Commit | Line | Data |
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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 *, | |
18a8505e AT |
1307 | const gdb_byte *, bool *need_reprocess); |
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 | |
2123 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2124 | { | |
9a3c8263 | 2125 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2126 | |
2127 | /* Note that we only support the standard ELF names, because .dwz | |
2128 | is ELF-only (at the time of writing). */ | |
2129 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2130 | { | |
049412e3 | 2131 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2132 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2133 | } |
2134 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2135 | { | |
049412e3 | 2136 | dwz_file->info.s.section = sectp; |
fd361982 | 2137 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2138 | } |
2139 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2140 | { | |
049412e3 | 2141 | dwz_file->str.s.section = sectp; |
fd361982 | 2142 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2143 | } |
2144 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2145 | { | |
049412e3 | 2146 | dwz_file->line.s.section = sectp; |
fd361982 | 2147 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2148 | } |
2149 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2150 | { | |
049412e3 | 2151 | dwz_file->macro.s.section = sectp; |
fd361982 | 2152 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2153 | } |
2ec9a5e0 TT |
2154 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2155 | { | |
049412e3 | 2156 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2157 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2158 | } |
927aa2e7 JK |
2159 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2160 | { | |
2161 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2162 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2163 | } |
36586728 TT |
2164 | } |
2165 | ||
c4973306 | 2166 | /* See dwarf2read.h. */ |
36586728 | 2167 | |
c4973306 | 2168 | struct dwz_file * |
c3699833 | 2169 | dwarf2_get_dwz_file (dwarf2_per_bfd *per_bfd) |
36586728 | 2170 | { |
36586728 | 2171 | const char *filename; |
acd13123 | 2172 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2173 | size_t buildid_len; |
2174 | bfd_byte *buildid; | |
36586728 | 2175 | |
c3699833 SM |
2176 | if (per_bfd->dwz_file != NULL) |
2177 | return per_bfd->dwz_file.get (); | |
36586728 | 2178 | |
4db1a1dc | 2179 | bfd_set_error (bfd_error_no_error); |
791afaa2 | 2180 | gdb::unique_xmalloc_ptr<char> data |
c3699833 | 2181 | (bfd_get_alt_debug_link_info (per_bfd->obfd, |
791afaa2 | 2182 | &buildid_len_arg, &buildid)); |
4db1a1dc TT |
2183 | if (data == NULL) |
2184 | { | |
2185 | if (bfd_get_error () == bfd_error_no_error) | |
2186 | return NULL; | |
2187 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2188 | bfd_errmsg (bfd_get_error ())); | |
2189 | } | |
791afaa2 TT |
2190 | |
2191 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2192 | |
acd13123 TT |
2193 | buildid_len = (size_t) buildid_len_arg; |
2194 | ||
791afaa2 | 2195 | filename = data.get (); |
d721ba37 PA |
2196 | |
2197 | std::string abs_storage; | |
36586728 TT |
2198 | if (!IS_ABSOLUTE_PATH (filename)) |
2199 | { | |
14278e1f | 2200 | gdb::unique_xmalloc_ptr<char> abs |
c3699833 | 2201 | = gdb_realpath (bfd_get_filename (per_bfd->obfd)); |
36586728 | 2202 | |
14278e1f | 2203 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2204 | filename = abs_storage.c_str (); |
36586728 TT |
2205 | } |
2206 | ||
dc294be5 TT |
2207 | /* First try the file name given in the section. If that doesn't |
2208 | work, try to use the build-id instead. */ | |
ad80db5b | 2209 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget)); |
dc294be5 | 2210 | if (dwz_bfd != NULL) |
36586728 | 2211 | { |
192b62ce | 2212 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2213 | dwz_bfd.reset (nullptr); |
36586728 TT |
2214 | } |
2215 | ||
dc294be5 TT |
2216 | if (dwz_bfd == NULL) |
2217 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2218 | ||
0d79cdc4 AM |
2219 | if (dwz_bfd == nullptr) |
2220 | { | |
2221 | gdb::unique_xmalloc_ptr<char> alt_filename; | |
c3699833 | 2222 | const char *origname = bfd_get_filename (per_bfd->obfd); |
0d79cdc4 AM |
2223 | |
2224 | scoped_fd fd (debuginfod_debuginfo_query (buildid, | |
2225 | buildid_len, | |
2226 | origname, | |
2227 | &alt_filename)); | |
2228 | ||
2229 | if (fd.get () >= 0) | |
2230 | { | |
2231 | /* File successfully retrieved from server. */ | |
ad80db5b | 2232 | dwz_bfd = gdb_bfd_open (alt_filename.get (), gnutarget); |
0d79cdc4 AM |
2233 | |
2234 | if (dwz_bfd == nullptr) | |
2235 | warning (_("File \"%s\" from debuginfod cannot be opened as bfd"), | |
2236 | alt_filename.get ()); | |
2237 | else if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) | |
2238 | dwz_bfd.reset (nullptr); | |
2239 | } | |
2240 | } | |
2241 | ||
dc294be5 TT |
2242 | if (dwz_bfd == NULL) |
2243 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
c3699833 | 2244 | bfd_get_filename (per_bfd->obfd)); |
dc294be5 | 2245 | |
7ff8cb8c TT |
2246 | std::unique_ptr<struct dwz_file> result |
2247 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2248 | |
7ff8cb8c TT |
2249 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2250 | result.get ()); | |
36586728 | 2251 | |
c3699833 SM |
2252 | gdb_bfd_record_inclusion (per_bfd->obfd, result->dwz_bfd.get ()); |
2253 | per_bfd->dwz_file = std::move (result); | |
2254 | return per_bfd->dwz_file.get (); | |
36586728 | 2255 | } |
9291a0cd | 2256 | \f |
7b9f3c50 DE |
2257 | /* DWARF quick_symbols_functions support. */ |
2258 | ||
2259 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2260 | unique line tables, so we maintain a separate table of all .debug_line | |
2261 | derived entries to support the sharing. | |
2262 | All the quick functions need is the list of file names. We discard the | |
2263 | line_header when we're done and don't need to record it here. */ | |
2264 | struct quick_file_names | |
2265 | { | |
094b34ac DE |
2266 | /* The data used to construct the hash key. */ |
2267 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2268 | |
2269 | /* The number of entries in file_names, real_names. */ | |
2270 | unsigned int num_file_names; | |
2271 | ||
2272 | /* The file names from the line table, after being run through | |
2273 | file_full_name. */ | |
2274 | const char **file_names; | |
2275 | ||
2276 | /* The file names from the line table after being run through | |
2277 | gdb_realpath. These are computed lazily. */ | |
2278 | const char **real_names; | |
2279 | }; | |
2280 | ||
2281 | /* When using the index (and thus not using psymtabs), each CU has an | |
2282 | object of this type. This is used to hold information needed by | |
2283 | the various "quick" methods. */ | |
2284 | struct dwarf2_per_cu_quick_data | |
2285 | { | |
2286 | /* The file table. This can be NULL if there was no file table | |
2287 | or it's currently not read in. | |
5989a64e | 2288 | NOTE: This points into dwarf2_per_objfile->per_bfd->quick_file_names_table. */ |
7b9f3c50 DE |
2289 | struct quick_file_names *file_names; |
2290 | ||
7b9f3c50 DE |
2291 | /* A temporary mark bit used when iterating over all CUs in |
2292 | expand_symtabs_matching. */ | |
2293 | unsigned int mark : 1; | |
2294 | ||
2295 | /* True if we've tried to read the file table and found there isn't one. | |
2296 | There will be no point in trying to read it again next time. */ | |
2297 | unsigned int no_file_data : 1; | |
2298 | }; | |
2299 | ||
094b34ac DE |
2300 | /* Utility hash function for a stmt_list_hash. */ |
2301 | ||
2302 | static hashval_t | |
2303 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2304 | { | |
2305 | hashval_t v = 0; | |
2306 | ||
2307 | if (stmt_list_hash->dwo_unit != NULL) | |
2308 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2309 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2310 | return v; |
2311 | } | |
2312 | ||
2313 | /* Utility equality function for a stmt_list_hash. */ | |
2314 | ||
2315 | static int | |
2316 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2317 | const struct stmt_list_hash *rhs) | |
2318 | { | |
2319 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2320 | return 0; | |
2321 | if (lhs->dwo_unit != NULL | |
2322 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2323 | return 0; | |
2324 | ||
9c541725 | 2325 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2326 | } |
2327 | ||
7b9f3c50 DE |
2328 | /* Hash function for a quick_file_names. */ |
2329 | ||
2330 | static hashval_t | |
2331 | hash_file_name_entry (const void *e) | |
2332 | { | |
9a3c8263 SM |
2333 | const struct quick_file_names *file_data |
2334 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2335 | |
094b34ac | 2336 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2337 | } |
2338 | ||
2339 | /* Equality function for a quick_file_names. */ | |
2340 | ||
2341 | static int | |
2342 | eq_file_name_entry (const void *a, const void *b) | |
2343 | { | |
9a3c8263 SM |
2344 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2345 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2346 | |
094b34ac | 2347 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2348 | } |
2349 | ||
2350 | /* Delete function for a quick_file_names. */ | |
2351 | ||
2352 | static void | |
2353 | delete_file_name_entry (void *e) | |
2354 | { | |
9a3c8263 | 2355 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2356 | int i; |
2357 | ||
2358 | for (i = 0; i < file_data->num_file_names; ++i) | |
2359 | { | |
2360 | xfree ((void*) file_data->file_names[i]); | |
2361 | if (file_data->real_names) | |
2362 | xfree ((void*) file_data->real_names[i]); | |
2363 | } | |
2364 | ||
45940949 TT |
2365 | /* The space for the struct itself lives on the obstack, so we don't |
2366 | free it here. */ | |
7b9f3c50 DE |
2367 | } |
2368 | ||
2369 | /* Create a quick_file_names hash table. */ | |
2370 | ||
5895093f | 2371 | static htab_up |
7b9f3c50 DE |
2372 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2373 | { | |
5895093f TT |
2374 | return htab_up (htab_create_alloc (nr_initial_entries, |
2375 | hash_file_name_entry, eq_file_name_entry, | |
2376 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2377 | } |
9291a0cd | 2378 | |
ab432490 SM |
2379 | /* Read in CU (dwarf2_cu object) for PER_CU in the context of PER_OBJFILE. This |
2380 | function is unrelated to symtabs, symtab would have to be created afterwards. | |
2381 | You should call age_cached_comp_units after processing the CU. */ | |
918dd910 | 2382 | |
1b555f17 | 2383 | static dwarf2_cu * |
ab432490 SM |
2384 | load_cu (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
2385 | bool skip_partial) | |
918dd910 | 2386 | { |
3019eac3 | 2387 | if (per_cu->is_debug_types) |
ab432490 | 2388 | load_full_type_unit (per_cu, per_objfile); |
918dd910 | 2389 | else |
ab432490 | 2390 | load_full_comp_unit (per_cu, per_objfile, skip_partial, language_minimal); |
918dd910 | 2391 | |
7188ed02 SM |
2392 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
2393 | if (cu == nullptr) | |
1b555f17 | 2394 | return nullptr; /* Dummy CU. */ |
2dc860c0 | 2395 | |
7188ed02 | 2396 | dwarf2_find_base_address (cu->dies, cu); |
1b555f17 | 2397 | |
7188ed02 | 2398 | return cu; |
918dd910 JK |
2399 | } |
2400 | ||
97a1449a | 2401 | /* Read in the symbols for PER_CU in the context of DWARF"_PER_OBJFILE. */ |
2fdf6df6 | 2402 | |
9291a0cd | 2403 | static void |
97a1449a | 2404 | dw2_do_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2405 | dwarf2_per_objfile *per_objfile, bool skip_partial) |
9291a0cd | 2406 | { |
f4dc4d17 DE |
2407 | /* Skip type_unit_groups, reading the type units they contain |
2408 | is handled elsewhere. */ | |
197400e8 | 2409 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2410 | return; |
2411 | ||
b303c6f6 AB |
2412 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2413 | the queue. After this point we're guaranteed to leave this function | |
2414 | with the dwarf queue empty. */ | |
39856def | 2415 | dwarf2_queue_guard q_guard (dwarf2_per_objfile); |
9291a0cd | 2416 | |
976ca316 | 2417 | if (!per_objfile->symtab_set_p (per_cu)) |
95554aad | 2418 | { |
976ca316 SM |
2419 | queue_comp_unit (per_cu, per_objfile, language_minimal); |
2420 | dwarf2_cu *cu = load_cu (per_cu, per_objfile, skip_partial); | |
89e63ee4 DE |
2421 | |
2422 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2423 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2424 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2425 | if (!per_cu->is_debug_types | |
1b555f17 SM |
2426 | && cu != NULL |
2427 | && cu->dwo_unit != NULL | |
976ca316 SM |
2428 | && per_objfile->per_bfd->index_table != NULL |
2429 | && per_objfile->per_bfd->index_table->version <= 7 | |
89e63ee4 | 2430 | /* DWP files aren't supported yet. */ |
976ca316 | 2431 | && get_dwp_file (per_objfile) == NULL) |
1b555f17 | 2432 | queue_and_load_all_dwo_tus (cu); |
95554aad | 2433 | } |
9291a0cd | 2434 | |
976ca316 | 2435 | process_queue (per_objfile); |
9291a0cd TT |
2436 | |
2437 | /* Age the cache, releasing compilation units that have not | |
2438 | been used recently. */ | |
976ca316 | 2439 | per_objfile->age_comp_units (); |
9291a0cd TT |
2440 | } |
2441 | ||
97a1449a SM |
2442 | /* Ensure that the symbols for PER_CU have been read in. DWARF2_PER_OBJFILE is |
2443 | the per-objfile for which this symtab is instantiated. | |
2444 | ||
2445 | Returns the resulting symbol table. */ | |
2fdf6df6 | 2446 | |
43f3e411 | 2447 | static struct compunit_symtab * |
97a1449a | 2448 | dw2_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2449 | dwarf2_per_objfile *per_objfile, |
97a1449a | 2450 | bool skip_partial) |
9291a0cd | 2451 | { |
976ca316 | 2452 | gdb_assert (per_objfile->per_bfd->using_index); |
af758d11 | 2453 | |
976ca316 | 2454 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd | 2455 | { |
976ca316 | 2456 | free_cached_comp_units freer (per_objfile); |
c83dd867 | 2457 | scoped_restore decrementer = increment_reading_symtab (); |
976ca316 SM |
2458 | dw2_do_instantiate_symtab (per_cu, per_objfile, skip_partial); |
2459 | process_cu_includes (per_objfile); | |
9291a0cd | 2460 | } |
f194fefb | 2461 | |
976ca316 | 2462 | return per_objfile->get_symtab (per_cu); |
9291a0cd TT |
2463 | } |
2464 | ||
ff4c9fec | 2465 | /* See declaration. */ |
f4dc4d17 | 2466 | |
ff4c9fec | 2467 | dwarf2_per_cu_data * |
5989a64e | 2468 | dwarf2_per_bfd::get_cutu (int index) |
ff4c9fec | 2469 | { |
b76e467d | 2470 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2471 | { |
b76e467d | 2472 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2473 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2474 | return &this->all_type_units[index]->per_cu; |
2475 | } | |
f4dc4d17 | 2476 | |
ff4c9fec SM |
2477 | return this->all_comp_units[index]; |
2478 | } | |
f4dc4d17 | 2479 | |
ff4c9fec | 2480 | /* See declaration. */ |
2fdf6df6 | 2481 | |
ff4c9fec | 2482 | dwarf2_per_cu_data * |
5989a64e | 2483 | dwarf2_per_bfd::get_cu (int index) |
1fd400ff | 2484 | { |
b76e467d | 2485 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2486 | |
ff4c9fec | 2487 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2488 | } |
2489 | ||
ff4c9fec | 2490 | /* See declaration. */ |
f4dc4d17 | 2491 | |
ff4c9fec | 2492 | signatured_type * |
5989a64e | 2493 | dwarf2_per_bfd::get_tu (int index) |
f4dc4d17 | 2494 | { |
b2bdb8cf | 2495 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2496 | |
ff4c9fec | 2497 | return this->all_type_units[index]; |
1fd400ff TT |
2498 | } |
2499 | ||
d3473f0c TT |
2500 | /* See read.h. */ |
2501 | ||
2502 | dwarf2_per_cu_data * | |
5989a64e | 2503 | dwarf2_per_bfd::allocate_per_cu () |
d3473f0c TT |
2504 | { |
2505 | dwarf2_per_cu_data *result = OBSTACK_ZALLOC (&obstack, dwarf2_per_cu_data); | |
1859c670 | 2506 | result->per_bfd = this; |
d3473f0c TT |
2507 | result->index = m_num_psymtabs++; |
2508 | return result; | |
2509 | } | |
2510 | ||
2511 | /* See read.h. */ | |
2512 | ||
2513 | signatured_type * | |
5989a64e | 2514 | dwarf2_per_bfd::allocate_signatured_type () |
d3473f0c TT |
2515 | { |
2516 | signatured_type *result = OBSTACK_ZALLOC (&obstack, signatured_type); | |
1859c670 | 2517 | result->per_cu.per_bfd = this; |
d3473f0c TT |
2518 | result->per_cu.index = m_num_psymtabs++; |
2519 | return result; | |
2520 | } | |
2521 | ||
168c9250 | 2522 | /* Return a new dwarf2_per_cu_data allocated on the per-bfd |
45940949 | 2523 | obstack, and constructed with the specified field values. */ |
4b514bc8 JK |
2524 | |
2525 | static dwarf2_per_cu_data * | |
168c9250 SM |
2526 | create_cu_from_index_list (dwarf2_per_bfd *per_bfd, |
2527 | struct dwarf2_section_info *section, | |
2528 | int is_dwz, | |
2529 | sect_offset sect_off, ULONGEST length) | |
4b514bc8 | 2530 | { |
168c9250 | 2531 | dwarf2_per_cu_data *the_cu = per_bfd->allocate_per_cu (); |
4b514bc8 JK |
2532 | the_cu->sect_off = sect_off; |
2533 | the_cu->length = length; | |
4b514bc8 | 2534 | the_cu->section = section; |
168c9250 | 2535 | the_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 2536 | struct dwarf2_per_cu_quick_data); |
4b514bc8 JK |
2537 | the_cu->is_dwz = is_dwz; |
2538 | return the_cu; | |
2539 | } | |
2540 | ||
2ec9a5e0 TT |
2541 | /* A helper for create_cus_from_index that handles a given list of |
2542 | CUs. */ | |
2fdf6df6 | 2543 | |
74a0d9f6 | 2544 | static void |
168c9250 | 2545 | create_cus_from_index_list (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2546 | const gdb_byte *cu_list, offset_type n_elements, |
2547 | struct dwarf2_section_info *section, | |
b76e467d | 2548 | int is_dwz) |
9291a0cd | 2549 | { |
12359b5e | 2550 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2551 | { |
74a0d9f6 | 2552 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2553 | |
2554 | sect_offset sect_off | |
2555 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2556 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2557 | cu_list += 2 * 8; |
2558 | ||
b76e467d | 2559 | dwarf2_per_cu_data *per_cu |
168c9250 SM |
2560 | = create_cu_from_index_list (per_bfd, section, is_dwz, sect_off, |
2561 | length); | |
2562 | per_bfd->all_comp_units.push_back (per_cu); | |
9291a0cd | 2563 | } |
9291a0cd TT |
2564 | } |
2565 | ||
2ec9a5e0 | 2566 | /* Read the CU list from the mapped index, and use it to create all |
168c9250 | 2567 | the CU objects for PER_BFD. */ |
2ec9a5e0 | 2568 | |
74a0d9f6 | 2569 | static void |
168c9250 | 2570 | create_cus_from_index (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2571 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2572 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2573 | { | |
168c9250 SM |
2574 | gdb_assert (per_bfd->all_comp_units.empty ()); |
2575 | per_bfd->all_comp_units.reserve ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2576 | |
168c9250 SM |
2577 | create_cus_from_index_list (per_bfd, cu_list, cu_list_elements, |
2578 | &per_bfd->info, 0); | |
2ec9a5e0 TT |
2579 | |
2580 | if (dwz_elements == 0) | |
74a0d9f6 | 2581 | return; |
2ec9a5e0 | 2582 | |
168c9250 SM |
2583 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
2584 | create_cus_from_index_list (per_bfd, dwz_list, dwz_elements, | |
b76e467d | 2585 | &dwz->info, 1); |
2ec9a5e0 TT |
2586 | } |
2587 | ||
1fd400ff | 2588 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2589 | |
74a0d9f6 | 2590 | static void |
12359b5e | 2591 | create_signatured_type_table_from_index |
168c9250 SM |
2592 | (dwarf2_per_bfd *per_bfd, struct dwarf2_section_info *section, |
2593 | const gdb_byte *bytes, offset_type elements) | |
1fd400ff | 2594 | { |
168c9250 SM |
2595 | gdb_assert (per_bfd->all_type_units.empty ()); |
2596 | per_bfd->all_type_units.reserve (elements / 3); | |
1fd400ff | 2597 | |
298e9637 | 2598 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2599 | |
12359b5e | 2600 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2601 | { |
52dc124a | 2602 | struct signatured_type *sig_type; |
9c541725 | 2603 | ULONGEST signature; |
1fd400ff | 2604 | void **slot; |
9c541725 | 2605 | cu_offset type_offset_in_tu; |
1fd400ff | 2606 | |
74a0d9f6 | 2607 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2608 | sect_offset sect_off |
2609 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2610 | type_offset_in_tu | |
2611 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2612 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2613 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2614 | bytes += 3 * 8; | |
2615 | ||
168c9250 | 2616 | sig_type = per_bfd->allocate_signatured_type (); |
52dc124a | 2617 | sig_type->signature = signature; |
9c541725 | 2618 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2619 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2620 | sig_type->per_cu.section = section; |
9c541725 | 2621 | sig_type->per_cu.sect_off = sect_off; |
52dc124a | 2622 | sig_type->per_cu.v.quick |
168c9250 | 2623 | = OBSTACK_ZALLOC (&per_bfd->obstack, |
1fd400ff TT |
2624 | struct dwarf2_per_cu_quick_data); |
2625 | ||
b0b6a987 | 2626 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2627 | *slot = sig_type; |
1fd400ff | 2628 | |
168c9250 | 2629 | per_bfd->all_type_units.push_back (sig_type); |
1fd400ff TT |
2630 | } |
2631 | ||
168c9250 | 2632 | per_bfd->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2633 | } |
2634 | ||
927aa2e7 JK |
2635 | /* Create the signatured type hash table from .debug_names. */ |
2636 | ||
2637 | static void | |
2638 | create_signatured_type_table_from_debug_names | |
976ca316 | 2639 | (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2640 | const mapped_debug_names &map, |
2641 | struct dwarf2_section_info *section, | |
2642 | struct dwarf2_section_info *abbrev_section) | |
2643 | { | |
976ca316 | 2644 | struct objfile *objfile = per_objfile->objfile; |
ed2dc618 | 2645 | |
96b79293 TT |
2646 | section->read (objfile); |
2647 | abbrev_section->read (objfile); | |
927aa2e7 | 2648 | |
976ca316 SM |
2649 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
2650 | per_objfile->per_bfd->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2651 | |
298e9637 | 2652 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2653 | |
2654 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2655 | { | |
2656 | struct signatured_type *sig_type; | |
927aa2e7 | 2657 | void **slot; |
927aa2e7 JK |
2658 | |
2659 | sect_offset sect_off | |
2660 | = (sect_offset) (extract_unsigned_integer | |
2661 | (map.tu_table_reordered + i * map.offset_size, | |
2662 | map.offset_size, | |
2663 | map.dwarf5_byte_order)); | |
2664 | ||
2665 | comp_unit_head cu_header; | |
976ca316 | 2666 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 | 2667 | abbrev_section, |
927aa2e7 JK |
2668 | section->buffer + to_underlying (sect_off), |
2669 | rcuh_kind::TYPE); | |
2670 | ||
976ca316 | 2671 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
927aa2e7 JK |
2672 | sig_type->signature = cu_header.signature; |
2673 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2674 | sig_type->per_cu.is_debug_types = 1; | |
2675 | sig_type->per_cu.section = section; | |
2676 | sig_type->per_cu.sect_off = sect_off; | |
927aa2e7 | 2677 | sig_type->per_cu.v.quick |
976ca316 | 2678 | = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
927aa2e7 JK |
2679 | struct dwarf2_per_cu_quick_data); |
2680 | ||
b0b6a987 | 2681 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2682 | *slot = sig_type; |
2683 | ||
976ca316 | 2684 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2685 | } |
2686 | ||
976ca316 | 2687 | per_objfile->per_bfd->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2688 | } |
2689 | ||
9291a0cd TT |
2690 | /* Read the address map data from the mapped index, and use it to |
2691 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2692 | |
9291a0cd | 2693 | static void |
976ca316 | 2694 | create_addrmap_from_index (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 2695 | struct mapped_index *index) |
9291a0cd | 2696 | { |
976ca316 | 2697 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 2698 | struct gdbarch *gdbarch = objfile->arch (); |
9291a0cd | 2699 | const gdb_byte *iter, *end; |
9291a0cd | 2700 | struct addrmap *mutable_map; |
9291a0cd TT |
2701 | CORE_ADDR baseaddr; |
2702 | ||
8268c778 PA |
2703 | auto_obstack temp_obstack; |
2704 | ||
9291a0cd TT |
2705 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2706 | ||
f00a2de2 PA |
2707 | iter = index->address_table.data (); |
2708 | end = iter + index->address_table.size (); | |
9291a0cd | 2709 | |
b3b3bada | 2710 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2711 | |
2712 | while (iter < end) | |
2713 | { | |
2714 | ULONGEST hi, lo, cu_index; | |
2715 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2716 | iter += 8; | |
2717 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2718 | iter += 8; | |
2719 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2720 | iter += 4; | |
f652bce2 | 2721 | |
24a55014 | 2722 | if (lo > hi) |
f652bce2 | 2723 | { |
b98664d3 | 2724 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2725 | hex_string (lo), hex_string (hi)); |
24a55014 | 2726 | continue; |
f652bce2 | 2727 | } |
24a55014 | 2728 | |
976ca316 | 2729 | if (cu_index >= per_objfile->per_bfd->all_comp_units.size ()) |
f652bce2 | 2730 | { |
b98664d3 | 2731 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2732 | (unsigned) cu_index); |
24a55014 | 2733 | continue; |
f652bce2 | 2734 | } |
24a55014 | 2735 | |
79748972 TT |
2736 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2737 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2738 | addrmap_set_empty (mutable_map, lo, hi - 1, |
976ca316 | 2739 | per_objfile->per_bfd->get_cu (cu_index)); |
9291a0cd TT |
2740 | } |
2741 | ||
d320c2b5 | 2742 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2743 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2744 | } |
2745 | ||
927aa2e7 JK |
2746 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2747 | populate the objfile's psymtabs_addrmap. */ | |
2748 | ||
2749 | static void | |
976ca316 | 2750 | create_addrmap_from_aranges (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2751 | struct dwarf2_section_info *section) |
2752 | { | |
976ca316 | 2753 | struct objfile *objfile = per_objfile->objfile; |
927aa2e7 | 2754 | bfd *abfd = objfile->obfd; |
08feed99 | 2755 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 2756 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2757 | |
2758 | auto_obstack temp_obstack; | |
2759 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2760 | ||
2761 | std::unordered_map<sect_offset, | |
2762 | dwarf2_per_cu_data *, | |
2763 | gdb::hash_enum<sect_offset>> | |
2764 | debug_info_offset_to_per_cu; | |
976ca316 | 2765 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 2766 | { |
927aa2e7 JK |
2767 | const auto insertpair |
2768 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2769 | if (!insertpair.second) | |
2770 | { | |
2771 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2772 | "debug_info_offset %s, ignoring .debug_aranges."), |
2773 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2774 | return; |
2775 | } | |
2776 | } | |
2777 | ||
96b79293 | 2778 | section->read (objfile); |
927aa2e7 JK |
2779 | |
2780 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2781 | ||
2782 | const gdb_byte *addr = section->buffer; | |
2783 | ||
2784 | while (addr < section->buffer + section->size) | |
2785 | { | |
2786 | const gdb_byte *const entry_addr = addr; | |
2787 | unsigned int bytes_read; | |
2788 | ||
2789 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2790 | &bytes_read); | |
2791 | addr += bytes_read; | |
2792 | ||
2793 | const gdb_byte *const entry_end = addr + entry_length; | |
2794 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2795 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2796 | if (addr + entry_length > section->buffer + section->size) | |
2797 | { | |
47e3f474 | 2798 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2799 | "length %s exceeds section length %s, " |
2800 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2801 | objfile_name (objfile), |
2802 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2803 | plongest (bytes_read + entry_length), |
2804 | pulongest (section->size)); | |
2805 | return; | |
2806 | } | |
2807 | ||
2808 | /* The version number. */ | |
2809 | const uint16_t version = read_2_bytes (abfd, addr); | |
2810 | addr += 2; | |
2811 | if (version != 2) | |
2812 | { | |
47e3f474 | 2813 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2814 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2815 | objfile_name (objfile), |
2816 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2817 | return; |
2818 | } | |
2819 | ||
2820 | const uint64_t debug_info_offset | |
2821 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2822 | addr += offset_size; | |
2823 | const auto per_cu_it | |
2824 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2825 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2826 | { | |
47e3f474 | 2827 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2828 | "debug_info_offset %s does not exists, " |
2829 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2830 | objfile_name (objfile), |
2831 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2832 | pulongest (debug_info_offset)); |
2833 | return; | |
2834 | } | |
2835 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2836 | ||
2837 | const uint8_t address_size = *addr++; | |
2838 | if (address_size < 1 || address_size > 8) | |
2839 | { | |
47e3f474 | 2840 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2841 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2842 | objfile_name (objfile), |
2843 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2844 | return; |
2845 | } | |
2846 | ||
2847 | const uint8_t segment_selector_size = *addr++; | |
2848 | if (segment_selector_size != 0) | |
2849 | { | |
47e3f474 | 2850 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2851 | "segment_selector_size %u is not supported, " |
2852 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2853 | objfile_name (objfile), |
2854 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2855 | segment_selector_size); |
2856 | return; | |
2857 | } | |
2858 | ||
2859 | /* Must pad to an alignment boundary that is twice the address | |
2860 | size. It is undocumented by the DWARF standard but GCC does | |
2861 | use it. */ | |
2862 | for (size_t padding = ((-(addr - section->buffer)) | |
2863 | & (2 * address_size - 1)); | |
2864 | padding > 0; padding--) | |
2865 | if (*addr++ != 0) | |
2866 | { | |
47e3f474 | 2867 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2868 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2869 | objfile_name (objfile), |
2870 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2871 | return; |
2872 | } | |
2873 | ||
2874 | for (;;) | |
2875 | { | |
2876 | if (addr + 2 * address_size > entry_end) | |
2877 | { | |
47e3f474 | 2878 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2879 | "address list is not properly terminated, " |
2880 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2881 | objfile_name (objfile), |
2882 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2883 | return; |
2884 | } | |
2885 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2886 | dwarf5_byte_order); | |
2887 | addr += address_size; | |
2888 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2889 | dwarf5_byte_order); | |
2890 | addr += address_size; | |
2891 | if (start == 0 && length == 0) | |
2892 | break; | |
976ca316 | 2893 | if (start == 0 && !per_objfile->per_bfd->has_section_at_zero) |
927aa2e7 JK |
2894 | { |
2895 | /* Symbol was eliminated due to a COMDAT group. */ | |
2896 | continue; | |
2897 | } | |
2898 | ULONGEST end = start + length; | |
79748972 TT |
2899 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
2900 | - baseaddr); | |
2901 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
2902 | - baseaddr); | |
927aa2e7 JK |
2903 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
2904 | } | |
2905 | } | |
2906 | ||
d320c2b5 | 2907 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2908 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
2909 | } |
2910 | ||
9291a0cd TT |
2911 | /* Find a slot in the mapped index INDEX for the object named NAME. |
2912 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
2913 | constant pool and return true. If NAME cannot be found, return |
2914 | false. */ | |
2fdf6df6 | 2915 | |
109483d9 | 2916 | static bool |
9291a0cd TT |
2917 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
2918 | offset_type **vec_out) | |
2919 | { | |
0cf03b49 | 2920 | offset_type hash; |
9291a0cd | 2921 | offset_type slot, step; |
559a7a62 | 2922 | int (*cmp) (const char *, const char *); |
9291a0cd | 2923 | |
791afaa2 | 2924 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 2925 | if (current_language->la_language == language_cplus |
45280282 IB |
2926 | || current_language->la_language == language_fortran |
2927 | || current_language->la_language == language_d) | |
0cf03b49 JK |
2928 | { |
2929 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2930 | not contain any. */ | |
a8719064 | 2931 | |
72998fb3 | 2932 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2933 | { |
109483d9 | 2934 | without_params = cp_remove_params (name); |
0cf03b49 | 2935 | |
72998fb3 | 2936 | if (without_params != NULL) |
791afaa2 | 2937 | name = without_params.get (); |
0cf03b49 JK |
2938 | } |
2939 | } | |
2940 | ||
559a7a62 | 2941 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2942 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2943 | simulate our NAME being searched is also lowercased. */ |
2944 | hash = mapped_index_string_hash ((index->version == 4 | |
2945 | && case_sensitivity == case_sensitive_off | |
2946 | ? 5 : index->version), | |
2947 | name); | |
2948 | ||
f00a2de2 PA |
2949 | slot = hash & (index->symbol_table.size () - 1); |
2950 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 2951 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2952 | |
2953 | for (;;) | |
2954 | { | |
9291a0cd | 2955 | const char *str; |
f00a2de2 PA |
2956 | |
2957 | const auto &bucket = index->symbol_table[slot]; | |
2958 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 2959 | return false; |
9291a0cd | 2960 | |
f00a2de2 | 2961 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 2962 | if (!cmp (name, str)) |
9291a0cd TT |
2963 | { |
2964 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 2965 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 2966 | return true; |
9291a0cd TT |
2967 | } |
2968 | ||
f00a2de2 | 2969 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
2970 | } |
2971 | } | |
2972 | ||
4485a1c1 SM |
2973 | /* A helper function that reads the .gdb_index from BUFFER and fills |
2974 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 2975 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
2976 | ok to use deprecated sections. |
2977 | ||
2978 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2979 | out parameters that are filled in with information about the CU and | |
2980 | TU lists in the section. | |
2981 | ||
4485a1c1 | 2982 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 2983 | |
d33bc52e | 2984 | static bool |
3810f182 | 2985 | read_gdb_index_from_buffer (const char *filename, |
4485a1c1 SM |
2986 | bool deprecated_ok, |
2987 | gdb::array_view<const gdb_byte> buffer, | |
2988 | struct mapped_index *map, | |
2989 | const gdb_byte **cu_list, | |
2990 | offset_type *cu_list_elements, | |
2991 | const gdb_byte **types_list, | |
2992 | offset_type *types_list_elements) | |
2993 | { | |
2994 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 2995 | |
9291a0cd | 2996 | /* Version check. */ |
4485a1c1 | 2997 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2998 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2999 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3000 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3001 | indices. */ |
831adc1f | 3002 | if (version < 4) |
481860b3 GB |
3003 | { |
3004 | static int warning_printed = 0; | |
3005 | if (!warning_printed) | |
3006 | { | |
3007 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3008 | filename); |
481860b3 GB |
3009 | warning_printed = 1; |
3010 | } | |
3011 | return 0; | |
3012 | } | |
3013 | /* Index version 4 uses a different hash function than index version | |
3014 | 5 and later. | |
3015 | ||
3016 | Versions earlier than 6 did not emit psymbols for inlined | |
3017 | functions. Using these files will cause GDB not to be able to | |
3018 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3019 | indices unless the user has done |
3020 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3021 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3022 | { |
3023 | static int warning_printed = 0; | |
3024 | if (!warning_printed) | |
3025 | { | |
e615022a DE |
3026 | warning (_("\ |
3027 | Skipping deprecated .gdb_index section in %s.\n\ | |
3028 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3029 | to use the section anyway."), | |
2ec9a5e0 | 3030 | filename); |
481860b3 GB |
3031 | warning_printed = 1; |
3032 | } | |
3033 | return 0; | |
3034 | } | |
796a7ff8 | 3035 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3036 | of the TU (for symbols coming from TUs), |
3037 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3038 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3039 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3040 | These are just performance bugs, and we can't distinguish gdb-generated | |
3041 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3042 | |
481860b3 | 3043 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3044 | longer backward compatible. */ |
796a7ff8 | 3045 | if (version > 8) |
594e8718 | 3046 | return 0; |
9291a0cd | 3047 | |
559a7a62 | 3048 | map->version = version; |
9291a0cd | 3049 | |
4485a1c1 | 3050 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3051 | |
4485a1c1 | 3052 | int i = 0; |
2ec9a5e0 TT |
3053 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3054 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3055 | / 8); | |
1fd400ff TT |
3056 | ++i; |
3057 | ||
2ec9a5e0 TT |
3058 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3059 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3060 | - MAYBE_SWAP (metadata[i])) | |
3061 | / 8); | |
987d643c | 3062 | ++i; |
1fd400ff | 3063 | |
f00a2de2 PA |
3064 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3065 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3066 | map->address_table | |
3067 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3068 | ++i; |
3069 | ||
f00a2de2 PA |
3070 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3071 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3072 | map->symbol_table | |
3073 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3074 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3075 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3076 | |
f00a2de2 | 3077 | ++i; |
f9d83a0b | 3078 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3079 | |
2ec9a5e0 TT |
3080 | return 1; |
3081 | } | |
3082 | ||
4485a1c1 SM |
3083 | /* Callback types for dwarf2_read_gdb_index. */ |
3084 | ||
3085 | typedef gdb::function_view | |
5989a64e | 3086 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_bfd *)> |
4485a1c1 SM |
3087 | get_gdb_index_contents_ftype; |
3088 | typedef gdb::function_view | |
3089 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3090 | get_gdb_index_contents_dwz_ftype; | |
3091 | ||
927aa2e7 | 3092 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3093 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3094 | ||
3095 | static int | |
4485a1c1 | 3096 | dwarf2_read_gdb_index |
976ca316 | 3097 | (dwarf2_per_objfile *per_objfile, |
4485a1c1 SM |
3098 | get_gdb_index_contents_ftype get_gdb_index_contents, |
3099 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3100 | { |
2ec9a5e0 TT |
3101 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3102 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3103 | struct dwz_file *dwz; |
976ca316 | 3104 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 3105 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
2ec9a5e0 | 3106 | |
4485a1c1 | 3107 | gdb::array_view<const gdb_byte> main_index_contents |
f8c41851 | 3108 | = get_gdb_index_contents (objfile, per_bfd); |
4485a1c1 SM |
3109 | |
3110 | if (main_index_contents.empty ()) | |
3111 | return 0; | |
3112 | ||
3063847f | 3113 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
3810f182 | 3114 | if (!read_gdb_index_from_buffer (objfile_name (objfile), |
4485a1c1 SM |
3115 | use_deprecated_index_sections, |
3116 | main_index_contents, map.get (), &cu_list, | |
3117 | &cu_list_elements, &types_list, | |
3118 | &types_list_elements)) | |
2ec9a5e0 TT |
3119 | return 0; |
3120 | ||
0fefef59 | 3121 | /* Don't use the index if it's empty. */ |
3063847f | 3122 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3123 | return 0; |
3124 | ||
2ec9a5e0 TT |
3125 | /* If there is a .dwz file, read it so we can get its CU list as |
3126 | well. */ | |
f8c41851 | 3127 | dwz = dwarf2_get_dwz_file (per_bfd); |
4db1a1dc | 3128 | if (dwz != NULL) |
2ec9a5e0 | 3129 | { |
2ec9a5e0 TT |
3130 | struct mapped_index dwz_map; |
3131 | const gdb_byte *dwz_types_ignore; | |
3132 | offset_type dwz_types_elements_ignore; | |
3133 | ||
4485a1c1 SM |
3134 | gdb::array_view<const gdb_byte> dwz_index_content |
3135 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3136 | ||
3137 | if (dwz_index_content.empty ()) | |
3138 | return 0; | |
3139 | ||
3810f182 | 3140 | if (!read_gdb_index_from_buffer (bfd_get_filename (dwz->dwz_bfd.get ()), |
00f93c44 | 3141 | 1, dwz_index_content, &dwz_map, |
4485a1c1 SM |
3142 | &dwz_list, &dwz_list_elements, |
3143 | &dwz_types_ignore, | |
3144 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3145 | { |
3146 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3147 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3148 | return 0; |
3149 | } | |
3150 | } | |
3151 | ||
f8c41851 SM |
3152 | create_cus_from_index (per_bfd, cu_list, cu_list_elements, dwz_list, |
3153 | dwz_list_elements); | |
1fd400ff | 3154 | |
8b70b953 TT |
3155 | if (types_list_elements) |
3156 | { | |
8b70b953 TT |
3157 | /* We can only handle a single .debug_types when we have an |
3158 | index. */ | |
f8c41851 | 3159 | if (per_bfd->types.size () != 1) |
8b70b953 TT |
3160 | return 0; |
3161 | ||
f8c41851 | 3162 | dwarf2_section_info *section = &per_bfd->types[0]; |
8b70b953 | 3163 | |
f8c41851 | 3164 | create_signatured_type_table_from_index (per_bfd, section, types_list, |
168c9250 | 3165 | types_list_elements); |
8b70b953 | 3166 | } |
9291a0cd | 3167 | |
976ca316 | 3168 | create_addrmap_from_index (per_objfile, map.get ()); |
9291a0cd | 3169 | |
f8c41851 SM |
3170 | per_bfd->index_table = std::move (map); |
3171 | per_bfd->using_index = 1; | |
3172 | per_bfd->quick_file_names_table = | |
3173 | create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
3174 | ||
3175 | /* Save partial symtabs in the per_bfd object, for the benefit of subsequent | |
3176 | objfiles using the same BFD. */ | |
3177 | gdb_assert (per_bfd->partial_symtabs == nullptr); | |
3178 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
9291a0cd TT |
3179 | |
3180 | return 1; | |
3181 | } | |
3182 | ||
dee91e82 | 3183 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3184 | |
dee91e82 DE |
3185 | static void |
3186 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3187 | const gdb_byte *info_ptr, |
3e225074 | 3188 | struct die_info *comp_unit_die) |
9291a0cd | 3189 | { |
dee91e82 | 3190 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3191 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
976ca316 | 3192 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
094b34ac | 3193 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3194 | struct attribute *attr; |
7b9f3c50 DE |
3195 | void **slot; |
3196 | struct quick_file_names *qfn; | |
9291a0cd | 3197 | |
0186c6a7 DE |
3198 | gdb_assert (! this_cu->is_debug_types); |
3199 | ||
07261596 TT |
3200 | /* Our callers never want to match partial units -- instead they |
3201 | will match the enclosing full CU. */ | |
3202 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3203 | { | |
3204 | this_cu->v.quick->no_file_data = 1; | |
3205 | return; | |
3206 | } | |
3207 | ||
0186c6a7 | 3208 | lh_cu = this_cu; |
7b9f3c50 | 3209 | slot = NULL; |
dee91e82 | 3210 | |
fff8551c | 3211 | line_header_up lh; |
9c541725 | 3212 | sect_offset line_offset {}; |
fff8551c | 3213 | |
dee91e82 | 3214 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
435d3d88 | 3215 | if (attr != nullptr) |
9291a0cd | 3216 | { |
7b9f3c50 DE |
3217 | struct quick_file_names find_entry; |
3218 | ||
9c541725 | 3219 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3220 | |
3221 | /* We may have already read in this line header (TU line header sharing). | |
3222 | If we have we're done. */ | |
094b34ac | 3223 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3224 | find_entry.hash.line_sect_off = line_offset; |
976ca316 | 3225 | slot = htab_find_slot (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 DE |
3226 | &find_entry, INSERT); |
3227 | if (*slot != NULL) | |
3228 | { | |
9a3c8263 | 3229 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3230 | return; |
7b9f3c50 DE |
3231 | } |
3232 | ||
3019eac3 | 3233 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3234 | } |
3235 | if (lh == NULL) | |
3236 | { | |
094b34ac | 3237 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3238 | return; |
9291a0cd TT |
3239 | } |
3240 | ||
976ca316 | 3241 | qfn = XOBNEW (&per_objfile->per_bfd->obstack, struct quick_file_names); |
094b34ac | 3242 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3243 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3244 | gdb_assert (slot != NULL); |
3245 | *slot = qfn; | |
9291a0cd | 3246 | |
d721ba37 | 3247 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3248 | |
aa391654 TT |
3249 | int offset = 0; |
3250 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3251 | ++offset; | |
3252 | ||
7ba99d21 | 3253 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3254 | qfn->file_names = |
976ca316 | 3255 | XOBNEWVEC (&per_objfile->per_bfd->obstack, const char *, |
45940949 | 3256 | qfn->num_file_names); |
aa391654 TT |
3257 | if (offset != 0) |
3258 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3259 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3260 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3261 | fnd.comp_dir).release (); | |
7b9f3c50 | 3262 | qfn->real_names = NULL; |
9291a0cd | 3263 | |
094b34ac | 3264 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3265 | } |
3266 | ||
3267 | /* A helper for the "quick" functions which attempts to read the line | |
3268 | table for THIS_CU. */ | |
3269 | ||
3270 | static struct quick_file_names * | |
ab432490 SM |
3271 | dw2_get_file_names (dwarf2_per_cu_data *this_cu, |
3272 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 3273 | { |
0186c6a7 DE |
3274 | /* This should never be called for TUs. */ |
3275 | gdb_assert (! this_cu->is_debug_types); | |
3276 | /* Nor type unit groups. */ | |
197400e8 | 3277 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3278 | |
dee91e82 DE |
3279 | if (this_cu->v.quick->file_names != NULL) |
3280 | return this_cu->v.quick->file_names; | |
3281 | /* If we know there is no line data, no point in looking again. */ | |
3282 | if (this_cu->v.quick->no_file_data) | |
3283 | return NULL; | |
3284 | ||
ab432490 | 3285 | cutu_reader reader (this_cu, per_objfile); |
c0ab21c2 | 3286 | if (!reader.dummy_p) |
3e225074 | 3287 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die); |
dee91e82 DE |
3288 | |
3289 | if (this_cu->v.quick->no_file_data) | |
3290 | return NULL; | |
3291 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3292 | } |
3293 | ||
3294 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3295 | real path for a given file name from the line table. */ |
2fdf6df6 | 3296 | |
9291a0cd | 3297 | static const char * |
976ca316 | 3298 | dw2_get_real_path (dwarf2_per_objfile *per_objfile, |
7b9f3c50 | 3299 | struct quick_file_names *qfn, int index) |
9291a0cd | 3300 | { |
7b9f3c50 | 3301 | if (qfn->real_names == NULL) |
976ca316 | 3302 | qfn->real_names = OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
26f2dc30 | 3303 | qfn->num_file_names, const char *); |
9291a0cd | 3304 | |
7b9f3c50 | 3305 | if (qfn->real_names[index] == NULL) |
14278e1f | 3306 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3307 | |
7b9f3c50 | 3308 | return qfn->real_names[index]; |
9291a0cd TT |
3309 | } |
3310 | ||
3311 | static struct symtab * | |
3312 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3313 | { | |
976ca316 SM |
3314 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3315 | dwarf2_per_cu_data *dwarf_cu = per_objfile->per_bfd->all_comp_units.back (); | |
3316 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, per_objfile, false); | |
ae2de4f8 | 3317 | |
43f3e411 DE |
3318 | if (cust == NULL) |
3319 | return NULL; | |
ed2dc618 | 3320 | |
43f3e411 | 3321 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3322 | } |
3323 | ||
7b9f3c50 DE |
3324 | /* Traversal function for dw2_forget_cached_source_info. */ |
3325 | ||
3326 | static int | |
3327 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3328 | { |
7b9f3c50 | 3329 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3330 | |
7b9f3c50 | 3331 | if (file_data->real_names) |
9291a0cd | 3332 | { |
7b9f3c50 | 3333 | int i; |
9291a0cd | 3334 | |
7b9f3c50 | 3335 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3336 | { |
7b9f3c50 DE |
3337 | xfree ((void*) file_data->real_names[i]); |
3338 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3339 | } |
3340 | } | |
7b9f3c50 DE |
3341 | |
3342 | return 1; | |
3343 | } | |
3344 | ||
3345 | static void | |
3346 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3347 | { | |
976ca316 | 3348 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
7b9f3c50 | 3349 | |
976ca316 | 3350 | htab_traverse_noresize (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 | 3351 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3352 | } |
3353 | ||
f8eba3c6 TT |
3354 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3355 | the symtabs and calls the iterator. */ | |
3356 | ||
3357 | static int | |
3358 | dw2_map_expand_apply (struct objfile *objfile, | |
3359 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3360 | const char *name, const char *real_path, |
14bc53a8 | 3361 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3362 | { |
43f3e411 | 3363 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3364 | |
3365 | /* Don't visit already-expanded CUs. */ | |
af758d11 SM |
3366 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3367 | if (per_objfile->symtab_set_p (per_cu)) | |
f8eba3c6 TT |
3368 | return 0; |
3369 | ||
3370 | /* This may expand more than one symtab, and we want to iterate over | |
3371 | all of them. */ | |
97a1449a | 3372 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
f8eba3c6 | 3373 | |
14bc53a8 PA |
3374 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3375 | last_made, callback); | |
f8eba3c6 TT |
3376 | } |
3377 | ||
3378 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3379 | ||
14bc53a8 PA |
3380 | static bool |
3381 | dw2_map_symtabs_matching_filename | |
3382 | (struct objfile *objfile, const char *name, const char *real_path, | |
3383 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3384 | { |
c011a4f4 | 3385 | const char *name_basename = lbasename (name); |
976ca316 | 3386 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 3387 | |
848e3e78 DE |
3388 | /* The rule is CUs specify all the files, including those used by |
3389 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3390 | |
976ca316 | 3391 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3392 | { |
3d7bb9d9 | 3393 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3394 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3395 | continue; |
3396 | ||
976ca316 | 3397 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3398 | if (file_data == NULL) |
9291a0cd TT |
3399 | continue; |
3400 | ||
b76e467d | 3401 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3402 | { |
7b9f3c50 | 3403 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3404 | const char *this_real_name; |
9291a0cd | 3405 | |
af529f8f | 3406 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3407 | { |
f5b95b50 | 3408 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3409 | callback)) |
3410 | return true; | |
288e77a7 | 3411 | continue; |
4aac40c8 | 3412 | } |
9291a0cd | 3413 | |
c011a4f4 DE |
3414 | /* Before we invoke realpath, which can get expensive when many |
3415 | files are involved, do a quick comparison of the basenames. */ | |
3416 | if (! basenames_may_differ | |
3417 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3418 | continue; | |
3419 | ||
976ca316 | 3420 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
da235a7c | 3421 | if (compare_filenames_for_search (this_real_name, name)) |
9291a0cd | 3422 | { |
da235a7c | 3423 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3424 | callback)) |
3425 | return true; | |
288e77a7 | 3426 | continue; |
da235a7c | 3427 | } |
9291a0cd | 3428 | |
da235a7c JK |
3429 | if (real_path != NULL) |
3430 | { | |
af529f8f JK |
3431 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3432 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3433 | if (this_real_name != NULL |
af529f8f | 3434 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3435 | { |
f5b95b50 | 3436 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3437 | callback)) |
3438 | return true; | |
288e77a7 | 3439 | continue; |
9291a0cd TT |
3440 | } |
3441 | } | |
3442 | } | |
3443 | } | |
3444 | ||
14bc53a8 | 3445 | return false; |
9291a0cd TT |
3446 | } |
3447 | ||
da51c347 DE |
3448 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3449 | ||
3450 | struct dw2_symtab_iterator | |
9291a0cd | 3451 | { |
ed2dc618 | 3452 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
976ca316 | 3453 | dwarf2_per_objfile *per_objfile; |
2b79f376 SM |
3454 | /* If set, only look for symbols that match that block. Valid values are |
3455 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3456 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3457 | /* The kind of symbol we're looking for. */ |
3458 | domain_enum domain; | |
3459 | /* The list of CUs from the index entry of the symbol, | |
3460 | or NULL if not found. */ | |
3461 | offset_type *vec; | |
3462 | /* The next element in VEC to look at. */ | |
3463 | int next; | |
3464 | /* The number of elements in VEC, or zero if there is no match. */ | |
3465 | int length; | |
8943b874 DE |
3466 | /* Have we seen a global version of the symbol? |
3467 | If so we can ignore all further global instances. | |
3468 | This is to work around gold/15646, inefficient gold-generated | |
3469 | indices. */ | |
3470 | int global_seen; | |
da51c347 | 3471 | }; |
9291a0cd | 3472 | |
e5f3ece2 | 3473 | /* Initialize the index symtab iterator ITER, common part. */ |
2fdf6df6 | 3474 | |
9291a0cd | 3475 | static void |
e5f3ece2 TV |
3476 | dw2_symtab_iter_init_common (struct dw2_symtab_iterator *iter, |
3477 | dwarf2_per_objfile *per_objfile, | |
3478 | gdb::optional<block_enum> block_index, | |
3479 | domain_enum domain) | |
da51c347 | 3480 | { |
976ca316 | 3481 | iter->per_objfile = per_objfile; |
da51c347 DE |
3482 | iter->block_index = block_index; |
3483 | iter->domain = domain; | |
3484 | iter->next = 0; | |
8943b874 | 3485 | iter->global_seen = 0; |
e5f3ece2 TV |
3486 | iter->vec = NULL; |
3487 | iter->length = 0; | |
3488 | } | |
da51c347 | 3489 | |
e5f3ece2 TV |
3490 | /* Initialize the index symtab iterator ITER, const char *NAME variant. */ |
3491 | ||
3492 | static void | |
3493 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3494 | dwarf2_per_objfile *per_objfile, | |
3495 | gdb::optional<block_enum> block_index, | |
3496 | domain_enum domain, | |
3497 | const char *name) | |
3498 | { | |
3499 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
ed2dc618 | 3500 | |
e5f3ece2 | 3501 | mapped_index *index = per_objfile->per_bfd->index_table.get (); |
ed2dc618 | 3502 | /* index is NULL if OBJF_READNOW. */ |
e5f3ece2 TV |
3503 | if (index == NULL) |
3504 | return; | |
3505 | ||
3506 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 | 3507 | iter->length = MAYBE_SWAP (*iter->vec); |
e5f3ece2 TV |
3508 | } |
3509 | ||
3510 | /* Initialize the index symtab iterator ITER, offset_type NAMEI variant. */ | |
3511 | ||
3512 | static void | |
3513 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3514 | dwarf2_per_objfile *per_objfile, | |
3515 | gdb::optional<block_enum> block_index, | |
3516 | domain_enum domain, offset_type namei) | |
3517 | { | |
3518 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
3519 | ||
3520 | mapped_index *index = per_objfile->per_bfd->index_table.get (); | |
3521 | /* index is NULL if OBJF_READNOW. */ | |
3522 | if (index == NULL) | |
3523 | return; | |
3524 | ||
3525 | gdb_assert (!index->symbol_name_slot_invalid (namei)); | |
3526 | const auto &bucket = index->symbol_table[namei]; | |
3527 | ||
3528 | iter->vec = (offset_type *) (index->constant_pool | |
3529 | + MAYBE_SWAP (bucket.vec)); | |
3530 | iter->length = MAYBE_SWAP (*iter->vec); | |
da51c347 DE |
3531 | } |
3532 | ||
3533 | /* Return the next matching CU or NULL if there are no more. */ | |
3534 | ||
3535 | static struct dwarf2_per_cu_data * | |
3536 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3537 | { | |
976ca316 | 3538 | dwarf2_per_objfile *per_objfile = iter->per_objfile; |
ed2dc618 | 3539 | |
da51c347 DE |
3540 | for ( ; iter->next < iter->length; ++iter->next) |
3541 | { | |
3542 | offset_type cu_index_and_attrs = | |
3543 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3544 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3545 | gdb_index_symbol_kind symbol_kind = |
3546 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3547 | /* Only check the symbol attributes if they're present. | |
3548 | Indices prior to version 7 don't record them, | |
3549 | and indices >= 7 may elide them for certain symbols | |
3550 | (gold does this). */ | |
3551 | int attrs_valid = | |
976ca316 | 3552 | (per_objfile->per_bfd->index_table->version >= 7 |
da51c347 DE |
3553 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3554 | ||
3190f0c6 | 3555 | /* Don't crash on bad data. */ |
976ca316 SM |
3556 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
3557 | + per_objfile->per_bfd->all_type_units.size ())) | |
3190f0c6 | 3558 | { |
b98664d3 | 3559 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 3560 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
3190f0c6 DE |
3561 | continue; |
3562 | } | |
3563 | ||
976ca316 | 3564 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
3190f0c6 | 3565 | |
da51c347 | 3566 | /* Skip if already read in. */ |
976ca316 | 3567 | if (per_objfile->symtab_set_p (per_cu)) |
da51c347 DE |
3568 | continue; |
3569 | ||
8943b874 DE |
3570 | /* Check static vs global. */ |
3571 | if (attrs_valid) | |
3572 | { | |
2b79f376 SM |
3573 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3574 | ||
3575 | if (iter->block_index.has_value ()) | |
3576 | { | |
3577 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3578 | ||
3579 | if (is_static != want_static) | |
3580 | continue; | |
3581 | } | |
3582 | ||
8943b874 | 3583 | /* Work around gold/15646. */ |
f030440d TV |
3584 | if (!is_static |
3585 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
3586 | { | |
3587 | if (iter->global_seen) | |
3588 | continue; | |
3589 | ||
3590 | iter->global_seen = 1; | |
3591 | } | |
8943b874 | 3592 | } |
da51c347 DE |
3593 | |
3594 | /* Only check the symbol's kind if it has one. */ | |
3595 | if (attrs_valid) | |
3596 | { | |
3597 | switch (iter->domain) | |
3598 | { | |
3599 | case VAR_DOMAIN: | |
3600 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3601 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3602 | /* Some types are also in VAR_DOMAIN. */ | |
3603 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3604 | continue; | |
3605 | break; | |
3606 | case STRUCT_DOMAIN: | |
3607 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3608 | continue; | |
3609 | break; | |
3610 | case LABEL_DOMAIN: | |
3611 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3612 | continue; | |
3613 | break; | |
59c35742 AB |
3614 | case MODULE_DOMAIN: |
3615 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3616 | continue; | |
3617 | break; | |
da51c347 DE |
3618 | default: |
3619 | break; | |
3620 | } | |
3621 | } | |
3622 | ||
3623 | ++iter->next; | |
3624 | return per_cu; | |
3625 | } | |
3626 | ||
3627 | return NULL; | |
3628 | } | |
3629 | ||
43f3e411 | 3630 | static struct compunit_symtab * |
c7f839cb | 3631 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3632 | const char *name, domain_enum domain) |
9291a0cd | 3633 | { |
43f3e411 | 3634 | struct compunit_symtab *stab_best = NULL; |
976ca316 | 3635 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 3636 | |
b5ec771e PA |
3637 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3638 | ||
ed2dc618 SM |
3639 | struct dw2_symtab_iterator iter; |
3640 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3641 | |
976ca316 | 3642 | dw2_symtab_iter_init (&iter, per_objfile, block_index, domain, name); |
9291a0cd | 3643 | |
ed2dc618 SM |
3644 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3645 | { | |
3646 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 3647 | struct compunit_symtab *stab |
976ca316 | 3648 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
ed2dc618 | 3649 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3650 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3651 | |
ed2dc618 SM |
3652 | sym = block_find_symbol (block, name, domain, |
3653 | block_find_non_opaque_type_preferred, | |
3654 | &with_opaque); | |
b2e2f908 | 3655 | |
ed2dc618 SM |
3656 | /* Some caution must be observed with overloaded functions |
3657 | and methods, since the index will not contain any overload | |
3658 | information (but NAME might contain it). */ | |
da51c347 | 3659 | |
ed2dc618 SM |
3660 | if (sym != NULL |
3661 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3662 | return stab; | |
3663 | if (with_opaque != NULL | |
3664 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3665 | stab_best = stab; | |
da51c347 | 3666 | |
ed2dc618 | 3667 | /* Keep looking through other CUs. */ |
9291a0cd | 3668 | } |
9291a0cd | 3669 | |
da51c347 | 3670 | return stab_best; |
9291a0cd TT |
3671 | } |
3672 | ||
3673 | static void | |
3674 | dw2_print_stats (struct objfile *objfile) | |
3675 | { | |
976ca316 SM |
3676 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3677 | int total = (per_objfile->per_bfd->all_comp_units.size () | |
3678 | + per_objfile->per_bfd->all_type_units.size ()); | |
ed2dc618 | 3679 | int count = 0; |
9291a0cd | 3680 | |
ed2dc618 | 3681 | for (int i = 0; i < total; ++i) |
9291a0cd | 3682 | { |
976ca316 | 3683 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3684 | |
976ca316 | 3685 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3686 | ++count; |
3687 | } | |
e4a48d9d | 3688 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3689 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3690 | } | |
3691 | ||
779bd270 DE |
3692 | /* This dumps minimal information about the index. |
3693 | It is called via "mt print objfiles". | |
3694 | One use is to verify .gdb_index has been loaded by the | |
3695 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3696 | ||
9291a0cd TT |
3697 | static void |
3698 | dw2_dump (struct objfile *objfile) | |
3699 | { | |
976ca316 | 3700 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 3701 | |
976ca316 | 3702 | gdb_assert (per_objfile->per_bfd->using_index); |
779bd270 | 3703 | printf_filtered (".gdb_index:"); |
976ca316 | 3704 | if (per_objfile->per_bfd->index_table != NULL) |
779bd270 DE |
3705 | { |
3706 | printf_filtered (" version %d\n", | |
976ca316 | 3707 | per_objfile->per_bfd->index_table->version); |
779bd270 DE |
3708 | } |
3709 | else | |
3710 | printf_filtered (" faked for \"readnow\"\n"); | |
3711 | printf_filtered ("\n"); | |
9291a0cd TT |
3712 | } |
3713 | ||
9291a0cd TT |
3714 | static void |
3715 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3716 | const char *func_name) | |
3717 | { | |
976ca316 | 3718 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
da51c347 | 3719 | |
ed2dc618 SM |
3720 | struct dw2_symtab_iterator iter; |
3721 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3722 | |
976ca316 | 3723 | dw2_symtab_iter_init (&iter, per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3724 | |
ed2dc618 | 3725 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3726 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
da51c347 | 3727 | |
9291a0cd TT |
3728 | } |
3729 | ||
3730 | static void | |
3731 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3732 | { | |
976ca316 SM |
3733 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3734 | int total_units = (per_objfile->per_bfd->all_comp_units.size () | |
3735 | + per_objfile->per_bfd->all_type_units.size ()); | |
9291a0cd | 3736 | |
ed2dc618 | 3737 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3738 | { |
976ca316 | 3739 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3740 | |
58f0c718 TT |
3741 | /* We don't want to directly expand a partial CU, because if we |
3742 | read it with the wrong language, then assertion failures can | |
3743 | be triggered later on. See PR symtab/23010. So, tell | |
3744 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3745 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
976ca316 | 3746 | dw2_instantiate_symtab (per_cu, per_objfile, true); |
9291a0cd TT |
3747 | } |
3748 | } | |
3749 | ||
3750 | static void | |
652a8996 JK |
3751 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3752 | const char *fullname) | |
9291a0cd | 3753 | { |
976ca316 | 3754 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
d4637a04 DE |
3755 | |
3756 | /* We don't need to consider type units here. | |
3757 | This is only called for examining code, e.g. expand_line_sal. | |
3758 | There can be an order of magnitude (or more) more type units | |
3759 | than comp units, and we avoid them if we can. */ | |
3760 | ||
976ca316 | 3761 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3762 | { |
3d7bb9d9 | 3763 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3764 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3765 | continue; |
3766 | ||
976ca316 | 3767 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3768 | if (file_data == NULL) |
9291a0cd TT |
3769 | continue; |
3770 | ||
b76e467d | 3771 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3772 | { |
652a8996 JK |
3773 | const char *this_fullname = file_data->file_names[j]; |
3774 | ||
3775 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3776 | { |
976ca316 | 3777 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
9291a0cd TT |
3778 | break; |
3779 | } | |
3780 | } | |
3781 | } | |
3782 | } | |
3783 | ||
9a0bacfb TV |
3784 | static void |
3785 | dw2_expand_symtabs_matching_symbol | |
3786 | (mapped_index_base &index, | |
3787 | const lookup_name_info &lookup_name_in, | |
3788 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3789 | enum search_domain kind, | |
fcf23d5b SM |
3790 | gdb::function_view<bool (offset_type)> match_callback, |
3791 | dwarf2_per_objfile *per_objfile); | |
9a0bacfb TV |
3792 | |
3793 | static void | |
3794 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
3795 | (dwarf2_per_cu_data *per_cu, |
3796 | dwarf2_per_objfile *per_objfile, | |
9a0bacfb TV |
3797 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3798 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify); | |
3799 | ||
9291a0cd | 3800 | static void |
199b4314 TT |
3801 | dw2_map_matching_symbols |
3802 | (struct objfile *objfile, | |
b054970d | 3803 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3804 | int global, |
3805 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3806 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3807 | { |
1aa98955 | 3808 | /* Used for Ada. */ |
976ca316 | 3809 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
1aa98955 | 3810 | |
9a0bacfb TV |
3811 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
3812 | ||
976ca316 | 3813 | if (per_objfile->per_bfd->index_table != nullptr) |
1aa98955 | 3814 | { |
976ca316 | 3815 | mapped_index &index = *per_objfile->per_bfd->index_table; |
1aa98955 | 3816 | |
9a0bacfb TV |
3817 | const char *match_name = name.ada ().lookup_name ().c_str (); |
3818 | auto matcher = [&] (const char *symname) | |
3819 | { | |
3820 | if (ordered_compare == nullptr) | |
3821 | return true; | |
3822 | return ordered_compare (symname, match_name) == 0; | |
3823 | }; | |
3824 | ||
3825 | dw2_expand_symtabs_matching_symbol (index, name, matcher, ALL_DOMAIN, | |
3826 | [&] (offset_type namei) | |
3827 | { | |
3828 | struct dw2_symtab_iterator iter; | |
3829 | struct dwarf2_per_cu_data *per_cu; | |
3830 | ||
976ca316 | 3831 | dw2_symtab_iter_init (&iter, per_objfile, block_kind, domain, |
e5f3ece2 | 3832 | namei); |
9a0bacfb | 3833 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3834 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 3835 | nullptr); |
9a0bacfb | 3836 | return true; |
976ca316 | 3837 | }, per_objfile); |
9a0bacfb TV |
3838 | } |
3839 | else | |
3840 | { | |
3841 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3842 | proceed assuming all symtabs have been read in. */ | |
3843 | } | |
1aa98955 TV |
3844 | |
3845 | for (compunit_symtab *cust : objfile->compunits ()) | |
3846 | { | |
3847 | const struct block *block; | |
3848 | ||
3849 | if (cust == NULL) | |
3850 | continue; | |
3851 | block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
3852 | if (!iterate_over_symbols_terminated (block, name, | |
3853 | domain, callback)) | |
3854 | return; | |
3855 | } | |
9291a0cd TT |
3856 | } |
3857 | ||
e1ef7d7a PA |
3858 | /* Starting from a search name, return the string that finds the upper |
3859 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3860 | list. Returns the empty string to indicate that the upper bound is | |
3861 | the end of the list. */ | |
3862 | ||
3863 | static std::string | |
3864 | make_sort_after_prefix_name (const char *search_name) | |
3865 | { | |
3866 | /* When looking to complete "func", we find the upper bound of all | |
3867 | symbols that start with "func" by looking for where we'd insert | |
3868 | the closest string that would follow "func" in lexicographical | |
3869 | order. Usually, that's "func"-with-last-character-incremented, | |
3870 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3871 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3872 | Especially mind the 0xff character, which is a valid character in | |
3873 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3874 | rule out compilers allowing it in identifiers. Note that | |
3875 | conveniently, strcmp/strcasecmp are specified to compare | |
3876 | characters interpreted as unsigned char. So what we do is treat | |
3877 | the whole string as a base 256 number composed of a sequence of | |
3878 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3879 | to 0, and carries 1 to the following more-significant position. | |
3880 | If the very first character in SEARCH_NAME ends up incremented | |
3881 | and carries/overflows, then the upper bound is the end of the | |
3882 | list. The string after the empty string is also the empty | |
3883 | string. | |
3884 | ||
3885 | Some examples of this operation: | |
3886 | ||
3887 | SEARCH_NAME => "+1" RESULT | |
3888 | ||
3889 | "abc" => "abd" | |
3890 | "ab\xff" => "ac" | |
3891 | "\xff" "a" "\xff" => "\xff" "b" | |
3892 | "\xff" => "" | |
3893 | "\xff\xff" => "" | |
3894 | "" => "" | |
3895 | ||
3896 | Then, with these symbols for example: | |
3897 | ||
3898 | func | |
3899 | func1 | |
3900 | fund | |
3901 | ||
3902 | completing "func" looks for symbols between "func" and | |
3903 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3904 | which finds "func" and "func1", but not "fund". | |
3905 | ||
3906 | And with: | |
3907 | ||
3908 | funcÿ (Latin1 'ÿ' [0xff]) | |
3909 | funcÿ1 | |
3910 | fund | |
3911 | ||
3912 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3913 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3914 | ||
3915 | And with: | |
3916 | ||
3917 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3918 | ÿÿ1 | |
3919 | ||
3920 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3921 | the end of the list. | |
3922 | */ | |
3923 | std::string after = search_name; | |
3924 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3925 | after.pop_back (); | |
3926 | if (!after.empty ()) | |
3927 | after.back () = (unsigned char) after.back () + 1; | |
3928 | return after; | |
3929 | } | |
3930 | ||
5c58de74 | 3931 | /* See declaration. */ |
61d96d7e | 3932 | |
5c58de74 PA |
3933 | std::pair<std::vector<name_component>::const_iterator, |
3934 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3935 | mapped_index_base::find_name_components_bounds |
fcf23d5b SM |
3936 | (const lookup_name_info &lookup_name_without_params, language lang, |
3937 | dwarf2_per_objfile *per_objfile) const | |
3f563c84 | 3938 | { |
5c58de74 PA |
3939 | auto *name_cmp |
3940 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3941 | |
3b00ef10 | 3942 | const char *lang_name |
e0802d59 | 3943 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 3944 | |
3f563c84 PA |
3945 | /* Comparison function object for lower_bound that matches against a |
3946 | given symbol name. */ | |
3947 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3948 | const char *name) | |
3949 | { | |
fcf23d5b | 3950 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3951 | const char *elem_name = elem_qualified + elem.name_offset; |
3952 | return name_cmp (elem_name, name) < 0; | |
3953 | }; | |
3954 | ||
3955 | /* Comparison function object for upper_bound that matches against a | |
3956 | given symbol name. */ | |
3957 | auto lookup_compare_upper = [&] (const char *name, | |
3958 | const name_component &elem) | |
3959 | { | |
fcf23d5b | 3960 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3961 | const char *elem_name = elem_qualified + elem.name_offset; |
3962 | return name_cmp (name, elem_name) < 0; | |
3963 | }; | |
3964 | ||
5c58de74 PA |
3965 | auto begin = this->name_components.begin (); |
3966 | auto end = this->name_components.end (); | |
3f563c84 PA |
3967 | |
3968 | /* Find the lower bound. */ | |
3969 | auto lower = [&] () | |
3970 | { | |
3b00ef10 | 3971 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3972 | return begin; |
3973 | else | |
3b00ef10 | 3974 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
3975 | } (); |
3976 | ||
3977 | /* Find the upper bound. */ | |
3978 | auto upper = [&] () | |
3979 | { | |
5c58de74 | 3980 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 3981 | { |
e1ef7d7a PA |
3982 | /* In completion mode, we want UPPER to point past all |
3983 | symbols names that have the same prefix. I.e., with | |
3984 | these symbols, and completing "func": | |
3985 | ||
3986 | function << lower bound | |
3987 | function1 | |
3988 | other_function << upper bound | |
3989 | ||
3990 | We find the upper bound by looking for the insertion | |
3991 | point of "func"-with-last-character-incremented, | |
3992 | i.e. "fund". */ | |
3b00ef10 | 3993 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 3994 | if (after.empty ()) |
3f563c84 | 3995 | return end; |
e6b2f5ef PA |
3996 | return std::lower_bound (lower, end, after.c_str (), |
3997 | lookup_compare_lower); | |
3f563c84 PA |
3998 | } |
3999 | else | |
3b00ef10 | 4000 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
4001 | } (); |
4002 | ||
5c58de74 PA |
4003 | return {lower, upper}; |
4004 | } | |
4005 | ||
4006 | /* See declaration. */ | |
4007 | ||
4008 | void | |
fcf23d5b | 4009 | mapped_index_base::build_name_components (dwarf2_per_objfile *per_objfile) |
5c58de74 PA |
4010 | { |
4011 | if (!this->name_components.empty ()) | |
4012 | return; | |
4013 | ||
4014 | this->name_components_casing = case_sensitivity; | |
4015 | auto *name_cmp | |
4016 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4017 | ||
4018 | /* The code below only knows how to break apart components of C++ | |
4019 | symbol names (and other languages that use '::' as | |
3b00ef10 | 4020 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
4021 | auto count = this->symbol_name_count (); |
4022 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4023 | { |
44ed8f3e | 4024 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4025 | continue; |
4026 | ||
fcf23d5b | 4027 | const char *name = this->symbol_name_at (idx, per_objfile); |
5c58de74 PA |
4028 | |
4029 | /* Add each name component to the name component table. */ | |
4030 | unsigned int previous_len = 0; | |
3b00ef10 TT |
4031 | |
4032 | if (strstr (name, "::") != nullptr) | |
4033 | { | |
4034 | for (unsigned int current_len = cp_find_first_component (name); | |
4035 | name[current_len] != '\0'; | |
4036 | current_len += cp_find_first_component (name + current_len)) | |
4037 | { | |
4038 | gdb_assert (name[current_len] == ':'); | |
4039 | this->name_components.push_back ({previous_len, idx}); | |
4040 | /* Skip the '::'. */ | |
4041 | current_len += 2; | |
4042 | previous_len = current_len; | |
4043 | } | |
4044 | } | |
4045 | else | |
5c58de74 | 4046 | { |
3b00ef10 TT |
4047 | /* Handle the Ada encoded (aka mangled) form here. */ |
4048 | for (const char *iter = strstr (name, "__"); | |
4049 | iter != nullptr; | |
4050 | iter = strstr (iter, "__")) | |
4051 | { | |
4052 | this->name_components.push_back ({previous_len, idx}); | |
4053 | iter += 2; | |
4054 | previous_len = iter - name; | |
4055 | } | |
5c58de74 | 4056 | } |
3b00ef10 | 4057 | |
5c58de74 PA |
4058 | this->name_components.push_back ({previous_len, idx}); |
4059 | } | |
4060 | ||
4061 | /* Sort name_components elements by name. */ | |
4062 | auto name_comp_compare = [&] (const name_component &left, | |
4063 | const name_component &right) | |
4064 | { | |
fcf23d5b SM |
4065 | const char *left_qualified |
4066 | = this->symbol_name_at (left.idx, per_objfile); | |
4067 | const char *right_qualified | |
4068 | = this->symbol_name_at (right.idx, per_objfile); | |
5c58de74 PA |
4069 | |
4070 | const char *left_name = left_qualified + left.name_offset; | |
4071 | const char *right_name = right_qualified + right.name_offset; | |
4072 | ||
4073 | return name_cmp (left_name, right_name) < 0; | |
4074 | }; | |
4075 | ||
4076 | std::sort (this->name_components.begin (), | |
4077 | this->name_components.end (), | |
4078 | name_comp_compare); | |
4079 | } | |
4080 | ||
4081 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4082 | mapped_index_base instead of the containing objfile. This is split |
4083 | to a separate function in order to be able to unit test the | |
4084 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4085 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4086 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4087 | |
4088 | static void | |
4089 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4090 | (mapped_index_base &index, |
5c58de74 PA |
4091 | const lookup_name_info &lookup_name_in, |
4092 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4093 | enum search_domain kind, | |
fcf23d5b SM |
4094 | gdb::function_view<bool (offset_type)> match_callback, |
4095 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4096 | { |
4097 | lookup_name_info lookup_name_without_params | |
4098 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4099 | |
4100 | /* Build the symbol name component sorted vector, if we haven't | |
4101 | yet. */ | |
fcf23d5b | 4102 | index.build_name_components (per_objfile); |
5c58de74 | 4103 | |
3f563c84 PA |
4104 | /* The same symbol may appear more than once in the range though. |
4105 | E.g., if we're looking for symbols that complete "w", and we have | |
4106 | a symbol named "w1::w2", we'll find the two name components for | |
4107 | that same symbol in the range. To be sure we only call the | |
4108 | callback once per symbol, we first collect the symbol name | |
4109 | indexes that matched in a temporary vector and ignore | |
4110 | duplicates. */ | |
4111 | std::vector<offset_type> matches; | |
3f563c84 | 4112 | |
3b00ef10 TT |
4113 | struct name_and_matcher |
4114 | { | |
4115 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 4116 | const char *name; |
3b00ef10 TT |
4117 | |
4118 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4119 | { |
ecc6c606 | 4120 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
4121 | } |
4122 | }; | |
4123 | ||
4124 | /* A vector holding all the different symbol name matchers, for all | |
4125 | languages. */ | |
4126 | std::vector<name_and_matcher> matchers; | |
4127 | ||
4128 | for (int i = 0; i < nr_languages; i++) | |
4129 | { | |
4130 | enum language lang_e = (enum language) i; | |
4131 | ||
4132 | const language_defn *lang = language_def (lang_e); | |
4133 | symbol_name_matcher_ftype *name_matcher | |
c9debfb9 | 4134 | = lang->get_symbol_name_matcher (lookup_name_without_params); |
3f563c84 | 4135 | |
3b00ef10 TT |
4136 | name_and_matcher key { |
4137 | name_matcher, | |
4138 | lookup_name_without_params.language_lookup_name (lang_e) | |
4139 | }; | |
4140 | ||
4141 | /* Don't insert the same comparison routine more than once. | |
4142 | Note that we do this linear walk. This is not a problem in | |
4143 | practice because the number of supported languages is | |
4144 | low. */ | |
4145 | if (std::find (matchers.begin (), matchers.end (), key) | |
4146 | != matchers.end ()) | |
9291a0cd | 4147 | continue; |
3b00ef10 TT |
4148 | matchers.push_back (std::move (key)); |
4149 | ||
4150 | auto bounds | |
4151 | = index.find_name_components_bounds (lookup_name_without_params, | |
fcf23d5b | 4152 | lang_e, per_objfile); |
3b00ef10 TT |
4153 | |
4154 | /* Now for each symbol name in range, check to see if we have a name | |
4155 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4156 | ||
4157 | for (; bounds.first != bounds.second; ++bounds.first) | |
4158 | { | |
fcf23d5b SM |
4159 | const char *qualified |
4160 | = index.symbol_name_at (bounds.first->idx, per_objfile); | |
3b00ef10 TT |
4161 | |
4162 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4163 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4164 | continue; | |
9291a0cd | 4165 | |
3b00ef10 TT |
4166 | matches.push_back (bounds.first->idx); |
4167 | } | |
3f563c84 PA |
4168 | } |
4169 | ||
4170 | std::sort (matches.begin (), matches.end ()); | |
4171 | ||
4172 | /* Finally call the callback, once per match. */ | |
4173 | ULONGEST prev = -1; | |
4174 | for (offset_type idx : matches) | |
4175 | { | |
4176 | if (prev != idx) | |
4177 | { | |
3b00ef10 TT |
4178 | if (!match_callback (idx)) |
4179 | break; | |
3f563c84 PA |
4180 | prev = idx; |
4181 | } | |
4182 | } | |
4183 | ||
4184 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4185 | (offset_type)-1 are both possible values. */ | |
4186 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4187 | } | |
4188 | ||
c62446b1 PA |
4189 | #if GDB_SELF_TEST |
4190 | ||
4191 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4192 | ||
a3c5fafd PA |
4193 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4194 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4195 | mapped_index_base interface. Builds an index from the symbol list | |
4196 | passed as parameter to the constructor. */ | |
4197 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4198 | { |
4199 | public: | |
a3c5fafd PA |
4200 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4201 | : m_symbol_table (symbols) | |
c62446b1 PA |
4202 | {} |
4203 | ||
a3c5fafd | 4204 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4205 | |
a3c5fafd | 4206 | /* Return the number of names in the symbol table. */ |
632e107b | 4207 | size_t symbol_name_count () const override |
c62446b1 | 4208 | { |
a3c5fafd | 4209 | return m_symbol_table.size (); |
c62446b1 PA |
4210 | } |
4211 | ||
a3c5fafd | 4212 | /* Get the name of the symbol at IDX in the symbol table. */ |
fcf23d5b SM |
4213 | const char *symbol_name_at |
4214 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
a3c5fafd PA |
4215 | { |
4216 | return m_symbol_table[idx]; | |
4217 | } | |
c62446b1 | 4218 | |
a3c5fafd PA |
4219 | private: |
4220 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4221 | }; |
4222 | ||
4223 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4224 | string, to pass to print routines. */ | |
4225 | ||
4226 | static const char * | |
4227 | string_or_null (const char *str) | |
4228 | { | |
4229 | return str != NULL ? str : "<null>"; | |
4230 | } | |
4231 | ||
4232 | /* Check if a lookup_name_info built from | |
4233 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4234 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4235 | matching order. If no match expected, then an empty list is | |
4236 | specified. Returns true on success. On failure prints a warning | |
4237 | indicating the file:line that failed, and returns false. */ | |
4238 | ||
4239 | static bool | |
4240 | check_match (const char *file, int line, | |
4241 | mock_mapped_index &mock_index, | |
4242 | const char *name, symbol_name_match_type match_type, | |
4243 | bool completion_mode, | |
fcf23d5b SM |
4244 | std::initializer_list<const char *> expected_list, |
4245 | dwarf2_per_objfile *per_objfile) | |
c62446b1 PA |
4246 | { |
4247 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4248 | ||
4249 | bool matched = true; | |
4250 | ||
4251 | auto mismatch = [&] (const char *expected_str, | |
4252 | const char *got) | |
4253 | { | |
4254 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4255 | "expected=\"%s\", got=\"%s\"\n"), | |
4256 | file, line, | |
4257 | (match_type == symbol_name_match_type::FULL | |
4258 | ? "FULL" : "WILD"), | |
4259 | name, string_or_null (expected_str), string_or_null (got)); | |
4260 | matched = false; | |
4261 | }; | |
4262 | ||
4263 | auto expected_it = expected_list.begin (); | |
4264 | auto expected_end = expected_list.end (); | |
4265 | ||
a3c5fafd | 4266 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4267 | NULL, ALL_DOMAIN, |
4268 | [&] (offset_type idx) | |
4269 | { | |
fcf23d5b | 4270 | const char *matched_name = mock_index.symbol_name_at (idx, per_objfile); |
c62446b1 PA |
4271 | const char *expected_str |
4272 | = expected_it == expected_end ? NULL : *expected_it++; | |
4273 | ||
4274 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4275 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4276 | return true; |
fcf23d5b | 4277 | }, per_objfile); |
c62446b1 PA |
4278 | |
4279 | const char *expected_str | |
4280 | = expected_it == expected_end ? NULL : *expected_it++; | |
4281 | if (expected_str != NULL) | |
4282 | mismatch (expected_str, NULL); | |
4283 | ||
4284 | return matched; | |
4285 | } | |
4286 | ||
4287 | /* The symbols added to the mock mapped_index for testing (in | |
4288 | canonical form). */ | |
4289 | static const char *test_symbols[] = { | |
4290 | "function", | |
4291 | "std::bar", | |
4292 | "std::zfunction", | |
4293 | "std::zfunction2", | |
4294 | "w1::w2", | |
4295 | "ns::foo<char*>", | |
4296 | "ns::foo<int>", | |
4297 | "ns::foo<long>", | |
a20714ff PA |
4298 | "ns2::tmpl<int>::foo2", |
4299 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4300 | |
e1ef7d7a PA |
4301 | /* These are used to check that the increment-last-char in the |
4302 | matching algorithm for completion doesn't match "t1_fund" when | |
4303 | completing "t1_func". */ | |
4304 | "t1_func", | |
4305 | "t1_func1", | |
4306 | "t1_fund", | |
4307 | "t1_fund1", | |
4308 | ||
4309 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4310 | cp-name-parser understands this as a single identifier ("função" | |
4311 | is "function" in PT). */ | |
4312 | u8"u8função", | |
4313 | ||
4314 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4315 | "yfunc\377", | |
4316 | ||
4317 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4318 | "\377", | |
4319 | "\377\377123", | |
4320 | ||
c62446b1 PA |
4321 | /* A name with all sorts of complications. Starts with "z" to make |
4322 | it easier for the completion tests below. */ | |
4323 | #define Z_SYM_NAME \ | |
4324 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4325 | "::tuple<(anonymous namespace)::ui*, " \ | |
4326 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4327 | ||
4328 | Z_SYM_NAME | |
4329 | }; | |
4330 | ||
a3c5fafd PA |
4331 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4332 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4333 | in completion mode. */ | |
5c58de74 PA |
4334 | |
4335 | static bool | |
a3c5fafd | 4336 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 | 4337 | const char *search_name, |
fcf23d5b SM |
4338 | gdb::array_view<const char *> expected_syms, |
4339 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4340 | { |
4341 | lookup_name_info lookup_name (search_name, | |
4342 | symbol_name_match_type::FULL, true); | |
4343 | ||
3b00ef10 | 4344 | auto bounds = index.find_name_components_bounds (lookup_name, |
fcf23d5b SM |
4345 | language_cplus, |
4346 | per_objfile); | |
5c58de74 PA |
4347 | |
4348 | size_t distance = std::distance (bounds.first, bounds.second); | |
4349 | if (distance != expected_syms.size ()) | |
4350 | return false; | |
4351 | ||
4352 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4353 | { | |
4354 | auto nc_elem = bounds.first + exp_elem; | |
fcf23d5b | 4355 | const char *qualified = index.symbol_name_at (nc_elem->idx, per_objfile); |
5c58de74 PA |
4356 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) |
4357 | return false; | |
4358 | } | |
4359 | ||
4360 | return true; | |
4361 | } | |
4362 | ||
4363 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4364 | method. */ | |
4365 | ||
c62446b1 | 4366 | static void |
5c58de74 PA |
4367 | test_mapped_index_find_name_component_bounds () |
4368 | { | |
4369 | mock_mapped_index mock_index (test_symbols); | |
4370 | ||
fcf23d5b | 4371 | mock_index.build_name_components (NULL /* per_objfile */); |
5c58de74 PA |
4372 | |
4373 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4374 | method in completion mode. */ | |
4375 | { | |
4376 | static const char *expected_syms[] = { | |
4377 | "t1_func", | |
4378 | "t1_func1", | |
5c58de74 PA |
4379 | }; |
4380 | ||
fcf23d5b SM |
4381 | SELF_CHECK (check_find_bounds_finds |
4382 | (mock_index, "t1_func", expected_syms, | |
4383 | NULL /* per_objfile */)); | |
5c58de74 PA |
4384 | } |
4385 | ||
4386 | /* Check that the increment-last-char in the name matching algorithm | |
4387 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4388 | { | |
4389 | static const char *expected_syms1[] = { | |
4390 | "\377", | |
4391 | "\377\377123", | |
4392 | }; | |
fcf23d5b SM |
4393 | SELF_CHECK (check_find_bounds_finds |
4394 | (mock_index, "\377", expected_syms1, NULL /* per_objfile */)); | |
5c58de74 PA |
4395 | |
4396 | static const char *expected_syms2[] = { | |
4397 | "\377\377123", | |
4398 | }; | |
fcf23d5b SM |
4399 | SELF_CHECK (check_find_bounds_finds |
4400 | (mock_index, "\377\377", expected_syms2, | |
4401 | NULL /* per_objfile */)); | |
5c58de74 PA |
4402 | } |
4403 | } | |
4404 | ||
4405 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4406 | ||
4407 | static void | |
4408 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4409 | { |
4410 | mock_mapped_index mock_index (test_symbols); | |
4411 | ||
4412 | /* We let all tests run until the end even if some fails, for debug | |
4413 | convenience. */ | |
4414 | bool any_mismatch = false; | |
4415 | ||
4416 | /* Create the expected symbols list (an initializer_list). Needed | |
4417 | because lists have commas, and we need to pass them to CHECK, | |
4418 | which is a macro. */ | |
4419 | #define EXPECT(...) { __VA_ARGS__ } | |
4420 | ||
4421 | /* Wrapper for check_match that passes down the current | |
4422 | __FILE__/__LINE__. */ | |
4423 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4424 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4425 | mock_index, \ | |
4426 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
fcf23d5b | 4427 | EXPECTED_LIST, NULL) |
c62446b1 PA |
4428 | |
4429 | /* Identity checks. */ | |
4430 | for (const char *sym : test_symbols) | |
4431 | { | |
4432 | /* Should be able to match all existing symbols. */ | |
4433 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4434 | EXPECT (sym)); | |
4435 | ||
4436 | /* Should be able to match all existing symbols with | |
4437 | parameters. */ | |
4438 | std::string with_params = std::string (sym) + "(int)"; | |
4439 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4440 | EXPECT (sym)); | |
4441 | ||
4442 | /* Should be able to match all existing symbols with | |
4443 | parameters and qualifiers. */ | |
4444 | with_params = std::string (sym) + " ( int ) const"; | |
4445 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4446 | EXPECT (sym)); | |
4447 | ||
4448 | /* This should really find sym, but cp-name-parser.y doesn't | |
4449 | know about lvalue/rvalue qualifiers yet. */ | |
4450 | with_params = std::string (sym) + " ( int ) &&"; | |
4451 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4452 | {}); | |
4453 | } | |
4454 | ||
e1ef7d7a PA |
4455 | /* Check that the name matching algorithm for completion doesn't get |
4456 | confused with Latin1 'ÿ' / 0xff. */ | |
4457 | { | |
4458 | static const char str[] = "\377"; | |
4459 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4460 | EXPECT ("\377", "\377\377123")); | |
4461 | } | |
4462 | ||
4463 | /* Check that the increment-last-char in the matching algorithm for | |
4464 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4465 | { | |
4466 | static const char str[] = "t1_func"; | |
4467 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4468 | EXPECT ("t1_func", "t1_func1")); | |
4469 | } | |
4470 | ||
c62446b1 PA |
4471 | /* Check that completion mode works at each prefix of the expected |
4472 | symbol name. */ | |
4473 | { | |
4474 | static const char str[] = "function(int)"; | |
4475 | size_t len = strlen (str); | |
4476 | std::string lookup; | |
4477 | ||
4478 | for (size_t i = 1; i < len; i++) | |
4479 | { | |
4480 | lookup.assign (str, i); | |
4481 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4482 | EXPECT ("function")); | |
4483 | } | |
4484 | } | |
4485 | ||
4486 | /* While "w" is a prefix of both components, the match function | |
4487 | should still only be called once. */ | |
4488 | { | |
4489 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4490 | EXPECT ("w1::w2")); | |
a20714ff PA |
4491 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4492 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4493 | } |
4494 | ||
4495 | /* Same, with a "complicated" symbol. */ | |
4496 | { | |
4497 | static const char str[] = Z_SYM_NAME; | |
4498 | size_t len = strlen (str); | |
4499 | std::string lookup; | |
4500 | ||
4501 | for (size_t i = 1; i < len; i++) | |
4502 | { | |
4503 | lookup.assign (str, i); | |
4504 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4505 | EXPECT (Z_SYM_NAME)); | |
4506 | } | |
4507 | } | |
4508 | ||
4509 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4510 | { | |
4511 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4512 | {}); | |
4513 | } | |
4514 | ||
4515 | /* A complete symbol with parameters matches any overload, since the | |
4516 | index has no overload info. */ | |
4517 | { | |
4518 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4519 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4520 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4521 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4522 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4523 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4524 | } |
4525 | ||
4526 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4527 | template argument list. */ | |
4528 | { | |
4529 | static const char expected[] = "ns::foo<int>"; | |
4530 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4531 | EXPECT (expected)); | |
a20714ff PA |
4532 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4533 | EXPECT (expected)); | |
c62446b1 PA |
4534 | } |
4535 | ||
4536 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4537 | template argument list that includes a pointer. */ | |
4538 | { | |
4539 | static const char expected[] = "ns::foo<char*>"; | |
4540 | /* Try both completion and non-completion modes. */ | |
4541 | static const bool completion_mode[2] = {false, true}; | |
4542 | for (size_t i = 0; i < 2; i++) | |
4543 | { | |
4544 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4545 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4546 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4547 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4548 | |
4549 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4550 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4551 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4552 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4553 | } |
4554 | } | |
4555 | ||
4556 | { | |
4557 | /* Check method qualifiers are ignored. */ | |
4558 | static const char expected[] = "ns::foo<char*>"; | |
4559 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4560 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4561 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4562 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4563 | CHECK_MATCH ("foo < char * > ( int ) const", |
4564 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4565 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4566 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4567 | } |
4568 | ||
4569 | /* Test lookup names that don't match anything. */ | |
4570 | { | |
a20714ff PA |
4571 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4572 | {}); | |
4573 | ||
c62446b1 PA |
4574 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4575 | {}); | |
4576 | } | |
4577 | ||
a20714ff PA |
4578 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4579 | which should not be confused with a parameter list. */ | |
4580 | { | |
4581 | static const char *syms[] = { | |
4582 | "A::B::C", | |
4583 | "B::C", | |
4584 | "C", | |
4585 | "A :: B :: C ( int )", | |
4586 | "B :: C ( int )", | |
4587 | "C ( int )", | |
4588 | }; | |
4589 | ||
4590 | for (const char *s : syms) | |
4591 | { | |
4592 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4593 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4594 | } | |
4595 | } | |
4596 | ||
4597 | { | |
4598 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4599 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4600 | EXPECT (expected)); | |
4601 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4602 | EXPECT (expected)); | |
4603 | } | |
4604 | ||
c62446b1 PA |
4605 | SELF_CHECK (!any_mismatch); |
4606 | ||
4607 | #undef EXPECT | |
4608 | #undef CHECK_MATCH | |
4609 | } | |
4610 | ||
5c58de74 PA |
4611 | static void |
4612 | run_test () | |
4613 | { | |
4614 | test_mapped_index_find_name_component_bounds (); | |
4615 | test_dw2_expand_symtabs_matching_symbol (); | |
4616 | } | |
4617 | ||
c62446b1 PA |
4618 | }} // namespace selftests::dw2_expand_symtabs_matching |
4619 | ||
4620 | #endif /* GDB_SELF_TEST */ | |
4621 | ||
4b514bc8 JK |
4622 | /* If FILE_MATCHER is NULL or if PER_CU has |
4623 | dwarf2_per_cu_quick_data::MARK set (see | |
4624 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4625 | EXPANSION_NOTIFY on it. */ | |
4626 | ||
4627 | static void | |
4628 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
4629 | (dwarf2_per_cu_data *per_cu, |
4630 | dwarf2_per_objfile *per_objfile, | |
4b514bc8 JK |
4631 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4632 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4633 | { | |
4634 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4635 | { | |
af758d11 | 4636 | bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); |
4b514bc8 | 4637 | |
97a1449a SM |
4638 | compunit_symtab *symtab |
4639 | = dw2_instantiate_symtab (per_cu, per_objfile, false); | |
af758d11 | 4640 | gdb_assert (symtab != nullptr); |
4b514bc8 | 4641 | |
af758d11 SM |
4642 | if (expansion_notify != NULL && symtab_was_null) |
4643 | expansion_notify (symtab); | |
4b514bc8 JK |
4644 | } |
4645 | } | |
4646 | ||
3f563c84 PA |
4647 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4648 | matched, to expand corresponding CUs that were marked. IDX is the | |
4649 | index of the symbol name that matched. */ | |
4650 | ||
4651 | static void | |
4652 | dw2_expand_marked_cus | |
976ca316 | 4653 | (dwarf2_per_objfile *per_objfile, offset_type idx, |
3f563c84 PA |
4654 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4655 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4656 | search_domain kind) | |
4657 | { | |
3f563c84 PA |
4658 | offset_type *vec, vec_len, vec_idx; |
4659 | bool global_seen = false; | |
976ca316 | 4660 | mapped_index &index = *per_objfile->per_bfd->index_table; |
3f563c84 | 4661 | |
61920122 | 4662 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4663 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4664 | vec_len = MAYBE_SWAP (vec[0]); |
4665 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4666 | { | |
61920122 PA |
4667 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4668 | /* This value is only valid for index versions >= 7. */ | |
4669 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4670 | gdb_index_symbol_kind symbol_kind = | |
4671 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4672 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4673 | /* Only check the symbol attributes if they're present. | |
4674 | Indices prior to version 7 don't record them, | |
4675 | and indices >= 7 may elide them for certain symbols | |
4676 | (gold does this). */ | |
4677 | int attrs_valid = | |
4678 | (index.version >= 7 | |
4679 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4680 | ||
4681 | /* Work around gold/15646. */ | |
f030440d TV |
4682 | if (attrs_valid |
4683 | && !is_static | |
4684 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
9291a0cd | 4685 | { |
f030440d | 4686 | if (global_seen) |
61920122 | 4687 | continue; |
f030440d TV |
4688 | |
4689 | global_seen = true; | |
61920122 | 4690 | } |
3190f0c6 | 4691 | |
61920122 PA |
4692 | /* Only check the symbol's kind if it has one. */ |
4693 | if (attrs_valid) | |
4694 | { | |
4695 | switch (kind) | |
8943b874 | 4696 | { |
61920122 PA |
4697 | case VARIABLES_DOMAIN: |
4698 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4699 | continue; | |
4700 | break; | |
4701 | case FUNCTIONS_DOMAIN: | |
4702 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4703 | continue; |
61920122 PA |
4704 | break; |
4705 | case TYPES_DOMAIN: | |
4706 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4707 | continue; | |
4708 | break; | |
59c35742 AB |
4709 | case MODULES_DOMAIN: |
4710 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4711 | continue; | |
4712 | break; | |
61920122 PA |
4713 | default: |
4714 | break; | |
8943b874 | 4715 | } |
61920122 | 4716 | } |
8943b874 | 4717 | |
61920122 | 4718 | /* Don't crash on bad data. */ |
976ca316 SM |
4719 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
4720 | + per_objfile->per_bfd->all_type_units.size ())) | |
61920122 | 4721 | { |
b98664d3 | 4722 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 4723 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
61920122 PA |
4724 | continue; |
4725 | } | |
4726 | ||
976ca316 SM |
4727 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
4728 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, | |
4b514bc8 | 4729 | expansion_notify); |
61920122 PA |
4730 | } |
4731 | } | |
4732 | ||
4b514bc8 JK |
4733 | /* If FILE_MATCHER is non-NULL, set all the |
4734 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4735 | that match FILE_MATCHER. */ | |
4736 | ||
61920122 | 4737 | static void |
4b514bc8 | 4738 | dw_expand_symtabs_matching_file_matcher |
976ca316 | 4739 | (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 4740 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) |
61920122 | 4741 | { |
4b514bc8 | 4742 | if (file_matcher == NULL) |
61920122 PA |
4743 | return; |
4744 | ||
4b514bc8 JK |
4745 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4746 | htab_eq_pointer, | |
4747 | NULL, xcalloc, xfree)); | |
4748 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4749 | htab_eq_pointer, |
4750 | NULL, xcalloc, xfree)); | |
61920122 | 4751 | |
4b514bc8 JK |
4752 | /* The rule is CUs specify all the files, including those used by |
4753 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4754 | |
976ca316 | 4755 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4756 | { |
927aa2e7 JK |
4757 | QUIT; |
4758 | ||
4759 | per_cu->v.quick->mark = 0; | |
4760 | ||
4761 | /* We only need to look at symtabs not already expanded. */ | |
976ca316 | 4762 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4763 | continue; |
4764 | ||
976ca316 | 4765 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4766 | if (file_data == NULL) |
4767 | continue; | |
4768 | ||
4769 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4770 | continue; | |
4771 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4772 | { | |
4773 | per_cu->v.quick->mark = 1; | |
4774 | continue; | |
4775 | } | |
4776 | ||
b76e467d | 4777 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4778 | { |
4779 | const char *this_real_name; | |
4780 | ||
4781 | if (file_matcher (file_data->file_names[j], false)) | |
4782 | { | |
4783 | per_cu->v.quick->mark = 1; | |
4784 | break; | |
4785 | } | |
4786 | ||
4787 | /* Before we invoke realpath, which can get expensive when many | |
4788 | files are involved, do a quick comparison of the basenames. */ | |
4789 | if (!basenames_may_differ | |
4790 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4791 | true)) | |
4792 | continue; | |
4793 | ||
976ca316 | 4794 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
927aa2e7 JK |
4795 | if (file_matcher (this_real_name, false)) |
4796 | { | |
4797 | per_cu->v.quick->mark = 1; | |
4798 | break; | |
4799 | } | |
4800 | } | |
4801 | ||
b76e467d SM |
4802 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4803 | ? visited_found.get () | |
4804 | : visited_not_found.get (), | |
4805 | file_data, INSERT); | |
927aa2e7 JK |
4806 | *slot = file_data; |
4807 | } | |
4808 | } | |
4809 | ||
4810 | static void | |
4811 | dw2_expand_symtabs_matching | |
4812 | (struct objfile *objfile, | |
4813 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 4814 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
4815 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
4816 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4817 | enum search_domain kind) | |
4818 | { | |
976ca316 | 4819 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 JK |
4820 | |
4821 | /* index_table is NULL if OBJF_READNOW. */ | |
976ca316 | 4822 | if (!per_objfile->per_bfd->index_table) |
927aa2e7 JK |
4823 | return; |
4824 | ||
976ca316 | 4825 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
927aa2e7 | 4826 | |
c1a66c06 TV |
4827 | if (symbol_matcher == NULL && lookup_name == NULL) |
4828 | { | |
976ca316 | 4829 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
4830 | { |
4831 | QUIT; | |
4832 | ||
976ca316 | 4833 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, |
97a1449a | 4834 | file_matcher, expansion_notify); |
c1a66c06 TV |
4835 | } |
4836 | return; | |
4837 | } | |
4838 | ||
976ca316 | 4839 | mapped_index &index = *per_objfile->per_bfd->index_table; |
927aa2e7 | 4840 | |
c1a66c06 | 4841 | dw2_expand_symtabs_matching_symbol (index, *lookup_name, |
927aa2e7 JK |
4842 | symbol_matcher, |
4843 | kind, [&] (offset_type idx) | |
4844 | { | |
976ca316 SM |
4845 | dw2_expand_marked_cus (per_objfile, idx, file_matcher, expansion_notify, |
4846 | kind); | |
3b00ef10 | 4847 | return true; |
976ca316 | 4848 | }, per_objfile); |
927aa2e7 JK |
4849 | } |
4850 | ||
4851 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4852 | symtab. */ | |
4853 | ||
4854 | static struct compunit_symtab * | |
4855 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4856 | CORE_ADDR pc) | |
4857 | { | |
4858 | int i; | |
4859 | ||
4860 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4861 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4862 | return cust; | |
4863 | ||
4864 | if (cust->includes == NULL) | |
4865 | return NULL; | |
4866 | ||
4867 | for (i = 0; cust->includes[i]; ++i) | |
4868 | { | |
4869 | struct compunit_symtab *s = cust->includes[i]; | |
4870 | ||
4871 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4872 | if (s != NULL) | |
4873 | return s; | |
4874 | } | |
4875 | ||
4876 | return NULL; | |
4877 | } | |
4878 | ||
4879 | static struct compunit_symtab * | |
4880 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4881 | struct bound_minimal_symbol msymbol, | |
4882 | CORE_ADDR pc, | |
4883 | struct obj_section *section, | |
4884 | int warn_if_readin) | |
4885 | { | |
4886 | struct dwarf2_per_cu_data *data; | |
4887 | struct compunit_symtab *result; | |
4888 | ||
d320c2b5 | 4889 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4890 | return NULL; |
4891 | ||
b3b3bada | 4892 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
4893 | data = (struct dwarf2_per_cu_data *) addrmap_find |
4894 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
4895 | if (!data) |
4896 | return NULL; | |
4897 | ||
af758d11 SM |
4898 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
4899 | if (warn_if_readin && per_objfile->symtab_set_p (data)) | |
927aa2e7 | 4900 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
08feed99 | 4901 | paddress (objfile->arch (), pc)); |
927aa2e7 | 4902 | |
97a1449a SM |
4903 | result = recursively_find_pc_sect_compunit_symtab |
4904 | (dw2_instantiate_symtab (data, per_objfile, false), pc); | |
4905 | ||
927aa2e7 JK |
4906 | gdb_assert (result != NULL); |
4907 | return result; | |
4908 | } | |
4909 | ||
4910 | static void | |
4911 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
4912 | void *data, int need_fullname) | |
4913 | { | |
976ca316 | 4914 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 | 4915 | |
976ca316 | 4916 | if (!per_objfile->per_bfd->filenames_cache) |
927aa2e7 | 4917 | { |
976ca316 | 4918 | per_objfile->per_bfd->filenames_cache.emplace (); |
927aa2e7 JK |
4919 | |
4920 | htab_up visited (htab_create_alloc (10, | |
4921 | htab_hash_pointer, htab_eq_pointer, | |
4922 | NULL, xcalloc, xfree)); | |
4923 | ||
4924 | /* The rule is CUs specify all the files, including those used | |
4925 | by any TU, so there's no need to scan TUs here. We can | |
4926 | ignore file names coming from already-expanded CUs. */ | |
4927 | ||
976ca316 | 4928 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4929 | { |
976ca316 | 4930 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4931 | { |
4932 | void **slot = htab_find_slot (visited.get (), | |
4933 | per_cu->v.quick->file_names, | |
4934 | INSERT); | |
4935 | ||
4936 | *slot = per_cu->v.quick->file_names; | |
4937 | } | |
4938 | } | |
4939 | ||
976ca316 | 4940 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4941 | { |
927aa2e7 | 4942 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 4943 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4944 | continue; |
4945 | ||
ab432490 | 4946 | quick_file_names *file_data |
976ca316 | 4947 | = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4948 | if (file_data == NULL) |
4949 | continue; | |
4950 | ||
b76e467d | 4951 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4952 | if (*slot) |
4953 | { | |
4954 | /* Already visited. */ | |
4955 | continue; | |
4956 | } | |
4957 | *slot = file_data; | |
4958 | ||
4959 | for (int j = 0; j < file_data->num_file_names; ++j) | |
4960 | { | |
4961 | const char *filename = file_data->file_names[j]; | |
976ca316 | 4962 | per_objfile->per_bfd->filenames_cache->seen (filename); |
927aa2e7 JK |
4963 | } |
4964 | } | |
4965 | } | |
4966 | ||
976ca316 | 4967 | per_objfile->per_bfd->filenames_cache->traverse ([&] (const char *filename) |
927aa2e7 JK |
4968 | { |
4969 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
4970 | ||
4971 | if (need_fullname) | |
4972 | this_real_name = gdb_realpath (filename); | |
4973 | (*fun) (filename, this_real_name.get (), data); | |
4974 | }); | |
4975 | } | |
4976 | ||
4977 | static int | |
4978 | dw2_has_symbols (struct objfile *objfile) | |
4979 | { | |
4980 | return 1; | |
4981 | } | |
4982 | ||
4983 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4984 | { | |
4985 | dw2_has_symbols, | |
4986 | dw2_find_last_source_symtab, | |
4987 | dw2_forget_cached_source_info, | |
4988 | dw2_map_symtabs_matching_filename, | |
4989 | dw2_lookup_symbol, | |
d3214198 | 4990 | NULL, |
927aa2e7 JK |
4991 | dw2_print_stats, |
4992 | dw2_dump, | |
927aa2e7 JK |
4993 | dw2_expand_symtabs_for_function, |
4994 | dw2_expand_all_symtabs, | |
4995 | dw2_expand_symtabs_with_fullname, | |
4996 | dw2_map_matching_symbols, | |
4997 | dw2_expand_symtabs_matching, | |
4998 | dw2_find_pc_sect_compunit_symtab, | |
4999 | NULL, | |
5000 | dw2_map_symbol_filenames | |
5001 | }; | |
5002 | ||
5003 | /* DWARF-5 debug_names reader. */ | |
5004 | ||
5005 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5006 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5007 | ||
5008 | /* A helper function that reads the .debug_names section in SECTION | |
5009 | and fills in MAP. FILENAME is the name of the file containing the | |
5010 | section; it is used for error reporting. | |
5011 | ||
5012 | Returns true if all went well, false otherwise. */ | |
5013 | ||
5014 | static bool | |
5015 | read_debug_names_from_section (struct objfile *objfile, | |
5016 | const char *filename, | |
5017 | struct dwarf2_section_info *section, | |
5018 | mapped_debug_names &map) | |
5019 | { | |
96b79293 | 5020 | if (section->empty ()) |
927aa2e7 JK |
5021 | return false; |
5022 | ||
5023 | /* Older elfutils strip versions could keep the section in the main | |
5024 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5025 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
5026 | return false; |
5027 | ||
96b79293 | 5028 | section->read (objfile); |
927aa2e7 | 5029 | |
08feed99 | 5030 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
5031 | |
5032 | const gdb_byte *addr = section->buffer; | |
5033 | ||
96b79293 | 5034 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
5035 | |
5036 | unsigned int bytes_read; | |
5037 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5038 | addr += bytes_read; | |
5039 | ||
5040 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5041 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5042 | if (bytes_read + length != section->size) | |
5043 | { | |
5044 | /* There may be multiple per-CU indices. */ | |
5045 | warning (_("Section .debug_names in %s length %s does not match " | |
5046 | "section length %s, ignoring .debug_names."), | |
5047 | filename, plongest (bytes_read + length), | |
5048 | pulongest (section->size)); | |
5049 | return false; | |
5050 | } | |
5051 | ||
5052 | /* The version number. */ | |
5053 | uint16_t version = read_2_bytes (abfd, addr); | |
5054 | addr += 2; | |
5055 | if (version != 5) | |
5056 | { | |
5057 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5058 | "ignoring .debug_names."), | |
5059 | filename, version); | |
5060 | return false; | |
5061 | } | |
5062 | ||
5063 | /* Padding. */ | |
5064 | uint16_t padding = read_2_bytes (abfd, addr); | |
5065 | addr += 2; | |
5066 | if (padding != 0) | |
5067 | { | |
5068 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5069 | "ignoring .debug_names."), | |
5070 | filename, padding); | |
5071 | return false; | |
5072 | } | |
5073 | ||
5074 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5075 | map.cu_count = read_4_bytes (abfd, addr); | |
5076 | addr += 4; | |
5077 | ||
5078 | /* local_type_unit_count - The number of TUs in the local TU | |
5079 | list. */ | |
5080 | map.tu_count = read_4_bytes (abfd, addr); | |
5081 | addr += 4; | |
5082 | ||
5083 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5084 | list. */ | |
5085 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5086 | addr += 4; | |
5087 | if (foreign_tu_count != 0) | |
5088 | { | |
5089 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5090 | "ignoring .debug_names."), | |
5091 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5092 | return false; | |
5093 | } | |
5094 | ||
5095 | /* bucket_count - The number of hash buckets in the hash lookup | |
5096 | table. */ | |
5097 | map.bucket_count = read_4_bytes (abfd, addr); | |
5098 | addr += 4; | |
5099 | ||
5100 | /* name_count - The number of unique names in the index. */ | |
5101 | map.name_count = read_4_bytes (abfd, addr); | |
5102 | addr += 4; | |
5103 | ||
5104 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5105 | table. */ | |
5106 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5107 | addr += 4; | |
5108 | ||
5109 | /* augmentation_string_size - The size in bytes of the augmentation | |
5110 | string. This value is rounded up to a multiple of 4. */ | |
5111 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5112 | addr += 4; | |
5113 | map.augmentation_is_gdb = ((augmentation_string_size | |
5114 | == sizeof (dwarf5_augmentation)) | |
5115 | && memcmp (addr, dwarf5_augmentation, | |
5116 | sizeof (dwarf5_augmentation)) == 0); | |
5117 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5118 | addr += augmentation_string_size; | |
5119 | ||
5120 | /* List of CUs */ | |
5121 | map.cu_table_reordered = addr; | |
5122 | addr += map.cu_count * map.offset_size; | |
5123 | ||
5124 | /* List of Local TUs */ | |
5125 | map.tu_table_reordered = addr; | |
5126 | addr += map.tu_count * map.offset_size; | |
5127 | ||
5128 | /* Hash Lookup Table */ | |
5129 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5130 | addr += map.bucket_count * 4; | |
5131 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5132 | addr += map.name_count * 4; | |
5133 | ||
5134 | /* Name Table */ | |
5135 | map.name_table_string_offs_reordered = addr; | |
5136 | addr += map.name_count * map.offset_size; | |
5137 | map.name_table_entry_offs_reordered = addr; | |
5138 | addr += map.name_count * map.offset_size; | |
5139 | ||
5140 | const gdb_byte *abbrev_table_start = addr; | |
5141 | for (;;) | |
5142 | { | |
927aa2e7 JK |
5143 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5144 | addr += bytes_read; | |
5145 | if (index_num == 0) | |
5146 | break; | |
5147 | ||
5148 | const auto insertpair | |
5149 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5150 | if (!insertpair.second) | |
5151 | { | |
5152 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5153 | "ignoring .debug_names."), | |
5154 | filename, pulongest (index_num)); | |
5155 | return false; | |
5156 | } | |
5157 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5158 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5159 | addr += bytes_read; | |
5160 | ||
5161 | for (;;) | |
5162 | { | |
5163 | mapped_debug_names::index_val::attr attr; | |
5164 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5165 | addr += bytes_read; | |
5166 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5167 | addr += bytes_read; | |
5168 | if (attr.form == DW_FORM_implicit_const) | |
5169 | { | |
5170 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5171 | &bytes_read); | |
5172 | addr += bytes_read; | |
5173 | } | |
5174 | if (attr.dw_idx == 0 && attr.form == 0) | |
5175 | break; | |
5176 | indexval.attr_vec.push_back (std::move (attr)); | |
5177 | } | |
5178 | } | |
5179 | if (addr != abbrev_table_start + abbrev_table_size) | |
5180 | { | |
5181 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5182 | "of size %s vs. written as %u, ignoring .debug_names."), |
5183 | filename, plongest (addr - abbrev_table_start), | |
5184 | abbrev_table_size); | |
927aa2e7 JK |
5185 | return false; |
5186 | } | |
5187 | map.entry_pool = addr; | |
5188 | ||
5189 | return true; | |
5190 | } | |
5191 | ||
5192 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5193 | list. */ | |
5194 | ||
5195 | static void | |
168c9250 | 5196 | create_cus_from_debug_names_list (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5197 | const mapped_debug_names &map, |
5198 | dwarf2_section_info §ion, | |
b76e467d | 5199 | bool is_dwz) |
927aa2e7 | 5200 | { |
3ee6bb11 TV |
5201 | if (!map.augmentation_is_gdb) |
5202 | { | |
5203 | for (uint32_t i = 0; i < map.cu_count; ++i) | |
5204 | { | |
5205 | sect_offset sect_off | |
5206 | = (sect_offset) (extract_unsigned_integer | |
5207 | (map.cu_table_reordered + i * map.offset_size, | |
5208 | map.offset_size, | |
5209 | map.dwarf5_byte_order)); | |
5210 | /* We don't know the length of the CU, because the CU list in a | |
5211 | .debug_names index can be incomplete, so we can't use the start of | |
5212 | the next CU as end of this CU. We create the CUs here with length 0, | |
5213 | and in cutu_reader::cutu_reader we'll fill in the actual length. */ | |
5214 | dwarf2_per_cu_data *per_cu | |
168c9250 SM |
5215 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, sect_off, 0); |
5216 | per_bfd->all_comp_units.push_back (per_cu); | |
3ee6bb11 TV |
5217 | } |
5218 | } | |
5219 | ||
927aa2e7 JK |
5220 | sect_offset sect_off_prev; |
5221 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5222 | { | |
5223 | sect_offset sect_off_next; | |
5224 | if (i < map.cu_count) | |
5225 | { | |
5226 | sect_off_next | |
5227 | = (sect_offset) (extract_unsigned_integer | |
5228 | (map.cu_table_reordered + i * map.offset_size, | |
5229 | map.offset_size, | |
5230 | map.dwarf5_byte_order)); | |
5231 | } | |
5232 | else | |
5233 | sect_off_next = (sect_offset) section.size; | |
5234 | if (i >= 1) | |
5235 | { | |
5236 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5237 | dwarf2_per_cu_data *per_cu |
168c9250 | 5238 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
927aa2e7 | 5239 | sect_off_prev, length); |
168c9250 | 5240 | per_bfd->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5241 | } |
5242 | sect_off_prev = sect_off_next; | |
5243 | } | |
5244 | } | |
5245 | ||
5246 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5247 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5248 | |
5249 | static void | |
168c9250 | 5250 | create_cus_from_debug_names (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5251 | const mapped_debug_names &map, |
5252 | const mapped_debug_names &dwz_map) | |
5253 | { | |
168c9250 SM |
5254 | gdb_assert (per_bfd->all_comp_units.empty ()); |
5255 | per_bfd->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5256 | |
168c9250 | 5257 | create_cus_from_debug_names_list (per_bfd, map, per_bfd->info, |
b76e467d | 5258 | false /* is_dwz */); |
927aa2e7 JK |
5259 | |
5260 | if (dwz_map.cu_count == 0) | |
5261 | return; | |
5262 | ||
168c9250 SM |
5263 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
5264 | create_cus_from_debug_names_list (per_bfd, dwz_map, dwz->info, | |
b76e467d | 5265 | true /* is_dwz */); |
927aa2e7 JK |
5266 | } |
5267 | ||
5268 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5269 | elements of all the CUs and return true. Otherwise, return false. */ | |
5270 | ||
5271 | static bool | |
976ca316 | 5272 | dwarf2_read_debug_names (dwarf2_per_objfile *per_objfile) |
927aa2e7 | 5273 | { |
fcf23d5b SM |
5274 | std::unique_ptr<mapped_debug_names> map (new mapped_debug_names); |
5275 | mapped_debug_names dwz_map; | |
976ca316 | 5276 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 5277 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
927aa2e7 JK |
5278 | |
5279 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
976ca316 | 5280 | &per_objfile->per_bfd->debug_names, *map)) |
927aa2e7 JK |
5281 | return false; |
5282 | ||
5283 | /* Don't use the index if it's empty. */ | |
22ca247e | 5284 | if (map->name_count == 0) |
927aa2e7 JK |
5285 | return false; |
5286 | ||
5287 | /* If there is a .dwz file, read it so we can get its CU list as | |
5288 | well. */ | |
f8c41851 | 5289 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
927aa2e7 JK |
5290 | if (dwz != NULL) |
5291 | { | |
5292 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5293 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5294 | &dwz->debug_names, dwz_map)) |
5295 | { | |
5296 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5297 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5298 | return false; |
5299 | } | |
5300 | } | |
5301 | ||
f8c41851 | 5302 | create_cus_from_debug_names (per_bfd, *map, dwz_map); |
927aa2e7 | 5303 | |
22ca247e | 5304 | if (map->tu_count != 0) |
927aa2e7 JK |
5305 | { |
5306 | /* We can only handle a single .debug_types when we have an | |
5307 | index. */ | |
f8c41851 | 5308 | if (per_bfd->types.size () != 1) |
927aa2e7 JK |
5309 | return false; |
5310 | ||
f8c41851 | 5311 | dwarf2_section_info *section = &per_bfd->types[0]; |
927aa2e7 JK |
5312 | |
5313 | create_signatured_type_table_from_debug_names | |
f8c41851 | 5314 | (per_objfile, *map, section, &per_bfd->abbrev); |
927aa2e7 JK |
5315 | } |
5316 | ||
f8c41851 | 5317 | create_addrmap_from_aranges (per_objfile, &per_bfd->debug_aranges); |
927aa2e7 | 5318 | |
f8c41851 SM |
5319 | per_bfd->debug_names_table = std::move (map); |
5320 | per_bfd->using_index = 1; | |
5321 | per_bfd->quick_file_names_table = | |
976ca316 | 5322 | create_quick_file_names_table (per_objfile->per_bfd->all_comp_units.size ()); |
927aa2e7 | 5323 | |
f8c41851 SM |
5324 | /* Save partial symtabs in the per_bfd object, for the benefit of subsequent |
5325 | objfiles using the same BFD. */ | |
5326 | gdb_assert (per_bfd->partial_symtabs == nullptr); | |
5327 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
5328 | ||
927aa2e7 JK |
5329 | return true; |
5330 | } | |
5331 | ||
927aa2e7 JK |
5332 | /* Type used to manage iterating over all CUs looking for a symbol for |
5333 | .debug_names. */ | |
5334 | ||
5335 | class dw2_debug_names_iterator | |
5336 | { | |
5337 | public: | |
927aa2e7 | 5338 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5339 | gdb::optional<block_enum> block_index, |
5340 | domain_enum domain, | |
fcf23d5b | 5341 | const char *name, dwarf2_per_objfile *per_objfile) |
2b79f376 | 5342 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5343 | m_addr (find_vec_in_debug_names (map, name, per_objfile)), |
5344 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5345 | {} |
5346 | ||
5347 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
fcf23d5b | 5348 | search_domain search, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5349 | : m_map (map), |
5350 | m_search (search), | |
fcf23d5b SM |
5351 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5352 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5353 | {} |
5354 | ||
3b00ef10 TT |
5355 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5356 | block_enum block_index, domain_enum domain, | |
fcf23d5b | 5357 | uint32_t namei, dwarf2_per_objfile *per_objfile) |
3b00ef10 | 5358 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5359 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5360 | m_per_objfile (per_objfile) | |
3b00ef10 TT |
5361 | {} |
5362 | ||
927aa2e7 JK |
5363 | /* Return the next matching CU or NULL if there are no more. */ |
5364 | dwarf2_per_cu_data *next (); | |
5365 | ||
5366 | private: | |
5367 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
976ca316 SM |
5368 | const char *name, |
5369 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 | 5370 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, |
976ca316 SM |
5371 | uint32_t namei, |
5372 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 JK |
5373 | |
5374 | /* The internalized form of .debug_names. */ | |
5375 | const mapped_debug_names &m_map; | |
5376 | ||
2b79f376 SM |
5377 | /* If set, only look for symbols that match that block. Valid values are |
5378 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5379 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5380 | |
5381 | /* The kind of symbol we're looking for. */ | |
5382 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5383 | const search_domain m_search = ALL_DOMAIN; | |
5384 | ||
5385 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5386 | not found. */ | |
5387 | const gdb_byte *m_addr; | |
fcf23d5b SM |
5388 | |
5389 | dwarf2_per_objfile *m_per_objfile; | |
927aa2e7 JK |
5390 | }; |
5391 | ||
5392 | const char * | |
fcf23d5b | 5393 | mapped_debug_names::namei_to_name |
976ca316 | 5394 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const |
927aa2e7 JK |
5395 | { |
5396 | const ULONGEST namei_string_offs | |
5397 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5398 | + namei * offset_size), | |
5399 | offset_size, | |
5400 | dwarf5_byte_order); | |
976ca316 | 5401 | return read_indirect_string_at_offset (per_objfile, namei_string_offs); |
927aa2e7 JK |
5402 | } |
5403 | ||
5404 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5405 | found, return pointer to its pool data. If NAME cannot be found, | |
5406 | return NULL. */ | |
5407 | ||
5408 | const gdb_byte * | |
5409 | dw2_debug_names_iterator::find_vec_in_debug_names | |
976ca316 SM |
5410 | (const mapped_debug_names &map, const char *name, |
5411 | dwarf2_per_objfile *per_objfile) | |
927aa2e7 JK |
5412 | { |
5413 | int (*cmp) (const char *, const char *); | |
5414 | ||
54ee4252 | 5415 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5416 | if (current_language->la_language == language_cplus |
5417 | || current_language->la_language == language_fortran | |
5418 | || current_language->la_language == language_d) | |
5419 | { | |
5420 | /* NAME is already canonical. Drop any qualifiers as | |
5421 | .debug_names does not contain any. */ | |
5422 | ||
5423 | if (strchr (name, '(') != NULL) | |
5424 | { | |
54ee4252 | 5425 | without_params = cp_remove_params (name); |
927aa2e7 | 5426 | if (without_params != NULL) |
54ee4252 | 5427 | name = without_params.get (); |
927aa2e7 JK |
5428 | } |
5429 | } | |
5430 | ||
5431 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5432 | ||
5433 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5434 | uint32_t namei | |
5435 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5436 | (map.bucket_table_reordered | |
5437 | + (full_hash % map.bucket_count)), 4, | |
5438 | map.dwarf5_byte_order); | |
5439 | if (namei == 0) | |
5440 | return NULL; | |
5441 | --namei; | |
5442 | if (namei >= map.name_count) | |
5443 | { | |
b98664d3 | 5444 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5445 | "[in module %s]"), |
5446 | namei, map.name_count, | |
fcf23d5b | 5447 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5448 | return NULL; |
5449 | } | |
5450 | ||
5451 | for (;;) | |
5452 | { | |
5453 | const uint32_t namei_full_hash | |
5454 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5455 | (map.hash_table_reordered + namei), 4, | |
5456 | map.dwarf5_byte_order); | |
5457 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5458 | return NULL; | |
5459 | ||
5460 | if (full_hash == namei_full_hash) | |
5461 | { | |
fcf23d5b | 5462 | const char *const namei_string = map.namei_to_name (namei, per_objfile); |
927aa2e7 JK |
5463 | |
5464 | #if 0 /* An expensive sanity check. */ | |
5465 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5466 | { | |
b98664d3 | 5467 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5468 | "[in module %s]"), |
5469 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5470 | return NULL; | |
5471 | } | |
5472 | #endif | |
5473 | ||
5474 | if (cmp (namei_string, name) == 0) | |
5475 | { | |
5476 | const ULONGEST namei_entry_offs | |
5477 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5478 | + namei * map.offset_size), | |
5479 | map.offset_size, map.dwarf5_byte_order); | |
5480 | return map.entry_pool + namei_entry_offs; | |
5481 | } | |
5482 | } | |
5483 | ||
5484 | ++namei; | |
5485 | if (namei >= map.name_count) | |
5486 | return NULL; | |
5487 | } | |
5488 | } | |
5489 | ||
5490 | const gdb_byte * | |
5491 | dw2_debug_names_iterator::find_vec_in_debug_names | |
fcf23d5b | 5492 | (const mapped_debug_names &map, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5493 | { |
5494 | if (namei >= map.name_count) | |
5495 | { | |
b98664d3 | 5496 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5497 | "[in module %s]"), |
5498 | namei, map.name_count, | |
fcf23d5b | 5499 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5500 | return NULL; |
5501 | } | |
5502 | ||
5503 | const ULONGEST namei_entry_offs | |
5504 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5505 | + namei * map.offset_size), | |
5506 | map.offset_size, map.dwarf5_byte_order); | |
5507 | return map.entry_pool + namei_entry_offs; | |
5508 | } | |
5509 | ||
5510 | /* See dw2_debug_names_iterator. */ | |
5511 | ||
5512 | dwarf2_per_cu_data * | |
5513 | dw2_debug_names_iterator::next () | |
5514 | { | |
5515 | if (m_addr == NULL) | |
5516 | return NULL; | |
5517 | ||
fcf23d5b SM |
5518 | dwarf2_per_bfd *per_bfd = m_per_objfile->per_bfd; |
5519 | struct objfile *objfile = m_per_objfile->objfile; | |
ed2dc618 | 5520 | bfd *const abfd = objfile->obfd; |
927aa2e7 JK |
5521 | |
5522 | again: | |
5523 | ||
5524 | unsigned int bytes_read; | |
5525 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5526 | m_addr += bytes_read; | |
5527 | if (abbrev == 0) | |
5528 | return NULL; | |
5529 | ||
5530 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5531 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5532 | { | |
b98664d3 | 5533 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5534 | "[in module %s]"), |
ed2dc618 | 5535 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5536 | return NULL; |
5537 | } | |
5538 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5539 | enum class symbol_linkage { |
5540 | unknown, | |
5541 | static_, | |
5542 | extern_, | |
23c13d42 | 5543 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5544 | dwarf2_per_cu_data *per_cu = NULL; |
5545 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5546 | { | |
5547 | ULONGEST ull; | |
5548 | switch (attr.form) | |
5549 | { | |
5550 | case DW_FORM_implicit_const: | |
5551 | ull = attr.implicit_const; | |
5552 | break; | |
5553 | case DW_FORM_flag_present: | |
5554 | ull = 1; | |
5555 | break; | |
5556 | case DW_FORM_udata: | |
5557 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5558 | m_addr += bytes_read; | |
5559 | break; | |
6dc55ce9 | 5560 | case DW_FORM_ref4: |
5561 | ull = read_4_bytes (abfd, m_addr); | |
5562 | m_addr += 4; | |
5563 | break; | |
5564 | case DW_FORM_ref8: | |
5565 | ull = read_8_bytes (abfd, m_addr); | |
5566 | m_addr += 8; | |
5567 | break; | |
5568 | case DW_FORM_ref_sig8: | |
5569 | ull = read_8_bytes (abfd, m_addr); | |
5570 | m_addr += 8; | |
5571 | break; | |
927aa2e7 | 5572 | default: |
b98664d3 | 5573 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5574 | dwarf_form_name (attr.form), |
ed2dc618 | 5575 | objfile_name (objfile)); |
927aa2e7 JK |
5576 | return NULL; |
5577 | } | |
5578 | switch (attr.dw_idx) | |
5579 | { | |
5580 | case DW_IDX_compile_unit: | |
5581 | /* Don't crash on bad data. */ | |
fcf23d5b | 5582 | if (ull >= m_per_objfile->per_bfd->all_comp_units.size ()) |
927aa2e7 | 5583 | { |
b98664d3 | 5584 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5585 | " [in module %s]"), |
5586 | pulongest (ull), | |
fcf23d5b | 5587 | objfile_name (objfile)); |
927aa2e7 JK |
5588 | continue; |
5589 | } | |
fcf23d5b | 5590 | per_cu = per_bfd->get_cutu (ull); |
927aa2e7 | 5591 | break; |
8af5c486 JK |
5592 | case DW_IDX_type_unit: |
5593 | /* Don't crash on bad data. */ | |
fcf23d5b | 5594 | if (ull >= per_bfd->all_type_units.size ()) |
8af5c486 | 5595 | { |
b98664d3 | 5596 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5597 | " [in module %s]"), |
5598 | pulongest (ull), | |
fcf23d5b | 5599 | objfile_name (objfile)); |
8af5c486 JK |
5600 | continue; |
5601 | } | |
fcf23d5b | 5602 | per_cu = &per_bfd->get_tu (ull)->per_cu; |
8af5c486 | 5603 | break; |
6dc55ce9 | 5604 | case DW_IDX_die_offset: |
5605 | /* In a per-CU index (as opposed to a per-module index), index | |
5606 | entries without CU attribute implicitly refer to the single CU. */ | |
5607 | if (per_cu == NULL) | |
fcf23d5b | 5608 | per_cu = per_bfd->get_cu (0); |
6dc55ce9 | 5609 | break; |
927aa2e7 JK |
5610 | case DW_IDX_GNU_internal: |
5611 | if (!m_map.augmentation_is_gdb) | |
5612 | break; | |
23c13d42 | 5613 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5614 | break; |
5615 | case DW_IDX_GNU_external: | |
5616 | if (!m_map.augmentation_is_gdb) | |
5617 | break; | |
23c13d42 | 5618 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5619 | break; |
5620 | } | |
5621 | } | |
5622 | ||
5623 | /* Skip if already read in. */ | |
fcf23d5b | 5624 | if (m_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5625 | goto again; |
5626 | ||
5627 | /* Check static vs global. */ | |
23c13d42 | 5628 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5629 | { |
2b79f376 | 5630 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5631 | const bool symbol_is_static = |
5632 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5633 | if (want_static != symbol_is_static) |
2b79f376 | 5634 | goto again; |
927aa2e7 JK |
5635 | } |
5636 | ||
5637 | /* Match dw2_symtab_iter_next, symbol_kind | |
5638 | and debug_names::psymbol_tag. */ | |
5639 | switch (m_domain) | |
5640 | { | |
5641 | case VAR_DOMAIN: | |
5642 | switch (indexval.dwarf_tag) | |
5643 | { | |
5644 | case DW_TAG_variable: | |
5645 | case DW_TAG_subprogram: | |
5646 | /* Some types are also in VAR_DOMAIN. */ | |
5647 | case DW_TAG_typedef: | |
5648 | case DW_TAG_structure_type: | |
5649 | break; | |
5650 | default: | |
5651 | goto again; | |
5652 | } | |
5653 | break; | |
5654 | case STRUCT_DOMAIN: | |
5655 | switch (indexval.dwarf_tag) | |
5656 | { | |
5657 | case DW_TAG_typedef: | |
5658 | case DW_TAG_structure_type: | |
5659 | break; | |
5660 | default: | |
5661 | goto again; | |
5662 | } | |
5663 | break; | |
5664 | case LABEL_DOMAIN: | |
5665 | switch (indexval.dwarf_tag) | |
5666 | { | |
5667 | case 0: | |
5668 | case DW_TAG_variable: | |
5669 | break; | |
5670 | default: | |
5671 | goto again; | |
5672 | } | |
5673 | break; | |
59c35742 AB |
5674 | case MODULE_DOMAIN: |
5675 | switch (indexval.dwarf_tag) | |
5676 | { | |
5677 | case DW_TAG_module: | |
5678 | break; | |
5679 | default: | |
5680 | goto again; | |
5681 | } | |
5682 | break; | |
927aa2e7 JK |
5683 | default: |
5684 | break; | |
5685 | } | |
5686 | ||
5687 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5688 | debug_names::psymbol_tag. */ | |
5689 | switch (m_search) | |
4b514bc8 | 5690 | { |
927aa2e7 JK |
5691 | case VARIABLES_DOMAIN: |
5692 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5693 | { |
927aa2e7 JK |
5694 | case DW_TAG_variable: |
5695 | break; | |
5696 | default: | |
5697 | goto again; | |
4b514bc8 | 5698 | } |
927aa2e7 JK |
5699 | break; |
5700 | case FUNCTIONS_DOMAIN: | |
5701 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5702 | { |
927aa2e7 JK |
5703 | case DW_TAG_subprogram: |
5704 | break; | |
5705 | default: | |
5706 | goto again; | |
4b514bc8 | 5707 | } |
927aa2e7 JK |
5708 | break; |
5709 | case TYPES_DOMAIN: | |
5710 | switch (indexval.dwarf_tag) | |
5711 | { | |
5712 | case DW_TAG_typedef: | |
5713 | case DW_TAG_structure_type: | |
5714 | break; | |
5715 | default: | |
5716 | goto again; | |
5717 | } | |
5718 | break; | |
59c35742 AB |
5719 | case MODULES_DOMAIN: |
5720 | switch (indexval.dwarf_tag) | |
5721 | { | |
5722 | case DW_TAG_module: | |
5723 | break; | |
5724 | default: | |
5725 | goto again; | |
5726 | } | |
927aa2e7 JK |
5727 | default: |
5728 | break; | |
4b514bc8 | 5729 | } |
927aa2e7 JK |
5730 | |
5731 | return per_cu; | |
4b514bc8 | 5732 | } |
61920122 | 5733 | |
927aa2e7 | 5734 | static struct compunit_symtab * |
c7f839cb | 5735 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5736 | const char *name, domain_enum domain) |
4b514bc8 | 5737 | { |
976ca316 | 5738 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
61920122 | 5739 | |
976ca316 | 5740 | const auto &mapp = per_objfile->per_bfd->debug_names_table; |
927aa2e7 | 5741 | if (!mapp) |
61920122 | 5742 | { |
927aa2e7 JK |
5743 | /* index is NULL if OBJF_READNOW. */ |
5744 | return NULL; | |
5745 | } | |
5746 | const auto &map = *mapp; | |
9291a0cd | 5747 | |
976ca316 | 5748 | dw2_debug_names_iterator iter (map, block_index, domain, name, per_objfile); |
9703b513 | 5749 | |
927aa2e7 JK |
5750 | struct compunit_symtab *stab_best = NULL; |
5751 | struct dwarf2_per_cu_data *per_cu; | |
5752 | while ((per_cu = iter.next ()) != NULL) | |
5753 | { | |
5754 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 5755 | compunit_symtab *stab |
976ca316 | 5756 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 | 5757 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5758 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5759 | |
927aa2e7 JK |
5760 | sym = block_find_symbol (block, name, domain, |
5761 | block_find_non_opaque_type_preferred, | |
5762 | &with_opaque); | |
9703b513 | 5763 | |
927aa2e7 JK |
5764 | /* Some caution must be observed with overloaded functions and |
5765 | methods, since the index will not contain any overload | |
5766 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5767 | |
927aa2e7 | 5768 | if (sym != NULL |
987012b8 | 5769 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5770 | return stab; |
5771 | if (with_opaque != NULL | |
987012b8 | 5772 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5773 | stab_best = stab; |
9703b513 | 5774 | |
927aa2e7 | 5775 | /* Keep looking through other CUs. */ |
9703b513 TT |
5776 | } |
5777 | ||
927aa2e7 | 5778 | return stab_best; |
9703b513 TT |
5779 | } |
5780 | ||
927aa2e7 JK |
5781 | /* This dumps minimal information about .debug_names. It is called |
5782 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5783 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5784 | |
927aa2e7 JK |
5785 | static void |
5786 | dw2_debug_names_dump (struct objfile *objfile) | |
5787 | { | |
976ca316 | 5788 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 5789 | |
976ca316 | 5790 | gdb_assert (per_objfile->per_bfd->using_index); |
927aa2e7 | 5791 | printf_filtered (".debug_names:"); |
976ca316 | 5792 | if (per_objfile->per_bfd->debug_names_table) |
927aa2e7 JK |
5793 | printf_filtered (" exists\n"); |
5794 | else | |
5795 | printf_filtered (" faked for \"readnow\"\n"); | |
5796 | printf_filtered ("\n"); | |
9291a0cd TT |
5797 | } |
5798 | ||
9291a0cd | 5799 | static void |
927aa2e7 JK |
5800 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5801 | const char *func_name) | |
9291a0cd | 5802 | { |
976ca316 | 5803 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 5804 | |
976ca316 SM |
5805 | /* per_objfile->per_bfd->debug_names_table is NULL if OBJF_READNOW. */ |
5806 | if (per_objfile->per_bfd->debug_names_table) | |
24c79950 | 5807 | { |
976ca316 | 5808 | const mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
24c79950 | 5809 | |
fcf23d5b | 5810 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name, |
976ca316 | 5811 | per_objfile); |
24c79950 | 5812 | |
927aa2e7 JK |
5813 | struct dwarf2_per_cu_data *per_cu; |
5814 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5815 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 JK |
5816 | } |
5817 | } | |
24c79950 | 5818 | |
3b00ef10 TT |
5819 | static void |
5820 | dw2_debug_names_map_matching_symbols | |
5821 | (struct objfile *objfile, | |
5822 | const lookup_name_info &name, domain_enum domain, | |
5823 | int global, | |
5824 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5825 | symbol_compare_ftype *ordered_compare) | |
5826 | { | |
976ca316 | 5827 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3b00ef10 TT |
5828 | |
5829 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
976ca316 | 5830 | if (!per_objfile->per_bfd->debug_names_table) |
3b00ef10 TT |
5831 | return; |
5832 | ||
976ca316 | 5833 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
3b00ef10 TT |
5834 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
5835 | ||
5836 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5837 | auto matcher = [&] (const char *symname) | |
5838 | { | |
5839 | if (ordered_compare == nullptr) | |
5840 | return true; | |
5841 | return ordered_compare (symname, match_name) == 0; | |
5842 | }; | |
5843 | ||
5844 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5845 | [&] (offset_type namei) | |
5846 | { | |
5847 | /* The name was matched, now expand corresponding CUs that were | |
5848 | marked. */ | |
fcf23d5b | 5849 | dw2_debug_names_iterator iter (map, block_kind, domain, namei, |
976ca316 | 5850 | per_objfile); |
3b00ef10 TT |
5851 | |
5852 | struct dwarf2_per_cu_data *per_cu; | |
5853 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5854 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 5855 | nullptr); |
3b00ef10 | 5856 | return true; |
976ca316 | 5857 | }, per_objfile); |
3b00ef10 TT |
5858 | |
5859 | /* It's a shame we couldn't do this inside the | |
5860 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5861 | that have already been expanded. Instead, this loop matches what | |
5862 | the psymtab code does. */ | |
976ca316 | 5863 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3b00ef10 | 5864 | { |
976ca316 | 5865 | compunit_symtab *symtab = per_objfile->get_symtab (per_cu); |
af758d11 | 5866 | if (symtab != nullptr) |
3b00ef10 TT |
5867 | { |
5868 | const struct block *block | |
af758d11 | 5869 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (symtab), block_kind); |
3b00ef10 TT |
5870 | if (!iterate_over_symbols_terminated (block, name, |
5871 | domain, callback)) | |
5872 | break; | |
5873 | } | |
5874 | } | |
5875 | } | |
5876 | ||
927aa2e7 JK |
5877 | static void |
5878 | dw2_debug_names_expand_symtabs_matching | |
5879 | (struct objfile *objfile, | |
5880 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 5881 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
5882 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
5883 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5884 | enum search_domain kind) | |
5885 | { | |
976ca316 | 5886 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 5887 | |
927aa2e7 | 5888 | /* debug_names_table is NULL if OBJF_READNOW. */ |
976ca316 | 5889 | if (!per_objfile->per_bfd->debug_names_table) |
927aa2e7 | 5890 | return; |
9291a0cd | 5891 | |
976ca316 | 5892 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
24c79950 | 5893 | |
c1a66c06 TV |
5894 | if (symbol_matcher == NULL && lookup_name == NULL) |
5895 | { | |
976ca316 | 5896 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
5897 | { |
5898 | QUIT; | |
5899 | ||
976ca316 SM |
5900 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
5901 | expansion_notify); | |
c1a66c06 TV |
5902 | } |
5903 | return; | |
5904 | } | |
5905 | ||
976ca316 | 5906 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
bbf2f4df | 5907 | |
c1a66c06 | 5908 | dw2_expand_symtabs_matching_symbol (map, *lookup_name, |
44ed8f3e PA |
5909 | symbol_matcher, |
5910 | kind, [&] (offset_type namei) | |
927aa2e7 | 5911 | { |
927aa2e7 JK |
5912 | /* The name was matched, now expand corresponding CUs that were |
5913 | marked. */ | |
976ca316 | 5914 | dw2_debug_names_iterator iter (map, kind, namei, per_objfile); |
bbf2f4df | 5915 | |
927aa2e7 JK |
5916 | struct dwarf2_per_cu_data *per_cu; |
5917 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 SM |
5918 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
5919 | expansion_notify); | |
3b00ef10 | 5920 | return true; |
976ca316 | 5921 | }, per_objfile); |
9291a0cd TT |
5922 | } |
5923 | ||
927aa2e7 | 5924 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
5925 | { |
5926 | dw2_has_symbols, | |
5927 | dw2_find_last_source_symtab, | |
5928 | dw2_forget_cached_source_info, | |
f8eba3c6 | 5929 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 5930 | dw2_debug_names_lookup_symbol, |
d3214198 | 5931 | NULL, |
9291a0cd | 5932 | dw2_print_stats, |
927aa2e7 | 5933 | dw2_debug_names_dump, |
927aa2e7 | 5934 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 5935 | dw2_expand_all_symtabs, |
652a8996 | 5936 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 5937 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 5938 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 5939 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 5940 | NULL, |
9291a0cd TT |
5941 | dw2_map_symbol_filenames |
5942 | }; | |
5943 | ||
4485a1c1 | 5944 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5989a64e | 5945 | to either a dwarf2_per_bfd or dwz_file object. */ |
4485a1c1 SM |
5946 | |
5947 | template <typename T> | |
5948 | static gdb::array_view<const gdb_byte> | |
5949 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5950 | { | |
5951 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5952 | ||
96b79293 | 5953 | if (section->empty ()) |
4485a1c1 SM |
5954 | return {}; |
5955 | ||
5956 | /* Older elfutils strip versions could keep the section in the main | |
5957 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5958 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5959 | return {}; |
5960 | ||
96b79293 | 5961 | section->read (obj); |
4485a1c1 | 5962 | |
8bebfcda PA |
5963 | /* dwarf2_section_info::size is a bfd_size_type, while |
5964 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5965 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5966 | is 32-bit. So we need an explicit narrowing conversion here. | |
5967 | This is fine, because it's impossible to allocate or mmap an | |
5968 | array/buffer larger than what size_t can represent. */ | |
5969 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5970 | } |
5971 | ||
87d6a7aa SM |
5972 | /* Lookup the index cache for the contents of the index associated to |
5973 | DWARF2_OBJ. */ | |
5974 | ||
5975 | static gdb::array_view<const gdb_byte> | |
5989a64e | 5976 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd) |
87d6a7aa SM |
5977 | { |
5978 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5979 | if (build_id == nullptr) | |
5980 | return {}; | |
5981 | ||
5982 | return global_index_cache.lookup_gdb_index (build_id, | |
5989a64e | 5983 | &dwarf2_per_bfd->index_cache_res); |
87d6a7aa SM |
5984 | } |
5985 | ||
5986 | /* Same as the above, but for DWZ. */ | |
5987 | ||
5988 | static gdb::array_view<const gdb_byte> | |
5989 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5990 | { | |
5991 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5992 | if (build_id == nullptr) | |
5993 | return {}; | |
5994 | ||
5995 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5996 | } | |
5997 | ||
3c0aa29a | 5998 | /* See symfile.h. */ |
9291a0cd | 5999 | |
3c0aa29a PA |
6000 | bool |
6001 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6002 | { |
976ca316 SM |
6003 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6004 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
ed2dc618 | 6005 | |
9291a0cd TT |
6006 | /* If we're about to read full symbols, don't bother with the |
6007 | indices. In this case we also don't care if some other debug | |
6008 | format is making psymtabs, because they are all about to be | |
6009 | expanded anyway. */ | |
6010 | if ((objfile->flags & OBJF_READNOW)) | |
6011 | { | |
17ee85fc TT |
6012 | /* When using READNOW, the using_index flag (set below) indicates that |
6013 | PER_BFD was already initialized, when we loaded some other objfile. */ | |
6014 | if (per_bfd->using_index) | |
6015 | { | |
6016 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6017 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6018 | return true; |
6019 | } | |
6020 | ||
6021 | per_bfd->using_index = 1; | |
976ca316 SM |
6022 | create_all_comp_units (per_objfile); |
6023 | create_all_type_units (per_objfile); | |
17ee85fc TT |
6024 | per_bfd->quick_file_names_table |
6025 | = create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
976ca316 | 6026 | per_objfile->resize_symtabs (); |
9291a0cd | 6027 | |
17ee85fc TT |
6028 | for (int i = 0; i < (per_bfd->all_comp_units.size () |
6029 | + per_bfd->all_type_units.size ()); ++i) | |
9291a0cd | 6030 | { |
17ee85fc | 6031 | dwarf2_per_cu_data *per_cu = per_bfd->get_cutu (i); |
9291a0cd | 6032 | |
17ee85fc | 6033 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
e254ef6a | 6034 | struct dwarf2_per_cu_quick_data); |
9291a0cd TT |
6035 | } |
6036 | ||
6037 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6038 | these functions will be no-ops because we will have expanded | |
6039 | all symtabs. */ | |
3c0aa29a PA |
6040 | *index_kind = dw_index_kind::GDB_INDEX; |
6041 | return true; | |
9291a0cd TT |
6042 | } |
6043 | ||
17ee85fc TT |
6044 | /* Was a debug names index already read when we processed an objfile sharing |
6045 | PER_BFD? */ | |
6046 | if (per_bfd->debug_names_table != nullptr) | |
6047 | { | |
6048 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
f8c41851 | 6049 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 6050 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6051 | return true; |
6052 | } | |
6053 | ||
6054 | /* Was a GDB index already read when we processed an objfile sharing | |
6055 | PER_BFD? */ | |
6056 | if (per_bfd->index_table != nullptr) | |
6057 | { | |
6058 | *index_kind = dw_index_kind::GDB_INDEX; | |
f8c41851 | 6059 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 6060 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6061 | return true; |
6062 | } | |
6063 | ||
efb763a5 SM |
6064 | /* There might already be partial symtabs built for this BFD. This happens |
6065 | when loading the same binary twice with the index-cache enabled. If so, | |
6066 | don't try to read an index. The objfile / per_objfile initialization will | |
6067 | be completed in dwarf2_build_psymtabs, in the standard partial symtabs | |
6068 | code path. */ | |
6069 | if (per_bfd->partial_symtabs != nullptr) | |
6070 | return false; | |
6071 | ||
976ca316 | 6072 | if (dwarf2_read_debug_names (per_objfile)) |
3c0aa29a PA |
6073 | { |
6074 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
976ca316 | 6075 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6076 | return true; |
6077 | } | |
927aa2e7 | 6078 | |
976ca316 | 6079 | if (dwarf2_read_gdb_index (per_objfile, |
5989a64e | 6080 | get_gdb_index_contents_from_section<struct dwarf2_per_bfd>, |
4485a1c1 | 6081 | get_gdb_index_contents_from_section<dwz_file>)) |
3c0aa29a PA |
6082 | { |
6083 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6084 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6085 | return true; |
6086 | } | |
9291a0cd | 6087 | |
87d6a7aa | 6088 | /* ... otherwise, try to find the index in the index cache. */ |
976ca316 | 6089 | if (dwarf2_read_gdb_index (per_objfile, |
87d6a7aa SM |
6090 | get_gdb_index_contents_from_cache, |
6091 | get_gdb_index_contents_from_cache_dwz)) | |
6092 | { | |
6093 | global_index_cache.hit (); | |
6094 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6095 | per_objfile->resize_symtabs (); |
87d6a7aa SM |
6096 | return true; |
6097 | } | |
6098 | ||
6099 | global_index_cache.miss (); | |
3c0aa29a | 6100 | return false; |
9291a0cd TT |
6101 | } |
6102 | ||
6103 | \f | |
6104 | ||
dce234bc PP |
6105 | /* Build a partial symbol table. */ |
6106 | ||
6107 | void | |
f29dff0a | 6108 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6109 | { |
976ca316 SM |
6110 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6111 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
17ee85fc TT |
6112 | |
6113 | if (per_bfd->partial_symtabs != nullptr) | |
6114 | { | |
6115 | /* Partial symbols were already read, so now we can simply | |
6116 | attach them. */ | |
6117 | objfile->partial_symtabs = per_bfd->partial_symtabs; | |
976ca316 | 6118 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6119 | return; |
6120 | } | |
c9bf0622 | 6121 | |
6eee24ce | 6122 | init_psymbol_list (objfile, 1024); |
c906108c | 6123 | |
a70b8144 | 6124 | try |
c9bf0622 TT |
6125 | { |
6126 | /* This isn't really ideal: all the data we allocate on the | |
6127 | objfile's obstack is still uselessly kept around. However, | |
6128 | freeing it seems unsafe. */ | |
906768f9 | 6129 | psymtab_discarder psymtabs (objfile); |
976ca316 | 6130 | dwarf2_build_psymtabs_hard (per_objfile); |
906768f9 | 6131 | psymtabs.keep (); |
87d6a7aa | 6132 | |
976ca316 | 6133 | per_objfile->resize_symtabs (); |
af758d11 | 6134 | |
87d6a7aa | 6135 | /* (maybe) store an index in the cache. */ |
976ca316 | 6136 | global_index_cache.store (per_objfile); |
c9bf0622 | 6137 | } |
230d2906 | 6138 | catch (const gdb_exception_error &except) |
492d29ea PA |
6139 | { |
6140 | exception_print (gdb_stderr, except); | |
6141 | } | |
17ee85fc TT |
6142 | |
6143 | /* Finish by setting the local reference to partial symtabs, so that | |
6144 | we don't try to read them again if reading another objfile with the same | |
6145 | BFD. If we can't in fact share, this won't make a difference anyway as | |
6146 | the dwarf2_per_bfd object won't be shared. */ | |
6147 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
c906108c | 6148 | } |
c906108c | 6149 | |
3b80fe9b DE |
6150 | /* Find the base address of the compilation unit for range lists and |
6151 | location lists. It will normally be specified by DW_AT_low_pc. | |
6152 | In DWARF-3 draft 4, the base address could be overridden by | |
6153 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6154 | compilation units with discontinuous ranges. */ | |
6155 | ||
6156 | static void | |
6157 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6158 | { | |
6159 | struct attribute *attr; | |
6160 | ||
2b24b6e4 | 6161 | cu->base_address.reset (); |
3b80fe9b DE |
6162 | |
6163 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6164 | if (attr != nullptr) |
2b24b6e4 | 6165 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6166 | else |
6167 | { | |
6168 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6169 | if (attr != nullptr) |
2b24b6e4 | 6170 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6171 | } |
6172 | } | |
6173 | ||
36586728 TT |
6174 | /* Helper function that returns the proper abbrev section for |
6175 | THIS_CU. */ | |
6176 | ||
6177 | static struct dwarf2_section_info * | |
6178 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6179 | { | |
6180 | struct dwarf2_section_info *abbrev; | |
c3699833 | 6181 | dwarf2_per_bfd *per_bfd = this_cu->per_bfd; |
36586728 TT |
6182 | |
6183 | if (this_cu->is_dwz) | |
c3699833 | 6184 | abbrev = &dwarf2_get_dwz_file (per_bfd)->abbrev; |
36586728 | 6185 | else |
c3699833 | 6186 | abbrev = &per_bfd->abbrev; |
36586728 TT |
6187 | |
6188 | return abbrev; | |
6189 | } | |
6190 | ||
f4dc4d17 DE |
6191 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6192 | ||
6193 | static sect_offset | |
976ca316 | 6194 | read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6195 | struct dwarf2_section_info *section, |
9c541725 | 6196 | sect_offset sect_off) |
f4dc4d17 | 6197 | { |
96b79293 | 6198 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 6199 | const gdb_byte *info_ptr; |
ac298888 | 6200 | unsigned int initial_length_size, offset_size; |
43988095 | 6201 | uint16_t version; |
f4dc4d17 | 6202 | |
976ca316 | 6203 | section->read (per_objfile->objfile); |
9c541725 | 6204 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6205 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6206 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6207 | info_ptr += initial_length_size; |
6208 | ||
6209 | version = read_2_bytes (abfd, info_ptr); | |
6210 | info_ptr += 2; | |
6211 | if (version >= 5) | |
6212 | { | |
6213 | /* Skip unit type and address size. */ | |
6214 | info_ptr += 2; | |
6215 | } | |
6216 | ||
24aa364d | 6217 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6218 | } |
6219 | ||
b83470bf TT |
6220 | /* A partial symtab that is used only for include files. */ |
6221 | struct dwarf2_include_psymtab : public partial_symtab | |
6222 | { | |
6223 | dwarf2_include_psymtab (const char *filename, struct objfile *objfile) | |
6224 | : partial_symtab (filename, objfile) | |
6225 | { | |
6226 | } | |
6227 | ||
6228 | void read_symtab (struct objfile *objfile) override | |
6229 | { | |
194d088f TV |
6230 | /* It's an include file, no symbols to read for it. |
6231 | Everything is in the includer symtab. */ | |
6232 | ||
6233 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
6234 | expansion of the includer psymtab. We use the dependencies[0] field to | |
6235 | model the includer. But if we go the regular route of calling | |
6236 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
6237 | to expand the includer, we'll only use expand_psymtab on the includer | |
6238 | (making it a non-toplevel psymtab), while if we expand the includer via | |
6239 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
6240 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
6241 | psymtab, and trigger read_symtab on the includer here directly. */ | |
6242 | includer ()->read_symtab (objfile); | |
b83470bf TT |
6243 | } |
6244 | ||
6245 | void expand_psymtab (struct objfile *objfile) override | |
6246 | { | |
194d088f TV |
6247 | /* This is not called by read_symtab, and should not be called by any |
6248 | expand_dependencies. */ | |
6249 | gdb_assert (false); | |
b83470bf TT |
6250 | } |
6251 | ||
5717c425 | 6252 | bool readin_p (struct objfile *objfile) const override |
b83470bf | 6253 | { |
5717c425 | 6254 | return includer ()->readin_p (objfile); |
b83470bf TT |
6255 | } |
6256 | ||
5717c425 | 6257 | compunit_symtab *get_compunit_symtab (struct objfile *objfile) const override |
b83470bf TT |
6258 | { |
6259 | return nullptr; | |
6260 | } | |
6261 | ||
6262 | private: | |
194d088f TV |
6263 | partial_symtab *includer () const |
6264 | { | |
6265 | /* An include psymtab has exactly one dependency: the psymtab that | |
6266 | includes it. */ | |
6267 | gdb_assert (this->number_of_dependencies == 1); | |
6268 | return this->dependencies[0]; | |
6269 | } | |
b83470bf TT |
6270 | }; |
6271 | ||
aaa75496 JB |
6272 | /* Allocate a new partial symtab for file named NAME and mark this new |
6273 | partial symtab as being an include of PST. */ | |
6274 | ||
6275 | static void | |
891813be | 6276 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
aaa75496 JB |
6277 | struct objfile *objfile) |
6278 | { | |
b83470bf | 6279 | dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile); |
aaa75496 | 6280 | |
fbd9ab74 | 6281 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
45940949 | 6282 | subpst->dirname = pst->dirname; |
fbd9ab74 | 6283 | |
a9342b62 | 6284 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6285 | subpst->dependencies[0] = pst; |
6286 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
6287 | } |
6288 | ||
6289 | /* Read the Line Number Program data and extract the list of files | |
6290 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6291 | partial symtab for each of these included files. */ |
aaa75496 JB |
6292 | |
6293 | static void | |
6294 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6295 | struct die_info *die, |
891813be | 6296 | dwarf2_psymtab *pst) |
aaa75496 | 6297 | { |
fff8551c | 6298 | line_header_up lh; |
d85a05f0 | 6299 | struct attribute *attr; |
aaa75496 | 6300 | |
d85a05f0 | 6301 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
435d3d88 | 6302 | if (attr != nullptr) |
9c541725 | 6303 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6304 | if (lh == NULL) |
6305 | return; /* No linetable, so no includes. */ | |
6306 | ||
79748972 TT |
6307 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6308 | that we pass in the raw text_low here; that is ok because we're | |
6309 | only decoding the line table to make include partial symtabs, and | |
6310 | so the addresses aren't really used. */ | |
4ae976d1 | 6311 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6312 | pst->raw_text_low (), 1); |
aaa75496 JB |
6313 | } |
6314 | ||
348e048f | 6315 | static hashval_t |
52dc124a | 6316 | hash_signatured_type (const void *item) |
348e048f | 6317 | { |
9a3c8263 SM |
6318 | const struct signatured_type *sig_type |
6319 | = (const struct signatured_type *) item; | |
9a619af0 | 6320 | |
348e048f | 6321 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6322 | return sig_type->signature; |
348e048f DE |
6323 | } |
6324 | ||
6325 | static int | |
52dc124a | 6326 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6327 | { |
9a3c8263 SM |
6328 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6329 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6330 | |
348e048f DE |
6331 | return lhs->signature == rhs->signature; |
6332 | } | |
6333 | ||
1fd400ff TT |
6334 | /* Allocate a hash table for signatured types. */ |
6335 | ||
b0b6a987 | 6336 | static htab_up |
298e9637 | 6337 | allocate_signatured_type_table () |
1fd400ff | 6338 | { |
b0b6a987 TT |
6339 | return htab_up (htab_create_alloc (41, |
6340 | hash_signatured_type, | |
6341 | eq_signatured_type, | |
6342 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6343 | } |
6344 | ||
d467dd73 | 6345 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6346 | |
6347 | static int | |
d467dd73 | 6348 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6349 | { |
9a3c8263 | 6350 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6351 | std::vector<signatured_type *> *all_type_units |
6352 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6353 | |
b2bdb8cf | 6354 | all_type_units->push_back (sigt); |
1fd400ff TT |
6355 | |
6356 | return 1; | |
6357 | } | |
6358 | ||
78d4d2c5 | 6359 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6360 | and fill them into TYPES_HTAB. It will process only type units, |
6361 | therefore DW_UT_type. */ | |
c88ee1f0 | 6362 | |
78d4d2c5 | 6363 | static void |
976ca316 | 6364 | create_debug_type_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6365 | struct dwo_file *dwo_file, |
b0b6a987 | 6366 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6367 | rcuh_kind section_kind) |
348e048f | 6368 | { |
976ca316 | 6369 | struct objfile *objfile = per_objfile->objfile; |
4bdcc0c1 | 6370 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6371 | bfd *abfd; |
6372 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6373 | |
4bdcc0c1 DE |
6374 | abbrev_section = (dwo_file != NULL |
6375 | ? &dwo_file->sections.abbrev | |
976ca316 | 6376 | : &per_objfile->per_bfd->abbrev); |
4bdcc0c1 | 6377 | |
b4f54984 | 6378 | if (dwarf_read_debug) |
43988095 | 6379 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
96b79293 TT |
6380 | section->get_name (), |
6381 | abbrev_section->get_file_name ()); | |
09406207 | 6382 | |
96b79293 | 6383 | section->read (objfile); |
78d4d2c5 | 6384 | info_ptr = section->buffer; |
348e048f | 6385 | |
78d4d2c5 JK |
6386 | if (info_ptr == NULL) |
6387 | return; | |
348e048f | 6388 | |
78d4d2c5 JK |
6389 | /* We can't set abfd until now because the section may be empty or |
6390 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6391 | abfd = section->get_bfd_owner (); |
348e048f | 6392 | |
c0ab21c2 TT |
6393 | /* We don't use cutu_reader here because we don't need to read |
6394 | any dies: the signature is in the header. */ | |
3019eac3 | 6395 | |
78d4d2c5 JK |
6396 | end_ptr = info_ptr + section->size; |
6397 | while (info_ptr < end_ptr) | |
6398 | { | |
78d4d2c5 JK |
6399 | struct signatured_type *sig_type; |
6400 | struct dwo_unit *dwo_tu; | |
6401 | void **slot; | |
6402 | const gdb_byte *ptr = info_ptr; | |
6403 | struct comp_unit_head header; | |
6404 | unsigned int length; | |
8b70b953 | 6405 | |
9c541725 | 6406 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6407 | |
a49dd8dd JK |
6408 | /* Initialize it due to a false compiler warning. */ |
6409 | header.signature = -1; | |
9c541725 | 6410 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6411 | |
78d4d2c5 JK |
6412 | /* We need to read the type's signature in order to build the hash |
6413 | table, but we don't need anything else just yet. */ | |
348e048f | 6414 | |
976ca316 | 6415 | ptr = read_and_check_comp_unit_head (per_objfile, &header, section, |
43988095 | 6416 | abbrev_section, ptr, section_kind); |
348e048f | 6417 | |
4057dfde | 6418 | length = header.get_length (); |
6caca83c | 6419 | |
78d4d2c5 JK |
6420 | /* Skip dummy type units. */ |
6421 | if (ptr >= info_ptr + length | |
43988095 | 6422 | || peek_abbrev_code (abfd, ptr) == 0 |
d2854d8d CT |
6423 | || (header.unit_type != DW_UT_type |
6424 | && header.unit_type != DW_UT_split_type)) | |
78d4d2c5 JK |
6425 | { |
6426 | info_ptr += length; | |
6427 | continue; | |
6428 | } | |
dee91e82 | 6429 | |
78d4d2c5 JK |
6430 | if (types_htab == NULL) |
6431 | { | |
6432 | if (dwo_file) | |
298e9637 | 6433 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6434 | else |
298e9637 | 6435 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6436 | } |
8b70b953 | 6437 | |
78d4d2c5 JK |
6438 | if (dwo_file) |
6439 | { | |
6440 | sig_type = NULL; | |
976ca316 | 6441 | dwo_tu = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, dwo_unit); |
78d4d2c5 | 6442 | dwo_tu->dwo_file = dwo_file; |
43988095 | 6443 | dwo_tu->signature = header.signature; |
9c541725 | 6444 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6445 | dwo_tu->section = section; |
9c541725 | 6446 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6447 | dwo_tu->length = length; |
6448 | } | |
6449 | else | |
6450 | { | |
6451 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6452 | The real type_offset is in the DWO file. */ | |
6453 | dwo_tu = NULL; | |
976ca316 | 6454 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
43988095 | 6455 | sig_type->signature = header.signature; |
9c541725 | 6456 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 JK |
6457 | sig_type->per_cu.is_debug_types = 1; |
6458 | sig_type->per_cu.section = section; | |
9c541725 | 6459 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6460 | sig_type->per_cu.length = length; |
6461 | } | |
6462 | ||
b0b6a987 | 6463 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6464 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6465 | INSERT); | |
6466 | gdb_assert (slot != NULL); | |
6467 | if (*slot != NULL) | |
6468 | { | |
9c541725 | 6469 | sect_offset dup_sect_off; |
0349ea22 | 6470 | |
3019eac3 DE |
6471 | if (dwo_file) |
6472 | { | |
78d4d2c5 JK |
6473 | const struct dwo_unit *dup_tu |
6474 | = (const struct dwo_unit *) *slot; | |
6475 | ||
9c541725 | 6476 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6477 | } |
6478 | else | |
6479 | { | |
78d4d2c5 JK |
6480 | const struct signatured_type *dup_tu |
6481 | = (const struct signatured_type *) *slot; | |
6482 | ||
9c541725 | 6483 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6484 | } |
8b70b953 | 6485 | |
b98664d3 | 6486 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6487 | " the entry at offset %s, signature %s"), |
6488 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6489 | hex_string (header.signature)); |
78d4d2c5 JK |
6490 | } |
6491 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6492 | |
78d4d2c5 | 6493 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6494 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6495 | sect_offset_str (sect_off), | |
43988095 | 6496 | hex_string (header.signature)); |
3019eac3 | 6497 | |
78d4d2c5 JK |
6498 | info_ptr += length; |
6499 | } | |
6500 | } | |
3019eac3 | 6501 | |
78d4d2c5 JK |
6502 | /* Create the hash table of all entries in the .debug_types |
6503 | (or .debug_types.dwo) section(s). | |
6504 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6505 | otherwise it is NULL. | |
b3c8eb43 | 6506 | |
78d4d2c5 | 6507 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6508 | |
78d4d2c5 | 6509 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6510 | |
78d4d2c5 | 6511 | static void |
976ca316 | 6512 | create_debug_types_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6513 | struct dwo_file *dwo_file, |
fd5866f6 | 6514 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6515 | htab_up &types_htab) |
78d4d2c5 | 6516 | { |
fd5866f6 | 6517 | for (dwarf2_section_info §ion : type_sections) |
976ca316 SM |
6518 | create_debug_type_hash_table (per_objfile, dwo_file, §ion, types_htab, |
6519 | rcuh_kind::TYPE); | |
3019eac3 DE |
6520 | } |
6521 | ||
6522 | /* Create the hash table of all entries in the .debug_types section, | |
6523 | and initialize all_type_units. | |
6524 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6525 | otherwise non-zero. */ | |
6526 | ||
6527 | static int | |
976ca316 | 6528 | create_all_type_units (dwarf2_per_objfile *per_objfile) |
3019eac3 | 6529 | { |
b0b6a987 | 6530 | htab_up types_htab; |
3019eac3 | 6531 | |
976ca316 SM |
6532 | create_debug_type_hash_table (per_objfile, NULL, &per_objfile->per_bfd->info, |
6533 | types_htab, rcuh_kind::COMPILE); | |
6534 | create_debug_types_hash_table (per_objfile, NULL, per_objfile->per_bfd->types, | |
6535 | types_htab); | |
3019eac3 DE |
6536 | if (types_htab == NULL) |
6537 | { | |
976ca316 | 6538 | per_objfile->per_bfd->signatured_types = NULL; |
3019eac3 DE |
6539 | return 0; |
6540 | } | |
6541 | ||
976ca316 | 6542 | per_objfile->per_bfd->signatured_types = std::move (types_htab); |
348e048f | 6543 | |
976ca316 SM |
6544 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
6545 | per_objfile->per_bfd->all_type_units.reserve | |
6546 | (htab_elements (per_objfile->per_bfd->signatured_types.get ())); | |
b2bdb8cf | 6547 | |
976ca316 | 6548 | htab_traverse_noresize (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6549 | add_signatured_type_cu_to_table, |
976ca316 | 6550 | &per_objfile->per_bfd->all_type_units); |
1fd400ff | 6551 | |
348e048f DE |
6552 | return 1; |
6553 | } | |
6554 | ||
5989a64e | 6555 | /* Add an entry for signature SIG to dwarf2_per_objfile->per_bfd->signatured_types. |
6aa5f3a6 DE |
6556 | If SLOT is non-NULL, it is the entry to use in the hash table. |
6557 | Otherwise we find one. */ | |
6558 | ||
6559 | static struct signatured_type * | |
976ca316 | 6560 | add_type_unit (dwarf2_per_objfile *per_objfile, ULONGEST sig, void **slot) |
6aa5f3a6 | 6561 | { |
976ca316 SM |
6562 | if (per_objfile->per_bfd->all_type_units.size () |
6563 | == per_objfile->per_bfd->all_type_units.capacity ()) | |
6564 | ++per_objfile->per_bfd->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6565 | |
976ca316 | 6566 | signatured_type *sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
b2bdb8cf | 6567 | |
976ca316 | 6568 | per_objfile->resize_symtabs (); |
af758d11 | 6569 | |
976ca316 | 6570 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
6aa5f3a6 DE |
6571 | sig_type->signature = sig; |
6572 | sig_type->per_cu.is_debug_types = 1; | |
976ca316 | 6573 | if (per_objfile->per_bfd->using_index) |
6aa5f3a6 DE |
6574 | { |
6575 | sig_type->per_cu.v.quick = | |
976ca316 | 6576 | OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
6aa5f3a6 DE |
6577 | struct dwarf2_per_cu_quick_data); |
6578 | } | |
6579 | ||
6580 | if (slot == NULL) | |
6581 | { | |
976ca316 | 6582 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 DE |
6583 | sig_type, INSERT); |
6584 | } | |
6585 | gdb_assert (*slot == NULL); | |
6586 | *slot = sig_type; | |
6587 | /* The rest of sig_type must be filled in by the caller. */ | |
6588 | return sig_type; | |
6589 | } | |
6590 | ||
a2ce51a0 DE |
6591 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6592 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6593 | ||
6594 | static void | |
976ca316 | 6595 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile *per_objfile, |
a2ce51a0 DE |
6596 | struct signatured_type *sig_entry, |
6597 | struct dwo_unit *dwo_entry) | |
6598 | { | |
976ca316 | 6599 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
1859c670 | 6600 | |
7ee85ab1 | 6601 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 | 6602 | gdb_assert (! sig_entry->per_cu.queued); |
976ca316 | 6603 | gdb_assert (per_objfile->get_cu (&sig_entry->per_cu) == NULL); |
1859c670 | 6604 | if (per_bfd->using_index) |
6aa5f3a6 DE |
6605 | { |
6606 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
976ca316 | 6607 | gdb_assert (!per_objfile->symtab_set_p (&sig_entry->per_cu)); |
6aa5f3a6 DE |
6608 | } |
6609 | else | |
6610 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6611 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6612 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6613 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6614 | gdb_assert (sig_entry->dwo_unit == NULL); |
6615 | ||
6616 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6617 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6618 | sig_entry->per_cu.length = dwo_entry->length; |
6619 | sig_entry->per_cu.reading_dwo_directly = 1; | |
1859c670 | 6620 | sig_entry->per_cu.per_bfd = per_bfd; |
a2ce51a0 DE |
6621 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6622 | sig_entry->dwo_unit = dwo_entry; | |
6623 | } | |
6624 | ||
6625 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6626 | If we haven't read the TU yet, create the signatured_type data structure |
6627 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6628 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6629 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6630 | containing that CU. Otherwise we could end up reading several other DWO | |
6631 | files (due to comdat folding) to process the transitive closure of all the | |
6632 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6633 | type signature that it needs. | |
a2ce51a0 DE |
6634 | We only do this for .gdb_index because in the psymtab case we already have |
6635 | to read all the DWOs to build the type unit groups. */ | |
6636 | ||
6637 | static struct signatured_type * | |
6638 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6639 | { | |
976ca316 | 6640 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a2ce51a0 DE |
6641 | struct dwo_file *dwo_file; |
6642 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6643 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6644 | void **slot; |
a2ce51a0 | 6645 | |
976ca316 | 6646 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 | 6647 | |
6aa5f3a6 DE |
6648 | /* If TU skeletons have been removed then we may not have read in any |
6649 | TUs yet. */ | |
976ca316 SM |
6650 | if (per_objfile->per_bfd->signatured_types == NULL) |
6651 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 DE |
6652 | |
6653 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6654 | Use the global signatured_types array to do our own comdat-folding |
6655 | of types. If this is the first time we're reading this TU, and | |
6656 | the TU has an entry in .gdb_index, replace the recorded data from | |
6657 | .gdb_index with this TU. */ | |
a2ce51a0 | 6658 | |
a2ce51a0 | 6659 | find_sig_entry.signature = sig; |
976ca316 | 6660 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6661 | &find_sig_entry, INSERT); |
9a3c8263 | 6662 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6663 | |
6664 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6665 | read. Don't reassign the global entry to point to this DWO if that's |
6666 | the case. Also note that if the TU is already being read, it may not | |
6667 | have come from a DWO, the program may be a mix of Fission-compiled | |
6668 | code and non-Fission-compiled code. */ | |
6669 | ||
6670 | /* Have we already tried to read this TU? | |
6671 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6672 | needn't exist in the global table yet). */ | |
6673 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6674 | return sig_entry; |
6675 | ||
6aa5f3a6 DE |
6676 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6677 | dwo_unit of the TU itself. */ | |
6678 | dwo_file = cu->dwo_unit->dwo_file; | |
6679 | ||
a2ce51a0 DE |
6680 | /* Ok, this is the first time we're reading this TU. */ |
6681 | if (dwo_file->tus == NULL) | |
6682 | return NULL; | |
6683 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6684 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6685 | &find_dwo_entry); | |
a2ce51a0 DE |
6686 | if (dwo_entry == NULL) |
6687 | return NULL; | |
6688 | ||
6aa5f3a6 DE |
6689 | /* If the global table doesn't have an entry for this TU, add one. */ |
6690 | if (sig_entry == NULL) | |
976ca316 | 6691 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6aa5f3a6 | 6692 | |
976ca316 | 6693 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6694 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6695 | return sig_entry; |
6696 | } | |
6697 | ||
a2ce51a0 DE |
6698 | /* Subroutine of lookup_signatured_type. |
6699 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6700 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6701 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6702 | |
6703 | static struct signatured_type * | |
6704 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6705 | { | |
976ca316 SM |
6706 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
6707 | struct dwp_file *dwp_file = get_dwp_file (per_objfile); | |
a2ce51a0 DE |
6708 | struct dwo_unit *dwo_entry; |
6709 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6710 | void **slot; |
a2ce51a0 | 6711 | |
976ca316 | 6712 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 DE |
6713 | gdb_assert (dwp_file != NULL); |
6714 | ||
6aa5f3a6 DE |
6715 | /* If TU skeletons have been removed then we may not have read in any |
6716 | TUs yet. */ | |
976ca316 SM |
6717 | if (per_objfile->per_bfd->signatured_types == NULL) |
6718 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 | 6719 | |
6aa5f3a6 | 6720 | find_sig_entry.signature = sig; |
976ca316 | 6721 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6722 | &find_sig_entry, INSERT); |
9a3c8263 | 6723 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6724 | |
6725 | /* Have we already tried to read this TU? | |
6726 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6727 | needn't exist in the global table yet). */ | |
6728 | if (sig_entry != NULL) | |
6729 | return sig_entry; | |
6730 | ||
a2ce51a0 DE |
6731 | if (dwp_file->tus == NULL) |
6732 | return NULL; | |
976ca316 SM |
6733 | dwo_entry = lookup_dwo_unit_in_dwp (per_objfile, dwp_file, NULL, sig, |
6734 | 1 /* is_debug_types */); | |
a2ce51a0 DE |
6735 | if (dwo_entry == NULL) |
6736 | return NULL; | |
6737 | ||
976ca316 SM |
6738 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6739 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6740 | |
a2ce51a0 DE |
6741 | return sig_entry; |
6742 | } | |
6743 | ||
380bca97 | 6744 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6745 | Returns NULL if signature SIG is not present in the table. |
6746 | It is up to the caller to complain about this. */ | |
348e048f DE |
6747 | |
6748 | static struct signatured_type * | |
a2ce51a0 | 6749 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6750 | { |
976ca316 | 6751 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 6752 | |
976ca316 | 6753 | if (cu->dwo_unit && per_objfile->per_bfd->using_index) |
a2ce51a0 DE |
6754 | { |
6755 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6756 | These cases require special processing. */ | |
976ca316 | 6757 | if (get_dwp_file (per_objfile) == NULL) |
a2ce51a0 DE |
6758 | return lookup_dwo_signatured_type (cu, sig); |
6759 | else | |
6760 | return lookup_dwp_signatured_type (cu, sig); | |
6761 | } | |
6762 | else | |
6763 | { | |
6764 | struct signatured_type find_entry, *entry; | |
348e048f | 6765 | |
976ca316 | 6766 | if (per_objfile->per_bfd->signatured_types == NULL) |
a2ce51a0 DE |
6767 | return NULL; |
6768 | find_entry.signature = sig; | |
9a3c8263 | 6769 | entry = ((struct signatured_type *) |
976ca316 | 6770 | htab_find (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6771 | &find_entry)); |
a2ce51a0 DE |
6772 | return entry; |
6773 | } | |
348e048f | 6774 | } |
18a8505e | 6775 | |
42e7ad6c | 6776 | /* Low level DIE reading support. */ |
348e048f | 6777 | |
d85a05f0 DJ |
6778 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6779 | ||
6780 | static void | |
6781 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6782 | struct dwarf2_cu *cu, |
3019eac3 | 6783 | struct dwarf2_section_info *section, |
685af9cd TT |
6784 | struct dwo_file *dwo_file, |
6785 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6786 | { |
fceca515 | 6787 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6788 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6789 | reader->cu = cu; |
3019eac3 | 6790 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6791 | reader->die_section = section; |
6792 | reader->buffer = section->buffer; | |
f664829e | 6793 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6794 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6795 | } |
6796 | ||
c0ab21c2 | 6797 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6798 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6799 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6800 | already. |
6801 | ||
6802 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6803 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6804 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6805 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6806 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6807 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6808 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6809 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6810 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6811 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6812 | kept around for at least as long as *RESULT_READER. | |
6813 | ||
b0c7bfa9 DE |
6814 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6815 | ||
6816 | static int | |
4ab09049 | 6817 | read_cutu_die_from_dwo (dwarf2_cu *cu, |
b0c7bfa9 | 6818 | struct dwo_unit *dwo_unit, |
b0c7bfa9 | 6819 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6820 | const char *stub_comp_dir, |
b0c7bfa9 | 6821 | struct die_reader_specs *result_reader, |
d521ce57 | 6822 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6823 | struct die_info **result_comp_unit_die, |
685af9cd | 6824 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6825 | { |
976ca316 | 6826 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
4ab09049 | 6827 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
976ca316 | 6828 | struct objfile *objfile = per_objfile->objfile; |
b0c7bfa9 | 6829 | bfd *abfd; |
d521ce57 | 6830 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6831 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6832 | int i,num_extra_attrs; | |
6833 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6834 | struct die_info *comp_unit_die; |
6835 | ||
b0aeadb3 DE |
6836 | /* At most one of these may be provided. */ |
6837 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6838 | |
b0c7bfa9 DE |
6839 | /* These attributes aren't processed until later: |
6840 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6841 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6842 | referenced later. However, these attributes are found in the stub | |
6843 | which we won't have later. In order to not impose this complication | |
6844 | on the rest of the code, we read them here and copy them to the | |
6845 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6846 | |
6847 | stmt_list = NULL; | |
6848 | low_pc = NULL; | |
6849 | high_pc = NULL; | |
6850 | ranges = NULL; | |
6851 | comp_dir = NULL; | |
6852 | ||
6853 | if (stub_comp_unit_die != NULL) | |
6854 | { | |
6855 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6856 | DWO file. */ | |
4ab09049 | 6857 | if (!per_cu->is_debug_types) |
b0c7bfa9 DE |
6858 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); |
6859 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6860 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6861 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6862 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6863 | ||
a39fdb41 | 6864 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6865 | |
18a8505e AT |
6866 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6867 | here (if needed). We need the value before we can process | |
6868 | DW_AT_ranges. */ | |
a39fdb41 | 6869 | cu->ranges_base = stub_comp_unit_die->ranges_base (); |
b0c7bfa9 | 6870 | } |
a2ce51a0 DE |
6871 | else if (stub_comp_dir != NULL) |
6872 | { | |
6873 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 6874 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6875 | comp_dir->name = DW_AT_comp_dir; |
6876 | comp_dir->form = DW_FORM_string; | |
6877 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
6878 | DW_STRING (comp_dir) = stub_comp_dir; | |
6879 | } | |
b0c7bfa9 DE |
6880 | |
6881 | /* Set up for reading the DWO CU/TU. */ | |
6882 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6883 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6884 | section->read (objfile); |
6885 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6886 | begin_info_ptr = info_ptr = (section->buffer |
6887 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6888 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 | 6889 | |
4ab09049 | 6890 | if (per_cu->is_debug_types) |
b0c7bfa9 | 6891 | { |
4ab09049 | 6892 | signatured_type *sig_type = (struct signatured_type *) per_cu; |
b0c7bfa9 | 6893 | |
976ca316 SM |
6894 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6895 | section, dwo_abbrev_section, | |
43988095 | 6896 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6897 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6898 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6899 | { |
6900 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6901 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6902 | hex_string (sig_type->signature), |
43988095 | 6903 | hex_string (cu->header.signature), |
9d8780f0 | 6904 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6905 | bfd_get_filename (abfd)); |
6906 | } | |
9c541725 | 6907 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6908 | /* For DWOs coming from DWP files, we don't know the CU length |
6909 | nor the type's offset in the TU until now. */ | |
4057dfde | 6910 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6911 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6912 | |
6913 | /* Establish the type offset that can be used to lookup the type. | |
6914 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6915 | sig_type->type_offset_in_section |
6916 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6917 | } |
6918 | else | |
6919 | { | |
976ca316 SM |
6920 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6921 | section, dwo_abbrev_section, | |
43988095 | 6922 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6923 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6924 | /* For DWOs coming from DWP files, we don't know the CU length |
6925 | until now. */ | |
4057dfde | 6926 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6927 | } |
6928 | ||
685af9cd | 6929 | *result_dwo_abbrev_table |
86de1d91 TT |
6930 | = abbrev_table::read (objfile, dwo_abbrev_section, |
6931 | cu->header.abbrev_sect_off); | |
685af9cd TT |
6932 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6933 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6934 | |
6935 | /* Read in the die, but leave space to copy over the attributes | |
6936 | from the stub. This has the benefit of simplifying the rest of | |
6937 | the code - all the work to maintain the illusion of a single | |
6938 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6939 | num_extra_attrs = ((stmt_list != NULL) | |
6940 | + (low_pc != NULL) | |
6941 | + (high_pc != NULL) | |
6942 | + (ranges != NULL) | |
6943 | + (comp_dir != NULL)); | |
6944 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6945 | num_extra_attrs); |
b0c7bfa9 DE |
6946 | |
6947 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6948 | comp_unit_die = *result_comp_unit_die; | |
6949 | i = comp_unit_die->num_attrs; | |
6950 | if (stmt_list != NULL) | |
6951 | comp_unit_die->attrs[i++] = *stmt_list; | |
6952 | if (low_pc != NULL) | |
6953 | comp_unit_die->attrs[i++] = *low_pc; | |
6954 | if (high_pc != NULL) | |
6955 | comp_unit_die->attrs[i++] = *high_pc; | |
6956 | if (ranges != NULL) | |
6957 | comp_unit_die->attrs[i++] = *ranges; | |
6958 | if (comp_dir != NULL) | |
6959 | comp_unit_die->attrs[i++] = *comp_dir; | |
6960 | comp_unit_die->num_attrs += num_extra_attrs; | |
6961 | ||
b4f54984 | 6962 | if (dwarf_die_debug) |
bf6af496 DE |
6963 | { |
6964 | fprintf_unfiltered (gdb_stdlog, | |
6965 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6966 | section->get_name (), |
bf6af496 DE |
6967 | (unsigned) (begin_info_ptr - section->buffer), |
6968 | bfd_get_filename (abfd)); | |
b4f54984 | 6969 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6970 | } |
6971 | ||
b0c7bfa9 DE |
6972 | /* Skip dummy compilation units. */ |
6973 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6974 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6975 | return 0; | |
6976 | ||
6977 | *result_info_ptr = info_ptr; | |
6978 | return 1; | |
6979 | } | |
6980 | ||
a084a2a6 AT |
6981 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
6982 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
6983 | signature is part of the header. */ | |
6984 | static gdb::optional<ULONGEST> | |
6985 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
6986 | { | |
6987 | if (cu->header.version >= 5) | |
6988 | return cu->header.signature; | |
6989 | struct attribute *attr; | |
6990 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
6991 | if (attr == nullptr) | |
6992 | return gdb::optional<ULONGEST> (); | |
6993 | return DW_UNSND (attr); | |
6994 | } | |
6995 | ||
c0ab21c2 | 6996 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6997 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 6998 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
6999 | |
7000 | static struct dwo_unit * | |
4ab09049 | 7001 | lookup_dwo_unit (dwarf2_cu *cu, die_info *comp_unit_die, const char *dwo_name) |
b0c7bfa9 | 7002 | { |
4ab09049 | 7003 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
b0c7bfa9 | 7004 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 7005 | const char *comp_dir; |
b0c7bfa9 | 7006 | |
a2ce51a0 DE |
7007 | gdb_assert (cu != NULL); |
7008 | ||
b0c7bfa9 | 7009 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 7010 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 7011 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 | 7012 | |
4ab09049 SM |
7013 | if (per_cu->is_debug_types) |
7014 | dwo_unit = lookup_dwo_type_unit (cu, dwo_name, comp_dir); | |
b0c7bfa9 DE |
7015 | else |
7016 | { | |
a084a2a6 | 7017 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
4ab09049 | 7018 | |
a084a2a6 | 7019 | if (!signature.has_value ()) |
b0c7bfa9 DE |
7020 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
7021 | " [in module %s]"), | |
4ab09049 SM |
7022 | dwo_name, bfd_get_filename (per_cu->per_bfd->obfd)); |
7023 | ||
7024 | dwo_unit = lookup_dwo_comp_unit (cu, dwo_name, comp_dir, *signature); | |
b0c7bfa9 DE |
7025 | } |
7026 | ||
b0c7bfa9 DE |
7027 | return dwo_unit; |
7028 | } | |
7029 | ||
c0ab21c2 | 7030 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 7031 | See it for a description of the parameters. |
fcd3b13d | 7032 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 7033 | |
c0ab21c2 | 7034 | void |
9e021579 SM |
7035 | cutu_reader::init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
7036 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 7037 | dwarf2_cu *existing_cu) |
a2ce51a0 | 7038 | { |
a2ce51a0 | 7039 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7040 | |
7041 | /* Verify we can do the following downcast, and that we have the | |
7042 | data we need. */ | |
7043 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7044 | sig_type = (struct signatured_type *) this_cu; | |
7045 | gdb_assert (sig_type->dwo_unit != NULL); | |
7046 | ||
2e671100 SM |
7047 | dwarf2_cu *cu; |
7048 | ||
7049 | if (existing_cu != nullptr) | |
6aa5f3a6 | 7050 | { |
2e671100 SM |
7051 | cu = existing_cu; |
7052 | gdb_assert (cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 7053 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 7054 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
7055 | } |
7056 | else | |
7057 | { | |
7188ed02 SM |
7058 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
7059 | in per_objfile yet. */ | |
7060 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); | |
9e021579 | 7061 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
2e671100 | 7062 | cu = m_new_cu.get (); |
6aa5f3a6 DE |
7063 | } |
7064 | ||
7065 | /* A future optimization, if needed, would be to use an existing | |
7066 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7067 | could share abbrev tables. */ | |
a2ce51a0 | 7068 | |
2e671100 | 7069 | if (read_cutu_die_from_dwo (cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7070 | NULL /* stub_comp_unit_die */, |
7071 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 7072 | this, &info_ptr, |
3e225074 | 7073 | &comp_unit_die, |
c0ab21c2 | 7074 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
7075 | { |
7076 | /* Dummy die. */ | |
c0ab21c2 | 7077 | dummy_p = true; |
a2ce51a0 | 7078 | } |
a2ce51a0 DE |
7079 | } |
7080 | ||
fd820528 | 7081 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7082 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7083 | |
f4dc4d17 DE |
7084 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7085 | Otherwise the table specified in the comp unit header is read in and used. | |
7086 | This is an optimization for when we already have the abbrev table. | |
7087 | ||
2e671100 SM |
7088 | If EXISTING_CU is non-NULL, then use it. Otherwise, a new CU is |
7089 | allocated. */ | |
aaa75496 | 7090 | |
ab432490 | 7091 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7092 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 | 7093 | struct abbrev_table *abbrev_table, |
2e671100 | 7094 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
7095 | bool skip_partial) |
7096 | : die_reader_specs {}, | |
6751ebae | 7097 | m_this_cu (this_cu) |
c906108c | 7098 | { |
976ca316 | 7099 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7100 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7101 | bfd *abfd = section->get_bfd_owner (); |
c0ab21c2 | 7102 | const gdb_byte *begin_info_ptr; |
dee91e82 | 7103 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7104 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7105 | /* Non-zero if CU currently points to a DWO file and we need to |
7106 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7107 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7108 | int rereading_dwo_cu = 0; |
c906108c | 7109 | |
b4f54984 | 7110 | if (dwarf_die_debug) |
9d8780f0 | 7111 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7112 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7113 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7114 | |
a2ce51a0 DE |
7115 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7116 | file (instead of going through the stub), short-circuit all of this. */ | |
7117 | if (this_cu->reading_dwo_directly) | |
7118 | { | |
7119 | /* Narrow down the scope of possibilities to have to understand. */ | |
7120 | gdb_assert (this_cu->is_debug_types); | |
7121 | gdb_assert (abbrev_table == NULL); | |
976ca316 | 7122 | init_tu_and_read_dwo_dies (this_cu, per_objfile, existing_cu); |
a2ce51a0 DE |
7123 | return; |
7124 | } | |
7125 | ||
dee91e82 | 7126 | /* This is cheap if the section is already read in. */ |
96b79293 | 7127 | section->read (objfile); |
dee91e82 | 7128 | |
9c541725 | 7129 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7130 | |
7131 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7132 | |
2e671100 SM |
7133 | dwarf2_cu *cu; |
7134 | ||
7135 | if (existing_cu != nullptr) | |
dee91e82 | 7136 | { |
2e671100 | 7137 | cu = existing_cu; |
42e7ad6c DE |
7138 | /* If this CU is from a DWO file we need to start over, we need to |
7139 | refetch the attributes from the skeleton CU. | |
7140 | This could be optimized by retrieving those attributes from when we | |
7141 | were here the first time: the previous comp_unit_die was stored in | |
7142 | comp_unit_obstack. But there's no data yet that we need this | |
7143 | optimization. */ | |
7144 | if (cu->dwo_unit != NULL) | |
7145 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7146 | } |
7147 | else | |
7148 | { | |
7188ed02 SM |
7149 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
7150 | in per_objfile yet. */ | |
976ca316 SM |
7151 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
7152 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); | |
c0ab21c2 | 7153 | cu = m_new_cu.get (); |
42e7ad6c | 7154 | } |
dee91e82 | 7155 | |
b0c7bfa9 | 7156 | /* Get the header. */ |
9c541725 | 7157 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7158 | { |
7159 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7160 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7161 | } |
7162 | else | |
7163 | { | |
3019eac3 | 7164 | if (this_cu->is_debug_types) |
dee91e82 | 7165 | { |
976ca316 SM |
7166 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7167 | section, abbrev_section, | |
7168 | info_ptr, rcuh_kind::TYPE); | |
dee91e82 | 7169 | |
42e7ad6c DE |
7170 | /* Since per_cu is the first member of struct signatured_type, |
7171 | we can go from a pointer to one to a pointer to the other. */ | |
7172 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7173 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7174 | gdb_assert (sig_type->type_offset_in_tu |
7175 | == cu->header.type_cu_offset_in_tu); | |
7176 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7177 | |
42e7ad6c DE |
7178 | /* LENGTH has not been set yet for type units if we're |
7179 | using .gdb_index. */ | |
4057dfde | 7180 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
7181 | |
7182 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7183 | sig_type->type_offset_in_section = |
7184 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7185 | |
7186 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7187 | } |
7188 | else | |
7189 | { | |
976ca316 SM |
7190 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7191 | section, abbrev_section, | |
43988095 JK |
7192 | info_ptr, |
7193 | rcuh_kind::COMPILE); | |
dee91e82 | 7194 | |
9c541725 | 7195 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
3ee6bb11 TV |
7196 | if (this_cu->length == 0) |
7197 | this_cu->length = cu->header.get_length (); | |
7198 | else | |
7199 | gdb_assert (this_cu->length == cu->header.get_length ()); | |
43988095 | 7200 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7201 | } |
7202 | } | |
10b3939b | 7203 | |
6caca83c | 7204 | /* Skip dummy compilation units. */ |
dee91e82 | 7205 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7206 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7207 | { |
7208 | dummy_p = true; | |
7209 | return; | |
7210 | } | |
6caca83c | 7211 | |
433df2d4 DE |
7212 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7213 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7214 | done. */ |
f4dc4d17 | 7215 | if (abbrev_table != NULL) |
685af9cd TT |
7216 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7217 | else | |
f4dc4d17 | 7218 | { |
c0ab21c2 | 7219 | m_abbrev_table_holder |
86de1d91 TT |
7220 | = abbrev_table::read (objfile, abbrev_section, |
7221 | cu->header.abbrev_sect_off); | |
c0ab21c2 | 7222 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7223 | } |
af703f96 | 7224 | |
dee91e82 | 7225 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 7226 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 7227 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 7228 | |
58f0c718 | 7229 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7230 | { |
7231 | dummy_p = true; | |
7232 | return; | |
7233 | } | |
58f0c718 | 7234 | |
b0c7bfa9 | 7235 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7236 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7237 | table from the DWO file and pass the ownership over to us. It will be | |
7238 | referenced from READER, so we must make sure to free it after we're done | |
7239 | with READER. | |
7240 | ||
b0c7bfa9 DE |
7241 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7242 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7243 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7244 | if (dwo_name != nullptr) |
3019eac3 | 7245 | { |
3019eac3 | 7246 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7247 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 7248 | |
3e225074 | 7249 | if (comp_unit_die->has_children) |
6a506a2d | 7250 | { |
b98664d3 | 7251 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7252 | " has children (offset %s) [in module %s]"), |
7253 | sect_offset_str (this_cu->sect_off), | |
7254 | bfd_get_filename (abfd)); | |
6a506a2d | 7255 | } |
4ab09049 | 7256 | dwo_unit = lookup_dwo_unit (cu, comp_unit_die, dwo_name); |
6a506a2d | 7257 | if (dwo_unit != NULL) |
3019eac3 | 7258 | { |
4ab09049 | 7259 | if (read_cutu_die_from_dwo (cu, dwo_unit, |
a2ce51a0 | 7260 | comp_unit_die, NULL, |
c0ab21c2 | 7261 | this, &info_ptr, |
3e225074 | 7262 | &dwo_comp_unit_die, |
c0ab21c2 | 7263 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7264 | { |
7265 | /* Dummy die. */ | |
c0ab21c2 | 7266 | dummy_p = true; |
6a506a2d DE |
7267 | return; |
7268 | } | |
7269 | comp_unit_die = dwo_comp_unit_die; | |
7270 | } | |
7271 | else | |
7272 | { | |
7273 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7274 | the stub. A complaint has already been logged. There's | |
7275 | not much more we can do except pass on the stub DIE to | |
7276 | die_reader_func. We don't want to throw an error on bad | |
7277 | debug info. */ | |
3019eac3 DE |
7278 | } |
7279 | } | |
c0ab21c2 | 7280 | } |
3019eac3 | 7281 | |
6751ebae TT |
7282 | void |
7283 | cutu_reader::keep () | |
c0ab21c2 | 7284 | { |
b0c7bfa9 | 7285 | /* Done, clean up. */ |
6751ebae TT |
7286 | gdb_assert (!dummy_p); |
7287 | if (m_new_cu != NULL) | |
348e048f | 7288 | { |
7188ed02 SM |
7289 | /* Save this dwarf2_cu in the per_objfile. The per_objfile owns it |
7290 | now. */ | |
7291 | dwarf2_per_objfile *per_objfile = m_new_cu->per_objfile; | |
7292 | per_objfile->set_cu (m_this_cu, m_new_cu.release ()); | |
348e048f | 7293 | } |
dee91e82 DE |
7294 | } |
7295 | ||
18a8505e AT |
7296 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7297 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7298 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7299 | |
7300 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7301 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7302 | |
7303 | We fill in THIS_CU->length. | |
7304 | ||
dee91e82 | 7305 | THIS_CU->cu is always freed when done. |
3019eac3 | 7306 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7307 | to care whether it refers to the "main" CU or the DWO CU. |
7308 | ||
7309 | When parent_cu is passed, it is used to provide a default value for | |
7310 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7311 | |
ab432490 | 7312 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7313 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
7314 | struct dwarf2_cu *parent_cu, |
7315 | struct dwo_file *dwo_file) | |
7316 | : die_reader_specs {}, | |
7317 | m_this_cu (this_cu) | |
dee91e82 | 7318 | { |
976ca316 | 7319 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7320 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7321 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7322 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7323 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7324 | |
b4f54984 | 7325 | if (dwarf_die_debug) |
9d8780f0 | 7326 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7327 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7328 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7329 | |
976ca316 | 7330 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
dee91e82 | 7331 | |
33e80786 DE |
7332 | abbrev_section = (dwo_file != NULL |
7333 | ? &dwo_file->sections.abbrev | |
7334 | : get_abbrev_section_for_cu (this_cu)); | |
7335 | ||
dee91e82 | 7336 | /* This is cheap if the section is already read in. */ |
96b79293 | 7337 | section->read (objfile); |
dee91e82 | 7338 | |
976ca316 | 7339 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
dee91e82 | 7340 | |
9c541725 | 7341 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
976ca316 SM |
7342 | info_ptr = read_and_check_comp_unit_head (per_objfile, &m_new_cu->header, |
7343 | section, abbrev_section, info_ptr, | |
43988095 JK |
7344 | (this_cu->is_debug_types |
7345 | ? rcuh_kind::TYPE | |
7346 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7347 | |
18a8505e AT |
7348 | if (parent_cu != nullptr) |
7349 | { | |
c0ab21c2 TT |
7350 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7351 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7352 | } |
4057dfde | 7353 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7354 | |
7355 | /* Skip dummy compilation units. */ | |
7356 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7357 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7358 | { |
7359 | dummy_p = true; | |
7360 | return; | |
7361 | } | |
72bf9492 | 7362 | |
c0ab21c2 | 7363 | m_abbrev_table_holder |
86de1d91 TT |
7364 | = abbrev_table::read (objfile, abbrev_section, |
7365 | m_new_cu->header.abbrev_sect_off); | |
dee91e82 | 7366 | |
c0ab21c2 TT |
7367 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7368 | m_abbrev_table_holder.get ()); | |
3e225074 | 7369 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7370 | } |
7371 | ||
0018ea6f DE |
7372 | \f |
7373 | /* Type Unit Groups. | |
dee91e82 | 7374 | |
0018ea6f DE |
7375 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7376 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7377 | so that all types coming from the same compilation (.o file) are grouped | |
7378 | together. A future step could be to put the types in the same symtab as | |
7379 | the CU the types ultimately came from. */ | |
ff013f42 | 7380 | |
f4dc4d17 DE |
7381 | static hashval_t |
7382 | hash_type_unit_group (const void *item) | |
7383 | { | |
9a3c8263 SM |
7384 | const struct type_unit_group *tu_group |
7385 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7386 | |
094b34ac | 7387 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7388 | } |
348e048f DE |
7389 | |
7390 | static int | |
f4dc4d17 | 7391 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7392 | { |
9a3c8263 SM |
7393 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7394 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7395 | |
094b34ac | 7396 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7397 | } |
348e048f | 7398 | |
f4dc4d17 DE |
7399 | /* Allocate a hash table for type unit groups. */ |
7400 | ||
eaa5fa8b | 7401 | static htab_up |
298e9637 | 7402 | allocate_type_unit_groups_table () |
f4dc4d17 | 7403 | { |
eaa5fa8b TT |
7404 | return htab_up (htab_create_alloc (3, |
7405 | hash_type_unit_group, | |
7406 | eq_type_unit_group, | |
7407 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7408 | } |
dee91e82 | 7409 | |
f4dc4d17 DE |
7410 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7411 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7412 | of any one psymtab grow too big. */ | |
7413 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7414 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7415 | |
094b34ac | 7416 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7417 | Create the type_unit_group object used to hold one or more TUs. */ |
7418 | ||
7419 | static struct type_unit_group * | |
094b34ac | 7420 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7421 | { |
976ca316 SM |
7422 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7423 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
094b34ac | 7424 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7425 | struct type_unit_group *tu_group; |
f4dc4d17 | 7426 | |
976ca316 | 7427 | tu_group = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, type_unit_group); |
094b34ac | 7428 | per_cu = &tu_group->per_cu; |
1859c670 | 7429 | per_cu->per_bfd = per_bfd; |
f4dc4d17 | 7430 | |
1859c670 | 7431 | if (per_bfd->using_index) |
094b34ac | 7432 | { |
1859c670 | 7433 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
094b34ac | 7434 | struct dwarf2_per_cu_quick_data); |
094b34ac DE |
7435 | } |
7436 | else | |
7437 | { | |
9c541725 | 7438 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7439 | dwarf2_psymtab *pst; |
528e1572 | 7440 | std::string name; |
094b34ac DE |
7441 | |
7442 | /* Give the symtab a useful name for debug purposes. */ | |
7443 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7444 | name = string_printf ("<type_units_%d>", |
7445 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7446 | else |
528e1572 | 7447 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7448 | |
976ca316 | 7449 | pst = create_partial_symtab (per_cu, per_objfile, name.c_str ()); |
6d94535f | 7450 | pst->anonymous = true; |
094b34ac | 7451 | } |
f4dc4d17 | 7452 | |
094b34ac | 7453 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7454 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7455 | |
7456 | return tu_group; | |
7457 | } | |
7458 | ||
094b34ac DE |
7459 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7460 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7461 | |
7462 | static struct type_unit_group * | |
ff39bb5e | 7463 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7464 | { |
976ca316 SM |
7465 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7466 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; | |
f4dc4d17 DE |
7467 | struct type_unit_group *tu_group; |
7468 | void **slot; | |
7469 | unsigned int line_offset; | |
7470 | struct type_unit_group type_unit_group_for_lookup; | |
7471 | ||
976ca316 SM |
7472 | if (per_objfile->per_bfd->type_unit_groups == NULL) |
7473 | per_objfile->per_bfd->type_unit_groups = allocate_type_unit_groups_table (); | |
f4dc4d17 DE |
7474 | |
7475 | /* Do we need to create a new group, or can we use an existing one? */ | |
7476 | ||
7477 | if (stmt_list) | |
7478 | { | |
7479 | line_offset = DW_UNSND (stmt_list); | |
7480 | ++tu_stats->nr_symtab_sharers; | |
7481 | } | |
7482 | else | |
7483 | { | |
7484 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7485 | We can do various things here like create one group per TU or | |
7486 | spread them over multiple groups to split up the expansion work. | |
7487 | To avoid worst case scenarios (too many groups or too large groups) | |
7488 | we, umm, group them in bunches. */ | |
7489 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7490 | | (tu_stats->nr_stmt_less_type_units | |
7491 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7492 | ++tu_stats->nr_stmt_less_type_units; | |
7493 | } | |
7494 | ||
094b34ac | 7495 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7496 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
976ca316 | 7497 | slot = htab_find_slot (per_objfile->per_bfd->type_unit_groups.get (), |
f4dc4d17 DE |
7498 | &type_unit_group_for_lookup, INSERT); |
7499 | if (*slot != NULL) | |
7500 | { | |
9a3c8263 | 7501 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7502 | gdb_assert (tu_group != NULL); |
7503 | } | |
7504 | else | |
7505 | { | |
9c541725 | 7506 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7507 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7508 | *slot = tu_group; |
7509 | ++tu_stats->nr_symtabs; | |
7510 | } | |
7511 | ||
7512 | return tu_group; | |
7513 | } | |
0018ea6f DE |
7514 | \f |
7515 | /* Partial symbol tables. */ | |
7516 | ||
7517 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7518 | ||
7519 | The caller must fill in the following details: | |
7520 | dirname, textlow, texthigh. */ | |
7521 | ||
891813be | 7522 | static dwarf2_psymtab * |
7aa104c4 SM |
7523 | create_partial_symtab (dwarf2_per_cu_data *per_cu, |
7524 | dwarf2_per_objfile *per_objfile, | |
7525 | const char *name) | |
0018ea6f | 7526 | { |
7aa104c4 | 7527 | struct objfile *objfile = per_objfile->objfile; |
891813be | 7528 | dwarf2_psymtab *pst; |
0018ea6f | 7529 | |
9f4e76a4 | 7530 | pst = new dwarf2_psymtab (name, objfile, per_cu); |
0018ea6f | 7531 | |
6d94535f | 7532 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7533 | |
7534 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7535 | per_cu->v.psymtab = pst; |
7536 | ||
7537 | return pst; | |
7538 | } | |
7539 | ||
c0ab21c2 | 7540 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7541 | |
7542 | static void | |
7543 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7544 | const gdb_byte *info_ptr, |
0018ea6f | 7545 | struct die_info *comp_unit_die, |
c0ab21c2 | 7546 | enum language pretend_language) |
0018ea6f DE |
7547 | { |
7548 | struct dwarf2_cu *cu = reader->cu; | |
7aa104c4 SM |
7549 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7550 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 7551 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7552 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7553 | CORE_ADDR baseaddr; |
7554 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7555 | dwarf2_psymtab *pst; |
3a2b436a | 7556 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7557 | const char *filename; |
0018ea6f | 7558 | |
0018ea6f DE |
7559 | gdb_assert (! per_cu->is_debug_types); |
7560 | ||
c0ab21c2 | 7561 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7562 | |
0018ea6f | 7563 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7564 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7565 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7566 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7567 | if (filename == NULL) | |
0018ea6f | 7568 | filename = ""; |
2e927613 TV |
7569 | else if (strcmp (filename, artificial) == 0) |
7570 | { | |
7571 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7572 | sect_offset_str (per_cu->sect_off), |
7573 | (char *) NULL)); | |
2e927613 TV |
7574 | filename = debug_filename.get (); |
7575 | } | |
0018ea6f | 7576 | |
7aa104c4 | 7577 | pst = create_partial_symtab (per_cu, per_objfile, filename); |
0018ea6f DE |
7578 | |
7579 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7580 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7581 | |
b3b3bada | 7582 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7583 | |
7584 | dwarf2_find_base_address (comp_unit_die, cu); | |
7585 | ||
7586 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7587 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7588 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7589 | &best_highpc, cu, pst); | |
7590 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7591 | { |
7592 | CORE_ADDR low | |
7593 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7594 | - baseaddr); | |
7595 | CORE_ADDR high | |
7596 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7597 | - baseaddr - 1); | |
7598 | /* Store the contiguous range if it is not empty; it can be | |
7599 | empty for CUs with no code. */ | |
d320c2b5 TT |
7600 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7601 | low, high, pst); | |
79748972 | 7602 | } |
0018ea6f DE |
7603 | |
7604 | /* Check if comp unit has_children. | |
7605 | If so, read the rest of the partial symbols from this comp unit. | |
7606 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7607 | if (comp_unit_die->has_children) |
0018ea6f DE |
7608 | { |
7609 | struct partial_die_info *first_die; | |
7610 | CORE_ADDR lowpc, highpc; | |
7611 | ||
7612 | lowpc = ((CORE_ADDR) -1); | |
7613 | highpc = ((CORE_ADDR) 0); | |
7614 | ||
7615 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7616 | ||
7617 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7618 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7619 | |
7620 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7621 | complaints from `maint check'. */ | |
7622 | if (lowpc == ((CORE_ADDR) -1)) | |
7623 | lowpc = highpc; | |
7624 | ||
7625 | /* If the compilation unit didn't have an explicit address range, | |
7626 | then use the information extracted from its child dies. */ | |
e385593e | 7627 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7628 | { |
7629 | best_lowpc = lowpc; | |
7630 | best_highpc = highpc; | |
7631 | } | |
7632 | } | |
4ae976d1 | 7633 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7634 | best_lowpc + baseaddr) |
7635 | - baseaddr); | |
4ae976d1 | 7636 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7637 | best_highpc + baseaddr) |
7638 | - baseaddr); | |
0018ea6f | 7639 | |
8763cede | 7640 | end_psymtab_common (objfile, pst); |
0018ea6f | 7641 | |
ae640021 | 7642 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7643 | { |
7644 | int i; | |
ae640021 | 7645 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7646 | |
7647 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7648 | post-pass. */ | |
7649 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7650 | pst->dependencies |
7651 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7652 | for (i = 0; i < len; ++i) |
7653 | { | |
7654 | pst->dependencies[i] | |
7655 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7656 | } | |
0018ea6f | 7657 | |
ae640021 | 7658 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7659 | } |
7660 | ||
7661 | /* Get the list of files included in the current compilation unit, | |
7662 | and build a psymtab for each of them. */ | |
7663 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7664 | ||
b4f54984 | 7665 | if (dwarf_read_debug) |
b926417a TT |
7666 | fprintf_unfiltered (gdb_stdlog, |
7667 | "Psymtab for %s unit @%s: %s - %s" | |
7668 | ", %d global, %d static syms\n", | |
7669 | per_cu->is_debug_types ? "type" : "comp", | |
7670 | sect_offset_str (per_cu->sect_off), | |
7671 | paddress (gdbarch, pst->text_low (objfile)), | |
7672 | paddress (gdbarch, pst->text_high (objfile)), | |
7673 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
7674 | } |
7675 | ||
7676 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7677 | Process compilation unit THIS_CU for a psymtab. */ | |
7678 | ||
7679 | static void | |
ab432490 SM |
7680 | process_psymtab_comp_unit (dwarf2_per_cu_data *this_cu, |
7681 | dwarf2_per_objfile *per_objfile, | |
135f5437 | 7682 | bool want_partial_unit, |
b93601f3 | 7683 | enum language pretend_language) |
0018ea6f DE |
7684 | { |
7685 | /* If this compilation unit was already read in, free the | |
7686 | cached copy in order to read it in again. This is | |
7687 | necessary because we skipped some symbols when we first | |
7688 | read in the compilation unit (see load_partial_dies). | |
7689 | This problem could be avoided, but the benefit is unclear. */ | |
7188ed02 | 7690 | per_objfile->remove_cu (this_cu); |
0018ea6f | 7691 | |
2e671100 | 7692 | cutu_reader reader (this_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 | 7693 | |
58990295 TV |
7694 | switch (reader.comp_unit_die->tag) |
7695 | { | |
7696 | case DW_TAG_compile_unit: | |
7697 | this_cu->unit_type = DW_UT_compile; | |
7698 | break; | |
7699 | case DW_TAG_partial_unit: | |
7700 | this_cu->unit_type = DW_UT_partial; | |
7701 | break; | |
7702 | default: | |
7703 | abort (); | |
7704 | } | |
7705 | ||
c0ab21c2 | 7706 | if (reader.dummy_p) |
f1902523 | 7707 | { |
c0ab21c2 | 7708 | /* Nothing. */ |
f1902523 | 7709 | } |
c0ab21c2 | 7710 | else if (this_cu->is_debug_types) |
3e225074 TT |
7711 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7712 | reader.comp_unit_die); | |
135f5437 TT |
7713 | else if (want_partial_unit |
7714 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7715 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7716 | reader.comp_unit_die, | |
c0ab21c2 | 7717 | pretend_language); |
0018ea6f | 7718 | |
7188ed02 | 7719 | this_cu->lang = reader.cu->language; |
58990295 | 7720 | |
0018ea6f | 7721 | /* Age out any secondary CUs. */ |
7188ed02 | 7722 | per_objfile->age_comp_units (); |
0018ea6f | 7723 | } |
f4dc4d17 DE |
7724 | |
7725 | /* Reader function for build_type_psymtabs. */ | |
7726 | ||
7727 | static void | |
7728 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7729 | const gdb_byte *info_ptr, |
3e225074 | 7730 | struct die_info *type_unit_die) |
f4dc4d17 | 7731 | { |
976ca316 SM |
7732 | dwarf2_per_objfile *per_objfile = reader->cu->per_objfile; |
7733 | struct objfile *objfile = per_objfile->objfile; | |
f4dc4d17 DE |
7734 | struct dwarf2_cu *cu = reader->cu; |
7735 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7736 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7737 | struct type_unit_group *tu_group; |
7738 | struct attribute *attr; | |
7739 | struct partial_die_info *first_die; | |
7740 | CORE_ADDR lowpc, highpc; | |
891813be | 7741 | dwarf2_psymtab *pst; |
f4dc4d17 | 7742 | |
0186c6a7 DE |
7743 | gdb_assert (per_cu->is_debug_types); |
7744 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7745 | |
3e225074 | 7746 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7747 | return; |
7748 | ||
052c8bb8 | 7749 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7750 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7751 | |
df07e2c7 | 7752 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7753 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7754 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7755 | |
7756 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
976ca316 | 7757 | pst = create_partial_symtab (per_cu, per_objfile, ""); |
6d94535f | 7758 | pst->anonymous = true; |
f4dc4d17 DE |
7759 | |
7760 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7761 | ||
7762 | lowpc = (CORE_ADDR) -1; | |
7763 | highpc = (CORE_ADDR) 0; | |
7764 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7765 | ||
8763cede | 7766 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
7767 | } |
7768 | ||
73051182 DE |
7769 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7770 | ||
7771 | struct tu_abbrev_offset | |
7772 | { | |
b2bdb8cf SM |
7773 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7774 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7775 | {} | |
7776 | ||
7777 | signatured_type *sig_type; | |
73051182 DE |
7778 | sect_offset abbrev_offset; |
7779 | }; | |
7780 | ||
484cf504 | 7781 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7782 | |
484cf504 TT |
7783 | static bool |
7784 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7785 | const struct tu_abbrev_offset &b) | |
73051182 | 7786 | { |
484cf504 | 7787 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7788 | } |
7789 | ||
7790 | /* Efficiently read all the type units. | |
7791 | This does the bulk of the work for build_type_psymtabs. | |
7792 | ||
7793 | The efficiency is because we sort TUs by the abbrev table they use and | |
7794 | only read each abbrev table once. In one program there are 200K TUs | |
7795 | sharing 8K abbrev tables. | |
7796 | ||
7797 | The main purpose of this function is to support building the | |
5989a64e | 7798 | dwarf2_per_objfile->per_bfd->type_unit_groups table. |
73051182 DE |
7799 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we |
7800 | can collapse the search space by grouping them by stmt_list. | |
7801 | The savings can be significant, in the same program from above the 200K TUs | |
7802 | share 8K stmt_list tables. | |
7803 | ||
7804 | FUNC is expected to call get_type_unit_group, which will create the | |
7805 | struct type_unit_group if necessary and add it to | |
5989a64e | 7806 | dwarf2_per_objfile->per_bfd->type_unit_groups. */ |
73051182 DE |
7807 | |
7808 | static void | |
976ca316 | 7809 | build_type_psymtabs_1 (dwarf2_per_objfile *per_objfile) |
73051182 | 7810 | { |
976ca316 | 7811 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
685af9cd | 7812 | abbrev_table_up abbrev_table; |
73051182 | 7813 | sect_offset abbrev_offset; |
73051182 DE |
7814 | |
7815 | /* It's up to the caller to not call us multiple times. */ | |
976ca316 | 7816 | gdb_assert (per_objfile->per_bfd->type_unit_groups == NULL); |
73051182 | 7817 | |
976ca316 | 7818 | if (per_objfile->per_bfd->all_type_units.empty ()) |
73051182 DE |
7819 | return; |
7820 | ||
7821 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7822 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7823 | read each abbrev table in. | |
7824 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7825 | This is simpler and efficient enough for now. | |
7826 | ||
7827 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7828 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7829 | stmt_list value too so in practice this should work well. | |
7830 | ||
7831 | The basic algorithm here is: | |
7832 | ||
7833 | sort TUs by abbrev table | |
7834 | for each TU with same abbrev table: | |
7835 | read abbrev table if first user | |
7836 | read TU top level DIE | |
7837 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7838 | call FUNC */ | |
7839 | ||
b4f54984 | 7840 | if (dwarf_read_debug) |
73051182 DE |
7841 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
7842 | ||
7843 | /* Sort in a separate table to maintain the order of all_type_units | |
7844 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf | 7845 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
976ca316 | 7846 | sorted_by_abbrev.reserve (per_objfile->per_bfd->all_type_units.size ()); |
b2bdb8cf | 7847 | |
976ca316 | 7848 | for (signatured_type *sig_type : per_objfile->per_bfd->all_type_units) |
b2bdb8cf | 7849 | sorted_by_abbrev.emplace_back |
976ca316 | 7850 | (sig_type, read_abbrev_offset (per_objfile, sig_type->per_cu.section, |
b2bdb8cf | 7851 | sig_type->per_cu.sect_off)); |
73051182 | 7852 | |
484cf504 TT |
7853 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7854 | sort_tu_by_abbrev_offset); | |
73051182 | 7855 | |
9c541725 | 7856 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7857 | |
b2bdb8cf | 7858 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7859 | { |
73051182 DE |
7860 | /* Switch to the next abbrev table if necessary. */ |
7861 | if (abbrev_table == NULL | |
b2bdb8cf | 7862 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7863 | { |
b2bdb8cf | 7864 | abbrev_offset = tu.abbrev_offset; |
73051182 | 7865 | abbrev_table = |
976ca316 SM |
7866 | abbrev_table::read (per_objfile->objfile, |
7867 | &per_objfile->per_bfd->abbrev, abbrev_offset); | |
73051182 DE |
7868 | ++tu_stats->nr_uniq_abbrev_tables; |
7869 | } | |
7870 | ||
976ca316 | 7871 | cutu_reader reader (&tu.sig_type->per_cu, per_objfile, |
2e671100 | 7872 | abbrev_table.get (), nullptr, false); |
c0ab21c2 TT |
7873 | if (!reader.dummy_p) |
7874 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7875 | reader.comp_unit_die); |
73051182 | 7876 | } |
6aa5f3a6 | 7877 | } |
73051182 | 7878 | |
6aa5f3a6 DE |
7879 | /* Print collected type unit statistics. */ |
7880 | ||
7881 | static void | |
976ca316 | 7882 | print_tu_stats (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 | 7883 | { |
976ca316 | 7884 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
6aa5f3a6 DE |
7885 | |
7886 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf | 7887 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
976ca316 | 7888 | per_objfile->per_bfd->all_type_units.size ()); |
6aa5f3a6 DE |
7889 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
7890 | tu_stats->nr_uniq_abbrev_tables); | |
7891 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
7892 | tu_stats->nr_symtabs); | |
7893 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
7894 | tu_stats->nr_symtab_sharers); | |
7895 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
7896 | tu_stats->nr_stmt_less_type_units); | |
7897 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
7898 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7899 | } |
7900 | ||
f4dc4d17 DE |
7901 | /* Traversal function for build_type_psymtabs. */ |
7902 | ||
7903 | static int | |
7904 | build_type_psymtab_dependencies (void **slot, void *info) | |
7905 | { | |
976ca316 SM |
7906 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
7907 | struct objfile *objfile = per_objfile->objfile; | |
f4dc4d17 | 7908 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; |
094b34ac | 7909 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 7910 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 7911 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7912 | int i; |
7913 | ||
7914 | gdb_assert (len > 0); | |
197400e8 | 7915 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
7916 | |
7917 | pst->number_of_dependencies = len; | |
a9342b62 | 7918 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7919 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7920 | { |
df07e2c7 | 7921 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
7922 | gdb_assert (iter->per_cu.is_debug_types); |
7923 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 7924 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7925 | } |
7926 | ||
df07e2c7 AB |
7927 | delete tu_group->tus; |
7928 | tu_group->tus = nullptr; | |
348e048f DE |
7929 | |
7930 | return 1; | |
7931 | } | |
7932 | ||
7933 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7934 | Build partial symbol tables for the .debug_types comp-units. */ | |
7935 | ||
7936 | static void | |
976ca316 | 7937 | build_type_psymtabs (dwarf2_per_objfile *per_objfile) |
348e048f | 7938 | { |
976ca316 | 7939 | if (! create_all_type_units (per_objfile)) |
348e048f DE |
7940 | return; |
7941 | ||
976ca316 | 7942 | build_type_psymtabs_1 (per_objfile); |
6aa5f3a6 | 7943 | } |
f4dc4d17 | 7944 | |
6aa5f3a6 DE |
7945 | /* Traversal function for process_skeletonless_type_unit. |
7946 | Read a TU in a DWO file and build partial symbols for it. */ | |
7947 | ||
7948 | static int | |
7949 | process_skeletonless_type_unit (void **slot, void *info) | |
7950 | { | |
7951 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
976ca316 | 7952 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
6aa5f3a6 DE |
7953 | struct signatured_type find_entry, *entry; |
7954 | ||
7955 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7956 | ||
976ca316 SM |
7957 | if (per_objfile->per_bfd->signatured_types == NULL) |
7958 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
6aa5f3a6 DE |
7959 | |
7960 | find_entry.signature = dwo_unit->signature; | |
976ca316 | 7961 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 7962 | &find_entry, INSERT); |
6aa5f3a6 DE |
7963 | /* If we've already seen this type there's nothing to do. What's happening |
7964 | is we're doing our own version of comdat-folding here. */ | |
7965 | if (*slot != NULL) | |
7966 | return 1; | |
7967 | ||
7968 | /* This does the job that create_all_type_units would have done for | |
7969 | this TU. */ | |
976ca316 SM |
7970 | entry = add_type_unit (per_objfile, dwo_unit->signature, slot); |
7971 | fill_in_sig_entry_from_dwo_entry (per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7972 | *slot = entry; |
7973 | ||
7974 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
976ca316 | 7975 | cutu_reader reader (&entry->per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
7976 | if (!reader.dummy_p) |
7977 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7978 | reader.comp_unit_die); |
6aa5f3a6 DE |
7979 | |
7980 | return 1; | |
7981 | } | |
7982 | ||
7983 | /* Traversal function for process_skeletonless_type_units. */ | |
7984 | ||
7985 | static int | |
7986 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
7987 | { | |
7988 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7989 | ||
7990 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
7991 | htab_traverse_noresize (dwo_file->tus.get (), |
7992 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
7993 | |
7994 | return 1; | |
7995 | } | |
7996 | ||
7997 | /* Scan all TUs of DWO files, verifying we've processed them. | |
7998 | This is needed in case a TU was emitted without its skeleton. | |
7999 | Note: This can't be done until we know what all the DWO files are. */ | |
8000 | ||
8001 | static void | |
976ca316 | 8002 | process_skeletonless_type_units (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 DE |
8003 | { |
8004 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
976ca316 SM |
8005 | if (get_dwp_file (per_objfile) == NULL |
8006 | && per_objfile->per_bfd->dwo_files != NULL) | |
6aa5f3a6 | 8007 | { |
976ca316 | 8008 | htab_traverse_noresize (per_objfile->per_bfd->dwo_files.get (), |
6aa5f3a6 | 8009 | process_dwo_file_for_skeletonless_type_units, |
976ca316 | 8010 | per_objfile); |
6aa5f3a6 | 8011 | } |
348e048f DE |
8012 | } |
8013 | ||
ed2dc618 | 8014 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8015 | |
8016 | static void | |
976ca316 | 8017 | set_partial_user (dwarf2_per_objfile *per_objfile) |
95554aad | 8018 | { |
976ca316 | 8019 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
95554aad | 8020 | { |
891813be | 8021 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 8022 | |
36586728 TT |
8023 | if (pst == NULL) |
8024 | continue; | |
8025 | ||
b76e467d | 8026 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8027 | { |
8028 | /* Set the 'user' field only if it is not already set. */ | |
8029 | if (pst->dependencies[j]->user == NULL) | |
8030 | pst->dependencies[j]->user = pst; | |
8031 | } | |
8032 | } | |
8033 | } | |
8034 | ||
93311388 DE |
8035 | /* Build the partial symbol table by doing a quick pass through the |
8036 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8037 | |
93311388 | 8038 | static void |
976ca316 | 8039 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile) |
93311388 | 8040 | { |
976ca316 | 8041 | struct objfile *objfile = per_objfile->objfile; |
93311388 | 8042 | |
b4f54984 | 8043 | if (dwarf_read_debug) |
45cfd468 DE |
8044 | { |
8045 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8046 | objfile_name (objfile)); |
45cfd468 DE |
8047 | } |
8048 | ||
76935768 | 8049 | scoped_restore restore_reading_psyms |
976ca316 | 8050 | = make_scoped_restore (&per_objfile->per_bfd->reading_partial_symbols, |
76935768 | 8051 | true); |
98bfdba5 | 8052 | |
976ca316 | 8053 | per_objfile->per_bfd->info.read (objfile); |
91c24f0a | 8054 | |
93311388 DE |
8055 | /* Any cached compilation units will be linked by the per-objfile |
8056 | read_in_chain. Make sure to free them when we're done. */ | |
976ca316 | 8057 | free_cached_comp_units freer (per_objfile); |
72bf9492 | 8058 | |
976ca316 | 8059 | build_type_psymtabs (per_objfile); |
348e048f | 8060 | |
976ca316 | 8061 | create_all_comp_units (per_objfile); |
c906108c | 8062 | |
60606b2c TT |
8063 | /* Create a temporary address map on a temporary obstack. We later |
8064 | copy this to the final obstack. */ | |
8268c778 | 8065 | auto_obstack temp_obstack; |
791afaa2 TT |
8066 | |
8067 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 8068 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 8069 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 8070 | |
976ca316 | 8071 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3d5afab3 TV |
8072 | { |
8073 | if (per_cu->v.psymtab != NULL) | |
8074 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
8075 | continue; | |
976ca316 | 8076 | process_psymtab_comp_unit (per_cu, per_objfile, false, |
ab432490 | 8077 | language_minimal); |
3d5afab3 | 8078 | } |
ff013f42 | 8079 | |
6aa5f3a6 | 8080 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
976ca316 | 8081 | process_skeletonless_type_units (per_objfile); |
6aa5f3a6 DE |
8082 | |
8083 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
976ca316 | 8084 | if (per_objfile->per_bfd->type_unit_groups != NULL) |
6aa5f3a6 | 8085 | { |
976ca316 SM |
8086 | htab_traverse_noresize (per_objfile->per_bfd->type_unit_groups.get (), |
8087 | build_type_psymtab_dependencies, per_objfile); | |
6aa5f3a6 DE |
8088 | } |
8089 | ||
b4f54984 | 8090 | if (dwarf_read_debug) |
976ca316 | 8091 | print_tu_stats (per_objfile); |
6aa5f3a6 | 8092 | |
976ca316 | 8093 | set_partial_user (per_objfile); |
95554aad | 8094 | |
d320c2b5 TT |
8095 | objfile->partial_symtabs->psymtabs_addrmap |
8096 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 8097 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
8098 | /* At this point we want to keep the address map. */ |
8099 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8100 | |
b4f54984 | 8101 | if (dwarf_read_debug) |
45cfd468 | 8102 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8103 | objfile_name (objfile)); |
ae038cb0 DJ |
8104 | } |
8105 | ||
dee91e82 DE |
8106 | /* Load the partial DIEs for a secondary CU into memory. |
8107 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8108 | |
dee91e82 | 8109 | static void |
ab432490 | 8110 | load_partial_comp_unit (dwarf2_per_cu_data *this_cu, |
2e671100 SM |
8111 | dwarf2_per_objfile *per_objfile, |
8112 | dwarf2_cu *existing_cu) | |
dee91e82 | 8113 | { |
2e671100 | 8114 | cutu_reader reader (this_cu, per_objfile, nullptr, existing_cu, false); |
c0ab21c2 TT |
8115 | |
8116 | if (!reader.dummy_p) | |
8117 | { | |
8118 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
8119 | language_minimal); | |
8120 | ||
8121 | /* Check if comp unit has_children. | |
8122 | If so, read the rest of the partial symbols from this comp unit. | |
8123 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 8124 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 8125 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
8126 | |
8127 | reader.keep (); | |
c0ab21c2 | 8128 | } |
ae038cb0 DJ |
8129 | } |
8130 | ||
ae038cb0 | 8131 | static void |
976ca316 | 8132 | read_comp_units_from_section (dwarf2_per_objfile *per_objfile, |
36586728 | 8133 | struct dwarf2_section_info *section, |
f1902523 | 8134 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8135 | unsigned int is_dwz) |
ae038cb0 | 8136 | { |
d521ce57 | 8137 | const gdb_byte *info_ptr; |
976ca316 | 8138 | struct objfile *objfile = per_objfile->objfile; |
be391dca | 8139 | |
b4f54984 | 8140 | if (dwarf_read_debug) |
bf6af496 | 8141 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
96b79293 TT |
8142 | section->get_name (), |
8143 | section->get_file_name ()); | |
bf6af496 | 8144 | |
96b79293 | 8145 | section->read (objfile); |
ae038cb0 | 8146 | |
36586728 | 8147 | info_ptr = section->buffer; |
6e70227d | 8148 | |
36586728 | 8149 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8150 | { |
ae038cb0 | 8151 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8152 | |
9c541725 | 8153 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8154 | |
f1902523 | 8155 | comp_unit_head cu_header; |
976ca316 | 8156 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 SM |
8157 | abbrev_section, info_ptr, |
8158 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8159 | |
8160 | /* Save the compilation unit for later lookup. */ | |
f1902523 | 8161 | if (cu_header.unit_type != DW_UT_type) |
976ca316 | 8162 | this_cu = per_objfile->per_bfd->allocate_per_cu (); |
f1902523 JK |
8163 | else |
8164 | { | |
976ca316 | 8165 | auto sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
f1902523 JK |
8166 | sig_type->signature = cu_header.signature; |
8167 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8168 | this_cu = &sig_type->per_cu; | |
8169 | } | |
8170 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8171 | this_cu->sect_off = sect_off; |
f1902523 | 8172 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8173 | this_cu->is_dwz = is_dwz; |
8a0459fd | 8174 | this_cu->section = section; |
ae038cb0 | 8175 | |
976ca316 | 8176 | per_objfile->per_bfd->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8177 | |
8178 | info_ptr = info_ptr + this_cu->length; | |
8179 | } | |
36586728 TT |
8180 | } |
8181 | ||
8182 | /* Create a list of all compilation units in OBJFILE. | |
8183 | This is only done for -readnow and building partial symtabs. */ | |
8184 | ||
8185 | static void | |
976ca316 | 8186 | create_all_comp_units (dwarf2_per_objfile *per_objfile) |
36586728 | 8187 | { |
976ca316 SM |
8188 | gdb_assert (per_objfile->per_bfd->all_comp_units.empty ()); |
8189 | read_comp_units_from_section (per_objfile, &per_objfile->per_bfd->info, | |
8190 | &per_objfile->per_bfd->abbrev, 0); | |
36586728 | 8191 | |
976ca316 | 8192 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
4db1a1dc | 8193 | if (dwz != NULL) |
976ca316 | 8194 | read_comp_units_from_section (per_objfile, &dwz->info, &dwz->abbrev, 1); |
c906108c SS |
8195 | } |
8196 | ||
5734ee8b | 8197 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8198 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8199 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8200 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8201 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8202 | |
72bf9492 DJ |
8203 | static void |
8204 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8205 | CORE_ADDR *highpc, int set_addrmap, |
8206 | struct dwarf2_cu *cu) | |
c906108c | 8207 | { |
72bf9492 | 8208 | struct partial_die_info *pdi; |
c906108c | 8209 | |
91c24f0a DC |
8210 | /* Now, march along the PDI's, descending into ones which have |
8211 | interesting children but skipping the children of the other ones, | |
8212 | until we reach the end of the compilation unit. */ | |
c906108c | 8213 | |
72bf9492 | 8214 | pdi = first_die; |
91c24f0a | 8215 | |
72bf9492 DJ |
8216 | while (pdi != NULL) |
8217 | { | |
52356b79 | 8218 | pdi->fixup (cu); |
c906108c | 8219 | |
f55ee35c | 8220 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8221 | children, so we need to look at them. Ditto for anonymous |
8222 | enums. */ | |
933c6fe4 | 8223 | |
7d00ffec | 8224 | if (pdi->raw_name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8225 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8226 | || pdi->tag == DW_TAG_imported_unit |
8227 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8228 | { |
72bf9492 | 8229 | switch (pdi->tag) |
c906108c SS |
8230 | { |
8231 | case DW_TAG_subprogram: | |
b1dc1806 | 8232 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8233 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
f9b5d5ea TV |
8234 | if (cu->language == language_cplus) |
8235 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
8236 | set_addrmap, cu); | |
c906108c | 8237 | break; |
72929c62 | 8238 | case DW_TAG_constant: |
c906108c SS |
8239 | case DW_TAG_variable: |
8240 | case DW_TAG_typedef: | |
91c24f0a | 8241 | case DW_TAG_union_type: |
317d2668 TV |
8242 | if (!pdi->is_declaration |
8243 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 8244 | { |
72bf9492 | 8245 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8246 | } |
8247 | break; | |
c906108c | 8248 | case DW_TAG_class_type: |
680b30c7 | 8249 | case DW_TAG_interface_type: |
c906108c | 8250 | case DW_TAG_structure_type: |
72bf9492 | 8251 | if (!pdi->is_declaration) |
c906108c | 8252 | { |
72bf9492 | 8253 | add_partial_symbol (pdi, cu); |
c906108c | 8254 | } |
b7fee5a3 KS |
8255 | if ((cu->language == language_rust |
8256 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8257 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8258 | set_addrmap, cu); | |
c906108c | 8259 | break; |
91c24f0a | 8260 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8261 | if (!pdi->is_declaration) |
8262 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8263 | break; |
8264 | case DW_TAG_base_type: | |
a02abb62 | 8265 | case DW_TAG_subrange_type: |
c906108c | 8266 | /* File scope base type definitions are added to the partial |
c5aa993b | 8267 | symbol table. */ |
72bf9492 | 8268 | add_partial_symbol (pdi, cu); |
c906108c | 8269 | break; |
d9fa45fe | 8270 | case DW_TAG_namespace: |
cdc07690 | 8271 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8272 | break; |
5d7cb8df | 8273 | case DW_TAG_module: |
59c35742 AB |
8274 | if (!pdi->is_declaration) |
8275 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8276 | break; |
95554aad TT |
8277 | case DW_TAG_imported_unit: |
8278 | { | |
8279 | struct dwarf2_per_cu_data *per_cu; | |
8280 | ||
f4dc4d17 DE |
8281 | /* For now we don't handle imported units in type units. */ |
8282 | if (cu->per_cu->is_debug_types) | |
8283 | { | |
8284 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8285 | " supported in type units [in module %s]"), | |
5e22e966 | 8286 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
8287 | } |
8288 | ||
e3b94546 | 8289 | per_cu = dwarf2_find_containing_comp_unit |
5e22e966 | 8290 | (pdi->d.sect_off, pdi->is_dwz, cu->per_objfile); |
95554aad TT |
8291 | |
8292 | /* Go read the partial unit, if needed. */ | |
8293 | if (per_cu->v.psymtab == NULL) | |
ab432490 SM |
8294 | process_psymtab_comp_unit (per_cu, cu->per_objfile, true, |
8295 | cu->language); | |
95554aad | 8296 | |
ae640021 | 8297 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8298 | } |
8299 | break; | |
74921315 KS |
8300 | case DW_TAG_imported_declaration: |
8301 | add_partial_symbol (pdi, cu); | |
8302 | break; | |
c906108c SS |
8303 | default: |
8304 | break; | |
8305 | } | |
8306 | } | |
8307 | ||
72bf9492 DJ |
8308 | /* If the die has a sibling, skip to the sibling. */ |
8309 | ||
8310 | pdi = pdi->die_sibling; | |
8311 | } | |
8312 | } | |
8313 | ||
8314 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8315 | |
72bf9492 | 8316 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8317 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8318 | Enumerators are an exception; they use the scope of their parent |
8319 | enumeration type, i.e. the name of the enumeration type is not | |
8320 | prepended to the enumerator. | |
91c24f0a | 8321 | |
72bf9492 DJ |
8322 | There are two complexities. One is DW_AT_specification; in this |
8323 | case "parent" means the parent of the target of the specification, | |
8324 | instead of the direct parent of the DIE. The other is compilers | |
8325 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8326 | the fully qualified name of structure types from their members' | |
8327 | linkage names. This must be done using the DIE's children rather | |
8328 | than the children of any DW_AT_specification target. We only need | |
8329 | to do this for structures at the top level, i.e. if the target of | |
8330 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8331 | have a parent. */ | |
8332 | ||
8333 | /* Compute the scope prefix associated with PDI's parent, in | |
8334 | compilation unit CU. The result will be allocated on CU's | |
8335 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8336 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8337 | static const char * |
72bf9492 DJ |
8338 | partial_die_parent_scope (struct partial_die_info *pdi, |
8339 | struct dwarf2_cu *cu) | |
8340 | { | |
15d034d0 | 8341 | const char *grandparent_scope; |
72bf9492 | 8342 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8343 | |
72bf9492 DJ |
8344 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8345 | then this means the parent of the specification DIE. */ | |
8346 | ||
8347 | real_pdi = pdi; | |
72bf9492 | 8348 | while (real_pdi->has_specification) |
fb816e8b | 8349 | { |
122cf0f2 AB |
8350 | auto res = find_partial_die (real_pdi->spec_offset, |
8351 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8352 | real_pdi = res.pdi; |
8353 | cu = res.cu; | |
8354 | } | |
72bf9492 DJ |
8355 | |
8356 | parent = real_pdi->die_parent; | |
8357 | if (parent == NULL) | |
8358 | return NULL; | |
8359 | ||
8360 | if (parent->scope_set) | |
8361 | return parent->scope; | |
8362 | ||
52356b79 | 8363 | parent->fixup (cu); |
72bf9492 | 8364 | |
10b3939b | 8365 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8366 | |
acebe513 UW |
8367 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8368 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8369 | Work around this problem here. */ | |
8370 | if (cu->language == language_cplus | |
6e70227d | 8371 | && parent->tag == DW_TAG_namespace |
7d00ffec | 8372 | && strcmp (parent->name (cu), "::") == 0 |
acebe513 UW |
8373 | && grandparent_scope == NULL) |
8374 | { | |
8375 | parent->scope = NULL; | |
8376 | parent->scope_set = 1; | |
8377 | return NULL; | |
8378 | } | |
8379 | ||
0a4b0913 | 8380 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8381 | if (pdi->tag == DW_TAG_enumerator) |
8382 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8383 | parent->scope = grandparent_scope; | |
8384 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8385 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8386 | || parent->tag == DW_TAG_structure_type |
8387 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8388 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8389 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8390 | || parent->tag == DW_TAG_enumeration_type |
8391 | || (cu->language == language_fortran | |
8392 | && parent->tag == DW_TAG_subprogram | |
8393 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8394 | { |
8395 | if (grandparent_scope == NULL) | |
7d00ffec | 8396 | parent->scope = parent->name (cu); |
72bf9492 | 8397 | else |
3e43a32a MS |
8398 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8399 | grandparent_scope, | |
7d00ffec | 8400 | parent->name (cu), 0, cu); |
72bf9492 | 8401 | } |
72bf9492 DJ |
8402 | else |
8403 | { | |
8404 | /* FIXME drow/2004-04-01: What should we be doing with | |
8405 | function-local names? For partial symbols, we should probably be | |
8406 | ignoring them. */ | |
fa9c3fa0 TT |
8407 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8408 | dwarf_tag_name (parent->tag), | |
8409 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8410 | parent->scope = grandparent_scope; |
c906108c SS |
8411 | } |
8412 | ||
72bf9492 DJ |
8413 | parent->scope_set = 1; |
8414 | return parent->scope; | |
8415 | } | |
8416 | ||
8417 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8418 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8419 | |
43816ebc | 8420 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8421 | partial_die_full_name (struct partial_die_info *pdi, |
8422 | struct dwarf2_cu *cu) | |
8423 | { | |
15d034d0 | 8424 | const char *parent_scope; |
72bf9492 | 8425 | |
98bfdba5 PA |
8426 | /* If this is a template instantiation, we can not work out the |
8427 | template arguments from partial DIEs. So, unfortunately, we have | |
8428 | to go through the full DIEs. At least any work we do building | |
8429 | types here will be reused if full symbols are loaded later. */ | |
8430 | if (pdi->has_template_arguments) | |
8431 | { | |
52356b79 | 8432 | pdi->fixup (cu); |
98bfdba5 | 8433 | |
7d00ffec | 8434 | if (pdi->name (cu) != NULL && strchr (pdi->name (cu), '<') == NULL) |
98bfdba5 PA |
8435 | { |
8436 | struct die_info *die; | |
8437 | struct attribute attr; | |
8438 | struct dwarf2_cu *ref_cu = cu; | |
8439 | ||
b64f50a1 | 8440 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8441 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8442 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8443 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8444 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8445 | ||
43816ebc | 8446 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8447 | } |
8448 | } | |
8449 | ||
72bf9492 DJ |
8450 | parent_scope = partial_die_parent_scope (pdi, cu); |
8451 | if (parent_scope == NULL) | |
8452 | return NULL; | |
8453 | else | |
43816ebc | 8454 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
7d00ffec TT |
8455 | pdi->name (cu), |
8456 | 0, cu)); | |
c906108c SS |
8457 | } |
8458 | ||
8459 | static void | |
72bf9492 | 8460 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8461 | { |
976ca316 SM |
8462 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
8463 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 8464 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8465 | CORE_ADDR addr = 0; |
15d034d0 | 8466 | const char *actual_name = NULL; |
e142c38c DJ |
8467 | CORE_ADDR baseaddr; |
8468 | ||
b3b3bada | 8469 | baseaddr = objfile->text_section_offset (); |
c906108c | 8470 | |
43816ebc TT |
8471 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8472 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8473 | if (built_actual_name != NULL) |
43816ebc | 8474 | actual_name = built_actual_name.get (); |
63d06c5c | 8475 | |
72bf9492 | 8476 | if (actual_name == NULL) |
7d00ffec | 8477 | actual_name = pdi->name (cu); |
72bf9492 | 8478 | |
76e288d1 TT |
8479 | partial_symbol psymbol; |
8480 | memset (&psymbol, 0, sizeof (psymbol)); | |
8481 | psymbol.ginfo.set_language (cu->language, &objfile->objfile_obstack); | |
8482 | psymbol.ginfo.section = -1; | |
8483 | ||
8484 | /* The code below indicates that the psymbol should be installed by | |
8485 | setting this. */ | |
8486 | gdb::optional<psymbol_placement> where; | |
8487 | ||
c906108c SS |
8488 | switch (pdi->tag) |
8489 | { | |
b1dc1806 | 8490 | case DW_TAG_inlined_subroutine: |
c906108c | 8491 | case DW_TAG_subprogram: |
79748972 TT |
8492 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8493 | - baseaddr); | |
0a4b0913 AB |
8494 | if (pdi->is_external |
8495 | || cu->language == language_ada | |
8496 | || (cu->language == language_fortran | |
8497 | && pdi->die_parent != NULL | |
8498 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8499 | { | |
8500 | /* Normally, only "external" DIEs are part of the global scope. | |
8501 | But in Ada and Fortran, we want to be able to access nested | |
8502 | procedures globally. So all Ada and Fortran subprograms are | |
8503 | stored in the global scope. */ | |
76e288d1 | 8504 | where = psymbol_placement::GLOBAL; |
c906108c SS |
8505 | } |
8506 | else | |
76e288d1 TT |
8507 | where = psymbol_placement::STATIC; |
8508 | ||
8509 | psymbol.domain = VAR_DOMAIN; | |
8510 | psymbol.aclass = LOC_BLOCK; | |
8511 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8512 | psymbol.ginfo.value.address = addr; | |
0c1b455e TT |
8513 | |
8514 | if (pdi->main_subprogram && actual_name != NULL) | |
8515 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8516 | break; |
72929c62 | 8517 | case DW_TAG_constant: |
76e288d1 TT |
8518 | psymbol.domain = VAR_DOMAIN; |
8519 | psymbol.aclass = LOC_STATIC; | |
8520 | where = (pdi->is_external | |
8521 | ? psymbol_placement::GLOBAL | |
8522 | : psymbol_placement::STATIC); | |
72929c62 | 8523 | break; |
c906108c | 8524 | case DW_TAG_variable: |
95554aad TT |
8525 | if (pdi->d.locdesc) |
8526 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8527 | |
95554aad | 8528 | if (pdi->d.locdesc |
caac4577 | 8529 | && addr == 0 |
976ca316 | 8530 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
8531 | { |
8532 | /* A global or static variable may also have been stripped | |
8533 | out by the linker if unused, in which case its address | |
8534 | will be nullified; do not add such variables into partial | |
8535 | symbol table then. */ | |
8536 | } | |
8537 | else if (pdi->is_external) | |
c906108c SS |
8538 | { |
8539 | /* Global Variable. | |
8540 | Don't enter into the minimal symbol tables as there is | |
8541 | a minimal symbol table entry from the ELF symbols already. | |
8542 | Enter into partial symbol table if it has a location | |
8543 | descriptor or a type. | |
8544 | If the location descriptor is missing, new_symbol will create | |
8545 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8546 | be determined from the minimal symbol table whenever the variable | |
8547 | is referenced. | |
8548 | The address for the partial symbol table entry is not | |
8549 | used by GDB, but it comes in handy for debugging partial symbol | |
8550 | table building. */ | |
8551 | ||
95554aad | 8552 | if (pdi->d.locdesc || pdi->has_type) |
76e288d1 TT |
8553 | { |
8554 | psymbol.domain = VAR_DOMAIN; | |
8555 | psymbol.aclass = LOC_STATIC; | |
8556 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8557 | psymbol.ginfo.value.address = addr; | |
8558 | where = psymbol_placement::GLOBAL; | |
8559 | } | |
c906108c SS |
8560 | } |
8561 | else | |
8562 | { | |
ff908ebf AW |
8563 | int has_loc = pdi->d.locdesc != NULL; |
8564 | ||
8565 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8566 | without location descriptors or constant values). */ | |
8567 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8568 | return; |
ff908ebf | 8569 | |
76e288d1 TT |
8570 | psymbol.domain = VAR_DOMAIN; |
8571 | psymbol.aclass = LOC_STATIC; | |
8572 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8573 | if (has_loc) | |
8574 | psymbol.ginfo.value.address = addr; | |
8575 | where = psymbol_placement::STATIC; | |
c906108c SS |
8576 | } |
8577 | break; | |
8578 | case DW_TAG_typedef: | |
8579 | case DW_TAG_base_type: | |
a02abb62 | 8580 | case DW_TAG_subrange_type: |
76e288d1 TT |
8581 | psymbol.domain = VAR_DOMAIN; |
8582 | psymbol.aclass = LOC_TYPEDEF; | |
8583 | where = psymbol_placement::STATIC; | |
c906108c | 8584 | break; |
74921315 | 8585 | case DW_TAG_imported_declaration: |
72bf9492 | 8586 | case DW_TAG_namespace: |
76e288d1 TT |
8587 | psymbol.domain = VAR_DOMAIN; |
8588 | psymbol.aclass = LOC_TYPEDEF; | |
8589 | where = psymbol_placement::GLOBAL; | |
72bf9492 | 8590 | break; |
530e8392 | 8591 | case DW_TAG_module: |
a5fd13a9 BH |
8592 | /* With Fortran 77 there might be a "BLOCK DATA" module |
8593 | available without any name. If so, we skip the module as it | |
8594 | doesn't bring any value. */ | |
8595 | if (actual_name != nullptr) | |
76e288d1 TT |
8596 | { |
8597 | psymbol.domain = MODULE_DOMAIN; | |
8598 | psymbol.aclass = LOC_TYPEDEF; | |
8599 | where = psymbol_placement::GLOBAL; | |
8600 | } | |
530e8392 | 8601 | break; |
c906108c | 8602 | case DW_TAG_class_type: |
680b30c7 | 8603 | case DW_TAG_interface_type: |
c906108c SS |
8604 | case DW_TAG_structure_type: |
8605 | case DW_TAG_union_type: | |
8606 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
8607 | /* Skip external references. The DWARF standard says in the section |
8608 | about "Structure, Union, and Class Type Entries": "An incomplete | |
8609 | structure, union or class type is represented by a structure, | |
8610 | union or class entry that does not have a byte size attribute | |
8611 | and that has a DW_AT_declaration attribute." */ | |
8612 | if (!pdi->has_byte_size && pdi->is_declaration) | |
43816ebc | 8613 | return; |
fa4028e9 | 8614 | |
63d06c5c DC |
8615 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8616 | static vs. global. */ | |
76e288d1 TT |
8617 | psymbol.domain = STRUCT_DOMAIN; |
8618 | psymbol.aclass = LOC_TYPEDEF; | |
8619 | where = (cu->language == language_cplus | |
8620 | ? psymbol_placement::GLOBAL | |
8621 | : psymbol_placement::STATIC); | |
c906108c SS |
8622 | break; |
8623 | case DW_TAG_enumerator: | |
76e288d1 TT |
8624 | psymbol.domain = VAR_DOMAIN; |
8625 | psymbol.aclass = LOC_CONST; | |
8626 | where = (cu->language == language_cplus | |
8627 | ? psymbol_placement::GLOBAL | |
8628 | : psymbol_placement::STATIC); | |
c906108c SS |
8629 | break; |
8630 | default: | |
8631 | break; | |
8632 | } | |
76e288d1 TT |
8633 | |
8634 | if (where.has_value ()) | |
8635 | { | |
f049a313 TT |
8636 | if (built_actual_name != nullptr) |
8637 | actual_name = objfile->intern (actual_name); | |
bcfe6157 TT |
8638 | if (pdi->linkage_name == nullptr || cu->language == language_ada) |
8639 | psymbol.ginfo.set_linkage_name (actual_name); | |
8640 | else | |
8641 | { | |
8642 | psymbol.ginfo.set_demangled_name (actual_name, | |
8643 | &objfile->objfile_obstack); | |
8644 | psymbol.ginfo.set_linkage_name (pdi->linkage_name); | |
8645 | } | |
76e288d1 TT |
8646 | add_psymbol_to_list (psymbol, *where, objfile); |
8647 | } | |
c906108c SS |
8648 | } |
8649 | ||
5c4e30ca DC |
8650 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8651 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8652 | the name of the enclosing namespace. */ | |
91c24f0a | 8653 | |
72bf9492 DJ |
8654 | static void |
8655 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8656 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8657 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8658 | { |
72bf9492 | 8659 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8660 | |
72bf9492 | 8661 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8662 | |
8663 | /* Now scan partial symbols in that namespace. */ | |
8664 | ||
91c24f0a | 8665 | if (pdi->has_children) |
cdc07690 | 8666 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8667 | } |
8668 | ||
5d7cb8df JK |
8669 | /* Read a partial die corresponding to a Fortran module. */ |
8670 | ||
8671 | static void | |
8672 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8673 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8674 | { |
530e8392 KB |
8675 | /* Add a symbol for the namespace. */ |
8676 | ||
8677 | add_partial_symbol (pdi, cu); | |
8678 | ||
f55ee35c | 8679 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8680 | |
8681 | if (pdi->has_children) | |
cdc07690 | 8682 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8683 | } |
8684 | ||
b1dc1806 XR |
8685 | /* Read a partial die corresponding to a subprogram or an inlined |
8686 | subprogram and create a partial symbol for that subprogram. | |
8687 | When the CU language allows it, this routine also defines a partial | |
8688 | symbol for each nested subprogram that this subprogram contains. | |
8689 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8690 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8691 | |
cdc07690 YQ |
8692 | PDI may also be a lexical block, in which case we simply search |
8693 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8694 | Again, this is only performed when the CU language allows this |
8695 | type of definitions. */ | |
8696 | ||
8697 | static void | |
8698 | add_partial_subprogram (struct partial_die_info *pdi, | |
8699 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8700 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8701 | { |
b1dc1806 | 8702 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8703 | { |
8704 | if (pdi->has_pc_info) | |
8705 | { | |
8706 | if (pdi->lowpc < *lowpc) | |
8707 | *lowpc = pdi->lowpc; | |
8708 | if (pdi->highpc > *highpc) | |
8709 | *highpc = pdi->highpc; | |
cdc07690 | 8710 | if (set_addrmap) |
5734ee8b | 8711 | { |
5e22e966 | 8712 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 8713 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8714 | CORE_ADDR baseaddr; |
b926417a TT |
8715 | CORE_ADDR this_highpc; |
8716 | CORE_ADDR this_lowpc; | |
5734ee8b | 8717 | |
b3b3bada | 8718 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8719 | this_lowpc |
8720 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8721 | pdi->lowpc + baseaddr) | |
8722 | - baseaddr); | |
8723 | this_highpc | |
8724 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8725 | pdi->highpc + baseaddr) | |
8726 | - baseaddr); | |
d320c2b5 | 8727 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8728 | this_lowpc, this_highpc - 1, |
9291a0cd | 8729 | cu->per_cu->v.psymtab); |
5734ee8b | 8730 | } |
481860b3 GB |
8731 | } |
8732 | ||
8733 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8734 | { | |
bc30ff58 | 8735 | if (!pdi->is_declaration) |
e8d05480 JB |
8736 | /* Ignore subprogram DIEs that do not have a name, they are |
8737 | illegal. Do not emit a complaint at this point, we will | |
8738 | do so when we convert this psymtab into a symtab. */ | |
7d00ffec | 8739 | if (pdi->name (cu)) |
e8d05480 | 8740 | add_partial_symbol (pdi, cu); |
bc30ff58 JB |
8741 | } |
8742 | } | |
6e70227d | 8743 | |
bc30ff58 JB |
8744 | if (! pdi->has_children) |
8745 | return; | |
8746 | ||
0a4b0913 | 8747 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8748 | { |
8749 | pdi = pdi->die_child; | |
8750 | while (pdi != NULL) | |
8751 | { | |
52356b79 | 8752 | pdi->fixup (cu); |
bc30ff58 | 8753 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8754 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8755 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8756 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8757 | pdi = pdi->die_sibling; |
8758 | } | |
8759 | } | |
8760 | } | |
8761 | ||
91c24f0a DC |
8762 | /* Read a partial die corresponding to an enumeration type. */ |
8763 | ||
72bf9492 DJ |
8764 | static void |
8765 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8766 | struct dwarf2_cu *cu) | |
91c24f0a | 8767 | { |
72bf9492 | 8768 | struct partial_die_info *pdi; |
91c24f0a | 8769 | |
7d00ffec | 8770 | if (enum_pdi->name (cu) != NULL) |
72bf9492 DJ |
8771 | add_partial_symbol (enum_pdi, cu); |
8772 | ||
8773 | pdi = enum_pdi->die_child; | |
8774 | while (pdi) | |
91c24f0a | 8775 | { |
7d00ffec | 8776 | if (pdi->tag != DW_TAG_enumerator || pdi->raw_name == NULL) |
b98664d3 | 8777 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8778 | else |
72bf9492 DJ |
8779 | add_partial_symbol (pdi, cu); |
8780 | pdi = pdi->die_sibling; | |
91c24f0a | 8781 | } |
91c24f0a DC |
8782 | } |
8783 | ||
6caca83c CC |
8784 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8785 | ||
8786 | static unsigned int | |
d521ce57 | 8787 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8788 | { |
8789 | unsigned int bytes_read; | |
8790 | ||
8791 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8792 | } | |
8793 | ||
685af9cd TT |
8794 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8795 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8796 | ||
4bb7a0a7 DJ |
8797 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8798 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8799 | the initial number. */ | |
8800 | ||
8801 | static struct abbrev_info * | |
685af9cd TT |
8802 | peek_die_abbrev (const die_reader_specs &reader, |
8803 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8804 | { |
685af9cd | 8805 | dwarf2_cu *cu = reader.cu; |
5e22e966 | 8806 | bfd *abfd = cu->per_objfile->objfile->obfd; |
685af9cd TT |
8807 | unsigned int abbrev_number |
8808 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8809 | |
8810 | if (abbrev_number == 0) | |
8811 | return NULL; | |
8812 | ||
685af9cd | 8813 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8814 | if (!abbrev) |
8815 | { | |
422b9917 | 8816 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8817 | " at offset %s [in module %s]"), |
422b9917 | 8818 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8819 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8820 | } |
8821 | ||
8822 | return abbrev; | |
8823 | } | |
8824 | ||
93311388 DE |
8825 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8826 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8827 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8828 | ||
d521ce57 TT |
8829 | static const gdb_byte * |
8830 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8831 | { |
4bb7a0a7 DJ |
8832 | while (1) |
8833 | { | |
685af9cd TT |
8834 | unsigned int bytes_read; |
8835 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8836 | ||
4bb7a0a7 DJ |
8837 | if (abbrev == NULL) |
8838 | return info_ptr + bytes_read; | |
8839 | else | |
dee91e82 | 8840 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8841 | } |
8842 | } | |
8843 | ||
93311388 DE |
8844 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8845 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8846 | abbrev corresponding to that skipped uleb128 should be passed in |
8847 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8848 | children. */ | |
8849 | ||
d521ce57 TT |
8850 | static const gdb_byte * |
8851 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8852 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8853 | { |
8854 | unsigned int bytes_read; | |
8855 | struct attribute attr; | |
dee91e82 DE |
8856 | bfd *abfd = reader->abfd; |
8857 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8858 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8859 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8860 | unsigned int form, i; |
8861 | ||
8862 | for (i = 0; i < abbrev->num_attrs; i++) | |
8863 | { | |
8864 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8865 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8866 | { | |
18a8505e AT |
8867 | bool ignored; |
8868 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr, | |
8869 | &ignored); | |
4bb7a0a7 | 8870 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8871 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8872 | else |
b9502d3f | 8873 | { |
0826b30a | 8874 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8875 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8876 | |
8877 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8878 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8879 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8880 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8881 | else |
8882 | return sibling_ptr; | |
8883 | } | |
4bb7a0a7 DJ |
8884 | } |
8885 | ||
8886 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8887 | form = abbrev->attrs[i].form; | |
8888 | skip_attribute: | |
8889 | switch (form) | |
8890 | { | |
4bb7a0a7 | 8891 | case DW_FORM_ref_addr: |
ae411497 TT |
8892 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8893 | and later it is offset sized. */ | |
8894 | if (cu->header.version == 2) | |
8895 | info_ptr += cu->header.addr_size; | |
8896 | else | |
8897 | info_ptr += cu->header.offset_size; | |
8898 | break; | |
36586728 TT |
8899 | case DW_FORM_GNU_ref_alt: |
8900 | info_ptr += cu->header.offset_size; | |
8901 | break; | |
ae411497 | 8902 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8903 | info_ptr += cu->header.addr_size; |
8904 | break; | |
8905 | case DW_FORM_data1: | |
8906 | case DW_FORM_ref1: | |
8907 | case DW_FORM_flag: | |
8fe0f950 | 8908 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8909 | info_ptr += 1; |
8910 | break; | |
2dc7f7b3 | 8911 | case DW_FORM_flag_present: |
43988095 | 8912 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8913 | break; |
4bb7a0a7 DJ |
8914 | case DW_FORM_data2: |
8915 | case DW_FORM_ref2: | |
8fe0f950 | 8916 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8917 | info_ptr += 2; |
8918 | break; | |
8fe0f950 AT |
8919 | case DW_FORM_strx3: |
8920 | info_ptr += 3; | |
8921 | break; | |
4bb7a0a7 DJ |
8922 | case DW_FORM_data4: |
8923 | case DW_FORM_ref4: | |
8fe0f950 | 8924 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8925 | info_ptr += 4; |
8926 | break; | |
8927 | case DW_FORM_data8: | |
8928 | case DW_FORM_ref8: | |
55f1336d | 8929 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8930 | info_ptr += 8; |
8931 | break; | |
0224619f JK |
8932 | case DW_FORM_data16: |
8933 | info_ptr += 16; | |
8934 | break; | |
4bb7a0a7 | 8935 | case DW_FORM_string: |
9b1c24c8 | 8936 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8937 | info_ptr += bytes_read; |
8938 | break; | |
2dc7f7b3 | 8939 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8940 | case DW_FORM_strp: |
36586728 | 8941 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8942 | info_ptr += cu->header.offset_size; |
8943 | break; | |
2dc7f7b3 | 8944 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8945 | case DW_FORM_block: |
8946 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8947 | info_ptr += bytes_read; | |
8948 | break; | |
8949 | case DW_FORM_block1: | |
8950 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8951 | break; | |
8952 | case DW_FORM_block2: | |
8953 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8954 | break; | |
8955 | case DW_FORM_block4: | |
8956 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8957 | break; | |
336d760d | 8958 | case DW_FORM_addrx: |
cf532bd1 | 8959 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8960 | case DW_FORM_sdata: |
8961 | case DW_FORM_udata: | |
8962 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8963 | case DW_FORM_GNU_addr_index: |
8964 | case DW_FORM_GNU_str_index: | |
18a8505e | 8965 | case DW_FORM_rnglistx: |
41144253 | 8966 | case DW_FORM_loclistx: |
d521ce57 | 8967 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8968 | break; |
8969 | case DW_FORM_indirect: | |
8970 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8971 | info_ptr += bytes_read; | |
8972 | /* We need to continue parsing from here, so just go back to | |
8973 | the top. */ | |
8974 | goto skip_attribute; | |
8975 | ||
8976 | default: | |
3e43a32a MS |
8977 | error (_("Dwarf Error: Cannot handle %s " |
8978 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8979 | dwarf_form_name (form), |
8980 | bfd_get_filename (abfd)); | |
8981 | } | |
8982 | } | |
8983 | ||
8984 | if (abbrev->has_children) | |
dee91e82 | 8985 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
8986 | else |
8987 | return info_ptr; | |
8988 | } | |
8989 | ||
93311388 | 8990 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 8991 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 8992 | |
d521ce57 | 8993 | static const gdb_byte * |
dee91e82 DE |
8994 | locate_pdi_sibling (const struct die_reader_specs *reader, |
8995 | struct partial_die_info *orig_pdi, | |
d521ce57 | 8996 | const gdb_byte *info_ptr) |
91c24f0a DC |
8997 | { |
8998 | /* Do we know the sibling already? */ | |
72bf9492 | 8999 | |
91c24f0a DC |
9000 | if (orig_pdi->sibling) |
9001 | return orig_pdi->sibling; | |
9002 | ||
9003 | /* Are there any children to deal with? */ | |
9004 | ||
9005 | if (!orig_pdi->has_children) | |
9006 | return info_ptr; | |
9007 | ||
4bb7a0a7 | 9008 | /* Skip the children the long way. */ |
91c24f0a | 9009 | |
dee91e82 | 9010 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9011 | } |
9012 | ||
257e7a09 | 9013 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9014 | not NULL. */ |
c906108c | 9015 | |
891813be TT |
9016 | void |
9017 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 9018 | { |
976ca316 | 9019 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 9020 | |
976ca316 | 9021 | gdb_assert (!per_objfile->symtab_set_p (per_cu_data)); |
af758d11 | 9022 | |
077cbab2 TT |
9023 | /* If this psymtab is constructed from a debug-only objfile, the |
9024 | has_section_at_zero flag will not necessarily be correct. We | |
9025 | can get the correct value for this flag by looking at the data | |
9026 | associated with the (presumably stripped) associated objfile. */ | |
9027 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 9028 | { |
976ca316 | 9029 | dwarf2_per_objfile *per_objfile_backlink |
077cbab2 | 9030 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
c906108c | 9031 | |
976ca316 SM |
9032 | per_objfile->per_bfd->has_section_at_zero |
9033 | = per_objfile_backlink->per_bfd->has_section_at_zero; | |
077cbab2 | 9034 | } |
98bfdba5 | 9035 | |
8566b89b | 9036 | expand_psymtab (objfile); |
95554aad | 9037 | |
976ca316 | 9038 | process_cu_includes (per_objfile); |
c906108c | 9039 | } |
9cdd5dbd DE |
9040 | \f |
9041 | /* Reading in full CUs. */ | |
c906108c | 9042 | |
10b3939b DJ |
9043 | /* Add PER_CU to the queue. */ |
9044 | ||
9045 | static void | |
120ce1b5 SM |
9046 | queue_comp_unit (dwarf2_per_cu_data *per_cu, |
9047 | dwarf2_per_objfile *per_objfile, | |
95554aad | 9048 | enum language pretend_language) |
10b3939b | 9049 | { |
10b3939b | 9050 | per_cu->queued = 1; |
120ce1b5 | 9051 | per_cu->per_bfd->queue.emplace (per_cu, per_objfile, pretend_language); |
10b3939b DJ |
9052 | } |
9053 | ||
89e63ee4 DE |
9054 | /* If PER_CU is not yet queued, add it to the queue. |
9055 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9056 | dependency. | |
0907af0c | 9057 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9058 | meaning either PER_CU is already queued or it is already loaded. |
9059 | ||
9060 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9061 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9062 | |
9063 | static int | |
89e63ee4 | 9064 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
120ce1b5 SM |
9065 | dwarf2_per_cu_data *per_cu, |
9066 | dwarf2_per_objfile *per_objfile, | |
0907af0c DE |
9067 | enum language pretend_language) |
9068 | { | |
9069 | /* We may arrive here during partial symbol reading, if we need full | |
9070 | DIEs to process an unusual case (e.g. template arguments). Do | |
9071 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
1859c670 | 9072 | if (per_cu->per_bfd->reading_partial_symbols) |
0907af0c | 9073 | { |
7188ed02 SM |
9074 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9075 | ||
9076 | if (cu == NULL || cu->dies == NULL) | |
0907af0c DE |
9077 | return 1; |
9078 | return 0; | |
9079 | } | |
9080 | ||
9081 | /* Mark the dependence relation so that we don't flush PER_CU | |
9082 | too early. */ | |
89e63ee4 DE |
9083 | if (dependent_cu != NULL) |
9084 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9085 | |
9086 | /* If it's already on the queue, we have nothing to do. */ | |
9087 | if (per_cu->queued) | |
9088 | return 0; | |
9089 | ||
9090 | /* If the compilation unit is already loaded, just mark it as | |
9091 | used. */ | |
7188ed02 SM |
9092 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9093 | if (cu != nullptr) | |
0907af0c | 9094 | { |
7188ed02 | 9095 | cu->last_used = 0; |
0907af0c DE |
9096 | return 0; |
9097 | } | |
9098 | ||
9099 | /* Add it to the queue. */ | |
120ce1b5 | 9100 | queue_comp_unit (per_cu, per_objfile, pretend_language); |
0907af0c DE |
9101 | |
9102 | return 1; | |
9103 | } | |
9104 | ||
10b3939b DJ |
9105 | /* Process the queue. */ |
9106 | ||
9107 | static void | |
976ca316 | 9108 | process_queue (dwarf2_per_objfile *per_objfile) |
10b3939b | 9109 | { |
b4f54984 | 9110 | if (dwarf_read_debug) |
45cfd468 DE |
9111 | { |
9112 | fprintf_unfiltered (gdb_stdlog, | |
9113 | "Expanding one or more symtabs of objfile %s ...\n", | |
976ca316 | 9114 | objfile_name (per_objfile->objfile)); |
45cfd468 DE |
9115 | } |
9116 | ||
03dd20cc DJ |
9117 | /* The queue starts out with one item, but following a DIE reference |
9118 | may load a new CU, adding it to the end of the queue. */ | |
976ca316 | 9119 | while (!per_objfile->per_bfd->queue.empty ()) |
10b3939b | 9120 | { |
976ca316 | 9121 | dwarf2_queue_item &item = per_objfile->per_bfd->queue.front (); |
7188ed02 | 9122 | dwarf2_per_cu_data *per_cu = item.per_cu; |
39856def | 9123 | |
976ca316 | 9124 | if (!per_objfile->symtab_set_p (per_cu)) |
f4dc4d17 | 9125 | { |
976ca316 | 9126 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
f4dc4d17 | 9127 | |
7188ed02 SM |
9128 | /* Skip dummy CUs. */ |
9129 | if (cu != nullptr) | |
73be47f5 | 9130 | { |
7188ed02 SM |
9131 | unsigned int debug_print_threshold; |
9132 | char buf[100]; | |
9133 | ||
9134 | if (per_cu->is_debug_types) | |
9135 | { | |
9136 | struct signatured_type *sig_type = | |
9137 | (struct signatured_type *) per_cu; | |
9138 | ||
9139 | sprintf (buf, "TU %s at offset %s", | |
9140 | hex_string (sig_type->signature), | |
9141 | sect_offset_str (per_cu->sect_off)); | |
9142 | /* There can be 100s of TUs. | |
9143 | Only print them in verbose mode. */ | |
9144 | debug_print_threshold = 2; | |
9145 | } | |
9146 | else | |
9147 | { | |
9148 | sprintf (buf, "CU at offset %s", | |
9149 | sect_offset_str (per_cu->sect_off)); | |
9150 | debug_print_threshold = 1; | |
9151 | } | |
247f5c4f | 9152 | |
7188ed02 SM |
9153 | if (dwarf_read_debug >= debug_print_threshold) |
9154 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); | |
f4dc4d17 | 9155 | |
7188ed02 SM |
9156 | if (per_cu->is_debug_types) |
9157 | process_full_type_unit (cu, item.pretend_language); | |
9158 | else | |
9159 | process_full_comp_unit (cu, item.pretend_language); | |
f4dc4d17 | 9160 | |
7188ed02 SM |
9161 | if (dwarf_read_debug >= debug_print_threshold) |
9162 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); | |
9163 | } | |
f4dc4d17 | 9164 | } |
10b3939b | 9165 | |
7188ed02 | 9166 | per_cu->queued = 0; |
976ca316 | 9167 | per_objfile->per_bfd->queue.pop (); |
10b3939b DJ |
9168 | } |
9169 | ||
b4f54984 | 9170 | if (dwarf_read_debug) |
45cfd468 DE |
9171 | { |
9172 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
976ca316 | 9173 | objfile_name (per_objfile->objfile)); |
45cfd468 | 9174 | } |
10b3939b DJ |
9175 | } |
9176 | ||
10b3939b DJ |
9177 | /* Read in full symbols for PST, and anything it depends on. */ |
9178 | ||
8566b89b TT |
9179 | void |
9180 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9181 | { |
af758d11 | 9182 | gdb_assert (!readin_p (objfile)); |
95554aad | 9183 | |
17ee85fc TT |
9184 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9185 | free_cached_comp_units freer (per_objfile); | |
48993951 | 9186 | expand_dependencies (objfile); |
aaa75496 | 9187 | |
97a1449a | 9188 | dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); |
5717c425 | 9189 | gdb_assert (get_compunit_symtab (objfile) != nullptr); |
10b3939b DJ |
9190 | } |
9191 | ||
af758d11 SM |
9192 | /* See psympriv.h. */ |
9193 | ||
9194 | bool | |
9195 | dwarf2_psymtab::readin_p (struct objfile *objfile) const | |
9196 | { | |
9197 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9198 | return per_objfile->symtab_set_p (per_cu_data); | |
9199 | } | |
9200 | ||
9201 | /* See psympriv.h. */ | |
9202 | ||
9203 | compunit_symtab * | |
9204 | dwarf2_psymtab::get_compunit_symtab (struct objfile *objfile) const | |
9205 | { | |
9206 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9207 | return per_objfile->get_symtab (per_cu_data); | |
9208 | } | |
9209 | ||
dee91e82 DE |
9210 | /* Trivial hash function for die_info: the hash value of a DIE |
9211 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9212 | |
dee91e82 DE |
9213 | static hashval_t |
9214 | die_hash (const void *item) | |
10b3939b | 9215 | { |
9a3c8263 | 9216 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9217 | |
9c541725 | 9218 | return to_underlying (die->sect_off); |
dee91e82 | 9219 | } |
63d06c5c | 9220 | |
dee91e82 DE |
9221 | /* Trivial comparison function for die_info structures: two DIEs |
9222 | are equal if they have the same offset. */ | |
98bfdba5 | 9223 | |
dee91e82 DE |
9224 | static int |
9225 | die_eq (const void *item_lhs, const void *item_rhs) | |
9226 | { | |
9a3c8263 SM |
9227 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9228 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9229 | |
9c541725 | 9230 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9231 | } |
c906108c | 9232 | |
c0ab21c2 | 9233 | /* Load the DIEs associated with PER_CU into memory. */ |
c906108c | 9234 | |
dee91e82 | 9235 | static void |
ab432490 SM |
9236 | load_full_comp_unit (dwarf2_per_cu_data *this_cu, |
9237 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 TT |
9238 | bool skip_partial, |
9239 | enum language pretend_language) | |
dee91e82 | 9240 | { |
c0ab21c2 TT |
9241 | gdb_assert (! this_cu->is_debug_types); |
9242 | ||
7188ed02 SM |
9243 | dwarf2_cu *existing_cu = per_objfile->get_cu (this_cu); |
9244 | cutu_reader reader (this_cu, per_objfile, NULL, existing_cu, skip_partial); | |
c0ab21c2 TT |
9245 | if (reader.dummy_p) |
9246 | return; | |
9247 | ||
9248 | struct dwarf2_cu *cu = reader.cu; | |
9249 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9250 | |
dee91e82 DE |
9251 | gdb_assert (cu->die_hash == NULL); |
9252 | cu->die_hash = | |
9253 | htab_create_alloc_ex (cu->header.length / 12, | |
9254 | die_hash, | |
9255 | die_eq, | |
9256 | NULL, | |
9257 | &cu->comp_unit_obstack, | |
9258 | hashtab_obstack_allocate, | |
9259 | dummy_obstack_deallocate); | |
e142c38c | 9260 | |
3e225074 | 9261 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
9262 | reader.comp_unit_die->child |
9263 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9264 | &info_ptr, reader.comp_unit_die); | |
9265 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9266 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9267 | |
9268 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9269 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9270 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9271 | or we won't be able to build types correctly. |
9272 | Similarly, if we do not read the producer, we can not apply | |
9273 | producer-specific interpretation. */ | |
c0ab21c2 | 9274 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
9275 | |
9276 | reader.keep (); | |
10b3939b DJ |
9277 | } |
9278 | ||
3da10d80 KS |
9279 | /* Add a DIE to the delayed physname list. */ |
9280 | ||
9281 | static void | |
9282 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9283 | const char *name, struct die_info *die, | |
9284 | struct dwarf2_cu *cu) | |
9285 | { | |
9286 | struct delayed_method_info mi; | |
9287 | mi.type = type; | |
9288 | mi.fnfield_index = fnfield_index; | |
9289 | mi.index = index; | |
9290 | mi.name = name; | |
9291 | mi.die = die; | |
c89b44cd | 9292 | cu->method_list.push_back (mi); |
3da10d80 KS |
9293 | } |
9294 | ||
3693fdb3 PA |
9295 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9296 | "const" / "volatile". If so, decrements LEN by the length of the | |
9297 | modifier and return true. Otherwise return false. */ | |
9298 | ||
9299 | template<size_t N> | |
9300 | static bool | |
9301 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9302 | { | |
9303 | size_t mod_len = sizeof (mod) - 1; | |
9304 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9305 | { | |
9306 | len -= mod_len; | |
9307 | return true; | |
9308 | } | |
9309 | return false; | |
9310 | } | |
9311 | ||
3da10d80 KS |
9312 | /* Compute the physnames of any methods on the CU's method list. |
9313 | ||
9314 | The computation of method physnames is delayed in order to avoid the | |
9315 | (bad) condition that one of the method's formal parameters is of an as yet | |
9316 | incomplete type. */ | |
9317 | ||
9318 | static void | |
9319 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9320 | { | |
3693fdb3 | 9321 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9322 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9323 | return; |
9324 | gdb_assert (cu->language == language_cplus); | |
9325 | ||
52941706 | 9326 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9327 | { |
1d06ead6 | 9328 | const char *physname; |
3da10d80 | 9329 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9330 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9331 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9332 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9333 | = physname ? physname : ""; |
3693fdb3 PA |
9334 | |
9335 | /* Since there's no tag to indicate whether a method is a | |
9336 | const/volatile overload, extract that information out of the | |
9337 | demangled name. */ | |
9338 | if (physname != NULL) | |
9339 | { | |
9340 | size_t len = strlen (physname); | |
9341 | ||
9342 | while (1) | |
9343 | { | |
9344 | if (physname[len] == ')') /* shortcut */ | |
9345 | break; | |
9346 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9347 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9348 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9349 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9350 | else |
9351 | break; | |
9352 | } | |
9353 | } | |
3da10d80 | 9354 | } |
c89b44cd TT |
9355 | |
9356 | /* The list is no longer needed. */ | |
9357 | cu->method_list.clear (); | |
3da10d80 KS |
9358 | } |
9359 | ||
a766d390 DE |
9360 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9361 | and it's not clear if/how imported objects will appear. | |
9362 | To keep Go support simple until that's worked out, | |
9363 | go back through what we've read and create something usable. | |
9364 | We could do this while processing each DIE, and feels kinda cleaner, | |
9365 | but that way is more invasive. | |
9366 | This is to, for example, allow the user to type "p var" or "b main" | |
9367 | without having to specify the package name, and allow lookups | |
9368 | of module.object to work in contexts that use the expression | |
9369 | parser. */ | |
9370 | ||
9371 | static void | |
9372 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9373 | { | |
421d1616 | 9374 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9375 | struct pending *list; |
9376 | int i; | |
9377 | ||
c24bdb02 | 9378 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9379 | list != NULL; |
9380 | list = list->next) | |
a766d390 DE |
9381 | { |
9382 | for (i = 0; i < list->nsyms; ++i) | |
9383 | { | |
9384 | struct symbol *sym = list->symbol[i]; | |
9385 | ||
c1b5c1eb | 9386 | if (sym->language () == language_go |
a766d390 DE |
9387 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9388 | { | |
421d1616 TT |
9389 | gdb::unique_xmalloc_ptr<char> this_package_name |
9390 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9391 | |
9392 | if (this_package_name == NULL) | |
9393 | continue; | |
9394 | if (package_name == NULL) | |
421d1616 | 9395 | package_name = std::move (this_package_name); |
a766d390 DE |
9396 | else |
9397 | { | |
5e22e966 | 9398 | struct objfile *objfile = cu->per_objfile->objfile; |
421d1616 | 9399 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9400 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9401 | (symbol_symtab (sym) != NULL |
9402 | ? symtab_to_filename_for_display | |
9403 | (symbol_symtab (sym)) | |
e3b94546 | 9404 | : objfile_name (objfile)), |
421d1616 | 9405 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9406 | } |
9407 | } | |
9408 | } | |
9409 | } | |
9410 | ||
9411 | if (package_name != NULL) | |
9412 | { | |
5e22e966 | 9413 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 9414 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9415 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9416 | saved_package_name); | |
a766d390 DE |
9417 | struct symbol *sym; |
9418 | ||
8c14c3a3 | 9419 | sym = new (&objfile->objfile_obstack) symbol; |
d3ecddab | 9420 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9421 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9422 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9423 | e.g., "main" finds the "main" module and not C's main(). */ | |
9424 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9425 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9426 | SYMBOL_TYPE (sym) = type; |
9427 | ||
c24bdb02 | 9428 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9429 | } |
9430 | } | |
9431 | ||
c9317f21 TT |
9432 | /* Allocate a fully-qualified name consisting of the two parts on the |
9433 | obstack. */ | |
9434 | ||
9435 | static const char * | |
9436 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9437 | { | |
9438 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9439 | } | |
9440 | ||
9c6a1327 TT |
9441 | /* A helper that allocates a variant part to attach to a Rust enum |
9442 | type. OBSTACK is where the results should be allocated. TYPE is | |
9443 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
57d02173 TT |
9444 | discriminant. It must be the index of one of the fields of TYPE, |
9445 | or -1 to mean there is no discriminant (univariant enum). | |
9c6a1327 TT |
9446 | DEFAULT_INDEX is the index of the default field; or -1 if there is |
9447 | no default. RANGES is indexed by "effective" field number (the | |
9448 | field index, but omitting the discriminant and default fields) and | |
9449 | must hold the discriminant values used by the variants. Note that | |
9450 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9451 | already allocated on it, or static. */ | |
c9317f21 | 9452 | |
9c6a1327 TT |
9453 | static void |
9454 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9455 | int discriminant_index, int default_index, | |
9456 | gdb::array_view<discriminant_range> ranges) | |
9457 | { | |
57d02173 TT |
9458 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. */ |
9459 | gdb_assert (discriminant_index == -1 | |
9460 | || (discriminant_index >= 0 | |
9461 | && discriminant_index < type->num_fields ())); | |
c9317f21 | 9462 | gdb_assert (default_index == -1 |
1f704f76 | 9463 | || (default_index >= 0 && default_index < type->num_fields ())); |
c9317f21 | 9464 | |
9c6a1327 | 9465 | /* We have one variant for each non-discriminant field. */ |
57d02173 TT |
9466 | int n_variants = type->num_fields (); |
9467 | if (discriminant_index != -1) | |
9468 | --n_variants; | |
c9317f21 | 9469 | |
9c6a1327 TT |
9470 | variant *variants = new (obstack) variant[n_variants]; |
9471 | int var_idx = 0; | |
9472 | int range_idx = 0; | |
1f704f76 | 9473 | for (int i = 0; i < type->num_fields (); ++i) |
9c6a1327 TT |
9474 | { |
9475 | if (i == discriminant_index) | |
9476 | continue; | |
c9317f21 | 9477 | |
9c6a1327 TT |
9478 | variants[var_idx].first_field = i; |
9479 | variants[var_idx].last_field = i + 1; | |
9480 | ||
9481 | /* The default field does not need a range, but other fields do. | |
9482 | We skipped the discriminant above. */ | |
9483 | if (i != default_index) | |
9484 | { | |
9485 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9486 | ++range_idx; | |
9487 | } | |
c9317f21 | 9488 | |
9c6a1327 TT |
9489 | ++var_idx; |
9490 | } | |
9491 | ||
9492 | gdb_assert (range_idx == ranges.size ()); | |
9493 | gdb_assert (var_idx == n_variants); | |
9494 | ||
9495 | variant_part *part = new (obstack) variant_part; | |
9496 | part->discriminant_index = discriminant_index; | |
57d02173 TT |
9497 | /* If there is no discriminant, then whether it is signed is of no |
9498 | consequence. */ | |
9499 | part->is_unsigned | |
9500 | = (discriminant_index == -1 | |
9501 | ? false | |
c6d940a9 | 9502 | : type->field (discriminant_index).type ()->is_unsigned ()); |
9c6a1327 TT |
9503 | part->variants = gdb::array_view<variant> (variants, n_variants); |
9504 | ||
9505 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9506 | gdb::array_view<variant_part> *prop_value | |
9507 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9508 | |
9c6a1327 | 9509 | struct dynamic_prop prop; |
8c2e4e06 | 9510 | prop.set_variant_parts (prop_value); |
9c6a1327 | 9511 | |
5c54719c | 9512 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
c9317f21 TT |
9513 | } |
9514 | ||
9515 | /* Some versions of rustc emitted enums in an unusual way. | |
9516 | ||
9517 | Ordinary enums were emitted as unions. The first element of each | |
9518 | structure in the union was named "RUST$ENUM$DISR". This element | |
9519 | held the discriminant. | |
9520 | ||
9521 | These versions of Rust also implemented the "non-zero" | |
9522 | optimization. When the enum had two values, and one is empty and | |
9523 | the other holds a pointer that cannot be zero, the pointer is used | |
9524 | as the discriminant, with a zero value meaning the empty variant. | |
9525 | Here, the union's first member is of the form | |
9526 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9527 | where the fieldnos are the indices of the fields that should be | |
9528 | traversed in order to find the field (which may be several fields deep) | |
9529 | and the variantname is the name of the variant of the case when the | |
9530 | field is zero. | |
9531 | ||
9532 | This function recognizes whether TYPE is of one of these forms, | |
9533 | and, if so, smashes it to be a variant type. */ | |
9534 | ||
9535 | static void | |
9536 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9537 | { | |
78134374 | 9538 | gdb_assert (type->code () == TYPE_CODE_UNION); |
c9317f21 TT |
9539 | |
9540 | /* We don't need to deal with empty enums. */ | |
1f704f76 | 9541 | if (type->num_fields () == 0) |
c9317f21 TT |
9542 | return; |
9543 | ||
9544 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
1f704f76 | 9545 | if (type->num_fields () == 1 |
c9317f21 TT |
9546 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) |
9547 | { | |
9548 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9549 | ||
9550 | /* Decode the field name to find the offset of the | |
9551 | discriminant. */ | |
9552 | ULONGEST bit_offset = 0; | |
940da03e | 9553 | struct type *field_type = type->field (0).type (); |
c9317f21 TT |
9554 | while (name[0] >= '0' && name[0] <= '9') |
9555 | { | |
9556 | char *tail; | |
9557 | unsigned long index = strtoul (name, &tail, 10); | |
9558 | name = tail; | |
9559 | if (*name != '$' | |
1f704f76 | 9560 | || index >= field_type->num_fields () |
c9317f21 TT |
9561 | || (TYPE_FIELD_LOC_KIND (field_type, index) |
9562 | != FIELD_LOC_KIND_BITPOS)) | |
9563 | { | |
b98664d3 | 9564 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9565 | "[in module %s]"), |
9566 | TYPE_FIELD_NAME (type, 0), | |
9567 | objfile_name (objfile)); | |
9568 | return; | |
9569 | } | |
9570 | ++name; | |
9571 | ||
9572 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
940da03e | 9573 | field_type = field_type->field (index).type (); |
c9317f21 TT |
9574 | } |
9575 | ||
9c6a1327 TT |
9576 | /* Smash this type to be a structure type. We have to do this |
9577 | because the type has already been recorded. */ | |
67607e24 | 9578 | type->set_code (TYPE_CODE_STRUCT); |
5e33d5f4 | 9579 | type->set_num_fields (3); |
9c6a1327 | 9580 | /* Save the field we care about. */ |
ceacbf6e | 9581 | struct field saved_field = type->field (0); |
3cabb6b0 SM |
9582 | type->set_fields |
9583 | ((struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field))); | |
c9317f21 | 9584 | |
9c6a1327 | 9585 | /* Put the discriminant at index 0. */ |
5d14b6e5 | 9586 | type->field (0).set_type (field_type); |
9c6a1327 TT |
9587 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9588 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
ceacbf6e | 9589 | SET_FIELD_BITPOS (type->field (0), bit_offset); |
c9317f21 TT |
9590 | |
9591 | /* The order of fields doesn't really matter, so put the real | |
9592 | field at index 1 and the data-less field at index 2. */ | |
ceacbf6e | 9593 | type->field (1) = saved_field; |
9c6a1327 | 9594 | TYPE_FIELD_NAME (type, 1) |
940da03e SM |
9595 | = rust_last_path_segment (type->field (1).type ()->name ()); |
9596 | type->field (1).type ()->set_name | |
7d93a1e0 | 9597 | (rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
d0e39ea2 | 9598 | TYPE_FIELD_NAME (type, 1))); |
c9317f21 TT |
9599 | |
9600 | const char *dataless_name | |
7d93a1e0 | 9601 | = rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
c9317f21 TT |
9602 | name); |
9603 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9604 | dataless_name); | |
5d14b6e5 | 9605 | type->field (2).set_type (dataless_type); |
c9317f21 TT |
9606 | /* NAME points into the original discriminant name, which |
9607 | already has the correct lifetime. */ | |
9c6a1327 | 9608 | TYPE_FIELD_NAME (type, 2) = name; |
ceacbf6e | 9609 | SET_FIELD_BITPOS (type->field (2), 0); |
c9317f21 | 9610 | |
9c6a1327 TT |
9611 | /* Indicate that this is a variant type. */ |
9612 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9613 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9614 | } |
77c2dba3 TT |
9615 | /* A union with a single anonymous field is probably an old-style |
9616 | univariant enum. */ | |
1f704f76 | 9617 | else if (type->num_fields () == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) |
c9317f21 | 9618 | { |
c9317f21 TT |
9619 | /* Smash this type to be a structure type. We have to do this |
9620 | because the type has already been recorded. */ | |
67607e24 | 9621 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9622 | |
940da03e | 9623 | struct type *field_type = type->field (0).type (); |
c9317f21 | 9624 | const char *variant_name |
7d93a1e0 | 9625 | = rust_last_path_segment (field_type->name ()); |
9c6a1327 | 9626 | TYPE_FIELD_NAME (type, 0) = variant_name; |
d0e39ea2 SM |
9627 | field_type->set_name |
9628 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9629 | type->name (), variant_name)); |
57d02173 TT |
9630 | |
9631 | alloc_rust_variant (&objfile->objfile_obstack, type, -1, 0, {}); | |
c9317f21 TT |
9632 | } |
9633 | else | |
9634 | { | |
9635 | struct type *disr_type = nullptr; | |
1f704f76 | 9636 | for (int i = 0; i < type->num_fields (); ++i) |
c9317f21 | 9637 | { |
940da03e | 9638 | disr_type = type->field (i).type (); |
c9317f21 | 9639 | |
78134374 | 9640 | if (disr_type->code () != TYPE_CODE_STRUCT) |
a037790e TT |
9641 | { |
9642 | /* All fields of a true enum will be structs. */ | |
9643 | return; | |
9644 | } | |
1f704f76 | 9645 | else if (disr_type->num_fields () == 0) |
c9317f21 TT |
9646 | { |
9647 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9648 | disr_type = nullptr; |
c9317f21 TT |
9649 | } |
9650 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9651 | "RUST$ENUM$DISR") != 0) | |
9652 | { | |
9653 | /* Not a Rust enum. */ | |
9654 | return; | |
9655 | } | |
9656 | else | |
9657 | { | |
9658 | /* Found one. */ | |
9659 | break; | |
9660 | } | |
9661 | } | |
9662 | ||
9663 | /* If we got here without a discriminant, then it's probably | |
9664 | just a union. */ | |
9665 | if (disr_type == nullptr) | |
9666 | return; | |
9667 | ||
9668 | /* Smash this type to be a structure type. We have to do this | |
9669 | because the type has already been recorded. */ | |
67607e24 | 9670 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9671 | |
9c6a1327 | 9672 | /* Make space for the discriminant field. */ |
ceacbf6e | 9673 | struct field *disr_field = &disr_type->field (0); |
9c6a1327 | 9674 | field *new_fields |
1f704f76 | 9675 | = (struct field *) TYPE_ZALLOC (type, ((type->num_fields () + 1) |
9c6a1327 | 9676 | * sizeof (struct field))); |
80fc5e77 | 9677 | memcpy (new_fields + 1, type->fields (), |
1f704f76 | 9678 | type->num_fields () * sizeof (struct field)); |
3cabb6b0 | 9679 | type->set_fields (new_fields); |
1f704f76 | 9680 | type->set_num_fields (type->num_fields () + 1); |
c9317f21 TT |
9681 | |
9682 | /* Install the discriminant at index 0 in the union. */ | |
ceacbf6e | 9683 | type->field (0) = *disr_field; |
9c6a1327 TT |
9684 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9685 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9686 | |
9687 | /* We need a way to find the correct discriminant given a | |
9688 | variant name. For convenience we build a map here. */ | |
b6cdac4b | 9689 | struct type *enum_type = disr_field->type (); |
c9317f21 | 9690 | std::unordered_map<std::string, ULONGEST> discriminant_map; |
1f704f76 | 9691 | for (int i = 0; i < enum_type->num_fields (); ++i) |
c9317f21 TT |
9692 | { |
9693 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9694 | { | |
9695 | const char *name | |
9696 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9697 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9698 | } | |
9699 | } | |
9700 | ||
1f704f76 | 9701 | int n_fields = type->num_fields (); |
9c6a1327 TT |
9702 | /* We don't need a range entry for the discriminant, but we do |
9703 | need one for every other field, as there is no default | |
9704 | variant. */ | |
9705 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9706 | discriminant_range, | |
9707 | n_fields - 1); | |
c9317f21 TT |
9708 | /* Skip the discriminant here. */ |
9709 | for (int i = 1; i < n_fields; ++i) | |
9710 | { | |
9711 | /* Find the final word in the name of this variant's type. | |
9712 | That name can be used to look up the correct | |
9713 | discriminant. */ | |
9714 | const char *variant_name | |
940da03e | 9715 | = rust_last_path_segment (type->field (i).type ()->name ()); |
c9317f21 TT |
9716 | |
9717 | auto iter = discriminant_map.find (variant_name); | |
9718 | if (iter != discriminant_map.end ()) | |
9c6a1327 | 9719 | { |
57d02173 TT |
9720 | ranges[i - 1].low = iter->second; |
9721 | ranges[i - 1].high = iter->second; | |
9c6a1327 | 9722 | } |
c9317f21 | 9723 | |
57d02173 TT |
9724 | /* In Rust, each element should have the size of the |
9725 | enclosing enum. */ | |
9726 | TYPE_LENGTH (type->field (i).type ()) = TYPE_LENGTH (type); | |
9727 | ||
bedda9ac | 9728 | /* Remove the discriminant field, if it exists. */ |
940da03e | 9729 | struct type *sub_type = type->field (i).type (); |
1f704f76 | 9730 | if (sub_type->num_fields () > 0) |
bedda9ac | 9731 | { |
5e33d5f4 | 9732 | sub_type->set_num_fields (sub_type->num_fields () - 1); |
3cabb6b0 | 9733 | sub_type->set_fields (sub_type->fields () + 1); |
bedda9ac | 9734 | } |
9c6a1327 | 9735 | TYPE_FIELD_NAME (type, i) = variant_name; |
d0e39ea2 SM |
9736 | sub_type->set_name |
9737 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9738 | type->name (), variant_name)); |
c9317f21 | 9739 | } |
9c6a1327 TT |
9740 | |
9741 | /* Indicate that this is a variant type. */ | |
a1520ad8 | 9742 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, -1, |
9c6a1327 TT |
9743 | gdb::array_view<discriminant_range> (ranges, |
9744 | n_fields - 1)); | |
c9317f21 TT |
9745 | } |
9746 | } | |
9747 | ||
9748 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9749 | ||
9750 | static void | |
9751 | rust_union_quirks (struct dwarf2_cu *cu) | |
9752 | { | |
9753 | gdb_assert (cu->language == language_rust); | |
52941706 | 9754 | for (type *type_ : cu->rust_unions) |
5e22e966 | 9755 | quirk_rust_enum (type_, cu->per_objfile->objfile); |
2d79090e TT |
9756 | /* We don't need this any more. */ |
9757 | cu->rust_unions.clear (); | |
c9317f21 TT |
9758 | } |
9759 | ||
8adb8487 TT |
9760 | /* See read.h. */ |
9761 | ||
9762 | type_unit_group_unshareable * | |
9763 | dwarf2_per_objfile::get_type_unit_group_unshareable (type_unit_group *tu_group) | |
9764 | { | |
9765 | auto iter = this->m_type_units.find (tu_group); | |
9766 | if (iter != this->m_type_units.end ()) | |
9767 | return iter->second.get (); | |
9768 | ||
9769 | type_unit_group_unshareable_up uniq (new type_unit_group_unshareable); | |
9770 | type_unit_group_unshareable *result = uniq.get (); | |
9771 | this->m_type_units[tu_group] = std::move (uniq); | |
9772 | return result; | |
9773 | } | |
9774 | ||
e286671b TT |
9775 | struct type * |
9776 | dwarf2_per_objfile::get_type_for_signatured_type | |
9777 | (signatured_type *sig_type) const | |
9778 | { | |
9779 | auto iter = this->m_type_map.find (sig_type); | |
9780 | if (iter == this->m_type_map.end ()) | |
9781 | return nullptr; | |
9782 | ||
9783 | return iter->second; | |
9784 | } | |
9785 | ||
9786 | void dwarf2_per_objfile::set_type_for_signatured_type | |
9787 | (signatured_type *sig_type, struct type *type) | |
9788 | { | |
9789 | gdb_assert (this->m_type_map.find (sig_type) == this->m_type_map.end ()); | |
9790 | ||
9791 | this->m_type_map[sig_type] = type; | |
9792 | } | |
9793 | ||
95554aad TT |
9794 | /* A helper function for computing the list of all symbol tables |
9795 | included by PER_CU. */ | |
9796 | ||
9797 | static void | |
4c39bc03 | 9798 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9799 | htab_t all_children, htab_t all_type_symtabs, |
43182c09 SM |
9800 | dwarf2_per_cu_data *per_cu, |
9801 | dwarf2_per_objfile *per_objfile, | |
43f3e411 | 9802 | struct compunit_symtab *immediate_parent) |
95554aad | 9803 | { |
af758d11 | 9804 | void **slot = htab_find_slot (all_children, per_cu, INSERT); |
95554aad TT |
9805 | if (*slot != NULL) |
9806 | { | |
9807 | /* This inclusion and its children have been processed. */ | |
9808 | return; | |
9809 | } | |
9810 | ||
9811 | *slot = per_cu; | |
af758d11 | 9812 | |
95554aad | 9813 | /* Only add a CU if it has a symbol table. */ |
43182c09 | 9814 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
43f3e411 | 9815 | if (cust != NULL) |
ec94af83 DE |
9816 | { |
9817 | /* If this is a type unit only add its symbol table if we haven't | |
9818 | seen it yet (type unit per_cu's can share symtabs). */ | |
9819 | if (per_cu->is_debug_types) | |
9820 | { | |
43f3e411 | 9821 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9822 | if (*slot == NULL) |
9823 | { | |
43f3e411 | 9824 | *slot = cust; |
4c39bc03 | 9825 | result->push_back (cust); |
43f3e411 DE |
9826 | if (cust->user == NULL) |
9827 | cust->user = immediate_parent; | |
ec94af83 DE |
9828 | } |
9829 | } | |
9830 | else | |
f9125b6c | 9831 | { |
4c39bc03 | 9832 | result->push_back (cust); |
43f3e411 DE |
9833 | if (cust->user == NULL) |
9834 | cust->user = immediate_parent; | |
f9125b6c | 9835 | } |
ec94af83 | 9836 | } |
95554aad | 9837 | |
ae640021 AB |
9838 | if (!per_cu->imported_symtabs_empty ()) |
9839 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9840 | { | |
9841 | recursively_compute_inclusions (result, all_children, | |
43182c09 SM |
9842 | all_type_symtabs, ptr, per_objfile, |
9843 | cust); | |
ae640021 | 9844 | } |
95554aad TT |
9845 | } |
9846 | ||
43f3e411 | 9847 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9848 | PER_CU. */ |
9849 | ||
9850 | static void | |
43182c09 SM |
9851 | compute_compunit_symtab_includes (dwarf2_per_cu_data *per_cu, |
9852 | dwarf2_per_objfile *per_objfile) | |
95554aad | 9853 | { |
f4dc4d17 DE |
9854 | gdb_assert (! per_cu->is_debug_types); |
9855 | ||
ae640021 | 9856 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9857 | { |
ae640021 | 9858 | int len; |
4c39bc03 | 9859 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 9860 | htab_t all_children, all_type_symtabs; |
43182c09 | 9861 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
95554aad TT |
9862 | |
9863 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9864 | if (cust == NULL) |
95554aad TT |
9865 | return; |
9866 | ||
9867 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
9868 | NULL, xcalloc, xfree); | |
ec94af83 DE |
9869 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
9870 | NULL, xcalloc, xfree); | |
95554aad | 9871 | |
ae640021 | 9872 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 DE |
9873 | { |
9874 | recursively_compute_inclusions (&result_symtabs, all_children, | |
43182c09 SM |
9875 | all_type_symtabs, ptr, per_objfile, |
9876 | cust); | |
ec94af83 | 9877 | } |
95554aad | 9878 | |
ec94af83 | 9879 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9880 | len = result_symtabs.size (); |
43f3e411 | 9881 | cust->includes |
f6e649dd | 9882 | = XOBNEWVEC (&per_objfile->objfile->objfile_obstack, |
8d749320 | 9883 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9884 | memcpy (cust->includes, result_symtabs.data (), |
9885 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9886 | cust->includes[len] = NULL; |
95554aad | 9887 | |
95554aad | 9888 | htab_delete (all_children); |
ec94af83 | 9889 | htab_delete (all_type_symtabs); |
95554aad TT |
9890 | } |
9891 | } | |
9892 | ||
9893 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9894 | read. */ | |
9895 | ||
9896 | static void | |
976ca316 | 9897 | process_cu_includes (dwarf2_per_objfile *per_objfile) |
95554aad | 9898 | { |
976ca316 | 9899 | for (dwarf2_per_cu_data *iter : per_objfile->per_bfd->just_read_cus) |
f4dc4d17 DE |
9900 | { |
9901 | if (! iter->is_debug_types) | |
976ca316 | 9902 | compute_compunit_symtab_includes (iter, per_objfile); |
f4dc4d17 | 9903 | } |
95554aad | 9904 | |
976ca316 | 9905 | per_objfile->per_bfd->just_read_cus.clear (); |
95554aad TT |
9906 | } |
9907 | ||
8fc0b21d | 9908 | /* Generate full symbol information for CU, whose DIEs have |
10b3939b DJ |
9909 | already been loaded into memory. */ |
9910 | ||
9911 | static void | |
8fc0b21d | 9912 | process_full_comp_unit (dwarf2_cu *cu, enum language pretend_language) |
10b3939b | 9913 | { |
976ca316 SM |
9914 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9915 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 9916 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 9917 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9918 | struct compunit_symtab *cust; |
10b3939b | 9919 | CORE_ADDR baseaddr; |
4359dff1 | 9920 | struct block *static_block; |
3e29f34a | 9921 | CORE_ADDR addr; |
10b3939b | 9922 | |
b3b3bada | 9923 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9924 | |
c89b44cd TT |
9925 | /* Clear the list here in case something was left over. */ |
9926 | cu->method_list.clear (); | |
10b3939b | 9927 | |
95554aad TT |
9928 | cu->language = pretend_language; |
9929 | cu->language_defn = language_def (cu->language); | |
9930 | ||
c906108c | 9931 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9932 | process_die (cu->dies, cu); |
c906108c | 9933 | |
a766d390 DE |
9934 | /* For now fudge the Go package. */ |
9935 | if (cu->language == language_go) | |
9936 | fixup_go_packaging (cu); | |
9937 | ||
5f48f8f3 | 9938 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9939 | should be complete, and it should now be safe to compute all of the |
9940 | physnames. */ | |
9941 | compute_delayed_physnames (cu); | |
3da10d80 | 9942 | |
c9317f21 TT |
9943 | if (cu->language == language_rust) |
9944 | rust_union_quirks (cu); | |
9945 | ||
fae299cd DC |
9946 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9947 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9948 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9949 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9950 | |
3e29f34a | 9951 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9952 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
9953 | |
9954 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
9955 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
9956 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
9957 | addrmap to help ensure it has an accurate map of pc values belonging to | |
9958 | this comp unit. */ | |
9959 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
9960 | ||
c24bdb02 | 9961 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
9962 | SECT_OFF_TEXT (objfile), |
9963 | 0); | |
c906108c | 9964 | |
43f3e411 | 9965 | if (cust != NULL) |
c906108c | 9966 | { |
df15bd07 | 9967 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 9968 | |
8be455d7 JK |
9969 | /* Set symtab language to language from DW_AT_language. If the |
9970 | compilation is from a C file generated by language preprocessors, do | |
9971 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 9972 | if (!(cu->language == language_c |
40e3ad0e | 9973 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 9974 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
9975 | |
9976 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
9977 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
9978 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
9979 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
9980 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
9981 | |
9982 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
9983 | needed, it would be wrong due to missing DW_AT_producer there. | |
9984 | ||
9985 | Still one can confuse GDB by using non-standard GCC compilation | |
9986 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 9987 | */ |
ab260dad | 9988 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 9989 | cust->locations_valid = 1; |
e0d00bc7 JK |
9990 | |
9991 | if (gcc_4_minor >= 5) | |
43f3e411 | 9992 | cust->epilogue_unwind_valid = 1; |
96408a79 | 9993 | |
43f3e411 | 9994 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 9995 | } |
9291a0cd | 9996 | |
976ca316 | 9997 | per_objfile->set_symtab (cu->per_cu, cust); |
c906108c | 9998 | |
95554aad | 9999 | /* Push it for inclusion processing later. */ |
976ca316 | 10000 | per_objfile->per_bfd->just_read_cus.push_back (cu->per_cu); |
804d2729 TT |
10001 | |
10002 | /* Not needed any more. */ | |
c24bdb02 | 10003 | cu->reset_builder (); |
f4dc4d17 | 10004 | } |
45cfd468 | 10005 | |
8fc0b21d | 10006 | /* Generate full symbol information for type unit CU, whose DIEs have |
f4dc4d17 DE |
10007 | already been loaded into memory. */ |
10008 | ||
10009 | static void | |
8fc0b21d | 10010 | process_full_type_unit (dwarf2_cu *cu, |
f4dc4d17 DE |
10011 | enum language pretend_language) |
10012 | { | |
976ca316 SM |
10013 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10014 | struct objfile *objfile = per_objfile->objfile; | |
43f3e411 | 10015 | struct compunit_symtab *cust; |
0186c6a7 DE |
10016 | struct signatured_type *sig_type; |
10017 | ||
8fc0b21d SM |
10018 | gdb_assert (cu->per_cu->is_debug_types); |
10019 | sig_type = (struct signatured_type *) cu->per_cu; | |
f4dc4d17 | 10020 | |
c89b44cd TT |
10021 | /* Clear the list here in case something was left over. */ |
10022 | cu->method_list.clear (); | |
f4dc4d17 | 10023 | |
f4dc4d17 DE |
10024 | cu->language = pretend_language; |
10025 | cu->language_defn = language_def (cu->language); | |
10026 | ||
10027 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10028 | process_die (cu->dies, cu); | |
10029 | ||
10030 | /* For now fudge the Go package. */ | |
10031 | if (cu->language == language_go) | |
10032 | fixup_go_packaging (cu); | |
10033 | ||
5f48f8f3 | 10034 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
10035 | should be complete, and it should now be safe to compute all of the |
10036 | physnames. */ | |
10037 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10038 | |
c9317f21 TT |
10039 | if (cu->language == language_rust) |
10040 | rust_union_quirks (cu); | |
10041 | ||
f4dc4d17 DE |
10042 | /* TUs share symbol tables. |
10043 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10044 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10045 | this TU's symbols to the existing symtab. */ | |
8adb8487 | 10046 | type_unit_group_unshareable *tug_unshare = |
976ca316 | 10047 | per_objfile->get_type_unit_group_unshareable (sig_type->type_unit_group); |
8adb8487 | 10048 | if (tug_unshare->compunit_symtab == NULL) |
45cfd468 | 10049 | { |
c24bdb02 KS |
10050 | buildsym_compunit *builder = cu->get_builder (); |
10051 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
8adb8487 | 10052 | tug_unshare->compunit_symtab = cust; |
f4dc4d17 | 10053 | |
43f3e411 | 10054 | if (cust != NULL) |
f4dc4d17 DE |
10055 | { |
10056 | /* Set symtab language to language from DW_AT_language. If the | |
10057 | compilation is from a C file generated by language preprocessors, | |
10058 | do not set the language if it was already deduced by | |
10059 | start_subfile. */ | |
43f3e411 DE |
10060 | if (!(cu->language == language_c |
10061 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10062 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10063 | } |
10064 | } | |
10065 | else | |
10066 | { | |
c24bdb02 | 10067 | cu->get_builder ()->augment_type_symtab (); |
8adb8487 | 10068 | cust = tug_unshare->compunit_symtab; |
f4dc4d17 DE |
10069 | } |
10070 | ||
976ca316 | 10071 | per_objfile->set_symtab (cu->per_cu, cust); |
804d2729 TT |
10072 | |
10073 | /* Not needed any more. */ | |
c24bdb02 | 10074 | cu->reset_builder (); |
c906108c SS |
10075 | } |
10076 | ||
95554aad TT |
10077 | /* Process an imported unit DIE. */ |
10078 | ||
10079 | static void | |
10080 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10081 | { | |
10082 | struct attribute *attr; | |
10083 | ||
f4dc4d17 DE |
10084 | /* For now we don't handle imported units in type units. */ |
10085 | if (cu->per_cu->is_debug_types) | |
10086 | { | |
10087 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10088 | " supported in type units [in module %s]"), | |
5e22e966 | 10089 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
10090 | } |
10091 | ||
95554aad TT |
10092 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10093 | if (attr != NULL) | |
10094 | { | |
0826b30a | 10095 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 | 10096 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
ab432490 | 10097 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9c541725 | 10098 | dwarf2_per_cu_data *per_cu |
ab432490 | 10099 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, per_objfile); |
95554aad | 10100 | |
58990295 TV |
10101 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
10102 | into another compilation unit, at root level. Regard this as a hint, | |
10103 | and ignore it. */ | |
10104 | if (die->parent && die->parent->parent == NULL | |
10105 | && per_cu->unit_type == DW_UT_compile | |
10106 | && per_cu->lang == language_cplus) | |
10107 | return; | |
10108 | ||
69d751e3 | 10109 | /* If necessary, add it to the queue and load its DIEs. */ |
120ce1b5 | 10110 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
ab432490 | 10111 | load_full_comp_unit (per_cu, per_objfile, false, cu->language); |
95554aad | 10112 | |
ae640021 | 10113 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
10114 | } |
10115 | } | |
10116 | ||
4c8aa72d PA |
10117 | /* RAII object that represents a process_die scope: i.e., |
10118 | starts/finishes processing a DIE. */ | |
10119 | class process_die_scope | |
adde2bff | 10120 | { |
4c8aa72d PA |
10121 | public: |
10122 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10123 | : m_die (die), m_cu (cu) | |
10124 | { | |
10125 | /* We should only be processing DIEs not already in process. */ | |
10126 | gdb_assert (!m_die->in_process); | |
10127 | m_die->in_process = true; | |
10128 | } | |
8c3cb9fa | 10129 | |
4c8aa72d PA |
10130 | ~process_die_scope () |
10131 | { | |
10132 | m_die->in_process = false; | |
10133 | ||
10134 | /* If we're done processing the DIE for the CU that owns the line | |
10135 | header, we don't need the line header anymore. */ | |
10136 | if (m_cu->line_header_die_owner == m_die) | |
10137 | { | |
10138 | delete m_cu->line_header; | |
10139 | m_cu->line_header = NULL; | |
10140 | m_cu->line_header_die_owner = NULL; | |
10141 | } | |
10142 | } | |
10143 | ||
10144 | private: | |
10145 | die_info *m_die; | |
10146 | dwarf2_cu *m_cu; | |
10147 | }; | |
adde2bff | 10148 | |
c906108c SS |
10149 | /* Process a die and its children. */ |
10150 | ||
10151 | static void | |
e7c27a73 | 10152 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10153 | { |
4c8aa72d | 10154 | process_die_scope scope (die, cu); |
adde2bff | 10155 | |
c906108c SS |
10156 | switch (die->tag) |
10157 | { | |
10158 | case DW_TAG_padding: | |
10159 | break; | |
10160 | case DW_TAG_compile_unit: | |
95554aad | 10161 | case DW_TAG_partial_unit: |
e7c27a73 | 10162 | read_file_scope (die, cu); |
c906108c | 10163 | break; |
348e048f DE |
10164 | case DW_TAG_type_unit: |
10165 | read_type_unit_scope (die, cu); | |
10166 | break; | |
c906108c | 10167 | case DW_TAG_subprogram: |
0a4b0913 AB |
10168 | /* Nested subprograms in Fortran get a prefix. */ |
10169 | if (cu->language == language_fortran | |
10170 | && die->parent != NULL | |
10171 | && die->parent->tag == DW_TAG_subprogram) | |
10172 | cu->processing_has_namespace_info = true; | |
10173 | /* Fall through. */ | |
c906108c | 10174 | case DW_TAG_inlined_subroutine: |
edb3359d | 10175 | read_func_scope (die, cu); |
c906108c SS |
10176 | break; |
10177 | case DW_TAG_lexical_block: | |
14898363 L |
10178 | case DW_TAG_try_block: |
10179 | case DW_TAG_catch_block: | |
e7c27a73 | 10180 | read_lexical_block_scope (die, cu); |
c906108c | 10181 | break; |
216f72a1 | 10182 | case DW_TAG_call_site: |
96408a79 SA |
10183 | case DW_TAG_GNU_call_site: |
10184 | read_call_site_scope (die, cu); | |
10185 | break; | |
c906108c | 10186 | case DW_TAG_class_type: |
680b30c7 | 10187 | case DW_TAG_interface_type: |
c906108c SS |
10188 | case DW_TAG_structure_type: |
10189 | case DW_TAG_union_type: | |
134d01f1 | 10190 | process_structure_scope (die, cu); |
c906108c SS |
10191 | break; |
10192 | case DW_TAG_enumeration_type: | |
134d01f1 | 10193 | process_enumeration_scope (die, cu); |
c906108c | 10194 | break; |
134d01f1 | 10195 | |
f792889a DJ |
10196 | /* These dies have a type, but processing them does not create |
10197 | a symbol or recurse to process the children. Therefore we can | |
10198 | read them on-demand through read_type_die. */ | |
c906108c | 10199 | case DW_TAG_subroutine_type: |
72019c9c | 10200 | case DW_TAG_set_type: |
c906108c | 10201 | case DW_TAG_array_type: |
c906108c | 10202 | case DW_TAG_pointer_type: |
c906108c | 10203 | case DW_TAG_ptr_to_member_type: |
c906108c | 10204 | case DW_TAG_reference_type: |
4297a3f0 | 10205 | case DW_TAG_rvalue_reference_type: |
c906108c | 10206 | case DW_TAG_string_type: |
c906108c | 10207 | break; |
134d01f1 | 10208 | |
c906108c | 10209 | case DW_TAG_base_type: |
a02abb62 | 10210 | case DW_TAG_subrange_type: |
cb249c71 | 10211 | case DW_TAG_typedef: |
134d01f1 DJ |
10212 | /* Add a typedef symbol for the type definition, if it has a |
10213 | DW_AT_name. */ | |
f792889a | 10214 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10215 | break; |
c906108c | 10216 | case DW_TAG_common_block: |
e7c27a73 | 10217 | read_common_block (die, cu); |
c906108c SS |
10218 | break; |
10219 | case DW_TAG_common_inclusion: | |
10220 | break; | |
d9fa45fe | 10221 | case DW_TAG_namespace: |
9068261f | 10222 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10223 | read_namespace (die, cu); |
d9fa45fe | 10224 | break; |
5d7cb8df | 10225 | case DW_TAG_module: |
9068261f | 10226 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10227 | read_module (die, cu); |
10228 | break; | |
d9fa45fe | 10229 | case DW_TAG_imported_declaration: |
9068261f | 10230 | cu->processing_has_namespace_info = true; |
74921315 KS |
10231 | if (read_namespace_alias (die, cu)) |
10232 | break; | |
86a73007 TT |
10233 | /* The declaration is not a global namespace alias. */ |
10234 | /* Fall through. */ | |
d9fa45fe | 10235 | case DW_TAG_imported_module: |
9068261f | 10236 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10237 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10238 | || cu->language != language_fortran)) | |
b98664d3 | 10239 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10240 | dwarf_tag_name (die->tag)); |
10241 | read_import_statement (die, cu); | |
d9fa45fe | 10242 | break; |
95554aad TT |
10243 | |
10244 | case DW_TAG_imported_unit: | |
10245 | process_imported_unit_die (die, cu); | |
10246 | break; | |
10247 | ||
71a3c369 TT |
10248 | case DW_TAG_variable: |
10249 | read_variable (die, cu); | |
10250 | break; | |
10251 | ||
c906108c | 10252 | default: |
e7c27a73 | 10253 | new_symbol (die, NULL, cu); |
c906108c SS |
10254 | break; |
10255 | } | |
10256 | } | |
ca69b9e6 DE |
10257 | \f |
10258 | /* DWARF name computation. */ | |
c906108c | 10259 | |
94af9270 KS |
10260 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10261 | needs to have the name of the scope prepended to the name listed in the | |
10262 | die. */ | |
10263 | ||
10264 | static int | |
10265 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10266 | { | |
1c809c68 TT |
10267 | struct attribute *attr; |
10268 | ||
94af9270 KS |
10269 | switch (die->tag) |
10270 | { | |
10271 | case DW_TAG_namespace: | |
10272 | case DW_TAG_typedef: | |
10273 | case DW_TAG_class_type: | |
10274 | case DW_TAG_interface_type: | |
10275 | case DW_TAG_structure_type: | |
10276 | case DW_TAG_union_type: | |
10277 | case DW_TAG_enumeration_type: | |
10278 | case DW_TAG_enumerator: | |
10279 | case DW_TAG_subprogram: | |
08a76f8a | 10280 | case DW_TAG_inlined_subroutine: |
94af9270 | 10281 | case DW_TAG_member: |
74921315 | 10282 | case DW_TAG_imported_declaration: |
94af9270 KS |
10283 | return 1; |
10284 | ||
10285 | case DW_TAG_variable: | |
c2b0a229 | 10286 | case DW_TAG_constant: |
94af9270 KS |
10287 | /* We only need to prefix "globally" visible variables. These include |
10288 | any variable marked with DW_AT_external or any variable that | |
10289 | lives in a namespace. [Variables in anonymous namespaces | |
10290 | require prefixing, but they are not DW_AT_external.] */ | |
10291 | ||
10292 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10293 | { | |
10294 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10295 | |
94af9270 KS |
10296 | return die_needs_namespace (die_specification (die, &spec_cu), |
10297 | spec_cu); | |
10298 | } | |
10299 | ||
1c809c68 | 10300 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10301 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10302 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10303 | return 0; |
10304 | /* A variable in a lexical block of some kind does not need a | |
10305 | namespace, even though in C++ such variables may be external | |
10306 | and have a mangled name. */ | |
10307 | if (die->parent->tag == DW_TAG_lexical_block | |
10308 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10309 | || die->parent->tag == DW_TAG_catch_block |
10310 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10311 | return 0; |
10312 | return 1; | |
94af9270 KS |
10313 | |
10314 | default: | |
10315 | return 0; | |
10316 | } | |
10317 | } | |
10318 | ||
73b9be8b KS |
10319 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10320 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10321 | defined for the given DIE. */ | |
10322 | ||
10323 | static struct attribute * | |
10324 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10325 | { | |
10326 | struct attribute *attr; | |
10327 | ||
10328 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10329 | if (attr == NULL) | |
10330 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10331 | ||
10332 | return attr; | |
10333 | } | |
10334 | ||
10335 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10336 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10337 | defined for the given DIE. */ | |
10338 | ||
10339 | static const char * | |
10340 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10341 | { | |
10342 | const char *linkage_name; | |
10343 | ||
10344 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10345 | if (linkage_name == NULL) | |
10346 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10347 | ||
787de330 TT |
10348 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10349 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10350 | if (cu->language == language_rust && linkage_name != NULL | |
10351 | && strchr (linkage_name, '{') != NULL) | |
10352 | linkage_name = NULL; | |
10353 | ||
73b9be8b KS |
10354 | return linkage_name; |
10355 | } | |
10356 | ||
94af9270 | 10357 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10358 | compute the physname for the object, which include a method's: |
9c37b5ae | 10359 | - formal parameters (C++), |
a766d390 | 10360 | - receiver type (Go), |
a766d390 DE |
10361 | |
10362 | The term "physname" is a bit confusing. | |
10363 | For C++, for example, it is the demangled name. | |
10364 | For Go, for example, it's the mangled name. | |
94af9270 | 10365 | |
af6b7be1 JB |
10366 | For Ada, return the DIE's linkage name rather than the fully qualified |
10367 | name. PHYSNAME is ignored.. | |
10368 | ||
5989a64e | 10369 | The result is allocated on the objfile->per_bfd's obstack and |
45940949 | 10370 | canonicalized. */ |
94af9270 KS |
10371 | |
10372 | static const char * | |
15d034d0 TT |
10373 | dwarf2_compute_name (const char *name, |
10374 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10375 | int physname) |
10376 | { | |
5e22e966 | 10377 | struct objfile *objfile = cu->per_objfile->objfile; |
bb5ed363 | 10378 | |
94af9270 KS |
10379 | if (name == NULL) |
10380 | name = dwarf2_name (die, cu); | |
10381 | ||
2ee7123e DE |
10382 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10383 | but otherwise compute it by typename_concat inside GDB. | |
10384 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10385 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10386 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10387 | will set the demangled name to the result of dwarf2_full_name, and it is |
10388 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10389 | if (cu->language == language_ada |
10390 | || (cu->language == language_fortran && physname)) | |
10391 | { | |
10392 | /* For Ada unit, we prefer the linkage name over the name, as | |
10393 | the former contains the exported name, which the user expects | |
10394 | to be able to reference. Ideally, we want the user to be able | |
10395 | to reference this entity using either natural or linkage name, | |
10396 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10397 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10398 | |
2ee7123e DE |
10399 | if (linkage_name != NULL) |
10400 | return linkage_name; | |
f55ee35c JK |
10401 | } |
10402 | ||
94af9270 KS |
10403 | /* These are the only languages we know how to qualify names in. */ |
10404 | if (name != NULL | |
9c37b5ae | 10405 | && (cu->language == language_cplus |
c44af4eb TT |
10406 | || cu->language == language_fortran || cu->language == language_d |
10407 | || cu->language == language_rust)) | |
94af9270 KS |
10408 | { |
10409 | if (die_needs_namespace (die, cu)) | |
10410 | { | |
0d5cff50 | 10411 | const char *prefix; |
34a68019 | 10412 | const char *canonical_name = NULL; |
94af9270 | 10413 | |
d7e74731 PA |
10414 | string_file buf; |
10415 | ||
94af9270 | 10416 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10417 | if (*prefix != '\0') |
10418 | { | |
43816ebc TT |
10419 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10420 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10421 | |
43816ebc | 10422 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10423 | } |
10424 | else | |
d7e74731 | 10425 | buf.puts (name); |
94af9270 | 10426 | |
98bfdba5 PA |
10427 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10428 | as children with DW_TAG_template_type_param or | |
10429 | DW_TAG_value_type_param. If the latter, add them to the name | |
10430 | here. If the name already has template parameters, then | |
10431 | skip this step; some versions of GCC emit both, and | |
10432 | it is more efficient to use the pre-computed name. | |
10433 | ||
10434 | Something to keep in mind about this process: it is very | |
10435 | unlikely, or in some cases downright impossible, to produce | |
10436 | something that will match the mangled name of a function. | |
10437 | If the definition of the function has the same debug info, | |
10438 | we should be able to match up with it anyway. But fallbacks | |
10439 | using the minimal symbol, for instance to find a method | |
10440 | implemented in a stripped copy of libstdc++, will not work. | |
10441 | If we do not have debug info for the definition, we will have to | |
10442 | match them up some other way. | |
10443 | ||
10444 | When we do name matching there is a related problem with function | |
10445 | templates; two instantiated function templates are allowed to | |
10446 | differ only by their return types, which we do not add here. */ | |
10447 | ||
10448 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10449 | { | |
10450 | struct attribute *attr; | |
10451 | struct die_info *child; | |
10452 | int first = 1; | |
10453 | ||
10454 | die->building_fullname = 1; | |
10455 | ||
10456 | for (child = die->child; child != NULL; child = child->sibling) | |
10457 | { | |
10458 | struct type *type; | |
12df843f | 10459 | LONGEST value; |
d521ce57 | 10460 | const gdb_byte *bytes; |
98bfdba5 PA |
10461 | struct dwarf2_locexpr_baton *baton; |
10462 | struct value *v; | |
10463 | ||
10464 | if (child->tag != DW_TAG_template_type_param | |
10465 | && child->tag != DW_TAG_template_value_param) | |
10466 | continue; | |
10467 | ||
10468 | if (first) | |
10469 | { | |
d7e74731 | 10470 | buf.puts ("<"); |
98bfdba5 PA |
10471 | first = 0; |
10472 | } | |
10473 | else | |
d7e74731 | 10474 | buf.puts (", "); |
98bfdba5 PA |
10475 | |
10476 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10477 | if (attr == NULL) | |
10478 | { | |
b98664d3 | 10479 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10480 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10481 | continue; |
10482 | } | |
10483 | type = die_type (child, cu); | |
10484 | ||
10485 | if (child->tag == DW_TAG_template_type_param) | |
10486 | { | |
c1ec8cea TT |
10487 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10488 | &type_print_raw_options); | |
98bfdba5 PA |
10489 | continue; |
10490 | } | |
10491 | ||
10492 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10493 | if (attr == NULL) | |
10494 | { | |
b98664d3 | 10495 | complaint (_("template parameter missing " |
3e43a32a | 10496 | "DW_AT_const_value")); |
d7e74731 | 10497 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10498 | continue; |
10499 | } | |
10500 | ||
10501 | dwarf2_const_value_attr (attr, type, name, | |
10502 | &cu->comp_unit_obstack, cu, | |
10503 | &value, &bytes, &baton); | |
10504 | ||
20ce4123 | 10505 | if (type->has_no_signedness ()) |
98bfdba5 PA |
10506 | /* GDB prints characters as NUMBER 'CHAR'. If that's |
10507 | changed, this can use value_print instead. */ | |
d7e74731 | 10508 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10509 | else |
10510 | { | |
10511 | struct value_print_options opts; | |
10512 | ||
10513 | if (baton != NULL) | |
10514 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10515 | baton->data, | |
10516 | baton->size, | |
9f47c707 SM |
10517 | baton->per_cu, |
10518 | baton->per_objfile); | |
98bfdba5 PA |
10519 | else if (bytes != NULL) |
10520 | { | |
10521 | v = allocate_value (type); | |
10522 | memcpy (value_contents_writeable (v), bytes, | |
10523 | TYPE_LENGTH (type)); | |
10524 | } | |
10525 | else | |
10526 | v = value_from_longest (type, value); | |
10527 | ||
3e43a32a MS |
10528 | /* Specify decimal so that we do not depend on |
10529 | the radix. */ | |
98bfdba5 PA |
10530 | get_formatted_print_options (&opts, 'd'); |
10531 | opts.raw = 1; | |
d7e74731 | 10532 | value_print (v, &buf, &opts); |
98bfdba5 | 10533 | release_value (v); |
98bfdba5 PA |
10534 | } |
10535 | } | |
10536 | ||
10537 | die->building_fullname = 0; | |
10538 | ||
10539 | if (!first) | |
10540 | { | |
10541 | /* Close the argument list, with a space if necessary | |
10542 | (nested templates). */ | |
d7e74731 PA |
10543 | if (!buf.empty () && buf.string ().back () == '>') |
10544 | buf.puts (" >"); | |
98bfdba5 | 10545 | else |
d7e74731 | 10546 | buf.puts (">"); |
98bfdba5 PA |
10547 | } |
10548 | } | |
10549 | ||
9c37b5ae | 10550 | /* For C++ methods, append formal parameter type |
94af9270 | 10551 | information, if PHYSNAME. */ |
6e70227d | 10552 | |
94af9270 | 10553 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10554 | && cu->language == language_cplus) |
94af9270 KS |
10555 | { |
10556 | struct type *type = read_type_die (die, cu); | |
10557 | ||
d7e74731 | 10558 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10559 | &type_print_raw_options); |
94af9270 | 10560 | |
9c37b5ae | 10561 | if (cu->language == language_cplus) |
94af9270 | 10562 | { |
60430eff DJ |
10563 | /* Assume that an artificial first parameter is |
10564 | "this", but do not crash if it is not. RealView | |
10565 | marks unnamed (and thus unused) parameters as | |
10566 | artificial; there is no way to differentiate | |
10567 | the two cases. */ | |
1f704f76 | 10568 | if (type->num_fields () > 0 |
94af9270 | 10569 | && TYPE_FIELD_ARTIFICIAL (type, 0) |
940da03e SM |
10570 | && type->field (0).type ()->code () == TYPE_CODE_PTR |
10571 | && TYPE_CONST (TYPE_TARGET_TYPE (type->field (0).type ()))) | |
d7e74731 | 10572 | buf.puts (" const"); |
94af9270 KS |
10573 | } |
10574 | } | |
10575 | ||
d7e74731 | 10576 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10577 | |
10578 | if (cu->language == language_cplus) | |
34a68019 | 10579 | canonical_name |
322a8516 | 10580 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10581 | objfile); |
34a68019 TT |
10582 | |
10583 | /* If we only computed INTERMEDIATE_NAME, or if | |
10584 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10585 | intern it. */ |
322a8516 | 10586 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10587 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10588 | else |
10589 | name = canonical_name; | |
94af9270 KS |
10590 | } |
10591 | } | |
10592 | ||
10593 | return name; | |
10594 | } | |
10595 | ||
0114d602 DJ |
10596 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10597 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10598 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10599 | not have a name. NAME may either be from a previous call to |
10600 | dwarf2_name or NULL. | |
10601 | ||
9c37b5ae | 10602 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10603 | |
10604 | static const char * | |
15d034d0 | 10605 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10606 | { |
94af9270 KS |
10607 | return dwarf2_compute_name (name, die, cu, 0); |
10608 | } | |
0114d602 | 10609 | |
94af9270 KS |
10610 | /* Construct a physname for the given DIE in CU. NAME may either be |
10611 | from a previous call to dwarf2_name or NULL. The result will be | |
10612 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10613 | name. | |
0114d602 | 10614 | |
9c37b5ae | 10615 | The output string will be canonicalized (if C++). */ |
0114d602 | 10616 | |
94af9270 | 10617 | static const char * |
15d034d0 | 10618 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10619 | { |
5e22e966 | 10620 | struct objfile *objfile = cu->per_objfile->objfile; |
900e11f9 | 10621 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10622 | int need_copy = 1; |
10623 | ||
10624 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10625 | on its own. */ | |
10626 | if (!die_needs_namespace (die, cu)) | |
10627 | return dwarf2_compute_name (name, die, cu, 1); | |
10628 | ||
906bb4c5 TT |
10629 | if (cu->language != language_rust) |
10630 | mangled = dw2_linkage_name (die, cu); | |
900e11f9 JK |
10631 | |
10632 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10633 | has computed. */ | |
791afaa2 | 10634 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10635 | if (mangled != NULL) |
900e11f9 | 10636 | { |
900e11f9 | 10637 | |
d3355e4d | 10638 | if (language_def (cu->language)->store_sym_names_in_linkage_form_p ()) |
59cc4834 JB |
10639 | { |
10640 | /* Do nothing (do not demangle the symbol name). */ | |
10641 | } | |
10642 | else if (cu->language == language_go) | |
a766d390 | 10643 | { |
5e2db402 TT |
10644 | /* This is a lie, but we already lie to the caller new_symbol. |
10645 | new_symbol assumes we return the mangled name. | |
a766d390 | 10646 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
10647 | } |
10648 | else | |
10649 | { | |
0eb876f5 JB |
10650 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10651 | their return type. It is easier for GDB users to search | |
10652 | for such functions as `name(params)' than `long name(params)'. | |
10653 | In such case the minimal symbol names do not match the full | |
10654 | symbol names but for template functions there is never a need | |
10655 | to look up their definition from their declaration so | |
10656 | the only disadvantage remains the minimal symbol variant | |
10657 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10658 | demangled.reset (gdb_demangle (mangled, |
10659 | (DMGL_PARAMS | DMGL_ANSI | |
10660 | | DMGL_RET_DROP))); | |
a766d390 | 10661 | } |
900e11f9 | 10662 | if (demangled) |
791afaa2 | 10663 | canon = demangled.get (); |
900e11f9 JK |
10664 | else |
10665 | { | |
10666 | canon = mangled; | |
10667 | need_copy = 0; | |
10668 | } | |
10669 | } | |
10670 | ||
10671 | if (canon == NULL || check_physname) | |
10672 | { | |
10673 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10674 | ||
10675 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10676 | { | |
10677 | /* It may not mean a bug in GDB. The compiler could also | |
10678 | compute DW_AT_linkage_name incorrectly. But in such case | |
10679 | GDB would need to be bug-to-bug compatible. */ | |
10680 | ||
b98664d3 | 10681 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10682 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10683 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10684 | objfile_name (objfile)); |
900e11f9 JK |
10685 | |
10686 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10687 | is available here - over computed PHYSNAME. It is safer | |
10688 | against both buggy GDB and buggy compilers. */ | |
10689 | ||
10690 | retval = canon; | |
10691 | } | |
10692 | else | |
10693 | { | |
10694 | retval = physname; | |
10695 | need_copy = 0; | |
10696 | } | |
10697 | } | |
10698 | else | |
10699 | retval = canon; | |
10700 | ||
10701 | if (need_copy) | |
be1e3d3e | 10702 | retval = objfile->intern (retval); |
900e11f9 | 10703 | |
900e11f9 | 10704 | return retval; |
0114d602 DJ |
10705 | } |
10706 | ||
74921315 KS |
10707 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10708 | a new symbol for it. | |
10709 | ||
10710 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10711 | ||
10712 | static int | |
10713 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10714 | { | |
10715 | struct attribute *attr; | |
10716 | ||
10717 | /* If the die does not have a name, this is not a namespace | |
10718 | alias. */ | |
10719 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10720 | if (attr != NULL) | |
10721 | { | |
10722 | int num; | |
10723 | struct die_info *d = die; | |
10724 | struct dwarf2_cu *imported_cu = cu; | |
10725 | ||
10726 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10727 | keep inspecting DIEs until we hit the underlying import. */ | |
10728 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10729 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10730 | { | |
10731 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10732 | if (attr == NULL) | |
10733 | break; | |
10734 | ||
10735 | d = follow_die_ref (d, attr, &imported_cu); | |
10736 | if (d->tag != DW_TAG_imported_declaration) | |
10737 | break; | |
10738 | } | |
10739 | ||
10740 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10741 | { | |
b98664d3 | 10742 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10743 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10744 | return 0; |
10745 | } | |
10746 | ||
10747 | if (attr != NULL) | |
10748 | { | |
10749 | struct type *type; | |
0826b30a | 10750 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10751 | |
aa66c379 | 10752 | type = get_die_type_at_offset (sect_off, cu->per_cu, cu->per_objfile); |
78134374 | 10753 | if (type != NULL && type->code () == TYPE_CODE_NAMESPACE) |
74921315 KS |
10754 | { |
10755 | /* This declaration is a global namespace alias. Add | |
10756 | a symbol for it whose type is the aliased namespace. */ | |
10757 | new_symbol (die, type, cu); | |
10758 | return 1; | |
10759 | } | |
10760 | } | |
10761 | } | |
10762 | ||
10763 | return 0; | |
10764 | } | |
10765 | ||
22cee43f | 10766 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10767 | current context for CU. |
22cee43f PMR |
10768 | |
10769 | For Ada, imported declarations can materialize renamings, which *may* be | |
10770 | global. However it is impossible (for now?) in DWARF to distinguish | |
10771 | "external" imported declarations and "static" ones. As all imported | |
10772 | declarations seem to be static in all other languages, make them all CU-wide | |
10773 | global only in Ada. */ | |
10774 | ||
10775 | static struct using_direct ** | |
804d2729 | 10776 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10777 | { |
c24bdb02 KS |
10778 | if (cu->language == language_ada |
10779 | && cu->get_builder ()->outermost_context_p ()) | |
10780 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10781 | else |
c24bdb02 | 10782 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10783 | } |
10784 | ||
27aa8d6a SW |
10785 | /* Read the import statement specified by the given die and record it. */ |
10786 | ||
10787 | static void | |
10788 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10789 | { | |
5e22e966 | 10790 | struct objfile *objfile = cu->per_objfile->objfile; |
27aa8d6a | 10791 | struct attribute *import_attr; |
32019081 | 10792 | struct die_info *imported_die, *child_die; |
de4affc9 | 10793 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10794 | const char *imported_name; |
794684b6 | 10795 | const char *imported_name_prefix; |
13387711 SW |
10796 | const char *canonical_name; |
10797 | const char *import_alias; | |
10798 | const char *imported_declaration = NULL; | |
794684b6 | 10799 | const char *import_prefix; |
eb1e02fd | 10800 | std::vector<const char *> excludes; |
13387711 | 10801 | |
27aa8d6a SW |
10802 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10803 | if (import_attr == NULL) | |
10804 | { | |
b98664d3 | 10805 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10806 | dwarf_tag_name (die->tag)); |
10807 | return; | |
10808 | } | |
10809 | ||
de4affc9 CC |
10810 | imported_cu = cu; |
10811 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10812 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10813 | if (imported_name == NULL) |
10814 | { | |
10815 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10816 | ||
10817 | The import in the following code: | |
10818 | namespace A | |
10819 | { | |
10820 | typedef int B; | |
10821 | } | |
10822 | ||
10823 | int main () | |
10824 | { | |
10825 | using A::B; | |
10826 | B b; | |
10827 | return b; | |
10828 | } | |
10829 | ||
10830 | ... | |
10831 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10832 | <52> DW_AT_decl_file : 1 | |
10833 | <53> DW_AT_decl_line : 6 | |
10834 | <54> DW_AT_import : <0x75> | |
10835 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10836 | <59> DW_AT_name : B | |
10837 | <5b> DW_AT_decl_file : 1 | |
10838 | <5c> DW_AT_decl_line : 2 | |
10839 | <5d> DW_AT_type : <0x6e> | |
10840 | ... | |
10841 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10842 | <76> DW_AT_byte_size : 4 | |
10843 | <77> DW_AT_encoding : 5 (signed) | |
10844 | ||
10845 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10846 | This case will be ignored until the gcc bug is fixed. */ | |
10847 | return; | |
10848 | } | |
10849 | ||
82856980 SW |
10850 | /* Figure out the local name after import. */ |
10851 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10852 | |
794684b6 SW |
10853 | /* Figure out where the statement is being imported to. */ |
10854 | import_prefix = determine_prefix (die, cu); | |
10855 | ||
10856 | /* Figure out what the scope of the imported die is and prepend it | |
10857 | to the name of the imported die. */ | |
de4affc9 | 10858 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10859 | |
f55ee35c JK |
10860 | if (imported_die->tag != DW_TAG_namespace |
10861 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10862 | { |
13387711 SW |
10863 | imported_declaration = imported_name; |
10864 | canonical_name = imported_name_prefix; | |
794684b6 | 10865 | } |
13387711 | 10866 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10867 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10868 | imported_name_prefix, |
10869 | (cu->language == language_d ? "." : "::"), | |
10870 | imported_name, (char *) NULL); | |
13387711 SW |
10871 | else |
10872 | canonical_name = imported_name; | |
794684b6 | 10873 | |
32019081 JK |
10874 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10875 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10876 | child_die = child_die->sibling) |
32019081 JK |
10877 | { |
10878 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10879 | represented by an imported module entry with an import attribute | |
10880 | referring to the module and owned entries corresponding to those | |
10881 | entities that are renamed as part of being imported. */ | |
10882 | ||
10883 | if (child_die->tag != DW_TAG_imported_declaration) | |
10884 | { | |
b98664d3 | 10885 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10886 | "- DIE at %s [in module %s]"), |
10887 | sect_offset_str (child_die->sect_off), | |
10888 | objfile_name (objfile)); | |
32019081 JK |
10889 | continue; |
10890 | } | |
10891 | ||
10892 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10893 | if (import_attr == NULL) | |
10894 | { | |
b98664d3 | 10895 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10896 | dwarf_tag_name (child_die->tag)); |
10897 | continue; | |
10898 | } | |
10899 | ||
10900 | imported_cu = cu; | |
10901 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10902 | &imported_cu); | |
10903 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10904 | if (imported_name == NULL) | |
10905 | { | |
b98664d3 | 10906 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10907 | "imported name - DIE at %s [in module %s]"), |
10908 | sect_offset_str (child_die->sect_off), | |
10909 | objfile_name (objfile)); | |
32019081 JK |
10910 | continue; |
10911 | } | |
10912 | ||
eb1e02fd | 10913 | excludes.push_back (imported_name); |
32019081 JK |
10914 | |
10915 | process_die (child_die, cu); | |
10916 | } | |
10917 | ||
804d2729 | 10918 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10919 | import_prefix, |
10920 | canonical_name, | |
10921 | import_alias, | |
10922 | imported_declaration, | |
10923 | excludes, | |
10924 | 0, | |
10925 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10926 | } |
10927 | ||
5230b05a WT |
10928 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10929 | types, but gives them a size of zero. Starting with version 14, | |
10930 | ICC is compatible with GCC. */ | |
10931 | ||
9068261f | 10932 | static bool |
5230b05a WT |
10933 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10934 | { | |
10935 | if (!cu->checked_producer) | |
10936 | check_producer (cu); | |
10937 | ||
10938 | return cu->producer_is_icc_lt_14; | |
10939 | } | |
10940 | ||
eb77c9df AB |
10941 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10942 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10943 | which says that void functions should not have a DW_AT_type. */ | |
10944 | ||
10945 | static bool | |
10946 | producer_is_icc (struct dwarf2_cu *cu) | |
10947 | { | |
10948 | if (!cu->checked_producer) | |
10949 | check_producer (cu); | |
10950 | ||
10951 | return cu->producer_is_icc; | |
10952 | } | |
10953 | ||
1b80a9fa JK |
10954 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
10955 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
10956 | this, it was first present in GCC release 4.3.0. */ | |
10957 | ||
9068261f | 10958 | static bool |
1b80a9fa JK |
10959 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
10960 | { | |
10961 | if (!cu->checked_producer) | |
10962 | check_producer (cu); | |
10963 | ||
10964 | return cu->producer_is_gcc_lt_4_3; | |
10965 | } | |
10966 | ||
d721ba37 PA |
10967 | static file_and_directory |
10968 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 10969 | { |
d721ba37 PA |
10970 | file_and_directory res; |
10971 | ||
9291a0cd TT |
10972 | /* Find the filename. Do not use dwarf2_name here, since the filename |
10973 | is not a source language identifier. */ | |
d721ba37 PA |
10974 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
10975 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 10976 | |
d721ba37 PA |
10977 | if (res.comp_dir == NULL |
10978 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
10979 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 10980 | { |
d721ba37 PA |
10981 | res.comp_dir_storage = ldirname (res.name); |
10982 | if (!res.comp_dir_storage.empty ()) | |
10983 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 10984 | } |
d721ba37 | 10985 | if (res.comp_dir != NULL) |
9291a0cd TT |
10986 | { |
10987 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
10988 | directory, get rid of it. */ | |
d721ba37 | 10989 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 10990 | |
d721ba37 PA |
10991 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
10992 | res.comp_dir = cp + 1; | |
9291a0cd TT |
10993 | } |
10994 | ||
d721ba37 PA |
10995 | if (res.name == NULL) |
10996 | res.name = "<unknown>"; | |
10997 | ||
10998 | return res; | |
9291a0cd TT |
10999 | } |
11000 | ||
f4dc4d17 DE |
11001 | /* Handle DW_AT_stmt_list for a compilation unit. |
11002 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11003 | COMP_DIR is the compilation directory. LOWPC is passed to |
11004 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11005 | |
11006 | static void | |
11007 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11008 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11009 | { |
976ca316 | 11010 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
2ab95328 | 11011 | struct attribute *attr; |
527f3840 JK |
11012 | struct line_header line_header_local; |
11013 | hashval_t line_header_local_hash; | |
527f3840 JK |
11014 | void **slot; |
11015 | int decode_mapping; | |
2ab95328 | 11016 | |
f4dc4d17 DE |
11017 | gdb_assert (! cu->per_cu->is_debug_types); |
11018 | ||
2ab95328 | 11019 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
11020 | if (attr == NULL) |
11021 | return; | |
11022 | ||
9c541725 | 11023 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
11024 | |
11025 | /* The line header hash table is only created if needed (it exists to | |
11026 | prevent redundant reading of the line table for partial_units). | |
11027 | If we're given a partial_unit, we'll need it. If we're given a | |
11028 | compile_unit, then use the line header hash table if it's already | |
11029 | created, but don't create one just yet. */ | |
11030 | ||
976ca316 | 11031 | if (per_objfile->line_header_hash == NULL |
527f3840 | 11032 | && die->tag == DW_TAG_partial_unit) |
2ab95328 | 11033 | { |
976ca316 | 11034 | per_objfile->line_header_hash |
d15acc42 TT |
11035 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
11036 | line_header_eq_voidp, | |
11037 | free_line_header_voidp, | |
11038 | xcalloc, xfree)); | |
527f3840 | 11039 | } |
2ab95328 | 11040 | |
9c541725 | 11041 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11042 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11043 | line_header_local_hash = line_header_hash (&line_header_local); | |
976ca316 | 11044 | if (per_objfile->line_header_hash != NULL) |
527f3840 | 11045 | { |
976ca316 | 11046 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
11047 | &line_header_local, |
11048 | line_header_local_hash, NO_INSERT); | |
11049 | ||
11050 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11051 | is not present in *SLOT (since if there is something in *SLOT then | |
11052 | it will be for a partial_unit). */ | |
11053 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11054 | { |
527f3840 | 11055 | gdb_assert (*slot != NULL); |
9a3c8263 | 11056 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11057 | return; |
dee91e82 | 11058 | } |
2ab95328 | 11059 | } |
527f3840 JK |
11060 | |
11061 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11062 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11063 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11064 | if (lh == NULL) | |
527f3840 | 11065 | return; |
4c8aa72d PA |
11066 | |
11067 | cu->line_header = lh.release (); | |
11068 | cu->line_header_die_owner = die; | |
527f3840 | 11069 | |
976ca316 | 11070 | if (per_objfile->line_header_hash == NULL) |
527f3840 JK |
11071 | slot = NULL; |
11072 | else | |
11073 | { | |
976ca316 | 11074 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
11075 | &line_header_local, |
11076 | line_header_local_hash, INSERT); | |
11077 | gdb_assert (slot != NULL); | |
11078 | } | |
11079 | if (slot != NULL && *slot == NULL) | |
11080 | { | |
11081 | /* This newly decoded line number information unit will be owned | |
11082 | by line_header_hash hash table. */ | |
11083 | *slot = cu->line_header; | |
4c8aa72d | 11084 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11085 | } |
11086 | else | |
11087 | { | |
11088 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11089 | may be already used by multiple CUs. Create only temporary decoded | |
11090 | line_header for this CU - it may happen at most once for each line | |
11091 | number information unit. And if we're not using line_header_hash | |
11092 | then this is what we want as well. */ | |
11093 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11094 | } |
11095 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11096 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11097 | decode_mapping); | |
fff8551c | 11098 | |
2ab95328 TT |
11099 | } |
11100 | ||
95554aad | 11101 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11102 | |
c906108c | 11103 | static void |
e7c27a73 | 11104 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11105 | { |
976ca316 SM |
11106 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
11107 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 11108 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 11109 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11110 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11111 | struct attribute *attr; | |
c906108c | 11112 | struct die_info *child_die; |
e142c38c | 11113 | CORE_ADDR baseaddr; |
6e70227d | 11114 | |
380618d6 | 11115 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 11116 | baseaddr = objfile->text_section_offset (); |
c906108c | 11117 | |
fae299cd | 11118 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11119 | |
11120 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11121 | from finish_block. */ | |
2acceee2 | 11122 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11123 | lowpc = highpc; |
3e29f34a | 11124 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11125 | |
d721ba37 | 11126 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11127 | |
f4b8a18d KW |
11128 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11129 | standardised yet. As a workaround for the language detection we fall | |
11130 | back to the DW_AT_producer string. */ | |
11131 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11132 | cu->language = language_opencl; | |
11133 | ||
3019eac3 DE |
11134 | /* Similar hack for Go. */ |
11135 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11136 | set_cu_language (DW_LANG_Go, cu); | |
11137 | ||
c24bdb02 | 11138 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11139 | |
11140 | /* Decode line number information if present. We do this before | |
11141 | processing child DIEs, so that the line header table is available | |
11142 | for DW_AT_decl_file. */ | |
d721ba37 | 11143 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11144 | |
11145 | /* Process all dies in compilation unit. */ | |
11146 | if (die->child != NULL) | |
11147 | { | |
11148 | child_die = die->child; | |
11149 | while (child_die && child_die->tag) | |
11150 | { | |
11151 | process_die (child_die, cu); | |
436c571c | 11152 | child_die = child_die->sibling; |
3019eac3 DE |
11153 | } |
11154 | } | |
11155 | ||
11156 | /* Decode macro information, if present. Dwarf 2 macro information | |
11157 | refers to information in the line number info statement program | |
11158 | header, so we can only read it if we've read the header | |
11159 | successfully. */ | |
0af92d60 JK |
11160 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11161 | if (attr == NULL) | |
11162 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11163 | if (attr && cu->line_header) |
11164 | { | |
11165 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11166 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11167 | |
43f3e411 | 11168 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11169 | } |
11170 | else | |
11171 | { | |
11172 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11173 | if (attr && cu->line_header) | |
11174 | { | |
11175 | unsigned int macro_offset = DW_UNSND (attr); | |
11176 | ||
43f3e411 | 11177 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11178 | } |
11179 | } | |
3019eac3 DE |
11180 | } |
11181 | ||
c24bdb02 KS |
11182 | void |
11183 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11184 | { |
f4dc4d17 DE |
11185 | struct type_unit_group *tu_group; |
11186 | int first_time; | |
3019eac3 | 11187 | struct attribute *attr; |
9c541725 | 11188 | unsigned int i; |
0186c6a7 | 11189 | struct signatured_type *sig_type; |
3019eac3 | 11190 | |
f4dc4d17 | 11191 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11192 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11193 | |
c24bdb02 | 11194 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11195 | |
f4dc4d17 | 11196 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11197 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11198 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11199 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11200 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11201 | |
11202 | /* If we've already processed this stmt_list there's no real need to | |
11203 | do it again, we could fake it and just recreate the part we need | |
11204 | (file name,index -> symtab mapping). If data shows this optimization | |
11205 | is useful we can do it then. */ | |
8adb8487 TT |
11206 | type_unit_group_unshareable *tug_unshare |
11207 | = per_objfile->get_type_unit_group_unshareable (tu_group); | |
11208 | first_time = tug_unshare->compunit_symtab == NULL; | |
f4dc4d17 DE |
11209 | |
11210 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11211 | debug info. */ | |
fff8551c | 11212 | line_header_up lh; |
f4dc4d17 | 11213 | if (attr != NULL) |
3019eac3 | 11214 | { |
9c541725 | 11215 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 11216 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11217 | } |
11218 | if (lh == NULL) | |
11219 | { | |
11220 | if (first_time) | |
c24bdb02 | 11221 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11222 | else |
11223 | { | |
8adb8487 | 11224 | gdb_assert (tug_unshare->symtabs == NULL); |
c24bdb02 | 11225 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11226 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11227 | m_builder.reset (new struct buildsym_compunit |
11228 | (COMPUNIT_OBJFILE (cust), "", | |
11229 | COMPUNIT_DIRNAME (cust), | |
11230 | compunit_language (cust), | |
11231 | 0, cust)); | |
770479f2 | 11232 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11233 | } |
f4dc4d17 | 11234 | return; |
3019eac3 DE |
11235 | } |
11236 | ||
c24bdb02 KS |
11237 | line_header = lh.release (); |
11238 | line_header_die_owner = die; | |
3019eac3 | 11239 | |
f4dc4d17 DE |
11240 | if (first_time) |
11241 | { | |
c24bdb02 | 11242 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11243 | |
1fd60fc0 DE |
11244 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11245 | still initializing it, and our caller (a few levels up) | |
11246 | process_full_type_unit still needs to know if this is the first | |
11247 | time. */ | |
11248 | ||
8adb8487 | 11249 | tug_unshare->symtabs |
4ac93832 TT |
11250 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, |
11251 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 11252 | |
7ba99d21 AT |
11253 | auto &file_names = line_header->file_names (); |
11254 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11255 | { |
7ba99d21 | 11256 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11257 | dwarf2_start_subfile (this, fe.name, |
11258 | fe.include_dir (line_header)); | |
11259 | buildsym_compunit *b = get_builder (); | |
11260 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11261 | { |
4c8aa72d PA |
11262 | /* NOTE: start_subfile will recognize when it's been |
11263 | passed a file it has already seen. So we can't | |
11264 | assume there's a simple mapping from | |
11265 | cu->line_header->file_names to subfiles, plus | |
11266 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11267 | b->get_current_subfile ()->symtab |
11268 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11269 | } |
11270 | ||
c24bdb02 | 11271 | fe.symtab = b->get_current_subfile ()->symtab; |
8adb8487 | 11272 | tug_unshare->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11273 | } |
11274 | } | |
11275 | else | |
3019eac3 | 11276 | { |
c24bdb02 | 11277 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11278 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11279 | m_builder.reset (new struct buildsym_compunit |
11280 | (COMPUNIT_OBJFILE (cust), "", | |
11281 | COMPUNIT_DIRNAME (cust), | |
11282 | compunit_language (cust), | |
11283 | 0, cust)); | |
770479f2 | 11284 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11285 | |
7ba99d21 AT |
11286 | auto &file_names = line_header->file_names (); |
11287 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11288 | { |
7ba99d21 | 11289 | file_entry &fe = file_names[i]; |
8adb8487 | 11290 | fe.symtab = tug_unshare->symtabs[i]; |
f4dc4d17 | 11291 | } |
3019eac3 DE |
11292 | } |
11293 | ||
f4dc4d17 DE |
11294 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11295 | so they don't have a "real" (so to speak) symtab anyway. | |
11296 | There is later code that will assign the main symtab to all symbols | |
11297 | that don't have one. We need to handle the case of a symbol with a | |
11298 | missing symtab (DW_AT_decl_file) anyway. */ | |
11299 | } | |
3019eac3 | 11300 | |
f4dc4d17 DE |
11301 | /* Process DW_TAG_type_unit. |
11302 | For TUs we want to skip the first top level sibling if it's not the | |
11303 | actual type being defined by this TU. In this case the first top | |
11304 | level sibling is there to provide context only. */ | |
3019eac3 | 11305 | |
f4dc4d17 DE |
11306 | static void |
11307 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11308 | { | |
11309 | struct die_info *child_die; | |
3019eac3 | 11310 | |
f4dc4d17 DE |
11311 | prepare_one_comp_unit (cu, die, language_minimal); |
11312 | ||
11313 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11314 | We do this before processing child DIEs, so that the line header table | |
11315 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11316 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11317 | |
11318 | if (die->child != NULL) | |
11319 | { | |
11320 | child_die = die->child; | |
11321 | while (child_die && child_die->tag) | |
11322 | { | |
11323 | process_die (child_die, cu); | |
436c571c | 11324 | child_die = child_die->sibling; |
f4dc4d17 DE |
11325 | } |
11326 | } | |
3019eac3 DE |
11327 | } |
11328 | \f | |
80626a55 DE |
11329 | /* DWO/DWP files. |
11330 | ||
11331 | http://gcc.gnu.org/wiki/DebugFission | |
11332 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11333 | ||
11334 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11335 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11336 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11337 | |
11338 | static hashval_t | |
11339 | hash_dwo_file (const void *item) | |
11340 | { | |
9a3c8263 | 11341 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11342 | hashval_t hash; |
3019eac3 | 11343 | |
a2ce51a0 DE |
11344 | hash = htab_hash_string (dwo_file->dwo_name); |
11345 | if (dwo_file->comp_dir != NULL) | |
11346 | hash += htab_hash_string (dwo_file->comp_dir); | |
11347 | return hash; | |
3019eac3 DE |
11348 | } |
11349 | ||
11350 | static int | |
11351 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11352 | { | |
9a3c8263 SM |
11353 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11354 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11355 | |
a2ce51a0 DE |
11356 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11357 | return 0; | |
11358 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11359 | return lhs->comp_dir == rhs->comp_dir; | |
11360 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11361 | } |
11362 | ||
11363 | /* Allocate a hash table for DWO files. */ | |
11364 | ||
51ac9db5 | 11365 | static htab_up |
298e9637 | 11366 | allocate_dwo_file_hash_table () |
3019eac3 | 11367 | { |
51ac9db5 SM |
11368 | auto delete_dwo_file = [] (void *item) |
11369 | { | |
11370 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11371 | ||
11372 | delete dwo_file; | |
11373 | }; | |
11374 | ||
bc68fb19 TT |
11375 | return htab_up (htab_create_alloc (41, |
11376 | hash_dwo_file, | |
11377 | eq_dwo_file, | |
11378 | delete_dwo_file, | |
11379 | xcalloc, xfree)); | |
3019eac3 DE |
11380 | } |
11381 | ||
80626a55 DE |
11382 | /* Lookup DWO file DWO_NAME. */ |
11383 | ||
11384 | static void ** | |
976ca316 | 11385 | lookup_dwo_file_slot (dwarf2_per_objfile *per_objfile, |
ed2dc618 SM |
11386 | const char *dwo_name, |
11387 | const char *comp_dir) | |
80626a55 DE |
11388 | { |
11389 | struct dwo_file find_entry; | |
11390 | void **slot; | |
11391 | ||
976ca316 SM |
11392 | if (per_objfile->per_bfd->dwo_files == NULL) |
11393 | per_objfile->per_bfd->dwo_files = allocate_dwo_file_hash_table (); | |
80626a55 | 11394 | |
0ac5b59e DE |
11395 | find_entry.dwo_name = dwo_name; |
11396 | find_entry.comp_dir = comp_dir; | |
976ca316 | 11397 | slot = htab_find_slot (per_objfile->per_bfd->dwo_files.get (), &find_entry, |
51ac9db5 | 11398 | INSERT); |
80626a55 DE |
11399 | |
11400 | return slot; | |
11401 | } | |
11402 | ||
3019eac3 DE |
11403 | static hashval_t |
11404 | hash_dwo_unit (const void *item) | |
11405 | { | |
9a3c8263 | 11406 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11407 | |
11408 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11409 | return dwo_unit->signature; | |
11410 | } | |
11411 | ||
11412 | static int | |
11413 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11414 | { | |
9a3c8263 SM |
11415 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11416 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11417 | |
11418 | /* The signature is assumed to be unique within the DWO file. | |
11419 | So while object file CU dwo_id's always have the value zero, | |
11420 | that's OK, assuming each object file DWO file has only one CU, | |
11421 | and that's the rule for now. */ | |
11422 | return lhs->signature == rhs->signature; | |
11423 | } | |
11424 | ||
11425 | /* Allocate a hash table for DWO CUs,TUs. | |
11426 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11427 | ||
b0b6a987 | 11428 | static htab_up |
298e9637 | 11429 | allocate_dwo_unit_table () |
3019eac3 DE |
11430 | { |
11431 | /* Start out with a pretty small number. | |
11432 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11433 | return htab_up (htab_create_alloc (3, |
11434 | hash_dwo_unit, | |
11435 | eq_dwo_unit, | |
11436 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11437 | } |
11438 | ||
19c3d4c9 | 11439 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11440 | |
11441 | static void | |
19c3d4c9 DE |
11442 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11443 | const gdb_byte *info_ptr, | |
11444 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11445 | struct dwo_file *dwo_file, |
11446 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11447 | { |
11448 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11449 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11450 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11451 | |
a084a2a6 AT |
11452 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11453 | if (!signature.has_value ()) | |
3019eac3 | 11454 | { |
b98664d3 | 11455 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11456 | " its dwo_id [in module %s]"), |
9d8780f0 | 11457 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11458 | return; |
11459 | } | |
11460 | ||
3019eac3 | 11461 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11462 | dwo_unit->signature = *signature; |
8a0459fd | 11463 | dwo_unit->section = section; |
9c541725 | 11464 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11465 | dwo_unit->length = cu->per_cu->length; |
11466 | ||
b4f54984 | 11467 | if (dwarf_read_debug) |
9d8780f0 SM |
11468 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11469 | sect_offset_str (sect_off), | |
9c541725 | 11470 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11471 | } |
11472 | ||
33c5cd75 | 11473 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11474 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11475 | |
33c5cd75 | 11476 | static void |
976ca316 | 11477 | create_cus_hash_table (dwarf2_per_objfile *per_objfile, |
18a8505e | 11478 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11479 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 | 11480 | { |
976ca316 SM |
11481 | struct objfile *objfile = per_objfile->objfile; |
11482 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
d521ce57 | 11483 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11484 | |
96b79293 | 11485 | section.read (objfile); |
33c5cd75 | 11486 | info_ptr = section.buffer; |
3019eac3 DE |
11487 | |
11488 | if (info_ptr == NULL) | |
33c5cd75 | 11489 | return; |
3019eac3 | 11490 | |
b4f54984 | 11491 | if (dwarf_read_debug) |
19c3d4c9 DE |
11492 | { |
11493 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
96b79293 TT |
11494 | section.get_name (), |
11495 | section.get_file_name ()); | |
19c3d4c9 | 11496 | } |
3019eac3 | 11497 | |
33c5cd75 | 11498 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11499 | while (info_ptr < end_ptr) |
11500 | { | |
11501 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11502 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11503 | struct dwo_unit *dwo_unit; |
11504 | void **slot; | |
11505 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11506 | |
11507 | memset (&per_cu, 0, sizeof (per_cu)); | |
1859c670 | 11508 | per_cu.per_bfd = per_bfd; |
3019eac3 | 11509 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11510 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11511 | per_cu.section = §ion; | |
11512 | ||
976ca316 | 11513 | cutu_reader reader (&per_cu, per_objfile, cu, &dwo_file); |
c0ab21c2 TT |
11514 | if (!reader.dummy_p) |
11515 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11516 | &dwo_file, &read_unit); |
33c5cd75 DB |
11517 | info_ptr += per_cu.length; |
11518 | ||
11519 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11520 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11521 | continue; |
3019eac3 | 11522 | |
33c5cd75 | 11523 | if (cus_htab == NULL) |
298e9637 | 11524 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11525 | |
1859c670 | 11526 | dwo_unit = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 11527 | struct dwo_unit); |
c0ab21c2 | 11528 | *dwo_unit = read_unit; |
b0b6a987 | 11529 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11530 | gdb_assert (slot != NULL); |
11531 | if (*slot != NULL) | |
19c3d4c9 | 11532 | { |
33c5cd75 DB |
11533 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11534 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11535 | |
b98664d3 | 11536 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11537 | " the entry at offset %s, signature %s"), |
11538 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11539 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11540 | } |
33c5cd75 | 11541 | *slot = (void *)dwo_unit; |
3019eac3 | 11542 | } |
3019eac3 DE |
11543 | } |
11544 | ||
80626a55 DE |
11545 | /* DWP file .debug_{cu,tu}_index section format: |
11546 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
d2854d8d CT |
11547 | [ref: http://dwarfstd.org/doc/DWARF5.pdf, sect 7.3.5 "DWARF Package Files"] |
11548 | ||
11549 | DWP Versions 1 & 2 are older, pre-standard format versions. The first | |
11550 | officially standard DWP format was published with DWARF v5 and is called | |
11551 | Version 5. There are no versions 3 or 4. | |
80626a55 | 11552 | |
d2415c6c DE |
11553 | DWP Version 1: |
11554 | ||
80626a55 DE |
11555 | Both index sections have the same format, and serve to map a 64-bit |
11556 | signature to a set of section numbers. Each section begins with a header, | |
11557 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11558 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11559 | aligned at 8-byte boundaries in the file. | |
11560 | ||
d2415c6c DE |
11561 | The index section header consists of: |
11562 | ||
11563 | V, 32 bit version number | |
11564 | -, 32 bits unused | |
11565 | N, 32 bit number of compilation units or type units in the index | |
11566 | M, 32 bit number of slots in the hash table | |
80626a55 | 11567 | |
d2415c6c | 11568 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11569 | |
d2415c6c DE |
11570 | The hash table begins at offset 16 in the section, and consists of an array |
11571 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11572 | order of the application binary). Unused slots in the hash table are 0. | |
11573 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11574 | |
d2415c6c DE |
11575 | The parallel table begins immediately after the hash table |
11576 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11577 | array of 32-bit indexes (using the byte order of the application binary), | |
11578 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11579 | table contains a 32-bit index into the pool of section numbers. For unused | |
11580 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11581 | |
73869dc2 DE |
11582 | The pool of section numbers begins immediately following the hash table |
11583 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11584 | section numbers consists of an array of 32-bit words (using the byte order | |
11585 | of the application binary). Each item in the array is indexed starting | |
11586 | from 0. The hash table entry provides the index of the first section | |
11587 | number in the set. Additional section numbers in the set follow, and the | |
11588 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11589 | ||
11590 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11591 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11592 | be the second entry. Other members of the set may follow in any order. | |
11593 | ||
11594 | --- | |
11595 | ||
d2854d8d | 11596 | DWP Versions 2 and 5: |
73869dc2 | 11597 | |
d2854d8d | 11598 | DWP Versions 2 and 5 combine all the .debug_info, etc. sections into one, |
73869dc2 DE |
11599 | and the entries in the index tables are now offsets into these sections. |
11600 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11601 | section. | |
11602 | ||
11603 | Index Section Contents: | |
11604 | Header | |
11605 | Hash Table of Signatures dwp_hash_table.hash_table | |
11606 | Parallel Table of Indices dwp_hash_table.unit_table | |
d2854d8d CT |
11607 | Table of Section Offsets dwp_hash_table.{v2|v5}.{section_ids,offsets} |
11608 | Table of Section Sizes dwp_hash_table.{v2|v5}.sizes | |
73869dc2 DE |
11609 | |
11610 | The index section header consists of: | |
11611 | ||
11612 | V, 32 bit version number | |
11613 | L, 32 bit number of columns in the table of section offsets | |
11614 | N, 32 bit number of compilation units or type units in the index | |
11615 | M, 32 bit number of slots in the hash table | |
11616 | ||
11617 | Numbers are recorded using the byte order of the application binary. | |
11618 | ||
11619 | The hash table has the same format as version 1. | |
11620 | The parallel table of indices has the same format as version 1, | |
11621 | except that the entries are origin-1 indices into the table of sections | |
11622 | offsets and the table of section sizes. | |
11623 | ||
11624 | The table of offsets begins immediately following the parallel table | |
11625 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11626 | a two-dimensional array of 32-bit words (using the byte order of the | |
11627 | application binary), with L columns and N+1 rows, in row-major order. | |
11628 | Each row in the array is indexed starting from 0. The first row provides | |
11629 | a key to the remaining rows: each column in this row provides an identifier | |
11630 | for a debug section, and the offsets in the same column of subsequent rows | |
d2854d8d | 11631 | refer to that section. The section identifiers for Version 2 are: |
73869dc2 DE |
11632 | |
11633 | DW_SECT_INFO 1 .debug_info.dwo | |
11634 | DW_SECT_TYPES 2 .debug_types.dwo | |
11635 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11636 | DW_SECT_LINE 4 .debug_line.dwo | |
11637 | DW_SECT_LOC 5 .debug_loc.dwo | |
11638 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11639 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11640 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11641 | ||
d2854d8d CT |
11642 | The section identifiers for Version 5 are: |
11643 | ||
11644 | DW_SECT_INFO_V5 1 .debug_info.dwo | |
11645 | DW_SECT_RESERVED_V5 2 -- | |
11646 | DW_SECT_ABBREV_V5 3 .debug_abbrev.dwo | |
11647 | DW_SECT_LINE_V5 4 .debug_line.dwo | |
11648 | DW_SECT_LOCLISTS_V5 5 .debug_loclists.dwo | |
11649 | DW_SECT_STR_OFFSETS_V5 6 .debug_str_offsets.dwo | |
11650 | DW_SECT_MACRO_V5 7 .debug_macro.dwo | |
11651 | DW_SECT_RNGLISTS_V5 8 .debug_rnglists.dwo | |
11652 | ||
73869dc2 DE |
11653 | The offsets provided by the CU and TU index sections are the base offsets |
11654 | for the contributions made by each CU or TU to the corresponding section | |
11655 | in the package file. Each CU and TU header contains an abbrev_offset | |
11656 | field, used to find the abbreviations table for that CU or TU within the | |
11657 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11658 | be interpreted as relative to the base offset given in the index section. | |
11659 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11660 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11661 | and offsets into other debug sections obtained from DWARF attributes should | |
11662 | also be interpreted as relative to the corresponding base offset. | |
11663 | ||
11664 | The table of sizes begins immediately following the table of offsets. | |
11665 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11666 | with L columns and N rows, in row-major order. Each row in the array is | |
11667 | indexed starting from 1 (row 0 is shared by the two tables). | |
11668 | ||
11669 | --- | |
11670 | ||
11671 | Hash table lookup is handled the same in version 1 and 2: | |
11672 | ||
11673 | We assume that N and M will not exceed 2^32 - 1. | |
11674 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11675 | ||
d2415c6c DE |
11676 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11677 | in the hash table is located as follows: | |
80626a55 | 11678 | |
d2415c6c DE |
11679 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11680 | the low-order k bits all set to 1. | |
80626a55 | 11681 | |
d2415c6c | 11682 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11683 | |
d2415c6c DE |
11684 | 3) If the hash table entry at index H matches the signature, use that |
11685 | entry. If the hash table entry at index H is unused (all zeroes), | |
11686 | terminate the search: the signature is not present in the table. | |
80626a55 | 11687 | |
d2415c6c | 11688 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11689 | |
d2415c6c | 11690 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11691 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11692 | |
11693 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11694 | .debug_{info,types}.dwo in DWP_FILE. | |
11695 | Returns NULL if there isn't one. | |
11696 | Note: This function processes DWP files only, not DWO files. */ | |
11697 | ||
11698 | static struct dwp_hash_table * | |
976ca316 | 11699 | create_dwp_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11700 | struct dwp_file *dwp_file, int is_debug_types) |
80626a55 | 11701 | { |
976ca316 | 11702 | struct objfile *objfile = per_objfile->objfile; |
400174b1 | 11703 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11704 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11705 | struct dwarf2_section_info *index; |
73869dc2 | 11706 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11707 | struct dwp_hash_table *htab; |
11708 | ||
11709 | if (is_debug_types) | |
11710 | index = &dwp_file->sections.tu_index; | |
11711 | else | |
11712 | index = &dwp_file->sections.cu_index; | |
11713 | ||
96b79293 | 11714 | if (index->empty ()) |
80626a55 | 11715 | return NULL; |
96b79293 | 11716 | index->read (objfile); |
80626a55 DE |
11717 | |
11718 | index_ptr = index->buffer; | |
11719 | index_end = index_ptr + index->size; | |
11720 | ||
d2854d8d CT |
11721 | /* For Version 5, the version is really 2 bytes of data & 2 bytes of padding. |
11722 | For now it's safe to just read 4 bytes (particularly as it's difficult to | |
11723 | tell if you're dealing with Version 5 before you've read the version). */ | |
80626a55 | 11724 | version = read_4_bytes (dbfd, index_ptr); |
73869dc2 | 11725 | index_ptr += 4; |
d2854d8d | 11726 | if (version == 2 || version == 5) |
73869dc2 DE |
11727 | nr_columns = read_4_bytes (dbfd, index_ptr); |
11728 | else | |
11729 | nr_columns = 0; | |
11730 | index_ptr += 4; | |
80626a55 DE |
11731 | nr_units = read_4_bytes (dbfd, index_ptr); |
11732 | index_ptr += 4; | |
11733 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11734 | index_ptr += 4; | |
11735 | ||
d2854d8d | 11736 | if (version != 1 && version != 2 && version != 5) |
80626a55 | 11737 | { |
21aa081e | 11738 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11739 | " [in module %s]"), |
21aa081e | 11740 | pulongest (version), dwp_file->name); |
80626a55 DE |
11741 | } |
11742 | if (nr_slots != (nr_slots & -nr_slots)) | |
11743 | { | |
21aa081e | 11744 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11745 | " is not power of 2 [in module %s]"), |
21aa081e | 11746 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11747 | } |
11748 | ||
976ca316 | 11749 | htab = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwp_hash_table); |
73869dc2 DE |
11750 | htab->version = version; |
11751 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11752 | htab->nr_units = nr_units; |
11753 | htab->nr_slots = nr_slots; | |
11754 | htab->hash_table = index_ptr; | |
11755 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11756 | |
11757 | /* Exit early if the table is empty. */ | |
11758 | if (nr_slots == 0 || nr_units == 0 | |
d2854d8d CT |
11759 | || (version == 2 && nr_columns == 0) |
11760 | || (version == 5 && nr_columns == 0)) | |
73869dc2 DE |
11761 | { |
11762 | /* All must be zero. */ | |
11763 | if (nr_slots != 0 || nr_units != 0 | |
d2854d8d CT |
11764 | || (version == 2 && nr_columns != 0) |
11765 | || (version == 5 && nr_columns != 0)) | |
73869dc2 | 11766 | { |
b98664d3 | 11767 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11768 | " all zero [in modules %s]"), |
11769 | dwp_file->name); | |
11770 | } | |
11771 | return htab; | |
11772 | } | |
11773 | ||
11774 | if (version == 1) | |
11775 | { | |
11776 | htab->section_pool.v1.indices = | |
11777 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11778 | /* It's harder to decide whether the section is too small in v1. | |
11779 | V1 is deprecated anyway so we punt. */ | |
11780 | } | |
d2854d8d | 11781 | else if (version == 2) |
73869dc2 DE |
11782 | { |
11783 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11784 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11785 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11786 | /* Reverse map for error checking. */ |
11787 | int ids_seen[DW_SECT_MAX + 1]; | |
11788 | int i; | |
11789 | ||
11790 | if (nr_columns < 2) | |
11791 | { | |
11792 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11793 | " in section table [in module %s]"), | |
11794 | dwp_file->name); | |
11795 | } | |
11796 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11797 | { | |
11798 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11799 | " in section table [in module %s]"), | |
11800 | dwp_file->name); | |
11801 | } | |
04fd5eed GB |
11802 | memset (ids, 255, sizeof_ids); |
11803 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11804 | for (i = 0; i < nr_columns; ++i) |
11805 | { | |
11806 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11807 | ||
11808 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11809 | { | |
11810 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11811 | " in section table [in module %s]"), | |
11812 | id, dwp_file->name); | |
11813 | } | |
11814 | if (ids_seen[id] != -1) | |
11815 | { | |
11816 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11817 | " id %d in section table [in module %s]"), | |
11818 | id, dwp_file->name); | |
11819 | } | |
11820 | ids_seen[id] = i; | |
11821 | ids[i] = id; | |
11822 | } | |
11823 | /* Must have exactly one info or types section. */ | |
11824 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11825 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11826 | != 1) | |
11827 | { | |
11828 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11829 | " DWO info/types section [in module %s]"), | |
11830 | dwp_file->name); | |
11831 | } | |
11832 | /* Must have an abbrev section. */ | |
11833 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11834 | { | |
11835 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11836 | " section [in module %s]"), | |
11837 | dwp_file->name); | |
11838 | } | |
11839 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11840 | htab->section_pool.v2.sizes = | |
11841 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11842 | * nr_units * nr_columns); | |
11843 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11844 | * nr_units * nr_columns)) | |
11845 | > index_end) | |
11846 | { | |
11847 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11848 | " [in module %s]"), | |
11849 | dwp_file->name); | |
11850 | } | |
11851 | } | |
d2854d8d CT |
11852 | else /* version == 5 */ |
11853 | { | |
11854 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11855 | int *ids = htab->section_pool.v5.section_ids; | |
11856 | size_t sizeof_ids = sizeof (htab->section_pool.v5.section_ids); | |
11857 | /* Reverse map for error checking. */ | |
11858 | int ids_seen[DW_SECT_MAX_V5 + 1]; | |
11859 | ||
11860 | if (nr_columns < 2) | |
11861 | { | |
11862 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11863 | " in section table [in module %s]"), | |
11864 | dwp_file->name); | |
11865 | } | |
11866 | if (nr_columns > MAX_NR_V5_DWO_SECTIONS) | |
11867 | { | |
11868 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11869 | " in section table [in module %s]"), | |
11870 | dwp_file->name); | |
11871 | } | |
11872 | memset (ids, 255, sizeof_ids); | |
11873 | memset (ids_seen, 255, sizeof (ids_seen)); | |
11874 | for (int i = 0; i < nr_columns; ++i) | |
11875 | { | |
11876 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11877 | ||
11878 | if (id < DW_SECT_MIN || id > DW_SECT_MAX_V5) | |
11879 | { | |
11880 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11881 | " in section table [in module %s]"), | |
11882 | id, dwp_file->name); | |
11883 | } | |
11884 | if (ids_seen[id] != -1) | |
11885 | { | |
11886 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11887 | " id %d in section table [in module %s]"), | |
11888 | id, dwp_file->name); | |
11889 | } | |
11890 | ids_seen[id] = i; | |
11891 | ids[i] = id; | |
11892 | } | |
11893 | /* Must have seen an info section. */ | |
11894 | if (ids_seen[DW_SECT_INFO_V5] == -1) | |
11895 | { | |
11896 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11897 | " DWO info/types section [in module %s]"), | |
11898 | dwp_file->name); | |
11899 | } | |
11900 | /* Must have an abbrev section. */ | |
11901 | if (ids_seen[DW_SECT_ABBREV_V5] == -1) | |
11902 | { | |
11903 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11904 | " section [in module %s]"), | |
11905 | dwp_file->name); | |
11906 | } | |
11907 | htab->section_pool.v5.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11908 | htab->section_pool.v5.sizes | |
11909 | = htab->section_pool.v5.offsets + (sizeof (uint32_t) | |
11910 | * nr_units * nr_columns); | |
11911 | if ((htab->section_pool.v5.sizes + (sizeof (uint32_t) | |
11912 | * nr_units * nr_columns)) | |
11913 | > index_end) | |
11914 | { | |
11915 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11916 | " [in module %s]"), | |
11917 | dwp_file->name); | |
11918 | } | |
11919 | } | |
80626a55 DE |
11920 | |
11921 | return htab; | |
11922 | } | |
11923 | ||
11924 | /* Update SECTIONS with the data from SECTP. | |
11925 | ||
11926 | This function is like the other "locate" section routines that are | |
11927 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 11928 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
11929 | |
11930 | The result is non-zero for success, or zero if an error was found. */ | |
11931 | ||
11932 | static int | |
73869dc2 DE |
11933 | locate_v1_virtual_dwo_sections (asection *sectp, |
11934 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11935 | { |
11936 | const struct dwop_section_names *names = &dwop_section_names; | |
11937 | ||
11938 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
11939 | { | |
11940 | /* There can be only one. */ | |
049412e3 | 11941 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11942 | return 0; |
049412e3 | 11943 | sections->abbrev.s.section = sectp; |
fd361982 | 11944 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
11945 | } |
11946 | else if (section_is_p (sectp->name, &names->info_dwo) | |
11947 | || section_is_p (sectp->name, &names->types_dwo)) | |
11948 | { | |
11949 | /* There can be only one. */ | |
049412e3 | 11950 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11951 | return 0; |
049412e3 | 11952 | sections->info_or_types.s.section = sectp; |
fd361982 | 11953 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
11954 | } |
11955 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
11956 | { | |
11957 | /* There can be only one. */ | |
049412e3 | 11958 | if (sections->line.s.section != NULL) |
80626a55 | 11959 | return 0; |
049412e3 | 11960 | sections->line.s.section = sectp; |
fd361982 | 11961 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
11962 | } |
11963 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
11964 | { | |
11965 | /* There can be only one. */ | |
049412e3 | 11966 | if (sections->loc.s.section != NULL) |
80626a55 | 11967 | return 0; |
049412e3 | 11968 | sections->loc.s.section = sectp; |
fd361982 | 11969 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
11970 | } |
11971 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
11972 | { | |
11973 | /* There can be only one. */ | |
049412e3 | 11974 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11975 | return 0; |
049412e3 | 11976 | sections->macinfo.s.section = sectp; |
fd361982 | 11977 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
11978 | } |
11979 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
11980 | { | |
11981 | /* There can be only one. */ | |
049412e3 | 11982 | if (sections->macro.s.section != NULL) |
80626a55 | 11983 | return 0; |
049412e3 | 11984 | sections->macro.s.section = sectp; |
fd361982 | 11985 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
11986 | } |
11987 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
11988 | { | |
11989 | /* There can be only one. */ | |
049412e3 | 11990 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11991 | return 0; |
049412e3 | 11992 | sections->str_offsets.s.section = sectp; |
fd361982 | 11993 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11994 | } |
11995 | else | |
11996 | { | |
11997 | /* No other kind of section is valid. */ | |
11998 | return 0; | |
11999 | } | |
12000 | ||
12001 | return 1; | |
12002 | } | |
12003 | ||
73869dc2 DE |
12004 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12005 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12006 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12007 | This is for DWP version 1 files. */ | |
80626a55 DE |
12008 | |
12009 | static struct dwo_unit * | |
976ca316 | 12010 | create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12011 | struct dwp_file *dwp_file, |
73869dc2 DE |
12012 | uint32_t unit_index, |
12013 | const char *comp_dir, | |
12014 | ULONGEST signature, int is_debug_types) | |
80626a55 | 12015 | { |
73869dc2 DE |
12016 | const struct dwp_hash_table *dwp_htab = |
12017 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12018 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
12019 | const char *kind = is_debug_types ? "TU" : "CU"; |
12020 | struct dwo_file *dwo_file; | |
12021 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12022 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12023 | void **dwo_file_slot; |
80626a55 DE |
12024 | int i; |
12025 | ||
73869dc2 DE |
12026 | gdb_assert (dwp_file->version == 1); |
12027 | ||
b4f54984 | 12028 | if (dwarf_read_debug) |
80626a55 | 12029 | { |
73869dc2 | 12030 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 12031 | kind, |
73869dc2 | 12032 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
12033 | dwp_file->name); |
12034 | } | |
12035 | ||
19ac8c2e | 12036 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12037 | Put a limit on the number of sections we look for so that bad data |
12038 | doesn't cause us to loop forever. */ | |
12039 | ||
73869dc2 | 12040 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12041 | (1 /* .debug_info or .debug_types */ \ |
12042 | + 1 /* .debug_abbrev */ \ | |
12043 | + 1 /* .debug_line */ \ | |
12044 | + 1 /* .debug_loc */ \ | |
12045 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12046 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12047 | + 1 /* trailing zero */) |
12048 | ||
12049 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12050 | |
73869dc2 | 12051 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12052 | { |
12053 | asection *sectp; | |
12054 | uint32_t section_nr = | |
12055 | read_4_bytes (dbfd, | |
73869dc2 DE |
12056 | dwp_htab->section_pool.v1.indices |
12057 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12058 | |
12059 | if (section_nr == 0) | |
12060 | break; | |
12061 | if (section_nr >= dwp_file->num_sections) | |
12062 | { | |
12063 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12064 | " [in module %s]"), | |
12065 | dwp_file->name); | |
12066 | } | |
12067 | ||
12068 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12069 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12070 | { |
12071 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12072 | " [in module %s]"), | |
12073 | dwp_file->name); | |
12074 | } | |
12075 | } | |
12076 | ||
12077 | if (i < 2 | |
96b79293 TT |
12078 | || sections.info_or_types.empty () |
12079 | || sections.abbrev.empty ()) | |
80626a55 DE |
12080 | { |
12081 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12082 | " [in module %s]"), | |
12083 | dwp_file->name); | |
12084 | } | |
73869dc2 | 12085 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12086 | { |
12087 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12088 | " [in module %s]"), | |
12089 | dwp_file->name); | |
12090 | } | |
12091 | ||
12092 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12093 | have dwo_unit "live" in that. At least for now. | |
12094 | ||
12095 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12096 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12097 | file, we can combine them back into a virtual DWO file to save space |
12098 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12099 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12100 | ||
791afaa2 TT |
12101 | std::string virtual_dwo_name = |
12102 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
12103 | sections.abbrev.get_id (), |
12104 | sections.line.get_id (), | |
12105 | sections.loc.get_id (), | |
12106 | sections.str_offsets.get_id ()); | |
80626a55 | 12107 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12108 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12109 | comp_dir); |
80626a55 DE |
12110 | /* Create one if necessary. */ |
12111 | if (*dwo_file_slot == NULL) | |
12112 | { | |
b4f54984 | 12113 | if (dwarf_read_debug) |
80626a55 DE |
12114 | { |
12115 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12116 | virtual_dwo_name.c_str ()); |
80626a55 | 12117 | } |
51ac9db5 | 12118 | dwo_file = new struct dwo_file; |
976ca316 | 12119 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
0ac5b59e | 12120 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12121 | dwo_file->sections.abbrev = sections.abbrev; |
12122 | dwo_file->sections.line = sections.line; | |
12123 | dwo_file->sections.loc = sections.loc; | |
12124 | dwo_file->sections.macinfo = sections.macinfo; | |
12125 | dwo_file->sections.macro = sections.macro; | |
12126 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12127 | /* The "str" section is global to the entire DWP file. */ | |
12128 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12129 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12130 | there's no need to record it in dwo_file. |
12131 | Also, we can't simply record type sections in dwo_file because | |
12132 | we record a pointer into the vector in dwo_unit. As we collect more | |
12133 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12134 | for it, invalidating all copies of pointers into the previous |
12135 | contents. */ | |
80626a55 DE |
12136 | *dwo_file_slot = dwo_file; |
12137 | } | |
12138 | else | |
12139 | { | |
b4f54984 | 12140 | if (dwarf_read_debug) |
80626a55 DE |
12141 | { |
12142 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12143 | virtual_dwo_name.c_str ()); |
80626a55 | 12144 | } |
9a3c8263 | 12145 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12146 | } |
80626a55 | 12147 | |
976ca316 | 12148 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
80626a55 DE |
12149 | dwo_unit->dwo_file = dwo_file; |
12150 | dwo_unit->signature = signature; | |
8d749320 | 12151 | dwo_unit->section = |
976ca316 | 12152 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
8a0459fd | 12153 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12154 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12155 | |
12156 | return dwo_unit; | |
12157 | } | |
12158 | ||
d2854d8d CT |
12159 | /* Subroutine of create_dwo_unit_in_dwp_v2 and create_dwo_unit_in_dwp_v5 to |
12160 | simplify them. Given a pointer to the containing section SECTION, and | |
12161 | OFFSET,SIZE of the piece within that section used by a TU/CU, return a | |
12162 | virtual section of just that piece. */ | |
73869dc2 DE |
12163 | |
12164 | static struct dwarf2_section_info | |
d2854d8d CT |
12165 | create_dwp_v2_or_v5_section (dwarf2_per_objfile *per_objfile, |
12166 | struct dwarf2_section_info *section, | |
12167 | bfd_size_type offset, bfd_size_type size) | |
73869dc2 DE |
12168 | { |
12169 | struct dwarf2_section_info result; | |
12170 | asection *sectp; | |
12171 | ||
12172 | gdb_assert (section != NULL); | |
12173 | gdb_assert (!section->is_virtual); | |
12174 | ||
12175 | memset (&result, 0, sizeof (result)); | |
12176 | result.s.containing_section = section; | |
dc4ccb6f | 12177 | result.is_virtual = true; |
73869dc2 DE |
12178 | |
12179 | if (size == 0) | |
12180 | return result; | |
12181 | ||
96b79293 | 12182 | sectp = section->get_bfd_section (); |
73869dc2 DE |
12183 | |
12184 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12185 | bounds of the real section. This is a pretty-rare event, so just | |
12186 | flag an error (easier) instead of a warning and trying to cope. */ | |
12187 | if (sectp == NULL | |
fd361982 | 12188 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 12189 | { |
d2854d8d | 12190 | error (_("Dwarf Error: Bad DWP V2 or V5 section info, doesn't fit" |
73869dc2 | 12191 | " in section %s [in module %s]"), |
fd361982 | 12192 | sectp ? bfd_section_name (sectp) : "<unknown>", |
976ca316 | 12193 | objfile_name (per_objfile->objfile)); |
73869dc2 DE |
12194 | } |
12195 | ||
12196 | result.virtual_offset = offset; | |
12197 | result.size = size; | |
12198 | return result; | |
12199 | } | |
12200 | ||
12201 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12202 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12203 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12204 | This is for DWP version 2 files. */ | |
12205 | ||
12206 | static struct dwo_unit * | |
976ca316 | 12207 | create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12208 | struct dwp_file *dwp_file, |
73869dc2 DE |
12209 | uint32_t unit_index, |
12210 | const char *comp_dir, | |
12211 | ULONGEST signature, int is_debug_types) | |
12212 | { | |
73869dc2 DE |
12213 | const struct dwp_hash_table *dwp_htab = |
12214 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12215 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12216 | const char *kind = is_debug_types ? "TU" : "CU"; |
12217 | struct dwo_file *dwo_file; | |
12218 | struct dwo_unit *dwo_unit; | |
d2854d8d | 12219 | struct virtual_v2_or_v5_dwo_sections sections; |
73869dc2 | 12220 | void **dwo_file_slot; |
73869dc2 DE |
12221 | int i; |
12222 | ||
12223 | gdb_assert (dwp_file->version == 2); | |
12224 | ||
b4f54984 | 12225 | if (dwarf_read_debug) |
73869dc2 DE |
12226 | { |
12227 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12228 | kind, | |
12229 | pulongest (unit_index), hex_string (signature), | |
12230 | dwp_file->name); | |
12231 | } | |
12232 | ||
12233 | /* Fetch the section offsets of this DWO unit. */ | |
12234 | ||
12235 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12236 | |
12237 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12238 | { | |
12239 | uint32_t offset = read_4_bytes (dbfd, | |
12240 | dwp_htab->section_pool.v2.offsets | |
12241 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12242 | + i) | |
12243 | * sizeof (uint32_t))); | |
12244 | uint32_t size = read_4_bytes (dbfd, | |
12245 | dwp_htab->section_pool.v2.sizes | |
12246 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12247 | + i) | |
12248 | * sizeof (uint32_t))); | |
12249 | ||
12250 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12251 | { | |
12252 | case DW_SECT_INFO: | |
12253 | case DW_SECT_TYPES: | |
12254 | sections.info_or_types_offset = offset; | |
12255 | sections.info_or_types_size = size; | |
12256 | break; | |
12257 | case DW_SECT_ABBREV: | |
12258 | sections.abbrev_offset = offset; | |
12259 | sections.abbrev_size = size; | |
12260 | break; | |
12261 | case DW_SECT_LINE: | |
12262 | sections.line_offset = offset; | |
12263 | sections.line_size = size; | |
12264 | break; | |
12265 | case DW_SECT_LOC: | |
12266 | sections.loc_offset = offset; | |
12267 | sections.loc_size = size; | |
12268 | break; | |
12269 | case DW_SECT_STR_OFFSETS: | |
12270 | sections.str_offsets_offset = offset; | |
12271 | sections.str_offsets_size = size; | |
12272 | break; | |
12273 | case DW_SECT_MACINFO: | |
12274 | sections.macinfo_offset = offset; | |
12275 | sections.macinfo_size = size; | |
12276 | break; | |
12277 | case DW_SECT_MACRO: | |
12278 | sections.macro_offset = offset; | |
12279 | sections.macro_size = size; | |
12280 | break; | |
12281 | } | |
12282 | } | |
12283 | ||
12284 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12285 | have dwo_unit "live" in that. At least for now. | |
12286 | ||
12287 | The DWP file can be made up of a random collection of CUs and TUs. | |
12288 | However, for each CU + set of TUs that came from the same original DWO | |
12289 | file, we can combine them back into a virtual DWO file to save space | |
12290 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12291 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12292 | ||
791afaa2 TT |
12293 | std::string virtual_dwo_name = |
12294 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12295 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12296 | (long) (sections.line_size ? sections.line_offset : 0), | |
12297 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12298 | (long) (sections.str_offsets_size | |
12299 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12300 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12301 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12302 | comp_dir); |
73869dc2 DE |
12303 | /* Create one if necessary. */ |
12304 | if (*dwo_file_slot == NULL) | |
12305 | { | |
b4f54984 | 12306 | if (dwarf_read_debug) |
73869dc2 DE |
12307 | { |
12308 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12309 | virtual_dwo_name.c_str ()); |
73869dc2 | 12310 | } |
51ac9db5 | 12311 | dwo_file = new struct dwo_file; |
976ca316 | 12312 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
73869dc2 DE |
12313 | dwo_file->comp_dir = comp_dir; |
12314 | dwo_file->sections.abbrev = | |
d2854d8d CT |
12315 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.abbrev, |
12316 | sections.abbrev_offset, | |
12317 | sections.abbrev_size); | |
73869dc2 | 12318 | dwo_file->sections.line = |
d2854d8d CT |
12319 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.line, |
12320 | sections.line_offset, | |
12321 | sections.line_size); | |
73869dc2 | 12322 | dwo_file->sections.loc = |
d2854d8d CT |
12323 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.loc, |
12324 | sections.loc_offset, sections.loc_size); | |
73869dc2 | 12325 | dwo_file->sections.macinfo = |
d2854d8d CT |
12326 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macinfo, |
12327 | sections.macinfo_offset, | |
12328 | sections.macinfo_size); | |
73869dc2 | 12329 | dwo_file->sections.macro = |
d2854d8d CT |
12330 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macro, |
12331 | sections.macro_offset, | |
12332 | sections.macro_size); | |
73869dc2 | 12333 | dwo_file->sections.str_offsets = |
d2854d8d CT |
12334 | create_dwp_v2_or_v5_section (per_objfile, |
12335 | &dwp_file->sections.str_offsets, | |
12336 | sections.str_offsets_offset, | |
12337 | sections.str_offsets_size); | |
73869dc2 DE |
12338 | /* The "str" section is global to the entire DWP file. */ |
12339 | dwo_file->sections.str = dwp_file->sections.str; | |
12340 | /* The info or types section is assigned below to dwo_unit, | |
12341 | there's no need to record it in dwo_file. | |
12342 | Also, we can't simply record type sections in dwo_file because | |
12343 | we record a pointer into the vector in dwo_unit. As we collect more | |
12344 | types we'll grow the vector and eventually have to reallocate space | |
12345 | for it, invalidating all copies of pointers into the previous | |
12346 | contents. */ | |
12347 | *dwo_file_slot = dwo_file; | |
12348 | } | |
12349 | else | |
12350 | { | |
b4f54984 | 12351 | if (dwarf_read_debug) |
73869dc2 DE |
12352 | { |
12353 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12354 | virtual_dwo_name.c_str ()); |
73869dc2 | 12355 | } |
9a3c8263 | 12356 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12357 | } |
73869dc2 | 12358 | |
976ca316 | 12359 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
73869dc2 DE |
12360 | dwo_unit->dwo_file = dwo_file; |
12361 | dwo_unit->signature = signature; | |
8d749320 | 12362 | dwo_unit->section = |
976ca316 | 12363 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
d2854d8d CT |
12364 | *dwo_unit->section = create_dwp_v2_or_v5_section |
12365 | (per_objfile, | |
12366 | is_debug_types | |
12367 | ? &dwp_file->sections.types | |
12368 | : &dwp_file->sections.info, | |
12369 | sections.info_or_types_offset, | |
12370 | sections.info_or_types_size); | |
12371 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12372 | ||
12373 | return dwo_unit; | |
12374 | } | |
12375 | ||
12376 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12377 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12378 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12379 | This is for DWP version 5 files. */ | |
12380 | ||
12381 | static struct dwo_unit * | |
12382 | create_dwo_unit_in_dwp_v5 (dwarf2_per_objfile *per_objfile, | |
12383 | struct dwp_file *dwp_file, | |
12384 | uint32_t unit_index, | |
12385 | const char *comp_dir, | |
12386 | ULONGEST signature, int is_debug_types) | |
12387 | { | |
12388 | const struct dwp_hash_table *dwp_htab | |
12389 | = is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12390 | bfd *dbfd = dwp_file->dbfd.get (); | |
12391 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12392 | struct dwo_file *dwo_file; | |
12393 | struct dwo_unit *dwo_unit; | |
12394 | struct virtual_v2_or_v5_dwo_sections sections {}; | |
12395 | void **dwo_file_slot; | |
12396 | ||
12397 | gdb_assert (dwp_file->version == 5); | |
12398 | ||
12399 | if (dwarf_read_debug) | |
12400 | { | |
12401 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V5 file: %s\n", | |
12402 | kind, | |
12403 | pulongest (unit_index), hex_string (signature), | |
12404 | dwp_file->name); | |
12405 | } | |
12406 | ||
12407 | /* Fetch the section offsets of this DWO unit. */ | |
12408 | ||
12409 | /* memset (§ions, 0, sizeof (sections)); */ | |
12410 | ||
12411 | for (int i = 0; i < dwp_htab->nr_columns; ++i) | |
12412 | { | |
12413 | uint32_t offset = read_4_bytes (dbfd, | |
12414 | dwp_htab->section_pool.v5.offsets | |
12415 | + (((unit_index - 1) | |
12416 | * dwp_htab->nr_columns | |
12417 | + i) | |
12418 | * sizeof (uint32_t))); | |
12419 | uint32_t size = read_4_bytes (dbfd, | |
12420 | dwp_htab->section_pool.v5.sizes | |
12421 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12422 | + i) | |
12423 | * sizeof (uint32_t))); | |
12424 | ||
12425 | switch (dwp_htab->section_pool.v5.section_ids[i]) | |
12426 | { | |
12427 | case DW_SECT_ABBREV_V5: | |
12428 | sections.abbrev_offset = offset; | |
12429 | sections.abbrev_size = size; | |
12430 | break; | |
12431 | case DW_SECT_INFO_V5: | |
12432 | sections.info_or_types_offset = offset; | |
12433 | sections.info_or_types_size = size; | |
12434 | break; | |
12435 | case DW_SECT_LINE_V5: | |
12436 | sections.line_offset = offset; | |
12437 | sections.line_size = size; | |
12438 | break; | |
12439 | case DW_SECT_LOCLISTS_V5: | |
12440 | sections.loclists_offset = offset; | |
12441 | sections.loclists_size = size; | |
12442 | break; | |
12443 | case DW_SECT_MACRO_V5: | |
12444 | sections.macro_offset = offset; | |
12445 | sections.macro_size = size; | |
12446 | break; | |
12447 | case DW_SECT_RNGLISTS_V5: | |
12448 | sections.rnglists_offset = offset; | |
12449 | sections.rnglists_size = size; | |
12450 | break; | |
12451 | case DW_SECT_STR_OFFSETS_V5: | |
12452 | sections.str_offsets_offset = offset; | |
12453 | sections.str_offsets_size = size; | |
12454 | break; | |
12455 | case DW_SECT_RESERVED_V5: | |
12456 | default: | |
12457 | break; | |
12458 | } | |
12459 | } | |
12460 | ||
12461 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12462 | have dwo_unit "live" in that. At least for now. | |
12463 | ||
12464 | The DWP file can be made up of a random collection of CUs and TUs. | |
12465 | However, for each CU + set of TUs that came from the same original DWO | |
12466 | file, we can combine them back into a virtual DWO file to save space | |
12467 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12468 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12469 | ||
12470 | std::string virtual_dwo_name = | |
12471 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld-%ld-%ld", | |
12472 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12473 | (long) (sections.line_size ? sections.line_offset : 0), | |
12474 | (long) (sections.loclists_size ? sections.loclists_offset : 0), | |
12475 | (long) (sections.str_offsets_size | |
12476 | ? sections.str_offsets_offset : 0), | |
12477 | (long) (sections.macro_size ? sections.macro_offset : 0), | |
12478 | (long) (sections.rnglists_size ? sections.rnglists_offset: 0)); | |
12479 | /* Can we use an existing virtual DWO file? */ | |
12480 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, | |
12481 | virtual_dwo_name.c_str (), | |
12482 | comp_dir); | |
12483 | /* Create one if necessary. */ | |
12484 | if (*dwo_file_slot == NULL) | |
12485 | { | |
12486 | if (dwarf_read_debug) | |
12487 | { | |
12488 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
12489 | virtual_dwo_name.c_str ()); | |
12490 | } | |
12491 | dwo_file = new struct dwo_file; | |
12492 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); | |
12493 | dwo_file->comp_dir = comp_dir; | |
12494 | dwo_file->sections.abbrev = | |
12495 | create_dwp_v2_or_v5_section (per_objfile, | |
12496 | &dwp_file->sections.abbrev, | |
12497 | sections.abbrev_offset, | |
12498 | sections.abbrev_size); | |
12499 | dwo_file->sections.line = | |
12500 | create_dwp_v2_or_v5_section (per_objfile, | |
12501 | &dwp_file->sections.line, | |
12502 | sections.line_offset, sections.line_size); | |
12503 | dwo_file->sections.macro = | |
12504 | create_dwp_v2_or_v5_section (per_objfile, | |
12505 | &dwp_file->sections.macro, | |
12506 | sections.macro_offset, | |
12507 | sections.macro_size); | |
12508 | dwo_file->sections.loclists = | |
12509 | create_dwp_v2_or_v5_section (per_objfile, | |
12510 | &dwp_file->sections.loclists, | |
12511 | sections.loclists_offset, | |
12512 | sections.loclists_size); | |
12513 | dwo_file->sections.rnglists = | |
12514 | create_dwp_v2_or_v5_section (per_objfile, | |
12515 | &dwp_file->sections.rnglists, | |
12516 | sections.rnglists_offset, | |
12517 | sections.rnglists_size); | |
12518 | dwo_file->sections.str_offsets = | |
12519 | create_dwp_v2_or_v5_section (per_objfile, | |
12520 | &dwp_file->sections.str_offsets, | |
12521 | sections.str_offsets_offset, | |
12522 | sections.str_offsets_size); | |
12523 | /* The "str" section is global to the entire DWP file. */ | |
12524 | dwo_file->sections.str = dwp_file->sections.str; | |
12525 | /* The info or types section is assigned below to dwo_unit, | |
12526 | there's no need to record it in dwo_file. | |
12527 | Also, we can't simply record type sections in dwo_file because | |
12528 | we record a pointer into the vector in dwo_unit. As we collect more | |
12529 | types we'll grow the vector and eventually have to reallocate space | |
12530 | for it, invalidating all copies of pointers into the previous | |
12531 | contents. */ | |
12532 | *dwo_file_slot = dwo_file; | |
12533 | } | |
12534 | else | |
12535 | { | |
12536 | if (dwarf_read_debug) | |
12537 | { | |
12538 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
12539 | virtual_dwo_name.c_str ()); | |
12540 | } | |
12541 | dwo_file = (struct dwo_file *) *dwo_file_slot; | |
12542 | } | |
12543 | ||
12544 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); | |
12545 | dwo_unit->dwo_file = dwo_file; | |
12546 | dwo_unit->signature = signature; | |
12547 | dwo_unit->section | |
12548 | = XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); | |
12549 | *dwo_unit->section = create_dwp_v2_or_v5_section (per_objfile, | |
12550 | &dwp_file->sections.info, | |
12551 | sections.info_or_types_offset, | |
12552 | sections.info_or_types_size); | |
73869dc2 DE |
12553 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
12554 | ||
12555 | return dwo_unit; | |
12556 | } | |
12557 | ||
57d63ce2 DE |
12558 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12559 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12560 | |
12561 | static struct dwo_unit * | |
976ca316 | 12562 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12563 | struct dwp_file *dwp_file, const char *comp_dir, |
57d63ce2 | 12564 | ULONGEST signature, int is_debug_types) |
80626a55 | 12565 | { |
57d63ce2 DE |
12566 | const struct dwp_hash_table *dwp_htab = |
12567 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12568 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12569 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12570 | uint32_t hash = signature & mask; |
12571 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12572 | unsigned int i; | |
12573 | void **slot; | |
870f88f7 | 12574 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12575 | |
12576 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12577 | find_dwo_cu.signature = signature; | |
19ac8c2e | 12578 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
12579 | ? dwp_file->loaded_tus.get () |
12580 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 12581 | &find_dwo_cu, INSERT); |
80626a55 DE |
12582 | |
12583 | if (*slot != NULL) | |
9a3c8263 | 12584 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12585 | |
12586 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12587 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12588 | { |
12589 | ULONGEST signature_in_table; | |
12590 | ||
12591 | signature_in_table = | |
57d63ce2 | 12592 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12593 | if (signature_in_table == signature) |
12594 | { | |
57d63ce2 DE |
12595 | uint32_t unit_index = |
12596 | read_4_bytes (dbfd, | |
12597 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12598 | |
73869dc2 DE |
12599 | if (dwp_file->version == 1) |
12600 | { | |
976ca316 SM |
12601 | *slot = create_dwo_unit_in_dwp_v1 (per_objfile, dwp_file, |
12602 | unit_index, comp_dir, | |
12603 | signature, is_debug_types); | |
73869dc2 | 12604 | } |
d2854d8d | 12605 | else if (dwp_file->version == 2) |
73869dc2 | 12606 | { |
976ca316 SM |
12607 | *slot = create_dwo_unit_in_dwp_v2 (per_objfile, dwp_file, |
12608 | unit_index, comp_dir, | |
12609 | signature, is_debug_types); | |
73869dc2 | 12610 | } |
d2854d8d CT |
12611 | else /* version == 5 */ |
12612 | { | |
12613 | *slot = create_dwo_unit_in_dwp_v5 (per_objfile, dwp_file, | |
12614 | unit_index, comp_dir, | |
12615 | signature, is_debug_types); | |
12616 | } | |
9a3c8263 | 12617 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12618 | } |
12619 | if (signature_in_table == 0) | |
12620 | return NULL; | |
12621 | hash = (hash + hash2) & mask; | |
12622 | } | |
12623 | ||
12624 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12625 | " [in module %s]"), | |
12626 | dwp_file->name); | |
12627 | } | |
12628 | ||
ab5088bf | 12629 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12630 | Open the file specified by FILE_NAME and hand it off to BFD for |
12631 | preliminary analysis. Return a newly initialized bfd *, which | |
12632 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12633 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12634 | SEARCH_CWD is true if the current directory is to be searched. |
12635 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12636 | If successful, the file is added to the bfd include table of the |
12637 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12638 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12639 | NOTE: This function is derived from symfile_bfd_open. */ |
12640 | ||
192b62ce | 12641 | static gdb_bfd_ref_ptr |
976ca316 | 12642 | try_open_dwop_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12643 | const char *file_name, int is_dwp, int search_cwd) |
3019eac3 | 12644 | { |
24b9144d | 12645 | int desc; |
9c02c129 DE |
12646 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12647 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12648 | to debug_file_directory. */ | |
e0cc99a6 | 12649 | const char *search_path; |
9c02c129 DE |
12650 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12651 | ||
e0cc99a6 | 12652 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12653 | if (search_cwd) |
12654 | { | |
12655 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12656 | { |
12657 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12658 | debug_file_directory, | |
12659 | (char *) NULL)); | |
12660 | search_path = search_path_holder.get (); | |
12661 | } | |
6ac97d4c | 12662 | else |
e0cc99a6 | 12663 | search_path = "."; |
6ac97d4c | 12664 | } |
9c02c129 | 12665 | else |
e0cc99a6 | 12666 | search_path = debug_file_directory; |
3019eac3 | 12667 | |
24b9144d | 12668 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12669 | if (is_dwp) |
12670 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12671 | |
12672 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12673 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12674 | O_RDONLY | O_BINARY, &absolute_name); |
12675 | if (desc < 0) | |
12676 | return NULL; | |
12677 | ||
e0cc99a6 TT |
12678 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12679 | gnutarget, desc)); | |
9c02c129 DE |
12680 | if (sym_bfd == NULL) |
12681 | return NULL; | |
192b62ce | 12682 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12683 | |
192b62ce TT |
12684 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12685 | return NULL; | |
3019eac3 | 12686 | |
13aaf454 DE |
12687 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12688 | This is important because things like demangled_names_hash lives in the | |
12689 | objfile's per_bfd space and may have references to things like symbol | |
12690 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
976ca316 | 12691 | gdb_bfd_record_inclusion (per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12692 | |
3019eac3 DE |
12693 | return sym_bfd; |
12694 | } | |
12695 | ||
ab5088bf | 12696 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12697 | COMP_DIR is the DW_AT_comp_dir attribute. |
12698 | The result is the bfd handle of the file. | |
12699 | If there is a problem finding or opening the file, return NULL. | |
12700 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12701 | same as symfile_bfd_open. */ | |
12702 | ||
192b62ce | 12703 | static gdb_bfd_ref_ptr |
976ca316 | 12704 | open_dwo_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12705 | const char *file_name, const char *comp_dir) |
3019eac3 | 12706 | { |
80626a55 | 12707 | if (IS_ABSOLUTE_PATH (file_name)) |
976ca316 | 12708 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12709 | 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
12710 | |
12711 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12712 | ||
12713 | if (comp_dir != NULL) | |
12714 | { | |
43816ebc TT |
12715 | gdb::unique_xmalloc_ptr<char> path_to_try |
12716 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12717 | |
12718 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12719 | search path, which seems useful. */ | |
976ca316 | 12720 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, path_to_try.get (), |
ed2dc618 | 12721 | 0 /*is_dwp*/, |
192b62ce | 12722 | 1 /*search_cwd*/)); |
3019eac3 DE |
12723 | if (abfd != NULL) |
12724 | return abfd; | |
12725 | } | |
12726 | ||
12727 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12728 | is a list of paths. */ | |
12729 | ||
12730 | if (*debug_file_directory == '\0') | |
12731 | return NULL; | |
12732 | ||
976ca316 | 12733 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12734 | 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
12735 | } |
12736 | ||
80626a55 DE |
12737 | /* This function is mapped across the sections and remembers the offset and |
12738 | size of each of the DWO debugging sections we are interested in. */ | |
12739 | ||
12740 | static void | |
12741 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12742 | { | |
9a3c8263 | 12743 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12744 | const struct dwop_section_names *names = &dwop_section_names; |
12745 | ||
12746 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12747 | { | |
049412e3 | 12748 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12749 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12750 | } |
12751 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12752 | { | |
049412e3 | 12753 | dwo_sections->info.s.section = sectp; |
fd361982 | 12754 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12755 | } |
12756 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12757 | { | |
049412e3 | 12758 | dwo_sections->line.s.section = sectp; |
fd361982 | 12759 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12760 | } |
12761 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12762 | { | |
049412e3 | 12763 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12764 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12765 | } |
41144253 | 12766 | else if (section_is_p (sectp->name, &names->loclists_dwo)) |
12767 | { | |
12768 | dwo_sections->loclists.s.section = sectp; | |
12769 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12770 | } | |
80626a55 DE |
12771 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) |
12772 | { | |
049412e3 | 12773 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12774 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12775 | } |
12776 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12777 | { | |
049412e3 | 12778 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12779 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 | 12780 | } |
d0ce17d8 CT |
12781 | else if (section_is_p (sectp->name, &names->rnglists_dwo)) |
12782 | { | |
12783 | dwo_sections->rnglists.s.section = sectp; | |
12784 | dwo_sections->rnglists.size = bfd_section_size (sectp); | |
12785 | } | |
80626a55 DE |
12786 | else if (section_is_p (sectp->name, &names->str_dwo)) |
12787 | { | |
049412e3 | 12788 | dwo_sections->str.s.section = sectp; |
fd361982 | 12789 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12790 | } |
12791 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12792 | { | |
049412e3 | 12793 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12794 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12795 | } |
12796 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12797 | { | |
12798 | struct dwarf2_section_info type_section; | |
12799 | ||
12800 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12801 | type_section.s.section = sectp; |
fd361982 | 12802 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12803 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12804 | } |
12805 | } | |
12806 | ||
ab5088bf | 12807 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12808 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12809 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12810 | |
12811 | static struct dwo_file * | |
4ab09049 SM |
12812 | open_and_init_dwo_file (dwarf2_cu *cu, const char *dwo_name, |
12813 | const char *comp_dir) | |
3019eac3 | 12814 | { |
976ca316 | 12815 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 12816 | |
976ca316 | 12817 | gdb_bfd_ref_ptr dbfd = open_dwo_file (per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12818 | if (dbfd == NULL) |
12819 | { | |
b4f54984 | 12820 | if (dwarf_read_debug) |
80626a55 DE |
12821 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12822 | return NULL; | |
12823 | } | |
263db9a1 | 12824 | |
51ac9db5 | 12825 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12826 | dwo_file->dwo_name = dwo_name; |
12827 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12828 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12829 | |
fb1eb2f9 | 12830 | bfd_map_over_sections (dwo_file->dbfd.get (), dwarf2_locate_dwo_sections, |
192b62ce | 12831 | &dwo_file->sections); |
3019eac3 | 12832 | |
976ca316 SM |
12833 | create_cus_hash_table (per_objfile, cu, *dwo_file, dwo_file->sections.info, |
12834 | dwo_file->cus); | |
3019eac3 | 12835 | |
d2854d8d CT |
12836 | if (cu->per_cu->dwarf_version < 5) |
12837 | { | |
12838 | create_debug_types_hash_table (per_objfile, dwo_file.get (), | |
12839 | dwo_file->sections.types, dwo_file->tus); | |
12840 | } | |
12841 | else | |
12842 | { | |
12843 | create_debug_type_hash_table (per_objfile, dwo_file.get (), | |
12844 | &dwo_file->sections.info, dwo_file->tus, | |
12845 | rcuh_kind::TYPE); | |
12846 | } | |
3019eac3 | 12847 | |
b4f54984 | 12848 | if (dwarf_read_debug) |
80626a55 DE |
12849 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12850 | ||
263db9a1 | 12851 | return dwo_file.release (); |
3019eac3 DE |
12852 | } |
12853 | ||
80626a55 | 12854 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12855 | size of each of the DWP debugging sections common to version 1 and 2 that |
12856 | we are interested in. */ | |
3019eac3 | 12857 | |
80626a55 | 12858 | static void |
73869dc2 DE |
12859 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12860 | void *dwp_file_ptr) | |
3019eac3 | 12861 | { |
9a3c8263 | 12862 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12863 | const struct dwop_section_names *names = &dwop_section_names; |
12864 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12865 | |
80626a55 | 12866 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12867 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12868 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12869 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12870 | |
80626a55 DE |
12871 | /* Look for specific sections that we need. */ |
12872 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12873 | { | |
049412e3 | 12874 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12875 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12876 | } |
12877 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12878 | { | |
049412e3 | 12879 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12880 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12881 | } |
12882 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12883 | { | |
049412e3 | 12884 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12885 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12886 | } |
12887 | } | |
3019eac3 | 12888 | |
73869dc2 DE |
12889 | /* This function is mapped across the sections and remembers the offset and |
12890 | size of each of the DWP version 2 debugging sections that we are interested | |
12891 | in. This is split into a separate function because we don't know if we | |
d2854d8d | 12892 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ |
73869dc2 DE |
12893 | |
12894 | static void | |
12895 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12896 | { | |
9a3c8263 | 12897 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12898 | const struct dwop_section_names *names = &dwop_section_names; |
12899 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12900 | ||
12901 | /* Record the ELF section number for later lookup: this is what the | |
12902 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12903 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12904 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12905 | ||
12906 | /* Look for specific sections that we need. */ | |
12907 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12908 | { | |
049412e3 | 12909 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12910 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12911 | } |
12912 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12913 | { | |
049412e3 | 12914 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12915 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12916 | } |
12917 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12918 | { | |
049412e3 | 12919 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12920 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12921 | } |
12922 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12923 | { | |
049412e3 | 12924 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12925 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12926 | } |
12927 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12928 | { | |
049412e3 | 12929 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12930 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
12931 | } |
12932 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12933 | { | |
049412e3 | 12934 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12935 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
12936 | } |
12937 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12938 | { | |
049412e3 | 12939 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12940 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
12941 | } |
12942 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12943 | { | |
049412e3 | 12944 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12945 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12946 | } |
12947 | } | |
12948 | ||
d2854d8d CT |
12949 | /* This function is mapped across the sections and remembers the offset and |
12950 | size of each of the DWP version 5 debugging sections that we are interested | |
12951 | in. This is split into a separate function because we don't know if we | |
12952 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ | |
12953 | ||
12954 | static void | |
12955 | dwarf2_locate_v5_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12956 | { | |
12957 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; | |
12958 | const struct dwop_section_names *names = &dwop_section_names; | |
12959 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12960 | ||
12961 | /* Record the ELF section number for later lookup: this is what the | |
12962 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12963 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12964 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12965 | ||
12966 | /* Look for specific sections that we need. */ | |
12967 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12968 | { | |
12969 | dwp_file->sections.abbrev.s.section = sectp; | |
12970 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); | |
12971 | } | |
12972 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12973 | { | |
12974 | dwp_file->sections.info.s.section = sectp; | |
12975 | dwp_file->sections.info.size = bfd_section_size (sectp); | |
12976 | } | |
12977 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12978 | { | |
12979 | dwp_file->sections.line.s.section = sectp; | |
12980 | dwp_file->sections.line.size = bfd_section_size (sectp); | |
12981 | } | |
12982 | else if (section_is_p (sectp->name, &names->loclists_dwo)) | |
12983 | { | |
12984 | dwp_file->sections.loclists.s.section = sectp; | |
12985 | dwp_file->sections.loclists.size = bfd_section_size (sectp); | |
12986 | } | |
12987 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12988 | { | |
12989 | dwp_file->sections.macro.s.section = sectp; | |
12990 | dwp_file->sections.macro.size = bfd_section_size (sectp); | |
12991 | } | |
12992 | else if (section_is_p (sectp->name, &names->rnglists_dwo)) | |
12993 | { | |
12994 | dwp_file->sections.rnglists.s.section = sectp; | |
12995 | dwp_file->sections.rnglists.size = bfd_section_size (sectp); | |
12996 | } | |
12997 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12998 | { | |
12999 | dwp_file->sections.str_offsets.s.section = sectp; | |
13000 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); | |
13001 | } | |
13002 | } | |
13003 | ||
80626a55 | 13004 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13005 | |
80626a55 DE |
13006 | static hashval_t |
13007 | hash_dwp_loaded_cutus (const void *item) | |
13008 | { | |
9a3c8263 | 13009 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13010 | |
80626a55 DE |
13011 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13012 | return dwo_unit->signature; | |
3019eac3 DE |
13013 | } |
13014 | ||
80626a55 | 13015 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13016 | |
80626a55 DE |
13017 | static int |
13018 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13019 | { |
9a3c8263 SM |
13020 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13021 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13022 | |
80626a55 DE |
13023 | return dua->signature == dub->signature; |
13024 | } | |
3019eac3 | 13025 | |
80626a55 | 13026 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13027 | |
48b490f2 | 13028 | static htab_up |
298e9637 | 13029 | allocate_dwp_loaded_cutus_table () |
80626a55 | 13030 | { |
48b490f2 TT |
13031 | return htab_up (htab_create_alloc (3, |
13032 | hash_dwp_loaded_cutus, | |
13033 | eq_dwp_loaded_cutus, | |
13034 | NULL, xcalloc, xfree)); | |
80626a55 | 13035 | } |
3019eac3 | 13036 | |
ab5088bf DE |
13037 | /* Try to open DWP file FILE_NAME. |
13038 | The result is the bfd handle of the file. | |
13039 | If there is a problem finding or opening the file, return NULL. | |
13040 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13041 | same as symfile_bfd_open. */ | |
13042 | ||
192b62ce | 13043 | static gdb_bfd_ref_ptr |
976ca316 | 13044 | open_dwp_file (dwarf2_per_objfile *per_objfile, const char *file_name) |
ab5088bf | 13045 | { |
976ca316 | 13046 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 13047 | 1 /*is_dwp*/, |
192b62ce | 13048 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13049 | if (abfd != NULL) |
13050 | return abfd; | |
13051 | ||
13052 | /* Work around upstream bug 15652. | |
13053 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13054 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13055 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13056 | of the executable's path may have discarded the needed info. | |
13057 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13058 | .gnu_debuglink, but that doesn't exist yet.] | |
13059 | Strip the directory from FILE_NAME and search again. */ | |
13060 | if (*debug_file_directory != '\0') | |
13061 | { | |
13062 | /* Don't implicitly search the current directory here. | |
13063 | If the user wants to search "." to handle this case, | |
13064 | it must be added to debug-file-directory. */ | |
976ca316 SM |
13065 | return try_open_dwop_file (per_objfile, lbasename (file_name), |
13066 | 1 /*is_dwp*/, | |
6ac97d4c DE |
13067 | 0 /*search_cwd*/); |
13068 | } | |
13069 | ||
13070 | return NULL; | |
ab5088bf DE |
13071 | } |
13072 | ||
80626a55 DE |
13073 | /* Initialize the use of the DWP file for the current objfile. |
13074 | By convention the name of the DWP file is ${objfile}.dwp. | |
13075 | The result is NULL if it can't be found. */ | |
a766d390 | 13076 | |
400174b1 | 13077 | static std::unique_ptr<struct dwp_file> |
976ca316 | 13078 | open_and_init_dwp_file (dwarf2_per_objfile *per_objfile) |
80626a55 | 13079 | { |
976ca316 | 13080 | struct objfile *objfile = per_objfile->objfile; |
80626a55 | 13081 | |
82bf32bc JK |
13082 | /* Try to find first .dwp for the binary file before any symbolic links |
13083 | resolving. */ | |
6c447423 DE |
13084 | |
13085 | /* If the objfile is a debug file, find the name of the real binary | |
13086 | file and get the name of dwp file from there. */ | |
d721ba37 | 13087 | std::string dwp_name; |
6c447423 DE |
13088 | if (objfile->separate_debug_objfile_backlink != NULL) |
13089 | { | |
13090 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13091 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13092 | |
d721ba37 | 13093 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13094 | } |
13095 | else | |
d721ba37 PA |
13096 | dwp_name = objfile->original_name; |
13097 | ||
13098 | dwp_name += ".dwp"; | |
80626a55 | 13099 | |
976ca316 | 13100 | gdb_bfd_ref_ptr dbfd (open_dwp_file (per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13101 | if (dbfd == NULL |
13102 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13103 | { | |
13104 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13105 | dwp_name = objfile_name (objfile); |
13106 | dwp_name += ".dwp"; | |
976ca316 | 13107 | dbfd = open_dwp_file (per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13108 | } |
13109 | ||
80626a55 DE |
13110 | if (dbfd == NULL) |
13111 | { | |
b4f54984 | 13112 | if (dwarf_read_debug) |
d721ba37 | 13113 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 13114 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 13115 | } |
400174b1 TT |
13116 | |
13117 | const char *name = bfd_get_filename (dbfd.get ()); | |
13118 | std::unique_ptr<struct dwp_file> dwp_file | |
13119 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 13120 | |
0a0f4c01 | 13121 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 | 13122 | dwp_file->elf_sections = |
976ca316 | 13123 | OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
80626a55 DE |
13124 | dwp_file->num_sections, asection *); |
13125 | ||
400174b1 TT |
13126 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13127 | dwarf2_locate_common_dwp_sections, | |
13128 | dwp_file.get ()); | |
80626a55 | 13129 | |
976ca316 | 13130 | dwp_file->cus = create_dwp_hash_table (per_objfile, dwp_file.get (), 0); |
80626a55 | 13131 | |
976ca316 | 13132 | dwp_file->tus = create_dwp_hash_table (per_objfile, dwp_file.get (), 1); |
80626a55 | 13133 | |
73869dc2 | 13134 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13135 | if (dwp_file->cus && dwp_file->tus |
13136 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13137 | { |
13138 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13139 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13140 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13141 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13142 | " TU version %s [in DWP file %s]"), | |
13143 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13144 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13145 | } |
08302ed2 DE |
13146 | |
13147 | if (dwp_file->cus) | |
13148 | dwp_file->version = dwp_file->cus->version; | |
13149 | else if (dwp_file->tus) | |
13150 | dwp_file->version = dwp_file->tus->version; | |
13151 | else | |
13152 | dwp_file->version = 2; | |
73869dc2 DE |
13153 | |
13154 | if (dwp_file->version == 2) | |
400174b1 TT |
13155 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13156 | dwarf2_locate_v2_dwp_sections, | |
13157 | dwp_file.get ()); | |
d2854d8d CT |
13158 | else if (dwp_file->version == 5) |
13159 | bfd_map_over_sections (dwp_file->dbfd.get (), | |
13160 | dwarf2_locate_v5_dwp_sections, | |
13161 | dwp_file.get ()); | |
13162 | ||
73869dc2 | 13163 | |
298e9637 SM |
13164 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
13165 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 13166 | |
b4f54984 | 13167 | if (dwarf_read_debug) |
80626a55 DE |
13168 | { |
13169 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
13170 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
13171 | " %s CUs, %s TUs\n", |
13172 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13173 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13174 | } |
13175 | ||
13176 | return dwp_file; | |
3019eac3 | 13177 | } |
c906108c | 13178 | |
ab5088bf DE |
13179 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13180 | ||
13181 | static struct dwp_file * | |
976ca316 | 13182 | get_dwp_file (dwarf2_per_objfile *per_objfile) |
ab5088bf | 13183 | { |
976ca316 | 13184 | if (!per_objfile->per_bfd->dwp_checked) |
ab5088bf | 13185 | { |
976ca316 SM |
13186 | per_objfile->per_bfd->dwp_file = open_and_init_dwp_file (per_objfile); |
13187 | per_objfile->per_bfd->dwp_checked = 1; | |
ab5088bf | 13188 | } |
976ca316 | 13189 | return per_objfile->per_bfd->dwp_file.get (); |
ab5088bf DE |
13190 | } |
13191 | ||
80626a55 DE |
13192 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13193 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13194 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13195 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13196 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13197 | ||
13198 | This is called, for example, when wanting to read a variable with a | |
13199 | complex location. Therefore we don't want to do file i/o for every call. | |
13200 | Therefore we don't want to look for a DWO file on every call. | |
13201 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13202 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13203 | for a DWO file. | |
13204 | ||
1c658ad5 | 13205 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13206 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13207 | |
3019eac3 | 13208 | static struct dwo_unit * |
4ab09049 | 13209 | lookup_dwo_cutu (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 | 13210 | ULONGEST signature, int is_debug_types) |
3019eac3 | 13211 | { |
976ca316 SM |
13212 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13213 | struct objfile *objfile = per_objfile->objfile; | |
80626a55 DE |
13214 | const char *kind = is_debug_types ? "TU" : "CU"; |
13215 | void **dwo_file_slot; | |
3019eac3 | 13216 | struct dwo_file *dwo_file; |
80626a55 | 13217 | struct dwp_file *dwp_file; |
cb1df416 | 13218 | |
6a506a2d DE |
13219 | /* First see if there's a DWP file. |
13220 | If we have a DWP file but didn't find the DWO inside it, don't | |
13221 | look for the original DWO file. It makes gdb behave differently | |
13222 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13223 | |
976ca316 | 13224 | dwp_file = get_dwp_file (per_objfile); |
80626a55 | 13225 | if (dwp_file != NULL) |
cf2c3c16 | 13226 | { |
80626a55 DE |
13227 | const struct dwp_hash_table *dwp_htab = |
13228 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13229 | ||
13230 | if (dwp_htab != NULL) | |
13231 | { | |
13232 | struct dwo_unit *dwo_cutu = | |
976ca316 SM |
13233 | lookup_dwo_unit_in_dwp (per_objfile, dwp_file, comp_dir, signature, |
13234 | is_debug_types); | |
80626a55 DE |
13235 | |
13236 | if (dwo_cutu != NULL) | |
13237 | { | |
b4f54984 | 13238 | if (dwarf_read_debug) |
80626a55 DE |
13239 | { |
13240 | fprintf_unfiltered (gdb_stdlog, | |
13241 | "Virtual DWO %s %s found: @%s\n", | |
13242 | kind, hex_string (signature), | |
13243 | host_address_to_string (dwo_cutu)); | |
13244 | } | |
13245 | return dwo_cutu; | |
13246 | } | |
13247 | } | |
13248 | } | |
6a506a2d | 13249 | else |
80626a55 | 13250 | { |
6a506a2d | 13251 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13252 | |
976ca316 | 13253 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, dwo_name, comp_dir); |
6a506a2d | 13254 | if (*dwo_file_slot == NULL) |
80626a55 | 13255 | { |
6a506a2d | 13256 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
4ab09049 | 13257 | *dwo_file_slot = open_and_init_dwo_file (cu, dwo_name, comp_dir); |
19c3d4c9 | 13258 | } |
6a506a2d | 13259 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13260 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13261 | |
6a506a2d | 13262 | if (dwo_file != NULL) |
19c3d4c9 | 13263 | { |
6a506a2d DE |
13264 | struct dwo_unit *dwo_cutu = NULL; |
13265 | ||
13266 | if (is_debug_types && dwo_file->tus) | |
13267 | { | |
13268 | struct dwo_unit find_dwo_cutu; | |
13269 | ||
13270 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13271 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 13272 | dwo_cutu |
b0b6a987 TT |
13273 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
13274 | &find_dwo_cutu); | |
6a506a2d | 13275 | } |
33c5cd75 | 13276 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13277 | { |
33c5cd75 DB |
13278 | struct dwo_unit find_dwo_cutu; |
13279 | ||
13280 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13281 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 13282 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 13283 | &find_dwo_cutu); |
6a506a2d DE |
13284 | } |
13285 | ||
13286 | if (dwo_cutu != NULL) | |
13287 | { | |
b4f54984 | 13288 | if (dwarf_read_debug) |
6a506a2d DE |
13289 | { |
13290 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
13291 | kind, dwo_name, hex_string (signature), | |
13292 | host_address_to_string (dwo_cutu)); | |
13293 | } | |
13294 | return dwo_cutu; | |
80626a55 DE |
13295 | } |
13296 | } | |
2e276125 | 13297 | } |
9cdd5dbd | 13298 | |
80626a55 DE |
13299 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13300 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13301 | correctly to find the file. */ | |
13302 | ||
b4f54984 | 13303 | if (dwarf_read_debug) |
80626a55 DE |
13304 | { |
13305 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
13306 | kind, dwo_name, hex_string (signature)); | |
13307 | } | |
3019eac3 | 13308 | |
6656a72d DE |
13309 | /* This is a warning and not a complaint because it can be caused by |
13310 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13311 | { |
13312 | /* Print the name of the DWP file if we looked there, helps the user | |
13313 | better diagnose the problem. */ | |
791afaa2 | 13314 | std::string dwp_text; |
43942612 DE |
13315 | |
13316 | if (dwp_file != NULL) | |
791afaa2 TT |
13317 | dwp_text = string_printf (" [in DWP file %s]", |
13318 | lbasename (dwp_file->name)); | |
43942612 | 13319 | |
9d8780f0 | 13320 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 | 13321 | " [in module %s]"), |
4ab09049 SM |
13322 | kind, dwo_name, hex_string (signature), dwp_text.c_str (), kind, |
13323 | sect_offset_str (cu->per_cu->sect_off), objfile_name (objfile)); | |
43942612 | 13324 | } |
3019eac3 | 13325 | return NULL; |
5fb290d7 DJ |
13326 | } |
13327 | ||
80626a55 DE |
13328 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13329 | See lookup_dwo_cutu_unit for details. */ | |
13330 | ||
13331 | static struct dwo_unit * | |
4ab09049 | 13332 | lookup_dwo_comp_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 DE |
13333 | ULONGEST signature) |
13334 | { | |
4ab09049 SM |
13335 | gdb_assert (!cu->per_cu->is_debug_types); |
13336 | ||
13337 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, signature, 0); | |
80626a55 DE |
13338 | } |
13339 | ||
13340 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13341 | See lookup_dwo_cutu_unit for details. */ | |
13342 | ||
13343 | static struct dwo_unit * | |
4ab09049 | 13344 | lookup_dwo_type_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir) |
80626a55 | 13345 | { |
4ab09049 SM |
13346 | gdb_assert (cu->per_cu->is_debug_types); |
13347 | ||
13348 | signatured_type *sig_type = (signatured_type *) cu->per_cu; | |
13349 | ||
13350 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, sig_type->signature, 1); | |
80626a55 DE |
13351 | } |
13352 | ||
89e63ee4 DE |
13353 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13354 | ||
13355 | static int | |
13356 | queue_and_load_dwo_tu (void **slot, void *info) | |
13357 | { | |
13358 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
d460f660 | 13359 | dwarf2_cu *cu = (dwarf2_cu *) info; |
89e63ee4 | 13360 | ULONGEST signature = dwo_unit->signature; |
d460f660 | 13361 | signatured_type *sig_type = lookup_dwo_signatured_type (cu, signature); |
89e63ee4 DE |
13362 | |
13363 | if (sig_type != NULL) | |
13364 | { | |
13365 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13366 | ||
13367 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13368 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13369 | while processing PER_CU. */ | |
120ce1b5 | 13370 | if (maybe_queue_comp_unit (NULL, sig_cu, cu->per_objfile, cu->language)) |
d460f660 SM |
13371 | load_full_type_unit (sig_cu, cu->per_objfile); |
13372 | cu->per_cu->imported_symtabs_push (sig_cu); | |
89e63ee4 DE |
13373 | } |
13374 | ||
13375 | return 1; | |
13376 | } | |
13377 | ||
1b555f17 | 13378 | /* Queue all TUs contained in the DWO of CU to be read in. |
89e63ee4 DE |
13379 | The DWO may have the only definition of the type, though it may not be |
13380 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13381 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13382 | ||
13383 | static void | |
1b555f17 | 13384 | queue_and_load_all_dwo_tus (dwarf2_cu *cu) |
89e63ee4 DE |
13385 | { |
13386 | struct dwo_unit *dwo_unit; | |
13387 | struct dwo_file *dwo_file; | |
13388 | ||
1b555f17 SM |
13389 | gdb_assert (cu != nullptr); |
13390 | gdb_assert (!cu->per_cu->is_debug_types); | |
13391 | gdb_assert (get_dwp_file (cu->per_objfile) == nullptr); | |
89e63ee4 | 13392 | |
1b555f17 | 13393 | dwo_unit = cu->dwo_unit; |
89e63ee4 DE |
13394 | gdb_assert (dwo_unit != NULL); |
13395 | ||
13396 | dwo_file = dwo_unit->dwo_file; | |
13397 | if (dwo_file->tus != NULL) | |
1b555f17 | 13398 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, cu); |
89e63ee4 DE |
13399 | } |
13400 | ||
3019eac3 | 13401 | /* Read in various DIEs. */ |
348e048f | 13402 | |
d389af10 | 13403 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13404 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13405 | already referenced by DW_AT_abstract_origin from the children of the | |
13406 | current DIE. */ | |
d389af10 JK |
13407 | |
13408 | static void | |
13409 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13410 | { | |
13411 | struct die_info *child_die; | |
791afaa2 | 13412 | sect_offset *offsetp; |
d389af10 JK |
13413 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13414 | struct die_info *origin_die; | |
13415 | /* Iterator of the ORIGIN_DIE children. */ | |
13416 | struct die_info *origin_child_die; | |
d389af10 | 13417 | struct attribute *attr; |
cd02d79d PA |
13418 | struct dwarf2_cu *origin_cu; |
13419 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13420 | |
13421 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13422 | if (!attr) | |
13423 | return; | |
13424 | ||
cd02d79d PA |
13425 | /* Note that following die references may follow to a die in a |
13426 | different cu. */ | |
13427 | ||
13428 | origin_cu = cu; | |
13429 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13430 | ||
13431 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13432 | symbols in. */ | |
13433 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13434 | origin_cu->list_in_scope = cu->list_in_scope; | |
13435 | ||
edb3359d DJ |
13436 | if (die->tag != origin_die->tag |
13437 | && !(die->tag == DW_TAG_inlined_subroutine | |
13438 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13439 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13440 | sect_offset_str (die->sect_off), |
13441 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13442 | |
791afaa2 | 13443 | std::vector<sect_offset> offsets; |
d389af10 | 13444 | |
3ea89b92 PMR |
13445 | for (child_die = die->child; |
13446 | child_die && child_die->tag; | |
436c571c | 13447 | child_die = child_die->sibling) |
3ea89b92 PMR |
13448 | { |
13449 | struct die_info *child_origin_die; | |
13450 | struct dwarf2_cu *child_origin_cu; | |
13451 | ||
13452 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13453 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13454 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13455 | present in the abstract instance but not referenced in the concrete | |
13456 | one. */ | |
216f72a1 JK |
13457 | if (child_die->tag == DW_TAG_call_site |
13458 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13459 | continue; |
13460 | ||
c38f313d DJ |
13461 | /* For each CHILD_DIE, find the corresponding child of |
13462 | ORIGIN_DIE. If there is more than one layer of | |
13463 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13464 | but GCC versions at least through 4.4 generate this (GCC PR | |
13465 | 40573). */ | |
3ea89b92 PMR |
13466 | child_origin_die = child_die; |
13467 | child_origin_cu = cu; | |
c38f313d DJ |
13468 | while (1) |
13469 | { | |
cd02d79d PA |
13470 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13471 | child_origin_cu); | |
c38f313d DJ |
13472 | if (attr == NULL) |
13473 | break; | |
cd02d79d PA |
13474 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13475 | &child_origin_cu); | |
c38f313d DJ |
13476 | } |
13477 | ||
d389af10 JK |
13478 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13479 | counterpart may exist. */ | |
c38f313d | 13480 | if (child_origin_die != child_die) |
d389af10 | 13481 | { |
edb3359d DJ |
13482 | if (child_die->tag != child_origin_die->tag |
13483 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13484 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13485 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13486 | "different tags"), |
9d8780f0 SM |
13487 | sect_offset_str (child_die->sect_off), |
13488 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13489 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13490 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13491 | "different parents"), |
9d8780f0 SM |
13492 | sect_offset_str (child_die->sect_off), |
13493 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13494 | else |
791afaa2 | 13495 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13496 | } |
d389af10 | 13497 | } |
791afaa2 TT |
13498 | std::sort (offsets.begin (), offsets.end ()); |
13499 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13500 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13501 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13502 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13503 | "to DIE %s as their abstract origin"), |
13504 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13505 | |
791afaa2 | 13506 | offsetp = offsets.data (); |
d389af10 JK |
13507 | origin_child_die = origin_die->child; |
13508 | while (origin_child_die && origin_child_die->tag) | |
13509 | { | |
13510 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13511 | while (offsetp < offsets_end |
9c541725 | 13512 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13513 | offsetp++; |
b64f50a1 | 13514 | if (offsetp >= offsets_end |
9c541725 | 13515 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13516 | { |
adde2bff DE |
13517 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13518 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13519 | This can happen with mutually referenced abstract_origins. | |
13520 | PR 16581. */ | |
13521 | if (!origin_child_die->in_process) | |
13522 | process_die (origin_child_die, origin_cu); | |
d389af10 | 13523 | } |
436c571c | 13524 | origin_child_die = origin_child_die->sibling; |
d389af10 | 13525 | } |
cd02d79d | 13526 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13527 | |
13528 | if (cu != origin_cu) | |
13529 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13530 | } |
13531 | ||
c906108c | 13532 | static void |
e7c27a73 | 13533 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13534 | { |
5e22e966 | 13535 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13536 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 13537 | struct context_stack *newobj; |
c906108c SS |
13538 | CORE_ADDR lowpc; |
13539 | CORE_ADDR highpc; | |
13540 | struct die_info *child_die; | |
edb3359d | 13541 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13542 | const char *name; |
e142c38c | 13543 | CORE_ADDR baseaddr; |
801e3a5b | 13544 | struct block *block; |
edb3359d | 13545 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13546 | std::vector<struct symbol *> template_args; |
34eaf542 | 13547 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13548 | |
13549 | if (inlined_func) | |
13550 | { | |
13551 | /* If we do not have call site information, we can't show the | |
13552 | caller of this inlined function. That's too confusing, so | |
13553 | only use the scope for local variables. */ | |
13554 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13555 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13556 | if (call_line == NULL || call_file == NULL) | |
13557 | { | |
13558 | read_lexical_block_scope (die, cu); | |
13559 | return; | |
13560 | } | |
13561 | } | |
c906108c | 13562 | |
b3b3bada | 13563 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13564 | |
94af9270 | 13565 | name = dwarf2_name (die, cu); |
c906108c | 13566 | |
e8d05480 JB |
13567 | /* Ignore functions with missing or empty names. These are actually |
13568 | illegal according to the DWARF standard. */ | |
13569 | if (name == NULL) | |
13570 | { | |
b98664d3 | 13571 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13572 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13573 | return; |
13574 | } | |
13575 | ||
13576 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13577 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13578 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13579 | { |
ae4d0c03 PM |
13580 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13581 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13582 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13583 | "for subprogram DIE at %s"), |
13584 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13585 | return; |
13586 | } | |
c906108c | 13587 | |
3e29f34a MR |
13588 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13589 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13590 | |
34eaf542 TT |
13591 | /* If we have any template arguments, then we must allocate a |
13592 | different sort of symbol. */ | |
436c571c | 13593 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
13594 | { |
13595 | if (child_die->tag == DW_TAG_template_type_param | |
13596 | || child_die->tag == DW_TAG_template_value_param) | |
13597 | { | |
8c14c3a3 | 13598 | templ_func = new (&objfile->objfile_obstack) template_symbol; |
cf724bc9 | 13599 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13600 | break; |
13601 | } | |
13602 | } | |
13603 | ||
c24bdb02 | 13604 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13605 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13606 | (struct symbol *) templ_func); | |
4c2df51b | 13607 | |
81873cc8 | 13608 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13609 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13610 | cu->language); |
13611 | ||
4cecd739 DJ |
13612 | /* If there is a location expression for DW_AT_frame_base, record |
13613 | it. */ | |
e142c38c | 13614 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13615 | if (attr != nullptr) |
fe978cb0 | 13616 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13617 | |
63e43d3a PMR |
13618 | /* If there is a location for the static link, record it. */ |
13619 | newobj->static_link = NULL; | |
13620 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13621 | if (attr != nullptr) |
63e43d3a | 13622 | { |
224c3ddb SM |
13623 | newobj->static_link |
13624 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 13625 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
293e7e51 | 13626 | cu->addr_type ()); |
63e43d3a PMR |
13627 | } |
13628 | ||
c24bdb02 | 13629 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13630 | |
639d11d3 | 13631 | if (die->child != NULL) |
c906108c | 13632 | { |
639d11d3 | 13633 | child_die = die->child; |
c906108c SS |
13634 | while (child_die && child_die->tag) |
13635 | { | |
34eaf542 TT |
13636 | if (child_die->tag == DW_TAG_template_type_param |
13637 | || child_die->tag == DW_TAG_template_value_param) | |
13638 | { | |
13639 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13640 | ||
f1078f66 | 13641 | if (arg != NULL) |
2f4732b0 | 13642 | template_args.push_back (arg); |
34eaf542 TT |
13643 | } |
13644 | else | |
13645 | process_die (child_die, cu); | |
436c571c | 13646 | child_die = child_die->sibling; |
c906108c SS |
13647 | } |
13648 | } | |
13649 | ||
d389af10 JK |
13650 | inherit_abstract_dies (die, cu); |
13651 | ||
4a811a97 UW |
13652 | /* If we have a DW_AT_specification, we might need to import using |
13653 | directives from the context of the specification DIE. See the | |
13654 | comment in determine_prefix. */ | |
13655 | if (cu->language == language_cplus | |
13656 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13657 | { | |
13658 | struct dwarf2_cu *spec_cu = cu; | |
13659 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13660 | ||
13661 | while (spec_die) | |
13662 | { | |
13663 | child_die = spec_die->child; | |
13664 | while (child_die && child_die->tag) | |
13665 | { | |
13666 | if (child_die->tag == DW_TAG_imported_module) | |
13667 | process_die (child_die, spec_cu); | |
436c571c | 13668 | child_die = child_die->sibling; |
4a811a97 UW |
13669 | } |
13670 | ||
13671 | /* In some cases, GCC generates specification DIEs that | |
13672 | themselves contain DW_AT_specification attributes. */ | |
13673 | spec_die = die_specification (spec_die, &spec_cu); | |
13674 | } | |
13675 | } | |
13676 | ||
c24bdb02 | 13677 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13678 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13679 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13680 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13681 | |
df8a16a1 | 13682 | /* For C++, set the block's scope. */ |
45280282 IB |
13683 | if ((cu->language == language_cplus |
13684 | || cu->language == language_fortran | |
c44af4eb TT |
13685 | || cu->language == language_d |
13686 | || cu->language == language_rust) | |
4d4ec4e5 | 13687 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13688 | block_set_scope (block, determine_prefix (die, cu), |
13689 | &objfile->objfile_obstack); | |
df8a16a1 | 13690 | |
801e3a5b JB |
13691 | /* If we have address ranges, record them. */ |
13692 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13693 | |
a60f3166 | 13694 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13695 | |
34eaf542 | 13696 | /* Attach template arguments to function. */ |
2f4732b0 | 13697 | if (!template_args.empty ()) |
34eaf542 TT |
13698 | { |
13699 | gdb_assert (templ_func != NULL); | |
13700 | ||
2f4732b0 | 13701 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13702 | templ_func->template_arguments |
8d749320 SM |
13703 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13704 | templ_func->n_template_arguments); | |
34eaf542 | 13705 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13706 | template_args.data (), |
34eaf542 | 13707 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13708 | |
13709 | /* Make sure that the symtab is set on the new symbols. Even | |
13710 | though they don't appear in this symtab directly, other parts | |
13711 | of gdb assume that symbols do, and this is reasonably | |
13712 | true. */ | |
8634679f | 13713 | for (symbol *sym : template_args) |
3e1d3d8c | 13714 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13715 | } |
13716 | ||
208d8187 JB |
13717 | /* In C++, we can have functions nested inside functions (e.g., when |
13718 | a function declares a class that has methods). This means that | |
13719 | when we finish processing a function scope, we may need to go | |
13720 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13721 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13722 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13723 | |
921e78cf JB |
13724 | /* If we've finished processing a top-level function, subsequent |
13725 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13726 | if (cu->get_builder ()->outermost_context_p ()) |
13727 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13728 | } |
13729 | ||
13730 | /* Process all the DIES contained within a lexical block scope. Start | |
13731 | a new scope, process the dies, and then close the scope. */ | |
13732 | ||
13733 | static void | |
e7c27a73 | 13734 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13735 | { |
5e22e966 | 13736 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13737 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13738 | CORE_ADDR lowpc, highpc; |
13739 | struct die_info *child_die; | |
e142c38c DJ |
13740 | CORE_ADDR baseaddr; |
13741 | ||
b3b3bada | 13742 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13743 | |
13744 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13745 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13746 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13747 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13748 | describe ranges. */ |
e385593e JK |
13749 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13750 | { | |
13751 | case PC_BOUNDS_NOT_PRESENT: | |
13752 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13753 | there was no wrapping by that DW_TAG_lexical_block. | |
13754 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13755 | for (child_die = die->child; | |
13756 | child_die != NULL && child_die->tag; | |
436c571c | 13757 | child_die = child_die->sibling) |
4f7bc5ed TT |
13758 | { |
13759 | /* We might already be processing this DIE. This can happen | |
13760 | in an unusual circumstance -- where a subroutine A | |
13761 | appears lexically in another subroutine B, but A actually | |
13762 | inlines B. The recursion is broken here, rather than in | |
13763 | inherit_abstract_dies, because it seems better to simply | |
13764 | drop concrete children here. */ | |
13765 | if (!child_die->in_process) | |
13766 | process_die (child_die, cu); | |
13767 | } | |
e385593e JK |
13768 | return; |
13769 | case PC_BOUNDS_INVALID: | |
13770 | return; | |
13771 | } | |
3e29f34a MR |
13772 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13773 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13774 | |
c24bdb02 | 13775 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13776 | if (die->child != NULL) |
c906108c | 13777 | { |
639d11d3 | 13778 | child_die = die->child; |
c906108c SS |
13779 | while (child_die && child_die->tag) |
13780 | { | |
e7c27a73 | 13781 | process_die (child_die, cu); |
436c571c | 13782 | child_die = child_die->sibling; |
c906108c SS |
13783 | } |
13784 | } | |
3ea89b92 | 13785 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13786 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13787 | |
c24bdb02 KS |
13788 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13789 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13790 | { |
801e3a5b | 13791 | struct block *block |
c24bdb02 | 13792 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13793 | cstk.start_addr, highpc); |
801e3a5b JB |
13794 | |
13795 | /* Note that recording ranges after traversing children, as we | |
13796 | do here, means that recording a parent's ranges entails | |
13797 | walking across all its children's ranges as they appear in | |
13798 | the address map, which is quadratic behavior. | |
13799 | ||
13800 | It would be nicer to record the parent's ranges before | |
13801 | traversing its children, simply overriding whatever you find | |
13802 | there. But since we don't even decide whether to create a | |
13803 | block until after we've traversed its children, that's hard | |
13804 | to do. */ | |
13805 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13806 | } |
c24bdb02 KS |
13807 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13808 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13809 | } |
13810 | ||
216f72a1 | 13811 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13812 | |
13813 | static void | |
13814 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13815 | { | |
5e22e966 | 13816 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 13817 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 13818 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13819 | CORE_ADDR pc, baseaddr; |
13820 | struct attribute *attr; | |
13821 | struct call_site *call_site, call_site_local; | |
13822 | void **slot; | |
13823 | int nparams; | |
13824 | struct die_info *child_die; | |
13825 | ||
b3b3bada | 13826 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13827 | |
216f72a1 JK |
13828 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13829 | if (attr == NULL) | |
13830 | { | |
13831 | /* This was a pre-DWARF-5 GNU extension alias | |
13832 | for DW_AT_call_return_pc. */ | |
13833 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13834 | } | |
96408a79 SA |
13835 | if (!attr) |
13836 | { | |
b98664d3 | 13837 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13838 | "DIE %s [in module %s]"), |
13839 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13840 | return; |
13841 | } | |
cd6c91b4 | 13842 | pc = attr->value_as_address () + baseaddr; |
3e29f34a | 13843 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13844 | |
13845 | if (cu->call_site_htab == NULL) | |
13846 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13847 | NULL, &objfile->objfile_obstack, | |
13848 | hashtab_obstack_allocate, NULL); | |
13849 | call_site_local.pc = pc; | |
13850 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13851 | if (*slot != NULL) | |
13852 | { | |
b98664d3 | 13853 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13854 | "DIE %s [in module %s]"), |
13855 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13856 | objfile_name (objfile)); |
96408a79 SA |
13857 | return; |
13858 | } | |
13859 | ||
13860 | /* Count parameters at the caller. */ | |
13861 | ||
13862 | nparams = 0; | |
13863 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13864 | child_die = child_die->sibling) |
96408a79 | 13865 | { |
216f72a1 JK |
13866 | if (child_die->tag != DW_TAG_call_site_parameter |
13867 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13868 | { |
b98664d3 | 13869 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13870 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13871 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13872 | objfile_name (objfile)); |
96408a79 SA |
13873 | continue; |
13874 | } | |
13875 | ||
13876 | nparams++; | |
13877 | } | |
13878 | ||
224c3ddb SM |
13879 | call_site |
13880 | = ((struct call_site *) | |
13881 | obstack_alloc (&objfile->objfile_obstack, | |
13882 | sizeof (*call_site) | |
13883 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13884 | *slot = call_site; |
13885 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13886 | call_site->pc = pc; | |
13887 | ||
216f72a1 JK |
13888 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13889 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13890 | { |
13891 | struct die_info *func_die; | |
13892 | ||
13893 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13894 | for (func_die = die->parent; | |
13895 | func_die && func_die->tag != DW_TAG_subprogram | |
13896 | && func_die->tag != DW_TAG_subroutine_type; | |
13897 | func_die = func_die->parent); | |
13898 | ||
216f72a1 JK |
13899 | /* DW_AT_call_all_calls is a superset |
13900 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13901 | if (func_die |
216f72a1 | 13902 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13903 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13904 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13905 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13906 | { | |
13907 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13908 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13909 | both the initial caller containing the real return address PC and | |
13910 | the final callee containing the current PC of a chain of tail | |
13911 | calls do not need to have the tail call list complete. But any | |
13912 | function candidate for a virtual tail call frame searched via | |
13913 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13914 | determined unambiguously. */ | |
13915 | } | |
13916 | else | |
13917 | { | |
13918 | struct type *func_type = NULL; | |
13919 | ||
13920 | if (func_die) | |
13921 | func_type = get_die_type (func_die, cu); | |
13922 | if (func_type != NULL) | |
13923 | { | |
78134374 | 13924 | gdb_assert (func_type->code () == TYPE_CODE_FUNC); |
96408a79 SA |
13925 | |
13926 | /* Enlist this call site to the function. */ | |
13927 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13928 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13929 | } | |
13930 | else | |
b98664d3 | 13931 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13932 | "DIE %s [in module %s]"), |
13933 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13934 | } |
13935 | } | |
13936 | ||
216f72a1 JK |
13937 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13938 | if (attr == NULL) | |
13939 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13940 | if (attr == NULL) | |
13941 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13942 | if (attr == NULL) |
216f72a1 JK |
13943 | { |
13944 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13945 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13946 | } | |
96408a79 | 13947 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
4fc6c0d5 | 13948 | if (!attr || (attr->form_is_block () && DW_BLOCK (attr)->size == 0)) |
96408a79 | 13949 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13950 | else if (attr->form_is_block ()) |
96408a79 SA |
13951 | { |
13952 | struct dwarf2_locexpr_baton *dlbaton; | |
13953 | ||
8d749320 | 13954 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
13955 | dlbaton->data = DW_BLOCK (attr)->data; |
13956 | dlbaton->size = DW_BLOCK (attr)->size; | |
a50264ba | 13957 | dlbaton->per_objfile = per_objfile; |
96408a79 SA |
13958 | dlbaton->per_cu = cu->per_cu; |
13959 | ||
13960 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13961 | } | |
cd6c91b4 | 13962 | else if (attr->form_is_ref ()) |
96408a79 | 13963 | { |
96408a79 SA |
13964 | struct dwarf2_cu *target_cu = cu; |
13965 | struct die_info *target_die; | |
13966 | ||
ac9ec31b | 13967 | target_die = follow_die_ref (die, attr, &target_cu); |
5e22e966 | 13968 | gdb_assert (target_cu->per_objfile->objfile == objfile); |
96408a79 SA |
13969 | if (die_is_declaration (target_die, target_cu)) |
13970 | { | |
7d45c7c3 | 13971 | const char *target_physname; |
9112db09 JK |
13972 | |
13973 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13974 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13975 | if (target_physname == NULL) |
9112db09 | 13976 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13977 | if (target_physname == NULL) |
b98664d3 | 13978 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13979 | "physname, for referencing DIE %s [in module %s]"), |
13980 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13981 | else |
7d455152 | 13982 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13983 | } |
13984 | else | |
13985 | { | |
13986 | CORE_ADDR lowpc; | |
13987 | ||
13988 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13989 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13990 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13991 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13992 | "low pc, for referencing DIE %s [in module %s]"), |
13993 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13994 | else |
3e29f34a MR |
13995 | { |
13996 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13997 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13998 | } | |
96408a79 SA |
13999 | } |
14000 | } | |
14001 | else | |
b98664d3 | 14002 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
14003 | "block nor reference, for DIE %s [in module %s]"), |
14004 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14005 | |
14006 | call_site->per_cu = cu->per_cu; | |
9f47c707 | 14007 | call_site->per_objfile = per_objfile; |
96408a79 SA |
14008 | |
14009 | for (child_die = die->child; | |
14010 | child_die && child_die->tag; | |
436c571c | 14011 | child_die = child_die->sibling) |
96408a79 | 14012 | { |
96408a79 | 14013 | struct call_site_parameter *parameter; |
1788b2d3 | 14014 | struct attribute *loc, *origin; |
96408a79 | 14015 | |
216f72a1 JK |
14016 | if (child_die->tag != DW_TAG_call_site_parameter |
14017 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14018 | { |
14019 | /* Already printed the complaint above. */ | |
14020 | continue; | |
14021 | } | |
14022 | ||
14023 | gdb_assert (call_site->parameter_count < nparams); | |
14024 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14025 | ||
1788b2d3 JK |
14026 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14027 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14028 | register is contained in DW_AT_call_value. */ |
96408a79 | 14029 | |
24c5c679 | 14030 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14031 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14032 | if (origin == NULL) | |
14033 | { | |
14034 | /* This was a pre-DWARF-5 GNU extension alias | |
14035 | for DW_AT_call_parameter. */ | |
14036 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14037 | } | |
cd6c91b4 | 14038 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 14039 | { |
1788b2d3 | 14040 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 14041 | |
0826b30a | 14042 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 14043 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
14044 | { |
14045 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14046 | binding can be done only inside one CU. Such referenced DIE | |
14047 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 14048 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14049 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14050 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14051 | objfile_name (objfile)); |
d76b7dbc JK |
14052 | continue; |
14053 | } | |
9c541725 PA |
14054 | parameter->u.param_cu_off |
14055 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 14056 | } |
4fc6c0d5 | 14057 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 14058 | { |
b98664d3 | 14059 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
14060 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14061 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14062 | continue; |
14063 | } | |
24c5c679 | 14064 | else |
96408a79 | 14065 | { |
24c5c679 JK |
14066 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
14067 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
14068 | if (parameter->u.dwarf_reg != -1) | |
14069 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
14070 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
14071 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
14072 | ¶meter->u.fb_offset)) | |
14073 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14074 | else | |
14075 | { | |
b98664d3 | 14076 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 14077 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 14078 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14079 | "[in module %s]"), |
9d8780f0 | 14080 | sect_offset_str (child_die->sect_off), |
9c541725 | 14081 | objfile_name (objfile)); |
24c5c679 JK |
14082 | continue; |
14083 | } | |
96408a79 SA |
14084 | } |
14085 | ||
216f72a1 JK |
14086 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14087 | if (attr == NULL) | |
14088 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 14089 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 14090 | { |
b98664d3 | 14091 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14092 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14093 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14094 | objfile_name (objfile)); |
96408a79 SA |
14095 | continue; |
14096 | } | |
14097 | parameter->value = DW_BLOCK (attr)->data; | |
14098 | parameter->value_size = DW_BLOCK (attr)->size; | |
14099 | ||
14100 | /* Parameters are not pre-cleared by memset above. */ | |
14101 | parameter->data_value = NULL; | |
14102 | parameter->data_value_size = 0; | |
14103 | call_site->parameter_count++; | |
14104 | ||
216f72a1 JK |
14105 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14106 | if (attr == NULL) | |
14107 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 14108 | if (attr != nullptr) |
96408a79 | 14109 | { |
4fc6c0d5 | 14110 | if (!attr->form_is_block ()) |
b98664d3 | 14111 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14112 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14113 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14114 | objfile_name (objfile)); |
96408a79 SA |
14115 | else |
14116 | { | |
14117 | parameter->data_value = DW_BLOCK (attr)->data; | |
14118 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
14119 | } | |
14120 | } | |
14121 | } | |
14122 | } | |
14123 | ||
71a3c369 TT |
14124 | /* Helper function for read_variable. If DIE represents a virtual |
14125 | table, then return the type of the concrete object that is | |
14126 | associated with the virtual table. Otherwise, return NULL. */ | |
14127 | ||
14128 | static struct type * | |
14129 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14130 | { | |
14131 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14132 | if (attr == NULL) | |
14133 | return NULL; | |
14134 | ||
14135 | /* Find the type DIE. */ | |
14136 | struct die_info *type_die = NULL; | |
14137 | struct dwarf2_cu *type_cu = cu; | |
14138 | ||
cd6c91b4 | 14139 | if (attr->form_is_ref ()) |
71a3c369 TT |
14140 | type_die = follow_die_ref (die, attr, &type_cu); |
14141 | if (type_die == NULL) | |
14142 | return NULL; | |
14143 | ||
14144 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14145 | return NULL; | |
14146 | return die_containing_type (type_die, type_cu); | |
14147 | } | |
14148 | ||
14149 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14150 | ||
14151 | static void | |
14152 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14153 | { | |
14154 | struct rust_vtable_symbol *storage = NULL; | |
14155 | ||
14156 | if (cu->language == language_rust) | |
14157 | { | |
14158 | struct type *containing_type = rust_containing_type (die, cu); | |
14159 | ||
14160 | if (containing_type != NULL) | |
14161 | { | |
5e22e966 | 14162 | struct objfile *objfile = cu->per_objfile->objfile; |
71a3c369 | 14163 | |
8c14c3a3 | 14164 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol; |
71a3c369 | 14165 | storage->concrete_type = containing_type; |
cf724bc9 | 14166 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14167 | } |
14168 | } | |
14169 | ||
e4a62c65 TV |
14170 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
14171 | struct attribute *abstract_origin | |
14172 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14173 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
14174 | if (res == NULL && loc && abstract_origin) | |
14175 | { | |
14176 | /* We have a variable without a name, but with a location and an abstract | |
14177 | origin. This may be a concrete instance of an abstract variable | |
14178 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
14179 | later. */ | |
14180 | struct dwarf2_cu *origin_cu = cu; | |
14181 | struct die_info *origin_die | |
14182 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
5e22e966 SM |
14183 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14184 | per_objfile->per_bfd->abstract_to_concrete | |
14185 | [origin_die->sect_off].push_back (die->sect_off); | |
e4a62c65 | 14186 | } |
71a3c369 TT |
14187 | } |
14188 | ||
43988095 JK |
14189 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14190 | reading .debug_rnglists. | |
14191 | Callback's type should be: | |
14192 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14193 | Return true if the attributes are present and valid, otherwise, | |
14194 | return false. */ | |
14195 | ||
14196 | template <typename Callback> | |
14197 | static bool | |
14198 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
d0ce17d8 | 14199 | dwarf_tag tag, Callback &&callback) |
43988095 | 14200 | { |
976ca316 SM |
14201 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14202 | struct objfile *objfile = per_objfile->objfile; | |
43988095 | 14203 | bfd *obfd = objfile->obfd; |
43988095 | 14204 | /* Base address selection entry. */ |
2b24b6e4 | 14205 | gdb::optional<CORE_ADDR> base; |
43988095 | 14206 | const gdb_byte *buffer; |
43988095 JK |
14207 | CORE_ADDR baseaddr; |
14208 | bool overflow = false; | |
d0ce17d8 CT |
14209 | ULONGEST addr_index; |
14210 | struct dwarf2_section_info *rnglists_section; | |
43988095 | 14211 | |
43988095 | 14212 | base = cu->base_address; |
d0ce17d8 CT |
14213 | rnglists_section = cu_debug_rnglists_section (cu, tag); |
14214 | rnglists_section->read (objfile); | |
43988095 | 14215 | |
d0ce17d8 | 14216 | if (offset >= rnglists_section->size) |
43988095 | 14217 | { |
b98664d3 | 14218 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
14219 | offset); |
14220 | return false; | |
14221 | } | |
d0ce17d8 | 14222 | buffer = rnglists_section->buffer + offset; |
43988095 | 14223 | |
b3b3bada | 14224 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
14225 | |
14226 | while (1) | |
14227 | { | |
7814882a JK |
14228 | /* Initialize it due to a false compiler warning. */ |
14229 | CORE_ADDR range_beginning = 0, range_end = 0; | |
d0ce17d8 CT |
14230 | const gdb_byte *buf_end = (rnglists_section->buffer |
14231 | + rnglists_section->size); | |
43988095 JK |
14232 | unsigned int bytes_read; |
14233 | ||
14234 | if (buffer == buf_end) | |
14235 | { | |
14236 | overflow = true; | |
14237 | break; | |
14238 | } | |
14239 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14240 | switch (rlet) | |
14241 | { | |
14242 | case DW_RLE_end_of_list: | |
14243 | break; | |
14244 | case DW_RLE_base_address: | |
14245 | if (buffer + cu->header.addr_size > buf_end) | |
14246 | { | |
14247 | overflow = true; | |
14248 | break; | |
14249 | } | |
c8a7a66f | 14250 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14251 | buffer += bytes_read; |
14252 | break; | |
d0ce17d8 CT |
14253 | case DW_RLE_base_addressx: |
14254 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14255 | buffer += bytes_read; | |
14256 | base = read_addr_index (cu, addr_index); | |
14257 | break; | |
43988095 JK |
14258 | case DW_RLE_start_length: |
14259 | if (buffer + cu->header.addr_size > buf_end) | |
14260 | { | |
14261 | overflow = true; | |
14262 | break; | |
14263 | } | |
c8a7a66f TT |
14264 | range_beginning = cu->header.read_address (obfd, buffer, |
14265 | &bytes_read); | |
43988095 JK |
14266 | buffer += bytes_read; |
14267 | range_end = (range_beginning | |
14268 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14269 | buffer += bytes_read; | |
14270 | if (buffer > buf_end) | |
14271 | { | |
14272 | overflow = true; | |
14273 | break; | |
14274 | } | |
14275 | break; | |
d0ce17d8 CT |
14276 | case DW_RLE_startx_length: |
14277 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14278 | buffer += bytes_read; | |
14279 | range_beginning = read_addr_index (cu, addr_index); | |
14280 | if (buffer > buf_end) | |
14281 | { | |
14282 | overflow = true; | |
14283 | break; | |
14284 | } | |
14285 | range_end = (range_beginning | |
14286 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14287 | buffer += bytes_read; | |
14288 | break; | |
43988095 JK |
14289 | case DW_RLE_offset_pair: |
14290 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14291 | buffer += bytes_read; | |
14292 | if (buffer > buf_end) | |
14293 | { | |
14294 | overflow = true; | |
14295 | break; | |
14296 | } | |
14297 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14298 | buffer += bytes_read; | |
14299 | if (buffer > buf_end) | |
14300 | { | |
14301 | overflow = true; | |
14302 | break; | |
14303 | } | |
14304 | break; | |
14305 | case DW_RLE_start_end: | |
14306 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14307 | { | |
14308 | overflow = true; | |
14309 | break; | |
14310 | } | |
c8a7a66f TT |
14311 | range_beginning = cu->header.read_address (obfd, buffer, |
14312 | &bytes_read); | |
43988095 | 14313 | buffer += bytes_read; |
c8a7a66f | 14314 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14315 | buffer += bytes_read; |
14316 | break; | |
d0ce17d8 CT |
14317 | case DW_RLE_startx_endx: |
14318 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14319 | buffer += bytes_read; | |
14320 | range_beginning = read_addr_index (cu, addr_index); | |
14321 | if (buffer > buf_end) | |
14322 | { | |
14323 | overflow = true; | |
14324 | break; | |
14325 | } | |
14326 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14327 | buffer += bytes_read; | |
14328 | range_end = read_addr_index (cu, addr_index); | |
14329 | break; | |
43988095 | 14330 | default: |
b98664d3 | 14331 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14332 | return false; |
14333 | } | |
14334 | if (rlet == DW_RLE_end_of_list || overflow) | |
14335 | break; | |
14336 | if (rlet == DW_RLE_base_address) | |
14337 | continue; | |
14338 | ||
43988095 JK |
14339 | if (range_beginning > range_end) |
14340 | { | |
14341 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14342 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14343 | return false; |
14344 | } | |
14345 | ||
14346 | /* Empty range entries have no effect. */ | |
14347 | if (range_beginning == range_end) | |
14348 | continue; | |
14349 | ||
d0ce17d8 CT |
14350 | /* Only DW_RLE_offset_pair needs the base address added. */ |
14351 | if (rlet == DW_RLE_offset_pair) | |
14352 | { | |
14353 | if (!base.has_value ()) | |
14354 | { | |
14355 | /* We have no valid base address for the DW_RLE_offset_pair. */ | |
14356 | complaint (_("Invalid .debug_rnglists data (no base address for " | |
14357 | "DW_RLE_offset_pair)")); | |
14358 | return false; | |
14359 | } | |
14360 | ||
14361 | range_beginning += *base; | |
14362 | range_end += *base; | |
14363 | } | |
43988095 JK |
14364 | |
14365 | /* A not-uncommon case of bad debug info. | |
14366 | Don't pollute the addrmap with bad data. */ | |
14367 | if (range_beginning + baseaddr == 0 | |
976ca316 | 14368 | && !per_objfile->per_bfd->has_section_at_zero) |
43988095 | 14369 | { |
b98664d3 | 14370 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14371 | " [in module %s]"), objfile_name (objfile)); |
14372 | continue; | |
14373 | } | |
14374 | ||
14375 | callback (range_beginning, range_end); | |
14376 | } | |
14377 | ||
14378 | if (overflow) | |
14379 | { | |
b98664d3 | 14380 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14381 | "for DW_AT_ranges attribute"), |
14382 | offset); | |
14383 | return false; | |
14384 | } | |
14385 | ||
14386 | return true; | |
14387 | } | |
14388 | ||
14389 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14390 | Callback's type should be: | |
14391 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14392 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14393 | |
43988095 | 14394 | template <typename Callback> |
43039443 | 14395 | static int |
d0ce17d8 | 14396 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, dwarf_tag tag, |
43988095 | 14397 | Callback &&callback) |
43039443 | 14398 | { |
5e22e966 SM |
14399 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14400 | struct objfile *objfile = per_objfile->objfile; | |
43039443 JK |
14401 | struct comp_unit_head *cu_header = &cu->header; |
14402 | bfd *obfd = objfile->obfd; | |
14403 | unsigned int addr_size = cu_header->addr_size; | |
14404 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14405 | /* Base address selection entry. */ | |
2b24b6e4 | 14406 | gdb::optional<CORE_ADDR> base; |
43039443 | 14407 | unsigned int dummy; |
d521ce57 | 14408 | const gdb_byte *buffer; |
ff013f42 | 14409 | CORE_ADDR baseaddr; |
43039443 | 14410 | |
43988095 | 14411 | if (cu_header->version >= 5) |
d0ce17d8 | 14412 | return dwarf2_rnglists_process (offset, cu, tag, callback); |
43988095 | 14413 | |
d00adf39 | 14414 | base = cu->base_address; |
43039443 | 14415 | |
5e22e966 SM |
14416 | per_objfile->per_bfd->ranges.read (objfile); |
14417 | if (offset >= per_objfile->per_bfd->ranges.size) | |
43039443 | 14418 | { |
b98664d3 | 14419 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14420 | offset); |
14421 | return 0; | |
14422 | } | |
5e22e966 | 14423 | buffer = per_objfile->per_bfd->ranges.buffer + offset; |
43039443 | 14424 | |
b3b3bada | 14425 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 14426 | |
43039443 JK |
14427 | while (1) |
14428 | { | |
14429 | CORE_ADDR range_beginning, range_end; | |
14430 | ||
c8a7a66f | 14431 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 14432 | buffer += addr_size; |
c8a7a66f | 14433 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
14434 | buffer += addr_size; |
14435 | offset += 2 * addr_size; | |
14436 | ||
14437 | /* An end of list marker is a pair of zero addresses. */ | |
14438 | if (range_beginning == 0 && range_end == 0) | |
14439 | /* Found the end of list entry. */ | |
14440 | break; | |
14441 | ||
14442 | /* Each base address selection entry is a pair of 2 values. | |
14443 | The first is the largest possible address, the second is | |
14444 | the base address. Check for a base address here. */ | |
14445 | if ((range_beginning & mask) == mask) | |
14446 | { | |
28d2bfb9 AB |
14447 | /* If we found the largest possible address, then we already |
14448 | have the base address in range_end. */ | |
14449 | base = range_end; | |
43039443 JK |
14450 | continue; |
14451 | } | |
14452 | ||
2b24b6e4 | 14453 | if (!base.has_value ()) |
43039443 JK |
14454 | { |
14455 | /* We have no valid base address for the ranges | |
14456 | data. */ | |
b98664d3 | 14457 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14458 | return 0; |
14459 | } | |
14460 | ||
9277c30c UW |
14461 | if (range_beginning > range_end) |
14462 | { | |
14463 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14464 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14465 | return 0; |
14466 | } | |
14467 | ||
14468 | /* Empty range entries have no effect. */ | |
14469 | if (range_beginning == range_end) | |
14470 | continue; | |
14471 | ||
2b24b6e4 TT |
14472 | range_beginning += *base; |
14473 | range_end += *base; | |
43039443 | 14474 | |
01093045 DE |
14475 | /* A not-uncommon case of bad debug info. |
14476 | Don't pollute the addrmap with bad data. */ | |
14477 | if (range_beginning + baseaddr == 0 | |
5e22e966 | 14478 | && !per_objfile->per_bfd->has_section_at_zero) |
01093045 | 14479 | { |
b98664d3 | 14480 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14481 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14482 | continue; |
14483 | } | |
14484 | ||
5f46c5a5 JK |
14485 | callback (range_beginning, range_end); |
14486 | } | |
14487 | ||
14488 | return 1; | |
14489 | } | |
14490 | ||
14491 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14492 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14493 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14494 | ||
14495 | static int | |
14496 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14497 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
d0ce17d8 | 14498 | dwarf2_psymtab *ranges_pst, dwarf_tag tag) |
5f46c5a5 | 14499 | { |
5e22e966 | 14500 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14501 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 14502 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14503 | int low_set = 0; |
14504 | CORE_ADDR low = 0; | |
14505 | CORE_ADDR high = 0; | |
14506 | int retval; | |
14507 | ||
d0ce17d8 | 14508 | retval = dwarf2_ranges_process (offset, cu, tag, |
5f46c5a5 JK |
14509 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) |
14510 | { | |
9277c30c | 14511 | if (ranges_pst != NULL) |
3e29f34a MR |
14512 | { |
14513 | CORE_ADDR lowpc; | |
14514 | CORE_ADDR highpc; | |
14515 | ||
79748972 TT |
14516 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14517 | range_beginning + baseaddr) | |
14518 | - baseaddr); | |
14519 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14520 | range_end + baseaddr) | |
14521 | - baseaddr); | |
d320c2b5 TT |
14522 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
14523 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 14524 | } |
ff013f42 | 14525 | |
43039443 JK |
14526 | /* FIXME: This is recording everything as a low-high |
14527 | segment of consecutive addresses. We should have a | |
14528 | data structure for discontiguous block ranges | |
14529 | instead. */ | |
14530 | if (! low_set) | |
14531 | { | |
14532 | low = range_beginning; | |
14533 | high = range_end; | |
14534 | low_set = 1; | |
14535 | } | |
14536 | else | |
14537 | { | |
14538 | if (range_beginning < low) | |
14539 | low = range_beginning; | |
14540 | if (range_end > high) | |
14541 | high = range_end; | |
14542 | } | |
5f46c5a5 JK |
14543 | }); |
14544 | if (!retval) | |
14545 | return 0; | |
43039443 JK |
14546 | |
14547 | if (! low_set) | |
14548 | /* If the first entry is an end-of-list marker, the range | |
14549 | describes an empty scope, i.e. no instructions. */ | |
14550 | return 0; | |
14551 | ||
14552 | if (low_return) | |
14553 | *low_return = low; | |
14554 | if (high_return) | |
14555 | *high_return = high; | |
14556 | return 1; | |
14557 | } | |
14558 | ||
3a2b436a JK |
14559 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14560 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14561 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14562 | |
3a2b436a | 14563 | static enum pc_bounds_kind |
af34e669 | 14564 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14565 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14566 | dwarf2_psymtab *pst) |
c906108c | 14567 | { |
976ca316 | 14568 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
c906108c | 14569 | struct attribute *attr; |
91da1414 | 14570 | struct attribute *attr_high; |
af34e669 DJ |
14571 | CORE_ADDR low = 0; |
14572 | CORE_ADDR high = 0; | |
e385593e | 14573 | enum pc_bounds_kind ret; |
c906108c | 14574 | |
91da1414 MW |
14575 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14576 | if (attr_high) | |
af34e669 | 14577 | { |
e142c38c | 14578 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14579 | if (attr != nullptr) |
91da1414 | 14580 | { |
cd6c91b4 TT |
14581 | low = attr->value_as_address (); |
14582 | high = attr_high->value_as_address (); | |
14583 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) | |
31aa7e4e | 14584 | high += low; |
91da1414 | 14585 | } |
af34e669 DJ |
14586 | else |
14587 | /* Found high w/o low attribute. */ | |
e385593e | 14588 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14589 | |
14590 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14591 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14592 | } |
c906108c | 14593 | else |
af34e669 | 14594 | { |
e142c38c | 14595 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14596 | if (attr != NULL) |
14597 | { | |
18a8505e | 14598 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 | 14599 | We take advantage of the fact that DW_AT_ranges does not appear |
d0ce17d8 CT |
14600 | in DW_TAG_compile_unit of DWO files. |
14601 | ||
14602 | Attributes of the form DW_FORM_rnglistx have already had their | |
14603 | value changed by read_rnglist_index and already include | |
14604 | DW_AT_rnglists_base, so don't need to add the ranges base, | |
14605 | either. */ | |
14606 | int need_ranges_base = (die->tag != DW_TAG_compile_unit | |
14607 | && attr->form != DW_FORM_rnglistx); | |
ab435259 DE |
14608 | unsigned int ranges_offset = (DW_UNSND (attr) |
14609 | + (need_ranges_base | |
14610 | ? cu->ranges_base | |
14611 | : 0)); | |
2e3cf129 | 14612 | |
af34e669 | 14613 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14614 | .debug_ranges section. */ |
d0ce17d8 CT |
14615 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst, |
14616 | die->tag)) | |
e385593e | 14617 | return PC_BOUNDS_INVALID; |
43039443 | 14618 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14619 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14620 | } |
e385593e JK |
14621 | else |
14622 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14623 | } |
c906108c | 14624 | |
48fbe735 | 14625 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14626 | if (high <= low) |
e385593e | 14627 | return PC_BOUNDS_INVALID; |
c906108c SS |
14628 | |
14629 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14630 | eliminate duplicate copies of functions and vtables and such. | |
14631 | The linker will arbitrarily choose one and discard the others. | |
14632 | The AT_*_pc values for such functions refer to local labels in | |
14633 | these sections. If the section from that file was discarded, the | |
14634 | labels are not in the output, so the relocs get a value of 0. | |
14635 | If this is a discarded function, mark the pc bounds as invalid, | |
14636 | so that GDB will ignore it. */ | |
976ca316 | 14637 | if (low == 0 && !per_objfile->per_bfd->has_section_at_zero) |
e385593e | 14638 | return PC_BOUNDS_INVALID; |
c906108c SS |
14639 | |
14640 | *lowpc = low; | |
96408a79 SA |
14641 | if (highpc) |
14642 | *highpc = high; | |
af34e669 | 14643 | return ret; |
c906108c SS |
14644 | } |
14645 | ||
b084d499 JB |
14646 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14647 | its low and high PC addresses. Do nothing if these addresses could not | |
14648 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14649 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14650 | ||
14651 | static void | |
14652 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14653 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14654 | struct dwarf2_cu *cu) | |
14655 | { | |
14656 | CORE_ADDR low, high; | |
14657 | struct die_info *child = die->child; | |
14658 | ||
e385593e | 14659 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14660 | { |
325fac50 PA |
14661 | *lowpc = std::min (*lowpc, low); |
14662 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14663 | } |
14664 | ||
14665 | /* If the language does not allow nested subprograms (either inside | |
14666 | subprograms or lexical blocks), we're done. */ | |
14667 | if (cu->language != language_ada) | |
14668 | return; | |
6e70227d | 14669 | |
b084d499 JB |
14670 | /* Check all the children of the given DIE. If it contains nested |
14671 | subprograms, then check their pc bounds. Likewise, we need to | |
14672 | check lexical blocks as well, as they may also contain subprogram | |
14673 | definitions. */ | |
14674 | while (child && child->tag) | |
14675 | { | |
14676 | if (child->tag == DW_TAG_subprogram | |
14677 | || child->tag == DW_TAG_lexical_block) | |
14678 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 14679 | child = child->sibling; |
b084d499 JB |
14680 | } |
14681 | } | |
14682 | ||
fae299cd DC |
14683 | /* Get the low and high pc's represented by the scope DIE, and store |
14684 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14685 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14686 | ||
14687 | static void | |
14688 | get_scope_pc_bounds (struct die_info *die, | |
14689 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14690 | struct dwarf2_cu *cu) | |
14691 | { | |
14692 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14693 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14694 | CORE_ADDR current_low, current_high; | |
14695 | ||
3a2b436a | 14696 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14697 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14698 | { |
14699 | best_low = current_low; | |
14700 | best_high = current_high; | |
14701 | } | |
14702 | else | |
14703 | { | |
14704 | struct die_info *child = die->child; | |
14705 | ||
14706 | while (child && child->tag) | |
14707 | { | |
14708 | switch (child->tag) { | |
14709 | case DW_TAG_subprogram: | |
b084d499 | 14710 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14711 | break; |
14712 | case DW_TAG_namespace: | |
f55ee35c | 14713 | case DW_TAG_module: |
fae299cd DC |
14714 | /* FIXME: carlton/2004-01-16: Should we do this for |
14715 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14716 | that current GCC's always emit the DIEs corresponding | |
14717 | to definitions of methods of classes as children of a | |
14718 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14719 | the DIEs giving the declarations, which could be | |
14720 | anywhere). But I don't see any reason why the | |
14721 | standards says that they have to be there. */ | |
14722 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14723 | ||
14724 | if (current_low != ((CORE_ADDR) -1)) | |
14725 | { | |
325fac50 PA |
14726 | best_low = std::min (best_low, current_low); |
14727 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14728 | } |
14729 | break; | |
14730 | default: | |
0963b4bd | 14731 | /* Ignore. */ |
fae299cd DC |
14732 | break; |
14733 | } | |
14734 | ||
436c571c | 14735 | child = child->sibling; |
fae299cd DC |
14736 | } |
14737 | } | |
14738 | ||
14739 | *lowpc = best_low; | |
14740 | *highpc = best_high; | |
14741 | } | |
14742 | ||
801e3a5b JB |
14743 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14744 | in DIE. */ | |
380bca97 | 14745 | |
801e3a5b JB |
14746 | static void |
14747 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14748 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14749 | { | |
5e22e966 | 14750 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14751 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14752 | struct attribute *attr; |
91da1414 | 14753 | struct attribute *attr_high; |
801e3a5b | 14754 | |
91da1414 MW |
14755 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14756 | if (attr_high) | |
801e3a5b | 14757 | { |
801e3a5b | 14758 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14759 | if (attr != nullptr) |
801e3a5b | 14760 | { |
cd6c91b4 TT |
14761 | CORE_ADDR low = attr->value_as_address (); |
14762 | CORE_ADDR high = attr_high->value_as_address (); | |
31aa7e4e | 14763 | |
cd6c91b4 | 14764 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14765 | high += low; |
9a619af0 | 14766 | |
3e29f34a MR |
14767 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14768 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14769 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
14770 | } |
14771 | } | |
14772 | ||
14773 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
435d3d88 | 14774 | if (attr != nullptr) |
801e3a5b | 14775 | { |
18a8505e | 14776 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 | 14777 | We take advantage of the fact that DW_AT_ranges does not appear |
d0ce17d8 CT |
14778 | in DW_TAG_compile_unit of DWO files. |
14779 | ||
14780 | Attributes of the form DW_FORM_rnglistx have already had their | |
14781 | value changed by read_rnglist_index and already include | |
14782 | DW_AT_rnglists_base, so don't need to add the ranges base, | |
14783 | either. */ | |
14784 | int need_ranges_base = (die->tag != DW_TAG_compile_unit | |
14785 | && attr->form != DW_FORM_rnglistx); | |
801e3a5b JB |
14786 | |
14787 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14788 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14789 | unsigned long offset = (DW_UNSND (attr) |
14790 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14791 | |
2d5f09ec | 14792 | std::vector<blockrange> blockvec; |
d0ce17d8 | 14793 | dwarf2_ranges_process (offset, cu, die->tag, |
5f46c5a5 JK |
14794 | [&] (CORE_ADDR start, CORE_ADDR end) |
14795 | { | |
58fdfd2c JK |
14796 | start += baseaddr; |
14797 | end += baseaddr; | |
5f46c5a5 JK |
14798 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14799 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14800 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14801 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14802 | }); |
2d5f09ec KB |
14803 | |
14804 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14805 | } |
14806 | } | |
14807 | ||
685b1105 JK |
14808 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14809 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14810 | |
685b1105 JK |
14811 | static void |
14812 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14813 | { |
38360086 | 14814 | int major, minor; |
60d5a603 JK |
14815 | |
14816 | if (cu->producer == NULL) | |
14817 | { | |
14818 | /* For unknown compilers expect their behavior is DWARF version | |
14819 | compliant. | |
14820 | ||
14821 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14822 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14823 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14824 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14825 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14826 | } |
b1ffba5a | 14827 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14828 | { |
38360086 MW |
14829 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14830 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14831 | } |
5230b05a | 14832 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14833 | { |
14834 | cu->producer_is_icc = true; | |
14835 | cu->producer_is_icc_lt_14 = major < 14; | |
14836 | } | |
c258c396 JD |
14837 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14838 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14839 | else |
14840 | { | |
14841 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14842 | compliant. */ | |
60d5a603 JK |
14843 | } |
14844 | ||
9068261f | 14845 | cu->checked_producer = true; |
685b1105 | 14846 | } |
ba919b58 | 14847 | |
685b1105 JK |
14848 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14849 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14850 | during 4.6.0 experimental. */ | |
14851 | ||
9068261f | 14852 | static bool |
685b1105 JK |
14853 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14854 | { | |
14855 | if (!cu->checked_producer) | |
14856 | check_producer (cu); | |
14857 | ||
14858 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14859 | } |
14860 | ||
c258c396 JD |
14861 | |
14862 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14863 | with incorrect is_stmt attributes. */ | |
14864 | ||
14865 | static bool | |
14866 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14867 | { | |
14868 | if (!cu->checked_producer) | |
14869 | check_producer (cu); | |
14870 | ||
14871 | return cu->producer_is_codewarrior; | |
14872 | } | |
14873 | ||
405feb71 | 14874 | /* Return the default accessibility type if it is not overridden by |
60d5a603 JK |
14875 | DW_AT_accessibility. */ |
14876 | ||
14877 | static enum dwarf_access_attribute | |
14878 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14879 | { | |
14880 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14881 | { | |
14882 | /* The default DWARF 2 accessibility for members is public, the default | |
14883 | accessibility for inheritance is private. */ | |
14884 | ||
14885 | if (die->tag != DW_TAG_inheritance) | |
14886 | return DW_ACCESS_public; | |
14887 | else | |
14888 | return DW_ACCESS_private; | |
14889 | } | |
14890 | else | |
14891 | { | |
14892 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14893 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14894 | depends on the container kind. */ | |
14895 | ||
14896 | if (die->parent->tag == DW_TAG_class_type) | |
14897 | return DW_ACCESS_private; | |
14898 | else | |
14899 | return DW_ACCESS_public; | |
14900 | } | |
14901 | } | |
14902 | ||
74ac6d43 TT |
14903 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14904 | offset. If the attribute was not found return 0, otherwise return | |
14905 | 1. If it was found but could not properly be handled, set *OFFSET | |
14906 | to 0. */ | |
14907 | ||
14908 | static int | |
14909 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14910 | LONGEST *offset) | |
14911 | { | |
14912 | struct attribute *attr; | |
14913 | ||
14914 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14915 | if (attr != NULL) | |
14916 | { | |
14917 | *offset = 0; | |
14918 | ||
14919 | /* Note that we do not check for a section offset first here. | |
14920 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14921 | so if we see it, we can assume that a constant form is really | |
14922 | a constant and not a section offset. */ | |
cd6c91b4 | 14923 | if (attr->form_is_constant ()) |
0826b30a | 14924 | *offset = attr->constant_value (0); |
cd6c91b4 | 14925 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14926 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14927 | else if (attr->form_is_block ()) |
74ac6d43 TT |
14928 | *offset = decode_locdesc (DW_BLOCK (attr), cu); |
14929 | else | |
14930 | dwarf2_complex_location_expr_complaint (); | |
14931 | ||
14932 | return 1; | |
14933 | } | |
14934 | ||
14935 | return 0; | |
14936 | } | |
14937 | ||
7d79de9a TT |
14938 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
14939 | ||
14940 | static void | |
14941 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14942 | struct field *field) | |
14943 | { | |
14944 | struct attribute *attr; | |
14945 | ||
14946 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14947 | if (attr != NULL) | |
14948 | { | |
14949 | if (attr->form_is_constant ()) | |
14950 | { | |
14951 | LONGEST offset = attr->constant_value (0); | |
14952 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14953 | } | |
14954 | else if (attr->form_is_section_offset ()) | |
14955 | dwarf2_complex_location_expr_complaint (); | |
14956 | else if (attr->form_is_block ()) | |
14957 | { | |
14958 | bool handled; | |
14959 | CORE_ADDR offset = decode_locdesc (DW_BLOCK (attr), cu, &handled); | |
14960 | if (handled) | |
14961 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14962 | else | |
14963 | { | |
5e22e966 SM |
14964 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14965 | struct objfile *objfile = per_objfile->objfile; | |
7d79de9a TT |
14966 | struct dwarf2_locexpr_baton *dlbaton |
14967 | = XOBNEW (&objfile->objfile_obstack, | |
14968 | struct dwarf2_locexpr_baton); | |
14969 | dlbaton->data = DW_BLOCK (attr)->data; | |
14970 | dlbaton->size = DW_BLOCK (attr)->size; | |
14971 | /* When using this baton, we want to compute the address | |
14972 | of the field, not the value. This is why | |
14973 | is_reference is set to false here. */ | |
14974 | dlbaton->is_reference = false; | |
5e22e966 | 14975 | dlbaton->per_objfile = per_objfile; |
7d79de9a TT |
14976 | dlbaton->per_cu = cu->per_cu; |
14977 | ||
14978 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
14979 | } | |
14980 | } | |
14981 | else | |
14982 | dwarf2_complex_location_expr_complaint (); | |
14983 | } | |
14984 | } | |
14985 | ||
c906108c SS |
14986 | /* Add an aggregate field to the field list. */ |
14987 | ||
14988 | static void | |
107d2387 | 14989 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14990 | struct dwarf2_cu *cu) |
6e70227d | 14991 | { |
5e22e966 | 14992 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14993 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
14994 | struct nextfield *new_field; |
14995 | struct attribute *attr; | |
14996 | struct field *fp; | |
15d034d0 | 14997 | const char *fieldname = ""; |
c906108c | 14998 | |
7d0ccb61 DJ |
14999 | if (die->tag == DW_TAG_inheritance) |
15000 | { | |
be2daae6 TT |
15001 | fip->baseclasses.emplace_back (); |
15002 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
15003 | } |
15004 | else | |
15005 | { | |
be2daae6 TT |
15006 | fip->fields.emplace_back (); |
15007 | new_field = &fip->fields.back (); | |
7d0ccb61 | 15008 | } |
be2daae6 | 15009 | |
9c6a1327 TT |
15010 | new_field->offset = die->sect_off; |
15011 | ||
e142c38c | 15012 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 15013 | if (attr != nullptr) |
c906108c | 15014 | new_field->accessibility = DW_UNSND (attr); |
60d5a603 JK |
15015 | else |
15016 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c | 15017 | if (new_field->accessibility != DW_ACCESS_public) |
264fc0e2 | 15018 | fip->non_public_fields = true; |
60d5a603 | 15019 | |
e142c38c | 15020 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 15021 | if (attr != nullptr) |
c906108c | 15022 | new_field->virtuality = DW_UNSND (attr); |
60d5a603 JK |
15023 | else |
15024 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15025 | |
15026 | fp = &new_field->field; | |
a9a9bd0f | 15027 | |
e142c38c | 15028 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15029 | { |
a9a9bd0f | 15030 | /* Data member other than a C++ static data member. */ |
6e70227d | 15031 | |
c906108c | 15032 | /* Get type of field. */ |
5d14b6e5 | 15033 | fp->set_type (die_type (die, cu)); |
c906108c | 15034 | |
d6a843b5 | 15035 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15036 | |
c906108c | 15037 | /* Get bit size of field (zero if none). */ |
e142c38c | 15038 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 15039 | if (attr != nullptr) |
c906108c SS |
15040 | { |
15041 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
15042 | } | |
15043 | else | |
15044 | { | |
15045 | FIELD_BITSIZE (*fp) = 0; | |
15046 | } | |
15047 | ||
15048 | /* Get bit offset of field. */ | |
7d79de9a | 15049 | handle_data_member_location (die, cu, fp); |
e142c38c | 15050 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
435d3d88 | 15051 | if (attr != nullptr) |
c906108c | 15052 | { |
d5a22e77 | 15053 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
15054 | { |
15055 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
15056 | additional bit offset from the MSB of the containing |
15057 | anonymous object to the MSB of the field. We don't | |
15058 | have to do anything special since we don't need to | |
15059 | know the size of the anonymous object. */ | |
f41f5e61 | 15060 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
15061 | } |
15062 | else | |
15063 | { | |
15064 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
15065 | MSB of the anonymous object, subtract off the number of |
15066 | bits from the MSB of the field to the MSB of the | |
15067 | object, and then subtract off the number of bits of | |
15068 | the field itself. The result is the bit offset of | |
15069 | the LSB of the field. */ | |
c906108c SS |
15070 | int anonymous_size; |
15071 | int bit_offset = DW_UNSND (attr); | |
15072 | ||
e142c38c | 15073 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15074 | if (attr != nullptr) |
c906108c SS |
15075 | { |
15076 | /* The size of the anonymous object containing | |
15077 | the bit field is explicit, so use the | |
15078 | indicated size (in bytes). */ | |
15079 | anonymous_size = DW_UNSND (attr); | |
15080 | } | |
15081 | else | |
15082 | { | |
15083 | /* The size of the anonymous object containing | |
15084 | the bit field must be inferred from the type | |
15085 | attribute of the data member containing the | |
15086 | bit field. */ | |
5d14b6e5 | 15087 | anonymous_size = TYPE_LENGTH (fp->type ()); |
c906108c | 15088 | } |
f41f5e61 PA |
15089 | SET_FIELD_BITPOS (*fp, |
15090 | (FIELD_BITPOS (*fp) | |
15091 | + anonymous_size * bits_per_byte | |
15092 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15093 | } |
15094 | } | |
da5b30da AA |
15095 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15096 | if (attr != NULL) | |
15097 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 15098 | + attr->constant_value (0))); |
c906108c SS |
15099 | |
15100 | /* Get name of field. */ | |
39cbfefa DJ |
15101 | fieldname = dwarf2_name (die, cu); |
15102 | if (fieldname == NULL) | |
15103 | fieldname = ""; | |
d8151005 DJ |
15104 | |
15105 | /* The name is already allocated along with this objfile, so we don't | |
15106 | need to duplicate it for the type. */ | |
15107 | fp->name = fieldname; | |
c906108c SS |
15108 | |
15109 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 15110 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15111 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15112 | { |
d48cc9dd | 15113 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c | 15114 | new_field->accessibility = DW_ACCESS_private; |
264fc0e2 | 15115 | fip->non_public_fields = true; |
c906108c SS |
15116 | } |
15117 | } | |
a9a9bd0f | 15118 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15119 | { |
a9a9bd0f DC |
15120 | /* C++ static member. */ |
15121 | ||
15122 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15123 | is a declaration, but all versions of G++ as of this writing | |
15124 | (so through at least 3.2.1) incorrectly generate | |
15125 | DW_TAG_variable tags. */ | |
6e70227d | 15126 | |
ff355380 | 15127 | const char *physname; |
c906108c | 15128 | |
a9a9bd0f | 15129 | /* Get name of field. */ |
39cbfefa DJ |
15130 | fieldname = dwarf2_name (die, cu); |
15131 | if (fieldname == NULL) | |
c906108c SS |
15132 | return; |
15133 | ||
254e6b9e | 15134 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15135 | if (attr |
15136 | /* Only create a symbol if this is an external value. | |
15137 | new_symbol checks this and puts the value in the global symbol | |
15138 | table, which we want. If it is not external, new_symbol | |
15139 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15140 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15141 | { |
15142 | /* A static const member, not much different than an enum as far as | |
15143 | we're concerned, except that we can support more types. */ | |
15144 | new_symbol (die, NULL, cu); | |
15145 | } | |
15146 | ||
2df3850c | 15147 | /* Get physical name. */ |
ff355380 | 15148 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15149 | |
d8151005 DJ |
15150 | /* The name is already allocated along with this objfile, so we don't |
15151 | need to duplicate it for the type. */ | |
15152 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
5d14b6e5 | 15153 | fp->set_type (die_type (die, cu)); |
d8151005 | 15154 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15155 | } |
15156 | else if (die->tag == DW_TAG_inheritance) | |
15157 | { | |
74ac6d43 | 15158 | /* C++ base class field. */ |
7d79de9a | 15159 | handle_data_member_location (die, cu, fp); |
c906108c | 15160 | FIELD_BITSIZE (*fp) = 0; |
5d14b6e5 SM |
15161 | fp->set_type (die_type (die, cu)); |
15162 | FIELD_NAME (*fp) = fp->type ()->name (); | |
c906108c | 15163 | } |
2ddeaf8a TT |
15164 | else |
15165 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15166 | } |
15167 | ||
883fd55a KS |
15168 | /* Can the type given by DIE define another type? */ |
15169 | ||
15170 | static bool | |
15171 | type_can_define_types (const struct die_info *die) | |
15172 | { | |
15173 | switch (die->tag) | |
15174 | { | |
15175 | case DW_TAG_typedef: | |
15176 | case DW_TAG_class_type: | |
15177 | case DW_TAG_structure_type: | |
15178 | case DW_TAG_union_type: | |
15179 | case DW_TAG_enumeration_type: | |
15180 | return true; | |
15181 | ||
15182 | default: | |
15183 | return false; | |
15184 | } | |
15185 | } | |
15186 | ||
15187 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15188 | |
15189 | static void | |
883fd55a KS |
15190 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15191 | struct dwarf2_cu *cu) | |
6e70227d | 15192 | { |
be2daae6 TT |
15193 | struct decl_field fp; |
15194 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15195 | |
883fd55a | 15196 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15197 | |
883fd55a | 15198 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15199 | fp.name = dwarf2_name (die, cu); |
15200 | fp.type = read_type_die (die, cu); | |
98751a41 | 15201 | |
c191a687 KS |
15202 | /* Save accessibility. */ |
15203 | enum dwarf_access_attribute accessibility; | |
15204 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
15205 | if (attr != NULL) | |
15206 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
15207 | else | |
15208 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15209 | switch (accessibility) | |
15210 | { | |
15211 | case DW_ACCESS_public: | |
15212 | /* The assumed value if neither private nor protected. */ | |
15213 | break; | |
15214 | case DW_ACCESS_private: | |
be2daae6 | 15215 | fp.is_private = 1; |
c191a687 KS |
15216 | break; |
15217 | case DW_ACCESS_protected: | |
be2daae6 | 15218 | fp.is_protected = 1; |
c191a687 KS |
15219 | break; |
15220 | default: | |
b98664d3 | 15221 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
15222 | } |
15223 | ||
883fd55a | 15224 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15225 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15226 | else |
be2daae6 | 15227 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15228 | } |
15229 | ||
9c6a1327 TT |
15230 | /* A convenience typedef that's used when finding the discriminant |
15231 | field for a variant part. */ | |
1b95cdb7 SM |
15232 | typedef std::unordered_map<sect_offset, int, gdb::hash_enum<sect_offset>> |
15233 | offset_map_type; | |
9c6a1327 TT |
15234 | |
15235 | /* Compute the discriminant range for a given variant. OBSTACK is | |
15236 | where the results will be stored. VARIANT is the variant to | |
15237 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
15238 | or unsigned. */ | |
15239 | ||
15240 | static const gdb::array_view<discriminant_range> | |
15241 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
15242 | bool is_unsigned) | |
15243 | { | |
15244 | std::vector<discriminant_range> ranges; | |
15245 | ||
15246 | if (variant.default_branch) | |
15247 | return {}; | |
15248 | ||
15249 | if (variant.discr_list_data == nullptr) | |
15250 | { | |
15251 | discriminant_range r | |
15252 | = {variant.discriminant_value, variant.discriminant_value}; | |
15253 | ranges.push_back (r); | |
15254 | } | |
15255 | else | |
15256 | { | |
15257 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
15258 | variant.discr_list_data->size); | |
15259 | while (!data.empty ()) | |
15260 | { | |
15261 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
15262 | { | |
15263 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
15264 | break; | |
15265 | } | |
15266 | bool is_range = data[0] == DW_DSC_range; | |
15267 | data = data.slice (1); | |
15268 | ||
15269 | ULONGEST low, high; | |
15270 | unsigned int bytes_read; | |
15271 | ||
15272 | if (data.empty ()) | |
15273 | { | |
15274 | complaint (_("DW_AT_discr_list missing low value")); | |
15275 | break; | |
15276 | } | |
15277 | if (is_unsigned) | |
15278 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
15279 | else | |
15280 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
15281 | &bytes_read); | |
15282 | data = data.slice (bytes_read); | |
15283 | ||
15284 | if (is_range) | |
15285 | { | |
15286 | if (data.empty ()) | |
15287 | { | |
15288 | complaint (_("DW_AT_discr_list missing high value")); | |
15289 | break; | |
15290 | } | |
15291 | if (is_unsigned) | |
15292 | high = read_unsigned_leb128 (nullptr, data.data (), | |
15293 | &bytes_read); | |
15294 | else | |
15295 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
15296 | &bytes_read); | |
15297 | data = data.slice (bytes_read); | |
15298 | } | |
15299 | else | |
15300 | high = low; | |
15301 | ||
15302 | ranges.push_back ({ low, high }); | |
15303 | } | |
15304 | } | |
15305 | ||
15306 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
15307 | ranges.size ()); | |
15308 | std::copy (ranges.begin (), ranges.end (), result); | |
15309 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
15310 | } | |
15311 | ||
15312 | static const gdb::array_view<variant_part> create_variant_parts | |
15313 | (struct obstack *obstack, | |
15314 | const offset_map_type &offset_map, | |
15315 | struct field_info *fi, | |
15316 | const std::vector<variant_part_builder> &variant_parts); | |
15317 | ||
15318 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
15319 | the variant to fill in. OBSTACK is where any needed allocations | |
15320 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
15321 | fields for the type. FI describes the fields of the type we're | |
15322 | processing. FIELD is the variant field we're converting. */ | |
15323 | ||
15324 | static void | |
15325 | create_one_variant (variant &result, struct obstack *obstack, | |
15326 | const offset_map_type &offset_map, | |
15327 | struct field_info *fi, const variant_field &field) | |
15328 | { | |
15329 | result.discriminants = convert_variant_range (obstack, field, false); | |
15330 | result.first_field = field.first_field + fi->baseclasses.size (); | |
15331 | result.last_field = field.last_field + fi->baseclasses.size (); | |
15332 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
15333 | field.variant_parts); | |
15334 | } | |
15335 | ||
15336 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
15337 | is the variant part to fill in. OBSTACK is where any needed | |
15338 | allocations will be done. OFFSET_MAP holds the mapping from | |
15339 | section offsets to fields for the type. FI describes the fields of | |
15340 | the type we're processing. BUILDER is the variant part to be | |
15341 | converted. */ | |
15342 | ||
15343 | static void | |
15344 | create_one_variant_part (variant_part &result, | |
15345 | struct obstack *obstack, | |
15346 | const offset_map_type &offset_map, | |
15347 | struct field_info *fi, | |
15348 | const variant_part_builder &builder) | |
15349 | { | |
15350 | auto iter = offset_map.find (builder.discriminant_offset); | |
15351 | if (iter == offset_map.end ()) | |
15352 | { | |
15353 | result.discriminant_index = -1; | |
15354 | /* Doesn't matter. */ | |
15355 | result.is_unsigned = false; | |
15356 | } | |
15357 | else | |
15358 | { | |
15359 | result.discriminant_index = iter->second; | |
15360 | result.is_unsigned | |
c6d940a9 | 15361 | = fi->fields[result.discriminant_index].field.type ()->is_unsigned (); |
9c6a1327 TT |
15362 | } |
15363 | ||
15364 | size_t n = builder.variants.size (); | |
15365 | variant *output = new (obstack) variant[n]; | |
15366 | for (size_t i = 0; i < n; ++i) | |
15367 | create_one_variant (output[i], obstack, offset_map, fi, | |
15368 | builder.variants[i]); | |
15369 | ||
15370 | result.variants = gdb::array_view<variant> (output, n); | |
15371 | } | |
15372 | ||
15373 | /* Create a vector of variant parts that can be attached to a type. | |
15374 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
15375 | holds the mapping from section offsets to fields for the type. FI | |
15376 | describes the fields of the type we're processing. VARIANT_PARTS | |
15377 | is the vector to convert. */ | |
15378 | ||
15379 | static const gdb::array_view<variant_part> | |
15380 | create_variant_parts (struct obstack *obstack, | |
15381 | const offset_map_type &offset_map, | |
15382 | struct field_info *fi, | |
15383 | const std::vector<variant_part_builder> &variant_parts) | |
15384 | { | |
15385 | if (variant_parts.empty ()) | |
15386 | return {}; | |
15387 | ||
15388 | size_t n = variant_parts.size (); | |
15389 | variant_part *result = new (obstack) variant_part[n]; | |
15390 | for (size_t i = 0; i < n; ++i) | |
15391 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
15392 | variant_parts[i]); | |
15393 | ||
15394 | return gdb::array_view<variant_part> (result, n); | |
15395 | } | |
15396 | ||
15397 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
15398 | done. */ | |
15399 | ||
15400 | static void | |
15401 | add_variant_property (struct field_info *fip, struct type *type, | |
15402 | struct dwarf2_cu *cu) | |
15403 | { | |
15404 | /* Map section offsets of fields to their field index. Note the | |
15405 | field index here does not take the number of baseclasses into | |
15406 | account. */ | |
15407 | offset_map_type offset_map; | |
15408 | for (int i = 0; i < fip->fields.size (); ++i) | |
15409 | offset_map[fip->fields[i].offset] = i; | |
15410 | ||
5e22e966 | 15411 | struct objfile *objfile = cu->per_objfile->objfile; |
9c6a1327 TT |
15412 | gdb::array_view<variant_part> parts |
15413 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
15414 | fip->variant_parts); | |
15415 | ||
15416 | struct dynamic_prop prop; | |
8c2e4e06 SM |
15417 | prop.set_variant_parts ((gdb::array_view<variant_part> *) |
15418 | obstack_copy (&objfile->objfile_obstack, &parts, | |
15419 | sizeof (parts))); | |
9c6a1327 | 15420 | |
5c54719c | 15421 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
9c6a1327 TT |
15422 | } |
15423 | ||
c906108c SS |
15424 | /* Create the vector of fields, and attach it to the type. */ |
15425 | ||
15426 | static void | |
fba45db2 | 15427 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15428 | struct dwarf2_cu *cu) |
c906108c | 15429 | { |
317f7127 | 15430 | int nfields = fip->nfields (); |
c906108c SS |
15431 | |
15432 | /* Record the field count, allocate space for the array of fields, | |
15433 | and create blank accessibility bitfields if necessary. */ | |
5e33d5f4 | 15434 | type->set_num_fields (nfields); |
3cabb6b0 SM |
15435 | type->set_fields |
15436 | ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * nfields)); | |
c906108c | 15437 | |
b4ba55a1 | 15438 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15439 | { |
15440 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15441 | ||
15442 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15443 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15444 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15445 | ||
15446 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15447 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15448 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15449 | ||
774b6a14 TT |
15450 | TYPE_FIELD_IGNORE_BITS (type) = |
15451 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15452 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15453 | } |
15454 | ||
15455 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15456 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15457 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15458 | { |
be2daae6 | 15459 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15460 | unsigned char *pointer; |
c906108c SS |
15461 | |
15462 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15463 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15464 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15465 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15466 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15467 | } |
15468 | ||
9c6a1327 TT |
15469 | if (!fip->variant_parts.empty ()) |
15470 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 15471 | |
be2daae6 TT |
15472 | /* Copy the saved-up fields into the field vector. */ |
15473 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15474 | { |
be2daae6 TT |
15475 | struct nextfield &field |
15476 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15477 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15478 | |
ceacbf6e | 15479 | type->field (i) = field.field; |
be2daae6 | 15480 | switch (field.accessibility) |
c906108c | 15481 | { |
c5aa993b | 15482 | case DW_ACCESS_private: |
b4ba55a1 | 15483 | if (cu->language != language_ada) |
be2daae6 | 15484 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15485 | break; |
c906108c | 15486 | |
c5aa993b | 15487 | case DW_ACCESS_protected: |
b4ba55a1 | 15488 | if (cu->language != language_ada) |
be2daae6 | 15489 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15490 | break; |
c906108c | 15491 | |
c5aa993b JM |
15492 | case DW_ACCESS_public: |
15493 | break; | |
c906108c | 15494 | |
c5aa993b JM |
15495 | default: |
15496 | /* Unknown accessibility. Complain and treat it as public. */ | |
15497 | { | |
b98664d3 | 15498 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15499 | field.accessibility); |
c5aa993b JM |
15500 | } |
15501 | break; | |
c906108c | 15502 | } |
be2daae6 | 15503 | if (i < fip->baseclasses.size ()) |
c906108c | 15504 | { |
be2daae6 | 15505 | switch (field.virtuality) |
c906108c | 15506 | { |
c5aa993b JM |
15507 | case DW_VIRTUALITY_virtual: |
15508 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15509 | if (cu->language == language_ada) |
a73c6dcd | 15510 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15511 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15512 | break; |
c906108c SS |
15513 | } |
15514 | } | |
c906108c SS |
15515 | } |
15516 | } | |
15517 | ||
7d27a96d TT |
15518 | /* Return true if this member function is a constructor, false |
15519 | otherwise. */ | |
15520 | ||
15521 | static int | |
15522 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15523 | { | |
15524 | const char *fieldname; | |
fe978cb0 | 15525 | const char *type_name; |
7d27a96d TT |
15526 | int len; |
15527 | ||
15528 | if (die->parent == NULL) | |
15529 | return 0; | |
15530 | ||
15531 | if (die->parent->tag != DW_TAG_structure_type | |
15532 | && die->parent->tag != DW_TAG_union_type | |
15533 | && die->parent->tag != DW_TAG_class_type) | |
15534 | return 0; | |
15535 | ||
15536 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15537 | type_name = dwarf2_name (die->parent, cu); |
15538 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15539 | return 0; |
15540 | ||
15541 | len = strlen (fieldname); | |
fe978cb0 PA |
15542 | return (strncmp (fieldname, type_name, len) == 0 |
15543 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15544 | } |
15545 | ||
e35000a7 TBA |
15546 | /* Check if the given VALUE is a recognized enum |
15547 | dwarf_defaulted_attribute constant according to DWARF5 spec, | |
15548 | Table 7.24. */ | |
15549 | ||
15550 | static bool | |
15551 | is_valid_DW_AT_defaulted (ULONGEST value) | |
15552 | { | |
15553 | switch (value) | |
15554 | { | |
15555 | case DW_DEFAULTED_no: | |
15556 | case DW_DEFAULTED_in_class: | |
15557 | case DW_DEFAULTED_out_of_class: | |
15558 | return true; | |
15559 | } | |
15560 | ||
3142e908 | 15561 | complaint (_("unrecognized DW_AT_defaulted value (%s)"), pulongest (value)); |
e35000a7 TBA |
15562 | return false; |
15563 | } | |
15564 | ||
c906108c SS |
15565 | /* Add a member function to the proper fieldlist. */ |
15566 | ||
15567 | static void | |
107d2387 | 15568 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15569 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15570 | { |
5e22e966 | 15571 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 15572 | struct attribute *attr; |
c906108c | 15573 | int i; |
be2daae6 | 15574 | struct fnfieldlist *flp = nullptr; |
c906108c | 15575 | struct fn_field *fnp; |
15d034d0 | 15576 | const char *fieldname; |
f792889a | 15577 | struct type *this_type; |
60d5a603 | 15578 | enum dwarf_access_attribute accessibility; |
c906108c | 15579 | |
b4ba55a1 | 15580 | if (cu->language == language_ada) |
a73c6dcd | 15581 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15582 | |
2df3850c | 15583 | /* Get name of member function. */ |
39cbfefa DJ |
15584 | fieldname = dwarf2_name (die, cu); |
15585 | if (fieldname == NULL) | |
2df3850c | 15586 | return; |
c906108c | 15587 | |
c906108c | 15588 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15589 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15590 | { |
27bfe10e | 15591 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15592 | { |
15593 | flp = &fip->fnfieldlists[i]; | |
15594 | break; | |
15595 | } | |
c906108c SS |
15596 | } |
15597 | ||
be2daae6 TT |
15598 | /* Create a new fnfieldlist if necessary. */ |
15599 | if (flp == nullptr) | |
c906108c | 15600 | { |
be2daae6 TT |
15601 | fip->fnfieldlists.emplace_back (); |
15602 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15603 | flp->name = fieldname; |
be2daae6 | 15604 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15605 | } |
15606 | ||
be2daae6 TT |
15607 | /* Create a new member function field and add it to the vector of |
15608 | fnfieldlists. */ | |
15609 | flp->fnfields.emplace_back (); | |
15610 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15611 | |
15612 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15613 | if (cu->language == language_cplus) |
be2daae6 TT |
15614 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15615 | die, cu); | |
3da10d80 KS |
15616 | else |
15617 | { | |
1d06ead6 | 15618 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15619 | fnp->physname = physname ? physname : ""; |
15620 | } | |
15621 | ||
c906108c | 15622 | fnp->type = alloc_type (objfile); |
f792889a | 15623 | this_type = read_type_die (die, cu); |
78134374 | 15624 | if (this_type && this_type->code () == TYPE_CODE_FUNC) |
c906108c | 15625 | { |
1f704f76 | 15626 | int nparams = this_type->num_fields (); |
c906108c | 15627 | |
f792889a | 15628 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15629 | of the method itself (TYPE_CODE_METHOD). */ |
15630 | smash_to_method_type (fnp->type, type, | |
f792889a | 15631 | TYPE_TARGET_TYPE (this_type), |
80fc5e77 | 15632 | this_type->fields (), |
1f704f76 | 15633 | this_type->num_fields (), |
a409645d | 15634 | this_type->has_varargs ()); |
c906108c SS |
15635 | |
15636 | /* Handle static member functions. | |
c5aa993b | 15637 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15638 | member functions. G++ helps GDB by marking the first |
15639 | parameter for non-static member functions (which is the this | |
15640 | pointer) as artificial. We obtain this information from | |
15641 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15642 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15643 | fnp->voffset = VOFFSET_STATIC; |
15644 | } | |
15645 | else | |
b98664d3 | 15646 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15647 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15648 | |
15649 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15650 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15651 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15652 | |
3e43a32a MS |
15653 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15654 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15655 | |
15656 | /* Get accessibility. */ | |
e142c38c | 15657 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 15658 | if (attr != nullptr) |
aead7601 | 15659 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15660 | else |
15661 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15662 | switch (accessibility) | |
c906108c | 15663 | { |
60d5a603 JK |
15664 | case DW_ACCESS_private: |
15665 | fnp->is_private = 1; | |
15666 | break; | |
15667 | case DW_ACCESS_protected: | |
15668 | fnp->is_protected = 1; | |
15669 | break; | |
c906108c SS |
15670 | } |
15671 | ||
b02dede2 | 15672 | /* Check for artificial methods. */ |
e142c38c | 15673 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15674 | if (attr && DW_UNSND (attr) != 0) |
15675 | fnp->is_artificial = 1; | |
15676 | ||
e35000a7 TBA |
15677 | /* Check for defaulted methods. */ |
15678 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
15679 | if (attr != nullptr && is_valid_DW_AT_defaulted (DW_UNSND (attr))) | |
15680 | fnp->defaulted = (enum dwarf_defaulted_attribute) DW_UNSND (attr); | |
15681 | ||
15682 | /* Check for deleted methods. */ | |
15683 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
15684 | if (attr != nullptr && DW_UNSND (attr) != 0) | |
15685 | fnp->is_deleted = 1; | |
15686 | ||
7d27a96d TT |
15687 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15688 | ||
0d564a31 | 15689 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15690 | function. For older versions of GCC, this is an offset in the |
15691 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15692 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15693 | to the object address. */ |
15694 | ||
e142c38c | 15695 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15696 | if (attr != nullptr) |
8e19ed76 | 15697 | { |
4fc6c0d5 | 15698 | if (attr->form_is_block () && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15699 | { |
aec5aa8b TT |
15700 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15701 | { | |
15702 | /* Old-style GCC. */ | |
15703 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15704 | } | |
15705 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15706 | || (DW_BLOCK (attr)->size > 1 | |
15707 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15708 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15709 | { | |
aec5aa8b TT |
15710 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15711 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15712 | dwarf2_complex_location_expr_complaint (); | |
15713 | else | |
15714 | fnp->voffset /= cu->header.addr_size; | |
15715 | fnp->voffset += 2; | |
15716 | } | |
15717 | else | |
15718 | dwarf2_complex_location_expr_complaint (); | |
15719 | ||
15720 | if (!fnp->fcontext) | |
7e993ebf KS |
15721 | { |
15722 | /* If there is no `this' field and no DW_AT_containing_type, | |
15723 | we cannot actually find a base class context for the | |
15724 | vtable! */ | |
1f704f76 | 15725 | if (this_type->num_fields () == 0 |
7e993ebf KS |
15726 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) |
15727 | { | |
b98664d3 | 15728 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15729 | "function \"%s\" (offset %s)"), |
15730 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15731 | } |
15732 | else | |
15733 | { | |
15734 | fnp->fcontext | |
940da03e | 15735 | = TYPE_TARGET_TYPE (this_type->field (0).type ()); |
7e993ebf KS |
15736 | } |
15737 | } | |
aec5aa8b | 15738 | } |
cd6c91b4 | 15739 | else if (attr->form_is_section_offset ()) |
8e19ed76 | 15740 | { |
4d3c2250 | 15741 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15742 | } |
15743 | else | |
15744 | { | |
4d3c2250 KB |
15745 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15746 | fieldname); | |
8e19ed76 | 15747 | } |
0d564a31 | 15748 | } |
d48cc9dd DJ |
15749 | else |
15750 | { | |
15751 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15752 | if (attr && DW_UNSND (attr)) | |
15753 | { | |
15754 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15755 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15756 | "but the vtable offset is not specified"), |
9d8780f0 | 15757 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15758 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15759 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15760 | } | |
15761 | } | |
c906108c SS |
15762 | } |
15763 | ||
15764 | /* Create the vector of member function fields, and attach it to the type. */ | |
15765 | ||
15766 | static void | |
fba45db2 | 15767 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15768 | struct dwarf2_cu *cu) |
c906108c | 15769 | { |
b4ba55a1 | 15770 | if (cu->language == language_ada) |
a73c6dcd | 15771 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15772 | |
c906108c SS |
15773 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15774 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15775 | TYPE_ALLOC (type, |
15776 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15777 | |
be2daae6 | 15778 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15779 | { |
be2daae6 | 15780 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15781 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15782 | |
be2daae6 TT |
15783 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15784 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15785 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15786 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15787 | ||
15788 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15789 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15790 | } |
15791 | ||
be2daae6 | 15792 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15793 | } |
15794 | ||
1168df01 JB |
15795 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15796 | language, zero otherwise. */ | |
15797 | static int | |
15798 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15799 | { | |
15800 | static const char vptr[] = "_vptr"; | |
15801 | ||
9c37b5ae TT |
15802 | /* Look for the C++ form of the vtable. */ |
15803 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15804 | return 1; |
15805 | ||
15806 | return 0; | |
15807 | } | |
15808 | ||
c0dd20ea | 15809 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15810 | functions, with the ABI-specified layout. If TYPE describes |
15811 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15812 | |
15813 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15814 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15815 | |
0b92b5bb TT |
15816 | static void |
15817 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15818 | { |
09e2d7c7 | 15819 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15820 | |
15821 | /* Check for a structure with no name and two children. */ | |
1f704f76 | 15822 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) |
0b92b5bb | 15823 | return; |
c0dd20ea DJ |
15824 | |
15825 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15826 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15827 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15828 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15829 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15830 | return; | |
c0dd20ea DJ |
15831 | |
15832 | /* Find the type of the method. */ | |
940da03e | 15833 | pfn_type = type->field (0).type (); |
c0dd20ea | 15834 | if (pfn_type == NULL |
78134374 SM |
15835 | || pfn_type->code () != TYPE_CODE_PTR |
15836 | || TYPE_TARGET_TYPE (pfn_type)->code () != TYPE_CODE_FUNC) | |
0b92b5bb | 15837 | return; |
c0dd20ea DJ |
15838 | |
15839 | /* Look for the "this" argument. */ | |
15840 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
1f704f76 | 15841 | if (pfn_type->num_fields () == 0 |
940da03e SM |
15842 | /* || pfn_type->field (0).type () == NULL */ |
15843 | || pfn_type->field (0).type ()->code () != TYPE_CODE_PTR) | |
0b92b5bb | 15844 | return; |
c0dd20ea | 15845 | |
940da03e | 15846 | self_type = TYPE_TARGET_TYPE (pfn_type->field (0).type ()); |
0b92b5bb | 15847 | new_type = alloc_type (objfile); |
09e2d7c7 | 15848 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
80fc5e77 | 15849 | pfn_type->fields (), pfn_type->num_fields (), |
a409645d | 15850 | pfn_type->has_varargs ()); |
0b92b5bb | 15851 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15852 | } |
1168df01 | 15853 | |
2b4424c3 TT |
15854 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15855 | appropriate error checking and issuing complaints if there is a | |
15856 | problem. */ | |
15857 | ||
15858 | static ULONGEST | |
15859 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15860 | { | |
15861 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15862 | ||
15863 | if (attr == nullptr) | |
15864 | return 0; | |
15865 | ||
cd6c91b4 | 15866 | if (!attr->form_is_constant ()) |
2b4424c3 | 15867 | { |
b98664d3 | 15868 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15869 | " - DIE at %s [in module %s]"), |
15870 | sect_offset_str (die->sect_off), | |
5e22e966 | 15871 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15872 | return 0; |
15873 | } | |
15874 | ||
15875 | ULONGEST align; | |
15876 | if (attr->form == DW_FORM_sdata) | |
15877 | { | |
15878 | LONGEST val = DW_SND (attr); | |
15879 | if (val < 0) | |
15880 | { | |
b98664d3 | 15881 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15882 | " - DIE at %s [in module %s]"), |
15883 | sect_offset_str (die->sect_off), | |
5e22e966 | 15884 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15885 | return 0; |
15886 | } | |
15887 | align = val; | |
15888 | } | |
15889 | else | |
15890 | align = DW_UNSND (attr); | |
15891 | ||
15892 | if (align == 0) | |
15893 | { | |
b98664d3 | 15894 | complaint (_("DW_AT_alignment value must not be zero" |
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 | if ((align & (align - 1)) != 0) | |
15901 | { | |
b98664d3 | 15902 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15903 | " - DIE at %s [in module %s]"), |
15904 | sect_offset_str (die->sect_off), | |
5e22e966 | 15905 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15906 | return 0; |
15907 | } | |
15908 | ||
15909 | return align; | |
15910 | } | |
15911 | ||
15912 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15913 | the alignment for TYPE. */ | |
15914 | ||
15915 | static void | |
15916 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15917 | struct type *type) | |
15918 | { | |
15919 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15920 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15921 | " - DIE at %s [in module %s]"), |
15922 | sect_offset_str (die->sect_off), | |
5e22e966 | 15923 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 15924 | } |
685b1105 | 15925 | |
e35000a7 TBA |
15926 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15927 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15928 | ||
15929 | static bool | |
15930 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15931 | { | |
15932 | switch (value) | |
15933 | { | |
15934 | case DW_CC_normal: | |
15935 | case DW_CC_pass_by_reference: | |
15936 | case DW_CC_pass_by_value: | |
15937 | return true; | |
15938 | ||
15939 | default: | |
15940 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15941 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
15942 | return false; |
15943 | } | |
15944 | } | |
15945 | ||
d0922fcf TBA |
15946 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15947 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
15948 | also according to GNU-specific values (see include/dwarf2.h). */ | |
15949 | ||
15950 | static bool | |
15951 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
15952 | { | |
15953 | switch (value) | |
15954 | { | |
15955 | case DW_CC_normal: | |
15956 | case DW_CC_program: | |
15957 | case DW_CC_nocall: | |
15958 | return true; | |
15959 | ||
15960 | case DW_CC_GNU_renesas_sh: | |
15961 | case DW_CC_GNU_borland_fastcall_i386: | |
15962 | case DW_CC_GDB_IBM_OpenCL: | |
15963 | return true; | |
15964 | ||
15965 | default: | |
15966 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15967 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
15968 | return false; |
15969 | } | |
15970 | } | |
15971 | ||
c906108c | 15972 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15973 | (definition) to create a type for the structure or union. Fill in |
15974 | the type's name and general properties; the members will not be | |
83655187 DE |
15975 | processed until process_structure_scope. A symbol table entry for |
15976 | the type will also not be done until process_structure_scope (assuming | |
15977 | the type has a name). | |
c906108c | 15978 | |
c767944b DJ |
15979 | NOTE: we need to call these functions regardless of whether or not the |
15980 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15981 | structure or union. This gets the type entered into our set of |
83655187 | 15982 | user defined types. */ |
c906108c | 15983 | |
f792889a | 15984 | static struct type * |
134d01f1 | 15985 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15986 | { |
5e22e966 | 15987 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
15988 | struct type *type; |
15989 | struct attribute *attr; | |
15d034d0 | 15990 | const char *name; |
c906108c | 15991 | |
348e048f DE |
15992 | /* If the definition of this type lives in .debug_types, read that type. |
15993 | Don't follow DW_AT_specification though, that will take us back up | |
15994 | the chain and we want to go down. */ | |
052c8bb8 | 15995 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15996 | if (attr != nullptr) |
348e048f | 15997 | { |
ac9ec31b | 15998 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15999 | |
ac9ec31b | 16000 | /* The type's CU may not be the same as CU. |
02142a6c | 16001 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16002 | return set_die_type (die, type, cu); |
16003 | } | |
16004 | ||
c0dd20ea | 16005 | type = alloc_type (objfile); |
c906108c | 16006 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 16007 | |
39cbfefa DJ |
16008 | name = dwarf2_name (die, cu); |
16009 | if (name != NULL) | |
c906108c | 16010 | { |
987504bb | 16011 | if (cu->language == language_cplus |
c44af4eb TT |
16012 | || cu->language == language_d |
16013 | || cu->language == language_rust) | |
63d06c5c | 16014 | { |
15d034d0 | 16015 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
16016 | |
16017 | /* dwarf2_full_name might have already finished building the DIE's | |
16018 | type. If so, there is no need to continue. */ | |
16019 | if (get_die_type (die, cu) != NULL) | |
16020 | return get_die_type (die, cu); | |
16021 | ||
d0e39ea2 | 16022 | type->set_name (full_name); |
63d06c5c DC |
16023 | } |
16024 | else | |
16025 | { | |
d8151005 DJ |
16026 | /* The name is already allocated along with this objfile, so |
16027 | we don't need to duplicate it for the type. */ | |
d0e39ea2 | 16028 | type->set_name (name); |
63d06c5c | 16029 | } |
c906108c SS |
16030 | } |
16031 | ||
16032 | if (die->tag == DW_TAG_structure_type) | |
16033 | { | |
67607e24 | 16034 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
16035 | } |
16036 | else if (die->tag == DW_TAG_union_type) | |
16037 | { | |
67607e24 | 16038 | type->set_code (TYPE_CODE_UNION); |
c906108c SS |
16039 | } |
16040 | else | |
16041 | { | |
67607e24 | 16042 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
16043 | } |
16044 | ||
0cc2414c TT |
16045 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
16046 | TYPE_DECLARED_CLASS (type) = 1; | |
16047 | ||
e35000a7 TBA |
16048 | /* Store the calling convention in the type if it's available in |
16049 | the die. Otherwise the calling convention remains set to | |
16050 | the default value DW_CC_normal. */ | |
16051 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
16052 | if (attr != nullptr | |
16053 | && is_valid_DW_AT_calling_convention_for_type (DW_UNSND (attr))) | |
16054 | { | |
16055 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16056 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
16057 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
16058 | } | |
16059 | ||
e142c38c | 16060 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16061 | if (attr != nullptr) |
c906108c | 16062 | { |
cd6c91b4 | 16063 | if (attr->form_is_constant ()) |
155bfbd3 JB |
16064 | TYPE_LENGTH (type) = DW_UNSND (attr); |
16065 | else | |
16066 | { | |
f8e89861 | 16067 | struct dynamic_prop prop; |
293e7e51 | 16068 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 16069 | type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); |
155bfbd3 JB |
16070 | TYPE_LENGTH (type) = 0; |
16071 | } | |
c906108c SS |
16072 | } |
16073 | else | |
16074 | { | |
16075 | TYPE_LENGTH (type) = 0; | |
16076 | } | |
16077 | ||
2b4424c3 TT |
16078 | maybe_set_alignment (cu, die, type); |
16079 | ||
5230b05a | 16080 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 16081 | { |
5230b05a WT |
16082 | /* ICC<14 does not output the required DW_AT_declaration on |
16083 | incomplete types, but gives them a size of zero. */ | |
b4b73759 | 16084 | type->set_is_stub (true); |
685b1105 JK |
16085 | } |
16086 | else | |
9baccff6 | 16087 | type->set_stub_is_supported (true); |
685b1105 | 16088 | |
dc718098 | 16089 | if (die_is_declaration (die, cu)) |
b4b73759 | 16090 | type->set_is_stub (true); |
a6c727b2 DJ |
16091 | else if (attr == NULL && die->child == NULL |
16092 | && producer_is_realview (cu->producer)) | |
16093 | /* RealView does not output the required DW_AT_declaration | |
16094 | on incomplete types. */ | |
b4b73759 | 16095 | type->set_is_stub (true); |
dc718098 | 16096 | |
c906108c SS |
16097 | /* We need to add the type field to the die immediately so we don't |
16098 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 16099 | type within the structure itself. */ |
1c379e20 | 16100 | set_die_type (die, type, cu); |
c906108c | 16101 | |
7e314c57 JK |
16102 | /* set_die_type should be already done. */ |
16103 | set_descriptive_type (type, die, cu); | |
16104 | ||
c767944b DJ |
16105 | return type; |
16106 | } | |
16107 | ||
9c6a1327 TT |
16108 | static void handle_struct_member_die |
16109 | (struct die_info *child_die, | |
16110 | struct type *type, | |
16111 | struct field_info *fi, | |
16112 | std::vector<struct symbol *> *template_args, | |
16113 | struct dwarf2_cu *cu); | |
16114 | ||
16115 | /* A helper for handle_struct_member_die that handles | |
16116 | DW_TAG_variant_part. */ | |
16117 | ||
16118 | static void | |
16119 | handle_variant_part (struct die_info *die, struct type *type, | |
16120 | struct field_info *fi, | |
16121 | std::vector<struct symbol *> *template_args, | |
16122 | struct dwarf2_cu *cu) | |
16123 | { | |
16124 | variant_part_builder *new_part; | |
16125 | if (fi->current_variant_part == nullptr) | |
16126 | { | |
16127 | fi->variant_parts.emplace_back (); | |
16128 | new_part = &fi->variant_parts.back (); | |
16129 | } | |
16130 | else if (!fi->current_variant_part->processing_variant) | |
16131 | { | |
16132 | complaint (_("nested DW_TAG_variant_part seen " | |
16133 | "- DIE at %s [in module %s]"), | |
16134 | sect_offset_str (die->sect_off), | |
5e22e966 | 16135 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16136 | return; |
16137 | } | |
16138 | else | |
16139 | { | |
16140 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
16141 | current.variant_parts.emplace_back (); | |
16142 | new_part = ¤t.variant_parts.back (); | |
16143 | } | |
16144 | ||
16145 | /* When we recurse, we want callees to add to this new variant | |
16146 | part. */ | |
16147 | scoped_restore save_current_variant_part | |
16148 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
16149 | ||
16150 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
16151 | if (discr == NULL) | |
16152 | { | |
16153 | /* It's a univariant form, an extension we support. */ | |
16154 | } | |
16155 | else if (discr->form_is_ref ()) | |
16156 | { | |
16157 | struct dwarf2_cu *target_cu = cu; | |
16158 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16159 | ||
16160 | new_part->discriminant_offset = target_die->sect_off; | |
16161 | } | |
16162 | else | |
16163 | { | |
16164 | complaint (_("DW_AT_discr does not have DIE reference form" | |
16165 | " - DIE at %s [in module %s]"), | |
16166 | sect_offset_str (die->sect_off), | |
5e22e966 | 16167 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16168 | } |
16169 | ||
16170 | for (die_info *child_die = die->child; | |
16171 | child_die != NULL; | |
16172 | child_die = child_die->sibling) | |
16173 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
16174 | } | |
16175 | ||
16176 | /* A helper for handle_struct_member_die that handles | |
16177 | DW_TAG_variant. */ | |
16178 | ||
16179 | static void | |
16180 | handle_variant (struct die_info *die, struct type *type, | |
16181 | struct field_info *fi, | |
16182 | std::vector<struct symbol *> *template_args, | |
16183 | struct dwarf2_cu *cu) | |
16184 | { | |
16185 | if (fi->current_variant_part == nullptr) | |
16186 | { | |
16187 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
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 | if (fi->current_variant_part->processing_variant) | |
16194 | { | |
16195 | complaint (_("nested DW_TAG_variant seen " | |
16196 | "- DIE at %s [in module %s]"), | |
16197 | sect_offset_str (die->sect_off), | |
5e22e966 | 16198 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16199 | return; |
16200 | } | |
16201 | ||
16202 | scoped_restore save_processing_variant | |
16203 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
16204 | true); | |
16205 | ||
16206 | fi->current_variant_part->variants.emplace_back (); | |
16207 | variant_field &variant = fi->current_variant_part->variants.back (); | |
16208 | variant.first_field = fi->fields.size (); | |
16209 | ||
16210 | /* In a variant we want to get the discriminant and also add a | |
16211 | field for our sole member child. */ | |
16212 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
16213 | if (discr == nullptr) | |
16214 | { | |
16215 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
16216 | if (discr == nullptr || DW_BLOCK (discr)->size == 0) | |
16217 | variant.default_branch = true; | |
16218 | else | |
16219 | variant.discr_list_data = DW_BLOCK (discr); | |
16220 | } | |
16221 | else | |
16222 | variant.discriminant_value = DW_UNSND (discr); | |
16223 | ||
16224 | for (die_info *variant_child = die->child; | |
16225 | variant_child != NULL; | |
16226 | variant_child = variant_child->sibling) | |
16227 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
16228 | ||
16229 | variant.last_field = fi->fields.size (); | |
16230 | } | |
16231 | ||
2ddeaf8a TT |
16232 | /* A helper for process_structure_scope that handles a single member |
16233 | DIE. */ | |
16234 | ||
16235 | static void | |
16236 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
16237 | struct field_info *fi, | |
16238 | std::vector<struct symbol *> *template_args, | |
16239 | struct dwarf2_cu *cu) | |
16240 | { | |
16241 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 16242 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
16243 | { |
16244 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
16245 | should be a DW_TAG_member that is a declaration, but | |
16246 | all versions of G++ as of this writing (so through at | |
16247 | least 3.2.1) incorrectly generate DW_TAG_variable | |
16248 | tags for them instead. */ | |
16249 | dwarf2_add_field (fi, child_die, cu); | |
16250 | } | |
16251 | else if (child_die->tag == DW_TAG_subprogram) | |
16252 | { | |
16253 | /* Rust doesn't have member functions in the C++ sense. | |
16254 | However, it does emit ordinary functions as children | |
16255 | of a struct DIE. */ | |
16256 | if (cu->language == language_rust) | |
16257 | read_func_scope (child_die, cu); | |
16258 | else | |
16259 | { | |
16260 | /* C++ member function. */ | |
16261 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
16262 | } | |
16263 | } | |
16264 | else if (child_die->tag == DW_TAG_inheritance) | |
16265 | { | |
16266 | /* C++ base class field. */ | |
16267 | dwarf2_add_field (fi, child_die, cu); | |
16268 | } | |
16269 | else if (type_can_define_types (child_die)) | |
16270 | dwarf2_add_type_defn (fi, child_die, cu); | |
16271 | else if (child_die->tag == DW_TAG_template_type_param | |
16272 | || child_die->tag == DW_TAG_template_value_param) | |
16273 | { | |
16274 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
16275 | ||
16276 | if (arg != NULL) | |
16277 | template_args->push_back (arg); | |
16278 | } | |
9c6a1327 TT |
16279 | else if (child_die->tag == DW_TAG_variant_part) |
16280 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 16281 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 16282 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
16283 | } |
16284 | ||
c767944b DJ |
16285 | /* Finish creating a structure or union type, including filling in |
16286 | its members and creating a symbol for it. */ | |
16287 | ||
16288 | static void | |
16289 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16290 | { | |
5e22e966 | 16291 | struct objfile *objfile = cu->per_objfile->objfile; |
ca040673 | 16292 | struct die_info *child_die; |
c767944b DJ |
16293 | struct type *type; |
16294 | ||
16295 | type = get_die_type (die, cu); | |
16296 | if (type == NULL) | |
16297 | type = read_structure_type (die, cu); | |
16298 | ||
3e1d3d8c | 16299 | bool has_template_parameters = false; |
e142c38c | 16300 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16301 | { |
16302 | struct field_info fi; | |
2f4732b0 | 16303 | std::vector<struct symbol *> template_args; |
c906108c | 16304 | |
639d11d3 | 16305 | child_die = die->child; |
c906108c SS |
16306 | |
16307 | while (child_die && child_die->tag) | |
16308 | { | |
2ddeaf8a | 16309 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 16310 | child_die = child_die->sibling; |
c906108c SS |
16311 | } |
16312 | ||
34eaf542 | 16313 | /* Attach template arguments to type. */ |
2f4732b0 | 16314 | if (!template_args.empty ()) |
34eaf542 | 16315 | { |
3e1d3d8c | 16316 | has_template_parameters = true; |
34eaf542 | 16317 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16318 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16319 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16320 | = XOBNEWVEC (&objfile->objfile_obstack, |
16321 | struct symbol *, | |
16322 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16323 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16324 | template_args.data (), |
34eaf542 TT |
16325 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16326 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16327 | } |
16328 | ||
c906108c | 16329 | /* Attach fields and member functions to the type. */ |
317f7127 | 16330 | if (fi.nfields () > 0) |
e7c27a73 | 16331 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16332 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16333 | { |
e7c27a73 | 16334 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16335 | |
c5aa993b | 16336 | /* Get the type which refers to the base class (possibly this |
c906108c | 16337 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16338 | class from the DW_AT_containing_type attribute. This use of |
16339 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16340 | |
e142c38c | 16341 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16342 | { |
e7c27a73 | 16343 | struct type *t = die_containing_type (die, cu); |
c906108c | 16344 | |
ae6ae975 | 16345 | set_type_vptr_basetype (type, t); |
c906108c SS |
16346 | if (type == t) |
16347 | { | |
c906108c SS |
16348 | int i; |
16349 | ||
16350 | /* Our own class provides vtbl ptr. */ | |
1f704f76 | 16351 | for (i = t->num_fields () - 1; |
c906108c SS |
16352 | i >= TYPE_N_BASECLASSES (t); |
16353 | --i) | |
16354 | { | |
0d5cff50 | 16355 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16356 | |
1168df01 | 16357 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16358 | { |
ae6ae975 | 16359 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16360 | break; |
16361 | } | |
16362 | } | |
16363 | ||
16364 | /* Complain if virtual function table field not found. */ | |
16365 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16366 | complaint (_("virtual function table pointer " |
3e43a32a | 16367 | "not found when defining class '%s'"), |
7d93a1e0 | 16368 | type->name () ? type->name () : ""); |
c906108c SS |
16369 | } |
16370 | else | |
16371 | { | |
ae6ae975 | 16372 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16373 | } |
16374 | } | |
f6235d4c | 16375 | else if (cu->producer |
61012eef | 16376 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16377 | { |
16378 | /* The IBM XLC compiler does not provide direct indication | |
16379 | of the containing type, but the vtable pointer is | |
16380 | always named __vfp. */ | |
16381 | ||
16382 | int i; | |
16383 | ||
1f704f76 | 16384 | for (i = type->num_fields () - 1; |
f6235d4c EZ |
16385 | i >= TYPE_N_BASECLASSES (type); |
16386 | --i) | |
16387 | { | |
16388 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16389 | { | |
ae6ae975 DE |
16390 | set_type_vptr_fieldno (type, i); |
16391 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16392 | break; |
16393 | } | |
16394 | } | |
16395 | } | |
c906108c | 16396 | } |
98751a41 JK |
16397 | |
16398 | /* Copy fi.typedef_field_list linked list elements content into the | |
16399 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16400 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16401 | { |
be2daae6 | 16402 | int count = fi.typedef_field_list.size (); |
98751a41 | 16403 | |
a0d7a4ff | 16404 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16405 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16406 | = ((struct decl_field *) |
be2daae6 TT |
16407 | TYPE_ALLOC (type, |
16408 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16409 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16410 | |
be2daae6 TT |
16411 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16412 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16413 | } |
c767944b | 16414 | |
883fd55a KS |
16415 | /* Copy fi.nested_types_list linked list elements content into the |
16416 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16417 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16418 | { |
be2daae6 | 16419 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16420 | |
16421 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16422 | TYPE_NESTED_TYPES_ARRAY (type) | |
16423 | = ((struct decl_field *) | |
be2daae6 TT |
16424 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16425 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16426 | |
be2daae6 TT |
16427 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16428 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16429 | } |
c906108c | 16430 | } |
63d06c5c | 16431 | |
bb5ed363 | 16432 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16433 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16434 | cu->rust_unions.push_back (type); | |
0b92b5bb | 16435 | |
90aeadfc DC |
16436 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16437 | snapshots) has been known to create a die giving a declaration | |
16438 | for a class that has, as a child, a die giving a definition for a | |
16439 | nested class. So we have to process our children even if the | |
16440 | current die is a declaration. Normally, of course, a declaration | |
16441 | won't have any children at all. */ | |
134d01f1 | 16442 | |
ca040673 DE |
16443 | child_die = die->child; |
16444 | ||
90aeadfc DC |
16445 | while (child_die != NULL && child_die->tag) |
16446 | { | |
16447 | if (child_die->tag == DW_TAG_member | |
16448 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16449 | || child_die->tag == DW_TAG_inheritance |
16450 | || child_die->tag == DW_TAG_template_value_param | |
16451 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16452 | { |
90aeadfc | 16453 | /* Do nothing. */ |
134d01f1 | 16454 | } |
90aeadfc DC |
16455 | else |
16456 | process_die (child_die, cu); | |
134d01f1 | 16457 | |
436c571c | 16458 | child_die = child_die->sibling; |
134d01f1 DJ |
16459 | } |
16460 | ||
fa4028e9 JB |
16461 | /* Do not consider external references. According to the DWARF standard, |
16462 | these DIEs are identified by the fact that they have no byte_size | |
16463 | attribute, and a declaration attribute. */ | |
16464 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15cd93d0 TV |
16465 | || !die_is_declaration (die, cu) |
16466 | || dwarf2_attr (die, DW_AT_signature, cu) != NULL) | |
3e1d3d8c TT |
16467 | { |
16468 | struct symbol *sym = new_symbol (die, type, cu); | |
16469 | ||
16470 | if (has_template_parameters) | |
16471 | { | |
a776957c TT |
16472 | struct symtab *symtab; |
16473 | if (sym != nullptr) | |
16474 | symtab = symbol_symtab (sym); | |
16475 | else if (cu->line_header != nullptr) | |
16476 | { | |
16477 | /* Any related symtab will do. */ | |
16478 | symtab | |
7ba99d21 | 16479 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
16480 | } |
16481 | else | |
16482 | { | |
16483 | symtab = nullptr; | |
16484 | complaint (_("could not find suitable " | |
16485 | "symtab for template parameter" | |
16486 | " - DIE at %s [in module %s]"), | |
16487 | sect_offset_str (die->sect_off), | |
16488 | objfile_name (objfile)); | |
16489 | } | |
16490 | ||
16491 | if (symtab != nullptr) | |
16492 | { | |
16493 | /* Make sure that the symtab is set on the new symbols. | |
16494 | Even though they don't appear in this symtab directly, | |
16495 | other parts of gdb assume that symbols do, and this is | |
16496 | reasonably true. */ | |
16497 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16498 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16499 | } | |
3e1d3d8c TT |
16500 | } |
16501 | } | |
134d01f1 DJ |
16502 | } |
16503 | ||
ed6acedd TT |
16504 | /* Assuming DIE is an enumeration type, and TYPE is its associated |
16505 | type, update TYPE using some information only available in DIE's | |
16506 | children. In particular, the fields are computed. */ | |
55426c9d JB |
16507 | |
16508 | static void | |
16509 | update_enumeration_type_from_children (struct die_info *die, | |
16510 | struct type *type, | |
16511 | struct dwarf2_cu *cu) | |
16512 | { | |
60f7655a | 16513 | struct die_info *child_die; |
55426c9d JB |
16514 | int unsigned_enum = 1; |
16515 | int flag_enum = 1; | |
55426c9d | 16516 | |
8268c778 | 16517 | auto_obstack obstack; |
ed6acedd | 16518 | std::vector<struct field> fields; |
55426c9d | 16519 | |
60f7655a DE |
16520 | for (child_die = die->child; |
16521 | child_die != NULL && child_die->tag; | |
436c571c | 16522 | child_die = child_die->sibling) |
55426c9d JB |
16523 | { |
16524 | struct attribute *attr; | |
16525 | LONGEST value; | |
16526 | const gdb_byte *bytes; | |
16527 | struct dwarf2_locexpr_baton *baton; | |
16528 | const char *name; | |
60f7655a | 16529 | |
55426c9d JB |
16530 | if (child_die->tag != DW_TAG_enumerator) |
16531 | continue; | |
16532 | ||
16533 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16534 | if (attr == NULL) | |
16535 | continue; | |
16536 | ||
16537 | name = dwarf2_name (child_die, cu); | |
16538 | if (name == NULL) | |
16539 | name = "<anonymous enumerator>"; | |
16540 | ||
16541 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16542 | &value, &bytes, &baton); | |
16543 | if (value < 0) | |
16544 | { | |
16545 | unsigned_enum = 0; | |
16546 | flag_enum = 0; | |
16547 | } | |
55426c9d | 16548 | else |
edd45eb0 SM |
16549 | { |
16550 | if (count_one_bits_ll (value) >= 2) | |
16551 | flag_enum = 0; | |
edd45eb0 | 16552 | } |
55426c9d | 16553 | |
ed6acedd TT |
16554 | fields.emplace_back (); |
16555 | struct field &field = fields.back (); | |
16556 | FIELD_NAME (field) = dwarf2_physname (name, child_die, cu); | |
16557 | SET_FIELD_ENUMVAL (field, value); | |
16558 | } | |
16559 | ||
16560 | if (!fields.empty ()) | |
16561 | { | |
5e33d5f4 | 16562 | type->set_num_fields (fields.size ()); |
3cabb6b0 SM |
16563 | type->set_fields |
16564 | ((struct field *) | |
16565 | TYPE_ALLOC (type, sizeof (struct field) * fields.size ())); | |
80fc5e77 | 16566 | memcpy (type->fields (), fields.data (), |
ed6acedd | 16567 | sizeof (struct field) * fields.size ()); |
55426c9d JB |
16568 | } |
16569 | ||
16570 | if (unsigned_enum) | |
653223d3 SM |
16571 | type->set_is_unsigned (true); |
16572 | ||
55426c9d JB |
16573 | if (flag_enum) |
16574 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16575 | } |
16576 | ||
134d01f1 DJ |
16577 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16578 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16579 | |
f792889a | 16580 | static struct type * |
134d01f1 | 16581 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16582 | { |
5e22e966 | 16583 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16584 | struct type *type; |
c906108c | 16585 | struct attribute *attr; |
0114d602 | 16586 | const char *name; |
134d01f1 | 16587 | |
348e048f DE |
16588 | /* If the definition of this type lives in .debug_types, read that type. |
16589 | Don't follow DW_AT_specification though, that will take us back up | |
16590 | the chain and we want to go down. */ | |
052c8bb8 | 16591 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16592 | if (attr != nullptr) |
348e048f | 16593 | { |
ac9ec31b | 16594 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16595 | |
ac9ec31b | 16596 | /* The type's CU may not be the same as CU. |
02142a6c | 16597 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16598 | return set_die_type (die, type, cu); |
16599 | } | |
16600 | ||
c906108c SS |
16601 | type = alloc_type (objfile); |
16602 | ||
67607e24 | 16603 | type->set_code (TYPE_CODE_ENUM); |
94af9270 | 16604 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16605 | if (name != NULL) |
d0e39ea2 | 16606 | type->set_name (name); |
c906108c | 16607 | |
0626fc76 TT |
16608 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16609 | if (attr != NULL) | |
16610 | { | |
16611 | struct type *underlying_type = die_type (die, cu); | |
16612 | ||
16613 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16614 | } | |
16615 | ||
e142c38c | 16616 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16617 | if (attr != nullptr) |
c906108c SS |
16618 | { |
16619 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16620 | } | |
16621 | else | |
16622 | { | |
16623 | TYPE_LENGTH (type) = 0; | |
16624 | } | |
16625 | ||
2b4424c3 TT |
16626 | maybe_set_alignment (cu, die, type); |
16627 | ||
137033e9 JB |
16628 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16629 | declared as private in the package spec, and then defined only | |
16630 | inside the package body. Such types are known as Taft Amendment | |
16631 | Types. When another package uses such a type, an incomplete DIE | |
16632 | may be generated by the compiler. */ | |
02eb380e | 16633 | if (die_is_declaration (die, cu)) |
b4b73759 | 16634 | type->set_is_stub (true); |
02eb380e | 16635 | |
0626fc76 TT |
16636 | /* If this type has an underlying type that is not a stub, then we |
16637 | may use its attributes. We always use the "unsigned" attribute | |
16638 | in this situation, because ordinarily we guess whether the type | |
16639 | is unsigned -- but the guess can be wrong and the underlying type | |
16640 | can tell us the reality. However, we defer to a local size | |
16641 | attribute if one exists, because this lets the compiler override | |
16642 | the underlying type if needed. */ | |
e46d3488 | 16643 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_TARGET_TYPE (type)->is_stub ()) |
0626fc76 | 16644 | { |
9e7c9a03 HD |
16645 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
16646 | underlying_type = check_typedef (underlying_type); | |
653223d3 SM |
16647 | |
16648 | type->set_is_unsigned (underlying_type->is_unsigned ()); | |
16649 | ||
0626fc76 | 16650 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 16651 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
653223d3 | 16652 | |
2b4424c3 | 16653 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
16654 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
16655 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
16656 | } |
16657 | ||
3d567982 TT |
16658 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16659 | ||
ed6acedd TT |
16660 | set_die_type (die, type, cu); |
16661 | ||
16662 | /* Finish the creation of this type by using the enum's children. | |
16663 | Note that, as usual, this must come after set_die_type to avoid | |
16664 | infinite recursion when trying to compute the names of the | |
16665 | enumerators. */ | |
16666 | update_enumeration_type_from_children (die, type, cu); | |
16667 | ||
16668 | return type; | |
134d01f1 DJ |
16669 | } |
16670 | ||
16671 | /* Given a pointer to a die which begins an enumeration, process all | |
16672 | the dies that define the members of the enumeration, and create the | |
16673 | symbol for the enumeration type. | |
16674 | ||
16675 | NOTE: We reverse the order of the element list. */ | |
16676 | ||
16677 | static void | |
16678 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16679 | { | |
f792889a | 16680 | struct type *this_type; |
134d01f1 | 16681 | |
f792889a DJ |
16682 | this_type = get_die_type (die, cu); |
16683 | if (this_type == NULL) | |
16684 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16685 | |
639d11d3 | 16686 | if (die->child != NULL) |
c906108c | 16687 | { |
9dc481d3 | 16688 | struct die_info *child_die; |
15d034d0 | 16689 | const char *name; |
9dc481d3 | 16690 | |
639d11d3 | 16691 | child_die = die->child; |
c906108c SS |
16692 | while (child_die && child_die->tag) |
16693 | { | |
16694 | if (child_die->tag != DW_TAG_enumerator) | |
16695 | { | |
e7c27a73 | 16696 | process_die (child_die, cu); |
c906108c SS |
16697 | } |
16698 | else | |
16699 | { | |
39cbfefa DJ |
16700 | name = dwarf2_name (child_die, cu); |
16701 | if (name) | |
ed6acedd | 16702 | new_symbol (child_die, this_type, cu); |
c906108c SS |
16703 | } |
16704 | ||
436c571c | 16705 | child_die = child_die->sibling; |
c906108c | 16706 | } |
c906108c | 16707 | } |
134d01f1 | 16708 | |
6c83ed52 TT |
16709 | /* If we are reading an enum from a .debug_types unit, and the enum |
16710 | is a declaration, and the enum is not the signatured type in the | |
16711 | unit, then we do not want to add a symbol for it. Adding a | |
16712 | symbol would in some cases obscure the true definition of the | |
16713 | enum, giving users an incomplete type when the definition is | |
16714 | actually available. Note that we do not want to do this for all | |
16715 | enums which are just declarations, because C++0x allows forward | |
16716 | enum declarations. */ | |
3019eac3 | 16717 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16718 | && die_is_declaration (die, cu)) |
16719 | { | |
52dc124a | 16720 | struct signatured_type *sig_type; |
6c83ed52 | 16721 | |
c0f78cd4 | 16722 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16723 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16724 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16725 | return; |
16726 | } | |
16727 | ||
f792889a | 16728 | new_symbol (die, this_type, cu); |
c906108c SS |
16729 | } |
16730 | ||
16731 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16732 | the DIE's type field. For now, this only handles one dimensional | |
16733 | arrays. */ | |
16734 | ||
f792889a | 16735 | static struct type * |
e7c27a73 | 16736 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16737 | { |
5e22e966 | 16738 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16739 | struct die_info *child_die; |
7e314c57 | 16740 | struct type *type; |
c906108c | 16741 | struct type *element_type, *range_type, *index_type; |
c906108c | 16742 | struct attribute *attr; |
15d034d0 | 16743 | const char *name; |
a405673c | 16744 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16745 | unsigned int bit_stride = 0; |
c906108c | 16746 | |
e7c27a73 | 16747 | element_type = die_type (die, cu); |
c906108c | 16748 | |
7e314c57 JK |
16749 | /* The die_type call above may have already set the type for this DIE. */ |
16750 | type = get_die_type (die, cu); | |
16751 | if (type) | |
16752 | return type; | |
16753 | ||
dc53a7ad JB |
16754 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16755 | if (attr != NULL) | |
a405673c JB |
16756 | { |
16757 | int stride_ok; | |
293e7e51 | 16758 | struct type *prop_type = cu->addr_sized_int_type (false); |
a405673c JB |
16759 | |
16760 | byte_stride_prop | |
16761 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
16762 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
16763 | prop_type); | |
a405673c JB |
16764 | if (!stride_ok) |
16765 | { | |
b98664d3 | 16766 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16767 | " - DIE at %s [in module %s]"), |
16768 | sect_offset_str (die->sect_off), | |
5e22e966 | 16769 | objfile_name (cu->per_objfile->objfile)); |
a405673c JB |
16770 | /* Ignore this attribute. We will likely not be able to print |
16771 | arrays of this type correctly, but there is little we can do | |
16772 | to help if we cannot read the attribute's value. */ | |
16773 | byte_stride_prop = NULL; | |
16774 | } | |
16775 | } | |
dc53a7ad JB |
16776 | |
16777 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16778 | if (attr != NULL) | |
16779 | bit_stride = DW_UNSND (attr); | |
16780 | ||
c906108c SS |
16781 | /* Irix 6.2 native cc creates array types without children for |
16782 | arrays with unspecified length. */ | |
639d11d3 | 16783 | if (die->child == NULL) |
c906108c | 16784 | { |
46bf5051 | 16785 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16786 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16787 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16788 | byte_stride_prop, bit_stride); |
f792889a | 16789 | return set_die_type (die, type, cu); |
c906108c SS |
16790 | } |
16791 | ||
791afaa2 | 16792 | std::vector<struct type *> range_types; |
639d11d3 | 16793 | child_die = die->child; |
c906108c SS |
16794 | while (child_die && child_die->tag) |
16795 | { | |
16796 | if (child_die->tag == DW_TAG_subrange_type) | |
16797 | { | |
f792889a | 16798 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16799 | |
f792889a | 16800 | if (child_type != NULL) |
a02abb62 | 16801 | { |
0963b4bd MS |
16802 | /* The range type was succesfully read. Save it for the |
16803 | array type creation. */ | |
791afaa2 | 16804 | range_types.push_back (child_type); |
a02abb62 | 16805 | } |
c906108c | 16806 | } |
436c571c | 16807 | child_die = child_die->sibling; |
c906108c SS |
16808 | } |
16809 | ||
16810 | /* Dwarf2 dimensions are output from left to right, create the | |
16811 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16812 | |
c906108c | 16813 | type = element_type; |
7ca2d3a3 DL |
16814 | |
16815 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16816 | { | |
16817 | int i = 0; | |
9a619af0 | 16818 | |
791afaa2 | 16819 | while (i < range_types.size ()) |
dc53a7ad | 16820 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16821 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16822 | } |
16823 | else | |
16824 | { | |
791afaa2 | 16825 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16826 | while (ndim-- > 0) |
dc53a7ad | 16827 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16828 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16829 | } |
c906108c | 16830 | |
f5f8a009 EZ |
16831 | /* Understand Dwarf2 support for vector types (like they occur on |
16832 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16833 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16834 | custom vendor extension. The main difference between a regular | |
16835 | array and the vector variant is that vectors are passed by value | |
16836 | to functions. */ | |
e142c38c | 16837 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 16838 | if (attr != nullptr) |
ea37ba09 | 16839 | make_vector_type (type); |
f5f8a009 | 16840 | |
dbc98a8b KW |
16841 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16842 | implementation may choose to implement triple vectors using this | |
16843 | attribute. */ | |
16844 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16845 | if (attr != nullptr) |
dbc98a8b KW |
16846 | { |
16847 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16848 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16849 | else | |
b98664d3 | 16850 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16851 | "than the total size of elements")); |
dbc98a8b KW |
16852 | } |
16853 | ||
39cbfefa DJ |
16854 | name = dwarf2_name (die, cu); |
16855 | if (name) | |
d0e39ea2 | 16856 | type->set_name (name); |
6e70227d | 16857 | |
2b4424c3 TT |
16858 | maybe_set_alignment (cu, die, type); |
16859 | ||
0963b4bd | 16860 | /* Install the type in the die. */ |
7e314c57 JK |
16861 | set_die_type (die, type, cu); |
16862 | ||
16863 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16864 | set_descriptive_type (type, die, cu); |
16865 | ||
7e314c57 | 16866 | return type; |
c906108c SS |
16867 | } |
16868 | ||
7ca2d3a3 | 16869 | static enum dwarf_array_dim_ordering |
6e70227d | 16870 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16871 | { |
16872 | struct attribute *attr; | |
16873 | ||
16874 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16875 | ||
435d3d88 | 16876 | if (attr != nullptr) |
aead7601 | 16877 | return (enum dwarf_array_dim_ordering) DW_SND (attr); |
7ca2d3a3 | 16878 | |
0963b4bd MS |
16879 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16880 | opposite order to the dwarf2 specification, but data is still | |
16881 | laid out as per normal fortran. | |
7ca2d3a3 | 16882 | |
0963b4bd MS |
16883 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16884 | version checking. */ | |
7ca2d3a3 | 16885 | |
905e0470 PM |
16886 | if (cu->language == language_fortran |
16887 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16888 | { |
16889 | return DW_ORD_row_major; | |
16890 | } | |
16891 | ||
6e70227d | 16892 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16893 | { |
16894 | case array_column_major: | |
16895 | return DW_ORD_col_major; | |
16896 | case array_row_major: | |
16897 | default: | |
16898 | return DW_ORD_row_major; | |
16899 | }; | |
16900 | } | |
16901 | ||
72019c9c | 16902 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16903 | the DIE's type field. */ |
72019c9c | 16904 | |
f792889a | 16905 | static struct type * |
72019c9c GM |
16906 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16907 | { | |
7e314c57 JK |
16908 | struct type *domain_type, *set_type; |
16909 | struct attribute *attr; | |
f792889a | 16910 | |
7e314c57 JK |
16911 | domain_type = die_type (die, cu); |
16912 | ||
16913 | /* The die_type call above may have already set the type for this DIE. */ | |
16914 | set_type = get_die_type (die, cu); | |
16915 | if (set_type) | |
16916 | return set_type; | |
16917 | ||
16918 | set_type = create_set_type (NULL, domain_type); | |
16919 | ||
16920 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16921 | if (attr != nullptr) |
d09039dd | 16922 | TYPE_LENGTH (set_type) = DW_UNSND (attr); |
7e314c57 | 16923 | |
2b4424c3 TT |
16924 | maybe_set_alignment (cu, die, set_type); |
16925 | ||
f792889a | 16926 | return set_die_type (die, set_type, cu); |
72019c9c | 16927 | } |
7ca2d3a3 | 16928 | |
0971de02 TT |
16929 | /* A helper for read_common_block that creates a locexpr baton. |
16930 | SYM is the symbol which we are marking as computed. | |
16931 | COMMON_DIE is the DIE for the common block. | |
16932 | COMMON_LOC is the location expression attribute for the common | |
16933 | block itself. | |
16934 | MEMBER_LOC is the location expression attribute for the particular | |
16935 | member of the common block that we are processing. | |
16936 | CU is the CU from which the above come. */ | |
16937 | ||
16938 | static void | |
16939 | mark_common_block_symbol_computed (struct symbol *sym, | |
16940 | struct die_info *common_die, | |
16941 | struct attribute *common_loc, | |
16942 | struct attribute *member_loc, | |
16943 | struct dwarf2_cu *cu) | |
16944 | { | |
5e22e966 | 16945 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 16946 | struct objfile *objfile = per_objfile->objfile; |
0971de02 TT |
16947 | struct dwarf2_locexpr_baton *baton; |
16948 | gdb_byte *ptr; | |
16949 | unsigned int cu_off; | |
08feed99 | 16950 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
16951 | LONGEST offset = 0; |
16952 | ||
16953 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
16954 | gdb_assert (common_loc->form_is_block ()); |
16955 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 16956 | || member_loc->form_is_constant ()); |
0971de02 | 16957 | |
8d749320 | 16958 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 16959 | baton->per_objfile = per_objfile; |
0971de02 TT |
16960 | baton->per_cu = cu->per_cu; |
16961 | gdb_assert (baton->per_cu); | |
16962 | ||
16963 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16964 | ||
cd6c91b4 | 16965 | if (member_loc->form_is_constant ()) |
0971de02 | 16966 | { |
0826b30a | 16967 | offset = member_loc->constant_value (0); |
0971de02 TT |
16968 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
16969 | } | |
16970 | else | |
16971 | baton->size += DW_BLOCK (member_loc)->size; | |
16972 | ||
224c3ddb | 16973 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16974 | baton->data = ptr; |
16975 | ||
16976 | *ptr++ = DW_OP_call4; | |
9c541725 | 16977 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16978 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16979 | ptr += 4; | |
16980 | ||
cd6c91b4 | 16981 | if (member_loc->form_is_constant ()) |
0971de02 TT |
16982 | { |
16983 | *ptr++ = DW_OP_addr; | |
16984 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16985 | ptr += cu->header.addr_size; | |
16986 | } | |
16987 | else | |
16988 | { | |
16989 | /* We have to copy the data here, because DW_OP_call4 will only | |
16990 | use a DW_AT_location attribute. */ | |
16991 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16992 | ptr += DW_BLOCK (member_loc)->size; | |
16993 | } | |
16994 | ||
16995 | *ptr++ = DW_OP_plus; | |
16996 | gdb_assert (ptr - baton->data == baton->size); | |
16997 | ||
0971de02 | 16998 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16999 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
17000 | } |
17001 | ||
4357ac6c TT |
17002 | /* Create appropriate locally-scoped variables for all the |
17003 | DW_TAG_common_block entries. Also create a struct common_block | |
17004 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 17005 | is used to separate the common blocks name namespace from regular |
4357ac6c | 17006 | variable names. */ |
c906108c SS |
17007 | |
17008 | static void | |
e7c27a73 | 17009 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17010 | { |
0971de02 TT |
17011 | struct attribute *attr; |
17012 | ||
17013 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 17014 | if (attr != nullptr) |
0971de02 TT |
17015 | { |
17016 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 17017 | if (attr->form_is_block ()) |
0971de02 TT |
17018 | { |
17019 | /* Ok. */ | |
17020 | } | |
cd6c91b4 | 17021 | else if (attr->form_is_section_offset ()) |
0971de02 TT |
17022 | { |
17023 | dwarf2_complex_location_expr_complaint (); | |
17024 | attr = NULL; | |
17025 | } | |
17026 | else | |
17027 | { | |
17028 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17029 | "common block member"); | |
17030 | attr = NULL; | |
17031 | } | |
17032 | } | |
17033 | ||
639d11d3 | 17034 | if (die->child != NULL) |
c906108c | 17035 | { |
5e22e966 | 17036 | struct objfile *objfile = cu->per_objfile->objfile; |
4357ac6c TT |
17037 | struct die_info *child_die; |
17038 | size_t n_entries = 0, size; | |
17039 | struct common_block *common_block; | |
17040 | struct symbol *sym; | |
74ac6d43 | 17041 | |
4357ac6c TT |
17042 | for (child_die = die->child; |
17043 | child_die && child_die->tag; | |
436c571c | 17044 | child_die = child_die->sibling) |
4357ac6c TT |
17045 | ++n_entries; |
17046 | ||
17047 | size = (sizeof (struct common_block) | |
17048 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
17049 | common_block |
17050 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
17051 | size); | |
4357ac6c TT |
17052 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
17053 | common_block->n_entries = 0; | |
17054 | ||
17055 | for (child_die = die->child; | |
17056 | child_die && child_die->tag; | |
436c571c | 17057 | child_die = child_die->sibling) |
4357ac6c TT |
17058 | { |
17059 | /* Create the symbol in the DW_TAG_common_block block in the current | |
17060 | symbol scope. */ | |
e7c27a73 | 17061 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
17062 | if (sym != NULL) |
17063 | { | |
17064 | struct attribute *member_loc; | |
17065 | ||
17066 | common_block->contents[common_block->n_entries++] = sym; | |
17067 | ||
17068 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
17069 | cu); | |
17070 | if (member_loc) | |
17071 | { | |
17072 | /* GDB has handled this for a long time, but it is | |
17073 | not specified by DWARF. It seems to have been | |
17074 | emitted by gfortran at least as recently as: | |
17075 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 17076 | complaint (_("Variable in common block has " |
0971de02 | 17077 | "DW_AT_data_member_location " |
9d8780f0 SM |
17078 | "- DIE at %s [in module %s]"), |
17079 | sect_offset_str (child_die->sect_off), | |
518817b3 | 17080 | objfile_name (objfile)); |
0971de02 | 17081 | |
cd6c91b4 | 17082 | if (member_loc->form_is_section_offset ()) |
0971de02 | 17083 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 17084 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 17085 | || member_loc->form_is_block ()) |
0971de02 | 17086 | { |
435d3d88 | 17087 | if (attr != nullptr) |
0971de02 TT |
17088 | mark_common_block_symbol_computed (sym, die, attr, |
17089 | member_loc, cu); | |
17090 | } | |
17091 | else | |
17092 | dwarf2_complex_location_expr_complaint (); | |
17093 | } | |
17094 | } | |
c906108c | 17095 | } |
4357ac6c TT |
17096 | |
17097 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
17098 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
17099 | } |
17100 | } | |
17101 | ||
0114d602 | 17102 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 17103 | |
0114d602 DJ |
17104 | static struct type * |
17105 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 17106 | { |
5e22e966 | 17107 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17108 | const char *previous_prefix, *name; |
9219021c | 17109 | int is_anonymous; |
0114d602 DJ |
17110 | struct type *type; |
17111 | ||
17112 | /* For extensions, reuse the type of the original namespace. */ | |
17113 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
17114 | { | |
17115 | struct die_info *ext_die; | |
17116 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 17117 | |
0114d602 DJ |
17118 | ext_die = dwarf2_extension (die, &ext_cu); |
17119 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
17120 | |
17121 | /* EXT_CU may not be the same as CU. | |
02142a6c | 17122 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
17123 | return set_die_type (die, type, cu); |
17124 | } | |
9219021c | 17125 | |
e142c38c | 17126 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
17127 | |
17128 | /* Now build the name of the current namespace. */ | |
17129 | ||
0114d602 DJ |
17130 | previous_prefix = determine_prefix (die, cu); |
17131 | if (previous_prefix[0] != '\0') | |
17132 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 17133 | previous_prefix, name, 0, cu); |
0114d602 DJ |
17134 | |
17135 | /* Create the type. */ | |
19f392bc | 17136 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 17137 | |
60531b24 | 17138 | return set_die_type (die, type, cu); |
0114d602 DJ |
17139 | } |
17140 | ||
22cee43f | 17141 | /* Read a namespace scope. */ |
0114d602 DJ |
17142 | |
17143 | static void | |
17144 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
17145 | { | |
5e22e966 | 17146 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17147 | int is_anonymous; |
9219021c | 17148 | |
5c4e30ca DC |
17149 | /* Add a symbol associated to this if we haven't seen the namespace |
17150 | before. Also, add a using directive if it's an anonymous | |
17151 | namespace. */ | |
9219021c | 17152 | |
f2f0e013 | 17153 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
17154 | { |
17155 | struct type *type; | |
17156 | ||
0114d602 | 17157 | type = read_type_die (die, cu); |
e7c27a73 | 17158 | new_symbol (die, type, cu); |
5c4e30ca | 17159 | |
e8e80198 | 17160 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 17161 | if (is_anonymous) |
0114d602 DJ |
17162 | { |
17163 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 17164 | |
eb1e02fd | 17165 | std::vector<const char *> excludes; |
804d2729 | 17166 | add_using_directive (using_directives (cu), |
7d93a1e0 | 17167 | previous_prefix, type->name (), NULL, |
eb1e02fd | 17168 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 17169 | } |
5c4e30ca | 17170 | } |
9219021c | 17171 | |
639d11d3 | 17172 | if (die->child != NULL) |
d9fa45fe | 17173 | { |
639d11d3 | 17174 | struct die_info *child_die = die->child; |
6e70227d | 17175 | |
d9fa45fe DC |
17176 | while (child_die && child_die->tag) |
17177 | { | |
e7c27a73 | 17178 | process_die (child_die, cu); |
436c571c | 17179 | child_die = child_die->sibling; |
d9fa45fe DC |
17180 | } |
17181 | } | |
38d518c9 EZ |
17182 | } |
17183 | ||
f55ee35c JK |
17184 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
17185 | imported module. Still we need that type as local Fortran "use ... only" | |
17186 | declaration imports depend on the created type in determine_prefix. */ | |
17187 | ||
17188 | static struct type * | |
17189 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
17190 | { | |
5e22e966 | 17191 | struct objfile *objfile = cu->per_objfile->objfile; |
15d034d0 | 17192 | const char *module_name; |
f55ee35c JK |
17193 | struct type *type; |
17194 | ||
17195 | module_name = dwarf2_name (die, cu); | |
19f392bc | 17196 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 17197 | |
f55ee35c JK |
17198 | return set_die_type (die, type, cu); |
17199 | } | |
17200 | ||
5d7cb8df JK |
17201 | /* Read a Fortran module. */ |
17202 | ||
17203 | static void | |
17204 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
17205 | { | |
17206 | struct die_info *child_die = die->child; | |
530e8392 KB |
17207 | struct type *type; |
17208 | ||
17209 | type = read_type_die (die, cu); | |
17210 | new_symbol (die, type, cu); | |
5d7cb8df | 17211 | |
5d7cb8df JK |
17212 | while (child_die && child_die->tag) |
17213 | { | |
17214 | process_die (child_die, cu); | |
436c571c | 17215 | child_die = child_die->sibling; |
5d7cb8df JK |
17216 | } |
17217 | } | |
17218 | ||
38d518c9 EZ |
17219 | /* Return the name of the namespace represented by DIE. Set |
17220 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
17221 | namespace. */ | |
17222 | ||
17223 | static const char * | |
e142c38c | 17224 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
17225 | { |
17226 | struct die_info *current_die; | |
17227 | const char *name = NULL; | |
17228 | ||
17229 | /* Loop through the extensions until we find a name. */ | |
17230 | ||
17231 | for (current_die = die; | |
17232 | current_die != NULL; | |
f2f0e013 | 17233 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 17234 | { |
96553a0c DE |
17235 | /* We don't use dwarf2_name here so that we can detect the absence |
17236 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 17237 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 17238 | |
38d518c9 EZ |
17239 | if (name != NULL) |
17240 | break; | |
17241 | } | |
17242 | ||
17243 | /* Is it an anonymous namespace? */ | |
17244 | ||
17245 | *is_anonymous = (name == NULL); | |
17246 | if (*is_anonymous) | |
2b1dbab0 | 17247 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
17248 | |
17249 | return name; | |
d9fa45fe DC |
17250 | } |
17251 | ||
c906108c SS |
17252 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
17253 | the user defined type vector. */ | |
17254 | ||
f792889a | 17255 | static struct type * |
e7c27a73 | 17256 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17257 | { |
5e22e966 | 17258 | struct gdbarch *gdbarch = cu->per_objfile->objfile->arch (); |
e7c27a73 | 17259 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 17260 | struct type *type; |
8b2dbe47 KB |
17261 | struct attribute *attr_byte_size; |
17262 | struct attribute *attr_address_class; | |
17263 | int byte_size, addr_class; | |
7e314c57 JK |
17264 | struct type *target_type; |
17265 | ||
17266 | target_type = die_type (die, cu); | |
c906108c | 17267 | |
7e314c57 JK |
17268 | /* The die_type call above may have already set the type for this DIE. */ |
17269 | type = get_die_type (die, cu); | |
17270 | if (type) | |
17271 | return type; | |
17272 | ||
17273 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17274 | |
e142c38c | 17275 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
17276 | if (attr_byte_size) |
17277 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 17278 | else |
8b2dbe47 KB |
17279 | byte_size = cu_header->addr_size; |
17280 | ||
e142c38c | 17281 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
17282 | if (attr_address_class) |
17283 | addr_class = DW_UNSND (attr_address_class); | |
17284 | else | |
17285 | addr_class = DW_ADDR_none; | |
17286 | ||
2b4424c3 TT |
17287 | ULONGEST alignment = get_alignment (cu, die); |
17288 | ||
17289 | /* If the pointer size, alignment, or address class is different | |
17290 | than the default, create a type variant marked as such and set | |
17291 | the length accordingly. */ | |
17292 | if (TYPE_LENGTH (type) != byte_size | |
17293 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17294 | && alignment != TYPE_RAW_ALIGN (type)) | |
17295 | || addr_class != DW_ADDR_none) | |
c906108c | 17296 | { |
5e2b427d | 17297 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 | 17298 | { |
314ad88d PA |
17299 | type_instance_flags type_flags |
17300 | = gdbarch_address_class_type_flags (gdbarch, byte_size, | |
17301 | addr_class); | |
876cecd0 TT |
17302 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17303 | == 0); | |
8b2dbe47 KB |
17304 | type = make_type_with_address_space (type, type_flags); |
17305 | } | |
17306 | else if (TYPE_LENGTH (type) != byte_size) | |
17307 | { | |
b98664d3 | 17308 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17309 | } |
2b4424c3 TT |
17310 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17311 | { | |
b98664d3 | 17312 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17313 | " - DIE at %s [in module %s]"), |
17314 | sect_offset_str (die->sect_off), | |
5e22e966 | 17315 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 17316 | } |
6e70227d | 17317 | else |
9a619af0 MS |
17318 | { |
17319 | /* Should we also complain about unhandled address classes? */ | |
17320 | } | |
c906108c | 17321 | } |
8b2dbe47 KB |
17322 | |
17323 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17324 | set_type_align (type, alignment); |
f792889a | 17325 | return set_die_type (die, type, cu); |
c906108c SS |
17326 | } |
17327 | ||
17328 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17329 | the user defined type vector. */ | |
17330 | ||
f792889a | 17331 | static struct type * |
e7c27a73 | 17332 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17333 | { |
17334 | struct type *type; | |
17335 | struct type *to_type; | |
17336 | struct type *domain; | |
17337 | ||
e7c27a73 DJ |
17338 | to_type = die_type (die, cu); |
17339 | domain = die_containing_type (die, cu); | |
0d5de010 | 17340 | |
7e314c57 JK |
17341 | /* The calls above may have already set the type for this DIE. */ |
17342 | type = get_die_type (die, cu); | |
17343 | if (type) | |
17344 | return type; | |
17345 | ||
78134374 | 17346 | if (check_typedef (to_type)->code () == TYPE_CODE_METHOD) |
0d5de010 | 17347 | type = lookup_methodptr_type (to_type); |
78134374 | 17348 | else if (check_typedef (to_type)->code () == TYPE_CODE_FUNC) |
7078baeb | 17349 | { |
5e22e966 | 17350 | struct type *new_type = alloc_type (cu->per_objfile->objfile); |
7078baeb TT |
17351 | |
17352 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
80fc5e77 | 17353 | to_type->fields (), to_type->num_fields (), |
a409645d | 17354 | to_type->has_varargs ()); |
7078baeb TT |
17355 | type = lookup_methodptr_type (new_type); |
17356 | } | |
0d5de010 DJ |
17357 | else |
17358 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17359 | |
f792889a | 17360 | return set_die_type (die, type, cu); |
c906108c SS |
17361 | } |
17362 | ||
4297a3f0 | 17363 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17364 | the user defined type vector. */ |
17365 | ||
f792889a | 17366 | static struct type * |
4297a3f0 AV |
17367 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
17368 | enum type_code refcode) | |
c906108c | 17369 | { |
e7c27a73 | 17370 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17371 | struct type *type, *target_type; |
c906108c SS |
17372 | struct attribute *attr; |
17373 | ||
4297a3f0 AV |
17374 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17375 | ||
7e314c57 JK |
17376 | target_type = die_type (die, cu); |
17377 | ||
17378 | /* The die_type call above may have already set the type for this DIE. */ | |
17379 | type = get_die_type (die, cu); | |
17380 | if (type) | |
17381 | return type; | |
17382 | ||
4297a3f0 | 17383 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17384 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17385 | if (attr != nullptr) |
c906108c SS |
17386 | { |
17387 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
17388 | } | |
17389 | else | |
17390 | { | |
107d2387 | 17391 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17392 | } |
2b4424c3 | 17393 | maybe_set_alignment (cu, die, type); |
f792889a | 17394 | return set_die_type (die, type, cu); |
c906108c SS |
17395 | } |
17396 | ||
cf363f18 MW |
17397 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17398 | outputs DWARF type qualifiers that apply to an array, not the | |
17399 | element type. But GDB relies on the array element type to carry | |
17400 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17401 | specification. */ | |
17402 | ||
17403 | static struct type * | |
17404 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17405 | struct type *base_type, int cnst, int voltl) | |
17406 | { | |
17407 | struct type *el_type, *inner_array; | |
17408 | ||
17409 | base_type = copy_type (base_type); | |
17410 | inner_array = base_type; | |
17411 | ||
78134374 | 17412 | while (TYPE_TARGET_TYPE (inner_array)->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17413 | { |
17414 | TYPE_TARGET_TYPE (inner_array) = | |
17415 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17416 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17417 | } | |
17418 | ||
17419 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17420 | cnst |= TYPE_CONST (el_type); | |
17421 | voltl |= TYPE_VOLATILE (el_type); | |
17422 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17423 | ||
17424 | return set_die_type (die, base_type, cu); | |
17425 | } | |
17426 | ||
f792889a | 17427 | static struct type * |
e7c27a73 | 17428 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17429 | { |
f792889a | 17430 | struct type *base_type, *cv_type; |
c906108c | 17431 | |
e7c27a73 | 17432 | base_type = die_type (die, cu); |
7e314c57 JK |
17433 | |
17434 | /* The die_type call above may have already set the type for this DIE. */ | |
17435 | cv_type = get_die_type (die, cu); | |
17436 | if (cv_type) | |
17437 | return cv_type; | |
17438 | ||
2f608a3a KW |
17439 | /* In case the const qualifier is applied to an array type, the element type |
17440 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
78134374 | 17441 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 | 17442 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17443 | |
f792889a DJ |
17444 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17445 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17446 | } |
17447 | ||
f792889a | 17448 | static struct type * |
e7c27a73 | 17449 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17450 | { |
f792889a | 17451 | struct type *base_type, *cv_type; |
c906108c | 17452 | |
e7c27a73 | 17453 | base_type = die_type (die, cu); |
7e314c57 JK |
17454 | |
17455 | /* The die_type call above may have already set the type for this DIE. */ | |
17456 | cv_type = get_die_type (die, cu); | |
17457 | if (cv_type) | |
17458 | return cv_type; | |
17459 | ||
cf363f18 MW |
17460 | /* In case the volatile qualifier is applied to an array type, the |
17461 | element type is so qualified, not the array type (section 6.7.3 | |
17462 | of C99). */ | |
78134374 | 17463 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17464 | return add_array_cv_type (die, cu, base_type, 0, 1); |
17465 | ||
f792889a DJ |
17466 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17467 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17468 | } |
17469 | ||
06d66ee9 TT |
17470 | /* Handle DW_TAG_restrict_type. */ |
17471 | ||
17472 | static struct type * | |
17473 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17474 | { | |
17475 | struct type *base_type, *cv_type; | |
17476 | ||
17477 | base_type = die_type (die, cu); | |
17478 | ||
17479 | /* The die_type call above may have already set the type for this DIE. */ | |
17480 | cv_type = get_die_type (die, cu); | |
17481 | if (cv_type) | |
17482 | return cv_type; | |
17483 | ||
17484 | cv_type = make_restrict_type (base_type); | |
17485 | return set_die_type (die, cv_type, cu); | |
17486 | } | |
17487 | ||
a2c2acaf MW |
17488 | /* Handle DW_TAG_atomic_type. */ |
17489 | ||
17490 | static struct type * | |
17491 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17492 | { | |
17493 | struct type *base_type, *cv_type; | |
17494 | ||
17495 | base_type = die_type (die, cu); | |
17496 | ||
17497 | /* The die_type call above may have already set the type for this DIE. */ | |
17498 | cv_type = get_die_type (die, cu); | |
17499 | if (cv_type) | |
17500 | return cv_type; | |
17501 | ||
17502 | cv_type = make_atomic_type (base_type); | |
17503 | return set_die_type (die, cv_type, cu); | |
17504 | } | |
17505 | ||
c906108c SS |
17506 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17507 | the user defined type vector. It isn't really a user defined type, | |
17508 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17509 | attribute to reference it. */ | |
17510 | ||
f792889a | 17511 | static struct type * |
e7c27a73 | 17512 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17513 | { |
5e22e966 | 17514 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 17515 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
17516 | struct type *type, *range_type, *index_type, *char_type; |
17517 | struct attribute *attr; | |
216a7e6b AB |
17518 | struct dynamic_prop prop; |
17519 | bool length_is_constant = true; | |
17520 | LONGEST length; | |
17521 | ||
17522 | /* There are a couple of places where bit sizes might be made use of | |
17523 | when parsing a DW_TAG_string_type, however, no producer that we know | |
17524 | of make use of these. Handling bit sizes that are a multiple of the | |
17525 | byte size is easy enough, but what about other bit sizes? Lets deal | |
17526 | with that problem when we have to. Warn about these attributes being | |
17527 | unsupported, then parse the type and ignore them like we always | |
17528 | have. */ | |
17529 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
17530 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
17531 | { | |
17532 | static bool warning_printed = false; | |
17533 | if (!warning_printed) | |
17534 | { | |
17535 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
17536 | "currently supported on DW_TAG_string_type.")); | |
17537 | warning_printed = true; | |
17538 | } | |
17539 | } | |
c906108c | 17540 | |
e142c38c | 17541 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 17542 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
17543 | { |
17544 | /* The string length describes the location at which the length of | |
17545 | the string can be found. The size of the length field can be | |
17546 | specified with one of the attributes below. */ | |
17547 | struct type *prop_type; | |
17548 | struct attribute *len | |
17549 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
17550 | if (len == nullptr) | |
17551 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 17552 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
17553 | { |
17554 | /* Pass 0 as the default as we know this attribute is constant | |
17555 | and the default value will not be returned. */ | |
0826b30a | 17556 | LONGEST sz = len->constant_value (0); |
293e7e51 | 17557 | prop_type = cu->per_objfile->int_type (sz, true); |
216a7e6b AB |
17558 | } |
17559 | else | |
17560 | { | |
17561 | /* If the size is not specified then we assume it is the size of | |
17562 | an address on this target. */ | |
293e7e51 | 17563 | prop_type = cu->addr_sized_int_type (true); |
216a7e6b AB |
17564 | } |
17565 | ||
17566 | /* Convert the attribute into a dynamic property. */ | |
17567 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17568 | length = 1; | |
17569 | else | |
17570 | length_is_constant = false; | |
17571 | } | |
17572 | else if (attr != nullptr) | |
17573 | { | |
17574 | /* This DW_AT_string_length just contains the length with no | |
17575 | indirection. There's no need to create a dynamic property in this | |
17576 | case. Pass 0 for the default value as we know it will not be | |
17577 | returned in this case. */ | |
0826b30a | 17578 | length = attr->constant_value (0); |
216a7e6b AB |
17579 | } |
17580 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17581 | { |
216a7e6b | 17582 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 17583 | length = attr->constant_value (1); |
c906108c SS |
17584 | } |
17585 | else | |
17586 | { | |
216a7e6b AB |
17587 | /* Use 1 as a fallback length if we have nothing else. */ |
17588 | length = 1; | |
c906108c | 17589 | } |
6ccb9162 | 17590 | |
46bf5051 | 17591 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17592 | if (length_is_constant) |
17593 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17594 | else | |
17595 | { | |
17596 | struct dynamic_prop low_bound; | |
17597 | ||
8c2e4e06 | 17598 | low_bound.set_const_val (1); |
216a7e6b AB |
17599 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); |
17600 | } | |
3b7538c0 UW |
17601 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17602 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17603 | |
f792889a | 17604 | return set_die_type (die, type, cu); |
c906108c SS |
17605 | } |
17606 | ||
4d804846 JB |
17607 | /* Assuming that DIE corresponds to a function, returns nonzero |
17608 | if the function is prototyped. */ | |
17609 | ||
17610 | static int | |
17611 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17612 | { | |
17613 | struct attribute *attr; | |
17614 | ||
17615 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17616 | if (attr && (DW_UNSND (attr) != 0)) | |
17617 | return 1; | |
17618 | ||
17619 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17620 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17621 | languages that allow unprototyped functions (Eg: Objective C). |
17622 | For all other languages, assume that functions are always | |
17623 | prototyped. */ | |
17624 | if (cu->language != language_c | |
17625 | && cu->language != language_objc | |
17626 | && cu->language != language_opencl) | |
17627 | return 1; | |
17628 | ||
17629 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17630 | prototyped and unprototyped functions; default to prototyped, | |
17631 | since that is more common in modern code (and RealView warns | |
17632 | about unprototyped functions). */ | |
17633 | if (producer_is_realview (cu->producer)) | |
17634 | return 1; | |
17635 | ||
17636 | return 0; | |
17637 | } | |
17638 | ||
c906108c SS |
17639 | /* Handle DIES due to C code like: |
17640 | ||
17641 | struct foo | |
c5aa993b JM |
17642 | { |
17643 | int (*funcp)(int a, long l); | |
17644 | int b; | |
17645 | }; | |
c906108c | 17646 | |
0963b4bd | 17647 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17648 | |
f792889a | 17649 | static struct type * |
e7c27a73 | 17650 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17651 | { |
5e22e966 | 17652 | struct objfile *objfile = cu->per_objfile->objfile; |
0963b4bd MS |
17653 | struct type *type; /* Type that this function returns. */ |
17654 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17655 | struct attribute *attr; |
17656 | ||
e7c27a73 | 17657 | type = die_type (die, cu); |
7e314c57 JK |
17658 | |
17659 | /* The die_type call above may have already set the type for this DIE. */ | |
17660 | ftype = get_die_type (die, cu); | |
17661 | if (ftype) | |
17662 | return ftype; | |
17663 | ||
0c8b41f1 | 17664 | ftype = lookup_function_type (type); |
c906108c | 17665 | |
4d804846 | 17666 | if (prototyped_function_p (die, cu)) |
27e69b7a | 17667 | ftype->set_is_prototyped (true); |
c906108c | 17668 | |
c055b101 CV |
17669 | /* Store the calling convention in the type if it's available in |
17670 | the subroutine die. Otherwise set the calling convention to | |
17671 | the default value DW_CC_normal. */ | |
17672 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf TBA |
17673 | if (attr != nullptr |
17674 | && is_valid_DW_AT_calling_convention_for_subroutine (DW_UNSND (attr))) | |
17675 | TYPE_CALLING_CONVENTION (ftype) | |
17676 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
54fcddd0 UW |
17677 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
17678 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17679 | else | |
17680 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17681 | |
743649fd MW |
17682 | /* Record whether the function returns normally to its caller or not |
17683 | if the DWARF producer set that information. */ | |
17684 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17685 | if (attr && (DW_UNSND (attr) != 0)) | |
17686 | TYPE_NO_RETURN (ftype) = 1; | |
17687 | ||
76c10ea2 GM |
17688 | /* We need to add the subroutine type to the die immediately so |
17689 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17690 | declared as the same subroutine type. */ |
76c10ea2 | 17691 | set_die_type (die, ftype, cu); |
6e70227d | 17692 | |
639d11d3 | 17693 | if (die->child != NULL) |
c906108c | 17694 | { |
bb5ed363 | 17695 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17696 | struct die_info *child_die; |
8072405b | 17697 | int nparams, iparams; |
c906108c SS |
17698 | |
17699 | /* Count the number of parameters. | |
17700 | FIXME: GDB currently ignores vararg functions, but knows about | |
17701 | vararg member functions. */ | |
8072405b | 17702 | nparams = 0; |
639d11d3 | 17703 | child_die = die->child; |
c906108c SS |
17704 | while (child_die && child_die->tag) |
17705 | { | |
17706 | if (child_die->tag == DW_TAG_formal_parameter) | |
17707 | nparams++; | |
17708 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
1d6286ed SM |
17709 | ftype->set_has_varargs (true); |
17710 | ||
436c571c | 17711 | child_die = child_die->sibling; |
c906108c SS |
17712 | } |
17713 | ||
17714 | /* Allocate storage for parameters and fill them in. */ | |
5e33d5f4 | 17715 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
17716 | ftype->set_fields |
17717 | ((struct field *) TYPE_ZALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 17718 | |
8072405b JK |
17719 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17720 | even if we error out during the parameters reading below. */ | |
17721 | for (iparams = 0; iparams < nparams; iparams++) | |
5d14b6e5 | 17722 | ftype->field (iparams).set_type (void_type); |
8072405b JK |
17723 | |
17724 | iparams = 0; | |
639d11d3 | 17725 | child_die = die->child; |
c906108c SS |
17726 | while (child_die && child_die->tag) |
17727 | { | |
17728 | if (child_die->tag == DW_TAG_formal_parameter) | |
17729 | { | |
3ce3b1ba PA |
17730 | struct type *arg_type; |
17731 | ||
17732 | /* DWARF version 2 has no clean way to discern C++ | |
17733 | static and non-static member functions. G++ helps | |
17734 | GDB by marking the first parameter for non-static | |
17735 | member functions (which is the this pointer) as | |
17736 | artificial. We pass this information to | |
17737 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17738 | ||
17739 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17740 | 4.5 does not yet generate. */ | |
e142c38c | 17741 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 17742 | if (attr != nullptr) |
c906108c SS |
17743 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); |
17744 | else | |
9c37b5ae | 17745 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17746 | arg_type = die_type (child_die, cu); |
17747 | ||
17748 | /* RealView does not mark THIS as const, which the testsuite | |
17749 | expects. GCC marks THIS as const in method definitions, | |
17750 | but not in the class specifications (GCC PR 43053). */ | |
17751 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17752 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17753 | { | |
17754 | int is_this = 0; | |
17755 | struct dwarf2_cu *arg_cu = cu; | |
17756 | const char *name = dwarf2_name (child_die, cu); | |
17757 | ||
17758 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 17759 | if (attr != nullptr) |
3ce3b1ba PA |
17760 | { |
17761 | /* If the compiler emits this, use it. */ | |
17762 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17763 | is_this = 1; | |
17764 | } | |
17765 | else if (name && strcmp (name, "this") == 0) | |
17766 | /* Function definitions will have the argument names. */ | |
17767 | is_this = 1; | |
17768 | else if (name == NULL && iparams == 0) | |
17769 | /* Declarations may not have the names, so like | |
17770 | elsewhere in GDB, assume an artificial first | |
17771 | argument is "this". */ | |
17772 | is_this = 1; | |
17773 | ||
17774 | if (is_this) | |
17775 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17776 | arg_type, 0); | |
17777 | } | |
17778 | ||
5d14b6e5 | 17779 | ftype->field (iparams).set_type (arg_type); |
c906108c SS |
17780 | iparams++; |
17781 | } | |
436c571c | 17782 | child_die = child_die->sibling; |
c906108c SS |
17783 | } |
17784 | } | |
17785 | ||
76c10ea2 | 17786 | return ftype; |
c906108c SS |
17787 | } |
17788 | ||
f792889a | 17789 | static struct type * |
e7c27a73 | 17790 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17791 | { |
5e22e966 | 17792 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17793 | const char *name = NULL; |
3c8e0968 | 17794 | struct type *this_type, *target_type; |
c906108c | 17795 | |
94af9270 | 17796 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc | 17797 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
8f53807e | 17798 | this_type->set_target_is_stub (true); |
f792889a | 17799 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17800 | target_type = die_type (die, cu); |
17801 | if (target_type != this_type) | |
17802 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17803 | else | |
17804 | { | |
17805 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17806 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17807 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17808 | "- DIE at %s [in module %s]"), |
17809 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17810 | TYPE_TARGET_TYPE (this_type) = NULL; |
17811 | } | |
e4003a34 TV |
17812 | if (name == NULL) |
17813 | { | |
17814 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
17815 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
17816 | Handle these by just returning the target type, rather than | |
17817 | constructing an anonymous typedef type and trying to handle this | |
17818 | elsewhere. */ | |
17819 | set_die_type (die, target_type, cu); | |
17820 | return target_type; | |
17821 | } | |
f792889a | 17822 | return this_type; |
c906108c SS |
17823 | } |
17824 | ||
9b790ce7 UW |
17825 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17826 | (which may be different from NAME) to the architecture back-end to allow | |
17827 | it to guess the correct format if necessary. */ | |
17828 | ||
17829 | static struct type * | |
17830 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 17831 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 17832 | { |
08feed99 | 17833 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
17834 | const struct floatformat **format; |
17835 | struct type *type; | |
17836 | ||
17837 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17838 | if (format) | |
103a685e | 17839 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 17840 | else |
77b7c781 | 17841 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17842 | |
17843 | return type; | |
17844 | } | |
17845 | ||
eb77c9df AB |
17846 | /* Allocate an integer type of size BITS and name NAME. */ |
17847 | ||
17848 | static struct type * | |
17849 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
17850 | int bits, int unsigned_p, const char *name) | |
17851 | { | |
17852 | struct type *type; | |
17853 | ||
17854 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
17855 | instead of using DW_TAG_unspecified_type. This has been seen on | |
17856 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
17857 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
17858 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
17859 | type = objfile_type (objfile)->builtin_void; |
17860 | else | |
17861 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
17862 | ||
17863 | return type; | |
17864 | } | |
17865 | ||
8bdc1658 AB |
17866 | /* Initialise and return a floating point type of size BITS suitable for |
17867 | use as a component of a complex number. The NAME_HINT is passed through | |
17868 | when initialising the floating point type and is the name of the complex | |
17869 | type. | |
17870 | ||
17871 | As DWARF doesn't currently provide an explicit name for the components | |
17872 | of a complex number, but it can be helpful to have these components | |
17873 | named, we try to select a suitable name based on the size of the | |
17874 | component. */ | |
17875 | static struct type * | |
17876 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
17877 | struct objfile *objfile, | |
103a685e TT |
17878 | int bits, const char *name_hint, |
17879 | enum bfd_endian byte_order) | |
8bdc1658 | 17880 | { |
08feed99 | 17881 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
17882 | struct type *tt = nullptr; |
17883 | ||
35add35e AB |
17884 | /* Try to find a suitable floating point builtin type of size BITS. |
17885 | We're going to use the name of this type as the name for the complex | |
17886 | target type that we are about to create. */ | |
1db455a7 | 17887 | switch (cu->language) |
8bdc1658 | 17888 | { |
1db455a7 AB |
17889 | case language_fortran: |
17890 | switch (bits) | |
17891 | { | |
17892 | case 32: | |
17893 | tt = builtin_f_type (gdbarch)->builtin_real; | |
17894 | break; | |
17895 | case 64: | |
17896 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
17897 | break; | |
17898 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17899 | case 128: | |
17900 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
17901 | break; | |
17902 | } | |
8bdc1658 | 17903 | break; |
1db455a7 AB |
17904 | default: |
17905 | switch (bits) | |
17906 | { | |
17907 | case 32: | |
17908 | tt = builtin_type (gdbarch)->builtin_float; | |
17909 | break; | |
17910 | case 64: | |
17911 | tt = builtin_type (gdbarch)->builtin_double; | |
17912 | break; | |
17913 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17914 | case 128: | |
17915 | tt = builtin_type (gdbarch)->builtin_long_double; | |
17916 | break; | |
17917 | } | |
8bdc1658 AB |
17918 | break; |
17919 | } | |
17920 | ||
35add35e AB |
17921 | /* If the type we found doesn't match the size we were looking for, then |
17922 | pretend we didn't find a type at all, the complex target type we | |
17923 | create will then be nameless. */ | |
a12e5744 | 17924 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
17925 | tt = nullptr; |
17926 | ||
7d93a1e0 | 17927 | const char *name = (tt == nullptr) ? nullptr : tt->name (); |
103a685e | 17928 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
17929 | } |
17930 | ||
c906108c SS |
17931 | /* Find a representation of a given base type and install |
17932 | it in the TYPE field of the die. */ | |
17933 | ||
f792889a | 17934 | static struct type * |
e7c27a73 | 17935 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17936 | { |
5e22e966 | 17937 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
17938 | struct type *type; |
17939 | struct attribute *attr; | |
19f392bc | 17940 | int encoding = 0, bits = 0; |
15d034d0 | 17941 | const char *name; |
34877895 | 17942 | gdbarch *arch; |
c906108c | 17943 | |
e142c38c | 17944 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
435d3d88 | 17945 | if (attr != nullptr) |
34877895 | 17946 | encoding = DW_UNSND (attr); |
e142c38c | 17947 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17948 | if (attr != nullptr) |
34877895 | 17949 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
39cbfefa | 17950 | name = dwarf2_name (die, cu); |
6ccb9162 | 17951 | if (!name) |
34877895 | 17952 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 17953 | |
08feed99 | 17954 | arch = objfile->arch (); |
103a685e TT |
17955 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
17956 | ||
34877895 PJ |
17957 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
17958 | if (attr) | |
103a685e TT |
17959 | { |
17960 | int endianity = DW_UNSND (attr); | |
17961 | ||
17962 | switch (endianity) | |
17963 | { | |
17964 | case DW_END_big: | |
17965 | byte_order = BFD_ENDIAN_BIG; | |
17966 | break; | |
17967 | case DW_END_little: | |
17968 | byte_order = BFD_ENDIAN_LITTLE; | |
17969 | break; | |
17970 | default: | |
17971 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
17972 | break; | |
17973 | } | |
17974 | } | |
6ccb9162 UW |
17975 | |
17976 | switch (encoding) | |
c906108c | 17977 | { |
6ccb9162 UW |
17978 | case DW_ATE_address: |
17979 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17980 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17981 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17982 | break; |
17983 | case DW_ATE_boolean: | |
19f392bc | 17984 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17985 | break; |
17986 | case DW_ATE_complex_float: | |
103a685e TT |
17987 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
17988 | byte_order); | |
78134374 | 17989 | if (type->code () == TYPE_CODE_ERROR) |
93689ce9 TT |
17990 | { |
17991 | if (name == nullptr) | |
17992 | { | |
17993 | struct obstack *obstack | |
5e22e966 | 17994 | = &cu->per_objfile->objfile->objfile_obstack; |
7d93a1e0 | 17995 | name = obconcat (obstack, "_Complex ", type->name (), |
93689ce9 TT |
17996 | nullptr); |
17997 | } | |
17998 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
17999 | } | |
18000 | else | |
18001 | type = init_complex_type (name, type); | |
6ccb9162 UW |
18002 | break; |
18003 | case DW_ATE_decimal_float: | |
19f392bc | 18004 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
18005 | break; |
18006 | case DW_ATE_float: | |
103a685e | 18007 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
18008 | break; |
18009 | case DW_ATE_signed: | |
eb77c9df | 18010 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18011 | break; |
18012 | case DW_ATE_unsigned: | |
3b2b8fea TT |
18013 | if (cu->language == language_fortran |
18014 | && name | |
61012eef | 18015 | && startswith (name, "character(")) |
19f392bc UW |
18016 | type = init_character_type (objfile, bits, 1, name); |
18017 | else | |
eb77c9df | 18018 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
18019 | break; |
18020 | case DW_ATE_signed_char: | |
6e70227d | 18021 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
18022 | || cu->language == language_pascal |
18023 | || cu->language == language_fortran) | |
19f392bc UW |
18024 | type = init_character_type (objfile, bits, 0, name); |
18025 | else | |
eb77c9df | 18026 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18027 | break; |
18028 | case DW_ATE_unsigned_char: | |
868a0084 | 18029 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 18030 | || cu->language == language_pascal |
c44af4eb TT |
18031 | || cu->language == language_fortran |
18032 | || cu->language == language_rust) | |
19f392bc UW |
18033 | type = init_character_type (objfile, bits, 1, name); |
18034 | else | |
eb77c9df | 18035 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 18036 | break; |
75079b2b | 18037 | case DW_ATE_UTF: |
53e710ac | 18038 | { |
53e710ac PA |
18039 | if (bits == 16) |
18040 | type = builtin_type (arch)->builtin_char16; | |
18041 | else if (bits == 32) | |
18042 | type = builtin_type (arch)->builtin_char32; | |
18043 | else | |
18044 | { | |
b98664d3 | 18045 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 18046 | bits); |
eb77c9df | 18047 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
18048 | } |
18049 | return set_die_type (die, type, cu); | |
18050 | } | |
75079b2b TT |
18051 | break; |
18052 | ||
6ccb9162 | 18053 | default: |
b98664d3 | 18054 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 18055 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 18056 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 18057 | break; |
c906108c | 18058 | } |
6ccb9162 | 18059 | |
0114d602 | 18060 | if (name && strcmp (name, "char") == 0) |
15152a54 | 18061 | type->set_has_no_signedness (true); |
0114d602 | 18062 | |
2b4424c3 TT |
18063 | maybe_set_alignment (cu, die, type); |
18064 | ||
db558e34 | 18065 | type->set_endianity_is_not_default (gdbarch_byte_order (arch) != byte_order); |
34877895 | 18066 | |
f792889a | 18067 | return set_die_type (die, type, cu); |
c906108c SS |
18068 | } |
18069 | ||
80180f79 SA |
18070 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
18071 | resulting value of the attribute into struct bound_prop. | |
18072 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
18073 | ||
18074 | static int | |
18075 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
18076 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
18077 | struct type *default_type) | |
80180f79 SA |
18078 | { |
18079 | struct dwarf2_property_baton *baton; | |
5e22e966 | 18080 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba TT |
18081 | struct objfile *objfile = per_objfile->objfile; |
18082 | struct obstack *obstack = &objfile->objfile_obstack; | |
80180f79 | 18083 | |
9a49df9d AB |
18084 | gdb_assert (default_type != NULL); |
18085 | ||
80180f79 SA |
18086 | if (attr == NULL || prop == NULL) |
18087 | return 0; | |
18088 | ||
4fc6c0d5 | 18089 | if (attr->form_is_block ()) |
80180f79 | 18090 | { |
8d749320 | 18091 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18092 | baton->property_type = default_type; |
80180f79 | 18093 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18094 | baton->locexpr.per_objfile = per_objfile; |
80180f79 SA |
18095 | baton->locexpr.size = DW_BLOCK (attr)->size; |
18096 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
216a7e6b AB |
18097 | switch (attr->name) |
18098 | { | |
18099 | case DW_AT_string_length: | |
18100 | baton->locexpr.is_reference = true; | |
18101 | break; | |
18102 | default: | |
18103 | baton->locexpr.is_reference = false; | |
18104 | break; | |
18105 | } | |
8c2e4e06 SM |
18106 | |
18107 | prop->set_locexpr (baton); | |
18108 | gdb_assert (prop->baton () != NULL); | |
80180f79 | 18109 | } |
cd6c91b4 | 18110 | else if (attr->form_is_ref ()) |
80180f79 SA |
18111 | { |
18112 | struct dwarf2_cu *target_cu = cu; | |
18113 | struct die_info *target_die; | |
18114 | struct attribute *target_attr; | |
18115 | ||
18116 | target_die = follow_die_ref (die, attr, &target_cu); | |
18117 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
18118 | if (target_attr == NULL) |
18119 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
18120 | target_cu); | |
80180f79 SA |
18121 | if (target_attr == NULL) |
18122 | return 0; | |
18123 | ||
df25ebbd | 18124 | switch (target_attr->name) |
80180f79 | 18125 | { |
df25ebbd | 18126 | case DW_AT_location: |
cd6c91b4 | 18127 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 18128 | { |
8d749320 | 18129 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18130 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18131 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
8c2e4e06 SM |
18132 | prop->set_loclist (baton); |
18133 | gdb_assert (prop->baton () != NULL); | |
df25ebbd | 18134 | } |
4fc6c0d5 | 18135 | else if (target_attr->form_is_block ()) |
df25ebbd | 18136 | { |
8d749320 | 18137 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18138 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18139 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18140 | baton->locexpr.per_objfile = per_objfile; |
df25ebbd JB |
18141 | baton->locexpr.size = DW_BLOCK (target_attr)->size; |
18142 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
9a49df9d | 18143 | baton->locexpr.is_reference = true; |
8c2e4e06 SM |
18144 | prop->set_locexpr (baton); |
18145 | gdb_assert (prop->baton () != NULL); | |
df25ebbd JB |
18146 | } |
18147 | else | |
18148 | { | |
18149 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
18150 | "dynamic property"); | |
18151 | return 0; | |
18152 | } | |
18153 | break; | |
18154 | case DW_AT_data_member_location: | |
18155 | { | |
18156 | LONGEST offset; | |
18157 | ||
18158 | if (!handle_data_member_location (target_die, target_cu, | |
18159 | &offset)) | |
18160 | return 0; | |
18161 | ||
8d749320 | 18162 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18163 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 18164 | target_cu); |
df25ebbd JB |
18165 | baton->offset_info.offset = offset; |
18166 | baton->offset_info.type = die_type (target_die, target_cu); | |
8c2e4e06 | 18167 | prop->set_addr_offset (baton); |
df25ebbd JB |
18168 | break; |
18169 | } | |
80180f79 SA |
18170 | } |
18171 | } | |
cd6c91b4 | 18172 | else if (attr->form_is_constant ()) |
8c2e4e06 | 18173 | prop->set_const_val (attr->constant_value (0)); |
80180f79 SA |
18174 | else |
18175 | { | |
18176 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
18177 | dwarf2_name (die, cu)); | |
18178 | return 0; | |
18179 | } | |
18180 | ||
18181 | return 1; | |
18182 | } | |
18183 | ||
09ba997f | 18184 | /* See read.h. */ |
9a49df9d | 18185 | |
09ba997f | 18186 | struct type * |
293e7e51 | 18187 | dwarf2_per_objfile::int_type (int size_in_bytes, bool unsigned_p) const |
9a49df9d | 18188 | { |
9a49df9d AB |
18189 | struct type *int_type; |
18190 | ||
18191 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
18192 | #define TRY_TYPE(F) \ |
18193 | int_type = (unsigned_p \ | |
18194 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
18195 | : objfile_type (objfile)->builtin_ ## F); \ | |
18196 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
18197 | return int_type |
18198 | ||
18199 | TRY_TYPE (char); | |
18200 | TRY_TYPE (short); | |
18201 | TRY_TYPE (int); | |
18202 | TRY_TYPE (long); | |
18203 | TRY_TYPE (long_long); | |
18204 | ||
18205 | #undef TRY_TYPE | |
18206 | ||
18207 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
18208 | } | |
18209 | ||
09ba997f | 18210 | /* See read.h. */ |
11a8b164 | 18211 | |
09ba997f | 18212 | struct type * |
293e7e51 | 18213 | dwarf2_cu::addr_sized_int_type (bool unsigned_p) const |
11a8b164 | 18214 | { |
293e7e51 SM |
18215 | int addr_size = this->per_cu->addr_size (); |
18216 | return this->per_objfile->int_type (addr_size, unsigned_p); | |
11a8b164 AB |
18217 | } |
18218 | ||
b86352cf AB |
18219 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
18220 | present (which is valid) then compute the default type based on the | |
18221 | compilation units address size. */ | |
18222 | ||
18223 | static struct type * | |
18224 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
18225 | { | |
18226 | struct type *index_type = die_type (die, cu); | |
18227 | ||
18228 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
18229 | without specifying a base type. | |
18230 | In that case, the base type must be set to the type of | |
18231 | the lower bound, upper bound or count, in that order, if any of these | |
18232 | three attributes references an object that has a type. | |
18233 | If no base type is found, the Dwarf-2 specifications say that | |
18234 | a signed integer type of size equal to the size of an address should | |
18235 | be used. | |
18236 | For the following C code: `extern char gdb_int [];' | |
18237 | GCC produces an empty range DIE. | |
18238 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
18239 | high bound or count are not yet handled by this code. */ | |
78134374 | 18240 | if (index_type->code () == TYPE_CODE_VOID) |
293e7e51 | 18241 | index_type = cu->addr_sized_int_type (false); |
b86352cf AB |
18242 | |
18243 | return index_type; | |
18244 | } | |
18245 | ||
a02abb62 JB |
18246 | /* Read the given DW_AT_subrange DIE. */ |
18247 | ||
f792889a | 18248 | static struct type * |
a02abb62 JB |
18249 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
18250 | { | |
4c9ad8c2 | 18251 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
18252 | struct type *range_type; |
18253 | struct attribute *attr; | |
729efb13 | 18254 | struct dynamic_prop low, high; |
4fae6e18 | 18255 | int low_default_is_valid; |
c451ebe5 | 18256 | int high_bound_is_count = 0; |
15d034d0 | 18257 | const char *name; |
d359392f | 18258 | ULONGEST negative_mask; |
e77813c8 | 18259 | |
b86352cf AB |
18260 | orig_base_type = read_subrange_index_type (die, cu); |
18261 | ||
4c9ad8c2 TT |
18262 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
18263 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
18264 | creating the range type, but we use the result of check_typedef | |
18265 | when examining properties of the type. */ | |
18266 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 18267 | |
7e314c57 JK |
18268 | /* The die_type call above may have already set the type for this DIE. */ |
18269 | range_type = get_die_type (die, cu); | |
18270 | if (range_type) | |
18271 | return range_type; | |
18272 | ||
8c2e4e06 | 18273 | high.set_const_val (0); |
729efb13 | 18274 | |
4fae6e18 JK |
18275 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
18276 | omitting DW_AT_lower_bound. */ | |
18277 | switch (cu->language) | |
6e70227d | 18278 | { |
4fae6e18 JK |
18279 | case language_c: |
18280 | case language_cplus: | |
8c2e4e06 | 18281 | low.set_const_val (0); |
4fae6e18 JK |
18282 | low_default_is_valid = 1; |
18283 | break; | |
18284 | case language_fortran: | |
8c2e4e06 | 18285 | low.set_const_val (1); |
4fae6e18 JK |
18286 | low_default_is_valid = 1; |
18287 | break; | |
18288 | case language_d: | |
4fae6e18 | 18289 | case language_objc: |
c44af4eb | 18290 | case language_rust: |
8c2e4e06 | 18291 | low.set_const_val (0); |
4fae6e18 JK |
18292 | low_default_is_valid = (cu->header.version >= 4); |
18293 | break; | |
18294 | case language_ada: | |
18295 | case language_m2: | |
18296 | case language_pascal: | |
8c2e4e06 | 18297 | low.set_const_val (1); |
4fae6e18 JK |
18298 | low_default_is_valid = (cu->header.version >= 4); |
18299 | break; | |
18300 | default: | |
8c2e4e06 | 18301 | low.set_const_val (0); |
4fae6e18 JK |
18302 | low_default_is_valid = 0; |
18303 | break; | |
a02abb62 JB |
18304 | } |
18305 | ||
e142c38c | 18306 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 18307 | if (attr != nullptr) |
9a49df9d | 18308 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 18309 | else if (!low_default_is_valid) |
b98664d3 | 18310 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
18311 | "- DIE at %s [in module %s]"), |
18312 | sect_offset_str (die->sect_off), | |
5e22e966 | 18313 | objfile_name (cu->per_objfile->objfile)); |
a02abb62 | 18314 | |
506f5c41 TV |
18315 | struct attribute *attr_ub, *attr_count; |
18316 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 18317 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 18318 | { |
506f5c41 | 18319 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 18320 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 18321 | { |
c451ebe5 | 18322 | /* If bounds are constant do the final calculation here. */ |
8c2e4e06 SM |
18323 | if (low.kind () == PROP_CONST && high.kind () == PROP_CONST) |
18324 | high.set_const_val (low.const_val () + high.const_val () - 1); | |
c451ebe5 SA |
18325 | else |
18326 | high_bound_is_count = 1; | |
c2ff108b | 18327 | } |
506f5c41 TV |
18328 | else |
18329 | { | |
18330 | if (attr_ub != NULL) | |
18331 | complaint (_("Unresolved DW_AT_upper_bound " | |
18332 | "- DIE at %s [in module %s]"), | |
18333 | sect_offset_str (die->sect_off), | |
5e22e966 | 18334 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 TV |
18335 | if (attr_count != NULL) |
18336 | complaint (_("Unresolved DW_AT_count " | |
18337 | "- DIE at %s [in module %s]"), | |
18338 | sect_offset_str (die->sect_off), | |
5e22e966 | 18339 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 | 18340 | } |
e77813c8 | 18341 | } |
a02abb62 | 18342 | |
4e962e74 TT |
18343 | LONGEST bias = 0; |
18344 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 18345 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 18346 | bias = bias_attr->constant_value (0); |
4e962e74 | 18347 | |
dbb9c2b1 JB |
18348 | /* Normally, the DWARF producers are expected to use a signed |
18349 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
18350 | But this is unfortunately not always the case, as witnessed | |
18351 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
18352 | is used instead. To work around that ambiguity, we treat | |
18353 | the bounds as signed, and thus sign-extend their values, when | |
18354 | the base type is signed. */ | |
6e70227d | 18355 | negative_mask = |
d359392f | 18356 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
8c2e4e06 | 18357 | if (low.kind () == PROP_CONST |
c6d940a9 | 18358 | && !base_type->is_unsigned () && (low.const_val () & negative_mask)) |
8c2e4e06 SM |
18359 | low.set_const_val (low.const_val () | negative_mask); |
18360 | if (high.kind () == PROP_CONST | |
c6d940a9 | 18361 | && !base_type->is_unsigned () && (high.const_val () & negative_mask)) |
8c2e4e06 | 18362 | high.set_const_val (high.const_val () | negative_mask); |
43bbcdc2 | 18363 | |
5bbd8269 AB |
18364 | /* Check for bit and byte strides. */ |
18365 | struct dynamic_prop byte_stride_prop; | |
18366 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
18367 | if (attr_byte_stride != nullptr) | |
18368 | { | |
293e7e51 | 18369 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
18370 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
18371 | prop_type); | |
18372 | } | |
18373 | ||
18374 | struct dynamic_prop bit_stride_prop; | |
18375 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
18376 | if (attr_bit_stride != nullptr) | |
18377 | { | |
18378 | /* It only makes sense to have either a bit or byte stride. */ | |
18379 | if (attr_byte_stride != nullptr) | |
18380 | { | |
18381 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
18382 | "- DIE at %s [in module %s]"), | |
18383 | sect_offset_str (die->sect_off), | |
5e22e966 | 18384 | objfile_name (cu->per_objfile->objfile)); |
5bbd8269 AB |
18385 | attr_bit_stride = nullptr; |
18386 | } | |
18387 | else | |
18388 | { | |
293e7e51 | 18389 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
18390 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
18391 | prop_type); | |
18392 | } | |
18393 | } | |
18394 | ||
18395 | if (attr_byte_stride != nullptr | |
18396 | || attr_bit_stride != nullptr) | |
18397 | { | |
18398 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
18399 | struct dynamic_prop *stride | |
18400 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
18401 | ||
18402 | range_type | |
18403 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
18404 | &high, bias, stride, byte_stride_p); | |
18405 | } | |
18406 | else | |
18407 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 18408 | |
c451ebe5 | 18409 | if (high_bound_is_count) |
599088e3 | 18410 | range_type->bounds ()->flag_upper_bound_is_count = 1; |
c451ebe5 | 18411 | |
c2ff108b JK |
18412 | /* Ada expects an empty array on no boundary attributes. */ |
18413 | if (attr == NULL && cu->language != language_ada) | |
8c2e4e06 | 18414 | range_type->bounds ()->high.set_undefined (); |
c2ff108b | 18415 | |
39cbfefa DJ |
18416 | name = dwarf2_name (die, cu); |
18417 | if (name) | |
d0e39ea2 | 18418 | range_type->set_name (name); |
6e70227d | 18419 | |
e142c38c | 18420 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 18421 | if (attr != nullptr) |
a02abb62 JB |
18422 | TYPE_LENGTH (range_type) = DW_UNSND (attr); |
18423 | ||
2b4424c3 TT |
18424 | maybe_set_alignment (cu, die, range_type); |
18425 | ||
7e314c57 JK |
18426 | set_die_type (die, range_type, cu); |
18427 | ||
18428 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
18429 | set_descriptive_type (range_type, die, cu); |
18430 | ||
7e314c57 | 18431 | return range_type; |
a02abb62 | 18432 | } |
6e70227d | 18433 | |
f792889a | 18434 | static struct type * |
81a17f79 JB |
18435 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
18436 | { | |
18437 | struct type *type; | |
81a17f79 | 18438 | |
5e22e966 | 18439 | type = init_type (cu->per_objfile->objfile, TYPE_CODE_VOID, 0, NULL); |
d0e39ea2 | 18440 | type->set_name (dwarf2_name (die, cu)); |
81a17f79 | 18441 | |
74a2f8ff | 18442 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 18443 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
18444 | such a type, we treat it as a stub, and try to resolve it later on, |
18445 | when needed. */ | |
18446 | if (cu->language == language_ada) | |
b4b73759 | 18447 | type->set_is_stub (true); |
74a2f8ff | 18448 | |
f792889a | 18449 | return set_die_type (die, type, cu); |
81a17f79 | 18450 | } |
a02abb62 | 18451 | |
639d11d3 DC |
18452 | /* Read a single die and all its descendents. Set the die's sibling |
18453 | field to NULL; set other fields in the die correctly, and set all | |
18454 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
18455 | location of the info_ptr after reading all of those dies. PARENT | |
18456 | is the parent of the die in question. */ | |
18457 | ||
18458 | static struct die_info * | |
dee91e82 | 18459 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
18460 | const gdb_byte *info_ptr, |
18461 | const gdb_byte **new_info_ptr, | |
dee91e82 | 18462 | struct die_info *parent) |
639d11d3 DC |
18463 | { |
18464 | struct die_info *die; | |
d521ce57 | 18465 | const gdb_byte *cur_ptr; |
639d11d3 | 18466 | |
3e225074 | 18467 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
18468 | if (die == NULL) |
18469 | { | |
18470 | *new_info_ptr = cur_ptr; | |
18471 | return NULL; | |
18472 | } | |
93311388 | 18473 | store_in_ref_table (die, reader->cu); |
639d11d3 | 18474 | |
3e225074 | 18475 | if (die->has_children) |
bf6af496 | 18476 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
18477 | else |
18478 | { | |
18479 | die->child = NULL; | |
18480 | *new_info_ptr = cur_ptr; | |
18481 | } | |
18482 | ||
18483 | die->sibling = NULL; | |
18484 | die->parent = parent; | |
18485 | return die; | |
18486 | } | |
18487 | ||
18488 | /* Read a die, all of its descendents, and all of its siblings; set | |
18489 | all of the fields of all of the dies correctly. Arguments are as | |
18490 | in read_die_and_children. */ | |
18491 | ||
18492 | static struct die_info * | |
bf6af496 | 18493 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
18494 | const gdb_byte *info_ptr, |
18495 | const gdb_byte **new_info_ptr, | |
bf6af496 | 18496 | struct die_info *parent) |
639d11d3 DC |
18497 | { |
18498 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 18499 | const gdb_byte *cur_ptr; |
639d11d3 | 18500 | |
c906108c | 18501 | cur_ptr = info_ptr; |
639d11d3 DC |
18502 | first_die = last_sibling = NULL; |
18503 | ||
18504 | while (1) | |
c906108c | 18505 | { |
639d11d3 | 18506 | struct die_info *die |
dee91e82 | 18507 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 18508 | |
1d325ec1 | 18509 | if (die == NULL) |
c906108c | 18510 | { |
639d11d3 DC |
18511 | *new_info_ptr = cur_ptr; |
18512 | return first_die; | |
c906108c | 18513 | } |
1d325ec1 DJ |
18514 | |
18515 | if (!first_die) | |
18516 | first_die = die; | |
c906108c | 18517 | else |
1d325ec1 DJ |
18518 | last_sibling->sibling = die; |
18519 | ||
18520 | last_sibling = die; | |
c906108c | 18521 | } |
c906108c SS |
18522 | } |
18523 | ||
bf6af496 DE |
18524 | /* Read a die, all of its descendents, and all of its siblings; set |
18525 | all of the fields of all of the dies correctly. Arguments are as | |
18526 | in read_die_and_children. | |
18527 | This the main entry point for reading a DIE and all its children. */ | |
18528 | ||
18529 | static struct die_info * | |
18530 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
18531 | const gdb_byte *info_ptr, |
18532 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
18533 | struct die_info *parent) |
18534 | { | |
18535 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
18536 | new_info_ptr, parent); | |
18537 | ||
b4f54984 | 18538 | if (dwarf_die_debug) |
bf6af496 DE |
18539 | { |
18540 | fprintf_unfiltered (gdb_stdlog, | |
18541 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18542 | reader->die_section->get_name (), |
bf6af496 DE |
18543 | (unsigned) (info_ptr - reader->die_section->buffer), |
18544 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18545 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
18546 | } |
18547 | ||
18548 | return die; | |
18549 | } | |
18550 | ||
3019eac3 DE |
18551 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18552 | attributes. | |
18553 | The caller is responsible for filling in the extra attributes | |
18554 | and updating (*DIEP)->num_attrs. | |
18555 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18556 | except for its child, sibling, and parent fields. */ |
93311388 | 18557 | |
d521ce57 | 18558 | static const gdb_byte * |
3019eac3 | 18559 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18560 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 18561 | int num_extra_attrs) |
93311388 | 18562 | { |
b64f50a1 | 18563 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
18564 | struct abbrev_info *abbrev; |
18565 | struct die_info *die; | |
18566 | struct dwarf2_cu *cu = reader->cu; | |
18567 | bfd *abfd = reader->abfd; | |
18568 | ||
9c541725 | 18569 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18570 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18571 | info_ptr += bytes_read; | |
18572 | if (!abbrev_number) | |
18573 | { | |
18574 | *diep = NULL; | |
93311388 DE |
18575 | return info_ptr; |
18576 | } | |
18577 | ||
685af9cd | 18578 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18579 | if (!abbrev) |
348e048f DE |
18580 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18581 | abbrev_number, | |
18582 | bfd_get_filename (abfd)); | |
18583 | ||
3019eac3 | 18584 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18585 | die->sect_off = sect_off; |
93311388 DE |
18586 | die->tag = abbrev->tag; |
18587 | die->abbrev = abbrev_number; | |
3e225074 | 18588 | die->has_children = abbrev->has_children; |
93311388 | 18589 | |
3019eac3 DE |
18590 | /* Make the result usable. |
18591 | The caller needs to update num_attrs after adding the extra | |
18592 | attributes. */ | |
93311388 DE |
18593 | die->num_attrs = abbrev->num_attrs; |
18594 | ||
18a8505e | 18595 | std::vector<int> indexes_that_need_reprocess; |
93311388 | 18596 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e AT |
18597 | { |
18598 | bool need_reprocess; | |
18599 | info_ptr = | |
18600 | read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], | |
18601 | info_ptr, &need_reprocess); | |
18602 | if (need_reprocess) | |
18603 | indexes_that_need_reprocess.push_back (i); | |
18604 | } | |
18605 | ||
052c8bb8 | 18606 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
18a8505e AT |
18607 | if (attr != nullptr) |
18608 | cu->str_offsets_base = DW_UNSND (attr); | |
93311388 | 18609 | |
41144253 | 18610 | attr = die->attr (DW_AT_loclists_base); |
18611 | if (attr != nullptr) | |
18612 | cu->loclist_base = DW_UNSND (attr); | |
18613 | ||
a39fdb41 | 18614 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
18615 | if (maybe_addr_base.has_value ()) |
18616 | cu->addr_base = *maybe_addr_base; | |
d0ce17d8 CT |
18617 | |
18618 | attr = die->attr (DW_AT_rnglists_base); | |
18619 | if (attr != nullptr) | |
18620 | cu->ranges_base = DW_UNSND (attr); | |
18621 | ||
18a8505e | 18622 | for (int index : indexes_that_need_reprocess) |
d0ce17d8 | 18623 | read_attribute_reprocess (reader, &die->attrs[index], die->tag); |
93311388 | 18624 | *diep = die; |
93311388 DE |
18625 | return info_ptr; |
18626 | } | |
18627 | ||
3019eac3 DE |
18628 | /* Read a die and all its attributes. |
18629 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18630 | except for its child, sibling, and parent fields. */ |
3019eac3 | 18631 | |
d521ce57 | 18632 | static const gdb_byte * |
3019eac3 | 18633 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 18634 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 18635 | { |
d521ce57 | 18636 | const gdb_byte *result; |
bf6af496 | 18637 | |
3e225074 | 18638 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 18639 | |
b4f54984 | 18640 | if (dwarf_die_debug) |
bf6af496 DE |
18641 | { |
18642 | fprintf_unfiltered (gdb_stdlog, | |
18643 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18644 | reader->die_section->get_name (), |
bf6af496 DE |
18645 | (unsigned) (info_ptr - reader->die_section->buffer), |
18646 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18647 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18648 | } |
18649 | ||
18650 | return result; | |
3019eac3 | 18651 | } |
433df2d4 | 18652 | \f |
c906108c | 18653 | |
72bf9492 DJ |
18654 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18655 | symbol for. */ | |
18656 | ||
18657 | static int | |
18658 | is_type_tag_for_partial (int tag) | |
18659 | { | |
18660 | switch (tag) | |
18661 | { | |
18662 | #if 0 | |
18663 | /* Some types that would be reasonable to generate partial symbols for, | |
18664 | that we don't at present. */ | |
18665 | case DW_TAG_array_type: | |
18666 | case DW_TAG_file_type: | |
18667 | case DW_TAG_ptr_to_member_type: | |
18668 | case DW_TAG_set_type: | |
18669 | case DW_TAG_string_type: | |
18670 | case DW_TAG_subroutine_type: | |
18671 | #endif | |
18672 | case DW_TAG_base_type: | |
18673 | case DW_TAG_class_type: | |
680b30c7 | 18674 | case DW_TAG_interface_type: |
72bf9492 DJ |
18675 | case DW_TAG_enumeration_type: |
18676 | case DW_TAG_structure_type: | |
18677 | case DW_TAG_subrange_type: | |
18678 | case DW_TAG_typedef: | |
18679 | case DW_TAG_union_type: | |
18680 | return 1; | |
18681 | default: | |
18682 | return 0; | |
18683 | } | |
18684 | } | |
18685 | ||
18686 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18687 | ||
18688 | static struct partial_die_info * | |
dee91e82 | 18689 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18690 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18691 | { |
dee91e82 | 18692 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 18693 | struct objfile *objfile = cu->per_objfile->objfile; |
72bf9492 | 18694 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18695 | unsigned int bytes_read; |
5afb4e99 | 18696 | unsigned int load_all = 0; |
72bf9492 DJ |
18697 | int nesting_level = 1; |
18698 | ||
18699 | parent_die = NULL; | |
18700 | last_die = NULL; | |
18701 | ||
7adf1e79 DE |
18702 | gdb_assert (cu->per_cu != NULL); |
18703 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18704 | load_all = 1; |
18705 | ||
72bf9492 DJ |
18706 | cu->partial_dies |
18707 | = htab_create_alloc_ex (cu->header.length / 12, | |
18708 | partial_die_hash, | |
18709 | partial_die_eq, | |
18710 | NULL, | |
18711 | &cu->comp_unit_obstack, | |
18712 | hashtab_obstack_allocate, | |
18713 | dummy_obstack_deallocate); | |
18714 | ||
72bf9492 DJ |
18715 | while (1) |
18716 | { | |
685af9cd | 18717 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18718 | |
18719 | /* A NULL abbrev means the end of a series of children. */ | |
18720 | if (abbrev == NULL) | |
18721 | { | |
18722 | if (--nesting_level == 0) | |
cd9983dd YQ |
18723 | return first_die; |
18724 | ||
72bf9492 DJ |
18725 | info_ptr += bytes_read; |
18726 | last_die = parent_die; | |
18727 | parent_die = parent_die->die_parent; | |
18728 | continue; | |
18729 | } | |
18730 | ||
98bfdba5 PA |
18731 | /* Check for template arguments. We never save these; if |
18732 | they're seen, we just mark the parent, and go on our way. */ | |
18733 | if (parent_die != NULL | |
18734 | && cu->language == language_cplus | |
18735 | && (abbrev->tag == DW_TAG_template_type_param | |
18736 | || abbrev->tag == DW_TAG_template_value_param)) | |
18737 | { | |
18738 | parent_die->has_template_arguments = 1; | |
18739 | ||
18740 | if (!load_all) | |
18741 | { | |
18742 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18743 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18744 | continue; |
18745 | } | |
18746 | } | |
18747 | ||
0d99eb77 | 18748 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18749 | Skip their other children. */ |
18750 | if (!load_all | |
18751 | && cu->language == language_cplus | |
18752 | && parent_die != NULL | |
f9b5d5ea TV |
18753 | && parent_die->tag == DW_TAG_subprogram |
18754 | && abbrev->tag != DW_TAG_inlined_subroutine) | |
98bfdba5 | 18755 | { |
dee91e82 | 18756 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18757 | continue; |
18758 | } | |
18759 | ||
5afb4e99 DJ |
18760 | /* Check whether this DIE is interesting enough to save. Normally |
18761 | we would not be interested in members here, but there may be | |
18762 | later variables referencing them via DW_AT_specification (for | |
18763 | static members). */ | |
18764 | if (!load_all | |
18765 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18766 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18767 | && abbrev->tag != DW_TAG_enumerator |
18768 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18769 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18770 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18771 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18772 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18773 | && abbrev->tag != DW_TAG_module |
95554aad | 18774 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18775 | && abbrev->tag != DW_TAG_imported_unit |
18776 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18777 | { |
18778 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18779 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18780 | continue; |
18781 | } | |
18782 | ||
6f06d47b YQ |
18783 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18784 | abbrev); | |
cd9983dd | 18785 | |
48fbe735 | 18786 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18787 | |
18788 | /* This two-pass algorithm for processing partial symbols has a | |
18789 | high cost in cache pressure. Thus, handle some simple cases | |
18790 | here which cover the majority of C partial symbols. DIEs | |
18791 | which neither have specification tags in them, nor could have | |
18792 | specification tags elsewhere pointing at them, can simply be | |
18793 | processed and discarded. | |
18794 | ||
18795 | This segment is also optional; scan_partial_symbols and | |
18796 | add_partial_symbol will handle these DIEs if we chain | |
18797 | them in normally. When compilers which do not emit large | |
18798 | quantities of duplicate debug information are more common, | |
18799 | this code can probably be removed. */ | |
18800 | ||
18801 | /* Any complete simple types at the top level (pretty much all | |
18802 | of them, for a language without namespaces), can be processed | |
18803 | directly. */ | |
18804 | if (parent_die == NULL | |
cd9983dd YQ |
18805 | && pdi.has_specification == 0 |
18806 | && pdi.is_declaration == 0 | |
18807 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18808 | || pdi.tag == DW_TAG_base_type | |
18809 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18810 | { |
7d00ffec | 18811 | if (building_psymtab && pdi.raw_name != NULL) |
f0fbb768 TT |
18812 | add_partial_symbol (&pdi, cu); |
18813 | ||
cd9983dd | 18814 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18815 | continue; |
18816 | } | |
18817 | ||
d8228535 JK |
18818 | /* The exception for DW_TAG_typedef with has_children above is |
18819 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18820 | type_name_or_error will error on such types later. |
d8228535 JK |
18821 | |
18822 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18823 | it could not find the child DIEs referenced later, this is checked | |
18824 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18825 | ||
cd9983dd | 18826 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18827 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18828 | "- DIE at %s [in module %s]"), |
cd9983dd | 18829 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18830 | |
72bf9492 DJ |
18831 | /* If we're at the second level, and we're an enumerator, and |
18832 | our parent has no specification (meaning possibly lives in a | |
18833 | namespace elsewhere), then we can add the partial symbol now | |
18834 | instead of queueing it. */ | |
cd9983dd | 18835 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18836 | && parent_die != NULL |
18837 | && parent_die->die_parent == NULL | |
18838 | && parent_die->tag == DW_TAG_enumeration_type | |
18839 | && parent_die->has_specification == 0) | |
18840 | { | |
7d00ffec | 18841 | if (pdi.raw_name == NULL) |
b98664d3 | 18842 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18843 | else if (building_psymtab) |
f0fbb768 | 18844 | add_partial_symbol (&pdi, cu); |
72bf9492 | 18845 | |
cd9983dd | 18846 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18847 | continue; |
18848 | } | |
18849 | ||
cd9983dd | 18850 | struct partial_die_info *part_die |
6f06d47b | 18851 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18852 | |
72bf9492 DJ |
18853 | /* We'll save this DIE so link it in. */ |
18854 | part_die->die_parent = parent_die; | |
18855 | part_die->die_sibling = NULL; | |
18856 | part_die->die_child = NULL; | |
18857 | ||
18858 | if (last_die && last_die == parent_die) | |
18859 | last_die->die_child = part_die; | |
18860 | else if (last_die) | |
18861 | last_die->die_sibling = part_die; | |
18862 | ||
18863 | last_die = part_die; | |
18864 | ||
18865 | if (first_die == NULL) | |
18866 | first_die = part_die; | |
18867 | ||
18868 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18869 | find interesting need to be in the hash table, because we | |
18870 | also have the parent/sibling/child chains; only those that we | |
18871 | might refer to by offset later during partial symbol reading. | |
18872 | ||
18873 | For now this means things that might have be the target of a | |
18874 | DW_AT_specification, DW_AT_abstract_origin, or | |
18875 | DW_AT_extension. DW_AT_extension will refer only to | |
18876 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18877 | many things under the function DIE, but we do not recurse | |
18878 | into function DIEs during partial symbol reading) and | |
18879 | possibly variables as well; DW_AT_specification refers to | |
18880 | declarations. Declarations ought to have the DW_AT_declaration | |
18881 | flag. It happens that GCC forgets to put it in sometimes, but | |
18882 | only for functions, not for types. | |
18883 | ||
18884 | Adding more things than necessary to the hash table is harmless | |
18885 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18886 | wasted time in find_partial_die, when we reread the compilation |
18887 | unit with load_all_dies set. */ | |
72bf9492 | 18888 | |
5afb4e99 | 18889 | if (load_all |
72929c62 | 18890 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18891 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18892 | || abbrev->tag == DW_TAG_variable |
18893 | || abbrev->tag == DW_TAG_namespace | |
18894 | || part_die->is_declaration) | |
18895 | { | |
18896 | void **slot; | |
18897 | ||
18898 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18899 | to_underlying (part_die->sect_off), |
18900 | INSERT); | |
72bf9492 DJ |
18901 | *slot = part_die; |
18902 | } | |
18903 | ||
72bf9492 | 18904 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18905 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18906 | languages we have to, so that we can get at method physnames |
18907 | to infer fully qualified class names, for DW_AT_specification, | |
18908 | and for C++ template arguments. For C++, we also look one level | |
18909 | inside functions to find template arguments (if the name of the | |
18910 | function does not already contain the template arguments). | |
bc30ff58 | 18911 | |
0a4b0913 AB |
18912 | For Ada and Fortran, we need to scan the children of subprograms |
18913 | and lexical blocks as well because these languages allow the | |
18914 | definition of nested entities that could be interesting for the | |
18915 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 18916 | if (last_die->has_children |
5afb4e99 DJ |
18917 | && (load_all |
18918 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18919 | || last_die->tag == DW_TAG_module |
72bf9492 | 18920 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18921 | || (cu->language == language_cplus |
18922 | && last_die->tag == DW_TAG_subprogram | |
7d00ffec TT |
18923 | && (last_die->raw_name == NULL |
18924 | || strchr (last_die->raw_name, '<') == NULL)) | |
72bf9492 DJ |
18925 | || (cu->language != language_c |
18926 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18927 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18928 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 18929 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
18930 | || ((cu->language == language_ada |
18931 | || cu->language == language_fortran) | |
bc30ff58 JB |
18932 | && (last_die->tag == DW_TAG_subprogram |
18933 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18934 | { |
18935 | nesting_level++; | |
18936 | parent_die = last_die; | |
18937 | continue; | |
18938 | } | |
18939 | ||
18940 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18941 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18942 | |
18943 | /* Back to the top, do it again. */ | |
18944 | } | |
18945 | } | |
18946 | ||
6f06d47b YQ |
18947 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18948 | struct abbrev_info *abbrev) | |
18949 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18950 | { | |
18951 | } | |
18952 | ||
7d00ffec TT |
18953 | /* See class definition. */ |
18954 | ||
18955 | const char * | |
18956 | partial_die_info::name (dwarf2_cu *cu) | |
18957 | { | |
18958 | if (!canonical_name && raw_name != nullptr) | |
18959 | { | |
18960 | struct objfile *objfile = cu->per_objfile->objfile; | |
18961 | raw_name = dwarf2_canonicalize_name (raw_name, cu, objfile); | |
18962 | canonical_name = 1; | |
18963 | } | |
18964 | ||
18965 | return raw_name; | |
18966 | } | |
18967 | ||
35cc7ed7 YQ |
18968 | /* Read a minimal amount of information into the minimal die structure. |
18969 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18970 | |
48fbe735 YQ |
18971 | const gdb_byte * |
18972 | partial_die_info::read (const struct die_reader_specs *reader, | |
18973 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18974 | { |
dee91e82 | 18975 | struct dwarf2_cu *cu = reader->cu; |
976ca316 | 18976 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
fa238c03 | 18977 | unsigned int i; |
c5aa993b | 18978 | int has_low_pc_attr = 0; |
c906108c | 18979 | int has_high_pc_attr = 0; |
91da1414 | 18980 | int high_pc_relative = 0; |
c906108c | 18981 | |
fd0a254f | 18982 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18983 | { |
e7da7f8f | 18984 | attribute attr; |
18a8505e | 18985 | bool need_reprocess; |
e7da7f8f | 18986 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], |
18a8505e AT |
18987 | info_ptr, &need_reprocess); |
18988 | /* String and address offsets that need to do the reprocessing have | |
18989 | already been read at this point, so there is no need to wait until | |
18990 | the loop terminates to do the reprocessing. */ | |
18991 | if (need_reprocess) | |
d0ce17d8 | 18992 | read_attribute_reprocess (reader, &attr, tag); |
c906108c | 18993 | /* Store the data if it is of an attribute we want to keep in a |
c5aa993b | 18994 | partial symbol table. */ |
c906108c SS |
18995 | switch (attr.name) |
18996 | { | |
18997 | case DW_AT_name: | |
48fbe735 | 18998 | switch (tag) |
71c25dea TT |
18999 | { |
19000 | case DW_TAG_compile_unit: | |
95554aad | 19001 | case DW_TAG_partial_unit: |
348e048f | 19002 | case DW_TAG_type_unit: |
71c25dea TT |
19003 | /* Compilation units have a DW_AT_name that is a filename, not |
19004 | a source language identifier. */ | |
19005 | case DW_TAG_enumeration_type: | |
19006 | case DW_TAG_enumerator: | |
19007 | /* These tags always have simple identifiers already; no need | |
19008 | to canonicalize them. */ | |
7d00ffec TT |
19009 | canonical_name = 1; |
19010 | raw_name = DW_STRING (&attr); | |
71c25dea TT |
19011 | break; |
19012 | default: | |
7d00ffec TT |
19013 | canonical_name = 0; |
19014 | raw_name = DW_STRING (&attr); | |
71c25dea TT |
19015 | break; |
19016 | } | |
c906108c | 19017 | break; |
31ef98ae | 19018 | case DW_AT_linkage_name: |
c906108c | 19019 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
19020 | /* Note that both forms of linkage name might appear. We |
19021 | assume they will be the same, and we only store the last | |
19022 | one we see. */ | |
e61108c9 | 19023 | linkage_name = attr.value_as_string (); |
787de330 TT |
19024 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
19025 | See https://github.com/rust-lang/rust/issues/32925. */ | |
19026 | if (cu->language == language_rust && linkage_name != NULL | |
19027 | && strchr (linkage_name, '{') != NULL) | |
19028 | linkage_name = NULL; | |
c906108c SS |
19029 | break; |
19030 | case DW_AT_low_pc: | |
19031 | has_low_pc_attr = 1; | |
cd6c91b4 | 19032 | lowpc = attr.value_as_address (); |
c906108c SS |
19033 | break; |
19034 | case DW_AT_high_pc: | |
19035 | has_high_pc_attr = 1; | |
cd6c91b4 TT |
19036 | highpc = attr.value_as_address (); |
19037 | if (cu->header.version >= 4 && attr.form_is_constant ()) | |
31aa7e4e | 19038 | high_pc_relative = 1; |
c906108c SS |
19039 | break; |
19040 | case DW_AT_location: | |
0963b4bd | 19041 | /* Support the .debug_loc offsets. */ |
4fc6c0d5 | 19042 | if (attr.form_is_block ()) |
8e19ed76 | 19043 | { |
48fbe735 | 19044 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 19045 | } |
cd6c91b4 | 19046 | else if (attr.form_is_section_offset ()) |
8e19ed76 | 19047 | { |
4d3c2250 | 19048 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
19049 | } |
19050 | else | |
19051 | { | |
4d3c2250 KB |
19052 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
19053 | "partial symbol information"); | |
8e19ed76 | 19054 | } |
c906108c | 19055 | break; |
c906108c | 19056 | case DW_AT_external: |
48fbe735 | 19057 | is_external = DW_UNSND (&attr); |
c906108c SS |
19058 | break; |
19059 | case DW_AT_declaration: | |
48fbe735 | 19060 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
19061 | break; |
19062 | case DW_AT_type: | |
48fbe735 | 19063 | has_type = 1; |
c906108c SS |
19064 | break; |
19065 | case DW_AT_abstract_origin: | |
19066 | case DW_AT_specification: | |
72bf9492 | 19067 | case DW_AT_extension: |
48fbe735 | 19068 | has_specification = 1; |
0826b30a | 19069 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 19070 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 19071 | || cu->per_cu->is_dwz); |
c906108c SS |
19072 | break; |
19073 | case DW_AT_sibling: | |
19074 | /* Ignore absolute siblings, they might point outside of | |
19075 | the current compile unit. */ | |
19076 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 19077 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 19078 | else |
b9502d3f | 19079 | { |
48fbe735 | 19080 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 19081 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 19082 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
19083 | |
19084 | if (sibling_ptr < info_ptr) | |
b98664d3 | 19085 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 19086 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 19087 | reader->die_section->overflow_complaint (); |
b9502d3f | 19088 | else |
48fbe735 | 19089 | sibling = sibling_ptr; |
b9502d3f | 19090 | } |
c906108c | 19091 | break; |
fa4028e9 | 19092 | case DW_AT_byte_size: |
48fbe735 | 19093 | has_byte_size = 1; |
fa4028e9 | 19094 | break; |
ff908ebf | 19095 | case DW_AT_const_value: |
48fbe735 | 19096 | has_const_value = 1; |
ff908ebf | 19097 | break; |
68511cec CES |
19098 | case DW_AT_calling_convention: |
19099 | /* DWARF doesn't provide a way to identify a program's source-level | |
19100 | entry point. DW_AT_calling_convention attributes are only meant | |
19101 | to describe functions' calling conventions. | |
19102 | ||
19103 | However, because it's a necessary piece of information in | |
0c1b455e TT |
19104 | Fortran, and before DWARF 4 DW_CC_program was the only |
19105 | piece of debugging information whose definition refers to | |
19106 | a 'main program' at all, several compilers marked Fortran | |
19107 | main programs with DW_CC_program --- even when those | |
19108 | functions use the standard calling conventions. | |
19109 | ||
19110 | Although DWARF now specifies a way to provide this | |
19111 | information, we support this practice for backward | |
19112 | compatibility. */ | |
68511cec | 19113 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 19114 | && cu->language == language_fortran) |
48fbe735 | 19115 | main_subprogram = 1; |
68511cec | 19116 | break; |
481860b3 GB |
19117 | case DW_AT_inline: |
19118 | if (DW_UNSND (&attr) == DW_INL_inlined | |
19119 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 19120 | may_be_inlined = 1; |
481860b3 | 19121 | break; |
95554aad TT |
19122 | |
19123 | case DW_AT_import: | |
48fbe735 | 19124 | if (tag == DW_TAG_imported_unit) |
36586728 | 19125 | { |
0826b30a | 19126 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 19127 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
19128 | || cu->per_cu->is_dwz); |
19129 | } | |
95554aad TT |
19130 | break; |
19131 | ||
0c1b455e | 19132 | case DW_AT_main_subprogram: |
48fbe735 | 19133 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
19134 | break; |
19135 | ||
05caa1d2 TT |
19136 | case DW_AT_ranges: |
19137 | { | |
d0ce17d8 CT |
19138 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO |
19139 | skeleton. We take advantage of the fact the DW_AT_ranges | |
19140 | does not appear in DW_TAG_compile_unit of DWO files. | |
19141 | ||
19142 | Attributes of the form DW_FORM_rnglistx have already had | |
19143 | their value changed by read_rnglist_index and already | |
19144 | include DW_AT_rnglists_base, so don't need to add the ranges | |
19145 | base, either. */ | |
19146 | int need_ranges_base = (tag != DW_TAG_compile_unit | |
19147 | && attr.form != DW_FORM_rnglistx); | |
05caa1d2 TT |
19148 | unsigned int ranges_offset = (DW_UNSND (&attr) |
19149 | + (need_ranges_base | |
19150 | ? cu->ranges_base | |
19151 | : 0)); | |
19152 | ||
19153 | /* Value of the DW_AT_ranges attribute is the offset in the | |
19154 | .debug_ranges section. */ | |
19155 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
d0ce17d8 | 19156 | nullptr, tag)) |
05caa1d2 TT |
19157 | has_pc_info = 1; |
19158 | } | |
19159 | break; | |
19160 | ||
c906108c SS |
19161 | default: |
19162 | break; | |
19163 | } | |
19164 | } | |
19165 | ||
10d06d82 TT |
19166 | /* For Ada, if both the name and the linkage name appear, we prefer |
19167 | the latter. This lets "catch exception" work better, regardless | |
19168 | of the order in which the name and linkage name were emitted. | |
19169 | Really, though, this is just a workaround for the fact that gdb | |
19170 | doesn't store both the name and the linkage name. */ | |
19171 | if (cu->language == language_ada && linkage_name != nullptr) | |
7d00ffec | 19172 | raw_name = linkage_name; |
10d06d82 | 19173 | |
91da1414 | 19174 | if (high_pc_relative) |
48fbe735 | 19175 | highpc += lowpc; |
91da1414 | 19176 | |
9373cf26 JK |
19177 | if (has_low_pc_attr && has_high_pc_attr) |
19178 | { | |
19179 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
19180 | eliminate duplicate copies of functions and vtables and such. | |
19181 | The linker will arbitrarily choose one and discard the others. | |
19182 | The AT_*_pc values for such functions refer to local labels in | |
19183 | these sections. If the section from that file was discarded, the | |
19184 | labels are not in the output, so the relocs get a value of 0. | |
19185 | If this is a discarded function, mark the pc bounds as invalid, | |
19186 | so that GDB will ignore it. */ | |
976ca316 | 19187 | if (lowpc == 0 && !per_objfile->per_bfd->has_section_at_zero) |
9373cf26 | 19188 | { |
976ca316 | 19189 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19190 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19191 | |
b98664d3 | 19192 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 19193 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19194 | paddress (gdbarch, lowpc), |
19195 | sect_offset_str (sect_off), | |
9d8780f0 | 19196 | objfile_name (objfile)); |
9373cf26 JK |
19197 | } |
19198 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 19199 | else if (lowpc >= highpc) |
9373cf26 | 19200 | { |
976ca316 | 19201 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19202 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19203 | |
b98664d3 | 19204 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 19205 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19206 | paddress (gdbarch, lowpc), |
19207 | paddress (gdbarch, highpc), | |
19208 | sect_offset_str (sect_off), | |
9c541725 | 19209 | objfile_name (objfile)); |
9373cf26 JK |
19210 | } |
19211 | else | |
48fbe735 | 19212 | has_pc_info = 1; |
9373cf26 | 19213 | } |
85cbf3d3 | 19214 | |
c906108c SS |
19215 | return info_ptr; |
19216 | } | |
19217 | ||
72bf9492 DJ |
19218 | /* Find a cached partial DIE at OFFSET in CU. */ |
19219 | ||
d590ff25 YQ |
19220 | struct partial_die_info * |
19221 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
19222 | { |
19223 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 19224 | struct partial_die_info part_die (sect_off); |
72bf9492 | 19225 | |
9a3c8263 | 19226 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 19227 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 19228 | to_underlying (sect_off))); |
72bf9492 | 19229 | |
72bf9492 DJ |
19230 | return lookup_die; |
19231 | } | |
19232 | ||
348e048f DE |
19233 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
19234 | except in the case of .debug_types DIEs which do not reference | |
19235 | outside their CU (they do however referencing other types via | |
55f1336d | 19236 | DW_FORM_ref_sig8). */ |
72bf9492 | 19237 | |
122cf0f2 | 19238 | static const struct cu_partial_die_info |
9c541725 | 19239 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 19240 | { |
976ca316 SM |
19241 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19242 | struct objfile *objfile = per_objfile->objfile; | |
5afb4e99 | 19243 | struct partial_die_info *pd = NULL; |
72bf9492 | 19244 | |
36586728 | 19245 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 19246 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 19247 | { |
d590ff25 | 19248 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 19249 | if (pd != NULL) |
fb816e8b | 19250 | return { cu, pd }; |
0d99eb77 DE |
19251 | /* We missed recording what we needed. |
19252 | Load all dies and try again. */ | |
5afb4e99 | 19253 | } |
0d99eb77 DE |
19254 | else |
19255 | { | |
19256 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 19257 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 19258 | { |
9d8780f0 SM |
19259 | error (_("Dwarf Error: Type Unit at offset %s contains" |
19260 | " external reference to offset %s [in module %s].\n"), | |
19261 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
19262 | bfd_get_filename (objfile->obfd)); |
19263 | } | |
7188ed02 SM |
19264 | dwarf2_per_cu_data *per_cu |
19265 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
976ca316 | 19266 | per_objfile); |
72bf9492 | 19267 | |
976ca316 | 19268 | cu = per_objfile->get_cu (per_cu); |
7188ed02 | 19269 | if (cu == NULL || cu->partial_dies == NULL) |
976ca316 | 19270 | load_partial_comp_unit (per_cu, per_objfile, nullptr); |
ae038cb0 | 19271 | |
976ca316 | 19272 | cu = per_objfile->get_cu (per_cu); |
7188ed02 SM |
19273 | |
19274 | cu->last_used = 0; | |
19275 | pd = cu->find_partial_die (sect_off); | |
0d99eb77 | 19276 | } |
5afb4e99 | 19277 | |
dee91e82 DE |
19278 | /* If we didn't find it, and not all dies have been loaded, |
19279 | load them all and try again. */ | |
19280 | ||
7188ed02 | 19281 | if (pd == NULL && cu->per_cu->load_all_dies == 0) |
5afb4e99 | 19282 | { |
7188ed02 | 19283 | cu->per_cu->load_all_dies = 1; |
fd820528 DE |
19284 | |
19285 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
19286 | THIS_CU->cu may already be in use. So we can't just free it and | |
19287 | replace its DIEs with the ones we read in. Instead, we leave those | |
19288 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
19289 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
19290 | set. */ | |
976ca316 | 19291 | load_partial_comp_unit (cu->per_cu, per_objfile, cu); |
5afb4e99 | 19292 | |
7188ed02 | 19293 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
19294 | } |
19295 | ||
19296 | if (pd == NULL) | |
521894aa | 19297 | error (_("Dwarf Error: Cannot not find DIE at %s [from module %s]\n"), |
9d8780f0 | 19298 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
7188ed02 | 19299 | return { cu, pd }; |
72bf9492 DJ |
19300 | } |
19301 | ||
abc72ce4 DE |
19302 | /* See if we can figure out if the class lives in a namespace. We do |
19303 | this by looking for a member function; its demangled name will | |
19304 | contain namespace info, if there is any. */ | |
19305 | ||
19306 | static void | |
19307 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
19308 | struct dwarf2_cu *cu) | |
19309 | { | |
19310 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
19311 | what template types look like, because the demangler | |
19312 | frequently doesn't give the same name as the debug info. We | |
19313 | could fix this by only using the demangled name to get the | |
19314 | prefix (but see comment in read_structure_type). */ | |
19315 | ||
19316 | struct partial_die_info *real_pdi; | |
19317 | struct partial_die_info *child_pdi; | |
19318 | ||
19319 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
19320 | we should not do this. We'll prepend the parent's fully qualified | |
19321 | name when we create the partial symbol. */ | |
19322 | ||
19323 | real_pdi = struct_pdi; | |
19324 | while (real_pdi->has_specification) | |
fb816e8b | 19325 | { |
122cf0f2 AB |
19326 | auto res = find_partial_die (real_pdi->spec_offset, |
19327 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
19328 | real_pdi = res.pdi; |
19329 | cu = res.cu; | |
19330 | } | |
abc72ce4 DE |
19331 | |
19332 | if (real_pdi->die_parent != NULL) | |
19333 | return; | |
19334 | ||
19335 | for (child_pdi = struct_pdi->die_child; | |
19336 | child_pdi != NULL; | |
19337 | child_pdi = child_pdi->die_sibling) | |
19338 | { | |
19339 | if (child_pdi->tag == DW_TAG_subprogram | |
19340 | && child_pdi->linkage_name != NULL) | |
19341 | { | |
43816ebc | 19342 | gdb::unique_xmalloc_ptr<char> actual_class_name |
eff93b4d AB |
19343 | (cu->language_defn->class_name_from_physname |
19344 | (child_pdi->linkage_name)); | |
abc72ce4 DE |
19345 | if (actual_class_name != NULL) |
19346 | { | |
5e22e966 | 19347 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
19348 | struct_pdi->raw_name = objfile->intern (actual_class_name.get ()); |
19349 | struct_pdi->canonical_name = 1; | |
abc72ce4 DE |
19350 | } |
19351 | break; | |
19352 | } | |
19353 | } | |
19354 | } | |
19355 | ||
25c11aca TV |
19356 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
19357 | attribute. */ | |
19358 | ||
19359 | static bool | |
19360 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
19361 | { | |
19362 | switch (tag) | |
19363 | { | |
19364 | case DW_TAG_constant: | |
19365 | case DW_TAG_enumerator: | |
19366 | case DW_TAG_formal_parameter: | |
19367 | case DW_TAG_template_value_param: | |
19368 | case DW_TAG_variable: | |
19369 | return true; | |
19370 | } | |
19371 | ||
19372 | return false; | |
19373 | } | |
19374 | ||
52356b79 YQ |
19375 | void |
19376 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 19377 | { |
abc72ce4 DE |
19378 | /* Once we've fixed up a die, there's no point in doing so again. |
19379 | This also avoids a memory leak if we were to call | |
19380 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 19381 | if (fixup_called) |
abc72ce4 DE |
19382 | return; |
19383 | ||
72bf9492 DJ |
19384 | /* If we found a reference attribute and the DIE has no name, try |
19385 | to find a name in the referred to DIE. */ | |
19386 | ||
7d00ffec | 19387 | if (raw_name == NULL && has_specification) |
72bf9492 DJ |
19388 | { |
19389 | struct partial_die_info *spec_die; | |
72bf9492 | 19390 | |
122cf0f2 | 19391 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
19392 | spec_die = res.pdi; |
19393 | cu = res.cu; | |
72bf9492 | 19394 | |
52356b79 | 19395 | spec_die->fixup (cu); |
72bf9492 | 19396 | |
7d00ffec | 19397 | if (spec_die->raw_name) |
72bf9492 | 19398 | { |
7d00ffec TT |
19399 | raw_name = spec_die->raw_name; |
19400 | canonical_name = spec_die->canonical_name; | |
72bf9492 DJ |
19401 | |
19402 | /* Copy DW_AT_external attribute if it is set. */ | |
19403 | if (spec_die->is_external) | |
52356b79 | 19404 | is_external = spec_die->is_external; |
72bf9492 DJ |
19405 | } |
19406 | } | |
19407 | ||
25c11aca TV |
19408 | if (!has_const_value && has_specification |
19409 | && can_have_DW_AT_const_value_p (tag)) | |
19410 | { | |
19411 | struct partial_die_info *spec_die; | |
19412 | ||
19413 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
19414 | spec_die = res.pdi; | |
19415 | cu = res.cu; | |
19416 | ||
19417 | spec_die->fixup (cu); | |
19418 | ||
19419 | if (spec_die->has_const_value) | |
19420 | { | |
19421 | /* Copy DW_AT_const_value attribute if it is set. */ | |
19422 | has_const_value = spec_die->has_const_value; | |
19423 | } | |
19424 | } | |
19425 | ||
72bf9492 | 19426 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 19427 | |
7d00ffec TT |
19428 | if (raw_name == NULL && tag == DW_TAG_namespace) |
19429 | { | |
19430 | raw_name = CP_ANONYMOUS_NAMESPACE_STR; | |
19431 | canonical_name = 1; | |
19432 | } | |
72bf9492 | 19433 | |
abc72ce4 DE |
19434 | /* If there is no parent die to provide a namespace, and there are |
19435 | children, see if we can determine the namespace from their linkage | |
122d1940 | 19436 | name. */ |
abc72ce4 | 19437 | if (cu->language == language_cplus |
5e22e966 | 19438 | && !cu->per_objfile->per_bfd->types.empty () |
52356b79 YQ |
19439 | && die_parent == NULL |
19440 | && has_children | |
19441 | && (tag == DW_TAG_class_type | |
19442 | || tag == DW_TAG_structure_type | |
19443 | || tag == DW_TAG_union_type)) | |
19444 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 19445 | |
53832f31 TT |
19446 | /* GCC might emit a nameless struct or union that has a linkage |
19447 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
7d00ffec | 19448 | if (raw_name == NULL |
52356b79 YQ |
19449 | && (tag == DW_TAG_class_type |
19450 | || tag == DW_TAG_interface_type | |
19451 | || tag == DW_TAG_structure_type | |
19452 | || tag == DW_TAG_union_type) | |
19453 | && linkage_name != NULL) | |
53832f31 | 19454 | { |
43816ebc TT |
19455 | gdb::unique_xmalloc_ptr<char> demangled |
19456 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
19457 | if (demangled != nullptr) | |
53832f31 | 19458 | { |
96408a79 SA |
19459 | const char *base; |
19460 | ||
19461 | /* Strip any leading namespaces/classes, keep only the base name. | |
19462 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
19463 | base = strrchr (demangled.get (), ':'); |
19464 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
19465 | base++; |
19466 | else | |
43816ebc | 19467 | base = demangled.get (); |
96408a79 | 19468 | |
5e22e966 | 19469 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
19470 | raw_name = objfile->intern (base); |
19471 | canonical_name = 1; | |
53832f31 TT |
19472 | } |
19473 | } | |
19474 | ||
52356b79 | 19475 | fixup_called = 1; |
72bf9492 DJ |
19476 | } |
19477 | ||
d0ce17d8 CT |
19478 | /* Read the .debug_loclists or .debug_rnglists header (they are the same format) |
19479 | contents from the given SECTION in the HEADER. */ | |
41144253 | 19480 | static void |
d0ce17d8 CT |
19481 | read_loclists_rnglists_header (struct loclists_rnglists_header *header, |
19482 | struct dwarf2_section_info *section) | |
41144253 | 19483 | { |
19484 | unsigned int bytes_read; | |
19485 | bfd *abfd = section->get_bfd_owner (); | |
19486 | const gdb_byte *info_ptr = section->buffer; | |
19487 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
19488 | info_ptr += bytes_read; | |
19489 | header->version = read_2_bytes (abfd, info_ptr); | |
19490 | info_ptr += 2; | |
19491 | header->addr_size = read_1_byte (abfd, info_ptr); | |
19492 | info_ptr += 1; | |
19493 | header->segment_collector_size = read_1_byte (abfd, info_ptr); | |
19494 | info_ptr += 1; | |
19495 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); | |
19496 | } | |
19497 | ||
19498 | /* Return the DW_AT_loclists_base value for the CU. */ | |
19499 | static ULONGEST | |
19500 | lookup_loclist_base (struct dwarf2_cu *cu) | |
19501 | { | |
19502 | /* For the .dwo unit, the loclist_base points to the first offset following | |
19503 | the header. The header consists of the following entities- | |
19504 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
19505 | bit format) | |
19506 | 2. version (2 bytes) | |
19507 | 3. address size (1 byte) | |
19508 | 4. segment selector size (1 byte) | |
19509 | 5. offset entry count (4 bytes) | |
19510 | These sizes are derived as per the DWARFv5 standard. */ | |
19511 | if (cu->dwo_unit != nullptr) | |
19512 | { | |
19513 | if (cu->header.initial_length_size == 4) | |
19514 | return LOCLIST_HEADER_SIZE32; | |
19515 | return LOCLIST_HEADER_SIZE64; | |
19516 | } | |
19517 | return cu->loclist_base; | |
19518 | } | |
19519 | ||
19520 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
19521 | array of offsets in the .debug_loclists section. */ | |
19522 | static CORE_ADDR | |
19523 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) | |
19524 | { | |
976ca316 SM |
19525 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19526 | struct objfile *objfile = per_objfile->objfile; | |
41144253 | 19527 | bfd *abfd = objfile->obfd; |
19528 | ULONGEST loclist_base = lookup_loclist_base (cu); | |
19529 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); | |
19530 | ||
19531 | section->read (objfile); | |
19532 | if (section->buffer == NULL) | |
19533 | complaint (_("DW_FORM_loclistx used without .debug_loclists " | |
19534 | "section [in module %s]"), objfile_name (objfile)); | |
d0ce17d8 CT |
19535 | struct loclists_rnglists_header header; |
19536 | read_loclists_rnglists_header (&header, section); | |
41144253 | 19537 | if (loclist_index >= header.offset_entry_count) |
19538 | complaint (_("DW_FORM_loclistx pointing outside of " | |
19539 | ".debug_loclists offset array [in module %s]"), | |
19540 | objfile_name (objfile)); | |
19541 | if (loclist_base + loclist_index * cu->header.offset_size | |
19542 | >= section->size) | |
19543 | complaint (_("DW_FORM_loclistx pointing outside of " | |
19544 | ".debug_loclists section [in module %s]"), | |
19545 | objfile_name (objfile)); | |
19546 | const gdb_byte *info_ptr | |
19547 | = section->buffer + loclist_base + loclist_index * cu->header.offset_size; | |
19548 | ||
19549 | if (cu->header.offset_size == 4) | |
19550 | return bfd_get_32 (abfd, info_ptr) + loclist_base; | |
19551 | else | |
19552 | return bfd_get_64 (abfd, info_ptr) + loclist_base; | |
19553 | } | |
19554 | ||
d0ce17d8 CT |
19555 | /* Given a DW_FORM_rnglistx value RNGLIST_INDEX, fetch the offset from the |
19556 | array of offsets in the .debug_rnglists section. */ | |
19557 | static CORE_ADDR | |
19558 | read_rnglist_index (struct dwarf2_cu *cu, ULONGEST rnglist_index, | |
19559 | dwarf_tag tag) | |
19560 | { | |
19561 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
19562 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19563 | bfd *abfd = objfile->obfd; | |
19564 | ULONGEST rnglist_header_size = | |
19565 | (cu->header.initial_length_size == 4 ? RNGLIST_HEADER_SIZE32 | |
19566 | : RNGLIST_HEADER_SIZE64); | |
19567 | ULONGEST rnglist_base = | |
19568 | (cu->dwo_unit != nullptr) ? rnglist_header_size : cu->ranges_base; | |
19569 | ULONGEST start_offset = | |
19570 | rnglist_base + rnglist_index * cu->header.offset_size; | |
19571 | ||
19572 | /* Get rnglists section. */ | |
19573 | struct dwarf2_section_info *section = cu_debug_rnglists_section (cu, tag); | |
19574 | ||
19575 | /* Read the rnglists section content. */ | |
19576 | section->read (objfile); | |
19577 | if (section->buffer == nullptr) | |
19578 | error (_("DW_FORM_rnglistx used without .debug_rnglists section " | |
19579 | "[in module %s]"), | |
19580 | objfile_name (objfile)); | |
19581 | ||
19582 | /* Verify the rnglist index is valid. */ | |
19583 | struct loclists_rnglists_header header; | |
19584 | read_loclists_rnglists_header (&header, section); | |
19585 | if (rnglist_index >= header.offset_entry_count) | |
19586 | error (_("DW_FORM_rnglistx index pointing outside of " | |
19587 | ".debug_rnglists offset array [in module %s]"), | |
19588 | objfile_name (objfile)); | |
19589 | ||
19590 | /* Validate that the offset is within the section's range. */ | |
19591 | if (start_offset >= section->size) | |
19592 | error (_("DW_FORM_rnglistx pointing outside of " | |
19593 | ".debug_rnglists section [in module %s]"), | |
19594 | objfile_name (objfile)); | |
19595 | ||
19596 | /* Validate that reading won't go beyond the end of the section. */ | |
19597 | if (start_offset + cu->header.offset_size > rnglist_base + section->size) | |
19598 | error (_("Reading DW_FORM_rnglistx index beyond end of" | |
19599 | ".debug_rnglists section [in module %s]"), | |
19600 | objfile_name (objfile)); | |
19601 | ||
19602 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
19603 | ||
19604 | if (cu->header.offset_size == 4) | |
19605 | return read_4_bytes (abfd, info_ptr) + rnglist_base; | |
19606 | else | |
19607 | return read_8_bytes (abfd, info_ptr) + rnglist_base; | |
19608 | } | |
19609 | ||
18a8505e AT |
19610 | /* Process the attributes that had to be skipped in the first round. These |
19611 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
19612 | They could not have been processed in the first round, because at the time | |
19613 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
19614 | static void |
19615 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 19616 | struct attribute *attr, dwarf_tag tag) |
18a8505e AT |
19617 | { |
19618 | struct dwarf2_cu *cu = reader->cu; | |
19619 | switch (attr->form) | |
19620 | { | |
19621 | case DW_FORM_addrx: | |
19622 | case DW_FORM_GNU_addr_index: | |
19623 | DW_ADDR (attr) = read_addr_index (cu, DW_UNSND (attr)); | |
19624 | break; | |
41144253 | 19625 | case DW_FORM_loclistx: |
19626 | DW_UNSND (attr) = read_loclist_index (cu, DW_UNSND (attr)); | |
19627 | break; | |
d0ce17d8 CT |
19628 | case DW_FORM_rnglistx: |
19629 | DW_UNSND (attr) = read_rnglist_index (cu, DW_UNSND (attr), tag); | |
19630 | break; | |
18a8505e AT |
19631 | case DW_FORM_strx: |
19632 | case DW_FORM_strx1: | |
19633 | case DW_FORM_strx2: | |
19634 | case DW_FORM_strx3: | |
19635 | case DW_FORM_strx4: | |
19636 | case DW_FORM_GNU_str_index: | |
19637 | { | |
19638 | unsigned int str_index = DW_UNSND (attr); | |
19639 | if (reader->dwo_file != NULL) | |
19640 | { | |
19641 | DW_STRING (attr) = read_dwo_str_index (reader, str_index); | |
19642 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19643 | } | |
19644 | else | |
19645 | { | |
19646 | DW_STRING (attr) = read_stub_str_index (cu, str_index); | |
19647 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19648 | } | |
19649 | break; | |
19650 | } | |
19651 | default: | |
19652 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
19653 | } | |
19654 | } | |
19655 | ||
a8329558 | 19656 | /* Read an attribute value described by an attribute form. */ |
c906108c | 19657 | |
d521ce57 | 19658 | static const gdb_byte * |
dee91e82 DE |
19659 | read_attribute_value (const struct die_reader_specs *reader, |
19660 | struct attribute *attr, unsigned form, | |
18a8505e AT |
19661 | LONGEST implicit_const, const gdb_byte *info_ptr, |
19662 | bool *need_reprocess) | |
c906108c | 19663 | { |
dee91e82 | 19664 | struct dwarf2_cu *cu = reader->cu; |
976ca316 SM |
19665 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19666 | struct objfile *objfile = per_objfile->objfile; | |
dee91e82 | 19667 | bfd *abfd = reader->abfd; |
e7c27a73 | 19668 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19669 | unsigned int bytes_read; |
19670 | struct dwarf_block *blk; | |
18a8505e | 19671 | *need_reprocess = false; |
c906108c | 19672 | |
aead7601 | 19673 | attr->form = (enum dwarf_form) form; |
a8329558 | 19674 | switch (form) |
c906108c | 19675 | { |
c906108c | 19676 | case DW_FORM_ref_addr: |
ae411497 | 19677 | if (cu->header.version == 2) |
c8a7a66f TT |
19678 | DW_UNSND (attr) = cu->header.read_address (abfd, info_ptr, |
19679 | &bytes_read); | |
ae411497 | 19680 | else |
8266302d TT |
19681 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, |
19682 | &bytes_read); | |
ae411497 TT |
19683 | info_ptr += bytes_read; |
19684 | break; | |
36586728 | 19685 | case DW_FORM_GNU_ref_alt: |
8266302d | 19686 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
36586728 TT |
19687 | info_ptr += bytes_read; |
19688 | break; | |
ae411497 | 19689 | case DW_FORM_addr: |
08feed99 TT |
19690 | { |
19691 | struct gdbarch *gdbarch = objfile->arch (); | |
19692 | DW_ADDR (attr) = cu->header.read_address (abfd, info_ptr, &bytes_read); | |
19693 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); | |
19694 | info_ptr += bytes_read; | |
19695 | } | |
c906108c SS |
19696 | break; |
19697 | case DW_FORM_block2: | |
7b5a2f43 | 19698 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19699 | blk->size = read_2_bytes (abfd, info_ptr); |
19700 | info_ptr += 2; | |
19701 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19702 | info_ptr += blk->size; | |
19703 | DW_BLOCK (attr) = blk; | |
19704 | break; | |
19705 | case DW_FORM_block4: | |
7b5a2f43 | 19706 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19707 | blk->size = read_4_bytes (abfd, info_ptr); |
19708 | info_ptr += 4; | |
19709 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19710 | info_ptr += blk->size; | |
19711 | DW_BLOCK (attr) = blk; | |
19712 | break; | |
19713 | case DW_FORM_data2: | |
19714 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
19715 | info_ptr += 2; | |
19716 | break; | |
19717 | case DW_FORM_data4: | |
19718 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
19719 | info_ptr += 4; | |
19720 | break; | |
19721 | case DW_FORM_data8: | |
19722 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
19723 | info_ptr += 8; | |
19724 | break; | |
0224619f JK |
19725 | case DW_FORM_data16: |
19726 | blk = dwarf_alloc_block (cu); | |
19727 | blk->size = 16; | |
19728 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19729 | info_ptr += 16; | |
19730 | DW_BLOCK (attr) = blk; | |
19731 | break; | |
2dc7f7b3 | 19732 | case DW_FORM_sec_offset: |
8266302d | 19733 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
2dc7f7b3 TT |
19734 | info_ptr += bytes_read; |
19735 | break; | |
41144253 | 19736 | case DW_FORM_loclistx: |
19737 | { | |
19738 | *need_reprocess = true; | |
19739 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19740 | info_ptr += bytes_read; | |
19741 | } | |
19742 | break; | |
c906108c | 19743 | case DW_FORM_string: |
9b1c24c8 | 19744 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 19745 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
19746 | info_ptr += bytes_read; |
19747 | break; | |
4bdf3d34 | 19748 | case DW_FORM_strp: |
36586728 TT |
19749 | if (!cu->per_cu->is_dwz) |
19750 | { | |
976ca316 | 19751 | DW_STRING (attr) = read_indirect_string (per_objfile, |
ed2dc618 | 19752 | abfd, info_ptr, cu_header, |
36586728 TT |
19753 | &bytes_read); |
19754 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19755 | info_ptr += bytes_read; | |
19756 | break; | |
19757 | } | |
19758 | /* FALLTHROUGH */ | |
43988095 JK |
19759 | case DW_FORM_line_strp: |
19760 | if (!cu->per_cu->is_dwz) | |
19761 | { | |
976ca316 SM |
19762 | DW_STRING (attr) = per_objfile->read_line_string (info_ptr, cu_header, |
19763 | &bytes_read); | |
43988095 JK |
19764 | DW_STRING_IS_CANONICAL (attr) = 0; |
19765 | info_ptr += bytes_read; | |
19766 | break; | |
19767 | } | |
19768 | /* FALLTHROUGH */ | |
36586728 TT |
19769 | case DW_FORM_GNU_strp_alt: |
19770 | { | |
976ca316 | 19771 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
8266302d TT |
19772 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
19773 | &bytes_read); | |
36586728 | 19774 | |
0314b390 | 19775 | DW_STRING (attr) = dwz->read_string (objfile, str_offset); |
36586728 TT |
19776 | DW_STRING_IS_CANONICAL (attr) = 0; |
19777 | info_ptr += bytes_read; | |
19778 | } | |
4bdf3d34 | 19779 | break; |
2dc7f7b3 | 19780 | case DW_FORM_exprloc: |
c906108c | 19781 | case DW_FORM_block: |
7b5a2f43 | 19782 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19783 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19784 | info_ptr += bytes_read; | |
19785 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19786 | info_ptr += blk->size; | |
19787 | DW_BLOCK (attr) = blk; | |
19788 | break; | |
19789 | case DW_FORM_block1: | |
7b5a2f43 | 19790 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19791 | blk->size = read_1_byte (abfd, info_ptr); |
19792 | info_ptr += 1; | |
19793 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19794 | info_ptr += blk->size; | |
19795 | DW_BLOCK (attr) = blk; | |
19796 | break; | |
19797 | case DW_FORM_data1: | |
19798 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19799 | info_ptr += 1; | |
19800 | break; | |
19801 | case DW_FORM_flag: | |
19802 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19803 | info_ptr += 1; | |
19804 | break; | |
2dc7f7b3 TT |
19805 | case DW_FORM_flag_present: |
19806 | DW_UNSND (attr) = 1; | |
19807 | break; | |
c906108c SS |
19808 | case DW_FORM_sdata: |
19809 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19810 | info_ptr += bytes_read; | |
19811 | break; | |
18a8505e | 19812 | case DW_FORM_rnglistx: |
d0ce17d8 CT |
19813 | *need_reprocess = true; |
19814 | /* FALLTHROUGH */ | |
19815 | case DW_FORM_udata: | |
c906108c SS |
19816 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19817 | info_ptr += bytes_read; | |
19818 | break; | |
19819 | case DW_FORM_ref1: | |
9c541725 | 19820 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19821 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19822 | info_ptr += 1; |
19823 | break; | |
19824 | case DW_FORM_ref2: | |
9c541725 | 19825 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19826 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19827 | info_ptr += 2; |
19828 | break; | |
19829 | case DW_FORM_ref4: | |
9c541725 | 19830 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19831 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19832 | info_ptr += 4; |
19833 | break; | |
613e1657 | 19834 | case DW_FORM_ref8: |
9c541725 | 19835 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19836 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19837 | info_ptr += 8; |
19838 | break; | |
55f1336d | 19839 | case DW_FORM_ref_sig8: |
ac9ec31b | 19840 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19841 | info_ptr += 8; |
19842 | break; | |
c906108c | 19843 | case DW_FORM_ref_udata: |
9c541725 | 19844 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19845 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19846 | info_ptr += bytes_read; |
19847 | break; | |
c906108c | 19848 | case DW_FORM_indirect: |
a8329558 KW |
19849 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19850 | info_ptr += bytes_read; | |
43988095 JK |
19851 | if (form == DW_FORM_implicit_const) |
19852 | { | |
19853 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19854 | info_ptr += bytes_read; | |
19855 | } | |
19856 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
18a8505e | 19857 | info_ptr, need_reprocess); |
43988095 JK |
19858 | break; |
19859 | case DW_FORM_implicit_const: | |
19860 | DW_SND (attr) = implicit_const; | |
a8329558 | 19861 | break; |
336d760d | 19862 | case DW_FORM_addrx: |
3019eac3 | 19863 | case DW_FORM_GNU_addr_index: |
18a8505e AT |
19864 | *need_reprocess = true; |
19865 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3019eac3 DE |
19866 | info_ptr += bytes_read; |
19867 | break; | |
cf532bd1 | 19868 | case DW_FORM_strx: |
15f18d14 AT |
19869 | case DW_FORM_strx1: |
19870 | case DW_FORM_strx2: | |
19871 | case DW_FORM_strx3: | |
19872 | case DW_FORM_strx4: | |
3019eac3 | 19873 | case DW_FORM_GNU_str_index: |
3019eac3 | 19874 | { |
15f18d14 AT |
19875 | ULONGEST str_index; |
19876 | if (form == DW_FORM_strx1) | |
19877 | { | |
19878 | str_index = read_1_byte (abfd, info_ptr); | |
19879 | info_ptr += 1; | |
19880 | } | |
19881 | else if (form == DW_FORM_strx2) | |
19882 | { | |
19883 | str_index = read_2_bytes (abfd, info_ptr); | |
19884 | info_ptr += 2; | |
19885 | } | |
19886 | else if (form == DW_FORM_strx3) | |
19887 | { | |
19888 | str_index = read_3_bytes (abfd, info_ptr); | |
19889 | info_ptr += 3; | |
19890 | } | |
19891 | else if (form == DW_FORM_strx4) | |
19892 | { | |
19893 | str_index = read_4_bytes (abfd, info_ptr); | |
19894 | info_ptr += 4; | |
19895 | } | |
19896 | else | |
19897 | { | |
19898 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19899 | info_ptr += bytes_read; | |
19900 | } | |
18a8505e AT |
19901 | *need_reprocess = true; |
19902 | DW_UNSND (attr) = str_index; | |
19903 | } | |
3019eac3 | 19904 | break; |
c906108c | 19905 | default: |
8a3fe4f8 | 19906 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19907 | dwarf_form_name (form), |
19908 | bfd_get_filename (abfd)); | |
c906108c | 19909 | } |
28e94949 | 19910 | |
36586728 | 19911 | /* Super hack. */ |
cd6c91b4 | 19912 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
19913 | attr->form = DW_FORM_GNU_ref_alt; |
19914 | ||
28e94949 JB |
19915 | /* We have seen instances where the compiler tried to emit a byte |
19916 | size attribute of -1 which ended up being encoded as an unsigned | |
19917 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19918 | an object of this size seems pretty unlikely so we can relatively | |
19919 | safely treat these cases as if the size attribute was invalid and | |
19920 | treat them as zero by default. */ | |
19921 | if (attr->name == DW_AT_byte_size | |
19922 | && form == DW_FORM_data4 | |
19923 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19924 | { |
19925 | complaint | |
b98664d3 | 19926 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19927 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19928 | DW_UNSND (attr) = 0; |
19929 | } | |
28e94949 | 19930 | |
c906108c SS |
19931 | return info_ptr; |
19932 | } | |
19933 | ||
a8329558 KW |
19934 | /* Read an attribute described by an abbreviated attribute. */ |
19935 | ||
d521ce57 | 19936 | static const gdb_byte * |
dee91e82 DE |
19937 | read_attribute (const struct die_reader_specs *reader, |
19938 | struct attribute *attr, struct attr_abbrev *abbrev, | |
18a8505e | 19939 | const gdb_byte *info_ptr, bool *need_reprocess) |
a8329558 KW |
19940 | { |
19941 | attr->name = abbrev->name; | |
43988095 | 19942 | return read_attribute_value (reader, attr, abbrev->form, |
18a8505e AT |
19943 | abbrev->implicit_const, info_ptr, |
19944 | need_reprocess); | |
a8329558 KW |
19945 | } |
19946 | ||
43988095 JK |
19947 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
19948 | ||
19949 | static const char * | |
976ca316 | 19950 | read_indirect_string_at_offset (dwarf2_per_objfile *per_objfile, |
4f44ae6c | 19951 | LONGEST str_offset) |
43988095 | 19952 | { |
976ca316 SM |
19953 | return per_objfile->per_bfd->str.read_string (per_objfile->objfile, |
19954 | str_offset, "DW_FORM_strp"); | |
c906108c SS |
19955 | } |
19956 | ||
43988095 JK |
19957 | /* Return pointer to string at .debug_str offset as read from BUF. |
19958 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19959 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19960 | ||
d521ce57 | 19961 | static const char * |
976ca316 | 19962 | read_indirect_string (dwarf2_per_objfile *per_objfile, bfd *abfd, |
ed2dc618 | 19963 | const gdb_byte *buf, |
cf2c3c16 TT |
19964 | const struct comp_unit_head *cu_header, |
19965 | unsigned int *bytes_read_ptr) | |
19966 | { | |
8266302d | 19967 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 19968 | |
976ca316 | 19969 | return read_indirect_string_at_offset (per_objfile, str_offset); |
cf2c3c16 TT |
19970 | } |
19971 | ||
86c0bb4c | 19972 | /* See read.h. */ |
43988095 | 19973 | |
86c0bb4c TT |
19974 | const char * |
19975 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
5989a64e SM |
19976 | const struct comp_unit_head *cu_header, |
19977 | unsigned int *bytes_read_ptr) | |
43988095 | 19978 | { |
86c0bb4c | 19979 | bfd *abfd = objfile->obfd; |
8266302d | 19980 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 19981 | |
5989a64e | 19982 | return per_bfd->line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
19983 | } |
19984 | ||
3019eac3 | 19985 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 19986 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
19987 | ADDR_SIZE is the size of addresses from the CU header. */ |
19988 | ||
19989 | static CORE_ADDR | |
976ca316 SM |
19990 | read_addr_index_1 (dwarf2_per_objfile *per_objfile, unsigned int addr_index, |
19991 | gdb::optional<ULONGEST> addr_base, int addr_size) | |
3019eac3 | 19992 | { |
976ca316 | 19993 | struct objfile *objfile = per_objfile->objfile; |
3019eac3 DE |
19994 | bfd *abfd = objfile->obfd; |
19995 | const gdb_byte *info_ptr; | |
18a8505e | 19996 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 19997 | |
976ca316 SM |
19998 | per_objfile->per_bfd->addr.read (objfile); |
19999 | if (per_objfile->per_bfd->addr.buffer == NULL) | |
3019eac3 | 20000 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), |
4262abfb | 20001 | objfile_name (objfile)); |
18a8505e | 20002 | if (addr_base_or_zero + addr_index * addr_size |
976ca316 | 20003 | >= per_objfile->per_bfd->addr.size) |
3019eac3 DE |
20004 | error (_("DW_FORM_addr_index pointing outside of " |
20005 | ".debug_addr section [in module %s]"), | |
4262abfb | 20006 | objfile_name (objfile)); |
976ca316 SM |
20007 | info_ptr = (per_objfile->per_bfd->addr.buffer + addr_base_or_zero |
20008 | + addr_index * addr_size); | |
3019eac3 DE |
20009 | if (addr_size == 4) |
20010 | return bfd_get_32 (abfd, info_ptr); | |
20011 | else | |
20012 | return bfd_get_64 (abfd, info_ptr); | |
20013 | } | |
20014 | ||
20015 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
20016 | ||
20017 | static CORE_ADDR | |
20018 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
20019 | { | |
5e22e966 | 20020 | return read_addr_index_1 (cu->per_objfile, addr_index, |
518817b3 | 20021 | cu->addr_base, cu->header.addr_size); |
3019eac3 DE |
20022 | } |
20023 | ||
20024 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
20025 | ||
20026 | static CORE_ADDR | |
d521ce57 | 20027 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
20028 | unsigned int *bytes_read) |
20029 | { | |
5e22e966 | 20030 | bfd *abfd = cu->per_objfile->objfile->obfd; |
3019eac3 DE |
20031 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
20032 | ||
20033 | return read_addr_index (cu, addr_index); | |
20034 | } | |
20035 | ||
450a1bfc | 20036 | /* See read.h. */ |
3019eac3 DE |
20037 | |
20038 | CORE_ADDR | |
82ca3f51 | 20039 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, |
976ca316 | 20040 | dwarf2_per_objfile *per_objfile, |
82ca3f51 | 20041 | unsigned int addr_index) |
3019eac3 | 20042 | { |
976ca316 | 20043 | struct dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
18a8505e | 20044 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
20045 | int addr_size; |
20046 | ||
3019eac3 DE |
20047 | /* We need addr_base and addr_size. |
20048 | If we don't have PER_CU->cu, we have to get it. | |
20049 | Nasty, but the alternative is storing the needed info in PER_CU, | |
20050 | which at this point doesn't seem justified: it's not clear how frequently | |
20051 | it would get used and it would increase the size of every PER_CU. | |
20052 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
20053 | so we're not in uncharted territory here. | |
20054 | Alas we need to be a bit more complicated as addr_base is contained | |
20055 | in the DIE. | |
20056 | ||
20057 | We don't need to read the entire CU(/TU). | |
20058 | We just need the header and top level die. | |
a1b64ce1 | 20059 | |
3019eac3 | 20060 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 20061 | For now we skip this optimization. */ |
3019eac3 DE |
20062 | |
20063 | if (cu != NULL) | |
20064 | { | |
20065 | addr_base = cu->addr_base; | |
20066 | addr_size = cu->header.addr_size; | |
20067 | } | |
20068 | else | |
20069 | { | |
976ca316 | 20070 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
20071 | addr_base = reader.cu->addr_base; |
20072 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
20073 | } |
20074 | ||
976ca316 | 20075 | return read_addr_index_1 (per_objfile, addr_index, addr_base, addr_size); |
3019eac3 DE |
20076 | } |
20077 | ||
18a8505e AT |
20078 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
20079 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
20080 | DWO file. */ | |
3019eac3 | 20081 | |
d521ce57 | 20082 | static const char * |
18a8505e AT |
20083 | read_str_index (struct dwarf2_cu *cu, |
20084 | struct dwarf2_section_info *str_section, | |
20085 | struct dwarf2_section_info *str_offsets_section, | |
20086 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 20087 | { |
976ca316 SM |
20088 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20089 | struct objfile *objfile = per_objfile->objfile; | |
c5164cbc | 20090 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 20091 | bfd *abfd = objfile->obfd; |
d521ce57 | 20092 | const gdb_byte *info_ptr; |
3019eac3 | 20093 | ULONGEST str_offset; |
cf532bd1 | 20094 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 20095 | |
96b79293 TT |
20096 | str_section->read (objfile); |
20097 | str_offsets_section->read (objfile); | |
73869dc2 | 20098 | if (str_section->buffer == NULL) |
18a8505e | 20099 | error (_("%s used without %s section" |
9d8780f0 | 20100 | " in CU at offset %s [in module %s]"), |
96b79293 | 20101 | form_name, str_section->get_name (), |
18a8505e | 20102 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20103 | if (str_offsets_section->buffer == NULL) |
18a8505e | 20104 | error (_("%s used without %s section" |
9d8780f0 | 20105 | " in CU at offset %s [in module %s]"), |
96b79293 | 20106 | form_name, str_section->get_name (), |
18a8505e | 20107 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20108 | info_ptr = (str_offsets_section->buffer |
18a8505e | 20109 | + str_offsets_base |
3019eac3 DE |
20110 | + str_index * cu->header.offset_size); |
20111 | if (cu->header.offset_size == 4) | |
20112 | str_offset = bfd_get_32 (abfd, info_ptr); | |
20113 | else | |
20114 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 20115 | if (str_offset >= str_section->size) |
57d63ce2 | 20116 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
20117 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
20118 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20119 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
20120 | } |
20121 | ||
18a8505e AT |
20122 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
20123 | ||
20124 | static const char * | |
20125 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
20126 | { | |
20127 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
20128 | ? reader->cu->header.addr_size : 0; | |
20129 | return read_str_index (reader->cu, | |
20130 | &reader->dwo_file->sections.str, | |
20131 | &reader->dwo_file->sections.str_offsets, | |
20132 | str_offsets_base, str_index); | |
20133 | } | |
20134 | ||
20135 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
20136 | ||
20137 | static const char * | |
20138 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
20139 | { | |
5e22e966 | 20140 | struct objfile *objfile = cu->per_objfile->objfile; |
18a8505e AT |
20141 | const char *objf_name = objfile_name (objfile); |
20142 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
20143 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
20144 | ||
20145 | if (!cu->str_offsets_base.has_value ()) | |
20146 | error (_("%s used in Fission stub without %s" | |
20147 | " in CU at offset 0x%lx [in module %s]"), | |
20148 | form_name, str_offsets_attr_name, | |
20149 | (long) cu->header.offset_size, objf_name); | |
20150 | ||
20151 | return read_str_index (cu, | |
5e22e966 SM |
20152 | &cu->per_objfile->per_bfd->str, |
20153 | &cu->per_objfile->per_bfd->str_offsets, | |
18a8505e AT |
20154 | *cu->str_offsets_base, str_index); |
20155 | } | |
20156 | ||
3019eac3 DE |
20157 | /* Return the length of an LEB128 number in BUF. */ |
20158 | ||
20159 | static int | |
20160 | leb128_size (const gdb_byte *buf) | |
20161 | { | |
20162 | const gdb_byte *begin = buf; | |
20163 | gdb_byte byte; | |
20164 | ||
20165 | while (1) | |
20166 | { | |
20167 | byte = *buf++; | |
20168 | if ((byte & 128) == 0) | |
20169 | return buf - begin; | |
20170 | } | |
20171 | } | |
20172 | ||
c906108c | 20173 | static void |
e142c38c | 20174 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
20175 | { |
20176 | switch (lang) | |
20177 | { | |
20178 | case DW_LANG_C89: | |
76bee0cc | 20179 | case DW_LANG_C99: |
0cfd832f | 20180 | case DW_LANG_C11: |
c906108c | 20181 | case DW_LANG_C: |
d1be3247 | 20182 | case DW_LANG_UPC: |
e142c38c | 20183 | cu->language = language_c; |
c906108c | 20184 | break; |
9c37b5ae | 20185 | case DW_LANG_Java: |
c906108c | 20186 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
20187 | case DW_LANG_C_plus_plus_11: |
20188 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 20189 | cu->language = language_cplus; |
c906108c | 20190 | break; |
6aecb9c2 JB |
20191 | case DW_LANG_D: |
20192 | cu->language = language_d; | |
20193 | break; | |
c906108c SS |
20194 | case DW_LANG_Fortran77: |
20195 | case DW_LANG_Fortran90: | |
b21b22e0 | 20196 | case DW_LANG_Fortran95: |
f7de9aab MW |
20197 | case DW_LANG_Fortran03: |
20198 | case DW_LANG_Fortran08: | |
e142c38c | 20199 | cu->language = language_fortran; |
c906108c | 20200 | break; |
a766d390 DE |
20201 | case DW_LANG_Go: |
20202 | cu->language = language_go; | |
20203 | break; | |
c906108c | 20204 | case DW_LANG_Mips_Assembler: |
e142c38c | 20205 | cu->language = language_asm; |
c906108c SS |
20206 | break; |
20207 | case DW_LANG_Ada83: | |
8aaf0b47 | 20208 | case DW_LANG_Ada95: |
bc5f45f8 JB |
20209 | cu->language = language_ada; |
20210 | break; | |
72019c9c GM |
20211 | case DW_LANG_Modula2: |
20212 | cu->language = language_m2; | |
20213 | break; | |
fe8e67fd PM |
20214 | case DW_LANG_Pascal83: |
20215 | cu->language = language_pascal; | |
20216 | break; | |
22566fbd DJ |
20217 | case DW_LANG_ObjC: |
20218 | cu->language = language_objc; | |
20219 | break; | |
c44af4eb TT |
20220 | case DW_LANG_Rust: |
20221 | case DW_LANG_Rust_old: | |
20222 | cu->language = language_rust; | |
20223 | break; | |
c906108c SS |
20224 | case DW_LANG_Cobol74: |
20225 | case DW_LANG_Cobol85: | |
c906108c | 20226 | default: |
e142c38c | 20227 | cu->language = language_minimal; |
c906108c SS |
20228 | break; |
20229 | } | |
e142c38c | 20230 | cu->language_defn = language_def (cu->language); |
c906108c SS |
20231 | } |
20232 | ||
20233 | /* Return the named attribute or NULL if not there. */ | |
20234 | ||
20235 | static struct attribute * | |
e142c38c | 20236 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 20237 | { |
a48e046c | 20238 | for (;;) |
c906108c | 20239 | { |
a48e046c TT |
20240 | unsigned int i; |
20241 | struct attribute *spec = NULL; | |
20242 | ||
20243 | for (i = 0; i < die->num_attrs; ++i) | |
20244 | { | |
20245 | if (die->attrs[i].name == name) | |
20246 | return &die->attrs[i]; | |
20247 | if (die->attrs[i].name == DW_AT_specification | |
20248 | || die->attrs[i].name == DW_AT_abstract_origin) | |
20249 | spec = &die->attrs[i]; | |
20250 | } | |
20251 | ||
20252 | if (!spec) | |
20253 | break; | |
c906108c | 20254 | |
f2f0e013 | 20255 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 20256 | } |
c5aa993b | 20257 | |
c906108c SS |
20258 | return NULL; |
20259 | } | |
20260 | ||
7d45c7c3 KB |
20261 | /* Return the string associated with a string-typed attribute, or NULL if it |
20262 | is either not found or is of an incorrect type. */ | |
20263 | ||
20264 | static const char * | |
20265 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
20266 | { | |
20267 | struct attribute *attr; | |
20268 | const char *str = NULL; | |
20269 | ||
20270 | attr = dwarf2_attr (die, name, cu); | |
20271 | ||
20272 | if (attr != NULL) | |
20273 | { | |
e61108c9 TT |
20274 | str = attr->value_as_string (); |
20275 | if (str == nullptr) | |
b98664d3 | 20276 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
20277 | "DIE at %s in module %s"), |
20278 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
5e22e966 | 20279 | objfile_name (cu->per_objfile->objfile)); |
7d45c7c3 KB |
20280 | } |
20281 | ||
20282 | return str; | |
20283 | } | |
20284 | ||
a084a2a6 | 20285 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 20286 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
20287 | static const char * |
20288 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
20289 | { | |
20290 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
20291 | if (dwo_name == nullptr) | |
20292 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
20293 | return dwo_name; | |
20294 | } | |
20295 | ||
05cf31d1 JB |
20296 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
20297 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 20298 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
20299 | |
20300 | static int | |
20301 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
20302 | { | |
20303 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
20304 | ||
20305 | return (attr && DW_UNSND (attr)); | |
20306 | } | |
20307 | ||
3ca72b44 | 20308 | static int |
e142c38c | 20309 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 20310 | { |
05cf31d1 JB |
20311 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
20312 | which value is non-zero. However, we have to be careful with | |
20313 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
20314 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
20315 | end up accidently finding a declaration attribute that belongs | |
20316 | to a different DIE referenced by the specification attribute, | |
20317 | even though the given DIE does not have a declaration attribute. */ | |
20318 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
20319 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
20320 | } |
20321 | ||
63d06c5c | 20322 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 20323 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
20324 | containing the return value on output. If there is no |
20325 | specification, but there is an abstract origin, that is | |
20326 | returned. */ | |
63d06c5c DC |
20327 | |
20328 | static struct die_info * | |
f2f0e013 | 20329 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 20330 | { |
f2f0e013 DJ |
20331 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
20332 | *spec_cu); | |
63d06c5c | 20333 | |
edb3359d DJ |
20334 | if (spec_attr == NULL) |
20335 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
20336 | ||
63d06c5c DC |
20337 | if (spec_attr == NULL) |
20338 | return NULL; | |
20339 | else | |
f2f0e013 | 20340 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 20341 | } |
c906108c | 20342 | |
527f3840 JK |
20343 | /* Stub for free_line_header to match void * callback types. */ |
20344 | ||
20345 | static void | |
20346 | free_line_header_voidp (void *arg) | |
20347 | { | |
9a3c8263 | 20348 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 20349 | |
fff8551c | 20350 | delete lh; |
527f3840 JK |
20351 | } |
20352 | ||
83769d0b | 20353 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
20354 | |
20355 | static struct dwarf2_section_info * | |
20356 | get_debug_line_section (struct dwarf2_cu *cu) | |
20357 | { | |
20358 | struct dwarf2_section_info *section; | |
976ca316 | 20359 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
36586728 TT |
20360 | |
20361 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
20362 | DWO file. */ | |
20363 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
20364 | section = &cu->dwo_unit->dwo_file->sections.line; | |
20365 | else if (cu->per_cu->is_dwz) | |
20366 | { | |
976ca316 | 20367 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
36586728 TT |
20368 | |
20369 | section = &dwz->line; | |
20370 | } | |
20371 | else | |
976ca316 | 20372 | section = &per_objfile->per_bfd->line; |
36586728 TT |
20373 | |
20374 | return section; | |
20375 | } | |
20376 | ||
debd256d | 20377 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20378 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20379 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20380 | Returns NULL if there is a problem reading the header, e.g., if it |
20381 | has a version we don't understand. | |
debd256d JB |
20382 | |
20383 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20384 | the returned object point into the dwarf line section buffer, |
20385 | and must not be freed. */ | |
ae2de4f8 | 20386 | |
fff8551c | 20387 | static line_header_up |
9c541725 | 20388 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20389 | { |
3019eac3 | 20390 | struct dwarf2_section_info *section; |
976ca316 | 20391 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 20392 | |
36586728 | 20393 | section = get_debug_line_section (cu); |
976ca316 | 20394 | section->read (per_objfile->objfile); |
3019eac3 | 20395 | if (section->buffer == NULL) |
debd256d | 20396 | { |
3019eac3 | 20397 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 20398 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 20399 | else |
b98664d3 | 20400 | complaint (_("missing .debug_line section")); |
debd256d JB |
20401 | return 0; |
20402 | } | |
20403 | ||
0df7ad3a | 20404 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
976ca316 | 20405 | per_objfile, section, &cu->header); |
debd256d | 20406 | } |
c906108c | 20407 | |
c6da4cef | 20408 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 20409 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 20410 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
20411 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20412 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20413 | |
d521ce57 | 20414 | static const char * |
7ba99d21 | 20415 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 20416 | const dwarf2_psymtab *pst, |
c89b44cd TT |
20417 | const char *comp_dir, |
20418 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20419 | { |
d521ce57 TT |
20420 | const char *include_name = fe.name; |
20421 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20422 | const char *pst_filename; |
c6da4cef DE |
20423 | int file_is_pst; |
20424 | ||
8c43009f | 20425 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20426 | |
c89b44cd | 20427 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20428 | if (!IS_ABSOLUTE_PATH (include_name) |
20429 | && (dir_name != NULL || comp_dir != NULL)) | |
20430 | { | |
20431 | /* Avoid creating a duplicate psymtab for PST. | |
20432 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20433 | Before we do the comparison, however, we need to account | |
20434 | for DIR_NAME and COMP_DIR. | |
20435 | First prepend dir_name (if non-NULL). If we still don't | |
20436 | have an absolute path prepend comp_dir (if non-NULL). | |
20437 | However, the directory we record in the include-file's | |
20438 | psymtab does not contain COMP_DIR (to match the | |
20439 | corresponding symtab(s)). | |
20440 | ||
20441 | Example: | |
20442 | ||
20443 | bash$ cd /tmp | |
20444 | bash$ gcc -g ./hello.c | |
20445 | include_name = "hello.c" | |
20446 | dir_name = "." | |
20447 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20448 | DW_AT_name = "./hello.c" |
20449 | ||
20450 | */ | |
c6da4cef DE |
20451 | |
20452 | if (dir_name != NULL) | |
20453 | { | |
c89b44cd TT |
20454 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20455 | include_name, (char *) NULL)); | |
20456 | include_name = name_holder->get (); | |
c6da4cef | 20457 | include_name_to_compare = include_name; |
c6da4cef DE |
20458 | } |
20459 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20460 | { | |
c89b44cd TT |
20461 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20462 | include_name, (char *) NULL)); | |
20463 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20464 | } |
20465 | } | |
20466 | ||
20467 | pst_filename = pst->filename; | |
c89b44cd | 20468 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20469 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20470 | { | |
c89b44cd TT |
20471 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20472 | pst_filename, (char *) NULL)); | |
20473 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20474 | } |
20475 | ||
1e3fad37 | 20476 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20477 | |
c6da4cef DE |
20478 | if (file_is_pst) |
20479 | return NULL; | |
20480 | return include_name; | |
20481 | } | |
20482 | ||
d9b3de22 DE |
20483 | /* State machine to track the state of the line number program. */ |
20484 | ||
6f77053d | 20485 | class lnp_state_machine |
d9b3de22 | 20486 | { |
6f77053d PA |
20487 | public: |
20488 | /* Initialize a machine state for the start of a line number | |
20489 | program. */ | |
804d2729 TT |
20490 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
20491 | bool record_lines_p); | |
6f77053d | 20492 | |
8c43009f PA |
20493 | file_entry *current_file () |
20494 | { | |
20495 | /* lh->file_names is 0-based, but the file name numbers in the | |
20496 | statement program are 1-based. */ | |
6f77053d PA |
20497 | return m_line_header->file_name_at (m_file); |
20498 | } | |
20499 | ||
20500 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20501 | we're processing the end of a sequence. */ | |
20502 | void record_line (bool end_sequence); | |
20503 | ||
a8caed5d | 20504 | /* Check ADDRESS is -1, or zero and less than UNRELOCATED_LOWPC, and if true |
7ab6656f | 20505 | nop-out rest of the lines in this sequence. */ |
6f77053d PA |
20506 | void check_line_address (struct dwarf2_cu *cu, |
20507 | const gdb_byte *line_ptr, | |
7ab6656f | 20508 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
20509 | |
20510 | void handle_set_discriminator (unsigned int discriminator) | |
20511 | { | |
20512 | m_discriminator = discriminator; | |
20513 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20514 | } | |
20515 | ||
20516 | /* Handle DW_LNE_set_address. */ | |
20517 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20518 | { | |
20519 | m_op_index = 0; | |
20520 | address += baseaddr; | |
20521 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20522 | } | |
20523 | ||
20524 | /* Handle DW_LNS_advance_pc. */ | |
20525 | void handle_advance_pc (CORE_ADDR adjust); | |
20526 | ||
20527 | /* Handle a special opcode. */ | |
20528 | void handle_special_opcode (unsigned char op_code); | |
20529 | ||
20530 | /* Handle DW_LNS_advance_line. */ | |
20531 | void handle_advance_line (int line_delta) | |
20532 | { | |
20533 | advance_line (line_delta); | |
20534 | } | |
20535 | ||
20536 | /* Handle DW_LNS_set_file. */ | |
20537 | void handle_set_file (file_name_index file); | |
20538 | ||
20539 | /* Handle DW_LNS_negate_stmt. */ | |
20540 | void handle_negate_stmt () | |
20541 | { | |
20542 | m_is_stmt = !m_is_stmt; | |
20543 | } | |
20544 | ||
20545 | /* Handle DW_LNS_const_add_pc. */ | |
20546 | void handle_const_add_pc (); | |
20547 | ||
20548 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20549 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20550 | { | |
20551 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20552 | m_op_index = 0; | |
20553 | } | |
20554 | ||
20555 | /* Handle DW_LNS_copy. */ | |
20556 | void handle_copy () | |
20557 | { | |
20558 | record_line (false); | |
20559 | m_discriminator = 0; | |
20560 | } | |
20561 | ||
20562 | /* Handle DW_LNE_end_sequence. */ | |
20563 | void handle_end_sequence () | |
20564 | { | |
804d2729 | 20565 | m_currently_recording_lines = true; |
6f77053d PA |
20566 | } |
20567 | ||
20568 | private: | |
20569 | /* Advance the line by LINE_DELTA. */ | |
20570 | void advance_line (int line_delta) | |
20571 | { | |
20572 | m_line += line_delta; | |
20573 | ||
20574 | if (line_delta != 0) | |
20575 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20576 | } |
20577 | ||
804d2729 TT |
20578 | struct dwarf2_cu *m_cu; |
20579 | ||
6f77053d PA |
20580 | gdbarch *m_gdbarch; |
20581 | ||
20582 | /* True if we're recording lines. | |
20583 | Otherwise we're building partial symtabs and are just interested in | |
20584 | finding include files mentioned by the line number program. */ | |
20585 | bool m_record_lines_p; | |
20586 | ||
8c43009f | 20587 | /* The line number header. */ |
6f77053d | 20588 | line_header *m_line_header; |
8c43009f | 20589 | |
6f77053d PA |
20590 | /* These are part of the standard DWARF line number state machine, |
20591 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20592 | |
6f77053d | 20593 | unsigned char m_op_index = 0; |
7ba99d21 AT |
20594 | /* The line table index of the current file. */ |
20595 | file_name_index m_file = 1; | |
6f77053d PA |
20596 | unsigned int m_line = 1; |
20597 | ||
20598 | /* These are initialized in the constructor. */ | |
20599 | ||
20600 | CORE_ADDR m_address; | |
20601 | bool m_is_stmt; | |
20602 | unsigned int m_discriminator; | |
d9b3de22 DE |
20603 | |
20604 | /* Additional bits of state we need to track. */ | |
20605 | ||
20606 | /* The last file that we called dwarf2_start_subfile for. | |
20607 | This is only used for TLLs. */ | |
6f77053d | 20608 | unsigned int m_last_file = 0; |
d9b3de22 | 20609 | /* The last file a line number was recorded for. */ |
6f77053d | 20610 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 20611 | |
1313c56e AB |
20612 | /* The address of the last line entry. */ |
20613 | CORE_ADDR m_last_address; | |
20614 | ||
20615 | /* Set to true when a previous line at the same address (using | |
20616 | m_last_address) had m_is_stmt true. This is reset to false when a | |
20617 | line entry at a new address (m_address different to m_last_address) is | |
20618 | processed. */ | |
20619 | bool m_stmt_at_address = false; | |
20620 | ||
804d2729 TT |
20621 | /* When true, record the lines we decode. */ |
20622 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
20623 | |
20624 | /* The last line number that was recorded, used to coalesce | |
20625 | consecutive entries for the same line. This can happen, for | |
20626 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20627 | unsigned int m_last_line = 0; |
20628 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20629 | }; |
d9b3de22 | 20630 | |
6f77053d PA |
20631 | void |
20632 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20633 | { | |
20634 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20635 | / m_line_header->maximum_ops_per_instruction) | |
20636 | * m_line_header->minimum_instruction_length); | |
20637 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20638 | m_op_index = ((m_op_index + adjust) | |
20639 | % m_line_header->maximum_ops_per_instruction); | |
20640 | } | |
d9b3de22 | 20641 | |
6f77053d PA |
20642 | void |
20643 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20644 | { |
6f77053d | 20645 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
20646 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
20647 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
20648 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
20649 | / m_line_header->maximum_ops_per_instruction) |
20650 | * m_line_header->minimum_instruction_length); | |
20651 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 20652 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 20653 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 20654 | |
258bf0ee | 20655 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
20656 | advance_line (line_delta); |
20657 | record_line (false); | |
20658 | m_discriminator = 0; | |
20659 | } | |
d9b3de22 | 20660 | |
6f77053d PA |
20661 | void |
20662 | lnp_state_machine::handle_set_file (file_name_index file) | |
20663 | { | |
20664 | m_file = file; | |
20665 | ||
20666 | const file_entry *fe = current_file (); | |
20667 | if (fe == NULL) | |
20668 | dwarf2_debug_line_missing_file_complaint (); | |
20669 | else if (m_record_lines_p) | |
20670 | { | |
20671 | const char *dir = fe->include_dir (m_line_header); | |
20672 | ||
c24bdb02 | 20673 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20674 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 20675 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
20676 | } |
20677 | } | |
20678 | ||
20679 | void | |
20680 | lnp_state_machine::handle_const_add_pc () | |
20681 | { | |
20682 | CORE_ADDR adjust | |
20683 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20684 | ||
20685 | CORE_ADDR addr_adj | |
20686 | = (((m_op_index + adjust) | |
20687 | / m_line_header->maximum_ops_per_instruction) | |
20688 | * m_line_header->minimum_instruction_length); | |
20689 | ||
20690 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20691 | m_op_index = ((m_op_index + adjust) | |
20692 | % m_line_header->maximum_ops_per_instruction); | |
20693 | } | |
d9b3de22 | 20694 | |
a05a36a5 DE |
20695 | /* Return non-zero if we should add LINE to the line number table. |
20696 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20697 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20698 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20699 | had a non-zero discriminator. | |
20700 | ||
20701 | We have to be careful in the presence of discriminators. | |
20702 | E.g., for this line: | |
20703 | ||
20704 | for (i = 0; i < 100000; i++); | |
20705 | ||
20706 | clang can emit four line number entries for that one line, | |
20707 | each with a different discriminator. | |
20708 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20709 | ||
20710 | However, we want gdb to coalesce all four entries into one. | |
20711 | Otherwise the user could stepi into the middle of the line and | |
20712 | gdb would get confused about whether the pc really was in the | |
20713 | middle of the line. | |
20714 | ||
20715 | Things are further complicated by the fact that two consecutive | |
20716 | line number entries for the same line is a heuristic used by gcc | |
20717 | to denote the end of the prologue. So we can't just discard duplicate | |
20718 | entries, we have to be selective about it. The heuristic we use is | |
20719 | that we only collapse consecutive entries for the same line if at least | |
20720 | one of those entries has a non-zero discriminator. PR 17276. | |
20721 | ||
20722 | Note: Addresses in the line number state machine can never go backwards | |
20723 | within one sequence, thus this coalescing is ok. */ | |
20724 | ||
20725 | static int | |
804d2729 TT |
20726 | dwarf_record_line_p (struct dwarf2_cu *cu, |
20727 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
20728 | int line_has_non_zero_discriminator, |
20729 | struct subfile *last_subfile) | |
20730 | { | |
c24bdb02 | 20731 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
20732 | return 1; |
20733 | if (line != last_line) | |
20734 | return 1; | |
20735 | /* Same line for the same file that we've seen already. | |
20736 | As a last check, for pr 17276, only record the line if the line | |
20737 | has never had a non-zero discriminator. */ | |
20738 | if (!line_has_non_zero_discriminator) | |
20739 | return 1; | |
20740 | return 0; | |
20741 | } | |
20742 | ||
804d2729 TT |
20743 | /* Use the CU's builder to record line number LINE beginning at |
20744 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
20745 | |
20746 | static void | |
d9b3de22 | 20747 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 20748 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 20749 | struct dwarf2_cu *cu) |
252a6764 DE |
20750 | { |
20751 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20752 | ||
27e0867f DE |
20753 | if (dwarf_line_debug) |
20754 | { | |
20755 | fprintf_unfiltered (gdb_stdlog, | |
20756 | "Recording line %u, file %s, address %s\n", | |
20757 | line, lbasename (subfile->name), | |
20758 | paddress (gdbarch, address)); | |
20759 | } | |
20760 | ||
804d2729 | 20761 | if (cu != nullptr) |
8c95582d | 20762 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
20763 | } |
20764 | ||
20765 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20766 | Mark the end of a set of line number records. | |
d9b3de22 | 20767 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20768 | If SUBFILE is NULL the request is ignored. */ |
20769 | ||
20770 | static void | |
20771 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 20772 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 20773 | { |
27e0867f DE |
20774 | if (subfile == NULL) |
20775 | return; | |
20776 | ||
20777 | if (dwarf_line_debug) | |
20778 | { | |
20779 | fprintf_unfiltered (gdb_stdlog, | |
20780 | "Finishing current line, file %s, address %s\n", | |
20781 | lbasename (subfile->name), | |
20782 | paddress (gdbarch, address)); | |
20783 | } | |
20784 | ||
8c95582d | 20785 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
20786 | } |
20787 | ||
6f77053d PA |
20788 | void |
20789 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20790 | { |
d9b3de22 DE |
20791 | if (dwarf_line_debug) |
20792 | { | |
20793 | fprintf_unfiltered (gdb_stdlog, | |
20794 | "Processing actual line %u: file %u," | |
94a72be7 | 20795 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 20796 | m_line, m_file, |
6f77053d | 20797 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
20798 | m_is_stmt, m_discriminator, |
20799 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
20800 | } |
20801 | ||
6f77053d | 20802 | file_entry *fe = current_file (); |
8c43009f PA |
20803 | |
20804 | if (fe == NULL) | |
d9b3de22 DE |
20805 | dwarf2_debug_line_missing_file_complaint (); |
20806 | /* For now we ignore lines not starting on an instruction boundary. | |
20807 | But not when processing end_sequence for compatibility with the | |
20808 | previous version of the code. */ | |
6f77053d | 20809 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20810 | { |
8c43009f | 20811 | fe->included_p = 1; |
8c95582d | 20812 | if (m_record_lines_p) |
d9b3de22 | 20813 | { |
1313c56e AB |
20814 | /* When we switch files we insert an end maker in the first file, |
20815 | switch to the second file and add a new line entry. The | |
20816 | problem is that the end marker inserted in the first file will | |
20817 | discard any previous line entries at the same address. If the | |
20818 | line entries in the first file are marked as is-stmt, while | |
20819 | the new line in the second file is non-stmt, then this means | |
20820 | the end marker will discard is-stmt lines so we can have a | |
20821 | non-stmt line. This means that there are less addresses at | |
20822 | which the user can insert a breakpoint. | |
20823 | ||
20824 | To improve this we track the last address in m_last_address, | |
20825 | and whether we have seen an is-stmt at this address. Then | |
20826 | when switching files, if we have seen a stmt at the current | |
20827 | address, and we are switching to create a non-stmt line, then | |
20828 | discard the new line. */ | |
20829 | bool file_changed | |
20830 | = m_last_subfile != m_cu->get_builder ()->get_current_subfile (); | |
20831 | bool ignore_this_line | |
876518dd TV |
20832 | = ((file_changed && !end_sequence && m_last_address == m_address |
20833 | && !m_is_stmt && m_stmt_at_address) | |
20834 | || (!end_sequence && m_line == 0)); | |
1313c56e AB |
20835 | |
20836 | if ((file_changed && !ignore_this_line) || end_sequence) | |
d9b3de22 | 20837 | { |
804d2729 TT |
20838 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
20839 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
20840 | } |
20841 | ||
1313c56e | 20842 | if (!end_sequence && !ignore_this_line) |
d9b3de22 | 20843 | { |
8c95582d AB |
20844 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
20845 | ||
804d2729 | 20846 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
20847 | m_line_has_non_zero_discriminator, |
20848 | m_last_subfile)) | |
d9b3de22 | 20849 | { |
c24bdb02 | 20850 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 20851 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 20852 | builder->get_current_subfile (), |
8c95582d | 20853 | m_line, m_address, is_stmt, |
804d2729 | 20854 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 20855 | } |
c24bdb02 | 20856 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20857 | m_last_line = m_line; |
d9b3de22 DE |
20858 | } |
20859 | } | |
20860 | } | |
1313c56e AB |
20861 | |
20862 | /* Track whether we have seen any m_is_stmt true at m_address in case we | |
20863 | have multiple line table entries all at m_address. */ | |
20864 | if (m_last_address != m_address) | |
20865 | { | |
20866 | m_stmt_at_address = false; | |
20867 | m_last_address = m_address; | |
20868 | } | |
20869 | m_stmt_at_address |= m_is_stmt; | |
d9b3de22 DE |
20870 | } |
20871 | ||
804d2729 TT |
20872 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
20873 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 20874 | { |
804d2729 | 20875 | m_cu = cu; |
6f77053d PA |
20876 | m_gdbarch = arch; |
20877 | m_record_lines_p = record_lines_p; | |
20878 | m_line_header = lh; | |
d9b3de22 | 20879 | |
804d2729 | 20880 | m_currently_recording_lines = true; |
d9b3de22 | 20881 | |
d9b3de22 DE |
20882 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20883 | was a line entry for it so that the backend has a chance to adjust it | |
20884 | and also record it in case it needs it. This is currently used by MIPS | |
20885 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20886 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20887 | m_is_stmt = lh->default_is_stmt; | |
20888 | m_discriminator = 0; | |
1313c56e AB |
20889 | |
20890 | m_last_address = m_address; | |
20891 | m_stmt_at_address = false; | |
252a6764 DE |
20892 | } |
20893 | ||
6f77053d PA |
20894 | void |
20895 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20896 | const gdb_byte *line_ptr, | |
7ab6656f | 20897 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 20898 | { |
a8caed5d FS |
20899 | /* Linkers resolve a symbolic relocation referencing a GC'd function to 0 or |
20900 | -1. If ADDRESS is 0, ignoring the opcode will err if the text section is | |
20901 | located at 0x0. In this case, additionally check that if | |
20902 | ADDRESS < UNRELOCATED_LOWPC. */ | |
924c2928 | 20903 | |
a8caed5d FS |
20904 | if ((address == 0 && address < unrelocated_lowpc) |
20905 | || address == (CORE_ADDR) -1) | |
924c2928 DE |
20906 | { |
20907 | /* This line table is for a function which has been | |
20908 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20909 | ||
5e22e966 | 20910 | struct objfile *objfile = cu->per_objfile->objfile; |
924c2928 DE |
20911 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20912 | ||
b98664d3 | 20913 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 20914 | line_offset, objfile_name (objfile)); |
804d2729 TT |
20915 | m_currently_recording_lines = false; |
20916 | /* Note: m_currently_recording_lines is left as false until we see | |
20917 | DW_LNE_end_sequence. */ | |
924c2928 DE |
20918 | } |
20919 | } | |
20920 | ||
f3f5162e | 20921 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20922 | Process the line number information in LH. |
20923 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20924 | program in order to set included_p for every referenced header. */ | |
debd256d | 20925 | |
c906108c | 20926 | static void |
43f3e411 DE |
20927 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20928 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20929 | { |
d521ce57 TT |
20930 | const gdb_byte *line_ptr, *extended_end; |
20931 | const gdb_byte *line_end; | |
a8c50c1f | 20932 | unsigned int bytes_read, extended_len; |
699ca60a | 20933 | unsigned char op_code, extended_op; |
e142c38c | 20934 | CORE_ADDR baseaddr; |
5e22e966 | 20935 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 20936 | bfd *abfd = objfile->obfd; |
08feed99 | 20937 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
20938 | /* True if we're recording line info (as opposed to building partial |
20939 | symtabs and just interested in finding include files mentioned by | |
20940 | the line number program). */ | |
20941 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 20942 | |
b3b3bada | 20943 | baseaddr = objfile->text_section_offset (); |
c906108c | 20944 | |
debd256d JB |
20945 | line_ptr = lh->statement_program_start; |
20946 | line_end = lh->statement_program_end; | |
c906108c SS |
20947 | |
20948 | /* Read the statement sequences until there's nothing left. */ | |
20949 | while (line_ptr < line_end) | |
20950 | { | |
6f77053d PA |
20951 | /* The DWARF line number program state machine. Reset the state |
20952 | machine at the start of each sequence. */ | |
804d2729 | 20953 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 20954 | bool end_sequence = false; |
d9b3de22 | 20955 | |
8c43009f | 20956 | if (record_lines_p) |
c906108c | 20957 | { |
8c43009f PA |
20958 | /* Start a subfile for the current file of the state |
20959 | machine. */ | |
20960 | const file_entry *fe = state_machine.current_file (); | |
20961 | ||
20962 | if (fe != NULL) | |
804d2729 | 20963 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
20964 | } |
20965 | ||
a738430d | 20966 | /* Decode the table. */ |
d9b3de22 | 20967 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20968 | { |
20969 | op_code = read_1_byte (abfd, line_ptr); | |
20970 | line_ptr += 1; | |
9aa1fe7e | 20971 | |
debd256d | 20972 | if (op_code >= lh->opcode_base) |
6e70227d | 20973 | { |
8e07a239 | 20974 | /* Special opcode. */ |
6f77053d | 20975 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20976 | } |
20977 | else switch (op_code) | |
c906108c SS |
20978 | { |
20979 | case DW_LNS_extended_op: | |
3e43a32a MS |
20980 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20981 | &bytes_read); | |
473b7be6 | 20982 | line_ptr += bytes_read; |
a8c50c1f | 20983 | extended_end = line_ptr + extended_len; |
c906108c SS |
20984 | extended_op = read_1_byte (abfd, line_ptr); |
20985 | line_ptr += 1; | |
8f34b746 TV |
20986 | if (DW_LNE_lo_user <= extended_op |
20987 | && extended_op <= DW_LNE_hi_user) | |
20988 | { | |
20989 | /* Vendor extension, ignore. */ | |
20990 | line_ptr = extended_end; | |
20991 | break; | |
20992 | } | |
c906108c SS |
20993 | switch (extended_op) |
20994 | { | |
20995 | case DW_LNE_end_sequence: | |
6f77053d PA |
20996 | state_machine.handle_end_sequence (); |
20997 | end_sequence = true; | |
c906108c SS |
20998 | break; |
20999 | case DW_LNE_set_address: | |
d9b3de22 DE |
21000 | { |
21001 | CORE_ADDR address | |
c8a7a66f | 21002 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 21003 | line_ptr += bytes_read; |
6f77053d PA |
21004 | |
21005 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 21006 | lowpc - baseaddr, address); |
6f77053d | 21007 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 21008 | } |
c906108c SS |
21009 | break; |
21010 | case DW_LNE_define_file: | |
debd256d | 21011 | { |
d521ce57 | 21012 | const char *cur_file; |
ecfb656c PA |
21013 | unsigned int mod_time, length; |
21014 | dir_index dindex; | |
6e70227d | 21015 | |
3e43a32a MS |
21016 | cur_file = read_direct_string (abfd, line_ptr, |
21017 | &bytes_read); | |
debd256d | 21018 | line_ptr += bytes_read; |
ecfb656c | 21019 | dindex = (dir_index) |
debd256d JB |
21020 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
21021 | line_ptr += bytes_read; | |
21022 | mod_time = | |
21023 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21024 | line_ptr += bytes_read; | |
21025 | length = | |
21026 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21027 | line_ptr += bytes_read; | |
ecfb656c | 21028 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 21029 | } |
c906108c | 21030 | break; |
d0c6ba3d | 21031 | case DW_LNE_set_discriminator: |
6f77053d PA |
21032 | { |
21033 | /* The discriminator is not interesting to the | |
21034 | debugger; just ignore it. We still need to | |
21035 | check its value though: | |
21036 | if there are consecutive entries for the same | |
21037 | (non-prologue) line we want to coalesce them. | |
21038 | PR 17276. */ | |
21039 | unsigned int discr | |
21040 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21041 | line_ptr += bytes_read; | |
21042 | ||
21043 | state_machine.handle_set_discriminator (discr); | |
21044 | } | |
d0c6ba3d | 21045 | break; |
c906108c | 21046 | default: |
b98664d3 | 21047 | complaint (_("mangled .debug_line section")); |
debd256d | 21048 | return; |
c906108c | 21049 | } |
a8c50c1f DJ |
21050 | /* Make sure that we parsed the extended op correctly. If e.g. |
21051 | we expected a different address size than the producer used, | |
21052 | we may have read the wrong number of bytes. */ | |
21053 | if (line_ptr != extended_end) | |
21054 | { | |
b98664d3 | 21055 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
21056 | return; |
21057 | } | |
c906108c SS |
21058 | break; |
21059 | case DW_LNS_copy: | |
6f77053d | 21060 | state_machine.handle_copy (); |
c906108c SS |
21061 | break; |
21062 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21063 | { |
21064 | CORE_ADDR adjust | |
21065 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21066 | line_ptr += bytes_read; |
6f77053d PA |
21067 | |
21068 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21069 | } |
c906108c SS |
21070 | break; |
21071 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21072 | { |
21073 | int line_delta | |
21074 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21075 | line_ptr += bytes_read; |
6f77053d PA |
21076 | |
21077 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21078 | } |
c906108c SS |
21079 | break; |
21080 | case DW_LNS_set_file: | |
d9b3de22 | 21081 | { |
6f77053d | 21082 | file_name_index file |
ecfb656c PA |
21083 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21084 | &bytes_read); | |
d9b3de22 | 21085 | line_ptr += bytes_read; |
8c43009f | 21086 | |
6f77053d | 21087 | state_machine.handle_set_file (file); |
d9b3de22 | 21088 | } |
c906108c SS |
21089 | break; |
21090 | case DW_LNS_set_column: | |
0ad93d4f | 21091 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21092 | line_ptr += bytes_read; |
21093 | break; | |
21094 | case DW_LNS_negate_stmt: | |
6f77053d | 21095 | state_machine.handle_negate_stmt (); |
c906108c SS |
21096 | break; |
21097 | case DW_LNS_set_basic_block: | |
c906108c | 21098 | break; |
c2c6d25f JM |
21099 | /* Add to the address register of the state machine the |
21100 | address increment value corresponding to special opcode | |
a738430d MK |
21101 | 255. I.e., this value is scaled by the minimum |
21102 | instruction length since special opcode 255 would have | |
b021a221 | 21103 | scaled the increment. */ |
c906108c | 21104 | case DW_LNS_const_add_pc: |
6f77053d | 21105 | state_machine.handle_const_add_pc (); |
c906108c SS |
21106 | break; |
21107 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21108 | { |
6f77053d | 21109 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21110 | line_ptr += 2; |
6f77053d PA |
21111 | |
21112 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21113 | } |
c906108c | 21114 | break; |
9aa1fe7e | 21115 | default: |
a738430d MK |
21116 | { |
21117 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21118 | int i; |
a738430d | 21119 | |
debd256d | 21120 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21121 | { |
21122 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21123 | line_ptr += bytes_read; | |
21124 | } | |
21125 | } | |
c906108c SS |
21126 | } |
21127 | } | |
d9b3de22 DE |
21128 | |
21129 | if (!end_sequence) | |
21130 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21131 | ||
21132 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21133 | in which case we still finish recording the last line). */ | |
6f77053d | 21134 | state_machine.record_line (true); |
c906108c | 21135 | } |
f3f5162e DE |
21136 | } |
21137 | ||
21138 | /* Decode the Line Number Program (LNP) for the given line_header | |
21139 | structure and CU. The actual information extracted and the type | |
21140 | of structures created from the LNP depends on the value of PST. | |
21141 | ||
21142 | 1. If PST is NULL, then this procedure uses the data from the program | |
21143 | to create all necessary symbol tables, and their linetables. | |
21144 | ||
21145 | 2. If PST is not NULL, this procedure reads the program to determine | |
21146 | the list of files included by the unit represented by PST, and | |
21147 | builds all the associated partial symbol tables. | |
21148 | ||
21149 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21150 | It is used for relative paths in the line table. | |
21151 | NOTE: When processing partial symtabs (pst != NULL), | |
21152 | comp_dir == pst->dirname. | |
21153 | ||
21154 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21155 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21156 | symtab we don't use it in the name of the psymtabs we create. | |
21157 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21158 | A good testcase for this is mb-inline.exp. |
21159 | ||
527f3840 JK |
21160 | LOWPC is the lowest address in CU (or 0 if not known). |
21161 | ||
21162 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21163 | for its PC<->lines mapping information. Otherwise only the filename | |
21164 | table is read in. */ | |
f3f5162e DE |
21165 | |
21166 | static void | |
21167 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 21168 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 21169 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21170 | { |
5e22e966 | 21171 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21172 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21173 | |
527f3840 JK |
21174 | if (decode_mapping) |
21175 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21176 | |
21177 | if (decode_for_pst_p) | |
21178 | { | |
aaa75496 JB |
21179 | /* Now that we're done scanning the Line Header Program, we can |
21180 | create the psymtab of each included file. */ | |
7ba99d21 AT |
21181 | for (auto &file_entry : lh->file_names ()) |
21182 | if (file_entry.included_p == 1) | |
aaa75496 | 21183 | { |
c89b44cd | 21184 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21185 | const char *include_name = |
7ba99d21 AT |
21186 | psymtab_include_file_name (lh, file_entry, pst, |
21187 | comp_dir, &name_holder); | |
c6da4cef | 21188 | if (include_name != NULL) |
aaa75496 JB |
21189 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21190 | } | |
21191 | } | |
cb1df416 DJ |
21192 | else |
21193 | { | |
21194 | /* Make sure a symtab is created for every file, even files | |
21195 | which contain only variables (i.e. no code with associated | |
21196 | line numbers). */ | |
c24bdb02 KS |
21197 | buildsym_compunit *builder = cu->get_builder (); |
21198 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 21199 | |
7ba99d21 | 21200 | for (auto &fe : lh->file_names ()) |
cb1df416 | 21201 | { |
804d2729 | 21202 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 21203 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 21204 | { |
c24bdb02 | 21205 | builder->get_current_subfile ()->symtab |
804d2729 | 21206 | = allocate_symtab (cust, |
c24bdb02 | 21207 | builder->get_current_subfile ()->name); |
43f3e411 | 21208 | } |
c24bdb02 | 21209 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
21210 | } |
21211 | } | |
c906108c SS |
21212 | } |
21213 | ||
21214 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21215 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21216 | or NULL if not known. |
c906108c SS |
21217 | This routine tries to keep line numbers from identical absolute and |
21218 | relative file names in a common subfile. | |
21219 | ||
21220 | Using the `list' example from the GDB testsuite, which resides in | |
21221 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21222 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21223 | ||
c5aa993b | 21224 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21225 | DW_AT_comp_dir: /compdir |
357e46e7 | 21226 | files.files[0].name: list0.h |
c5aa993b | 21227 | files.files[0].dir: /srcdir |
357e46e7 | 21228 | files.files[1].name: list0.c |
c5aa993b | 21229 | files.files[1].dir: /srcdir |
c906108c SS |
21230 | |
21231 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21232 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21233 | start_subfile will ensure that this happens provided that we pass the | |
21234 | concatenation of files.files[1].dir and files.files[1].name as the | |
21235 | subfile's name. */ | |
c906108c SS |
21236 | |
21237 | static void | |
804d2729 TT |
21238 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
21239 | const char *dirname) | |
c906108c | 21240 | { |
43816ebc | 21241 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 21242 | |
4d663531 | 21243 | /* In order not to lose the line information directory, |
4f1520fb FR |
21244 | we concatenate it to the filename when it makes sense. |
21245 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21246 | information): ``The directory index is ignored for file names | |
21247 | that represent full path names''. Thus ignoring dirname in the | |
21248 | `else' branch below isn't an issue. */ | |
c906108c | 21249 | |
d5166ae1 | 21250 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 21251 | { |
43816ebc TT |
21252 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
21253 | filename = copy.get (); | |
d521ce57 | 21254 | } |
c906108c | 21255 | |
c24bdb02 | 21256 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
21257 | } |
21258 | ||
804d2729 TT |
21259 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
21260 | buildsym_compunit constructor. */ | |
f4dc4d17 | 21261 | |
c24bdb02 KS |
21262 | struct compunit_symtab * |
21263 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
21264 | CORE_ADDR low_pc) | |
f4dc4d17 | 21265 | { |
c24bdb02 | 21266 | gdb_assert (m_builder == nullptr); |
43f3e411 | 21267 | |
c24bdb02 | 21268 | m_builder.reset (new struct buildsym_compunit |
f6e649dd | 21269 | (this->per_objfile->objfile, |
c24bdb02 | 21270 | name, comp_dir, language, low_pc)); |
93b8bea4 | 21271 | |
c24bdb02 | 21272 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 21273 | |
c24bdb02 KS |
21274 | get_builder ()->record_debugformat ("DWARF 2"); |
21275 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 21276 | |
c24bdb02 | 21277 | processing_has_namespace_info = false; |
43f3e411 | 21278 | |
c24bdb02 | 21279 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
21280 | } |
21281 | ||
4c2df51b DJ |
21282 | static void |
21283 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21284 | struct dwarf2_cu *cu) |
4c2df51b | 21285 | { |
5e22e966 | 21286 | struct objfile *objfile = cu->per_objfile->objfile; |
e7c27a73 DJ |
21287 | struct comp_unit_head *cu_header = &cu->header; |
21288 | ||
4c2df51b DJ |
21289 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21290 | code here to turn a symbol with DW_AT_external and a | |
21291 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21292 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21293 | with some versions of binutils) where shared libraries could have | |
21294 | relocations against symbols in their debug information - the | |
21295 | minimal symbol would have the right address, but the debug info | |
21296 | would not. It's no longer necessary, because we will explicitly | |
21297 | apply relocations when we read in the debug information now. */ | |
21298 | ||
21299 | /* A DW_AT_location attribute with no contents indicates that a | |
21300 | variable has been optimized away. */ | |
4fc6c0d5 | 21301 | if (attr->form_is_block () && DW_BLOCK (attr)->size == 0) |
4c2df51b | 21302 | { |
f1e6e072 | 21303 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21304 | return; |
21305 | } | |
21306 | ||
21307 | /* Handle one degenerate form of location expression specially, to | |
21308 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
21309 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
21310 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 21311 | |
4fc6c0d5 | 21312 | if (attr->form_is_block () |
3019eac3 DE |
21313 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
21314 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
21315 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
21316 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
21317 | && (DW_BLOCK (attr)->size |
21318 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 21319 | { |
891d2f0b | 21320 | unsigned int dummy; |
4c2df51b | 21321 | |
3019eac3 | 21322 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
c8a7a66f TT |
21323 | SET_SYMBOL_VALUE_ADDRESS |
21324 | (sym, cu->header.read_address (objfile->obfd, | |
21325 | DW_BLOCK (attr)->data + 1, | |
21326 | &dummy)); | |
3019eac3 | 21327 | else |
38583298 TT |
21328 | SET_SYMBOL_VALUE_ADDRESS |
21329 | (sym, read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, | |
21330 | &dummy)); | |
f1e6e072 | 21331 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b | 21332 | fixup_symbol_section (sym, objfile); |
6a053cb1 TT |
21333 | SET_SYMBOL_VALUE_ADDRESS |
21334 | (sym, | |
21335 | SYMBOL_VALUE_ADDRESS (sym) | |
21336 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
4c2df51b DJ |
21337 | return; |
21338 | } | |
21339 | ||
21340 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21341 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21342 | (i.e. when the value of a register or memory location is | |
21343 | referenced, or a thread-local block, etc.). Then again, it might | |
21344 | not be worthwhile. I'm assuming that it isn't unless performance | |
21345 | or memory numbers show me otherwise. */ | |
21346 | ||
f1e6e072 | 21347 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21348 | |
f1e6e072 | 21349 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 21350 | cu->has_loclist = true; |
4c2df51b DJ |
21351 | } |
21352 | ||
c906108c SS |
21353 | /* Given a pointer to a DWARF information entry, figure out if we need |
21354 | to make a symbol table entry for it, and if so, create a new entry | |
21355 | and return a pointer to it. | |
21356 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21357 | used the passed type. |
21358 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21359 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21360 | |
21361 | static struct symbol * | |
5e2db402 TT |
21362 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21363 | struct symbol *space) | |
c906108c | 21364 | { |
976ca316 SM |
21365 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
21366 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 21367 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 21368 | struct symbol *sym = NULL; |
15d034d0 | 21369 | const char *name; |
c906108c SS |
21370 | struct attribute *attr = NULL; |
21371 | struct attribute *attr2 = NULL; | |
e142c38c | 21372 | CORE_ADDR baseaddr; |
e37fd15a SW |
21373 | struct pending **list_to_add = NULL; |
21374 | ||
edb3359d | 21375 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 21376 | |
b3b3bada | 21377 | baseaddr = objfile->text_section_offset (); |
c906108c | 21378 | |
94af9270 | 21379 | name = dwarf2_name (die, cu); |
c906108c SS |
21380 | if (name) |
21381 | { | |
34eaf542 | 21382 | int suppress_add = 0; |
94af9270 | 21383 | |
34eaf542 TT |
21384 | if (space) |
21385 | sym = space; | |
21386 | else | |
8c14c3a3 | 21387 | sym = new (&objfile->objfile_obstack) symbol; |
c906108c | 21388 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21389 | |
21390 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 21391 | sym->set_language (cu->language, &objfile->objfile_obstack); |
f55ee35c JK |
21392 | /* Fortran does not have mangling standard and the mangling does differ |
21393 | between gfortran, iFort etc. */ | |
bcfe6157 TT |
21394 | const char *physname |
21395 | = (cu->language == language_fortran | |
21396 | ? dwarf2_full_name (name, die, cu) | |
21397 | : dwarf2_physname (name, die, cu)); | |
21398 | const char *linkagename = dw2_linkage_name (die, cu); | |
21399 | ||
21400 | if (linkagename == nullptr || cu->language == language_ada) | |
21401 | sym->set_linkage_name (physname); | |
21402 | else | |
21403 | { | |
21404 | sym->set_demangled_name (physname, &objfile->objfile_obstack); | |
21405 | sym->set_linkage_name (linkagename); | |
21406 | } | |
f55ee35c | 21407 | |
c906108c | 21408 | /* Default assumptions. |
c5aa993b | 21409 | Use the passed type or decode it from the die. */ |
176620f1 | 21410 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21411 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21412 | if (type != NULL) |
21413 | SYMBOL_TYPE (sym) = type; | |
21414 | else | |
e7c27a73 | 21415 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21416 | attr = dwarf2_attr (die, |
21417 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21418 | cu); | |
435d3d88 | 21419 | if (attr != nullptr) |
c906108c SS |
21420 | { |
21421 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
21422 | } | |
cb1df416 | 21423 | |
edb3359d DJ |
21424 | attr = dwarf2_attr (die, |
21425 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21426 | cu); | |
435d3d88 | 21427 | if (attr != nullptr) |
cb1df416 | 21428 | { |
ecfb656c | 21429 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 21430 | struct file_entry *fe; |
9a619af0 | 21431 | |
ecfb656c PA |
21432 | if (cu->line_header != NULL) |
21433 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21434 | else |
21435 | fe = NULL; | |
21436 | ||
21437 | if (fe == NULL) | |
b98664d3 | 21438 | complaint (_("file index out of range")); |
8c43009f PA |
21439 | else |
21440 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21441 | } |
21442 | ||
c906108c SS |
21443 | switch (die->tag) |
21444 | { | |
21445 | case DW_TAG_label: | |
e142c38c | 21446 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 21447 | if (attr != nullptr) |
3e29f34a MR |
21448 | { |
21449 | CORE_ADDR addr; | |
21450 | ||
cd6c91b4 | 21451 | addr = attr->value_as_address (); |
3e29f34a | 21452 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 21453 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
8f5c6526 | 21454 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
3e29f34a | 21455 | } |
8f5c6526 TV |
21456 | else |
21457 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; | |
0f5238ed TT |
21458 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21459 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
d3cb6808 | 21460 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21461 | break; |
21462 | case DW_TAG_subprogram: | |
21463 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21464 | finish_block. */ | |
f1e6e072 | 21465 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21466 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d | 21467 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
0a4b0913 AB |
21468 | || cu->language == language_ada |
21469 | || cu->language == language_fortran) | |
c906108c | 21470 | { |
2cfa0c8d | 21471 | /* Subprograms marked external are stored as a global symbol. |
0a4b0913 AB |
21472 | Ada and Fortran subprograms, whether marked external or |
21473 | not, are always stored as a global symbol, because we want | |
21474 | to be able to access them globally. For instance, we want | |
21475 | to be able to break on a nested subprogram without having | |
21476 | to specify the context. */ | |
c24bdb02 | 21477 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
21478 | } |
21479 | else | |
21480 | { | |
e37fd15a | 21481 | list_to_add = cu->list_in_scope; |
c906108c SS |
21482 | } |
21483 | break; | |
edb3359d DJ |
21484 | case DW_TAG_inlined_subroutine: |
21485 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21486 | finish_block. */ | |
f1e6e072 | 21487 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21488 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21489 | list_to_add = cu->list_in_scope; |
edb3359d | 21490 | break; |
34eaf542 TT |
21491 | case DW_TAG_template_value_param: |
21492 | suppress_add = 1; | |
21493 | /* Fall through. */ | |
72929c62 | 21494 | case DW_TAG_constant: |
c906108c | 21495 | case DW_TAG_variable: |
254e6b9e | 21496 | case DW_TAG_member: |
0963b4bd MS |
21497 | /* Compilation with minimal debug info may result in |
21498 | variables with missing type entries. Change the | |
21499 | misleading `void' type to something sensible. */ | |
78134374 | 21500 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_VOID) |
46a4882b | 21501 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21502 | |
e142c38c | 21503 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21504 | /* In the case of DW_TAG_member, we should only be called for |
21505 | static const members. */ | |
21506 | if (die->tag == DW_TAG_member) | |
21507 | { | |
3863f96c DE |
21508 | /* dwarf2_add_field uses die_is_declaration, |
21509 | so we do the same. */ | |
254e6b9e DE |
21510 | gdb_assert (die_is_declaration (die, cu)); |
21511 | gdb_assert (attr); | |
21512 | } | |
435d3d88 | 21513 | if (attr != nullptr) |
c906108c | 21514 | { |
e7c27a73 | 21515 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21516 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21517 | if (!suppress_add) |
34eaf542 TT |
21518 | { |
21519 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 21520 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 21521 | else |
e37fd15a | 21522 | list_to_add = cu->list_in_scope; |
34eaf542 | 21523 | } |
c906108c SS |
21524 | break; |
21525 | } | |
e142c38c | 21526 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 21527 | if (attr != nullptr) |
c906108c | 21528 | { |
e7c27a73 | 21529 | var_decode_location (attr, sym, cu); |
e142c38c | 21530 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21531 | |
21532 | /* Fortran explicitly imports any global symbols to the local | |
21533 | scope by DW_TAG_common_block. */ | |
21534 | if (cu->language == language_fortran && die->parent | |
21535 | && die->parent->tag == DW_TAG_common_block) | |
21536 | attr2 = NULL; | |
21537 | ||
caac4577 JG |
21538 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21539 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
976ca316 | 21540 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
21541 | { |
21542 | /* When a static variable is eliminated by the linker, | |
21543 | the corresponding debug information is not stripped | |
21544 | out, but the variable address is set to null; | |
21545 | do not add such variables into symbol table. */ | |
21546 | } | |
21547 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21548 | { |
4b610737 TT |
21549 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21550 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
976ca316 | 21551 | && per_objfile->per_bfd->can_copy) |
4b610737 TT |
21552 | { |
21553 | /* A global static variable might be subject to | |
21554 | copy relocation. We first check for a local | |
21555 | minsym, though, because maybe the symbol was | |
21556 | marked hidden, in which case this would not | |
21557 | apply. */ | |
21558 | bound_minimal_symbol found | |
21559 | = (lookup_minimal_symbol_linkage | |
987012b8 | 21560 | (sym->linkage_name (), objfile)); |
4b610737 TT |
21561 | if (found.minsym != nullptr) |
21562 | sym->maybe_copied = 1; | |
21563 | } | |
f55ee35c | 21564 | |
1c809c68 TT |
21565 | /* A variable with DW_AT_external is never static, |
21566 | but it may be block-scoped. */ | |
804d2729 | 21567 | list_to_add |
c24bdb02 KS |
21568 | = ((cu->list_in_scope |
21569 | == cu->get_builder ()->get_file_symbols ()) | |
21570 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21571 | : cu->list_in_scope); |
1c809c68 | 21572 | } |
c906108c | 21573 | else |
e37fd15a | 21574 | list_to_add = cu->list_in_scope; |
c906108c SS |
21575 | } |
21576 | else | |
21577 | { | |
21578 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21579 | If it is an external symbol and we have type information |
21580 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21581 | The address of the variable will then be determined from | |
21582 | the minimal symbol table whenever the variable is | |
21583 | referenced. */ | |
e142c38c | 21584 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21585 | |
21586 | /* Fortran explicitly imports any global symbols to the local | |
21587 | scope by DW_TAG_common_block. */ | |
21588 | if (cu->language == language_fortran && die->parent | |
21589 | && die->parent->tag == DW_TAG_common_block) | |
21590 | { | |
21591 | /* SYMBOL_CLASS doesn't matter here because | |
21592 | read_common_block is going to reset it. */ | |
21593 | if (!suppress_add) | |
21594 | list_to_add = cu->list_in_scope; | |
21595 | } | |
21596 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21597 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21598 | { |
0fe7935b DJ |
21599 | /* A variable with DW_AT_external is never static, but it |
21600 | may be block-scoped. */ | |
804d2729 | 21601 | list_to_add |
c24bdb02 KS |
21602 | = ((cu->list_in_scope |
21603 | == cu->get_builder ()->get_file_symbols ()) | |
21604 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21605 | : cu->list_in_scope); |
0fe7935b | 21606 | |
f1e6e072 | 21607 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21608 | } |
442ddf59 JK |
21609 | else if (!die_is_declaration (die, cu)) |
21610 | { | |
21611 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21612 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21613 | if (!suppress_add) |
21614 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21615 | } |
c906108c SS |
21616 | } |
21617 | break; | |
21618 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
21619 | { |
21620 | /* If we are inside a function, mark this as an argument. If | |
21621 | not, we might be looking at an argument to an inlined function | |
21622 | when we do not have enough information to show inlined frames; | |
21623 | pretend it's a local variable in that case so that the user can | |
21624 | still see it. */ | |
804d2729 | 21625 | struct context_stack *curr |
c24bdb02 | 21626 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
21627 | if (curr != nullptr && curr->name != nullptr) |
21628 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
21629 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 21630 | if (attr != nullptr) |
a60f3166 TT |
21631 | { |
21632 | var_decode_location (attr, sym, cu); | |
21633 | } | |
21634 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 21635 | if (attr != nullptr) |
a60f3166 TT |
21636 | { |
21637 | dwarf2_const_value (attr, sym, cu); | |
21638 | } | |
f346a30d | 21639 | |
a60f3166 TT |
21640 | list_to_add = cu->list_in_scope; |
21641 | } | |
c906108c SS |
21642 | break; |
21643 | case DW_TAG_unspecified_parameters: | |
21644 | /* From varargs functions; gdb doesn't seem to have any | |
21645 | interest in this information, so just ignore it for now. | |
21646 | (FIXME?) */ | |
21647 | break; | |
34eaf542 TT |
21648 | case DW_TAG_template_type_param: |
21649 | suppress_add = 1; | |
21650 | /* Fall through. */ | |
c906108c | 21651 | case DW_TAG_class_type: |
680b30c7 | 21652 | case DW_TAG_interface_type: |
c906108c SS |
21653 | case DW_TAG_structure_type: |
21654 | case DW_TAG_union_type: | |
72019c9c | 21655 | case DW_TAG_set_type: |
c906108c | 21656 | case DW_TAG_enumeration_type: |
f1e6e072 | 21657 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21658 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21659 | |
63d06c5c | 21660 | { |
9c37b5ae | 21661 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21662 | really ever be static objects: otherwise, if you try |
21663 | to, say, break of a class's method and you're in a file | |
21664 | which doesn't mention that class, it won't work unless | |
21665 | the check for all static symbols in lookup_symbol_aux | |
21666 | saves you. See the OtherFileClass tests in | |
21667 | gdb.c++/namespace.exp. */ | |
21668 | ||
e37fd15a | 21669 | if (!suppress_add) |
34eaf542 | 21670 | { |
c24bdb02 | 21671 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 21672 | list_to_add |
c24bdb02 | 21673 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 21674 | && cu->language == language_cplus |
c24bdb02 | 21675 | ? builder->get_global_symbols () |
804d2729 | 21676 | : cu->list_in_scope); |
63d06c5c | 21677 | |
64382290 | 21678 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21679 | ... }" also defines a typedef for "foo". */ |
64382290 | 21680 | if (cu->language == language_cplus |
45280282 | 21681 | || cu->language == language_ada |
c44af4eb TT |
21682 | || cu->language == language_d |
21683 | || cu->language == language_rust) | |
64382290 TT |
21684 | { |
21685 | /* The symbol's name is already allocated along | |
21686 | with this objfile, so we don't need to | |
21687 | duplicate it for the type. */ | |
7d93a1e0 | 21688 | if (SYMBOL_TYPE (sym)->name () == 0) |
d0e39ea2 | 21689 | SYMBOL_TYPE (sym)->set_name (sym->search_name ()); |
64382290 | 21690 | } |
63d06c5c DC |
21691 | } |
21692 | } | |
c906108c SS |
21693 | break; |
21694 | case DW_TAG_typedef: | |
f1e6e072 | 21695 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21696 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21697 | list_to_add = cu->list_in_scope; |
63d06c5c | 21698 | break; |
c906108c | 21699 | case DW_TAG_base_type: |
a02abb62 | 21700 | case DW_TAG_subrange_type: |
f1e6e072 | 21701 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21702 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21703 | list_to_add = cu->list_in_scope; |
c906108c SS |
21704 | break; |
21705 | case DW_TAG_enumerator: | |
e142c38c | 21706 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 21707 | if (attr != nullptr) |
c906108c | 21708 | { |
e7c27a73 | 21709 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21710 | } |
63d06c5c DC |
21711 | { |
21712 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21713 | DW_TAG_class_type, etc. block. */ | |
21714 | ||
804d2729 | 21715 | list_to_add |
c24bdb02 | 21716 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 21717 | && cu->language == language_cplus |
c24bdb02 | 21718 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 21719 | : cu->list_in_scope); |
63d06c5c | 21720 | } |
c906108c | 21721 | break; |
74921315 | 21722 | case DW_TAG_imported_declaration: |
5c4e30ca | 21723 | case DW_TAG_namespace: |
f1e6e072 | 21724 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 21725 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 21726 | break; |
530e8392 KB |
21727 | case DW_TAG_module: |
21728 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21729 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 21730 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 21731 | break; |
4357ac6c | 21732 | case DW_TAG_common_block: |
f1e6e072 | 21733 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 21734 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 21735 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 21736 | break; |
c906108c SS |
21737 | default: |
21738 | /* Not a tag we recognize. Hopefully we aren't processing | |
21739 | trash data, but since we must specifically ignore things | |
21740 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21741 | this point. */ |
b98664d3 | 21742 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 21743 | dwarf_tag_name (die->tag)); |
c906108c SS |
21744 | break; |
21745 | } | |
df8a16a1 | 21746 | |
e37fd15a SW |
21747 | if (suppress_add) |
21748 | { | |
21749 | sym->hash_next = objfile->template_symbols; | |
21750 | objfile->template_symbols = sym; | |
21751 | list_to_add = NULL; | |
21752 | } | |
21753 | ||
21754 | if (list_to_add != NULL) | |
d3cb6808 | 21755 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 21756 | |
df8a16a1 DJ |
21757 | /* For the benefit of old versions of GCC, check for anonymous |
21758 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21759 | if (!cu->processing_has_namespace_info |
94af9270 | 21760 | && cu->language == language_cplus) |
c24bdb02 | 21761 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
21762 | } |
21763 | return (sym); | |
21764 | } | |
21765 | ||
98bfdba5 PA |
21766 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21767 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21768 | standard (v4) is not entirely clear about the meaning of using | |
21769 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21770 | wider than the data. The conclusion of a discussion on the DWARF | |
21771 | list was that this is unspecified. We choose to always zero-extend | |
21772 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21773 | |
98bfdba5 | 21774 | static gdb_byte * |
ff39bb5e | 21775 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21776 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21777 | { |
5e22e966 | 21778 | struct objfile *objfile = cu->per_objfile->objfile; |
e17a4113 UW |
21779 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21780 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21781 | LONGEST l = DW_UNSND (attr); |
21782 | ||
21783 | if (bits < sizeof (*value) * 8) | |
21784 | { | |
21785 | l &= ((LONGEST) 1 << bits) - 1; | |
21786 | *value = l; | |
21787 | } | |
21788 | else if (bits == sizeof (*value) * 8) | |
21789 | *value = l; | |
21790 | else | |
21791 | { | |
224c3ddb | 21792 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21793 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21794 | return bytes; | |
21795 | } | |
21796 | ||
21797 | return NULL; | |
21798 | } | |
21799 | ||
21800 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21801 | the value does not fit in *VALUE, set *BYTES - either already | |
21802 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21803 | or, set *BATON, if we translated the constant to a location | |
21804 | expression. */ | |
21805 | ||
21806 | static void | |
ff39bb5e | 21807 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21808 | const char *name, struct obstack *obstack, |
21809 | struct dwarf2_cu *cu, | |
d521ce57 | 21810 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21811 | struct dwarf2_locexpr_baton **baton) |
21812 | { | |
5e22e966 | 21813 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 21814 | struct objfile *objfile = per_objfile->objfile; |
98bfdba5 | 21815 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21816 | struct dwarf_block *blk; |
98bfdba5 PA |
21817 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21818 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21819 | ||
21820 | *value = 0; | |
21821 | *bytes = NULL; | |
21822 | *baton = NULL; | |
c906108c SS |
21823 | |
21824 | switch (attr->form) | |
21825 | { | |
21826 | case DW_FORM_addr: | |
336d760d | 21827 | case DW_FORM_addrx: |
3019eac3 | 21828 | case DW_FORM_GNU_addr_index: |
ac56253d | 21829 | { |
ac56253d TT |
21830 | gdb_byte *data; |
21831 | ||
98bfdba5 PA |
21832 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21833 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21834 | cu_header->addr_size, |
98bfdba5 | 21835 | TYPE_LENGTH (type)); |
ac56253d TT |
21836 | /* Symbols of this form are reasonably rare, so we just |
21837 | piggyback on the existing location code rather than writing | |
21838 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21839 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
a50264ba | 21840 | (*baton)->per_objfile = per_objfile; |
98bfdba5 PA |
21841 | (*baton)->per_cu = cu->per_cu; |
21842 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21843 | |
98bfdba5 | 21844 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21845 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21846 | (*baton)->data = data; |
ac56253d TT |
21847 | |
21848 | data[0] = DW_OP_addr; | |
21849 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21850 | byte_order, DW_ADDR (attr)); | |
21851 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21852 | } |
c906108c | 21853 | break; |
4ac36638 | 21854 | case DW_FORM_string: |
93b5768b | 21855 | case DW_FORM_strp: |
cf532bd1 | 21856 | case DW_FORM_strx: |
3019eac3 | 21857 | case DW_FORM_GNU_str_index: |
36586728 | 21858 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21859 | /* DW_STRING is already allocated on the objfile obstack, point |
21860 | directly to it. */ | |
d521ce57 | 21861 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21862 | break; |
c906108c SS |
21863 | case DW_FORM_block1: |
21864 | case DW_FORM_block2: | |
21865 | case DW_FORM_block4: | |
21866 | case DW_FORM_block: | |
2dc7f7b3 | 21867 | case DW_FORM_exprloc: |
0224619f | 21868 | case DW_FORM_data16: |
c906108c | 21869 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
21870 | if (TYPE_LENGTH (type) != blk->size) |
21871 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21872 | TYPE_LENGTH (type)); | |
21873 | *bytes = blk->data; | |
c906108c | 21874 | break; |
2df3850c JM |
21875 | |
21876 | /* The DW_AT_const_value attributes are supposed to carry the | |
21877 | symbol's value "represented as it would be on the target | |
21878 | architecture." By the time we get here, it's already been | |
21879 | converted to host endianness, so we just need to sign- or | |
21880 | zero-extend it as appropriate. */ | |
21881 | case DW_FORM_data1: | |
3aef2284 | 21882 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21883 | break; |
c906108c | 21884 | case DW_FORM_data2: |
3aef2284 | 21885 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21886 | break; |
c906108c | 21887 | case DW_FORM_data4: |
3aef2284 | 21888 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21889 | break; |
c906108c | 21890 | case DW_FORM_data8: |
3aef2284 | 21891 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21892 | break; |
21893 | ||
c906108c | 21894 | case DW_FORM_sdata: |
663c44ac | 21895 | case DW_FORM_implicit_const: |
98bfdba5 | 21896 | *value = DW_SND (attr); |
2df3850c JM |
21897 | break; |
21898 | ||
c906108c | 21899 | case DW_FORM_udata: |
98bfdba5 | 21900 | *value = DW_UNSND (attr); |
c906108c | 21901 | break; |
2df3850c | 21902 | |
c906108c | 21903 | default: |
b98664d3 | 21904 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21905 | dwarf_form_name (attr->form)); |
98bfdba5 | 21906 | *value = 0; |
c906108c SS |
21907 | break; |
21908 | } | |
21909 | } | |
21910 | ||
2df3850c | 21911 | |
98bfdba5 PA |
21912 | /* Copy constant value from an attribute to a symbol. */ |
21913 | ||
2df3850c | 21914 | static void |
ff39bb5e | 21915 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21916 | struct dwarf2_cu *cu) |
2df3850c | 21917 | { |
5e22e966 | 21918 | struct objfile *objfile = cu->per_objfile->objfile; |
12df843f | 21919 | LONGEST value; |
d521ce57 | 21920 | const gdb_byte *bytes; |
98bfdba5 | 21921 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21922 | |
98bfdba5 | 21923 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 21924 | sym->print_name (), |
98bfdba5 PA |
21925 | &objfile->objfile_obstack, cu, |
21926 | &value, &bytes, &baton); | |
2df3850c | 21927 | |
98bfdba5 PA |
21928 | if (baton != NULL) |
21929 | { | |
98bfdba5 | 21930 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21931 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21932 | } |
21933 | else if (bytes != NULL) | |
21934 | { | |
21935 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21936 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21937 | } |
21938 | else | |
21939 | { | |
21940 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21941 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21942 | } |
2df3850c JM |
21943 | } |
21944 | ||
c906108c SS |
21945 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21946 | ||
21947 | static struct type * | |
e7c27a73 | 21948 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21949 | { |
c906108c | 21950 | struct attribute *type_attr; |
c906108c | 21951 | |
e142c38c | 21952 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21953 | if (!type_attr) |
21954 | { | |
5e22e966 | 21955 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 21956 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21957 | return objfile_type (objfile)->builtin_void; |
c906108c | 21958 | } |
348e048f | 21959 | |
673bfd45 | 21960 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21961 | } |
21962 | ||
b4ba55a1 JB |
21963 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21964 | that allows to find parallel types through that information instead | |
21965 | of having to do expensive parallel lookups by type name. */ | |
21966 | ||
21967 | static int | |
21968 | need_gnat_info (struct dwarf2_cu *cu) | |
21969 | { | |
de4cb04a JB |
21970 | /* Assume that the Ada compiler was GNAT, which always produces |
21971 | the auxiliary information. */ | |
21972 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21973 | } |
21974 | ||
b4ba55a1 JB |
21975 | /* Return the auxiliary type of the die in question using its |
21976 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21977 | attribute is not present. */ | |
21978 | ||
21979 | static struct type * | |
21980 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21981 | { | |
b4ba55a1 | 21982 | struct attribute *type_attr; |
b4ba55a1 JB |
21983 | |
21984 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21985 | if (!type_attr) | |
21986 | return NULL; | |
21987 | ||
673bfd45 | 21988 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21989 | } |
21990 | ||
21991 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21992 | descriptive type accordingly. */ | |
21993 | ||
21994 | static void | |
21995 | set_descriptive_type (struct type *type, struct die_info *die, | |
21996 | struct dwarf2_cu *cu) | |
21997 | { | |
21998 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21999 | ||
22000 | if (descriptive_type) | |
22001 | { | |
22002 | ALLOCATE_GNAT_AUX_TYPE (type); | |
22003 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
22004 | } | |
22005 | } | |
22006 | ||
c906108c SS |
22007 | /* Return the containing type of the die in question using its |
22008 | DW_AT_containing_type attribute. */ | |
22009 | ||
22010 | static struct type * | |
e7c27a73 | 22011 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22012 | { |
c906108c | 22013 | struct attribute *type_attr; |
5e22e966 | 22014 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22015 | |
e142c38c | 22016 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
22017 | if (!type_attr) |
22018 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 22019 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 22020 | |
673bfd45 | 22021 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22022 | } |
22023 | ||
ac9ec31b DE |
22024 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
22025 | ||
22026 | static struct type * | |
22027 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
22028 | { | |
976ca316 SM |
22029 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22030 | struct objfile *objfile = per_objfile->objfile; | |
528e1572 | 22031 | char *saved; |
ac9ec31b | 22032 | |
528e1572 SM |
22033 | std::string message |
22034 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
22035 | objfile_name (objfile), | |
22036 | sect_offset_str (cu->header.sect_off), | |
22037 | sect_offset_str (die->sect_off)); | |
efba19b0 | 22038 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 22039 | |
19f392bc | 22040 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22041 | } |
22042 | ||
673bfd45 | 22043 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22044 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22045 | DW_AT_containing_type. | |
673bfd45 DE |
22046 | If there is no type substitute an error marker. */ |
22047 | ||
c906108c | 22048 | static struct type * |
ff39bb5e | 22049 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22050 | struct dwarf2_cu *cu) |
c906108c | 22051 | { |
976ca316 SM |
22052 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22053 | struct objfile *objfile = per_objfile->objfile; | |
f792889a DJ |
22054 | struct type *this_type; |
22055 | ||
ac9ec31b DE |
22056 | gdb_assert (attr->name == DW_AT_type |
22057 | || attr->name == DW_AT_GNAT_descriptive_type | |
22058 | || attr->name == DW_AT_containing_type); | |
22059 | ||
673bfd45 DE |
22060 | /* First see if we have it cached. */ |
22061 | ||
36586728 TT |
22062 | if (attr->form == DW_FORM_GNU_ref_alt) |
22063 | { | |
22064 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 22065 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 22066 | |
976ca316 SM |
22067 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, per_objfile); |
22068 | this_type = get_die_type_at_offset (sect_off, per_cu, per_objfile); | |
36586728 | 22069 | } |
cd6c91b4 | 22070 | else if (attr->form_is_ref ()) |
673bfd45 | 22071 | { |
0826b30a | 22072 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 22073 | |
976ca316 | 22074 | this_type = get_die_type_at_offset (sect_off, cu->per_cu, per_objfile); |
673bfd45 | 22075 | } |
55f1336d | 22076 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22077 | { |
ac9ec31b | 22078 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 22079 | |
ac9ec31b | 22080 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22081 | } |
22082 | else | |
22083 | { | |
b98664d3 | 22084 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22085 | " at %s [in module %s]"), |
22086 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22087 | objfile_name (objfile)); |
ac9ec31b | 22088 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22089 | } |
22090 | ||
22091 | /* If not cached we need to read it in. */ | |
22092 | ||
22093 | if (this_type == NULL) | |
22094 | { | |
ac9ec31b | 22095 | struct die_info *type_die = NULL; |
673bfd45 DE |
22096 | struct dwarf2_cu *type_cu = cu; |
22097 | ||
cd6c91b4 | 22098 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22099 | type_die = follow_die_ref (die, attr, &type_cu); |
22100 | if (type_die == NULL) | |
22101 | return build_error_marker_type (cu, die); | |
22102 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22103 | from an inter-CU reference and the type's CU got expanded before |
22104 | ours. */ | |
ac9ec31b | 22105 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22106 | } |
22107 | ||
22108 | /* If we still don't have a type use an error marker. */ | |
22109 | ||
22110 | if (this_type == NULL) | |
ac9ec31b | 22111 | return build_error_marker_type (cu, die); |
673bfd45 | 22112 | |
f792889a | 22113 | return this_type; |
c906108c SS |
22114 | } |
22115 | ||
673bfd45 DE |
22116 | /* Return the type in DIE, CU. |
22117 | Returns NULL for invalid types. | |
22118 | ||
02142a6c | 22119 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22120 | and only reads the die in if necessary. |
22121 | ||
22122 | NOTE: This can be called when reading in partial or full symbols. */ | |
22123 | ||
f792889a | 22124 | static struct type * |
e7c27a73 | 22125 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22126 | { |
f792889a DJ |
22127 | struct type *this_type; |
22128 | ||
22129 | this_type = get_die_type (die, cu); | |
22130 | if (this_type) | |
22131 | return this_type; | |
22132 | ||
673bfd45 DE |
22133 | return read_type_die_1 (die, cu); |
22134 | } | |
22135 | ||
22136 | /* Read the type in DIE, CU. | |
22137 | Returns NULL for invalid types. */ | |
22138 | ||
22139 | static struct type * | |
22140 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22141 | { | |
22142 | struct type *this_type = NULL; | |
22143 | ||
c906108c SS |
22144 | switch (die->tag) |
22145 | { | |
22146 | case DW_TAG_class_type: | |
680b30c7 | 22147 | case DW_TAG_interface_type: |
c906108c SS |
22148 | case DW_TAG_structure_type: |
22149 | case DW_TAG_union_type: | |
f792889a | 22150 | this_type = read_structure_type (die, cu); |
c906108c SS |
22151 | break; |
22152 | case DW_TAG_enumeration_type: | |
f792889a | 22153 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22154 | break; |
22155 | case DW_TAG_subprogram: | |
22156 | case DW_TAG_subroutine_type: | |
edb3359d | 22157 | case DW_TAG_inlined_subroutine: |
f792889a | 22158 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22159 | break; |
22160 | case DW_TAG_array_type: | |
f792889a | 22161 | this_type = read_array_type (die, cu); |
c906108c | 22162 | break; |
72019c9c | 22163 | case DW_TAG_set_type: |
f792889a | 22164 | this_type = read_set_type (die, cu); |
72019c9c | 22165 | break; |
c906108c | 22166 | case DW_TAG_pointer_type: |
f792889a | 22167 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22168 | break; |
22169 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22170 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22171 | break; |
22172 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22173 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22174 | break; | |
22175 | case DW_TAG_rvalue_reference_type: | |
22176 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22177 | break; |
22178 | case DW_TAG_const_type: | |
f792889a | 22179 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22180 | break; |
22181 | case DW_TAG_volatile_type: | |
f792889a | 22182 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22183 | break; |
06d66ee9 TT |
22184 | case DW_TAG_restrict_type: |
22185 | this_type = read_tag_restrict_type (die, cu); | |
22186 | break; | |
c906108c | 22187 | case DW_TAG_string_type: |
f792889a | 22188 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22189 | break; |
22190 | case DW_TAG_typedef: | |
f792889a | 22191 | this_type = read_typedef (die, cu); |
c906108c | 22192 | break; |
a02abb62 | 22193 | case DW_TAG_subrange_type: |
f792889a | 22194 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22195 | break; |
c906108c | 22196 | case DW_TAG_base_type: |
f792889a | 22197 | this_type = read_base_type (die, cu); |
c906108c | 22198 | break; |
81a17f79 | 22199 | case DW_TAG_unspecified_type: |
f792889a | 22200 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22201 | break; |
0114d602 DJ |
22202 | case DW_TAG_namespace: |
22203 | this_type = read_namespace_type (die, cu); | |
22204 | break; | |
f55ee35c JK |
22205 | case DW_TAG_module: |
22206 | this_type = read_module_type (die, cu); | |
22207 | break; | |
a2c2acaf MW |
22208 | case DW_TAG_atomic_type: |
22209 | this_type = read_tag_atomic_type (die, cu); | |
22210 | break; | |
c906108c | 22211 | default: |
b98664d3 | 22212 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 22213 | dwarf_tag_name (die->tag)); |
c906108c SS |
22214 | break; |
22215 | } | |
63d06c5c | 22216 | |
f792889a | 22217 | return this_type; |
63d06c5c DC |
22218 | } |
22219 | ||
abc72ce4 DE |
22220 | /* See if we can figure out if the class lives in a namespace. We do |
22221 | this by looking for a member function; its demangled name will | |
22222 | contain namespace info, if there is any. | |
22223 | Return the computed name or NULL. | |
22224 | Space for the result is allocated on the objfile's obstack. | |
22225 | This is the full-die version of guess_partial_die_structure_name. | |
22226 | In this case we know DIE has no useful parent. */ | |
22227 | ||
43816ebc | 22228 | static const char * |
abc72ce4 DE |
22229 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
22230 | { | |
22231 | struct die_info *spec_die; | |
22232 | struct dwarf2_cu *spec_cu; | |
22233 | struct die_info *child; | |
5e22e966 | 22234 | struct objfile *objfile = cu->per_objfile->objfile; |
abc72ce4 DE |
22235 | |
22236 | spec_cu = cu; | |
22237 | spec_die = die_specification (die, &spec_cu); | |
22238 | if (spec_die != NULL) | |
22239 | { | |
22240 | die = spec_die; | |
22241 | cu = spec_cu; | |
22242 | } | |
22243 | ||
22244 | for (child = die->child; | |
22245 | child != NULL; | |
22246 | child = child->sibling) | |
22247 | { | |
22248 | if (child->tag == DW_TAG_subprogram) | |
22249 | { | |
73b9be8b | 22250 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22251 | |
7d45c7c3 | 22252 | if (linkage_name != NULL) |
abc72ce4 | 22253 | { |
43816ebc | 22254 | gdb::unique_xmalloc_ptr<char> actual_name |
eff93b4d | 22255 | (cu->language_defn->class_name_from_physname (linkage_name)); |
43816ebc | 22256 | const char *name = NULL; |
abc72ce4 DE |
22257 | |
22258 | if (actual_name != NULL) | |
22259 | { | |
15d034d0 | 22260 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22261 | |
22262 | if (die_name != NULL | |
43816ebc | 22263 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
22264 | { |
22265 | /* Strip off the class name from the full name. | |
22266 | We want the prefix. */ | |
22267 | int die_name_len = strlen (die_name); | |
43816ebc TT |
22268 | int actual_name_len = strlen (actual_name.get ()); |
22269 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
22270 | |
22271 | /* Test for '::' as a sanity check. */ | |
22272 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 22273 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 22274 | name = obstack_strndup ( |
e3b94546 | 22275 | &objfile->per_bfd->storage_obstack, |
43816ebc | 22276 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22277 | } |
22278 | } | |
abc72ce4 DE |
22279 | return name; |
22280 | } | |
22281 | } | |
22282 | } | |
22283 | ||
22284 | return NULL; | |
22285 | } | |
22286 | ||
96408a79 SA |
22287 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22288 | prefix part in such case. See | |
22289 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22290 | ||
a121b7c1 | 22291 | static const char * |
96408a79 SA |
22292 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22293 | { | |
22294 | struct attribute *attr; | |
e6a959d6 | 22295 | const char *base; |
96408a79 SA |
22296 | |
22297 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22298 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22299 | return NULL; | |
22300 | ||
7d45c7c3 | 22301 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22302 | return NULL; |
22303 | ||
73b9be8b | 22304 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
22305 | if (attr == NULL || DW_STRING (attr) == NULL) |
22306 | return NULL; | |
22307 | ||
22308 | /* dwarf2_name had to be already called. */ | |
22309 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
22310 | ||
22311 | /* Strip the base name, keep any leading namespaces/classes. */ | |
22312 | base = strrchr (DW_STRING (attr), ':'); | |
22313 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
22314 | return ""; | |
22315 | ||
5e22e966 | 22316 | struct objfile *objfile = cu->per_objfile->objfile; |
0cf9feb9 TT |
22317 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
22318 | DW_STRING (attr), | |
22319 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
22320 | } |
22321 | ||
fdde2d81 | 22322 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22323 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22324 | |
0114d602 DJ |
22325 | For example, if we're within the method foo() in the following |
22326 | code: | |
22327 | ||
22328 | namespace N { | |
22329 | class C { | |
22330 | void foo () { | |
22331 | } | |
22332 | }; | |
22333 | } | |
22334 | ||
22335 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22336 | |
0d5cff50 | 22337 | static const char * |
e142c38c | 22338 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22339 | { |
976ca316 | 22340 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
0114d602 DJ |
22341 | struct die_info *parent, *spec_die; |
22342 | struct dwarf2_cu *spec_cu; | |
22343 | struct type *parent_type; | |
a121b7c1 | 22344 | const char *retval; |
63d06c5c | 22345 | |
9c37b5ae | 22346 | if (cu->language != language_cplus |
c44af4eb TT |
22347 | && cu->language != language_fortran && cu->language != language_d |
22348 | && cu->language != language_rust) | |
0114d602 DJ |
22349 | return ""; |
22350 | ||
96408a79 SA |
22351 | retval = anonymous_struct_prefix (die, cu); |
22352 | if (retval) | |
22353 | return retval; | |
22354 | ||
0114d602 DJ |
22355 | /* We have to be careful in the presence of DW_AT_specification. |
22356 | For example, with GCC 3.4, given the code | |
22357 | ||
22358 | namespace N { | |
22359 | void foo() { | |
22360 | // Definition of N::foo. | |
22361 | } | |
22362 | } | |
22363 | ||
22364 | then we'll have a tree of DIEs like this: | |
22365 | ||
22366 | 1: DW_TAG_compile_unit | |
22367 | 2: DW_TAG_namespace // N | |
22368 | 3: DW_TAG_subprogram // declaration of N::foo | |
22369 | 4: DW_TAG_subprogram // definition of N::foo | |
22370 | DW_AT_specification // refers to die #3 | |
22371 | ||
22372 | Thus, when processing die #4, we have to pretend that we're in | |
22373 | the context of its DW_AT_specification, namely the contex of die | |
22374 | #3. */ | |
22375 | spec_cu = cu; | |
22376 | spec_die = die_specification (die, &spec_cu); | |
22377 | if (spec_die == NULL) | |
22378 | parent = die->parent; | |
22379 | else | |
63d06c5c | 22380 | { |
0114d602 DJ |
22381 | parent = spec_die->parent; |
22382 | cu = spec_cu; | |
63d06c5c | 22383 | } |
0114d602 DJ |
22384 | |
22385 | if (parent == NULL) | |
22386 | return ""; | |
98bfdba5 PA |
22387 | else if (parent->building_fullname) |
22388 | { | |
22389 | const char *name; | |
22390 | const char *parent_name; | |
22391 | ||
22392 | /* It has been seen on RealView 2.2 built binaries, | |
22393 | DW_TAG_template_type_param types actually _defined_ as | |
22394 | children of the parent class: | |
22395 | ||
22396 | enum E {}; | |
22397 | template class <class Enum> Class{}; | |
22398 | Class<enum E> class_e; | |
22399 | ||
22400 | 1: DW_TAG_class_type (Class) | |
22401 | 2: DW_TAG_enumeration_type (E) | |
22402 | 3: DW_TAG_enumerator (enum1:0) | |
22403 | 3: DW_TAG_enumerator (enum2:1) | |
22404 | ... | |
22405 | 2: DW_TAG_template_type_param | |
22406 | DW_AT_type DW_FORM_ref_udata (E) | |
22407 | ||
22408 | Besides being broken debug info, it can put GDB into an | |
22409 | infinite loop. Consider: | |
22410 | ||
22411 | When we're building the full name for Class<E>, we'll start | |
22412 | at Class, and go look over its template type parameters, | |
22413 | finding E. We'll then try to build the full name of E, and | |
22414 | reach here. We're now trying to build the full name of E, | |
22415 | and look over the parent DIE for containing scope. In the | |
22416 | broken case, if we followed the parent DIE of E, we'd again | |
22417 | find Class, and once again go look at its template type | |
22418 | arguments, etc., etc. Simply don't consider such parent die | |
22419 | as source-level parent of this die (it can't be, the language | |
22420 | doesn't allow it), and break the loop here. */ | |
22421 | name = dwarf2_name (die, cu); | |
22422 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 22423 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
22424 | name ? name : "<unknown>", |
22425 | parent_name ? parent_name : "<unknown>"); | |
22426 | return ""; | |
22427 | } | |
63d06c5c | 22428 | else |
0114d602 DJ |
22429 | switch (parent->tag) |
22430 | { | |
63d06c5c | 22431 | case DW_TAG_namespace: |
0114d602 | 22432 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22433 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22434 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22435 | Work around this problem here. */ | |
22436 | if (cu->language == language_cplus | |
7d93a1e0 | 22437 | && strcmp (parent_type->name (), "::") == 0) |
acebe513 | 22438 | return ""; |
0114d602 | 22439 | /* We give a name to even anonymous namespaces. */ |
7d93a1e0 | 22440 | return parent_type->name (); |
63d06c5c | 22441 | case DW_TAG_class_type: |
680b30c7 | 22442 | case DW_TAG_interface_type: |
63d06c5c | 22443 | case DW_TAG_structure_type: |
0114d602 | 22444 | case DW_TAG_union_type: |
f55ee35c | 22445 | case DW_TAG_module: |
0114d602 | 22446 | parent_type = read_type_die (parent, cu); |
7d93a1e0 SM |
22447 | if (parent_type->name () != NULL) |
22448 | return parent_type->name (); | |
0114d602 DJ |
22449 | else |
22450 | /* An anonymous structure is only allowed non-static data | |
22451 | members; no typedefs, no member functions, et cetera. | |
22452 | So it does not need a prefix. */ | |
22453 | return ""; | |
abc72ce4 | 22454 | case DW_TAG_compile_unit: |
95554aad | 22455 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22456 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22457 | if (cu->language == language_cplus | |
976ca316 | 22458 | && !per_objfile->per_bfd->types.empty () |
abc72ce4 DE |
22459 | && die->child != NULL |
22460 | && (die->tag == DW_TAG_class_type | |
22461 | || die->tag == DW_TAG_structure_type | |
22462 | || die->tag == DW_TAG_union_type)) | |
22463 | { | |
43816ebc | 22464 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
22465 | if (name != NULL) |
22466 | return name; | |
22467 | } | |
22468 | return ""; | |
0a4b0913 AB |
22469 | case DW_TAG_subprogram: |
22470 | /* Nested subroutines in Fortran get a prefix with the name | |
22471 | of the parent's subroutine. */ | |
22472 | if (cu->language == language_fortran) | |
22473 | { | |
22474 | if ((die->tag == DW_TAG_subprogram) | |
22475 | && (dwarf2_name (parent, cu) != NULL)) | |
22476 | return dwarf2_name (parent, cu); | |
22477 | } | |
22478 | return determine_prefix (parent, cu); | |
3d567982 TT |
22479 | case DW_TAG_enumeration_type: |
22480 | parent_type = read_type_die (parent, cu); | |
22481 | if (TYPE_DECLARED_CLASS (parent_type)) | |
22482 | { | |
7d93a1e0 SM |
22483 | if (parent_type->name () != NULL) |
22484 | return parent_type->name (); | |
3d567982 TT |
22485 | return ""; |
22486 | } | |
22487 | /* Fall through. */ | |
63d06c5c | 22488 | default: |
8176b9b8 | 22489 | return determine_prefix (parent, cu); |
63d06c5c | 22490 | } |
63d06c5c DC |
22491 | } |
22492 | ||
3e43a32a MS |
22493 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22494 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22495 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22496 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22497 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22498 | |
f55ee35c | 22499 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22500 | |
22501 | static char * | |
f55ee35c JK |
22502 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
22503 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 22504 | { |
f55ee35c | 22505 | const char *lead = ""; |
5c315b68 | 22506 | const char *sep; |
63d06c5c | 22507 | |
3e43a32a MS |
22508 | if (suffix == NULL || suffix[0] == '\0' |
22509 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22510 | sep = ""; |
45280282 IB |
22511 | else if (cu->language == language_d) |
22512 | { | |
22513 | /* For D, the 'main' function could be defined in any module, but it | |
22514 | should never be prefixed. */ | |
22515 | if (strcmp (suffix, "D main") == 0) | |
22516 | { | |
22517 | prefix = ""; | |
22518 | sep = ""; | |
22519 | } | |
22520 | else | |
22521 | sep = "."; | |
22522 | } | |
f55ee35c JK |
22523 | else if (cu->language == language_fortran && physname) |
22524 | { | |
22525 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22526 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22527 | ||
22528 | lead = "__"; | |
22529 | sep = "_MOD_"; | |
22530 | } | |
987504bb JJ |
22531 | else |
22532 | sep = "::"; | |
63d06c5c | 22533 | |
6dd47d34 DE |
22534 | if (prefix == NULL) |
22535 | prefix = ""; | |
22536 | if (suffix == NULL) | |
22537 | suffix = ""; | |
22538 | ||
987504bb JJ |
22539 | if (obs == NULL) |
22540 | { | |
3e43a32a | 22541 | char *retval |
224c3ddb SM |
22542 | = ((char *) |
22543 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22544 | |
f55ee35c JK |
22545 | strcpy (retval, lead); |
22546 | strcat (retval, prefix); | |
6dd47d34 DE |
22547 | strcat (retval, sep); |
22548 | strcat (retval, suffix); | |
63d06c5c DC |
22549 | return retval; |
22550 | } | |
987504bb JJ |
22551 | else |
22552 | { | |
22553 | /* We have an obstack. */ | |
f55ee35c | 22554 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22555 | } |
63d06c5c DC |
22556 | } |
22557 | ||
71c25dea TT |
22558 | /* Get name of a die, return NULL if not found. */ |
22559 | ||
15d034d0 TT |
22560 | static const char * |
22561 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 22562 | struct objfile *objfile) |
71c25dea TT |
22563 | { |
22564 | if (name && cu->language == language_cplus) | |
22565 | { | |
596dc4ad TT |
22566 | gdb::unique_xmalloc_ptr<char> canon_name |
22567 | = cp_canonicalize_string (name); | |
71c25dea | 22568 | |
596dc4ad TT |
22569 | if (canon_name != nullptr) |
22570 | name = objfile->intern (canon_name.get ()); | |
71c25dea TT |
22571 | } |
22572 | ||
22573 | return name; | |
c906108c SS |
22574 | } |
22575 | ||
96553a0c DE |
22576 | /* Get name of a die, return NULL if not found. |
22577 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22578 | |
15d034d0 | 22579 | static const char * |
e142c38c | 22580 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22581 | { |
22582 | struct attribute *attr; | |
5e22e966 | 22583 | struct objfile *objfile = cu->per_objfile->objfile; |
9219021c | 22584 | |
e142c38c | 22585 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22586 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22587 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22588 | && die->tag != DW_TAG_class_type |
22589 | && die->tag != DW_TAG_interface_type | |
22590 | && die->tag != DW_TAG_structure_type | |
22591 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22592 | return NULL; |
22593 | ||
22594 | switch (die->tag) | |
22595 | { | |
22596 | case DW_TAG_compile_unit: | |
95554aad | 22597 | case DW_TAG_partial_unit: |
71c25dea TT |
22598 | /* Compilation units have a DW_AT_name that is a filename, not |
22599 | a source language identifier. */ | |
22600 | case DW_TAG_enumeration_type: | |
22601 | case DW_TAG_enumerator: | |
22602 | /* These tags always have simple identifiers already; no need | |
22603 | to canonicalize them. */ | |
22604 | return DW_STRING (attr); | |
907af001 | 22605 | |
96553a0c DE |
22606 | case DW_TAG_namespace: |
22607 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22608 | return DW_STRING (attr); | |
22609 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22610 | ||
907af001 UW |
22611 | case DW_TAG_class_type: |
22612 | case DW_TAG_interface_type: | |
22613 | case DW_TAG_structure_type: | |
22614 | case DW_TAG_union_type: | |
22615 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22616 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22617 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22618 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22619 | if (attr && DW_STRING (attr) |
61012eef GB |
22620 | && (startswith (DW_STRING (attr), "._") |
22621 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22622 | return NULL; |
53832f31 TT |
22623 | |
22624 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22625 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22626 | if (!attr || DW_STRING (attr) == NULL) | |
22627 | { | |
73b9be8b | 22628 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22629 | if (attr == NULL || DW_STRING (attr) == NULL) |
22630 | return NULL; | |
22631 | ||
df5c6c50 JK |
22632 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22633 | call for the same DIE. */ | |
22634 | if (!DW_STRING_IS_CANONICAL (attr)) | |
53832f31 | 22635 | { |
43816ebc TT |
22636 | gdb::unique_xmalloc_ptr<char> demangled |
22637 | (gdb_demangle (DW_STRING (attr), DMGL_TYPES)); | |
4f180d53 AT |
22638 | if (demangled == nullptr) |
22639 | return nullptr; | |
43816ebc | 22640 | |
be1e3d3e | 22641 | DW_STRING (attr) = objfile->intern (demangled.get ()); |
53832f31 | 22642 | DW_STRING_IS_CANONICAL (attr) = 1; |
53832f31 | 22643 | } |
67430cd0 TT |
22644 | |
22645 | /* Strip any leading namespaces/classes, keep only the base name. | |
22646 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22647 | const char *base = strrchr (DW_STRING (attr), ':'); | |
22648 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22649 | return &base[1]; | |
22650 | else | |
22651 | return DW_STRING (attr); | |
53832f31 | 22652 | } |
907af001 UW |
22653 | break; |
22654 | ||
71c25dea | 22655 | default: |
907af001 UW |
22656 | break; |
22657 | } | |
22658 | ||
22659 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22660 | { | |
be1e3d3e TT |
22661 | DW_STRING (attr) = dwarf2_canonicalize_name (DW_STRING (attr), cu, |
22662 | objfile); | |
907af001 | 22663 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22664 | } |
907af001 | 22665 | return DW_STRING (attr); |
9219021c DC |
22666 | } |
22667 | ||
22668 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22669 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22670 | containing the return value on output. */ | |
9219021c DC |
22671 | |
22672 | static struct die_info * | |
f2f0e013 | 22673 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22674 | { |
22675 | struct attribute *attr; | |
9219021c | 22676 | |
f2f0e013 | 22677 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22678 | if (attr == NULL) |
22679 | return NULL; | |
22680 | ||
f2f0e013 | 22681 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22682 | } |
22683 | ||
f9aca02d | 22684 | static void |
d97bc12b | 22685 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22686 | { |
22687 | unsigned int i; | |
22688 | ||
d97bc12b | 22689 | print_spaces (indent, f); |
9d8780f0 | 22690 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 22691 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 22692 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
22693 | |
22694 | if (die->parent != NULL) | |
22695 | { | |
22696 | print_spaces (indent, f); | |
9d8780f0 SM |
22697 | fprintf_unfiltered (f, " parent at offset: %s\n", |
22698 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
22699 | } |
22700 | ||
22701 | print_spaces (indent, f); | |
22702 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22703 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22704 | |
d97bc12b DE |
22705 | print_spaces (indent, f); |
22706 | fprintf_unfiltered (f, " attributes:\n"); | |
22707 | ||
c906108c SS |
22708 | for (i = 0; i < die->num_attrs; ++i) |
22709 | { | |
d97bc12b DE |
22710 | print_spaces (indent, f); |
22711 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22712 | dwarf_attr_name (die->attrs[i].name), |
22713 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22714 | |
c906108c SS |
22715 | switch (die->attrs[i].form) |
22716 | { | |
c906108c | 22717 | case DW_FORM_addr: |
336d760d | 22718 | case DW_FORM_addrx: |
3019eac3 | 22719 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22720 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22721 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22722 | break; |
22723 | case DW_FORM_block2: | |
22724 | case DW_FORM_block4: | |
22725 | case DW_FORM_block: | |
22726 | case DW_FORM_block1: | |
56eb65bd SP |
22727 | fprintf_unfiltered (f, "block: size %s", |
22728 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 22729 | break; |
2dc7f7b3 | 22730 | case DW_FORM_exprloc: |
56eb65bd SP |
22731 | fprintf_unfiltered (f, "expression: size %s", |
22732 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 22733 | break; |
0224619f JK |
22734 | case DW_FORM_data16: |
22735 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22736 | break; | |
4568ecf9 DE |
22737 | case DW_FORM_ref_addr: |
22738 | fprintf_unfiltered (f, "ref address: "); | |
22739 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22740 | break; | |
36586728 TT |
22741 | case DW_FORM_GNU_ref_alt: |
22742 | fprintf_unfiltered (f, "alt ref address: "); | |
22743 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22744 | break; | |
10b3939b DJ |
22745 | case DW_FORM_ref1: |
22746 | case DW_FORM_ref2: | |
22747 | case DW_FORM_ref4: | |
4568ecf9 DE |
22748 | case DW_FORM_ref8: |
22749 | case DW_FORM_ref_udata: | |
d97bc12b | 22750 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22751 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22752 | break; |
c906108c SS |
22753 | case DW_FORM_data1: |
22754 | case DW_FORM_data2: | |
22755 | case DW_FORM_data4: | |
ce5d95e1 | 22756 | case DW_FORM_data8: |
c906108c SS |
22757 | case DW_FORM_udata: |
22758 | case DW_FORM_sdata: | |
43bbcdc2 PH |
22759 | fprintf_unfiltered (f, "constant: %s", |
22760 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22761 | break; |
2dc7f7b3 TT |
22762 | case DW_FORM_sec_offset: |
22763 | fprintf_unfiltered (f, "section offset: %s", | |
22764 | pulongest (DW_UNSND (&die->attrs[i]))); | |
22765 | break; | |
55f1336d | 22766 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
22767 | fprintf_unfiltered (f, "signature: %s", |
22768 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 22769 | break; |
c906108c | 22770 | case DW_FORM_string: |
4bdf3d34 | 22771 | case DW_FORM_strp: |
43988095 | 22772 | case DW_FORM_line_strp: |
cf532bd1 | 22773 | case DW_FORM_strx: |
3019eac3 | 22774 | case DW_FORM_GNU_str_index: |
36586728 | 22775 | case DW_FORM_GNU_strp_alt: |
8285870a | 22776 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 22777 | DW_STRING (&die->attrs[i]) |
8285870a JK |
22778 | ? DW_STRING (&die->attrs[i]) : "", |
22779 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
22780 | break; |
22781 | case DW_FORM_flag: | |
22782 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 22783 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 22784 | else |
d97bc12b | 22785 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 22786 | break; |
2dc7f7b3 TT |
22787 | case DW_FORM_flag_present: |
22788 | fprintf_unfiltered (f, "flag: TRUE"); | |
22789 | break; | |
a8329558 | 22790 | case DW_FORM_indirect: |
0963b4bd MS |
22791 | /* The reader will have reduced the indirect form to |
22792 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 22793 | fprintf_unfiltered (f, |
3e43a32a | 22794 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 22795 | break; |
663c44ac JK |
22796 | case DW_FORM_implicit_const: |
22797 | fprintf_unfiltered (f, "constant: %s", | |
22798 | plongest (DW_SND (&die->attrs[i]))); | |
22799 | break; | |
c906108c | 22800 | default: |
d97bc12b | 22801 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22802 | die->attrs[i].form); |
d97bc12b | 22803 | break; |
c906108c | 22804 | } |
d97bc12b | 22805 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22806 | } |
22807 | } | |
22808 | ||
f9aca02d | 22809 | static void |
d97bc12b | 22810 | dump_die_for_error (struct die_info *die) |
c906108c | 22811 | { |
d97bc12b DE |
22812 | dump_die_shallow (gdb_stderr, 0, die); |
22813 | } | |
22814 | ||
22815 | static void | |
22816 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22817 | { | |
22818 | int indent = level * 4; | |
22819 | ||
22820 | gdb_assert (die != NULL); | |
22821 | ||
22822 | if (level >= max_level) | |
22823 | return; | |
22824 | ||
22825 | dump_die_shallow (f, indent, die); | |
22826 | ||
22827 | if (die->child != NULL) | |
c906108c | 22828 | { |
d97bc12b DE |
22829 | print_spaces (indent, f); |
22830 | fprintf_unfiltered (f, " Children:"); | |
22831 | if (level + 1 < max_level) | |
22832 | { | |
22833 | fprintf_unfiltered (f, "\n"); | |
22834 | dump_die_1 (f, level + 1, max_level, die->child); | |
22835 | } | |
22836 | else | |
22837 | { | |
3e43a32a MS |
22838 | fprintf_unfiltered (f, |
22839 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22840 | } |
22841 | } | |
22842 | ||
22843 | if (die->sibling != NULL && level > 0) | |
22844 | { | |
22845 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22846 | } |
22847 | } | |
22848 | ||
d97bc12b DE |
22849 | /* This is called from the pdie macro in gdbinit.in. |
22850 | It's not static so gcc will keep a copy callable from gdb. */ | |
22851 | ||
22852 | void | |
22853 | dump_die (struct die_info *die, int max_level) | |
22854 | { | |
22855 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22856 | } | |
22857 | ||
f9aca02d | 22858 | static void |
51545339 | 22859 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22860 | { |
51545339 | 22861 | void **slot; |
c906108c | 22862 | |
9c541725 PA |
22863 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22864 | to_underlying (die->sect_off), | |
b64f50a1 | 22865 | INSERT); |
51545339 DJ |
22866 | |
22867 | *slot = die; | |
c906108c SS |
22868 | } |
22869 | ||
348e048f DE |
22870 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22871 | On entry *REF_CU is the CU of SRC_DIE. | |
22872 | On exit *REF_CU is the CU of the result. */ | |
22873 | ||
22874 | static struct die_info * | |
ff39bb5e | 22875 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22876 | struct dwarf2_cu **ref_cu) |
22877 | { | |
22878 | struct die_info *die; | |
22879 | ||
cd6c91b4 | 22880 | if (attr->form_is_ref ()) |
348e048f | 22881 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22882 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22883 | die = follow_die_sig (src_die, attr, ref_cu); |
22884 | else | |
22885 | { | |
22886 | dump_die_for_error (src_die); | |
22887 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
5e22e966 | 22888 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
348e048f DE |
22889 | } |
22890 | ||
22891 | return die; | |
03dd20cc DJ |
22892 | } |
22893 | ||
5c631832 | 22894 | /* Follow reference OFFSET. |
673bfd45 DE |
22895 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22896 | On exit *REF_CU is the CU of the result. | |
22897 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22898 | |
f9aca02d | 22899 | static struct die_info * |
9c541725 | 22900 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22901 | struct dwarf2_cu **ref_cu) |
c906108c | 22902 | { |
10b3939b | 22903 | struct die_info temp_die; |
f2f0e013 | 22904 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
976ca316 | 22905 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10b3939b | 22906 | |
348e048f DE |
22907 | gdb_assert (cu->per_cu != NULL); |
22908 | ||
98bfdba5 PA |
22909 | target_cu = cu; |
22910 | ||
3019eac3 | 22911 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22912 | { |
22913 | /* .debug_types CUs cannot reference anything outside their CU. | |
22914 | If they need to, they have to reference a signatured type via | |
55f1336d | 22915 | DW_FORM_ref_sig8. */ |
4057dfde | 22916 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 22917 | return NULL; |
348e048f | 22918 | } |
36586728 | 22919 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 22920 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
22921 | { |
22922 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22923 | |
9c541725 | 22924 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
976ca316 | 22925 | per_objfile); |
03dd20cc DJ |
22926 | |
22927 | /* If necessary, add it to the queue and load its DIEs. */ | |
976ca316 SM |
22928 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
22929 | load_full_comp_unit (per_cu, per_objfile, false, cu->language); | |
03dd20cc | 22930 | |
976ca316 | 22931 | target_cu = per_objfile->get_cu (per_cu); |
10b3939b | 22932 | } |
98bfdba5 PA |
22933 | else if (cu->dies == NULL) |
22934 | { | |
22935 | /* We're loading full DIEs during partial symbol reading. */ | |
976ca316 SM |
22936 | gdb_assert (per_objfile->per_bfd->reading_partial_symbols); |
22937 | load_full_comp_unit (cu->per_cu, per_objfile, false, language_minimal); | |
98bfdba5 | 22938 | } |
c906108c | 22939 | |
f2f0e013 | 22940 | *ref_cu = target_cu; |
9c541725 | 22941 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
22942 | |
22943 | if (target_cu != cu) | |
22944 | target_cu->ancestor = cu; | |
22945 | ||
9a3c8263 | 22946 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
22947 | &temp_die, |
22948 | to_underlying (sect_off)); | |
5c631832 | 22949 | } |
10b3939b | 22950 | |
5c631832 JK |
22951 | /* Follow reference attribute ATTR of SRC_DIE. |
22952 | On entry *REF_CU is the CU of SRC_DIE. | |
22953 | On exit *REF_CU is the CU of the result. */ | |
22954 | ||
22955 | static struct die_info * | |
ff39bb5e | 22956 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
22957 | struct dwarf2_cu **ref_cu) |
22958 | { | |
0826b30a | 22959 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
22960 | struct dwarf2_cu *cu = *ref_cu; |
22961 | struct die_info *die; | |
22962 | ||
9c541725 | 22963 | die = follow_die_offset (sect_off, |
36586728 TT |
22964 | (attr->form == DW_FORM_GNU_ref_alt |
22965 | || cu->per_cu->is_dwz), | |
22966 | ref_cu); | |
5c631832 | 22967 | if (!die) |
9d8780f0 SM |
22968 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
22969 | "at %s [in module %s]"), | |
22970 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22971 | objfile_name (cu->per_objfile->objfile)); |
348e048f | 22972 | |
5c631832 JK |
22973 | return die; |
22974 | } | |
22975 | ||
d4c9a4f8 | 22976 | /* See read.h. */ |
5c631832 JK |
22977 | |
22978 | struct dwarf2_locexpr_baton | |
9c541725 | 22979 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 22980 | dwarf2_per_cu_data *per_cu, |
976ca316 | 22981 | dwarf2_per_objfile *per_objfile, |
041d9819 SM |
22982 | gdb::function_view<CORE_ADDR ()> get_frame_pc, |
22983 | bool resolve_abstract_p) | |
5c631832 | 22984 | { |
5c631832 JK |
22985 | struct die_info *die; |
22986 | struct attribute *attr; | |
22987 | struct dwarf2_locexpr_baton retval; | |
976ca316 | 22988 | struct objfile *objfile = per_objfile->objfile; |
8cf6f0b1 | 22989 | |
976ca316 | 22990 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 | 22991 | if (cu == nullptr) |
976ca316 | 22992 | cu = load_cu (per_cu, per_objfile, false); |
1b555f17 SM |
22993 | |
22994 | if (cu == nullptr) | |
cc12ce38 DE |
22995 | { |
22996 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22997 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22998 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22999 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23000 | } |
918dd910 | 23001 | |
9c541725 | 23002 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23003 | if (!die) |
9d8780f0 SM |
23004 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23005 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23006 | |
23007 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 23008 | if (!attr && resolve_abstract_p |
976ca316 SM |
23009 | && (per_objfile->per_bfd->abstract_to_concrete.find (die->sect_off) |
23010 | != per_objfile->per_bfd->abstract_to_concrete.end ())) | |
e4a62c65 | 23011 | { |
041d9819 | 23012 | CORE_ADDR pc = get_frame_pc (); |
b3b3bada | 23013 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 23014 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 23015 | |
3360b6e7 | 23016 | for (const auto &cand_off |
976ca316 | 23017 | : per_objfile->per_bfd->abstract_to_concrete[die->sect_off]) |
e4a62c65 | 23018 | { |
3360b6e7 TV |
23019 | struct dwarf2_cu *cand_cu = cu; |
23020 | struct die_info *cand | |
23021 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
23022 | if (!cand | |
23023 | || !cand->parent | |
e4a62c65 TV |
23024 | || cand->parent->tag != DW_TAG_subprogram) |
23025 | continue; | |
23026 | ||
23027 | CORE_ADDR pc_low, pc_high; | |
23028 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
23029 | if (pc_low == ((CORE_ADDR) -1)) |
23030 | continue; | |
23031 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
23032 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
23033 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
23034 | continue; |
23035 | ||
23036 | die = cand; | |
23037 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23038 | break; | |
23039 | } | |
23040 | } | |
23041 | ||
5c631832 JK |
23042 | if (!attr) |
23043 | { | |
e103e986 JK |
23044 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23045 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23046 | |
e103e986 | 23047 | retval.data = NULL; |
5c631832 JK |
23048 | retval.size = 0; |
23049 | } | |
cd6c91b4 | 23050 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
23051 | { |
23052 | struct dwarf2_loclist_baton loclist_baton; | |
041d9819 | 23053 | CORE_ADDR pc = get_frame_pc (); |
8cf6f0b1 TT |
23054 | size_t size; |
23055 | ||
23056 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23057 | ||
23058 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23059 | &size, pc); | |
23060 | retval.size = size; | |
23061 | } | |
5c631832 JK |
23062 | else |
23063 | { | |
4fc6c0d5 | 23064 | if (!attr->form_is_block ()) |
9d8780f0 | 23065 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23066 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23067 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
23068 | |
23069 | retval.data = DW_BLOCK (attr)->data; | |
23070 | retval.size = DW_BLOCK (attr)->size; | |
23071 | } | |
976ca316 | 23072 | retval.per_objfile = per_objfile; |
5c631832 | 23073 | retval.per_cu = cu->per_cu; |
918dd910 | 23074 | |
976ca316 | 23075 | per_objfile->age_comp_units (); |
918dd910 | 23076 | |
5c631832 | 23077 | return retval; |
348e048f DE |
23078 | } |
23079 | ||
d4c9a4f8 | 23080 | /* See read.h. */ |
8b9737bf TT |
23081 | |
23082 | struct dwarf2_locexpr_baton | |
23083 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 23084 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23085 | dwarf2_per_objfile *per_objfile, |
041d9819 | 23086 | gdb::function_view<CORE_ADDR ()> get_frame_pc) |
8b9737bf | 23087 | { |
9c541725 | 23088 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23089 | |
14095eb3 | 23090 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, per_objfile, |
041d9819 | 23091 | get_frame_pc); |
8b9737bf TT |
23092 | } |
23093 | ||
b6807d98 TT |
23094 | /* Write a constant of a given type as target-ordered bytes into |
23095 | OBSTACK. */ | |
23096 | ||
23097 | static const gdb_byte * | |
23098 | write_constant_as_bytes (struct obstack *obstack, | |
23099 | enum bfd_endian byte_order, | |
23100 | struct type *type, | |
23101 | ULONGEST value, | |
23102 | LONGEST *len) | |
23103 | { | |
23104 | gdb_byte *result; | |
23105 | ||
23106 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23107 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23108 | store_unsigned_integer (result, *len, byte_order, value); |
23109 | ||
23110 | return result; | |
23111 | } | |
23112 | ||
d4c9a4f8 | 23113 | /* See read.h. */ |
b6807d98 TT |
23114 | |
23115 | const gdb_byte * | |
9c541725 | 23116 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 | 23117 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23118 | dwarf2_per_objfile *per_objfile, |
d4c9a4f8 | 23119 | obstack *obstack, |
b6807d98 TT |
23120 | LONGEST *len) |
23121 | { | |
b6807d98 TT |
23122 | struct die_info *die; |
23123 | struct attribute *attr; | |
23124 | const gdb_byte *result = NULL; | |
23125 | struct type *type; | |
23126 | LONGEST value; | |
23127 | enum bfd_endian byte_order; | |
14095eb3 | 23128 | struct objfile *objfile = per_objfile->objfile; |
b6807d98 | 23129 | |
7188ed02 | 23130 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
23131 | if (cu == nullptr) |
23132 | cu = load_cu (per_cu, per_objfile, false); | |
23133 | ||
23134 | if (cu == nullptr) | |
cc12ce38 DE |
23135 | { |
23136 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23137 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23138 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23139 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23140 | } |
b6807d98 | 23141 | |
9c541725 | 23142 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23143 | if (!die) |
9d8780f0 SM |
23144 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23145 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23146 | |
23147 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23148 | if (attr == NULL) | |
23149 | return NULL; | |
23150 | ||
e3b94546 | 23151 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23152 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23153 | ||
23154 | switch (attr->form) | |
23155 | { | |
23156 | case DW_FORM_addr: | |
336d760d | 23157 | case DW_FORM_addrx: |
b6807d98 TT |
23158 | case DW_FORM_GNU_addr_index: |
23159 | { | |
23160 | gdb_byte *tem; | |
23161 | ||
23162 | *len = cu->header.addr_size; | |
224c3ddb | 23163 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23164 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
23165 | result = tem; | |
23166 | } | |
23167 | break; | |
23168 | case DW_FORM_string: | |
23169 | case DW_FORM_strp: | |
cf532bd1 | 23170 | case DW_FORM_strx: |
b6807d98 TT |
23171 | case DW_FORM_GNU_str_index: |
23172 | case DW_FORM_GNU_strp_alt: | |
23173 | /* DW_STRING is already allocated on the objfile obstack, point | |
23174 | directly to it. */ | |
23175 | result = (const gdb_byte *) DW_STRING (attr); | |
23176 | *len = strlen (DW_STRING (attr)); | |
23177 | break; | |
23178 | case DW_FORM_block1: | |
23179 | case DW_FORM_block2: | |
23180 | case DW_FORM_block4: | |
23181 | case DW_FORM_block: | |
23182 | case DW_FORM_exprloc: | |
0224619f | 23183 | case DW_FORM_data16: |
b6807d98 TT |
23184 | result = DW_BLOCK (attr)->data; |
23185 | *len = DW_BLOCK (attr)->size; | |
23186 | break; | |
23187 | ||
23188 | /* The DW_AT_const_value attributes are supposed to carry the | |
23189 | symbol's value "represented as it would be on the target | |
23190 | architecture." By the time we get here, it's already been | |
23191 | converted to host endianness, so we just need to sign- or | |
23192 | zero-extend it as appropriate. */ | |
23193 | case DW_FORM_data1: | |
23194 | type = die_type (die, cu); | |
23195 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23196 | if (result == NULL) | |
23197 | result = write_constant_as_bytes (obstack, byte_order, | |
23198 | type, value, len); | |
23199 | break; | |
23200 | case DW_FORM_data2: | |
23201 | type = die_type (die, cu); | |
23202 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23203 | if (result == NULL) | |
23204 | result = write_constant_as_bytes (obstack, byte_order, | |
23205 | type, value, len); | |
23206 | break; | |
23207 | case DW_FORM_data4: | |
23208 | type = die_type (die, cu); | |
23209 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23210 | if (result == NULL) | |
23211 | result = write_constant_as_bytes (obstack, byte_order, | |
23212 | type, value, len); | |
23213 | break; | |
23214 | case DW_FORM_data8: | |
23215 | type = die_type (die, cu); | |
23216 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23217 | if (result == NULL) | |
23218 | result = write_constant_as_bytes (obstack, byte_order, | |
23219 | type, value, len); | |
23220 | break; | |
23221 | ||
23222 | case DW_FORM_sdata: | |
663c44ac | 23223 | case DW_FORM_implicit_const: |
b6807d98 TT |
23224 | type = die_type (die, cu); |
23225 | result = write_constant_as_bytes (obstack, byte_order, | |
23226 | type, DW_SND (attr), len); | |
23227 | break; | |
23228 | ||
23229 | case DW_FORM_udata: | |
23230 | type = die_type (die, cu); | |
23231 | result = write_constant_as_bytes (obstack, byte_order, | |
23232 | type, DW_UNSND (attr), len); | |
23233 | break; | |
23234 | ||
23235 | default: | |
b98664d3 | 23236 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23237 | dwarf_form_name (attr->form)); |
23238 | break; | |
23239 | } | |
23240 | ||
23241 | return result; | |
23242 | } | |
23243 | ||
d4c9a4f8 | 23244 | /* See read.h. */ |
7942e96e AA |
23245 | |
23246 | struct type * | |
9c541725 | 23247 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
14095eb3 SM |
23248 | dwarf2_per_cu_data *per_cu, |
23249 | dwarf2_per_objfile *per_objfile) | |
7942e96e | 23250 | { |
7942e96e AA |
23251 | struct die_info *die; |
23252 | ||
7188ed02 | 23253 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
23254 | if (cu == nullptr) |
23255 | cu = load_cu (per_cu, per_objfile, false); | |
23256 | ||
23257 | if (cu == nullptr) | |
23258 | return nullptr; | |
7942e96e | 23259 | |
9c541725 | 23260 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23261 | if (!die) |
23262 | return NULL; | |
23263 | ||
23264 | return die_type (die, cu); | |
23265 | } | |
23266 | ||
8cb5117c | 23267 | /* See read.h. */ |
8a9b8146 TT |
23268 | |
23269 | struct type * | |
b64f50a1 | 23270 | dwarf2_get_die_type (cu_offset die_offset, |
aa66c379 SM |
23271 | dwarf2_per_cu_data *per_cu, |
23272 | dwarf2_per_objfile *per_objfile) | |
8a9b8146 | 23273 | { |
9c541725 | 23274 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
aa66c379 | 23275 | return get_die_type_at_offset (die_offset_sect, per_cu, per_objfile); |
8a9b8146 TT |
23276 | } |
23277 | ||
ac9ec31b | 23278 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23279 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23280 | On exit *REF_CU is the CU of the result. |
23281 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23282 | |
23283 | static struct die_info * | |
ac9ec31b DE |
23284 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23285 | struct dwarf2_cu **ref_cu) | |
348e048f | 23286 | { |
348e048f | 23287 | struct die_info temp_die; |
c24bdb02 | 23288 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f | 23289 | struct die_info *die; |
976ca316 | 23290 | dwarf2_per_objfile *per_objfile = (*ref_cu)->per_objfile; |
120ce1b5 | 23291 | |
348e048f | 23292 | |
ac9ec31b DE |
23293 | /* While it might be nice to assert sig_type->type == NULL here, |
23294 | we can get here for DW_AT_imported_declaration where we need | |
23295 | the DIE not the type. */ | |
348e048f DE |
23296 | |
23297 | /* If necessary, add it to the queue and load its DIEs. */ | |
23298 | ||
976ca316 | 23299 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, per_objfile, |
120ce1b5 | 23300 | language_minimal)) |
976ca316 | 23301 | read_signatured_type (sig_type, per_objfile); |
348e048f | 23302 | |
976ca316 | 23303 | sig_cu = per_objfile->get_cu (&sig_type->per_cu); |
69d751e3 | 23304 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23305 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23306 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23307 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23308 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23309 | if (die) |
23310 | { | |
796a7ff8 DE |
23311 | /* For .gdb_index version 7 keep track of included TUs. |
23312 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
976ca316 SM |
23313 | if (per_objfile->per_bfd->index_table != NULL |
23314 | && per_objfile->per_bfd->index_table->version <= 7) | |
796a7ff8 | 23315 | { |
ae640021 | 23316 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
23317 | } |
23318 | ||
348e048f | 23319 | *ref_cu = sig_cu; |
c24bdb02 KS |
23320 | if (sig_cu != cu) |
23321 | sig_cu->ancestor = cu; | |
23322 | ||
348e048f DE |
23323 | return die; |
23324 | } | |
23325 | ||
ac9ec31b DE |
23326 | return NULL; |
23327 | } | |
23328 | ||
23329 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23330 | On entry *REF_CU is the CU of SRC_DIE. | |
23331 | On exit *REF_CU is the CU of the result. | |
23332 | The result is the DIE of the type. | |
23333 | If the referenced type cannot be found an error is thrown. */ | |
23334 | ||
23335 | static struct die_info * | |
ff39bb5e | 23336 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23337 | struct dwarf2_cu **ref_cu) |
23338 | { | |
23339 | ULONGEST signature = DW_SIGNATURE (attr); | |
23340 | struct signatured_type *sig_type; | |
23341 | struct die_info *die; | |
23342 | ||
23343 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23344 | ||
a2ce51a0 | 23345 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23346 | /* sig_type will be NULL if the signatured type is missing from |
23347 | the debug info. */ | |
23348 | if (sig_type == NULL) | |
23349 | { | |
23350 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23351 | " from DIE at %s [in module %s]"), |
23352 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23353 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
23354 | } |
23355 | ||
23356 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23357 | if (die == NULL) | |
23358 | { | |
23359 | dump_die_for_error (src_die); | |
23360 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23361 | " from DIE at %s [in module %s]"), |
23362 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23363 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
23364 | } |
23365 | ||
23366 | return die; | |
23367 | } | |
23368 | ||
23369 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23370 | reading in and processing the type unit if necessary. */ | |
23371 | ||
23372 | static struct type * | |
23373 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23374 | struct dwarf2_cu *cu) | |
23375 | { | |
976ca316 | 23376 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ac9ec31b DE |
23377 | struct signatured_type *sig_type; |
23378 | struct dwarf2_cu *type_cu; | |
23379 | struct die_info *type_die; | |
23380 | struct type *type; | |
23381 | ||
a2ce51a0 | 23382 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23383 | /* sig_type will be NULL if the signatured type is missing from |
23384 | the debug info. */ | |
23385 | if (sig_type == NULL) | |
23386 | { | |
b98664d3 | 23387 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
23388 | " from DIE at %s [in module %s]"), |
23389 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 23390 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23391 | return build_error_marker_type (cu, die); |
23392 | } | |
23393 | ||
23394 | /* If we already know the type we're done. */ | |
976ca316 | 23395 | type = per_objfile->get_type_for_signatured_type (sig_type); |
e286671b TT |
23396 | if (type != nullptr) |
23397 | return type; | |
ac9ec31b DE |
23398 | |
23399 | type_cu = cu; | |
23400 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23401 | if (type_die != NULL) | |
23402 | { | |
23403 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23404 | is created. This is important, for example, because for c++ classes | |
23405 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23406 | type = read_type_die (type_die, type_cu); | |
23407 | if (type == NULL) | |
23408 | { | |
b98664d3 | 23409 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
23410 | " referenced from DIE at %s [in module %s]"), |
23411 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 23412 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23413 | type = build_error_marker_type (cu, die); |
23414 | } | |
23415 | } | |
23416 | else | |
23417 | { | |
b98664d3 | 23418 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
23419 | " from DIE at %s [in module %s]"), |
23420 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 23421 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23422 | type = build_error_marker_type (cu, die); |
23423 | } | |
e286671b | 23424 | |
976ca316 | 23425 | per_objfile->set_type_for_signatured_type (sig_type, type); |
ac9ec31b DE |
23426 | |
23427 | return type; | |
23428 | } | |
23429 | ||
23430 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23431 | reading in and processing the type unit if necessary. */ | |
23432 | ||
23433 | static struct type * | |
ff39bb5e | 23434 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23435 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23436 | { |
23437 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 23438 | if (attr->form_is_ref ()) |
ac9ec31b DE |
23439 | { |
23440 | struct dwarf2_cu *type_cu = cu; | |
23441 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23442 | ||
23443 | return read_type_die (type_die, type_cu); | |
23444 | } | |
23445 | else if (attr->form == DW_FORM_ref_sig8) | |
23446 | { | |
23447 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
23448 | } | |
23449 | else | |
23450 | { | |
976ca316 | 23451 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 23452 | |
b98664d3 | 23453 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
23454 | " at %s [in module %s]"), |
23455 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
976ca316 | 23456 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23457 | return build_error_marker_type (cu, die); |
23458 | } | |
348e048f DE |
23459 | } |
23460 | ||
e5fe5e75 | 23461 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23462 | |
23463 | static void | |
ab432490 SM |
23464 | load_full_type_unit (dwarf2_per_cu_data *per_cu, |
23465 | dwarf2_per_objfile *per_objfile) | |
348e048f | 23466 | { |
52dc124a | 23467 | struct signatured_type *sig_type; |
348e048f | 23468 | |
f4dc4d17 | 23469 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 23470 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 23471 | |
6721b2ec DE |
23472 | /* We have the per_cu, but we need the signatured_type. |
23473 | Fortunately this is an easy translation. */ | |
23474 | gdb_assert (per_cu->is_debug_types); | |
23475 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23476 | |
7188ed02 | 23477 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 23478 | |
ab432490 | 23479 | read_signatured_type (sig_type, per_objfile); |
348e048f | 23480 | |
7188ed02 | 23481 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); |
348e048f DE |
23482 | } |
23483 | ||
3019eac3 DE |
23484 | /* Read in a signatured type and build its CU and DIEs. |
23485 | If the type is a stub for the real type in a DWO file, | |
23486 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23487 | |
23488 | static void | |
ab432490 SM |
23489 | read_signatured_type (signatured_type *sig_type, |
23490 | dwarf2_per_objfile *per_objfile) | |
dee91e82 DE |
23491 | { |
23492 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 23493 | |
3019eac3 | 23494 | gdb_assert (per_cu->is_debug_types); |
7188ed02 | 23495 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 23496 | |
2e671100 | 23497 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
23498 | |
23499 | if (!reader.dummy_p) | |
23500 | { | |
23501 | struct dwarf2_cu *cu = reader.cu; | |
23502 | const gdb_byte *info_ptr = reader.info_ptr; | |
23503 | ||
23504 | gdb_assert (cu->die_hash == NULL); | |
23505 | cu->die_hash = | |
23506 | htab_create_alloc_ex (cu->header.length / 12, | |
23507 | die_hash, | |
23508 | die_eq, | |
23509 | NULL, | |
23510 | &cu->comp_unit_obstack, | |
23511 | hashtab_obstack_allocate, | |
23512 | dummy_obstack_deallocate); | |
23513 | ||
3e225074 | 23514 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
23515 | reader.comp_unit_die->child |
23516 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
23517 | reader.comp_unit_die); | |
23518 | cu->dies = reader.comp_unit_die; | |
23519 | /* comp_unit_die is not stored in die_hash, no need. */ | |
23520 | ||
23521 | /* We try not to read any attributes in this function, because | |
23522 | not all CUs needed for references have been loaded yet, and | |
23523 | symbol table processing isn't initialized. But we have to | |
23524 | set the CU language, or we won't be able to build types | |
23525 | correctly. Similarly, if we do not read the producer, we can | |
23526 | not apply producer-specific interpretation. */ | |
23527 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
23528 | |
23529 | reader.keep (); | |
c0ab21c2 TT |
23530 | } |
23531 | ||
7ee85ab1 | 23532 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
23533 | } |
23534 | ||
c906108c SS |
23535 | /* Decode simple location descriptions. |
23536 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
23537 | the location and return the value. If COMPUTED is non-null, it is |
23538 | set to true to indicate that decoding was successful, and false | |
23539 | otherwise. If COMPUTED is null, then this function may emit a | |
23540 | complaint. */ | |
c906108c SS |
23541 | |
23542 | static CORE_ADDR | |
7d79de9a | 23543 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 23544 | { |
5e22e966 | 23545 | struct objfile *objfile = cu->per_objfile->objfile; |
56eb65bd SP |
23546 | size_t i; |
23547 | size_t size = blk->size; | |
d521ce57 | 23548 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
23549 | CORE_ADDR stack[64]; |
23550 | int stacki; | |
23551 | unsigned int bytes_read, unsnd; | |
23552 | gdb_byte op; | |
c906108c | 23553 | |
7d79de9a TT |
23554 | if (computed != nullptr) |
23555 | *computed = false; | |
23556 | ||
21ae7a4d JK |
23557 | i = 0; |
23558 | stacki = 0; | |
23559 | stack[stacki] = 0; | |
23560 | stack[++stacki] = 0; | |
23561 | ||
23562 | while (i < size) | |
23563 | { | |
23564 | op = data[i++]; | |
23565 | switch (op) | |
23566 | { | |
23567 | case DW_OP_lit0: | |
23568 | case DW_OP_lit1: | |
23569 | case DW_OP_lit2: | |
23570 | case DW_OP_lit3: | |
23571 | case DW_OP_lit4: | |
23572 | case DW_OP_lit5: | |
23573 | case DW_OP_lit6: | |
23574 | case DW_OP_lit7: | |
23575 | case DW_OP_lit8: | |
23576 | case DW_OP_lit9: | |
23577 | case DW_OP_lit10: | |
23578 | case DW_OP_lit11: | |
23579 | case DW_OP_lit12: | |
23580 | case DW_OP_lit13: | |
23581 | case DW_OP_lit14: | |
23582 | case DW_OP_lit15: | |
23583 | case DW_OP_lit16: | |
23584 | case DW_OP_lit17: | |
23585 | case DW_OP_lit18: | |
23586 | case DW_OP_lit19: | |
23587 | case DW_OP_lit20: | |
23588 | case DW_OP_lit21: | |
23589 | case DW_OP_lit22: | |
23590 | case DW_OP_lit23: | |
23591 | case DW_OP_lit24: | |
23592 | case DW_OP_lit25: | |
23593 | case DW_OP_lit26: | |
23594 | case DW_OP_lit27: | |
23595 | case DW_OP_lit28: | |
23596 | case DW_OP_lit29: | |
23597 | case DW_OP_lit30: | |
23598 | case DW_OP_lit31: | |
23599 | stack[++stacki] = op - DW_OP_lit0; | |
23600 | break; | |
f1bea926 | 23601 | |
21ae7a4d JK |
23602 | case DW_OP_reg0: |
23603 | case DW_OP_reg1: | |
23604 | case DW_OP_reg2: | |
23605 | case DW_OP_reg3: | |
23606 | case DW_OP_reg4: | |
23607 | case DW_OP_reg5: | |
23608 | case DW_OP_reg6: | |
23609 | case DW_OP_reg7: | |
23610 | case DW_OP_reg8: | |
23611 | case DW_OP_reg9: | |
23612 | case DW_OP_reg10: | |
23613 | case DW_OP_reg11: | |
23614 | case DW_OP_reg12: | |
23615 | case DW_OP_reg13: | |
23616 | case DW_OP_reg14: | |
23617 | case DW_OP_reg15: | |
23618 | case DW_OP_reg16: | |
23619 | case DW_OP_reg17: | |
23620 | case DW_OP_reg18: | |
23621 | case DW_OP_reg19: | |
23622 | case DW_OP_reg20: | |
23623 | case DW_OP_reg21: | |
23624 | case DW_OP_reg22: | |
23625 | case DW_OP_reg23: | |
23626 | case DW_OP_reg24: | |
23627 | case DW_OP_reg25: | |
23628 | case DW_OP_reg26: | |
23629 | case DW_OP_reg27: | |
23630 | case DW_OP_reg28: | |
23631 | case DW_OP_reg29: | |
23632 | case DW_OP_reg30: | |
23633 | case DW_OP_reg31: | |
23634 | stack[++stacki] = op - DW_OP_reg0; | |
23635 | if (i < size) | |
7d79de9a TT |
23636 | { |
23637 | if (computed == nullptr) | |
23638 | dwarf2_complex_location_expr_complaint (); | |
23639 | else | |
23640 | return 0; | |
23641 | } | |
21ae7a4d | 23642 | break; |
c906108c | 23643 | |
21ae7a4d JK |
23644 | case DW_OP_regx: |
23645 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
23646 | i += bytes_read; | |
23647 | stack[++stacki] = unsnd; | |
23648 | if (i < size) | |
7d79de9a TT |
23649 | { |
23650 | if (computed == nullptr) | |
23651 | dwarf2_complex_location_expr_complaint (); | |
23652 | else | |
23653 | return 0; | |
23654 | } | |
21ae7a4d | 23655 | break; |
c906108c | 23656 | |
21ae7a4d | 23657 | case DW_OP_addr: |
c8a7a66f TT |
23658 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
23659 | &bytes_read); | |
21ae7a4d JK |
23660 | i += bytes_read; |
23661 | break; | |
d53d4ac5 | 23662 | |
21ae7a4d JK |
23663 | case DW_OP_const1u: |
23664 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
23665 | i += 1; | |
23666 | break; | |
23667 | ||
23668 | case DW_OP_const1s: | |
23669 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
23670 | i += 1; | |
23671 | break; | |
23672 | ||
23673 | case DW_OP_const2u: | |
23674 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23675 | i += 2; | |
23676 | break; | |
23677 | ||
23678 | case DW_OP_const2s: | |
23679 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
23680 | i += 2; | |
23681 | break; | |
d53d4ac5 | 23682 | |
21ae7a4d JK |
23683 | case DW_OP_const4u: |
23684 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
23685 | i += 4; | |
23686 | break; | |
23687 | ||
23688 | case DW_OP_const4s: | |
23689 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
23690 | i += 4; | |
23691 | break; | |
23692 | ||
585861ea JK |
23693 | case DW_OP_const8u: |
23694 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
23695 | i += 8; | |
23696 | break; | |
23697 | ||
21ae7a4d JK |
23698 | case DW_OP_constu: |
23699 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
23700 | &bytes_read); | |
23701 | i += bytes_read; | |
23702 | break; | |
23703 | ||
23704 | case DW_OP_consts: | |
23705 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
23706 | i += bytes_read; | |
23707 | break; | |
23708 | ||
23709 | case DW_OP_dup: | |
23710 | stack[stacki + 1] = stack[stacki]; | |
23711 | stacki++; | |
23712 | break; | |
23713 | ||
23714 | case DW_OP_plus: | |
23715 | stack[stacki - 1] += stack[stacki]; | |
23716 | stacki--; | |
23717 | break; | |
23718 | ||
23719 | case DW_OP_plus_uconst: | |
23720 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
23721 | &bytes_read); | |
23722 | i += bytes_read; | |
23723 | break; | |
23724 | ||
23725 | case DW_OP_minus: | |
23726 | stack[stacki - 1] -= stack[stacki]; | |
23727 | stacki--; | |
23728 | break; | |
23729 | ||
23730 | case DW_OP_deref: | |
23731 | /* If we're not the last op, then we definitely can't encode | |
23732 | this using GDB's address_class enum. This is valid for partial | |
23733 | global symbols, although the variable's address will be bogus | |
23734 | in the psymtab. */ | |
23735 | if (i < size) | |
7d79de9a TT |
23736 | { |
23737 | if (computed == nullptr) | |
23738 | dwarf2_complex_location_expr_complaint (); | |
23739 | else | |
23740 | return 0; | |
23741 | } | |
21ae7a4d JK |
23742 | break; |
23743 | ||
23744 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 23745 | case DW_OP_form_tls_address: |
21ae7a4d JK |
23746 | /* The top of the stack has the offset from the beginning |
23747 | of the thread control block at which the variable is located. */ | |
23748 | /* Nothing should follow this operator, so the top of stack would | |
23749 | be returned. */ | |
23750 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
23751 | address will be bogus in the psymtab. Make it always at least |
23752 | non-zero to not look as a variable garbage collected by linker | |
23753 | which have DW_OP_addr 0. */ | |
21ae7a4d | 23754 | if (i < size) |
7d79de9a TT |
23755 | { |
23756 | if (computed == nullptr) | |
23757 | dwarf2_complex_location_expr_complaint (); | |
23758 | else | |
23759 | return 0; | |
23760 | } | |
585861ea | 23761 | stack[stacki]++; |
21ae7a4d JK |
23762 | break; |
23763 | ||
23764 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
23765 | if (computed != nullptr) |
23766 | return 0; | |
21ae7a4d JK |
23767 | break; |
23768 | ||
336d760d | 23769 | case DW_OP_addrx: |
3019eac3 | 23770 | case DW_OP_GNU_addr_index: |
49f6c839 | 23771 | case DW_OP_GNU_const_index: |
3019eac3 DE |
23772 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
23773 | &bytes_read); | |
23774 | i += bytes_read; | |
23775 | break; | |
23776 | ||
21ae7a4d | 23777 | default: |
7d79de9a TT |
23778 | if (computed == nullptr) |
23779 | { | |
23780 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 23781 | |
7d79de9a TT |
23782 | if (name) |
23783 | complaint (_("unsupported stack op: '%s'"), | |
23784 | name); | |
23785 | else | |
23786 | complaint (_("unsupported stack op: '%02x'"), | |
23787 | op); | |
23788 | } | |
21ae7a4d JK |
23789 | |
23790 | return (stack[stacki]); | |
d53d4ac5 | 23791 | } |
3c6e0cb3 | 23792 | |
21ae7a4d JK |
23793 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23794 | outside of the allocated space. Also enforce minimum>0. */ | |
23795 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23796 | { | |
7d79de9a TT |
23797 | if (computed == nullptr) |
23798 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
23799 | return 0; |
23800 | } | |
23801 | ||
23802 | if (stacki <= 0) | |
23803 | { | |
7d79de9a TT |
23804 | if (computed == nullptr) |
23805 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
23806 | return 0; |
23807 | } | |
23808 | } | |
7d79de9a TT |
23809 | |
23810 | if (computed != nullptr) | |
23811 | *computed = true; | |
21ae7a4d | 23812 | return (stack[stacki]); |
c906108c SS |
23813 | } |
23814 | ||
23815 | /* memory allocation interface */ | |
23816 | ||
c906108c | 23817 | static struct dwarf_block * |
7b5a2f43 | 23818 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23819 | { |
8d749320 | 23820 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23821 | } |
23822 | ||
c906108c | 23823 | static struct die_info * |
b60c80d6 | 23824 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23825 | { |
23826 | struct die_info *die; | |
b60c80d6 DJ |
23827 | size_t size = sizeof (struct die_info); |
23828 | ||
23829 | if (num_attrs > 1) | |
23830 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23831 | |
b60c80d6 | 23832 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23833 | memset (die, 0, sizeof (struct die_info)); |
23834 | return (die); | |
23835 | } | |
2e276125 JB |
23836 | |
23837 | \f | |
a036ba48 | 23838 | |
c90ec28a | 23839 | /* Macro support. */ |
cf2c3c16 | 23840 | |
9eac9650 TT |
23841 | /* An overload of dwarf_decode_macros that finds the correct section |
23842 | and ensures it is read in before calling the other overload. */ | |
23843 | ||
23844 | static void | |
23845 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
23846 | int section_is_gnu) | |
23847 | { | |
976ca316 SM |
23848 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
23849 | struct objfile *objfile = per_objfile->objfile; | |
5a0e026f | 23850 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
23851 | unsigned int offset_size = cu->header.offset_size; |
23852 | struct dwarf2_section_info *section; | |
23853 | const char *section_name; | |
23854 | ||
23855 | if (cu->dwo_unit != nullptr) | |
23856 | { | |
23857 | if (section_is_gnu) | |
23858 | { | |
23859 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
23860 | section_name = ".debug_macro.dwo"; | |
23861 | } | |
23862 | else | |
23863 | { | |
23864 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
23865 | section_name = ".debug_macinfo.dwo"; | |
23866 | } | |
23867 | } | |
23868 | else | |
23869 | { | |
23870 | if (section_is_gnu) | |
23871 | { | |
976ca316 | 23872 | section = &per_objfile->per_bfd->macro; |
9eac9650 TT |
23873 | section_name = ".debug_macro"; |
23874 | } | |
23875 | else | |
23876 | { | |
976ca316 | 23877 | section = &per_objfile->per_bfd->macinfo; |
9eac9650 TT |
23878 | section_name = ".debug_macinfo"; |
23879 | } | |
23880 | } | |
23881 | ||
23882 | section->read (objfile); | |
23883 | if (section->buffer == nullptr) | |
23884 | { | |
23885 | complaint (_("missing %s section"), section_name); | |
23886 | return; | |
23887 | } | |
23888 | ||
23889 | buildsym_compunit *builder = cu->get_builder (); | |
23890 | ||
976ca316 | 23891 | dwarf_decode_macros (per_objfile, builder, section, lh, |
9eac9650 TT |
23892 | offset_size, offset, section_is_gnu); |
23893 | } | |
23894 | ||
3019eac3 DE |
23895 | /* Return the .debug_loc section to use for CU. |
23896 | For DWO files use .debug_loc.dwo. */ | |
23897 | ||
23898 | static struct dwarf2_section_info * | |
23899 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
23900 | { | |
976ca316 | 23901 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 23902 | |
3019eac3 | 23903 | if (cu->dwo_unit) |
43988095 JK |
23904 | { |
23905 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 23906 | |
43988095 JK |
23907 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
23908 | } | |
976ca316 SM |
23909 | return (cu->header.version >= 5 ? &per_objfile->per_bfd->loclists |
23910 | : &per_objfile->per_bfd->loc); | |
3019eac3 DE |
23911 | } |
23912 | ||
d0ce17d8 CT |
23913 | /* Return the .debug_rnglists section to use for CU. */ |
23914 | static struct dwarf2_section_info * | |
23915 | cu_debug_rnglists_section (struct dwarf2_cu *cu, dwarf_tag tag) | |
23916 | { | |
23917 | if (cu->header.version < 5) | |
23918 | error (_(".debug_rnglists section cannot be used in DWARF %d"), | |
23919 | cu->header.version); | |
23920 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
23921 | ||
23922 | /* Make sure we read the .debug_rnglists section from the file that | |
23923 | contains the DW_AT_ranges attribute we are reading. Normally that | |
23924 | would be the .dwo file, if there is one. However for DW_TAG_compile_unit | |
23925 | or DW_TAG_skeleton unit, we always want to read from objfile/linked | |
23926 | program. */ | |
23927 | if (cu->dwo_unit != nullptr | |
23928 | && tag != DW_TAG_compile_unit | |
23929 | && tag != DW_TAG_skeleton_unit) | |
23930 | { | |
23931 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
23932 | ||
23933 | if (sections->rnglists.size > 0) | |
23934 | return §ions->rnglists; | |
23935 | else | |
23936 | error (_(".debug_rnglists section is missing from .dwo file.")); | |
23937 | } | |
23938 | return &dwarf2_per_objfile->per_bfd->rnglists; | |
23939 | } | |
23940 | ||
8cf6f0b1 TT |
23941 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
23942 | ||
23943 | static void | |
23944 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
23945 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 23946 | const struct attribute *attr) |
8cf6f0b1 | 23947 | { |
976ca316 | 23948 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 DE |
23949 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
23950 | ||
976ca316 | 23951 | section->read (per_objfile->objfile); |
8cf6f0b1 | 23952 | |
976ca316 | 23953 | baton->per_objfile = per_objfile; |
8cf6f0b1 TT |
23954 | baton->per_cu = cu->per_cu; |
23955 | gdb_assert (baton->per_cu); | |
23956 | /* We don't know how long the location list is, but make sure we | |
23957 | don't run off the edge of the section. */ | |
3019eac3 DE |
23958 | baton->size = section->size - DW_UNSND (attr); |
23959 | baton->data = section->buffer + DW_UNSND (attr); | |
2b24b6e4 TT |
23960 | if (cu->base_address.has_value ()) |
23961 | baton->base_address = *cu->base_address; | |
23962 | else | |
23963 | baton->base_address = 0; | |
f664829e | 23964 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
23965 | } |
23966 | ||
4c2df51b | 23967 | static void |
ff39bb5e | 23968 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 23969 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 23970 | { |
976ca316 SM |
23971 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
23972 | struct objfile *objfile = per_objfile->objfile; | |
3019eac3 | 23973 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 23974 | |
cd6c91b4 | 23975 | if (attr->form_is_section_offset () |
3019eac3 | 23976 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
23977 | the section. If so, fall through to the complaint in the |
23978 | other branch. */ | |
2c7d5afc | 23979 | && DW_UNSND (attr) < section->get_size (objfile)) |
4c2df51b | 23980 | { |
0d53c4c4 | 23981 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 23982 | |
8d749320 | 23983 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 23984 | |
8cf6f0b1 | 23985 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 23986 | |
2b24b6e4 | 23987 | if (!cu->base_address.has_value ()) |
b98664d3 | 23988 | complaint (_("Location list used without " |
3e43a32a | 23989 | "specifying the CU base address.")); |
4c2df51b | 23990 | |
f1e6e072 TT |
23991 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
23992 | ? dwarf2_loclist_block_index | |
23993 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
23994 | SYMBOL_LOCATION_BATON (sym) = baton; |
23995 | } | |
23996 | else | |
23997 | { | |
23998 | struct dwarf2_locexpr_baton *baton; | |
23999 | ||
8d749320 | 24000 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
976ca316 | 24001 | baton->per_objfile = per_objfile; |
ae0d2f24 UW |
24002 | baton->per_cu = cu->per_cu; |
24003 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 24004 | |
4fc6c0d5 | 24005 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
24006 | { |
24007 | /* Note that we're just copying the block's data pointer | |
24008 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24009 | info_buffer for SYM's objfile; right now we never release |
24010 | that buffer, but when we do clean up properly this may | |
24011 | need to change. */ | |
0d53c4c4 DJ |
24012 | baton->size = DW_BLOCK (attr)->size; |
24013 | baton->data = DW_BLOCK (attr)->data; | |
24014 | } | |
24015 | else | |
24016 | { | |
24017 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 24018 | sym->natural_name ()); |
0d53c4c4 | 24019 | baton->size = 0; |
0d53c4c4 | 24020 | } |
6e70227d | 24021 | |
f1e6e072 TT |
24022 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24023 | ? dwarf2_locexpr_block_index | |
24024 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24025 | SYMBOL_LOCATION_BATON (sym) = baton; |
24026 | } | |
4c2df51b | 24027 | } |
6502dd73 | 24028 | |
2e6a9f79 | 24029 | /* See read.h. */ |
96408a79 | 24030 | |
2e6a9f79 SM |
24031 | const comp_unit_head * |
24032 | dwarf2_per_cu_data::get_header () const | |
96408a79 | 24033 | { |
2e6a9f79 SM |
24034 | if (!m_header_read_in) |
24035 | { | |
24036 | const gdb_byte *info_ptr | |
24037 | = this->section->buffer + to_underlying (this->sect_off); | |
96408a79 | 24038 | |
2e6a9f79 | 24039 | memset (&m_header, 0, sizeof (m_header)); |
96408a79 | 24040 | |
2e6a9f79 SM |
24041 | read_comp_unit_head (&m_header, info_ptr, this->section, |
24042 | rcuh_kind::COMPILE); | |
24043 | } | |
96408a79 | 24044 | |
2e6a9f79 | 24045 | return &m_header; |
96408a79 SA |
24046 | } |
24047 | ||
09ba997f | 24048 | /* See read.h. */ |
ae0d2f24 | 24049 | |
98714339 | 24050 | int |
09ba997f | 24051 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 24052 | { |
2e6a9f79 | 24053 | return this->get_header ()->addr_size; |
ae0d2f24 UW |
24054 | } |
24055 | ||
09ba997f | 24056 | /* See read.h. */ |
9eae7c52 TT |
24057 | |
24058 | int | |
09ba997f | 24059 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 24060 | { |
2e6a9f79 | 24061 | return this->get_header ()->offset_size; |
96408a79 SA |
24062 | } |
24063 | ||
09ba997f | 24064 | /* See read.h. */ |
96408a79 SA |
24065 | |
24066 | int | |
09ba997f | 24067 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 | 24068 | { |
2e6a9f79 | 24069 | const comp_unit_head *header = this->get_header (); |
96408a79 | 24070 | |
2e6a9f79 SM |
24071 | if (header->version == 2) |
24072 | return header->addr_size; | |
96408a79 | 24073 | else |
2e6a9f79 | 24074 | return header->offset_size; |
181cebd4 JK |
24075 | } |
24076 | ||
09ba997f | 24077 | /* See read.h. */ |
9aa1f1e3 | 24078 | |
09ba997f | 24079 | struct type * |
293e7e51 | 24080 | dwarf2_cu::addr_type () const |
9a49df9d | 24081 | { |
293e7e51 | 24082 | struct objfile *objfile = this->per_objfile->objfile; |
9a49df9d AB |
24083 | struct type *void_type = objfile_type (objfile)->builtin_void; |
24084 | struct type *addr_type = lookup_pointer_type (void_type); | |
293e7e51 | 24085 | int addr_size = this->per_cu->addr_size (); |
9a49df9d AB |
24086 | |
24087 | if (TYPE_LENGTH (addr_type) == addr_size) | |
24088 | return addr_type; | |
24089 | ||
c6d940a9 | 24090 | addr_type = addr_sized_int_type (addr_type->is_unsigned ()); |
9a49df9d AB |
24091 | return addr_type; |
24092 | } | |
24093 | ||
22b6cd70 TT |
24094 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
24095 | the index of the result, and that searches a vector. It will | |
24096 | return a result even if the offset in question does not actually | |
24097 | occur in any CU. This is separate so that it can be unit | |
24098 | tested. */ | |
ae038cb0 | 24099 | |
22b6cd70 TT |
24100 | static int |
24101 | dwarf2_find_containing_comp_unit | |
24102 | (sect_offset sect_off, | |
24103 | unsigned int offset_in_dwz, | |
24104 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 24105 | { |
ae038cb0 DJ |
24106 | int low, high; |
24107 | ||
ae038cb0 | 24108 | low = 0; |
22b6cd70 | 24109 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
24110 | while (high > low) |
24111 | { | |
36586728 | 24112 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 24113 | int mid = low + (high - low) / 2; |
9a619af0 | 24114 | |
22b6cd70 | 24115 | mid_cu = all_comp_units[mid]; |
36586728 | 24116 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 24117 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 24118 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
24119 | high = mid; |
24120 | else | |
24121 | low = mid + 1; | |
24122 | } | |
24123 | gdb_assert (low == high); | |
22b6cd70 TT |
24124 | return low; |
24125 | } | |
24126 | ||
24127 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
24128 | the DIE at OFFSET. Raises an error on failure. */ | |
24129 | ||
24130 | static struct dwarf2_per_cu_data * | |
24131 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
24132 | unsigned int offset_in_dwz, | |
976ca316 | 24133 | dwarf2_per_objfile *per_objfile) |
22b6cd70 | 24134 | { |
976ca316 SM |
24135 | int low = dwarf2_find_containing_comp_unit |
24136 | (sect_off, offset_in_dwz, per_objfile->per_bfd->all_comp_units); | |
24137 | dwarf2_per_cu_data *this_cu = per_objfile->per_bfd->all_comp_units[low]; | |
22b6cd70 | 24138 | |
45b8ae0c | 24139 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 24140 | { |
36586728 | 24141 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 24142 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
24143 | "offset %s [in module %s]"), |
24144 | sect_offset_str (sect_off), | |
976ca316 | 24145 | bfd_get_filename (per_objfile->objfile->obfd)); |
10b3939b | 24146 | |
976ca316 | 24147 | gdb_assert (per_objfile->per_bfd->all_comp_units[low-1]->sect_off |
9c541725 | 24148 | <= sect_off); |
976ca316 | 24149 | return per_objfile->per_bfd->all_comp_units[low-1]; |
ae038cb0 DJ |
24150 | } |
24151 | else | |
24152 | { | |
976ca316 | 24153 | if (low == per_objfile->per_bfd->all_comp_units.size () - 1 |
9c541725 | 24154 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 24155 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 24156 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
24157 | return this_cu; |
24158 | } | |
24159 | } | |
24160 | ||
22b6cd70 TT |
24161 | #if GDB_SELF_TEST |
24162 | ||
24163 | namespace selftests { | |
24164 | namespace find_containing_comp_unit { | |
24165 | ||
24166 | static void | |
24167 | run_test () | |
24168 | { | |
24169 | struct dwarf2_per_cu_data one {}; | |
24170 | struct dwarf2_per_cu_data two {}; | |
24171 | struct dwarf2_per_cu_data three {}; | |
24172 | struct dwarf2_per_cu_data four {}; | |
24173 | ||
24174 | one.length = 5; | |
24175 | two.sect_off = sect_offset (one.length); | |
24176 | two.length = 7; | |
24177 | ||
24178 | three.length = 5; | |
24179 | three.is_dwz = 1; | |
24180 | four.sect_off = sect_offset (three.length); | |
24181 | four.length = 7; | |
24182 | four.is_dwz = 1; | |
24183 | ||
24184 | std::vector<dwarf2_per_cu_data *> units; | |
24185 | units.push_back (&one); | |
24186 | units.push_back (&two); | |
24187 | units.push_back (&three); | |
24188 | units.push_back (&four); | |
24189 | ||
24190 | int result; | |
24191 | ||
24192 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
24193 | SELF_CHECK (units[result] == &one); | |
24194 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
24195 | SELF_CHECK (units[result] == &one); | |
24196 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
24197 | SELF_CHECK (units[result] == &two); | |
24198 | ||
24199 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
24200 | SELF_CHECK (units[result] == &three); | |
24201 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
24202 | SELF_CHECK (units[result] == &three); | |
24203 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
24204 | SELF_CHECK (units[result] == &four); | |
24205 | } | |
24206 | ||
24207 | } | |
24208 | } | |
24209 | ||
24210 | #endif /* GDB_SELF_TEST */ | |
24211 | ||
9e021579 | 24212 | /* Initialize dwarf2_cu to read PER_CU, in the context of PER_OBJFILE. */ |
93311388 | 24213 | |
9e021579 SM |
24214 | dwarf2_cu::dwarf2_cu (dwarf2_per_cu_data *per_cu, |
24215 | dwarf2_per_objfile *per_objfile) | |
24216 | : per_cu (per_cu), | |
24217 | per_objfile (per_objfile), | |
9068261f AB |
24218 | mark (false), |
24219 | has_loclist (false), | |
24220 | checked_producer (false), | |
24221 | producer_is_gxx_lt_4_6 (false), | |
24222 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 24223 | producer_is_icc (false), |
9068261f | 24224 | producer_is_icc_lt_14 (false), |
c258c396 | 24225 | producer_is_codewarrior (false), |
9068261f | 24226 | processing_has_namespace_info (false) |
93311388 | 24227 | { |
9816fde3 JK |
24228 | } |
24229 | ||
24230 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
24231 | ||
24232 | static void | |
95554aad TT |
24233 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
24234 | enum language pretend_language) | |
9816fde3 JK |
24235 | { |
24236 | struct attribute *attr; | |
24237 | ||
24238 | /* Set the language we're debugging. */ | |
24239 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 24240 | if (attr != nullptr) |
9816fde3 JK |
24241 | set_cu_language (DW_UNSND (attr), cu); |
24242 | else | |
9cded63f | 24243 | { |
95554aad | 24244 | cu->language = pretend_language; |
9cded63f TT |
24245 | cu->language_defn = language_def (cu->language); |
24246 | } | |
dee91e82 | 24247 | |
7d45c7c3 | 24248 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
24249 | } |
24250 | ||
7188ed02 | 24251 | /* See read.h. */ |
ae038cb0 | 24252 | |
7188ed02 SM |
24253 | dwarf2_cu * |
24254 | dwarf2_per_objfile::get_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 24255 | { |
7188ed02 SM |
24256 | auto it = m_dwarf2_cus.find (per_cu); |
24257 | if (it == m_dwarf2_cus.end ()) | |
24258 | return nullptr; | |
ae038cb0 | 24259 | |
7188ed02 SM |
24260 | return it->second; |
24261 | } | |
24262 | ||
24263 | /* See read.h. */ | |
24264 | ||
24265 | void | |
24266 | dwarf2_per_objfile::set_cu (dwarf2_per_cu_data *per_cu, dwarf2_cu *cu) | |
24267 | { | |
24268 | gdb_assert (this->get_cu (per_cu) == nullptr); | |
24269 | ||
24270 | m_dwarf2_cus[per_cu] = cu; | |
24271 | } | |
24272 | ||
24273 | /* See read.h. */ | |
24274 | ||
24275 | void | |
24276 | dwarf2_per_objfile::age_comp_units () | |
24277 | { | |
24278 | /* Start by clearing all marks. */ | |
24279 | for (auto pair : m_dwarf2_cus) | |
24280 | pair.second->mark = false; | |
24281 | ||
24282 | /* Traverse all CUs, mark them and their dependencies if used recently | |
24283 | enough. */ | |
24284 | for (auto pair : m_dwarf2_cus) | |
ae038cb0 | 24285 | { |
7188ed02 SM |
24286 | dwarf2_cu *cu = pair.second; |
24287 | ||
24288 | cu->last_used++; | |
24289 | if (cu->last_used <= dwarf_max_cache_age) | |
24290 | dwarf2_mark (cu); | |
ae038cb0 DJ |
24291 | } |
24292 | ||
7188ed02 SM |
24293 | /* Delete all CUs still not marked. */ |
24294 | for (auto it = m_dwarf2_cus.begin (); it != m_dwarf2_cus.end ();) | |
ae038cb0 | 24295 | { |
7188ed02 | 24296 | dwarf2_cu *cu = it->second; |
ae038cb0 | 24297 | |
7188ed02 | 24298 | if (!cu->mark) |
ae038cb0 | 24299 | { |
7188ed02 SM |
24300 | delete cu; |
24301 | it = m_dwarf2_cus.erase (it); | |
ae038cb0 DJ |
24302 | } |
24303 | else | |
7188ed02 | 24304 | it++; |
ae038cb0 DJ |
24305 | } |
24306 | } | |
24307 | ||
7188ed02 | 24308 | /* See read.h. */ |
ae038cb0 | 24309 | |
7188ed02 SM |
24310 | void |
24311 | dwarf2_per_objfile::remove_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 24312 | { |
7188ed02 SM |
24313 | auto it = m_dwarf2_cus.find (per_cu); |
24314 | if (it == m_dwarf2_cus.end ()) | |
24315 | return; | |
ae038cb0 | 24316 | |
7188ed02 | 24317 | delete it->second; |
ae038cb0 | 24318 | |
7188ed02 SM |
24319 | m_dwarf2_cus.erase (it); |
24320 | } | |
ae038cb0 | 24321 | |
7188ed02 SM |
24322 | dwarf2_per_objfile::~dwarf2_per_objfile () |
24323 | { | |
24324 | remove_all_cus (); | |
ae038cb0 DJ |
24325 | } |
24326 | ||
dee91e82 DE |
24327 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
24328 | We store these in a hash table separate from the DIEs, and preserve them | |
24329 | when the DIEs are flushed out of cache. | |
24330 | ||
24331 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 24332 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
24333 | or the type may come from a DWO file. Furthermore, while it's more logical |
24334 | to use per_cu->section+offset, with Fission the section with the data is in | |
24335 | the DWO file but we don't know that section at the point we need it. | |
24336 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
24337 | because we can enter the lookup routine, get_die_type_at_offset, from | |
24338 | outside this file, and thus won't necessarily have PER_CU->cu. | |
24339 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 24340 | |
dee91e82 | 24341 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 24342 | { |
dee91e82 | 24343 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 24344 | sect_offset sect_off; |
1c379e20 DJ |
24345 | struct type *type; |
24346 | }; | |
24347 | ||
dee91e82 | 24348 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
24349 | |
24350 | static hashval_t | |
dee91e82 | 24351 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 24352 | { |
9a3c8263 SM |
24353 | const struct dwarf2_per_cu_offset_and_type *ofs |
24354 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 24355 | |
9c541725 | 24356 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
24357 | } |
24358 | ||
dee91e82 | 24359 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
24360 | |
24361 | static int | |
dee91e82 | 24362 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 24363 | { |
9a3c8263 SM |
24364 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
24365 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
24366 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
24367 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 24368 | |
dee91e82 | 24369 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 24370 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
24371 | } |
24372 | ||
24373 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
24374 | table if necessary. For convenience, return TYPE. |
24375 | ||
24376 | The DIEs reading must have careful ordering to: | |
85102364 | 24377 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
24378 | reading current DIE. |
24379 | * Not trying to dereference contents of still incompletely read in types | |
24380 | while reading in other DIEs. | |
24381 | * Enable referencing still incompletely read in types just by a pointer to | |
24382 | the type without accessing its fields. | |
24383 | ||
24384 | Therefore caller should follow these rules: | |
24385 | * Try to fetch any prerequisite types we may need to build this DIE type | |
24386 | before building the type and calling set_die_type. | |
e71ec853 | 24387 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
24388 | possible before fetching more types to complete the current type. |
24389 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 24390 | |
f792889a | 24391 | static struct type * |
1c379e20 DJ |
24392 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
24393 | { | |
976ca316 | 24394 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
dee91e82 | 24395 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
976ca316 | 24396 | struct objfile *objfile = per_objfile->objfile; |
3cdcd0ce JB |
24397 | struct attribute *attr; |
24398 | struct dynamic_prop prop; | |
1c379e20 | 24399 | |
b4ba55a1 JB |
24400 | /* For Ada types, make sure that the gnat-specific data is always |
24401 | initialized (if not already set). There are a few types where | |
24402 | we should not be doing so, because the type-specific area is | |
24403 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
24404 | where the type-specific area is used to store the floatformat). | |
24405 | But this is not a problem, because the gnat-specific information | |
24406 | is actually not needed for these types. */ | |
24407 | if (need_gnat_info (cu) | |
78134374 SM |
24408 | && type->code () != TYPE_CODE_FUNC |
24409 | && type->code () != TYPE_CODE_FLT | |
24410 | && type->code () != TYPE_CODE_METHODPTR | |
24411 | && type->code () != TYPE_CODE_MEMBERPTR | |
24412 | && type->code () != TYPE_CODE_METHOD | |
b4ba55a1 JB |
24413 | && !HAVE_GNAT_AUX_INFO (type)) |
24414 | INIT_GNAT_SPECIFIC (type); | |
24415 | ||
3f2f83dd KB |
24416 | /* Read DW_AT_allocated and set in type. */ |
24417 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
9cdf9820 | 24418 | if (attr != NULL) |
3f2f83dd | 24419 | { |
293e7e51 | 24420 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 24421 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
5c54719c | 24422 | type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); |
3f2f83dd | 24423 | } |
3f2f83dd KB |
24424 | |
24425 | /* Read DW_AT_associated and set in type. */ | |
24426 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
9cdf9820 | 24427 | if (attr != NULL) |
3f2f83dd | 24428 | { |
293e7e51 | 24429 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 24430 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
5c54719c | 24431 | type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); |
3f2f83dd | 24432 | } |
3f2f83dd | 24433 | |
3cdcd0ce JB |
24434 | /* Read DW_AT_data_location and set in type. */ |
24435 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
293e7e51 | 24436 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 24437 | type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); |
3cdcd0ce | 24438 | |
976ca316 SM |
24439 | if (per_objfile->die_type_hash == NULL) |
24440 | per_objfile->die_type_hash | |
0335378b TT |
24441 | = htab_up (htab_create_alloc (127, |
24442 | per_cu_offset_and_type_hash, | |
24443 | per_cu_offset_and_type_eq, | |
24444 | NULL, xcalloc, xfree)); | |
1c379e20 | 24445 | |
dee91e82 | 24446 | ofs.per_cu = cu->per_cu; |
9c541725 | 24447 | ofs.sect_off = die->sect_off; |
1c379e20 | 24448 | ofs.type = type; |
dee91e82 | 24449 | slot = (struct dwarf2_per_cu_offset_and_type **) |
976ca316 | 24450 | htab_find_slot (per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 24451 | if (*slot) |
b98664d3 | 24452 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 24453 | sect_offset_str (die->sect_off)); |
8d749320 SM |
24454 | *slot = XOBNEW (&objfile->objfile_obstack, |
24455 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 24456 | **slot = ofs; |
f792889a | 24457 | return type; |
1c379e20 DJ |
24458 | } |
24459 | ||
9c541725 | 24460 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 24461 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
24462 | |
24463 | static struct type * | |
9c541725 | 24464 | get_die_type_at_offset (sect_offset sect_off, |
aa66c379 | 24465 | dwarf2_per_cu_data *per_cu, |
976ca316 | 24466 | dwarf2_per_objfile *per_objfile) |
1c379e20 | 24467 | { |
dee91e82 | 24468 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 24469 | |
976ca316 | 24470 | if (per_objfile->die_type_hash == NULL) |
f792889a | 24471 | return NULL; |
1c379e20 | 24472 | |
dee91e82 | 24473 | ofs.per_cu = per_cu; |
9c541725 | 24474 | ofs.sect_off = sect_off; |
9a3c8263 | 24475 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
976ca316 | 24476 | htab_find (per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
24477 | if (slot) |
24478 | return slot->type; | |
24479 | else | |
24480 | return NULL; | |
24481 | } | |
24482 | ||
02142a6c | 24483 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
24484 | or return NULL if DIE does not have a saved type. */ |
24485 | ||
24486 | static struct type * | |
24487 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
24488 | { | |
aa66c379 | 24489 | return get_die_type_at_offset (die->sect_off, cu->per_cu, cu->per_objfile); |
673bfd45 DE |
24490 | } |
24491 | ||
10b3939b DJ |
24492 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
24493 | ||
24494 | static void | |
24495 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
24496 | struct dwarf2_per_cu_data *ref_per_cu) | |
24497 | { | |
24498 | void **slot; | |
24499 | ||
24500 | if (cu->dependencies == NULL) | |
24501 | cu->dependencies | |
24502 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
24503 | NULL, &cu->comp_unit_obstack, | |
24504 | hashtab_obstack_allocate, | |
24505 | dummy_obstack_deallocate); | |
24506 | ||
24507 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
24508 | if (*slot == NULL) | |
24509 | *slot = ref_per_cu; | |
24510 | } | |
1c379e20 | 24511 | |
f504f079 DE |
24512 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
24513 | Set the mark field in every compilation unit in the | |
7188ed02 SM |
24514 | cache that we must keep because we are keeping CU. |
24515 | ||
24516 | DATA is the dwarf2_per_objfile object in which to look up CUs. */ | |
ae038cb0 | 24517 | |
10b3939b DJ |
24518 | static int |
24519 | dwarf2_mark_helper (void **slot, void *data) | |
24520 | { | |
7188ed02 SM |
24521 | dwarf2_per_cu_data *per_cu = (dwarf2_per_cu_data *) *slot; |
24522 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) data; | |
24523 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); | |
d07ed419 JK |
24524 | |
24525 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
24526 | reading of the chain. As such dependencies remain valid it is not much | |
24527 | useful to track and undo them during QUIT cleanups. */ | |
7188ed02 | 24528 | if (cu == nullptr) |
d07ed419 JK |
24529 | return 1; |
24530 | ||
7188ed02 | 24531 | if (cu->mark) |
10b3939b | 24532 | return 1; |
10b3939b | 24533 | |
7188ed02 SM |
24534 | cu->mark = true; |
24535 | ||
24536 | if (cu->dependencies != nullptr) | |
24537 | htab_traverse (cu->dependencies, dwarf2_mark_helper, per_objfile); | |
10b3939b DJ |
24538 | |
24539 | return 1; | |
24540 | } | |
24541 | ||
f504f079 DE |
24542 | /* Set the mark field in CU and in every other compilation unit in the |
24543 | cache that we must keep because we are keeping CU. */ | |
24544 | ||
ae038cb0 DJ |
24545 | static void |
24546 | dwarf2_mark (struct dwarf2_cu *cu) | |
24547 | { | |
24548 | if (cu->mark) | |
24549 | return; | |
7188ed02 | 24550 | |
9068261f | 24551 | cu->mark = true; |
ae038cb0 | 24552 | |
7188ed02 SM |
24553 | if (cu->dependencies != nullptr) |
24554 | htab_traverse (cu->dependencies, dwarf2_mark_helper, cu->per_objfile); | |
72bf9492 DJ |
24555 | } |
24556 | ||
72bf9492 DJ |
24557 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
24558 | is its offset in .debug_info for this objfile. */ | |
24559 | ||
24560 | static hashval_t | |
24561 | partial_die_hash (const void *item) | |
24562 | { | |
9a3c8263 SM |
24563 | const struct partial_die_info *part_die |
24564 | = (const struct partial_die_info *) item; | |
9a619af0 | 24565 | |
9c541725 | 24566 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
24567 | } |
24568 | ||
24569 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
24570 | are equal if they have the same offset. */ | |
24571 | ||
24572 | static int | |
24573 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
24574 | { | |
9a3c8263 SM |
24575 | const struct partial_die_info *part_die_lhs |
24576 | = (const struct partial_die_info *) item_lhs; | |
24577 | const struct partial_die_info *part_die_rhs | |
24578 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 24579 | |
9c541725 | 24580 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
24581 | } |
24582 | ||
3c3bb058 AB |
24583 | struct cmd_list_element *set_dwarf_cmdlist; |
24584 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 24585 | |
9291a0cd | 24586 | static void |
cd4fb1b2 SM |
24587 | show_check_physname (struct ui_file *file, int from_tty, |
24588 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 24589 | { |
cd4fb1b2 SM |
24590 | fprintf_filtered (file, |
24591 | _("Whether to check \"physname\" is %s.\n"), | |
24592 | value); | |
9291a0cd TT |
24593 | } |
24594 | ||
6c265988 | 24595 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 24596 | void |
6c265988 | 24597 | _initialize_dwarf2_read () |
9291a0cd | 24598 | { |
0743fc83 | 24599 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 24600 | Set DWARF specific variables.\n\ |
590042fc | 24601 | Configure DWARF variables such as the cache size."), |
0743fc83 TT |
24602 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
24603 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 24604 | |
0743fc83 | 24605 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
24606 | Show DWARF specific variables.\n\ |
24607 | Show DWARF variables such as the cache size."), | |
0743fc83 TT |
24608 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
24609 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 24610 | |
cd4fb1b2 SM |
24611 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
24612 | &dwarf_max_cache_age, _("\ | |
24613 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
24614 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
24615 | A higher limit means that cached compilation units will be stored\n\ | |
24616 | in memory longer, and more total memory will be used. Zero disables\n\ | |
24617 | caching, which can slow down startup."), | |
24618 | NULL, | |
24619 | show_dwarf_max_cache_age, | |
24620 | &set_dwarf_cmdlist, | |
24621 | &show_dwarf_cmdlist); | |
156942c7 | 24622 | |
cd4fb1b2 SM |
24623 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
24624 | Set debugging of the DWARF reader."), _("\ | |
24625 | Show debugging of the DWARF reader."), _("\ | |
24626 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
24627 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
24628 | information. A value greater than 1 provides more verbose information."), | |
24629 | NULL, | |
24630 | NULL, | |
24631 | &setdebuglist, &showdebuglist); | |
9291a0cd | 24632 | |
cd4fb1b2 SM |
24633 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
24634 | Set debugging of the DWARF DIE reader."), _("\ | |
24635 | Show debugging of the DWARF DIE reader."), _("\ | |
24636 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
24637 | The value is the maximum depth to print."), | |
24638 | NULL, | |
24639 | NULL, | |
24640 | &setdebuglist, &showdebuglist); | |
9291a0cd | 24641 | |
cd4fb1b2 SM |
24642 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
24643 | Set debugging of the dwarf line reader."), _("\ | |
24644 | Show debugging of the dwarf line reader."), _("\ | |
24645 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
24646 | A value of 1 (one) provides basic information.\n\ | |
24647 | A value greater than 1 provides more verbose information."), | |
24648 | NULL, | |
24649 | NULL, | |
24650 | &setdebuglist, &showdebuglist); | |
437afbb8 | 24651 | |
cd4fb1b2 SM |
24652 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
24653 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
24654 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
24655 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
24656 | the demangler."), | |
24657 | NULL, show_check_physname, | |
24658 | &setdebuglist, &showdebuglist); | |
900e11f9 | 24659 | |
e615022a DE |
24660 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
24661 | no_class, &use_deprecated_index_sections, _("\ | |
24662 | Set whether to use deprecated gdb_index sections."), _("\ | |
24663 | Show whether to use deprecated gdb_index sections."), _("\ | |
24664 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
24665 | Normally they are ignored either because of a missing feature or\n\ | |
24666 | performance issue.\n\ | |
24667 | Warning: This option must be enabled before gdb reads the file."), | |
24668 | NULL, | |
24669 | NULL, | |
24670 | &setlist, &showlist); | |
24671 | ||
f1e6e072 TT |
24672 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
24673 | &dwarf2_locexpr_funcs); | |
24674 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
24675 | &dwarf2_loclist_funcs); | |
24676 | ||
24677 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24678 | &dwarf2_block_frame_base_locexpr_funcs); | |
24679 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24680 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
24681 | |
24682 | #if GDB_SELF_TEST | |
24683 | selftests::register_test ("dw2_expand_symtabs_matching", | |
24684 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
24685 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
24686 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 24687 | #endif |
6502dd73 | 24688 | } |