 5 */ |
12599 | { | |
12600 | *slot = create_dwo_unit_in_dwp_v5 (per_objfile, dwp_file, | |
12601 | unit_index, comp_dir, | |
12602 | signature, is_debug_types); | |
12603 | } | |
9a3c8263 | 12604 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12605 | } |
12606 | if (signature_in_table == 0) | |
12607 | return NULL; | |
12608 | hash = (hash + hash2) & mask; | |
12609 | } | |
12610 | ||
12611 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12612 | " [in module %s]"), | |
12613 | dwp_file->name); | |
12614 | } | |
12615 | ||
ab5088bf | 12616 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12617 | Open the file specified by FILE_NAME and hand it off to BFD for |
12618 | preliminary analysis. Return a newly initialized bfd *, which | |
12619 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12620 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12621 | SEARCH_CWD is true if the current directory is to be searched. |
12622 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12623 | If successful, the file is added to the bfd include table of the |
12624 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12625 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12626 | NOTE: This function is derived from symfile_bfd_open. */ |
12627 | ||
192b62ce | 12628 | static gdb_bfd_ref_ptr |
976ca316 | 12629 | try_open_dwop_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12630 | const char *file_name, int is_dwp, int search_cwd) |
3019eac3 | 12631 | { |
24b9144d | 12632 | int desc; |
9c02c129 DE |
12633 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12634 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12635 | to debug_file_directory. */ | |
e0cc99a6 | 12636 | const char *search_path; |
9c02c129 DE |
12637 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12638 | ||
e0cc99a6 | 12639 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12640 | if (search_cwd) |
12641 | { | |
12642 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12643 | { |
12644 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12645 | debug_file_directory, | |
12646 | (char *) NULL)); | |
12647 | search_path = search_path_holder.get (); | |
12648 | } | |
6ac97d4c | 12649 | else |
e0cc99a6 | 12650 | search_path = "."; |
6ac97d4c | 12651 | } |
9c02c129 | 12652 | else |
e0cc99a6 | 12653 | search_path = debug_file_directory; |
3019eac3 | 12654 | |
24b9144d | 12655 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12656 | if (is_dwp) |
12657 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12658 | |
12659 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12660 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12661 | O_RDONLY | O_BINARY, &absolute_name); |
12662 | if (desc < 0) | |
12663 | return NULL; | |
12664 | ||
e0cc99a6 TT |
12665 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12666 | gnutarget, desc)); | |
9c02c129 DE |
12667 | if (sym_bfd == NULL) |
12668 | return NULL; | |
192b62ce | 12669 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12670 | |
192b62ce TT |
12671 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12672 | return NULL; | |
3019eac3 | 12673 | |
13aaf454 DE |
12674 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12675 | This is important because things like demangled_names_hash lives in the | |
12676 | objfile's per_bfd space and may have references to things like symbol | |
12677 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
976ca316 | 12678 | gdb_bfd_record_inclusion (per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12679 | |
3019eac3 DE |
12680 | return sym_bfd; |
12681 | } | |
12682 | ||
ab5088bf | 12683 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12684 | COMP_DIR is the DW_AT_comp_dir attribute. |
12685 | The result is the bfd handle of the file. | |
12686 | If there is a problem finding or opening the file, return NULL. | |
12687 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12688 | same as symfile_bfd_open. */ | |
12689 | ||
192b62ce | 12690 | static gdb_bfd_ref_ptr |
976ca316 | 12691 | open_dwo_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12692 | const char *file_name, const char *comp_dir) |
3019eac3 | 12693 | { |
80626a55 | 12694 | if (IS_ABSOLUTE_PATH (file_name)) |
976ca316 | 12695 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12696 | 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
12697 | |
12698 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12699 | ||
12700 | if (comp_dir != NULL) | |
12701 | { | |
43816ebc TT |
12702 | gdb::unique_xmalloc_ptr<char> path_to_try |
12703 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12704 | |
12705 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12706 | search path, which seems useful. */ | |
976ca316 | 12707 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, path_to_try.get (), |
ed2dc618 | 12708 | 0 /*is_dwp*/, |
192b62ce | 12709 | 1 /*search_cwd*/)); |
3019eac3 DE |
12710 | if (abfd != NULL) |
12711 | return abfd; | |
12712 | } | |
12713 | ||
12714 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12715 | is a list of paths. */ | |
12716 | ||
12717 | if (*debug_file_directory == '\0') | |
12718 | return NULL; | |
12719 | ||
976ca316 | 12720 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12721 | 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
12722 | } |
12723 | ||
80626a55 DE |
12724 | /* This function is mapped across the sections and remembers the offset and |
12725 | size of each of the DWO debugging sections we are interested in. */ | |
12726 | ||
12727 | static void | |
5bb6e9dd TT |
12728 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, |
12729 | dwo_sections *dwo_sections) | |
80626a55 | 12730 | { |
80626a55 DE |
12731 | const struct dwop_section_names *names = &dwop_section_names; |
12732 | ||
12733 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12734 | { | |
049412e3 | 12735 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12736 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12737 | } |
12738 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12739 | { | |
049412e3 | 12740 | dwo_sections->info.s.section = sectp; |
fd361982 | 12741 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12742 | } |
12743 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12744 | { | |
049412e3 | 12745 | dwo_sections->line.s.section = sectp; |
fd361982 | 12746 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12747 | } |
12748 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12749 | { | |
049412e3 | 12750 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12751 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12752 | } |
41144253 | 12753 | else if (section_is_p (sectp->name, &names->loclists_dwo)) |
12754 | { | |
12755 | dwo_sections->loclists.s.section = sectp; | |
12756 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12757 | } | |
80626a55 DE |
12758 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) |
12759 | { | |
049412e3 | 12760 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12761 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12762 | } |
12763 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12764 | { | |
049412e3 | 12765 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12766 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 | 12767 | } |
d0ce17d8 CT |
12768 | else if (section_is_p (sectp->name, &names->rnglists_dwo)) |
12769 | { | |
12770 | dwo_sections->rnglists.s.section = sectp; | |
12771 | dwo_sections->rnglists.size = bfd_section_size (sectp); | |
12772 | } | |
80626a55 DE |
12773 | else if (section_is_p (sectp->name, &names->str_dwo)) |
12774 | { | |
049412e3 | 12775 | dwo_sections->str.s.section = sectp; |
fd361982 | 12776 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12777 | } |
12778 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12779 | { | |
049412e3 | 12780 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12781 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12782 | } |
12783 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12784 | { | |
12785 | struct dwarf2_section_info type_section; | |
12786 | ||
12787 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12788 | type_section.s.section = sectp; |
fd361982 | 12789 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12790 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12791 | } |
12792 | } | |
12793 | ||
ab5088bf | 12794 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12795 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12796 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12797 | |
12798 | static struct dwo_file * | |
4ab09049 SM |
12799 | open_and_init_dwo_file (dwarf2_cu *cu, const char *dwo_name, |
12800 | const char *comp_dir) | |
3019eac3 | 12801 | { |
976ca316 | 12802 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 12803 | |
976ca316 | 12804 | gdb_bfd_ref_ptr dbfd = open_dwo_file (per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12805 | if (dbfd == NULL) |
12806 | { | |
b4f54984 | 12807 | if (dwarf_read_debug) |
80626a55 DE |
12808 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12809 | return NULL; | |
12810 | } | |
263db9a1 | 12811 | |
51ac9db5 | 12812 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12813 | dwo_file->dwo_name = dwo_name; |
12814 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12815 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12816 | |
5bb6e9dd TT |
12817 | for (asection *sec : gdb_bfd_sections (dwo_file->dbfd)) |
12818 | dwarf2_locate_dwo_sections (dwo_file->dbfd.get (), sec, | |
12819 | &dwo_file->sections); | |
3019eac3 | 12820 | |
976ca316 SM |
12821 | create_cus_hash_table (per_objfile, cu, *dwo_file, dwo_file->sections.info, |
12822 | dwo_file->cus); | |
3019eac3 | 12823 | |
d2854d8d CT |
12824 | if (cu->per_cu->dwarf_version < 5) |
12825 | { | |
12826 | create_debug_types_hash_table (per_objfile, dwo_file.get (), | |
12827 | dwo_file->sections.types, dwo_file->tus); | |
12828 | } | |
12829 | else | |
12830 | { | |
12831 | create_debug_type_hash_table (per_objfile, dwo_file.get (), | |
12832 | &dwo_file->sections.info, dwo_file->tus, | |
12833 | rcuh_kind::TYPE); | |
12834 | } | |
3019eac3 | 12835 | |
b4f54984 | 12836 | if (dwarf_read_debug) |
80626a55 DE |
12837 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12838 | ||
263db9a1 | 12839 | return dwo_file.release (); |
3019eac3 DE |
12840 | } |
12841 | ||
80626a55 | 12842 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12843 | size of each of the DWP debugging sections common to version 1 and 2 that |
12844 | we are interested in. */ | |
3019eac3 | 12845 | |
80626a55 | 12846 | static void |
73869dc2 | 12847 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
5bb6e9dd | 12848 | dwp_file *dwp_file) |
3019eac3 | 12849 | { |
80626a55 DE |
12850 | const struct dwop_section_names *names = &dwop_section_names; |
12851 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12852 | |
80626a55 | 12853 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12854 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12855 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12856 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12857 | |
80626a55 DE |
12858 | /* Look for specific sections that we need. */ |
12859 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12860 | { | |
049412e3 | 12861 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12862 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12863 | } |
12864 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12865 | { | |
049412e3 | 12866 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12867 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12868 | } |
12869 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12870 | { | |
049412e3 | 12871 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12872 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12873 | } |
12874 | } | |
3019eac3 | 12875 | |
73869dc2 DE |
12876 | /* This function is mapped across the sections and remembers the offset and |
12877 | size of each of the DWP version 2 debugging sections that we are interested | |
12878 | in. This is split into a separate function because we don't know if we | |
d2854d8d | 12879 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ |
73869dc2 DE |
12880 | |
12881 | static void | |
12882 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12883 | { | |
9a3c8263 | 12884 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12885 | const struct dwop_section_names *names = &dwop_section_names; |
12886 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12887 | ||
12888 | /* Record the ELF section number for later lookup: this is what the | |
12889 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12890 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12891 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12892 | ||
12893 | /* Look for specific sections that we need. */ | |
12894 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12895 | { | |
049412e3 | 12896 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12897 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12898 | } |
12899 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12900 | { | |
049412e3 | 12901 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12902 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12903 | } |
12904 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12905 | { | |
049412e3 | 12906 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12907 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12908 | } |
12909 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12910 | { | |
049412e3 | 12911 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12912 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12913 | } |
12914 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12915 | { | |
049412e3 | 12916 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12917 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
12918 | } |
12919 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12920 | { | |
049412e3 | 12921 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12922 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
12923 | } |
12924 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12925 | { | |
049412e3 | 12926 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12927 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
12928 | } |
12929 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12930 | { | |
049412e3 | 12931 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12932 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12933 | } |
12934 | } | |
12935 | ||
d2854d8d CT |
12936 | /* This function is mapped across the sections and remembers the offset and |
12937 | size of each of the DWP version 5 debugging sections that we are interested | |
12938 | in. This is split into a separate function because we don't know if we | |
12939 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ | |
12940 | ||
12941 | static void | |
12942 | dwarf2_locate_v5_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12943 | { | |
12944 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; | |
12945 | const struct dwop_section_names *names = &dwop_section_names; | |
12946 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12947 | ||
12948 | /* Record the ELF section number for later lookup: this is what the | |
12949 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12950 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12951 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12952 | ||
12953 | /* Look for specific sections that we need. */ | |
12954 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12955 | { | |
12956 | dwp_file->sections.abbrev.s.section = sectp; | |
12957 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); | |
12958 | } | |
12959 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12960 | { | |
12961 | dwp_file->sections.info.s.section = sectp; | |
12962 | dwp_file->sections.info.size = bfd_section_size (sectp); | |
12963 | } | |
12964 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12965 | { | |
12966 | dwp_file->sections.line.s.section = sectp; | |
12967 | dwp_file->sections.line.size = bfd_section_size (sectp); | |
12968 | } | |
12969 | else if (section_is_p (sectp->name, &names->loclists_dwo)) | |
12970 | { | |
12971 | dwp_file->sections.loclists.s.section = sectp; | |
12972 | dwp_file->sections.loclists.size = bfd_section_size (sectp); | |
12973 | } | |
12974 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12975 | { | |
12976 | dwp_file->sections.macro.s.section = sectp; | |
12977 | dwp_file->sections.macro.size = bfd_section_size (sectp); | |
12978 | } | |
12979 | else if (section_is_p (sectp->name, &names->rnglists_dwo)) | |
12980 | { | |
12981 | dwp_file->sections.rnglists.s.section = sectp; | |
12982 | dwp_file->sections.rnglists.size = bfd_section_size (sectp); | |
12983 | } | |
12984 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12985 | { | |
12986 | dwp_file->sections.str_offsets.s.section = sectp; | |
12987 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); | |
12988 | } | |
12989 | } | |
12990 | ||
80626a55 | 12991 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12992 | |
80626a55 DE |
12993 | static hashval_t |
12994 | hash_dwp_loaded_cutus (const void *item) | |
12995 | { | |
9a3c8263 | 12996 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12997 | |
80626a55 DE |
12998 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12999 | return dwo_unit->signature; | |
3019eac3 DE |
13000 | } |
13001 | ||
80626a55 | 13002 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13003 | |
80626a55 DE |
13004 | static int |
13005 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13006 | { |
9a3c8263 SM |
13007 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13008 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13009 | |
80626a55 DE |
13010 | return dua->signature == dub->signature; |
13011 | } | |
3019eac3 | 13012 | |
80626a55 | 13013 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13014 | |
48b490f2 | 13015 | static htab_up |
298e9637 | 13016 | allocate_dwp_loaded_cutus_table () |
80626a55 | 13017 | { |
48b490f2 TT |
13018 | return htab_up (htab_create_alloc (3, |
13019 | hash_dwp_loaded_cutus, | |
13020 | eq_dwp_loaded_cutus, | |
13021 | NULL, xcalloc, xfree)); | |
80626a55 | 13022 | } |
3019eac3 | 13023 | |
ab5088bf DE |
13024 | /* Try to open DWP file FILE_NAME. |
13025 | The result is the bfd handle of the file. | |
13026 | If there is a problem finding or opening the file, return NULL. | |
13027 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13028 | same as symfile_bfd_open. */ | |
13029 | ||
192b62ce | 13030 | static gdb_bfd_ref_ptr |
976ca316 | 13031 | open_dwp_file (dwarf2_per_objfile *per_objfile, const char *file_name) |
ab5088bf | 13032 | { |
976ca316 | 13033 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 13034 | 1 /*is_dwp*/, |
192b62ce | 13035 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13036 | if (abfd != NULL) |
13037 | return abfd; | |
13038 | ||
13039 | /* Work around upstream bug 15652. | |
13040 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13041 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13042 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13043 | of the executable's path may have discarded the needed info. | |
13044 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13045 | .gnu_debuglink, but that doesn't exist yet.] | |
13046 | Strip the directory from FILE_NAME and search again. */ | |
13047 | if (*debug_file_directory != '\0') | |
13048 | { | |
13049 | /* Don't implicitly search the current directory here. | |
13050 | If the user wants to search "." to handle this case, | |
13051 | it must be added to debug-file-directory. */ | |
976ca316 SM |
13052 | return try_open_dwop_file (per_objfile, lbasename (file_name), |
13053 | 1 /*is_dwp*/, | |
6ac97d4c DE |
13054 | 0 /*search_cwd*/); |
13055 | } | |
13056 | ||
13057 | return NULL; | |
ab5088bf DE |
13058 | } |
13059 | ||
80626a55 DE |
13060 | /* Initialize the use of the DWP file for the current objfile. |
13061 | By convention the name of the DWP file is ${objfile}.dwp. | |
13062 | The result is NULL if it can't be found. */ | |
a766d390 | 13063 | |
400174b1 | 13064 | static std::unique_ptr<struct dwp_file> |
976ca316 | 13065 | open_and_init_dwp_file (dwarf2_per_objfile *per_objfile) |
80626a55 | 13066 | { |
976ca316 | 13067 | struct objfile *objfile = per_objfile->objfile; |
80626a55 | 13068 | |
82bf32bc JK |
13069 | /* Try to find first .dwp for the binary file before any symbolic links |
13070 | resolving. */ | |
6c447423 DE |
13071 | |
13072 | /* If the objfile is a debug file, find the name of the real binary | |
13073 | file and get the name of dwp file from there. */ | |
d721ba37 | 13074 | std::string dwp_name; |
6c447423 DE |
13075 | if (objfile->separate_debug_objfile_backlink != NULL) |
13076 | { | |
13077 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13078 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13079 | |
d721ba37 | 13080 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13081 | } |
13082 | else | |
d721ba37 PA |
13083 | dwp_name = objfile->original_name; |
13084 | ||
13085 | dwp_name += ".dwp"; | |
80626a55 | 13086 | |
976ca316 | 13087 | gdb_bfd_ref_ptr dbfd (open_dwp_file (per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13088 | if (dbfd == NULL |
13089 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13090 | { | |
13091 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13092 | dwp_name = objfile_name (objfile); |
13093 | dwp_name += ".dwp"; | |
976ca316 | 13094 | dbfd = open_dwp_file (per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13095 | } |
13096 | ||
80626a55 DE |
13097 | if (dbfd == NULL) |
13098 | { | |
b4f54984 | 13099 | if (dwarf_read_debug) |
d721ba37 | 13100 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 13101 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 13102 | } |
400174b1 TT |
13103 | |
13104 | const char *name = bfd_get_filename (dbfd.get ()); | |
13105 | std::unique_ptr<struct dwp_file> dwp_file | |
13106 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 13107 | |
0a0f4c01 | 13108 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 | 13109 | dwp_file->elf_sections = |
976ca316 | 13110 | OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
80626a55 DE |
13111 | dwp_file->num_sections, asection *); |
13112 | ||
5bb6e9dd TT |
13113 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
13114 | dwarf2_locate_common_dwp_sections (dwp_file->dbfd.get (), sec, | |
13115 | dwp_file.get ()); | |
80626a55 | 13116 | |
976ca316 | 13117 | dwp_file->cus = create_dwp_hash_table (per_objfile, dwp_file.get (), 0); |
80626a55 | 13118 | |
976ca316 | 13119 | dwp_file->tus = create_dwp_hash_table (per_objfile, dwp_file.get (), 1); |
80626a55 | 13120 | |
73869dc2 | 13121 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13122 | if (dwp_file->cus && dwp_file->tus |
13123 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13124 | { |
13125 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13126 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13127 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13128 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13129 | " TU version %s [in DWP file %s]"), | |
13130 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13131 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13132 | } |
08302ed2 DE |
13133 | |
13134 | if (dwp_file->cus) | |
13135 | dwp_file->version = dwp_file->cus->version; | |
13136 | else if (dwp_file->tus) | |
13137 | dwp_file->version = dwp_file->tus->version; | |
13138 | else | |
13139 | dwp_file->version = 2; | |
73869dc2 | 13140 | |
5bb6e9dd TT |
13141 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
13142 | { | |
13143 | if (dwp_file->version == 2) | |
13144 | dwarf2_locate_v2_dwp_sections (dwp_file->dbfd.get (), sec, | |
13145 | dwp_file.get ()); | |
13146 | else | |
13147 | dwarf2_locate_v5_dwp_sections (dwp_file->dbfd.get (), sec, | |
13148 | dwp_file.get ()); | |
13149 | } | |
73869dc2 | 13150 | |
298e9637 SM |
13151 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
13152 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 13153 | |
b4f54984 | 13154 | if (dwarf_read_debug) |
80626a55 DE |
13155 | { |
13156 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
13157 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
13158 | " %s CUs, %s TUs\n", |
13159 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13160 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13161 | } |
13162 | ||
13163 | return dwp_file; | |
3019eac3 | 13164 | } |
c906108c | 13165 | |
ab5088bf DE |
13166 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13167 | ||
13168 | static struct dwp_file * | |
976ca316 | 13169 | get_dwp_file (dwarf2_per_objfile *per_objfile) |
ab5088bf | 13170 | { |
976ca316 | 13171 | if (!per_objfile->per_bfd->dwp_checked) |
ab5088bf | 13172 | { |
976ca316 SM |
13173 | per_objfile->per_bfd->dwp_file = open_and_init_dwp_file (per_objfile); |
13174 | per_objfile->per_bfd->dwp_checked = 1; | |
ab5088bf | 13175 | } |
976ca316 | 13176 | return per_objfile->per_bfd->dwp_file.get (); |
ab5088bf DE |
13177 | } |
13178 | ||
80626a55 DE |
13179 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13180 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13181 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13182 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13183 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13184 | ||
13185 | This is called, for example, when wanting to read a variable with a | |
13186 | complex location. Therefore we don't want to do file i/o for every call. | |
13187 | Therefore we don't want to look for a DWO file on every call. | |
13188 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13189 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13190 | for a DWO file. | |
13191 | ||
1c658ad5 | 13192 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13193 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13194 | |
3019eac3 | 13195 | static struct dwo_unit * |
4ab09049 | 13196 | lookup_dwo_cutu (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 | 13197 | ULONGEST signature, int is_debug_types) |
3019eac3 | 13198 | { |
976ca316 SM |
13199 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13200 | struct objfile *objfile = per_objfile->objfile; | |
80626a55 DE |
13201 | const char *kind = is_debug_types ? "TU" : "CU"; |
13202 | void **dwo_file_slot; | |
3019eac3 | 13203 | struct dwo_file *dwo_file; |
80626a55 | 13204 | struct dwp_file *dwp_file; |
cb1df416 | 13205 | |
6a506a2d DE |
13206 | /* First see if there's a DWP file. |
13207 | If we have a DWP file but didn't find the DWO inside it, don't | |
13208 | look for the original DWO file. It makes gdb behave differently | |
13209 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13210 | |
976ca316 | 13211 | dwp_file = get_dwp_file (per_objfile); |
80626a55 | 13212 | if (dwp_file != NULL) |
cf2c3c16 | 13213 | { |
80626a55 DE |
13214 | const struct dwp_hash_table *dwp_htab = |
13215 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13216 | ||
13217 | if (dwp_htab != NULL) | |
13218 | { | |
13219 | struct dwo_unit *dwo_cutu = | |
976ca316 SM |
13220 | lookup_dwo_unit_in_dwp (per_objfile, dwp_file, comp_dir, signature, |
13221 | is_debug_types); | |
80626a55 DE |
13222 | |
13223 | if (dwo_cutu != NULL) | |
13224 | { | |
b4f54984 | 13225 | if (dwarf_read_debug) |
80626a55 DE |
13226 | { |
13227 | fprintf_unfiltered (gdb_stdlog, | |
13228 | "Virtual DWO %s %s found: @%s\n", | |
13229 | kind, hex_string (signature), | |
13230 | host_address_to_string (dwo_cutu)); | |
13231 | } | |
13232 | return dwo_cutu; | |
13233 | } | |
13234 | } | |
13235 | } | |
6a506a2d | 13236 | else |
80626a55 | 13237 | { |
6a506a2d | 13238 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13239 | |
976ca316 | 13240 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, dwo_name, comp_dir); |
6a506a2d | 13241 | if (*dwo_file_slot == NULL) |
80626a55 | 13242 | { |
6a506a2d | 13243 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
4ab09049 | 13244 | *dwo_file_slot = open_and_init_dwo_file (cu, dwo_name, comp_dir); |
19c3d4c9 | 13245 | } |
6a506a2d | 13246 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13247 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13248 | |
6a506a2d | 13249 | if (dwo_file != NULL) |
19c3d4c9 | 13250 | { |
6a506a2d DE |
13251 | struct dwo_unit *dwo_cutu = NULL; |
13252 | ||
13253 | if (is_debug_types && dwo_file->tus) | |
13254 | { | |
13255 | struct dwo_unit find_dwo_cutu; | |
13256 | ||
13257 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13258 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 13259 | dwo_cutu |
b0b6a987 TT |
13260 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
13261 | &find_dwo_cutu); | |
6a506a2d | 13262 | } |
33c5cd75 | 13263 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13264 | { |
33c5cd75 DB |
13265 | struct dwo_unit find_dwo_cutu; |
13266 | ||
13267 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13268 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 13269 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 13270 | &find_dwo_cutu); |
6a506a2d DE |
13271 | } |
13272 | ||
13273 | if (dwo_cutu != NULL) | |
13274 | { | |
b4f54984 | 13275 | if (dwarf_read_debug) |
6a506a2d DE |
13276 | { |
13277 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
13278 | kind, dwo_name, hex_string (signature), | |
13279 | host_address_to_string (dwo_cutu)); | |
13280 | } | |
13281 | return dwo_cutu; | |
80626a55 DE |
13282 | } |
13283 | } | |
2e276125 | 13284 | } |
9cdd5dbd | 13285 | |
80626a55 DE |
13286 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13287 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13288 | correctly to find the file. */ | |
13289 | ||
b4f54984 | 13290 | if (dwarf_read_debug) |
80626a55 DE |
13291 | { |
13292 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
13293 | kind, dwo_name, hex_string (signature)); | |
13294 | } | |
3019eac3 | 13295 | |
6656a72d DE |
13296 | /* This is a warning and not a complaint because it can be caused by |
13297 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13298 | { |
13299 | /* Print the name of the DWP file if we looked there, helps the user | |
13300 | better diagnose the problem. */ | |
791afaa2 | 13301 | std::string dwp_text; |
43942612 DE |
13302 | |
13303 | if (dwp_file != NULL) | |
791afaa2 TT |
13304 | dwp_text = string_printf (" [in DWP file %s]", |
13305 | lbasename (dwp_file->name)); | |
43942612 | 13306 | |
9d8780f0 | 13307 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 | 13308 | " [in module %s]"), |
4ab09049 SM |
13309 | kind, dwo_name, hex_string (signature), dwp_text.c_str (), kind, |
13310 | sect_offset_str (cu->per_cu->sect_off), objfile_name (objfile)); | |
43942612 | 13311 | } |
3019eac3 | 13312 | return NULL; |
5fb290d7 DJ |
13313 | } |
13314 | ||
80626a55 DE |
13315 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13316 | See lookup_dwo_cutu_unit for details. */ | |
13317 | ||
13318 | static struct dwo_unit * | |
4ab09049 | 13319 | lookup_dwo_comp_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 DE |
13320 | ULONGEST signature) |
13321 | { | |
4ab09049 SM |
13322 | gdb_assert (!cu->per_cu->is_debug_types); |
13323 | ||
13324 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, signature, 0); | |
80626a55 DE |
13325 | } |
13326 | ||
13327 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13328 | See lookup_dwo_cutu_unit for details. */ | |
13329 | ||
13330 | static struct dwo_unit * | |
4ab09049 | 13331 | lookup_dwo_type_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir) |
80626a55 | 13332 | { |
4ab09049 SM |
13333 | gdb_assert (cu->per_cu->is_debug_types); |
13334 | ||
13335 | signatured_type *sig_type = (signatured_type *) cu->per_cu; | |
13336 | ||
13337 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, sig_type->signature, 1); | |
80626a55 DE |
13338 | } |
13339 | ||
89e63ee4 DE |
13340 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13341 | ||
13342 | static int | |
13343 | queue_and_load_dwo_tu (void **slot, void *info) | |
13344 | { | |
13345 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
d460f660 | 13346 | dwarf2_cu *cu = (dwarf2_cu *) info; |
89e63ee4 | 13347 | ULONGEST signature = dwo_unit->signature; |
d460f660 | 13348 | signatured_type *sig_type = lookup_dwo_signatured_type (cu, signature); |
89e63ee4 DE |
13349 | |
13350 | if (sig_type != NULL) | |
13351 | { | |
13352 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13353 | ||
13354 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13355 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13356 | while processing PER_CU. */ | |
120ce1b5 | 13357 | if (maybe_queue_comp_unit (NULL, sig_cu, cu->per_objfile, cu->language)) |
d460f660 SM |
13358 | load_full_type_unit (sig_cu, cu->per_objfile); |
13359 | cu->per_cu->imported_symtabs_push (sig_cu); | |
89e63ee4 DE |
13360 | } |
13361 | ||
13362 | return 1; | |
13363 | } | |
13364 | ||
1b555f17 | 13365 | /* Queue all TUs contained in the DWO of CU to be read in. |
89e63ee4 DE |
13366 | The DWO may have the only definition of the type, though it may not be |
13367 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13368 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13369 | ||
13370 | static void | |
1b555f17 | 13371 | queue_and_load_all_dwo_tus (dwarf2_cu *cu) |
89e63ee4 DE |
13372 | { |
13373 | struct dwo_unit *dwo_unit; | |
13374 | struct dwo_file *dwo_file; | |
13375 | ||
1b555f17 SM |
13376 | gdb_assert (cu != nullptr); |
13377 | gdb_assert (!cu->per_cu->is_debug_types); | |
13378 | gdb_assert (get_dwp_file (cu->per_objfile) == nullptr); | |
89e63ee4 | 13379 | |
1b555f17 | 13380 | dwo_unit = cu->dwo_unit; |
89e63ee4 DE |
13381 | gdb_assert (dwo_unit != NULL); |
13382 | ||
13383 | dwo_file = dwo_unit->dwo_file; | |
13384 | if (dwo_file->tus != NULL) | |
1b555f17 | 13385 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, cu); |
89e63ee4 DE |
13386 | } |
13387 | ||
3019eac3 | 13388 | /* Read in various DIEs. */ |
348e048f | 13389 | |
d389af10 | 13390 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13391 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13392 | already referenced by DW_AT_abstract_origin from the children of the | |
13393 | current DIE. */ | |
d389af10 JK |
13394 | |
13395 | static void | |
13396 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13397 | { | |
13398 | struct die_info *child_die; | |
791afaa2 | 13399 | sect_offset *offsetp; |
d389af10 JK |
13400 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13401 | struct die_info *origin_die; | |
13402 | /* Iterator of the ORIGIN_DIE children. */ | |
13403 | struct die_info *origin_child_die; | |
d389af10 | 13404 | struct attribute *attr; |
cd02d79d PA |
13405 | struct dwarf2_cu *origin_cu; |
13406 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13407 | |
13408 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13409 | if (!attr) | |
13410 | return; | |
13411 | ||
cd02d79d PA |
13412 | /* Note that following die references may follow to a die in a |
13413 | different cu. */ | |
13414 | ||
13415 | origin_cu = cu; | |
13416 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13417 | ||
13418 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13419 | symbols in. */ | |
13420 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13421 | origin_cu->list_in_scope = cu->list_in_scope; | |
13422 | ||
edb3359d DJ |
13423 | if (die->tag != origin_die->tag |
13424 | && !(die->tag == DW_TAG_inlined_subroutine | |
13425 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13426 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13427 | sect_offset_str (die->sect_off), |
13428 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13429 | |
791afaa2 | 13430 | std::vector<sect_offset> offsets; |
d389af10 | 13431 | |
3ea89b92 PMR |
13432 | for (child_die = die->child; |
13433 | child_die && child_die->tag; | |
436c571c | 13434 | child_die = child_die->sibling) |
3ea89b92 PMR |
13435 | { |
13436 | struct die_info *child_origin_die; | |
13437 | struct dwarf2_cu *child_origin_cu; | |
13438 | ||
13439 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13440 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13441 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13442 | present in the abstract instance but not referenced in the concrete | |
13443 | one. */ | |
216f72a1 JK |
13444 | if (child_die->tag == DW_TAG_call_site |
13445 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13446 | continue; |
13447 | ||
c38f313d DJ |
13448 | /* For each CHILD_DIE, find the corresponding child of |
13449 | ORIGIN_DIE. If there is more than one layer of | |
13450 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13451 | but GCC versions at least through 4.4 generate this (GCC PR | |
13452 | 40573). */ | |
3ea89b92 PMR |
13453 | child_origin_die = child_die; |
13454 | child_origin_cu = cu; | |
c38f313d DJ |
13455 | while (1) |
13456 | { | |
cd02d79d PA |
13457 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13458 | child_origin_cu); | |
c38f313d DJ |
13459 | if (attr == NULL) |
13460 | break; | |
cd02d79d PA |
13461 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13462 | &child_origin_cu); | |
c38f313d DJ |
13463 | } |
13464 | ||
d389af10 JK |
13465 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13466 | counterpart may exist. */ | |
c38f313d | 13467 | if (child_origin_die != child_die) |
d389af10 | 13468 | { |
edb3359d DJ |
13469 | if (child_die->tag != child_origin_die->tag |
13470 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13471 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13472 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13473 | "different tags"), |
9d8780f0 SM |
13474 | sect_offset_str (child_die->sect_off), |
13475 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13476 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13477 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13478 | "different parents"), |
9d8780f0 SM |
13479 | sect_offset_str (child_die->sect_off), |
13480 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13481 | else |
791afaa2 | 13482 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13483 | } |
d389af10 | 13484 | } |
791afaa2 TT |
13485 | std::sort (offsets.begin (), offsets.end ()); |
13486 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13487 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13488 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13489 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13490 | "to DIE %s as their abstract origin"), |
13491 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13492 | |
791afaa2 | 13493 | offsetp = offsets.data (); |
d389af10 JK |
13494 | origin_child_die = origin_die->child; |
13495 | while (origin_child_die && origin_child_die->tag) | |
13496 | { | |
13497 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13498 | while (offsetp < offsets_end |
9c541725 | 13499 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13500 | offsetp++; |
b64f50a1 | 13501 | if (offsetp >= offsets_end |
9c541725 | 13502 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13503 | { |
adde2bff DE |
13504 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13505 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13506 | This can happen with mutually referenced abstract_origins. | |
13507 | PR 16581. */ | |
13508 | if (!origin_child_die->in_process) | |
13509 | process_die (origin_child_die, origin_cu); | |
d389af10 | 13510 | } |
436c571c | 13511 | origin_child_die = origin_child_die->sibling; |
d389af10 | 13512 | } |
cd02d79d | 13513 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13514 | |
13515 | if (cu != origin_cu) | |
13516 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13517 | } |
13518 | ||
c906108c | 13519 | static void |
e7c27a73 | 13520 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13521 | { |
5e22e966 | 13522 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13523 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 13524 | struct context_stack *newobj; |
c906108c SS |
13525 | CORE_ADDR lowpc; |
13526 | CORE_ADDR highpc; | |
13527 | struct die_info *child_die; | |
edb3359d | 13528 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13529 | const char *name; |
e142c38c | 13530 | CORE_ADDR baseaddr; |
801e3a5b | 13531 | struct block *block; |
edb3359d | 13532 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13533 | std::vector<struct symbol *> template_args; |
34eaf542 | 13534 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13535 | |
13536 | if (inlined_func) | |
13537 | { | |
13538 | /* If we do not have call site information, we can't show the | |
13539 | caller of this inlined function. That's too confusing, so | |
13540 | only use the scope for local variables. */ | |
13541 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13542 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13543 | if (call_line == NULL || call_file == NULL) | |
13544 | { | |
13545 | read_lexical_block_scope (die, cu); | |
13546 | return; | |
13547 | } | |
13548 | } | |
c906108c | 13549 | |
b3b3bada | 13550 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13551 | |
94af9270 | 13552 | name = dwarf2_name (die, cu); |
c906108c | 13553 | |
e8d05480 JB |
13554 | /* Ignore functions with missing or empty names. These are actually |
13555 | illegal according to the DWARF standard. */ | |
13556 | if (name == NULL) | |
13557 | { | |
b98664d3 | 13558 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13559 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13560 | return; |
13561 | } | |
13562 | ||
13563 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13564 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13565 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13566 | { |
ae4d0c03 PM |
13567 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13568 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13569 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13570 | "for subprogram DIE at %s"), |
13571 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13572 | return; |
13573 | } | |
c906108c | 13574 | |
3e29f34a MR |
13575 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13576 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13577 | |
34eaf542 TT |
13578 | /* If we have any template arguments, then we must allocate a |
13579 | different sort of symbol. */ | |
436c571c | 13580 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
13581 | { |
13582 | if (child_die->tag == DW_TAG_template_type_param | |
13583 | || child_die->tag == DW_TAG_template_value_param) | |
13584 | { | |
8c14c3a3 | 13585 | templ_func = new (&objfile->objfile_obstack) template_symbol; |
cf724bc9 | 13586 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13587 | break; |
13588 | } | |
13589 | } | |
13590 | ||
c24bdb02 | 13591 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13592 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13593 | (struct symbol *) templ_func); | |
4c2df51b | 13594 | |
81873cc8 | 13595 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13596 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13597 | cu->language); |
13598 | ||
4cecd739 DJ |
13599 | /* If there is a location expression for DW_AT_frame_base, record |
13600 | it. */ | |
e142c38c | 13601 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13602 | if (attr != nullptr) |
fe978cb0 | 13603 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13604 | |
63e43d3a PMR |
13605 | /* If there is a location for the static link, record it. */ |
13606 | newobj->static_link = NULL; | |
13607 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13608 | if (attr != nullptr) |
63e43d3a | 13609 | { |
224c3ddb SM |
13610 | newobj->static_link |
13611 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 13612 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
293e7e51 | 13613 | cu->addr_type ()); |
63e43d3a PMR |
13614 | } |
13615 | ||
c24bdb02 | 13616 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13617 | |
639d11d3 | 13618 | if (die->child != NULL) |
c906108c | 13619 | { |
639d11d3 | 13620 | child_die = die->child; |
c906108c SS |
13621 | while (child_die && child_die->tag) |
13622 | { | |
34eaf542 TT |
13623 | if (child_die->tag == DW_TAG_template_type_param |
13624 | || child_die->tag == DW_TAG_template_value_param) | |
13625 | { | |
13626 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13627 | ||
f1078f66 | 13628 | if (arg != NULL) |
2f4732b0 | 13629 | template_args.push_back (arg); |
34eaf542 TT |
13630 | } |
13631 | else | |
13632 | process_die (child_die, cu); | |
436c571c | 13633 | child_die = child_die->sibling; |
c906108c SS |
13634 | } |
13635 | } | |
13636 | ||
d389af10 JK |
13637 | inherit_abstract_dies (die, cu); |
13638 | ||
4a811a97 UW |
13639 | /* If we have a DW_AT_specification, we might need to import using |
13640 | directives from the context of the specification DIE. See the | |
13641 | comment in determine_prefix. */ | |
13642 | if (cu->language == language_cplus | |
13643 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13644 | { | |
13645 | struct dwarf2_cu *spec_cu = cu; | |
13646 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13647 | ||
13648 | while (spec_die) | |
13649 | { | |
13650 | child_die = spec_die->child; | |
13651 | while (child_die && child_die->tag) | |
13652 | { | |
13653 | if (child_die->tag == DW_TAG_imported_module) | |
13654 | process_die (child_die, spec_cu); | |
436c571c | 13655 | child_die = child_die->sibling; |
4a811a97 UW |
13656 | } |
13657 | ||
13658 | /* In some cases, GCC generates specification DIEs that | |
13659 | themselves contain DW_AT_specification attributes. */ | |
13660 | spec_die = die_specification (spec_die, &spec_cu); | |
13661 | } | |
13662 | } | |
13663 | ||
c24bdb02 | 13664 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13665 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13666 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13667 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13668 | |
df8a16a1 | 13669 | /* For C++, set the block's scope. */ |
45280282 IB |
13670 | if ((cu->language == language_cplus |
13671 | || cu->language == language_fortran | |
c44af4eb TT |
13672 | || cu->language == language_d |
13673 | || cu->language == language_rust) | |
4d4ec4e5 | 13674 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13675 | block_set_scope (block, determine_prefix (die, cu), |
13676 | &objfile->objfile_obstack); | |
df8a16a1 | 13677 | |
801e3a5b JB |
13678 | /* If we have address ranges, record them. */ |
13679 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13680 | |
a60f3166 | 13681 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13682 | |
34eaf542 | 13683 | /* Attach template arguments to function. */ |
2f4732b0 | 13684 | if (!template_args.empty ()) |
34eaf542 TT |
13685 | { |
13686 | gdb_assert (templ_func != NULL); | |
13687 | ||
2f4732b0 | 13688 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13689 | templ_func->template_arguments |
8d749320 SM |
13690 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13691 | templ_func->n_template_arguments); | |
34eaf542 | 13692 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13693 | template_args.data (), |
34eaf542 | 13694 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13695 | |
13696 | /* Make sure that the symtab is set on the new symbols. Even | |
13697 | though they don't appear in this symtab directly, other parts | |
13698 | of gdb assume that symbols do, and this is reasonably | |
13699 | true. */ | |
8634679f | 13700 | for (symbol *sym : template_args) |
3e1d3d8c | 13701 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13702 | } |
13703 | ||
208d8187 JB |
13704 | /* In C++, we can have functions nested inside functions (e.g., when |
13705 | a function declares a class that has methods). This means that | |
13706 | when we finish processing a function scope, we may need to go | |
13707 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13708 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13709 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13710 | |
921e78cf JB |
13711 | /* If we've finished processing a top-level function, subsequent |
13712 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13713 | if (cu->get_builder ()->outermost_context_p ()) |
13714 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13715 | } |
13716 | ||
13717 | /* Process all the DIES contained within a lexical block scope. Start | |
13718 | a new scope, process the dies, and then close the scope. */ | |
13719 | ||
13720 | static void | |
e7c27a73 | 13721 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13722 | { |
5e22e966 | 13723 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13724 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13725 | CORE_ADDR lowpc, highpc; |
13726 | struct die_info *child_die; | |
e142c38c DJ |
13727 | CORE_ADDR baseaddr; |
13728 | ||
b3b3bada | 13729 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13730 | |
13731 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13732 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13733 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13734 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13735 | describe ranges. */ |
e385593e JK |
13736 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13737 | { | |
13738 | case PC_BOUNDS_NOT_PRESENT: | |
13739 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13740 | there was no wrapping by that DW_TAG_lexical_block. | |
13741 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13742 | for (child_die = die->child; | |
13743 | child_die != NULL && child_die->tag; | |
436c571c | 13744 | child_die = child_die->sibling) |
4f7bc5ed TT |
13745 | { |
13746 | /* We might already be processing this DIE. This can happen | |
13747 | in an unusual circumstance -- where a subroutine A | |
13748 | appears lexically in another subroutine B, but A actually | |
13749 | inlines B. The recursion is broken here, rather than in | |
13750 | inherit_abstract_dies, because it seems better to simply | |
13751 | drop concrete children here. */ | |
13752 | if (!child_die->in_process) | |
13753 | process_die (child_die, cu); | |
13754 | } | |
e385593e JK |
13755 | return; |
13756 | case PC_BOUNDS_INVALID: | |
13757 | return; | |
13758 | } | |
3e29f34a MR |
13759 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13760 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13761 | |
c24bdb02 | 13762 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13763 | if (die->child != NULL) |
c906108c | 13764 | { |
639d11d3 | 13765 | child_die = die->child; |
c906108c SS |
13766 | while (child_die && child_die->tag) |
13767 | { | |
e7c27a73 | 13768 | process_die (child_die, cu); |
436c571c | 13769 | child_die = child_die->sibling; |
c906108c SS |
13770 | } |
13771 | } | |
3ea89b92 | 13772 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13773 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13774 | |
c24bdb02 KS |
13775 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13776 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13777 | { |
801e3a5b | 13778 | struct block *block |
c24bdb02 | 13779 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13780 | cstk.start_addr, highpc); |
801e3a5b JB |
13781 | |
13782 | /* Note that recording ranges after traversing children, as we | |
13783 | do here, means that recording a parent's ranges entails | |
13784 | walking across all its children's ranges as they appear in | |
13785 | the address map, which is quadratic behavior. | |
13786 | ||
13787 | It would be nicer to record the parent's ranges before | |
13788 | traversing its children, simply overriding whatever you find | |
13789 | there. But since we don't even decide whether to create a | |
13790 | block until after we've traversed its children, that's hard | |
13791 | to do. */ | |
13792 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13793 | } |
c24bdb02 KS |
13794 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13795 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13796 | } |
13797 | ||
216f72a1 | 13798 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13799 | |
13800 | static void | |
13801 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13802 | { | |
5e22e966 | 13803 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 13804 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 13805 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13806 | CORE_ADDR pc, baseaddr; |
13807 | struct attribute *attr; | |
13808 | struct call_site *call_site, call_site_local; | |
13809 | void **slot; | |
13810 | int nparams; | |
13811 | struct die_info *child_die; | |
13812 | ||
b3b3bada | 13813 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13814 | |
216f72a1 JK |
13815 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13816 | if (attr == NULL) | |
13817 | { | |
13818 | /* This was a pre-DWARF-5 GNU extension alias | |
13819 | for DW_AT_call_return_pc. */ | |
13820 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13821 | } | |
96408a79 SA |
13822 | if (!attr) |
13823 | { | |
b98664d3 | 13824 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13825 | "DIE %s [in module %s]"), |
13826 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13827 | return; |
13828 | } | |
95f982e5 | 13829 | pc = attr->as_address () + baseaddr; |
3e29f34a | 13830 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13831 | |
13832 | if (cu->call_site_htab == NULL) | |
13833 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13834 | NULL, &objfile->objfile_obstack, | |
13835 | hashtab_obstack_allocate, NULL); | |
13836 | call_site_local.pc = pc; | |
13837 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13838 | if (*slot != NULL) | |
13839 | { | |
b98664d3 | 13840 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13841 | "DIE %s [in module %s]"), |
13842 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13843 | objfile_name (objfile)); |
96408a79 SA |
13844 | return; |
13845 | } | |
13846 | ||
13847 | /* Count parameters at the caller. */ | |
13848 | ||
13849 | nparams = 0; | |
13850 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13851 | child_die = child_die->sibling) |
96408a79 | 13852 | { |
216f72a1 JK |
13853 | if (child_die->tag != DW_TAG_call_site_parameter |
13854 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13855 | { |
b98664d3 | 13856 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13857 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13858 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13859 | objfile_name (objfile)); |
96408a79 SA |
13860 | continue; |
13861 | } | |
13862 | ||
13863 | nparams++; | |
13864 | } | |
13865 | ||
224c3ddb SM |
13866 | call_site |
13867 | = ((struct call_site *) | |
13868 | obstack_alloc (&objfile->objfile_obstack, | |
13869 | sizeof (*call_site) | |
13870 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13871 | *slot = call_site; |
13872 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13873 | call_site->pc = pc; | |
13874 | ||
216f72a1 JK |
13875 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13876 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13877 | { |
13878 | struct die_info *func_die; | |
13879 | ||
13880 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13881 | for (func_die = die->parent; | |
13882 | func_die && func_die->tag != DW_TAG_subprogram | |
13883 | && func_die->tag != DW_TAG_subroutine_type; | |
13884 | func_die = func_die->parent); | |
13885 | ||
216f72a1 JK |
13886 | /* DW_AT_call_all_calls is a superset |
13887 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13888 | if (func_die |
216f72a1 | 13889 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13890 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13891 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13892 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13893 | { | |
13894 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13895 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13896 | both the initial caller containing the real return address PC and | |
13897 | the final callee containing the current PC of a chain of tail | |
13898 | calls do not need to have the tail call list complete. But any | |
13899 | function candidate for a virtual tail call frame searched via | |
13900 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13901 | determined unambiguously. */ | |
13902 | } | |
13903 | else | |
13904 | { | |
13905 | struct type *func_type = NULL; | |
13906 | ||
13907 | if (func_die) | |
13908 | func_type = get_die_type (func_die, cu); | |
13909 | if (func_type != NULL) | |
13910 | { | |
78134374 | 13911 | gdb_assert (func_type->code () == TYPE_CODE_FUNC); |
96408a79 SA |
13912 | |
13913 | /* Enlist this call site to the function. */ | |
13914 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13915 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13916 | } | |
13917 | else | |
b98664d3 | 13918 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13919 | "DIE %s [in module %s]"), |
13920 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13921 | } |
13922 | } | |
13923 | ||
216f72a1 JK |
13924 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13925 | if (attr == NULL) | |
13926 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13927 | if (attr == NULL) | |
13928 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13929 | if (attr == NULL) |
216f72a1 JK |
13930 | { |
13931 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13932 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13933 | } | |
96408a79 | 13934 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
9d2246fc | 13935 | if (!attr || (attr->form_is_block () && attr->as_block ()->size == 0)) |
96408a79 | 13936 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13937 | else if (attr->form_is_block ()) |
96408a79 SA |
13938 | { |
13939 | struct dwarf2_locexpr_baton *dlbaton; | |
9d2246fc | 13940 | struct dwarf_block *block = attr->as_block (); |
96408a79 | 13941 | |
8d749320 | 13942 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
9d2246fc TT |
13943 | dlbaton->data = block->data; |
13944 | dlbaton->size = block->size; | |
a50264ba | 13945 | dlbaton->per_objfile = per_objfile; |
96408a79 SA |
13946 | dlbaton->per_cu = cu->per_cu; |
13947 | ||
13948 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13949 | } | |
cd6c91b4 | 13950 | else if (attr->form_is_ref ()) |
96408a79 | 13951 | { |
96408a79 SA |
13952 | struct dwarf2_cu *target_cu = cu; |
13953 | struct die_info *target_die; | |
13954 | ||
ac9ec31b | 13955 | target_die = follow_die_ref (die, attr, &target_cu); |
5e22e966 | 13956 | gdb_assert (target_cu->per_objfile->objfile == objfile); |
96408a79 SA |
13957 | if (die_is_declaration (target_die, target_cu)) |
13958 | { | |
7d45c7c3 | 13959 | const char *target_physname; |
9112db09 JK |
13960 | |
13961 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13962 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13963 | if (target_physname == NULL) |
9112db09 | 13964 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13965 | if (target_physname == NULL) |
b98664d3 | 13966 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13967 | "physname, for referencing DIE %s [in module %s]"), |
13968 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13969 | else |
7d455152 | 13970 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13971 | } |
13972 | else | |
13973 | { | |
13974 | CORE_ADDR lowpc; | |
13975 | ||
13976 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13977 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13978 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13979 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13980 | "low pc, for referencing DIE %s [in module %s]"), |
13981 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13982 | else |
3e29f34a MR |
13983 | { |
13984 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13985 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13986 | } | |
96408a79 SA |
13987 | } |
13988 | } | |
13989 | else | |
b98664d3 | 13990 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13991 | "block nor reference, for DIE %s [in module %s]"), |
13992 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13993 | |
13994 | call_site->per_cu = cu->per_cu; | |
9f47c707 | 13995 | call_site->per_objfile = per_objfile; |
96408a79 SA |
13996 | |
13997 | for (child_die = die->child; | |
13998 | child_die && child_die->tag; | |
436c571c | 13999 | child_die = child_die->sibling) |
96408a79 | 14000 | { |
96408a79 | 14001 | struct call_site_parameter *parameter; |
1788b2d3 | 14002 | struct attribute *loc, *origin; |
96408a79 | 14003 | |
216f72a1 JK |
14004 | if (child_die->tag != DW_TAG_call_site_parameter |
14005 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14006 | { |
14007 | /* Already printed the complaint above. */ | |
14008 | continue; | |
14009 | } | |
14010 | ||
14011 | gdb_assert (call_site->parameter_count < nparams); | |
14012 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14013 | ||
1788b2d3 JK |
14014 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14015 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14016 | register is contained in DW_AT_call_value. */ |
96408a79 | 14017 | |
24c5c679 | 14018 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14019 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14020 | if (origin == NULL) | |
14021 | { | |
14022 | /* This was a pre-DWARF-5 GNU extension alias | |
14023 | for DW_AT_call_parameter. */ | |
14024 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14025 | } | |
cd6c91b4 | 14026 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 14027 | { |
1788b2d3 | 14028 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 14029 | |
0826b30a | 14030 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 14031 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
14032 | { |
14033 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14034 | binding can be done only inside one CU. Such referenced DIE | |
14035 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 14036 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14037 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14038 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14039 | objfile_name (objfile)); |
d76b7dbc JK |
14040 | continue; |
14041 | } | |
9c541725 PA |
14042 | parameter->u.param_cu_off |
14043 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 14044 | } |
4fc6c0d5 | 14045 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 14046 | { |
b98664d3 | 14047 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
14048 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14049 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14050 | continue; |
14051 | } | |
24c5c679 | 14052 | else |
96408a79 | 14053 | { |
9d2246fc TT |
14054 | struct dwarf_block *block = loc->as_block (); |
14055 | ||
24c5c679 | 14056 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
9d2246fc | 14057 | (block->data, &block->data[block->size]); |
24c5c679 JK |
14058 | if (parameter->u.dwarf_reg != -1) |
14059 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
9d2246fc TT |
14060 | else if (dwarf_block_to_sp_offset (gdbarch, block->data, |
14061 | &block->data[block->size], | |
24c5c679 JK |
14062 | ¶meter->u.fb_offset)) |
14063 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14064 | else | |
14065 | { | |
b98664d3 | 14066 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 14067 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 14068 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14069 | "[in module %s]"), |
9d8780f0 | 14070 | sect_offset_str (child_die->sect_off), |
9c541725 | 14071 | objfile_name (objfile)); |
24c5c679 JK |
14072 | continue; |
14073 | } | |
96408a79 SA |
14074 | } |
14075 | ||
216f72a1 JK |
14076 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14077 | if (attr == NULL) | |
14078 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 14079 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 14080 | { |
b98664d3 | 14081 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14082 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14083 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14084 | objfile_name (objfile)); |
96408a79 SA |
14085 | continue; |
14086 | } | |
9d2246fc TT |
14087 | |
14088 | struct dwarf_block *block = attr->as_block (); | |
14089 | parameter->value = block->data; | |
14090 | parameter->value_size = block->size; | |
96408a79 SA |
14091 | |
14092 | /* Parameters are not pre-cleared by memset above. */ | |
14093 | parameter->data_value = NULL; | |
14094 | parameter->data_value_size = 0; | |
14095 | call_site->parameter_count++; | |
14096 | ||
216f72a1 JK |
14097 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14098 | if (attr == NULL) | |
14099 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 14100 | if (attr != nullptr) |
96408a79 | 14101 | { |
4fc6c0d5 | 14102 | if (!attr->form_is_block ()) |
b98664d3 | 14103 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14104 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14105 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14106 | objfile_name (objfile)); |
96408a79 SA |
14107 | else |
14108 | { | |
9d2246fc TT |
14109 | block = attr->as_block (); |
14110 | parameter->data_value = block->data; | |
14111 | parameter->data_value_size = block->size; | |
96408a79 SA |
14112 | } |
14113 | } | |
14114 | } | |
14115 | } | |
14116 | ||
71a3c369 TT |
14117 | /* Helper function for read_variable. If DIE represents a virtual |
14118 | table, then return the type of the concrete object that is | |
14119 | associated with the virtual table. Otherwise, return NULL. */ | |
14120 | ||
14121 | static struct type * | |
14122 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14123 | { | |
14124 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14125 | if (attr == NULL) | |
14126 | return NULL; | |
14127 | ||
14128 | /* Find the type DIE. */ | |
14129 | struct die_info *type_die = NULL; | |
14130 | struct dwarf2_cu *type_cu = cu; | |
14131 | ||
cd6c91b4 | 14132 | if (attr->form_is_ref ()) |
71a3c369 TT |
14133 | type_die = follow_die_ref (die, attr, &type_cu); |
14134 | if (type_die == NULL) | |
14135 | return NULL; | |
14136 | ||
14137 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14138 | return NULL; | |
14139 | return die_containing_type (type_die, type_cu); | |
14140 | } | |
14141 | ||
14142 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14143 | ||
14144 | static void | |
14145 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14146 | { | |
14147 | struct rust_vtable_symbol *storage = NULL; | |
14148 | ||
14149 | if (cu->language == language_rust) | |
14150 | { | |
14151 | struct type *containing_type = rust_containing_type (die, cu); | |
14152 | ||
14153 | if (containing_type != NULL) | |
14154 | { | |
5e22e966 | 14155 | struct objfile *objfile = cu->per_objfile->objfile; |
71a3c369 | 14156 | |
8c14c3a3 | 14157 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol; |
71a3c369 | 14158 | storage->concrete_type = containing_type; |
cf724bc9 | 14159 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14160 | } |
14161 | } | |
14162 | ||
e4a62c65 TV |
14163 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
14164 | struct attribute *abstract_origin | |
14165 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14166 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
14167 | if (res == NULL && loc && abstract_origin) | |
14168 | { | |
14169 | /* We have a variable without a name, but with a location and an abstract | |
14170 | origin. This may be a concrete instance of an abstract variable | |
14171 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
14172 | later. */ | |
14173 | struct dwarf2_cu *origin_cu = cu; | |
14174 | struct die_info *origin_die | |
14175 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
5e22e966 SM |
14176 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14177 | per_objfile->per_bfd->abstract_to_concrete | |
14178 | [origin_die->sect_off].push_back (die->sect_off); | |
e4a62c65 | 14179 | } |
71a3c369 TT |
14180 | } |
14181 | ||
43988095 JK |
14182 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14183 | reading .debug_rnglists. | |
14184 | Callback's type should be: | |
14185 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14186 | Return true if the attributes are present and valid, otherwise, | |
14187 | return false. */ | |
14188 | ||
14189 | template <typename Callback> | |
14190 | static bool | |
14191 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
d0ce17d8 | 14192 | dwarf_tag tag, Callback &&callback) |
43988095 | 14193 | { |
976ca316 SM |
14194 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14195 | struct objfile *objfile = per_objfile->objfile; | |
43988095 | 14196 | bfd *obfd = objfile->obfd; |
43988095 | 14197 | /* Base address selection entry. */ |
2b24b6e4 | 14198 | gdb::optional<CORE_ADDR> base; |
43988095 | 14199 | const gdb_byte *buffer; |
43988095 JK |
14200 | CORE_ADDR baseaddr; |
14201 | bool overflow = false; | |
d0ce17d8 CT |
14202 | ULONGEST addr_index; |
14203 | struct dwarf2_section_info *rnglists_section; | |
43988095 | 14204 | |
43988095 | 14205 | base = cu->base_address; |
d0ce17d8 CT |
14206 | rnglists_section = cu_debug_rnglists_section (cu, tag); |
14207 | rnglists_section->read (objfile); | |
43988095 | 14208 | |
d0ce17d8 | 14209 | if (offset >= rnglists_section->size) |
43988095 | 14210 | { |
b98664d3 | 14211 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
14212 | offset); |
14213 | return false; | |
14214 | } | |
d0ce17d8 | 14215 | buffer = rnglists_section->buffer + offset; |
43988095 | 14216 | |
b3b3bada | 14217 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
14218 | |
14219 | while (1) | |
14220 | { | |
7814882a JK |
14221 | /* Initialize it due to a false compiler warning. */ |
14222 | CORE_ADDR range_beginning = 0, range_end = 0; | |
d0ce17d8 CT |
14223 | const gdb_byte *buf_end = (rnglists_section->buffer |
14224 | + rnglists_section->size); | |
43988095 JK |
14225 | unsigned int bytes_read; |
14226 | ||
14227 | if (buffer == buf_end) | |
14228 | { | |
14229 | overflow = true; | |
14230 | break; | |
14231 | } | |
14232 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14233 | switch (rlet) | |
14234 | { | |
14235 | case DW_RLE_end_of_list: | |
14236 | break; | |
14237 | case DW_RLE_base_address: | |
14238 | if (buffer + cu->header.addr_size > buf_end) | |
14239 | { | |
14240 | overflow = true; | |
14241 | break; | |
14242 | } | |
c8a7a66f | 14243 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14244 | buffer += bytes_read; |
14245 | break; | |
d0ce17d8 CT |
14246 | case DW_RLE_base_addressx: |
14247 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14248 | buffer += bytes_read; | |
14249 | base = read_addr_index (cu, addr_index); | |
14250 | break; | |
43988095 JK |
14251 | case DW_RLE_start_length: |
14252 | if (buffer + cu->header.addr_size > buf_end) | |
14253 | { | |
14254 | overflow = true; | |
14255 | break; | |
14256 | } | |
c8a7a66f TT |
14257 | range_beginning = cu->header.read_address (obfd, buffer, |
14258 | &bytes_read); | |
43988095 JK |
14259 | buffer += bytes_read; |
14260 | range_end = (range_beginning | |
14261 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14262 | buffer += bytes_read; | |
14263 | if (buffer > buf_end) | |
14264 | { | |
14265 | overflow = true; | |
14266 | break; | |
14267 | } | |
14268 | break; | |
d0ce17d8 CT |
14269 | case DW_RLE_startx_length: |
14270 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14271 | buffer += bytes_read; | |
14272 | range_beginning = read_addr_index (cu, addr_index); | |
14273 | if (buffer > buf_end) | |
14274 | { | |
14275 | overflow = true; | |
14276 | break; | |
14277 | } | |
14278 | range_end = (range_beginning | |
14279 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14280 | buffer += bytes_read; | |
14281 | break; | |
43988095 JK |
14282 | case DW_RLE_offset_pair: |
14283 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14284 | buffer += bytes_read; | |
14285 | if (buffer > buf_end) | |
14286 | { | |
14287 | overflow = true; | |
14288 | break; | |
14289 | } | |
14290 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14291 | buffer += bytes_read; | |
14292 | if (buffer > buf_end) | |
14293 | { | |
14294 | overflow = true; | |
14295 | break; | |
14296 | } | |
14297 | break; | |
14298 | case DW_RLE_start_end: | |
14299 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14300 | { | |
14301 | overflow = true; | |
14302 | break; | |
14303 | } | |
c8a7a66f TT |
14304 | range_beginning = cu->header.read_address (obfd, buffer, |
14305 | &bytes_read); | |
43988095 | 14306 | buffer += bytes_read; |
c8a7a66f | 14307 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14308 | buffer += bytes_read; |
14309 | break; | |
d0ce17d8 CT |
14310 | case DW_RLE_startx_endx: |
14311 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14312 | buffer += bytes_read; | |
14313 | range_beginning = read_addr_index (cu, addr_index); | |
14314 | if (buffer > buf_end) | |
14315 | { | |
14316 | overflow = true; | |
14317 | break; | |
14318 | } | |
14319 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14320 | buffer += bytes_read; | |
14321 | range_end = read_addr_index (cu, addr_index); | |
14322 | break; | |
43988095 | 14323 | default: |
b98664d3 | 14324 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14325 | return false; |
14326 | } | |
14327 | if (rlet == DW_RLE_end_of_list || overflow) | |
14328 | break; | |
14329 | if (rlet == DW_RLE_base_address) | |
14330 | continue; | |
14331 | ||
43988095 JK |
14332 | if (range_beginning > range_end) |
14333 | { | |
14334 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14335 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14336 | return false; |
14337 | } | |
14338 | ||
14339 | /* Empty range entries have no effect. */ | |
14340 | if (range_beginning == range_end) | |
14341 | continue; | |
14342 | ||
d0ce17d8 CT |
14343 | /* Only DW_RLE_offset_pair needs the base address added. */ |
14344 | if (rlet == DW_RLE_offset_pair) | |
14345 | { | |
14346 | if (!base.has_value ()) | |
14347 | { | |
14348 | /* We have no valid base address for the DW_RLE_offset_pair. */ | |
14349 | complaint (_("Invalid .debug_rnglists data (no base address for " | |
14350 | "DW_RLE_offset_pair)")); | |
14351 | return false; | |
14352 | } | |
14353 | ||
14354 | range_beginning += *base; | |
14355 | range_end += *base; | |
14356 | } | |
43988095 JK |
14357 | |
14358 | /* A not-uncommon case of bad debug info. | |
14359 | Don't pollute the addrmap with bad data. */ | |
14360 | if (range_beginning + baseaddr == 0 | |
976ca316 | 14361 | && !per_objfile->per_bfd->has_section_at_zero) |
43988095 | 14362 | { |
b98664d3 | 14363 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14364 | " [in module %s]"), objfile_name (objfile)); |
14365 | continue; | |
14366 | } | |
14367 | ||
14368 | callback (range_beginning, range_end); | |
14369 | } | |
14370 | ||
14371 | if (overflow) | |
14372 | { | |
b98664d3 | 14373 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14374 | "for DW_AT_ranges attribute"), |
14375 | offset); | |
14376 | return false; | |
14377 | } | |
14378 | ||
14379 | return true; | |
14380 | } | |
14381 | ||
14382 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14383 | Callback's type should be: | |
14384 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14385 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14386 | |
43988095 | 14387 | template <typename Callback> |
43039443 | 14388 | static int |
d0ce17d8 | 14389 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, dwarf_tag tag, |
43988095 | 14390 | Callback &&callback) |
43039443 | 14391 | { |
5e22e966 SM |
14392 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14393 | struct objfile *objfile = per_objfile->objfile; | |
43039443 JK |
14394 | struct comp_unit_head *cu_header = &cu->header; |
14395 | bfd *obfd = objfile->obfd; | |
14396 | unsigned int addr_size = cu_header->addr_size; | |
14397 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14398 | /* Base address selection entry. */ | |
2b24b6e4 | 14399 | gdb::optional<CORE_ADDR> base; |
43039443 | 14400 | unsigned int dummy; |
d521ce57 | 14401 | const gdb_byte *buffer; |
ff013f42 | 14402 | CORE_ADDR baseaddr; |
43039443 | 14403 | |
43988095 | 14404 | if (cu_header->version >= 5) |
d0ce17d8 | 14405 | return dwarf2_rnglists_process (offset, cu, tag, callback); |
43988095 | 14406 | |
d00adf39 | 14407 | base = cu->base_address; |
43039443 | 14408 | |
5e22e966 SM |
14409 | per_objfile->per_bfd->ranges.read (objfile); |
14410 | if (offset >= per_objfile->per_bfd->ranges.size) | |
43039443 | 14411 | { |
b98664d3 | 14412 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14413 | offset); |
14414 | return 0; | |
14415 | } | |
5e22e966 | 14416 | buffer = per_objfile->per_bfd->ranges.buffer + offset; |
43039443 | 14417 | |
b3b3bada | 14418 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 14419 | |
43039443 JK |
14420 | while (1) |
14421 | { | |
14422 | CORE_ADDR range_beginning, range_end; | |
14423 | ||
c8a7a66f | 14424 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 14425 | buffer += addr_size; |
c8a7a66f | 14426 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
14427 | buffer += addr_size; |
14428 | offset += 2 * addr_size; | |
14429 | ||
14430 | /* An end of list marker is a pair of zero addresses. */ | |
14431 | if (range_beginning == 0 && range_end == 0) | |
14432 | /* Found the end of list entry. */ | |
14433 | break; | |
14434 | ||
14435 | /* Each base address selection entry is a pair of 2 values. | |
14436 | The first is the largest possible address, the second is | |
14437 | the base address. Check for a base address here. */ | |
14438 | if ((range_beginning & mask) == mask) | |
14439 | { | |
28d2bfb9 AB |
14440 | /* If we found the largest possible address, then we already |
14441 | have the base address in range_end. */ | |
14442 | base = range_end; | |
43039443 JK |
14443 | continue; |
14444 | } | |
14445 | ||
2b24b6e4 | 14446 | if (!base.has_value ()) |
43039443 JK |
14447 | { |
14448 | /* We have no valid base address for the ranges | |
14449 | data. */ | |
b98664d3 | 14450 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14451 | return 0; |
14452 | } | |
14453 | ||
9277c30c UW |
14454 | if (range_beginning > range_end) |
14455 | { | |
14456 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14457 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14458 | return 0; |
14459 | } | |
14460 | ||
14461 | /* Empty range entries have no effect. */ | |
14462 | if (range_beginning == range_end) | |
14463 | continue; | |
14464 | ||
2b24b6e4 TT |
14465 | range_beginning += *base; |
14466 | range_end += *base; | |
43039443 | 14467 | |
01093045 DE |
14468 | /* A not-uncommon case of bad debug info. |
14469 | Don't pollute the addrmap with bad data. */ | |
14470 | if (range_beginning + baseaddr == 0 | |
5e22e966 | 14471 | && !per_objfile->per_bfd->has_section_at_zero) |
01093045 | 14472 | { |
b98664d3 | 14473 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14474 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14475 | continue; |
14476 | } | |
14477 | ||
5f46c5a5 JK |
14478 | callback (range_beginning, range_end); |
14479 | } | |
14480 | ||
14481 | return 1; | |
14482 | } | |
14483 | ||
14484 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14485 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14486 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14487 | ||
14488 | static int | |
14489 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14490 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
d0ce17d8 | 14491 | dwarf2_psymtab *ranges_pst, dwarf_tag tag) |
5f46c5a5 | 14492 | { |
5e22e966 | 14493 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14494 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 14495 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14496 | int low_set = 0; |
14497 | CORE_ADDR low = 0; | |
14498 | CORE_ADDR high = 0; | |
14499 | int retval; | |
14500 | ||
d0ce17d8 | 14501 | retval = dwarf2_ranges_process (offset, cu, tag, |
5f46c5a5 JK |
14502 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) |
14503 | { | |
9277c30c | 14504 | if (ranges_pst != NULL) |
3e29f34a MR |
14505 | { |
14506 | CORE_ADDR lowpc; | |
14507 | CORE_ADDR highpc; | |
14508 | ||
79748972 TT |
14509 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14510 | range_beginning + baseaddr) | |
14511 | - baseaddr); | |
14512 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14513 | range_end + baseaddr) | |
14514 | - baseaddr); | |
d320c2b5 TT |
14515 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
14516 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 14517 | } |
ff013f42 | 14518 | |
43039443 JK |
14519 | /* FIXME: This is recording everything as a low-high |
14520 | segment of consecutive addresses. We should have a | |
14521 | data structure for discontiguous block ranges | |
14522 | instead. */ | |
14523 | if (! low_set) | |
14524 | { | |
14525 | low = range_beginning; | |
14526 | high = range_end; | |
14527 | low_set = 1; | |
14528 | } | |
14529 | else | |
14530 | { | |
14531 | if (range_beginning < low) | |
14532 | low = range_beginning; | |
14533 | if (range_end > high) | |
14534 | high = range_end; | |
14535 | } | |
5f46c5a5 JK |
14536 | }); |
14537 | if (!retval) | |
14538 | return 0; | |
43039443 JK |
14539 | |
14540 | if (! low_set) | |
14541 | /* If the first entry is an end-of-list marker, the range | |
14542 | describes an empty scope, i.e. no instructions. */ | |
14543 | return 0; | |
14544 | ||
14545 | if (low_return) | |
14546 | *low_return = low; | |
14547 | if (high_return) | |
14548 | *high_return = high; | |
14549 | return 1; | |
14550 | } | |
14551 | ||
3a2b436a JK |
14552 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14553 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14554 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14555 | |
3a2b436a | 14556 | static enum pc_bounds_kind |
af34e669 | 14557 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14558 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14559 | dwarf2_psymtab *pst) |
c906108c | 14560 | { |
976ca316 | 14561 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
c906108c | 14562 | struct attribute *attr; |
91da1414 | 14563 | struct attribute *attr_high; |
af34e669 DJ |
14564 | CORE_ADDR low = 0; |
14565 | CORE_ADDR high = 0; | |
e385593e | 14566 | enum pc_bounds_kind ret; |
c906108c | 14567 | |
91da1414 MW |
14568 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14569 | if (attr_high) | |
af34e669 | 14570 | { |
e142c38c | 14571 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14572 | if (attr != nullptr) |
91da1414 | 14573 | { |
95f982e5 TT |
14574 | low = attr->as_address (); |
14575 | high = attr_high->as_address (); | |
cd6c91b4 | 14576 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14577 | high += low; |
91da1414 | 14578 | } |
af34e669 DJ |
14579 | else |
14580 | /* Found high w/o low attribute. */ | |
e385593e | 14581 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14582 | |
14583 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14584 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14585 | } |
c906108c | 14586 | else |
af34e669 | 14587 | { |
e142c38c | 14588 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14589 | if (attr != NULL) |
14590 | { | |
18a8505e | 14591 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 | 14592 | We take advantage of the fact that DW_AT_ranges does not appear |
d0ce17d8 CT |
14593 | in DW_TAG_compile_unit of DWO files. |
14594 | ||
14595 | Attributes of the form DW_FORM_rnglistx have already had their | |
14596 | value changed by read_rnglist_index and already include | |
14597 | DW_AT_rnglists_base, so don't need to add the ranges base, | |
14598 | either. */ | |
14599 | int need_ranges_base = (die->tag != DW_TAG_compile_unit | |
14600 | && attr->form != DW_FORM_rnglistx); | |
ab435259 DE |
14601 | unsigned int ranges_offset = (DW_UNSND (attr) |
14602 | + (need_ranges_base | |
14603 | ? cu->ranges_base | |
14604 | : 0)); | |
2e3cf129 | 14605 | |
af34e669 | 14606 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14607 | .debug_ranges section. */ |
d0ce17d8 CT |
14608 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst, |
14609 | die->tag)) | |
e385593e | 14610 | return PC_BOUNDS_INVALID; |
43039443 | 14611 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14612 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14613 | } |
e385593e JK |
14614 | else |
14615 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14616 | } |
c906108c | 14617 | |
48fbe735 | 14618 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14619 | if (high <= low) |
e385593e | 14620 | return PC_BOUNDS_INVALID; |
c906108c SS |
14621 | |
14622 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14623 | eliminate duplicate copies of functions and vtables and such. | |
14624 | The linker will arbitrarily choose one and discard the others. | |
14625 | The AT_*_pc values for such functions refer to local labels in | |
14626 | these sections. If the section from that file was discarded, the | |
14627 | labels are not in the output, so the relocs get a value of 0. | |
14628 | If this is a discarded function, mark the pc bounds as invalid, | |
14629 | so that GDB will ignore it. */ | |
976ca316 | 14630 | if (low == 0 && !per_objfile->per_bfd->has_section_at_zero) |
e385593e | 14631 | return PC_BOUNDS_INVALID; |
c906108c SS |
14632 | |
14633 | *lowpc = low; | |
96408a79 SA |
14634 | if (highpc) |
14635 | *highpc = high; | |
af34e669 | 14636 | return ret; |
c906108c SS |
14637 | } |
14638 | ||
b084d499 JB |
14639 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14640 | its low and high PC addresses. Do nothing if these addresses could not | |
14641 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14642 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14643 | ||
14644 | static void | |
14645 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14646 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14647 | struct dwarf2_cu *cu) | |
14648 | { | |
14649 | CORE_ADDR low, high; | |
14650 | struct die_info *child = die->child; | |
14651 | ||
e385593e | 14652 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14653 | { |
325fac50 PA |
14654 | *lowpc = std::min (*lowpc, low); |
14655 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14656 | } |
14657 | ||
14658 | /* If the language does not allow nested subprograms (either inside | |
14659 | subprograms or lexical blocks), we're done. */ | |
14660 | if (cu->language != language_ada) | |
14661 | return; | |
6e70227d | 14662 | |
b084d499 JB |
14663 | /* Check all the children of the given DIE. If it contains nested |
14664 | subprograms, then check their pc bounds. Likewise, we need to | |
14665 | check lexical blocks as well, as they may also contain subprogram | |
14666 | definitions. */ | |
14667 | while (child && child->tag) | |
14668 | { | |
14669 | if (child->tag == DW_TAG_subprogram | |
14670 | || child->tag == DW_TAG_lexical_block) | |
14671 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 14672 | child = child->sibling; |
b084d499 JB |
14673 | } |
14674 | } | |
14675 | ||
fae299cd DC |
14676 | /* Get the low and high pc's represented by the scope DIE, and store |
14677 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14678 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14679 | ||
14680 | static void | |
14681 | get_scope_pc_bounds (struct die_info *die, | |
14682 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14683 | struct dwarf2_cu *cu) | |
14684 | { | |
14685 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14686 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14687 | CORE_ADDR current_low, current_high; | |
14688 | ||
3a2b436a | 14689 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14690 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14691 | { |
14692 | best_low = current_low; | |
14693 | best_high = current_high; | |
14694 | } | |
14695 | else | |
14696 | { | |
14697 | struct die_info *child = die->child; | |
14698 | ||
14699 | while (child && child->tag) | |
14700 | { | |
14701 | switch (child->tag) { | |
14702 | case DW_TAG_subprogram: | |
b084d499 | 14703 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14704 | break; |
14705 | case DW_TAG_namespace: | |
f55ee35c | 14706 | case DW_TAG_module: |
fae299cd DC |
14707 | /* FIXME: carlton/2004-01-16: Should we do this for |
14708 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14709 | that current GCC's always emit the DIEs corresponding | |
14710 | to definitions of methods of classes as children of a | |
14711 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14712 | the DIEs giving the declarations, which could be | |
14713 | anywhere). But I don't see any reason why the | |
14714 | standards says that they have to be there. */ | |
14715 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14716 | ||
14717 | if (current_low != ((CORE_ADDR) -1)) | |
14718 | { | |
325fac50 PA |
14719 | best_low = std::min (best_low, current_low); |
14720 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14721 | } |
14722 | break; | |
14723 | default: | |
0963b4bd | 14724 | /* Ignore. */ |
fae299cd DC |
14725 | break; |
14726 | } | |
14727 | ||
436c571c | 14728 | child = child->sibling; |
fae299cd DC |
14729 | } |
14730 | } | |
14731 | ||
14732 | *lowpc = best_low; | |
14733 | *highpc = best_high; | |
14734 | } | |
14735 | ||
801e3a5b JB |
14736 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14737 | in DIE. */ | |
380bca97 | 14738 | |
801e3a5b JB |
14739 | static void |
14740 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14741 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14742 | { | |
5e22e966 | 14743 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14744 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14745 | struct attribute *attr; |
91da1414 | 14746 | struct attribute *attr_high; |
801e3a5b | 14747 | |
91da1414 MW |
14748 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14749 | if (attr_high) | |
801e3a5b | 14750 | { |
801e3a5b | 14751 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14752 | if (attr != nullptr) |
801e3a5b | 14753 | { |
95f982e5 TT |
14754 | CORE_ADDR low = attr->as_address (); |
14755 | CORE_ADDR high = attr_high->as_address (); | |
31aa7e4e | 14756 | |
cd6c91b4 | 14757 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14758 | high += low; |
9a619af0 | 14759 | |
3e29f34a MR |
14760 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14761 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14762 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
14763 | } |
14764 | } | |
14765 | ||
14766 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
435d3d88 | 14767 | if (attr != nullptr) |
801e3a5b | 14768 | { |
18a8505e | 14769 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 | 14770 | We take advantage of the fact that DW_AT_ranges does not appear |
d0ce17d8 CT |
14771 | in DW_TAG_compile_unit of DWO files. |
14772 | ||
14773 | Attributes of the form DW_FORM_rnglistx have already had their | |
14774 | value changed by read_rnglist_index and already include | |
14775 | DW_AT_rnglists_base, so don't need to add the ranges base, | |
14776 | either. */ | |
14777 | int need_ranges_base = (die->tag != DW_TAG_compile_unit | |
14778 | && attr->form != DW_FORM_rnglistx); | |
801e3a5b JB |
14779 | |
14780 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14781 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14782 | unsigned long offset = (DW_UNSND (attr) |
14783 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14784 | |
2d5f09ec | 14785 | std::vector<blockrange> blockvec; |
d0ce17d8 | 14786 | dwarf2_ranges_process (offset, cu, die->tag, |
5f46c5a5 JK |
14787 | [&] (CORE_ADDR start, CORE_ADDR end) |
14788 | { | |
58fdfd2c JK |
14789 | start += baseaddr; |
14790 | end += baseaddr; | |
5f46c5a5 JK |
14791 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14792 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14793 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14794 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14795 | }); |
2d5f09ec KB |
14796 | |
14797 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14798 | } |
14799 | } | |
14800 | ||
685b1105 JK |
14801 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14802 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14803 | |
685b1105 JK |
14804 | static void |
14805 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14806 | { |
38360086 | 14807 | int major, minor; |
60d5a603 JK |
14808 | |
14809 | if (cu->producer == NULL) | |
14810 | { | |
14811 | /* For unknown compilers expect their behavior is DWARF version | |
14812 | compliant. | |
14813 | ||
14814 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14815 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14816 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14817 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14818 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14819 | } |
b1ffba5a | 14820 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14821 | { |
38360086 MW |
14822 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14823 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14824 | } |
5230b05a | 14825 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14826 | { |
14827 | cu->producer_is_icc = true; | |
14828 | cu->producer_is_icc_lt_14 = major < 14; | |
14829 | } | |
c258c396 JD |
14830 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14831 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14832 | else |
14833 | { | |
14834 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14835 | compliant. */ | |
60d5a603 JK |
14836 | } |
14837 | ||
9068261f | 14838 | cu->checked_producer = true; |
685b1105 | 14839 | } |
ba919b58 | 14840 | |
685b1105 JK |
14841 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14842 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14843 | during 4.6.0 experimental. */ | |
14844 | ||
9068261f | 14845 | static bool |
685b1105 JK |
14846 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14847 | { | |
14848 | if (!cu->checked_producer) | |
14849 | check_producer (cu); | |
14850 | ||
14851 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14852 | } |
14853 | ||
c258c396 JD |
14854 | |
14855 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14856 | with incorrect is_stmt attributes. */ | |
14857 | ||
14858 | static bool | |
14859 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14860 | { | |
14861 | if (!cu->checked_producer) | |
14862 | check_producer (cu); | |
14863 | ||
14864 | return cu->producer_is_codewarrior; | |
14865 | } | |
14866 | ||
bf23a268 TT |
14867 | /* Return the accessibility of DIE, as given by DW_AT_accessibility. |
14868 | If that attribute is not available, return the appropriate | |
14869 | default. */ | |
60d5a603 JK |
14870 | |
14871 | static enum dwarf_access_attribute | |
bf23a268 | 14872 | dwarf2_access_attribute (struct die_info *die, struct dwarf2_cu *cu) |
60d5a603 | 14873 | { |
bf23a268 TT |
14874 | attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
14875 | if (attr != nullptr) | |
14876 | { | |
14877 | LONGEST value = attr->constant_value (-1); | |
14878 | if (value == DW_ACCESS_public | |
14879 | || value == DW_ACCESS_protected | |
14880 | || value == DW_ACCESS_private) | |
14881 | return (dwarf_access_attribute) value; | |
14882 | complaint (_("Unhandled DW_AT_accessibility value (%s)"), | |
14883 | plongest (value)); | |
14884 | } | |
14885 | ||
60d5a603 JK |
14886 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) |
14887 | { | |
14888 | /* The default DWARF 2 accessibility for members is public, the default | |
14889 | accessibility for inheritance is private. */ | |
14890 | ||
14891 | if (die->tag != DW_TAG_inheritance) | |
14892 | return DW_ACCESS_public; | |
14893 | else | |
14894 | return DW_ACCESS_private; | |
14895 | } | |
14896 | else | |
14897 | { | |
14898 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14899 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14900 | depends on the container kind. */ | |
14901 | ||
14902 | if (die->parent->tag == DW_TAG_class_type) | |
14903 | return DW_ACCESS_private; | |
14904 | else | |
14905 | return DW_ACCESS_public; | |
14906 | } | |
14907 | } | |
14908 | ||
74ac6d43 TT |
14909 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14910 | offset. If the attribute was not found return 0, otherwise return | |
14911 | 1. If it was found but could not properly be handled, set *OFFSET | |
14912 | to 0. */ | |
14913 | ||
14914 | static int | |
14915 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14916 | LONGEST *offset) | |
14917 | { | |
14918 | struct attribute *attr; | |
14919 | ||
14920 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14921 | if (attr != NULL) | |
14922 | { | |
14923 | *offset = 0; | |
14924 | ||
14925 | /* Note that we do not check for a section offset first here. | |
14926 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14927 | so if we see it, we can assume that a constant form is really | |
14928 | a constant and not a section offset. */ | |
cd6c91b4 | 14929 | if (attr->form_is_constant ()) |
0826b30a | 14930 | *offset = attr->constant_value (0); |
cd6c91b4 | 14931 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14932 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14933 | else if (attr->form_is_block ()) |
9d2246fc | 14934 | *offset = decode_locdesc (attr->as_block (), cu); |
74ac6d43 TT |
14935 | else |
14936 | dwarf2_complex_location_expr_complaint (); | |
14937 | ||
14938 | return 1; | |
14939 | } | |
14940 | ||
14941 | return 0; | |
14942 | } | |
14943 | ||
7d79de9a TT |
14944 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
14945 | ||
14946 | static void | |
14947 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14948 | struct field *field) | |
14949 | { | |
14950 | struct attribute *attr; | |
14951 | ||
14952 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14953 | if (attr != NULL) | |
14954 | { | |
14955 | if (attr->form_is_constant ()) | |
14956 | { | |
14957 | LONGEST offset = attr->constant_value (0); | |
14958 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14959 | } | |
14960 | else if (attr->form_is_section_offset ()) | |
14961 | dwarf2_complex_location_expr_complaint (); | |
14962 | else if (attr->form_is_block ()) | |
14963 | { | |
14964 | bool handled; | |
9d2246fc | 14965 | CORE_ADDR offset = decode_locdesc (attr->as_block (), cu, &handled); |
7d79de9a TT |
14966 | if (handled) |
14967 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14968 | else | |
14969 | { | |
5e22e966 SM |
14970 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14971 | struct objfile *objfile = per_objfile->objfile; | |
7d79de9a TT |
14972 | struct dwarf2_locexpr_baton *dlbaton |
14973 | = XOBNEW (&objfile->objfile_obstack, | |
14974 | struct dwarf2_locexpr_baton); | |
9d2246fc TT |
14975 | dlbaton->data = attr->as_block ()->data; |
14976 | dlbaton->size = attr->as_block ()->size; | |
7d79de9a TT |
14977 | /* When using this baton, we want to compute the address |
14978 | of the field, not the value. This is why | |
14979 | is_reference is set to false here. */ | |
14980 | dlbaton->is_reference = false; | |
5e22e966 | 14981 | dlbaton->per_objfile = per_objfile; |
7d79de9a TT |
14982 | dlbaton->per_cu = cu->per_cu; |
14983 | ||
14984 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
14985 | } | |
14986 | } | |
14987 | else | |
14988 | dwarf2_complex_location_expr_complaint (); | |
14989 | } | |
14990 | } | |
14991 | ||
c906108c SS |
14992 | /* Add an aggregate field to the field list. */ |
14993 | ||
14994 | static void | |
107d2387 | 14995 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14996 | struct dwarf2_cu *cu) |
6e70227d | 14997 | { |
5e22e966 | 14998 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14999 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
15000 | struct nextfield *new_field; |
15001 | struct attribute *attr; | |
15002 | struct field *fp; | |
15d034d0 | 15003 | const char *fieldname = ""; |
c906108c | 15004 | |
7d0ccb61 DJ |
15005 | if (die->tag == DW_TAG_inheritance) |
15006 | { | |
be2daae6 TT |
15007 | fip->baseclasses.emplace_back (); |
15008 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
15009 | } |
15010 | else | |
15011 | { | |
be2daae6 TT |
15012 | fip->fields.emplace_back (); |
15013 | new_field = &fip->fields.back (); | |
7d0ccb61 | 15014 | } |
be2daae6 | 15015 | |
9c6a1327 TT |
15016 | new_field->offset = die->sect_off; |
15017 | ||
bf23a268 | 15018 | new_field->accessibility = dwarf2_access_attribute (die, cu); |
c906108c | 15019 | if (new_field->accessibility != DW_ACCESS_public) |
264fc0e2 | 15020 | fip->non_public_fields = true; |
60d5a603 | 15021 | |
e142c38c | 15022 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 15023 | if (attr != nullptr) |
c906108c | 15024 | new_field->virtuality = DW_UNSND (attr); |
60d5a603 JK |
15025 | else |
15026 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15027 | |
15028 | fp = &new_field->field; | |
a9a9bd0f | 15029 | |
e142c38c | 15030 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15031 | { |
a9a9bd0f | 15032 | /* Data member other than a C++ static data member. */ |
6e70227d | 15033 | |
c906108c | 15034 | /* Get type of field. */ |
5d14b6e5 | 15035 | fp->set_type (die_type (die, cu)); |
c906108c | 15036 | |
d6a843b5 | 15037 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15038 | |
c906108c | 15039 | /* Get bit size of field (zero if none). */ |
e142c38c | 15040 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 15041 | if (attr != nullptr) |
c906108c SS |
15042 | { |
15043 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
15044 | } | |
15045 | else | |
15046 | { | |
15047 | FIELD_BITSIZE (*fp) = 0; | |
15048 | } | |
15049 | ||
15050 | /* Get bit offset of field. */ | |
7d79de9a | 15051 | handle_data_member_location (die, cu, fp); |
e142c38c | 15052 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
435d3d88 | 15053 | if (attr != nullptr) |
c906108c | 15054 | { |
d5a22e77 | 15055 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
15056 | { |
15057 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
15058 | additional bit offset from the MSB of the containing |
15059 | anonymous object to the MSB of the field. We don't | |
15060 | have to do anything special since we don't need to | |
15061 | know the size of the anonymous object. */ | |
f41f5e61 | 15062 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
15063 | } |
15064 | else | |
15065 | { | |
15066 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
15067 | MSB of the anonymous object, subtract off the number of |
15068 | bits from the MSB of the field to the MSB of the | |
15069 | object, and then subtract off the number of bits of | |
15070 | the field itself. The result is the bit offset of | |
15071 | the LSB of the field. */ | |
c906108c SS |
15072 | int anonymous_size; |
15073 | int bit_offset = DW_UNSND (attr); | |
15074 | ||
e142c38c | 15075 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15076 | if (attr != nullptr) |
c906108c SS |
15077 | { |
15078 | /* The size of the anonymous object containing | |
15079 | the bit field is explicit, so use the | |
15080 | indicated size (in bytes). */ | |
15081 | anonymous_size = DW_UNSND (attr); | |
15082 | } | |
15083 | else | |
15084 | { | |
15085 | /* The size of the anonymous object containing | |
15086 | the bit field must be inferred from the type | |
15087 | attribute of the data member containing the | |
15088 | bit field. */ | |
5d14b6e5 | 15089 | anonymous_size = TYPE_LENGTH (fp->type ()); |
c906108c | 15090 | } |
f41f5e61 PA |
15091 | SET_FIELD_BITPOS (*fp, |
15092 | (FIELD_BITPOS (*fp) | |
15093 | + anonymous_size * bits_per_byte | |
15094 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15095 | } |
15096 | } | |
da5b30da AA |
15097 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15098 | if (attr != NULL) | |
15099 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 15100 | + attr->constant_value (0))); |
c906108c SS |
15101 | |
15102 | /* Get name of field. */ | |
39cbfefa DJ |
15103 | fieldname = dwarf2_name (die, cu); |
15104 | if (fieldname == NULL) | |
15105 | fieldname = ""; | |
d8151005 DJ |
15106 | |
15107 | /* The name is already allocated along with this objfile, so we don't | |
15108 | need to duplicate it for the type. */ | |
15109 | fp->name = fieldname; | |
c906108c SS |
15110 | |
15111 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 15112 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15113 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15114 | { |
d48cc9dd | 15115 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c | 15116 | new_field->accessibility = DW_ACCESS_private; |
264fc0e2 | 15117 | fip->non_public_fields = true; |
c906108c SS |
15118 | } |
15119 | } | |
a9a9bd0f | 15120 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15121 | { |
a9a9bd0f DC |
15122 | /* C++ static member. */ |
15123 | ||
15124 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15125 | is a declaration, but all versions of G++ as of this writing | |
15126 | (so through at least 3.2.1) incorrectly generate | |
15127 | DW_TAG_variable tags. */ | |
6e70227d | 15128 | |
ff355380 | 15129 | const char *physname; |
c906108c | 15130 | |
a9a9bd0f | 15131 | /* Get name of field. */ |
39cbfefa DJ |
15132 | fieldname = dwarf2_name (die, cu); |
15133 | if (fieldname == NULL) | |
c906108c SS |
15134 | return; |
15135 | ||
254e6b9e | 15136 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15137 | if (attr |
15138 | /* Only create a symbol if this is an external value. | |
15139 | new_symbol checks this and puts the value in the global symbol | |
15140 | table, which we want. If it is not external, new_symbol | |
15141 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15142 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15143 | { |
15144 | /* A static const member, not much different than an enum as far as | |
15145 | we're concerned, except that we can support more types. */ | |
15146 | new_symbol (die, NULL, cu); | |
15147 | } | |
15148 | ||
2df3850c | 15149 | /* Get physical name. */ |
ff355380 | 15150 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15151 | |
d8151005 DJ |
15152 | /* The name is already allocated along with this objfile, so we don't |
15153 | need to duplicate it for the type. */ | |
15154 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
5d14b6e5 | 15155 | fp->set_type (die_type (die, cu)); |
d8151005 | 15156 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15157 | } |
15158 | else if (die->tag == DW_TAG_inheritance) | |
15159 | { | |
74ac6d43 | 15160 | /* C++ base class field. */ |
7d79de9a | 15161 | handle_data_member_location (die, cu, fp); |
c906108c | 15162 | FIELD_BITSIZE (*fp) = 0; |
5d14b6e5 SM |
15163 | fp->set_type (die_type (die, cu)); |
15164 | FIELD_NAME (*fp) = fp->type ()->name (); | |
c906108c | 15165 | } |
2ddeaf8a TT |
15166 | else |
15167 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15168 | } |
15169 | ||
883fd55a KS |
15170 | /* Can the type given by DIE define another type? */ |
15171 | ||
15172 | static bool | |
15173 | type_can_define_types (const struct die_info *die) | |
15174 | { | |
15175 | switch (die->tag) | |
15176 | { | |
15177 | case DW_TAG_typedef: | |
15178 | case DW_TAG_class_type: | |
15179 | case DW_TAG_structure_type: | |
15180 | case DW_TAG_union_type: | |
15181 | case DW_TAG_enumeration_type: | |
15182 | return true; | |
15183 | ||
15184 | default: | |
15185 | return false; | |
15186 | } | |
15187 | } | |
15188 | ||
15189 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15190 | |
15191 | static void | |
883fd55a KS |
15192 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15193 | struct dwarf2_cu *cu) | |
6e70227d | 15194 | { |
be2daae6 TT |
15195 | struct decl_field fp; |
15196 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15197 | |
883fd55a | 15198 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15199 | |
883fd55a | 15200 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15201 | fp.name = dwarf2_name (die, cu); |
15202 | fp.type = read_type_die (die, cu); | |
98751a41 | 15203 | |
c191a687 | 15204 | /* Save accessibility. */ |
bf23a268 | 15205 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
c191a687 KS |
15206 | switch (accessibility) |
15207 | { | |
15208 | case DW_ACCESS_public: | |
15209 | /* The assumed value if neither private nor protected. */ | |
15210 | break; | |
15211 | case DW_ACCESS_private: | |
be2daae6 | 15212 | fp.is_private = 1; |
c191a687 KS |
15213 | break; |
15214 | case DW_ACCESS_protected: | |
be2daae6 | 15215 | fp.is_protected = 1; |
c191a687 | 15216 | break; |
c191a687 KS |
15217 | } |
15218 | ||
883fd55a | 15219 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15220 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15221 | else |
be2daae6 | 15222 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15223 | } |
15224 | ||
9c6a1327 TT |
15225 | /* A convenience typedef that's used when finding the discriminant |
15226 | field for a variant part. */ | |
1b95cdb7 SM |
15227 | typedef std::unordered_map<sect_offset, int, gdb::hash_enum<sect_offset>> |
15228 | offset_map_type; | |
9c6a1327 TT |
15229 | |
15230 | /* Compute the discriminant range for a given variant. OBSTACK is | |
15231 | where the results will be stored. VARIANT is the variant to | |
15232 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
15233 | or unsigned. */ | |
15234 | ||
15235 | static const gdb::array_view<discriminant_range> | |
15236 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
15237 | bool is_unsigned) | |
15238 | { | |
15239 | std::vector<discriminant_range> ranges; | |
15240 | ||
15241 | if (variant.default_branch) | |
15242 | return {}; | |
15243 | ||
15244 | if (variant.discr_list_data == nullptr) | |
15245 | { | |
15246 | discriminant_range r | |
15247 | = {variant.discriminant_value, variant.discriminant_value}; | |
15248 | ranges.push_back (r); | |
15249 | } | |
15250 | else | |
15251 | { | |
15252 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
15253 | variant.discr_list_data->size); | |
15254 | while (!data.empty ()) | |
15255 | { | |
15256 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
15257 | { | |
15258 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
15259 | break; | |
15260 | } | |
15261 | bool is_range = data[0] == DW_DSC_range; | |
15262 | data = data.slice (1); | |
15263 | ||
15264 | ULONGEST low, high; | |
15265 | unsigned int bytes_read; | |
15266 | ||
15267 | if (data.empty ()) | |
15268 | { | |
15269 | complaint (_("DW_AT_discr_list missing low value")); | |
15270 | break; | |
15271 | } | |
15272 | if (is_unsigned) | |
15273 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
15274 | else | |
15275 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
15276 | &bytes_read); | |
15277 | data = data.slice (bytes_read); | |
15278 | ||
15279 | if (is_range) | |
15280 | { | |
15281 | if (data.empty ()) | |
15282 | { | |
15283 | complaint (_("DW_AT_discr_list missing high value")); | |
15284 | break; | |
15285 | } | |
15286 | if (is_unsigned) | |
15287 | high = read_unsigned_leb128 (nullptr, data.data (), | |
15288 | &bytes_read); | |
15289 | else | |
15290 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
15291 | &bytes_read); | |
15292 | data = data.slice (bytes_read); | |
15293 | } | |
15294 | else | |
15295 | high = low; | |
15296 | ||
15297 | ranges.push_back ({ low, high }); | |
15298 | } | |
15299 | } | |
15300 | ||
15301 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
15302 | ranges.size ()); | |
15303 | std::copy (ranges.begin (), ranges.end (), result); | |
15304 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
15305 | } | |
15306 | ||
15307 | static const gdb::array_view<variant_part> create_variant_parts | |
15308 | (struct obstack *obstack, | |
15309 | const offset_map_type &offset_map, | |
15310 | struct field_info *fi, | |
15311 | const std::vector<variant_part_builder> &variant_parts); | |
15312 | ||
15313 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
15314 | the variant to fill in. OBSTACK is where any needed allocations | |
15315 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
15316 | fields for the type. FI describes the fields of the type we're | |
15317 | processing. FIELD is the variant field we're converting. */ | |
15318 | ||
15319 | static void | |
15320 | create_one_variant (variant &result, struct obstack *obstack, | |
15321 | const offset_map_type &offset_map, | |
15322 | struct field_info *fi, const variant_field &field) | |
15323 | { | |
15324 | result.discriminants = convert_variant_range (obstack, field, false); | |
15325 | result.first_field = field.first_field + fi->baseclasses.size (); | |
15326 | result.last_field = field.last_field + fi->baseclasses.size (); | |
15327 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
15328 | field.variant_parts); | |
15329 | } | |
15330 | ||
15331 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
15332 | is the variant part to fill in. OBSTACK is where any needed | |
15333 | allocations will be done. OFFSET_MAP holds the mapping from | |
15334 | section offsets to fields for the type. FI describes the fields of | |
15335 | the type we're processing. BUILDER is the variant part to be | |
15336 | converted. */ | |
15337 | ||
15338 | static void | |
15339 | create_one_variant_part (variant_part &result, | |
15340 | struct obstack *obstack, | |
15341 | const offset_map_type &offset_map, | |
15342 | struct field_info *fi, | |
15343 | const variant_part_builder &builder) | |
15344 | { | |
15345 | auto iter = offset_map.find (builder.discriminant_offset); | |
15346 | if (iter == offset_map.end ()) | |
15347 | { | |
15348 | result.discriminant_index = -1; | |
15349 | /* Doesn't matter. */ | |
15350 | result.is_unsigned = false; | |
15351 | } | |
15352 | else | |
15353 | { | |
15354 | result.discriminant_index = iter->second; | |
15355 | result.is_unsigned | |
c6d940a9 | 15356 | = fi->fields[result.discriminant_index].field.type ()->is_unsigned (); |
9c6a1327 TT |
15357 | } |
15358 | ||
15359 | size_t n = builder.variants.size (); | |
15360 | variant *output = new (obstack) variant[n]; | |
15361 | for (size_t i = 0; i < n; ++i) | |
15362 | create_one_variant (output[i], obstack, offset_map, fi, | |
15363 | builder.variants[i]); | |
15364 | ||
15365 | result.variants = gdb::array_view<variant> (output, n); | |
15366 | } | |
15367 | ||
15368 | /* Create a vector of variant parts that can be attached to a type. | |
15369 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
15370 | holds the mapping from section offsets to fields for the type. FI | |
15371 | describes the fields of the type we're processing. VARIANT_PARTS | |
15372 | is the vector to convert. */ | |
15373 | ||
15374 | static const gdb::array_view<variant_part> | |
15375 | create_variant_parts (struct obstack *obstack, | |
15376 | const offset_map_type &offset_map, | |
15377 | struct field_info *fi, | |
15378 | const std::vector<variant_part_builder> &variant_parts) | |
15379 | { | |
15380 | if (variant_parts.empty ()) | |
15381 | return {}; | |
15382 | ||
15383 | size_t n = variant_parts.size (); | |
15384 | variant_part *result = new (obstack) variant_part[n]; | |
15385 | for (size_t i = 0; i < n; ++i) | |
15386 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
15387 | variant_parts[i]); | |
15388 | ||
15389 | return gdb::array_view<variant_part> (result, n); | |
15390 | } | |
15391 | ||
15392 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
15393 | done. */ | |
15394 | ||
15395 | static void | |
15396 | add_variant_property (struct field_info *fip, struct type *type, | |
15397 | struct dwarf2_cu *cu) | |
15398 | { | |
15399 | /* Map section offsets of fields to their field index. Note the | |
15400 | field index here does not take the number of baseclasses into | |
15401 | account. */ | |
15402 | offset_map_type offset_map; | |
15403 | for (int i = 0; i < fip->fields.size (); ++i) | |
15404 | offset_map[fip->fields[i].offset] = i; | |
15405 | ||
5e22e966 | 15406 | struct objfile *objfile = cu->per_objfile->objfile; |
9c6a1327 TT |
15407 | gdb::array_view<variant_part> parts |
15408 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
15409 | fip->variant_parts); | |
15410 | ||
15411 | struct dynamic_prop prop; | |
8c2e4e06 SM |
15412 | prop.set_variant_parts ((gdb::array_view<variant_part> *) |
15413 | obstack_copy (&objfile->objfile_obstack, &parts, | |
15414 | sizeof (parts))); | |
9c6a1327 | 15415 | |
5c54719c | 15416 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
9c6a1327 TT |
15417 | } |
15418 | ||
c906108c SS |
15419 | /* Create the vector of fields, and attach it to the type. */ |
15420 | ||
15421 | static void | |
fba45db2 | 15422 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15423 | struct dwarf2_cu *cu) |
c906108c | 15424 | { |
317f7127 | 15425 | int nfields = fip->nfields (); |
c906108c SS |
15426 | |
15427 | /* Record the field count, allocate space for the array of fields, | |
15428 | and create blank accessibility bitfields if necessary. */ | |
5e33d5f4 | 15429 | type->set_num_fields (nfields); |
3cabb6b0 SM |
15430 | type->set_fields |
15431 | ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * nfields)); | |
c906108c | 15432 | |
b4ba55a1 | 15433 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15434 | { |
15435 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15436 | ||
15437 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15438 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15439 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15440 | ||
15441 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15442 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15443 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15444 | ||
774b6a14 TT |
15445 | TYPE_FIELD_IGNORE_BITS (type) = |
15446 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15447 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15448 | } |
15449 | ||
15450 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15451 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15452 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15453 | { |
be2daae6 | 15454 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15455 | unsigned char *pointer; |
c906108c SS |
15456 | |
15457 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15458 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15459 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15460 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15461 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15462 | } |
15463 | ||
9c6a1327 TT |
15464 | if (!fip->variant_parts.empty ()) |
15465 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 15466 | |
be2daae6 TT |
15467 | /* Copy the saved-up fields into the field vector. */ |
15468 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15469 | { |
be2daae6 TT |
15470 | struct nextfield &field |
15471 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15472 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15473 | |
ceacbf6e | 15474 | type->field (i) = field.field; |
be2daae6 | 15475 | switch (field.accessibility) |
c906108c | 15476 | { |
c5aa993b | 15477 | case DW_ACCESS_private: |
b4ba55a1 | 15478 | if (cu->language != language_ada) |
be2daae6 | 15479 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15480 | break; |
c906108c | 15481 | |
c5aa993b | 15482 | case DW_ACCESS_protected: |
b4ba55a1 | 15483 | if (cu->language != language_ada) |
be2daae6 | 15484 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15485 | break; |
c906108c | 15486 | |
c5aa993b JM |
15487 | case DW_ACCESS_public: |
15488 | break; | |
c906108c | 15489 | |
c5aa993b JM |
15490 | default: |
15491 | /* Unknown accessibility. Complain and treat it as public. */ | |
15492 | { | |
b98664d3 | 15493 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15494 | field.accessibility); |
c5aa993b JM |
15495 | } |
15496 | break; | |
c906108c | 15497 | } |
be2daae6 | 15498 | if (i < fip->baseclasses.size ()) |
c906108c | 15499 | { |
be2daae6 | 15500 | switch (field.virtuality) |
c906108c | 15501 | { |
c5aa993b JM |
15502 | case DW_VIRTUALITY_virtual: |
15503 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15504 | if (cu->language == language_ada) |
a73c6dcd | 15505 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15506 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15507 | break; |
c906108c SS |
15508 | } |
15509 | } | |
c906108c SS |
15510 | } |
15511 | } | |
15512 | ||
7d27a96d TT |
15513 | /* Return true if this member function is a constructor, false |
15514 | otherwise. */ | |
15515 | ||
15516 | static int | |
15517 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15518 | { | |
15519 | const char *fieldname; | |
fe978cb0 | 15520 | const char *type_name; |
7d27a96d TT |
15521 | int len; |
15522 | ||
15523 | if (die->parent == NULL) | |
15524 | return 0; | |
15525 | ||
15526 | if (die->parent->tag != DW_TAG_structure_type | |
15527 | && die->parent->tag != DW_TAG_union_type | |
15528 | && die->parent->tag != DW_TAG_class_type) | |
15529 | return 0; | |
15530 | ||
15531 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15532 | type_name = dwarf2_name (die->parent, cu); |
15533 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15534 | return 0; |
15535 | ||
15536 | len = strlen (fieldname); | |
fe978cb0 PA |
15537 | return (strncmp (fieldname, type_name, len) == 0 |
15538 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15539 | } |
15540 | ||
e35000a7 TBA |
15541 | /* Check if the given VALUE is a recognized enum |
15542 | dwarf_defaulted_attribute constant according to DWARF5 spec, | |
15543 | Table 7.24. */ | |
15544 | ||
15545 | static bool | |
15546 | is_valid_DW_AT_defaulted (ULONGEST value) | |
15547 | { | |
15548 | switch (value) | |
15549 | { | |
15550 | case DW_DEFAULTED_no: | |
15551 | case DW_DEFAULTED_in_class: | |
15552 | case DW_DEFAULTED_out_of_class: | |
15553 | return true; | |
15554 | } | |
15555 | ||
3142e908 | 15556 | complaint (_("unrecognized DW_AT_defaulted value (%s)"), pulongest (value)); |
e35000a7 TBA |
15557 | return false; |
15558 | } | |
15559 | ||
c906108c SS |
15560 | /* Add a member function to the proper fieldlist. */ |
15561 | ||
15562 | static void | |
107d2387 | 15563 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15564 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15565 | { |
5e22e966 | 15566 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 15567 | struct attribute *attr; |
c906108c | 15568 | int i; |
be2daae6 | 15569 | struct fnfieldlist *flp = nullptr; |
c906108c | 15570 | struct fn_field *fnp; |
15d034d0 | 15571 | const char *fieldname; |
f792889a | 15572 | struct type *this_type; |
c906108c | 15573 | |
b4ba55a1 | 15574 | if (cu->language == language_ada) |
a73c6dcd | 15575 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15576 | |
2df3850c | 15577 | /* Get name of member function. */ |
39cbfefa DJ |
15578 | fieldname = dwarf2_name (die, cu); |
15579 | if (fieldname == NULL) | |
2df3850c | 15580 | return; |
c906108c | 15581 | |
c906108c | 15582 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15583 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15584 | { |
27bfe10e | 15585 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15586 | { |
15587 | flp = &fip->fnfieldlists[i]; | |
15588 | break; | |
15589 | } | |
c906108c SS |
15590 | } |
15591 | ||
be2daae6 TT |
15592 | /* Create a new fnfieldlist if necessary. */ |
15593 | if (flp == nullptr) | |
c906108c | 15594 | { |
be2daae6 TT |
15595 | fip->fnfieldlists.emplace_back (); |
15596 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15597 | flp->name = fieldname; |
be2daae6 | 15598 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15599 | } |
15600 | ||
be2daae6 TT |
15601 | /* Create a new member function field and add it to the vector of |
15602 | fnfieldlists. */ | |
15603 | flp->fnfields.emplace_back (); | |
15604 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15605 | |
15606 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15607 | if (cu->language == language_cplus) |
be2daae6 TT |
15608 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15609 | die, cu); | |
3da10d80 KS |
15610 | else |
15611 | { | |
1d06ead6 | 15612 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15613 | fnp->physname = physname ? physname : ""; |
15614 | } | |
15615 | ||
c906108c | 15616 | fnp->type = alloc_type (objfile); |
f792889a | 15617 | this_type = read_type_die (die, cu); |
78134374 | 15618 | if (this_type && this_type->code () == TYPE_CODE_FUNC) |
c906108c | 15619 | { |
1f704f76 | 15620 | int nparams = this_type->num_fields (); |
c906108c | 15621 | |
f792889a | 15622 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15623 | of the method itself (TYPE_CODE_METHOD). */ |
15624 | smash_to_method_type (fnp->type, type, | |
f792889a | 15625 | TYPE_TARGET_TYPE (this_type), |
80fc5e77 | 15626 | this_type->fields (), |
1f704f76 | 15627 | this_type->num_fields (), |
a409645d | 15628 | this_type->has_varargs ()); |
c906108c SS |
15629 | |
15630 | /* Handle static member functions. | |
c5aa993b | 15631 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15632 | member functions. G++ helps GDB by marking the first |
15633 | parameter for non-static member functions (which is the this | |
15634 | pointer) as artificial. We obtain this information from | |
15635 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15636 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15637 | fnp->voffset = VOFFSET_STATIC; |
15638 | } | |
15639 | else | |
b98664d3 | 15640 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15641 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15642 | |
15643 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15644 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15645 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15646 | |
3e43a32a MS |
15647 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15648 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15649 | |
15650 | /* Get accessibility. */ | |
bf23a268 | 15651 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
60d5a603 | 15652 | switch (accessibility) |
c906108c | 15653 | { |
60d5a603 JK |
15654 | case DW_ACCESS_private: |
15655 | fnp->is_private = 1; | |
15656 | break; | |
15657 | case DW_ACCESS_protected: | |
15658 | fnp->is_protected = 1; | |
15659 | break; | |
c906108c SS |
15660 | } |
15661 | ||
b02dede2 | 15662 | /* Check for artificial methods. */ |
e142c38c | 15663 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15664 | if (attr && DW_UNSND (attr) != 0) |
15665 | fnp->is_artificial = 1; | |
15666 | ||
e35000a7 TBA |
15667 | /* Check for defaulted methods. */ |
15668 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
15669 | if (attr != nullptr && is_valid_DW_AT_defaulted (DW_UNSND (attr))) | |
15670 | fnp->defaulted = (enum dwarf_defaulted_attribute) DW_UNSND (attr); | |
15671 | ||
15672 | /* Check for deleted methods. */ | |
15673 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
15674 | if (attr != nullptr && DW_UNSND (attr) != 0) | |
15675 | fnp->is_deleted = 1; | |
15676 | ||
7d27a96d TT |
15677 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15678 | ||
0d564a31 | 15679 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15680 | function. For older versions of GCC, this is an offset in the |
15681 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15682 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15683 | to the object address. */ |
15684 | ||
e142c38c | 15685 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15686 | if (attr != nullptr) |
8e19ed76 | 15687 | { |
9d2246fc | 15688 | if (attr->form_is_block () && attr->as_block ()->size > 0) |
8e19ed76 | 15689 | { |
9d2246fc TT |
15690 | struct dwarf_block *block = attr->as_block (); |
15691 | ||
15692 | if (block->data[0] == DW_OP_constu) | |
aec5aa8b TT |
15693 | { |
15694 | /* Old-style GCC. */ | |
9d2246fc | 15695 | fnp->voffset = decode_locdesc (block, cu) + 2; |
aec5aa8b | 15696 | } |
9d2246fc TT |
15697 | else if (block->data[0] == DW_OP_deref |
15698 | || (block->size > 1 | |
15699 | && block->data[0] == DW_OP_deref_size | |
15700 | && block->data[1] == cu->header.addr_size)) | |
aec5aa8b | 15701 | { |
9d2246fc | 15702 | fnp->voffset = decode_locdesc (block, cu); |
aec5aa8b TT |
15703 | if ((fnp->voffset % cu->header.addr_size) != 0) |
15704 | dwarf2_complex_location_expr_complaint (); | |
15705 | else | |
15706 | fnp->voffset /= cu->header.addr_size; | |
15707 | fnp->voffset += 2; | |
15708 | } | |
15709 | else | |
15710 | dwarf2_complex_location_expr_complaint (); | |
15711 | ||
15712 | if (!fnp->fcontext) | |
7e993ebf KS |
15713 | { |
15714 | /* If there is no `this' field and no DW_AT_containing_type, | |
15715 | we cannot actually find a base class context for the | |
15716 | vtable! */ | |
1f704f76 | 15717 | if (this_type->num_fields () == 0 |
7e993ebf KS |
15718 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) |
15719 | { | |
b98664d3 | 15720 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15721 | "function \"%s\" (offset %s)"), |
15722 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15723 | } |
15724 | else | |
15725 | { | |
15726 | fnp->fcontext | |
940da03e | 15727 | = TYPE_TARGET_TYPE (this_type->field (0).type ()); |
7e993ebf KS |
15728 | } |
15729 | } | |
aec5aa8b | 15730 | } |
cd6c91b4 | 15731 | else if (attr->form_is_section_offset ()) |
8e19ed76 | 15732 | { |
4d3c2250 | 15733 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15734 | } |
15735 | else | |
15736 | { | |
4d3c2250 KB |
15737 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15738 | fieldname); | |
8e19ed76 | 15739 | } |
0d564a31 | 15740 | } |
d48cc9dd DJ |
15741 | else |
15742 | { | |
15743 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15744 | if (attr && DW_UNSND (attr)) | |
15745 | { | |
15746 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15747 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15748 | "but the vtable offset is not specified"), |
9d8780f0 | 15749 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15750 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15751 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15752 | } | |
15753 | } | |
c906108c SS |
15754 | } |
15755 | ||
15756 | /* Create the vector of member function fields, and attach it to the type. */ | |
15757 | ||
15758 | static void | |
fba45db2 | 15759 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15760 | struct dwarf2_cu *cu) |
c906108c | 15761 | { |
b4ba55a1 | 15762 | if (cu->language == language_ada) |
a73c6dcd | 15763 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15764 | |
c906108c SS |
15765 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15766 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15767 | TYPE_ALLOC (type, |
15768 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15769 | |
be2daae6 | 15770 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15771 | { |
be2daae6 | 15772 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15773 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15774 | |
be2daae6 TT |
15775 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15776 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15777 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15778 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15779 | ||
15780 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15781 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15782 | } |
15783 | ||
be2daae6 | 15784 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15785 | } |
15786 | ||
1168df01 JB |
15787 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15788 | language, zero otherwise. */ | |
15789 | static int | |
15790 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15791 | { | |
15792 | static const char vptr[] = "_vptr"; | |
15793 | ||
9c37b5ae TT |
15794 | /* Look for the C++ form of the vtable. */ |
15795 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15796 | return 1; |
15797 | ||
15798 | return 0; | |
15799 | } | |
15800 | ||
c0dd20ea | 15801 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15802 | functions, with the ABI-specified layout. If TYPE describes |
15803 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15804 | |
15805 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15806 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15807 | |
0b92b5bb TT |
15808 | static void |
15809 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15810 | { |
09e2d7c7 | 15811 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15812 | |
15813 | /* Check for a structure with no name and two children. */ | |
1f704f76 | 15814 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) |
0b92b5bb | 15815 | return; |
c0dd20ea DJ |
15816 | |
15817 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15818 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15819 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15820 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15821 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15822 | return; | |
c0dd20ea DJ |
15823 | |
15824 | /* Find the type of the method. */ | |
940da03e | 15825 | pfn_type = type->field (0).type (); |
c0dd20ea | 15826 | if (pfn_type == NULL |
78134374 SM |
15827 | || pfn_type->code () != TYPE_CODE_PTR |
15828 | || TYPE_TARGET_TYPE (pfn_type)->code () != TYPE_CODE_FUNC) | |
0b92b5bb | 15829 | return; |
c0dd20ea DJ |
15830 | |
15831 | /* Look for the "this" argument. */ | |
15832 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
1f704f76 | 15833 | if (pfn_type->num_fields () == 0 |
940da03e SM |
15834 | /* || pfn_type->field (0).type () == NULL */ |
15835 | || pfn_type->field (0).type ()->code () != TYPE_CODE_PTR) | |
0b92b5bb | 15836 | return; |
c0dd20ea | 15837 | |
940da03e | 15838 | self_type = TYPE_TARGET_TYPE (pfn_type->field (0).type ()); |
0b92b5bb | 15839 | new_type = alloc_type (objfile); |
09e2d7c7 | 15840 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
80fc5e77 | 15841 | pfn_type->fields (), pfn_type->num_fields (), |
a409645d | 15842 | pfn_type->has_varargs ()); |
0b92b5bb | 15843 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15844 | } |
1168df01 | 15845 | |
2b4424c3 TT |
15846 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15847 | appropriate error checking and issuing complaints if there is a | |
15848 | problem. */ | |
15849 | ||
15850 | static ULONGEST | |
15851 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15852 | { | |
15853 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15854 | ||
15855 | if (attr == nullptr) | |
15856 | return 0; | |
15857 | ||
cd6c91b4 | 15858 | if (!attr->form_is_constant ()) |
2b4424c3 | 15859 | { |
b98664d3 | 15860 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15861 | " - DIE at %s [in module %s]"), |
15862 | sect_offset_str (die->sect_off), | |
5e22e966 | 15863 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15864 | return 0; |
15865 | } | |
15866 | ||
15867 | ULONGEST align; | |
15868 | if (attr->form == DW_FORM_sdata) | |
15869 | { | |
1bc397c5 | 15870 | LONGEST val = attr->as_signed (); |
2b4424c3 TT |
15871 | if (val < 0) |
15872 | { | |
b98664d3 | 15873 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15874 | " - DIE at %s [in module %s]"), |
15875 | sect_offset_str (die->sect_off), | |
5e22e966 | 15876 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15877 | return 0; |
15878 | } | |
15879 | align = val; | |
15880 | } | |
15881 | else | |
15882 | align = DW_UNSND (attr); | |
15883 | ||
15884 | if (align == 0) | |
15885 | { | |
b98664d3 | 15886 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15887 | " - DIE at %s [in module %s]"), |
15888 | sect_offset_str (die->sect_off), | |
5e22e966 | 15889 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15890 | return 0; |
15891 | } | |
15892 | if ((align & (align - 1)) != 0) | |
15893 | { | |
b98664d3 | 15894 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15895 | " - DIE at %s [in module %s]"), |
15896 | sect_offset_str (die->sect_off), | |
5e22e966 | 15897 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15898 | return 0; |
15899 | } | |
15900 | ||
15901 | return align; | |
15902 | } | |
15903 | ||
15904 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15905 | the alignment for TYPE. */ | |
15906 | ||
15907 | static void | |
15908 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15909 | struct type *type) | |
15910 | { | |
15911 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15912 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15913 | " - DIE at %s [in module %s]"), |
15914 | sect_offset_str (die->sect_off), | |
5e22e966 | 15915 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 15916 | } |
685b1105 | 15917 | |
e35000a7 TBA |
15918 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15919 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15920 | ||
15921 | static bool | |
15922 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15923 | { | |
15924 | switch (value) | |
15925 | { | |
15926 | case DW_CC_normal: | |
15927 | case DW_CC_pass_by_reference: | |
15928 | case DW_CC_pass_by_value: | |
15929 | return true; | |
15930 | ||
15931 | default: | |
15932 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15933 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
15934 | return false; |
15935 | } | |
15936 | } | |
15937 | ||
d0922fcf TBA |
15938 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15939 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
15940 | also according to GNU-specific values (see include/dwarf2.h). */ | |
15941 | ||
15942 | static bool | |
15943 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
15944 | { | |
15945 | switch (value) | |
15946 | { | |
15947 | case DW_CC_normal: | |
15948 | case DW_CC_program: | |
15949 | case DW_CC_nocall: | |
15950 | return true; | |
15951 | ||
15952 | case DW_CC_GNU_renesas_sh: | |
15953 | case DW_CC_GNU_borland_fastcall_i386: | |
15954 | case DW_CC_GDB_IBM_OpenCL: | |
15955 | return true; | |
15956 | ||
15957 | default: | |
15958 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15959 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
15960 | return false; |
15961 | } | |
15962 | } | |
15963 | ||
c906108c | 15964 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15965 | (definition) to create a type for the structure or union. Fill in |
15966 | the type's name and general properties; the members will not be | |
83655187 DE |
15967 | processed until process_structure_scope. A symbol table entry for |
15968 | the type will also not be done until process_structure_scope (assuming | |
15969 | the type has a name). | |
c906108c | 15970 | |
c767944b DJ |
15971 | NOTE: we need to call these functions regardless of whether or not the |
15972 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15973 | structure or union. This gets the type entered into our set of |
83655187 | 15974 | user defined types. */ |
c906108c | 15975 | |
f792889a | 15976 | static struct type * |
134d01f1 | 15977 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15978 | { |
5e22e966 | 15979 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
15980 | struct type *type; |
15981 | struct attribute *attr; | |
15d034d0 | 15982 | const char *name; |
c906108c | 15983 | |
348e048f DE |
15984 | /* If the definition of this type lives in .debug_types, read that type. |
15985 | Don't follow DW_AT_specification though, that will take us back up | |
15986 | the chain and we want to go down. */ | |
052c8bb8 | 15987 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15988 | if (attr != nullptr) |
348e048f | 15989 | { |
ac9ec31b | 15990 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15991 | |
ac9ec31b | 15992 | /* The type's CU may not be the same as CU. |
02142a6c | 15993 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15994 | return set_die_type (die, type, cu); |
15995 | } | |
15996 | ||
c0dd20ea | 15997 | type = alloc_type (objfile); |
c906108c | 15998 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15999 | |
39cbfefa DJ |
16000 | name = dwarf2_name (die, cu); |
16001 | if (name != NULL) | |
c906108c | 16002 | { |
987504bb | 16003 | if (cu->language == language_cplus |
c44af4eb TT |
16004 | || cu->language == language_d |
16005 | || cu->language == language_rust) | |
63d06c5c | 16006 | { |
15d034d0 | 16007 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
16008 | |
16009 | /* dwarf2_full_name might have already finished building the DIE's | |
16010 | type. If so, there is no need to continue. */ | |
16011 | if (get_die_type (die, cu) != NULL) | |
16012 | return get_die_type (die, cu); | |
16013 | ||
d0e39ea2 | 16014 | type->set_name (full_name); |
63d06c5c DC |
16015 | } |
16016 | else | |
16017 | { | |
d8151005 DJ |
16018 | /* The name is already allocated along with this objfile, so |
16019 | we don't need to duplicate it for the type. */ | |
d0e39ea2 | 16020 | type->set_name (name); |
63d06c5c | 16021 | } |
c906108c SS |
16022 | } |
16023 | ||
16024 | if (die->tag == DW_TAG_structure_type) | |
16025 | { | |
67607e24 | 16026 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
16027 | } |
16028 | else if (die->tag == DW_TAG_union_type) | |
16029 | { | |
67607e24 | 16030 | type->set_code (TYPE_CODE_UNION); |
c906108c SS |
16031 | } |
16032 | else | |
16033 | { | |
67607e24 | 16034 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
16035 | } |
16036 | ||
0cc2414c TT |
16037 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
16038 | TYPE_DECLARED_CLASS (type) = 1; | |
16039 | ||
e35000a7 TBA |
16040 | /* Store the calling convention in the type if it's available in |
16041 | the die. Otherwise the calling convention remains set to | |
16042 | the default value DW_CC_normal. */ | |
16043 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
16044 | if (attr != nullptr | |
16045 | && is_valid_DW_AT_calling_convention_for_type (DW_UNSND (attr))) | |
16046 | { | |
16047 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16048 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
16049 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
16050 | } | |
16051 | ||
e142c38c | 16052 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16053 | if (attr != nullptr) |
c906108c | 16054 | { |
cd6c91b4 | 16055 | if (attr->form_is_constant ()) |
155bfbd3 JB |
16056 | TYPE_LENGTH (type) = DW_UNSND (attr); |
16057 | else | |
16058 | { | |
f8e89861 | 16059 | struct dynamic_prop prop; |
293e7e51 | 16060 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 16061 | type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); |
155bfbd3 JB |
16062 | TYPE_LENGTH (type) = 0; |
16063 | } | |
c906108c SS |
16064 | } |
16065 | else | |
16066 | { | |
16067 | TYPE_LENGTH (type) = 0; | |
16068 | } | |
16069 | ||
2b4424c3 TT |
16070 | maybe_set_alignment (cu, die, type); |
16071 | ||
5230b05a | 16072 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 16073 | { |
5230b05a WT |
16074 | /* ICC<14 does not output the required DW_AT_declaration on |
16075 | incomplete types, but gives them a size of zero. */ | |
b4b73759 | 16076 | type->set_is_stub (true); |
685b1105 JK |
16077 | } |
16078 | else | |
9baccff6 | 16079 | type->set_stub_is_supported (true); |
685b1105 | 16080 | |
dc718098 | 16081 | if (die_is_declaration (die, cu)) |
b4b73759 | 16082 | type->set_is_stub (true); |
a6c727b2 DJ |
16083 | else if (attr == NULL && die->child == NULL |
16084 | && producer_is_realview (cu->producer)) | |
16085 | /* RealView does not output the required DW_AT_declaration | |
16086 | on incomplete types. */ | |
b4b73759 | 16087 | type->set_is_stub (true); |
dc718098 | 16088 | |
c906108c SS |
16089 | /* We need to add the type field to the die immediately so we don't |
16090 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 16091 | type within the structure itself. */ |
1c379e20 | 16092 | set_die_type (die, type, cu); |
c906108c | 16093 | |
7e314c57 JK |
16094 | /* set_die_type should be already done. */ |
16095 | set_descriptive_type (type, die, cu); | |
16096 | ||
c767944b DJ |
16097 | return type; |
16098 | } | |
16099 | ||
9c6a1327 TT |
16100 | static void handle_struct_member_die |
16101 | (struct die_info *child_die, | |
16102 | struct type *type, | |
16103 | struct field_info *fi, | |
16104 | std::vector<struct symbol *> *template_args, | |
16105 | struct dwarf2_cu *cu); | |
16106 | ||
16107 | /* A helper for handle_struct_member_die that handles | |
16108 | DW_TAG_variant_part. */ | |
16109 | ||
16110 | static void | |
16111 | handle_variant_part (struct die_info *die, struct type *type, | |
16112 | struct field_info *fi, | |
16113 | std::vector<struct symbol *> *template_args, | |
16114 | struct dwarf2_cu *cu) | |
16115 | { | |
16116 | variant_part_builder *new_part; | |
16117 | if (fi->current_variant_part == nullptr) | |
16118 | { | |
16119 | fi->variant_parts.emplace_back (); | |
16120 | new_part = &fi->variant_parts.back (); | |
16121 | } | |
16122 | else if (!fi->current_variant_part->processing_variant) | |
16123 | { | |
16124 | complaint (_("nested DW_TAG_variant_part seen " | |
16125 | "- DIE at %s [in module %s]"), | |
16126 | sect_offset_str (die->sect_off), | |
5e22e966 | 16127 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16128 | return; |
16129 | } | |
16130 | else | |
16131 | { | |
16132 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
16133 | current.variant_parts.emplace_back (); | |
16134 | new_part = ¤t.variant_parts.back (); | |
16135 | } | |
16136 | ||
16137 | /* When we recurse, we want callees to add to this new variant | |
16138 | part. */ | |
16139 | scoped_restore save_current_variant_part | |
16140 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
16141 | ||
16142 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
16143 | if (discr == NULL) | |
16144 | { | |
16145 | /* It's a univariant form, an extension we support. */ | |
16146 | } | |
16147 | else if (discr->form_is_ref ()) | |
16148 | { | |
16149 | struct dwarf2_cu *target_cu = cu; | |
16150 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16151 | ||
16152 | new_part->discriminant_offset = target_die->sect_off; | |
16153 | } | |
16154 | else | |
16155 | { | |
16156 | complaint (_("DW_AT_discr does not have DIE reference form" | |
16157 | " - DIE at %s [in module %s]"), | |
16158 | sect_offset_str (die->sect_off), | |
5e22e966 | 16159 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16160 | } |
16161 | ||
16162 | for (die_info *child_die = die->child; | |
16163 | child_die != NULL; | |
16164 | child_die = child_die->sibling) | |
16165 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
16166 | } | |
16167 | ||
16168 | /* A helper for handle_struct_member_die that handles | |
16169 | DW_TAG_variant. */ | |
16170 | ||
16171 | static void | |
16172 | handle_variant (struct die_info *die, struct type *type, | |
16173 | struct field_info *fi, | |
16174 | std::vector<struct symbol *> *template_args, | |
16175 | struct dwarf2_cu *cu) | |
16176 | { | |
16177 | if (fi->current_variant_part == nullptr) | |
16178 | { | |
16179 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
16180 | "- DIE at %s [in module %s]"), | |
16181 | sect_offset_str (die->sect_off), | |
5e22e966 | 16182 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16183 | return; |
16184 | } | |
16185 | if (fi->current_variant_part->processing_variant) | |
16186 | { | |
16187 | complaint (_("nested DW_TAG_variant seen " | |
16188 | "- DIE at %s [in module %s]"), | |
16189 | sect_offset_str (die->sect_off), | |
5e22e966 | 16190 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16191 | return; |
16192 | } | |
16193 | ||
16194 | scoped_restore save_processing_variant | |
16195 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
16196 | true); | |
16197 | ||
16198 | fi->current_variant_part->variants.emplace_back (); | |
16199 | variant_field &variant = fi->current_variant_part->variants.back (); | |
16200 | variant.first_field = fi->fields.size (); | |
16201 | ||
16202 | /* In a variant we want to get the discriminant and also add a | |
16203 | field for our sole member child. */ | |
16204 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
16205 | if (discr == nullptr) | |
16206 | { | |
16207 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
9d2246fc | 16208 | if (discr == nullptr || discr->as_block ()->size == 0) |
9c6a1327 TT |
16209 | variant.default_branch = true; |
16210 | else | |
9d2246fc | 16211 | variant.discr_list_data = discr->as_block (); |
9c6a1327 TT |
16212 | } |
16213 | else | |
16214 | variant.discriminant_value = DW_UNSND (discr); | |
16215 | ||
16216 | for (die_info *variant_child = die->child; | |
16217 | variant_child != NULL; | |
16218 | variant_child = variant_child->sibling) | |
16219 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
16220 | ||
16221 | variant.last_field = fi->fields.size (); | |
16222 | } | |
16223 | ||
2ddeaf8a TT |
16224 | /* A helper for process_structure_scope that handles a single member |
16225 | DIE. */ | |
16226 | ||
16227 | static void | |
16228 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
16229 | struct field_info *fi, | |
16230 | std::vector<struct symbol *> *template_args, | |
16231 | struct dwarf2_cu *cu) | |
16232 | { | |
16233 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 16234 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
16235 | { |
16236 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
16237 | should be a DW_TAG_member that is a declaration, but | |
16238 | all versions of G++ as of this writing (so through at | |
16239 | least 3.2.1) incorrectly generate DW_TAG_variable | |
16240 | tags for them instead. */ | |
16241 | dwarf2_add_field (fi, child_die, cu); | |
16242 | } | |
16243 | else if (child_die->tag == DW_TAG_subprogram) | |
16244 | { | |
16245 | /* Rust doesn't have member functions in the C++ sense. | |
16246 | However, it does emit ordinary functions as children | |
16247 | of a struct DIE. */ | |
16248 | if (cu->language == language_rust) | |
16249 | read_func_scope (child_die, cu); | |
16250 | else | |
16251 | { | |
16252 | /* C++ member function. */ | |
16253 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
16254 | } | |
16255 | } | |
16256 | else if (child_die->tag == DW_TAG_inheritance) | |
16257 | { | |
16258 | /* C++ base class field. */ | |
16259 | dwarf2_add_field (fi, child_die, cu); | |
16260 | } | |
16261 | else if (type_can_define_types (child_die)) | |
16262 | dwarf2_add_type_defn (fi, child_die, cu); | |
16263 | else if (child_die->tag == DW_TAG_template_type_param | |
16264 | || child_die->tag == DW_TAG_template_value_param) | |
16265 | { | |
16266 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
16267 | ||
16268 | if (arg != NULL) | |
16269 | template_args->push_back (arg); | |
16270 | } | |
9c6a1327 TT |
16271 | else if (child_die->tag == DW_TAG_variant_part) |
16272 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 16273 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 16274 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
16275 | } |
16276 | ||
c767944b DJ |
16277 | /* Finish creating a structure or union type, including filling in |
16278 | its members and creating a symbol for it. */ | |
16279 | ||
16280 | static void | |
16281 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16282 | { | |
5e22e966 | 16283 | struct objfile *objfile = cu->per_objfile->objfile; |
ca040673 | 16284 | struct die_info *child_die; |
c767944b DJ |
16285 | struct type *type; |
16286 | ||
16287 | type = get_die_type (die, cu); | |
16288 | if (type == NULL) | |
16289 | type = read_structure_type (die, cu); | |
16290 | ||
3e1d3d8c | 16291 | bool has_template_parameters = false; |
e142c38c | 16292 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16293 | { |
16294 | struct field_info fi; | |
2f4732b0 | 16295 | std::vector<struct symbol *> template_args; |
c906108c | 16296 | |
639d11d3 | 16297 | child_die = die->child; |
c906108c SS |
16298 | |
16299 | while (child_die && child_die->tag) | |
16300 | { | |
2ddeaf8a | 16301 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 16302 | child_die = child_die->sibling; |
c906108c SS |
16303 | } |
16304 | ||
34eaf542 | 16305 | /* Attach template arguments to type. */ |
2f4732b0 | 16306 | if (!template_args.empty ()) |
34eaf542 | 16307 | { |
3e1d3d8c | 16308 | has_template_parameters = true; |
34eaf542 | 16309 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16310 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16311 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16312 | = XOBNEWVEC (&objfile->objfile_obstack, |
16313 | struct symbol *, | |
16314 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16315 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16316 | template_args.data (), |
34eaf542 TT |
16317 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16318 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16319 | } |
16320 | ||
c906108c | 16321 | /* Attach fields and member functions to the type. */ |
317f7127 | 16322 | if (fi.nfields () > 0) |
e7c27a73 | 16323 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16324 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16325 | { |
e7c27a73 | 16326 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16327 | |
c5aa993b | 16328 | /* Get the type which refers to the base class (possibly this |
c906108c | 16329 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16330 | class from the DW_AT_containing_type attribute. This use of |
16331 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16332 | |
e142c38c | 16333 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16334 | { |
e7c27a73 | 16335 | struct type *t = die_containing_type (die, cu); |
c906108c | 16336 | |
ae6ae975 | 16337 | set_type_vptr_basetype (type, t); |
c906108c SS |
16338 | if (type == t) |
16339 | { | |
c906108c SS |
16340 | int i; |
16341 | ||
16342 | /* Our own class provides vtbl ptr. */ | |
1f704f76 | 16343 | for (i = t->num_fields () - 1; |
c906108c SS |
16344 | i >= TYPE_N_BASECLASSES (t); |
16345 | --i) | |
16346 | { | |
0d5cff50 | 16347 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16348 | |
1168df01 | 16349 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16350 | { |
ae6ae975 | 16351 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16352 | break; |
16353 | } | |
16354 | } | |
16355 | ||
16356 | /* Complain if virtual function table field not found. */ | |
16357 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16358 | complaint (_("virtual function table pointer " |
3e43a32a | 16359 | "not found when defining class '%s'"), |
7d93a1e0 | 16360 | type->name () ? type->name () : ""); |
c906108c SS |
16361 | } |
16362 | else | |
16363 | { | |
ae6ae975 | 16364 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16365 | } |
16366 | } | |
f6235d4c | 16367 | else if (cu->producer |
61012eef | 16368 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16369 | { |
16370 | /* The IBM XLC compiler does not provide direct indication | |
16371 | of the containing type, but the vtable pointer is | |
16372 | always named __vfp. */ | |
16373 | ||
16374 | int i; | |
16375 | ||
1f704f76 | 16376 | for (i = type->num_fields () - 1; |
f6235d4c EZ |
16377 | i >= TYPE_N_BASECLASSES (type); |
16378 | --i) | |
16379 | { | |
16380 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16381 | { | |
ae6ae975 DE |
16382 | set_type_vptr_fieldno (type, i); |
16383 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16384 | break; |
16385 | } | |
16386 | } | |
16387 | } | |
c906108c | 16388 | } |
98751a41 JK |
16389 | |
16390 | /* Copy fi.typedef_field_list linked list elements content into the | |
16391 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16392 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16393 | { |
be2daae6 | 16394 | int count = fi.typedef_field_list.size (); |
98751a41 | 16395 | |
a0d7a4ff | 16396 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16397 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16398 | = ((struct decl_field *) |
be2daae6 TT |
16399 | TYPE_ALLOC (type, |
16400 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16401 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16402 | |
be2daae6 TT |
16403 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16404 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16405 | } |
c767944b | 16406 | |
883fd55a KS |
16407 | /* Copy fi.nested_types_list linked list elements content into the |
16408 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16409 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16410 | { |
be2daae6 | 16411 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16412 | |
16413 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16414 | TYPE_NESTED_TYPES_ARRAY (type) | |
16415 | = ((struct decl_field *) | |
be2daae6 TT |
16416 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16417 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16418 | |
be2daae6 TT |
16419 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16420 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16421 | } |
c906108c | 16422 | } |
63d06c5c | 16423 | |
bb5ed363 | 16424 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16425 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16426 | cu->rust_unions.push_back (type); | |
0b92b5bb | 16427 | |
90aeadfc DC |
16428 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16429 | snapshots) has been known to create a die giving a declaration | |
16430 | for a class that has, as a child, a die giving a definition for a | |
16431 | nested class. So we have to process our children even if the | |
16432 | current die is a declaration. Normally, of course, a declaration | |
16433 | won't have any children at all. */ | |
134d01f1 | 16434 | |
ca040673 DE |
16435 | child_die = die->child; |
16436 | ||
90aeadfc DC |
16437 | while (child_die != NULL && child_die->tag) |
16438 | { | |
16439 | if (child_die->tag == DW_TAG_member | |
16440 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16441 | || child_die->tag == DW_TAG_inheritance |
16442 | || child_die->tag == DW_TAG_template_value_param | |
16443 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16444 | { |
90aeadfc | 16445 | /* Do nothing. */ |
134d01f1 | 16446 | } |
90aeadfc DC |
16447 | else |
16448 | process_die (child_die, cu); | |
134d01f1 | 16449 | |
436c571c | 16450 | child_die = child_die->sibling; |
134d01f1 DJ |
16451 | } |
16452 | ||
fa4028e9 JB |
16453 | /* Do not consider external references. According to the DWARF standard, |
16454 | these DIEs are identified by the fact that they have no byte_size | |
16455 | attribute, and a declaration attribute. */ | |
16456 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15cd93d0 TV |
16457 | || !die_is_declaration (die, cu) |
16458 | || dwarf2_attr (die, DW_AT_signature, cu) != NULL) | |
3e1d3d8c TT |
16459 | { |
16460 | struct symbol *sym = new_symbol (die, type, cu); | |
16461 | ||
16462 | if (has_template_parameters) | |
16463 | { | |
a776957c TT |
16464 | struct symtab *symtab; |
16465 | if (sym != nullptr) | |
16466 | symtab = symbol_symtab (sym); | |
16467 | else if (cu->line_header != nullptr) | |
16468 | { | |
16469 | /* Any related symtab will do. */ | |
16470 | symtab | |
7ba99d21 | 16471 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
16472 | } |
16473 | else | |
16474 | { | |
16475 | symtab = nullptr; | |
16476 | complaint (_("could not find suitable " | |
16477 | "symtab for template parameter" | |
16478 | " - DIE at %s [in module %s]"), | |
16479 | sect_offset_str (die->sect_off), | |
16480 | objfile_name (objfile)); | |
16481 | } | |
16482 | ||
16483 | if (symtab != nullptr) | |
16484 | { | |
16485 | /* Make sure that the symtab is set on the new symbols. | |
16486 | Even though they don't appear in this symtab directly, | |
16487 | other parts of gdb assume that symbols do, and this is | |
16488 | reasonably true. */ | |
16489 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16490 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16491 | } | |
3e1d3d8c TT |
16492 | } |
16493 | } | |
134d01f1 DJ |
16494 | } |
16495 | ||
ed6acedd TT |
16496 | /* Assuming DIE is an enumeration type, and TYPE is its associated |
16497 | type, update TYPE using some information only available in DIE's | |
16498 | children. In particular, the fields are computed. */ | |
55426c9d JB |
16499 | |
16500 | static void | |
16501 | update_enumeration_type_from_children (struct die_info *die, | |
16502 | struct type *type, | |
16503 | struct dwarf2_cu *cu) | |
16504 | { | |
60f7655a | 16505 | struct die_info *child_die; |
55426c9d JB |
16506 | int unsigned_enum = 1; |
16507 | int flag_enum = 1; | |
55426c9d | 16508 | |
8268c778 | 16509 | auto_obstack obstack; |
ed6acedd | 16510 | std::vector<struct field> fields; |
55426c9d | 16511 | |
60f7655a DE |
16512 | for (child_die = die->child; |
16513 | child_die != NULL && child_die->tag; | |
436c571c | 16514 | child_die = child_die->sibling) |
55426c9d JB |
16515 | { |
16516 | struct attribute *attr; | |
16517 | LONGEST value; | |
16518 | const gdb_byte *bytes; | |
16519 | struct dwarf2_locexpr_baton *baton; | |
16520 | const char *name; | |
60f7655a | 16521 | |
55426c9d JB |
16522 | if (child_die->tag != DW_TAG_enumerator) |
16523 | continue; | |
16524 | ||
16525 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16526 | if (attr == NULL) | |
16527 | continue; | |
16528 | ||
16529 | name = dwarf2_name (child_die, cu); | |
16530 | if (name == NULL) | |
16531 | name = "<anonymous enumerator>"; | |
16532 | ||
16533 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16534 | &value, &bytes, &baton); | |
16535 | if (value < 0) | |
16536 | { | |
16537 | unsigned_enum = 0; | |
16538 | flag_enum = 0; | |
16539 | } | |
55426c9d | 16540 | else |
edd45eb0 SM |
16541 | { |
16542 | if (count_one_bits_ll (value) >= 2) | |
16543 | flag_enum = 0; | |
edd45eb0 | 16544 | } |
55426c9d | 16545 | |
ed6acedd TT |
16546 | fields.emplace_back (); |
16547 | struct field &field = fields.back (); | |
16548 | FIELD_NAME (field) = dwarf2_physname (name, child_die, cu); | |
16549 | SET_FIELD_ENUMVAL (field, value); | |
16550 | } | |
16551 | ||
16552 | if (!fields.empty ()) | |
16553 | { | |
5e33d5f4 | 16554 | type->set_num_fields (fields.size ()); |
3cabb6b0 SM |
16555 | type->set_fields |
16556 | ((struct field *) | |
16557 | TYPE_ALLOC (type, sizeof (struct field) * fields.size ())); | |
80fc5e77 | 16558 | memcpy (type->fields (), fields.data (), |
ed6acedd | 16559 | sizeof (struct field) * fields.size ()); |
55426c9d JB |
16560 | } |
16561 | ||
16562 | if (unsigned_enum) | |
653223d3 SM |
16563 | type->set_is_unsigned (true); |
16564 | ||
55426c9d JB |
16565 | if (flag_enum) |
16566 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16567 | } |
16568 | ||
134d01f1 DJ |
16569 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16570 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16571 | |
f792889a | 16572 | static struct type * |
134d01f1 | 16573 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16574 | { |
5e22e966 | 16575 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16576 | struct type *type; |
c906108c | 16577 | struct attribute *attr; |
0114d602 | 16578 | const char *name; |
134d01f1 | 16579 | |
348e048f DE |
16580 | /* If the definition of this type lives in .debug_types, read that type. |
16581 | Don't follow DW_AT_specification though, that will take us back up | |
16582 | the chain and we want to go down. */ | |
052c8bb8 | 16583 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16584 | if (attr != nullptr) |
348e048f | 16585 | { |
ac9ec31b | 16586 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16587 | |
ac9ec31b | 16588 | /* The type's CU may not be the same as CU. |
02142a6c | 16589 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16590 | return set_die_type (die, type, cu); |
16591 | } | |
16592 | ||
c906108c SS |
16593 | type = alloc_type (objfile); |
16594 | ||
67607e24 | 16595 | type->set_code (TYPE_CODE_ENUM); |
94af9270 | 16596 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16597 | if (name != NULL) |
d0e39ea2 | 16598 | type->set_name (name); |
c906108c | 16599 | |
0626fc76 TT |
16600 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16601 | if (attr != NULL) | |
16602 | { | |
16603 | struct type *underlying_type = die_type (die, cu); | |
16604 | ||
16605 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16606 | } | |
16607 | ||
e142c38c | 16608 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16609 | if (attr != nullptr) |
c906108c SS |
16610 | { |
16611 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16612 | } | |
16613 | else | |
16614 | { | |
16615 | TYPE_LENGTH (type) = 0; | |
16616 | } | |
16617 | ||
2b4424c3 TT |
16618 | maybe_set_alignment (cu, die, type); |
16619 | ||
137033e9 JB |
16620 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16621 | declared as private in the package spec, and then defined only | |
16622 | inside the package body. Such types are known as Taft Amendment | |
16623 | Types. When another package uses such a type, an incomplete DIE | |
16624 | may be generated by the compiler. */ | |
02eb380e | 16625 | if (die_is_declaration (die, cu)) |
b4b73759 | 16626 | type->set_is_stub (true); |
02eb380e | 16627 | |
0626fc76 TT |
16628 | /* If this type has an underlying type that is not a stub, then we |
16629 | may use its attributes. We always use the "unsigned" attribute | |
16630 | in this situation, because ordinarily we guess whether the type | |
16631 | is unsigned -- but the guess can be wrong and the underlying type | |
16632 | can tell us the reality. However, we defer to a local size | |
16633 | attribute if one exists, because this lets the compiler override | |
16634 | the underlying type if needed. */ | |
e46d3488 | 16635 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_TARGET_TYPE (type)->is_stub ()) |
0626fc76 | 16636 | { |
9e7c9a03 HD |
16637 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
16638 | underlying_type = check_typedef (underlying_type); | |
653223d3 SM |
16639 | |
16640 | type->set_is_unsigned (underlying_type->is_unsigned ()); | |
16641 | ||
0626fc76 | 16642 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 16643 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
653223d3 | 16644 | |
2b4424c3 | 16645 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
16646 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
16647 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
16648 | } |
16649 | ||
3d567982 TT |
16650 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16651 | ||
ed6acedd TT |
16652 | set_die_type (die, type, cu); |
16653 | ||
16654 | /* Finish the creation of this type by using the enum's children. | |
16655 | Note that, as usual, this must come after set_die_type to avoid | |
16656 | infinite recursion when trying to compute the names of the | |
16657 | enumerators. */ | |
16658 | update_enumeration_type_from_children (die, type, cu); | |
16659 | ||
16660 | return type; | |
134d01f1 DJ |
16661 | } |
16662 | ||
16663 | /* Given a pointer to a die which begins an enumeration, process all | |
16664 | the dies that define the members of the enumeration, and create the | |
16665 | symbol for the enumeration type. | |
16666 | ||
16667 | NOTE: We reverse the order of the element list. */ | |
16668 | ||
16669 | static void | |
16670 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16671 | { | |
f792889a | 16672 | struct type *this_type; |
134d01f1 | 16673 | |
f792889a DJ |
16674 | this_type = get_die_type (die, cu); |
16675 | if (this_type == NULL) | |
16676 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16677 | |
639d11d3 | 16678 | if (die->child != NULL) |
c906108c | 16679 | { |
9dc481d3 | 16680 | struct die_info *child_die; |
15d034d0 | 16681 | const char *name; |
9dc481d3 | 16682 | |
639d11d3 | 16683 | child_die = die->child; |
c906108c SS |
16684 | while (child_die && child_die->tag) |
16685 | { | |
16686 | if (child_die->tag != DW_TAG_enumerator) | |
16687 | { | |
e7c27a73 | 16688 | process_die (child_die, cu); |
c906108c SS |
16689 | } |
16690 | else | |
16691 | { | |
39cbfefa DJ |
16692 | name = dwarf2_name (child_die, cu); |
16693 | if (name) | |
ed6acedd | 16694 | new_symbol (child_die, this_type, cu); |
c906108c SS |
16695 | } |
16696 | ||
436c571c | 16697 | child_die = child_die->sibling; |
c906108c | 16698 | } |
c906108c | 16699 | } |
134d01f1 | 16700 | |
6c83ed52 TT |
16701 | /* If we are reading an enum from a .debug_types unit, and the enum |
16702 | is a declaration, and the enum is not the signatured type in the | |
16703 | unit, then we do not want to add a symbol for it. Adding a | |
16704 | symbol would in some cases obscure the true definition of the | |
16705 | enum, giving users an incomplete type when the definition is | |
16706 | actually available. Note that we do not want to do this for all | |
16707 | enums which are just declarations, because C++0x allows forward | |
16708 | enum declarations. */ | |
3019eac3 | 16709 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16710 | && die_is_declaration (die, cu)) |
16711 | { | |
52dc124a | 16712 | struct signatured_type *sig_type; |
6c83ed52 | 16713 | |
c0f78cd4 | 16714 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16715 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16716 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16717 | return; |
16718 | } | |
16719 | ||
f792889a | 16720 | new_symbol (die, this_type, cu); |
c906108c SS |
16721 | } |
16722 | ||
16723 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16724 | the DIE's type field. For now, this only handles one dimensional | |
16725 | arrays. */ | |
16726 | ||
f792889a | 16727 | static struct type * |
e7c27a73 | 16728 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16729 | { |
5e22e966 | 16730 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16731 | struct die_info *child_die; |
7e314c57 | 16732 | struct type *type; |
c906108c | 16733 | struct type *element_type, *range_type, *index_type; |
c906108c | 16734 | struct attribute *attr; |
15d034d0 | 16735 | const char *name; |
a405673c | 16736 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16737 | unsigned int bit_stride = 0; |
c906108c | 16738 | |
e7c27a73 | 16739 | element_type = die_type (die, cu); |
c906108c | 16740 | |
7e314c57 JK |
16741 | /* The die_type call above may have already set the type for this DIE. */ |
16742 | type = get_die_type (die, cu); | |
16743 | if (type) | |
16744 | return type; | |
16745 | ||
dc53a7ad JB |
16746 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16747 | if (attr != NULL) | |
a405673c JB |
16748 | { |
16749 | int stride_ok; | |
293e7e51 | 16750 | struct type *prop_type = cu->addr_sized_int_type (false); |
a405673c JB |
16751 | |
16752 | byte_stride_prop | |
16753 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
16754 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
16755 | prop_type); | |
a405673c JB |
16756 | if (!stride_ok) |
16757 | { | |
b98664d3 | 16758 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16759 | " - DIE at %s [in module %s]"), |
16760 | sect_offset_str (die->sect_off), | |
5e22e966 | 16761 | objfile_name (cu->per_objfile->objfile)); |
a405673c JB |
16762 | /* Ignore this attribute. We will likely not be able to print |
16763 | arrays of this type correctly, but there is little we can do | |
16764 | to help if we cannot read the attribute's value. */ | |
16765 | byte_stride_prop = NULL; | |
16766 | } | |
16767 | } | |
dc53a7ad JB |
16768 | |
16769 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16770 | if (attr != NULL) | |
16771 | bit_stride = DW_UNSND (attr); | |
16772 | ||
c906108c SS |
16773 | /* Irix 6.2 native cc creates array types without children for |
16774 | arrays with unspecified length. */ | |
639d11d3 | 16775 | if (die->child == NULL) |
c906108c | 16776 | { |
46bf5051 | 16777 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16778 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16779 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16780 | byte_stride_prop, bit_stride); |
f792889a | 16781 | return set_die_type (die, type, cu); |
c906108c SS |
16782 | } |
16783 | ||
791afaa2 | 16784 | std::vector<struct type *> range_types; |
639d11d3 | 16785 | child_die = die->child; |
c906108c SS |
16786 | while (child_die && child_die->tag) |
16787 | { | |
16788 | if (child_die->tag == DW_TAG_subrange_type) | |
16789 | { | |
f792889a | 16790 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16791 | |
f792889a | 16792 | if (child_type != NULL) |
a02abb62 | 16793 | { |
0963b4bd MS |
16794 | /* The range type was succesfully read. Save it for the |
16795 | array type creation. */ | |
791afaa2 | 16796 | range_types.push_back (child_type); |
a02abb62 | 16797 | } |
c906108c | 16798 | } |
436c571c | 16799 | child_die = child_die->sibling; |
c906108c SS |
16800 | } |
16801 | ||
16802 | /* Dwarf2 dimensions are output from left to right, create the | |
16803 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16804 | |
c906108c | 16805 | type = element_type; |
7ca2d3a3 DL |
16806 | |
16807 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16808 | { | |
16809 | int i = 0; | |
9a619af0 | 16810 | |
791afaa2 | 16811 | while (i < range_types.size ()) |
dc53a7ad | 16812 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16813 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16814 | } |
16815 | else | |
16816 | { | |
791afaa2 | 16817 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16818 | while (ndim-- > 0) |
dc53a7ad | 16819 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16820 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16821 | } |
c906108c | 16822 | |
f5f8a009 EZ |
16823 | /* Understand Dwarf2 support for vector types (like they occur on |
16824 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16825 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16826 | custom vendor extension. The main difference between a regular | |
16827 | array and the vector variant is that vectors are passed by value | |
16828 | to functions. */ | |
e142c38c | 16829 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 16830 | if (attr != nullptr) |
ea37ba09 | 16831 | make_vector_type (type); |
f5f8a009 | 16832 | |
dbc98a8b KW |
16833 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16834 | implementation may choose to implement triple vectors using this | |
16835 | attribute. */ | |
16836 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16837 | if (attr != nullptr) |
dbc98a8b KW |
16838 | { |
16839 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16840 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16841 | else | |
b98664d3 | 16842 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16843 | "than the total size of elements")); |
dbc98a8b KW |
16844 | } |
16845 | ||
39cbfefa DJ |
16846 | name = dwarf2_name (die, cu); |
16847 | if (name) | |
d0e39ea2 | 16848 | type->set_name (name); |
6e70227d | 16849 | |
2b4424c3 TT |
16850 | maybe_set_alignment (cu, die, type); |
16851 | ||
0963b4bd | 16852 | /* Install the type in the die. */ |
7e314c57 JK |
16853 | set_die_type (die, type, cu); |
16854 | ||
16855 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16856 | set_descriptive_type (type, die, cu); |
16857 | ||
7e314c57 | 16858 | return type; |
c906108c SS |
16859 | } |
16860 | ||
7ca2d3a3 | 16861 | static enum dwarf_array_dim_ordering |
6e70227d | 16862 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16863 | { |
16864 | struct attribute *attr; | |
16865 | ||
16866 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16867 | ||
435d3d88 | 16868 | if (attr != nullptr) |
1bc397c5 TT |
16869 | { |
16870 | LONGEST val = attr->constant_value (-1); | |
16871 | if (val == DW_ORD_row_major || val == DW_ORD_col_major) | |
16872 | return (enum dwarf_array_dim_ordering) val; | |
16873 | } | |
7ca2d3a3 | 16874 | |
0963b4bd MS |
16875 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16876 | opposite order to the dwarf2 specification, but data is still | |
16877 | laid out as per normal fortran. | |
7ca2d3a3 | 16878 | |
0963b4bd MS |
16879 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16880 | version checking. */ | |
7ca2d3a3 | 16881 | |
905e0470 PM |
16882 | if (cu->language == language_fortran |
16883 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16884 | { |
16885 | return DW_ORD_row_major; | |
16886 | } | |
16887 | ||
3a3440fb | 16888 | switch (cu->language_defn->array_ordering ()) |
7ca2d3a3 DL |
16889 | { |
16890 | case array_column_major: | |
16891 | return DW_ORD_col_major; | |
16892 | case array_row_major: | |
16893 | default: | |
16894 | return DW_ORD_row_major; | |
16895 | }; | |
16896 | } | |
16897 | ||
72019c9c | 16898 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16899 | the DIE's type field. */ |
72019c9c | 16900 | |
f792889a | 16901 | static struct type * |
72019c9c GM |
16902 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16903 | { | |
7e314c57 JK |
16904 | struct type *domain_type, *set_type; |
16905 | struct attribute *attr; | |
f792889a | 16906 | |
7e314c57 JK |
16907 | domain_type = die_type (die, cu); |
16908 | ||
16909 | /* The die_type call above may have already set the type for this DIE. */ | |
16910 | set_type = get_die_type (die, cu); | |
16911 | if (set_type) | |
16912 | return set_type; | |
16913 | ||
16914 | set_type = create_set_type (NULL, domain_type); | |
16915 | ||
16916 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16917 | if (attr != nullptr) |
d09039dd | 16918 | TYPE_LENGTH (set_type) = DW_UNSND (attr); |
7e314c57 | 16919 | |
2b4424c3 TT |
16920 | maybe_set_alignment (cu, die, set_type); |
16921 | ||
f792889a | 16922 | return set_die_type (die, set_type, cu); |
72019c9c | 16923 | } |
7ca2d3a3 | 16924 | |
0971de02 TT |
16925 | /* A helper for read_common_block that creates a locexpr baton. |
16926 | SYM is the symbol which we are marking as computed. | |
16927 | COMMON_DIE is the DIE for the common block. | |
16928 | COMMON_LOC is the location expression attribute for the common | |
16929 | block itself. | |
16930 | MEMBER_LOC is the location expression attribute for the particular | |
16931 | member of the common block that we are processing. | |
16932 | CU is the CU from which the above come. */ | |
16933 | ||
16934 | static void | |
16935 | mark_common_block_symbol_computed (struct symbol *sym, | |
16936 | struct die_info *common_die, | |
16937 | struct attribute *common_loc, | |
16938 | struct attribute *member_loc, | |
16939 | struct dwarf2_cu *cu) | |
16940 | { | |
5e22e966 | 16941 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 16942 | struct objfile *objfile = per_objfile->objfile; |
0971de02 TT |
16943 | struct dwarf2_locexpr_baton *baton; |
16944 | gdb_byte *ptr; | |
16945 | unsigned int cu_off; | |
08feed99 | 16946 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
16947 | LONGEST offset = 0; |
16948 | ||
16949 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
16950 | gdb_assert (common_loc->form_is_block ()); |
16951 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 16952 | || member_loc->form_is_constant ()); |
0971de02 | 16953 | |
8d749320 | 16954 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 16955 | baton->per_objfile = per_objfile; |
0971de02 TT |
16956 | baton->per_cu = cu->per_cu; |
16957 | gdb_assert (baton->per_cu); | |
16958 | ||
16959 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16960 | ||
cd6c91b4 | 16961 | if (member_loc->form_is_constant ()) |
0971de02 | 16962 | { |
0826b30a | 16963 | offset = member_loc->constant_value (0); |
0971de02 TT |
16964 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
16965 | } | |
16966 | else | |
9d2246fc | 16967 | baton->size += member_loc->as_block ()->size; |
0971de02 | 16968 | |
224c3ddb | 16969 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16970 | baton->data = ptr; |
16971 | ||
16972 | *ptr++ = DW_OP_call4; | |
9c541725 | 16973 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16974 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16975 | ptr += 4; | |
16976 | ||
cd6c91b4 | 16977 | if (member_loc->form_is_constant ()) |
0971de02 TT |
16978 | { |
16979 | *ptr++ = DW_OP_addr; | |
16980 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16981 | ptr += cu->header.addr_size; | |
16982 | } | |
16983 | else | |
16984 | { | |
16985 | /* We have to copy the data here, because DW_OP_call4 will only | |
16986 | use a DW_AT_location attribute. */ | |
9d2246fc TT |
16987 | struct dwarf_block *block = member_loc->as_block (); |
16988 | memcpy (ptr, block->data, block->size); | |
16989 | ptr += block->size; | |
0971de02 TT |
16990 | } |
16991 | ||
16992 | *ptr++ = DW_OP_plus; | |
16993 | gdb_assert (ptr - baton->data == baton->size); | |
16994 | ||
0971de02 | 16995 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16996 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16997 | } |
16998 | ||
4357ac6c TT |
16999 | /* Create appropriate locally-scoped variables for all the |
17000 | DW_TAG_common_block entries. Also create a struct common_block | |
17001 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 17002 | is used to separate the common blocks name namespace from regular |
4357ac6c | 17003 | variable names. */ |
c906108c SS |
17004 | |
17005 | static void | |
e7c27a73 | 17006 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17007 | { |
0971de02 TT |
17008 | struct attribute *attr; |
17009 | ||
17010 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 17011 | if (attr != nullptr) |
0971de02 TT |
17012 | { |
17013 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 17014 | if (attr->form_is_block ()) |
0971de02 TT |
17015 | { |
17016 | /* Ok. */ | |
17017 | } | |
cd6c91b4 | 17018 | else if (attr->form_is_section_offset ()) |
0971de02 TT |
17019 | { |
17020 | dwarf2_complex_location_expr_complaint (); | |
17021 | attr = NULL; | |
17022 | } | |
17023 | else | |
17024 | { | |
17025 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17026 | "common block member"); | |
17027 | attr = NULL; | |
17028 | } | |
17029 | } | |
17030 | ||
639d11d3 | 17031 | if (die->child != NULL) |
c906108c | 17032 | { |
5e22e966 | 17033 | struct objfile *objfile = cu->per_objfile->objfile; |
4357ac6c TT |
17034 | struct die_info *child_die; |
17035 | size_t n_entries = 0, size; | |
17036 | struct common_block *common_block; | |
17037 | struct symbol *sym; | |
74ac6d43 | 17038 | |
4357ac6c TT |
17039 | for (child_die = die->child; |
17040 | child_die && child_die->tag; | |
436c571c | 17041 | child_die = child_die->sibling) |
4357ac6c TT |
17042 | ++n_entries; |
17043 | ||
17044 | size = (sizeof (struct common_block) | |
17045 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
17046 | common_block |
17047 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
17048 | size); | |
4357ac6c TT |
17049 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
17050 | common_block->n_entries = 0; | |
17051 | ||
17052 | for (child_die = die->child; | |
17053 | child_die && child_die->tag; | |
436c571c | 17054 | child_die = child_die->sibling) |
4357ac6c TT |
17055 | { |
17056 | /* Create the symbol in the DW_TAG_common_block block in the current | |
17057 | symbol scope. */ | |
e7c27a73 | 17058 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
17059 | if (sym != NULL) |
17060 | { | |
17061 | struct attribute *member_loc; | |
17062 | ||
17063 | common_block->contents[common_block->n_entries++] = sym; | |
17064 | ||
17065 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
17066 | cu); | |
17067 | if (member_loc) | |
17068 | { | |
17069 | /* GDB has handled this for a long time, but it is | |
17070 | not specified by DWARF. It seems to have been | |
17071 | emitted by gfortran at least as recently as: | |
17072 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 17073 | complaint (_("Variable in common block has " |
0971de02 | 17074 | "DW_AT_data_member_location " |
9d8780f0 SM |
17075 | "- DIE at %s [in module %s]"), |
17076 | sect_offset_str (child_die->sect_off), | |
518817b3 | 17077 | objfile_name (objfile)); |
0971de02 | 17078 | |
cd6c91b4 | 17079 | if (member_loc->form_is_section_offset ()) |
0971de02 | 17080 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 17081 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 17082 | || member_loc->form_is_block ()) |
0971de02 | 17083 | { |
435d3d88 | 17084 | if (attr != nullptr) |
0971de02 TT |
17085 | mark_common_block_symbol_computed (sym, die, attr, |
17086 | member_loc, cu); | |
17087 | } | |
17088 | else | |
17089 | dwarf2_complex_location_expr_complaint (); | |
17090 | } | |
17091 | } | |
c906108c | 17092 | } |
4357ac6c TT |
17093 | |
17094 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
17095 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
17096 | } |
17097 | } | |
17098 | ||
0114d602 | 17099 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 17100 | |
0114d602 DJ |
17101 | static struct type * |
17102 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 17103 | { |
5e22e966 | 17104 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17105 | const char *previous_prefix, *name; |
9219021c | 17106 | int is_anonymous; |
0114d602 DJ |
17107 | struct type *type; |
17108 | ||
17109 | /* For extensions, reuse the type of the original namespace. */ | |
17110 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
17111 | { | |
17112 | struct die_info *ext_die; | |
17113 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 17114 | |
0114d602 DJ |
17115 | ext_die = dwarf2_extension (die, &ext_cu); |
17116 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
17117 | |
17118 | /* EXT_CU may not be the same as CU. | |
02142a6c | 17119 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
17120 | return set_die_type (die, type, cu); |
17121 | } | |
9219021c | 17122 | |
e142c38c | 17123 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
17124 | |
17125 | /* Now build the name of the current namespace. */ | |
17126 | ||
0114d602 DJ |
17127 | previous_prefix = determine_prefix (die, cu); |
17128 | if (previous_prefix[0] != '\0') | |
17129 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 17130 | previous_prefix, name, 0, cu); |
0114d602 DJ |
17131 | |
17132 | /* Create the type. */ | |
19f392bc | 17133 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 17134 | |
60531b24 | 17135 | return set_die_type (die, type, cu); |
0114d602 DJ |
17136 | } |
17137 | ||
22cee43f | 17138 | /* Read a namespace scope. */ |
0114d602 DJ |
17139 | |
17140 | static void | |
17141 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
17142 | { | |
5e22e966 | 17143 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17144 | int is_anonymous; |
9219021c | 17145 | |
5c4e30ca DC |
17146 | /* Add a symbol associated to this if we haven't seen the namespace |
17147 | before. Also, add a using directive if it's an anonymous | |
17148 | namespace. */ | |
9219021c | 17149 | |
f2f0e013 | 17150 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
17151 | { |
17152 | struct type *type; | |
17153 | ||
0114d602 | 17154 | type = read_type_die (die, cu); |
e7c27a73 | 17155 | new_symbol (die, type, cu); |
5c4e30ca | 17156 | |
e8e80198 | 17157 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 17158 | if (is_anonymous) |
0114d602 DJ |
17159 | { |
17160 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 17161 | |
eb1e02fd | 17162 | std::vector<const char *> excludes; |
804d2729 | 17163 | add_using_directive (using_directives (cu), |
7d93a1e0 | 17164 | previous_prefix, type->name (), NULL, |
eb1e02fd | 17165 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 17166 | } |
5c4e30ca | 17167 | } |
9219021c | 17168 | |
639d11d3 | 17169 | if (die->child != NULL) |
d9fa45fe | 17170 | { |
639d11d3 | 17171 | struct die_info *child_die = die->child; |
6e70227d | 17172 | |
d9fa45fe DC |
17173 | while (child_die && child_die->tag) |
17174 | { | |
e7c27a73 | 17175 | process_die (child_die, cu); |
436c571c | 17176 | child_die = child_die->sibling; |
d9fa45fe DC |
17177 | } |
17178 | } | |
38d518c9 EZ |
17179 | } |
17180 | ||
f55ee35c JK |
17181 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
17182 | imported module. Still we need that type as local Fortran "use ... only" | |
17183 | declaration imports depend on the created type in determine_prefix. */ | |
17184 | ||
17185 | static struct type * | |
17186 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
17187 | { | |
5e22e966 | 17188 | struct objfile *objfile = cu->per_objfile->objfile; |
15d034d0 | 17189 | const char *module_name; |
f55ee35c JK |
17190 | struct type *type; |
17191 | ||
17192 | module_name = dwarf2_name (die, cu); | |
19f392bc | 17193 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 17194 | |
f55ee35c JK |
17195 | return set_die_type (die, type, cu); |
17196 | } | |
17197 | ||
5d7cb8df JK |
17198 | /* Read a Fortran module. */ |
17199 | ||
17200 | static void | |
17201 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
17202 | { | |
17203 | struct die_info *child_die = die->child; | |
530e8392 KB |
17204 | struct type *type; |
17205 | ||
17206 | type = read_type_die (die, cu); | |
17207 | new_symbol (die, type, cu); | |
5d7cb8df | 17208 | |
5d7cb8df JK |
17209 | while (child_die && child_die->tag) |
17210 | { | |
17211 | process_die (child_die, cu); | |
436c571c | 17212 | child_die = child_die->sibling; |
5d7cb8df JK |
17213 | } |
17214 | } | |
17215 | ||
38d518c9 EZ |
17216 | /* Return the name of the namespace represented by DIE. Set |
17217 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
17218 | namespace. */ | |
17219 | ||
17220 | static const char * | |
e142c38c | 17221 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
17222 | { |
17223 | struct die_info *current_die; | |
17224 | const char *name = NULL; | |
17225 | ||
17226 | /* Loop through the extensions until we find a name. */ | |
17227 | ||
17228 | for (current_die = die; | |
17229 | current_die != NULL; | |
f2f0e013 | 17230 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 17231 | { |
96553a0c DE |
17232 | /* We don't use dwarf2_name here so that we can detect the absence |
17233 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 17234 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 17235 | |
38d518c9 EZ |
17236 | if (name != NULL) |
17237 | break; | |
17238 | } | |
17239 | ||
17240 | /* Is it an anonymous namespace? */ | |
17241 | ||
17242 | *is_anonymous = (name == NULL); | |
17243 | if (*is_anonymous) | |
2b1dbab0 | 17244 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
17245 | |
17246 | return name; | |
d9fa45fe DC |
17247 | } |
17248 | ||
c906108c SS |
17249 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
17250 | the user defined type vector. */ | |
17251 | ||
f792889a | 17252 | static struct type * |
e7c27a73 | 17253 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17254 | { |
5e22e966 | 17255 | struct gdbarch *gdbarch = cu->per_objfile->objfile->arch (); |
e7c27a73 | 17256 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 17257 | struct type *type; |
8b2dbe47 KB |
17258 | struct attribute *attr_byte_size; |
17259 | struct attribute *attr_address_class; | |
17260 | int byte_size, addr_class; | |
7e314c57 JK |
17261 | struct type *target_type; |
17262 | ||
17263 | target_type = die_type (die, cu); | |
c906108c | 17264 | |
7e314c57 JK |
17265 | /* The die_type call above may have already set the type for this DIE. */ |
17266 | type = get_die_type (die, cu); | |
17267 | if (type) | |
17268 | return type; | |
17269 | ||
17270 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17271 | |
e142c38c | 17272 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
17273 | if (attr_byte_size) |
17274 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 17275 | else |
8b2dbe47 KB |
17276 | byte_size = cu_header->addr_size; |
17277 | ||
e142c38c | 17278 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
17279 | if (attr_address_class) |
17280 | addr_class = DW_UNSND (attr_address_class); | |
17281 | else | |
17282 | addr_class = DW_ADDR_none; | |
17283 | ||
2b4424c3 TT |
17284 | ULONGEST alignment = get_alignment (cu, die); |
17285 | ||
17286 | /* If the pointer size, alignment, or address class is different | |
17287 | than the default, create a type variant marked as such and set | |
17288 | the length accordingly. */ | |
17289 | if (TYPE_LENGTH (type) != byte_size | |
17290 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17291 | && alignment != TYPE_RAW_ALIGN (type)) | |
17292 | || addr_class != DW_ADDR_none) | |
c906108c | 17293 | { |
5e2b427d | 17294 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 | 17295 | { |
314ad88d PA |
17296 | type_instance_flags type_flags |
17297 | = gdbarch_address_class_type_flags (gdbarch, byte_size, | |
17298 | addr_class); | |
876cecd0 TT |
17299 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17300 | == 0); | |
8b2dbe47 KB |
17301 | type = make_type_with_address_space (type, type_flags); |
17302 | } | |
17303 | else if (TYPE_LENGTH (type) != byte_size) | |
17304 | { | |
b98664d3 | 17305 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17306 | } |
2b4424c3 TT |
17307 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17308 | { | |
b98664d3 | 17309 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17310 | " - DIE at %s [in module %s]"), |
17311 | sect_offset_str (die->sect_off), | |
5e22e966 | 17312 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 17313 | } |
6e70227d | 17314 | else |
9a619af0 MS |
17315 | { |
17316 | /* Should we also complain about unhandled address classes? */ | |
17317 | } | |
c906108c | 17318 | } |
8b2dbe47 KB |
17319 | |
17320 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17321 | set_type_align (type, alignment); |
f792889a | 17322 | return set_die_type (die, type, cu); |
c906108c SS |
17323 | } |
17324 | ||
17325 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17326 | the user defined type vector. */ | |
17327 | ||
f792889a | 17328 | static struct type * |
e7c27a73 | 17329 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17330 | { |
17331 | struct type *type; | |
17332 | struct type *to_type; | |
17333 | struct type *domain; | |
17334 | ||
e7c27a73 DJ |
17335 | to_type = die_type (die, cu); |
17336 | domain = die_containing_type (die, cu); | |
0d5de010 | 17337 | |
7e314c57 JK |
17338 | /* The calls above may have already set the type for this DIE. */ |
17339 | type = get_die_type (die, cu); | |
17340 | if (type) | |
17341 | return type; | |
17342 | ||
78134374 | 17343 | if (check_typedef (to_type)->code () == TYPE_CODE_METHOD) |
0d5de010 | 17344 | type = lookup_methodptr_type (to_type); |
78134374 | 17345 | else if (check_typedef (to_type)->code () == TYPE_CODE_FUNC) |
7078baeb | 17346 | { |
5e22e966 | 17347 | struct type *new_type = alloc_type (cu->per_objfile->objfile); |
7078baeb TT |
17348 | |
17349 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
80fc5e77 | 17350 | to_type->fields (), to_type->num_fields (), |
a409645d | 17351 | to_type->has_varargs ()); |
7078baeb TT |
17352 | type = lookup_methodptr_type (new_type); |
17353 | } | |
0d5de010 DJ |
17354 | else |
17355 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17356 | |
f792889a | 17357 | return set_die_type (die, type, cu); |
c906108c SS |
17358 | } |
17359 | ||
4297a3f0 | 17360 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17361 | the user defined type vector. */ |
17362 | ||
f792889a | 17363 | static struct type * |
4297a3f0 AV |
17364 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
17365 | enum type_code refcode) | |
c906108c | 17366 | { |
e7c27a73 | 17367 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17368 | struct type *type, *target_type; |
c906108c SS |
17369 | struct attribute *attr; |
17370 | ||
4297a3f0 AV |
17371 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17372 | ||
7e314c57 JK |
17373 | target_type = die_type (die, cu); |
17374 | ||
17375 | /* The die_type call above may have already set the type for this DIE. */ | |
17376 | type = get_die_type (die, cu); | |
17377 | if (type) | |
17378 | return type; | |
17379 | ||
4297a3f0 | 17380 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17381 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17382 | if (attr != nullptr) |
c906108c SS |
17383 | { |
17384 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
17385 | } | |
17386 | else | |
17387 | { | |
107d2387 | 17388 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17389 | } |
2b4424c3 | 17390 | maybe_set_alignment (cu, die, type); |
f792889a | 17391 | return set_die_type (die, type, cu); |
c906108c SS |
17392 | } |
17393 | ||
cf363f18 MW |
17394 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17395 | outputs DWARF type qualifiers that apply to an array, not the | |
17396 | element type. But GDB relies on the array element type to carry | |
17397 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17398 | specification. */ | |
17399 | ||
17400 | static struct type * | |
17401 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17402 | struct type *base_type, int cnst, int voltl) | |
17403 | { | |
17404 | struct type *el_type, *inner_array; | |
17405 | ||
17406 | base_type = copy_type (base_type); | |
17407 | inner_array = base_type; | |
17408 | ||
78134374 | 17409 | while (TYPE_TARGET_TYPE (inner_array)->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17410 | { |
17411 | TYPE_TARGET_TYPE (inner_array) = | |
17412 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17413 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17414 | } | |
17415 | ||
17416 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17417 | cnst |= TYPE_CONST (el_type); | |
17418 | voltl |= TYPE_VOLATILE (el_type); | |
17419 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17420 | ||
17421 | return set_die_type (die, base_type, cu); | |
17422 | } | |
17423 | ||
f792889a | 17424 | static struct type * |
e7c27a73 | 17425 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17426 | { |
f792889a | 17427 | struct type *base_type, *cv_type; |
c906108c | 17428 | |
e7c27a73 | 17429 | base_type = die_type (die, cu); |
7e314c57 JK |
17430 | |
17431 | /* The die_type call above may have already set the type for this DIE. */ | |
17432 | cv_type = get_die_type (die, cu); | |
17433 | if (cv_type) | |
17434 | return cv_type; | |
17435 | ||
2f608a3a KW |
17436 | /* In case the const qualifier is applied to an array type, the element type |
17437 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
78134374 | 17438 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 | 17439 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17440 | |
f792889a DJ |
17441 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17442 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17443 | } |
17444 | ||
f792889a | 17445 | static struct type * |
e7c27a73 | 17446 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17447 | { |
f792889a | 17448 | struct type *base_type, *cv_type; |
c906108c | 17449 | |
e7c27a73 | 17450 | base_type = die_type (die, cu); |
7e314c57 JK |
17451 | |
17452 | /* The die_type call above may have already set the type for this DIE. */ | |
17453 | cv_type = get_die_type (die, cu); | |
17454 | if (cv_type) | |
17455 | return cv_type; | |
17456 | ||
cf363f18 MW |
17457 | /* In case the volatile qualifier is applied to an array type, the |
17458 | element type is so qualified, not the array type (section 6.7.3 | |
17459 | of C99). */ | |
78134374 | 17460 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17461 | return add_array_cv_type (die, cu, base_type, 0, 1); |
17462 | ||
f792889a DJ |
17463 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17464 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17465 | } |
17466 | ||
06d66ee9 TT |
17467 | /* Handle DW_TAG_restrict_type. */ |
17468 | ||
17469 | static struct type * | |
17470 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17471 | { | |
17472 | struct type *base_type, *cv_type; | |
17473 | ||
17474 | base_type = die_type (die, cu); | |
17475 | ||
17476 | /* The die_type call above may have already set the type for this DIE. */ | |
17477 | cv_type = get_die_type (die, cu); | |
17478 | if (cv_type) | |
17479 | return cv_type; | |
17480 | ||
17481 | cv_type = make_restrict_type (base_type); | |
17482 | return set_die_type (die, cv_type, cu); | |
17483 | } | |
17484 | ||
a2c2acaf MW |
17485 | /* Handle DW_TAG_atomic_type. */ |
17486 | ||
17487 | static struct type * | |
17488 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17489 | { | |
17490 | struct type *base_type, *cv_type; | |
17491 | ||
17492 | base_type = die_type (die, cu); | |
17493 | ||
17494 | /* The die_type call above may have already set the type for this DIE. */ | |
17495 | cv_type = get_die_type (die, cu); | |
17496 | if (cv_type) | |
17497 | return cv_type; | |
17498 | ||
17499 | cv_type = make_atomic_type (base_type); | |
17500 | return set_die_type (die, cv_type, cu); | |
17501 | } | |
17502 | ||
c906108c SS |
17503 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17504 | the user defined type vector. It isn't really a user defined type, | |
17505 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17506 | attribute to reference it. */ | |
17507 | ||
f792889a | 17508 | static struct type * |
e7c27a73 | 17509 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17510 | { |
5e22e966 | 17511 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 17512 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
17513 | struct type *type, *range_type, *index_type, *char_type; |
17514 | struct attribute *attr; | |
216a7e6b AB |
17515 | struct dynamic_prop prop; |
17516 | bool length_is_constant = true; | |
17517 | LONGEST length; | |
17518 | ||
17519 | /* There are a couple of places where bit sizes might be made use of | |
17520 | when parsing a DW_TAG_string_type, however, no producer that we know | |
17521 | of make use of these. Handling bit sizes that are a multiple of the | |
17522 | byte size is easy enough, but what about other bit sizes? Lets deal | |
17523 | with that problem when we have to. Warn about these attributes being | |
17524 | unsupported, then parse the type and ignore them like we always | |
17525 | have. */ | |
17526 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
17527 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
17528 | { | |
17529 | static bool warning_printed = false; | |
17530 | if (!warning_printed) | |
17531 | { | |
17532 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
17533 | "currently supported on DW_TAG_string_type.")); | |
17534 | warning_printed = true; | |
17535 | } | |
17536 | } | |
c906108c | 17537 | |
e142c38c | 17538 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 17539 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
17540 | { |
17541 | /* The string length describes the location at which the length of | |
17542 | the string can be found. The size of the length field can be | |
17543 | specified with one of the attributes below. */ | |
17544 | struct type *prop_type; | |
17545 | struct attribute *len | |
17546 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
17547 | if (len == nullptr) | |
17548 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 17549 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
17550 | { |
17551 | /* Pass 0 as the default as we know this attribute is constant | |
17552 | and the default value will not be returned. */ | |
0826b30a | 17553 | LONGEST sz = len->constant_value (0); |
293e7e51 | 17554 | prop_type = cu->per_objfile->int_type (sz, true); |
216a7e6b AB |
17555 | } |
17556 | else | |
17557 | { | |
17558 | /* If the size is not specified then we assume it is the size of | |
17559 | an address on this target. */ | |
293e7e51 | 17560 | prop_type = cu->addr_sized_int_type (true); |
216a7e6b AB |
17561 | } |
17562 | ||
17563 | /* Convert the attribute into a dynamic property. */ | |
17564 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17565 | length = 1; | |
17566 | else | |
17567 | length_is_constant = false; | |
17568 | } | |
17569 | else if (attr != nullptr) | |
17570 | { | |
17571 | /* This DW_AT_string_length just contains the length with no | |
17572 | indirection. There's no need to create a dynamic property in this | |
17573 | case. Pass 0 for the default value as we know it will not be | |
17574 | returned in this case. */ | |
0826b30a | 17575 | length = attr->constant_value (0); |
216a7e6b AB |
17576 | } |
17577 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17578 | { |
216a7e6b | 17579 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 17580 | length = attr->constant_value (1); |
c906108c SS |
17581 | } |
17582 | else | |
17583 | { | |
216a7e6b AB |
17584 | /* Use 1 as a fallback length if we have nothing else. */ |
17585 | length = 1; | |
c906108c | 17586 | } |
6ccb9162 | 17587 | |
46bf5051 | 17588 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17589 | if (length_is_constant) |
17590 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17591 | else | |
17592 | { | |
17593 | struct dynamic_prop low_bound; | |
17594 | ||
8c2e4e06 | 17595 | low_bound.set_const_val (1); |
216a7e6b AB |
17596 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); |
17597 | } | |
3b7538c0 UW |
17598 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17599 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17600 | |
f792889a | 17601 | return set_die_type (die, type, cu); |
c906108c SS |
17602 | } |
17603 | ||
4d804846 JB |
17604 | /* Assuming that DIE corresponds to a function, returns nonzero |
17605 | if the function is prototyped. */ | |
17606 | ||
17607 | static int | |
17608 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17609 | { | |
17610 | struct attribute *attr; | |
17611 | ||
17612 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17613 | if (attr && (DW_UNSND (attr) != 0)) | |
17614 | return 1; | |
17615 | ||
17616 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17617 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17618 | languages that allow unprototyped functions (Eg: Objective C). |
17619 | For all other languages, assume that functions are always | |
17620 | prototyped. */ | |
17621 | if (cu->language != language_c | |
17622 | && cu->language != language_objc | |
17623 | && cu->language != language_opencl) | |
17624 | return 1; | |
17625 | ||
17626 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17627 | prototyped and unprototyped functions; default to prototyped, | |
17628 | since that is more common in modern code (and RealView warns | |
17629 | about unprototyped functions). */ | |
17630 | if (producer_is_realview (cu->producer)) | |
17631 | return 1; | |
17632 | ||
17633 | return 0; | |
17634 | } | |
17635 | ||
c906108c SS |
17636 | /* Handle DIES due to C code like: |
17637 | ||
17638 | struct foo | |
c5aa993b JM |
17639 | { |
17640 | int (*funcp)(int a, long l); | |
17641 | int b; | |
17642 | }; | |
c906108c | 17643 | |
0963b4bd | 17644 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17645 | |
f792889a | 17646 | static struct type * |
e7c27a73 | 17647 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17648 | { |
5e22e966 | 17649 | struct objfile *objfile = cu->per_objfile->objfile; |
0963b4bd MS |
17650 | struct type *type; /* Type that this function returns. */ |
17651 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17652 | struct attribute *attr; |
17653 | ||
e7c27a73 | 17654 | type = die_type (die, cu); |
7e314c57 JK |
17655 | |
17656 | /* The die_type call above may have already set the type for this DIE. */ | |
17657 | ftype = get_die_type (die, cu); | |
17658 | if (ftype) | |
17659 | return ftype; | |
17660 | ||
0c8b41f1 | 17661 | ftype = lookup_function_type (type); |
c906108c | 17662 | |
4d804846 | 17663 | if (prototyped_function_p (die, cu)) |
27e69b7a | 17664 | ftype->set_is_prototyped (true); |
c906108c | 17665 | |
c055b101 CV |
17666 | /* Store the calling convention in the type if it's available in |
17667 | the subroutine die. Otherwise set the calling convention to | |
17668 | the default value DW_CC_normal. */ | |
17669 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf TBA |
17670 | if (attr != nullptr |
17671 | && is_valid_DW_AT_calling_convention_for_subroutine (DW_UNSND (attr))) | |
17672 | TYPE_CALLING_CONVENTION (ftype) | |
17673 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
54fcddd0 UW |
17674 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
17675 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17676 | else | |
17677 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17678 | |
743649fd MW |
17679 | /* Record whether the function returns normally to its caller or not |
17680 | if the DWARF producer set that information. */ | |
17681 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17682 | if (attr && (DW_UNSND (attr) != 0)) | |
17683 | TYPE_NO_RETURN (ftype) = 1; | |
17684 | ||
76c10ea2 GM |
17685 | /* We need to add the subroutine type to the die immediately so |
17686 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17687 | declared as the same subroutine type. */ |
76c10ea2 | 17688 | set_die_type (die, ftype, cu); |
6e70227d | 17689 | |
639d11d3 | 17690 | if (die->child != NULL) |
c906108c | 17691 | { |
bb5ed363 | 17692 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17693 | struct die_info *child_die; |
8072405b | 17694 | int nparams, iparams; |
c906108c SS |
17695 | |
17696 | /* Count the number of parameters. | |
17697 | FIXME: GDB currently ignores vararg functions, but knows about | |
17698 | vararg member functions. */ | |
8072405b | 17699 | nparams = 0; |
639d11d3 | 17700 | child_die = die->child; |
c906108c SS |
17701 | while (child_die && child_die->tag) |
17702 | { | |
17703 | if (child_die->tag == DW_TAG_formal_parameter) | |
17704 | nparams++; | |
17705 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
1d6286ed SM |
17706 | ftype->set_has_varargs (true); |
17707 | ||
436c571c | 17708 | child_die = child_die->sibling; |
c906108c SS |
17709 | } |
17710 | ||
17711 | /* Allocate storage for parameters and fill them in. */ | |
5e33d5f4 | 17712 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
17713 | ftype->set_fields |
17714 | ((struct field *) TYPE_ZALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 17715 | |
8072405b JK |
17716 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17717 | even if we error out during the parameters reading below. */ | |
17718 | for (iparams = 0; iparams < nparams; iparams++) | |
5d14b6e5 | 17719 | ftype->field (iparams).set_type (void_type); |
8072405b JK |
17720 | |
17721 | iparams = 0; | |
639d11d3 | 17722 | child_die = die->child; |
c906108c SS |
17723 | while (child_die && child_die->tag) |
17724 | { | |
17725 | if (child_die->tag == DW_TAG_formal_parameter) | |
17726 | { | |
3ce3b1ba PA |
17727 | struct type *arg_type; |
17728 | ||
17729 | /* DWARF version 2 has no clean way to discern C++ | |
17730 | static and non-static member functions. G++ helps | |
17731 | GDB by marking the first parameter for non-static | |
17732 | member functions (which is the this pointer) as | |
17733 | artificial. We pass this information to | |
17734 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17735 | ||
17736 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17737 | 4.5 does not yet generate. */ | |
e142c38c | 17738 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 17739 | if (attr != nullptr) |
c906108c SS |
17740 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); |
17741 | else | |
9c37b5ae | 17742 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17743 | arg_type = die_type (child_die, cu); |
17744 | ||
17745 | /* RealView does not mark THIS as const, which the testsuite | |
17746 | expects. GCC marks THIS as const in method definitions, | |
17747 | but not in the class specifications (GCC PR 43053). */ | |
17748 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17749 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17750 | { | |
17751 | int is_this = 0; | |
17752 | struct dwarf2_cu *arg_cu = cu; | |
17753 | const char *name = dwarf2_name (child_die, cu); | |
17754 | ||
17755 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 17756 | if (attr != nullptr) |
3ce3b1ba PA |
17757 | { |
17758 | /* If the compiler emits this, use it. */ | |
17759 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17760 | is_this = 1; | |
17761 | } | |
17762 | else if (name && strcmp (name, "this") == 0) | |
17763 | /* Function definitions will have the argument names. */ | |
17764 | is_this = 1; | |
17765 | else if (name == NULL && iparams == 0) | |
17766 | /* Declarations may not have the names, so like | |
17767 | elsewhere in GDB, assume an artificial first | |
17768 | argument is "this". */ | |
17769 | is_this = 1; | |
17770 | ||
17771 | if (is_this) | |
17772 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17773 | arg_type, 0); | |
17774 | } | |
17775 | ||
5d14b6e5 | 17776 | ftype->field (iparams).set_type (arg_type); |
c906108c SS |
17777 | iparams++; |
17778 | } | |
436c571c | 17779 | child_die = child_die->sibling; |
c906108c SS |
17780 | } |
17781 | } | |
17782 | ||
76c10ea2 | 17783 | return ftype; |
c906108c SS |
17784 | } |
17785 | ||
f792889a | 17786 | static struct type * |
e7c27a73 | 17787 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17788 | { |
5e22e966 | 17789 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17790 | const char *name = NULL; |
3c8e0968 | 17791 | struct type *this_type, *target_type; |
c906108c | 17792 | |
94af9270 | 17793 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc | 17794 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
8f53807e | 17795 | this_type->set_target_is_stub (true); |
f792889a | 17796 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17797 | target_type = die_type (die, cu); |
17798 | if (target_type != this_type) | |
17799 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17800 | else | |
17801 | { | |
17802 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17803 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17804 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17805 | "- DIE at %s [in module %s]"), |
17806 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17807 | TYPE_TARGET_TYPE (this_type) = NULL; |
17808 | } | |
e4003a34 TV |
17809 | if (name == NULL) |
17810 | { | |
17811 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
17812 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
17813 | Handle these by just returning the target type, rather than | |
17814 | constructing an anonymous typedef type and trying to handle this | |
17815 | elsewhere. */ | |
17816 | set_die_type (die, target_type, cu); | |
17817 | return target_type; | |
17818 | } | |
f792889a | 17819 | return this_type; |
c906108c SS |
17820 | } |
17821 | ||
9b790ce7 UW |
17822 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17823 | (which may be different from NAME) to the architecture back-end to allow | |
17824 | it to guess the correct format if necessary. */ | |
17825 | ||
17826 | static struct type * | |
17827 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 17828 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 17829 | { |
08feed99 | 17830 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
17831 | const struct floatformat **format; |
17832 | struct type *type; | |
17833 | ||
17834 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17835 | if (format) | |
103a685e | 17836 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 17837 | else |
77b7c781 | 17838 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17839 | |
17840 | return type; | |
17841 | } | |
17842 | ||
eb77c9df AB |
17843 | /* Allocate an integer type of size BITS and name NAME. */ |
17844 | ||
17845 | static struct type * | |
17846 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
17847 | int bits, int unsigned_p, const char *name) | |
17848 | { | |
17849 | struct type *type; | |
17850 | ||
17851 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
17852 | instead of using DW_TAG_unspecified_type. This has been seen on | |
17853 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
17854 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
17855 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
17856 | type = objfile_type (objfile)->builtin_void; |
17857 | else | |
17858 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
17859 | ||
17860 | return type; | |
17861 | } | |
17862 | ||
8bdc1658 AB |
17863 | /* Initialise and return a floating point type of size BITS suitable for |
17864 | use as a component of a complex number. The NAME_HINT is passed through | |
17865 | when initialising the floating point type and is the name of the complex | |
17866 | type. | |
17867 | ||
17868 | As DWARF doesn't currently provide an explicit name for the components | |
17869 | of a complex number, but it can be helpful to have these components | |
17870 | named, we try to select a suitable name based on the size of the | |
17871 | component. */ | |
17872 | static struct type * | |
17873 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
17874 | struct objfile *objfile, | |
103a685e TT |
17875 | int bits, const char *name_hint, |
17876 | enum bfd_endian byte_order) | |
8bdc1658 | 17877 | { |
08feed99 | 17878 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
17879 | struct type *tt = nullptr; |
17880 | ||
35add35e AB |
17881 | /* Try to find a suitable floating point builtin type of size BITS. |
17882 | We're going to use the name of this type as the name for the complex | |
17883 | target type that we are about to create. */ | |
1db455a7 | 17884 | switch (cu->language) |
8bdc1658 | 17885 | { |
1db455a7 AB |
17886 | case language_fortran: |
17887 | switch (bits) | |
17888 | { | |
17889 | case 32: | |
17890 | tt = builtin_f_type (gdbarch)->builtin_real; | |
17891 | break; | |
17892 | case 64: | |
17893 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
17894 | break; | |
17895 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17896 | case 128: | |
17897 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
17898 | break; | |
17899 | } | |
8bdc1658 | 17900 | break; |
1db455a7 AB |
17901 | default: |
17902 | switch (bits) | |
17903 | { | |
17904 | case 32: | |
17905 | tt = builtin_type (gdbarch)->builtin_float; | |
17906 | break; | |
17907 | case 64: | |
17908 | tt = builtin_type (gdbarch)->builtin_double; | |
17909 | break; | |
17910 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17911 | case 128: | |
17912 | tt = builtin_type (gdbarch)->builtin_long_double; | |
17913 | break; | |
17914 | } | |
8bdc1658 AB |
17915 | break; |
17916 | } | |
17917 | ||
35add35e AB |
17918 | /* If the type we found doesn't match the size we were looking for, then |
17919 | pretend we didn't find a type at all, the complex target type we | |
17920 | create will then be nameless. */ | |
a12e5744 | 17921 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
17922 | tt = nullptr; |
17923 | ||
7d93a1e0 | 17924 | const char *name = (tt == nullptr) ? nullptr : tt->name (); |
103a685e | 17925 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
17926 | } |
17927 | ||
c906108c SS |
17928 | /* Find a representation of a given base type and install |
17929 | it in the TYPE field of the die. */ | |
17930 | ||
f792889a | 17931 | static struct type * |
e7c27a73 | 17932 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17933 | { |
5e22e966 | 17934 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
17935 | struct type *type; |
17936 | struct attribute *attr; | |
19f392bc | 17937 | int encoding = 0, bits = 0; |
15d034d0 | 17938 | const char *name; |
34877895 | 17939 | gdbarch *arch; |
c906108c | 17940 | |
e142c38c | 17941 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
435d3d88 | 17942 | if (attr != nullptr) |
34877895 | 17943 | encoding = DW_UNSND (attr); |
e142c38c | 17944 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17945 | if (attr != nullptr) |
34877895 | 17946 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
39cbfefa | 17947 | name = dwarf2_name (die, cu); |
6ccb9162 | 17948 | if (!name) |
34877895 | 17949 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 17950 | |
08feed99 | 17951 | arch = objfile->arch (); |
103a685e TT |
17952 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
17953 | ||
34877895 PJ |
17954 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
17955 | if (attr) | |
103a685e TT |
17956 | { |
17957 | int endianity = DW_UNSND (attr); | |
17958 | ||
17959 | switch (endianity) | |
17960 | { | |
17961 | case DW_END_big: | |
17962 | byte_order = BFD_ENDIAN_BIG; | |
17963 | break; | |
17964 | case DW_END_little: | |
17965 | byte_order = BFD_ENDIAN_LITTLE; | |
17966 | break; | |
17967 | default: | |
17968 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
17969 | break; | |
17970 | } | |
17971 | } | |
6ccb9162 UW |
17972 | |
17973 | switch (encoding) | |
c906108c | 17974 | { |
6ccb9162 UW |
17975 | case DW_ATE_address: |
17976 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17977 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17978 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17979 | break; |
17980 | case DW_ATE_boolean: | |
19f392bc | 17981 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17982 | break; |
17983 | case DW_ATE_complex_float: | |
103a685e TT |
17984 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
17985 | byte_order); | |
78134374 | 17986 | if (type->code () == TYPE_CODE_ERROR) |
93689ce9 TT |
17987 | { |
17988 | if (name == nullptr) | |
17989 | { | |
17990 | struct obstack *obstack | |
5e22e966 | 17991 | = &cu->per_objfile->objfile->objfile_obstack; |
7d93a1e0 | 17992 | name = obconcat (obstack, "_Complex ", type->name (), |
93689ce9 TT |
17993 | nullptr); |
17994 | } | |
17995 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
17996 | } | |
17997 | else | |
17998 | type = init_complex_type (name, type); | |
6ccb9162 UW |
17999 | break; |
18000 | case DW_ATE_decimal_float: | |
19f392bc | 18001 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
18002 | break; |
18003 | case DW_ATE_float: | |
103a685e | 18004 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
18005 | break; |
18006 | case DW_ATE_signed: | |
eb77c9df | 18007 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18008 | break; |
18009 | case DW_ATE_unsigned: | |
3b2b8fea TT |
18010 | if (cu->language == language_fortran |
18011 | && name | |
61012eef | 18012 | && startswith (name, "character(")) |
19f392bc UW |
18013 | type = init_character_type (objfile, bits, 1, name); |
18014 | else | |
eb77c9df | 18015 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
18016 | break; |
18017 | case DW_ATE_signed_char: | |
6e70227d | 18018 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
18019 | || cu->language == language_pascal |
18020 | || cu->language == language_fortran) | |
19f392bc UW |
18021 | type = init_character_type (objfile, bits, 0, name); |
18022 | else | |
eb77c9df | 18023 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18024 | break; |
18025 | case DW_ATE_unsigned_char: | |
868a0084 | 18026 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 18027 | || cu->language == language_pascal |
c44af4eb TT |
18028 | || cu->language == language_fortran |
18029 | || cu->language == language_rust) | |
19f392bc UW |
18030 | type = init_character_type (objfile, bits, 1, name); |
18031 | else | |
eb77c9df | 18032 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 18033 | break; |
75079b2b | 18034 | case DW_ATE_UTF: |
53e710ac | 18035 | { |
53e710ac PA |
18036 | if (bits == 16) |
18037 | type = builtin_type (arch)->builtin_char16; | |
18038 | else if (bits == 32) | |
18039 | type = builtin_type (arch)->builtin_char32; | |
18040 | else | |
18041 | { | |
b98664d3 | 18042 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 18043 | bits); |
eb77c9df | 18044 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
18045 | } |
18046 | return set_die_type (die, type, cu); | |
18047 | } | |
75079b2b TT |
18048 | break; |
18049 | ||
6ccb9162 | 18050 | default: |
b98664d3 | 18051 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 18052 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 18053 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 18054 | break; |
c906108c | 18055 | } |
6ccb9162 | 18056 | |
0114d602 | 18057 | if (name && strcmp (name, "char") == 0) |
15152a54 | 18058 | type->set_has_no_signedness (true); |
0114d602 | 18059 | |
2b4424c3 TT |
18060 | maybe_set_alignment (cu, die, type); |
18061 | ||
db558e34 | 18062 | type->set_endianity_is_not_default (gdbarch_byte_order (arch) != byte_order); |
34877895 | 18063 | |
20a5fcbd TT |
18064 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_INT) |
18065 | { | |
18066 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); | |
18067 | if (attr != nullptr && DW_UNSND (attr) <= 8 * TYPE_LENGTH (type)) | |
18068 | { | |
18069 | unsigned real_bit_size = DW_UNSND (attr); | |
18070 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); | |
18071 | /* Only use the attributes if they make sense together. */ | |
18072 | if (attr == nullptr | |
18073 | || DW_UNSND (attr) + real_bit_size <= 8 * TYPE_LENGTH (type)) | |
18074 | { | |
18075 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_size | |
18076 | = real_bit_size; | |
18077 | if (attr != nullptr) | |
18078 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_offset | |
18079 | = DW_UNSND (attr); | |
18080 | } | |
18081 | } | |
18082 | } | |
18083 | ||
f792889a | 18084 | return set_die_type (die, type, cu); |
c906108c SS |
18085 | } |
18086 | ||
80180f79 SA |
18087 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
18088 | resulting value of the attribute into struct bound_prop. | |
18089 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
18090 | ||
18091 | static int | |
18092 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
18093 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
18094 | struct type *default_type) | |
80180f79 SA |
18095 | { |
18096 | struct dwarf2_property_baton *baton; | |
5e22e966 | 18097 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba TT |
18098 | struct objfile *objfile = per_objfile->objfile; |
18099 | struct obstack *obstack = &objfile->objfile_obstack; | |
80180f79 | 18100 | |
9a49df9d AB |
18101 | gdb_assert (default_type != NULL); |
18102 | ||
80180f79 SA |
18103 | if (attr == NULL || prop == NULL) |
18104 | return 0; | |
18105 | ||
4fc6c0d5 | 18106 | if (attr->form_is_block ()) |
80180f79 | 18107 | { |
8d749320 | 18108 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18109 | baton->property_type = default_type; |
80180f79 | 18110 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18111 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18112 | |
18113 | struct dwarf_block *block = attr->as_block (); | |
18114 | baton->locexpr.size = block->size; | |
18115 | baton->locexpr.data = block->data; | |
216a7e6b AB |
18116 | switch (attr->name) |
18117 | { | |
18118 | case DW_AT_string_length: | |
18119 | baton->locexpr.is_reference = true; | |
18120 | break; | |
18121 | default: | |
18122 | baton->locexpr.is_reference = false; | |
18123 | break; | |
18124 | } | |
8c2e4e06 SM |
18125 | |
18126 | prop->set_locexpr (baton); | |
18127 | gdb_assert (prop->baton () != NULL); | |
80180f79 | 18128 | } |
cd6c91b4 | 18129 | else if (attr->form_is_ref ()) |
80180f79 SA |
18130 | { |
18131 | struct dwarf2_cu *target_cu = cu; | |
18132 | struct die_info *target_die; | |
18133 | struct attribute *target_attr; | |
18134 | ||
18135 | target_die = follow_die_ref (die, attr, &target_cu); | |
18136 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
18137 | if (target_attr == NULL) |
18138 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
18139 | target_cu); | |
80180f79 SA |
18140 | if (target_attr == NULL) |
18141 | return 0; | |
18142 | ||
df25ebbd | 18143 | switch (target_attr->name) |
80180f79 | 18144 | { |
df25ebbd | 18145 | case DW_AT_location: |
cd6c91b4 | 18146 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 18147 | { |
8d749320 | 18148 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18149 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18150 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
8c2e4e06 SM |
18151 | prop->set_loclist (baton); |
18152 | gdb_assert (prop->baton () != NULL); | |
df25ebbd | 18153 | } |
4fc6c0d5 | 18154 | else if (target_attr->form_is_block ()) |
df25ebbd | 18155 | { |
8d749320 | 18156 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18157 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18158 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18159 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18160 | struct dwarf_block *block = target_attr->as_block (); |
18161 | baton->locexpr.size = block->size; | |
18162 | baton->locexpr.data = block->data; | |
9a49df9d | 18163 | baton->locexpr.is_reference = true; |
8c2e4e06 SM |
18164 | prop->set_locexpr (baton); |
18165 | gdb_assert (prop->baton () != NULL); | |
df25ebbd JB |
18166 | } |
18167 | else | |
18168 | { | |
18169 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
18170 | "dynamic property"); | |
18171 | return 0; | |
18172 | } | |
18173 | break; | |
18174 | case DW_AT_data_member_location: | |
18175 | { | |
18176 | LONGEST offset; | |
18177 | ||
18178 | if (!handle_data_member_location (target_die, target_cu, | |
18179 | &offset)) | |
18180 | return 0; | |
18181 | ||
8d749320 | 18182 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18183 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 18184 | target_cu); |
df25ebbd JB |
18185 | baton->offset_info.offset = offset; |
18186 | baton->offset_info.type = die_type (target_die, target_cu); | |
8c2e4e06 | 18187 | prop->set_addr_offset (baton); |
df25ebbd JB |
18188 | break; |
18189 | } | |
80180f79 SA |
18190 | } |
18191 | } | |
cd6c91b4 | 18192 | else if (attr->form_is_constant ()) |
8c2e4e06 | 18193 | prop->set_const_val (attr->constant_value (0)); |
80180f79 SA |
18194 | else |
18195 | { | |
18196 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
18197 | dwarf2_name (die, cu)); | |
18198 | return 0; | |
18199 | } | |
18200 | ||
18201 | return 1; | |
18202 | } | |
18203 | ||
09ba997f | 18204 | /* See read.h. */ |
9a49df9d | 18205 | |
09ba997f | 18206 | struct type * |
293e7e51 | 18207 | dwarf2_per_objfile::int_type (int size_in_bytes, bool unsigned_p) const |
9a49df9d | 18208 | { |
9a49df9d AB |
18209 | struct type *int_type; |
18210 | ||
18211 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
18212 | #define TRY_TYPE(F) \ |
18213 | int_type = (unsigned_p \ | |
18214 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
18215 | : objfile_type (objfile)->builtin_ ## F); \ | |
18216 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
18217 | return int_type |
18218 | ||
18219 | TRY_TYPE (char); | |
18220 | TRY_TYPE (short); | |
18221 | TRY_TYPE (int); | |
18222 | TRY_TYPE (long); | |
18223 | TRY_TYPE (long_long); | |
18224 | ||
18225 | #undef TRY_TYPE | |
18226 | ||
18227 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
18228 | } | |
18229 | ||
09ba997f | 18230 | /* See read.h. */ |
11a8b164 | 18231 | |
09ba997f | 18232 | struct type * |
293e7e51 | 18233 | dwarf2_cu::addr_sized_int_type (bool unsigned_p) const |
11a8b164 | 18234 | { |
293e7e51 SM |
18235 | int addr_size = this->per_cu->addr_size (); |
18236 | return this->per_objfile->int_type (addr_size, unsigned_p); | |
11a8b164 AB |
18237 | } |
18238 | ||
b86352cf AB |
18239 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
18240 | present (which is valid) then compute the default type based on the | |
18241 | compilation units address size. */ | |
18242 | ||
18243 | static struct type * | |
18244 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
18245 | { | |
18246 | struct type *index_type = die_type (die, cu); | |
18247 | ||
18248 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
18249 | without specifying a base type. | |
18250 | In that case, the base type must be set to the type of | |
18251 | the lower bound, upper bound or count, in that order, if any of these | |
18252 | three attributes references an object that has a type. | |
18253 | If no base type is found, the Dwarf-2 specifications say that | |
18254 | a signed integer type of size equal to the size of an address should | |
18255 | be used. | |
18256 | For the following C code: `extern char gdb_int [];' | |
18257 | GCC produces an empty range DIE. | |
18258 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
18259 | high bound or count are not yet handled by this code. */ | |
78134374 | 18260 | if (index_type->code () == TYPE_CODE_VOID) |
293e7e51 | 18261 | index_type = cu->addr_sized_int_type (false); |
b86352cf AB |
18262 | |
18263 | return index_type; | |
18264 | } | |
18265 | ||
a02abb62 JB |
18266 | /* Read the given DW_AT_subrange DIE. */ |
18267 | ||
f792889a | 18268 | static struct type * |
a02abb62 JB |
18269 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
18270 | { | |
4c9ad8c2 | 18271 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
18272 | struct type *range_type; |
18273 | struct attribute *attr; | |
729efb13 | 18274 | struct dynamic_prop low, high; |
4fae6e18 | 18275 | int low_default_is_valid; |
c451ebe5 | 18276 | int high_bound_is_count = 0; |
15d034d0 | 18277 | const char *name; |
d359392f | 18278 | ULONGEST negative_mask; |
e77813c8 | 18279 | |
b86352cf AB |
18280 | orig_base_type = read_subrange_index_type (die, cu); |
18281 | ||
4c9ad8c2 TT |
18282 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
18283 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
18284 | creating the range type, but we use the result of check_typedef | |
18285 | when examining properties of the type. */ | |
18286 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 18287 | |
7e314c57 JK |
18288 | /* The die_type call above may have already set the type for this DIE. */ |
18289 | range_type = get_die_type (die, cu); | |
18290 | if (range_type) | |
18291 | return range_type; | |
18292 | ||
8c2e4e06 | 18293 | high.set_const_val (0); |
729efb13 | 18294 | |
4fae6e18 JK |
18295 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
18296 | omitting DW_AT_lower_bound. */ | |
18297 | switch (cu->language) | |
6e70227d | 18298 | { |
4fae6e18 JK |
18299 | case language_c: |
18300 | case language_cplus: | |
8c2e4e06 | 18301 | low.set_const_val (0); |
4fae6e18 JK |
18302 | low_default_is_valid = 1; |
18303 | break; | |
18304 | case language_fortran: | |
8c2e4e06 | 18305 | low.set_const_val (1); |
4fae6e18 JK |
18306 | low_default_is_valid = 1; |
18307 | break; | |
18308 | case language_d: | |
4fae6e18 | 18309 | case language_objc: |
c44af4eb | 18310 | case language_rust: |
8c2e4e06 | 18311 | low.set_const_val (0); |
4fae6e18 JK |
18312 | low_default_is_valid = (cu->header.version >= 4); |
18313 | break; | |
18314 | case language_ada: | |
18315 | case language_m2: | |
18316 | case language_pascal: | |
8c2e4e06 | 18317 | low.set_const_val (1); |
4fae6e18 JK |
18318 | low_default_is_valid = (cu->header.version >= 4); |
18319 | break; | |
18320 | default: | |
8c2e4e06 | 18321 | low.set_const_val (0); |
4fae6e18 JK |
18322 | low_default_is_valid = 0; |
18323 | break; | |
a02abb62 JB |
18324 | } |
18325 | ||
e142c38c | 18326 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 18327 | if (attr != nullptr) |
9a49df9d | 18328 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 18329 | else if (!low_default_is_valid) |
b98664d3 | 18330 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
18331 | "- DIE at %s [in module %s]"), |
18332 | sect_offset_str (die->sect_off), | |
5e22e966 | 18333 | objfile_name (cu->per_objfile->objfile)); |
a02abb62 | 18334 | |
506f5c41 TV |
18335 | struct attribute *attr_ub, *attr_count; |
18336 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 18337 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 18338 | { |
506f5c41 | 18339 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 18340 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 18341 | { |
c451ebe5 | 18342 | /* If bounds are constant do the final calculation here. */ |
8c2e4e06 SM |
18343 | if (low.kind () == PROP_CONST && high.kind () == PROP_CONST) |
18344 | high.set_const_val (low.const_val () + high.const_val () - 1); | |
c451ebe5 SA |
18345 | else |
18346 | high_bound_is_count = 1; | |
c2ff108b | 18347 | } |
506f5c41 TV |
18348 | else |
18349 | { | |
18350 | if (attr_ub != NULL) | |
18351 | complaint (_("Unresolved DW_AT_upper_bound " | |
18352 | "- DIE at %s [in module %s]"), | |
18353 | sect_offset_str (die->sect_off), | |
5e22e966 | 18354 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 TV |
18355 | if (attr_count != NULL) |
18356 | complaint (_("Unresolved DW_AT_count " | |
18357 | "- DIE at %s [in module %s]"), | |
18358 | sect_offset_str (die->sect_off), | |
5e22e966 | 18359 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 | 18360 | } |
e77813c8 | 18361 | } |
a02abb62 | 18362 | |
4e962e74 TT |
18363 | LONGEST bias = 0; |
18364 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 18365 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 18366 | bias = bias_attr->constant_value (0); |
4e962e74 | 18367 | |
dbb9c2b1 JB |
18368 | /* Normally, the DWARF producers are expected to use a signed |
18369 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
18370 | But this is unfortunately not always the case, as witnessed | |
18371 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
18372 | is used instead. To work around that ambiguity, we treat | |
18373 | the bounds as signed, and thus sign-extend their values, when | |
18374 | the base type is signed. */ | |
6e70227d | 18375 | negative_mask = |
d359392f | 18376 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
8c2e4e06 | 18377 | if (low.kind () == PROP_CONST |
c6d940a9 | 18378 | && !base_type->is_unsigned () && (low.const_val () & negative_mask)) |
8c2e4e06 SM |
18379 | low.set_const_val (low.const_val () | negative_mask); |
18380 | if (high.kind () == PROP_CONST | |
c6d940a9 | 18381 | && !base_type->is_unsigned () && (high.const_val () & negative_mask)) |
8c2e4e06 | 18382 | high.set_const_val (high.const_val () | negative_mask); |
43bbcdc2 | 18383 | |
5bbd8269 AB |
18384 | /* Check for bit and byte strides. */ |
18385 | struct dynamic_prop byte_stride_prop; | |
18386 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
18387 | if (attr_byte_stride != nullptr) | |
18388 | { | |
293e7e51 | 18389 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
18390 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
18391 | prop_type); | |
18392 | } | |
18393 | ||
18394 | struct dynamic_prop bit_stride_prop; | |
18395 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
18396 | if (attr_bit_stride != nullptr) | |
18397 | { | |
18398 | /* It only makes sense to have either a bit or byte stride. */ | |
18399 | if (attr_byte_stride != nullptr) | |
18400 | { | |
18401 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
18402 | "- DIE at %s [in module %s]"), | |
18403 | sect_offset_str (die->sect_off), | |
5e22e966 | 18404 | objfile_name (cu->per_objfile->objfile)); |
5bbd8269 AB |
18405 | attr_bit_stride = nullptr; |
18406 | } | |
18407 | else | |
18408 | { | |
293e7e51 | 18409 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
18410 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
18411 | prop_type); | |
18412 | } | |
18413 | } | |
18414 | ||
18415 | if (attr_byte_stride != nullptr | |
18416 | || attr_bit_stride != nullptr) | |
18417 | { | |
18418 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
18419 | struct dynamic_prop *stride | |
18420 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
18421 | ||
18422 | range_type | |
18423 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
18424 | &high, bias, stride, byte_stride_p); | |
18425 | } | |
18426 | else | |
18427 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 18428 | |
c451ebe5 | 18429 | if (high_bound_is_count) |
599088e3 | 18430 | range_type->bounds ()->flag_upper_bound_is_count = 1; |
c451ebe5 | 18431 | |
c2ff108b JK |
18432 | /* Ada expects an empty array on no boundary attributes. */ |
18433 | if (attr == NULL && cu->language != language_ada) | |
8c2e4e06 | 18434 | range_type->bounds ()->high.set_undefined (); |
c2ff108b | 18435 | |
39cbfefa DJ |
18436 | name = dwarf2_name (die, cu); |
18437 | if (name) | |
d0e39ea2 | 18438 | range_type->set_name (name); |
6e70227d | 18439 | |
e142c38c | 18440 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 18441 | if (attr != nullptr) |
a02abb62 JB |
18442 | TYPE_LENGTH (range_type) = DW_UNSND (attr); |
18443 | ||
2b4424c3 TT |
18444 | maybe_set_alignment (cu, die, range_type); |
18445 | ||
7e314c57 JK |
18446 | set_die_type (die, range_type, cu); |
18447 | ||
18448 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
18449 | set_descriptive_type (range_type, die, cu); |
18450 | ||
7e314c57 | 18451 | return range_type; |
a02abb62 | 18452 | } |
6e70227d | 18453 | |
f792889a | 18454 | static struct type * |
81a17f79 JB |
18455 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
18456 | { | |
18457 | struct type *type; | |
81a17f79 | 18458 | |
5e22e966 | 18459 | type = init_type (cu->per_objfile->objfile, TYPE_CODE_VOID, 0, NULL); |
d0e39ea2 | 18460 | type->set_name (dwarf2_name (die, cu)); |
81a17f79 | 18461 | |
74a2f8ff | 18462 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 18463 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
18464 | such a type, we treat it as a stub, and try to resolve it later on, |
18465 | when needed. */ | |
18466 | if (cu->language == language_ada) | |
b4b73759 | 18467 | type->set_is_stub (true); |
74a2f8ff | 18468 | |
f792889a | 18469 | return set_die_type (die, type, cu); |
81a17f79 | 18470 | } |
a02abb62 | 18471 | |
639d11d3 DC |
18472 | /* Read a single die and all its descendents. Set the die's sibling |
18473 | field to NULL; set other fields in the die correctly, and set all | |
18474 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
18475 | location of the info_ptr after reading all of those dies. PARENT | |
18476 | is the parent of the die in question. */ | |
18477 | ||
18478 | static struct die_info * | |
dee91e82 | 18479 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
18480 | const gdb_byte *info_ptr, |
18481 | const gdb_byte **new_info_ptr, | |
dee91e82 | 18482 | struct die_info *parent) |
639d11d3 DC |
18483 | { |
18484 | struct die_info *die; | |
d521ce57 | 18485 | const gdb_byte *cur_ptr; |
639d11d3 | 18486 | |
3e225074 | 18487 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
18488 | if (die == NULL) |
18489 | { | |
18490 | *new_info_ptr = cur_ptr; | |
18491 | return NULL; | |
18492 | } | |
93311388 | 18493 | store_in_ref_table (die, reader->cu); |
639d11d3 | 18494 | |
3e225074 | 18495 | if (die->has_children) |
bf6af496 | 18496 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
18497 | else |
18498 | { | |
18499 | die->child = NULL; | |
18500 | *new_info_ptr = cur_ptr; | |
18501 | } | |
18502 | ||
18503 | die->sibling = NULL; | |
18504 | die->parent = parent; | |
18505 | return die; | |
18506 | } | |
18507 | ||
18508 | /* Read a die, all of its descendents, and all of its siblings; set | |
18509 | all of the fields of all of the dies correctly. Arguments are as | |
18510 | in read_die_and_children. */ | |
18511 | ||
18512 | static struct die_info * | |
bf6af496 | 18513 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
18514 | const gdb_byte *info_ptr, |
18515 | const gdb_byte **new_info_ptr, | |
bf6af496 | 18516 | struct die_info *parent) |
639d11d3 DC |
18517 | { |
18518 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 18519 | const gdb_byte *cur_ptr; |
639d11d3 | 18520 | |
c906108c | 18521 | cur_ptr = info_ptr; |
639d11d3 DC |
18522 | first_die = last_sibling = NULL; |
18523 | ||
18524 | while (1) | |
c906108c | 18525 | { |
639d11d3 | 18526 | struct die_info *die |
dee91e82 | 18527 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 18528 | |
1d325ec1 | 18529 | if (die == NULL) |
c906108c | 18530 | { |
639d11d3 DC |
18531 | *new_info_ptr = cur_ptr; |
18532 | return first_die; | |
c906108c | 18533 | } |
1d325ec1 DJ |
18534 | |
18535 | if (!first_die) | |
18536 | first_die = die; | |
c906108c | 18537 | else |
1d325ec1 DJ |
18538 | last_sibling->sibling = die; |
18539 | ||
18540 | last_sibling = die; | |
c906108c | 18541 | } |
c906108c SS |
18542 | } |
18543 | ||
bf6af496 DE |
18544 | /* Read a die, all of its descendents, and all of its siblings; set |
18545 | all of the fields of all of the dies correctly. Arguments are as | |
18546 | in read_die_and_children. | |
18547 | This the main entry point for reading a DIE and all its children. */ | |
18548 | ||
18549 | static struct die_info * | |
18550 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
18551 | const gdb_byte *info_ptr, |
18552 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
18553 | struct die_info *parent) |
18554 | { | |
18555 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
18556 | new_info_ptr, parent); | |
18557 | ||
b4f54984 | 18558 | if (dwarf_die_debug) |
bf6af496 DE |
18559 | { |
18560 | fprintf_unfiltered (gdb_stdlog, | |
18561 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18562 | reader->die_section->get_name (), |
bf6af496 DE |
18563 | (unsigned) (info_ptr - reader->die_section->buffer), |
18564 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18565 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
18566 | } |
18567 | ||
18568 | return die; | |
18569 | } | |
18570 | ||
3019eac3 DE |
18571 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18572 | attributes. | |
18573 | The caller is responsible for filling in the extra attributes | |
18574 | and updating (*DIEP)->num_attrs. | |
18575 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18576 | except for its child, sibling, and parent fields. */ |
93311388 | 18577 | |
d521ce57 | 18578 | static const gdb_byte * |
3019eac3 | 18579 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18580 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 18581 | int num_extra_attrs) |
93311388 | 18582 | { |
b64f50a1 | 18583 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
18584 | struct abbrev_info *abbrev; |
18585 | struct die_info *die; | |
18586 | struct dwarf2_cu *cu = reader->cu; | |
18587 | bfd *abfd = reader->abfd; | |
18588 | ||
9c541725 | 18589 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18590 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18591 | info_ptr += bytes_read; | |
18592 | if (!abbrev_number) | |
18593 | { | |
18594 | *diep = NULL; | |
93311388 DE |
18595 | return info_ptr; |
18596 | } | |
18597 | ||
685af9cd | 18598 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18599 | if (!abbrev) |
348e048f DE |
18600 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18601 | abbrev_number, | |
18602 | bfd_get_filename (abfd)); | |
18603 | ||
3019eac3 | 18604 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18605 | die->sect_off = sect_off; |
93311388 DE |
18606 | die->tag = abbrev->tag; |
18607 | die->abbrev = abbrev_number; | |
3e225074 | 18608 | die->has_children = abbrev->has_children; |
93311388 | 18609 | |
3019eac3 DE |
18610 | /* Make the result usable. |
18611 | The caller needs to update num_attrs after adding the extra | |
18612 | attributes. */ | |
93311388 DE |
18613 | die->num_attrs = abbrev->num_attrs; |
18614 | ||
7a5f294d | 18615 | bool any_need_reprocess = false; |
93311388 | 18616 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e | 18617 | { |
7a5f294d TT |
18618 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
18619 | info_ptr); | |
18620 | if (die->attrs[i].requires_reprocessing_p ()) | |
18621 | any_need_reprocess = true; | |
18a8505e AT |
18622 | } |
18623 | ||
052c8bb8 | 18624 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
18a8505e AT |
18625 | if (attr != nullptr) |
18626 | cu->str_offsets_base = DW_UNSND (attr); | |
93311388 | 18627 | |
41144253 | 18628 | attr = die->attr (DW_AT_loclists_base); |
18629 | if (attr != nullptr) | |
18630 | cu->loclist_base = DW_UNSND (attr); | |
18631 | ||
a39fdb41 | 18632 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
18633 | if (maybe_addr_base.has_value ()) |
18634 | cu->addr_base = *maybe_addr_base; | |
d0ce17d8 CT |
18635 | |
18636 | attr = die->attr (DW_AT_rnglists_base); | |
18637 | if (attr != nullptr) | |
18638 | cu->ranges_base = DW_UNSND (attr); | |
18639 | ||
7a5f294d TT |
18640 | if (any_need_reprocess) |
18641 | { | |
18642 | for (i = 0; i < abbrev->num_attrs; ++i) | |
18643 | { | |
18644 | if (die->attrs[i].requires_reprocessing_p ()) | |
18645 | read_attribute_reprocess (reader, &die->attrs[i], die->tag); | |
18646 | } | |
18647 | } | |
93311388 | 18648 | *diep = die; |
93311388 DE |
18649 | return info_ptr; |
18650 | } | |
18651 | ||
3019eac3 DE |
18652 | /* Read a die and all its attributes. |
18653 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18654 | except for its child, sibling, and parent fields. */ |
3019eac3 | 18655 | |
d521ce57 | 18656 | static const gdb_byte * |
3019eac3 | 18657 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 18658 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 18659 | { |
d521ce57 | 18660 | const gdb_byte *result; |
bf6af496 | 18661 | |
3e225074 | 18662 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 18663 | |
b4f54984 | 18664 | if (dwarf_die_debug) |
bf6af496 DE |
18665 | { |
18666 | fprintf_unfiltered (gdb_stdlog, | |
18667 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18668 | reader->die_section->get_name (), |
bf6af496 DE |
18669 | (unsigned) (info_ptr - reader->die_section->buffer), |
18670 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18671 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18672 | } |
18673 | ||
18674 | return result; | |
3019eac3 | 18675 | } |
433df2d4 | 18676 | \f |
c906108c | 18677 | |
72bf9492 DJ |
18678 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18679 | symbol for. */ | |
18680 | ||
18681 | static int | |
18682 | is_type_tag_for_partial (int tag) | |
18683 | { | |
18684 | switch (tag) | |
18685 | { | |
18686 | #if 0 | |
18687 | /* Some types that would be reasonable to generate partial symbols for, | |
18688 | that we don't at present. */ | |
18689 | case DW_TAG_array_type: | |
18690 | case DW_TAG_file_type: | |
18691 | case DW_TAG_ptr_to_member_type: | |
18692 | case DW_TAG_set_type: | |
18693 | case DW_TAG_string_type: | |
18694 | case DW_TAG_subroutine_type: | |
18695 | #endif | |
18696 | case DW_TAG_base_type: | |
18697 | case DW_TAG_class_type: | |
680b30c7 | 18698 | case DW_TAG_interface_type: |
72bf9492 DJ |
18699 | case DW_TAG_enumeration_type: |
18700 | case DW_TAG_structure_type: | |
18701 | case DW_TAG_subrange_type: | |
18702 | case DW_TAG_typedef: | |
18703 | case DW_TAG_union_type: | |
18704 | return 1; | |
18705 | default: | |
18706 | return 0; | |
18707 | } | |
18708 | } | |
18709 | ||
18710 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18711 | ||
18712 | static struct partial_die_info * | |
dee91e82 | 18713 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18714 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18715 | { |
dee91e82 | 18716 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 18717 | struct objfile *objfile = cu->per_objfile->objfile; |
72bf9492 | 18718 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18719 | unsigned int bytes_read; |
5afb4e99 | 18720 | unsigned int load_all = 0; |
72bf9492 DJ |
18721 | int nesting_level = 1; |
18722 | ||
18723 | parent_die = NULL; | |
18724 | last_die = NULL; | |
18725 | ||
7adf1e79 DE |
18726 | gdb_assert (cu->per_cu != NULL); |
18727 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18728 | load_all = 1; |
18729 | ||
72bf9492 DJ |
18730 | cu->partial_dies |
18731 | = htab_create_alloc_ex (cu->header.length / 12, | |
18732 | partial_die_hash, | |
18733 | partial_die_eq, | |
18734 | NULL, | |
18735 | &cu->comp_unit_obstack, | |
18736 | hashtab_obstack_allocate, | |
18737 | dummy_obstack_deallocate); | |
18738 | ||
72bf9492 DJ |
18739 | while (1) |
18740 | { | |
685af9cd | 18741 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18742 | |
18743 | /* A NULL abbrev means the end of a series of children. */ | |
18744 | if (abbrev == NULL) | |
18745 | { | |
18746 | if (--nesting_level == 0) | |
cd9983dd YQ |
18747 | return first_die; |
18748 | ||
72bf9492 DJ |
18749 | info_ptr += bytes_read; |
18750 | last_die = parent_die; | |
18751 | parent_die = parent_die->die_parent; | |
18752 | continue; | |
18753 | } | |
18754 | ||
98bfdba5 PA |
18755 | /* Check for template arguments. We never save these; if |
18756 | they're seen, we just mark the parent, and go on our way. */ | |
18757 | if (parent_die != NULL | |
18758 | && cu->language == language_cplus | |
18759 | && (abbrev->tag == DW_TAG_template_type_param | |
18760 | || abbrev->tag == DW_TAG_template_value_param)) | |
18761 | { | |
18762 | parent_die->has_template_arguments = 1; | |
18763 | ||
18764 | if (!load_all) | |
18765 | { | |
18766 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18767 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18768 | continue; |
18769 | } | |
18770 | } | |
18771 | ||
0d99eb77 | 18772 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18773 | Skip their other children. */ |
18774 | if (!load_all | |
18775 | && cu->language == language_cplus | |
18776 | && parent_die != NULL | |
f9b5d5ea TV |
18777 | && parent_die->tag == DW_TAG_subprogram |
18778 | && abbrev->tag != DW_TAG_inlined_subroutine) | |
98bfdba5 | 18779 | { |
dee91e82 | 18780 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18781 | continue; |
18782 | } | |
18783 | ||
5afb4e99 DJ |
18784 | /* Check whether this DIE is interesting enough to save. Normally |
18785 | we would not be interested in members here, but there may be | |
18786 | later variables referencing them via DW_AT_specification (for | |
18787 | static members). */ | |
18788 | if (!load_all | |
18789 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18790 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18791 | && abbrev->tag != DW_TAG_enumerator |
18792 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18793 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18794 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18795 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18796 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18797 | && abbrev->tag != DW_TAG_module |
95554aad | 18798 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18799 | && abbrev->tag != DW_TAG_imported_unit |
18800 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18801 | { |
18802 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18803 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18804 | continue; |
18805 | } | |
18806 | ||
6f06d47b YQ |
18807 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18808 | abbrev); | |
cd9983dd | 18809 | |
48fbe735 | 18810 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18811 | |
18812 | /* This two-pass algorithm for processing partial symbols has a | |
18813 | high cost in cache pressure. Thus, handle some simple cases | |
18814 | here which cover the majority of C partial symbols. DIEs | |
18815 | which neither have specification tags in them, nor could have | |
18816 | specification tags elsewhere pointing at them, can simply be | |
18817 | processed and discarded. | |
18818 | ||
18819 | This segment is also optional; scan_partial_symbols and | |
18820 | add_partial_symbol will handle these DIEs if we chain | |
18821 | them in normally. When compilers which do not emit large | |
18822 | quantities of duplicate debug information are more common, | |
18823 | this code can probably be removed. */ | |
18824 | ||
18825 | /* Any complete simple types at the top level (pretty much all | |
18826 | of them, for a language without namespaces), can be processed | |
18827 | directly. */ | |
18828 | if (parent_die == NULL | |
cd9983dd YQ |
18829 | && pdi.has_specification == 0 |
18830 | && pdi.is_declaration == 0 | |
18831 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18832 | || pdi.tag == DW_TAG_base_type | |
18833 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18834 | { |
7d00ffec | 18835 | if (building_psymtab && pdi.raw_name != NULL) |
f0fbb768 TT |
18836 | add_partial_symbol (&pdi, cu); |
18837 | ||
cd9983dd | 18838 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18839 | continue; |
18840 | } | |
18841 | ||
d8228535 JK |
18842 | /* The exception for DW_TAG_typedef with has_children above is |
18843 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18844 | type_name_or_error will error on such types later. |
d8228535 JK |
18845 | |
18846 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18847 | it could not find the child DIEs referenced later, this is checked | |
18848 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18849 | ||
cd9983dd | 18850 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18851 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18852 | "- DIE at %s [in module %s]"), |
cd9983dd | 18853 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18854 | |
72bf9492 DJ |
18855 | /* If we're at the second level, and we're an enumerator, and |
18856 | our parent has no specification (meaning possibly lives in a | |
18857 | namespace elsewhere), then we can add the partial symbol now | |
18858 | instead of queueing it. */ | |
cd9983dd | 18859 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18860 | && parent_die != NULL |
18861 | && parent_die->die_parent == NULL | |
18862 | && parent_die->tag == DW_TAG_enumeration_type | |
18863 | && parent_die->has_specification == 0) | |
18864 | { | |
7d00ffec | 18865 | if (pdi.raw_name == NULL) |
b98664d3 | 18866 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18867 | else if (building_psymtab) |
f0fbb768 | 18868 | add_partial_symbol (&pdi, cu); |
72bf9492 | 18869 | |
cd9983dd | 18870 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18871 | continue; |
18872 | } | |
18873 | ||
cd9983dd | 18874 | struct partial_die_info *part_die |
6f06d47b | 18875 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18876 | |
72bf9492 DJ |
18877 | /* We'll save this DIE so link it in. */ |
18878 | part_die->die_parent = parent_die; | |
18879 | part_die->die_sibling = NULL; | |
18880 | part_die->die_child = NULL; | |
18881 | ||
18882 | if (last_die && last_die == parent_die) | |
18883 | last_die->die_child = part_die; | |
18884 | else if (last_die) | |
18885 | last_die->die_sibling = part_die; | |
18886 | ||
18887 | last_die = part_die; | |
18888 | ||
18889 | if (first_die == NULL) | |
18890 | first_die = part_die; | |
18891 | ||
18892 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18893 | find interesting need to be in the hash table, because we | |
18894 | also have the parent/sibling/child chains; only those that we | |
18895 | might refer to by offset later during partial symbol reading. | |
18896 | ||
18897 | For now this means things that might have be the target of a | |
18898 | DW_AT_specification, DW_AT_abstract_origin, or | |
18899 | DW_AT_extension. DW_AT_extension will refer only to | |
18900 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18901 | many things under the function DIE, but we do not recurse | |
18902 | into function DIEs during partial symbol reading) and | |
18903 | possibly variables as well; DW_AT_specification refers to | |
18904 | declarations. Declarations ought to have the DW_AT_declaration | |
18905 | flag. It happens that GCC forgets to put it in sometimes, but | |
18906 | only for functions, not for types. | |
18907 | ||
18908 | Adding more things than necessary to the hash table is harmless | |
18909 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18910 | wasted time in find_partial_die, when we reread the compilation |
18911 | unit with load_all_dies set. */ | |
72bf9492 | 18912 | |
5afb4e99 | 18913 | if (load_all |
72929c62 | 18914 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18915 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18916 | || abbrev->tag == DW_TAG_variable |
18917 | || abbrev->tag == DW_TAG_namespace | |
18918 | || part_die->is_declaration) | |
18919 | { | |
18920 | void **slot; | |
18921 | ||
18922 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18923 | to_underlying (part_die->sect_off), |
18924 | INSERT); | |
72bf9492 DJ |
18925 | *slot = part_die; |
18926 | } | |
18927 | ||
72bf9492 | 18928 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18929 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18930 | languages we have to, so that we can get at method physnames |
18931 | to infer fully qualified class names, for DW_AT_specification, | |
18932 | and for C++ template arguments. For C++, we also look one level | |
18933 | inside functions to find template arguments (if the name of the | |
18934 | function does not already contain the template arguments). | |
bc30ff58 | 18935 | |
0a4b0913 AB |
18936 | For Ada and Fortran, we need to scan the children of subprograms |
18937 | and lexical blocks as well because these languages allow the | |
18938 | definition of nested entities that could be interesting for the | |
18939 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 18940 | if (last_die->has_children |
5afb4e99 DJ |
18941 | && (load_all |
18942 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18943 | || last_die->tag == DW_TAG_module |
72bf9492 | 18944 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18945 | || (cu->language == language_cplus |
18946 | && last_die->tag == DW_TAG_subprogram | |
7d00ffec TT |
18947 | && (last_die->raw_name == NULL |
18948 | || strchr (last_die->raw_name, '<') == NULL)) | |
72bf9492 DJ |
18949 | || (cu->language != language_c |
18950 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18951 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18952 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 18953 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
18954 | || ((cu->language == language_ada |
18955 | || cu->language == language_fortran) | |
bc30ff58 JB |
18956 | && (last_die->tag == DW_TAG_subprogram |
18957 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18958 | { |
18959 | nesting_level++; | |
18960 | parent_die = last_die; | |
18961 | continue; | |
18962 | } | |
18963 | ||
18964 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18965 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18966 | |
18967 | /* Back to the top, do it again. */ | |
18968 | } | |
18969 | } | |
18970 | ||
6f06d47b YQ |
18971 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18972 | struct abbrev_info *abbrev) | |
18973 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18974 | { | |
18975 | } | |
18976 | ||
7d00ffec TT |
18977 | /* See class definition. */ |
18978 | ||
18979 | const char * | |
18980 | partial_die_info::name (dwarf2_cu *cu) | |
18981 | { | |
18982 | if (!canonical_name && raw_name != nullptr) | |
18983 | { | |
18984 | struct objfile *objfile = cu->per_objfile->objfile; | |
18985 | raw_name = dwarf2_canonicalize_name (raw_name, cu, objfile); | |
18986 | canonical_name = 1; | |
18987 | } | |
18988 | ||
18989 | return raw_name; | |
18990 | } | |
18991 | ||
35cc7ed7 YQ |
18992 | /* Read a minimal amount of information into the minimal die structure. |
18993 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18994 | |
48fbe735 YQ |
18995 | const gdb_byte * |
18996 | partial_die_info::read (const struct die_reader_specs *reader, | |
18997 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18998 | { |
dee91e82 | 18999 | struct dwarf2_cu *cu = reader->cu; |
976ca316 | 19000 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
fa238c03 | 19001 | unsigned int i; |
c5aa993b | 19002 | int has_low_pc_attr = 0; |
c906108c | 19003 | int has_high_pc_attr = 0; |
91da1414 | 19004 | int high_pc_relative = 0; |
c906108c | 19005 | |
fd0a254f | 19006 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 19007 | { |
e7da7f8f | 19008 | attribute attr; |
7a5f294d | 19009 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
18a8505e AT |
19010 | /* String and address offsets that need to do the reprocessing have |
19011 | already been read at this point, so there is no need to wait until | |
19012 | the loop terminates to do the reprocessing. */ | |
7a5f294d | 19013 | if (attr.requires_reprocessing_p ()) |
d0ce17d8 | 19014 | read_attribute_reprocess (reader, &attr, tag); |
c906108c | 19015 | /* Store the data if it is of an attribute we want to keep in a |
c5aa993b | 19016 | partial symbol table. */ |
c906108c SS |
19017 | switch (attr.name) |
19018 | { | |
19019 | case DW_AT_name: | |
48fbe735 | 19020 | switch (tag) |
71c25dea TT |
19021 | { |
19022 | case DW_TAG_compile_unit: | |
95554aad | 19023 | case DW_TAG_partial_unit: |
348e048f | 19024 | case DW_TAG_type_unit: |
71c25dea TT |
19025 | /* Compilation units have a DW_AT_name that is a filename, not |
19026 | a source language identifier. */ | |
19027 | case DW_TAG_enumeration_type: | |
19028 | case DW_TAG_enumerator: | |
19029 | /* These tags always have simple identifiers already; no need | |
19030 | to canonicalize them. */ | |
7d00ffec | 19031 | canonical_name = 1; |
2c830f54 | 19032 | raw_name = attr.as_string (); |
71c25dea TT |
19033 | break; |
19034 | default: | |
7d00ffec | 19035 | canonical_name = 0; |
2c830f54 | 19036 | raw_name = attr.as_string (); |
71c25dea TT |
19037 | break; |
19038 | } | |
c906108c | 19039 | break; |
31ef98ae | 19040 | case DW_AT_linkage_name: |
c906108c | 19041 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
19042 | /* Note that both forms of linkage name might appear. We |
19043 | assume they will be the same, and we only store the last | |
19044 | one we see. */ | |
95f982e5 | 19045 | linkage_name = attr.as_string (); |
c906108c SS |
19046 | break; |
19047 | case DW_AT_low_pc: | |
19048 | has_low_pc_attr = 1; | |
95f982e5 | 19049 | lowpc = attr.as_address (); |
c906108c SS |
19050 | break; |
19051 | case DW_AT_high_pc: | |
19052 | has_high_pc_attr = 1; | |
95f982e5 | 19053 | highpc = attr.as_address (); |
cd6c91b4 | 19054 | if (cu->header.version >= 4 && attr.form_is_constant ()) |
31aa7e4e | 19055 | high_pc_relative = 1; |
c906108c SS |
19056 | break; |
19057 | case DW_AT_location: | |
0963b4bd | 19058 | /* Support the .debug_loc offsets. */ |
4fc6c0d5 | 19059 | if (attr.form_is_block ()) |
8e19ed76 | 19060 | { |
9d2246fc | 19061 | d.locdesc = attr.as_block (); |
8e19ed76 | 19062 | } |
cd6c91b4 | 19063 | else if (attr.form_is_section_offset ()) |
8e19ed76 | 19064 | { |
4d3c2250 | 19065 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
19066 | } |
19067 | else | |
19068 | { | |
4d3c2250 KB |
19069 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
19070 | "partial symbol information"); | |
8e19ed76 | 19071 | } |
c906108c | 19072 | break; |
c906108c | 19073 | case DW_AT_external: |
48fbe735 | 19074 | is_external = DW_UNSND (&attr); |
c906108c SS |
19075 | break; |
19076 | case DW_AT_declaration: | |
48fbe735 | 19077 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
19078 | break; |
19079 | case DW_AT_type: | |
48fbe735 | 19080 | has_type = 1; |
c906108c SS |
19081 | break; |
19082 | case DW_AT_abstract_origin: | |
19083 | case DW_AT_specification: | |
72bf9492 | 19084 | case DW_AT_extension: |
48fbe735 | 19085 | has_specification = 1; |
0826b30a | 19086 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 19087 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 19088 | || cu->per_cu->is_dwz); |
c906108c SS |
19089 | break; |
19090 | case DW_AT_sibling: | |
19091 | /* Ignore absolute siblings, they might point outside of | |
19092 | the current compile unit. */ | |
19093 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 19094 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 19095 | else |
b9502d3f | 19096 | { |
48fbe735 | 19097 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 19098 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 19099 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
19100 | |
19101 | if (sibling_ptr < info_ptr) | |
b98664d3 | 19102 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 19103 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 19104 | reader->die_section->overflow_complaint (); |
b9502d3f | 19105 | else |
48fbe735 | 19106 | sibling = sibling_ptr; |
b9502d3f | 19107 | } |
c906108c | 19108 | break; |
fa4028e9 | 19109 | case DW_AT_byte_size: |
48fbe735 | 19110 | has_byte_size = 1; |
fa4028e9 | 19111 | break; |
ff908ebf | 19112 | case DW_AT_const_value: |
48fbe735 | 19113 | has_const_value = 1; |
ff908ebf | 19114 | break; |
68511cec CES |
19115 | case DW_AT_calling_convention: |
19116 | /* DWARF doesn't provide a way to identify a program's source-level | |
19117 | entry point. DW_AT_calling_convention attributes are only meant | |
19118 | to describe functions' calling conventions. | |
19119 | ||
19120 | However, because it's a necessary piece of information in | |
0c1b455e TT |
19121 | Fortran, and before DWARF 4 DW_CC_program was the only |
19122 | piece of debugging information whose definition refers to | |
19123 | a 'main program' at all, several compilers marked Fortran | |
19124 | main programs with DW_CC_program --- even when those | |
19125 | functions use the standard calling conventions. | |
19126 | ||
19127 | Although DWARF now specifies a way to provide this | |
19128 | information, we support this practice for backward | |
19129 | compatibility. */ | |
68511cec | 19130 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 19131 | && cu->language == language_fortran) |
48fbe735 | 19132 | main_subprogram = 1; |
68511cec | 19133 | break; |
481860b3 GB |
19134 | case DW_AT_inline: |
19135 | if (DW_UNSND (&attr) == DW_INL_inlined | |
19136 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 19137 | may_be_inlined = 1; |
481860b3 | 19138 | break; |
95554aad TT |
19139 | |
19140 | case DW_AT_import: | |
48fbe735 | 19141 | if (tag == DW_TAG_imported_unit) |
36586728 | 19142 | { |
0826b30a | 19143 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 19144 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
19145 | || cu->per_cu->is_dwz); |
19146 | } | |
95554aad TT |
19147 | break; |
19148 | ||
0c1b455e | 19149 | case DW_AT_main_subprogram: |
48fbe735 | 19150 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
19151 | break; |
19152 | ||
05caa1d2 TT |
19153 | case DW_AT_ranges: |
19154 | { | |
d0ce17d8 CT |
19155 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO |
19156 | skeleton. We take advantage of the fact the DW_AT_ranges | |
19157 | does not appear in DW_TAG_compile_unit of DWO files. | |
19158 | ||
19159 | Attributes of the form DW_FORM_rnglistx have already had | |
19160 | their value changed by read_rnglist_index and already | |
19161 | include DW_AT_rnglists_base, so don't need to add the ranges | |
19162 | base, either. */ | |
19163 | int need_ranges_base = (tag != DW_TAG_compile_unit | |
19164 | && attr.form != DW_FORM_rnglistx); | |
05caa1d2 TT |
19165 | unsigned int ranges_offset = (DW_UNSND (&attr) |
19166 | + (need_ranges_base | |
19167 | ? cu->ranges_base | |
19168 | : 0)); | |
19169 | ||
19170 | /* Value of the DW_AT_ranges attribute is the offset in the | |
19171 | .debug_ranges section. */ | |
19172 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
d0ce17d8 | 19173 | nullptr, tag)) |
05caa1d2 TT |
19174 | has_pc_info = 1; |
19175 | } | |
19176 | break; | |
19177 | ||
c906108c SS |
19178 | default: |
19179 | break; | |
19180 | } | |
19181 | } | |
19182 | ||
10d06d82 TT |
19183 | /* For Ada, if both the name and the linkage name appear, we prefer |
19184 | the latter. This lets "catch exception" work better, regardless | |
19185 | of the order in which the name and linkage name were emitted. | |
19186 | Really, though, this is just a workaround for the fact that gdb | |
19187 | doesn't store both the name and the linkage name. */ | |
19188 | if (cu->language == language_ada && linkage_name != nullptr) | |
7d00ffec | 19189 | raw_name = linkage_name; |
10d06d82 | 19190 | |
91da1414 | 19191 | if (high_pc_relative) |
48fbe735 | 19192 | highpc += lowpc; |
91da1414 | 19193 | |
9373cf26 JK |
19194 | if (has_low_pc_attr && has_high_pc_attr) |
19195 | { | |
19196 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
19197 | eliminate duplicate copies of functions and vtables and such. | |
19198 | The linker will arbitrarily choose one and discard the others. | |
19199 | The AT_*_pc values for such functions refer to local labels in | |
19200 | these sections. If the section from that file was discarded, the | |
19201 | labels are not in the output, so the relocs get a value of 0. | |
19202 | If this is a discarded function, mark the pc bounds as invalid, | |
19203 | so that GDB will ignore it. */ | |
976ca316 | 19204 | if (lowpc == 0 && !per_objfile->per_bfd->has_section_at_zero) |
9373cf26 | 19205 | { |
976ca316 | 19206 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19207 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19208 | |
b98664d3 | 19209 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 19210 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19211 | paddress (gdbarch, lowpc), |
19212 | sect_offset_str (sect_off), | |
9d8780f0 | 19213 | objfile_name (objfile)); |
9373cf26 JK |
19214 | } |
19215 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 19216 | else if (lowpc >= highpc) |
9373cf26 | 19217 | { |
976ca316 | 19218 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19219 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19220 | |
b98664d3 | 19221 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 19222 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19223 | paddress (gdbarch, lowpc), |
19224 | paddress (gdbarch, highpc), | |
19225 | sect_offset_str (sect_off), | |
9c541725 | 19226 | objfile_name (objfile)); |
9373cf26 JK |
19227 | } |
19228 | else | |
48fbe735 | 19229 | has_pc_info = 1; |
9373cf26 | 19230 | } |
85cbf3d3 | 19231 | |
c906108c SS |
19232 | return info_ptr; |
19233 | } | |
19234 | ||
72bf9492 DJ |
19235 | /* Find a cached partial DIE at OFFSET in CU. */ |
19236 | ||
d590ff25 YQ |
19237 | struct partial_die_info * |
19238 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
19239 | { |
19240 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 19241 | struct partial_die_info part_die (sect_off); |
72bf9492 | 19242 | |
9a3c8263 | 19243 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 19244 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 19245 | to_underlying (sect_off))); |
72bf9492 | 19246 | |
72bf9492 DJ |
19247 | return lookup_die; |
19248 | } | |
19249 | ||
348e048f DE |
19250 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
19251 | except in the case of .debug_types DIEs which do not reference | |
19252 | outside their CU (they do however referencing other types via | |
55f1336d | 19253 | DW_FORM_ref_sig8). */ |
72bf9492 | 19254 | |
122cf0f2 | 19255 | static const struct cu_partial_die_info |
9c541725 | 19256 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 19257 | { |
976ca316 SM |
19258 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19259 | struct objfile *objfile = per_objfile->objfile; | |
5afb4e99 | 19260 | struct partial_die_info *pd = NULL; |
72bf9492 | 19261 | |
36586728 | 19262 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 19263 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 19264 | { |
d590ff25 | 19265 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 19266 | if (pd != NULL) |
fb816e8b | 19267 | return { cu, pd }; |
0d99eb77 DE |
19268 | /* We missed recording what we needed. |
19269 | Load all dies and try again. */ | |
5afb4e99 | 19270 | } |
0d99eb77 DE |
19271 | else |
19272 | { | |
19273 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 19274 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 19275 | { |
9d8780f0 SM |
19276 | error (_("Dwarf Error: Type Unit at offset %s contains" |
19277 | " external reference to offset %s [in module %s].\n"), | |
19278 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
19279 | bfd_get_filename (objfile->obfd)); |
19280 | } | |
7188ed02 SM |
19281 | dwarf2_per_cu_data *per_cu |
19282 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
976ca316 | 19283 | per_objfile); |
72bf9492 | 19284 | |
976ca316 | 19285 | cu = per_objfile->get_cu (per_cu); |
7188ed02 | 19286 | if (cu == NULL || cu->partial_dies == NULL) |
976ca316 | 19287 | load_partial_comp_unit (per_cu, per_objfile, nullptr); |
ae038cb0 | 19288 | |
976ca316 | 19289 | cu = per_objfile->get_cu (per_cu); |
7188ed02 SM |
19290 | |
19291 | cu->last_used = 0; | |
19292 | pd = cu->find_partial_die (sect_off); | |
0d99eb77 | 19293 | } |
5afb4e99 | 19294 | |
dee91e82 DE |
19295 | /* If we didn't find it, and not all dies have been loaded, |
19296 | load them all and try again. */ | |
19297 | ||
7188ed02 | 19298 | if (pd == NULL && cu->per_cu->load_all_dies == 0) |
5afb4e99 | 19299 | { |
7188ed02 | 19300 | cu->per_cu->load_all_dies = 1; |
fd820528 DE |
19301 | |
19302 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
19303 | THIS_CU->cu may already be in use. So we can't just free it and | |
19304 | replace its DIEs with the ones we read in. Instead, we leave those | |
19305 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
19306 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
19307 | set. */ | |
976ca316 | 19308 | load_partial_comp_unit (cu->per_cu, per_objfile, cu); |
5afb4e99 | 19309 | |
7188ed02 | 19310 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
19311 | } |
19312 | ||
19313 | if (pd == NULL) | |
521894aa | 19314 | error (_("Dwarf Error: Cannot not find DIE at %s [from module %s]\n"), |
9d8780f0 | 19315 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
7188ed02 | 19316 | return { cu, pd }; |
72bf9492 DJ |
19317 | } |
19318 | ||
abc72ce4 DE |
19319 | /* See if we can figure out if the class lives in a namespace. We do |
19320 | this by looking for a member function; its demangled name will | |
19321 | contain namespace info, if there is any. */ | |
19322 | ||
19323 | static void | |
19324 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
19325 | struct dwarf2_cu *cu) | |
19326 | { | |
19327 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
19328 | what template types look like, because the demangler | |
19329 | frequently doesn't give the same name as the debug info. We | |
19330 | could fix this by only using the demangled name to get the | |
19331 | prefix (but see comment in read_structure_type). */ | |
19332 | ||
19333 | struct partial_die_info *real_pdi; | |
19334 | struct partial_die_info *child_pdi; | |
19335 | ||
19336 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
19337 | we should not do this. We'll prepend the parent's fully qualified | |
19338 | name when we create the partial symbol. */ | |
19339 | ||
19340 | real_pdi = struct_pdi; | |
19341 | while (real_pdi->has_specification) | |
fb816e8b | 19342 | { |
122cf0f2 AB |
19343 | auto res = find_partial_die (real_pdi->spec_offset, |
19344 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
19345 | real_pdi = res.pdi; |
19346 | cu = res.cu; | |
19347 | } | |
abc72ce4 DE |
19348 | |
19349 | if (real_pdi->die_parent != NULL) | |
19350 | return; | |
19351 | ||
19352 | for (child_pdi = struct_pdi->die_child; | |
19353 | child_pdi != NULL; | |
19354 | child_pdi = child_pdi->die_sibling) | |
19355 | { | |
19356 | if (child_pdi->tag == DW_TAG_subprogram | |
19357 | && child_pdi->linkage_name != NULL) | |
19358 | { | |
43816ebc | 19359 | gdb::unique_xmalloc_ptr<char> actual_class_name |
eff93b4d AB |
19360 | (cu->language_defn->class_name_from_physname |
19361 | (child_pdi->linkage_name)); | |
abc72ce4 DE |
19362 | if (actual_class_name != NULL) |
19363 | { | |
5e22e966 | 19364 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
19365 | struct_pdi->raw_name = objfile->intern (actual_class_name.get ()); |
19366 | struct_pdi->canonical_name = 1; | |
abc72ce4 DE |
19367 | } |
19368 | break; | |
19369 | } | |
19370 | } | |
19371 | } | |
19372 | ||
25c11aca TV |
19373 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
19374 | attribute. */ | |
19375 | ||
19376 | static bool | |
19377 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
19378 | { | |
19379 | switch (tag) | |
19380 | { | |
19381 | case DW_TAG_constant: | |
19382 | case DW_TAG_enumerator: | |
19383 | case DW_TAG_formal_parameter: | |
19384 | case DW_TAG_template_value_param: | |
19385 | case DW_TAG_variable: | |
19386 | return true; | |
19387 | } | |
19388 | ||
19389 | return false; | |
19390 | } | |
19391 | ||
52356b79 YQ |
19392 | void |
19393 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 19394 | { |
abc72ce4 DE |
19395 | /* Once we've fixed up a die, there's no point in doing so again. |
19396 | This also avoids a memory leak if we were to call | |
19397 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 19398 | if (fixup_called) |
abc72ce4 DE |
19399 | return; |
19400 | ||
72bf9492 DJ |
19401 | /* If we found a reference attribute and the DIE has no name, try |
19402 | to find a name in the referred to DIE. */ | |
19403 | ||
7d00ffec | 19404 | if (raw_name == NULL && has_specification) |
72bf9492 DJ |
19405 | { |
19406 | struct partial_die_info *spec_die; | |
72bf9492 | 19407 | |
122cf0f2 | 19408 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
19409 | spec_die = res.pdi; |
19410 | cu = res.cu; | |
72bf9492 | 19411 | |
52356b79 | 19412 | spec_die->fixup (cu); |
72bf9492 | 19413 | |
7d00ffec | 19414 | if (spec_die->raw_name) |
72bf9492 | 19415 | { |
7d00ffec TT |
19416 | raw_name = spec_die->raw_name; |
19417 | canonical_name = spec_die->canonical_name; | |
72bf9492 DJ |
19418 | |
19419 | /* Copy DW_AT_external attribute if it is set. */ | |
19420 | if (spec_die->is_external) | |
52356b79 | 19421 | is_external = spec_die->is_external; |
72bf9492 DJ |
19422 | } |
19423 | } | |
19424 | ||
25c11aca TV |
19425 | if (!has_const_value && has_specification |
19426 | && can_have_DW_AT_const_value_p (tag)) | |
19427 | { | |
19428 | struct partial_die_info *spec_die; | |
19429 | ||
19430 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
19431 | spec_die = res.pdi; | |
19432 | cu = res.cu; | |
19433 | ||
19434 | spec_die->fixup (cu); | |
19435 | ||
19436 | if (spec_die->has_const_value) | |
19437 | { | |
19438 | /* Copy DW_AT_const_value attribute if it is set. */ | |
19439 | has_const_value = spec_die->has_const_value; | |
19440 | } | |
19441 | } | |
19442 | ||
72bf9492 | 19443 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 19444 | |
7d00ffec TT |
19445 | if (raw_name == NULL && tag == DW_TAG_namespace) |
19446 | { | |
19447 | raw_name = CP_ANONYMOUS_NAMESPACE_STR; | |
19448 | canonical_name = 1; | |
19449 | } | |
72bf9492 | 19450 | |
abc72ce4 DE |
19451 | /* If there is no parent die to provide a namespace, and there are |
19452 | children, see if we can determine the namespace from their linkage | |
122d1940 | 19453 | name. */ |
abc72ce4 | 19454 | if (cu->language == language_cplus |
5e22e966 | 19455 | && !cu->per_objfile->per_bfd->types.empty () |
52356b79 YQ |
19456 | && die_parent == NULL |
19457 | && has_children | |
19458 | && (tag == DW_TAG_class_type | |
19459 | || tag == DW_TAG_structure_type | |
19460 | || tag == DW_TAG_union_type)) | |
19461 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 19462 | |
53832f31 TT |
19463 | /* GCC might emit a nameless struct or union that has a linkage |
19464 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
7d00ffec | 19465 | if (raw_name == NULL |
52356b79 YQ |
19466 | && (tag == DW_TAG_class_type |
19467 | || tag == DW_TAG_interface_type | |
19468 | || tag == DW_TAG_structure_type | |
19469 | || tag == DW_TAG_union_type) | |
19470 | && linkage_name != NULL) | |
53832f31 | 19471 | { |
43816ebc TT |
19472 | gdb::unique_xmalloc_ptr<char> demangled |
19473 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
19474 | if (demangled != nullptr) | |
53832f31 | 19475 | { |
96408a79 SA |
19476 | const char *base; |
19477 | ||
19478 | /* Strip any leading namespaces/classes, keep only the base name. | |
19479 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
19480 | base = strrchr (demangled.get (), ':'); |
19481 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
19482 | base++; |
19483 | else | |
43816ebc | 19484 | base = demangled.get (); |
96408a79 | 19485 | |
5e22e966 | 19486 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
19487 | raw_name = objfile->intern (base); |
19488 | canonical_name = 1; | |
53832f31 TT |
19489 | } |
19490 | } | |
19491 | ||
52356b79 | 19492 | fixup_called = 1; |
72bf9492 DJ |
19493 | } |
19494 | ||
d0ce17d8 CT |
19495 | /* Read the .debug_loclists or .debug_rnglists header (they are the same format) |
19496 | contents from the given SECTION in the HEADER. */ | |
41144253 | 19497 | static void |
d0ce17d8 CT |
19498 | read_loclists_rnglists_header (struct loclists_rnglists_header *header, |
19499 | struct dwarf2_section_info *section) | |
41144253 | 19500 | { |
19501 | unsigned int bytes_read; | |
19502 | bfd *abfd = section->get_bfd_owner (); | |
19503 | const gdb_byte *info_ptr = section->buffer; | |
19504 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
19505 | info_ptr += bytes_read; | |
19506 | header->version = read_2_bytes (abfd, info_ptr); | |
19507 | info_ptr += 2; | |
19508 | header->addr_size = read_1_byte (abfd, info_ptr); | |
19509 | info_ptr += 1; | |
19510 | header->segment_collector_size = read_1_byte (abfd, info_ptr); | |
19511 | info_ptr += 1; | |
19512 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); | |
19513 | } | |
19514 | ||
19515 | /* Return the DW_AT_loclists_base value for the CU. */ | |
19516 | static ULONGEST | |
19517 | lookup_loclist_base (struct dwarf2_cu *cu) | |
19518 | { | |
19519 | /* For the .dwo unit, the loclist_base points to the first offset following | |
19520 | the header. The header consists of the following entities- | |
19521 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
19522 | bit format) | |
19523 | 2. version (2 bytes) | |
19524 | 3. address size (1 byte) | |
19525 | 4. segment selector size (1 byte) | |
19526 | 5. offset entry count (4 bytes) | |
19527 | These sizes are derived as per the DWARFv5 standard. */ | |
19528 | if (cu->dwo_unit != nullptr) | |
19529 | { | |
19530 | if (cu->header.initial_length_size == 4) | |
19531 | return LOCLIST_HEADER_SIZE32; | |
19532 | return LOCLIST_HEADER_SIZE64; | |
19533 | } | |
19534 | return cu->loclist_base; | |
19535 | } | |
19536 | ||
19537 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
19538 | array of offsets in the .debug_loclists section. */ | |
19539 | static CORE_ADDR | |
19540 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) | |
19541 | { | |
976ca316 SM |
19542 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19543 | struct objfile *objfile = per_objfile->objfile; | |
41144253 | 19544 | bfd *abfd = objfile->obfd; |
19545 | ULONGEST loclist_base = lookup_loclist_base (cu); | |
19546 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); | |
19547 | ||
19548 | section->read (objfile); | |
19549 | if (section->buffer == NULL) | |
19550 | complaint (_("DW_FORM_loclistx used without .debug_loclists " | |
19551 | "section [in module %s]"), objfile_name (objfile)); | |
d0ce17d8 CT |
19552 | struct loclists_rnglists_header header; |
19553 | read_loclists_rnglists_header (&header, section); | |
41144253 | 19554 | if (loclist_index >= header.offset_entry_count) |
19555 | complaint (_("DW_FORM_loclistx pointing outside of " | |
19556 | ".debug_loclists offset array [in module %s]"), | |
19557 | objfile_name (objfile)); | |
19558 | if (loclist_base + loclist_index * cu->header.offset_size | |
19559 | >= section->size) | |
19560 | complaint (_("DW_FORM_loclistx pointing outside of " | |
19561 | ".debug_loclists section [in module %s]"), | |
19562 | objfile_name (objfile)); | |
19563 | const gdb_byte *info_ptr | |
19564 | = section->buffer + loclist_base + loclist_index * cu->header.offset_size; | |
19565 | ||
19566 | if (cu->header.offset_size == 4) | |
19567 | return bfd_get_32 (abfd, info_ptr) + loclist_base; | |
19568 | else | |
19569 | return bfd_get_64 (abfd, info_ptr) + loclist_base; | |
19570 | } | |
19571 | ||
d0ce17d8 CT |
19572 | /* Given a DW_FORM_rnglistx value RNGLIST_INDEX, fetch the offset from the |
19573 | array of offsets in the .debug_rnglists section. */ | |
19574 | static CORE_ADDR | |
19575 | read_rnglist_index (struct dwarf2_cu *cu, ULONGEST rnglist_index, | |
19576 | dwarf_tag tag) | |
19577 | { | |
19578 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
19579 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19580 | bfd *abfd = objfile->obfd; | |
19581 | ULONGEST rnglist_header_size = | |
19582 | (cu->header.initial_length_size == 4 ? RNGLIST_HEADER_SIZE32 | |
19583 | : RNGLIST_HEADER_SIZE64); | |
19584 | ULONGEST rnglist_base = | |
19585 | (cu->dwo_unit != nullptr) ? rnglist_header_size : cu->ranges_base; | |
19586 | ULONGEST start_offset = | |
19587 | rnglist_base + rnglist_index * cu->header.offset_size; | |
19588 | ||
19589 | /* Get rnglists section. */ | |
19590 | struct dwarf2_section_info *section = cu_debug_rnglists_section (cu, tag); | |
19591 | ||
19592 | /* Read the rnglists section content. */ | |
19593 | section->read (objfile); | |
19594 | if (section->buffer == nullptr) | |
19595 | error (_("DW_FORM_rnglistx used without .debug_rnglists section " | |
19596 | "[in module %s]"), | |
19597 | objfile_name (objfile)); | |
19598 | ||
19599 | /* Verify the rnglist index is valid. */ | |
19600 | struct loclists_rnglists_header header; | |
19601 | read_loclists_rnglists_header (&header, section); | |
19602 | if (rnglist_index >= header.offset_entry_count) | |
19603 | error (_("DW_FORM_rnglistx index pointing outside of " | |
19604 | ".debug_rnglists offset array [in module %s]"), | |
19605 | objfile_name (objfile)); | |
19606 | ||
19607 | /* Validate that the offset is within the section's range. */ | |
19608 | if (start_offset >= section->size) | |
19609 | error (_("DW_FORM_rnglistx pointing outside of " | |
19610 | ".debug_rnglists section [in module %s]"), | |
19611 | objfile_name (objfile)); | |
19612 | ||
19613 | /* Validate that reading won't go beyond the end of the section. */ | |
19614 | if (start_offset + cu->header.offset_size > rnglist_base + section->size) | |
19615 | error (_("Reading DW_FORM_rnglistx index beyond end of" | |
19616 | ".debug_rnglists section [in module %s]"), | |
19617 | objfile_name (objfile)); | |
19618 | ||
19619 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
19620 | ||
19621 | if (cu->header.offset_size == 4) | |
19622 | return read_4_bytes (abfd, info_ptr) + rnglist_base; | |
19623 | else | |
19624 | return read_8_bytes (abfd, info_ptr) + rnglist_base; | |
19625 | } | |
19626 | ||
18a8505e AT |
19627 | /* Process the attributes that had to be skipped in the first round. These |
19628 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
19629 | They could not have been processed in the first round, because at the time | |
19630 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
19631 | static void |
19632 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 19633 | struct attribute *attr, dwarf_tag tag) |
18a8505e AT |
19634 | { |
19635 | struct dwarf2_cu *cu = reader->cu; | |
19636 | switch (attr->form) | |
19637 | { | |
19638 | case DW_FORM_addrx: | |
19639 | case DW_FORM_GNU_addr_index: | |
36d378cf TT |
19640 | attr->set_address (read_addr_index (cu, |
19641 | attr->as_unsigned_reprocess ())); | |
18a8505e | 19642 | break; |
41144253 | 19643 | case DW_FORM_loclistx: |
19644 | DW_UNSND (attr) = read_loclist_index (cu, DW_UNSND (attr)); | |
19645 | break; | |
d0ce17d8 CT |
19646 | case DW_FORM_rnglistx: |
19647 | DW_UNSND (attr) = read_rnglist_index (cu, DW_UNSND (attr), tag); | |
19648 | break; | |
18a8505e AT |
19649 | case DW_FORM_strx: |
19650 | case DW_FORM_strx1: | |
19651 | case DW_FORM_strx2: | |
19652 | case DW_FORM_strx3: | |
19653 | case DW_FORM_strx4: | |
19654 | case DW_FORM_GNU_str_index: | |
19655 | { | |
fe56917a | 19656 | unsigned int str_index = attr->as_unsigned_reprocess (); |
c6481205 | 19657 | gdb_assert (!attr->canonical_string_p ()); |
18a8505e | 19658 | if (reader->dwo_file != NULL) |
c6481205 TT |
19659 | attr->set_string_noncanonical (read_dwo_str_index (reader, |
19660 | str_index)); | |
18a8505e | 19661 | else |
c6481205 TT |
19662 | attr->set_string_noncanonical (read_stub_str_index (cu, |
19663 | str_index)); | |
18a8505e AT |
19664 | break; |
19665 | } | |
19666 | default: | |
19667 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
19668 | } | |
19669 | } | |
19670 | ||
a8329558 | 19671 | /* Read an attribute value described by an attribute form. */ |
c906108c | 19672 | |
d521ce57 | 19673 | static const gdb_byte * |
dee91e82 DE |
19674 | read_attribute_value (const struct die_reader_specs *reader, |
19675 | struct attribute *attr, unsigned form, | |
7a5f294d | 19676 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 19677 | { |
dee91e82 | 19678 | struct dwarf2_cu *cu = reader->cu; |
976ca316 SM |
19679 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19680 | struct objfile *objfile = per_objfile->objfile; | |
dee91e82 | 19681 | bfd *abfd = reader->abfd; |
e7c27a73 | 19682 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19683 | unsigned int bytes_read; |
19684 | struct dwarf_block *blk; | |
19685 | ||
aead7601 | 19686 | attr->form = (enum dwarf_form) form; |
a8329558 | 19687 | switch (form) |
c906108c | 19688 | { |
c906108c | 19689 | case DW_FORM_ref_addr: |
ae411497 | 19690 | if (cu->header.version == 2) |
414ad644 TT |
19691 | attr->set_unsigned (cu->header.read_address (abfd, info_ptr, |
19692 | &bytes_read)); | |
ae411497 | 19693 | else |
414ad644 TT |
19694 | attr->set_unsigned (cu->header.read_offset (abfd, info_ptr, |
19695 | &bytes_read)); | |
ae411497 TT |
19696 | info_ptr += bytes_read; |
19697 | break; | |
36586728 | 19698 | case DW_FORM_GNU_ref_alt: |
414ad644 TT |
19699 | attr->set_unsigned (cu->header.read_offset (abfd, info_ptr, |
19700 | &bytes_read)); | |
36586728 TT |
19701 | info_ptr += bytes_read; |
19702 | break; | |
ae411497 | 19703 | case DW_FORM_addr: |
08feed99 TT |
19704 | { |
19705 | struct gdbarch *gdbarch = objfile->arch (); | |
36d378cf TT |
19706 | CORE_ADDR addr = cu->header.read_address (abfd, info_ptr, &bytes_read); |
19707 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr); | |
19708 | attr->set_address (addr); | |
08feed99 TT |
19709 | info_ptr += bytes_read; |
19710 | } | |
c906108c SS |
19711 | break; |
19712 | case DW_FORM_block2: | |
7b5a2f43 | 19713 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19714 | blk->size = read_2_bytes (abfd, info_ptr); |
19715 | info_ptr += 2; | |
19716 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19717 | info_ptr += blk->size; | |
9d2246fc | 19718 | attr->set_block (blk); |
c906108c SS |
19719 | break; |
19720 | case DW_FORM_block4: | |
7b5a2f43 | 19721 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19722 | blk->size = read_4_bytes (abfd, info_ptr); |
19723 | info_ptr += 4; | |
19724 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19725 | info_ptr += blk->size; | |
9d2246fc | 19726 | attr->set_block (blk); |
c906108c SS |
19727 | break; |
19728 | case DW_FORM_data2: | |
414ad644 | 19729 | attr->set_unsigned (read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19730 | info_ptr += 2; |
19731 | break; | |
19732 | case DW_FORM_data4: | |
414ad644 | 19733 | attr->set_unsigned (read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19734 | info_ptr += 4; |
19735 | break; | |
19736 | case DW_FORM_data8: | |
414ad644 | 19737 | attr->set_unsigned (read_8_bytes (abfd, info_ptr)); |
c906108c SS |
19738 | info_ptr += 8; |
19739 | break; | |
0224619f JK |
19740 | case DW_FORM_data16: |
19741 | blk = dwarf_alloc_block (cu); | |
19742 | blk->size = 16; | |
19743 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19744 | info_ptr += 16; | |
9d2246fc | 19745 | attr->set_block (blk); |
0224619f | 19746 | break; |
2dc7f7b3 | 19747 | case DW_FORM_sec_offset: |
414ad644 TT |
19748 | attr->set_unsigned (cu->header.read_offset (abfd, info_ptr, |
19749 | &bytes_read)); | |
2dc7f7b3 TT |
19750 | info_ptr += bytes_read; |
19751 | break; | |
41144253 | 19752 | case DW_FORM_loclistx: |
19753 | { | |
7a5f294d TT |
19754 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
19755 | &bytes_read)); | |
19756 | info_ptr += bytes_read; | |
41144253 | 19757 | } |
19758 | break; | |
c906108c | 19759 | case DW_FORM_string: |
c6481205 TT |
19760 | attr->set_string_noncanonical (read_direct_string (abfd, info_ptr, |
19761 | &bytes_read)); | |
c906108c SS |
19762 | info_ptr += bytes_read; |
19763 | break; | |
4bdf3d34 | 19764 | case DW_FORM_strp: |
36586728 TT |
19765 | if (!cu->per_cu->is_dwz) |
19766 | { | |
c6481205 TT |
19767 | attr->set_string_noncanonical |
19768 | (read_indirect_string (per_objfile, | |
19769 | abfd, info_ptr, cu_header, | |
19770 | &bytes_read)); | |
36586728 TT |
19771 | info_ptr += bytes_read; |
19772 | break; | |
19773 | } | |
19774 | /* FALLTHROUGH */ | |
43988095 JK |
19775 | case DW_FORM_line_strp: |
19776 | if (!cu->per_cu->is_dwz) | |
19777 | { | |
c6481205 TT |
19778 | attr->set_string_noncanonical |
19779 | (per_objfile->read_line_string (info_ptr, cu_header, | |
19780 | &bytes_read)); | |
43988095 JK |
19781 | info_ptr += bytes_read; |
19782 | break; | |
19783 | } | |
19784 | /* FALLTHROUGH */ | |
36586728 TT |
19785 | case DW_FORM_GNU_strp_alt: |
19786 | { | |
976ca316 | 19787 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
8266302d TT |
19788 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
19789 | &bytes_read); | |
36586728 | 19790 | |
c6481205 TT |
19791 | attr->set_string_noncanonical |
19792 | (dwz->read_string (objfile, str_offset)); | |
36586728 TT |
19793 | info_ptr += bytes_read; |
19794 | } | |
4bdf3d34 | 19795 | break; |
2dc7f7b3 | 19796 | case DW_FORM_exprloc: |
c906108c | 19797 | case DW_FORM_block: |
7b5a2f43 | 19798 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19799 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19800 | info_ptr += bytes_read; | |
19801 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19802 | info_ptr += blk->size; | |
9d2246fc | 19803 | attr->set_block (blk); |
c906108c SS |
19804 | break; |
19805 | case DW_FORM_block1: | |
7b5a2f43 | 19806 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19807 | blk->size = read_1_byte (abfd, info_ptr); |
19808 | info_ptr += 1; | |
19809 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19810 | info_ptr += blk->size; | |
9d2246fc | 19811 | attr->set_block (blk); |
c906108c SS |
19812 | break; |
19813 | case DW_FORM_data1: | |
c906108c | 19814 | case DW_FORM_flag: |
414ad644 | 19815 | attr->set_unsigned (read_1_byte (abfd, info_ptr)); |
c906108c SS |
19816 | info_ptr += 1; |
19817 | break; | |
2dc7f7b3 | 19818 | case DW_FORM_flag_present: |
414ad644 | 19819 | attr->set_unsigned (1); |
2dc7f7b3 | 19820 | break; |
c906108c | 19821 | case DW_FORM_sdata: |
1bc397c5 | 19822 | attr->set_signed (read_signed_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19823 | info_ptr += bytes_read; |
19824 | break; | |
18a8505e | 19825 | case DW_FORM_rnglistx: |
7a5f294d TT |
19826 | { |
19827 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, | |
19828 | &bytes_read)); | |
19829 | info_ptr += bytes_read; | |
19830 | } | |
19831 | break; | |
d0ce17d8 | 19832 | case DW_FORM_udata: |
414ad644 | 19833 | attr->set_unsigned (read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19834 | info_ptr += bytes_read; |
19835 | break; | |
19836 | case DW_FORM_ref1: | |
414ad644 TT |
19837 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
19838 | + read_1_byte (abfd, info_ptr))); | |
c906108c SS |
19839 | info_ptr += 1; |
19840 | break; | |
19841 | case DW_FORM_ref2: | |
414ad644 TT |
19842 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
19843 | + read_2_bytes (abfd, info_ptr))); | |
c906108c SS |
19844 | info_ptr += 2; |
19845 | break; | |
19846 | case DW_FORM_ref4: | |
414ad644 TT |
19847 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
19848 | + read_4_bytes (abfd, info_ptr))); | |
c906108c SS |
19849 | info_ptr += 4; |
19850 | break; | |
613e1657 | 19851 | case DW_FORM_ref8: |
414ad644 TT |
19852 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
19853 | + read_8_bytes (abfd, info_ptr))); | |
613e1657 KB |
19854 | info_ptr += 8; |
19855 | break; | |
55f1336d | 19856 | case DW_FORM_ref_sig8: |
630ed6b9 | 19857 | attr->set_signature (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
19858 | info_ptr += 8; |
19859 | break; | |
c906108c | 19860 | case DW_FORM_ref_udata: |
414ad644 TT |
19861 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
19862 | + read_unsigned_leb128 (abfd, info_ptr, | |
19863 | &bytes_read))); | |
c906108c SS |
19864 | info_ptr += bytes_read; |
19865 | break; | |
c906108c | 19866 | case DW_FORM_indirect: |
a8329558 KW |
19867 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19868 | info_ptr += bytes_read; | |
43988095 JK |
19869 | if (form == DW_FORM_implicit_const) |
19870 | { | |
19871 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19872 | info_ptr += bytes_read; | |
19873 | } | |
19874 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
7a5f294d | 19875 | info_ptr); |
43988095 JK |
19876 | break; |
19877 | case DW_FORM_implicit_const: | |
1bc397c5 | 19878 | attr->set_signed (implicit_const); |
a8329558 | 19879 | break; |
336d760d | 19880 | case DW_FORM_addrx: |
3019eac3 | 19881 | case DW_FORM_GNU_addr_index: |
fe56917a TT |
19882 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
19883 | &bytes_read)); | |
3019eac3 DE |
19884 | info_ptr += bytes_read; |
19885 | break; | |
cf532bd1 | 19886 | case DW_FORM_strx: |
15f18d14 AT |
19887 | case DW_FORM_strx1: |
19888 | case DW_FORM_strx2: | |
19889 | case DW_FORM_strx3: | |
19890 | case DW_FORM_strx4: | |
3019eac3 | 19891 | case DW_FORM_GNU_str_index: |
3019eac3 | 19892 | { |
15f18d14 AT |
19893 | ULONGEST str_index; |
19894 | if (form == DW_FORM_strx1) | |
19895 | { | |
19896 | str_index = read_1_byte (abfd, info_ptr); | |
19897 | info_ptr += 1; | |
19898 | } | |
19899 | else if (form == DW_FORM_strx2) | |
19900 | { | |
19901 | str_index = read_2_bytes (abfd, info_ptr); | |
19902 | info_ptr += 2; | |
19903 | } | |
19904 | else if (form == DW_FORM_strx3) | |
19905 | { | |
19906 | str_index = read_3_bytes (abfd, info_ptr); | |
19907 | info_ptr += 3; | |
19908 | } | |
19909 | else if (form == DW_FORM_strx4) | |
19910 | { | |
19911 | str_index = read_4_bytes (abfd, info_ptr); | |
19912 | info_ptr += 4; | |
19913 | } | |
19914 | else | |
19915 | { | |
19916 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19917 | info_ptr += bytes_read; | |
19918 | } | |
fe56917a | 19919 | attr->set_unsigned_reprocess (str_index); |
7a5f294d | 19920 | } |
3019eac3 | 19921 | break; |
c906108c | 19922 | default: |
8a3fe4f8 | 19923 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19924 | dwarf_form_name (form), |
19925 | bfd_get_filename (abfd)); | |
c906108c | 19926 | } |
28e94949 | 19927 | |
36586728 | 19928 | /* Super hack. */ |
cd6c91b4 | 19929 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
19930 | attr->form = DW_FORM_GNU_ref_alt; |
19931 | ||
28e94949 JB |
19932 | /* We have seen instances where the compiler tried to emit a byte |
19933 | size attribute of -1 which ended up being encoded as an unsigned | |
19934 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19935 | an object of this size seems pretty unlikely so we can relatively | |
19936 | safely treat these cases as if the size attribute was invalid and | |
19937 | treat them as zero by default. */ | |
19938 | if (attr->name == DW_AT_byte_size | |
19939 | && form == DW_FORM_data4 | |
19940 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19941 | { |
19942 | complaint | |
b98664d3 | 19943 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19944 | hex_string (DW_UNSND (attr))); |
414ad644 | 19945 | attr->set_unsigned (0); |
01c66ae6 | 19946 | } |
28e94949 | 19947 | |
c906108c SS |
19948 | return info_ptr; |
19949 | } | |
19950 | ||
a8329558 KW |
19951 | /* Read an attribute described by an abbreviated attribute. */ |
19952 | ||
d521ce57 | 19953 | static const gdb_byte * |
dee91e82 DE |
19954 | read_attribute (const struct die_reader_specs *reader, |
19955 | struct attribute *attr, struct attr_abbrev *abbrev, | |
7a5f294d | 19956 | const gdb_byte *info_ptr) |
a8329558 KW |
19957 | { |
19958 | attr->name = abbrev->name; | |
c6481205 | 19959 | attr->string_is_canonical = 0; |
fe56917a | 19960 | attr->requires_reprocessing = 0; |
43988095 | 19961 | return read_attribute_value (reader, attr, abbrev->form, |
7a5f294d | 19962 | abbrev->implicit_const, info_ptr); |
a8329558 KW |
19963 | } |
19964 | ||
43988095 JK |
19965 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
19966 | ||
19967 | static const char * | |
976ca316 | 19968 | read_indirect_string_at_offset (dwarf2_per_objfile *per_objfile, |
4f44ae6c | 19969 | LONGEST str_offset) |
43988095 | 19970 | { |
976ca316 SM |
19971 | return per_objfile->per_bfd->str.read_string (per_objfile->objfile, |
19972 | str_offset, "DW_FORM_strp"); | |
c906108c SS |
19973 | } |
19974 | ||
43988095 JK |
19975 | /* Return pointer to string at .debug_str offset as read from BUF. |
19976 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19977 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19978 | ||
d521ce57 | 19979 | static const char * |
976ca316 | 19980 | read_indirect_string (dwarf2_per_objfile *per_objfile, bfd *abfd, |
ed2dc618 | 19981 | const gdb_byte *buf, |
cf2c3c16 TT |
19982 | const struct comp_unit_head *cu_header, |
19983 | unsigned int *bytes_read_ptr) | |
19984 | { | |
8266302d | 19985 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 19986 | |
976ca316 | 19987 | return read_indirect_string_at_offset (per_objfile, str_offset); |
cf2c3c16 TT |
19988 | } |
19989 | ||
86c0bb4c | 19990 | /* See read.h. */ |
43988095 | 19991 | |
86c0bb4c TT |
19992 | const char * |
19993 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
5989a64e SM |
19994 | const struct comp_unit_head *cu_header, |
19995 | unsigned int *bytes_read_ptr) | |
43988095 | 19996 | { |
86c0bb4c | 19997 | bfd *abfd = objfile->obfd; |
8266302d | 19998 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 19999 | |
5989a64e | 20000 | return per_bfd->line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
20001 | } |
20002 | ||
3019eac3 | 20003 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 20004 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
20005 | ADDR_SIZE is the size of addresses from the CU header. */ |
20006 | ||
20007 | static CORE_ADDR | |
976ca316 SM |
20008 | read_addr_index_1 (dwarf2_per_objfile *per_objfile, unsigned int addr_index, |
20009 | gdb::optional<ULONGEST> addr_base, int addr_size) | |
3019eac3 | 20010 | { |
976ca316 | 20011 | struct objfile *objfile = per_objfile->objfile; |
3019eac3 DE |
20012 | bfd *abfd = objfile->obfd; |
20013 | const gdb_byte *info_ptr; | |
18a8505e | 20014 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 20015 | |
976ca316 SM |
20016 | per_objfile->per_bfd->addr.read (objfile); |
20017 | if (per_objfile->per_bfd->addr.buffer == NULL) | |
3019eac3 | 20018 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), |
4262abfb | 20019 | objfile_name (objfile)); |
18a8505e | 20020 | if (addr_base_or_zero + addr_index * addr_size |
976ca316 | 20021 | >= per_objfile->per_bfd->addr.size) |
3019eac3 DE |
20022 | error (_("DW_FORM_addr_index pointing outside of " |
20023 | ".debug_addr section [in module %s]"), | |
4262abfb | 20024 | objfile_name (objfile)); |
976ca316 SM |
20025 | info_ptr = (per_objfile->per_bfd->addr.buffer + addr_base_or_zero |
20026 | + addr_index * addr_size); | |
3019eac3 DE |
20027 | if (addr_size == 4) |
20028 | return bfd_get_32 (abfd, info_ptr); | |
20029 | else | |
20030 | return bfd_get_64 (abfd, info_ptr); | |
20031 | } | |
20032 | ||
20033 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
20034 | ||
20035 | static CORE_ADDR | |
20036 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
20037 | { | |
5e22e966 | 20038 | return read_addr_index_1 (cu->per_objfile, addr_index, |
518817b3 | 20039 | cu->addr_base, cu->header.addr_size); |
3019eac3 DE |
20040 | } |
20041 | ||
20042 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
20043 | ||
20044 | static CORE_ADDR | |
d521ce57 | 20045 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
20046 | unsigned int *bytes_read) |
20047 | { | |
5e22e966 | 20048 | bfd *abfd = cu->per_objfile->objfile->obfd; |
3019eac3 DE |
20049 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
20050 | ||
20051 | return read_addr_index (cu, addr_index); | |
20052 | } | |
20053 | ||
450a1bfc | 20054 | /* See read.h. */ |
3019eac3 DE |
20055 | |
20056 | CORE_ADDR | |
82ca3f51 | 20057 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, |
976ca316 | 20058 | dwarf2_per_objfile *per_objfile, |
82ca3f51 | 20059 | unsigned int addr_index) |
3019eac3 | 20060 | { |
976ca316 | 20061 | struct dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
18a8505e | 20062 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
20063 | int addr_size; |
20064 | ||
3019eac3 DE |
20065 | /* We need addr_base and addr_size. |
20066 | If we don't have PER_CU->cu, we have to get it. | |
20067 | Nasty, but the alternative is storing the needed info in PER_CU, | |
20068 | which at this point doesn't seem justified: it's not clear how frequently | |
20069 | it would get used and it would increase the size of every PER_CU. | |
20070 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
20071 | so we're not in uncharted territory here. | |
20072 | Alas we need to be a bit more complicated as addr_base is contained | |
20073 | in the DIE. | |
20074 | ||
20075 | We don't need to read the entire CU(/TU). | |
20076 | We just need the header and top level die. | |
a1b64ce1 | 20077 | |
3019eac3 | 20078 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 20079 | For now we skip this optimization. */ |
3019eac3 DE |
20080 | |
20081 | if (cu != NULL) | |
20082 | { | |
20083 | addr_base = cu->addr_base; | |
20084 | addr_size = cu->header.addr_size; | |
20085 | } | |
20086 | else | |
20087 | { | |
976ca316 | 20088 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
20089 | addr_base = reader.cu->addr_base; |
20090 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
20091 | } |
20092 | ||
976ca316 | 20093 | return read_addr_index_1 (per_objfile, addr_index, addr_base, addr_size); |
3019eac3 DE |
20094 | } |
20095 | ||
18a8505e AT |
20096 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
20097 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
20098 | DWO file. */ | |
3019eac3 | 20099 | |
d521ce57 | 20100 | static const char * |
18a8505e AT |
20101 | read_str_index (struct dwarf2_cu *cu, |
20102 | struct dwarf2_section_info *str_section, | |
20103 | struct dwarf2_section_info *str_offsets_section, | |
20104 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 20105 | { |
976ca316 SM |
20106 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20107 | struct objfile *objfile = per_objfile->objfile; | |
c5164cbc | 20108 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 20109 | bfd *abfd = objfile->obfd; |
d521ce57 | 20110 | const gdb_byte *info_ptr; |
3019eac3 | 20111 | ULONGEST str_offset; |
cf532bd1 | 20112 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 20113 | |
96b79293 TT |
20114 | str_section->read (objfile); |
20115 | str_offsets_section->read (objfile); | |
73869dc2 | 20116 | if (str_section->buffer == NULL) |
18a8505e | 20117 | error (_("%s used without %s section" |
9d8780f0 | 20118 | " in CU at offset %s [in module %s]"), |
96b79293 | 20119 | form_name, str_section->get_name (), |
18a8505e | 20120 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20121 | if (str_offsets_section->buffer == NULL) |
18a8505e | 20122 | error (_("%s used without %s section" |
9d8780f0 | 20123 | " in CU at offset %s [in module %s]"), |
96b79293 | 20124 | form_name, str_section->get_name (), |
18a8505e | 20125 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20126 | info_ptr = (str_offsets_section->buffer |
18a8505e | 20127 | + str_offsets_base |
3019eac3 DE |
20128 | + str_index * cu->header.offset_size); |
20129 | if (cu->header.offset_size == 4) | |
20130 | str_offset = bfd_get_32 (abfd, info_ptr); | |
20131 | else | |
20132 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 20133 | if (str_offset >= str_section->size) |
57d63ce2 | 20134 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
20135 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
20136 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20137 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
20138 | } |
20139 | ||
18a8505e AT |
20140 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
20141 | ||
20142 | static const char * | |
20143 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
20144 | { | |
20145 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
20146 | ? reader->cu->header.addr_size : 0; | |
20147 | return read_str_index (reader->cu, | |
20148 | &reader->dwo_file->sections.str, | |
20149 | &reader->dwo_file->sections.str_offsets, | |
20150 | str_offsets_base, str_index); | |
20151 | } | |
20152 | ||
20153 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
20154 | ||
20155 | static const char * | |
20156 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
20157 | { | |
5e22e966 | 20158 | struct objfile *objfile = cu->per_objfile->objfile; |
18a8505e AT |
20159 | const char *objf_name = objfile_name (objfile); |
20160 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
20161 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
20162 | ||
20163 | if (!cu->str_offsets_base.has_value ()) | |
20164 | error (_("%s used in Fission stub without %s" | |
20165 | " in CU at offset 0x%lx [in module %s]"), | |
20166 | form_name, str_offsets_attr_name, | |
20167 | (long) cu->header.offset_size, objf_name); | |
20168 | ||
20169 | return read_str_index (cu, | |
5e22e966 SM |
20170 | &cu->per_objfile->per_bfd->str, |
20171 | &cu->per_objfile->per_bfd->str_offsets, | |
18a8505e AT |
20172 | *cu->str_offsets_base, str_index); |
20173 | } | |
20174 | ||
3019eac3 DE |
20175 | /* Return the length of an LEB128 number in BUF. */ |
20176 | ||
20177 | static int | |
20178 | leb128_size (const gdb_byte *buf) | |
20179 | { | |
20180 | const gdb_byte *begin = buf; | |
20181 | gdb_byte byte; | |
20182 | ||
20183 | while (1) | |
20184 | { | |
20185 | byte = *buf++; | |
20186 | if ((byte & 128) == 0) | |
20187 | return buf - begin; | |
20188 | } | |
20189 | } | |
20190 | ||
c906108c | 20191 | static void |
e142c38c | 20192 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
20193 | { |
20194 | switch (lang) | |
20195 | { | |
20196 | case DW_LANG_C89: | |
76bee0cc | 20197 | case DW_LANG_C99: |
0cfd832f | 20198 | case DW_LANG_C11: |
c906108c | 20199 | case DW_LANG_C: |
d1be3247 | 20200 | case DW_LANG_UPC: |
e142c38c | 20201 | cu->language = language_c; |
c906108c | 20202 | break; |
9c37b5ae | 20203 | case DW_LANG_Java: |
c906108c | 20204 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
20205 | case DW_LANG_C_plus_plus_11: |
20206 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 20207 | cu->language = language_cplus; |
c906108c | 20208 | break; |
6aecb9c2 JB |
20209 | case DW_LANG_D: |
20210 | cu->language = language_d; | |
20211 | break; | |
c906108c SS |
20212 | case DW_LANG_Fortran77: |
20213 | case DW_LANG_Fortran90: | |
b21b22e0 | 20214 | case DW_LANG_Fortran95: |
f7de9aab MW |
20215 | case DW_LANG_Fortran03: |
20216 | case DW_LANG_Fortran08: | |
e142c38c | 20217 | cu->language = language_fortran; |
c906108c | 20218 | break; |
a766d390 DE |
20219 | case DW_LANG_Go: |
20220 | cu->language = language_go; | |
20221 | break; | |
c906108c | 20222 | case DW_LANG_Mips_Assembler: |
e142c38c | 20223 | cu->language = language_asm; |
c906108c SS |
20224 | break; |
20225 | case DW_LANG_Ada83: | |
8aaf0b47 | 20226 | case DW_LANG_Ada95: |
bc5f45f8 JB |
20227 | cu->language = language_ada; |
20228 | break; | |
72019c9c GM |
20229 | case DW_LANG_Modula2: |
20230 | cu->language = language_m2; | |
20231 | break; | |
fe8e67fd PM |
20232 | case DW_LANG_Pascal83: |
20233 | cu->language = language_pascal; | |
20234 | break; | |
22566fbd DJ |
20235 | case DW_LANG_ObjC: |
20236 | cu->language = language_objc; | |
20237 | break; | |
c44af4eb TT |
20238 | case DW_LANG_Rust: |
20239 | case DW_LANG_Rust_old: | |
20240 | cu->language = language_rust; | |
20241 | break; | |
c906108c SS |
20242 | case DW_LANG_Cobol74: |
20243 | case DW_LANG_Cobol85: | |
c906108c | 20244 | default: |
e142c38c | 20245 | cu->language = language_minimal; |
c906108c SS |
20246 | break; |
20247 | } | |
e142c38c | 20248 | cu->language_defn = language_def (cu->language); |
c906108c SS |
20249 | } |
20250 | ||
20251 | /* Return the named attribute or NULL if not there. */ | |
20252 | ||
20253 | static struct attribute * | |
e142c38c | 20254 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 20255 | { |
a48e046c | 20256 | for (;;) |
c906108c | 20257 | { |
a48e046c TT |
20258 | unsigned int i; |
20259 | struct attribute *spec = NULL; | |
20260 | ||
20261 | for (i = 0; i < die->num_attrs; ++i) | |
20262 | { | |
20263 | if (die->attrs[i].name == name) | |
20264 | return &die->attrs[i]; | |
20265 | if (die->attrs[i].name == DW_AT_specification | |
20266 | || die->attrs[i].name == DW_AT_abstract_origin) | |
20267 | spec = &die->attrs[i]; | |
20268 | } | |
20269 | ||
20270 | if (!spec) | |
20271 | break; | |
c906108c | 20272 | |
f2f0e013 | 20273 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 20274 | } |
c5aa993b | 20275 | |
c906108c SS |
20276 | return NULL; |
20277 | } | |
20278 | ||
7d45c7c3 KB |
20279 | /* Return the string associated with a string-typed attribute, or NULL if it |
20280 | is either not found or is of an incorrect type. */ | |
20281 | ||
20282 | static const char * | |
20283 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
20284 | { | |
20285 | struct attribute *attr; | |
20286 | const char *str = NULL; | |
20287 | ||
20288 | attr = dwarf2_attr (die, name, cu); | |
20289 | ||
20290 | if (attr != NULL) | |
20291 | { | |
95f982e5 | 20292 | str = attr->as_string (); |
e61108c9 | 20293 | if (str == nullptr) |
b98664d3 | 20294 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
20295 | "DIE at %s in module %s"), |
20296 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
5e22e966 | 20297 | objfile_name (cu->per_objfile->objfile)); |
7d45c7c3 KB |
20298 | } |
20299 | ||
20300 | return str; | |
20301 | } | |
20302 | ||
a084a2a6 | 20303 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 20304 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
20305 | static const char * |
20306 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
20307 | { | |
20308 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
20309 | if (dwo_name == nullptr) | |
20310 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
20311 | return dwo_name; | |
20312 | } | |
20313 | ||
05cf31d1 JB |
20314 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
20315 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 20316 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
20317 | |
20318 | static int | |
20319 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
20320 | { | |
20321 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
20322 | ||
20323 | return (attr && DW_UNSND (attr)); | |
20324 | } | |
20325 | ||
3ca72b44 | 20326 | static int |
e142c38c | 20327 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 20328 | { |
05cf31d1 JB |
20329 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
20330 | which value is non-zero. However, we have to be careful with | |
20331 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
20332 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
20333 | end up accidently finding a declaration attribute that belongs | |
20334 | to a different DIE referenced by the specification attribute, | |
20335 | even though the given DIE does not have a declaration attribute. */ | |
20336 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
20337 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
20338 | } |
20339 | ||
63d06c5c | 20340 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 20341 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
20342 | containing the return value on output. If there is no |
20343 | specification, but there is an abstract origin, that is | |
20344 | returned. */ | |
63d06c5c DC |
20345 | |
20346 | static struct die_info * | |
f2f0e013 | 20347 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 20348 | { |
f2f0e013 DJ |
20349 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
20350 | *spec_cu); | |
63d06c5c | 20351 | |
edb3359d DJ |
20352 | if (spec_attr == NULL) |
20353 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
20354 | ||
63d06c5c DC |
20355 | if (spec_attr == NULL) |
20356 | return NULL; | |
20357 | else | |
f2f0e013 | 20358 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 20359 | } |
c906108c | 20360 | |
527f3840 JK |
20361 | /* Stub for free_line_header to match void * callback types. */ |
20362 | ||
20363 | static void | |
20364 | free_line_header_voidp (void *arg) | |
20365 | { | |
9a3c8263 | 20366 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 20367 | |
fff8551c | 20368 | delete lh; |
527f3840 JK |
20369 | } |
20370 | ||
83769d0b | 20371 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
20372 | |
20373 | static struct dwarf2_section_info * | |
20374 | get_debug_line_section (struct dwarf2_cu *cu) | |
20375 | { | |
20376 | struct dwarf2_section_info *section; | |
976ca316 | 20377 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
36586728 TT |
20378 | |
20379 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
20380 | DWO file. */ | |
20381 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
20382 | section = &cu->dwo_unit->dwo_file->sections.line; | |
20383 | else if (cu->per_cu->is_dwz) | |
20384 | { | |
976ca316 | 20385 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
36586728 TT |
20386 | |
20387 | section = &dwz->line; | |
20388 | } | |
20389 | else | |
976ca316 | 20390 | section = &per_objfile->per_bfd->line; |
36586728 TT |
20391 | |
20392 | return section; | |
20393 | } | |
20394 | ||
debd256d | 20395 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20396 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20397 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20398 | Returns NULL if there is a problem reading the header, e.g., if it |
20399 | has a version we don't understand. | |
debd256d JB |
20400 | |
20401 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20402 | the returned object point into the dwarf line section buffer, |
20403 | and must not be freed. */ | |
ae2de4f8 | 20404 | |
fff8551c | 20405 | static line_header_up |
9c541725 | 20406 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20407 | { |
3019eac3 | 20408 | struct dwarf2_section_info *section; |
976ca316 | 20409 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 20410 | |
36586728 | 20411 | section = get_debug_line_section (cu); |
976ca316 | 20412 | section->read (per_objfile->objfile); |
3019eac3 | 20413 | if (section->buffer == NULL) |
debd256d | 20414 | { |
3019eac3 | 20415 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 20416 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 20417 | else |
b98664d3 | 20418 | complaint (_("missing .debug_line section")); |
debd256d JB |
20419 | return 0; |
20420 | } | |
20421 | ||
0df7ad3a | 20422 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
976ca316 | 20423 | per_objfile, section, &cu->header); |
debd256d | 20424 | } |
c906108c | 20425 | |
c6da4cef | 20426 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 20427 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 20428 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
20429 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20430 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20431 | |
d521ce57 | 20432 | static const char * |
7ba99d21 | 20433 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 20434 | const dwarf2_psymtab *pst, |
c89b44cd TT |
20435 | const char *comp_dir, |
20436 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20437 | { |
d521ce57 TT |
20438 | const char *include_name = fe.name; |
20439 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20440 | const char *pst_filename; |
c6da4cef DE |
20441 | int file_is_pst; |
20442 | ||
8c43009f | 20443 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20444 | |
c89b44cd | 20445 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20446 | if (!IS_ABSOLUTE_PATH (include_name) |
20447 | && (dir_name != NULL || comp_dir != NULL)) | |
20448 | { | |
20449 | /* Avoid creating a duplicate psymtab for PST. | |
20450 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20451 | Before we do the comparison, however, we need to account | |
20452 | for DIR_NAME and COMP_DIR. | |
20453 | First prepend dir_name (if non-NULL). If we still don't | |
20454 | have an absolute path prepend comp_dir (if non-NULL). | |
20455 | However, the directory we record in the include-file's | |
20456 | psymtab does not contain COMP_DIR (to match the | |
20457 | corresponding symtab(s)). | |
20458 | ||
20459 | Example: | |
20460 | ||
20461 | bash$ cd /tmp | |
20462 | bash$ gcc -g ./hello.c | |
20463 | include_name = "hello.c" | |
20464 | dir_name = "." | |
20465 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20466 | DW_AT_name = "./hello.c" |
20467 | ||
20468 | */ | |
c6da4cef DE |
20469 | |
20470 | if (dir_name != NULL) | |
20471 | { | |
c89b44cd TT |
20472 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20473 | include_name, (char *) NULL)); | |
20474 | include_name = name_holder->get (); | |
c6da4cef | 20475 | include_name_to_compare = include_name; |
c6da4cef DE |
20476 | } |
20477 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20478 | { | |
c89b44cd TT |
20479 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20480 | include_name, (char *) NULL)); | |
20481 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20482 | } |
20483 | } | |
20484 | ||
20485 | pst_filename = pst->filename; | |
c89b44cd | 20486 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20487 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20488 | { | |
c89b44cd TT |
20489 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20490 | pst_filename, (char *) NULL)); | |
20491 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20492 | } |
20493 | ||
1e3fad37 | 20494 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20495 | |
c6da4cef DE |
20496 | if (file_is_pst) |
20497 | return NULL; | |
20498 | return include_name; | |
20499 | } | |
20500 | ||
d9b3de22 DE |
20501 | /* State machine to track the state of the line number program. */ |
20502 | ||
6f77053d | 20503 | class lnp_state_machine |
d9b3de22 | 20504 | { |
6f77053d PA |
20505 | public: |
20506 | /* Initialize a machine state for the start of a line number | |
20507 | program. */ | |
804d2729 TT |
20508 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
20509 | bool record_lines_p); | |
6f77053d | 20510 | |
8c43009f PA |
20511 | file_entry *current_file () |
20512 | { | |
20513 | /* lh->file_names is 0-based, but the file name numbers in the | |
20514 | statement program are 1-based. */ | |
6f77053d PA |
20515 | return m_line_header->file_name_at (m_file); |
20516 | } | |
20517 | ||
20518 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20519 | we're processing the end of a sequence. */ | |
20520 | void record_line (bool end_sequence); | |
20521 | ||
a8caed5d | 20522 | /* Check ADDRESS is -1, or zero and less than UNRELOCATED_LOWPC, and if true |
7ab6656f | 20523 | nop-out rest of the lines in this sequence. */ |
6f77053d PA |
20524 | void check_line_address (struct dwarf2_cu *cu, |
20525 | const gdb_byte *line_ptr, | |
7ab6656f | 20526 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
20527 | |
20528 | void handle_set_discriminator (unsigned int discriminator) | |
20529 | { | |
20530 | m_discriminator = discriminator; | |
20531 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20532 | } | |
20533 | ||
20534 | /* Handle DW_LNE_set_address. */ | |
20535 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20536 | { | |
20537 | m_op_index = 0; | |
20538 | address += baseaddr; | |
20539 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20540 | } | |
20541 | ||
20542 | /* Handle DW_LNS_advance_pc. */ | |
20543 | void handle_advance_pc (CORE_ADDR adjust); | |
20544 | ||
20545 | /* Handle a special opcode. */ | |
20546 | void handle_special_opcode (unsigned char op_code); | |
20547 | ||
20548 | /* Handle DW_LNS_advance_line. */ | |
20549 | void handle_advance_line (int line_delta) | |
20550 | { | |
20551 | advance_line (line_delta); | |
20552 | } | |
20553 | ||
20554 | /* Handle DW_LNS_set_file. */ | |
20555 | void handle_set_file (file_name_index file); | |
20556 | ||
20557 | /* Handle DW_LNS_negate_stmt. */ | |
20558 | void handle_negate_stmt () | |
20559 | { | |
20560 | m_is_stmt = !m_is_stmt; | |
20561 | } | |
20562 | ||
20563 | /* Handle DW_LNS_const_add_pc. */ | |
20564 | void handle_const_add_pc (); | |
20565 | ||
20566 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20567 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20568 | { | |
20569 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20570 | m_op_index = 0; | |
20571 | } | |
20572 | ||
20573 | /* Handle DW_LNS_copy. */ | |
20574 | void handle_copy () | |
20575 | { | |
20576 | record_line (false); | |
20577 | m_discriminator = 0; | |
20578 | } | |
20579 | ||
20580 | /* Handle DW_LNE_end_sequence. */ | |
20581 | void handle_end_sequence () | |
20582 | { | |
804d2729 | 20583 | m_currently_recording_lines = true; |
6f77053d PA |
20584 | } |
20585 | ||
20586 | private: | |
20587 | /* Advance the line by LINE_DELTA. */ | |
20588 | void advance_line (int line_delta) | |
20589 | { | |
20590 | m_line += line_delta; | |
20591 | ||
20592 | if (line_delta != 0) | |
20593 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20594 | } |
20595 | ||
804d2729 TT |
20596 | struct dwarf2_cu *m_cu; |
20597 | ||
6f77053d PA |
20598 | gdbarch *m_gdbarch; |
20599 | ||
20600 | /* True if we're recording lines. | |
20601 | Otherwise we're building partial symtabs and are just interested in | |
20602 | finding include files mentioned by the line number program. */ | |
20603 | bool m_record_lines_p; | |
20604 | ||
8c43009f | 20605 | /* The line number header. */ |
6f77053d | 20606 | line_header *m_line_header; |
8c43009f | 20607 | |
6f77053d PA |
20608 | /* These are part of the standard DWARF line number state machine, |
20609 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20610 | |
6f77053d | 20611 | unsigned char m_op_index = 0; |
7ba99d21 AT |
20612 | /* The line table index of the current file. */ |
20613 | file_name_index m_file = 1; | |
6f77053d PA |
20614 | unsigned int m_line = 1; |
20615 | ||
20616 | /* These are initialized in the constructor. */ | |
20617 | ||
20618 | CORE_ADDR m_address; | |
20619 | bool m_is_stmt; | |
20620 | unsigned int m_discriminator; | |
d9b3de22 DE |
20621 | |
20622 | /* Additional bits of state we need to track. */ | |
20623 | ||
20624 | /* The last file that we called dwarf2_start_subfile for. | |
20625 | This is only used for TLLs. */ | |
6f77053d | 20626 | unsigned int m_last_file = 0; |
d9b3de22 | 20627 | /* The last file a line number was recorded for. */ |
6f77053d | 20628 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 20629 | |
1313c56e AB |
20630 | /* The address of the last line entry. */ |
20631 | CORE_ADDR m_last_address; | |
20632 | ||
20633 | /* Set to true when a previous line at the same address (using | |
20634 | m_last_address) had m_is_stmt true. This is reset to false when a | |
20635 | line entry at a new address (m_address different to m_last_address) is | |
20636 | processed. */ | |
20637 | bool m_stmt_at_address = false; | |
20638 | ||
804d2729 TT |
20639 | /* When true, record the lines we decode. */ |
20640 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
20641 | |
20642 | /* The last line number that was recorded, used to coalesce | |
20643 | consecutive entries for the same line. This can happen, for | |
20644 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20645 | unsigned int m_last_line = 0; |
20646 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20647 | }; |
d9b3de22 | 20648 | |
6f77053d PA |
20649 | void |
20650 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20651 | { | |
20652 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20653 | / m_line_header->maximum_ops_per_instruction) | |
20654 | * m_line_header->minimum_instruction_length); | |
20655 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20656 | m_op_index = ((m_op_index + adjust) | |
20657 | % m_line_header->maximum_ops_per_instruction); | |
20658 | } | |
d9b3de22 | 20659 | |
6f77053d PA |
20660 | void |
20661 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20662 | { |
6f77053d | 20663 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
20664 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
20665 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
20666 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
20667 | / m_line_header->maximum_ops_per_instruction) |
20668 | * m_line_header->minimum_instruction_length); | |
20669 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 20670 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 20671 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 20672 | |
258bf0ee | 20673 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
20674 | advance_line (line_delta); |
20675 | record_line (false); | |
20676 | m_discriminator = 0; | |
20677 | } | |
d9b3de22 | 20678 | |
6f77053d PA |
20679 | void |
20680 | lnp_state_machine::handle_set_file (file_name_index file) | |
20681 | { | |
20682 | m_file = file; | |
20683 | ||
20684 | const file_entry *fe = current_file (); | |
20685 | if (fe == NULL) | |
20686 | dwarf2_debug_line_missing_file_complaint (); | |
20687 | else if (m_record_lines_p) | |
20688 | { | |
20689 | const char *dir = fe->include_dir (m_line_header); | |
20690 | ||
c24bdb02 | 20691 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20692 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 20693 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
20694 | } |
20695 | } | |
20696 | ||
20697 | void | |
20698 | lnp_state_machine::handle_const_add_pc () | |
20699 | { | |
20700 | CORE_ADDR adjust | |
20701 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20702 | ||
20703 | CORE_ADDR addr_adj | |
20704 | = (((m_op_index + adjust) | |
20705 | / m_line_header->maximum_ops_per_instruction) | |
20706 | * m_line_header->minimum_instruction_length); | |
20707 | ||
20708 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20709 | m_op_index = ((m_op_index + adjust) | |
20710 | % m_line_header->maximum_ops_per_instruction); | |
20711 | } | |
d9b3de22 | 20712 | |
a05a36a5 DE |
20713 | /* Return non-zero if we should add LINE to the line number table. |
20714 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20715 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20716 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20717 | had a non-zero discriminator. | |
20718 | ||
20719 | We have to be careful in the presence of discriminators. | |
20720 | E.g., for this line: | |
20721 | ||
20722 | for (i = 0; i < 100000; i++); | |
20723 | ||
20724 | clang can emit four line number entries for that one line, | |
20725 | each with a different discriminator. | |
20726 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20727 | ||
20728 | However, we want gdb to coalesce all four entries into one. | |
20729 | Otherwise the user could stepi into the middle of the line and | |
20730 | gdb would get confused about whether the pc really was in the | |
20731 | middle of the line. | |
20732 | ||
20733 | Things are further complicated by the fact that two consecutive | |
20734 | line number entries for the same line is a heuristic used by gcc | |
20735 | to denote the end of the prologue. So we can't just discard duplicate | |
20736 | entries, we have to be selective about it. The heuristic we use is | |
20737 | that we only collapse consecutive entries for the same line if at least | |
20738 | one of those entries has a non-zero discriminator. PR 17276. | |
20739 | ||
20740 | Note: Addresses in the line number state machine can never go backwards | |
20741 | within one sequence, thus this coalescing is ok. */ | |
20742 | ||
20743 | static int | |
804d2729 TT |
20744 | dwarf_record_line_p (struct dwarf2_cu *cu, |
20745 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
20746 | int line_has_non_zero_discriminator, |
20747 | struct subfile *last_subfile) | |
20748 | { | |
c24bdb02 | 20749 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
20750 | return 1; |
20751 | if (line != last_line) | |
20752 | return 1; | |
20753 | /* Same line for the same file that we've seen already. | |
20754 | As a last check, for pr 17276, only record the line if the line | |
20755 | has never had a non-zero discriminator. */ | |
20756 | if (!line_has_non_zero_discriminator) | |
20757 | return 1; | |
20758 | return 0; | |
20759 | } | |
20760 | ||
804d2729 TT |
20761 | /* Use the CU's builder to record line number LINE beginning at |
20762 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
20763 | |
20764 | static void | |
d9b3de22 | 20765 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 20766 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 20767 | struct dwarf2_cu *cu) |
252a6764 DE |
20768 | { |
20769 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20770 | ||
27e0867f DE |
20771 | if (dwarf_line_debug) |
20772 | { | |
20773 | fprintf_unfiltered (gdb_stdlog, | |
20774 | "Recording line %u, file %s, address %s\n", | |
20775 | line, lbasename (subfile->name), | |
20776 | paddress (gdbarch, address)); | |
20777 | } | |
20778 | ||
804d2729 | 20779 | if (cu != nullptr) |
8c95582d | 20780 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
20781 | } |
20782 | ||
20783 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20784 | Mark the end of a set of line number records. | |
d9b3de22 | 20785 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20786 | If SUBFILE is NULL the request is ignored. */ |
20787 | ||
20788 | static void | |
20789 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 20790 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 20791 | { |
27e0867f DE |
20792 | if (subfile == NULL) |
20793 | return; | |
20794 | ||
20795 | if (dwarf_line_debug) | |
20796 | { | |
20797 | fprintf_unfiltered (gdb_stdlog, | |
20798 | "Finishing current line, file %s, address %s\n", | |
20799 | lbasename (subfile->name), | |
20800 | paddress (gdbarch, address)); | |
20801 | } | |
20802 | ||
8c95582d | 20803 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
20804 | } |
20805 | ||
6f77053d PA |
20806 | void |
20807 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20808 | { |
d9b3de22 DE |
20809 | if (dwarf_line_debug) |
20810 | { | |
20811 | fprintf_unfiltered (gdb_stdlog, | |
20812 | "Processing actual line %u: file %u," | |
94a72be7 | 20813 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 20814 | m_line, m_file, |
6f77053d | 20815 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
20816 | m_is_stmt, m_discriminator, |
20817 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
20818 | } |
20819 | ||
6f77053d | 20820 | file_entry *fe = current_file (); |
8c43009f PA |
20821 | |
20822 | if (fe == NULL) | |
d9b3de22 DE |
20823 | dwarf2_debug_line_missing_file_complaint (); |
20824 | /* For now we ignore lines not starting on an instruction boundary. | |
20825 | But not when processing end_sequence for compatibility with the | |
20826 | previous version of the code. */ | |
6f77053d | 20827 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20828 | { |
8c43009f | 20829 | fe->included_p = 1; |
8c95582d | 20830 | if (m_record_lines_p) |
d9b3de22 | 20831 | { |
1313c56e AB |
20832 | /* When we switch files we insert an end maker in the first file, |
20833 | switch to the second file and add a new line entry. The | |
20834 | problem is that the end marker inserted in the first file will | |
20835 | discard any previous line entries at the same address. If the | |
20836 | line entries in the first file are marked as is-stmt, while | |
20837 | the new line in the second file is non-stmt, then this means | |
20838 | the end marker will discard is-stmt lines so we can have a | |
20839 | non-stmt line. This means that there are less addresses at | |
20840 | which the user can insert a breakpoint. | |
20841 | ||
20842 | To improve this we track the last address in m_last_address, | |
20843 | and whether we have seen an is-stmt at this address. Then | |
20844 | when switching files, if we have seen a stmt at the current | |
20845 | address, and we are switching to create a non-stmt line, then | |
20846 | discard the new line. */ | |
20847 | bool file_changed | |
20848 | = m_last_subfile != m_cu->get_builder ()->get_current_subfile (); | |
20849 | bool ignore_this_line | |
876518dd TV |
20850 | = ((file_changed && !end_sequence && m_last_address == m_address |
20851 | && !m_is_stmt && m_stmt_at_address) | |
20852 | || (!end_sequence && m_line == 0)); | |
1313c56e AB |
20853 | |
20854 | if ((file_changed && !ignore_this_line) || end_sequence) | |
d9b3de22 | 20855 | { |
804d2729 TT |
20856 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
20857 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
20858 | } |
20859 | ||
1313c56e | 20860 | if (!end_sequence && !ignore_this_line) |
d9b3de22 | 20861 | { |
8c95582d AB |
20862 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
20863 | ||
804d2729 | 20864 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
20865 | m_line_has_non_zero_discriminator, |
20866 | m_last_subfile)) | |
d9b3de22 | 20867 | { |
c24bdb02 | 20868 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 20869 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 20870 | builder->get_current_subfile (), |
8c95582d | 20871 | m_line, m_address, is_stmt, |
804d2729 | 20872 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 20873 | } |
c24bdb02 | 20874 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20875 | m_last_line = m_line; |
d9b3de22 DE |
20876 | } |
20877 | } | |
20878 | } | |
1313c56e AB |
20879 | |
20880 | /* Track whether we have seen any m_is_stmt true at m_address in case we | |
20881 | have multiple line table entries all at m_address. */ | |
20882 | if (m_last_address != m_address) | |
20883 | { | |
20884 | m_stmt_at_address = false; | |
20885 | m_last_address = m_address; | |
20886 | } | |
20887 | m_stmt_at_address |= m_is_stmt; | |
d9b3de22 DE |
20888 | } |
20889 | ||
804d2729 TT |
20890 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
20891 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 20892 | { |
804d2729 | 20893 | m_cu = cu; |
6f77053d PA |
20894 | m_gdbarch = arch; |
20895 | m_record_lines_p = record_lines_p; | |
20896 | m_line_header = lh; | |
d9b3de22 | 20897 | |
804d2729 | 20898 | m_currently_recording_lines = true; |
d9b3de22 | 20899 | |
d9b3de22 DE |
20900 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20901 | was a line entry for it so that the backend has a chance to adjust it | |
20902 | and also record it in case it needs it. This is currently used by MIPS | |
20903 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20904 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20905 | m_is_stmt = lh->default_is_stmt; | |
20906 | m_discriminator = 0; | |
1313c56e AB |
20907 | |
20908 | m_last_address = m_address; | |
20909 | m_stmt_at_address = false; | |
252a6764 DE |
20910 | } |
20911 | ||
6f77053d PA |
20912 | void |
20913 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20914 | const gdb_byte *line_ptr, | |
7ab6656f | 20915 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 20916 | { |
a8caed5d FS |
20917 | /* Linkers resolve a symbolic relocation referencing a GC'd function to 0 or |
20918 | -1. If ADDRESS is 0, ignoring the opcode will err if the text section is | |
20919 | located at 0x0. In this case, additionally check that if | |
20920 | ADDRESS < UNRELOCATED_LOWPC. */ | |
924c2928 | 20921 | |
a8caed5d FS |
20922 | if ((address == 0 && address < unrelocated_lowpc) |
20923 | || address == (CORE_ADDR) -1) | |
924c2928 DE |
20924 | { |
20925 | /* This line table is for a function which has been | |
20926 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20927 | ||
5e22e966 | 20928 | struct objfile *objfile = cu->per_objfile->objfile; |
924c2928 DE |
20929 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20930 | ||
b98664d3 | 20931 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 20932 | line_offset, objfile_name (objfile)); |
804d2729 TT |
20933 | m_currently_recording_lines = false; |
20934 | /* Note: m_currently_recording_lines is left as false until we see | |
20935 | DW_LNE_end_sequence. */ | |
924c2928 DE |
20936 | } |
20937 | } | |
20938 | ||
f3f5162e | 20939 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20940 | Process the line number information in LH. |
20941 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20942 | program in order to set included_p for every referenced header. */ | |
debd256d | 20943 | |
c906108c | 20944 | static void |
43f3e411 DE |
20945 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20946 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20947 | { |
d521ce57 TT |
20948 | const gdb_byte *line_ptr, *extended_end; |
20949 | const gdb_byte *line_end; | |
a8c50c1f | 20950 | unsigned int bytes_read, extended_len; |
699ca60a | 20951 | unsigned char op_code, extended_op; |
e142c38c | 20952 | CORE_ADDR baseaddr; |
5e22e966 | 20953 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 20954 | bfd *abfd = objfile->obfd; |
08feed99 | 20955 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
20956 | /* True if we're recording line info (as opposed to building partial |
20957 | symtabs and just interested in finding include files mentioned by | |
20958 | the line number program). */ | |
20959 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 20960 | |
b3b3bada | 20961 | baseaddr = objfile->text_section_offset (); |
c906108c | 20962 | |
debd256d JB |
20963 | line_ptr = lh->statement_program_start; |
20964 | line_end = lh->statement_program_end; | |
c906108c SS |
20965 | |
20966 | /* Read the statement sequences until there's nothing left. */ | |
20967 | while (line_ptr < line_end) | |
20968 | { | |
6f77053d PA |
20969 | /* The DWARF line number program state machine. Reset the state |
20970 | machine at the start of each sequence. */ | |
804d2729 | 20971 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 20972 | bool end_sequence = false; |
d9b3de22 | 20973 | |
8c43009f | 20974 | if (record_lines_p) |
c906108c | 20975 | { |
8c43009f PA |
20976 | /* Start a subfile for the current file of the state |
20977 | machine. */ | |
20978 | const file_entry *fe = state_machine.current_file (); | |
20979 | ||
20980 | if (fe != NULL) | |
804d2729 | 20981 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
20982 | } |
20983 | ||
a738430d | 20984 | /* Decode the table. */ |
d9b3de22 | 20985 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20986 | { |
20987 | op_code = read_1_byte (abfd, line_ptr); | |
20988 | line_ptr += 1; | |
9aa1fe7e | 20989 | |
debd256d | 20990 | if (op_code >= lh->opcode_base) |
6e70227d | 20991 | { |
8e07a239 | 20992 | /* Special opcode. */ |
6f77053d | 20993 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20994 | } |
20995 | else switch (op_code) | |
c906108c SS |
20996 | { |
20997 | case DW_LNS_extended_op: | |
3e43a32a MS |
20998 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20999 | &bytes_read); | |
473b7be6 | 21000 | line_ptr += bytes_read; |
a8c50c1f | 21001 | extended_end = line_ptr + extended_len; |
c906108c SS |
21002 | extended_op = read_1_byte (abfd, line_ptr); |
21003 | line_ptr += 1; | |
8f34b746 TV |
21004 | if (DW_LNE_lo_user <= extended_op |
21005 | && extended_op <= DW_LNE_hi_user) | |
21006 | { | |
21007 | /* Vendor extension, ignore. */ | |
21008 | line_ptr = extended_end; | |
21009 | break; | |
21010 | } | |
c906108c SS |
21011 | switch (extended_op) |
21012 | { | |
21013 | case DW_LNE_end_sequence: | |
6f77053d PA |
21014 | state_machine.handle_end_sequence (); |
21015 | end_sequence = true; | |
c906108c SS |
21016 | break; |
21017 | case DW_LNE_set_address: | |
d9b3de22 DE |
21018 | { |
21019 | CORE_ADDR address | |
c8a7a66f | 21020 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 21021 | line_ptr += bytes_read; |
6f77053d PA |
21022 | |
21023 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 21024 | lowpc - baseaddr, address); |
6f77053d | 21025 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 21026 | } |
c906108c SS |
21027 | break; |
21028 | case DW_LNE_define_file: | |
debd256d | 21029 | { |
d521ce57 | 21030 | const char *cur_file; |
ecfb656c PA |
21031 | unsigned int mod_time, length; |
21032 | dir_index dindex; | |
6e70227d | 21033 | |
3e43a32a MS |
21034 | cur_file = read_direct_string (abfd, line_ptr, |
21035 | &bytes_read); | |
debd256d | 21036 | line_ptr += bytes_read; |
ecfb656c | 21037 | dindex = (dir_index) |
debd256d JB |
21038 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
21039 | line_ptr += bytes_read; | |
21040 | mod_time = | |
21041 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21042 | line_ptr += bytes_read; | |
21043 | length = | |
21044 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21045 | line_ptr += bytes_read; | |
ecfb656c | 21046 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 21047 | } |
c906108c | 21048 | break; |
d0c6ba3d | 21049 | case DW_LNE_set_discriminator: |
6f77053d PA |
21050 | { |
21051 | /* The discriminator is not interesting to the | |
21052 | debugger; just ignore it. We still need to | |
21053 | check its value though: | |
21054 | if there are consecutive entries for the same | |
21055 | (non-prologue) line we want to coalesce them. | |
21056 | PR 17276. */ | |
21057 | unsigned int discr | |
21058 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21059 | line_ptr += bytes_read; | |
21060 | ||
21061 | state_machine.handle_set_discriminator (discr); | |
21062 | } | |
d0c6ba3d | 21063 | break; |
c906108c | 21064 | default: |
b98664d3 | 21065 | complaint (_("mangled .debug_line section")); |
debd256d | 21066 | return; |
c906108c | 21067 | } |
a8c50c1f DJ |
21068 | /* Make sure that we parsed the extended op correctly. If e.g. |
21069 | we expected a different address size than the producer used, | |
21070 | we may have read the wrong number of bytes. */ | |
21071 | if (line_ptr != extended_end) | |
21072 | { | |
b98664d3 | 21073 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
21074 | return; |
21075 | } | |
c906108c SS |
21076 | break; |
21077 | case DW_LNS_copy: | |
6f77053d | 21078 | state_machine.handle_copy (); |
c906108c SS |
21079 | break; |
21080 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21081 | { |
21082 | CORE_ADDR adjust | |
21083 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21084 | line_ptr += bytes_read; |
6f77053d PA |
21085 | |
21086 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21087 | } |
c906108c SS |
21088 | break; |
21089 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21090 | { |
21091 | int line_delta | |
21092 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21093 | line_ptr += bytes_read; |
6f77053d PA |
21094 | |
21095 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21096 | } |
c906108c SS |
21097 | break; |
21098 | case DW_LNS_set_file: | |
d9b3de22 | 21099 | { |
6f77053d | 21100 | file_name_index file |
ecfb656c PA |
21101 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21102 | &bytes_read); | |
d9b3de22 | 21103 | line_ptr += bytes_read; |
8c43009f | 21104 | |
6f77053d | 21105 | state_machine.handle_set_file (file); |
d9b3de22 | 21106 | } |
c906108c SS |
21107 | break; |
21108 | case DW_LNS_set_column: | |
0ad93d4f | 21109 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21110 | line_ptr += bytes_read; |
21111 | break; | |
21112 | case DW_LNS_negate_stmt: | |
6f77053d | 21113 | state_machine.handle_negate_stmt (); |
c906108c SS |
21114 | break; |
21115 | case DW_LNS_set_basic_block: | |
c906108c | 21116 | break; |
c2c6d25f JM |
21117 | /* Add to the address register of the state machine the |
21118 | address increment value corresponding to special opcode | |
a738430d MK |
21119 | 255. I.e., this value is scaled by the minimum |
21120 | instruction length since special opcode 255 would have | |
b021a221 | 21121 | scaled the increment. */ |
c906108c | 21122 | case DW_LNS_const_add_pc: |
6f77053d | 21123 | state_machine.handle_const_add_pc (); |
c906108c SS |
21124 | break; |
21125 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21126 | { |
6f77053d | 21127 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21128 | line_ptr += 2; |
6f77053d PA |
21129 | |
21130 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21131 | } |
c906108c | 21132 | break; |
9aa1fe7e | 21133 | default: |
a738430d MK |
21134 | { |
21135 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21136 | int i; |
a738430d | 21137 | |
debd256d | 21138 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21139 | { |
21140 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21141 | line_ptr += bytes_read; | |
21142 | } | |
21143 | } | |
c906108c SS |
21144 | } |
21145 | } | |
d9b3de22 DE |
21146 | |
21147 | if (!end_sequence) | |
21148 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21149 | ||
21150 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21151 | in which case we still finish recording the last line). */ | |
6f77053d | 21152 | state_machine.record_line (true); |
c906108c | 21153 | } |
f3f5162e DE |
21154 | } |
21155 | ||
21156 | /* Decode the Line Number Program (LNP) for the given line_header | |
21157 | structure and CU. The actual information extracted and the type | |
21158 | of structures created from the LNP depends on the value of PST. | |
21159 | ||
21160 | 1. If PST is NULL, then this procedure uses the data from the program | |
21161 | to create all necessary symbol tables, and their linetables. | |
21162 | ||
21163 | 2. If PST is not NULL, this procedure reads the program to determine | |
21164 | the list of files included by the unit represented by PST, and | |
21165 | builds all the associated partial symbol tables. | |
21166 | ||
21167 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21168 | It is used for relative paths in the line table. | |
21169 | NOTE: When processing partial symtabs (pst != NULL), | |
21170 | comp_dir == pst->dirname. | |
21171 | ||
21172 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21173 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21174 | symtab we don't use it in the name of the psymtabs we create. | |
21175 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21176 | A good testcase for this is mb-inline.exp. |
21177 | ||
527f3840 JK |
21178 | LOWPC is the lowest address in CU (or 0 if not known). |
21179 | ||
21180 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21181 | for its PC<->lines mapping information. Otherwise only the filename | |
21182 | table is read in. */ | |
f3f5162e DE |
21183 | |
21184 | static void | |
21185 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 21186 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 21187 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21188 | { |
5e22e966 | 21189 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21190 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21191 | |
527f3840 JK |
21192 | if (decode_mapping) |
21193 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21194 | |
21195 | if (decode_for_pst_p) | |
21196 | { | |
aaa75496 JB |
21197 | /* Now that we're done scanning the Line Header Program, we can |
21198 | create the psymtab of each included file. */ | |
7ba99d21 AT |
21199 | for (auto &file_entry : lh->file_names ()) |
21200 | if (file_entry.included_p == 1) | |
aaa75496 | 21201 | { |
c89b44cd | 21202 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21203 | const char *include_name = |
7ba99d21 AT |
21204 | psymtab_include_file_name (lh, file_entry, pst, |
21205 | comp_dir, &name_holder); | |
c6da4cef | 21206 | if (include_name != NULL) |
aaa75496 JB |
21207 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21208 | } | |
21209 | } | |
cb1df416 DJ |
21210 | else |
21211 | { | |
21212 | /* Make sure a symtab is created for every file, even files | |
21213 | which contain only variables (i.e. no code with associated | |
21214 | line numbers). */ | |
c24bdb02 KS |
21215 | buildsym_compunit *builder = cu->get_builder (); |
21216 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 21217 | |
7ba99d21 | 21218 | for (auto &fe : lh->file_names ()) |
cb1df416 | 21219 | { |
804d2729 | 21220 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 21221 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 21222 | { |
c24bdb02 | 21223 | builder->get_current_subfile ()->symtab |
804d2729 | 21224 | = allocate_symtab (cust, |
c24bdb02 | 21225 | builder->get_current_subfile ()->name); |
43f3e411 | 21226 | } |
c24bdb02 | 21227 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
21228 | } |
21229 | } | |
c906108c SS |
21230 | } |
21231 | ||
21232 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21233 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21234 | or NULL if not known. |
c906108c SS |
21235 | This routine tries to keep line numbers from identical absolute and |
21236 | relative file names in a common subfile. | |
21237 | ||
21238 | Using the `list' example from the GDB testsuite, which resides in | |
21239 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21240 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21241 | ||
c5aa993b | 21242 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21243 | DW_AT_comp_dir: /compdir |
357e46e7 | 21244 | files.files[0].name: list0.h |
c5aa993b | 21245 | files.files[0].dir: /srcdir |
357e46e7 | 21246 | files.files[1].name: list0.c |
c5aa993b | 21247 | files.files[1].dir: /srcdir |
c906108c SS |
21248 | |
21249 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21250 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21251 | start_subfile will ensure that this happens provided that we pass the | |
21252 | concatenation of files.files[1].dir and files.files[1].name as the | |
21253 | subfile's name. */ | |
c906108c SS |
21254 | |
21255 | static void | |
804d2729 TT |
21256 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
21257 | const char *dirname) | |
c906108c | 21258 | { |
43816ebc | 21259 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 21260 | |
4d663531 | 21261 | /* In order not to lose the line information directory, |
4f1520fb FR |
21262 | we concatenate it to the filename when it makes sense. |
21263 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21264 | information): ``The directory index is ignored for file names | |
21265 | that represent full path names''. Thus ignoring dirname in the | |
21266 | `else' branch below isn't an issue. */ | |
c906108c | 21267 | |
d5166ae1 | 21268 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 21269 | { |
43816ebc TT |
21270 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
21271 | filename = copy.get (); | |
d521ce57 | 21272 | } |
c906108c | 21273 | |
c24bdb02 | 21274 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
21275 | } |
21276 | ||
804d2729 TT |
21277 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
21278 | buildsym_compunit constructor. */ | |
f4dc4d17 | 21279 | |
c24bdb02 KS |
21280 | struct compunit_symtab * |
21281 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
21282 | CORE_ADDR low_pc) | |
f4dc4d17 | 21283 | { |
c24bdb02 | 21284 | gdb_assert (m_builder == nullptr); |
43f3e411 | 21285 | |
c24bdb02 | 21286 | m_builder.reset (new struct buildsym_compunit |
f6e649dd | 21287 | (this->per_objfile->objfile, |
c24bdb02 | 21288 | name, comp_dir, language, low_pc)); |
93b8bea4 | 21289 | |
c24bdb02 | 21290 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 21291 | |
c24bdb02 KS |
21292 | get_builder ()->record_debugformat ("DWARF 2"); |
21293 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 21294 | |
c24bdb02 | 21295 | processing_has_namespace_info = false; |
43f3e411 | 21296 | |
c24bdb02 | 21297 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
21298 | } |
21299 | ||
4c2df51b DJ |
21300 | static void |
21301 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21302 | struct dwarf2_cu *cu) |
4c2df51b | 21303 | { |
5e22e966 | 21304 | struct objfile *objfile = cu->per_objfile->objfile; |
e7c27a73 DJ |
21305 | struct comp_unit_head *cu_header = &cu->header; |
21306 | ||
4c2df51b DJ |
21307 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21308 | code here to turn a symbol with DW_AT_external and a | |
21309 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21310 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21311 | with some versions of binutils) where shared libraries could have | |
21312 | relocations against symbols in their debug information - the | |
21313 | minimal symbol would have the right address, but the debug info | |
21314 | would not. It's no longer necessary, because we will explicitly | |
21315 | apply relocations when we read in the debug information now. */ | |
21316 | ||
21317 | /* A DW_AT_location attribute with no contents indicates that a | |
21318 | variable has been optimized away. */ | |
9d2246fc | 21319 | if (attr->form_is_block () && attr->as_block ()->size == 0) |
4c2df51b | 21320 | { |
f1e6e072 | 21321 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21322 | return; |
21323 | } | |
21324 | ||
21325 | /* Handle one degenerate form of location expression specially, to | |
21326 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
21327 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
21328 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 21329 | |
9d2246fc TT |
21330 | if (attr->form_is_block ()) |
21331 | { | |
21332 | struct dwarf_block *block = attr->as_block (); | |
21333 | ||
21334 | if ((block->data[0] == DW_OP_addr | |
21335 | && block->size == 1 + cu_header->addr_size) | |
21336 | || ((block->data[0] == DW_OP_GNU_addr_index | |
21337 | || block->data[0] == DW_OP_addrx) | |
21338 | && (block->size | |
21339 | == 1 + leb128_size (&block->data[1])))) | |
21340 | { | |
21341 | unsigned int dummy; | |
21342 | ||
21343 | if (block->data[0] == DW_OP_addr) | |
21344 | SET_SYMBOL_VALUE_ADDRESS | |
21345 | (sym, cu->header.read_address (objfile->obfd, | |
21346 | block->data + 1, | |
38583298 | 21347 | &dummy)); |
9d2246fc TT |
21348 | else |
21349 | SET_SYMBOL_VALUE_ADDRESS | |
21350 | (sym, read_addr_index_from_leb128 (cu, block->data + 1, | |
21351 | &dummy)); | |
21352 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; | |
21353 | fixup_symbol_section (sym, objfile); | |
21354 | SET_SYMBOL_VALUE_ADDRESS | |
21355 | (sym, | |
21356 | SYMBOL_VALUE_ADDRESS (sym) | |
21357 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
21358 | return; | |
21359 | } | |
4c2df51b DJ |
21360 | } |
21361 | ||
21362 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21363 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21364 | (i.e. when the value of a register or memory location is | |
21365 | referenced, or a thread-local block, etc.). Then again, it might | |
21366 | not be worthwhile. I'm assuming that it isn't unless performance | |
21367 | or memory numbers show me otherwise. */ | |
21368 | ||
f1e6e072 | 21369 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21370 | |
f1e6e072 | 21371 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 21372 | cu->has_loclist = true; |
4c2df51b DJ |
21373 | } |
21374 | ||
c906108c SS |
21375 | /* Given a pointer to a DWARF information entry, figure out if we need |
21376 | to make a symbol table entry for it, and if so, create a new entry | |
21377 | and return a pointer to it. | |
21378 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21379 | used the passed type. |
21380 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21381 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21382 | |
21383 | static struct symbol * | |
5e2db402 TT |
21384 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21385 | struct symbol *space) | |
c906108c | 21386 | { |
976ca316 SM |
21387 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
21388 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 21389 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 21390 | struct symbol *sym = NULL; |
15d034d0 | 21391 | const char *name; |
c906108c SS |
21392 | struct attribute *attr = NULL; |
21393 | struct attribute *attr2 = NULL; | |
e142c38c | 21394 | CORE_ADDR baseaddr; |
e37fd15a SW |
21395 | struct pending **list_to_add = NULL; |
21396 | ||
edb3359d | 21397 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 21398 | |
b3b3bada | 21399 | baseaddr = objfile->text_section_offset (); |
c906108c | 21400 | |
94af9270 | 21401 | name = dwarf2_name (die, cu); |
c906108c SS |
21402 | if (name) |
21403 | { | |
34eaf542 | 21404 | int suppress_add = 0; |
94af9270 | 21405 | |
34eaf542 TT |
21406 | if (space) |
21407 | sym = space; | |
21408 | else | |
8c14c3a3 | 21409 | sym = new (&objfile->objfile_obstack) symbol; |
c906108c | 21410 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21411 | |
21412 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 21413 | sym->set_language (cu->language, &objfile->objfile_obstack); |
f55ee35c JK |
21414 | /* Fortran does not have mangling standard and the mangling does differ |
21415 | between gfortran, iFort etc. */ | |
bcfe6157 TT |
21416 | const char *physname |
21417 | = (cu->language == language_fortran | |
21418 | ? dwarf2_full_name (name, die, cu) | |
21419 | : dwarf2_physname (name, die, cu)); | |
21420 | const char *linkagename = dw2_linkage_name (die, cu); | |
21421 | ||
21422 | if (linkagename == nullptr || cu->language == language_ada) | |
21423 | sym->set_linkage_name (physname); | |
21424 | else | |
21425 | { | |
21426 | sym->set_demangled_name (physname, &objfile->objfile_obstack); | |
21427 | sym->set_linkage_name (linkagename); | |
21428 | } | |
f55ee35c | 21429 | |
c906108c | 21430 | /* Default assumptions. |
c5aa993b | 21431 | Use the passed type or decode it from the die. */ |
176620f1 | 21432 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21433 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21434 | if (type != NULL) |
21435 | SYMBOL_TYPE (sym) = type; | |
21436 | else | |
e7c27a73 | 21437 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21438 | attr = dwarf2_attr (die, |
21439 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21440 | cu); | |
435d3d88 | 21441 | if (attr != nullptr) |
c906108c SS |
21442 | { |
21443 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
21444 | } | |
cb1df416 | 21445 | |
edb3359d DJ |
21446 | attr = dwarf2_attr (die, |
21447 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21448 | cu); | |
435d3d88 | 21449 | if (attr != nullptr) |
cb1df416 | 21450 | { |
ecfb656c | 21451 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 21452 | struct file_entry *fe; |
9a619af0 | 21453 | |
ecfb656c PA |
21454 | if (cu->line_header != NULL) |
21455 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21456 | else |
21457 | fe = NULL; | |
21458 | ||
21459 | if (fe == NULL) | |
b98664d3 | 21460 | complaint (_("file index out of range")); |
8c43009f PA |
21461 | else |
21462 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21463 | } |
21464 | ||
c906108c SS |
21465 | switch (die->tag) |
21466 | { | |
21467 | case DW_TAG_label: | |
e142c38c | 21468 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 21469 | if (attr != nullptr) |
3e29f34a MR |
21470 | { |
21471 | CORE_ADDR addr; | |
21472 | ||
95f982e5 | 21473 | addr = attr->as_address (); |
3e29f34a | 21474 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 21475 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
8f5c6526 | 21476 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
3e29f34a | 21477 | } |
8f5c6526 TV |
21478 | else |
21479 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; | |
0f5238ed TT |
21480 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21481 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
d3cb6808 | 21482 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21483 | break; |
21484 | case DW_TAG_subprogram: | |
21485 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21486 | finish_block. */ | |
f1e6e072 | 21487 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21488 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d | 21489 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
0a4b0913 AB |
21490 | || cu->language == language_ada |
21491 | || cu->language == language_fortran) | |
c906108c | 21492 | { |
2cfa0c8d | 21493 | /* Subprograms marked external are stored as a global symbol. |
0a4b0913 AB |
21494 | Ada and Fortran subprograms, whether marked external or |
21495 | not, are always stored as a global symbol, because we want | |
21496 | to be able to access them globally. For instance, we want | |
21497 | to be able to break on a nested subprogram without having | |
21498 | to specify the context. */ | |
c24bdb02 | 21499 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
21500 | } |
21501 | else | |
21502 | { | |
e37fd15a | 21503 | list_to_add = cu->list_in_scope; |
c906108c SS |
21504 | } |
21505 | break; | |
edb3359d DJ |
21506 | case DW_TAG_inlined_subroutine: |
21507 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21508 | finish_block. */ | |
f1e6e072 | 21509 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21510 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21511 | list_to_add = cu->list_in_scope; |
edb3359d | 21512 | break; |
34eaf542 TT |
21513 | case DW_TAG_template_value_param: |
21514 | suppress_add = 1; | |
21515 | /* Fall through. */ | |
72929c62 | 21516 | case DW_TAG_constant: |
c906108c | 21517 | case DW_TAG_variable: |
254e6b9e | 21518 | case DW_TAG_member: |
0963b4bd MS |
21519 | /* Compilation with minimal debug info may result in |
21520 | variables with missing type entries. Change the | |
21521 | misleading `void' type to something sensible. */ | |
78134374 | 21522 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_VOID) |
46a4882b | 21523 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21524 | |
e142c38c | 21525 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21526 | /* In the case of DW_TAG_member, we should only be called for |
21527 | static const members. */ | |
21528 | if (die->tag == DW_TAG_member) | |
21529 | { | |
3863f96c DE |
21530 | /* dwarf2_add_field uses die_is_declaration, |
21531 | so we do the same. */ | |
254e6b9e DE |
21532 | gdb_assert (die_is_declaration (die, cu)); |
21533 | gdb_assert (attr); | |
21534 | } | |
435d3d88 | 21535 | if (attr != nullptr) |
c906108c | 21536 | { |
e7c27a73 | 21537 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21538 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21539 | if (!suppress_add) |
34eaf542 TT |
21540 | { |
21541 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 21542 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 21543 | else |
e37fd15a | 21544 | list_to_add = cu->list_in_scope; |
34eaf542 | 21545 | } |
c906108c SS |
21546 | break; |
21547 | } | |
e142c38c | 21548 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 21549 | if (attr != nullptr) |
c906108c | 21550 | { |
e7c27a73 | 21551 | var_decode_location (attr, sym, cu); |
e142c38c | 21552 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21553 | |
21554 | /* Fortran explicitly imports any global symbols to the local | |
21555 | scope by DW_TAG_common_block. */ | |
21556 | if (cu->language == language_fortran && die->parent | |
21557 | && die->parent->tag == DW_TAG_common_block) | |
21558 | attr2 = NULL; | |
21559 | ||
caac4577 JG |
21560 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21561 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
976ca316 | 21562 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
21563 | { |
21564 | /* When a static variable is eliminated by the linker, | |
21565 | the corresponding debug information is not stripped | |
21566 | out, but the variable address is set to null; | |
21567 | do not add such variables into symbol table. */ | |
21568 | } | |
21569 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21570 | { |
4b610737 TT |
21571 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21572 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
976ca316 | 21573 | && per_objfile->per_bfd->can_copy) |
4b610737 TT |
21574 | { |
21575 | /* A global static variable might be subject to | |
21576 | copy relocation. We first check for a local | |
21577 | minsym, though, because maybe the symbol was | |
21578 | marked hidden, in which case this would not | |
21579 | apply. */ | |
21580 | bound_minimal_symbol found | |
21581 | = (lookup_minimal_symbol_linkage | |
987012b8 | 21582 | (sym->linkage_name (), objfile)); |
4b610737 TT |
21583 | if (found.minsym != nullptr) |
21584 | sym->maybe_copied = 1; | |
21585 | } | |
f55ee35c | 21586 | |
1c809c68 TT |
21587 | /* A variable with DW_AT_external is never static, |
21588 | but it may be block-scoped. */ | |
804d2729 | 21589 | list_to_add |
c24bdb02 KS |
21590 | = ((cu->list_in_scope |
21591 | == cu->get_builder ()->get_file_symbols ()) | |
21592 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21593 | : cu->list_in_scope); |
1c809c68 | 21594 | } |
c906108c | 21595 | else |
e37fd15a | 21596 | list_to_add = cu->list_in_scope; |
c906108c SS |
21597 | } |
21598 | else | |
21599 | { | |
21600 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21601 | If it is an external symbol and we have type information |
21602 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21603 | The address of the variable will then be determined from | |
21604 | the minimal symbol table whenever the variable is | |
21605 | referenced. */ | |
e142c38c | 21606 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21607 | |
21608 | /* Fortran explicitly imports any global symbols to the local | |
21609 | scope by DW_TAG_common_block. */ | |
21610 | if (cu->language == language_fortran && die->parent | |
21611 | && die->parent->tag == DW_TAG_common_block) | |
21612 | { | |
21613 | /* SYMBOL_CLASS doesn't matter here because | |
21614 | read_common_block is going to reset it. */ | |
21615 | if (!suppress_add) | |
21616 | list_to_add = cu->list_in_scope; | |
21617 | } | |
21618 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21619 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21620 | { |
0fe7935b DJ |
21621 | /* A variable with DW_AT_external is never static, but it |
21622 | may be block-scoped. */ | |
804d2729 | 21623 | list_to_add |
c24bdb02 KS |
21624 | = ((cu->list_in_scope |
21625 | == cu->get_builder ()->get_file_symbols ()) | |
21626 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21627 | : cu->list_in_scope); |
0fe7935b | 21628 | |
f1e6e072 | 21629 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21630 | } |
442ddf59 JK |
21631 | else if (!die_is_declaration (die, cu)) |
21632 | { | |
21633 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21634 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21635 | if (!suppress_add) |
21636 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21637 | } |
c906108c SS |
21638 | } |
21639 | break; | |
21640 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
21641 | { |
21642 | /* If we are inside a function, mark this as an argument. If | |
21643 | not, we might be looking at an argument to an inlined function | |
21644 | when we do not have enough information to show inlined frames; | |
21645 | pretend it's a local variable in that case so that the user can | |
21646 | still see it. */ | |
804d2729 | 21647 | struct context_stack *curr |
c24bdb02 | 21648 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
21649 | if (curr != nullptr && curr->name != nullptr) |
21650 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
21651 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 21652 | if (attr != nullptr) |
a60f3166 TT |
21653 | { |
21654 | var_decode_location (attr, sym, cu); | |
21655 | } | |
21656 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 21657 | if (attr != nullptr) |
a60f3166 TT |
21658 | { |
21659 | dwarf2_const_value (attr, sym, cu); | |
21660 | } | |
f346a30d | 21661 | |
a60f3166 TT |
21662 | list_to_add = cu->list_in_scope; |
21663 | } | |
c906108c SS |
21664 | break; |
21665 | case DW_TAG_unspecified_parameters: | |
21666 | /* From varargs functions; gdb doesn't seem to have any | |
21667 | interest in this information, so just ignore it for now. | |
21668 | (FIXME?) */ | |
21669 | break; | |
34eaf542 TT |
21670 | case DW_TAG_template_type_param: |
21671 | suppress_add = 1; | |
21672 | /* Fall through. */ | |
c906108c | 21673 | case DW_TAG_class_type: |
680b30c7 | 21674 | case DW_TAG_interface_type: |
c906108c SS |
21675 | case DW_TAG_structure_type: |
21676 | case DW_TAG_union_type: | |
72019c9c | 21677 | case DW_TAG_set_type: |
c906108c | 21678 | case DW_TAG_enumeration_type: |
f1e6e072 | 21679 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21680 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21681 | |
63d06c5c | 21682 | { |
9c37b5ae | 21683 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21684 | really ever be static objects: otherwise, if you try |
21685 | to, say, break of a class's method and you're in a file | |
21686 | which doesn't mention that class, it won't work unless | |
21687 | the check for all static symbols in lookup_symbol_aux | |
21688 | saves you. See the OtherFileClass tests in | |
21689 | gdb.c++/namespace.exp. */ | |
21690 | ||
e37fd15a | 21691 | if (!suppress_add) |
34eaf542 | 21692 | { |
c24bdb02 | 21693 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 21694 | list_to_add |
c24bdb02 | 21695 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 21696 | && cu->language == language_cplus |
c24bdb02 | 21697 | ? builder->get_global_symbols () |
804d2729 | 21698 | : cu->list_in_scope); |
63d06c5c | 21699 | |
64382290 | 21700 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21701 | ... }" also defines a typedef for "foo". */ |
64382290 | 21702 | if (cu->language == language_cplus |
45280282 | 21703 | || cu->language == language_ada |
c44af4eb TT |
21704 | || cu->language == language_d |
21705 | || cu->language == language_rust) | |
64382290 TT |
21706 | { |
21707 | /* The symbol's name is already allocated along | |
21708 | with this objfile, so we don't need to | |
21709 | duplicate it for the type. */ | |
7d93a1e0 | 21710 | if (SYMBOL_TYPE (sym)->name () == 0) |
d0e39ea2 | 21711 | SYMBOL_TYPE (sym)->set_name (sym->search_name ()); |
64382290 | 21712 | } |
63d06c5c DC |
21713 | } |
21714 | } | |
c906108c SS |
21715 | break; |
21716 | case DW_TAG_typedef: | |
f1e6e072 | 21717 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21718 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21719 | list_to_add = cu->list_in_scope; |
63d06c5c | 21720 | break; |
c906108c | 21721 | case DW_TAG_base_type: |
a02abb62 | 21722 | case DW_TAG_subrange_type: |
f1e6e072 | 21723 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21724 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21725 | list_to_add = cu->list_in_scope; |
c906108c SS |
21726 | break; |
21727 | case DW_TAG_enumerator: | |
e142c38c | 21728 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 21729 | if (attr != nullptr) |
c906108c | 21730 | { |
e7c27a73 | 21731 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21732 | } |
63d06c5c DC |
21733 | { |
21734 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21735 | DW_TAG_class_type, etc. block. */ | |
21736 | ||
804d2729 | 21737 | list_to_add |
c24bdb02 | 21738 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 21739 | && cu->language == language_cplus |
c24bdb02 | 21740 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 21741 | : cu->list_in_scope); |
63d06c5c | 21742 | } |
c906108c | 21743 | break; |
74921315 | 21744 | case DW_TAG_imported_declaration: |
5c4e30ca | 21745 | case DW_TAG_namespace: |
f1e6e072 | 21746 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 21747 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 21748 | break; |
530e8392 KB |
21749 | case DW_TAG_module: |
21750 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21751 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 21752 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 21753 | break; |
4357ac6c | 21754 | case DW_TAG_common_block: |
f1e6e072 | 21755 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 21756 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 21757 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 21758 | break; |
c906108c SS |
21759 | default: |
21760 | /* Not a tag we recognize. Hopefully we aren't processing | |
21761 | trash data, but since we must specifically ignore things | |
21762 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21763 | this point. */ |
b98664d3 | 21764 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 21765 | dwarf_tag_name (die->tag)); |
c906108c SS |
21766 | break; |
21767 | } | |
df8a16a1 | 21768 | |
e37fd15a SW |
21769 | if (suppress_add) |
21770 | { | |
21771 | sym->hash_next = objfile->template_symbols; | |
21772 | objfile->template_symbols = sym; | |
21773 | list_to_add = NULL; | |
21774 | } | |
21775 | ||
21776 | if (list_to_add != NULL) | |
d3cb6808 | 21777 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 21778 | |
df8a16a1 DJ |
21779 | /* For the benefit of old versions of GCC, check for anonymous |
21780 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21781 | if (!cu->processing_has_namespace_info |
94af9270 | 21782 | && cu->language == language_cplus) |
c24bdb02 | 21783 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
21784 | } |
21785 | return (sym); | |
21786 | } | |
21787 | ||
98bfdba5 PA |
21788 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21789 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21790 | standard (v4) is not entirely clear about the meaning of using | |
21791 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21792 | wider than the data. The conclusion of a discussion on the DWARF | |
21793 | list was that this is unspecified. We choose to always zero-extend | |
21794 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21795 | |
98bfdba5 | 21796 | static gdb_byte * |
ff39bb5e | 21797 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21798 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21799 | { |
5e22e966 | 21800 | struct objfile *objfile = cu->per_objfile->objfile; |
e17a4113 UW |
21801 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21802 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21803 | LONGEST l = DW_UNSND (attr); |
21804 | ||
21805 | if (bits < sizeof (*value) * 8) | |
21806 | { | |
21807 | l &= ((LONGEST) 1 << bits) - 1; | |
21808 | *value = l; | |
21809 | } | |
21810 | else if (bits == sizeof (*value) * 8) | |
21811 | *value = l; | |
21812 | else | |
21813 | { | |
224c3ddb | 21814 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21815 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21816 | return bytes; | |
21817 | } | |
21818 | ||
21819 | return NULL; | |
21820 | } | |
21821 | ||
21822 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21823 | the value does not fit in *VALUE, set *BYTES - either already | |
21824 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21825 | or, set *BATON, if we translated the constant to a location | |
21826 | expression. */ | |
21827 | ||
21828 | static void | |
ff39bb5e | 21829 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21830 | const char *name, struct obstack *obstack, |
21831 | struct dwarf2_cu *cu, | |
d521ce57 | 21832 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21833 | struct dwarf2_locexpr_baton **baton) |
21834 | { | |
5e22e966 | 21835 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 21836 | struct objfile *objfile = per_objfile->objfile; |
98bfdba5 | 21837 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21838 | struct dwarf_block *blk; |
98bfdba5 PA |
21839 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21840 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21841 | ||
21842 | *value = 0; | |
21843 | *bytes = NULL; | |
21844 | *baton = NULL; | |
c906108c SS |
21845 | |
21846 | switch (attr->form) | |
21847 | { | |
21848 | case DW_FORM_addr: | |
336d760d | 21849 | case DW_FORM_addrx: |
3019eac3 | 21850 | case DW_FORM_GNU_addr_index: |
ac56253d | 21851 | { |
ac56253d TT |
21852 | gdb_byte *data; |
21853 | ||
98bfdba5 PA |
21854 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21855 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21856 | cu_header->addr_size, |
98bfdba5 | 21857 | TYPE_LENGTH (type)); |
ac56253d TT |
21858 | /* Symbols of this form are reasonably rare, so we just |
21859 | piggyback on the existing location code rather than writing | |
21860 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21861 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
a50264ba | 21862 | (*baton)->per_objfile = per_objfile; |
98bfdba5 PA |
21863 | (*baton)->per_cu = cu->per_cu; |
21864 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21865 | |
98bfdba5 | 21866 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21867 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21868 | (*baton)->data = data; |
ac56253d TT |
21869 | |
21870 | data[0] = DW_OP_addr; | |
21871 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
36d378cf | 21872 | byte_order, attr->as_address ()); |
ac56253d | 21873 | data[cu_header->addr_size + 1] = DW_OP_stack_value; |
ac56253d | 21874 | } |
c906108c | 21875 | break; |
4ac36638 | 21876 | case DW_FORM_string: |
93b5768b | 21877 | case DW_FORM_strp: |
cf532bd1 | 21878 | case DW_FORM_strx: |
3019eac3 | 21879 | case DW_FORM_GNU_str_index: |
36586728 | 21880 | case DW_FORM_GNU_strp_alt: |
c6481205 | 21881 | /* The string is already allocated on the objfile obstack, point |
98bfdba5 | 21882 | directly to it. */ |
2c830f54 | 21883 | *bytes = (const gdb_byte *) attr->as_string (); |
93b5768b | 21884 | break; |
c906108c SS |
21885 | case DW_FORM_block1: |
21886 | case DW_FORM_block2: | |
21887 | case DW_FORM_block4: | |
21888 | case DW_FORM_block: | |
2dc7f7b3 | 21889 | case DW_FORM_exprloc: |
0224619f | 21890 | case DW_FORM_data16: |
9d2246fc | 21891 | blk = attr->as_block (); |
98bfdba5 PA |
21892 | if (TYPE_LENGTH (type) != blk->size) |
21893 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21894 | TYPE_LENGTH (type)); | |
21895 | *bytes = blk->data; | |
c906108c | 21896 | break; |
2df3850c JM |
21897 | |
21898 | /* The DW_AT_const_value attributes are supposed to carry the | |
21899 | symbol's value "represented as it would be on the target | |
21900 | architecture." By the time we get here, it's already been | |
21901 | converted to host endianness, so we just need to sign- or | |
21902 | zero-extend it as appropriate. */ | |
21903 | case DW_FORM_data1: | |
3aef2284 | 21904 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21905 | break; |
c906108c | 21906 | case DW_FORM_data2: |
3aef2284 | 21907 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21908 | break; |
c906108c | 21909 | case DW_FORM_data4: |
3aef2284 | 21910 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21911 | break; |
c906108c | 21912 | case DW_FORM_data8: |
3aef2284 | 21913 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21914 | break; |
21915 | ||
c906108c | 21916 | case DW_FORM_sdata: |
663c44ac | 21917 | case DW_FORM_implicit_const: |
1bc397c5 | 21918 | *value = attr->as_signed (); |
2df3850c JM |
21919 | break; |
21920 | ||
c906108c | 21921 | case DW_FORM_udata: |
98bfdba5 | 21922 | *value = DW_UNSND (attr); |
c906108c | 21923 | break; |
2df3850c | 21924 | |
c906108c | 21925 | default: |
b98664d3 | 21926 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21927 | dwarf_form_name (attr->form)); |
98bfdba5 | 21928 | *value = 0; |
c906108c SS |
21929 | break; |
21930 | } | |
21931 | } | |
21932 | ||
2df3850c | 21933 | |
98bfdba5 PA |
21934 | /* Copy constant value from an attribute to a symbol. */ |
21935 | ||
2df3850c | 21936 | static void |
ff39bb5e | 21937 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21938 | struct dwarf2_cu *cu) |
2df3850c | 21939 | { |
5e22e966 | 21940 | struct objfile *objfile = cu->per_objfile->objfile; |
12df843f | 21941 | LONGEST value; |
d521ce57 | 21942 | const gdb_byte *bytes; |
98bfdba5 | 21943 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21944 | |
98bfdba5 | 21945 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 21946 | sym->print_name (), |
98bfdba5 PA |
21947 | &objfile->objfile_obstack, cu, |
21948 | &value, &bytes, &baton); | |
2df3850c | 21949 | |
98bfdba5 PA |
21950 | if (baton != NULL) |
21951 | { | |
98bfdba5 | 21952 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21953 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21954 | } |
21955 | else if (bytes != NULL) | |
21956 | { | |
21957 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21958 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21959 | } |
21960 | else | |
21961 | { | |
21962 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21963 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21964 | } |
2df3850c JM |
21965 | } |
21966 | ||
c906108c SS |
21967 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21968 | ||
21969 | static struct type * | |
e7c27a73 | 21970 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21971 | { |
c906108c | 21972 | struct attribute *type_attr; |
c906108c | 21973 | |
e142c38c | 21974 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21975 | if (!type_attr) |
21976 | { | |
5e22e966 | 21977 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 21978 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21979 | return objfile_type (objfile)->builtin_void; |
c906108c | 21980 | } |
348e048f | 21981 | |
673bfd45 | 21982 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21983 | } |
21984 | ||
b4ba55a1 JB |
21985 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21986 | that allows to find parallel types through that information instead | |
21987 | of having to do expensive parallel lookups by type name. */ | |
21988 | ||
21989 | static int | |
21990 | need_gnat_info (struct dwarf2_cu *cu) | |
21991 | { | |
de4cb04a JB |
21992 | /* Assume that the Ada compiler was GNAT, which always produces |
21993 | the auxiliary information. */ | |
21994 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21995 | } |
21996 | ||
b4ba55a1 JB |
21997 | /* Return the auxiliary type of the die in question using its |
21998 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21999 | attribute is not present. */ | |
22000 | ||
22001 | static struct type * | |
22002 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
22003 | { | |
b4ba55a1 | 22004 | struct attribute *type_attr; |
b4ba55a1 JB |
22005 | |
22006 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
22007 | if (!type_attr) | |
22008 | return NULL; | |
22009 | ||
673bfd45 | 22010 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
22011 | } |
22012 | ||
22013 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
22014 | descriptive type accordingly. */ | |
22015 | ||
22016 | static void | |
22017 | set_descriptive_type (struct type *type, struct die_info *die, | |
22018 | struct dwarf2_cu *cu) | |
22019 | { | |
22020 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
22021 | ||
22022 | if (descriptive_type) | |
22023 | { | |
22024 | ALLOCATE_GNAT_AUX_TYPE (type); | |
22025 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
22026 | } | |
22027 | } | |
22028 | ||
c906108c SS |
22029 | /* Return the containing type of the die in question using its |
22030 | DW_AT_containing_type attribute. */ | |
22031 | ||
22032 | static struct type * | |
e7c27a73 | 22033 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22034 | { |
c906108c | 22035 | struct attribute *type_attr; |
5e22e966 | 22036 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22037 | |
e142c38c | 22038 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
22039 | if (!type_attr) |
22040 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 22041 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 22042 | |
673bfd45 | 22043 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22044 | } |
22045 | ||
ac9ec31b DE |
22046 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
22047 | ||
22048 | static struct type * | |
22049 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
22050 | { | |
976ca316 SM |
22051 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22052 | struct objfile *objfile = per_objfile->objfile; | |
528e1572 | 22053 | char *saved; |
ac9ec31b | 22054 | |
528e1572 SM |
22055 | std::string message |
22056 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
22057 | objfile_name (objfile), | |
22058 | sect_offset_str (cu->header.sect_off), | |
22059 | sect_offset_str (die->sect_off)); | |
efba19b0 | 22060 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 22061 | |
19f392bc | 22062 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22063 | } |
22064 | ||
673bfd45 | 22065 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22066 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22067 | DW_AT_containing_type. | |
673bfd45 DE |
22068 | If there is no type substitute an error marker. */ |
22069 | ||
c906108c | 22070 | static struct type * |
ff39bb5e | 22071 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22072 | struct dwarf2_cu *cu) |
c906108c | 22073 | { |
976ca316 SM |
22074 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22075 | struct objfile *objfile = per_objfile->objfile; | |
f792889a DJ |
22076 | struct type *this_type; |
22077 | ||
ac9ec31b DE |
22078 | gdb_assert (attr->name == DW_AT_type |
22079 | || attr->name == DW_AT_GNAT_descriptive_type | |
22080 | || attr->name == DW_AT_containing_type); | |
22081 | ||
673bfd45 DE |
22082 | /* First see if we have it cached. */ |
22083 | ||
36586728 TT |
22084 | if (attr->form == DW_FORM_GNU_ref_alt) |
22085 | { | |
22086 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 22087 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 22088 | |
976ca316 SM |
22089 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, per_objfile); |
22090 | this_type = get_die_type_at_offset (sect_off, per_cu, per_objfile); | |
36586728 | 22091 | } |
cd6c91b4 | 22092 | else if (attr->form_is_ref ()) |
673bfd45 | 22093 | { |
0826b30a | 22094 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 22095 | |
976ca316 | 22096 | this_type = get_die_type_at_offset (sect_off, cu->per_cu, per_objfile); |
673bfd45 | 22097 | } |
55f1336d | 22098 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22099 | { |
630ed6b9 | 22100 | ULONGEST signature = attr->as_signature (); |
673bfd45 | 22101 | |
ac9ec31b | 22102 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22103 | } |
22104 | else | |
22105 | { | |
b98664d3 | 22106 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22107 | " at %s [in module %s]"), |
22108 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22109 | objfile_name (objfile)); |
ac9ec31b | 22110 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22111 | } |
22112 | ||
22113 | /* If not cached we need to read it in. */ | |
22114 | ||
22115 | if (this_type == NULL) | |
22116 | { | |
ac9ec31b | 22117 | struct die_info *type_die = NULL; |
673bfd45 DE |
22118 | struct dwarf2_cu *type_cu = cu; |
22119 | ||
cd6c91b4 | 22120 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22121 | type_die = follow_die_ref (die, attr, &type_cu); |
22122 | if (type_die == NULL) | |
22123 | return build_error_marker_type (cu, die); | |
22124 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22125 | from an inter-CU reference and the type's CU got expanded before |
22126 | ours. */ | |
ac9ec31b | 22127 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22128 | } |
22129 | ||
22130 | /* If we still don't have a type use an error marker. */ | |
22131 | ||
22132 | if (this_type == NULL) | |
ac9ec31b | 22133 | return build_error_marker_type (cu, die); |
673bfd45 | 22134 | |
f792889a | 22135 | return this_type; |
c906108c SS |
22136 | } |
22137 | ||
673bfd45 DE |
22138 | /* Return the type in DIE, CU. |
22139 | Returns NULL for invalid types. | |
22140 | ||
02142a6c | 22141 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22142 | and only reads the die in if necessary. |
22143 | ||
22144 | NOTE: This can be called when reading in partial or full symbols. */ | |
22145 | ||
f792889a | 22146 | static struct type * |
e7c27a73 | 22147 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22148 | { |
f792889a DJ |
22149 | struct type *this_type; |
22150 | ||
22151 | this_type = get_die_type (die, cu); | |
22152 | if (this_type) | |
22153 | return this_type; | |
22154 | ||
673bfd45 DE |
22155 | return read_type_die_1 (die, cu); |
22156 | } | |
22157 | ||
22158 | /* Read the type in DIE, CU. | |
22159 | Returns NULL for invalid types. */ | |
22160 | ||
22161 | static struct type * | |
22162 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22163 | { | |
22164 | struct type *this_type = NULL; | |
22165 | ||
c906108c SS |
22166 | switch (die->tag) |
22167 | { | |
22168 | case DW_TAG_class_type: | |
680b30c7 | 22169 | case DW_TAG_interface_type: |
c906108c SS |
22170 | case DW_TAG_structure_type: |
22171 | case DW_TAG_union_type: | |
f792889a | 22172 | this_type = read_structure_type (die, cu); |
c906108c SS |
22173 | break; |
22174 | case DW_TAG_enumeration_type: | |
f792889a | 22175 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22176 | break; |
22177 | case DW_TAG_subprogram: | |
22178 | case DW_TAG_subroutine_type: | |
edb3359d | 22179 | case DW_TAG_inlined_subroutine: |
f792889a | 22180 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22181 | break; |
22182 | case DW_TAG_array_type: | |
f792889a | 22183 | this_type = read_array_type (die, cu); |
c906108c | 22184 | break; |
72019c9c | 22185 | case DW_TAG_set_type: |
f792889a | 22186 | this_type = read_set_type (die, cu); |
72019c9c | 22187 | break; |
c906108c | 22188 | case DW_TAG_pointer_type: |
f792889a | 22189 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22190 | break; |
22191 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22192 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22193 | break; |
22194 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22195 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22196 | break; | |
22197 | case DW_TAG_rvalue_reference_type: | |
22198 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22199 | break; |
22200 | case DW_TAG_const_type: | |
f792889a | 22201 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22202 | break; |
22203 | case DW_TAG_volatile_type: | |
f792889a | 22204 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22205 | break; |
06d66ee9 TT |
22206 | case DW_TAG_restrict_type: |
22207 | this_type = read_tag_restrict_type (die, cu); | |
22208 | break; | |
c906108c | 22209 | case DW_TAG_string_type: |
f792889a | 22210 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22211 | break; |
22212 | case DW_TAG_typedef: | |
f792889a | 22213 | this_type = read_typedef (die, cu); |
c906108c | 22214 | break; |
a02abb62 | 22215 | case DW_TAG_subrange_type: |
f792889a | 22216 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22217 | break; |
c906108c | 22218 | case DW_TAG_base_type: |
f792889a | 22219 | this_type = read_base_type (die, cu); |
c906108c | 22220 | break; |
81a17f79 | 22221 | case DW_TAG_unspecified_type: |
f792889a | 22222 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22223 | break; |
0114d602 DJ |
22224 | case DW_TAG_namespace: |
22225 | this_type = read_namespace_type (die, cu); | |
22226 | break; | |
f55ee35c JK |
22227 | case DW_TAG_module: |
22228 | this_type = read_module_type (die, cu); | |
22229 | break; | |
a2c2acaf MW |
22230 | case DW_TAG_atomic_type: |
22231 | this_type = read_tag_atomic_type (die, cu); | |
22232 | break; | |
c906108c | 22233 | default: |
b98664d3 | 22234 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 22235 | dwarf_tag_name (die->tag)); |
c906108c SS |
22236 | break; |
22237 | } | |
63d06c5c | 22238 | |
f792889a | 22239 | return this_type; |
63d06c5c DC |
22240 | } |
22241 | ||
abc72ce4 DE |
22242 | /* See if we can figure out if the class lives in a namespace. We do |
22243 | this by looking for a member function; its demangled name will | |
22244 | contain namespace info, if there is any. | |
22245 | Return the computed name or NULL. | |
22246 | Space for the result is allocated on the objfile's obstack. | |
22247 | This is the full-die version of guess_partial_die_structure_name. | |
22248 | In this case we know DIE has no useful parent. */ | |
22249 | ||
43816ebc | 22250 | static const char * |
abc72ce4 DE |
22251 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
22252 | { | |
22253 | struct die_info *spec_die; | |
22254 | struct dwarf2_cu *spec_cu; | |
22255 | struct die_info *child; | |
5e22e966 | 22256 | struct objfile *objfile = cu->per_objfile->objfile; |
abc72ce4 DE |
22257 | |
22258 | spec_cu = cu; | |
22259 | spec_die = die_specification (die, &spec_cu); | |
22260 | if (spec_die != NULL) | |
22261 | { | |
22262 | die = spec_die; | |
22263 | cu = spec_cu; | |
22264 | } | |
22265 | ||
22266 | for (child = die->child; | |
22267 | child != NULL; | |
22268 | child = child->sibling) | |
22269 | { | |
22270 | if (child->tag == DW_TAG_subprogram) | |
22271 | { | |
73b9be8b | 22272 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22273 | |
7d45c7c3 | 22274 | if (linkage_name != NULL) |
abc72ce4 | 22275 | { |
43816ebc | 22276 | gdb::unique_xmalloc_ptr<char> actual_name |
eff93b4d | 22277 | (cu->language_defn->class_name_from_physname (linkage_name)); |
43816ebc | 22278 | const char *name = NULL; |
abc72ce4 DE |
22279 | |
22280 | if (actual_name != NULL) | |
22281 | { | |
15d034d0 | 22282 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22283 | |
22284 | if (die_name != NULL | |
43816ebc | 22285 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
22286 | { |
22287 | /* Strip off the class name from the full name. | |
22288 | We want the prefix. */ | |
22289 | int die_name_len = strlen (die_name); | |
43816ebc TT |
22290 | int actual_name_len = strlen (actual_name.get ()); |
22291 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
22292 | |
22293 | /* Test for '::' as a sanity check. */ | |
22294 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 22295 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 22296 | name = obstack_strndup ( |
e3b94546 | 22297 | &objfile->per_bfd->storage_obstack, |
43816ebc | 22298 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22299 | } |
22300 | } | |
abc72ce4 DE |
22301 | return name; |
22302 | } | |
22303 | } | |
22304 | } | |
22305 | ||
22306 | return NULL; | |
22307 | } | |
22308 | ||
96408a79 SA |
22309 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22310 | prefix part in such case. See | |
22311 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22312 | ||
a121b7c1 | 22313 | static const char * |
96408a79 SA |
22314 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22315 | { | |
22316 | struct attribute *attr; | |
e6a959d6 | 22317 | const char *base; |
96408a79 SA |
22318 | |
22319 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22320 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22321 | return NULL; | |
22322 | ||
7d45c7c3 | 22323 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22324 | return NULL; |
22325 | ||
73b9be8b | 22326 | attr = dw2_linkage_name_attr (die, cu); |
2c830f54 TT |
22327 | const char *attr_name = attr->as_string (); |
22328 | if (attr == NULL || attr_name == NULL) | |
96408a79 SA |
22329 | return NULL; |
22330 | ||
22331 | /* dwarf2_name had to be already called. */ | |
3b64bf15 | 22332 | gdb_assert (attr->canonical_string_p ()); |
96408a79 SA |
22333 | |
22334 | /* Strip the base name, keep any leading namespaces/classes. */ | |
2c830f54 TT |
22335 | base = strrchr (attr_name, ':'); |
22336 | if (base == NULL || base == attr_name || base[-1] != ':') | |
96408a79 SA |
22337 | return ""; |
22338 | ||
5e22e966 | 22339 | struct objfile *objfile = cu->per_objfile->objfile; |
0cf9feb9 | 22340 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
2c830f54 TT |
22341 | attr_name, |
22342 | &base[-1] - attr_name); | |
96408a79 SA |
22343 | } |
22344 | ||
fdde2d81 | 22345 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22346 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22347 | |
0114d602 DJ |
22348 | For example, if we're within the method foo() in the following |
22349 | code: | |
22350 | ||
22351 | namespace N { | |
22352 | class C { | |
22353 | void foo () { | |
22354 | } | |
22355 | }; | |
22356 | } | |
22357 | ||
22358 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22359 | |
0d5cff50 | 22360 | static const char * |
e142c38c | 22361 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22362 | { |
976ca316 | 22363 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
0114d602 DJ |
22364 | struct die_info *parent, *spec_die; |
22365 | struct dwarf2_cu *spec_cu; | |
22366 | struct type *parent_type; | |
a121b7c1 | 22367 | const char *retval; |
63d06c5c | 22368 | |
9c37b5ae | 22369 | if (cu->language != language_cplus |
c44af4eb TT |
22370 | && cu->language != language_fortran && cu->language != language_d |
22371 | && cu->language != language_rust) | |
0114d602 DJ |
22372 | return ""; |
22373 | ||
96408a79 SA |
22374 | retval = anonymous_struct_prefix (die, cu); |
22375 | if (retval) | |
22376 | return retval; | |
22377 | ||
0114d602 DJ |
22378 | /* We have to be careful in the presence of DW_AT_specification. |
22379 | For example, with GCC 3.4, given the code | |
22380 | ||
22381 | namespace N { | |
22382 | void foo() { | |
22383 | // Definition of N::foo. | |
22384 | } | |
22385 | } | |
22386 | ||
22387 | then we'll have a tree of DIEs like this: | |
22388 | ||
22389 | 1: DW_TAG_compile_unit | |
22390 | 2: DW_TAG_namespace // N | |
22391 | 3: DW_TAG_subprogram // declaration of N::foo | |
22392 | 4: DW_TAG_subprogram // definition of N::foo | |
22393 | DW_AT_specification // refers to die #3 | |
22394 | ||
22395 | Thus, when processing die #4, we have to pretend that we're in | |
22396 | the context of its DW_AT_specification, namely the contex of die | |
22397 | #3. */ | |
22398 | spec_cu = cu; | |
22399 | spec_die = die_specification (die, &spec_cu); | |
22400 | if (spec_die == NULL) | |
22401 | parent = die->parent; | |
22402 | else | |
63d06c5c | 22403 | { |
0114d602 DJ |
22404 | parent = spec_die->parent; |
22405 | cu = spec_cu; | |
63d06c5c | 22406 | } |
0114d602 DJ |
22407 | |
22408 | if (parent == NULL) | |
22409 | return ""; | |
98bfdba5 PA |
22410 | else if (parent->building_fullname) |
22411 | { | |
22412 | const char *name; | |
22413 | const char *parent_name; | |
22414 | ||
22415 | /* It has been seen on RealView 2.2 built binaries, | |
22416 | DW_TAG_template_type_param types actually _defined_ as | |
22417 | children of the parent class: | |
22418 | ||
22419 | enum E {}; | |
22420 | template class <class Enum> Class{}; | |
22421 | Class<enum E> class_e; | |
22422 | ||
22423 | 1: DW_TAG_class_type (Class) | |
22424 | 2: DW_TAG_enumeration_type (E) | |
22425 | 3: DW_TAG_enumerator (enum1:0) | |
22426 | 3: DW_TAG_enumerator (enum2:1) | |
22427 | ... | |
22428 | 2: DW_TAG_template_type_param | |
22429 | DW_AT_type DW_FORM_ref_udata (E) | |
22430 | ||
22431 | Besides being broken debug info, it can put GDB into an | |
22432 | infinite loop. Consider: | |
22433 | ||
22434 | When we're building the full name for Class<E>, we'll start | |
22435 | at Class, and go look over its template type parameters, | |
22436 | finding E. We'll then try to build the full name of E, and | |
22437 | reach here. We're now trying to build the full name of E, | |
22438 | and look over the parent DIE for containing scope. In the | |
22439 | broken case, if we followed the parent DIE of E, we'd again | |
22440 | find Class, and once again go look at its template type | |
22441 | arguments, etc., etc. Simply don't consider such parent die | |
22442 | as source-level parent of this die (it can't be, the language | |
22443 | doesn't allow it), and break the loop here. */ | |
22444 | name = dwarf2_name (die, cu); | |
22445 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 22446 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
22447 | name ? name : "<unknown>", |
22448 | parent_name ? parent_name : "<unknown>"); | |
22449 | return ""; | |
22450 | } | |
63d06c5c | 22451 | else |
0114d602 DJ |
22452 | switch (parent->tag) |
22453 | { | |
63d06c5c | 22454 | case DW_TAG_namespace: |
0114d602 | 22455 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22456 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22457 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22458 | Work around this problem here. */ | |
22459 | if (cu->language == language_cplus | |
7d93a1e0 | 22460 | && strcmp (parent_type->name (), "::") == 0) |
acebe513 | 22461 | return ""; |
0114d602 | 22462 | /* We give a name to even anonymous namespaces. */ |
7d93a1e0 | 22463 | return parent_type->name (); |
63d06c5c | 22464 | case DW_TAG_class_type: |
680b30c7 | 22465 | case DW_TAG_interface_type: |
63d06c5c | 22466 | case DW_TAG_structure_type: |
0114d602 | 22467 | case DW_TAG_union_type: |
f55ee35c | 22468 | case DW_TAG_module: |
0114d602 | 22469 | parent_type = read_type_die (parent, cu); |
7d93a1e0 SM |
22470 | if (parent_type->name () != NULL) |
22471 | return parent_type->name (); | |
0114d602 DJ |
22472 | else |
22473 | /* An anonymous structure is only allowed non-static data | |
22474 | members; no typedefs, no member functions, et cetera. | |
22475 | So it does not need a prefix. */ | |
22476 | return ""; | |
abc72ce4 | 22477 | case DW_TAG_compile_unit: |
95554aad | 22478 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22479 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22480 | if (cu->language == language_cplus | |
976ca316 | 22481 | && !per_objfile->per_bfd->types.empty () |
abc72ce4 DE |
22482 | && die->child != NULL |
22483 | && (die->tag == DW_TAG_class_type | |
22484 | || die->tag == DW_TAG_structure_type | |
22485 | || die->tag == DW_TAG_union_type)) | |
22486 | { | |
43816ebc | 22487 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
22488 | if (name != NULL) |
22489 | return name; | |
22490 | } | |
22491 | return ""; | |
0a4b0913 AB |
22492 | case DW_TAG_subprogram: |
22493 | /* Nested subroutines in Fortran get a prefix with the name | |
22494 | of the parent's subroutine. */ | |
22495 | if (cu->language == language_fortran) | |
22496 | { | |
22497 | if ((die->tag == DW_TAG_subprogram) | |
22498 | && (dwarf2_name (parent, cu) != NULL)) | |
22499 | return dwarf2_name (parent, cu); | |
22500 | } | |
22501 | return determine_prefix (parent, cu); | |
3d567982 TT |
22502 | case DW_TAG_enumeration_type: |
22503 | parent_type = read_type_die (parent, cu); | |
22504 | if (TYPE_DECLARED_CLASS (parent_type)) | |
22505 | { | |
7d93a1e0 SM |
22506 | if (parent_type->name () != NULL) |
22507 | return parent_type->name (); | |
3d567982 TT |
22508 | return ""; |
22509 | } | |
22510 | /* Fall through. */ | |
63d06c5c | 22511 | default: |
8176b9b8 | 22512 | return determine_prefix (parent, cu); |
63d06c5c | 22513 | } |
63d06c5c DC |
22514 | } |
22515 | ||
3e43a32a MS |
22516 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22517 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22518 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22519 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22520 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22521 | |
f55ee35c | 22522 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22523 | |
22524 | static char * | |
f55ee35c JK |
22525 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
22526 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 22527 | { |
f55ee35c | 22528 | const char *lead = ""; |
5c315b68 | 22529 | const char *sep; |
63d06c5c | 22530 | |
3e43a32a MS |
22531 | if (suffix == NULL || suffix[0] == '\0' |
22532 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22533 | sep = ""; |
45280282 IB |
22534 | else if (cu->language == language_d) |
22535 | { | |
22536 | /* For D, the 'main' function could be defined in any module, but it | |
22537 | should never be prefixed. */ | |
22538 | if (strcmp (suffix, "D main") == 0) | |
22539 | { | |
22540 | prefix = ""; | |
22541 | sep = ""; | |
22542 | } | |
22543 | else | |
22544 | sep = "."; | |
22545 | } | |
f55ee35c JK |
22546 | else if (cu->language == language_fortran && physname) |
22547 | { | |
22548 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22549 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22550 | ||
22551 | lead = "__"; | |
22552 | sep = "_MOD_"; | |
22553 | } | |
987504bb JJ |
22554 | else |
22555 | sep = "::"; | |
63d06c5c | 22556 | |
6dd47d34 DE |
22557 | if (prefix == NULL) |
22558 | prefix = ""; | |
22559 | if (suffix == NULL) | |
22560 | suffix = ""; | |
22561 | ||
987504bb JJ |
22562 | if (obs == NULL) |
22563 | { | |
3e43a32a | 22564 | char *retval |
224c3ddb SM |
22565 | = ((char *) |
22566 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22567 | |
f55ee35c JK |
22568 | strcpy (retval, lead); |
22569 | strcat (retval, prefix); | |
6dd47d34 DE |
22570 | strcat (retval, sep); |
22571 | strcat (retval, suffix); | |
63d06c5c DC |
22572 | return retval; |
22573 | } | |
987504bb JJ |
22574 | else |
22575 | { | |
22576 | /* We have an obstack. */ | |
f55ee35c | 22577 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22578 | } |
63d06c5c DC |
22579 | } |
22580 | ||
71c25dea TT |
22581 | /* Get name of a die, return NULL if not found. */ |
22582 | ||
15d034d0 TT |
22583 | static const char * |
22584 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 22585 | struct objfile *objfile) |
71c25dea TT |
22586 | { |
22587 | if (name && cu->language == language_cplus) | |
22588 | { | |
596dc4ad TT |
22589 | gdb::unique_xmalloc_ptr<char> canon_name |
22590 | = cp_canonicalize_string (name); | |
71c25dea | 22591 | |
596dc4ad TT |
22592 | if (canon_name != nullptr) |
22593 | name = objfile->intern (canon_name.get ()); | |
71c25dea TT |
22594 | } |
22595 | ||
22596 | return name; | |
c906108c SS |
22597 | } |
22598 | ||
96553a0c DE |
22599 | /* Get name of a die, return NULL if not found. |
22600 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22601 | |
15d034d0 | 22602 | static const char * |
e142c38c | 22603 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22604 | { |
22605 | struct attribute *attr; | |
5e22e966 | 22606 | struct objfile *objfile = cu->per_objfile->objfile; |
9219021c | 22607 | |
e142c38c | 22608 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2c830f54 TT |
22609 | const char *attr_name = attr == nullptr ? nullptr : attr->as_string (); |
22610 | if (attr_name == nullptr | |
96553a0c | 22611 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22612 | && die->tag != DW_TAG_class_type |
22613 | && die->tag != DW_TAG_interface_type | |
22614 | && die->tag != DW_TAG_structure_type | |
22615 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22616 | return NULL; |
22617 | ||
22618 | switch (die->tag) | |
22619 | { | |
22620 | case DW_TAG_compile_unit: | |
95554aad | 22621 | case DW_TAG_partial_unit: |
71c25dea TT |
22622 | /* Compilation units have a DW_AT_name that is a filename, not |
22623 | a source language identifier. */ | |
22624 | case DW_TAG_enumeration_type: | |
22625 | case DW_TAG_enumerator: | |
22626 | /* These tags always have simple identifiers already; no need | |
22627 | to canonicalize them. */ | |
2c830f54 | 22628 | return attr_name; |
907af001 | 22629 | |
96553a0c | 22630 | case DW_TAG_namespace: |
2c830f54 TT |
22631 | if (attr_name != nullptr) |
22632 | return attr_name; | |
96553a0c DE |
22633 | return CP_ANONYMOUS_NAMESPACE_STR; |
22634 | ||
907af001 UW |
22635 | case DW_TAG_class_type: |
22636 | case DW_TAG_interface_type: | |
22637 | case DW_TAG_structure_type: | |
22638 | case DW_TAG_union_type: | |
22639 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22640 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22641 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22642 | and GCC 4.4. We work around this problem by ignoring these. */ | |
2c830f54 TT |
22643 | if (attr_name != nullptr |
22644 | && (startswith (attr_name, "._") | |
22645 | || startswith (attr_name, "<anonymous"))) | |
907af001 | 22646 | return NULL; |
53832f31 TT |
22647 | |
22648 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22649 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
2c830f54 | 22650 | if (!attr || attr_name == NULL) |
53832f31 | 22651 | { |
73b9be8b | 22652 | attr = dw2_linkage_name_attr (die, cu); |
2c830f54 | 22653 | if (attr == NULL || attr_name == NULL) |
53832f31 TT |
22654 | return NULL; |
22655 | ||
2c830f54 | 22656 | /* Avoid demangling attr_name the second time on a second |
df5c6c50 | 22657 | call for the same DIE. */ |
3b64bf15 | 22658 | if (!attr->canonical_string_p ()) |
53832f31 | 22659 | { |
43816ebc | 22660 | gdb::unique_xmalloc_ptr<char> demangled |
2c830f54 | 22661 | (gdb_demangle (attr_name, DMGL_TYPES)); |
4f180d53 AT |
22662 | if (demangled == nullptr) |
22663 | return nullptr; | |
43816ebc | 22664 | |
c6481205 | 22665 | attr->set_string_canonical (objfile->intern (demangled.get ())); |
53832f31 | 22666 | } |
67430cd0 | 22667 | |
2c830f54 TT |
22668 | /* Strip any leading namespaces/classes, keep only the |
22669 | base name. DW_AT_name for named DIEs does not | |
22670 | contain the prefixes. */ | |
22671 | const char *base = strrchr (attr_name, ':'); | |
22672 | if (base && base > attr_name && base[-1] == ':') | |
67430cd0 TT |
22673 | return &base[1]; |
22674 | else | |
2c830f54 | 22675 | return attr_name; |
53832f31 | 22676 | } |
907af001 UW |
22677 | break; |
22678 | ||
71c25dea | 22679 | default: |
907af001 UW |
22680 | break; |
22681 | } | |
22682 | ||
3b64bf15 | 22683 | if (!attr->canonical_string_p ()) |
c6481205 TT |
22684 | attr->set_string_canonical (dwarf2_canonicalize_name (attr_name, cu, |
22685 | objfile)); | |
2c830f54 | 22686 | return attr->as_string (); |
9219021c DC |
22687 | } |
22688 | ||
22689 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22690 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22691 | containing the return value on output. */ | |
9219021c DC |
22692 | |
22693 | static struct die_info * | |
f2f0e013 | 22694 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22695 | { |
22696 | struct attribute *attr; | |
9219021c | 22697 | |
f2f0e013 | 22698 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22699 | if (attr == NULL) |
22700 | return NULL; | |
22701 | ||
f2f0e013 | 22702 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22703 | } |
22704 | ||
f9aca02d | 22705 | static void |
d97bc12b | 22706 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22707 | { |
22708 | unsigned int i; | |
22709 | ||
d97bc12b | 22710 | print_spaces (indent, f); |
9d8780f0 | 22711 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 22712 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 22713 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
22714 | |
22715 | if (die->parent != NULL) | |
22716 | { | |
22717 | print_spaces (indent, f); | |
9d8780f0 SM |
22718 | fprintf_unfiltered (f, " parent at offset: %s\n", |
22719 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
22720 | } |
22721 | ||
22722 | print_spaces (indent, f); | |
22723 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22724 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22725 | |
d97bc12b DE |
22726 | print_spaces (indent, f); |
22727 | fprintf_unfiltered (f, " attributes:\n"); | |
22728 | ||
c906108c SS |
22729 | for (i = 0; i < die->num_attrs; ++i) |
22730 | { | |
d97bc12b DE |
22731 | print_spaces (indent, f); |
22732 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22733 | dwarf_attr_name (die->attrs[i].name), |
22734 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22735 | |
c906108c SS |
22736 | switch (die->attrs[i].form) |
22737 | { | |
c906108c | 22738 | case DW_FORM_addr: |
336d760d | 22739 | case DW_FORM_addrx: |
3019eac3 | 22740 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22741 | fprintf_unfiltered (f, "address: "); |
36d378cf | 22742 | fputs_filtered (hex_string (die->attrs[i].as_address ()), f); |
c906108c SS |
22743 | break; |
22744 | case DW_FORM_block2: | |
22745 | case DW_FORM_block4: | |
22746 | case DW_FORM_block: | |
22747 | case DW_FORM_block1: | |
56eb65bd | 22748 | fprintf_unfiltered (f, "block: size %s", |
9d2246fc | 22749 | pulongest (die->attrs[i].as_block ()->size)); |
c906108c | 22750 | break; |
2dc7f7b3 | 22751 | case DW_FORM_exprloc: |
56eb65bd | 22752 | fprintf_unfiltered (f, "expression: size %s", |
9d2246fc | 22753 | pulongest (die->attrs[i].as_block ()->size)); |
2dc7f7b3 | 22754 | break; |
0224619f JK |
22755 | case DW_FORM_data16: |
22756 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22757 | break; | |
4568ecf9 DE |
22758 | case DW_FORM_ref_addr: |
22759 | fprintf_unfiltered (f, "ref address: "); | |
22760 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22761 | break; | |
36586728 TT |
22762 | case DW_FORM_GNU_ref_alt: |
22763 | fprintf_unfiltered (f, "alt ref address: "); | |
22764 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22765 | break; | |
10b3939b DJ |
22766 | case DW_FORM_ref1: |
22767 | case DW_FORM_ref2: | |
22768 | case DW_FORM_ref4: | |
4568ecf9 DE |
22769 | case DW_FORM_ref8: |
22770 | case DW_FORM_ref_udata: | |
d97bc12b | 22771 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22772 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22773 | break; |
c906108c SS |
22774 | case DW_FORM_data1: |
22775 | case DW_FORM_data2: | |
22776 | case DW_FORM_data4: | |
ce5d95e1 | 22777 | case DW_FORM_data8: |
c906108c | 22778 | case DW_FORM_udata: |
43bbcdc2 PH |
22779 | fprintf_unfiltered (f, "constant: %s", |
22780 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22781 | break; |
2dc7f7b3 TT |
22782 | case DW_FORM_sec_offset: |
22783 | fprintf_unfiltered (f, "section offset: %s", | |
22784 | pulongest (DW_UNSND (&die->attrs[i]))); | |
22785 | break; | |
55f1336d | 22786 | case DW_FORM_ref_sig8: |
ac9ec31b | 22787 | fprintf_unfiltered (f, "signature: %s", |
630ed6b9 | 22788 | hex_string (die->attrs[i].as_signature ())); |
348e048f | 22789 | break; |
c906108c | 22790 | case DW_FORM_string: |
4bdf3d34 | 22791 | case DW_FORM_strp: |
43988095 | 22792 | case DW_FORM_line_strp: |
cf532bd1 | 22793 | case DW_FORM_strx: |
3019eac3 | 22794 | case DW_FORM_GNU_str_index: |
36586728 | 22795 | case DW_FORM_GNU_strp_alt: |
8285870a | 22796 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c6481205 TT |
22797 | die->attrs[i].as_string () |
22798 | ? die->attrs[i].as_string () : "", | |
22799 | die->attrs[i].canonical_string_p () ? "is" : "not"); | |
c906108c SS |
22800 | break; |
22801 | case DW_FORM_flag: | |
22802 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 22803 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 22804 | else |
d97bc12b | 22805 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 22806 | break; |
2dc7f7b3 TT |
22807 | case DW_FORM_flag_present: |
22808 | fprintf_unfiltered (f, "flag: TRUE"); | |
22809 | break; | |
a8329558 | 22810 | case DW_FORM_indirect: |
0963b4bd MS |
22811 | /* The reader will have reduced the indirect form to |
22812 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 22813 | fprintf_unfiltered (f, |
3e43a32a | 22814 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 22815 | break; |
1bc397c5 | 22816 | case DW_FORM_sdata: |
663c44ac JK |
22817 | case DW_FORM_implicit_const: |
22818 | fprintf_unfiltered (f, "constant: %s", | |
1bc397c5 | 22819 | plongest (die->attrs[i].as_signed ())); |
663c44ac | 22820 | break; |
c906108c | 22821 | default: |
d97bc12b | 22822 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22823 | die->attrs[i].form); |
d97bc12b | 22824 | break; |
c906108c | 22825 | } |
d97bc12b | 22826 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22827 | } |
22828 | } | |
22829 | ||
f9aca02d | 22830 | static void |
d97bc12b | 22831 | dump_die_for_error (struct die_info *die) |
c906108c | 22832 | { |
d97bc12b DE |
22833 | dump_die_shallow (gdb_stderr, 0, die); |
22834 | } | |
22835 | ||
22836 | static void | |
22837 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22838 | { | |
22839 | int indent = level * 4; | |
22840 | ||
22841 | gdb_assert (die != NULL); | |
22842 | ||
22843 | if (level >= max_level) | |
22844 | return; | |
22845 | ||
22846 | dump_die_shallow (f, indent, die); | |
22847 | ||
22848 | if (die->child != NULL) | |
c906108c | 22849 | { |
d97bc12b DE |
22850 | print_spaces (indent, f); |
22851 | fprintf_unfiltered (f, " Children:"); | |
22852 | if (level + 1 < max_level) | |
22853 | { | |
22854 | fprintf_unfiltered (f, "\n"); | |
22855 | dump_die_1 (f, level + 1, max_level, die->child); | |
22856 | } | |
22857 | else | |
22858 | { | |
3e43a32a MS |
22859 | fprintf_unfiltered (f, |
22860 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22861 | } |
22862 | } | |
22863 | ||
22864 | if (die->sibling != NULL && level > 0) | |
22865 | { | |
22866 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22867 | } |
22868 | } | |
22869 | ||
d97bc12b DE |
22870 | /* This is called from the pdie macro in gdbinit.in. |
22871 | It's not static so gcc will keep a copy callable from gdb. */ | |
22872 | ||
22873 | void | |
22874 | dump_die (struct die_info *die, int max_level) | |
22875 | { | |
22876 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22877 | } | |
22878 | ||
f9aca02d | 22879 | static void |
51545339 | 22880 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22881 | { |
51545339 | 22882 | void **slot; |
c906108c | 22883 | |
9c541725 PA |
22884 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22885 | to_underlying (die->sect_off), | |
b64f50a1 | 22886 | INSERT); |
51545339 DJ |
22887 | |
22888 | *slot = die; | |
c906108c SS |
22889 | } |
22890 | ||
348e048f DE |
22891 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22892 | On entry *REF_CU is the CU of SRC_DIE. | |
22893 | On exit *REF_CU is the CU of the result. */ | |
22894 | ||
22895 | static struct die_info * | |
ff39bb5e | 22896 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22897 | struct dwarf2_cu **ref_cu) |
22898 | { | |
22899 | struct die_info *die; | |
22900 | ||
cd6c91b4 | 22901 | if (attr->form_is_ref ()) |
348e048f | 22902 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22903 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22904 | die = follow_die_sig (src_die, attr, ref_cu); |
22905 | else | |
22906 | { | |
22907 | dump_die_for_error (src_die); | |
22908 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
5e22e966 | 22909 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
348e048f DE |
22910 | } |
22911 | ||
22912 | return die; | |
03dd20cc DJ |
22913 | } |
22914 | ||
5c631832 | 22915 | /* Follow reference OFFSET. |
673bfd45 DE |
22916 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22917 | On exit *REF_CU is the CU of the result. | |
22918 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22919 | |
f9aca02d | 22920 | static struct die_info * |
9c541725 | 22921 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22922 | struct dwarf2_cu **ref_cu) |
c906108c | 22923 | { |
10b3939b | 22924 | struct die_info temp_die; |
f2f0e013 | 22925 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
976ca316 | 22926 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10b3939b | 22927 | |
348e048f DE |
22928 | gdb_assert (cu->per_cu != NULL); |
22929 | ||
98bfdba5 PA |
22930 | target_cu = cu; |
22931 | ||
3019eac3 | 22932 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22933 | { |
22934 | /* .debug_types CUs cannot reference anything outside their CU. | |
22935 | If they need to, they have to reference a signatured type via | |
55f1336d | 22936 | DW_FORM_ref_sig8. */ |
4057dfde | 22937 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 22938 | return NULL; |
348e048f | 22939 | } |
36586728 | 22940 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 22941 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
22942 | { |
22943 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22944 | |
9c541725 | 22945 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
976ca316 | 22946 | per_objfile); |
03dd20cc DJ |
22947 | |
22948 | /* If necessary, add it to the queue and load its DIEs. */ | |
976ca316 SM |
22949 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
22950 | load_full_comp_unit (per_cu, per_objfile, false, cu->language); | |
03dd20cc | 22951 | |
976ca316 | 22952 | target_cu = per_objfile->get_cu (per_cu); |
10b3939b | 22953 | } |
98bfdba5 PA |
22954 | else if (cu->dies == NULL) |
22955 | { | |
22956 | /* We're loading full DIEs during partial symbol reading. */ | |
976ca316 SM |
22957 | gdb_assert (per_objfile->per_bfd->reading_partial_symbols); |
22958 | load_full_comp_unit (cu->per_cu, per_objfile, false, language_minimal); | |
98bfdba5 | 22959 | } |
c906108c | 22960 | |
f2f0e013 | 22961 | *ref_cu = target_cu; |
9c541725 | 22962 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
22963 | |
22964 | if (target_cu != cu) | |
22965 | target_cu->ancestor = cu; | |
22966 | ||
9a3c8263 | 22967 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
22968 | &temp_die, |
22969 | to_underlying (sect_off)); | |
5c631832 | 22970 | } |
10b3939b | 22971 | |
5c631832 JK |
22972 | /* Follow reference attribute ATTR of SRC_DIE. |
22973 | On entry *REF_CU is the CU of SRC_DIE. | |
22974 | On exit *REF_CU is the CU of the result. */ | |
22975 | ||
22976 | static struct die_info * | |
ff39bb5e | 22977 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
22978 | struct dwarf2_cu **ref_cu) |
22979 | { | |
0826b30a | 22980 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
22981 | struct dwarf2_cu *cu = *ref_cu; |
22982 | struct die_info *die; | |
22983 | ||
9c541725 | 22984 | die = follow_die_offset (sect_off, |
36586728 TT |
22985 | (attr->form == DW_FORM_GNU_ref_alt |
22986 | || cu->per_cu->is_dwz), | |
22987 | ref_cu); | |
5c631832 | 22988 | if (!die) |
9d8780f0 SM |
22989 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
22990 | "at %s [in module %s]"), | |
22991 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22992 | objfile_name (cu->per_objfile->objfile)); |
348e048f | 22993 | |
5c631832 JK |
22994 | return die; |
22995 | } | |
22996 | ||
d4c9a4f8 | 22997 | /* See read.h. */ |
5c631832 JK |
22998 | |
22999 | struct dwarf2_locexpr_baton | |
9c541725 | 23000 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 23001 | dwarf2_per_cu_data *per_cu, |
976ca316 | 23002 | dwarf2_per_objfile *per_objfile, |
041d9819 SM |
23003 | gdb::function_view<CORE_ADDR ()> get_frame_pc, |
23004 | bool resolve_abstract_p) | |
5c631832 | 23005 | { |
5c631832 JK |
23006 | struct die_info *die; |
23007 | struct attribute *attr; | |
23008 | struct dwarf2_locexpr_baton retval; | |
976ca316 | 23009 | struct objfile *objfile = per_objfile->objfile; |
8cf6f0b1 | 23010 | |
976ca316 | 23011 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 | 23012 | if (cu == nullptr) |
976ca316 | 23013 | cu = load_cu (per_cu, per_objfile, false); |
1b555f17 SM |
23014 | |
23015 | if (cu == nullptr) | |
cc12ce38 DE |
23016 | { |
23017 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23018 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23019 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23020 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23021 | } |
918dd910 | 23022 | |
9c541725 | 23023 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23024 | if (!die) |
9d8780f0 SM |
23025 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23026 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23027 | |
23028 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 23029 | if (!attr && resolve_abstract_p |
976ca316 SM |
23030 | && (per_objfile->per_bfd->abstract_to_concrete.find (die->sect_off) |
23031 | != per_objfile->per_bfd->abstract_to_concrete.end ())) | |
e4a62c65 | 23032 | { |
041d9819 | 23033 | CORE_ADDR pc = get_frame_pc (); |
b3b3bada | 23034 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 23035 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 23036 | |
3360b6e7 | 23037 | for (const auto &cand_off |
976ca316 | 23038 | : per_objfile->per_bfd->abstract_to_concrete[die->sect_off]) |
e4a62c65 | 23039 | { |
3360b6e7 TV |
23040 | struct dwarf2_cu *cand_cu = cu; |
23041 | struct die_info *cand | |
23042 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
23043 | if (!cand | |
23044 | || !cand->parent | |
e4a62c65 TV |
23045 | || cand->parent->tag != DW_TAG_subprogram) |
23046 | continue; | |
23047 | ||
23048 | CORE_ADDR pc_low, pc_high; | |
23049 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
23050 | if (pc_low == ((CORE_ADDR) -1)) |
23051 | continue; | |
23052 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
23053 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
23054 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
23055 | continue; |
23056 | ||
23057 | die = cand; | |
23058 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23059 | break; | |
23060 | } | |
23061 | } | |
23062 | ||
5c631832 JK |
23063 | if (!attr) |
23064 | { | |
e103e986 JK |
23065 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23066 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23067 | |
e103e986 | 23068 | retval.data = NULL; |
5c631832 JK |
23069 | retval.size = 0; |
23070 | } | |
cd6c91b4 | 23071 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
23072 | { |
23073 | struct dwarf2_loclist_baton loclist_baton; | |
041d9819 | 23074 | CORE_ADDR pc = get_frame_pc (); |
8cf6f0b1 TT |
23075 | size_t size; |
23076 | ||
23077 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23078 | ||
23079 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23080 | &size, pc); | |
23081 | retval.size = size; | |
23082 | } | |
5c631832 JK |
23083 | else |
23084 | { | |
4fc6c0d5 | 23085 | if (!attr->form_is_block ()) |
9d8780f0 | 23086 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23087 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23088 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 | 23089 | |
9d2246fc TT |
23090 | struct dwarf_block *block = attr->as_block (); |
23091 | retval.data = block->data; | |
23092 | retval.size = block->size; | |
5c631832 | 23093 | } |
976ca316 | 23094 | retval.per_objfile = per_objfile; |
5c631832 | 23095 | retval.per_cu = cu->per_cu; |
918dd910 | 23096 | |
976ca316 | 23097 | per_objfile->age_comp_units (); |
918dd910 | 23098 | |
5c631832 | 23099 | return retval; |
348e048f DE |
23100 | } |
23101 | ||
d4c9a4f8 | 23102 | /* See read.h. */ |
8b9737bf TT |
23103 | |
23104 | struct dwarf2_locexpr_baton | |
23105 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 23106 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23107 | dwarf2_per_objfile *per_objfile, |
041d9819 | 23108 | gdb::function_view<CORE_ADDR ()> get_frame_pc) |
8b9737bf | 23109 | { |
9c541725 | 23110 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23111 | |
14095eb3 | 23112 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, per_objfile, |
041d9819 | 23113 | get_frame_pc); |
8b9737bf TT |
23114 | } |
23115 | ||
b6807d98 TT |
23116 | /* Write a constant of a given type as target-ordered bytes into |
23117 | OBSTACK. */ | |
23118 | ||
23119 | static const gdb_byte * | |
23120 | write_constant_as_bytes (struct obstack *obstack, | |
23121 | enum bfd_endian byte_order, | |
23122 | struct type *type, | |
23123 | ULONGEST value, | |
23124 | LONGEST *len) | |
23125 | { | |
23126 | gdb_byte *result; | |
23127 | ||
23128 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23129 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23130 | store_unsigned_integer (result, *len, byte_order, value); |
23131 | ||
23132 | return result; | |
23133 | } | |
23134 | ||
d4c9a4f8 | 23135 | /* See read.h. */ |
b6807d98 TT |
23136 | |
23137 | const gdb_byte * | |
9c541725 | 23138 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 | 23139 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23140 | dwarf2_per_objfile *per_objfile, |
d4c9a4f8 | 23141 | obstack *obstack, |
b6807d98 TT |
23142 | LONGEST *len) |
23143 | { | |
b6807d98 TT |
23144 | struct die_info *die; |
23145 | struct attribute *attr; | |
23146 | const gdb_byte *result = NULL; | |
23147 | struct type *type; | |
23148 | LONGEST value; | |
23149 | enum bfd_endian byte_order; | |
14095eb3 | 23150 | struct objfile *objfile = per_objfile->objfile; |
b6807d98 | 23151 | |
7188ed02 | 23152 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
23153 | if (cu == nullptr) |
23154 | cu = load_cu (per_cu, per_objfile, false); | |
23155 | ||
23156 | if (cu == nullptr) | |
cc12ce38 DE |
23157 | { |
23158 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23159 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23160 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23161 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23162 | } |
b6807d98 | 23163 | |
9c541725 | 23164 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23165 | if (!die) |
9d8780f0 SM |
23166 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23167 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23168 | |
23169 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23170 | if (attr == NULL) | |
23171 | return NULL; | |
23172 | ||
e3b94546 | 23173 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23174 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23175 | ||
23176 | switch (attr->form) | |
23177 | { | |
23178 | case DW_FORM_addr: | |
336d760d | 23179 | case DW_FORM_addrx: |
b6807d98 TT |
23180 | case DW_FORM_GNU_addr_index: |
23181 | { | |
23182 | gdb_byte *tem; | |
23183 | ||
23184 | *len = cu->header.addr_size; | |
224c3ddb | 23185 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
36d378cf | 23186 | store_unsigned_integer (tem, *len, byte_order, attr->as_address ()); |
b6807d98 TT |
23187 | result = tem; |
23188 | } | |
23189 | break; | |
23190 | case DW_FORM_string: | |
23191 | case DW_FORM_strp: | |
cf532bd1 | 23192 | case DW_FORM_strx: |
b6807d98 TT |
23193 | case DW_FORM_GNU_str_index: |
23194 | case DW_FORM_GNU_strp_alt: | |
c6481205 | 23195 | /* The string is already allocated on the objfile obstack, point |
b6807d98 | 23196 | directly to it. */ |
2c830f54 TT |
23197 | { |
23198 | const char *attr_name = attr->as_string (); | |
23199 | result = (const gdb_byte *) attr_name; | |
23200 | *len = strlen (attr_name); | |
23201 | } | |
b6807d98 TT |
23202 | break; |
23203 | case DW_FORM_block1: | |
23204 | case DW_FORM_block2: | |
23205 | case DW_FORM_block4: | |
23206 | case DW_FORM_block: | |
23207 | case DW_FORM_exprloc: | |
0224619f | 23208 | case DW_FORM_data16: |
9d2246fc TT |
23209 | { |
23210 | struct dwarf_block *block = attr->as_block (); | |
23211 | result = block->data; | |
23212 | *len = block->size; | |
23213 | } | |
b6807d98 TT |
23214 | break; |
23215 | ||
23216 | /* The DW_AT_const_value attributes are supposed to carry the | |
23217 | symbol's value "represented as it would be on the target | |
23218 | architecture." By the time we get here, it's already been | |
23219 | converted to host endianness, so we just need to sign- or | |
23220 | zero-extend it as appropriate. */ | |
23221 | case DW_FORM_data1: | |
23222 | type = die_type (die, cu); | |
23223 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23224 | if (result == NULL) | |
23225 | result = write_constant_as_bytes (obstack, byte_order, | |
23226 | type, value, len); | |
23227 | break; | |
23228 | case DW_FORM_data2: | |
23229 | type = die_type (die, cu); | |
23230 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23231 | if (result == NULL) | |
23232 | result = write_constant_as_bytes (obstack, byte_order, | |
23233 | type, value, len); | |
23234 | break; | |
23235 | case DW_FORM_data4: | |
23236 | type = die_type (die, cu); | |
23237 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23238 | if (result == NULL) | |
23239 | result = write_constant_as_bytes (obstack, byte_order, | |
23240 | type, value, len); | |
23241 | break; | |
23242 | case DW_FORM_data8: | |
23243 | type = die_type (die, cu); | |
23244 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23245 | if (result == NULL) | |
23246 | result = write_constant_as_bytes (obstack, byte_order, | |
23247 | type, value, len); | |
23248 | break; | |
23249 | ||
23250 | case DW_FORM_sdata: | |
663c44ac | 23251 | case DW_FORM_implicit_const: |
b6807d98 TT |
23252 | type = die_type (die, cu); |
23253 | result = write_constant_as_bytes (obstack, byte_order, | |
1bc397c5 | 23254 | type, attr->as_signed (), len); |
b6807d98 TT |
23255 | break; |
23256 | ||
23257 | case DW_FORM_udata: | |
23258 | type = die_type (die, cu); | |
23259 | result = write_constant_as_bytes (obstack, byte_order, | |
23260 | type, DW_UNSND (attr), len); | |
23261 | break; | |
23262 | ||
23263 | default: | |
b98664d3 | 23264 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23265 | dwarf_form_name (attr->form)); |
23266 | break; | |
23267 | } | |
23268 | ||
23269 | return result; | |
23270 | } | |
23271 | ||
d4c9a4f8 | 23272 | /* See read.h. */ |
7942e96e AA |
23273 | |
23274 | struct type * | |
9c541725 | 23275 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
14095eb3 SM |
23276 | dwarf2_per_cu_data *per_cu, |
23277 | dwarf2_per_objfile *per_objfile) | |
7942e96e | 23278 | { |
7942e96e AA |
23279 | struct die_info *die; |
23280 | ||
7188ed02 | 23281 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
23282 | if (cu == nullptr) |
23283 | cu = load_cu (per_cu, per_objfile, false); | |
23284 | ||
23285 | if (cu == nullptr) | |
23286 | return nullptr; | |
7942e96e | 23287 | |
9c541725 | 23288 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23289 | if (!die) |
23290 | return NULL; | |
23291 | ||
23292 | return die_type (die, cu); | |
23293 | } | |
23294 | ||
8cb5117c | 23295 | /* See read.h. */ |
8a9b8146 TT |
23296 | |
23297 | struct type * | |
b64f50a1 | 23298 | dwarf2_get_die_type (cu_offset die_offset, |
aa66c379 SM |
23299 | dwarf2_per_cu_data *per_cu, |
23300 | dwarf2_per_objfile *per_objfile) | |
8a9b8146 | 23301 | { |
9c541725 | 23302 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
aa66c379 | 23303 | return get_die_type_at_offset (die_offset_sect, per_cu, per_objfile); |
8a9b8146 TT |
23304 | } |
23305 | ||
ac9ec31b | 23306 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23307 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23308 | On exit *REF_CU is the CU of the result. |
23309 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23310 | |
23311 | static struct die_info * | |
ac9ec31b DE |
23312 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23313 | struct dwarf2_cu **ref_cu) | |
348e048f | 23314 | { |
348e048f | 23315 | struct die_info temp_die; |
c24bdb02 | 23316 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f | 23317 | struct die_info *die; |
976ca316 | 23318 | dwarf2_per_objfile *per_objfile = (*ref_cu)->per_objfile; |
120ce1b5 | 23319 | |
348e048f | 23320 | |
ac9ec31b DE |
23321 | /* While it might be nice to assert sig_type->type == NULL here, |
23322 | we can get here for DW_AT_imported_declaration where we need | |
23323 | the DIE not the type. */ | |
348e048f DE |
23324 | |
23325 | /* If necessary, add it to the queue and load its DIEs. */ | |
23326 | ||
976ca316 | 23327 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, per_objfile, |
120ce1b5 | 23328 | language_minimal)) |
976ca316 | 23329 | read_signatured_type (sig_type, per_objfile); |
348e048f | 23330 | |
976ca316 | 23331 | sig_cu = per_objfile->get_cu (&sig_type->per_cu); |
69d751e3 | 23332 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23333 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23334 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23335 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23336 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23337 | if (die) |
23338 | { | |
796a7ff8 DE |
23339 | /* For .gdb_index version 7 keep track of included TUs. |
23340 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
976ca316 SM |
23341 | if (per_objfile->per_bfd->index_table != NULL |
23342 | && per_objfile->per_bfd->index_table->version <= 7) | |
796a7ff8 | 23343 | { |
ae640021 | 23344 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
23345 | } |
23346 | ||
348e048f | 23347 | *ref_cu = sig_cu; |
c24bdb02 KS |
23348 | if (sig_cu != cu) |
23349 | sig_cu->ancestor = cu; | |
23350 | ||
348e048f DE |
23351 | return die; |
23352 | } | |
23353 | ||
ac9ec31b DE |
23354 | return NULL; |
23355 | } | |
23356 | ||
23357 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23358 | On entry *REF_CU is the CU of SRC_DIE. | |
23359 | On exit *REF_CU is the CU of the result. | |
23360 | The result is the DIE of the type. | |
23361 | If the referenced type cannot be found an error is thrown. */ | |
23362 | ||
23363 | static struct die_info * | |
ff39bb5e | 23364 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23365 | struct dwarf2_cu **ref_cu) |
23366 | { | |
630ed6b9 | 23367 | ULONGEST signature = attr->as_signature (); |
ac9ec31b DE |
23368 | struct signatured_type *sig_type; |
23369 | struct die_info *die; | |
23370 | ||
23371 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23372 | ||
a2ce51a0 | 23373 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23374 | /* sig_type will be NULL if the signatured type is missing from |
23375 | the debug info. */ | |
23376 | if (sig_type == NULL) | |
23377 | { | |
23378 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23379 | " from DIE at %s [in module %s]"), |
23380 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23381 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
23382 | } |
23383 | ||
23384 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23385 | if (die == NULL) | |
23386 | { | |
23387 | dump_die_for_error (src_die); | |
23388 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23389 | " from DIE at %s [in module %s]"), |
23390 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23391 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
23392 | } |
23393 | ||
23394 | return die; | |
23395 | } | |
23396 | ||
23397 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23398 | reading in and processing the type unit if necessary. */ | |
23399 | ||
23400 | static struct type * | |
23401 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23402 | struct dwarf2_cu *cu) | |
23403 | { | |
976ca316 | 23404 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ac9ec31b DE |
23405 | struct signatured_type *sig_type; |
23406 | struct dwarf2_cu *type_cu; | |
23407 | struct die_info *type_die; | |
23408 | struct type *type; | |
23409 | ||
a2ce51a0 | 23410 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23411 | /* sig_type will be NULL if the signatured type is missing from |
23412 | the debug info. */ | |
23413 | if (sig_type == NULL) | |
23414 | { | |
b98664d3 | 23415 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
23416 | " from DIE at %s [in module %s]"), |
23417 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 23418 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23419 | return build_error_marker_type (cu, die); |
23420 | } | |
23421 | ||
23422 | /* If we already know the type we're done. */ | |
976ca316 | 23423 | type = per_objfile->get_type_for_signatured_type (sig_type); |
e286671b TT |
23424 | if (type != nullptr) |
23425 | return type; | |
ac9ec31b DE |
23426 | |
23427 | type_cu = cu; | |
23428 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23429 | if (type_die != NULL) | |
23430 | { | |
23431 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23432 | is created. This is important, for example, because for c++ classes | |
23433 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23434 | type = read_type_die (type_die, type_cu); | |
23435 | if (type == NULL) | |
23436 | { | |
b98664d3 | 23437 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
23438 | " referenced from DIE at %s [in module %s]"), |
23439 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 23440 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23441 | type = build_error_marker_type (cu, die); |
23442 | } | |
23443 | } | |
23444 | else | |
23445 | { | |
b98664d3 | 23446 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
23447 | " from DIE at %s [in module %s]"), |
23448 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 23449 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23450 | type = build_error_marker_type (cu, die); |
23451 | } | |
e286671b | 23452 | |
976ca316 | 23453 | per_objfile->set_type_for_signatured_type (sig_type, type); |
ac9ec31b DE |
23454 | |
23455 | return type; | |
23456 | } | |
23457 | ||
23458 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23459 | reading in and processing the type unit if necessary. */ | |
23460 | ||
23461 | static struct type * | |
ff39bb5e | 23462 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23463 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23464 | { |
23465 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 23466 | if (attr->form_is_ref ()) |
ac9ec31b DE |
23467 | { |
23468 | struct dwarf2_cu *type_cu = cu; | |
23469 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23470 | ||
23471 | return read_type_die (type_die, type_cu); | |
23472 | } | |
23473 | else if (attr->form == DW_FORM_ref_sig8) | |
23474 | { | |
630ed6b9 | 23475 | return get_signatured_type (die, attr->as_signature (), cu); |
ac9ec31b DE |
23476 | } |
23477 | else | |
23478 | { | |
976ca316 | 23479 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 23480 | |
b98664d3 | 23481 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
23482 | " at %s [in module %s]"), |
23483 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
976ca316 | 23484 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23485 | return build_error_marker_type (cu, die); |
23486 | } | |
348e048f DE |
23487 | } |
23488 | ||
e5fe5e75 | 23489 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23490 | |
23491 | static void | |
ab432490 SM |
23492 | load_full_type_unit (dwarf2_per_cu_data *per_cu, |
23493 | dwarf2_per_objfile *per_objfile) | |
348e048f | 23494 | { |
52dc124a | 23495 | struct signatured_type *sig_type; |
348e048f | 23496 | |
f4dc4d17 | 23497 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 23498 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 23499 | |
6721b2ec DE |
23500 | /* We have the per_cu, but we need the signatured_type. |
23501 | Fortunately this is an easy translation. */ | |
23502 | gdb_assert (per_cu->is_debug_types); | |
23503 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23504 | |
7188ed02 | 23505 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 23506 | |
ab432490 | 23507 | read_signatured_type (sig_type, per_objfile); |
348e048f | 23508 | |
7188ed02 | 23509 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); |
348e048f DE |
23510 | } |
23511 | ||
3019eac3 DE |
23512 | /* Read in a signatured type and build its CU and DIEs. |
23513 | If the type is a stub for the real type in a DWO file, | |
23514 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23515 | |
23516 | static void | |
ab432490 SM |
23517 | read_signatured_type (signatured_type *sig_type, |
23518 | dwarf2_per_objfile *per_objfile) | |
dee91e82 DE |
23519 | { |
23520 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 23521 | |
3019eac3 | 23522 | gdb_assert (per_cu->is_debug_types); |
7188ed02 | 23523 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 23524 | |
2e671100 | 23525 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
23526 | |
23527 | if (!reader.dummy_p) | |
23528 | { | |
23529 | struct dwarf2_cu *cu = reader.cu; | |
23530 | const gdb_byte *info_ptr = reader.info_ptr; | |
23531 | ||
23532 | gdb_assert (cu->die_hash == NULL); | |
23533 | cu->die_hash = | |
23534 | htab_create_alloc_ex (cu->header.length / 12, | |
23535 | die_hash, | |
23536 | die_eq, | |
23537 | NULL, | |
23538 | &cu->comp_unit_obstack, | |
23539 | hashtab_obstack_allocate, | |
23540 | dummy_obstack_deallocate); | |
23541 | ||
3e225074 | 23542 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
23543 | reader.comp_unit_die->child |
23544 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
23545 | reader.comp_unit_die); | |
23546 | cu->dies = reader.comp_unit_die; | |
23547 | /* comp_unit_die is not stored in die_hash, no need. */ | |
23548 | ||
23549 | /* We try not to read any attributes in this function, because | |
23550 | not all CUs needed for references have been loaded yet, and | |
23551 | symbol table processing isn't initialized. But we have to | |
23552 | set the CU language, or we won't be able to build types | |
23553 | correctly. Similarly, if we do not read the producer, we can | |
23554 | not apply producer-specific interpretation. */ | |
23555 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
23556 | |
23557 | reader.keep (); | |
c0ab21c2 TT |
23558 | } |
23559 | ||
7ee85ab1 | 23560 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
23561 | } |
23562 | ||
c906108c SS |
23563 | /* Decode simple location descriptions. |
23564 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
23565 | the location and return the value. If COMPUTED is non-null, it is |
23566 | set to true to indicate that decoding was successful, and false | |
23567 | otherwise. If COMPUTED is null, then this function may emit a | |
23568 | complaint. */ | |
c906108c SS |
23569 | |
23570 | static CORE_ADDR | |
7d79de9a | 23571 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 23572 | { |
5e22e966 | 23573 | struct objfile *objfile = cu->per_objfile->objfile; |
56eb65bd SP |
23574 | size_t i; |
23575 | size_t size = blk->size; | |
d521ce57 | 23576 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
23577 | CORE_ADDR stack[64]; |
23578 | int stacki; | |
23579 | unsigned int bytes_read, unsnd; | |
23580 | gdb_byte op; | |
c906108c | 23581 | |
7d79de9a TT |
23582 | if (computed != nullptr) |
23583 | *computed = false; | |
23584 | ||
21ae7a4d JK |
23585 | i = 0; |
23586 | stacki = 0; | |
23587 | stack[stacki] = 0; | |
23588 | stack[++stacki] = 0; | |
23589 | ||
23590 | while (i < size) | |
23591 | { | |
23592 | op = data[i++]; | |
23593 | switch (op) | |
23594 | { | |
23595 | case DW_OP_lit0: | |
23596 | case DW_OP_lit1: | |
23597 | case DW_OP_lit2: | |
23598 | case DW_OP_lit3: | |
23599 | case DW_OP_lit4: | |
23600 | case DW_OP_lit5: | |
23601 | case DW_OP_lit6: | |
23602 | case DW_OP_lit7: | |
23603 | case DW_OP_lit8: | |
23604 | case DW_OP_lit9: | |
23605 | case DW_OP_lit10: | |
23606 | case DW_OP_lit11: | |
23607 | case DW_OP_lit12: | |
23608 | case DW_OP_lit13: | |
23609 | case DW_OP_lit14: | |
23610 | case DW_OP_lit15: | |
23611 | case DW_OP_lit16: | |
23612 | case DW_OP_lit17: | |
23613 | case DW_OP_lit18: | |
23614 | case DW_OP_lit19: | |
23615 | case DW_OP_lit20: | |
23616 | case DW_OP_lit21: | |
23617 | case DW_OP_lit22: | |
23618 | case DW_OP_lit23: | |
23619 | case DW_OP_lit24: | |
23620 | case DW_OP_lit25: | |
23621 | case DW_OP_lit26: | |
23622 | case DW_OP_lit27: | |
23623 | case DW_OP_lit28: | |
23624 | case DW_OP_lit29: | |
23625 | case DW_OP_lit30: | |
23626 | case DW_OP_lit31: | |
23627 | stack[++stacki] = op - DW_OP_lit0; | |
23628 | break; | |
f1bea926 | 23629 | |
21ae7a4d JK |
23630 | case DW_OP_reg0: |
23631 | case DW_OP_reg1: | |
23632 | case DW_OP_reg2: | |
23633 | case DW_OP_reg3: | |
23634 | case DW_OP_reg4: | |
23635 | case DW_OP_reg5: | |
23636 | case DW_OP_reg6: | |
23637 | case DW_OP_reg7: | |
23638 | case DW_OP_reg8: | |
23639 | case DW_OP_reg9: | |
23640 | case DW_OP_reg10: | |
23641 | case DW_OP_reg11: | |
23642 | case DW_OP_reg12: | |
23643 | case DW_OP_reg13: | |
23644 | case DW_OP_reg14: | |
23645 | case DW_OP_reg15: | |
23646 | case DW_OP_reg16: | |
23647 | case DW_OP_reg17: | |
23648 | case DW_OP_reg18: | |
23649 | case DW_OP_reg19: | |
23650 | case DW_OP_reg20: | |
23651 | case DW_OP_reg21: | |
23652 | case DW_OP_reg22: | |
23653 | case DW_OP_reg23: | |
23654 | case DW_OP_reg24: | |
23655 | case DW_OP_reg25: | |
23656 | case DW_OP_reg26: | |
23657 | case DW_OP_reg27: | |
23658 | case DW_OP_reg28: | |
23659 | case DW_OP_reg29: | |
23660 | case DW_OP_reg30: | |
23661 | case DW_OP_reg31: | |
23662 | stack[++stacki] = op - DW_OP_reg0; | |
23663 | if (i < size) | |
7d79de9a TT |
23664 | { |
23665 | if (computed == nullptr) | |
23666 | dwarf2_complex_location_expr_complaint (); | |
23667 | else | |
23668 | return 0; | |
23669 | } | |
21ae7a4d | 23670 | break; |
c906108c | 23671 | |
21ae7a4d JK |
23672 | case DW_OP_regx: |
23673 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
23674 | i += bytes_read; | |
23675 | stack[++stacki] = unsnd; | |
23676 | if (i < size) | |
7d79de9a TT |
23677 | { |
23678 | if (computed == nullptr) | |
23679 | dwarf2_complex_location_expr_complaint (); | |
23680 | else | |
23681 | return 0; | |
23682 | } | |
21ae7a4d | 23683 | break; |
c906108c | 23684 | |
21ae7a4d | 23685 | case DW_OP_addr: |
c8a7a66f TT |
23686 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
23687 | &bytes_read); | |
21ae7a4d JK |
23688 | i += bytes_read; |
23689 | break; | |
d53d4ac5 | 23690 | |
21ae7a4d JK |
23691 | case DW_OP_const1u: |
23692 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
23693 | i += 1; | |
23694 | break; | |
23695 | ||
23696 | case DW_OP_const1s: | |
23697 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
23698 | i += 1; | |
23699 | break; | |
23700 | ||
23701 | case DW_OP_const2u: | |
23702 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23703 | i += 2; | |
23704 | break; | |
23705 | ||
23706 | case DW_OP_const2s: | |
23707 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
23708 | i += 2; | |
23709 | break; | |
d53d4ac5 | 23710 | |
21ae7a4d JK |
23711 | case DW_OP_const4u: |
23712 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
23713 | i += 4; | |
23714 | break; | |
23715 | ||
23716 | case DW_OP_const4s: | |
23717 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
23718 | i += 4; | |
23719 | break; | |
23720 | ||
585861ea JK |
23721 | case DW_OP_const8u: |
23722 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
23723 | i += 8; | |
23724 | break; | |
23725 | ||
21ae7a4d JK |
23726 | case DW_OP_constu: |
23727 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
23728 | &bytes_read); | |
23729 | i += bytes_read; | |
23730 | break; | |
23731 | ||
23732 | case DW_OP_consts: | |
23733 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
23734 | i += bytes_read; | |
23735 | break; | |
23736 | ||
23737 | case DW_OP_dup: | |
23738 | stack[stacki + 1] = stack[stacki]; | |
23739 | stacki++; | |
23740 | break; | |
23741 | ||
23742 | case DW_OP_plus: | |
23743 | stack[stacki - 1] += stack[stacki]; | |
23744 | stacki--; | |
23745 | break; | |
23746 | ||
23747 | case DW_OP_plus_uconst: | |
23748 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
23749 | &bytes_read); | |
23750 | i += bytes_read; | |
23751 | break; | |
23752 | ||
23753 | case DW_OP_minus: | |
23754 | stack[stacki - 1] -= stack[stacki]; | |
23755 | stacki--; | |
23756 | break; | |
23757 | ||
23758 | case DW_OP_deref: | |
23759 | /* If we're not the last op, then we definitely can't encode | |
23760 | this using GDB's address_class enum. This is valid for partial | |
23761 | global symbols, although the variable's address will be bogus | |
23762 | in the psymtab. */ | |
23763 | if (i < size) | |
7d79de9a TT |
23764 | { |
23765 | if (computed == nullptr) | |
23766 | dwarf2_complex_location_expr_complaint (); | |
23767 | else | |
23768 | return 0; | |
23769 | } | |
21ae7a4d JK |
23770 | break; |
23771 | ||
23772 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 23773 | case DW_OP_form_tls_address: |
21ae7a4d JK |
23774 | /* The top of the stack has the offset from the beginning |
23775 | of the thread control block at which the variable is located. */ | |
23776 | /* Nothing should follow this operator, so the top of stack would | |
23777 | be returned. */ | |
23778 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
23779 | address will be bogus in the psymtab. Make it always at least |
23780 | non-zero to not look as a variable garbage collected by linker | |
23781 | which have DW_OP_addr 0. */ | |
21ae7a4d | 23782 | if (i < size) |
7d79de9a TT |
23783 | { |
23784 | if (computed == nullptr) | |
23785 | dwarf2_complex_location_expr_complaint (); | |
23786 | else | |
23787 | return 0; | |
23788 | } | |
585861ea | 23789 | stack[stacki]++; |
21ae7a4d JK |
23790 | break; |
23791 | ||
23792 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
23793 | if (computed != nullptr) |
23794 | return 0; | |
21ae7a4d JK |
23795 | break; |
23796 | ||
336d760d | 23797 | case DW_OP_addrx: |
3019eac3 | 23798 | case DW_OP_GNU_addr_index: |
49f6c839 | 23799 | case DW_OP_GNU_const_index: |
3019eac3 DE |
23800 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
23801 | &bytes_read); | |
23802 | i += bytes_read; | |
23803 | break; | |
23804 | ||
21ae7a4d | 23805 | default: |
7d79de9a TT |
23806 | if (computed == nullptr) |
23807 | { | |
23808 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 23809 | |
7d79de9a TT |
23810 | if (name) |
23811 | complaint (_("unsupported stack op: '%s'"), | |
23812 | name); | |
23813 | else | |
23814 | complaint (_("unsupported stack op: '%02x'"), | |
23815 | op); | |
23816 | } | |
21ae7a4d JK |
23817 | |
23818 | return (stack[stacki]); | |
d53d4ac5 | 23819 | } |
3c6e0cb3 | 23820 | |
21ae7a4d JK |
23821 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23822 | outside of the allocated space. Also enforce minimum>0. */ | |
23823 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23824 | { | |
7d79de9a TT |
23825 | if (computed == nullptr) |
23826 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
23827 | return 0; |
23828 | } | |
23829 | ||
23830 | if (stacki <= 0) | |
23831 | { | |
7d79de9a TT |
23832 | if (computed == nullptr) |
23833 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
23834 | return 0; |
23835 | } | |
23836 | } | |
7d79de9a TT |
23837 | |
23838 | if (computed != nullptr) | |
23839 | *computed = true; | |
21ae7a4d | 23840 | return (stack[stacki]); |
c906108c SS |
23841 | } |
23842 | ||
23843 | /* memory allocation interface */ | |
23844 | ||
c906108c | 23845 | static struct dwarf_block * |
7b5a2f43 | 23846 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23847 | { |
8d749320 | 23848 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23849 | } |
23850 | ||
c906108c | 23851 | static struct die_info * |
b60c80d6 | 23852 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23853 | { |
23854 | struct die_info *die; | |
b60c80d6 DJ |
23855 | size_t size = sizeof (struct die_info); |
23856 | ||
23857 | if (num_attrs > 1) | |
23858 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23859 | |
b60c80d6 | 23860 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23861 | memset (die, 0, sizeof (struct die_info)); |
23862 | return (die); | |
23863 | } | |
2e276125 JB |
23864 | |
23865 | \f | |
a036ba48 | 23866 | |
c90ec28a | 23867 | /* Macro support. */ |
cf2c3c16 | 23868 | |
9eac9650 TT |
23869 | /* An overload of dwarf_decode_macros that finds the correct section |
23870 | and ensures it is read in before calling the other overload. */ | |
23871 | ||
23872 | static void | |
23873 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
23874 | int section_is_gnu) | |
23875 | { | |
976ca316 SM |
23876 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
23877 | struct objfile *objfile = per_objfile->objfile; | |
5a0e026f | 23878 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
23879 | unsigned int offset_size = cu->header.offset_size; |
23880 | struct dwarf2_section_info *section; | |
23881 | const char *section_name; | |
23882 | ||
23883 | if (cu->dwo_unit != nullptr) | |
23884 | { | |
23885 | if (section_is_gnu) | |
23886 | { | |
23887 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
23888 | section_name = ".debug_macro.dwo"; | |
23889 | } | |
23890 | else | |
23891 | { | |
23892 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
23893 | section_name = ".debug_macinfo.dwo"; | |
23894 | } | |
23895 | } | |
23896 | else | |
23897 | { | |
23898 | if (section_is_gnu) | |
23899 | { | |
976ca316 | 23900 | section = &per_objfile->per_bfd->macro; |
9eac9650 TT |
23901 | section_name = ".debug_macro"; |
23902 | } | |
23903 | else | |
23904 | { | |
976ca316 | 23905 | section = &per_objfile->per_bfd->macinfo; |
9eac9650 TT |
23906 | section_name = ".debug_macinfo"; |
23907 | } | |
23908 | } | |
23909 | ||
23910 | section->read (objfile); | |
23911 | if (section->buffer == nullptr) | |
23912 | { | |
23913 | complaint (_("missing %s section"), section_name); | |
23914 | return; | |
23915 | } | |
23916 | ||
23917 | buildsym_compunit *builder = cu->get_builder (); | |
23918 | ||
976ca316 | 23919 | dwarf_decode_macros (per_objfile, builder, section, lh, |
9eac9650 TT |
23920 | offset_size, offset, section_is_gnu); |
23921 | } | |
23922 | ||
3019eac3 DE |
23923 | /* Return the .debug_loc section to use for CU. |
23924 | For DWO files use .debug_loc.dwo. */ | |
23925 | ||
23926 | static struct dwarf2_section_info * | |
23927 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
23928 | { | |
976ca316 | 23929 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 23930 | |
3019eac3 | 23931 | if (cu->dwo_unit) |
43988095 JK |
23932 | { |
23933 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 23934 | |
43988095 JK |
23935 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
23936 | } | |
976ca316 SM |
23937 | return (cu->header.version >= 5 ? &per_objfile->per_bfd->loclists |
23938 | : &per_objfile->per_bfd->loc); | |
3019eac3 DE |
23939 | } |
23940 | ||
d0ce17d8 CT |
23941 | /* Return the .debug_rnglists section to use for CU. */ |
23942 | static struct dwarf2_section_info * | |
23943 | cu_debug_rnglists_section (struct dwarf2_cu *cu, dwarf_tag tag) | |
23944 | { | |
23945 | if (cu->header.version < 5) | |
23946 | error (_(".debug_rnglists section cannot be used in DWARF %d"), | |
23947 | cu->header.version); | |
23948 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
23949 | ||
23950 | /* Make sure we read the .debug_rnglists section from the file that | |
23951 | contains the DW_AT_ranges attribute we are reading. Normally that | |
23952 | would be the .dwo file, if there is one. However for DW_TAG_compile_unit | |
23953 | or DW_TAG_skeleton unit, we always want to read from objfile/linked | |
23954 | program. */ | |
23955 | if (cu->dwo_unit != nullptr | |
23956 | && tag != DW_TAG_compile_unit | |
23957 | && tag != DW_TAG_skeleton_unit) | |
23958 | { | |
23959 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
23960 | ||
23961 | if (sections->rnglists.size > 0) | |
23962 | return §ions->rnglists; | |
23963 | else | |
23964 | error (_(".debug_rnglists section is missing from .dwo file.")); | |
23965 | } | |
23966 | return &dwarf2_per_objfile->per_bfd->rnglists; | |
23967 | } | |
23968 | ||
8cf6f0b1 TT |
23969 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
23970 | ||
23971 | static void | |
23972 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
23973 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 23974 | const struct attribute *attr) |
8cf6f0b1 | 23975 | { |
976ca316 | 23976 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 DE |
23977 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
23978 | ||
976ca316 | 23979 | section->read (per_objfile->objfile); |
8cf6f0b1 | 23980 | |
976ca316 | 23981 | baton->per_objfile = per_objfile; |
8cf6f0b1 TT |
23982 | baton->per_cu = cu->per_cu; |
23983 | gdb_assert (baton->per_cu); | |
23984 | /* We don't know how long the location list is, but make sure we | |
23985 | don't run off the edge of the section. */ | |
3019eac3 DE |
23986 | baton->size = section->size - DW_UNSND (attr); |
23987 | baton->data = section->buffer + DW_UNSND (attr); | |
2b24b6e4 TT |
23988 | if (cu->base_address.has_value ()) |
23989 | baton->base_address = *cu->base_address; | |
23990 | else | |
23991 | baton->base_address = 0; | |
f664829e | 23992 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
23993 | } |
23994 | ||
4c2df51b | 23995 | static void |
ff39bb5e | 23996 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 23997 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 23998 | { |
976ca316 SM |
23999 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24000 | struct objfile *objfile = per_objfile->objfile; | |
3019eac3 | 24001 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24002 | |
cd6c91b4 | 24003 | if (attr->form_is_section_offset () |
3019eac3 | 24004 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24005 | the section. If so, fall through to the complaint in the |
24006 | other branch. */ | |
2c7d5afc | 24007 | && DW_UNSND (attr) < section->get_size (objfile)) |
4c2df51b | 24008 | { |
0d53c4c4 | 24009 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24010 | |
8d749320 | 24011 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24012 | |
8cf6f0b1 | 24013 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24014 | |
2b24b6e4 | 24015 | if (!cu->base_address.has_value ()) |
b98664d3 | 24016 | complaint (_("Location list used without " |
3e43a32a | 24017 | "specifying the CU base address.")); |
4c2df51b | 24018 | |
f1e6e072 TT |
24019 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24020 | ? dwarf2_loclist_block_index | |
24021 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24022 | SYMBOL_LOCATION_BATON (sym) = baton; |
24023 | } | |
24024 | else | |
24025 | { | |
24026 | struct dwarf2_locexpr_baton *baton; | |
24027 | ||
8d749320 | 24028 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
976ca316 | 24029 | baton->per_objfile = per_objfile; |
ae0d2f24 UW |
24030 | baton->per_cu = cu->per_cu; |
24031 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 24032 | |
4fc6c0d5 | 24033 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
24034 | { |
24035 | /* Note that we're just copying the block's data pointer | |
24036 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24037 | info_buffer for SYM's objfile; right now we never release |
24038 | that buffer, but when we do clean up properly this may | |
24039 | need to change. */ | |
9d2246fc TT |
24040 | struct dwarf_block *block = attr->as_block (); |
24041 | baton->size = block->size; | |
24042 | baton->data = block->data; | |
0d53c4c4 DJ |
24043 | } |
24044 | else | |
24045 | { | |
24046 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 24047 | sym->natural_name ()); |
0d53c4c4 | 24048 | baton->size = 0; |
0d53c4c4 | 24049 | } |
6e70227d | 24050 | |
f1e6e072 TT |
24051 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24052 | ? dwarf2_locexpr_block_index | |
24053 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24054 | SYMBOL_LOCATION_BATON (sym) = baton; |
24055 | } | |
4c2df51b | 24056 | } |
6502dd73 | 24057 | |
2e6a9f79 | 24058 | /* See read.h. */ |
96408a79 | 24059 | |
2e6a9f79 SM |
24060 | const comp_unit_head * |
24061 | dwarf2_per_cu_data::get_header () const | |
96408a79 | 24062 | { |
2e6a9f79 SM |
24063 | if (!m_header_read_in) |
24064 | { | |
24065 | const gdb_byte *info_ptr | |
24066 | = this->section->buffer + to_underlying (this->sect_off); | |
96408a79 | 24067 | |
2e6a9f79 | 24068 | memset (&m_header, 0, sizeof (m_header)); |
96408a79 | 24069 | |
2e6a9f79 SM |
24070 | read_comp_unit_head (&m_header, info_ptr, this->section, |
24071 | rcuh_kind::COMPILE); | |
24072 | } | |
96408a79 | 24073 | |
2e6a9f79 | 24074 | return &m_header; |
96408a79 SA |
24075 | } |
24076 | ||
09ba997f | 24077 | /* See read.h. */ |
ae0d2f24 | 24078 | |
98714339 | 24079 | int |
09ba997f | 24080 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 24081 | { |
2e6a9f79 | 24082 | return this->get_header ()->addr_size; |
ae0d2f24 UW |
24083 | } |
24084 | ||
09ba997f | 24085 | /* See read.h. */ |
9eae7c52 TT |
24086 | |
24087 | int | |
09ba997f | 24088 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 24089 | { |
2e6a9f79 | 24090 | return this->get_header ()->offset_size; |
96408a79 SA |
24091 | } |
24092 | ||
09ba997f | 24093 | /* See read.h. */ |
96408a79 SA |
24094 | |
24095 | int | |
09ba997f | 24096 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 | 24097 | { |
2e6a9f79 | 24098 | const comp_unit_head *header = this->get_header (); |
96408a79 | 24099 | |
2e6a9f79 SM |
24100 | if (header->version == 2) |
24101 | return header->addr_size; | |
96408a79 | 24102 | else |
2e6a9f79 | 24103 | return header->offset_size; |
181cebd4 JK |
24104 | } |
24105 | ||
09ba997f | 24106 | /* See read.h. */ |
9aa1f1e3 | 24107 | |
09ba997f | 24108 | struct type * |
293e7e51 | 24109 | dwarf2_cu::addr_type () const |
9a49df9d | 24110 | { |
293e7e51 | 24111 | struct objfile *objfile = this->per_objfile->objfile; |
9a49df9d AB |
24112 | struct type *void_type = objfile_type (objfile)->builtin_void; |
24113 | struct type *addr_type = lookup_pointer_type (void_type); | |
293e7e51 | 24114 | int addr_size = this->per_cu->addr_size (); |
9a49df9d AB |
24115 | |
24116 | if (TYPE_LENGTH (addr_type) == addr_size) | |
24117 | return addr_type; | |
24118 | ||
c6d940a9 | 24119 | addr_type = addr_sized_int_type (addr_type->is_unsigned ()); |
9a49df9d AB |
24120 | return addr_type; |
24121 | } | |
24122 | ||
22b6cd70 TT |
24123 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
24124 | the index of the result, and that searches a vector. It will | |
24125 | return a result even if the offset in question does not actually | |
24126 | occur in any CU. This is separate so that it can be unit | |
24127 | tested. */ | |
ae038cb0 | 24128 | |
22b6cd70 TT |
24129 | static int |
24130 | dwarf2_find_containing_comp_unit | |
24131 | (sect_offset sect_off, | |
24132 | unsigned int offset_in_dwz, | |
24133 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 24134 | { |
ae038cb0 DJ |
24135 | int low, high; |
24136 | ||
ae038cb0 | 24137 | low = 0; |
22b6cd70 | 24138 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
24139 | while (high > low) |
24140 | { | |
36586728 | 24141 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 24142 | int mid = low + (high - low) / 2; |
9a619af0 | 24143 | |
22b6cd70 | 24144 | mid_cu = all_comp_units[mid]; |
36586728 | 24145 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 24146 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 24147 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
24148 | high = mid; |
24149 | else | |
24150 | low = mid + 1; | |
24151 | } | |
24152 | gdb_assert (low == high); | |
22b6cd70 TT |
24153 | return low; |
24154 | } | |
24155 | ||
24156 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
24157 | the DIE at OFFSET. Raises an error on failure. */ | |
24158 | ||
24159 | static struct dwarf2_per_cu_data * | |
24160 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
24161 | unsigned int offset_in_dwz, | |
976ca316 | 24162 | dwarf2_per_objfile *per_objfile) |
22b6cd70 | 24163 | { |
976ca316 SM |
24164 | int low = dwarf2_find_containing_comp_unit |
24165 | (sect_off, offset_in_dwz, per_objfile->per_bfd->all_comp_units); | |
24166 | dwarf2_per_cu_data *this_cu = per_objfile->per_bfd->all_comp_units[low]; | |
22b6cd70 | 24167 | |
45b8ae0c | 24168 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 24169 | { |
36586728 | 24170 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 24171 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
24172 | "offset %s [in module %s]"), |
24173 | sect_offset_str (sect_off), | |
976ca316 | 24174 | bfd_get_filename (per_objfile->objfile->obfd)); |
10b3939b | 24175 | |
976ca316 | 24176 | gdb_assert (per_objfile->per_bfd->all_comp_units[low-1]->sect_off |
9c541725 | 24177 | <= sect_off); |
976ca316 | 24178 | return per_objfile->per_bfd->all_comp_units[low-1]; |
ae038cb0 DJ |
24179 | } |
24180 | else | |
24181 | { | |
976ca316 | 24182 | if (low == per_objfile->per_bfd->all_comp_units.size () - 1 |
9c541725 | 24183 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 24184 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 24185 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
24186 | return this_cu; |
24187 | } | |
24188 | } | |
24189 | ||
22b6cd70 TT |
24190 | #if GDB_SELF_TEST |
24191 | ||
24192 | namespace selftests { | |
24193 | namespace find_containing_comp_unit { | |
24194 | ||
24195 | static void | |
24196 | run_test () | |
24197 | { | |
24198 | struct dwarf2_per_cu_data one {}; | |
24199 | struct dwarf2_per_cu_data two {}; | |
24200 | struct dwarf2_per_cu_data three {}; | |
24201 | struct dwarf2_per_cu_data four {}; | |
24202 | ||
24203 | one.length = 5; | |
24204 | two.sect_off = sect_offset (one.length); | |
24205 | two.length = 7; | |
24206 | ||
24207 | three.length = 5; | |
24208 | three.is_dwz = 1; | |
24209 | four.sect_off = sect_offset (three.length); | |
24210 | four.length = 7; | |
24211 | four.is_dwz = 1; | |
24212 | ||
24213 | std::vector<dwarf2_per_cu_data *> units; | |
24214 | units.push_back (&one); | |
24215 | units.push_back (&two); | |
24216 | units.push_back (&three); | |
24217 | units.push_back (&four); | |
24218 | ||
24219 | int result; | |
24220 | ||
24221 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
24222 | SELF_CHECK (units[result] == &one); | |
24223 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
24224 | SELF_CHECK (units[result] == &one); | |
24225 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
24226 | SELF_CHECK (units[result] == &two); | |
24227 | ||
24228 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
24229 | SELF_CHECK (units[result] == &three); | |
24230 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
24231 | SELF_CHECK (units[result] == &three); | |
24232 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
24233 | SELF_CHECK (units[result] == &four); | |
24234 | } | |
24235 | ||
24236 | } | |
24237 | } | |
24238 | ||
24239 | #endif /* GDB_SELF_TEST */ | |
24240 | ||
9e021579 | 24241 | /* Initialize dwarf2_cu to read PER_CU, in the context of PER_OBJFILE. */ |
93311388 | 24242 | |
9e021579 SM |
24243 | dwarf2_cu::dwarf2_cu (dwarf2_per_cu_data *per_cu, |
24244 | dwarf2_per_objfile *per_objfile) | |
24245 | : per_cu (per_cu), | |
24246 | per_objfile (per_objfile), | |
9068261f AB |
24247 | mark (false), |
24248 | has_loclist (false), | |
24249 | checked_producer (false), | |
24250 | producer_is_gxx_lt_4_6 (false), | |
24251 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 24252 | producer_is_icc (false), |
9068261f | 24253 | producer_is_icc_lt_14 (false), |
c258c396 | 24254 | producer_is_codewarrior (false), |
9068261f | 24255 | processing_has_namespace_info (false) |
93311388 | 24256 | { |
9816fde3 JK |
24257 | } |
24258 | ||
24259 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
24260 | ||
24261 | static void | |
95554aad TT |
24262 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
24263 | enum language pretend_language) | |
9816fde3 JK |
24264 | { |
24265 | struct attribute *attr; | |
24266 | ||
24267 | /* Set the language we're debugging. */ | |
24268 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 24269 | if (attr != nullptr) |
9816fde3 JK |
24270 | set_cu_language (DW_UNSND (attr), cu); |
24271 | else | |
9cded63f | 24272 | { |
95554aad | 24273 | cu->language = pretend_language; |
9cded63f TT |
24274 | cu->language_defn = language_def (cu->language); |
24275 | } | |
dee91e82 | 24276 | |
7d45c7c3 | 24277 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
24278 | } |
24279 | ||
7188ed02 | 24280 | /* See read.h. */ |
ae038cb0 | 24281 | |
7188ed02 SM |
24282 | dwarf2_cu * |
24283 | dwarf2_per_objfile::get_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 24284 | { |
7188ed02 SM |
24285 | auto it = m_dwarf2_cus.find (per_cu); |
24286 | if (it == m_dwarf2_cus.end ()) | |
24287 | return nullptr; | |
ae038cb0 | 24288 | |
7188ed02 SM |
24289 | return it->second; |
24290 | } | |
24291 | ||
24292 | /* See read.h. */ | |
24293 | ||
24294 | void | |
24295 | dwarf2_per_objfile::set_cu (dwarf2_per_cu_data *per_cu, dwarf2_cu *cu) | |
24296 | { | |
24297 | gdb_assert (this->get_cu (per_cu) == nullptr); | |
24298 | ||
24299 | m_dwarf2_cus[per_cu] = cu; | |
24300 | } | |
24301 | ||
24302 | /* See read.h. */ | |
24303 | ||
24304 | void | |
24305 | dwarf2_per_objfile::age_comp_units () | |
24306 | { | |
24307 | /* Start by clearing all marks. */ | |
24308 | for (auto pair : m_dwarf2_cus) | |
24309 | pair.second->mark = false; | |
24310 | ||
24311 | /* Traverse all CUs, mark them and their dependencies if used recently | |
24312 | enough. */ | |
24313 | for (auto pair : m_dwarf2_cus) | |
ae038cb0 | 24314 | { |
7188ed02 SM |
24315 | dwarf2_cu *cu = pair.second; |
24316 | ||
24317 | cu->last_used++; | |
24318 | if (cu->last_used <= dwarf_max_cache_age) | |
24319 | dwarf2_mark (cu); | |
ae038cb0 DJ |
24320 | } |
24321 | ||
7188ed02 SM |
24322 | /* Delete all CUs still not marked. */ |
24323 | for (auto it = m_dwarf2_cus.begin (); it != m_dwarf2_cus.end ();) | |
ae038cb0 | 24324 | { |
7188ed02 | 24325 | dwarf2_cu *cu = it->second; |
ae038cb0 | 24326 | |
7188ed02 | 24327 | if (!cu->mark) |
ae038cb0 | 24328 | { |
7188ed02 SM |
24329 | delete cu; |
24330 | it = m_dwarf2_cus.erase (it); | |
ae038cb0 DJ |
24331 | } |
24332 | else | |
7188ed02 | 24333 | it++; |
ae038cb0 DJ |
24334 | } |
24335 | } | |
24336 | ||
7188ed02 | 24337 | /* See read.h. */ |
ae038cb0 | 24338 | |
7188ed02 SM |
24339 | void |
24340 | dwarf2_per_objfile::remove_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 24341 | { |
7188ed02 SM |
24342 | auto it = m_dwarf2_cus.find (per_cu); |
24343 | if (it == m_dwarf2_cus.end ()) | |
24344 | return; | |
ae038cb0 | 24345 | |
7188ed02 | 24346 | delete it->second; |
ae038cb0 | 24347 | |
7188ed02 SM |
24348 | m_dwarf2_cus.erase (it); |
24349 | } | |
ae038cb0 | 24350 | |
7188ed02 SM |
24351 | dwarf2_per_objfile::~dwarf2_per_objfile () |
24352 | { | |
24353 | remove_all_cus (); | |
ae038cb0 DJ |
24354 | } |
24355 | ||
dee91e82 DE |
24356 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
24357 | We store these in a hash table separate from the DIEs, and preserve them | |
24358 | when the DIEs are flushed out of cache. | |
24359 | ||
24360 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 24361 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
24362 | or the type may come from a DWO file. Furthermore, while it's more logical |
24363 | to use per_cu->section+offset, with Fission the section with the data is in | |
24364 | the DWO file but we don't know that section at the point we need it. | |
24365 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
24366 | because we can enter the lookup routine, get_die_type_at_offset, from | |
24367 | outside this file, and thus won't necessarily have PER_CU->cu. | |
24368 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 24369 | |
dee91e82 | 24370 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 24371 | { |
dee91e82 | 24372 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 24373 | sect_offset sect_off; |
1c379e20 DJ |
24374 | struct type *type; |
24375 | }; | |
24376 | ||
dee91e82 | 24377 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
24378 | |
24379 | static hashval_t | |
dee91e82 | 24380 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 24381 | { |
9a3c8263 SM |
24382 | const struct dwarf2_per_cu_offset_and_type *ofs |
24383 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 24384 | |
9c541725 | 24385 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
24386 | } |
24387 | ||
dee91e82 | 24388 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
24389 | |
24390 | static int | |
dee91e82 | 24391 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 24392 | { |
9a3c8263 SM |
24393 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
24394 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
24395 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
24396 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 24397 | |
dee91e82 | 24398 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 24399 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
24400 | } |
24401 | ||
24402 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
24403 | table if necessary. For convenience, return TYPE. |
24404 | ||
24405 | The DIEs reading must have careful ordering to: | |
85102364 | 24406 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
24407 | reading current DIE. |
24408 | * Not trying to dereference contents of still incompletely read in types | |
24409 | while reading in other DIEs. | |
24410 | * Enable referencing still incompletely read in types just by a pointer to | |
24411 | the type without accessing its fields. | |
24412 | ||
24413 | Therefore caller should follow these rules: | |
24414 | * Try to fetch any prerequisite types we may need to build this DIE type | |
24415 | before building the type and calling set_die_type. | |
e71ec853 | 24416 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
24417 | possible before fetching more types to complete the current type. |
24418 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 24419 | |
f792889a | 24420 | static struct type * |
1c379e20 DJ |
24421 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
24422 | { | |
976ca316 | 24423 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
dee91e82 | 24424 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
976ca316 | 24425 | struct objfile *objfile = per_objfile->objfile; |
3cdcd0ce JB |
24426 | struct attribute *attr; |
24427 | struct dynamic_prop prop; | |
1c379e20 | 24428 | |
b4ba55a1 JB |
24429 | /* For Ada types, make sure that the gnat-specific data is always |
24430 | initialized (if not already set). There are a few types where | |
24431 | we should not be doing so, because the type-specific area is | |
24432 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
24433 | where the type-specific area is used to store the floatformat). | |
24434 | But this is not a problem, because the gnat-specific information | |
24435 | is actually not needed for these types. */ | |
24436 | if (need_gnat_info (cu) | |
78134374 SM |
24437 | && type->code () != TYPE_CODE_FUNC |
24438 | && type->code () != TYPE_CODE_FLT | |
24439 | && type->code () != TYPE_CODE_METHODPTR | |
24440 | && type->code () != TYPE_CODE_MEMBERPTR | |
24441 | && type->code () != TYPE_CODE_METHOD | |
b4ba55a1 JB |
24442 | && !HAVE_GNAT_AUX_INFO (type)) |
24443 | INIT_GNAT_SPECIFIC (type); | |
24444 | ||
3f2f83dd KB |
24445 | /* Read DW_AT_allocated and set in type. */ |
24446 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
9cdf9820 | 24447 | if (attr != NULL) |
3f2f83dd | 24448 | { |
293e7e51 | 24449 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 24450 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
5c54719c | 24451 | type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); |
3f2f83dd | 24452 | } |
3f2f83dd KB |
24453 | |
24454 | /* Read DW_AT_associated and set in type. */ | |
24455 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
9cdf9820 | 24456 | if (attr != NULL) |
3f2f83dd | 24457 | { |
293e7e51 | 24458 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 24459 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
5c54719c | 24460 | type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); |
3f2f83dd | 24461 | } |
3f2f83dd | 24462 | |
3cdcd0ce JB |
24463 | /* Read DW_AT_data_location and set in type. */ |
24464 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
293e7e51 | 24465 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 24466 | type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); |
3cdcd0ce | 24467 | |
976ca316 SM |
24468 | if (per_objfile->die_type_hash == NULL) |
24469 | per_objfile->die_type_hash | |
0335378b TT |
24470 | = htab_up (htab_create_alloc (127, |
24471 | per_cu_offset_and_type_hash, | |
24472 | per_cu_offset_and_type_eq, | |
24473 | NULL, xcalloc, xfree)); | |
1c379e20 | 24474 | |
dee91e82 | 24475 | ofs.per_cu = cu->per_cu; |
9c541725 | 24476 | ofs.sect_off = die->sect_off; |
1c379e20 | 24477 | ofs.type = type; |
dee91e82 | 24478 | slot = (struct dwarf2_per_cu_offset_and_type **) |
976ca316 | 24479 | htab_find_slot (per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 24480 | if (*slot) |
b98664d3 | 24481 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 24482 | sect_offset_str (die->sect_off)); |
8d749320 SM |
24483 | *slot = XOBNEW (&objfile->objfile_obstack, |
24484 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 24485 | **slot = ofs; |
f792889a | 24486 | return type; |
1c379e20 DJ |
24487 | } |
24488 | ||
9c541725 | 24489 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 24490 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
24491 | |
24492 | static struct type * | |
9c541725 | 24493 | get_die_type_at_offset (sect_offset sect_off, |
aa66c379 | 24494 | dwarf2_per_cu_data *per_cu, |
976ca316 | 24495 | dwarf2_per_objfile *per_objfile) |
1c379e20 | 24496 | { |
dee91e82 | 24497 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 24498 | |
976ca316 | 24499 | if (per_objfile->die_type_hash == NULL) |
f792889a | 24500 | return NULL; |
1c379e20 | 24501 | |
dee91e82 | 24502 | ofs.per_cu = per_cu; |
9c541725 | 24503 | ofs.sect_off = sect_off; |
9a3c8263 | 24504 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
976ca316 | 24505 | htab_find (per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
24506 | if (slot) |
24507 | return slot->type; | |
24508 | else | |
24509 | return NULL; | |
24510 | } | |
24511 | ||
02142a6c | 24512 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
24513 | or return NULL if DIE does not have a saved type. */ |
24514 | ||
24515 | static struct type * | |
24516 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
24517 | { | |
aa66c379 | 24518 | return get_die_type_at_offset (die->sect_off, cu->per_cu, cu->per_objfile); |
673bfd45 DE |
24519 | } |
24520 | ||
10b3939b DJ |
24521 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
24522 | ||
24523 | static void | |
24524 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
24525 | struct dwarf2_per_cu_data *ref_per_cu) | |
24526 | { | |
24527 | void **slot; | |
24528 | ||
24529 | if (cu->dependencies == NULL) | |
24530 | cu->dependencies | |
24531 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
24532 | NULL, &cu->comp_unit_obstack, | |
24533 | hashtab_obstack_allocate, | |
24534 | dummy_obstack_deallocate); | |
24535 | ||
24536 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
24537 | if (*slot == NULL) | |
24538 | *slot = ref_per_cu; | |
24539 | } | |
1c379e20 | 24540 | |
f504f079 DE |
24541 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
24542 | Set the mark field in every compilation unit in the | |
7188ed02 SM |
24543 | cache that we must keep because we are keeping CU. |
24544 | ||
24545 | DATA is the dwarf2_per_objfile object in which to look up CUs. */ | |
ae038cb0 | 24546 | |
10b3939b DJ |
24547 | static int |
24548 | dwarf2_mark_helper (void **slot, void *data) | |
24549 | { | |
7188ed02 SM |
24550 | dwarf2_per_cu_data *per_cu = (dwarf2_per_cu_data *) *slot; |
24551 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) data; | |
24552 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); | |
d07ed419 JK |
24553 | |
24554 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
24555 | reading of the chain. As such dependencies remain valid it is not much | |
24556 | useful to track and undo them during QUIT cleanups. */ | |
7188ed02 | 24557 | if (cu == nullptr) |
d07ed419 JK |
24558 | return 1; |
24559 | ||
7188ed02 | 24560 | if (cu->mark) |
10b3939b | 24561 | return 1; |
10b3939b | 24562 | |
7188ed02 SM |
24563 | cu->mark = true; |
24564 | ||
24565 | if (cu->dependencies != nullptr) | |
24566 | htab_traverse (cu->dependencies, dwarf2_mark_helper, per_objfile); | |
10b3939b DJ |
24567 | |
24568 | return 1; | |
24569 | } | |
24570 | ||
f504f079 DE |
24571 | /* Set the mark field in CU and in every other compilation unit in the |
24572 | cache that we must keep because we are keeping CU. */ | |
24573 | ||
ae038cb0 DJ |
24574 | static void |
24575 | dwarf2_mark (struct dwarf2_cu *cu) | |
24576 | { | |
24577 | if (cu->mark) | |
24578 | return; | |
7188ed02 | 24579 | |
9068261f | 24580 | cu->mark = true; |
ae038cb0 | 24581 | |
7188ed02 SM |
24582 | if (cu->dependencies != nullptr) |
24583 | htab_traverse (cu->dependencies, dwarf2_mark_helper, cu->per_objfile); | |
72bf9492 DJ |
24584 | } |
24585 | ||
72bf9492 DJ |
24586 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
24587 | is its offset in .debug_info for this objfile. */ | |
24588 | ||
24589 | static hashval_t | |
24590 | partial_die_hash (const void *item) | |
24591 | { | |
9a3c8263 SM |
24592 | const struct partial_die_info *part_die |
24593 | = (const struct partial_die_info *) item; | |
9a619af0 | 24594 | |
9c541725 | 24595 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
24596 | } |
24597 | ||
24598 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
24599 | are equal if they have the same offset. */ | |
24600 | ||
24601 | static int | |
24602 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
24603 | { | |
9a3c8263 SM |
24604 | const struct partial_die_info *part_die_lhs |
24605 | = (const struct partial_die_info *) item_lhs; | |
24606 | const struct partial_die_info *part_die_rhs | |
24607 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 24608 | |
9c541725 | 24609 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
24610 | } |
24611 | ||
3c3bb058 AB |
24612 | struct cmd_list_element *set_dwarf_cmdlist; |
24613 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 24614 | |
9291a0cd | 24615 | static void |
cd4fb1b2 SM |
24616 | show_check_physname (struct ui_file *file, int from_tty, |
24617 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 24618 | { |
cd4fb1b2 SM |
24619 | fprintf_filtered (file, |
24620 | _("Whether to check \"physname\" is %s.\n"), | |
24621 | value); | |
9291a0cd TT |
24622 | } |
24623 | ||
6c265988 | 24624 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 24625 | void |
6c265988 | 24626 | _initialize_dwarf2_read () |
9291a0cd | 24627 | { |
0743fc83 | 24628 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 24629 | Set DWARF specific variables.\n\ |
590042fc | 24630 | Configure DWARF variables such as the cache size."), |
0743fc83 TT |
24631 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
24632 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 24633 | |
0743fc83 | 24634 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
24635 | Show DWARF specific variables.\n\ |
24636 | Show DWARF variables such as the cache size."), | |
0743fc83 TT |
24637 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
24638 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 24639 | |
cd4fb1b2 SM |
24640 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
24641 | &dwarf_max_cache_age, _("\ | |
24642 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
24643 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
24644 | A higher limit means that cached compilation units will be stored\n\ | |
24645 | in memory longer, and more total memory will be used. Zero disables\n\ | |
24646 | caching, which can slow down startup."), | |
24647 | NULL, | |
24648 | show_dwarf_max_cache_age, | |
24649 | &set_dwarf_cmdlist, | |
24650 | &show_dwarf_cmdlist); | |
156942c7 | 24651 | |
cd4fb1b2 SM |
24652 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
24653 | Set debugging of the DWARF reader."), _("\ | |
24654 | Show debugging of the DWARF reader."), _("\ | |
24655 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
24656 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
24657 | information. A value greater than 1 provides more verbose information."), | |
24658 | NULL, | |
24659 | NULL, | |
24660 | &setdebuglist, &showdebuglist); | |
9291a0cd | 24661 | |
cd4fb1b2 SM |
24662 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
24663 | Set debugging of the DWARF DIE reader."), _("\ | |
24664 | Show debugging of the DWARF DIE reader."), _("\ | |
24665 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
24666 | The value is the maximum depth to print."), | |
24667 | NULL, | |
24668 | NULL, | |
24669 | &setdebuglist, &showdebuglist); | |
9291a0cd | 24670 | |
cd4fb1b2 SM |
24671 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
24672 | Set debugging of the dwarf line reader."), _("\ | |
24673 | Show debugging of the dwarf line reader."), _("\ | |
24674 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
24675 | A value of 1 (one) provides basic information.\n\ | |
24676 | A value greater than 1 provides more verbose information."), | |
24677 | NULL, | |
24678 | NULL, | |
24679 | &setdebuglist, &showdebuglist); | |
437afbb8 | 24680 | |
cd4fb1b2 SM |
24681 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
24682 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
24683 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
24684 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
24685 | the demangler."), | |
24686 | NULL, show_check_physname, | |
24687 | &setdebuglist, &showdebuglist); | |
900e11f9 | 24688 | |
e615022a DE |
24689 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
24690 | no_class, &use_deprecated_index_sections, _("\ | |
24691 | Set whether to use deprecated gdb_index sections."), _("\ | |
24692 | Show whether to use deprecated gdb_index sections."), _("\ | |
24693 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
24694 | Normally they are ignored either because of a missing feature or\n\ | |
24695 | performance issue.\n\ | |
24696 | Warning: This option must be enabled before gdb reads the file."), | |
24697 | NULL, | |
24698 | NULL, | |
24699 | &setlist, &showlist); | |
24700 | ||
f1e6e072 TT |
24701 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
24702 | &dwarf2_locexpr_funcs); | |
24703 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
24704 | &dwarf2_loclist_funcs); | |
24705 | ||
24706 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24707 | &dwarf2_block_frame_base_locexpr_funcs); | |
24708 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24709 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
24710 | |
24711 | #if GDB_SELF_TEST | |
24712 | selftests::register_test ("dw2_expand_symtabs_matching", | |
24713 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
24714 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
24715 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 24716 | #endif |
6502dd73 | 24717 | } |