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 | |
6f738b01 SM |
96 | /* Print a "dwarf-read" debug statement if dwarf_read_debug is >= 1. */ |
97 | ||
98 | #define dwarf_read_debug_printf(fmt, ...) \ | |
99 | do \ | |
100 | { \ | |
101 | if (dwarf_read_debug >= 1) \ | |
102 | debug_prefixed_printf ("dwarf-read", __func__, fmt, ##__VA_ARGS__); \ | |
103 | } \ | |
104 | while (0) | |
105 | ||
106 | /* Print a "dwarf-read" debug statement if dwarf_read_debug is >= 2. */ | |
107 | ||
108 | #define dwarf_read_debug_printf_v(fmt, ...) \ | |
109 | do \ | |
110 | { \ | |
111 | if (dwarf_read_debug >= 2) \ | |
112 | debug_prefixed_printf ("dwarf-read", __func__, fmt, ##__VA_ARGS__); \ | |
113 | } \ | |
114 | while (0) | |
115 | ||
d97bc12b | 116 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 117 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 118 | |
27e0867f | 119 | /* When non-zero, dump line number entries as they are read in. */ |
8fdd972c | 120 | unsigned int dwarf_line_debug = 0; |
27e0867f | 121 | |
491144b5 CB |
122 | /* When true, cross-check physname against demangler. */ |
123 | static bool check_physname = false; | |
900e11f9 | 124 | |
491144b5 CB |
125 | /* When true, do not reject deprecated .gdb_index sections. */ |
126 | static bool use_deprecated_index_sections = false; | |
481860b3 | 127 | |
17ee85fc TT |
128 | /* This is used to store the data that is always per objfile. */ |
129 | static const objfile_key<dwarf2_per_objfile> dwarf2_objfile_data_key; | |
130 | ||
131 | /* These are used to store the dwarf2_per_bfd objects. | |
132 | ||
133 | objfiles having the same BFD, which doesn't require relocations, are going to | |
134 | share a dwarf2_per_bfd object, which is held in the _bfd_data_key version. | |
135 | ||
136 | Other objfiles are not going to share a dwarf2_per_bfd with any other | |
137 | objfiles, so they'll have their own version kept in the _objfile_data_key | |
138 | version. */ | |
139 | static const struct bfd_key<dwarf2_per_bfd> dwarf2_per_bfd_bfd_data_key; | |
140 | static const struct objfile_key<dwarf2_per_bfd> dwarf2_per_bfd_objfile_data_key; | |
6502dd73 | 141 | |
f1e6e072 TT |
142 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
143 | ||
144 | static int dwarf2_locexpr_index; | |
145 | static int dwarf2_loclist_index; | |
146 | static int dwarf2_locexpr_block_index; | |
147 | static int dwarf2_loclist_block_index; | |
148 | ||
41144253 | 149 | /* Size of .debug_loclists section header for 32-bit DWARF format. */ |
150 | #define LOCLIST_HEADER_SIZE32 12 | |
151 | ||
152 | /* Size of .debug_loclists section header for 64-bit DWARF format. */ | |
153 | #define LOCLIST_HEADER_SIZE64 20 | |
154 | ||
d0ce17d8 CT |
155 | /* Size of .debug_rnglists section header for 32-bit DWARF format. */ |
156 | #define RNGLIST_HEADER_SIZE32 12 | |
157 | ||
158 | /* Size of .debug_rnglists section header for 64-bit DWARF format. */ | |
159 | #define RNGLIST_HEADER_SIZE64 20 | |
160 | ||
3f563c84 PA |
161 | /* An index into a (C++) symbol name component in a symbol name as |
162 | recorded in the mapped_index's symbol table. For each C++ symbol | |
163 | in the symbol table, we record one entry for the start of each | |
164 | component in the symbol in a table of name components, and then | |
165 | sort the table, in order to be able to binary search symbol names, | |
166 | ignoring leading namespaces, both completion and regular look up. | |
167 | For example, for symbol "A::B::C", we'll have an entry that points | |
168 | to "A::B::C", another that points to "B::C", and another for "C". | |
169 | Note that function symbols in GDB index have no parameter | |
170 | information, just the function/method names. You can convert a | |
171 | name_component to a "const char *" using the | |
172 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
173 | ||
174 | struct name_component | |
175 | { | |
176 | /* Offset in the symbol name where the component starts. Stored as | |
177 | a (32-bit) offset instead of a pointer to save memory and improve | |
178 | locality on 64-bit architectures. */ | |
179 | offset_type name_offset; | |
180 | ||
181 | /* The symbol's index in the symbol and constant pool tables of a | |
182 | mapped_index. */ | |
183 | offset_type idx; | |
184 | }; | |
185 | ||
44ed8f3e PA |
186 | /* Base class containing bits shared by both .gdb_index and |
187 | .debug_name indexes. */ | |
188 | ||
189 | struct mapped_index_base | |
190 | { | |
22ca247e TT |
191 | mapped_index_base () = default; |
192 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
193 | ||
44ed8f3e PA |
194 | /* The name_component table (a sorted vector). See name_component's |
195 | description above. */ | |
196 | std::vector<name_component> name_components; | |
197 | ||
198 | /* How NAME_COMPONENTS is sorted. */ | |
199 | enum case_sensitivity name_components_casing; | |
200 | ||
201 | /* Return the number of names in the symbol table. */ | |
202 | virtual size_t symbol_name_count () const = 0; | |
203 | ||
204 | /* Get the name of the symbol at IDX in the symbol table. */ | |
fcf23d5b SM |
205 | virtual const char *symbol_name_at |
206 | (offset_type idx, dwarf2_per_objfile *per_objfile) const = 0; | |
44ed8f3e PA |
207 | |
208 | /* Return whether the name at IDX in the symbol table should be | |
209 | ignored. */ | |
210 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
211 | { | |
212 | return false; | |
213 | } | |
214 | ||
215 | /* Build the symbol name component sorted vector, if we haven't | |
216 | yet. */ | |
fcf23d5b | 217 | void build_name_components (dwarf2_per_objfile *per_objfile); |
44ed8f3e PA |
218 | |
219 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
220 | possible matches for LN_NO_PARAMS in the name component | |
221 | vector. */ | |
222 | std::pair<std::vector<name_component>::const_iterator, | |
223 | std::vector<name_component>::const_iterator> | |
3b00ef10 | 224 | find_name_components_bounds (const lookup_name_info &ln_no_params, |
fcf23d5b SM |
225 | enum language lang, |
226 | dwarf2_per_objfile *per_objfile) const; | |
44ed8f3e PA |
227 | |
228 | /* Prevent deleting/destroying via a base class pointer. */ | |
229 | protected: | |
230 | ~mapped_index_base() = default; | |
231 | }; | |
232 | ||
9291a0cd TT |
233 | /* A description of the mapped index. The file format is described in |
234 | a comment by the code that writes the index. */ | |
fc898b42 | 235 | struct mapped_index final : public mapped_index_base |
9291a0cd | 236 | { |
f00a2de2 PA |
237 | /* A slot/bucket in the symbol table hash. */ |
238 | struct symbol_table_slot | |
239 | { | |
240 | const offset_type name; | |
241 | const offset_type vec; | |
242 | }; | |
243 | ||
559a7a62 | 244 | /* Index data format version. */ |
3063847f | 245 | int version = 0; |
559a7a62 | 246 | |
f00a2de2 PA |
247 | /* The address table data. */ |
248 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 249 | |
3876f04e | 250 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 251 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 252 | |
9291a0cd | 253 | /* A pointer to the constant pool. */ |
3063847f | 254 | const char *constant_pool = nullptr; |
3f563c84 | 255 | |
44ed8f3e PA |
256 | bool symbol_name_slot_invalid (offset_type idx) const override |
257 | { | |
258 | const auto &bucket = this->symbol_table[idx]; | |
9ab08412 | 259 | return bucket.name == 0 && bucket.vec == 0; |
44ed8f3e | 260 | } |
5c58de74 | 261 | |
3f563c84 PA |
262 | /* Convenience method to get at the name of the symbol at IDX in the |
263 | symbol table. */ | |
fcf23d5b SM |
264 | const char *symbol_name_at |
265 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
f00a2de2 | 266 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 267 | |
44ed8f3e PA |
268 | size_t symbol_name_count () const override |
269 | { return this->symbol_table.size (); } | |
9291a0cd TT |
270 | }; |
271 | ||
927aa2e7 JK |
272 | /* A description of the mapped .debug_names. |
273 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 274 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 JK |
275 | { |
276 | bfd_endian dwarf5_byte_order; | |
277 | bool dwarf5_is_dwarf64; | |
278 | bool augmentation_is_gdb; | |
279 | uint8_t offset_size; | |
280 | uint32_t cu_count = 0; | |
281 | uint32_t tu_count, bucket_count, name_count; | |
282 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
283 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
284 | const gdb_byte *name_table_string_offs_reordered; | |
285 | const gdb_byte *name_table_entry_offs_reordered; | |
286 | const gdb_byte *entry_pool; | |
287 | ||
288 | struct index_val | |
289 | { | |
290 | ULONGEST dwarf_tag; | |
291 | struct attr | |
292 | { | |
293 | /* Attribute name DW_IDX_*. */ | |
294 | ULONGEST dw_idx; | |
295 | ||
296 | /* Attribute form DW_FORM_*. */ | |
297 | ULONGEST form; | |
298 | ||
299 | /* Value if FORM is DW_FORM_implicit_const. */ | |
300 | LONGEST implicit_const; | |
301 | }; | |
302 | std::vector<attr> attr_vec; | |
303 | }; | |
304 | ||
305 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
306 | ||
fcf23d5b SM |
307 | const char *namei_to_name |
308 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const; | |
44ed8f3e PA |
309 | |
310 | /* Implementation of the mapped_index_base virtual interface, for | |
311 | the name_components cache. */ | |
312 | ||
fcf23d5b SM |
313 | const char *symbol_name_at |
314 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
315 | { return namei_to_name (idx, per_objfile); } | |
44ed8f3e PA |
316 | |
317 | size_t symbol_name_count () const override | |
318 | { return this->name_count; } | |
927aa2e7 JK |
319 | }; |
320 | ||
cd4fb1b2 | 321 | /* See dwarf2read.h. */ |
ed2dc618 | 322 | |
cd4fb1b2 | 323 | dwarf2_per_objfile * |
ed2dc618 SM |
324 | get_dwarf2_per_objfile (struct objfile *objfile) |
325 | { | |
5bfd760d | 326 | return dwarf2_objfile_data_key.get (objfile); |
ed2dc618 | 327 | } |
c906108c | 328 | |
251d32d9 | 329 | /* Default names of the debugging sections. */ |
c906108c | 330 | |
233a11ab CS |
331 | /* Note that if the debugging section has been compressed, it might |
332 | have a name like .zdebug_info. */ | |
333 | ||
9cdd5dbd DE |
334 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
335 | { | |
251d32d9 TG |
336 | { ".debug_info", ".zdebug_info" }, |
337 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
338 | { ".debug_line", ".zdebug_line" }, | |
339 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 340 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 341 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 342 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 343 | { ".debug_str", ".zdebug_str" }, |
18a8505e | 344 | { ".debug_str_offsets", ".zdebug_str_offsets" }, |
43988095 | 345 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 346 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 347 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 348 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 349 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
350 | { ".debug_frame", ".zdebug_frame" }, |
351 | { ".eh_frame", NULL }, | |
24d3216f | 352 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
353 | { ".debug_names", ".zdebug_names" }, |
354 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 355 | 23 |
251d32d9 | 356 | }; |
c906108c | 357 | |
80626a55 | 358 | /* List of DWO/DWP sections. */ |
3019eac3 | 359 | |
80626a55 | 360 | static const struct dwop_section_names |
3019eac3 DE |
361 | { |
362 | struct dwarf2_section_names abbrev_dwo; | |
363 | struct dwarf2_section_names info_dwo; | |
364 | struct dwarf2_section_names line_dwo; | |
365 | struct dwarf2_section_names loc_dwo; | |
43988095 | 366 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
367 | struct dwarf2_section_names macinfo_dwo; |
368 | struct dwarf2_section_names macro_dwo; | |
d0ce17d8 | 369 | struct dwarf2_section_names rnglists_dwo; |
3019eac3 DE |
370 | struct dwarf2_section_names str_dwo; |
371 | struct dwarf2_section_names str_offsets_dwo; | |
372 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
373 | struct dwarf2_section_names cu_index; |
374 | struct dwarf2_section_names tu_index; | |
3019eac3 | 375 | } |
80626a55 | 376 | dwop_section_names = |
3019eac3 DE |
377 | { |
378 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
379 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
380 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
381 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 382 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
383 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
384 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
d0ce17d8 | 385 | { ".debug_rnglists.dwo", ".zdebug_rnglists.dwo" }, |
3019eac3 DE |
386 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
387 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
388 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
389 | { ".debug_cu_index", ".zdebug_cu_index" }, |
390 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
391 | }; |
392 | ||
c906108c SS |
393 | /* local data types */ |
394 | ||
d0ce17d8 CT |
395 | /* The location list and range list sections (.debug_loclists & .debug_rnglists) |
396 | begin with a header, which contains the following information. */ | |
397 | struct loclists_rnglists_header | |
41144253 | 398 | { |
399 | /* A 4-byte or 12-byte length containing the length of the | |
400 | set of entries for this compilation unit, not including the | |
401 | length field itself. */ | |
402 | unsigned int length; | |
403 | ||
404 | /* A 2-byte version identifier. */ | |
405 | short version; | |
406 | ||
407 | /* A 1-byte unsigned integer containing the size in bytes of an address on | |
408 | the target system. */ | |
409 | unsigned char addr_size; | |
410 | ||
411 | /* A 1-byte unsigned integer containing the size in bytes of a segment selector | |
412 | on the target system. */ | |
413 | unsigned char segment_collector_size; | |
414 | ||
415 | /* A 4-byte count of the number of offsets that follow the header. */ | |
416 | unsigned int offset_entry_count; | |
417 | }; | |
418 | ||
3da10d80 KS |
419 | /* Type used for delaying computation of method physnames. |
420 | See comments for compute_delayed_physnames. */ | |
421 | struct delayed_method_info | |
422 | { | |
423 | /* The type to which the method is attached, i.e., its parent class. */ | |
424 | struct type *type; | |
425 | ||
426 | /* The index of the method in the type's function fieldlists. */ | |
427 | int fnfield_index; | |
428 | ||
429 | /* The index of the method in the fieldlist. */ | |
430 | int index; | |
431 | ||
432 | /* The name of the DIE. */ | |
433 | const char *name; | |
434 | ||
435 | /* The DIE associated with this method. */ | |
436 | struct die_info *die; | |
437 | }; | |
438 | ||
e7c27a73 DJ |
439 | /* Internal state when decoding a particular compilation unit. */ |
440 | struct dwarf2_cu | |
441 | { | |
9e021579 SM |
442 | explicit dwarf2_cu (dwarf2_per_cu_data *per_cu, |
443 | dwarf2_per_objfile *per_objfile); | |
fcd3b13d SM |
444 | |
445 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
446 | ||
c24bdb02 KS |
447 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
448 | Create the set of symtabs used by this TU, or if this TU is sharing | |
449 | symtabs with another TU and the symtabs have already been created | |
450 | then restore those symtabs in the line header. | |
451 | We don't need the pc/line-number mapping for type units. */ | |
452 | void setup_type_unit_groups (struct die_info *die); | |
453 | ||
454 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
455 | buildsym_compunit constructor. */ | |
456 | struct compunit_symtab *start_symtab (const char *name, | |
457 | const char *comp_dir, | |
458 | CORE_ADDR low_pc); | |
459 | ||
460 | /* Reset the builder. */ | |
461 | void reset_builder () { m_builder.reset (); } | |
462 | ||
293e7e51 SM |
463 | /* Return a type that is a generic pointer type, the size of which |
464 | matches the address size given in the compilation unit header for | |
465 | this CU. */ | |
466 | struct type *addr_type () const; | |
467 | ||
468 | /* Find an integer type the same size as the address size given in | |
469 | the compilation unit header for this CU. UNSIGNED_P controls if | |
470 | the integer is unsigned or not. */ | |
471 | struct type *addr_sized_int_type (bool unsigned_p) const; | |
472 | ||
d00adf39 | 473 | /* The header of the compilation unit. */ |
fcd3b13d | 474 | struct comp_unit_head header {}; |
e142c38c | 475 | |
d00adf39 | 476 | /* Base address of this compilation unit. */ |
2b24b6e4 | 477 | gdb::optional<CORE_ADDR> base_address; |
d00adf39 | 478 | |
e142c38c | 479 | /* The language we are debugging. */ |
fcd3b13d SM |
480 | enum language language = language_unknown; |
481 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 482 | |
fcd3b13d | 483 | const char *producer = nullptr; |
b0f35d58 | 484 | |
c24bdb02 | 485 | private: |
804d2729 TT |
486 | /* The symtab builder for this CU. This is only non-NULL when full |
487 | symbols are being read. */ | |
c24bdb02 | 488 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 489 | |
c24bdb02 | 490 | public: |
e142c38c DJ |
491 | /* The generic symbol table building routines have separate lists for |
492 | file scope symbols and all all other scopes (local scopes). So | |
493 | we need to select the right one to pass to add_symbol_to_list(). | |
494 | We do it by keeping a pointer to the correct list in list_in_scope. | |
495 | ||
496 | FIXME: The original dwarf code just treated the file scope as the | |
497 | first local scope, and all other local scopes as nested local | |
498 | scopes, and worked fine. Check to see if we really need to | |
499 | distinguish these in buildsym.c. */ | |
fcd3b13d | 500 | struct pending **list_in_scope = nullptr; |
e142c38c | 501 | |
b64f50a1 JK |
502 | /* Hash table holding all the loaded partial DIEs |
503 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 504 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
505 | |
506 | /* Storage for things with the same lifetime as this read-in compilation | |
507 | unit, including partial DIEs. */ | |
fcd3b13d | 508 | auto_obstack comp_unit_obstack; |
72bf9492 | 509 | |
69d751e3 | 510 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
511 | struct dwarf2_per_cu_data *per_cu; |
512 | ||
9e021579 | 513 | /* The dwarf2_per_objfile that owns this. */ |
976ca316 | 514 | dwarf2_per_objfile *per_objfile; |
9e021579 | 515 | |
ae038cb0 | 516 | /* How many compilation units ago was this CU last referenced? */ |
fcd3b13d | 517 | int last_used = 0; |
ae038cb0 | 518 | |
b64f50a1 JK |
519 | /* A hash table of DIE cu_offset for following references with |
520 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 521 | htab_t die_hash = nullptr; |
10b3939b DJ |
522 | |
523 | /* Full DIEs if read in. */ | |
fcd3b13d | 524 | struct die_info *dies = nullptr; |
10b3939b DJ |
525 | |
526 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
527 | units referenced by this one. Only set during full symbol processing; | |
528 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 529 | htab_t dependencies = nullptr; |
10b3939b | 530 | |
cb1df416 | 531 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 532 | struct line_header *line_header = nullptr; |
4c8aa72d | 533 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
5989a64e | 534 | it's owned by dwarf2_per_bfd::line_header_hash. If non-NULL, |
4c8aa72d PA |
535 | this is the DW_TAG_compile_unit die for this CU. We'll hold on |
536 | to the line header as long as this DIE is being processed. See | |
537 | process_die_scope. */ | |
fcd3b13d | 538 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 539 | |
3da10d80 KS |
540 | /* A list of methods which need to have physnames computed |
541 | after all type information has been read. */ | |
c89b44cd | 542 | std::vector<delayed_method_info> method_list; |
3da10d80 | 543 | |
96408a79 | 544 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 545 | htab_t call_site_htab = nullptr; |
96408a79 | 546 | |
034e5797 DE |
547 | /* Non-NULL if this CU came from a DWO file. |
548 | There is an invariant here that is important to remember: | |
549 | Except for attributes copied from the top level DIE in the "main" | |
550 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 551 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
552 | Either there isn't a DWO file (in which case this is NULL and the point |
553 | is moot), or there is and either we're not going to read it (in which | |
554 | case this is NULL) or there is and we are reading it (in which case this | |
555 | is non-NULL). */ | |
fcd3b13d | 556 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 557 | |
18a8505e | 558 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 559 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 560 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 561 | |
18a8505e | 562 | /* The DW_AT_rnglists_base attribute if present. |
1dbab08b | 563 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 564 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
565 | be used without needing to know whether DWO files are in use or not. |
566 | N.B. This does not apply to DW_AT_ranges appearing in | |
567 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
568 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
18a8505e | 569 | DW_AT_rnglists_base *would* have to be applied, and we'd have to care |
ab435259 | 570 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ |
fcd3b13d | 571 | ULONGEST ranges_base = 0; |
2e3cf129 | 572 | |
41144253 | 573 | /* The DW_AT_loclists_base attribute if present. */ |
574 | ULONGEST loclist_base = 0; | |
575 | ||
c9317f21 TT |
576 | /* When reading debug info generated by older versions of rustc, we |
577 | have to rewrite some union types to be struct types with a | |
578 | variant part. This rewriting must be done after the CU is fully | |
579 | read in, because otherwise at the point of rewriting some struct | |
580 | type might not have been fully processed. So, we keep a list of | |
581 | all such types here and process them after expansion. */ | |
582 | std::vector<struct type *> rust_unions; | |
583 | ||
18a8505e AT |
584 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
585 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
586 | value is often implicit and is the size of the header of | |
587 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
588 | gdb::optional<ULONGEST> str_offsets_base; | |
589 | ||
ae038cb0 | 590 | /* Mark used when releasing cached dies. */ |
9068261f | 591 | bool mark : 1; |
ae038cb0 | 592 | |
8be455d7 JK |
593 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
594 | This test is imperfect as there may exist optimized debug code not using | |
595 | any location list and still facing inlining issues if handled as | |
596 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 597 | bool has_loclist : 1; |
ba919b58 | 598 | |
9068261f | 599 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
600 | if all the producer_is_* fields are valid. This information is cached |
601 | because profiling CU expansion showed excessive time spent in | |
602 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
603 | bool checked_producer : 1; |
604 | bool producer_is_gxx_lt_4_6 : 1; | |
605 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 606 | bool producer_is_icc : 1; |
9068261f | 607 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 608 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 609 | |
9068261f | 610 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
611 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
612 | this information, but later versions do. */ | |
613 | ||
9068261f | 614 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
615 | |
616 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
617 | |
618 | /* If this CU was inherited by another CU (via specification, | |
619 | abstract_origin, etc), this is the ancestor CU. */ | |
620 | dwarf2_cu *ancestor; | |
621 | ||
622 | /* Get the buildsym_compunit for this CU. */ | |
623 | buildsym_compunit *get_builder () | |
624 | { | |
625 | /* If this CU has a builder associated with it, use that. */ | |
626 | if (m_builder != nullptr) | |
627 | return m_builder.get (); | |
628 | ||
629 | /* Otherwise, search ancestors for a valid builder. */ | |
630 | if (ancestor != nullptr) | |
631 | return ancestor->get_builder (); | |
632 | ||
633 | return nullptr; | |
634 | } | |
e7c27a73 DJ |
635 | }; |
636 | ||
094b34ac DE |
637 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
638 | This includes type_unit_group and quick_file_names. */ | |
639 | ||
640 | struct stmt_list_hash | |
641 | { | |
642 | /* The DWO unit this table is from or NULL if there is none. */ | |
643 | struct dwo_unit *dwo_unit; | |
644 | ||
645 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 646 | sect_offset line_sect_off; |
094b34ac DE |
647 | }; |
648 | ||
5989a64e | 649 | /* Each element of dwarf2_per_bfd->type_unit_groups is a pointer to |
8adb8487 TT |
650 | an object of this type. This contains elements of type unit groups |
651 | that can be shared across objfiles. The non-shareable parts are in | |
652 | type_unit_group_unshareable. */ | |
f4dc4d17 DE |
653 | |
654 | struct type_unit_group | |
655 | { | |
0186c6a7 | 656 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
657 | To simplify things we create an artificial CU that "includes" all the |
658 | type units using this stmt_list so that the rest of the code still has | |
197400e8 | 659 | a "per_cu" handle on the symtab. */ |
094b34ac DE |
660 | struct dwarf2_per_cu_data per_cu; |
661 | ||
0186c6a7 DE |
662 | /* The TUs that share this DW_AT_stmt_list entry. |
663 | This is added to while parsing type units to build partial symtabs, | |
664 | and is deleted afterwards and not used again. */ | |
a8b3b8e9 | 665 | std::vector<signatured_type *> *tus; |
f4dc4d17 | 666 | |
094b34ac DE |
667 | /* The data used to construct the hash key. */ |
668 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
669 | }; |
670 | ||
73869dc2 | 671 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
672 | |
673 | struct dwo_sections | |
674 | { | |
675 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
676 | struct dwarf2_section_info line; |
677 | struct dwarf2_section_info loc; | |
43988095 | 678 | struct dwarf2_section_info loclists; |
09262596 DE |
679 | struct dwarf2_section_info macinfo; |
680 | struct dwarf2_section_info macro; | |
d0ce17d8 | 681 | struct dwarf2_section_info rnglists; |
3019eac3 DE |
682 | struct dwarf2_section_info str; |
683 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
684 | /* In the case of a virtual DWO file, these two are unused. */ |
685 | struct dwarf2_section_info info; | |
fd5866f6 | 686 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
687 | }; |
688 | ||
c88ee1f0 | 689 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
690 | |
691 | struct dwo_unit | |
692 | { | |
693 | /* Backlink to the containing struct dwo_file. */ | |
694 | struct dwo_file *dwo_file; | |
695 | ||
696 | /* The "id" that distinguishes this CU/TU. | |
697 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
698 | Since signatures came first, we stick with it for consistency. */ | |
699 | ULONGEST signature; | |
700 | ||
701 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 702 | struct dwarf2_section_info *section; |
3019eac3 | 703 | |
9c541725 PA |
704 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
705 | sect_offset sect_off; | |
3019eac3 DE |
706 | unsigned int length; |
707 | ||
708 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
709 | cu_offset type_offset_in_tu; | |
710 | }; | |
711 | ||
73869dc2 DE |
712 | /* include/dwarf2.h defines the DWP section codes. |
713 | It defines a max value but it doesn't define a min value, which we | |
714 | use for error checking, so provide one. */ | |
715 | ||
716 | enum dwp_v2_section_ids | |
717 | { | |
718 | DW_SECT_MIN = 1 | |
719 | }; | |
720 | ||
80626a55 | 721 | /* Data for one DWO file. |
57d63ce2 DE |
722 | |
723 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
724 | appears in a DWP file). DWP files don't really have DWO files per se - | |
725 | comdat folding of types "loses" the DWO file they came from, and from | |
726 | a high level view DWP files appear to contain a mass of random types. | |
727 | However, to maintain consistency with the non-DWP case we pretend DWP | |
728 | files contain virtual DWO files, and we assign each TU with one virtual | |
729 | DWO file (generally based on the line and abbrev section offsets - | |
730 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
731 | |
732 | struct dwo_file | |
733 | { | |
51ac9db5 SM |
734 | dwo_file () = default; |
735 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
736 | ||
18a8505e | 737 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
738 | For virtual DWO files the name is constructed from the section offsets |
739 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
740 | from related CU+TUs. */ | |
51ac9db5 | 741 | const char *dwo_name = nullptr; |
0ac5b59e DE |
742 | |
743 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 744 | const char *comp_dir = nullptr; |
3019eac3 | 745 | |
80626a55 DE |
746 | /* The bfd, when the file is open. Otherwise this is NULL. |
747 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 748 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 749 | |
73869dc2 | 750 | /* The sections that make up this DWO file. |
d2854d8d | 751 | Remember that for virtual DWO files in DWP V2 or DWP V5, these are virtual |
73869dc2 | 752 | sections (for lack of a better name). */ |
51ac9db5 | 753 | struct dwo_sections sections {}; |
3019eac3 | 754 | |
33c5cd75 DB |
755 | /* The CUs in the file. |
756 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
757 | an extension to handle LLVM's Link Time Optimization output (where | |
758 | multiple source files may be compiled into a single object/dwo pair). */ | |
b0b6a987 | 759 | htab_up cus; |
3019eac3 DE |
760 | |
761 | /* Table of TUs in the file. | |
762 | Each element is a struct dwo_unit. */ | |
b0b6a987 | 763 | htab_up tus; |
3019eac3 DE |
764 | }; |
765 | ||
80626a55 DE |
766 | /* These sections are what may appear in a DWP file. */ |
767 | ||
768 | struct dwp_sections | |
769 | { | |
d2854d8d | 770 | /* These are used by all DWP versions (1, 2 and 5). */ |
80626a55 DE |
771 | struct dwarf2_section_info str; |
772 | struct dwarf2_section_info cu_index; | |
773 | struct dwarf2_section_info tu_index; | |
73869dc2 | 774 | |
d2854d8d | 775 | /* These are only used by DWP version 2 and version 5 files. |
73869dc2 DE |
776 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other |
777 | sections are referenced by section number, and are not recorded here. | |
d2854d8d CT |
778 | In DWP version 2 or 5 there is at most one copy of all these sections, |
779 | each section being (effectively) comprised of the concatenation of all of | |
780 | the individual sections that exist in the version 1 format. | |
73869dc2 DE |
781 | To keep the code simple we treat each of these concatenated pieces as a |
782 | section itself (a virtual section?). */ | |
783 | struct dwarf2_section_info abbrev; | |
784 | struct dwarf2_section_info info; | |
785 | struct dwarf2_section_info line; | |
786 | struct dwarf2_section_info loc; | |
d2854d8d | 787 | struct dwarf2_section_info loclists; |
73869dc2 DE |
788 | struct dwarf2_section_info macinfo; |
789 | struct dwarf2_section_info macro; | |
d2854d8d | 790 | struct dwarf2_section_info rnglists; |
73869dc2 DE |
791 | struct dwarf2_section_info str_offsets; |
792 | struct dwarf2_section_info types; | |
80626a55 DE |
793 | }; |
794 | ||
73869dc2 DE |
795 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
796 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 797 | |
73869dc2 | 798 | struct virtual_v1_dwo_sections |
80626a55 DE |
799 | { |
800 | struct dwarf2_section_info abbrev; | |
801 | struct dwarf2_section_info line; | |
802 | struct dwarf2_section_info loc; | |
803 | struct dwarf2_section_info macinfo; | |
804 | struct dwarf2_section_info macro; | |
805 | struct dwarf2_section_info str_offsets; | |
806 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 807 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
808 | struct dwarf2_section_info info_or_types; |
809 | }; | |
810 | ||
d2854d8d | 811 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2 or 5. |
73869dc2 DE |
812 | In version 2, the sections of the DWO files are concatenated together |
813 | and stored in one section of that name. Thus each ELF section contains | |
814 | several "virtual" sections. */ | |
815 | ||
d2854d8d | 816 | struct virtual_v2_or_v5_dwo_sections |
73869dc2 DE |
817 | { |
818 | bfd_size_type abbrev_offset; | |
819 | bfd_size_type abbrev_size; | |
820 | ||
821 | bfd_size_type line_offset; | |
822 | bfd_size_type line_size; | |
823 | ||
824 | bfd_size_type loc_offset; | |
825 | bfd_size_type loc_size; | |
826 | ||
d2854d8d CT |
827 | bfd_size_type loclists_offset; |
828 | bfd_size_type loclists_size; | |
829 | ||
73869dc2 DE |
830 | bfd_size_type macinfo_offset; |
831 | bfd_size_type macinfo_size; | |
832 | ||
833 | bfd_size_type macro_offset; | |
834 | bfd_size_type macro_size; | |
835 | ||
d2854d8d CT |
836 | bfd_size_type rnglists_offset; |
837 | bfd_size_type rnglists_size; | |
838 | ||
73869dc2 DE |
839 | bfd_size_type str_offsets_offset; |
840 | bfd_size_type str_offsets_size; | |
841 | ||
842 | /* Each DWP hash table entry records one CU or one TU. | |
843 | That is recorded here, and copied to dwo_unit.section. */ | |
844 | bfd_size_type info_or_types_offset; | |
845 | bfd_size_type info_or_types_size; | |
846 | }; | |
847 | ||
80626a55 DE |
848 | /* Contents of DWP hash tables. */ |
849 | ||
850 | struct dwp_hash_table | |
851 | { | |
73869dc2 | 852 | uint32_t version, nr_columns; |
80626a55 | 853 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
854 | const gdb_byte *hash_table, *unit_table; |
855 | union | |
856 | { | |
857 | struct | |
858 | { | |
859 | const gdb_byte *indices; | |
860 | } v1; | |
861 | struct | |
862 | { | |
863 | /* This is indexed by column number and gives the id of the section | |
864 | in that column. */ | |
865 | #define MAX_NR_V2_DWO_SECTIONS \ | |
866 | (1 /* .debug_info or .debug_types */ \ | |
867 | + 1 /* .debug_abbrev */ \ | |
868 | + 1 /* .debug_line */ \ | |
869 | + 1 /* .debug_loc */ \ | |
870 | + 1 /* .debug_str_offsets */ \ | |
871 | + 1 /* .debug_macro or .debug_macinfo */) | |
872 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
873 | const gdb_byte *offsets; | |
874 | const gdb_byte *sizes; | |
875 | } v2; | |
d2854d8d CT |
876 | struct |
877 | { | |
878 | /* This is indexed by column number and gives the id of the section | |
879 | in that column. */ | |
880 | #define MAX_NR_V5_DWO_SECTIONS \ | |
881 | (1 /* .debug_info */ \ | |
882 | + 1 /* .debug_abbrev */ \ | |
883 | + 1 /* .debug_line */ \ | |
884 | + 1 /* .debug_loclists */ \ | |
885 | + 1 /* .debug_str_offsets */ \ | |
886 | + 1 /* .debug_macro */ \ | |
887 | + 1 /* .debug_rnglists */) | |
888 | int section_ids[MAX_NR_V5_DWO_SECTIONS]; | |
889 | const gdb_byte *offsets; | |
890 | const gdb_byte *sizes; | |
891 | } v5; | |
73869dc2 | 892 | } section_pool; |
80626a55 DE |
893 | }; |
894 | ||
895 | /* Data for one DWP file. */ | |
896 | ||
897 | struct dwp_file | |
898 | { | |
400174b1 TT |
899 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
900 | : name (name_), | |
901 | dbfd (std::move (abfd)) | |
902 | { | |
903 | } | |
904 | ||
80626a55 DE |
905 | /* Name of the file. */ |
906 | const char *name; | |
907 | ||
73869dc2 | 908 | /* File format version. */ |
400174b1 | 909 | int version = 0; |
73869dc2 | 910 | |
93417882 | 911 | /* The bfd. */ |
400174b1 | 912 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
913 | |
914 | /* Section info for this file. */ | |
400174b1 | 915 | struct dwp_sections sections {}; |
80626a55 | 916 | |
57d63ce2 | 917 | /* Table of CUs in the file. */ |
400174b1 | 918 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
919 | |
920 | /* Table of TUs in the file. */ | |
400174b1 | 921 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 922 | |
19ac8c2e | 923 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
48b490f2 TT |
924 | htab_up loaded_cus; |
925 | htab_up loaded_tus; | |
80626a55 | 926 | |
73869dc2 DE |
927 | /* Table to map ELF section numbers to their sections. |
928 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
929 | unsigned int num_sections = 0; |
930 | asection **elf_sections = nullptr; | |
80626a55 DE |
931 | }; |
932 | ||
0963b4bd MS |
933 | /* Struct used to pass misc. parameters to read_die_and_children, et |
934 | al. which are used for both .debug_info and .debug_types dies. | |
935 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 936 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
937 | |
938 | struct die_reader_specs | |
939 | { | |
a32a8923 | 940 | /* The bfd of die_section. */ |
93311388 DE |
941 | bfd* abfd; |
942 | ||
943 | /* The CU of the DIE we are parsing. */ | |
944 | struct dwarf2_cu *cu; | |
945 | ||
80626a55 | 946 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
947 | struct dwo_file *dwo_file; |
948 | ||
dee91e82 | 949 | /* The section the die comes from. |
3019eac3 | 950 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
951 | struct dwarf2_section_info *die_section; |
952 | ||
953 | /* die_section->buffer. */ | |
d521ce57 | 954 | const gdb_byte *buffer; |
f664829e DE |
955 | |
956 | /* The end of the buffer. */ | |
957 | const gdb_byte *buffer_end; | |
a2ce51a0 | 958 | |
685af9cd TT |
959 | /* The abbreviation table to use when reading the DIEs. */ |
960 | struct abbrev_table *abbrev_table; | |
93311388 DE |
961 | }; |
962 | ||
c0ab21c2 TT |
963 | /* A subclass of die_reader_specs that holds storage and has complex |
964 | constructor and destructor behavior. */ | |
965 | ||
966 | class cutu_reader : public die_reader_specs | |
967 | { | |
968 | public: | |
969 | ||
ab432490 SM |
970 | cutu_reader (dwarf2_per_cu_data *this_cu, |
971 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 | 972 | struct abbrev_table *abbrev_table, |
2e671100 | 973 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
974 | bool skip_partial); |
975 | ||
976 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
ab432490 | 977 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
978 | struct dwarf2_cu *parent_cu = nullptr, |
979 | struct dwo_file *dwo_file = nullptr); | |
980 | ||
c0ab21c2 TT |
981 | DISABLE_COPY_AND_ASSIGN (cutu_reader); |
982 | ||
983 | const gdb_byte *info_ptr = nullptr; | |
984 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
985 | bool dummy_p = false; |
986 | ||
6751ebae TT |
987 | /* Release the new CU, putting it on the chain. This cannot be done |
988 | for dummy CUs. */ | |
989 | void keep (); | |
990 | ||
c0ab21c2 | 991 | private: |
9e021579 SM |
992 | void init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
993 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 994 | dwarf2_cu *existing_cu); |
c0ab21c2 TT |
995 | |
996 | struct dwarf2_per_cu_data *m_this_cu; | |
c0ab21c2 TT |
997 | std::unique_ptr<dwarf2_cu> m_new_cu; |
998 | ||
999 | /* The ordinary abbreviation table. */ | |
1000 | abbrev_table_up m_abbrev_table_holder; | |
1001 | ||
1002 | /* The DWO abbreviation table. */ | |
1003 | abbrev_table_up m_dwo_abbrev_table; | |
1004 | }; | |
dee91e82 | 1005 | |
c906108c | 1006 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1007 | need this much information. */ |
6f06d47b | 1008 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1009 | { |
6f06d47b YQ |
1010 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
1011 | ||
1012 | /* Disable assign but still keep copy ctor, which is needed | |
1013 | load_partial_dies. */ | |
1014 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1015 | ||
52356b79 YQ |
1016 | /* Adjust the partial die before generating a symbol for it. This |
1017 | function may set the is_external flag or change the DIE's | |
1018 | name. */ | |
1019 | void fixup (struct dwarf2_cu *cu); | |
1020 | ||
48fbe735 YQ |
1021 | /* Read a minimal amount of information into the minimal die |
1022 | structure. */ | |
1023 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1024 | const struct abbrev_info &abbrev, | |
1025 | const gdb_byte *info_ptr); | |
1026 | ||
7d00ffec TT |
1027 | /* Compute the name of this partial DIE. This memoizes the |
1028 | result, so it is safe to call multiple times. */ | |
1029 | const char *name (dwarf2_cu *cu); | |
1030 | ||
72bf9492 | 1031 | /* Offset of this DIE. */ |
6f06d47b | 1032 | const sect_offset sect_off; |
72bf9492 DJ |
1033 | |
1034 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1035 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1036 | |
72bf9492 | 1037 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1038 | const unsigned int has_children : 1; |
1039 | ||
72bf9492 DJ |
1040 | unsigned int is_external : 1; |
1041 | unsigned int is_declaration : 1; | |
1042 | unsigned int has_type : 1; | |
1043 | unsigned int has_specification : 1; | |
1044 | unsigned int has_pc_info : 1; | |
481860b3 | 1045 | unsigned int may_be_inlined : 1; |
72bf9492 | 1046 | |
0c1b455e TT |
1047 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1048 | unsigned int main_subprogram : 1; | |
1049 | ||
72bf9492 DJ |
1050 | /* Flag set if the SCOPE field of this structure has been |
1051 | computed. */ | |
1052 | unsigned int scope_set : 1; | |
1053 | ||
fa4028e9 JB |
1054 | /* Flag set if the DIE has a byte_size attribute. */ |
1055 | unsigned int has_byte_size : 1; | |
1056 | ||
ff908ebf AW |
1057 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1058 | unsigned int has_const_value : 1; | |
1059 | ||
98bfdba5 PA |
1060 | /* Flag set if any of the DIE's children are template arguments. */ |
1061 | unsigned int has_template_arguments : 1; | |
1062 | ||
52356b79 | 1063 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1064 | unsigned int fixup_called : 1; |
1065 | ||
36586728 TT |
1066 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1067 | unsigned int is_dwz : 1; | |
1068 | ||
1069 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1070 | unsigned int spec_is_dwz : 1; | |
1071 | ||
7d00ffec TT |
1072 | unsigned int canonical_name : 1; |
1073 | ||
72bf9492 | 1074 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1075 | sometimes a default name for unnamed DIEs. */ |
7d00ffec | 1076 | const char *raw_name = nullptr; |
72bf9492 | 1077 | |
abc72ce4 | 1078 | /* The linkage name, if present. */ |
6f06d47b | 1079 | const char *linkage_name = nullptr; |
abc72ce4 | 1080 | |
72bf9492 DJ |
1081 | /* The scope to prepend to our children. This is generally |
1082 | allocated on the comp_unit_obstack, so will disappear | |
1083 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1084 | const char *scope = nullptr; |
72bf9492 | 1085 | |
95554aad TT |
1086 | /* Some data associated with the partial DIE. The tag determines |
1087 | which field is live. */ | |
1088 | union | |
1089 | { | |
1090 | /* The location description associated with this DIE, if any. */ | |
1091 | struct dwarf_block *locdesc; | |
1092 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1093 | sect_offset sect_off; |
6f06d47b | 1094 | } d {}; |
72bf9492 DJ |
1095 | |
1096 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1097 | CORE_ADDR lowpc = 0; |
1098 | CORE_ADDR highpc = 0; | |
72bf9492 | 1099 | |
93311388 | 1100 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1101 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1102 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1103 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1104 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1105 | |
1106 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1107 | DW_AT_specification (or DW_AT_abstract_origin or | |
1108 | DW_AT_extension). */ | |
6f06d47b | 1109 | sect_offset spec_offset {}; |
72bf9492 DJ |
1110 | |
1111 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1112 | if any. */ | |
6f06d47b YQ |
1113 | struct partial_die_info *die_parent = nullptr; |
1114 | struct partial_die_info *die_child = nullptr; | |
1115 | struct partial_die_info *die_sibling = nullptr; | |
1116 | ||
1117 | friend struct partial_die_info * | |
1118 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1119 | ||
1120 | private: | |
1121 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1122 | partial_die_info (sect_offset sect_off) | |
1123 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1124 | { | |
1125 | } | |
1126 | ||
1127 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1128 | int has_children_) | |
1129 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1130 | { | |
1131 | is_external = 0; | |
1132 | is_declaration = 0; | |
1133 | has_type = 0; | |
1134 | has_specification = 0; | |
1135 | has_pc_info = 0; | |
1136 | may_be_inlined = 0; | |
1137 | main_subprogram = 0; | |
1138 | scope_set = 0; | |
1139 | has_byte_size = 0; | |
1140 | has_const_value = 0; | |
1141 | has_template_arguments = 0; | |
1142 | fixup_called = 0; | |
1143 | is_dwz = 0; | |
1144 | spec_is_dwz = 0; | |
7d00ffec | 1145 | canonical_name = 0; |
6f06d47b | 1146 | } |
c906108c SS |
1147 | }; |
1148 | ||
c906108c SS |
1149 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1150 | but this would require a corresponding change in unpack_field_as_long | |
1151 | and friends. */ | |
1152 | static int bits_per_byte = 8; | |
1153 | ||
9c6a1327 TT |
1154 | struct variant_part_builder; |
1155 | ||
1156 | /* When reading a variant, we track a bit more information about the | |
1157 | field, and store it in an object of this type. */ | |
2ddeaf8a TT |
1158 | |
1159 | struct variant_field | |
1160 | { | |
9c6a1327 TT |
1161 | int first_field = -1; |
1162 | int last_field = -1; | |
1163 | ||
1164 | /* A variant can contain other variant parts. */ | |
1165 | std::vector<variant_part_builder> variant_parts; | |
1166 | ||
2ddeaf8a TT |
1167 | /* If we see a DW_TAG_variant, then this will be set if this is the |
1168 | default branch. */ | |
9c6a1327 TT |
1169 | bool default_branch = false; |
1170 | /* If we see a DW_AT_discr_value, then this will be the discriminant | |
1171 | value. */ | |
1172 | ULONGEST discriminant_value = 0; | |
1173 | /* If we see a DW_AT_discr_list, then this is a pointer to the list | |
1174 | data. */ | |
1175 | struct dwarf_block *discr_list_data = nullptr; | |
1176 | }; | |
1177 | ||
1178 | /* This represents a DW_TAG_variant_part. */ | |
1179 | ||
1180 | struct variant_part_builder | |
1181 | { | |
1182 | /* The offset of the discriminant field. */ | |
1183 | sect_offset discriminant_offset {}; | |
1184 | ||
1185 | /* Variants that are direct children of this variant part. */ | |
1186 | std::vector<variant_field> variants; | |
1187 | ||
1188 | /* True if we're currently reading a variant. */ | |
1189 | bool processing_variant = false; | |
2ddeaf8a TT |
1190 | }; |
1191 | ||
52059ffd TT |
1192 | struct nextfield |
1193 | { | |
be2daae6 TT |
1194 | int accessibility = 0; |
1195 | int virtuality = 0; | |
9c6a1327 TT |
1196 | /* Variant parts need to find the discriminant, which is a DIE |
1197 | reference. We track the section offset of each field to make | |
1198 | this link. */ | |
1199 | sect_offset offset; | |
be2daae6 | 1200 | struct field field {}; |
52059ffd TT |
1201 | }; |
1202 | ||
1203 | struct fnfieldlist | |
1204 | { | |
be2daae6 TT |
1205 | const char *name = nullptr; |
1206 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1207 | }; |
1208 | ||
c906108c SS |
1209 | /* The routines that read and process dies for a C struct or C++ class |
1210 | pass lists of data member fields and lists of member function fields | |
1211 | in an instance of a field_info structure, as defined below. */ | |
1212 | struct field_info | |
2de01bdb SM |
1213 | { |
1214 | /* List of data member and baseclasses fields. */ | |
1215 | std::vector<struct nextfield> fields; | |
1216 | std::vector<struct nextfield> baseclasses; | |
1217 | ||
1218 | /* Set if the accessibility of one of the fields is not public. */ | |
264fc0e2 | 1219 | bool non_public_fields = false; |
2de01bdb SM |
1220 | |
1221 | /* Member function fieldlist array, contains name of possibly overloaded | |
1222 | member function, number of overloaded member functions and a pointer | |
1223 | to the head of the member function field chain. */ | |
1224 | std::vector<struct fnfieldlist> fnfieldlists; | |
1225 | ||
1226 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1227 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1228 | std::vector<struct decl_field> typedef_field_list; | |
1229 | ||
1230 | /* Nested types defined by this class and the number of elements in this | |
1231 | list. */ | |
1232 | std::vector<struct decl_field> nested_types_list; | |
1233 | ||
1234 | /* If non-null, this is the variant part we are currently | |
1235 | reading. */ | |
1236 | variant_part_builder *current_variant_part = nullptr; | |
1237 | /* This holds all the top-level variant parts attached to the type | |
1238 | we're reading. */ | |
1239 | std::vector<variant_part_builder> variant_parts; | |
1240 | ||
1241 | /* Return the total number of fields (including baseclasses). */ | |
1242 | int nfields () const | |
c5aa993b | 1243 | { |
2de01bdb SM |
1244 | return fields.size () + baseclasses.size (); |
1245 | } | |
1246 | }; | |
c906108c | 1247 | |
ae038cb0 DJ |
1248 | /* Loaded secondary compilation units are kept in memory until they |
1249 | have not been referenced for the processing of this many | |
1250 | compilation units. Set this to zero to disable caching. Cache | |
1251 | sizes of up to at least twenty will improve startup time for | |
1252 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1253 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1254 | static void |
b4f54984 DE |
1255 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1256 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1257 | { |
3e43a32a | 1258 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1259 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1260 | value); |
1261 | } | |
4390d890 | 1262 | \f |
c906108c SS |
1263 | /* local function prototypes */ |
1264 | ||
918dd910 JK |
1265 | static void dwarf2_find_base_address (struct die_info *die, |
1266 | struct dwarf2_cu *cu); | |
1267 | ||
891813be | 1268 | static dwarf2_psymtab *create_partial_symtab |
7aa104c4 SM |
1269 | (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
1270 | const char *name); | |
0018ea6f | 1271 | |
f1902523 JK |
1272 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1273 | const gdb_byte *info_ptr, | |
3e225074 | 1274 | struct die_info *type_unit_die); |
f1902523 | 1275 | |
976ca316 | 1276 | static void dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile); |
c906108c | 1277 | |
72bf9492 DJ |
1278 | static void scan_partial_symbols (struct partial_die_info *, |
1279 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1280 | int, struct dwarf2_cu *); |
c906108c | 1281 | |
72bf9492 DJ |
1282 | static void add_partial_symbol (struct partial_die_info *, |
1283 | struct dwarf2_cu *); | |
63d06c5c | 1284 | |
72bf9492 DJ |
1285 | static void add_partial_namespace (struct partial_die_info *pdi, |
1286 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1287 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1288 | |
5d7cb8df | 1289 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1290 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1291 | struct dwarf2_cu *cu); |
1292 | ||
72bf9492 DJ |
1293 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1294 | struct dwarf2_cu *cu); | |
91c24f0a | 1295 | |
bc30ff58 JB |
1296 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1297 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1298 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1299 | |
d521ce57 | 1300 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1301 | |
dee91e82 | 1302 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1303 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1304 | |
fb816e8b TV |
1305 | /* A pair of partial_die_info and compilation unit. */ |
1306 | struct cu_partial_die_info | |
1307 | { | |
1308 | /* The compilation unit of the partial_die_info. */ | |
1309 | struct dwarf2_cu *cu; | |
1310 | /* A partial_die_info. */ | |
1311 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1312 | |
1313 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1314 | : cu (cu), | |
1315 | pdi (pdi) | |
405feb71 | 1316 | { /* Nothing. */ } |
122cf0f2 AB |
1317 | |
1318 | private: | |
1319 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1320 | }; |
1321 | ||
122cf0f2 AB |
1322 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1323 | struct dwarf2_cu *); | |
72bf9492 | 1324 | |
d521ce57 TT |
1325 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1326 | struct attribute *, struct attr_abbrev *, | |
7a5f294d | 1327 | const gdb_byte *); |
18a8505e AT |
1328 | |
1329 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 1330 | struct attribute *attr, dwarf_tag tag); |
18a8505e AT |
1331 | |
1332 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1333 | |
976ca316 SM |
1334 | static sect_offset read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
1335 | dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1336 | |
ed2dc618 | 1337 | static const char *read_indirect_string |
976ca316 | 1338 | (dwarf2_per_objfile *per_objfile, bfd *, const gdb_byte *, |
ed2dc618 | 1339 | const struct comp_unit_head *, unsigned int *); |
4bdf3d34 | 1340 | |
ed2dc618 | 1341 | static const char *read_indirect_string_at_offset |
976ca316 | 1342 | (dwarf2_per_objfile *per_objfile, LONGEST str_offset); |
927aa2e7 | 1343 | |
d521ce57 TT |
1344 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1345 | const gdb_byte *, | |
3019eac3 DE |
1346 | unsigned int *); |
1347 | ||
18a8505e AT |
1348 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1349 | ULONGEST str_index); | |
1350 | ||
1351 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1352 | ULONGEST str_index); | |
3019eac3 | 1353 | |
e142c38c | 1354 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1355 | |
e142c38c DJ |
1356 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1357 | struct dwarf2_cu *); | |
c906108c | 1358 | |
7d45c7c3 | 1359 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
dda83cd7 | 1360 | struct dwarf2_cu *cu); |
7d45c7c3 | 1361 | |
a084a2a6 AT |
1362 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1363 | ||
05cf31d1 | 1364 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
dda83cd7 | 1365 | struct dwarf2_cu *cu); |
05cf31d1 | 1366 | |
e142c38c | 1367 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1368 | |
e142c38c | 1369 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1370 | struct dwarf2_cu **); |
63d06c5c | 1371 | |
9c541725 | 1372 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1373 | struct dwarf2_cu *cu); |
debd256d | 1374 | |
f3f5162e | 1375 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1376 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1377 | CORE_ADDR, int decode_mapping); |
c906108c | 1378 | |
804d2729 TT |
1379 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1380 | const char *); | |
c906108c | 1381 | |
a14ed312 | 1382 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1383 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1384 | |
ff39bb5e | 1385 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1386 | struct dwarf2_cu *); |
c906108c | 1387 | |
ff39bb5e | 1388 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1389 | struct type *type, |
1390 | const char *name, | |
1391 | struct obstack *obstack, | |
12df843f | 1392 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1393 | const gdb_byte **bytes, |
98bfdba5 | 1394 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1395 | |
57567375 TT |
1396 | static struct type *read_subrange_index_type (struct die_info *die, |
1397 | struct dwarf2_cu *cu); | |
1398 | ||
e7c27a73 | 1399 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1400 | |
b4ba55a1 JB |
1401 | static int need_gnat_info (struct dwarf2_cu *); |
1402 | ||
3e43a32a MS |
1403 | static struct type *die_descriptive_type (struct die_info *, |
1404 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1405 | |
1406 | static void set_descriptive_type (struct type *, struct die_info *, | |
1407 | struct dwarf2_cu *); | |
1408 | ||
e7c27a73 DJ |
1409 | static struct type *die_containing_type (struct die_info *, |
1410 | struct dwarf2_cu *); | |
c906108c | 1411 | |
ff39bb5e | 1412 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1413 | struct dwarf2_cu *); |
c906108c | 1414 | |
f792889a | 1415 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1416 | |
673bfd45 DE |
1417 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1418 | ||
0d5cff50 | 1419 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1420 | |
6e70227d | 1421 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1422 | const char *suffix, int physname, |
1423 | struct dwarf2_cu *cu); | |
63d06c5c | 1424 | |
e7c27a73 | 1425 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1426 | |
348e048f DE |
1427 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1428 | ||
e7c27a73 | 1429 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1430 | |
e7c27a73 | 1431 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1432 | |
96408a79 SA |
1433 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1434 | ||
71a3c369 TT |
1435 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1436 | ||
41144253 | 1437 | /* Return the .debug_loclists section to use for cu. */ |
1438 | static struct dwarf2_section_info *cu_debug_loc_section (struct dwarf2_cu *cu); | |
1439 | ||
d0ce17d8 CT |
1440 | /* Return the .debug_rnglists section to use for cu. */ |
1441 | static struct dwarf2_section_info *cu_debug_rnglists_section | |
1442 | (struct dwarf2_cu *cu, dwarf_tag tag); | |
1443 | ||
3a2b436a | 1444 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1445 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1446 | enum pc_bounds_kind |
1447 | { | |
e385593e | 1448 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1449 | PC_BOUNDS_NOT_PRESENT, |
1450 | ||
e385593e JK |
1451 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1452 | were present but they do not form a valid range of PC addresses. */ | |
1453 | PC_BOUNDS_INVALID, | |
1454 | ||
3a2b436a JK |
1455 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1456 | PC_BOUNDS_RANGES, | |
1457 | ||
1458 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1459 | PC_BOUNDS_HIGH_LOW, | |
1460 | }; | |
1461 | ||
1462 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1463 | CORE_ADDR *, CORE_ADDR *, | |
1464 | struct dwarf2_cu *, | |
891813be | 1465 | dwarf2_psymtab *); |
c906108c | 1466 | |
fae299cd DC |
1467 | static void get_scope_pc_bounds (struct die_info *, |
1468 | CORE_ADDR *, CORE_ADDR *, | |
1469 | struct dwarf2_cu *); | |
1470 | ||
801e3a5b | 1471 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
dda83cd7 | 1472 | CORE_ADDR, struct dwarf2_cu *); |
801e3a5b | 1473 | |
a14ed312 | 1474 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1475 | struct dwarf2_cu *); |
c906108c | 1476 | |
a14ed312 | 1477 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1478 | struct type *, struct dwarf2_cu *); |
c906108c | 1479 | |
a14ed312 | 1480 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1481 | struct die_info *, struct type *, |
e7c27a73 | 1482 | struct dwarf2_cu *); |
c906108c | 1483 | |
a14ed312 | 1484 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1485 | struct type *, |
1486 | struct dwarf2_cu *); | |
c906108c | 1487 | |
134d01f1 | 1488 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1489 | |
e7c27a73 | 1490 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1491 | |
e7c27a73 | 1492 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1493 | |
5d7cb8df JK |
1494 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1495 | ||
804d2729 | 1496 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1497 | |
27aa8d6a SW |
1498 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1499 | ||
74921315 KS |
1500 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1501 | ||
f55ee35c JK |
1502 | static struct type *read_module_type (struct die_info *die, |
1503 | struct dwarf2_cu *cu); | |
1504 | ||
38d518c9 | 1505 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1506 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1507 | |
134d01f1 | 1508 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1509 | |
7d79de9a TT |
1510 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *, |
1511 | bool * = nullptr); | |
c906108c | 1512 | |
6e70227d | 1513 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1514 | struct dwarf2_cu *); |
1515 | ||
bf6af496 | 1516 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1517 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1518 | struct die_info *); |
639d11d3 | 1519 | |
dee91e82 | 1520 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1521 | const gdb_byte *info_ptr, |
1522 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1523 | struct die_info *parent); |
1524 | ||
d521ce57 TT |
1525 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1526 | struct die_info **, const gdb_byte *, | |
3e225074 | 1527 | int); |
3019eac3 | 1528 | |
d521ce57 | 1529 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1530 | struct die_info **, const gdb_byte *); |
93311388 | 1531 | |
e7c27a73 | 1532 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1533 | |
15d034d0 | 1534 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
be1e3d3e | 1535 | struct objfile *); |
71c25dea | 1536 | |
15d034d0 | 1537 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1538 | |
15d034d0 | 1539 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1540 | struct die_info *die, |
1541 | struct dwarf2_cu *cu); | |
1542 | ||
ca69b9e6 DE |
1543 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1544 | struct dwarf2_cu *cu); | |
1545 | ||
e142c38c | 1546 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1547 | struct dwarf2_cu **); |
9219021c | 1548 | |
d97bc12b DE |
1549 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1550 | ||
1551 | static void dump_die_for_error (struct die_info *); | |
1552 | ||
1553 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1554 | struct die_info *); | |
c906108c | 1555 | |
d97bc12b | 1556 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1557 | |
51545339 | 1558 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1559 | struct dwarf2_cu *); |
c906108c | 1560 | |
348e048f | 1561 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1562 | const struct attribute *, |
348e048f DE |
1563 | struct dwarf2_cu **); |
1564 | ||
10b3939b | 1565 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1566 | const struct attribute *, |
f2f0e013 | 1567 | struct dwarf2_cu **); |
c906108c | 1568 | |
348e048f | 1569 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1570 | const struct attribute *, |
348e048f DE |
1571 | struct dwarf2_cu **); |
1572 | ||
ac9ec31b DE |
1573 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1574 | struct dwarf2_cu *); | |
1575 | ||
1576 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1577 | const struct attribute *, |
ac9ec31b DE |
1578 | struct dwarf2_cu *); |
1579 | ||
ab432490 SM |
1580 | static void load_full_type_unit (dwarf2_per_cu_data *per_cu, |
1581 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1582 | |
ab432490 SM |
1583 | static void read_signatured_type (signatured_type *sig_type, |
1584 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1585 | |
63e43d3a PMR |
1586 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1587 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1588 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1589 | |
c906108c SS |
1590 | /* memory allocation interface */ |
1591 | ||
7b5a2f43 | 1592 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1593 | |
b60c80d6 | 1594 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1595 | |
43f3e411 | 1596 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1597 | |
8cf6f0b1 TT |
1598 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1599 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1600 | const struct attribute *attr); |
8cf6f0b1 | 1601 | |
ff39bb5e | 1602 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1603 | struct symbol *sym, |
f1e6e072 TT |
1604 | struct dwarf2_cu *cu, |
1605 | int is_block); | |
4c2df51b | 1606 | |
d521ce57 TT |
1607 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1608 | const gdb_byte *info_ptr, | |
1609 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1610 | |
72bf9492 DJ |
1611 | static hashval_t partial_die_hash (const void *item); |
1612 | ||
1613 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1614 | ||
ae038cb0 | 1615 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 | 1616 | (sect_offset sect_off, unsigned int offset_in_dwz, |
976ca316 | 1617 | dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1618 | |
9816fde3 | 1619 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1620 | struct die_info *comp_unit_die, |
1621 | enum language pretend_language); | |
93311388 | 1622 | |
f792889a | 1623 | static struct type *set_die_type (struct die_info *, struct type *, |
57567375 | 1624 | struct dwarf2_cu *, bool = false); |
1c379e20 | 1625 | |
976ca316 | 1626 | static void create_all_comp_units (dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1627 | |
976ca316 | 1628 | static int create_all_type_units (dwarf2_per_objfile *per_objfile); |
1fd400ff | 1629 | |
ab432490 SM |
1630 | static void load_full_comp_unit (dwarf2_per_cu_data *per_cu, |
1631 | dwarf2_per_objfile *per_objfile, | |
4a636814 | 1632 | dwarf2_cu *existing_cu, |
ab432490 SM |
1633 | bool skip_partial, |
1634 | enum language pretend_language); | |
10b3939b | 1635 | |
8fc0b21d | 1636 | static void process_full_comp_unit (dwarf2_cu *cu, |
47b14e86 | 1637 | enum language pretend_language); |
10b3939b | 1638 | |
8fc0b21d | 1639 | static void process_full_type_unit (dwarf2_cu *cu, |
47b14e86 | 1640 | enum language pretend_language); |
f4dc4d17 | 1641 | |
10b3939b DJ |
1642 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1643 | struct dwarf2_per_cu_data *); | |
1644 | ||
ae038cb0 DJ |
1645 | static void dwarf2_mark (struct dwarf2_cu *); |
1646 | ||
b64f50a1 | 1647 | static struct type *get_die_type_at_offset (sect_offset, |
aa66c379 SM |
1648 | dwarf2_per_cu_data *per_cu, |
1649 | dwarf2_per_objfile *per_objfile); | |
673bfd45 | 1650 | |
f792889a | 1651 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1652 | |
120ce1b5 SM |
1653 | static void queue_comp_unit (dwarf2_per_cu_data *per_cu, |
1654 | dwarf2_per_objfile *per_objfile, | |
95554aad TT |
1655 | enum language pretend_language); |
1656 | ||
976ca316 | 1657 | static void process_queue (dwarf2_per_objfile *per_objfile); |
9291a0cd | 1658 | |
b303c6f6 AB |
1659 | /* Class, the destructor of which frees all allocated queue entries. This |
1660 | will only have work to do if an error was thrown while processing the | |
1661 | dwarf. If no error was thrown then the queue entries should have all | |
1662 | been processed, and freed, as we went along. */ | |
1663 | ||
1664 | class dwarf2_queue_guard | |
1665 | { | |
1666 | public: | |
39856def TT |
1667 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1668 | : m_per_objfile (per_objfile) | |
1669 | { | |
1670 | } | |
b303c6f6 AB |
1671 | |
1672 | /* Free any entries remaining on the queue. There should only be | |
1673 | entries left if we hit an error while processing the dwarf. */ | |
1674 | ~dwarf2_queue_guard () | |
1675 | { | |
39856def TT |
1676 | /* Ensure that no memory is allocated by the queue. */ |
1677 | std::queue<dwarf2_queue_item> empty; | |
5989a64e | 1678 | std::swap (m_per_objfile->per_bfd->queue, empty); |
39856def | 1679 | } |
b303c6f6 | 1680 | |
39856def | 1681 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1682 | |
39856def TT |
1683 | private: |
1684 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1685 | }; |
1686 | ||
39856def TT |
1687 | dwarf2_queue_item::~dwarf2_queue_item () |
1688 | { | |
1689 | /* Anything still marked queued is likely to be in an | |
1690 | inconsistent state, so discard it. */ | |
1691 | if (per_cu->queued) | |
1692 | { | |
7188ed02 | 1693 | per_objfile->remove_cu (per_cu); |
39856def TT |
1694 | per_cu->queued = 0; |
1695 | } | |
1696 | } | |
1697 | ||
d721ba37 PA |
1698 | /* The return type of find_file_and_directory. Note, the enclosed |
1699 | string pointers are only valid while this object is valid. */ | |
1700 | ||
1701 | struct file_and_directory | |
1702 | { | |
1703 | /* The filename. This is never NULL. */ | |
1704 | const char *name; | |
1705 | ||
1706 | /* The compilation directory. NULL if not known. If we needed to | |
1707 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1708 | points directly to the DW_AT_comp_dir string attribute owned by | |
1709 | the obstack that owns the DIE. */ | |
1710 | const char *comp_dir; | |
1711 | ||
1712 | /* If we needed to build a new string for comp_dir, this is what | |
1713 | owns the storage. */ | |
1714 | std::string comp_dir_storage; | |
1715 | }; | |
1716 | ||
1717 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1718 | struct dwarf2_cu *cu); | |
9291a0cd | 1719 | |
298e9637 | 1720 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1721 | |
298e9637 | 1722 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1723 | |
57d63ce2 | 1724 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
976ca316 SM |
1725 | (dwarf2_per_objfile *per_objfile, struct dwp_file *dwp_file, |
1726 | const char *comp_dir, ULONGEST signature, int is_debug_types); | |
a2ce51a0 | 1727 | |
976ca316 | 1728 | static struct dwp_file *get_dwp_file (dwarf2_per_objfile *per_objfile); |
a2ce51a0 | 1729 | |
3019eac3 | 1730 | static struct dwo_unit *lookup_dwo_comp_unit |
4ab09049 SM |
1731 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
1732 | ULONGEST signature); | |
3019eac3 DE |
1733 | |
1734 | static struct dwo_unit *lookup_dwo_type_unit | |
4ab09049 | 1735 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir); |
3019eac3 | 1736 | |
1b555f17 | 1737 | static void queue_and_load_all_dwo_tus (dwarf2_cu *cu); |
89e63ee4 | 1738 | |
263db9a1 TT |
1739 | /* A unique pointer to a dwo_file. */ |
1740 | ||
51ac9db5 | 1741 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1742 | |
976ca316 | 1743 | static void process_cu_includes (dwarf2_per_objfile *per_objfile); |
95554aad | 1744 | |
1b80a9fa | 1745 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1746 | |
1747 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1748 | \f |
1749 | /* Various complaints about symbol reading that don't abort the process. */ | |
1750 | ||
4390d890 DE |
1751 | static void |
1752 | dwarf2_debug_line_missing_file_complaint (void) | |
1753 | { | |
b98664d3 | 1754 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1755 | } |
1756 | ||
1757 | static void | |
1758 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1759 | { | |
b98664d3 | 1760 | complaint (_(".debug_line section has line " |
4390d890 DE |
1761 | "program sequence without an end")); |
1762 | } | |
1763 | ||
1764 | static void | |
1765 | dwarf2_complex_location_expr_complaint (void) | |
1766 | { | |
b98664d3 | 1767 | complaint (_("location expression too complex")); |
4390d890 DE |
1768 | } |
1769 | ||
1770 | static void | |
1771 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1772 | int arg3) | |
1773 | { | |
b98664d3 | 1774 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1775 | arg1, arg2, arg3); |
1776 | } | |
1777 | ||
4390d890 DE |
1778 | static void |
1779 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1780 | { | |
b98664d3 | 1781 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1782 | arg1, arg2); |
1783 | } | |
527f3840 JK |
1784 | |
1785 | /* Hash function for line_header_hash. */ | |
1786 | ||
1787 | static hashval_t | |
1788 | line_header_hash (const struct line_header *ofs) | |
1789 | { | |
9c541725 | 1790 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1791 | } |
1792 | ||
1793 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1794 | ||
1795 | static hashval_t | |
1796 | line_header_hash_voidp (const void *item) | |
1797 | { | |
9a3c8263 | 1798 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1799 | |
1800 | return line_header_hash (ofs); | |
1801 | } | |
1802 | ||
1803 | /* Equality function for line_header_hash. */ | |
1804 | ||
1805 | static int | |
1806 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1807 | { | |
9a3c8263 SM |
1808 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1809 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1810 | |
9c541725 | 1811 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1812 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1813 | } | |
1814 | ||
4390d890 | 1815 | \f |
9291a0cd | 1816 | |
330cdd98 PA |
1817 | /* See declaration. */ |
1818 | ||
5989a64e SM |
1819 | dwarf2_per_bfd::dwarf2_per_bfd (bfd *obfd, const dwarf2_debug_sections *names, |
1820 | bool can_copy_) | |
c3699833 SM |
1821 | : obfd (obfd), |
1822 | can_copy (can_copy_) | |
330cdd98 PA |
1823 | { |
1824 | if (names == NULL) | |
1825 | names = &dwarf2_elf_names; | |
1826 | ||
330cdd98 PA |
1827 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) |
1828 | locate_sections (obfd, sec, *names); | |
1829 | } | |
1830 | ||
5989a64e | 1831 | dwarf2_per_bfd::~dwarf2_per_bfd () |
330cdd98 | 1832 | { |
b76e467d | 1833 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 1834 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1835 | |
b2bdb8cf | 1836 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 1837 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 1838 | |
5989a64e | 1839 | /* Everything else should be on this->obstack. */ |
330cdd98 PA |
1840 | } |
1841 | ||
7188ed02 | 1842 | /* See read.h. */ |
330cdd98 PA |
1843 | |
1844 | void | |
7188ed02 | 1845 | dwarf2_per_objfile::remove_all_cus () |
330cdd98 | 1846 | { |
7188ed02 SM |
1847 | for (auto pair : m_dwarf2_cus) |
1848 | delete pair.second; | |
330cdd98 | 1849 | |
7188ed02 | 1850 | m_dwarf2_cus.clear (); |
330cdd98 PA |
1851 | } |
1852 | ||
11ed8cad TT |
1853 | /* A helper class that calls free_cached_comp_units on |
1854 | destruction. */ | |
1855 | ||
1856 | class free_cached_comp_units | |
1857 | { | |
1858 | public: | |
1859 | ||
1860 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1861 | : m_per_objfile (per_objfile) | |
1862 | { | |
1863 | } | |
1864 | ||
1865 | ~free_cached_comp_units () | |
1866 | { | |
7188ed02 | 1867 | m_per_objfile->remove_all_cus (); |
11ed8cad TT |
1868 | } |
1869 | ||
1870 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1871 | ||
1872 | private: | |
1873 | ||
1874 | dwarf2_per_objfile *m_per_objfile; | |
1875 | }; | |
1876 | ||
af758d11 SM |
1877 | /* See read.h. */ |
1878 | ||
1879 | bool | |
1880 | dwarf2_per_objfile::symtab_set_p (const dwarf2_per_cu_data *per_cu) const | |
1881 | { | |
1882 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1883 | ||
1884 | return this->m_symtabs[per_cu->index] != nullptr; | |
1885 | } | |
1886 | ||
1887 | /* See read.h. */ | |
1888 | ||
1889 | compunit_symtab * | |
1890 | dwarf2_per_objfile::get_symtab (const dwarf2_per_cu_data *per_cu) const | |
1891 | { | |
1892 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1893 | ||
1894 | return this->m_symtabs[per_cu->index]; | |
1895 | } | |
1896 | ||
1897 | /* See read.h. */ | |
1898 | ||
1899 | void | |
1900 | dwarf2_per_objfile::set_symtab (const dwarf2_per_cu_data *per_cu, | |
1901 | compunit_symtab *symtab) | |
1902 | { | |
1903 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1904 | gdb_assert (this->m_symtabs[per_cu->index] == nullptr); | |
1905 | ||
1906 | this->m_symtabs[per_cu->index] = symtab; | |
1907 | } | |
1908 | ||
c906108c | 1909 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1910 | information and return true if we have enough to do something. |
1911 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1912 | ELF names are used. CAN_COPY is true for formats where symbol |
1913 | interposition is possible and so symbol values must follow copy | |
1914 | relocation rules. */ | |
c906108c SS |
1915 | |
1916 | int | |
251d32d9 | 1917 | dwarf2_has_info (struct objfile *objfile, |
dda83cd7 | 1918 | const struct dwarf2_debug_sections *names, |
4b610737 | 1919 | bool can_copy) |
c906108c | 1920 | { |
97cbe998 SDJ |
1921 | if (objfile->flags & OBJF_READNEVER) |
1922 | return 0; | |
1923 | ||
976ca316 | 1924 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 1925 | |
976ca316 | 1926 | if (per_objfile == NULL) |
5989a64e | 1927 | { |
17ee85fc TT |
1928 | dwarf2_per_bfd *per_bfd; |
1929 | ||
1930 | /* We can share a "dwarf2_per_bfd" with other objfiles if the BFD | |
dda83cd7 | 1931 | doesn't require relocations and if there aren't partial symbols |
17ee85fc TT |
1932 | from some other reader. */ |
1933 | if (!objfile_has_partial_symbols (objfile) | |
1934 | && !gdb_bfd_requires_relocations (objfile->obfd)) | |
1935 | { | |
1936 | /* See if one has been created for this BFD yet. */ | |
1937 | per_bfd = dwarf2_per_bfd_bfd_data_key.get (objfile->obfd); | |
1938 | ||
1939 | if (per_bfd == nullptr) | |
1940 | { | |
1941 | /* No, create it now. */ | |
1942 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
1943 | dwarf2_per_bfd_bfd_data_key.set (objfile->obfd, per_bfd); | |
1944 | } | |
1945 | } | |
1946 | else | |
1947 | { | |
1948 | /* No sharing possible, create one specifically for this objfile. */ | |
1949 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
1950 | dwarf2_per_bfd_objfile_data_key.set (objfile, per_bfd); | |
1951 | } | |
5989a64e | 1952 | |
976ca316 | 1953 | per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, per_bfd); |
5989a64e | 1954 | } |
5bfd760d | 1955 | |
976ca316 SM |
1956 | return (!per_objfile->per_bfd->info.is_virtual |
1957 | && per_objfile->per_bfd->info.s.section != NULL | |
1958 | && !per_objfile->per_bfd->abbrev.is_virtual | |
1959 | && per_objfile->per_bfd->abbrev.s.section != NULL); | |
73869dc2 DE |
1960 | } |
1961 | ||
251d32d9 TG |
1962 | /* When loading sections, we look either for uncompressed section or for |
1963 | compressed section names. */ | |
233a11ab CS |
1964 | |
1965 | static int | |
251d32d9 | 1966 | section_is_p (const char *section_name, |
dda83cd7 | 1967 | const struct dwarf2_section_names *names) |
233a11ab | 1968 | { |
251d32d9 TG |
1969 | if (names->normal != NULL |
1970 | && strcmp (section_name, names->normal) == 0) | |
1971 | return 1; | |
1972 | if (names->compressed != NULL | |
1973 | && strcmp (section_name, names->compressed) == 0) | |
1974 | return 1; | |
1975 | return 0; | |
233a11ab CS |
1976 | } |
1977 | ||
330cdd98 | 1978 | /* See declaration. */ |
c906108c | 1979 | |
330cdd98 | 1980 | void |
5989a64e SM |
1981 | dwarf2_per_bfd::locate_sections (bfd *abfd, asection *sectp, |
1982 | const dwarf2_debug_sections &names) | |
c906108c | 1983 | { |
fd361982 | 1984 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 1985 | |
dc7650b8 JK |
1986 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1987 | { | |
1988 | } | |
950b7495 KS |
1989 | else if (elf_section_data (sectp)->this_hdr.sh_size |
1990 | > bfd_get_file_size (abfd)) | |
1991 | { | |
1992 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
1993 | warning (_("Discarding section %s which has a section size (%s" | |
1994 | ") larger than the file size [in module %s]"), | |
1995 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
1996 | bfd_get_filename (abfd)); | |
1997 | } | |
330cdd98 | 1998 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 1999 | { |
330cdd98 | 2000 | this->info.s.section = sectp; |
fd361982 | 2001 | this->info.size = bfd_section_size (sectp); |
c906108c | 2002 | } |
330cdd98 | 2003 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 2004 | { |
330cdd98 | 2005 | this->abbrev.s.section = sectp; |
fd361982 | 2006 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 2007 | } |
330cdd98 | 2008 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 2009 | { |
330cdd98 | 2010 | this->line.s.section = sectp; |
fd361982 | 2011 | this->line.size = bfd_section_size (sectp); |
c906108c | 2012 | } |
330cdd98 | 2013 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 2014 | { |
330cdd98 | 2015 | this->loc.s.section = sectp; |
fd361982 | 2016 | this->loc.size = bfd_section_size (sectp); |
c906108c | 2017 | } |
330cdd98 | 2018 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 2019 | { |
330cdd98 | 2020 | this->loclists.s.section = sectp; |
fd361982 | 2021 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 2022 | } |
330cdd98 | 2023 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2024 | { |
330cdd98 | 2025 | this->macinfo.s.section = sectp; |
fd361982 | 2026 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 2027 | } |
330cdd98 | 2028 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2029 | { |
330cdd98 | 2030 | this->macro.s.section = sectp; |
fd361982 | 2031 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 2032 | } |
330cdd98 | 2033 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2034 | { |
330cdd98 | 2035 | this->str.s.section = sectp; |
fd361982 | 2036 | this->str.size = bfd_section_size (sectp); |
c906108c | 2037 | } |
18a8505e AT |
2038 | else if (section_is_p (sectp->name, &names.str_offsets)) |
2039 | { | |
2040 | this->str_offsets.s.section = sectp; | |
2041 | this->str_offsets.size = bfd_section_size (sectp); | |
2042 | } | |
330cdd98 | 2043 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2044 | { |
330cdd98 | 2045 | this->line_str.s.section = sectp; |
fd361982 | 2046 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 2047 | } |
330cdd98 | 2048 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2049 | { |
330cdd98 | 2050 | this->addr.s.section = sectp; |
fd361982 | 2051 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 2052 | } |
330cdd98 | 2053 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2054 | { |
330cdd98 | 2055 | this->frame.s.section = sectp; |
fd361982 | 2056 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 2057 | } |
330cdd98 | 2058 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2059 | { |
330cdd98 | 2060 | this->eh_frame.s.section = sectp; |
fd361982 | 2061 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 2062 | } |
330cdd98 | 2063 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2064 | { |
330cdd98 | 2065 | this->ranges.s.section = sectp; |
fd361982 | 2066 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 2067 | } |
330cdd98 | 2068 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2069 | { |
330cdd98 | 2070 | this->rnglists.s.section = sectp; |
fd361982 | 2071 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 2072 | } |
330cdd98 | 2073 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2074 | { |
8b70b953 TT |
2075 | struct dwarf2_section_info type_section; |
2076 | ||
2077 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2078 | type_section.s.section = sectp; |
fd361982 | 2079 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2080 | |
fd5866f6 | 2081 | this->types.push_back (type_section); |
348e048f | 2082 | } |
330cdd98 | 2083 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2084 | { |
330cdd98 | 2085 | this->gdb_index.s.section = sectp; |
fd361982 | 2086 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2087 | } |
927aa2e7 JK |
2088 | else if (section_is_p (sectp->name, &names.debug_names)) |
2089 | { | |
2090 | this->debug_names.s.section = sectp; | |
fd361982 | 2091 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
2092 | } |
2093 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2094 | { | |
2095 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2096 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2097 | } |
dce234bc | 2098 | |
fd361982 AM |
2099 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2100 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2101 | this->has_section_at_zero = true; |
c906108c SS |
2102 | } |
2103 | ||
dce234bc | 2104 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2105 | SECTION_NAME. */ |
af34e669 | 2106 | |
dce234bc | 2107 | void |
3017a003 | 2108 | dwarf2_get_section_info (struct objfile *objfile, |
dda83cd7 SM |
2109 | enum dwarf2_section_enum sect, |
2110 | asection **sectp, const gdb_byte **bufp, | |
2111 | bfd_size_type *sizep) | |
dce234bc | 2112 | { |
976ca316 | 2113 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
dce234bc | 2114 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2115 | |
2116 | /* We may see an objfile without any DWARF, in which case we just | |
2117 | return nothing. */ | |
976ca316 | 2118 | if (per_objfile == NULL) |
a3b2a86b TT |
2119 | { |
2120 | *sectp = NULL; | |
2121 | *bufp = NULL; | |
2122 | *sizep = 0; | |
2123 | return; | |
2124 | } | |
3017a003 TG |
2125 | switch (sect) |
2126 | { | |
2127 | case DWARF2_DEBUG_FRAME: | |
976ca316 | 2128 | info = &per_objfile->per_bfd->frame; |
3017a003 TG |
2129 | break; |
2130 | case DWARF2_EH_FRAME: | |
976ca316 | 2131 | info = &per_objfile->per_bfd->eh_frame; |
3017a003 TG |
2132 | break; |
2133 | default: | |
2134 | gdb_assert_not_reached ("unexpected section"); | |
2135 | } | |
dce234bc | 2136 | |
96b79293 | 2137 | info->read (objfile); |
dce234bc | 2138 | |
96b79293 | 2139 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2140 | *bufp = info->buffer; |
2141 | *sizep = info->size; | |
2142 | } | |
2143 | ||
36586728 TT |
2144 | /* A helper function to find the sections for a .dwz file. */ |
2145 | ||
2146 | static void | |
5bb6e9dd | 2147 | locate_dwz_sections (bfd *abfd, asection *sectp, dwz_file *dwz_file) |
36586728 | 2148 | { |
36586728 TT |
2149 | /* Note that we only support the standard ELF names, because .dwz |
2150 | is ELF-only (at the time of writing). */ | |
2151 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2152 | { | |
049412e3 | 2153 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2154 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2155 | } |
2156 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2157 | { | |
049412e3 | 2158 | dwz_file->info.s.section = sectp; |
fd361982 | 2159 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2160 | } |
2161 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2162 | { | |
049412e3 | 2163 | dwz_file->str.s.section = sectp; |
fd361982 | 2164 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2165 | } |
2166 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2167 | { | |
049412e3 | 2168 | dwz_file->line.s.section = sectp; |
fd361982 | 2169 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2170 | } |
2171 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2172 | { | |
049412e3 | 2173 | dwz_file->macro.s.section = sectp; |
fd361982 | 2174 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2175 | } |
2ec9a5e0 TT |
2176 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2177 | { | |
049412e3 | 2178 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2179 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2180 | } |
927aa2e7 JK |
2181 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2182 | { | |
2183 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2184 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2185 | } |
36586728 TT |
2186 | } |
2187 | ||
2bf3b79d SDJ |
2188 | /* Attempt to find a .dwz file (whose full path is represented by |
2189 | FILENAME) in all of the specified debug file directories provided. | |
2190 | ||
2191 | Return the equivalent gdb_bfd_ref_ptr of the .dwz file found, or | |
2192 | nullptr if it could not find anything. */ | |
2193 | ||
2194 | static gdb_bfd_ref_ptr | |
2195 | dwz_search_other_debugdirs (std::string &filename, bfd_byte *buildid, | |
2196 | size_t buildid_len) | |
2197 | { | |
2198 | /* Let's assume that the path represented by FILENAME has the | |
2199 | "/.dwz/" subpath in it. This is what (most) GNU/Linux | |
2200 | distributions do, anyway. */ | |
2201 | size_t dwz_pos = filename.find ("/.dwz/"); | |
2202 | ||
2203 | if (dwz_pos == std::string::npos) | |
2204 | return nullptr; | |
2205 | ||
2206 | /* This is an obvious assertion, but it's here more to educate | |
2207 | future readers of this code that FILENAME at DWZ_POS *must* | |
2208 | contain a directory separator. */ | |
2209 | gdb_assert (IS_DIR_SEPARATOR (filename[dwz_pos])); | |
2210 | ||
2211 | gdb_bfd_ref_ptr dwz_bfd; | |
2212 | std::vector<gdb::unique_xmalloc_ptr<char>> debugdir_vec | |
2213 | = dirnames_to_char_ptr_vec (debug_file_directory); | |
2214 | ||
2215 | for (const gdb::unique_xmalloc_ptr<char> &debugdir : debugdir_vec) | |
2216 | { | |
2217 | /* The idea is to iterate over the | |
2218 | debug file directories provided by the user and | |
2219 | replace the hard-coded path in the "filename" by each | |
2220 | debug-file-directory. | |
2221 | ||
2222 | For example, suppose that filename is: | |
2223 | ||
2224 | /usr/lib/debug/.dwz/foo.dwz | |
2225 | ||
2226 | And suppose that we have "$HOME/bar" as the | |
2227 | debug-file-directory. We would then adjust filename | |
2228 | to look like: | |
2229 | ||
2230 | $HOME/bar/.dwz/foo.dwz | |
2231 | ||
2232 | which would hopefully allow us to find the alt debug | |
2233 | file. */ | |
2234 | std::string ddir = debugdir.get (); | |
2235 | ||
2236 | if (ddir.empty ()) | |
2237 | continue; | |
2238 | ||
2239 | /* Make sure the current debug-file-directory ends with a | |
2240 | directory separator. This is needed because, if FILENAME | |
2241 | contains something like "/usr/lib/abcde/.dwz/foo.dwz" and | |
2242 | DDIR is "/usr/lib/abc", then could wrongfully skip it | |
2243 | below. */ | |
2244 | if (!IS_DIR_SEPARATOR (ddir.back ())) | |
2245 | ddir += SLASH_STRING; | |
2246 | ||
2247 | /* Check whether the beginning of FILENAME is DDIR. If it is, | |
2248 | then we are dealing with a file which we already attempted to | |
2249 | open before, so we just skip it and continue processing the | |
2250 | remaining debug file directories. */ | |
2251 | if (filename.size () > ddir.size () | |
2252 | && filename.compare (0, ddir.size (), ddir) == 0) | |
2253 | continue; | |
2254 | ||
2255 | /* Replace FILENAME's default debug-file-directory with | |
2256 | DDIR. */ | |
2257 | std::string new_filename = ddir + &filename[dwz_pos + 1]; | |
2258 | ||
2259 | dwz_bfd = gdb_bfd_open (new_filename.c_str (), gnutarget); | |
2260 | ||
2261 | if (dwz_bfd == nullptr) | |
2262 | continue; | |
2263 | ||
2264 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) | |
2265 | { | |
2266 | dwz_bfd.reset (nullptr); | |
2267 | continue; | |
2268 | } | |
2269 | ||
2270 | /* Found it. */ | |
2271 | break; | |
2272 | } | |
2273 | ||
2274 | return dwz_bfd; | |
2275 | } | |
2276 | ||
c4973306 | 2277 | /* See dwarf2read.h. */ |
36586728 | 2278 | |
c4973306 | 2279 | struct dwz_file * |
c3699833 | 2280 | dwarf2_get_dwz_file (dwarf2_per_bfd *per_bfd) |
36586728 | 2281 | { |
acd13123 | 2282 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2283 | size_t buildid_len; |
2284 | bfd_byte *buildid; | |
36586728 | 2285 | |
c3699833 SM |
2286 | if (per_bfd->dwz_file != NULL) |
2287 | return per_bfd->dwz_file.get (); | |
36586728 | 2288 | |
4db1a1dc | 2289 | bfd_set_error (bfd_error_no_error); |
791afaa2 | 2290 | gdb::unique_xmalloc_ptr<char> data |
c3699833 | 2291 | (bfd_get_alt_debug_link_info (per_bfd->obfd, |
791afaa2 | 2292 | &buildid_len_arg, &buildid)); |
4db1a1dc TT |
2293 | if (data == NULL) |
2294 | { | |
2295 | if (bfd_get_error () == bfd_error_no_error) | |
2296 | return NULL; | |
2297 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2298 | bfd_errmsg (bfd_get_error ())); | |
2299 | } | |
791afaa2 TT |
2300 | |
2301 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2302 | |
acd13123 TT |
2303 | buildid_len = (size_t) buildid_len_arg; |
2304 | ||
2bf3b79d | 2305 | std::string filename = data.get (); |
d721ba37 | 2306 | |
2bf3b79d | 2307 | if (!IS_ABSOLUTE_PATH (filename.c_str ())) |
36586728 | 2308 | { |
14278e1f | 2309 | gdb::unique_xmalloc_ptr<char> abs |
c3699833 | 2310 | = gdb_realpath (bfd_get_filename (per_bfd->obfd)); |
36586728 | 2311 | |
2bf3b79d | 2312 | filename = ldirname (abs.get ()) + SLASH_STRING + filename; |
36586728 TT |
2313 | } |
2314 | ||
dc294be5 TT |
2315 | /* First try the file name given in the section. If that doesn't |
2316 | work, try to use the build-id instead. */ | |
2bf3b79d | 2317 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename.c_str (), gnutarget)); |
dc294be5 | 2318 | if (dwz_bfd != NULL) |
36586728 | 2319 | { |
192b62ce | 2320 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2321 | dwz_bfd.reset (nullptr); |
36586728 TT |
2322 | } |
2323 | ||
dc294be5 TT |
2324 | if (dwz_bfd == NULL) |
2325 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2326 | ||
2bf3b79d SDJ |
2327 | if (dwz_bfd == nullptr) |
2328 | { | |
2329 | /* If the user has provided us with different | |
2330 | debug file directories, we can try them in order. */ | |
2331 | dwz_bfd = dwz_search_other_debugdirs (filename, buildid, buildid_len); | |
2332 | } | |
2333 | ||
0d79cdc4 AM |
2334 | if (dwz_bfd == nullptr) |
2335 | { | |
2336 | gdb::unique_xmalloc_ptr<char> alt_filename; | |
c3699833 | 2337 | const char *origname = bfd_get_filename (per_bfd->obfd); |
0d79cdc4 AM |
2338 | |
2339 | scoped_fd fd (debuginfod_debuginfo_query (buildid, | |
2340 | buildid_len, | |
2341 | origname, | |
2342 | &alt_filename)); | |
2343 | ||
2344 | if (fd.get () >= 0) | |
2345 | { | |
2346 | /* File successfully retrieved from server. */ | |
ad80db5b | 2347 | dwz_bfd = gdb_bfd_open (alt_filename.get (), gnutarget); |
0d79cdc4 AM |
2348 | |
2349 | if (dwz_bfd == nullptr) | |
2350 | warning (_("File \"%s\" from debuginfod cannot be opened as bfd"), | |
2351 | alt_filename.get ()); | |
2352 | else if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) | |
2353 | dwz_bfd.reset (nullptr); | |
2354 | } | |
2355 | } | |
2356 | ||
dc294be5 TT |
2357 | if (dwz_bfd == NULL) |
2358 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
c3699833 | 2359 | bfd_get_filename (per_bfd->obfd)); |
dc294be5 | 2360 | |
7ff8cb8c TT |
2361 | std::unique_ptr<struct dwz_file> result |
2362 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2363 | |
5bb6e9dd TT |
2364 | for (asection *sec : gdb_bfd_sections (result->dwz_bfd)) |
2365 | locate_dwz_sections (result->dwz_bfd.get (), sec, result.get ()); | |
36586728 | 2366 | |
c3699833 SM |
2367 | gdb_bfd_record_inclusion (per_bfd->obfd, result->dwz_bfd.get ()); |
2368 | per_bfd->dwz_file = std::move (result); | |
2369 | return per_bfd->dwz_file.get (); | |
36586728 | 2370 | } |
9291a0cd | 2371 | \f |
7b9f3c50 DE |
2372 | /* DWARF quick_symbols_functions support. */ |
2373 | ||
2374 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2375 | unique line tables, so we maintain a separate table of all .debug_line | |
2376 | derived entries to support the sharing. | |
2377 | All the quick functions need is the list of file names. We discard the | |
2378 | line_header when we're done and don't need to record it here. */ | |
2379 | struct quick_file_names | |
2380 | { | |
094b34ac DE |
2381 | /* The data used to construct the hash key. */ |
2382 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2383 | |
2384 | /* The number of entries in file_names, real_names. */ | |
2385 | unsigned int num_file_names; | |
2386 | ||
2387 | /* The file names from the line table, after being run through | |
2388 | file_full_name. */ | |
2389 | const char **file_names; | |
2390 | ||
2391 | /* The file names from the line table after being run through | |
2392 | gdb_realpath. These are computed lazily. */ | |
2393 | const char **real_names; | |
2394 | }; | |
2395 | ||
2396 | /* When using the index (and thus not using psymtabs), each CU has an | |
2397 | object of this type. This is used to hold information needed by | |
2398 | the various "quick" methods. */ | |
2399 | struct dwarf2_per_cu_quick_data | |
2400 | { | |
2401 | /* The file table. This can be NULL if there was no file table | |
2402 | or it's currently not read in. | |
5989a64e | 2403 | NOTE: This points into dwarf2_per_objfile->per_bfd->quick_file_names_table. */ |
7b9f3c50 DE |
2404 | struct quick_file_names *file_names; |
2405 | ||
7b9f3c50 DE |
2406 | /* A temporary mark bit used when iterating over all CUs in |
2407 | expand_symtabs_matching. */ | |
2408 | unsigned int mark : 1; | |
2409 | ||
2410 | /* True if we've tried to read the file table and found there isn't one. | |
2411 | There will be no point in trying to read it again next time. */ | |
2412 | unsigned int no_file_data : 1; | |
2413 | }; | |
2414 | ||
094b34ac DE |
2415 | /* Utility hash function for a stmt_list_hash. */ |
2416 | ||
2417 | static hashval_t | |
2418 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2419 | { | |
2420 | hashval_t v = 0; | |
2421 | ||
2422 | if (stmt_list_hash->dwo_unit != NULL) | |
2423 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2424 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2425 | return v; |
2426 | } | |
2427 | ||
2428 | /* Utility equality function for a stmt_list_hash. */ | |
2429 | ||
2430 | static int | |
2431 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2432 | const struct stmt_list_hash *rhs) | |
2433 | { | |
2434 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2435 | return 0; | |
2436 | if (lhs->dwo_unit != NULL | |
2437 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2438 | return 0; | |
2439 | ||
9c541725 | 2440 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2441 | } |
2442 | ||
7b9f3c50 DE |
2443 | /* Hash function for a quick_file_names. */ |
2444 | ||
2445 | static hashval_t | |
2446 | hash_file_name_entry (const void *e) | |
2447 | { | |
9a3c8263 SM |
2448 | const struct quick_file_names *file_data |
2449 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2450 | |
094b34ac | 2451 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2452 | } |
2453 | ||
2454 | /* Equality function for a quick_file_names. */ | |
2455 | ||
2456 | static int | |
2457 | eq_file_name_entry (const void *a, const void *b) | |
2458 | { | |
9a3c8263 SM |
2459 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2460 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2461 | |
094b34ac | 2462 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2463 | } |
2464 | ||
2465 | /* Delete function for a quick_file_names. */ | |
2466 | ||
2467 | static void | |
2468 | delete_file_name_entry (void *e) | |
2469 | { | |
9a3c8263 | 2470 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2471 | int i; |
2472 | ||
2473 | for (i = 0; i < file_data->num_file_names; ++i) | |
2474 | { | |
2475 | xfree ((void*) file_data->file_names[i]); | |
2476 | if (file_data->real_names) | |
2477 | xfree ((void*) file_data->real_names[i]); | |
2478 | } | |
2479 | ||
45940949 TT |
2480 | /* The space for the struct itself lives on the obstack, so we don't |
2481 | free it here. */ | |
7b9f3c50 DE |
2482 | } |
2483 | ||
2484 | /* Create a quick_file_names hash table. */ | |
2485 | ||
5895093f | 2486 | static htab_up |
7b9f3c50 DE |
2487 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2488 | { | |
5895093f TT |
2489 | return htab_up (htab_create_alloc (nr_initial_entries, |
2490 | hash_file_name_entry, eq_file_name_entry, | |
2491 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2492 | } |
9291a0cd | 2493 | |
ab432490 SM |
2494 | /* Read in CU (dwarf2_cu object) for PER_CU in the context of PER_OBJFILE. This |
2495 | function is unrelated to symtabs, symtab would have to be created afterwards. | |
2496 | You should call age_cached_comp_units after processing the CU. */ | |
918dd910 | 2497 | |
1b555f17 | 2498 | static dwarf2_cu * |
ab432490 SM |
2499 | load_cu (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
2500 | bool skip_partial) | |
918dd910 | 2501 | { |
3019eac3 | 2502 | if (per_cu->is_debug_types) |
ab432490 | 2503 | load_full_type_unit (per_cu, per_objfile); |
918dd910 | 2504 | else |
4a636814 SM |
2505 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
2506 | skip_partial, language_minimal); | |
918dd910 | 2507 | |
7188ed02 SM |
2508 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
2509 | if (cu == nullptr) | |
1b555f17 | 2510 | return nullptr; /* Dummy CU. */ |
2dc860c0 | 2511 | |
7188ed02 | 2512 | dwarf2_find_base_address (cu->dies, cu); |
1b555f17 | 2513 | |
7188ed02 | 2514 | return cu; |
918dd910 JK |
2515 | } |
2516 | ||
1350c3b4 | 2517 | /* Read in the symbols for PER_CU in the context of PER_OBJFILE. */ |
2fdf6df6 | 2518 | |
9291a0cd | 2519 | static void |
97a1449a | 2520 | dw2_do_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2521 | dwarf2_per_objfile *per_objfile, bool skip_partial) |
9291a0cd | 2522 | { |
f4dc4d17 DE |
2523 | /* Skip type_unit_groups, reading the type units they contain |
2524 | is handled elsewhere. */ | |
197400e8 | 2525 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2526 | return; |
2527 | ||
b303c6f6 AB |
2528 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2529 | the queue. After this point we're guaranteed to leave this function | |
2530 | with the dwarf queue empty. */ | |
bf6e5d01 | 2531 | dwarf2_queue_guard q_guard (per_objfile); |
9291a0cd | 2532 | |
976ca316 | 2533 | if (!per_objfile->symtab_set_p (per_cu)) |
95554aad | 2534 | { |
976ca316 SM |
2535 | queue_comp_unit (per_cu, per_objfile, language_minimal); |
2536 | dwarf2_cu *cu = load_cu (per_cu, per_objfile, skip_partial); | |
89e63ee4 DE |
2537 | |
2538 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2539 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2540 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2541 | if (!per_cu->is_debug_types | |
1b555f17 SM |
2542 | && cu != NULL |
2543 | && cu->dwo_unit != NULL | |
976ca316 SM |
2544 | && per_objfile->per_bfd->index_table != NULL |
2545 | && per_objfile->per_bfd->index_table->version <= 7 | |
89e63ee4 | 2546 | /* DWP files aren't supported yet. */ |
976ca316 | 2547 | && get_dwp_file (per_objfile) == NULL) |
1b555f17 | 2548 | queue_and_load_all_dwo_tus (cu); |
95554aad | 2549 | } |
9291a0cd | 2550 | |
976ca316 | 2551 | process_queue (per_objfile); |
9291a0cd TT |
2552 | |
2553 | /* Age the cache, releasing compilation units that have not | |
2554 | been used recently. */ | |
976ca316 | 2555 | per_objfile->age_comp_units (); |
9291a0cd TT |
2556 | } |
2557 | ||
97a1449a SM |
2558 | /* Ensure that the symbols for PER_CU have been read in. DWARF2_PER_OBJFILE is |
2559 | the per-objfile for which this symtab is instantiated. | |
2560 | ||
2561 | Returns the resulting symbol table. */ | |
2fdf6df6 | 2562 | |
43f3e411 | 2563 | static struct compunit_symtab * |
97a1449a | 2564 | dw2_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2565 | dwarf2_per_objfile *per_objfile, |
97a1449a | 2566 | bool skip_partial) |
9291a0cd | 2567 | { |
976ca316 | 2568 | gdb_assert (per_objfile->per_bfd->using_index); |
af758d11 | 2569 | |
976ca316 | 2570 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd | 2571 | { |
976ca316 | 2572 | free_cached_comp_units freer (per_objfile); |
c83dd867 | 2573 | scoped_restore decrementer = increment_reading_symtab (); |
976ca316 SM |
2574 | dw2_do_instantiate_symtab (per_cu, per_objfile, skip_partial); |
2575 | process_cu_includes (per_objfile); | |
9291a0cd | 2576 | } |
f194fefb | 2577 | |
976ca316 | 2578 | return per_objfile->get_symtab (per_cu); |
9291a0cd TT |
2579 | } |
2580 | ||
ff4c9fec | 2581 | /* See declaration. */ |
f4dc4d17 | 2582 | |
ff4c9fec | 2583 | dwarf2_per_cu_data * |
5989a64e | 2584 | dwarf2_per_bfd::get_cutu (int index) |
ff4c9fec | 2585 | { |
b76e467d | 2586 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2587 | { |
b76e467d | 2588 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2589 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2590 | return &this->all_type_units[index]->per_cu; |
2591 | } | |
f4dc4d17 | 2592 | |
ff4c9fec SM |
2593 | return this->all_comp_units[index]; |
2594 | } | |
f4dc4d17 | 2595 | |
ff4c9fec | 2596 | /* See declaration. */ |
2fdf6df6 | 2597 | |
ff4c9fec | 2598 | dwarf2_per_cu_data * |
5989a64e | 2599 | dwarf2_per_bfd::get_cu (int index) |
1fd400ff | 2600 | { |
b76e467d | 2601 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2602 | |
ff4c9fec | 2603 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2604 | } |
2605 | ||
ff4c9fec | 2606 | /* See declaration. */ |
f4dc4d17 | 2607 | |
ff4c9fec | 2608 | signatured_type * |
5989a64e | 2609 | dwarf2_per_bfd::get_tu (int index) |
f4dc4d17 | 2610 | { |
b2bdb8cf | 2611 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2612 | |
ff4c9fec | 2613 | return this->all_type_units[index]; |
1fd400ff TT |
2614 | } |
2615 | ||
d3473f0c TT |
2616 | /* See read.h. */ |
2617 | ||
2618 | dwarf2_per_cu_data * | |
5989a64e | 2619 | dwarf2_per_bfd::allocate_per_cu () |
d3473f0c TT |
2620 | { |
2621 | dwarf2_per_cu_data *result = OBSTACK_ZALLOC (&obstack, dwarf2_per_cu_data); | |
1859c670 | 2622 | result->per_bfd = this; |
d3473f0c TT |
2623 | result->index = m_num_psymtabs++; |
2624 | return result; | |
2625 | } | |
2626 | ||
2627 | /* See read.h. */ | |
2628 | ||
2629 | signatured_type * | |
5989a64e | 2630 | dwarf2_per_bfd::allocate_signatured_type () |
d3473f0c TT |
2631 | { |
2632 | signatured_type *result = OBSTACK_ZALLOC (&obstack, signatured_type); | |
1859c670 | 2633 | result->per_cu.per_bfd = this; |
d3473f0c TT |
2634 | result->per_cu.index = m_num_psymtabs++; |
2635 | return result; | |
2636 | } | |
2637 | ||
168c9250 | 2638 | /* Return a new dwarf2_per_cu_data allocated on the per-bfd |
45940949 | 2639 | obstack, and constructed with the specified field values. */ |
4b514bc8 JK |
2640 | |
2641 | static dwarf2_per_cu_data * | |
168c9250 SM |
2642 | create_cu_from_index_list (dwarf2_per_bfd *per_bfd, |
2643 | struct dwarf2_section_info *section, | |
2644 | int is_dwz, | |
2645 | sect_offset sect_off, ULONGEST length) | |
4b514bc8 | 2646 | { |
168c9250 | 2647 | dwarf2_per_cu_data *the_cu = per_bfd->allocate_per_cu (); |
4b514bc8 JK |
2648 | the_cu->sect_off = sect_off; |
2649 | the_cu->length = length; | |
4b514bc8 | 2650 | the_cu->section = section; |
168c9250 | 2651 | the_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 2652 | struct dwarf2_per_cu_quick_data); |
4b514bc8 JK |
2653 | the_cu->is_dwz = is_dwz; |
2654 | return the_cu; | |
2655 | } | |
2656 | ||
2ec9a5e0 TT |
2657 | /* A helper for create_cus_from_index that handles a given list of |
2658 | CUs. */ | |
2fdf6df6 | 2659 | |
74a0d9f6 | 2660 | static void |
168c9250 | 2661 | create_cus_from_index_list (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2662 | const gdb_byte *cu_list, offset_type n_elements, |
2663 | struct dwarf2_section_info *section, | |
b76e467d | 2664 | int is_dwz) |
9291a0cd | 2665 | { |
12359b5e | 2666 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2667 | { |
74a0d9f6 | 2668 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2669 | |
2670 | sect_offset sect_off | |
2671 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2672 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2673 | cu_list += 2 * 8; |
2674 | ||
b76e467d | 2675 | dwarf2_per_cu_data *per_cu |
168c9250 SM |
2676 | = create_cu_from_index_list (per_bfd, section, is_dwz, sect_off, |
2677 | length); | |
2678 | per_bfd->all_comp_units.push_back (per_cu); | |
9291a0cd | 2679 | } |
9291a0cd TT |
2680 | } |
2681 | ||
2ec9a5e0 | 2682 | /* Read the CU list from the mapped index, and use it to create all |
168c9250 | 2683 | the CU objects for PER_BFD. */ |
2ec9a5e0 | 2684 | |
74a0d9f6 | 2685 | static void |
168c9250 | 2686 | create_cus_from_index (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2687 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2688 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2689 | { | |
168c9250 SM |
2690 | gdb_assert (per_bfd->all_comp_units.empty ()); |
2691 | per_bfd->all_comp_units.reserve ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2692 | |
168c9250 SM |
2693 | create_cus_from_index_list (per_bfd, cu_list, cu_list_elements, |
2694 | &per_bfd->info, 0); | |
2ec9a5e0 TT |
2695 | |
2696 | if (dwz_elements == 0) | |
74a0d9f6 | 2697 | return; |
2ec9a5e0 | 2698 | |
168c9250 SM |
2699 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
2700 | create_cus_from_index_list (per_bfd, dwz_list, dwz_elements, | |
b76e467d | 2701 | &dwz->info, 1); |
2ec9a5e0 TT |
2702 | } |
2703 | ||
1fd400ff | 2704 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2705 | |
74a0d9f6 | 2706 | static void |
12359b5e | 2707 | create_signatured_type_table_from_index |
168c9250 SM |
2708 | (dwarf2_per_bfd *per_bfd, struct dwarf2_section_info *section, |
2709 | const gdb_byte *bytes, offset_type elements) | |
1fd400ff | 2710 | { |
168c9250 SM |
2711 | gdb_assert (per_bfd->all_type_units.empty ()); |
2712 | per_bfd->all_type_units.reserve (elements / 3); | |
1fd400ff | 2713 | |
298e9637 | 2714 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2715 | |
12359b5e | 2716 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2717 | { |
52dc124a | 2718 | struct signatured_type *sig_type; |
9c541725 | 2719 | ULONGEST signature; |
1fd400ff | 2720 | void **slot; |
9c541725 | 2721 | cu_offset type_offset_in_tu; |
1fd400ff | 2722 | |
74a0d9f6 | 2723 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2724 | sect_offset sect_off |
2725 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2726 | type_offset_in_tu | |
2727 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2728 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2729 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2730 | bytes += 3 * 8; | |
2731 | ||
168c9250 | 2732 | sig_type = per_bfd->allocate_signatured_type (); |
52dc124a | 2733 | sig_type->signature = signature; |
9c541725 | 2734 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2735 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2736 | sig_type->per_cu.section = section; |
9c541725 | 2737 | sig_type->per_cu.sect_off = sect_off; |
52dc124a | 2738 | sig_type->per_cu.v.quick |
168c9250 | 2739 | = OBSTACK_ZALLOC (&per_bfd->obstack, |
1fd400ff TT |
2740 | struct dwarf2_per_cu_quick_data); |
2741 | ||
b0b6a987 | 2742 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2743 | *slot = sig_type; |
1fd400ff | 2744 | |
168c9250 | 2745 | per_bfd->all_type_units.push_back (sig_type); |
1fd400ff TT |
2746 | } |
2747 | ||
168c9250 | 2748 | per_bfd->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2749 | } |
2750 | ||
927aa2e7 JK |
2751 | /* Create the signatured type hash table from .debug_names. */ |
2752 | ||
2753 | static void | |
2754 | create_signatured_type_table_from_debug_names | |
976ca316 | 2755 | (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2756 | const mapped_debug_names &map, |
2757 | struct dwarf2_section_info *section, | |
2758 | struct dwarf2_section_info *abbrev_section) | |
2759 | { | |
976ca316 | 2760 | struct objfile *objfile = per_objfile->objfile; |
ed2dc618 | 2761 | |
96b79293 TT |
2762 | section->read (objfile); |
2763 | abbrev_section->read (objfile); | |
927aa2e7 | 2764 | |
976ca316 SM |
2765 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
2766 | per_objfile->per_bfd->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2767 | |
298e9637 | 2768 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2769 | |
2770 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2771 | { | |
2772 | struct signatured_type *sig_type; | |
927aa2e7 | 2773 | void **slot; |
927aa2e7 JK |
2774 | |
2775 | sect_offset sect_off | |
2776 | = (sect_offset) (extract_unsigned_integer | |
2777 | (map.tu_table_reordered + i * map.offset_size, | |
2778 | map.offset_size, | |
2779 | map.dwarf5_byte_order)); | |
2780 | ||
2781 | comp_unit_head cu_header; | |
976ca316 | 2782 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 | 2783 | abbrev_section, |
927aa2e7 JK |
2784 | section->buffer + to_underlying (sect_off), |
2785 | rcuh_kind::TYPE); | |
2786 | ||
976ca316 | 2787 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
927aa2e7 JK |
2788 | sig_type->signature = cu_header.signature; |
2789 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2790 | sig_type->per_cu.is_debug_types = 1; | |
2791 | sig_type->per_cu.section = section; | |
2792 | sig_type->per_cu.sect_off = sect_off; | |
927aa2e7 | 2793 | sig_type->per_cu.v.quick |
976ca316 | 2794 | = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
927aa2e7 JK |
2795 | struct dwarf2_per_cu_quick_data); |
2796 | ||
b0b6a987 | 2797 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2798 | *slot = sig_type; |
2799 | ||
976ca316 | 2800 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2801 | } |
2802 | ||
976ca316 | 2803 | per_objfile->per_bfd->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2804 | } |
2805 | ||
9291a0cd TT |
2806 | /* Read the address map data from the mapped index, and use it to |
2807 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2808 | |
9291a0cd | 2809 | static void |
976ca316 | 2810 | create_addrmap_from_index (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 2811 | struct mapped_index *index) |
9291a0cd | 2812 | { |
976ca316 | 2813 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 2814 | struct gdbarch *gdbarch = objfile->arch (); |
9291a0cd | 2815 | const gdb_byte *iter, *end; |
9291a0cd | 2816 | struct addrmap *mutable_map; |
9291a0cd TT |
2817 | CORE_ADDR baseaddr; |
2818 | ||
8268c778 PA |
2819 | auto_obstack temp_obstack; |
2820 | ||
9291a0cd TT |
2821 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2822 | ||
f00a2de2 PA |
2823 | iter = index->address_table.data (); |
2824 | end = iter + index->address_table.size (); | |
9291a0cd | 2825 | |
b3b3bada | 2826 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2827 | |
2828 | while (iter < end) | |
2829 | { | |
2830 | ULONGEST hi, lo, cu_index; | |
2831 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2832 | iter += 8; | |
2833 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2834 | iter += 8; | |
2835 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2836 | iter += 4; | |
f652bce2 | 2837 | |
24a55014 | 2838 | if (lo > hi) |
f652bce2 | 2839 | { |
b98664d3 | 2840 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2841 | hex_string (lo), hex_string (hi)); |
24a55014 | 2842 | continue; |
f652bce2 | 2843 | } |
24a55014 | 2844 | |
976ca316 | 2845 | if (cu_index >= per_objfile->per_bfd->all_comp_units.size ()) |
f652bce2 | 2846 | { |
b98664d3 | 2847 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2848 | (unsigned) cu_index); |
24a55014 | 2849 | continue; |
f652bce2 | 2850 | } |
24a55014 | 2851 | |
79748972 TT |
2852 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2853 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2854 | addrmap_set_empty (mutable_map, lo, hi - 1, |
976ca316 | 2855 | per_objfile->per_bfd->get_cu (cu_index)); |
9291a0cd TT |
2856 | } |
2857 | ||
d320c2b5 | 2858 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2859 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2860 | } |
2861 | ||
927aa2e7 JK |
2862 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2863 | populate the objfile's psymtabs_addrmap. */ | |
2864 | ||
2865 | static void | |
976ca316 | 2866 | create_addrmap_from_aranges (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2867 | struct dwarf2_section_info *section) |
2868 | { | |
976ca316 | 2869 | struct objfile *objfile = per_objfile->objfile; |
927aa2e7 | 2870 | bfd *abfd = objfile->obfd; |
08feed99 | 2871 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 2872 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2873 | |
2874 | auto_obstack temp_obstack; | |
2875 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2876 | ||
2877 | std::unordered_map<sect_offset, | |
2878 | dwarf2_per_cu_data *, | |
2879 | gdb::hash_enum<sect_offset>> | |
2880 | debug_info_offset_to_per_cu; | |
976ca316 | 2881 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 2882 | { |
927aa2e7 JK |
2883 | const auto insertpair |
2884 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2885 | if (!insertpair.second) | |
2886 | { | |
2887 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2888 | "debug_info_offset %s, ignoring .debug_aranges."), |
2889 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2890 | return; |
2891 | } | |
2892 | } | |
2893 | ||
96b79293 | 2894 | section->read (objfile); |
927aa2e7 JK |
2895 | |
2896 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2897 | ||
2898 | const gdb_byte *addr = section->buffer; | |
2899 | ||
2900 | while (addr < section->buffer + section->size) | |
2901 | { | |
2902 | const gdb_byte *const entry_addr = addr; | |
2903 | unsigned int bytes_read; | |
2904 | ||
2905 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2906 | &bytes_read); | |
2907 | addr += bytes_read; | |
2908 | ||
2909 | const gdb_byte *const entry_end = addr + entry_length; | |
2910 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2911 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2912 | if (addr + entry_length > section->buffer + section->size) | |
2913 | { | |
47e3f474 | 2914 | warning (_("Section .debug_aranges in %s entry at offset %s " |
dda83cd7 | 2915 | "length %s exceeds section length %s, " |
927aa2e7 | 2916 | "ignoring .debug_aranges."), |
47e3f474 TV |
2917 | objfile_name (objfile), |
2918 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2919 | plongest (bytes_read + entry_length), |
2920 | pulongest (section->size)); | |
2921 | return; | |
2922 | } | |
2923 | ||
2924 | /* The version number. */ | |
2925 | const uint16_t version = read_2_bytes (abfd, addr); | |
2926 | addr += 2; | |
2927 | if (version != 2) | |
2928 | { | |
47e3f474 | 2929 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2930 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2931 | objfile_name (objfile), |
2932 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2933 | return; |
2934 | } | |
2935 | ||
2936 | const uint64_t debug_info_offset | |
2937 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2938 | addr += offset_size; | |
2939 | const auto per_cu_it | |
2940 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2941 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2942 | { | |
47e3f474 | 2943 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2944 | "debug_info_offset %s does not exists, " |
2945 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2946 | objfile_name (objfile), |
2947 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2948 | pulongest (debug_info_offset)); |
2949 | return; | |
2950 | } | |
2951 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2952 | ||
2953 | const uint8_t address_size = *addr++; | |
2954 | if (address_size < 1 || address_size > 8) | |
2955 | { | |
47e3f474 | 2956 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2957 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2958 | objfile_name (objfile), |
2959 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2960 | return; |
2961 | } | |
2962 | ||
2963 | const uint8_t segment_selector_size = *addr++; | |
2964 | if (segment_selector_size != 0) | |
2965 | { | |
47e3f474 | 2966 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2967 | "segment_selector_size %u is not supported, " |
2968 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2969 | objfile_name (objfile), |
2970 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2971 | segment_selector_size); |
2972 | return; | |
2973 | } | |
2974 | ||
2975 | /* Must pad to an alignment boundary that is twice the address | |
dda83cd7 SM |
2976 | size. It is undocumented by the DWARF standard but GCC does |
2977 | use it. */ | |
927aa2e7 JK |
2978 | for (size_t padding = ((-(addr - section->buffer)) |
2979 | & (2 * address_size - 1)); | |
dda83cd7 | 2980 | padding > 0; padding--) |
927aa2e7 JK |
2981 | if (*addr++ != 0) |
2982 | { | |
47e3f474 | 2983 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2984 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2985 | objfile_name (objfile), |
2986 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2987 | return; |
2988 | } | |
2989 | ||
2990 | for (;;) | |
2991 | { | |
2992 | if (addr + 2 * address_size > entry_end) | |
2993 | { | |
47e3f474 | 2994 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2995 | "address list is not properly terminated, " |
2996 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2997 | objfile_name (objfile), |
2998 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2999 | return; |
3000 | } | |
3001 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
3002 | dwarf5_byte_order); | |
3003 | addr += address_size; | |
3004 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
3005 | dwarf5_byte_order); | |
3006 | addr += address_size; | |
3007 | if (start == 0 && length == 0) | |
3008 | break; | |
976ca316 | 3009 | if (start == 0 && !per_objfile->per_bfd->has_section_at_zero) |
927aa2e7 JK |
3010 | { |
3011 | /* Symbol was eliminated due to a COMDAT group. */ | |
3012 | continue; | |
3013 | } | |
3014 | ULONGEST end = start + length; | |
79748972 TT |
3015 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
3016 | - baseaddr); | |
3017 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
3018 | - baseaddr); | |
927aa2e7 JK |
3019 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
3020 | } | |
3021 | } | |
3022 | ||
d320c2b5 | 3023 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 3024 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
3025 | } |
3026 | ||
9291a0cd TT |
3027 | /* Find a slot in the mapped index INDEX for the object named NAME. |
3028 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
3029 | constant pool and return true. If NAME cannot be found, return |
3030 | false. */ | |
2fdf6df6 | 3031 | |
109483d9 | 3032 | static bool |
9291a0cd TT |
3033 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
3034 | offset_type **vec_out) | |
3035 | { | |
0cf03b49 | 3036 | offset_type hash; |
9291a0cd | 3037 | offset_type slot, step; |
559a7a62 | 3038 | int (*cmp) (const char *, const char *); |
9291a0cd | 3039 | |
791afaa2 | 3040 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 3041 | if (current_language->la_language == language_cplus |
45280282 IB |
3042 | || current_language->la_language == language_fortran |
3043 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3044 | { |
3045 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3046 | not contain any. */ | |
a8719064 | 3047 | |
72998fb3 | 3048 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3049 | { |
109483d9 | 3050 | without_params = cp_remove_params (name); |
0cf03b49 | 3051 | |
72998fb3 | 3052 | if (without_params != NULL) |
791afaa2 | 3053 | name = without_params.get (); |
0cf03b49 JK |
3054 | } |
3055 | } | |
3056 | ||
559a7a62 | 3057 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3058 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3059 | simulate our NAME being searched is also lowercased. */ |
3060 | hash = mapped_index_string_hash ((index->version == 4 | |
dda83cd7 | 3061 | && case_sensitivity == case_sensitive_off |
559a7a62 JK |
3062 | ? 5 : index->version), |
3063 | name); | |
3064 | ||
f00a2de2 PA |
3065 | slot = hash & (index->symbol_table.size () - 1); |
3066 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 3067 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3068 | |
3069 | for (;;) | |
3070 | { | |
9291a0cd | 3071 | const char *str; |
f00a2de2 PA |
3072 | |
3073 | const auto &bucket = index->symbol_table[slot]; | |
3074 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 3075 | return false; |
9291a0cd | 3076 | |
f00a2de2 | 3077 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 3078 | if (!cmp (name, str)) |
9291a0cd TT |
3079 | { |
3080 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 3081 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 3082 | return true; |
9291a0cd TT |
3083 | } |
3084 | ||
f00a2de2 | 3085 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
3086 | } |
3087 | } | |
3088 | ||
4485a1c1 SM |
3089 | /* A helper function that reads the .gdb_index from BUFFER and fills |
3090 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 3091 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
3092 | ok to use deprecated sections. |
3093 | ||
3094 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3095 | out parameters that are filled in with information about the CU and | |
3096 | TU lists in the section. | |
3097 | ||
4485a1c1 | 3098 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 3099 | |
d33bc52e | 3100 | static bool |
3810f182 | 3101 | read_gdb_index_from_buffer (const char *filename, |
4485a1c1 SM |
3102 | bool deprecated_ok, |
3103 | gdb::array_view<const gdb_byte> buffer, | |
3104 | struct mapped_index *map, | |
3105 | const gdb_byte **cu_list, | |
3106 | offset_type *cu_list_elements, | |
3107 | const gdb_byte **types_list, | |
3108 | offset_type *types_list_elements) | |
3109 | { | |
3110 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 3111 | |
9291a0cd | 3112 | /* Version check. */ |
4485a1c1 | 3113 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3114 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3115 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3116 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3117 | indices. */ |
831adc1f | 3118 | if (version < 4) |
481860b3 GB |
3119 | { |
3120 | static int warning_printed = 0; | |
3121 | if (!warning_printed) | |
3122 | { | |
3123 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3124 | filename); |
481860b3 GB |
3125 | warning_printed = 1; |
3126 | } | |
3127 | return 0; | |
3128 | } | |
3129 | /* Index version 4 uses a different hash function than index version | |
3130 | 5 and later. | |
3131 | ||
3132 | Versions earlier than 6 did not emit psymbols for inlined | |
3133 | functions. Using these files will cause GDB not to be able to | |
3134 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3135 | indices unless the user has done |
3136 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3137 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3138 | { |
3139 | static int warning_printed = 0; | |
3140 | if (!warning_printed) | |
3141 | { | |
e615022a DE |
3142 | warning (_("\ |
3143 | Skipping deprecated .gdb_index section in %s.\n\ | |
3144 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3145 | to use the section anyway."), | |
2ec9a5e0 | 3146 | filename); |
481860b3 GB |
3147 | warning_printed = 1; |
3148 | } | |
3149 | return 0; | |
3150 | } | |
796a7ff8 | 3151 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3152 | of the TU (for symbols coming from TUs), |
3153 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3154 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3155 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3156 | These are just performance bugs, and we can't distinguish gdb-generated | |
3157 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3158 | |
481860b3 | 3159 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3160 | longer backward compatible. */ |
796a7ff8 | 3161 | if (version > 8) |
594e8718 | 3162 | return 0; |
9291a0cd | 3163 | |
559a7a62 | 3164 | map->version = version; |
9291a0cd | 3165 | |
4485a1c1 | 3166 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3167 | |
4485a1c1 | 3168 | int i = 0; |
2ec9a5e0 TT |
3169 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3170 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3171 | / 8); | |
1fd400ff TT |
3172 | ++i; |
3173 | ||
2ec9a5e0 TT |
3174 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3175 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3176 | - MAYBE_SWAP (metadata[i])) | |
3177 | / 8); | |
987d643c | 3178 | ++i; |
1fd400ff | 3179 | |
f00a2de2 PA |
3180 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3181 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3182 | map->address_table | |
3183 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3184 | ++i; |
3185 | ||
f00a2de2 PA |
3186 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3187 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3188 | map->symbol_table | |
3189 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3190 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3191 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3192 | |
f00a2de2 | 3193 | ++i; |
f9d83a0b | 3194 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3195 | |
2ec9a5e0 TT |
3196 | return 1; |
3197 | } | |
3198 | ||
4485a1c1 SM |
3199 | /* Callback types for dwarf2_read_gdb_index. */ |
3200 | ||
3201 | typedef gdb::function_view | |
5989a64e | 3202 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_bfd *)> |
4485a1c1 SM |
3203 | get_gdb_index_contents_ftype; |
3204 | typedef gdb::function_view | |
3205 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3206 | get_gdb_index_contents_dwz_ftype; | |
3207 | ||
927aa2e7 | 3208 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3209 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3210 | ||
3211 | static int | |
4485a1c1 | 3212 | dwarf2_read_gdb_index |
976ca316 | 3213 | (dwarf2_per_objfile *per_objfile, |
4485a1c1 SM |
3214 | get_gdb_index_contents_ftype get_gdb_index_contents, |
3215 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3216 | { |
2ec9a5e0 TT |
3217 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3218 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3219 | struct dwz_file *dwz; |
976ca316 | 3220 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 3221 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
2ec9a5e0 | 3222 | |
4485a1c1 | 3223 | gdb::array_view<const gdb_byte> main_index_contents |
f8c41851 | 3224 | = get_gdb_index_contents (objfile, per_bfd); |
4485a1c1 SM |
3225 | |
3226 | if (main_index_contents.empty ()) | |
3227 | return 0; | |
3228 | ||
3063847f | 3229 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
3810f182 | 3230 | if (!read_gdb_index_from_buffer (objfile_name (objfile), |
4485a1c1 SM |
3231 | use_deprecated_index_sections, |
3232 | main_index_contents, map.get (), &cu_list, | |
3233 | &cu_list_elements, &types_list, | |
3234 | &types_list_elements)) | |
2ec9a5e0 TT |
3235 | return 0; |
3236 | ||
0fefef59 | 3237 | /* Don't use the index if it's empty. */ |
3063847f | 3238 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3239 | return 0; |
3240 | ||
2ec9a5e0 TT |
3241 | /* If there is a .dwz file, read it so we can get its CU list as |
3242 | well. */ | |
f8c41851 | 3243 | dwz = dwarf2_get_dwz_file (per_bfd); |
4db1a1dc | 3244 | if (dwz != NULL) |
2ec9a5e0 | 3245 | { |
2ec9a5e0 TT |
3246 | struct mapped_index dwz_map; |
3247 | const gdb_byte *dwz_types_ignore; | |
3248 | offset_type dwz_types_elements_ignore; | |
3249 | ||
4485a1c1 SM |
3250 | gdb::array_view<const gdb_byte> dwz_index_content |
3251 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3252 | ||
3253 | if (dwz_index_content.empty ()) | |
3254 | return 0; | |
3255 | ||
3810f182 | 3256 | if (!read_gdb_index_from_buffer (bfd_get_filename (dwz->dwz_bfd.get ()), |
00f93c44 | 3257 | 1, dwz_index_content, &dwz_map, |
4485a1c1 SM |
3258 | &dwz_list, &dwz_list_elements, |
3259 | &dwz_types_ignore, | |
3260 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3261 | { |
3262 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3263 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3264 | return 0; |
3265 | } | |
3266 | } | |
3267 | ||
f8c41851 SM |
3268 | create_cus_from_index (per_bfd, cu_list, cu_list_elements, dwz_list, |
3269 | dwz_list_elements); | |
1fd400ff | 3270 | |
8b70b953 TT |
3271 | if (types_list_elements) |
3272 | { | |
8b70b953 TT |
3273 | /* We can only handle a single .debug_types when we have an |
3274 | index. */ | |
f8c41851 | 3275 | if (per_bfd->types.size () != 1) |
8b70b953 TT |
3276 | return 0; |
3277 | ||
f8c41851 | 3278 | dwarf2_section_info *section = &per_bfd->types[0]; |
8b70b953 | 3279 | |
f8c41851 | 3280 | create_signatured_type_table_from_index (per_bfd, section, types_list, |
168c9250 | 3281 | types_list_elements); |
8b70b953 | 3282 | } |
9291a0cd | 3283 | |
976ca316 | 3284 | create_addrmap_from_index (per_objfile, map.get ()); |
9291a0cd | 3285 | |
f8c41851 SM |
3286 | per_bfd->index_table = std::move (map); |
3287 | per_bfd->using_index = 1; | |
3288 | per_bfd->quick_file_names_table = | |
3289 | create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
3290 | ||
3291 | /* Save partial symtabs in the per_bfd object, for the benefit of subsequent | |
3292 | objfiles using the same BFD. */ | |
3293 | gdb_assert (per_bfd->partial_symtabs == nullptr); | |
3294 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
9291a0cd TT |
3295 | |
3296 | return 1; | |
3297 | } | |
3298 | ||
dee91e82 | 3299 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3300 | |
dee91e82 DE |
3301 | static void |
3302 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3303 | const gdb_byte *info_ptr, |
3e225074 | 3304 | struct die_info *comp_unit_die) |
9291a0cd | 3305 | { |
dee91e82 | 3306 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3307 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
976ca316 | 3308 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
094b34ac | 3309 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3310 | struct attribute *attr; |
7b9f3c50 DE |
3311 | void **slot; |
3312 | struct quick_file_names *qfn; | |
9291a0cd | 3313 | |
0186c6a7 DE |
3314 | gdb_assert (! this_cu->is_debug_types); |
3315 | ||
07261596 TT |
3316 | /* Our callers never want to match partial units -- instead they |
3317 | will match the enclosing full CU. */ | |
3318 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3319 | { | |
3320 | this_cu->v.quick->no_file_data = 1; | |
3321 | return; | |
3322 | } | |
3323 | ||
0186c6a7 | 3324 | lh_cu = this_cu; |
7b9f3c50 | 3325 | slot = NULL; |
dee91e82 | 3326 | |
fff8551c | 3327 | line_header_up lh; |
9c541725 | 3328 | sect_offset line_offset {}; |
fff8551c | 3329 | |
dee91e82 | 3330 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
d4df075e | 3331 | if (attr != nullptr && attr->form_is_unsigned ()) |
9291a0cd | 3332 | { |
7b9f3c50 DE |
3333 | struct quick_file_names find_entry; |
3334 | ||
d4df075e | 3335 | line_offset = (sect_offset) attr->as_unsigned (); |
7b9f3c50 DE |
3336 | |
3337 | /* We may have already read in this line header (TU line header sharing). | |
3338 | If we have we're done. */ | |
094b34ac | 3339 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3340 | find_entry.hash.line_sect_off = line_offset; |
976ca316 | 3341 | slot = htab_find_slot (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 DE |
3342 | &find_entry, INSERT); |
3343 | if (*slot != NULL) | |
3344 | { | |
9a3c8263 | 3345 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3346 | return; |
7b9f3c50 DE |
3347 | } |
3348 | ||
3019eac3 | 3349 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3350 | } |
3351 | if (lh == NULL) | |
3352 | { | |
094b34ac | 3353 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3354 | return; |
9291a0cd TT |
3355 | } |
3356 | ||
976ca316 | 3357 | qfn = XOBNEW (&per_objfile->per_bfd->obstack, struct quick_file_names); |
094b34ac | 3358 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3359 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3360 | gdb_assert (slot != NULL); |
3361 | *slot = qfn; | |
9291a0cd | 3362 | |
d721ba37 | 3363 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3364 | |
aa391654 TT |
3365 | int offset = 0; |
3366 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3367 | ++offset; | |
3368 | ||
7ba99d21 | 3369 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3370 | qfn->file_names = |
976ca316 | 3371 | XOBNEWVEC (&per_objfile->per_bfd->obstack, const char *, |
45940949 | 3372 | qfn->num_file_names); |
aa391654 TT |
3373 | if (offset != 0) |
3374 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3375 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3376 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3377 | fnd.comp_dir).release (); | |
7b9f3c50 | 3378 | qfn->real_names = NULL; |
9291a0cd | 3379 | |
094b34ac | 3380 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3381 | } |
3382 | ||
3383 | /* A helper for the "quick" functions which attempts to read the line | |
3384 | table for THIS_CU. */ | |
3385 | ||
3386 | static struct quick_file_names * | |
ab432490 SM |
3387 | dw2_get_file_names (dwarf2_per_cu_data *this_cu, |
3388 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 3389 | { |
0186c6a7 DE |
3390 | /* This should never be called for TUs. */ |
3391 | gdb_assert (! this_cu->is_debug_types); | |
3392 | /* Nor type unit groups. */ | |
197400e8 | 3393 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3394 | |
dee91e82 DE |
3395 | if (this_cu->v.quick->file_names != NULL) |
3396 | return this_cu->v.quick->file_names; | |
3397 | /* If we know there is no line data, no point in looking again. */ | |
3398 | if (this_cu->v.quick->no_file_data) | |
3399 | return NULL; | |
3400 | ||
ab432490 | 3401 | cutu_reader reader (this_cu, per_objfile); |
c0ab21c2 | 3402 | if (!reader.dummy_p) |
3e225074 | 3403 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die); |
dee91e82 DE |
3404 | |
3405 | if (this_cu->v.quick->no_file_data) | |
3406 | return NULL; | |
3407 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3408 | } |
3409 | ||
3410 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3411 | real path for a given file name from the line table. */ |
2fdf6df6 | 3412 | |
9291a0cd | 3413 | static const char * |
976ca316 | 3414 | dw2_get_real_path (dwarf2_per_objfile *per_objfile, |
7b9f3c50 | 3415 | struct quick_file_names *qfn, int index) |
9291a0cd | 3416 | { |
7b9f3c50 | 3417 | if (qfn->real_names == NULL) |
976ca316 | 3418 | qfn->real_names = OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
26f2dc30 | 3419 | qfn->num_file_names, const char *); |
9291a0cd | 3420 | |
7b9f3c50 | 3421 | if (qfn->real_names[index] == NULL) |
14278e1f | 3422 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3423 | |
7b9f3c50 | 3424 | return qfn->real_names[index]; |
9291a0cd TT |
3425 | } |
3426 | ||
3427 | static struct symtab * | |
3428 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3429 | { | |
976ca316 SM |
3430 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3431 | dwarf2_per_cu_data *dwarf_cu = per_objfile->per_bfd->all_comp_units.back (); | |
3432 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, per_objfile, false); | |
ae2de4f8 | 3433 | |
43f3e411 DE |
3434 | if (cust == NULL) |
3435 | return NULL; | |
ed2dc618 | 3436 | |
43f3e411 | 3437 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3438 | } |
3439 | ||
7b9f3c50 DE |
3440 | /* Traversal function for dw2_forget_cached_source_info. */ |
3441 | ||
3442 | static int | |
3443 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3444 | { |
7b9f3c50 | 3445 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3446 | |
7b9f3c50 | 3447 | if (file_data->real_names) |
9291a0cd | 3448 | { |
7b9f3c50 | 3449 | int i; |
9291a0cd | 3450 | |
7b9f3c50 | 3451 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3452 | { |
7b9f3c50 DE |
3453 | xfree ((void*) file_data->real_names[i]); |
3454 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3455 | } |
3456 | } | |
7b9f3c50 DE |
3457 | |
3458 | return 1; | |
3459 | } | |
3460 | ||
3461 | static void | |
3462 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3463 | { | |
976ca316 | 3464 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
7b9f3c50 | 3465 | |
976ca316 | 3466 | htab_traverse_noresize (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 | 3467 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3468 | } |
3469 | ||
f8eba3c6 TT |
3470 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3471 | the symtabs and calls the iterator. */ | |
3472 | ||
3473 | static int | |
3474 | dw2_map_expand_apply (struct objfile *objfile, | |
3475 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3476 | const char *name, const char *real_path, |
14bc53a8 | 3477 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3478 | { |
43f3e411 | 3479 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3480 | |
3481 | /* Don't visit already-expanded CUs. */ | |
af758d11 SM |
3482 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3483 | if (per_objfile->symtab_set_p (per_cu)) | |
f8eba3c6 TT |
3484 | return 0; |
3485 | ||
3486 | /* This may expand more than one symtab, and we want to iterate over | |
3487 | all of them. */ | |
97a1449a | 3488 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
f8eba3c6 | 3489 | |
14bc53a8 PA |
3490 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3491 | last_made, callback); | |
f8eba3c6 TT |
3492 | } |
3493 | ||
3494 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3495 | ||
14bc53a8 PA |
3496 | static bool |
3497 | dw2_map_symtabs_matching_filename | |
3498 | (struct objfile *objfile, const char *name, const char *real_path, | |
3499 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3500 | { |
c011a4f4 | 3501 | const char *name_basename = lbasename (name); |
976ca316 | 3502 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 3503 | |
848e3e78 DE |
3504 | /* The rule is CUs specify all the files, including those used by |
3505 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3506 | |
976ca316 | 3507 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3508 | { |
3d7bb9d9 | 3509 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3510 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3511 | continue; |
3512 | ||
976ca316 | 3513 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3514 | if (file_data == NULL) |
9291a0cd TT |
3515 | continue; |
3516 | ||
b76e467d | 3517 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3518 | { |
7b9f3c50 | 3519 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3520 | const char *this_real_name; |
9291a0cd | 3521 | |
af529f8f | 3522 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3523 | { |
f5b95b50 | 3524 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3525 | callback)) |
3526 | return true; | |
288e77a7 | 3527 | continue; |
4aac40c8 | 3528 | } |
9291a0cd | 3529 | |
c011a4f4 DE |
3530 | /* Before we invoke realpath, which can get expensive when many |
3531 | files are involved, do a quick comparison of the basenames. */ | |
3532 | if (! basenames_may_differ | |
3533 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3534 | continue; | |
3535 | ||
976ca316 | 3536 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
da235a7c | 3537 | if (compare_filenames_for_search (this_real_name, name)) |
9291a0cd | 3538 | { |
da235a7c | 3539 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3540 | callback)) |
3541 | return true; | |
288e77a7 | 3542 | continue; |
da235a7c | 3543 | } |
9291a0cd | 3544 | |
da235a7c JK |
3545 | if (real_path != NULL) |
3546 | { | |
af529f8f JK |
3547 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3548 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3549 | if (this_real_name != NULL |
af529f8f | 3550 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3551 | { |
f5b95b50 | 3552 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3553 | callback)) |
3554 | return true; | |
288e77a7 | 3555 | continue; |
9291a0cd TT |
3556 | } |
3557 | } | |
3558 | } | |
3559 | } | |
3560 | ||
14bc53a8 | 3561 | return false; |
9291a0cd TT |
3562 | } |
3563 | ||
da51c347 DE |
3564 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3565 | ||
3566 | struct dw2_symtab_iterator | |
9291a0cd | 3567 | { |
ed2dc618 | 3568 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
976ca316 | 3569 | dwarf2_per_objfile *per_objfile; |
2b79f376 SM |
3570 | /* If set, only look for symbols that match that block. Valid values are |
3571 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3572 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3573 | /* The kind of symbol we're looking for. */ |
3574 | domain_enum domain; | |
3575 | /* The list of CUs from the index entry of the symbol, | |
3576 | or NULL if not found. */ | |
3577 | offset_type *vec; | |
3578 | /* The next element in VEC to look at. */ | |
3579 | int next; | |
3580 | /* The number of elements in VEC, or zero if there is no match. */ | |
3581 | int length; | |
8943b874 DE |
3582 | /* Have we seen a global version of the symbol? |
3583 | If so we can ignore all further global instances. | |
3584 | This is to work around gold/15646, inefficient gold-generated | |
3585 | indices. */ | |
3586 | int global_seen; | |
da51c347 | 3587 | }; |
9291a0cd | 3588 | |
e5f3ece2 | 3589 | /* Initialize the index symtab iterator ITER, common part. */ |
2fdf6df6 | 3590 | |
9291a0cd | 3591 | static void |
e5f3ece2 TV |
3592 | dw2_symtab_iter_init_common (struct dw2_symtab_iterator *iter, |
3593 | dwarf2_per_objfile *per_objfile, | |
3594 | gdb::optional<block_enum> block_index, | |
3595 | domain_enum domain) | |
da51c347 | 3596 | { |
976ca316 | 3597 | iter->per_objfile = per_objfile; |
da51c347 DE |
3598 | iter->block_index = block_index; |
3599 | iter->domain = domain; | |
3600 | iter->next = 0; | |
8943b874 | 3601 | iter->global_seen = 0; |
e5f3ece2 TV |
3602 | iter->vec = NULL; |
3603 | iter->length = 0; | |
3604 | } | |
da51c347 | 3605 | |
e5f3ece2 TV |
3606 | /* Initialize the index symtab iterator ITER, const char *NAME variant. */ |
3607 | ||
3608 | static void | |
3609 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3610 | dwarf2_per_objfile *per_objfile, | |
3611 | gdb::optional<block_enum> block_index, | |
3612 | domain_enum domain, | |
3613 | const char *name) | |
3614 | { | |
3615 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
ed2dc618 | 3616 | |
e5f3ece2 | 3617 | mapped_index *index = per_objfile->per_bfd->index_table.get (); |
ed2dc618 | 3618 | /* index is NULL if OBJF_READNOW. */ |
e5f3ece2 TV |
3619 | if (index == NULL) |
3620 | return; | |
3621 | ||
3622 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 | 3623 | iter->length = MAYBE_SWAP (*iter->vec); |
e5f3ece2 TV |
3624 | } |
3625 | ||
3626 | /* Initialize the index symtab iterator ITER, offset_type NAMEI variant. */ | |
3627 | ||
3628 | static void | |
3629 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3630 | dwarf2_per_objfile *per_objfile, | |
3631 | gdb::optional<block_enum> block_index, | |
3632 | domain_enum domain, offset_type namei) | |
3633 | { | |
3634 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
3635 | ||
3636 | mapped_index *index = per_objfile->per_bfd->index_table.get (); | |
3637 | /* index is NULL if OBJF_READNOW. */ | |
3638 | if (index == NULL) | |
3639 | return; | |
3640 | ||
3641 | gdb_assert (!index->symbol_name_slot_invalid (namei)); | |
3642 | const auto &bucket = index->symbol_table[namei]; | |
3643 | ||
3644 | iter->vec = (offset_type *) (index->constant_pool | |
3645 | + MAYBE_SWAP (bucket.vec)); | |
3646 | iter->length = MAYBE_SWAP (*iter->vec); | |
da51c347 DE |
3647 | } |
3648 | ||
3649 | /* Return the next matching CU or NULL if there are no more. */ | |
3650 | ||
3651 | static struct dwarf2_per_cu_data * | |
3652 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3653 | { | |
976ca316 | 3654 | dwarf2_per_objfile *per_objfile = iter->per_objfile; |
ed2dc618 | 3655 | |
da51c347 DE |
3656 | for ( ; iter->next < iter->length; ++iter->next) |
3657 | { | |
3658 | offset_type cu_index_and_attrs = | |
3659 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3660 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3661 | gdb_index_symbol_kind symbol_kind = |
3662 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3663 | /* Only check the symbol attributes if they're present. | |
3664 | Indices prior to version 7 don't record them, | |
3665 | and indices >= 7 may elide them for certain symbols | |
3666 | (gold does this). */ | |
3667 | int attrs_valid = | |
976ca316 | 3668 | (per_objfile->per_bfd->index_table->version >= 7 |
da51c347 DE |
3669 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3670 | ||
3190f0c6 | 3671 | /* Don't crash on bad data. */ |
976ca316 SM |
3672 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
3673 | + per_objfile->per_bfd->all_type_units.size ())) | |
3190f0c6 | 3674 | { |
b98664d3 | 3675 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 3676 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
3190f0c6 DE |
3677 | continue; |
3678 | } | |
3679 | ||
976ca316 | 3680 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
3190f0c6 | 3681 | |
da51c347 | 3682 | /* Skip if already read in. */ |
976ca316 | 3683 | if (per_objfile->symtab_set_p (per_cu)) |
da51c347 DE |
3684 | continue; |
3685 | ||
8943b874 DE |
3686 | /* Check static vs global. */ |
3687 | if (attrs_valid) | |
3688 | { | |
2b79f376 SM |
3689 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3690 | ||
3691 | if (iter->block_index.has_value ()) | |
3692 | { | |
3693 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3694 | ||
3695 | if (is_static != want_static) | |
3696 | continue; | |
3697 | } | |
3698 | ||
8943b874 | 3699 | /* Work around gold/15646. */ |
f030440d TV |
3700 | if (!is_static |
3701 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
3702 | { | |
3703 | if (iter->global_seen) | |
3704 | continue; | |
3705 | ||
3706 | iter->global_seen = 1; | |
3707 | } | |
8943b874 | 3708 | } |
da51c347 DE |
3709 | |
3710 | /* Only check the symbol's kind if it has one. */ | |
3711 | if (attrs_valid) | |
3712 | { | |
3713 | switch (iter->domain) | |
3714 | { | |
3715 | case VAR_DOMAIN: | |
3716 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3717 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3718 | /* Some types are also in VAR_DOMAIN. */ | |
3719 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3720 | continue; | |
3721 | break; | |
3722 | case STRUCT_DOMAIN: | |
3723 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3724 | continue; | |
3725 | break; | |
3726 | case LABEL_DOMAIN: | |
3727 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3728 | continue; | |
3729 | break; | |
59c35742 AB |
3730 | case MODULE_DOMAIN: |
3731 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3732 | continue; | |
3733 | break; | |
da51c347 DE |
3734 | default: |
3735 | break; | |
3736 | } | |
3737 | } | |
3738 | ||
3739 | ++iter->next; | |
3740 | return per_cu; | |
3741 | } | |
3742 | ||
3743 | return NULL; | |
3744 | } | |
3745 | ||
43f3e411 | 3746 | static struct compunit_symtab * |
c7f839cb | 3747 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3748 | const char *name, domain_enum domain) |
9291a0cd | 3749 | { |
43f3e411 | 3750 | struct compunit_symtab *stab_best = NULL; |
976ca316 | 3751 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 3752 | |
b5ec771e PA |
3753 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3754 | ||
ed2dc618 SM |
3755 | struct dw2_symtab_iterator iter; |
3756 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3757 | |
976ca316 | 3758 | dw2_symtab_iter_init (&iter, per_objfile, block_index, domain, name); |
9291a0cd | 3759 | |
ed2dc618 SM |
3760 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3761 | { | |
3762 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 3763 | struct compunit_symtab *stab |
976ca316 | 3764 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
ed2dc618 | 3765 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3766 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3767 | |
ed2dc618 SM |
3768 | sym = block_find_symbol (block, name, domain, |
3769 | block_find_non_opaque_type_preferred, | |
3770 | &with_opaque); | |
b2e2f908 | 3771 | |
ed2dc618 SM |
3772 | /* Some caution must be observed with overloaded functions |
3773 | and methods, since the index will not contain any overload | |
3774 | information (but NAME might contain it). */ | |
da51c347 | 3775 | |
ed2dc618 SM |
3776 | if (sym != NULL |
3777 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3778 | return stab; | |
3779 | if (with_opaque != NULL | |
3780 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3781 | stab_best = stab; | |
da51c347 | 3782 | |
ed2dc618 | 3783 | /* Keep looking through other CUs. */ |
9291a0cd | 3784 | } |
9291a0cd | 3785 | |
da51c347 | 3786 | return stab_best; |
9291a0cd TT |
3787 | } |
3788 | ||
3789 | static void | |
3790 | dw2_print_stats (struct objfile *objfile) | |
3791 | { | |
976ca316 SM |
3792 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3793 | int total = (per_objfile->per_bfd->all_comp_units.size () | |
3794 | + per_objfile->per_bfd->all_type_units.size ()); | |
ed2dc618 | 3795 | int count = 0; |
9291a0cd | 3796 | |
ed2dc618 | 3797 | for (int i = 0; i < total; ++i) |
9291a0cd | 3798 | { |
976ca316 | 3799 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3800 | |
976ca316 | 3801 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3802 | ++count; |
3803 | } | |
e4a48d9d | 3804 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3805 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3806 | } | |
3807 | ||
779bd270 DE |
3808 | /* This dumps minimal information about the index. |
3809 | It is called via "mt print objfiles". | |
3810 | One use is to verify .gdb_index has been loaded by the | |
3811 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3812 | ||
9291a0cd TT |
3813 | static void |
3814 | dw2_dump (struct objfile *objfile) | |
3815 | { | |
976ca316 | 3816 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 3817 | |
976ca316 | 3818 | gdb_assert (per_objfile->per_bfd->using_index); |
779bd270 | 3819 | printf_filtered (".gdb_index:"); |
976ca316 | 3820 | if (per_objfile->per_bfd->index_table != NULL) |
779bd270 DE |
3821 | { |
3822 | printf_filtered (" version %d\n", | |
976ca316 | 3823 | per_objfile->per_bfd->index_table->version); |
779bd270 DE |
3824 | } |
3825 | else | |
3826 | printf_filtered (" faked for \"readnow\"\n"); | |
3827 | printf_filtered ("\n"); | |
9291a0cd TT |
3828 | } |
3829 | ||
9291a0cd TT |
3830 | static void |
3831 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3832 | const char *func_name) | |
3833 | { | |
976ca316 | 3834 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
da51c347 | 3835 | |
ed2dc618 SM |
3836 | struct dw2_symtab_iterator iter; |
3837 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3838 | |
976ca316 | 3839 | dw2_symtab_iter_init (&iter, per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3840 | |
ed2dc618 | 3841 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3842 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
da51c347 | 3843 | |
9291a0cd TT |
3844 | } |
3845 | ||
3846 | static void | |
3847 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3848 | { | |
976ca316 SM |
3849 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3850 | int total_units = (per_objfile->per_bfd->all_comp_units.size () | |
3851 | + per_objfile->per_bfd->all_type_units.size ()); | |
9291a0cd | 3852 | |
ed2dc618 | 3853 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3854 | { |
976ca316 | 3855 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3856 | |
58f0c718 TT |
3857 | /* We don't want to directly expand a partial CU, because if we |
3858 | read it with the wrong language, then assertion failures can | |
3859 | be triggered later on. See PR symtab/23010. So, tell | |
3860 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3861 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
976ca316 | 3862 | dw2_instantiate_symtab (per_cu, per_objfile, true); |
9291a0cd TT |
3863 | } |
3864 | } | |
3865 | ||
3866 | static void | |
652a8996 JK |
3867 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3868 | const char *fullname) | |
9291a0cd | 3869 | { |
976ca316 | 3870 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
d4637a04 DE |
3871 | |
3872 | /* We don't need to consider type units here. | |
3873 | This is only called for examining code, e.g. expand_line_sal. | |
3874 | There can be an order of magnitude (or more) more type units | |
3875 | than comp units, and we avoid them if we can. */ | |
3876 | ||
976ca316 | 3877 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3878 | { |
3d7bb9d9 | 3879 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3880 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3881 | continue; |
3882 | ||
976ca316 | 3883 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3884 | if (file_data == NULL) |
9291a0cd TT |
3885 | continue; |
3886 | ||
b76e467d | 3887 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3888 | { |
652a8996 JK |
3889 | const char *this_fullname = file_data->file_names[j]; |
3890 | ||
3891 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3892 | { |
976ca316 | 3893 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
9291a0cd TT |
3894 | break; |
3895 | } | |
3896 | } | |
3897 | } | |
3898 | } | |
3899 | ||
9a0bacfb TV |
3900 | static void |
3901 | dw2_expand_symtabs_matching_symbol | |
3902 | (mapped_index_base &index, | |
3903 | const lookup_name_info &lookup_name_in, | |
3904 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3905 | enum search_domain kind, | |
fcf23d5b SM |
3906 | gdb::function_view<bool (offset_type)> match_callback, |
3907 | dwarf2_per_objfile *per_objfile); | |
9a0bacfb TV |
3908 | |
3909 | static void | |
3910 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
3911 | (dwarf2_per_cu_data *per_cu, |
3912 | dwarf2_per_objfile *per_objfile, | |
9a0bacfb TV |
3913 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3914 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify); | |
3915 | ||
9291a0cd | 3916 | static void |
199b4314 TT |
3917 | dw2_map_matching_symbols |
3918 | (struct objfile *objfile, | |
b054970d | 3919 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3920 | int global, |
3921 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3922 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3923 | { |
1aa98955 | 3924 | /* Used for Ada. */ |
976ca316 | 3925 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
1aa98955 | 3926 | |
9a0bacfb TV |
3927 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
3928 | ||
976ca316 | 3929 | if (per_objfile->per_bfd->index_table != nullptr) |
1aa98955 | 3930 | { |
976ca316 | 3931 | mapped_index &index = *per_objfile->per_bfd->index_table; |
1aa98955 | 3932 | |
9a0bacfb TV |
3933 | const char *match_name = name.ada ().lookup_name ().c_str (); |
3934 | auto matcher = [&] (const char *symname) | |
3935 | { | |
3936 | if (ordered_compare == nullptr) | |
3937 | return true; | |
3938 | return ordered_compare (symname, match_name) == 0; | |
3939 | }; | |
3940 | ||
3941 | dw2_expand_symtabs_matching_symbol (index, name, matcher, ALL_DOMAIN, | |
3942 | [&] (offset_type namei) | |
3943 | { | |
3944 | struct dw2_symtab_iterator iter; | |
3945 | struct dwarf2_per_cu_data *per_cu; | |
3946 | ||
976ca316 | 3947 | dw2_symtab_iter_init (&iter, per_objfile, block_kind, domain, |
e5f3ece2 | 3948 | namei); |
9a0bacfb | 3949 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3950 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 3951 | nullptr); |
9a0bacfb | 3952 | return true; |
976ca316 | 3953 | }, per_objfile); |
9a0bacfb TV |
3954 | } |
3955 | else | |
3956 | { | |
3957 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3958 | proceed assuming all symtabs have been read in. */ | |
3959 | } | |
1aa98955 TV |
3960 | |
3961 | for (compunit_symtab *cust : objfile->compunits ()) | |
3962 | { | |
3963 | const struct block *block; | |
3964 | ||
3965 | if (cust == NULL) | |
3966 | continue; | |
3967 | block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
3968 | if (!iterate_over_symbols_terminated (block, name, | |
3969 | domain, callback)) | |
3970 | return; | |
3971 | } | |
9291a0cd TT |
3972 | } |
3973 | ||
e1ef7d7a PA |
3974 | /* Starting from a search name, return the string that finds the upper |
3975 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3976 | list. Returns the empty string to indicate that the upper bound is | |
3977 | the end of the list. */ | |
3978 | ||
3979 | static std::string | |
3980 | make_sort_after_prefix_name (const char *search_name) | |
3981 | { | |
3982 | /* When looking to complete "func", we find the upper bound of all | |
3983 | symbols that start with "func" by looking for where we'd insert | |
3984 | the closest string that would follow "func" in lexicographical | |
3985 | order. Usually, that's "func"-with-last-character-incremented, | |
3986 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3987 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3988 | Especially mind the 0xff character, which is a valid character in | |
3989 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3990 | rule out compilers allowing it in identifiers. Note that | |
3991 | conveniently, strcmp/strcasecmp are specified to compare | |
3992 | characters interpreted as unsigned char. So what we do is treat | |
3993 | the whole string as a base 256 number composed of a sequence of | |
3994 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3995 | to 0, and carries 1 to the following more-significant position. | |
3996 | If the very first character in SEARCH_NAME ends up incremented | |
3997 | and carries/overflows, then the upper bound is the end of the | |
3998 | list. The string after the empty string is also the empty | |
3999 | string. | |
4000 | ||
4001 | Some examples of this operation: | |
4002 | ||
4003 | SEARCH_NAME => "+1" RESULT | |
4004 | ||
4005 | "abc" => "abd" | |
4006 | "ab\xff" => "ac" | |
4007 | "\xff" "a" "\xff" => "\xff" "b" | |
4008 | "\xff" => "" | |
4009 | "\xff\xff" => "" | |
4010 | "" => "" | |
4011 | ||
4012 | Then, with these symbols for example: | |
4013 | ||
4014 | func | |
4015 | func1 | |
4016 | fund | |
4017 | ||
4018 | completing "func" looks for symbols between "func" and | |
4019 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
4020 | which finds "func" and "func1", but not "fund". | |
4021 | ||
4022 | And with: | |
4023 | ||
4024 | funcÿ (Latin1 'ÿ' [0xff]) | |
4025 | funcÿ1 | |
4026 | fund | |
4027 | ||
4028 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
4029 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
4030 | ||
4031 | And with: | |
4032 | ||
4033 | ÿÿ (Latin1 'ÿ' [0xff]) | |
4034 | ÿÿ1 | |
4035 | ||
4036 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
4037 | the end of the list. | |
4038 | */ | |
4039 | std::string after = search_name; | |
4040 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
4041 | after.pop_back (); | |
4042 | if (!after.empty ()) | |
4043 | after.back () = (unsigned char) after.back () + 1; | |
4044 | return after; | |
4045 | } | |
4046 | ||
5c58de74 | 4047 | /* See declaration. */ |
61d96d7e | 4048 | |
5c58de74 PA |
4049 | std::pair<std::vector<name_component>::const_iterator, |
4050 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 4051 | mapped_index_base::find_name_components_bounds |
fcf23d5b SM |
4052 | (const lookup_name_info &lookup_name_without_params, language lang, |
4053 | dwarf2_per_objfile *per_objfile) const | |
3f563c84 | 4054 | { |
5c58de74 PA |
4055 | auto *name_cmp |
4056 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 4057 | |
3b00ef10 | 4058 | const char *lang_name |
e0802d59 | 4059 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 4060 | |
3f563c84 PA |
4061 | /* Comparison function object for lower_bound that matches against a |
4062 | given symbol name. */ | |
4063 | auto lookup_compare_lower = [&] (const name_component &elem, | |
4064 | const char *name) | |
4065 | { | |
fcf23d5b | 4066 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
4067 | const char *elem_name = elem_qualified + elem.name_offset; |
4068 | return name_cmp (elem_name, name) < 0; | |
4069 | }; | |
4070 | ||
4071 | /* Comparison function object for upper_bound that matches against a | |
4072 | given symbol name. */ | |
4073 | auto lookup_compare_upper = [&] (const char *name, | |
4074 | const name_component &elem) | |
4075 | { | |
fcf23d5b | 4076 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
4077 | const char *elem_name = elem_qualified + elem.name_offset; |
4078 | return name_cmp (name, elem_name) < 0; | |
4079 | }; | |
4080 | ||
5c58de74 PA |
4081 | auto begin = this->name_components.begin (); |
4082 | auto end = this->name_components.end (); | |
3f563c84 PA |
4083 | |
4084 | /* Find the lower bound. */ | |
4085 | auto lower = [&] () | |
4086 | { | |
3b00ef10 | 4087 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
4088 | return begin; |
4089 | else | |
3b00ef10 | 4090 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
4091 | } (); |
4092 | ||
4093 | /* Find the upper bound. */ | |
4094 | auto upper = [&] () | |
4095 | { | |
5c58de74 | 4096 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4097 | { |
e1ef7d7a PA |
4098 | /* In completion mode, we want UPPER to point past all |
4099 | symbols names that have the same prefix. I.e., with | |
4100 | these symbols, and completing "func": | |
4101 | ||
4102 | function << lower bound | |
4103 | function1 | |
4104 | other_function << upper bound | |
4105 | ||
4106 | We find the upper bound by looking for the insertion | |
4107 | point of "func"-with-last-character-incremented, | |
4108 | i.e. "fund". */ | |
3b00ef10 | 4109 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 4110 | if (after.empty ()) |
3f563c84 | 4111 | return end; |
e6b2f5ef PA |
4112 | return std::lower_bound (lower, end, after.c_str (), |
4113 | lookup_compare_lower); | |
3f563c84 PA |
4114 | } |
4115 | else | |
3b00ef10 | 4116 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
4117 | } (); |
4118 | ||
5c58de74 PA |
4119 | return {lower, upper}; |
4120 | } | |
4121 | ||
4122 | /* See declaration. */ | |
4123 | ||
4124 | void | |
fcf23d5b | 4125 | mapped_index_base::build_name_components (dwarf2_per_objfile *per_objfile) |
5c58de74 PA |
4126 | { |
4127 | if (!this->name_components.empty ()) | |
4128 | return; | |
4129 | ||
4130 | this->name_components_casing = case_sensitivity; | |
4131 | auto *name_cmp | |
4132 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4133 | ||
4134 | /* The code below only knows how to break apart components of C++ | |
4135 | symbol names (and other languages that use '::' as | |
3b00ef10 | 4136 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
4137 | auto count = this->symbol_name_count (); |
4138 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4139 | { |
44ed8f3e | 4140 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4141 | continue; |
4142 | ||
fcf23d5b | 4143 | const char *name = this->symbol_name_at (idx, per_objfile); |
5c58de74 PA |
4144 | |
4145 | /* Add each name component to the name component table. */ | |
4146 | unsigned int previous_len = 0; | |
3b00ef10 TT |
4147 | |
4148 | if (strstr (name, "::") != nullptr) | |
4149 | { | |
4150 | for (unsigned int current_len = cp_find_first_component (name); | |
4151 | name[current_len] != '\0'; | |
4152 | current_len += cp_find_first_component (name + current_len)) | |
4153 | { | |
4154 | gdb_assert (name[current_len] == ':'); | |
4155 | this->name_components.push_back ({previous_len, idx}); | |
4156 | /* Skip the '::'. */ | |
4157 | current_len += 2; | |
4158 | previous_len = current_len; | |
4159 | } | |
4160 | } | |
4161 | else | |
5c58de74 | 4162 | { |
3b00ef10 TT |
4163 | /* Handle the Ada encoded (aka mangled) form here. */ |
4164 | for (const char *iter = strstr (name, "__"); | |
4165 | iter != nullptr; | |
4166 | iter = strstr (iter, "__")) | |
4167 | { | |
4168 | this->name_components.push_back ({previous_len, idx}); | |
4169 | iter += 2; | |
4170 | previous_len = iter - name; | |
4171 | } | |
5c58de74 | 4172 | } |
3b00ef10 | 4173 | |
5c58de74 PA |
4174 | this->name_components.push_back ({previous_len, idx}); |
4175 | } | |
4176 | ||
4177 | /* Sort name_components elements by name. */ | |
4178 | auto name_comp_compare = [&] (const name_component &left, | |
4179 | const name_component &right) | |
4180 | { | |
fcf23d5b SM |
4181 | const char *left_qualified |
4182 | = this->symbol_name_at (left.idx, per_objfile); | |
4183 | const char *right_qualified | |
4184 | = this->symbol_name_at (right.idx, per_objfile); | |
5c58de74 PA |
4185 | |
4186 | const char *left_name = left_qualified + left.name_offset; | |
4187 | const char *right_name = right_qualified + right.name_offset; | |
4188 | ||
4189 | return name_cmp (left_name, right_name) < 0; | |
4190 | }; | |
4191 | ||
4192 | std::sort (this->name_components.begin (), | |
4193 | this->name_components.end (), | |
4194 | name_comp_compare); | |
4195 | } | |
4196 | ||
4197 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4198 | mapped_index_base instead of the containing objfile. This is split |
4199 | to a separate function in order to be able to unit test the | |
4200 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4201 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4202 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4203 | |
4204 | static void | |
4205 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4206 | (mapped_index_base &index, |
5c58de74 PA |
4207 | const lookup_name_info &lookup_name_in, |
4208 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4209 | enum search_domain kind, | |
fcf23d5b SM |
4210 | gdb::function_view<bool (offset_type)> match_callback, |
4211 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4212 | { |
4213 | lookup_name_info lookup_name_without_params | |
4214 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4215 | |
4216 | /* Build the symbol name component sorted vector, if we haven't | |
4217 | yet. */ | |
fcf23d5b | 4218 | index.build_name_components (per_objfile); |
5c58de74 | 4219 | |
3f563c84 PA |
4220 | /* The same symbol may appear more than once in the range though. |
4221 | E.g., if we're looking for symbols that complete "w", and we have | |
4222 | a symbol named "w1::w2", we'll find the two name components for | |
4223 | that same symbol in the range. To be sure we only call the | |
4224 | callback once per symbol, we first collect the symbol name | |
4225 | indexes that matched in a temporary vector and ignore | |
4226 | duplicates. */ | |
4227 | std::vector<offset_type> matches; | |
3f563c84 | 4228 | |
3b00ef10 TT |
4229 | struct name_and_matcher |
4230 | { | |
4231 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 4232 | const char *name; |
3b00ef10 TT |
4233 | |
4234 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4235 | { |
ecc6c606 | 4236 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
4237 | } |
4238 | }; | |
4239 | ||
4240 | /* A vector holding all the different symbol name matchers, for all | |
4241 | languages. */ | |
4242 | std::vector<name_and_matcher> matchers; | |
4243 | ||
4244 | for (int i = 0; i < nr_languages; i++) | |
4245 | { | |
4246 | enum language lang_e = (enum language) i; | |
4247 | ||
4248 | const language_defn *lang = language_def (lang_e); | |
4249 | symbol_name_matcher_ftype *name_matcher | |
c9debfb9 | 4250 | = lang->get_symbol_name_matcher (lookup_name_without_params); |
3f563c84 | 4251 | |
3b00ef10 | 4252 | name_and_matcher key { |
dda83cd7 | 4253 | name_matcher, |
3b00ef10 TT |
4254 | lookup_name_without_params.language_lookup_name (lang_e) |
4255 | }; | |
4256 | ||
4257 | /* Don't insert the same comparison routine more than once. | |
4258 | Note that we do this linear walk. This is not a problem in | |
4259 | practice because the number of supported languages is | |
4260 | low. */ | |
4261 | if (std::find (matchers.begin (), matchers.end (), key) | |
4262 | != matchers.end ()) | |
9291a0cd | 4263 | continue; |
3b00ef10 TT |
4264 | matchers.push_back (std::move (key)); |
4265 | ||
4266 | auto bounds | |
4267 | = index.find_name_components_bounds (lookup_name_without_params, | |
fcf23d5b | 4268 | lang_e, per_objfile); |
3b00ef10 TT |
4269 | |
4270 | /* Now for each symbol name in range, check to see if we have a name | |
4271 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4272 | ||
4273 | for (; bounds.first != bounds.second; ++bounds.first) | |
4274 | { | |
fcf23d5b SM |
4275 | const char *qualified |
4276 | = index.symbol_name_at (bounds.first->idx, per_objfile); | |
3b00ef10 TT |
4277 | |
4278 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4279 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4280 | continue; | |
9291a0cd | 4281 | |
3b00ef10 TT |
4282 | matches.push_back (bounds.first->idx); |
4283 | } | |
3f563c84 PA |
4284 | } |
4285 | ||
4286 | std::sort (matches.begin (), matches.end ()); | |
4287 | ||
4288 | /* Finally call the callback, once per match. */ | |
4289 | ULONGEST prev = -1; | |
4290 | for (offset_type idx : matches) | |
4291 | { | |
4292 | if (prev != idx) | |
4293 | { | |
3b00ef10 TT |
4294 | if (!match_callback (idx)) |
4295 | break; | |
3f563c84 PA |
4296 | prev = idx; |
4297 | } | |
4298 | } | |
4299 | ||
4300 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4301 | (offset_type)-1 are both possible values. */ | |
4302 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4303 | } | |
4304 | ||
c62446b1 PA |
4305 | #if GDB_SELF_TEST |
4306 | ||
4307 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4308 | ||
a3c5fafd PA |
4309 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4310 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4311 | mapped_index_base interface. Builds an index from the symbol list | |
4312 | passed as parameter to the constructor. */ | |
4313 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4314 | { |
4315 | public: | |
a3c5fafd PA |
4316 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4317 | : m_symbol_table (symbols) | |
c62446b1 PA |
4318 | {} |
4319 | ||
a3c5fafd | 4320 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4321 | |
a3c5fafd | 4322 | /* Return the number of names in the symbol table. */ |
632e107b | 4323 | size_t symbol_name_count () const override |
c62446b1 | 4324 | { |
a3c5fafd | 4325 | return m_symbol_table.size (); |
c62446b1 PA |
4326 | } |
4327 | ||
a3c5fafd | 4328 | /* Get the name of the symbol at IDX in the symbol table. */ |
fcf23d5b SM |
4329 | const char *symbol_name_at |
4330 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
a3c5fafd PA |
4331 | { |
4332 | return m_symbol_table[idx]; | |
4333 | } | |
c62446b1 | 4334 | |
a3c5fafd PA |
4335 | private: |
4336 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4337 | }; |
4338 | ||
4339 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4340 | string, to pass to print routines. */ | |
4341 | ||
4342 | static const char * | |
4343 | string_or_null (const char *str) | |
4344 | { | |
4345 | return str != NULL ? str : "<null>"; | |
4346 | } | |
4347 | ||
4348 | /* Check if a lookup_name_info built from | |
4349 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4350 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4351 | matching order. If no match expected, then an empty list is | |
4352 | specified. Returns true on success. On failure prints a warning | |
4353 | indicating the file:line that failed, and returns false. */ | |
4354 | ||
4355 | static bool | |
4356 | check_match (const char *file, int line, | |
4357 | mock_mapped_index &mock_index, | |
4358 | const char *name, symbol_name_match_type match_type, | |
4359 | bool completion_mode, | |
fcf23d5b SM |
4360 | std::initializer_list<const char *> expected_list, |
4361 | dwarf2_per_objfile *per_objfile) | |
c62446b1 PA |
4362 | { |
4363 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4364 | ||
4365 | bool matched = true; | |
4366 | ||
4367 | auto mismatch = [&] (const char *expected_str, | |
4368 | const char *got) | |
4369 | { | |
4370 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4371 | "expected=\"%s\", got=\"%s\"\n"), | |
4372 | file, line, | |
4373 | (match_type == symbol_name_match_type::FULL | |
4374 | ? "FULL" : "WILD"), | |
4375 | name, string_or_null (expected_str), string_or_null (got)); | |
4376 | matched = false; | |
4377 | }; | |
4378 | ||
4379 | auto expected_it = expected_list.begin (); | |
4380 | auto expected_end = expected_list.end (); | |
4381 | ||
a3c5fafd | 4382 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4383 | NULL, ALL_DOMAIN, |
4384 | [&] (offset_type idx) | |
4385 | { | |
fcf23d5b | 4386 | const char *matched_name = mock_index.symbol_name_at (idx, per_objfile); |
c62446b1 PA |
4387 | const char *expected_str |
4388 | = expected_it == expected_end ? NULL : *expected_it++; | |
4389 | ||
4390 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4391 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4392 | return true; |
fcf23d5b | 4393 | }, per_objfile); |
c62446b1 PA |
4394 | |
4395 | const char *expected_str | |
4396 | = expected_it == expected_end ? NULL : *expected_it++; | |
4397 | if (expected_str != NULL) | |
4398 | mismatch (expected_str, NULL); | |
4399 | ||
4400 | return matched; | |
4401 | } | |
4402 | ||
4403 | /* The symbols added to the mock mapped_index for testing (in | |
4404 | canonical form). */ | |
4405 | static const char *test_symbols[] = { | |
4406 | "function", | |
4407 | "std::bar", | |
4408 | "std::zfunction", | |
4409 | "std::zfunction2", | |
4410 | "w1::w2", | |
4411 | "ns::foo<char*>", | |
4412 | "ns::foo<int>", | |
4413 | "ns::foo<long>", | |
a20714ff PA |
4414 | "ns2::tmpl<int>::foo2", |
4415 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4416 | |
e1ef7d7a PA |
4417 | /* These are used to check that the increment-last-char in the |
4418 | matching algorithm for completion doesn't match "t1_fund" when | |
4419 | completing "t1_func". */ | |
4420 | "t1_func", | |
4421 | "t1_func1", | |
4422 | "t1_fund", | |
4423 | "t1_fund1", | |
4424 | ||
4425 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4426 | cp-name-parser understands this as a single identifier ("função" | |
4427 | is "function" in PT). */ | |
4428 | u8"u8função", | |
4429 | ||
4430 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4431 | "yfunc\377", | |
4432 | ||
4433 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4434 | "\377", | |
4435 | "\377\377123", | |
4436 | ||
c62446b1 PA |
4437 | /* A name with all sorts of complications. Starts with "z" to make |
4438 | it easier for the completion tests below. */ | |
4439 | #define Z_SYM_NAME \ | |
4440 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4441 | "::tuple<(anonymous namespace)::ui*, " \ | |
4442 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4443 | ||
4444 | Z_SYM_NAME | |
4445 | }; | |
4446 | ||
a3c5fafd PA |
4447 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4448 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4449 | in completion mode. */ | |
5c58de74 PA |
4450 | |
4451 | static bool | |
a3c5fafd | 4452 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 | 4453 | const char *search_name, |
fcf23d5b SM |
4454 | gdb::array_view<const char *> expected_syms, |
4455 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4456 | { |
4457 | lookup_name_info lookup_name (search_name, | |
4458 | symbol_name_match_type::FULL, true); | |
4459 | ||
3b00ef10 | 4460 | auto bounds = index.find_name_components_bounds (lookup_name, |
fcf23d5b SM |
4461 | language_cplus, |
4462 | per_objfile); | |
5c58de74 PA |
4463 | |
4464 | size_t distance = std::distance (bounds.first, bounds.second); | |
4465 | if (distance != expected_syms.size ()) | |
4466 | return false; | |
4467 | ||
4468 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4469 | { | |
4470 | auto nc_elem = bounds.first + exp_elem; | |
fcf23d5b | 4471 | const char *qualified = index.symbol_name_at (nc_elem->idx, per_objfile); |
5c58de74 PA |
4472 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) |
4473 | return false; | |
4474 | } | |
4475 | ||
4476 | return true; | |
4477 | } | |
4478 | ||
4479 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4480 | method. */ | |
4481 | ||
c62446b1 | 4482 | static void |
5c58de74 PA |
4483 | test_mapped_index_find_name_component_bounds () |
4484 | { | |
4485 | mock_mapped_index mock_index (test_symbols); | |
4486 | ||
fcf23d5b | 4487 | mock_index.build_name_components (NULL /* per_objfile */); |
5c58de74 PA |
4488 | |
4489 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4490 | method in completion mode. */ | |
4491 | { | |
4492 | static const char *expected_syms[] = { | |
4493 | "t1_func", | |
4494 | "t1_func1", | |
5c58de74 PA |
4495 | }; |
4496 | ||
fcf23d5b SM |
4497 | SELF_CHECK (check_find_bounds_finds |
4498 | (mock_index, "t1_func", expected_syms, | |
4499 | NULL /* per_objfile */)); | |
5c58de74 PA |
4500 | } |
4501 | ||
4502 | /* Check that the increment-last-char in the name matching algorithm | |
4503 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4504 | { | |
4505 | static const char *expected_syms1[] = { | |
4506 | "\377", | |
4507 | "\377\377123", | |
4508 | }; | |
fcf23d5b SM |
4509 | SELF_CHECK (check_find_bounds_finds |
4510 | (mock_index, "\377", expected_syms1, NULL /* per_objfile */)); | |
5c58de74 PA |
4511 | |
4512 | static const char *expected_syms2[] = { | |
4513 | "\377\377123", | |
4514 | }; | |
fcf23d5b SM |
4515 | SELF_CHECK (check_find_bounds_finds |
4516 | (mock_index, "\377\377", expected_syms2, | |
4517 | NULL /* per_objfile */)); | |
5c58de74 PA |
4518 | } |
4519 | } | |
4520 | ||
4521 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4522 | ||
4523 | static void | |
4524 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4525 | { |
4526 | mock_mapped_index mock_index (test_symbols); | |
4527 | ||
4528 | /* We let all tests run until the end even if some fails, for debug | |
4529 | convenience. */ | |
4530 | bool any_mismatch = false; | |
4531 | ||
4532 | /* Create the expected symbols list (an initializer_list). Needed | |
4533 | because lists have commas, and we need to pass them to CHECK, | |
4534 | which is a macro. */ | |
4535 | #define EXPECT(...) { __VA_ARGS__ } | |
4536 | ||
4537 | /* Wrapper for check_match that passes down the current | |
4538 | __FILE__/__LINE__. */ | |
4539 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4540 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4541 | mock_index, \ | |
4542 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
fcf23d5b | 4543 | EXPECTED_LIST, NULL) |
c62446b1 PA |
4544 | |
4545 | /* Identity checks. */ | |
4546 | for (const char *sym : test_symbols) | |
4547 | { | |
4548 | /* Should be able to match all existing symbols. */ | |
4549 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4550 | EXPECT (sym)); | |
4551 | ||
4552 | /* Should be able to match all existing symbols with | |
4553 | parameters. */ | |
4554 | std::string with_params = std::string (sym) + "(int)"; | |
4555 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4556 | EXPECT (sym)); | |
4557 | ||
4558 | /* Should be able to match all existing symbols with | |
4559 | parameters and qualifiers. */ | |
4560 | with_params = std::string (sym) + " ( int ) const"; | |
4561 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4562 | EXPECT (sym)); | |
4563 | ||
4564 | /* This should really find sym, but cp-name-parser.y doesn't | |
4565 | know about lvalue/rvalue qualifiers yet. */ | |
4566 | with_params = std::string (sym) + " ( int ) &&"; | |
4567 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4568 | {}); | |
4569 | } | |
4570 | ||
e1ef7d7a PA |
4571 | /* Check that the name matching algorithm for completion doesn't get |
4572 | confused with Latin1 'ÿ' / 0xff. */ | |
4573 | { | |
4574 | static const char str[] = "\377"; | |
4575 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4576 | EXPECT ("\377", "\377\377123")); | |
4577 | } | |
4578 | ||
4579 | /* Check that the increment-last-char in the matching algorithm for | |
4580 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4581 | { | |
4582 | static const char str[] = "t1_func"; | |
4583 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4584 | EXPECT ("t1_func", "t1_func1")); | |
4585 | } | |
4586 | ||
c62446b1 PA |
4587 | /* Check that completion mode works at each prefix of the expected |
4588 | symbol name. */ | |
4589 | { | |
4590 | static const char str[] = "function(int)"; | |
4591 | size_t len = strlen (str); | |
4592 | std::string lookup; | |
4593 | ||
4594 | for (size_t i = 1; i < len; i++) | |
4595 | { | |
4596 | lookup.assign (str, i); | |
4597 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4598 | EXPECT ("function")); | |
4599 | } | |
4600 | } | |
4601 | ||
4602 | /* While "w" is a prefix of both components, the match function | |
4603 | should still only be called once. */ | |
4604 | { | |
4605 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4606 | EXPECT ("w1::w2")); | |
a20714ff PA |
4607 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4608 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4609 | } |
4610 | ||
4611 | /* Same, with a "complicated" symbol. */ | |
4612 | { | |
4613 | static const char str[] = Z_SYM_NAME; | |
4614 | size_t len = strlen (str); | |
4615 | std::string lookup; | |
4616 | ||
4617 | for (size_t i = 1; i < len; i++) | |
4618 | { | |
4619 | lookup.assign (str, i); | |
4620 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4621 | EXPECT (Z_SYM_NAME)); | |
4622 | } | |
4623 | } | |
4624 | ||
4625 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4626 | { | |
4627 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4628 | {}); | |
4629 | } | |
4630 | ||
4631 | /* A complete symbol with parameters matches any overload, since the | |
4632 | index has no overload info. */ | |
4633 | { | |
4634 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4635 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4636 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4637 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4638 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4639 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4640 | } |
4641 | ||
4642 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4643 | template argument list. */ | |
4644 | { | |
4645 | static const char expected[] = "ns::foo<int>"; | |
4646 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4647 | EXPECT (expected)); | |
a20714ff PA |
4648 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4649 | EXPECT (expected)); | |
c62446b1 PA |
4650 | } |
4651 | ||
4652 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4653 | template argument list that includes a pointer. */ | |
4654 | { | |
4655 | static const char expected[] = "ns::foo<char*>"; | |
4656 | /* Try both completion and non-completion modes. */ | |
4657 | static const bool completion_mode[2] = {false, true}; | |
4658 | for (size_t i = 0; i < 2; i++) | |
4659 | { | |
4660 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4661 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4662 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4663 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4664 | |
4665 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4666 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4667 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4668 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4669 | } |
4670 | } | |
4671 | ||
4672 | { | |
4673 | /* Check method qualifiers are ignored. */ | |
4674 | static const char expected[] = "ns::foo<char*>"; | |
4675 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4676 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4677 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4678 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4679 | CHECK_MATCH ("foo < char * > ( int ) const", |
4680 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4681 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4682 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4683 | } |
4684 | ||
4685 | /* Test lookup names that don't match anything. */ | |
4686 | { | |
a20714ff PA |
4687 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4688 | {}); | |
4689 | ||
c62446b1 PA |
4690 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4691 | {}); | |
4692 | } | |
4693 | ||
a20714ff PA |
4694 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4695 | which should not be confused with a parameter list. */ | |
4696 | { | |
4697 | static const char *syms[] = { | |
4698 | "A::B::C", | |
4699 | "B::C", | |
4700 | "C", | |
4701 | "A :: B :: C ( int )", | |
4702 | "B :: C ( int )", | |
4703 | "C ( int )", | |
4704 | }; | |
4705 | ||
4706 | for (const char *s : syms) | |
4707 | { | |
4708 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4709 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4710 | } | |
4711 | } | |
4712 | ||
4713 | { | |
4714 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4715 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4716 | EXPECT (expected)); | |
4717 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4718 | EXPECT (expected)); | |
4719 | } | |
4720 | ||
c62446b1 PA |
4721 | SELF_CHECK (!any_mismatch); |
4722 | ||
4723 | #undef EXPECT | |
4724 | #undef CHECK_MATCH | |
4725 | } | |
4726 | ||
5c58de74 PA |
4727 | static void |
4728 | run_test () | |
4729 | { | |
4730 | test_mapped_index_find_name_component_bounds (); | |
4731 | test_dw2_expand_symtabs_matching_symbol (); | |
4732 | } | |
4733 | ||
c62446b1 PA |
4734 | }} // namespace selftests::dw2_expand_symtabs_matching |
4735 | ||
4736 | #endif /* GDB_SELF_TEST */ | |
4737 | ||
4b514bc8 JK |
4738 | /* If FILE_MATCHER is NULL or if PER_CU has |
4739 | dwarf2_per_cu_quick_data::MARK set (see | |
4740 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4741 | EXPANSION_NOTIFY on it. */ | |
4742 | ||
4743 | static void | |
4744 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
4745 | (dwarf2_per_cu_data *per_cu, |
4746 | dwarf2_per_objfile *per_objfile, | |
4b514bc8 JK |
4747 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4748 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4749 | { | |
4750 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4751 | { | |
af758d11 | 4752 | bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); |
4b514bc8 | 4753 | |
97a1449a SM |
4754 | compunit_symtab *symtab |
4755 | = dw2_instantiate_symtab (per_cu, per_objfile, false); | |
af758d11 | 4756 | gdb_assert (symtab != nullptr); |
4b514bc8 | 4757 | |
af758d11 SM |
4758 | if (expansion_notify != NULL && symtab_was_null) |
4759 | expansion_notify (symtab); | |
4b514bc8 JK |
4760 | } |
4761 | } | |
4762 | ||
3f563c84 PA |
4763 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4764 | matched, to expand corresponding CUs that were marked. IDX is the | |
4765 | index of the symbol name that matched. */ | |
4766 | ||
4767 | static void | |
4768 | dw2_expand_marked_cus | |
976ca316 | 4769 | (dwarf2_per_objfile *per_objfile, offset_type idx, |
3f563c84 PA |
4770 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4771 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4772 | search_domain kind) | |
4773 | { | |
3f563c84 PA |
4774 | offset_type *vec, vec_len, vec_idx; |
4775 | bool global_seen = false; | |
976ca316 | 4776 | mapped_index &index = *per_objfile->per_bfd->index_table; |
3f563c84 | 4777 | |
61920122 | 4778 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4779 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4780 | vec_len = MAYBE_SWAP (vec[0]); |
4781 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4782 | { | |
61920122 PA |
4783 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4784 | /* This value is only valid for index versions >= 7. */ | |
4785 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4786 | gdb_index_symbol_kind symbol_kind = | |
4787 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4788 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4789 | /* Only check the symbol attributes if they're present. | |
4790 | Indices prior to version 7 don't record them, | |
4791 | and indices >= 7 may elide them for certain symbols | |
4792 | (gold does this). */ | |
4793 | int attrs_valid = | |
4794 | (index.version >= 7 | |
4795 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4796 | ||
4797 | /* Work around gold/15646. */ | |
f030440d TV |
4798 | if (attrs_valid |
4799 | && !is_static | |
4800 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
9291a0cd | 4801 | { |
f030440d | 4802 | if (global_seen) |
61920122 | 4803 | continue; |
f030440d TV |
4804 | |
4805 | global_seen = true; | |
61920122 | 4806 | } |
3190f0c6 | 4807 | |
61920122 PA |
4808 | /* Only check the symbol's kind if it has one. */ |
4809 | if (attrs_valid) | |
4810 | { | |
4811 | switch (kind) | |
8943b874 | 4812 | { |
61920122 PA |
4813 | case VARIABLES_DOMAIN: |
4814 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4815 | continue; | |
4816 | break; | |
4817 | case FUNCTIONS_DOMAIN: | |
4818 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4819 | continue; |
61920122 PA |
4820 | break; |
4821 | case TYPES_DOMAIN: | |
4822 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4823 | continue; | |
4824 | break; | |
59c35742 AB |
4825 | case MODULES_DOMAIN: |
4826 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4827 | continue; | |
4828 | break; | |
61920122 PA |
4829 | default: |
4830 | break; | |
8943b874 | 4831 | } |
61920122 | 4832 | } |
8943b874 | 4833 | |
61920122 | 4834 | /* Don't crash on bad data. */ |
976ca316 SM |
4835 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
4836 | + per_objfile->per_bfd->all_type_units.size ())) | |
61920122 | 4837 | { |
b98664d3 | 4838 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 4839 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
61920122 PA |
4840 | continue; |
4841 | } | |
4842 | ||
976ca316 SM |
4843 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
4844 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, | |
4b514bc8 | 4845 | expansion_notify); |
61920122 PA |
4846 | } |
4847 | } | |
4848 | ||
4b514bc8 JK |
4849 | /* If FILE_MATCHER is non-NULL, set all the |
4850 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4851 | that match FILE_MATCHER. */ | |
4852 | ||
61920122 | 4853 | static void |
4b514bc8 | 4854 | dw_expand_symtabs_matching_file_matcher |
976ca316 | 4855 | (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 4856 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) |
61920122 | 4857 | { |
4b514bc8 | 4858 | if (file_matcher == NULL) |
61920122 PA |
4859 | return; |
4860 | ||
4b514bc8 JK |
4861 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4862 | htab_eq_pointer, | |
4863 | NULL, xcalloc, xfree)); | |
4864 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4865 | htab_eq_pointer, |
4866 | NULL, xcalloc, xfree)); | |
61920122 | 4867 | |
4b514bc8 JK |
4868 | /* The rule is CUs specify all the files, including those used by |
4869 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4870 | |
976ca316 | 4871 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4872 | { |
927aa2e7 JK |
4873 | QUIT; |
4874 | ||
4875 | per_cu->v.quick->mark = 0; | |
4876 | ||
4877 | /* We only need to look at symtabs not already expanded. */ | |
976ca316 | 4878 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4879 | continue; |
4880 | ||
976ca316 | 4881 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4882 | if (file_data == NULL) |
4883 | continue; | |
4884 | ||
4885 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4886 | continue; | |
4887 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4888 | { | |
4889 | per_cu->v.quick->mark = 1; | |
4890 | continue; | |
4891 | } | |
4892 | ||
b76e467d | 4893 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4894 | { |
4895 | const char *this_real_name; | |
4896 | ||
4897 | if (file_matcher (file_data->file_names[j], false)) | |
4898 | { | |
4899 | per_cu->v.quick->mark = 1; | |
4900 | break; | |
4901 | } | |
4902 | ||
4903 | /* Before we invoke realpath, which can get expensive when many | |
4904 | files are involved, do a quick comparison of the basenames. */ | |
4905 | if (!basenames_may_differ | |
4906 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4907 | true)) | |
4908 | continue; | |
4909 | ||
976ca316 | 4910 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
927aa2e7 JK |
4911 | if (file_matcher (this_real_name, false)) |
4912 | { | |
4913 | per_cu->v.quick->mark = 1; | |
4914 | break; | |
4915 | } | |
4916 | } | |
4917 | ||
b76e467d SM |
4918 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4919 | ? visited_found.get () | |
4920 | : visited_not_found.get (), | |
4921 | file_data, INSERT); | |
927aa2e7 JK |
4922 | *slot = file_data; |
4923 | } | |
4924 | } | |
4925 | ||
4926 | static void | |
4927 | dw2_expand_symtabs_matching | |
4928 | (struct objfile *objfile, | |
4929 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 4930 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
4931 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
4932 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4933 | enum search_domain kind) | |
4934 | { | |
976ca316 | 4935 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 JK |
4936 | |
4937 | /* index_table is NULL if OBJF_READNOW. */ | |
976ca316 | 4938 | if (!per_objfile->per_bfd->index_table) |
927aa2e7 JK |
4939 | return; |
4940 | ||
976ca316 | 4941 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
927aa2e7 | 4942 | |
c1a66c06 TV |
4943 | if (symbol_matcher == NULL && lookup_name == NULL) |
4944 | { | |
976ca316 | 4945 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
4946 | { |
4947 | QUIT; | |
4948 | ||
976ca316 | 4949 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, |
97a1449a | 4950 | file_matcher, expansion_notify); |
c1a66c06 TV |
4951 | } |
4952 | return; | |
4953 | } | |
4954 | ||
976ca316 | 4955 | mapped_index &index = *per_objfile->per_bfd->index_table; |
927aa2e7 | 4956 | |
c1a66c06 | 4957 | dw2_expand_symtabs_matching_symbol (index, *lookup_name, |
927aa2e7 JK |
4958 | symbol_matcher, |
4959 | kind, [&] (offset_type idx) | |
4960 | { | |
976ca316 SM |
4961 | dw2_expand_marked_cus (per_objfile, idx, file_matcher, expansion_notify, |
4962 | kind); | |
3b00ef10 | 4963 | return true; |
976ca316 | 4964 | }, per_objfile); |
927aa2e7 JK |
4965 | } |
4966 | ||
4967 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4968 | symtab. */ | |
4969 | ||
4970 | static struct compunit_symtab * | |
4971 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4972 | CORE_ADDR pc) | |
4973 | { | |
4974 | int i; | |
4975 | ||
4976 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4977 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4978 | return cust; | |
4979 | ||
4980 | if (cust->includes == NULL) | |
4981 | return NULL; | |
4982 | ||
4983 | for (i = 0; cust->includes[i]; ++i) | |
4984 | { | |
4985 | struct compunit_symtab *s = cust->includes[i]; | |
4986 | ||
4987 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4988 | if (s != NULL) | |
4989 | return s; | |
4990 | } | |
4991 | ||
4992 | return NULL; | |
4993 | } | |
4994 | ||
4995 | static struct compunit_symtab * | |
4996 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4997 | struct bound_minimal_symbol msymbol, | |
4998 | CORE_ADDR pc, | |
4999 | struct obj_section *section, | |
5000 | int warn_if_readin) | |
5001 | { | |
5002 | struct dwarf2_per_cu_data *data; | |
5003 | struct compunit_symtab *result; | |
5004 | ||
d320c2b5 | 5005 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
5006 | return NULL; |
5007 | ||
b3b3bada | 5008 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
5009 | data = (struct dwarf2_per_cu_data *) addrmap_find |
5010 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
5011 | if (!data) |
5012 | return NULL; | |
5013 | ||
af758d11 SM |
5014 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
5015 | if (warn_if_readin && per_objfile->symtab_set_p (data)) | |
927aa2e7 | 5016 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
08feed99 | 5017 | paddress (objfile->arch (), pc)); |
927aa2e7 | 5018 | |
97a1449a SM |
5019 | result = recursively_find_pc_sect_compunit_symtab |
5020 | (dw2_instantiate_symtab (data, per_objfile, false), pc); | |
5021 | ||
927aa2e7 JK |
5022 | gdb_assert (result != NULL); |
5023 | return result; | |
5024 | } | |
5025 | ||
5026 | static void | |
5027 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
5028 | void *data, int need_fullname) | |
5029 | { | |
976ca316 | 5030 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 | 5031 | |
976ca316 | 5032 | if (!per_objfile->per_bfd->filenames_cache) |
927aa2e7 | 5033 | { |
976ca316 | 5034 | per_objfile->per_bfd->filenames_cache.emplace (); |
927aa2e7 JK |
5035 | |
5036 | htab_up visited (htab_create_alloc (10, | |
5037 | htab_hash_pointer, htab_eq_pointer, | |
5038 | NULL, xcalloc, xfree)); | |
5039 | ||
5040 | /* The rule is CUs specify all the files, including those used | |
5041 | by any TU, so there's no need to scan TUs here. We can | |
5042 | ignore file names coming from already-expanded CUs. */ | |
5043 | ||
976ca316 | 5044 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 5045 | { |
976ca316 | 5046 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5047 | { |
5048 | void **slot = htab_find_slot (visited.get (), | |
5049 | per_cu->v.quick->file_names, | |
5050 | INSERT); | |
5051 | ||
5052 | *slot = per_cu->v.quick->file_names; | |
5053 | } | |
5054 | } | |
5055 | ||
976ca316 | 5056 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 5057 | { |
927aa2e7 | 5058 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 5059 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5060 | continue; |
5061 | ||
ab432490 | 5062 | quick_file_names *file_data |
976ca316 | 5063 | = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
5064 | if (file_data == NULL) |
5065 | continue; | |
5066 | ||
b76e467d | 5067 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
5068 | if (*slot) |
5069 | { | |
5070 | /* Already visited. */ | |
5071 | continue; | |
5072 | } | |
5073 | *slot = file_data; | |
5074 | ||
5075 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5076 | { | |
5077 | const char *filename = file_data->file_names[j]; | |
976ca316 | 5078 | per_objfile->per_bfd->filenames_cache->seen (filename); |
927aa2e7 JK |
5079 | } |
5080 | } | |
5081 | } | |
5082 | ||
976ca316 | 5083 | per_objfile->per_bfd->filenames_cache->traverse ([&] (const char *filename) |
927aa2e7 JK |
5084 | { |
5085 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5086 | ||
5087 | if (need_fullname) | |
5088 | this_real_name = gdb_realpath (filename); | |
5089 | (*fun) (filename, this_real_name.get (), data); | |
5090 | }); | |
5091 | } | |
5092 | ||
5093 | static int | |
5094 | dw2_has_symbols (struct objfile *objfile) | |
5095 | { | |
5096 | return 1; | |
5097 | } | |
5098 | ||
5099 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5100 | { | |
5101 | dw2_has_symbols, | |
5102 | dw2_find_last_source_symtab, | |
5103 | dw2_forget_cached_source_info, | |
5104 | dw2_map_symtabs_matching_filename, | |
5105 | dw2_lookup_symbol, | |
d3214198 | 5106 | NULL, |
927aa2e7 JK |
5107 | dw2_print_stats, |
5108 | dw2_dump, | |
927aa2e7 JK |
5109 | dw2_expand_symtabs_for_function, |
5110 | dw2_expand_all_symtabs, | |
5111 | dw2_expand_symtabs_with_fullname, | |
5112 | dw2_map_matching_symbols, | |
5113 | dw2_expand_symtabs_matching, | |
5114 | dw2_find_pc_sect_compunit_symtab, | |
5115 | NULL, | |
5116 | dw2_map_symbol_filenames | |
5117 | }; | |
5118 | ||
5119 | /* DWARF-5 debug_names reader. */ | |
5120 | ||
5121 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5122 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5123 | ||
5124 | /* A helper function that reads the .debug_names section in SECTION | |
5125 | and fills in MAP. FILENAME is the name of the file containing the | |
5126 | section; it is used for error reporting. | |
5127 | ||
5128 | Returns true if all went well, false otherwise. */ | |
5129 | ||
5130 | static bool | |
5131 | read_debug_names_from_section (struct objfile *objfile, | |
5132 | const char *filename, | |
5133 | struct dwarf2_section_info *section, | |
5134 | mapped_debug_names &map) | |
5135 | { | |
96b79293 | 5136 | if (section->empty ()) |
927aa2e7 JK |
5137 | return false; |
5138 | ||
5139 | /* Older elfutils strip versions could keep the section in the main | |
5140 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5141 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
5142 | return false; |
5143 | ||
96b79293 | 5144 | section->read (objfile); |
927aa2e7 | 5145 | |
08feed99 | 5146 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
5147 | |
5148 | const gdb_byte *addr = section->buffer; | |
5149 | ||
96b79293 | 5150 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
5151 | |
5152 | unsigned int bytes_read; | |
5153 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5154 | addr += bytes_read; | |
5155 | ||
5156 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5157 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5158 | if (bytes_read + length != section->size) | |
5159 | { | |
5160 | /* There may be multiple per-CU indices. */ | |
5161 | warning (_("Section .debug_names in %s length %s does not match " | |
5162 | "section length %s, ignoring .debug_names."), | |
5163 | filename, plongest (bytes_read + length), | |
5164 | pulongest (section->size)); | |
5165 | return false; | |
5166 | } | |
5167 | ||
5168 | /* The version number. */ | |
5169 | uint16_t version = read_2_bytes (abfd, addr); | |
5170 | addr += 2; | |
5171 | if (version != 5) | |
5172 | { | |
5173 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5174 | "ignoring .debug_names."), | |
5175 | filename, version); | |
5176 | return false; | |
5177 | } | |
5178 | ||
5179 | /* Padding. */ | |
5180 | uint16_t padding = read_2_bytes (abfd, addr); | |
5181 | addr += 2; | |
5182 | if (padding != 0) | |
5183 | { | |
5184 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5185 | "ignoring .debug_names."), | |
5186 | filename, padding); | |
5187 | return false; | |
5188 | } | |
5189 | ||
5190 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5191 | map.cu_count = read_4_bytes (abfd, addr); | |
5192 | addr += 4; | |
5193 | ||
5194 | /* local_type_unit_count - The number of TUs in the local TU | |
5195 | list. */ | |
5196 | map.tu_count = read_4_bytes (abfd, addr); | |
5197 | addr += 4; | |
5198 | ||
5199 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5200 | list. */ | |
5201 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5202 | addr += 4; | |
5203 | if (foreign_tu_count != 0) | |
5204 | { | |
5205 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5206 | "ignoring .debug_names."), | |
5207 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5208 | return false; | |
5209 | } | |
5210 | ||
5211 | /* bucket_count - The number of hash buckets in the hash lookup | |
5212 | table. */ | |
5213 | map.bucket_count = read_4_bytes (abfd, addr); | |
5214 | addr += 4; | |
5215 | ||
5216 | /* name_count - The number of unique names in the index. */ | |
5217 | map.name_count = read_4_bytes (abfd, addr); | |
5218 | addr += 4; | |
5219 | ||
5220 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5221 | table. */ | |
5222 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5223 | addr += 4; | |
5224 | ||
5225 | /* augmentation_string_size - The size in bytes of the augmentation | |
5226 | string. This value is rounded up to a multiple of 4. */ | |
5227 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5228 | addr += 4; | |
5229 | map.augmentation_is_gdb = ((augmentation_string_size | |
5230 | == sizeof (dwarf5_augmentation)) | |
5231 | && memcmp (addr, dwarf5_augmentation, | |
5232 | sizeof (dwarf5_augmentation)) == 0); | |
5233 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5234 | addr += augmentation_string_size; | |
5235 | ||
5236 | /* List of CUs */ | |
5237 | map.cu_table_reordered = addr; | |
5238 | addr += map.cu_count * map.offset_size; | |
5239 | ||
5240 | /* List of Local TUs */ | |
5241 | map.tu_table_reordered = addr; | |
5242 | addr += map.tu_count * map.offset_size; | |
5243 | ||
5244 | /* Hash Lookup Table */ | |
5245 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5246 | addr += map.bucket_count * 4; | |
5247 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5248 | addr += map.name_count * 4; | |
5249 | ||
5250 | /* Name Table */ | |
5251 | map.name_table_string_offs_reordered = addr; | |
5252 | addr += map.name_count * map.offset_size; | |
5253 | map.name_table_entry_offs_reordered = addr; | |
5254 | addr += map.name_count * map.offset_size; | |
5255 | ||
5256 | const gdb_byte *abbrev_table_start = addr; | |
5257 | for (;;) | |
5258 | { | |
927aa2e7 JK |
5259 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5260 | addr += bytes_read; | |
5261 | if (index_num == 0) | |
5262 | break; | |
5263 | ||
5264 | const auto insertpair | |
5265 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5266 | if (!insertpair.second) | |
5267 | { | |
5268 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5269 | "ignoring .debug_names."), | |
5270 | filename, pulongest (index_num)); | |
5271 | return false; | |
5272 | } | |
5273 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5274 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5275 | addr += bytes_read; | |
5276 | ||
5277 | for (;;) | |
5278 | { | |
5279 | mapped_debug_names::index_val::attr attr; | |
5280 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5281 | addr += bytes_read; | |
5282 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5283 | addr += bytes_read; | |
5284 | if (attr.form == DW_FORM_implicit_const) | |
5285 | { | |
5286 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5287 | &bytes_read); | |
5288 | addr += bytes_read; | |
5289 | } | |
5290 | if (attr.dw_idx == 0 && attr.form == 0) | |
5291 | break; | |
5292 | indexval.attr_vec.push_back (std::move (attr)); | |
5293 | } | |
5294 | } | |
5295 | if (addr != abbrev_table_start + abbrev_table_size) | |
5296 | { | |
5297 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5298 | "of size %s vs. written as %u, ignoring .debug_names."), |
5299 | filename, plongest (addr - abbrev_table_start), | |
5300 | abbrev_table_size); | |
927aa2e7 JK |
5301 | return false; |
5302 | } | |
5303 | map.entry_pool = addr; | |
5304 | ||
5305 | return true; | |
5306 | } | |
5307 | ||
5308 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5309 | list. */ | |
5310 | ||
5311 | static void | |
168c9250 | 5312 | create_cus_from_debug_names_list (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5313 | const mapped_debug_names &map, |
5314 | dwarf2_section_info §ion, | |
b76e467d | 5315 | bool is_dwz) |
927aa2e7 | 5316 | { |
3ee6bb11 TV |
5317 | if (!map.augmentation_is_gdb) |
5318 | { | |
5319 | for (uint32_t i = 0; i < map.cu_count; ++i) | |
5320 | { | |
5321 | sect_offset sect_off | |
5322 | = (sect_offset) (extract_unsigned_integer | |
5323 | (map.cu_table_reordered + i * map.offset_size, | |
5324 | map.offset_size, | |
5325 | map.dwarf5_byte_order)); | |
5326 | /* We don't know the length of the CU, because the CU list in a | |
5327 | .debug_names index can be incomplete, so we can't use the start of | |
5328 | the next CU as end of this CU. We create the CUs here with length 0, | |
5329 | and in cutu_reader::cutu_reader we'll fill in the actual length. */ | |
5330 | dwarf2_per_cu_data *per_cu | |
168c9250 SM |
5331 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, sect_off, 0); |
5332 | per_bfd->all_comp_units.push_back (per_cu); | |
3ee6bb11 TV |
5333 | } |
5334 | } | |
5335 | ||
927aa2e7 JK |
5336 | sect_offset sect_off_prev; |
5337 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5338 | { | |
5339 | sect_offset sect_off_next; | |
5340 | if (i < map.cu_count) | |
5341 | { | |
5342 | sect_off_next | |
5343 | = (sect_offset) (extract_unsigned_integer | |
5344 | (map.cu_table_reordered + i * map.offset_size, | |
5345 | map.offset_size, | |
5346 | map.dwarf5_byte_order)); | |
5347 | } | |
5348 | else | |
5349 | sect_off_next = (sect_offset) section.size; | |
5350 | if (i >= 1) | |
5351 | { | |
5352 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5353 | dwarf2_per_cu_data *per_cu |
168c9250 | 5354 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
927aa2e7 | 5355 | sect_off_prev, length); |
168c9250 | 5356 | per_bfd->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5357 | } |
5358 | sect_off_prev = sect_off_next; | |
5359 | } | |
5360 | } | |
5361 | ||
5362 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5363 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5364 | |
5365 | static void | |
168c9250 | 5366 | create_cus_from_debug_names (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5367 | const mapped_debug_names &map, |
5368 | const mapped_debug_names &dwz_map) | |
5369 | { | |
168c9250 SM |
5370 | gdb_assert (per_bfd->all_comp_units.empty ()); |
5371 | per_bfd->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5372 | |
168c9250 | 5373 | create_cus_from_debug_names_list (per_bfd, map, per_bfd->info, |
b76e467d | 5374 | false /* is_dwz */); |
927aa2e7 JK |
5375 | |
5376 | if (dwz_map.cu_count == 0) | |
5377 | return; | |
5378 | ||
168c9250 SM |
5379 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
5380 | create_cus_from_debug_names_list (per_bfd, dwz_map, dwz->info, | |
b76e467d | 5381 | true /* is_dwz */); |
927aa2e7 JK |
5382 | } |
5383 | ||
5384 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5385 | elements of all the CUs and return true. Otherwise, return false. */ | |
5386 | ||
5387 | static bool | |
976ca316 | 5388 | dwarf2_read_debug_names (dwarf2_per_objfile *per_objfile) |
927aa2e7 | 5389 | { |
fcf23d5b SM |
5390 | std::unique_ptr<mapped_debug_names> map (new mapped_debug_names); |
5391 | mapped_debug_names dwz_map; | |
976ca316 | 5392 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 5393 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
927aa2e7 JK |
5394 | |
5395 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
976ca316 | 5396 | &per_objfile->per_bfd->debug_names, *map)) |
927aa2e7 JK |
5397 | return false; |
5398 | ||
5399 | /* Don't use the index if it's empty. */ | |
22ca247e | 5400 | if (map->name_count == 0) |
927aa2e7 JK |
5401 | return false; |
5402 | ||
5403 | /* If there is a .dwz file, read it so we can get its CU list as | |
5404 | well. */ | |
f8c41851 | 5405 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
927aa2e7 JK |
5406 | if (dwz != NULL) |
5407 | { | |
5408 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5409 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5410 | &dwz->debug_names, dwz_map)) |
5411 | { | |
5412 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5413 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5414 | return false; |
5415 | } | |
5416 | } | |
5417 | ||
f8c41851 | 5418 | create_cus_from_debug_names (per_bfd, *map, dwz_map); |
927aa2e7 | 5419 | |
22ca247e | 5420 | if (map->tu_count != 0) |
927aa2e7 JK |
5421 | { |
5422 | /* We can only handle a single .debug_types when we have an | |
5423 | index. */ | |
f8c41851 | 5424 | if (per_bfd->types.size () != 1) |
927aa2e7 JK |
5425 | return false; |
5426 | ||
f8c41851 | 5427 | dwarf2_section_info *section = &per_bfd->types[0]; |
927aa2e7 JK |
5428 | |
5429 | create_signatured_type_table_from_debug_names | |
f8c41851 | 5430 | (per_objfile, *map, section, &per_bfd->abbrev); |
927aa2e7 JK |
5431 | } |
5432 | ||
f8c41851 | 5433 | create_addrmap_from_aranges (per_objfile, &per_bfd->debug_aranges); |
927aa2e7 | 5434 | |
f8c41851 SM |
5435 | per_bfd->debug_names_table = std::move (map); |
5436 | per_bfd->using_index = 1; | |
5437 | per_bfd->quick_file_names_table = | |
976ca316 | 5438 | create_quick_file_names_table (per_objfile->per_bfd->all_comp_units.size ()); |
927aa2e7 | 5439 | |
f8c41851 SM |
5440 | /* Save partial symtabs in the per_bfd object, for the benefit of subsequent |
5441 | objfiles using the same BFD. */ | |
5442 | gdb_assert (per_bfd->partial_symtabs == nullptr); | |
5443 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
5444 | ||
927aa2e7 JK |
5445 | return true; |
5446 | } | |
5447 | ||
927aa2e7 JK |
5448 | /* Type used to manage iterating over all CUs looking for a symbol for |
5449 | .debug_names. */ | |
5450 | ||
5451 | class dw2_debug_names_iterator | |
5452 | { | |
5453 | public: | |
927aa2e7 | 5454 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5455 | gdb::optional<block_enum> block_index, |
5456 | domain_enum domain, | |
fcf23d5b | 5457 | const char *name, dwarf2_per_objfile *per_objfile) |
2b79f376 | 5458 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5459 | m_addr (find_vec_in_debug_names (map, name, per_objfile)), |
5460 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5461 | {} |
5462 | ||
5463 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
fcf23d5b | 5464 | search_domain search, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5465 | : m_map (map), |
5466 | m_search (search), | |
fcf23d5b SM |
5467 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5468 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5469 | {} |
5470 | ||
3b00ef10 TT |
5471 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5472 | block_enum block_index, domain_enum domain, | |
fcf23d5b | 5473 | uint32_t namei, dwarf2_per_objfile *per_objfile) |
3b00ef10 | 5474 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5475 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5476 | m_per_objfile (per_objfile) | |
3b00ef10 TT |
5477 | {} |
5478 | ||
927aa2e7 JK |
5479 | /* Return the next matching CU or NULL if there are no more. */ |
5480 | dwarf2_per_cu_data *next (); | |
5481 | ||
5482 | private: | |
5483 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
976ca316 SM |
5484 | const char *name, |
5485 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 | 5486 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, |
976ca316 SM |
5487 | uint32_t namei, |
5488 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 JK |
5489 | |
5490 | /* The internalized form of .debug_names. */ | |
5491 | const mapped_debug_names &m_map; | |
5492 | ||
2b79f376 SM |
5493 | /* If set, only look for symbols that match that block. Valid values are |
5494 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5495 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5496 | |
5497 | /* The kind of symbol we're looking for. */ | |
5498 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5499 | const search_domain m_search = ALL_DOMAIN; | |
5500 | ||
5501 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5502 | not found. */ | |
5503 | const gdb_byte *m_addr; | |
fcf23d5b SM |
5504 | |
5505 | dwarf2_per_objfile *m_per_objfile; | |
927aa2e7 JK |
5506 | }; |
5507 | ||
5508 | const char * | |
fcf23d5b | 5509 | mapped_debug_names::namei_to_name |
976ca316 | 5510 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const |
927aa2e7 JK |
5511 | { |
5512 | const ULONGEST namei_string_offs | |
5513 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5514 | + namei * offset_size), | |
5515 | offset_size, | |
5516 | dwarf5_byte_order); | |
976ca316 | 5517 | return read_indirect_string_at_offset (per_objfile, namei_string_offs); |
927aa2e7 JK |
5518 | } |
5519 | ||
5520 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5521 | found, return pointer to its pool data. If NAME cannot be found, | |
5522 | return NULL. */ | |
5523 | ||
5524 | const gdb_byte * | |
5525 | dw2_debug_names_iterator::find_vec_in_debug_names | |
976ca316 SM |
5526 | (const mapped_debug_names &map, const char *name, |
5527 | dwarf2_per_objfile *per_objfile) | |
927aa2e7 JK |
5528 | { |
5529 | int (*cmp) (const char *, const char *); | |
5530 | ||
54ee4252 | 5531 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5532 | if (current_language->la_language == language_cplus |
5533 | || current_language->la_language == language_fortran | |
5534 | || current_language->la_language == language_d) | |
5535 | { | |
5536 | /* NAME is already canonical. Drop any qualifiers as | |
5537 | .debug_names does not contain any. */ | |
5538 | ||
5539 | if (strchr (name, '(') != NULL) | |
5540 | { | |
54ee4252 | 5541 | without_params = cp_remove_params (name); |
927aa2e7 | 5542 | if (without_params != NULL) |
54ee4252 | 5543 | name = without_params.get (); |
927aa2e7 JK |
5544 | } |
5545 | } | |
5546 | ||
5547 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5548 | ||
5549 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5550 | uint32_t namei | |
5551 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5552 | (map.bucket_table_reordered | |
5553 | + (full_hash % map.bucket_count)), 4, | |
5554 | map.dwarf5_byte_order); | |
5555 | if (namei == 0) | |
5556 | return NULL; | |
5557 | --namei; | |
5558 | if (namei >= map.name_count) | |
5559 | { | |
b98664d3 | 5560 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5561 | "[in module %s]"), |
5562 | namei, map.name_count, | |
fcf23d5b | 5563 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5564 | return NULL; |
5565 | } | |
5566 | ||
5567 | for (;;) | |
5568 | { | |
5569 | const uint32_t namei_full_hash | |
5570 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5571 | (map.hash_table_reordered + namei), 4, | |
5572 | map.dwarf5_byte_order); | |
5573 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5574 | return NULL; | |
5575 | ||
5576 | if (full_hash == namei_full_hash) | |
5577 | { | |
fcf23d5b | 5578 | const char *const namei_string = map.namei_to_name (namei, per_objfile); |
927aa2e7 JK |
5579 | |
5580 | #if 0 /* An expensive sanity check. */ | |
5581 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5582 | { | |
b98664d3 | 5583 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5584 | "[in module %s]"), |
5585 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5586 | return NULL; | |
5587 | } | |
5588 | #endif | |
5589 | ||
5590 | if (cmp (namei_string, name) == 0) | |
5591 | { | |
5592 | const ULONGEST namei_entry_offs | |
5593 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5594 | + namei * map.offset_size), | |
5595 | map.offset_size, map.dwarf5_byte_order); | |
5596 | return map.entry_pool + namei_entry_offs; | |
5597 | } | |
5598 | } | |
5599 | ||
5600 | ++namei; | |
5601 | if (namei >= map.name_count) | |
5602 | return NULL; | |
5603 | } | |
5604 | } | |
5605 | ||
5606 | const gdb_byte * | |
5607 | dw2_debug_names_iterator::find_vec_in_debug_names | |
fcf23d5b | 5608 | (const mapped_debug_names &map, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5609 | { |
5610 | if (namei >= map.name_count) | |
5611 | { | |
b98664d3 | 5612 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5613 | "[in module %s]"), |
5614 | namei, map.name_count, | |
fcf23d5b | 5615 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5616 | return NULL; |
5617 | } | |
5618 | ||
5619 | const ULONGEST namei_entry_offs | |
5620 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5621 | + namei * map.offset_size), | |
5622 | map.offset_size, map.dwarf5_byte_order); | |
5623 | return map.entry_pool + namei_entry_offs; | |
5624 | } | |
5625 | ||
5626 | /* See dw2_debug_names_iterator. */ | |
5627 | ||
5628 | dwarf2_per_cu_data * | |
5629 | dw2_debug_names_iterator::next () | |
5630 | { | |
5631 | if (m_addr == NULL) | |
5632 | return NULL; | |
5633 | ||
fcf23d5b SM |
5634 | dwarf2_per_bfd *per_bfd = m_per_objfile->per_bfd; |
5635 | struct objfile *objfile = m_per_objfile->objfile; | |
ed2dc618 | 5636 | bfd *const abfd = objfile->obfd; |
927aa2e7 JK |
5637 | |
5638 | again: | |
5639 | ||
5640 | unsigned int bytes_read; | |
5641 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5642 | m_addr += bytes_read; | |
5643 | if (abbrev == 0) | |
5644 | return NULL; | |
5645 | ||
5646 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5647 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5648 | { | |
b98664d3 | 5649 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5650 | "[in module %s]"), |
ed2dc618 | 5651 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5652 | return NULL; |
5653 | } | |
5654 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5655 | enum class symbol_linkage { |
5656 | unknown, | |
5657 | static_, | |
5658 | extern_, | |
23c13d42 | 5659 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5660 | dwarf2_per_cu_data *per_cu = NULL; |
5661 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5662 | { | |
5663 | ULONGEST ull; | |
5664 | switch (attr.form) | |
5665 | { | |
5666 | case DW_FORM_implicit_const: | |
5667 | ull = attr.implicit_const; | |
5668 | break; | |
5669 | case DW_FORM_flag_present: | |
5670 | ull = 1; | |
5671 | break; | |
5672 | case DW_FORM_udata: | |
5673 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5674 | m_addr += bytes_read; | |
5675 | break; | |
6dc55ce9 | 5676 | case DW_FORM_ref4: |
5677 | ull = read_4_bytes (abfd, m_addr); | |
5678 | m_addr += 4; | |
5679 | break; | |
5680 | case DW_FORM_ref8: | |
5681 | ull = read_8_bytes (abfd, m_addr); | |
5682 | m_addr += 8; | |
5683 | break; | |
5684 | case DW_FORM_ref_sig8: | |
5685 | ull = read_8_bytes (abfd, m_addr); | |
5686 | m_addr += 8; | |
5687 | break; | |
927aa2e7 | 5688 | default: |
b98664d3 | 5689 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5690 | dwarf_form_name (attr.form), |
ed2dc618 | 5691 | objfile_name (objfile)); |
927aa2e7 JK |
5692 | return NULL; |
5693 | } | |
5694 | switch (attr.dw_idx) | |
5695 | { | |
5696 | case DW_IDX_compile_unit: | |
5697 | /* Don't crash on bad data. */ | |
fcf23d5b | 5698 | if (ull >= m_per_objfile->per_bfd->all_comp_units.size ()) |
927aa2e7 | 5699 | { |
b98664d3 | 5700 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5701 | " [in module %s]"), |
5702 | pulongest (ull), | |
fcf23d5b | 5703 | objfile_name (objfile)); |
927aa2e7 JK |
5704 | continue; |
5705 | } | |
fcf23d5b | 5706 | per_cu = per_bfd->get_cutu (ull); |
927aa2e7 | 5707 | break; |
8af5c486 JK |
5708 | case DW_IDX_type_unit: |
5709 | /* Don't crash on bad data. */ | |
fcf23d5b | 5710 | if (ull >= per_bfd->all_type_units.size ()) |
8af5c486 | 5711 | { |
b98664d3 | 5712 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5713 | " [in module %s]"), |
5714 | pulongest (ull), | |
fcf23d5b | 5715 | objfile_name (objfile)); |
8af5c486 JK |
5716 | continue; |
5717 | } | |
fcf23d5b | 5718 | per_cu = &per_bfd->get_tu (ull)->per_cu; |
8af5c486 | 5719 | break; |
6dc55ce9 | 5720 | case DW_IDX_die_offset: |
5721 | /* In a per-CU index (as opposed to a per-module index), index | |
5722 | entries without CU attribute implicitly refer to the single CU. */ | |
5723 | if (per_cu == NULL) | |
fcf23d5b | 5724 | per_cu = per_bfd->get_cu (0); |
6dc55ce9 | 5725 | break; |
927aa2e7 JK |
5726 | case DW_IDX_GNU_internal: |
5727 | if (!m_map.augmentation_is_gdb) | |
5728 | break; | |
23c13d42 | 5729 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5730 | break; |
5731 | case DW_IDX_GNU_external: | |
5732 | if (!m_map.augmentation_is_gdb) | |
5733 | break; | |
23c13d42 | 5734 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5735 | break; |
5736 | } | |
5737 | } | |
5738 | ||
5739 | /* Skip if already read in. */ | |
fcf23d5b | 5740 | if (m_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5741 | goto again; |
5742 | ||
5743 | /* Check static vs global. */ | |
23c13d42 | 5744 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5745 | { |
2b79f376 | 5746 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5747 | const bool symbol_is_static = |
5748 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5749 | if (want_static != symbol_is_static) |
2b79f376 | 5750 | goto again; |
927aa2e7 JK |
5751 | } |
5752 | ||
5753 | /* Match dw2_symtab_iter_next, symbol_kind | |
5754 | and debug_names::psymbol_tag. */ | |
5755 | switch (m_domain) | |
5756 | { | |
5757 | case VAR_DOMAIN: | |
5758 | switch (indexval.dwarf_tag) | |
5759 | { | |
5760 | case DW_TAG_variable: | |
5761 | case DW_TAG_subprogram: | |
5762 | /* Some types are also in VAR_DOMAIN. */ | |
5763 | case DW_TAG_typedef: | |
5764 | case DW_TAG_structure_type: | |
5765 | break; | |
5766 | default: | |
5767 | goto again; | |
5768 | } | |
5769 | break; | |
5770 | case STRUCT_DOMAIN: | |
5771 | switch (indexval.dwarf_tag) | |
5772 | { | |
5773 | case DW_TAG_typedef: | |
5774 | case DW_TAG_structure_type: | |
5775 | break; | |
5776 | default: | |
5777 | goto again; | |
5778 | } | |
5779 | break; | |
5780 | case LABEL_DOMAIN: | |
5781 | switch (indexval.dwarf_tag) | |
5782 | { | |
5783 | case 0: | |
5784 | case DW_TAG_variable: | |
5785 | break; | |
5786 | default: | |
5787 | goto again; | |
5788 | } | |
5789 | break; | |
59c35742 AB |
5790 | case MODULE_DOMAIN: |
5791 | switch (indexval.dwarf_tag) | |
5792 | { | |
5793 | case DW_TAG_module: | |
5794 | break; | |
5795 | default: | |
5796 | goto again; | |
5797 | } | |
5798 | break; | |
927aa2e7 JK |
5799 | default: |
5800 | break; | |
5801 | } | |
5802 | ||
5803 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5804 | debug_names::psymbol_tag. */ | |
5805 | switch (m_search) | |
4b514bc8 | 5806 | { |
927aa2e7 JK |
5807 | case VARIABLES_DOMAIN: |
5808 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5809 | { |
927aa2e7 JK |
5810 | case DW_TAG_variable: |
5811 | break; | |
5812 | default: | |
5813 | goto again; | |
4b514bc8 | 5814 | } |
927aa2e7 JK |
5815 | break; |
5816 | case FUNCTIONS_DOMAIN: | |
5817 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5818 | { |
927aa2e7 JK |
5819 | case DW_TAG_subprogram: |
5820 | break; | |
5821 | default: | |
5822 | goto again; | |
4b514bc8 | 5823 | } |
927aa2e7 JK |
5824 | break; |
5825 | case TYPES_DOMAIN: | |
5826 | switch (indexval.dwarf_tag) | |
5827 | { | |
5828 | case DW_TAG_typedef: | |
5829 | case DW_TAG_structure_type: | |
5830 | break; | |
5831 | default: | |
5832 | goto again; | |
5833 | } | |
5834 | break; | |
59c35742 AB |
5835 | case MODULES_DOMAIN: |
5836 | switch (indexval.dwarf_tag) | |
5837 | { | |
5838 | case DW_TAG_module: | |
5839 | break; | |
5840 | default: | |
5841 | goto again; | |
5842 | } | |
927aa2e7 JK |
5843 | default: |
5844 | break; | |
4b514bc8 | 5845 | } |
927aa2e7 JK |
5846 | |
5847 | return per_cu; | |
4b514bc8 | 5848 | } |
61920122 | 5849 | |
927aa2e7 | 5850 | static struct compunit_symtab * |
c7f839cb | 5851 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5852 | const char *name, domain_enum domain) |
4b514bc8 | 5853 | { |
976ca316 | 5854 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
61920122 | 5855 | |
976ca316 | 5856 | const auto &mapp = per_objfile->per_bfd->debug_names_table; |
927aa2e7 | 5857 | if (!mapp) |
61920122 | 5858 | { |
927aa2e7 JK |
5859 | /* index is NULL if OBJF_READNOW. */ |
5860 | return NULL; | |
5861 | } | |
5862 | const auto &map = *mapp; | |
9291a0cd | 5863 | |
976ca316 | 5864 | dw2_debug_names_iterator iter (map, block_index, domain, name, per_objfile); |
9703b513 | 5865 | |
927aa2e7 JK |
5866 | struct compunit_symtab *stab_best = NULL; |
5867 | struct dwarf2_per_cu_data *per_cu; | |
5868 | while ((per_cu = iter.next ()) != NULL) | |
5869 | { | |
5870 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 5871 | compunit_symtab *stab |
976ca316 | 5872 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 | 5873 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5874 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5875 | |
927aa2e7 JK |
5876 | sym = block_find_symbol (block, name, domain, |
5877 | block_find_non_opaque_type_preferred, | |
5878 | &with_opaque); | |
9703b513 | 5879 | |
927aa2e7 JK |
5880 | /* Some caution must be observed with overloaded functions and |
5881 | methods, since the index will not contain any overload | |
5882 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5883 | |
927aa2e7 | 5884 | if (sym != NULL |
987012b8 | 5885 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5886 | return stab; |
5887 | if (with_opaque != NULL | |
987012b8 | 5888 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5889 | stab_best = stab; |
9703b513 | 5890 | |
927aa2e7 | 5891 | /* Keep looking through other CUs. */ |
9703b513 TT |
5892 | } |
5893 | ||
927aa2e7 | 5894 | return stab_best; |
9703b513 TT |
5895 | } |
5896 | ||
927aa2e7 JK |
5897 | /* This dumps minimal information about .debug_names. It is called |
5898 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5899 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5900 | |
927aa2e7 JK |
5901 | static void |
5902 | dw2_debug_names_dump (struct objfile *objfile) | |
5903 | { | |
976ca316 | 5904 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 5905 | |
976ca316 | 5906 | gdb_assert (per_objfile->per_bfd->using_index); |
927aa2e7 | 5907 | printf_filtered (".debug_names:"); |
976ca316 | 5908 | if (per_objfile->per_bfd->debug_names_table) |
927aa2e7 JK |
5909 | printf_filtered (" exists\n"); |
5910 | else | |
5911 | printf_filtered (" faked for \"readnow\"\n"); | |
5912 | printf_filtered ("\n"); | |
9291a0cd TT |
5913 | } |
5914 | ||
9291a0cd | 5915 | static void |
927aa2e7 JK |
5916 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5917 | const char *func_name) | |
9291a0cd | 5918 | { |
976ca316 | 5919 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 5920 | |
976ca316 SM |
5921 | /* per_objfile->per_bfd->debug_names_table is NULL if OBJF_READNOW. */ |
5922 | if (per_objfile->per_bfd->debug_names_table) | |
24c79950 | 5923 | { |
976ca316 | 5924 | const mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
24c79950 | 5925 | |
fcf23d5b | 5926 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name, |
976ca316 | 5927 | per_objfile); |
24c79950 | 5928 | |
927aa2e7 JK |
5929 | struct dwarf2_per_cu_data *per_cu; |
5930 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5931 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 JK |
5932 | } |
5933 | } | |
24c79950 | 5934 | |
3b00ef10 TT |
5935 | static void |
5936 | dw2_debug_names_map_matching_symbols | |
5937 | (struct objfile *objfile, | |
5938 | const lookup_name_info &name, domain_enum domain, | |
5939 | int global, | |
5940 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5941 | symbol_compare_ftype *ordered_compare) | |
5942 | { | |
976ca316 | 5943 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3b00ef10 TT |
5944 | |
5945 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
976ca316 | 5946 | if (!per_objfile->per_bfd->debug_names_table) |
3b00ef10 TT |
5947 | return; |
5948 | ||
976ca316 | 5949 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
3b00ef10 TT |
5950 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
5951 | ||
5952 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5953 | auto matcher = [&] (const char *symname) | |
5954 | { | |
5955 | if (ordered_compare == nullptr) | |
5956 | return true; | |
5957 | return ordered_compare (symname, match_name) == 0; | |
5958 | }; | |
5959 | ||
5960 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5961 | [&] (offset_type namei) | |
5962 | { | |
5963 | /* The name was matched, now expand corresponding CUs that were | |
5964 | marked. */ | |
fcf23d5b | 5965 | dw2_debug_names_iterator iter (map, block_kind, domain, namei, |
976ca316 | 5966 | per_objfile); |
3b00ef10 TT |
5967 | |
5968 | struct dwarf2_per_cu_data *per_cu; | |
5969 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5970 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 5971 | nullptr); |
3b00ef10 | 5972 | return true; |
976ca316 | 5973 | }, per_objfile); |
3b00ef10 TT |
5974 | |
5975 | /* It's a shame we couldn't do this inside the | |
5976 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5977 | that have already been expanded. Instead, this loop matches what | |
5978 | the psymtab code does. */ | |
976ca316 | 5979 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3b00ef10 | 5980 | { |
976ca316 | 5981 | compunit_symtab *symtab = per_objfile->get_symtab (per_cu); |
af758d11 | 5982 | if (symtab != nullptr) |
3b00ef10 TT |
5983 | { |
5984 | const struct block *block | |
af758d11 | 5985 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (symtab), block_kind); |
3b00ef10 TT |
5986 | if (!iterate_over_symbols_terminated (block, name, |
5987 | domain, callback)) | |
5988 | break; | |
5989 | } | |
5990 | } | |
5991 | } | |
5992 | ||
927aa2e7 JK |
5993 | static void |
5994 | dw2_debug_names_expand_symtabs_matching | |
5995 | (struct objfile *objfile, | |
5996 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 5997 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
5998 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
5999 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
6000 | enum search_domain kind) | |
6001 | { | |
976ca316 | 6002 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 6003 | |
927aa2e7 | 6004 | /* debug_names_table is NULL if OBJF_READNOW. */ |
976ca316 | 6005 | if (!per_objfile->per_bfd->debug_names_table) |
927aa2e7 | 6006 | return; |
9291a0cd | 6007 | |
976ca316 | 6008 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
24c79950 | 6009 | |
c1a66c06 TV |
6010 | if (symbol_matcher == NULL && lookup_name == NULL) |
6011 | { | |
976ca316 | 6012 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
6013 | { |
6014 | QUIT; | |
6015 | ||
976ca316 SM |
6016 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
6017 | expansion_notify); | |
c1a66c06 TV |
6018 | } |
6019 | return; | |
6020 | } | |
6021 | ||
976ca316 | 6022 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
bbf2f4df | 6023 | |
c1a66c06 | 6024 | dw2_expand_symtabs_matching_symbol (map, *lookup_name, |
44ed8f3e PA |
6025 | symbol_matcher, |
6026 | kind, [&] (offset_type namei) | |
927aa2e7 | 6027 | { |
927aa2e7 JK |
6028 | /* The name was matched, now expand corresponding CUs that were |
6029 | marked. */ | |
976ca316 | 6030 | dw2_debug_names_iterator iter (map, kind, namei, per_objfile); |
bbf2f4df | 6031 | |
927aa2e7 JK |
6032 | struct dwarf2_per_cu_data *per_cu; |
6033 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 SM |
6034 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
6035 | expansion_notify); | |
3b00ef10 | 6036 | return true; |
976ca316 | 6037 | }, per_objfile); |
9291a0cd TT |
6038 | } |
6039 | ||
927aa2e7 | 6040 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
6041 | { |
6042 | dw2_has_symbols, | |
6043 | dw2_find_last_source_symtab, | |
6044 | dw2_forget_cached_source_info, | |
f8eba3c6 | 6045 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 6046 | dw2_debug_names_lookup_symbol, |
d3214198 | 6047 | NULL, |
9291a0cd | 6048 | dw2_print_stats, |
927aa2e7 | 6049 | dw2_debug_names_dump, |
927aa2e7 | 6050 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 6051 | dw2_expand_all_symtabs, |
652a8996 | 6052 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 6053 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 6054 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 6055 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 6056 | NULL, |
9291a0cd TT |
6057 | dw2_map_symbol_filenames |
6058 | }; | |
6059 | ||
4485a1c1 | 6060 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5989a64e | 6061 | to either a dwarf2_per_bfd or dwz_file object. */ |
4485a1c1 SM |
6062 | |
6063 | template <typename T> | |
6064 | static gdb::array_view<const gdb_byte> | |
6065 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
6066 | { | |
6067 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
6068 | ||
96b79293 | 6069 | if (section->empty ()) |
4485a1c1 SM |
6070 | return {}; |
6071 | ||
6072 | /* Older elfutils strip versions could keep the section in the main | |
6073 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 6074 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
6075 | return {}; |
6076 | ||
96b79293 | 6077 | section->read (obj); |
4485a1c1 | 6078 | |
8bebfcda PA |
6079 | /* dwarf2_section_info::size is a bfd_size_type, while |
6080 | gdb::array_view works with size_t. On 32-bit hosts, with | |
6081 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
6082 | is 32-bit. So we need an explicit narrowing conversion here. | |
6083 | This is fine, because it's impossible to allocate or mmap an | |
6084 | array/buffer larger than what size_t can represent. */ | |
6085 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
6086 | } |
6087 | ||
87d6a7aa SM |
6088 | /* Lookup the index cache for the contents of the index associated to |
6089 | DWARF2_OBJ. */ | |
6090 | ||
6091 | static gdb::array_view<const gdb_byte> | |
5989a64e | 6092 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd) |
87d6a7aa SM |
6093 | { |
6094 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
6095 | if (build_id == nullptr) | |
6096 | return {}; | |
6097 | ||
6098 | return global_index_cache.lookup_gdb_index (build_id, | |
5989a64e | 6099 | &dwarf2_per_bfd->index_cache_res); |
87d6a7aa SM |
6100 | } |
6101 | ||
6102 | /* Same as the above, but for DWZ. */ | |
6103 | ||
6104 | static gdb::array_view<const gdb_byte> | |
6105 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
6106 | { | |
6107 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
6108 | if (build_id == nullptr) | |
6109 | return {}; | |
6110 | ||
6111 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
6112 | } | |
6113 | ||
3c0aa29a | 6114 | /* See symfile.h. */ |
9291a0cd | 6115 | |
3c0aa29a PA |
6116 | bool |
6117 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6118 | { |
976ca316 SM |
6119 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6120 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
ed2dc618 | 6121 | |
9291a0cd TT |
6122 | /* If we're about to read full symbols, don't bother with the |
6123 | indices. In this case we also don't care if some other debug | |
6124 | format is making psymtabs, because they are all about to be | |
6125 | expanded anyway. */ | |
6126 | if ((objfile->flags & OBJF_READNOW)) | |
6127 | { | |
17ee85fc TT |
6128 | /* When using READNOW, the using_index flag (set below) indicates that |
6129 | PER_BFD was already initialized, when we loaded some other objfile. */ | |
6130 | if (per_bfd->using_index) | |
6131 | { | |
6132 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6133 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6134 | return true; |
6135 | } | |
6136 | ||
6137 | per_bfd->using_index = 1; | |
976ca316 SM |
6138 | create_all_comp_units (per_objfile); |
6139 | create_all_type_units (per_objfile); | |
17ee85fc TT |
6140 | per_bfd->quick_file_names_table |
6141 | = create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
976ca316 | 6142 | per_objfile->resize_symtabs (); |
9291a0cd | 6143 | |
17ee85fc TT |
6144 | for (int i = 0; i < (per_bfd->all_comp_units.size () |
6145 | + per_bfd->all_type_units.size ()); ++i) | |
9291a0cd | 6146 | { |
17ee85fc | 6147 | dwarf2_per_cu_data *per_cu = per_bfd->get_cutu (i); |
9291a0cd | 6148 | |
17ee85fc | 6149 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
e254ef6a | 6150 | struct dwarf2_per_cu_quick_data); |
9291a0cd TT |
6151 | } |
6152 | ||
6153 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6154 | these functions will be no-ops because we will have expanded | |
6155 | all symtabs. */ | |
3c0aa29a PA |
6156 | *index_kind = dw_index_kind::GDB_INDEX; |
6157 | return true; | |
9291a0cd TT |
6158 | } |
6159 | ||
17ee85fc TT |
6160 | /* Was a debug names index already read when we processed an objfile sharing |
6161 | PER_BFD? */ | |
6162 | if (per_bfd->debug_names_table != nullptr) | |
6163 | { | |
6164 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
f8c41851 | 6165 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 6166 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6167 | return true; |
6168 | } | |
6169 | ||
6170 | /* Was a GDB index already read when we processed an objfile sharing | |
6171 | PER_BFD? */ | |
6172 | if (per_bfd->index_table != nullptr) | |
6173 | { | |
6174 | *index_kind = dw_index_kind::GDB_INDEX; | |
f8c41851 | 6175 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 6176 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6177 | return true; |
6178 | } | |
6179 | ||
efb763a5 SM |
6180 | /* There might already be partial symtabs built for this BFD. This happens |
6181 | when loading the same binary twice with the index-cache enabled. If so, | |
6182 | don't try to read an index. The objfile / per_objfile initialization will | |
6183 | be completed in dwarf2_build_psymtabs, in the standard partial symtabs | |
6184 | code path. */ | |
6185 | if (per_bfd->partial_symtabs != nullptr) | |
6186 | return false; | |
6187 | ||
976ca316 | 6188 | if (dwarf2_read_debug_names (per_objfile)) |
3c0aa29a PA |
6189 | { |
6190 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
976ca316 | 6191 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6192 | return true; |
6193 | } | |
927aa2e7 | 6194 | |
976ca316 | 6195 | if (dwarf2_read_gdb_index (per_objfile, |
5989a64e | 6196 | get_gdb_index_contents_from_section<struct dwarf2_per_bfd>, |
4485a1c1 | 6197 | get_gdb_index_contents_from_section<dwz_file>)) |
3c0aa29a PA |
6198 | { |
6199 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6200 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6201 | return true; |
6202 | } | |
9291a0cd | 6203 | |
87d6a7aa | 6204 | /* ... otherwise, try to find the index in the index cache. */ |
976ca316 | 6205 | if (dwarf2_read_gdb_index (per_objfile, |
87d6a7aa SM |
6206 | get_gdb_index_contents_from_cache, |
6207 | get_gdb_index_contents_from_cache_dwz)) | |
6208 | { | |
6209 | global_index_cache.hit (); | |
6210 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6211 | per_objfile->resize_symtabs (); |
87d6a7aa SM |
6212 | return true; |
6213 | } | |
6214 | ||
6215 | global_index_cache.miss (); | |
3c0aa29a | 6216 | return false; |
9291a0cd TT |
6217 | } |
6218 | ||
6219 | \f | |
6220 | ||
dce234bc PP |
6221 | /* Build a partial symbol table. */ |
6222 | ||
6223 | void | |
f29dff0a | 6224 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6225 | { |
976ca316 SM |
6226 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6227 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
17ee85fc TT |
6228 | |
6229 | if (per_bfd->partial_symtabs != nullptr) | |
6230 | { | |
6231 | /* Partial symbols were already read, so now we can simply | |
6232 | attach them. */ | |
6233 | objfile->partial_symtabs = per_bfd->partial_symtabs; | |
976ca316 | 6234 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6235 | return; |
6236 | } | |
c9bf0622 | 6237 | |
a70b8144 | 6238 | try |
c9bf0622 TT |
6239 | { |
6240 | /* This isn't really ideal: all the data we allocate on the | |
6241 | objfile's obstack is still uselessly kept around. However, | |
6242 | freeing it seems unsafe. */ | |
906768f9 | 6243 | psymtab_discarder psymtabs (objfile); |
976ca316 | 6244 | dwarf2_build_psymtabs_hard (per_objfile); |
906768f9 | 6245 | psymtabs.keep (); |
87d6a7aa | 6246 | |
976ca316 | 6247 | per_objfile->resize_symtabs (); |
af758d11 | 6248 | |
87d6a7aa | 6249 | /* (maybe) store an index in the cache. */ |
976ca316 | 6250 | global_index_cache.store (per_objfile); |
c9bf0622 | 6251 | } |
230d2906 | 6252 | catch (const gdb_exception_error &except) |
492d29ea PA |
6253 | { |
6254 | exception_print (gdb_stderr, except); | |
6255 | } | |
17ee85fc TT |
6256 | |
6257 | /* Finish by setting the local reference to partial symtabs, so that | |
6258 | we don't try to read them again if reading another objfile with the same | |
6259 | BFD. If we can't in fact share, this won't make a difference anyway as | |
6260 | the dwarf2_per_bfd object won't be shared. */ | |
6261 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
c906108c | 6262 | } |
c906108c | 6263 | |
3b80fe9b DE |
6264 | /* Find the base address of the compilation unit for range lists and |
6265 | location lists. It will normally be specified by DW_AT_low_pc. | |
6266 | In DWARF-3 draft 4, the base address could be overridden by | |
6267 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6268 | compilation units with discontinuous ranges. */ | |
6269 | ||
6270 | static void | |
6271 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6272 | { | |
6273 | struct attribute *attr; | |
6274 | ||
2b24b6e4 | 6275 | cu->base_address.reset (); |
3b80fe9b DE |
6276 | |
6277 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6278 | if (attr != nullptr) |
95f982e5 | 6279 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
6280 | else |
6281 | { | |
6282 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6283 | if (attr != nullptr) |
95f982e5 | 6284 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
6285 | } |
6286 | } | |
6287 | ||
36586728 TT |
6288 | /* Helper function that returns the proper abbrev section for |
6289 | THIS_CU. */ | |
6290 | ||
6291 | static struct dwarf2_section_info * | |
6292 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6293 | { | |
6294 | struct dwarf2_section_info *abbrev; | |
c3699833 | 6295 | dwarf2_per_bfd *per_bfd = this_cu->per_bfd; |
36586728 TT |
6296 | |
6297 | if (this_cu->is_dwz) | |
c3699833 | 6298 | abbrev = &dwarf2_get_dwz_file (per_bfd)->abbrev; |
36586728 | 6299 | else |
c3699833 | 6300 | abbrev = &per_bfd->abbrev; |
36586728 TT |
6301 | |
6302 | return abbrev; | |
6303 | } | |
6304 | ||
f4dc4d17 DE |
6305 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6306 | ||
6307 | static sect_offset | |
976ca316 | 6308 | read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6309 | struct dwarf2_section_info *section, |
9c541725 | 6310 | sect_offset sect_off) |
f4dc4d17 | 6311 | { |
96b79293 | 6312 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 6313 | const gdb_byte *info_ptr; |
ac298888 | 6314 | unsigned int initial_length_size, offset_size; |
43988095 | 6315 | uint16_t version; |
f4dc4d17 | 6316 | |
976ca316 | 6317 | section->read (per_objfile->objfile); |
9c541725 | 6318 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6319 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6320 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6321 | info_ptr += initial_length_size; |
6322 | ||
6323 | version = read_2_bytes (abfd, info_ptr); | |
6324 | info_ptr += 2; | |
6325 | if (version >= 5) | |
6326 | { | |
6327 | /* Skip unit type and address size. */ | |
6328 | info_ptr += 2; | |
6329 | } | |
6330 | ||
24aa364d | 6331 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6332 | } |
6333 | ||
b83470bf TT |
6334 | /* A partial symtab that is used only for include files. */ |
6335 | struct dwarf2_include_psymtab : public partial_symtab | |
6336 | { | |
6337 | dwarf2_include_psymtab (const char *filename, struct objfile *objfile) | |
6338 | : partial_symtab (filename, objfile) | |
6339 | { | |
6340 | } | |
6341 | ||
6342 | void read_symtab (struct objfile *objfile) override | |
6343 | { | |
194d088f TV |
6344 | /* It's an include file, no symbols to read for it. |
6345 | Everything is in the includer symtab. */ | |
6346 | ||
6347 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
6348 | expansion of the includer psymtab. We use the dependencies[0] field to | |
6349 | model the includer. But if we go the regular route of calling | |
6350 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
6351 | to expand the includer, we'll only use expand_psymtab on the includer | |
6352 | (making it a non-toplevel psymtab), while if we expand the includer via | |
6353 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
6354 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
6355 | psymtab, and trigger read_symtab on the includer here directly. */ | |
6356 | includer ()->read_symtab (objfile); | |
b83470bf TT |
6357 | } |
6358 | ||
6359 | void expand_psymtab (struct objfile *objfile) override | |
6360 | { | |
194d088f TV |
6361 | /* This is not called by read_symtab, and should not be called by any |
6362 | expand_dependencies. */ | |
6363 | gdb_assert (false); | |
b83470bf TT |
6364 | } |
6365 | ||
5717c425 | 6366 | bool readin_p (struct objfile *objfile) const override |
b83470bf | 6367 | { |
5717c425 | 6368 | return includer ()->readin_p (objfile); |
b83470bf TT |
6369 | } |
6370 | ||
5717c425 | 6371 | compunit_symtab *get_compunit_symtab (struct objfile *objfile) const override |
b83470bf TT |
6372 | { |
6373 | return nullptr; | |
6374 | } | |
6375 | ||
6376 | private: | |
194d088f TV |
6377 | partial_symtab *includer () const |
6378 | { | |
6379 | /* An include psymtab has exactly one dependency: the psymtab that | |
6380 | includes it. */ | |
6381 | gdb_assert (this->number_of_dependencies == 1); | |
6382 | return this->dependencies[0]; | |
6383 | } | |
b83470bf TT |
6384 | }; |
6385 | ||
aaa75496 JB |
6386 | /* Allocate a new partial symtab for file named NAME and mark this new |
6387 | partial symtab as being an include of PST. */ | |
6388 | ||
6389 | static void | |
891813be | 6390 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
dda83cd7 | 6391 | struct objfile *objfile) |
aaa75496 | 6392 | { |
b83470bf | 6393 | dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile); |
aaa75496 | 6394 | |
fbd9ab74 | 6395 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
45940949 | 6396 | subpst->dirname = pst->dirname; |
fbd9ab74 | 6397 | |
a9342b62 | 6398 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6399 | subpst->dependencies[0] = pst; |
6400 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
6401 | } |
6402 | ||
6403 | /* Read the Line Number Program data and extract the list of files | |
6404 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6405 | partial symtab for each of these included files. */ |
aaa75496 JB |
6406 | |
6407 | static void | |
6408 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6409 | struct die_info *die, |
891813be | 6410 | dwarf2_psymtab *pst) |
aaa75496 | 6411 | { |
fff8551c | 6412 | line_header_up lh; |
d85a05f0 | 6413 | struct attribute *attr; |
aaa75496 | 6414 | |
d85a05f0 | 6415 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e TT |
6416 | if (attr != nullptr && attr->form_is_unsigned ()) |
6417 | lh = dwarf_decode_line_header ((sect_offset) attr->as_unsigned (), cu); | |
aaa75496 JB |
6418 | if (lh == NULL) |
6419 | return; /* No linetable, so no includes. */ | |
6420 | ||
79748972 TT |
6421 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6422 | that we pass in the raw text_low here; that is ok because we're | |
6423 | only decoding the line table to make include partial symtabs, and | |
6424 | so the addresses aren't really used. */ | |
4ae976d1 | 6425 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6426 | pst->raw_text_low (), 1); |
aaa75496 JB |
6427 | } |
6428 | ||
348e048f | 6429 | static hashval_t |
52dc124a | 6430 | hash_signatured_type (const void *item) |
348e048f | 6431 | { |
9a3c8263 SM |
6432 | const struct signatured_type *sig_type |
6433 | = (const struct signatured_type *) item; | |
9a619af0 | 6434 | |
348e048f | 6435 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6436 | return sig_type->signature; |
348e048f DE |
6437 | } |
6438 | ||
6439 | static int | |
52dc124a | 6440 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6441 | { |
9a3c8263 SM |
6442 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6443 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6444 | |
348e048f DE |
6445 | return lhs->signature == rhs->signature; |
6446 | } | |
6447 | ||
1fd400ff TT |
6448 | /* Allocate a hash table for signatured types. */ |
6449 | ||
b0b6a987 | 6450 | static htab_up |
298e9637 | 6451 | allocate_signatured_type_table () |
1fd400ff | 6452 | { |
b0b6a987 TT |
6453 | return htab_up (htab_create_alloc (41, |
6454 | hash_signatured_type, | |
6455 | eq_signatured_type, | |
6456 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6457 | } |
6458 | ||
d467dd73 | 6459 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6460 | |
6461 | static int | |
d467dd73 | 6462 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6463 | { |
9a3c8263 | 6464 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6465 | std::vector<signatured_type *> *all_type_units |
6466 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6467 | |
b2bdb8cf | 6468 | all_type_units->push_back (sigt); |
1fd400ff TT |
6469 | |
6470 | return 1; | |
6471 | } | |
6472 | ||
78d4d2c5 | 6473 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6474 | and fill them into TYPES_HTAB. It will process only type units, |
6475 | therefore DW_UT_type. */ | |
c88ee1f0 | 6476 | |
78d4d2c5 | 6477 | static void |
976ca316 | 6478 | create_debug_type_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6479 | struct dwo_file *dwo_file, |
b0b6a987 | 6480 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6481 | rcuh_kind section_kind) |
348e048f | 6482 | { |
976ca316 | 6483 | struct objfile *objfile = per_objfile->objfile; |
4bdcc0c1 | 6484 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6485 | bfd *abfd; |
6486 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6487 | |
4bdcc0c1 DE |
6488 | abbrev_section = (dwo_file != NULL |
6489 | ? &dwo_file->sections.abbrev | |
976ca316 | 6490 | : &per_objfile->per_bfd->abbrev); |
4bdcc0c1 | 6491 | |
6f738b01 SM |
6492 | dwarf_read_debug_printf ("Reading %s for %s:", |
6493 | section->get_name (), | |
6494 | abbrev_section->get_file_name ()); | |
09406207 | 6495 | |
96b79293 | 6496 | section->read (objfile); |
78d4d2c5 | 6497 | info_ptr = section->buffer; |
348e048f | 6498 | |
78d4d2c5 JK |
6499 | if (info_ptr == NULL) |
6500 | return; | |
348e048f | 6501 | |
78d4d2c5 JK |
6502 | /* We can't set abfd until now because the section may be empty or |
6503 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6504 | abfd = section->get_bfd_owner (); |
348e048f | 6505 | |
c0ab21c2 TT |
6506 | /* We don't use cutu_reader here because we don't need to read |
6507 | any dies: the signature is in the header. */ | |
3019eac3 | 6508 | |
78d4d2c5 JK |
6509 | end_ptr = info_ptr + section->size; |
6510 | while (info_ptr < end_ptr) | |
6511 | { | |
78d4d2c5 JK |
6512 | struct signatured_type *sig_type; |
6513 | struct dwo_unit *dwo_tu; | |
6514 | void **slot; | |
6515 | const gdb_byte *ptr = info_ptr; | |
6516 | struct comp_unit_head header; | |
6517 | unsigned int length; | |
8b70b953 | 6518 | |
9c541725 | 6519 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6520 | |
a49dd8dd JK |
6521 | /* Initialize it due to a false compiler warning. */ |
6522 | header.signature = -1; | |
9c541725 | 6523 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6524 | |
78d4d2c5 JK |
6525 | /* We need to read the type's signature in order to build the hash |
6526 | table, but we don't need anything else just yet. */ | |
348e048f | 6527 | |
976ca316 | 6528 | ptr = read_and_check_comp_unit_head (per_objfile, &header, section, |
43988095 | 6529 | abbrev_section, ptr, section_kind); |
348e048f | 6530 | |
4057dfde | 6531 | length = header.get_length (); |
6caca83c | 6532 | |
78d4d2c5 JK |
6533 | /* Skip dummy type units. */ |
6534 | if (ptr >= info_ptr + length | |
43988095 | 6535 | || peek_abbrev_code (abfd, ptr) == 0 |
d2854d8d CT |
6536 | || (header.unit_type != DW_UT_type |
6537 | && header.unit_type != DW_UT_split_type)) | |
78d4d2c5 JK |
6538 | { |
6539 | info_ptr += length; | |
6540 | continue; | |
6541 | } | |
dee91e82 | 6542 | |
78d4d2c5 JK |
6543 | if (types_htab == NULL) |
6544 | { | |
6545 | if (dwo_file) | |
298e9637 | 6546 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6547 | else |
298e9637 | 6548 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6549 | } |
8b70b953 | 6550 | |
78d4d2c5 JK |
6551 | if (dwo_file) |
6552 | { | |
6553 | sig_type = NULL; | |
976ca316 | 6554 | dwo_tu = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, dwo_unit); |
78d4d2c5 | 6555 | dwo_tu->dwo_file = dwo_file; |
43988095 | 6556 | dwo_tu->signature = header.signature; |
9c541725 | 6557 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6558 | dwo_tu->section = section; |
9c541725 | 6559 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6560 | dwo_tu->length = length; |
6561 | } | |
6562 | else | |
6563 | { | |
6564 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6565 | The real type_offset is in the DWO file. */ | |
6566 | dwo_tu = NULL; | |
976ca316 | 6567 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
43988095 | 6568 | sig_type->signature = header.signature; |
9c541725 | 6569 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 JK |
6570 | sig_type->per_cu.is_debug_types = 1; |
6571 | sig_type->per_cu.section = section; | |
9c541725 | 6572 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6573 | sig_type->per_cu.length = length; |
6574 | } | |
6575 | ||
b0b6a987 | 6576 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6577 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6578 | INSERT); | |
6579 | gdb_assert (slot != NULL); | |
6580 | if (*slot != NULL) | |
6581 | { | |
9c541725 | 6582 | sect_offset dup_sect_off; |
0349ea22 | 6583 | |
3019eac3 DE |
6584 | if (dwo_file) |
6585 | { | |
78d4d2c5 JK |
6586 | const struct dwo_unit *dup_tu |
6587 | = (const struct dwo_unit *) *slot; | |
6588 | ||
9c541725 | 6589 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6590 | } |
6591 | else | |
6592 | { | |
78d4d2c5 JK |
6593 | const struct signatured_type *dup_tu |
6594 | = (const struct signatured_type *) *slot; | |
6595 | ||
9c541725 | 6596 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6597 | } |
8b70b953 | 6598 | |
b98664d3 | 6599 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6600 | " the entry at offset %s, signature %s"), |
6601 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6602 | hex_string (header.signature)); |
78d4d2c5 JK |
6603 | } |
6604 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6605 | |
6f738b01 SM |
6606 | dwarf_read_debug_printf_v (" offset %s, signature %s", |
6607 | sect_offset_str (sect_off), | |
6608 | hex_string (header.signature)); | |
3019eac3 | 6609 | |
78d4d2c5 JK |
6610 | info_ptr += length; |
6611 | } | |
6612 | } | |
3019eac3 | 6613 | |
78d4d2c5 JK |
6614 | /* Create the hash table of all entries in the .debug_types |
6615 | (or .debug_types.dwo) section(s). | |
6616 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6617 | otherwise it is NULL. | |
b3c8eb43 | 6618 | |
78d4d2c5 | 6619 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6620 | |
78d4d2c5 | 6621 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6622 | |
78d4d2c5 | 6623 | static void |
976ca316 | 6624 | create_debug_types_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6625 | struct dwo_file *dwo_file, |
fd5866f6 | 6626 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6627 | htab_up &types_htab) |
78d4d2c5 | 6628 | { |
fd5866f6 | 6629 | for (dwarf2_section_info §ion : type_sections) |
976ca316 SM |
6630 | create_debug_type_hash_table (per_objfile, dwo_file, §ion, types_htab, |
6631 | rcuh_kind::TYPE); | |
3019eac3 DE |
6632 | } |
6633 | ||
6634 | /* Create the hash table of all entries in the .debug_types section, | |
6635 | and initialize all_type_units. | |
6636 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6637 | otherwise non-zero. */ | |
6638 | ||
6639 | static int | |
976ca316 | 6640 | create_all_type_units (dwarf2_per_objfile *per_objfile) |
3019eac3 | 6641 | { |
b0b6a987 | 6642 | htab_up types_htab; |
3019eac3 | 6643 | |
976ca316 SM |
6644 | create_debug_type_hash_table (per_objfile, NULL, &per_objfile->per_bfd->info, |
6645 | types_htab, rcuh_kind::COMPILE); | |
6646 | create_debug_types_hash_table (per_objfile, NULL, per_objfile->per_bfd->types, | |
6647 | types_htab); | |
3019eac3 DE |
6648 | if (types_htab == NULL) |
6649 | { | |
976ca316 | 6650 | per_objfile->per_bfd->signatured_types = NULL; |
3019eac3 DE |
6651 | return 0; |
6652 | } | |
6653 | ||
976ca316 | 6654 | per_objfile->per_bfd->signatured_types = std::move (types_htab); |
348e048f | 6655 | |
976ca316 SM |
6656 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
6657 | per_objfile->per_bfd->all_type_units.reserve | |
6658 | (htab_elements (per_objfile->per_bfd->signatured_types.get ())); | |
b2bdb8cf | 6659 | |
976ca316 | 6660 | htab_traverse_noresize (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6661 | add_signatured_type_cu_to_table, |
976ca316 | 6662 | &per_objfile->per_bfd->all_type_units); |
1fd400ff | 6663 | |
348e048f DE |
6664 | return 1; |
6665 | } | |
6666 | ||
5989a64e | 6667 | /* Add an entry for signature SIG to dwarf2_per_objfile->per_bfd->signatured_types. |
6aa5f3a6 DE |
6668 | If SLOT is non-NULL, it is the entry to use in the hash table. |
6669 | Otherwise we find one. */ | |
6670 | ||
6671 | static struct signatured_type * | |
976ca316 | 6672 | add_type_unit (dwarf2_per_objfile *per_objfile, ULONGEST sig, void **slot) |
6aa5f3a6 | 6673 | { |
976ca316 SM |
6674 | if (per_objfile->per_bfd->all_type_units.size () |
6675 | == per_objfile->per_bfd->all_type_units.capacity ()) | |
6676 | ++per_objfile->per_bfd->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6677 | |
976ca316 | 6678 | signatured_type *sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
b2bdb8cf | 6679 | |
976ca316 | 6680 | per_objfile->resize_symtabs (); |
af758d11 | 6681 | |
976ca316 | 6682 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
6aa5f3a6 DE |
6683 | sig_type->signature = sig; |
6684 | sig_type->per_cu.is_debug_types = 1; | |
976ca316 | 6685 | if (per_objfile->per_bfd->using_index) |
6aa5f3a6 DE |
6686 | { |
6687 | sig_type->per_cu.v.quick = | |
976ca316 | 6688 | OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
6aa5f3a6 DE |
6689 | struct dwarf2_per_cu_quick_data); |
6690 | } | |
6691 | ||
6692 | if (slot == NULL) | |
6693 | { | |
976ca316 | 6694 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 DE |
6695 | sig_type, INSERT); |
6696 | } | |
6697 | gdb_assert (*slot == NULL); | |
6698 | *slot = sig_type; | |
6699 | /* The rest of sig_type must be filled in by the caller. */ | |
6700 | return sig_type; | |
6701 | } | |
6702 | ||
a2ce51a0 DE |
6703 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6704 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6705 | ||
6706 | static void | |
976ca316 | 6707 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile *per_objfile, |
a2ce51a0 DE |
6708 | struct signatured_type *sig_entry, |
6709 | struct dwo_unit *dwo_entry) | |
6710 | { | |
976ca316 | 6711 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
1859c670 | 6712 | |
7ee85ab1 | 6713 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 | 6714 | gdb_assert (! sig_entry->per_cu.queued); |
976ca316 | 6715 | gdb_assert (per_objfile->get_cu (&sig_entry->per_cu) == NULL); |
1859c670 | 6716 | if (per_bfd->using_index) |
6aa5f3a6 DE |
6717 | { |
6718 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
976ca316 | 6719 | gdb_assert (!per_objfile->symtab_set_p (&sig_entry->per_cu)); |
6aa5f3a6 DE |
6720 | } |
6721 | else | |
6722 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6723 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6724 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6725 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6726 | gdb_assert (sig_entry->dwo_unit == NULL); |
6727 | ||
6728 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6729 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6730 | sig_entry->per_cu.length = dwo_entry->length; |
6731 | sig_entry->per_cu.reading_dwo_directly = 1; | |
1859c670 | 6732 | sig_entry->per_cu.per_bfd = per_bfd; |
a2ce51a0 DE |
6733 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6734 | sig_entry->dwo_unit = dwo_entry; | |
6735 | } | |
6736 | ||
6737 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6738 | If we haven't read the TU yet, create the signatured_type data structure |
6739 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6740 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6741 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6742 | containing that CU. Otherwise we could end up reading several other DWO | |
6743 | files (due to comdat folding) to process the transitive closure of all the | |
6744 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6745 | type signature that it needs. | |
a2ce51a0 DE |
6746 | We only do this for .gdb_index because in the psymtab case we already have |
6747 | to read all the DWOs to build the type unit groups. */ | |
6748 | ||
6749 | static struct signatured_type * | |
6750 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6751 | { | |
976ca316 | 6752 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a2ce51a0 DE |
6753 | struct dwo_file *dwo_file; |
6754 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6755 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6756 | void **slot; |
a2ce51a0 | 6757 | |
976ca316 | 6758 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 | 6759 | |
6aa5f3a6 DE |
6760 | /* If TU skeletons have been removed then we may not have read in any |
6761 | TUs yet. */ | |
976ca316 SM |
6762 | if (per_objfile->per_bfd->signatured_types == NULL) |
6763 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 DE |
6764 | |
6765 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6766 | Use the global signatured_types array to do our own comdat-folding |
6767 | of types. If this is the first time we're reading this TU, and | |
6768 | the TU has an entry in .gdb_index, replace the recorded data from | |
6769 | .gdb_index with this TU. */ | |
a2ce51a0 | 6770 | |
a2ce51a0 | 6771 | find_sig_entry.signature = sig; |
976ca316 | 6772 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6773 | &find_sig_entry, INSERT); |
9a3c8263 | 6774 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6775 | |
6776 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6777 | read. Don't reassign the global entry to point to this DWO if that's |
6778 | the case. Also note that if the TU is already being read, it may not | |
6779 | have come from a DWO, the program may be a mix of Fission-compiled | |
6780 | code and non-Fission-compiled code. */ | |
6781 | ||
6782 | /* Have we already tried to read this TU? | |
6783 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6784 | needn't exist in the global table yet). */ | |
6785 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6786 | return sig_entry; |
6787 | ||
6aa5f3a6 DE |
6788 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6789 | dwo_unit of the TU itself. */ | |
6790 | dwo_file = cu->dwo_unit->dwo_file; | |
6791 | ||
a2ce51a0 DE |
6792 | /* Ok, this is the first time we're reading this TU. */ |
6793 | if (dwo_file->tus == NULL) | |
6794 | return NULL; | |
6795 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6796 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6797 | &find_dwo_entry); | |
a2ce51a0 DE |
6798 | if (dwo_entry == NULL) |
6799 | return NULL; | |
6800 | ||
6aa5f3a6 DE |
6801 | /* If the global table doesn't have an entry for this TU, add one. */ |
6802 | if (sig_entry == NULL) | |
976ca316 | 6803 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6aa5f3a6 | 6804 | |
976ca316 | 6805 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6806 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6807 | return sig_entry; |
6808 | } | |
6809 | ||
a2ce51a0 DE |
6810 | /* Subroutine of lookup_signatured_type. |
6811 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6812 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6813 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6814 | |
6815 | static struct signatured_type * | |
6816 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6817 | { | |
976ca316 SM |
6818 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
6819 | struct dwp_file *dwp_file = get_dwp_file (per_objfile); | |
a2ce51a0 DE |
6820 | struct dwo_unit *dwo_entry; |
6821 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6822 | void **slot; |
a2ce51a0 | 6823 | |
976ca316 | 6824 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 DE |
6825 | gdb_assert (dwp_file != NULL); |
6826 | ||
6aa5f3a6 DE |
6827 | /* If TU skeletons have been removed then we may not have read in any |
6828 | TUs yet. */ | |
976ca316 SM |
6829 | if (per_objfile->per_bfd->signatured_types == NULL) |
6830 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 | 6831 | |
6aa5f3a6 | 6832 | find_sig_entry.signature = sig; |
976ca316 | 6833 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6834 | &find_sig_entry, INSERT); |
9a3c8263 | 6835 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6836 | |
6837 | /* Have we already tried to read this TU? | |
6838 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6839 | needn't exist in the global table yet). */ | |
6840 | if (sig_entry != NULL) | |
6841 | return sig_entry; | |
6842 | ||
a2ce51a0 DE |
6843 | if (dwp_file->tus == NULL) |
6844 | return NULL; | |
976ca316 SM |
6845 | dwo_entry = lookup_dwo_unit_in_dwp (per_objfile, dwp_file, NULL, sig, |
6846 | 1 /* is_debug_types */); | |
a2ce51a0 DE |
6847 | if (dwo_entry == NULL) |
6848 | return NULL; | |
6849 | ||
976ca316 SM |
6850 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6851 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6852 | |
a2ce51a0 DE |
6853 | return sig_entry; |
6854 | } | |
6855 | ||
380bca97 | 6856 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6857 | Returns NULL if signature SIG is not present in the table. |
6858 | It is up to the caller to complain about this. */ | |
348e048f DE |
6859 | |
6860 | static struct signatured_type * | |
a2ce51a0 | 6861 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6862 | { |
976ca316 | 6863 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 6864 | |
976ca316 | 6865 | if (cu->dwo_unit && per_objfile->per_bfd->using_index) |
a2ce51a0 DE |
6866 | { |
6867 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6868 | These cases require special processing. */ | |
976ca316 | 6869 | if (get_dwp_file (per_objfile) == NULL) |
a2ce51a0 DE |
6870 | return lookup_dwo_signatured_type (cu, sig); |
6871 | else | |
6872 | return lookup_dwp_signatured_type (cu, sig); | |
6873 | } | |
6874 | else | |
6875 | { | |
6876 | struct signatured_type find_entry, *entry; | |
348e048f | 6877 | |
976ca316 | 6878 | if (per_objfile->per_bfd->signatured_types == NULL) |
a2ce51a0 DE |
6879 | return NULL; |
6880 | find_entry.signature = sig; | |
9a3c8263 | 6881 | entry = ((struct signatured_type *) |
976ca316 | 6882 | htab_find (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6883 | &find_entry)); |
a2ce51a0 DE |
6884 | return entry; |
6885 | } | |
348e048f | 6886 | } |
18a8505e | 6887 | |
42e7ad6c | 6888 | /* Low level DIE reading support. */ |
348e048f | 6889 | |
d85a05f0 DJ |
6890 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6891 | ||
6892 | static void | |
6893 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6894 | struct dwarf2_cu *cu, |
3019eac3 | 6895 | struct dwarf2_section_info *section, |
685af9cd TT |
6896 | struct dwo_file *dwo_file, |
6897 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6898 | { |
fceca515 | 6899 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6900 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6901 | reader->cu = cu; |
3019eac3 | 6902 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6903 | reader->die_section = section; |
6904 | reader->buffer = section->buffer; | |
f664829e | 6905 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6906 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6907 | } |
6908 | ||
c0ab21c2 | 6909 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6910 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6911 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6912 | already. |
6913 | ||
6914 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6915 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6916 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6917 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6918 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6919 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6920 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6921 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6922 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6923 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6924 | kept around for at least as long as *RESULT_READER. | |
6925 | ||
b0c7bfa9 DE |
6926 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6927 | ||
6928 | static int | |
4ab09049 | 6929 | read_cutu_die_from_dwo (dwarf2_cu *cu, |
b0c7bfa9 | 6930 | struct dwo_unit *dwo_unit, |
b0c7bfa9 | 6931 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6932 | const char *stub_comp_dir, |
b0c7bfa9 | 6933 | struct die_reader_specs *result_reader, |
d521ce57 | 6934 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6935 | struct die_info **result_comp_unit_die, |
685af9cd | 6936 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6937 | { |
976ca316 | 6938 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
4ab09049 | 6939 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
976ca316 | 6940 | struct objfile *objfile = per_objfile->objfile; |
b0c7bfa9 | 6941 | bfd *abfd; |
d521ce57 | 6942 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6943 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6944 | int i,num_extra_attrs; | |
6945 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6946 | struct die_info *comp_unit_die; |
6947 | ||
b0aeadb3 DE |
6948 | /* At most one of these may be provided. */ |
6949 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6950 | |
b0c7bfa9 DE |
6951 | /* These attributes aren't processed until later: |
6952 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6953 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6954 | referenced later. However, these attributes are found in the stub | |
6955 | which we won't have later. In order to not impose this complication | |
6956 | on the rest of the code, we read them here and copy them to the | |
6957 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6958 | |
6959 | stmt_list = NULL; | |
6960 | low_pc = NULL; | |
6961 | high_pc = NULL; | |
6962 | ranges = NULL; | |
6963 | comp_dir = NULL; | |
6964 | ||
6965 | if (stub_comp_unit_die != NULL) | |
6966 | { | |
6967 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6968 | DWO file. */ | |
4ab09049 | 6969 | if (!per_cu->is_debug_types) |
b0c7bfa9 DE |
6970 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); |
6971 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6972 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6973 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6974 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6975 | ||
a39fdb41 | 6976 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6977 | |
18a8505e AT |
6978 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6979 | here (if needed). We need the value before we can process | |
6980 | DW_AT_ranges. */ | |
a39fdb41 | 6981 | cu->ranges_base = stub_comp_unit_die->ranges_base (); |
b0c7bfa9 | 6982 | } |
a2ce51a0 DE |
6983 | else if (stub_comp_dir != NULL) |
6984 | { | |
6985 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
fe56917a | 6986 | comp_dir = OBSTACK_ZALLOC (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6987 | comp_dir->name = DW_AT_comp_dir; |
6988 | comp_dir->form = DW_FORM_string; | |
c6481205 | 6989 | comp_dir->set_string_noncanonical (stub_comp_dir); |
a2ce51a0 | 6990 | } |
b0c7bfa9 DE |
6991 | |
6992 | /* Set up for reading the DWO CU/TU. */ | |
6993 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6994 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6995 | section->read (objfile); |
6996 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6997 | begin_info_ptr = info_ptr = (section->buffer |
6998 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6999 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 | 7000 | |
4ab09049 | 7001 | if (per_cu->is_debug_types) |
b0c7bfa9 | 7002 | { |
4ab09049 | 7003 | signatured_type *sig_type = (struct signatured_type *) per_cu; |
b0c7bfa9 | 7004 | |
976ca316 SM |
7005 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7006 | section, dwo_abbrev_section, | |
43988095 | 7007 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7008 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7009 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7010 | { |
7011 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 7012 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 7013 | hex_string (sig_type->signature), |
43988095 | 7014 | hex_string (cu->header.signature), |
9d8780f0 | 7015 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
7016 | bfd_get_filename (abfd)); |
7017 | } | |
9c541725 | 7018 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7019 | /* For DWOs coming from DWP files, we don't know the CU length |
7020 | nor the type's offset in the TU until now. */ | |
4057dfde | 7021 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 7022 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7023 | |
7024 | /* Establish the type offset that can be used to lookup the type. | |
7025 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7026 | sig_type->type_offset_in_section |
7027 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7028 | } |
7029 | else | |
7030 | { | |
976ca316 SM |
7031 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7032 | section, dwo_abbrev_section, | |
43988095 | 7033 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 7034 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7035 | /* For DWOs coming from DWP files, we don't know the CU length |
7036 | until now. */ | |
4057dfde | 7037 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
7038 | } |
7039 | ||
606decb2 | 7040 | dwo_abbrev_section->read (objfile); |
685af9cd | 7041 | *result_dwo_abbrev_table |
606decb2 | 7042 | = abbrev_table::read (dwo_abbrev_section, cu->header.abbrev_sect_off); |
685af9cd TT |
7043 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
7044 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
7045 | |
7046 | /* Read in the die, but leave space to copy over the attributes | |
7047 | from the stub. This has the benefit of simplifying the rest of | |
7048 | the code - all the work to maintain the illusion of a single | |
7049 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7050 | num_extra_attrs = ((stmt_list != NULL) | |
7051 | + (low_pc != NULL) | |
7052 | + (high_pc != NULL) | |
7053 | + (ranges != NULL) | |
7054 | + (comp_dir != NULL)); | |
7055 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 7056 | num_extra_attrs); |
b0c7bfa9 DE |
7057 | |
7058 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7059 | comp_unit_die = *result_comp_unit_die; | |
7060 | i = comp_unit_die->num_attrs; | |
7061 | if (stmt_list != NULL) | |
7062 | comp_unit_die->attrs[i++] = *stmt_list; | |
7063 | if (low_pc != NULL) | |
7064 | comp_unit_die->attrs[i++] = *low_pc; | |
7065 | if (high_pc != NULL) | |
7066 | comp_unit_die->attrs[i++] = *high_pc; | |
7067 | if (ranges != NULL) | |
7068 | comp_unit_die->attrs[i++] = *ranges; | |
7069 | if (comp_dir != NULL) | |
7070 | comp_unit_die->attrs[i++] = *comp_dir; | |
7071 | comp_unit_die->num_attrs += num_extra_attrs; | |
7072 | ||
b4f54984 | 7073 | if (dwarf_die_debug) |
bf6af496 DE |
7074 | { |
7075 | fprintf_unfiltered (gdb_stdlog, | |
7076 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 7077 | section->get_name (), |
bf6af496 DE |
7078 | (unsigned) (begin_info_ptr - section->buffer), |
7079 | bfd_get_filename (abfd)); | |
b4f54984 | 7080 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7081 | } |
7082 | ||
b0c7bfa9 DE |
7083 | /* Skip dummy compilation units. */ |
7084 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7085 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7086 | return 0; | |
7087 | ||
7088 | *result_info_ptr = info_ptr; | |
7089 | return 1; | |
7090 | } | |
7091 | ||
a084a2a6 AT |
7092 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
7093 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
7094 | signature is part of the header. */ | |
7095 | static gdb::optional<ULONGEST> | |
7096 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
7097 | { | |
7098 | if (cu->header.version >= 5) | |
7099 | return cu->header.signature; | |
7100 | struct attribute *attr; | |
7101 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
529908cb | 7102 | if (attr == nullptr || !attr->form_is_unsigned ()) |
a084a2a6 | 7103 | return gdb::optional<ULONGEST> (); |
529908cb | 7104 | return attr->as_unsigned (); |
a084a2a6 AT |
7105 | } |
7106 | ||
c0ab21c2 | 7107 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 7108 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 7109 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7110 | |
7111 | static struct dwo_unit * | |
4ab09049 | 7112 | lookup_dwo_unit (dwarf2_cu *cu, die_info *comp_unit_die, const char *dwo_name) |
b0c7bfa9 | 7113 | { |
4ab09049 | 7114 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
b0c7bfa9 | 7115 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 7116 | const char *comp_dir; |
b0c7bfa9 | 7117 | |
a2ce51a0 DE |
7118 | gdb_assert (cu != NULL); |
7119 | ||
b0c7bfa9 | 7120 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 7121 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 7122 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 | 7123 | |
4ab09049 SM |
7124 | if (per_cu->is_debug_types) |
7125 | dwo_unit = lookup_dwo_type_unit (cu, dwo_name, comp_dir); | |
b0c7bfa9 DE |
7126 | else |
7127 | { | |
a084a2a6 | 7128 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
4ab09049 | 7129 | |
a084a2a6 | 7130 | if (!signature.has_value ()) |
b0c7bfa9 DE |
7131 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
7132 | " [in module %s]"), | |
4ab09049 SM |
7133 | dwo_name, bfd_get_filename (per_cu->per_bfd->obfd)); |
7134 | ||
7135 | dwo_unit = lookup_dwo_comp_unit (cu, dwo_name, comp_dir, *signature); | |
b0c7bfa9 DE |
7136 | } |
7137 | ||
b0c7bfa9 DE |
7138 | return dwo_unit; |
7139 | } | |
7140 | ||
c0ab21c2 | 7141 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 7142 | See it for a description of the parameters. |
fcd3b13d | 7143 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 7144 | |
c0ab21c2 | 7145 | void |
9e021579 SM |
7146 | cutu_reader::init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
7147 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 7148 | dwarf2_cu *existing_cu) |
a2ce51a0 | 7149 | { |
a2ce51a0 | 7150 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7151 | |
7152 | /* Verify we can do the following downcast, and that we have the | |
7153 | data we need. */ | |
7154 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7155 | sig_type = (struct signatured_type *) this_cu; | |
7156 | gdb_assert (sig_type->dwo_unit != NULL); | |
7157 | ||
2e671100 SM |
7158 | dwarf2_cu *cu; |
7159 | ||
7160 | if (existing_cu != nullptr) | |
6aa5f3a6 | 7161 | { |
2e671100 SM |
7162 | cu = existing_cu; |
7163 | gdb_assert (cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 7164 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 7165 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
7166 | } |
7167 | else | |
7168 | { | |
7188ed02 | 7169 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 7170 | in per_objfile yet. */ |
7188ed02 | 7171 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
9e021579 | 7172 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
2e671100 | 7173 | cu = m_new_cu.get (); |
6aa5f3a6 DE |
7174 | } |
7175 | ||
7176 | /* A future optimization, if needed, would be to use an existing | |
7177 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7178 | could share abbrev tables. */ | |
a2ce51a0 | 7179 | |
2e671100 | 7180 | if (read_cutu_die_from_dwo (cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7181 | NULL /* stub_comp_unit_die */, |
7182 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 7183 | this, &info_ptr, |
3e225074 | 7184 | &comp_unit_die, |
c0ab21c2 | 7185 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
7186 | { |
7187 | /* Dummy die. */ | |
c0ab21c2 | 7188 | dummy_p = true; |
a2ce51a0 | 7189 | } |
a2ce51a0 DE |
7190 | } |
7191 | ||
fd820528 | 7192 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7193 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7194 | |
f4dc4d17 DE |
7195 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7196 | Otherwise the table specified in the comp unit header is read in and used. | |
7197 | This is an optimization for when we already have the abbrev table. | |
7198 | ||
2e671100 SM |
7199 | If EXISTING_CU is non-NULL, then use it. Otherwise, a new CU is |
7200 | allocated. */ | |
aaa75496 | 7201 | |
ab432490 | 7202 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7203 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 | 7204 | struct abbrev_table *abbrev_table, |
2e671100 | 7205 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
7206 | bool skip_partial) |
7207 | : die_reader_specs {}, | |
6751ebae | 7208 | m_this_cu (this_cu) |
c906108c | 7209 | { |
976ca316 | 7210 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7211 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7212 | bfd *abfd = section->get_bfd_owner (); |
c0ab21c2 | 7213 | const gdb_byte *begin_info_ptr; |
dee91e82 | 7214 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7215 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7216 | /* Non-zero if CU currently points to a DWO file and we need to |
7217 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7218 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7219 | int rereading_dwo_cu = 0; |
c906108c | 7220 | |
b4f54984 | 7221 | if (dwarf_die_debug) |
9d8780f0 | 7222 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7223 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7224 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7225 | |
a2ce51a0 DE |
7226 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7227 | file (instead of going through the stub), short-circuit all of this. */ | |
7228 | if (this_cu->reading_dwo_directly) | |
7229 | { | |
7230 | /* Narrow down the scope of possibilities to have to understand. */ | |
7231 | gdb_assert (this_cu->is_debug_types); | |
7232 | gdb_assert (abbrev_table == NULL); | |
976ca316 | 7233 | init_tu_and_read_dwo_dies (this_cu, per_objfile, existing_cu); |
a2ce51a0 DE |
7234 | return; |
7235 | } | |
7236 | ||
dee91e82 | 7237 | /* This is cheap if the section is already read in. */ |
96b79293 | 7238 | section->read (objfile); |
dee91e82 | 7239 | |
9c541725 | 7240 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7241 | |
7242 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7243 | |
2e671100 SM |
7244 | dwarf2_cu *cu; |
7245 | ||
7246 | if (existing_cu != nullptr) | |
dee91e82 | 7247 | { |
2e671100 | 7248 | cu = existing_cu; |
42e7ad6c DE |
7249 | /* If this CU is from a DWO file we need to start over, we need to |
7250 | refetch the attributes from the skeleton CU. | |
7251 | This could be optimized by retrieving those attributes from when we | |
7252 | were here the first time: the previous comp_unit_die was stored in | |
7253 | comp_unit_obstack. But there's no data yet that we need this | |
7254 | optimization. */ | |
7255 | if (cu->dwo_unit != NULL) | |
7256 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7257 | } |
7258 | else | |
7259 | { | |
7188ed02 | 7260 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 7261 | in per_objfile yet. */ |
976ca316 SM |
7262 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
7263 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); | |
c0ab21c2 | 7264 | cu = m_new_cu.get (); |
42e7ad6c | 7265 | } |
dee91e82 | 7266 | |
b0c7bfa9 | 7267 | /* Get the header. */ |
9c541725 | 7268 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7269 | { |
7270 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7271 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7272 | } |
7273 | else | |
7274 | { | |
3019eac3 | 7275 | if (this_cu->is_debug_types) |
dee91e82 | 7276 | { |
976ca316 SM |
7277 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7278 | section, abbrev_section, | |
7279 | info_ptr, rcuh_kind::TYPE); | |
dee91e82 | 7280 | |
42e7ad6c DE |
7281 | /* Since per_cu is the first member of struct signatured_type, |
7282 | we can go from a pointer to one to a pointer to the other. */ | |
7283 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7284 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7285 | gdb_assert (sig_type->type_offset_in_tu |
7286 | == cu->header.type_cu_offset_in_tu); | |
7287 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7288 | |
42e7ad6c DE |
7289 | /* LENGTH has not been set yet for type units if we're |
7290 | using .gdb_index. */ | |
4057dfde | 7291 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
7292 | |
7293 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7294 | sig_type->type_offset_in_section = |
7295 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7296 | |
7297 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7298 | } |
7299 | else | |
7300 | { | |
976ca316 SM |
7301 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7302 | section, abbrev_section, | |
43988095 JK |
7303 | info_ptr, |
7304 | rcuh_kind::COMPILE); | |
dee91e82 | 7305 | |
9c541725 | 7306 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
3ee6bb11 TV |
7307 | if (this_cu->length == 0) |
7308 | this_cu->length = cu->header.get_length (); | |
7309 | else | |
7310 | gdb_assert (this_cu->length == cu->header.get_length ()); | |
43988095 | 7311 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7312 | } |
7313 | } | |
10b3939b | 7314 | |
6caca83c | 7315 | /* Skip dummy compilation units. */ |
dee91e82 | 7316 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7317 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7318 | { |
7319 | dummy_p = true; | |
7320 | return; | |
7321 | } | |
6caca83c | 7322 | |
433df2d4 DE |
7323 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7324 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7325 | done. */ |
f4dc4d17 | 7326 | if (abbrev_table != NULL) |
685af9cd TT |
7327 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7328 | else | |
f4dc4d17 | 7329 | { |
606decb2 | 7330 | abbrev_section->read (objfile); |
c0ab21c2 | 7331 | m_abbrev_table_holder |
606decb2 | 7332 | = abbrev_table::read (abbrev_section, cu->header.abbrev_sect_off); |
c0ab21c2 | 7333 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7334 | } |
af703f96 | 7335 | |
dee91e82 | 7336 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 7337 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 7338 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 7339 | |
58f0c718 | 7340 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7341 | { |
7342 | dummy_p = true; | |
7343 | return; | |
7344 | } | |
58f0c718 | 7345 | |
b0c7bfa9 | 7346 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7347 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7348 | table from the DWO file and pass the ownership over to us. It will be | |
7349 | referenced from READER, so we must make sure to free it after we're done | |
7350 | with READER. | |
7351 | ||
b0c7bfa9 DE |
7352 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7353 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7354 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7355 | if (dwo_name != nullptr) |
3019eac3 | 7356 | { |
3019eac3 | 7357 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7358 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 7359 | |
3e225074 | 7360 | if (comp_unit_die->has_children) |
6a506a2d | 7361 | { |
b98664d3 | 7362 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7363 | " has children (offset %s) [in module %s]"), |
7364 | sect_offset_str (this_cu->sect_off), | |
7365 | bfd_get_filename (abfd)); | |
6a506a2d | 7366 | } |
4ab09049 | 7367 | dwo_unit = lookup_dwo_unit (cu, comp_unit_die, dwo_name); |
6a506a2d | 7368 | if (dwo_unit != NULL) |
3019eac3 | 7369 | { |
4ab09049 | 7370 | if (read_cutu_die_from_dwo (cu, dwo_unit, |
a2ce51a0 | 7371 | comp_unit_die, NULL, |
c0ab21c2 | 7372 | this, &info_ptr, |
3e225074 | 7373 | &dwo_comp_unit_die, |
c0ab21c2 | 7374 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7375 | { |
7376 | /* Dummy die. */ | |
c0ab21c2 | 7377 | dummy_p = true; |
6a506a2d DE |
7378 | return; |
7379 | } | |
7380 | comp_unit_die = dwo_comp_unit_die; | |
7381 | } | |
7382 | else | |
7383 | { | |
7384 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7385 | the stub. A complaint has already been logged. There's | |
7386 | not much more we can do except pass on the stub DIE to | |
7387 | die_reader_func. We don't want to throw an error on bad | |
7388 | debug info. */ | |
3019eac3 DE |
7389 | } |
7390 | } | |
c0ab21c2 | 7391 | } |
3019eac3 | 7392 | |
6751ebae TT |
7393 | void |
7394 | cutu_reader::keep () | |
c0ab21c2 | 7395 | { |
b0c7bfa9 | 7396 | /* Done, clean up. */ |
6751ebae TT |
7397 | gdb_assert (!dummy_p); |
7398 | if (m_new_cu != NULL) | |
348e048f | 7399 | { |
7188ed02 | 7400 | /* Save this dwarf2_cu in the per_objfile. The per_objfile owns it |
dda83cd7 | 7401 | now. */ |
7188ed02 SM |
7402 | dwarf2_per_objfile *per_objfile = m_new_cu->per_objfile; |
7403 | per_objfile->set_cu (m_this_cu, m_new_cu.release ()); | |
348e048f | 7404 | } |
dee91e82 DE |
7405 | } |
7406 | ||
18a8505e AT |
7407 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7408 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7409 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7410 | |
7411 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7412 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7413 | |
7414 | We fill in THIS_CU->length. | |
7415 | ||
dee91e82 | 7416 | THIS_CU->cu is always freed when done. |
3019eac3 | 7417 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7418 | to care whether it refers to the "main" CU or the DWO CU. |
7419 | ||
7420 | When parent_cu is passed, it is used to provide a default value for | |
7421 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7422 | |
ab432490 | 7423 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7424 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
7425 | struct dwarf2_cu *parent_cu, |
7426 | struct dwo_file *dwo_file) | |
7427 | : die_reader_specs {}, | |
7428 | m_this_cu (this_cu) | |
dee91e82 | 7429 | { |
976ca316 | 7430 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7431 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7432 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7433 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7434 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7435 | |
b4f54984 | 7436 | if (dwarf_die_debug) |
9d8780f0 | 7437 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7438 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7439 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7440 | |
976ca316 | 7441 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
dee91e82 | 7442 | |
33e80786 DE |
7443 | abbrev_section = (dwo_file != NULL |
7444 | ? &dwo_file->sections.abbrev | |
7445 | : get_abbrev_section_for_cu (this_cu)); | |
7446 | ||
dee91e82 | 7447 | /* This is cheap if the section is already read in. */ |
96b79293 | 7448 | section->read (objfile); |
dee91e82 | 7449 | |
976ca316 | 7450 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
dee91e82 | 7451 | |
9c541725 | 7452 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
976ca316 SM |
7453 | info_ptr = read_and_check_comp_unit_head (per_objfile, &m_new_cu->header, |
7454 | section, abbrev_section, info_ptr, | |
43988095 JK |
7455 | (this_cu->is_debug_types |
7456 | ? rcuh_kind::TYPE | |
7457 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7458 | |
18a8505e AT |
7459 | if (parent_cu != nullptr) |
7460 | { | |
c0ab21c2 TT |
7461 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7462 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7463 | } |
4057dfde | 7464 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7465 | |
7466 | /* Skip dummy compilation units. */ | |
7467 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7468 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7469 | { |
7470 | dummy_p = true; | |
7471 | return; | |
7472 | } | |
72bf9492 | 7473 | |
606decb2 | 7474 | abbrev_section->read (objfile); |
c0ab21c2 | 7475 | m_abbrev_table_holder |
606decb2 | 7476 | = abbrev_table::read (abbrev_section, m_new_cu->header.abbrev_sect_off); |
dee91e82 | 7477 | |
c0ab21c2 TT |
7478 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7479 | m_abbrev_table_holder.get ()); | |
3e225074 | 7480 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7481 | } |
7482 | ||
0018ea6f DE |
7483 | \f |
7484 | /* Type Unit Groups. | |
dee91e82 | 7485 | |
0018ea6f DE |
7486 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7487 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7488 | so that all types coming from the same compilation (.o file) are grouped | |
7489 | together. A future step could be to put the types in the same symtab as | |
7490 | the CU the types ultimately came from. */ | |
ff013f42 | 7491 | |
f4dc4d17 DE |
7492 | static hashval_t |
7493 | hash_type_unit_group (const void *item) | |
7494 | { | |
9a3c8263 SM |
7495 | const struct type_unit_group *tu_group |
7496 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7497 | |
094b34ac | 7498 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7499 | } |
348e048f DE |
7500 | |
7501 | static int | |
f4dc4d17 | 7502 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7503 | { |
9a3c8263 SM |
7504 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7505 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7506 | |
094b34ac | 7507 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7508 | } |
348e048f | 7509 | |
f4dc4d17 DE |
7510 | /* Allocate a hash table for type unit groups. */ |
7511 | ||
eaa5fa8b | 7512 | static htab_up |
298e9637 | 7513 | allocate_type_unit_groups_table () |
f4dc4d17 | 7514 | { |
eaa5fa8b TT |
7515 | return htab_up (htab_create_alloc (3, |
7516 | hash_type_unit_group, | |
7517 | eq_type_unit_group, | |
7518 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7519 | } |
dee91e82 | 7520 | |
f4dc4d17 DE |
7521 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7522 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7523 | of any one psymtab grow too big. */ | |
7524 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7525 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7526 | |
094b34ac | 7527 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7528 | Create the type_unit_group object used to hold one or more TUs. */ |
7529 | ||
7530 | static struct type_unit_group * | |
094b34ac | 7531 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7532 | { |
976ca316 SM |
7533 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7534 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
094b34ac | 7535 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7536 | struct type_unit_group *tu_group; |
f4dc4d17 | 7537 | |
976ca316 | 7538 | tu_group = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, type_unit_group); |
094b34ac | 7539 | per_cu = &tu_group->per_cu; |
1859c670 | 7540 | per_cu->per_bfd = per_bfd; |
f4dc4d17 | 7541 | |
1859c670 | 7542 | if (per_bfd->using_index) |
094b34ac | 7543 | { |
1859c670 | 7544 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
094b34ac | 7545 | struct dwarf2_per_cu_quick_data); |
094b34ac DE |
7546 | } |
7547 | else | |
7548 | { | |
9c541725 | 7549 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7550 | dwarf2_psymtab *pst; |
528e1572 | 7551 | std::string name; |
094b34ac DE |
7552 | |
7553 | /* Give the symtab a useful name for debug purposes. */ | |
7554 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7555 | name = string_printf ("<type_units_%d>", |
7556 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7557 | else |
528e1572 | 7558 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7559 | |
976ca316 | 7560 | pst = create_partial_symtab (per_cu, per_objfile, name.c_str ()); |
6d94535f | 7561 | pst->anonymous = true; |
094b34ac | 7562 | } |
f4dc4d17 | 7563 | |
094b34ac | 7564 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7565 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7566 | |
7567 | return tu_group; | |
7568 | } | |
7569 | ||
094b34ac DE |
7570 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7571 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7572 | |
7573 | static struct type_unit_group * | |
ff39bb5e | 7574 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7575 | { |
976ca316 SM |
7576 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7577 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; | |
f4dc4d17 DE |
7578 | struct type_unit_group *tu_group; |
7579 | void **slot; | |
7580 | unsigned int line_offset; | |
7581 | struct type_unit_group type_unit_group_for_lookup; | |
7582 | ||
976ca316 SM |
7583 | if (per_objfile->per_bfd->type_unit_groups == NULL) |
7584 | per_objfile->per_bfd->type_unit_groups = allocate_type_unit_groups_table (); | |
f4dc4d17 DE |
7585 | |
7586 | /* Do we need to create a new group, or can we use an existing one? */ | |
7587 | ||
529908cb | 7588 | if (stmt_list != nullptr && stmt_list->form_is_unsigned ()) |
f4dc4d17 | 7589 | { |
529908cb | 7590 | line_offset = stmt_list->as_unsigned (); |
f4dc4d17 DE |
7591 | ++tu_stats->nr_symtab_sharers; |
7592 | } | |
7593 | else | |
7594 | { | |
7595 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7596 | We can do various things here like create one group per TU or | |
7597 | spread them over multiple groups to split up the expansion work. | |
7598 | To avoid worst case scenarios (too many groups or too large groups) | |
7599 | we, umm, group them in bunches. */ | |
7600 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7601 | | (tu_stats->nr_stmt_less_type_units | |
7602 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7603 | ++tu_stats->nr_stmt_less_type_units; | |
7604 | } | |
7605 | ||
094b34ac | 7606 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7607 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
976ca316 | 7608 | slot = htab_find_slot (per_objfile->per_bfd->type_unit_groups.get (), |
f4dc4d17 DE |
7609 | &type_unit_group_for_lookup, INSERT); |
7610 | if (*slot != NULL) | |
7611 | { | |
9a3c8263 | 7612 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7613 | gdb_assert (tu_group != NULL); |
7614 | } | |
7615 | else | |
7616 | { | |
9c541725 | 7617 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7618 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7619 | *slot = tu_group; |
7620 | ++tu_stats->nr_symtabs; | |
7621 | } | |
7622 | ||
7623 | return tu_group; | |
7624 | } | |
0018ea6f DE |
7625 | \f |
7626 | /* Partial symbol tables. */ | |
7627 | ||
7628 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7629 | ||
7630 | The caller must fill in the following details: | |
7631 | dirname, textlow, texthigh. */ | |
7632 | ||
891813be | 7633 | static dwarf2_psymtab * |
7aa104c4 SM |
7634 | create_partial_symtab (dwarf2_per_cu_data *per_cu, |
7635 | dwarf2_per_objfile *per_objfile, | |
7636 | const char *name) | |
0018ea6f | 7637 | { |
7aa104c4 | 7638 | struct objfile *objfile = per_objfile->objfile; |
891813be | 7639 | dwarf2_psymtab *pst; |
0018ea6f | 7640 | |
9f4e76a4 | 7641 | pst = new dwarf2_psymtab (name, objfile, per_cu); |
0018ea6f | 7642 | |
6d94535f | 7643 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7644 | |
7645 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7646 | per_cu->v.psymtab = pst; |
7647 | ||
7648 | return pst; | |
7649 | } | |
7650 | ||
c0ab21c2 | 7651 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7652 | |
7653 | static void | |
7654 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7655 | const gdb_byte *info_ptr, |
0018ea6f | 7656 | struct die_info *comp_unit_die, |
c0ab21c2 | 7657 | enum language pretend_language) |
0018ea6f DE |
7658 | { |
7659 | struct dwarf2_cu *cu = reader->cu; | |
7aa104c4 SM |
7660 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7661 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 7662 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7663 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7664 | CORE_ADDR baseaddr; |
7665 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7666 | dwarf2_psymtab *pst; |
3a2b436a | 7667 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7668 | const char *filename; |
0018ea6f | 7669 | |
0018ea6f DE |
7670 | gdb_assert (! per_cu->is_debug_types); |
7671 | ||
c0ab21c2 | 7672 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7673 | |
0018ea6f | 7674 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7675 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7676 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7677 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7678 | if (filename == NULL) | |
0018ea6f | 7679 | filename = ""; |
2e927613 TV |
7680 | else if (strcmp (filename, artificial) == 0) |
7681 | { | |
7682 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7683 | sect_offset_str (per_cu->sect_off), |
7684 | (char *) NULL)); | |
2e927613 TV |
7685 | filename = debug_filename.get (); |
7686 | } | |
0018ea6f | 7687 | |
7aa104c4 | 7688 | pst = create_partial_symtab (per_cu, per_objfile, filename); |
0018ea6f DE |
7689 | |
7690 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7691 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7692 | |
b3b3bada | 7693 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7694 | |
7695 | dwarf2_find_base_address (comp_unit_die, cu); | |
7696 | ||
7697 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7698 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7699 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7700 | &best_highpc, cu, pst); | |
7701 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7702 | { |
7703 | CORE_ADDR low | |
7704 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7705 | - baseaddr); | |
7706 | CORE_ADDR high | |
7707 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7708 | - baseaddr - 1); | |
7709 | /* Store the contiguous range if it is not empty; it can be | |
7710 | empty for CUs with no code. */ | |
d320c2b5 TT |
7711 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7712 | low, high, pst); | |
79748972 | 7713 | } |
0018ea6f DE |
7714 | |
7715 | /* Check if comp unit has_children. | |
7716 | If so, read the rest of the partial symbols from this comp unit. | |
7717 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7718 | if (comp_unit_die->has_children) |
0018ea6f DE |
7719 | { |
7720 | struct partial_die_info *first_die; | |
7721 | CORE_ADDR lowpc, highpc; | |
7722 | ||
7723 | lowpc = ((CORE_ADDR) -1); | |
7724 | highpc = ((CORE_ADDR) 0); | |
7725 | ||
7726 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7727 | ||
7728 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7729 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7730 | |
7731 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7732 | complaints from `maint check'. */ | |
7733 | if (lowpc == ((CORE_ADDR) -1)) | |
7734 | lowpc = highpc; | |
7735 | ||
7736 | /* If the compilation unit didn't have an explicit address range, | |
7737 | then use the information extracted from its child dies. */ | |
e385593e | 7738 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7739 | { |
7740 | best_lowpc = lowpc; | |
7741 | best_highpc = highpc; | |
7742 | } | |
7743 | } | |
4ae976d1 | 7744 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7745 | best_lowpc + baseaddr) |
7746 | - baseaddr); | |
4ae976d1 | 7747 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7748 | best_highpc + baseaddr) |
7749 | - baseaddr); | |
0018ea6f | 7750 | |
ae7754b2 | 7751 | pst->end (); |
0018ea6f | 7752 | |
ae640021 | 7753 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7754 | { |
7755 | int i; | |
ae640021 | 7756 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7757 | |
7758 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7759 | post-pass. */ | |
7760 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7761 | pst->dependencies |
7762 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7763 | for (i = 0; i < len; ++i) |
7764 | { | |
7765 | pst->dependencies[i] | |
7766 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7767 | } | |
0018ea6f | 7768 | |
ae640021 | 7769 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7770 | } |
7771 | ||
7772 | /* Get the list of files included in the current compilation unit, | |
7773 | and build a psymtab for each of them. */ | |
7774 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7775 | ||
6f738b01 SM |
7776 | dwarf_read_debug_printf ("Psymtab for %s unit @%s: %s - %s" |
7777 | ", %d global, %d static syms", | |
7778 | per_cu->is_debug_types ? "type" : "comp", | |
7779 | sect_offset_str (per_cu->sect_off), | |
7780 | paddress (gdbarch, pst->text_low (objfile)), | |
7781 | paddress (gdbarch, pst->text_high (objfile)), | |
7782 | (int) pst->global_psymbols.size (), | |
7783 | (int) pst->static_psymbols.size ()); | |
0018ea6f DE |
7784 | } |
7785 | ||
7786 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7787 | Process compilation unit THIS_CU for a psymtab. */ | |
7788 | ||
7789 | static void | |
ab432490 SM |
7790 | process_psymtab_comp_unit (dwarf2_per_cu_data *this_cu, |
7791 | dwarf2_per_objfile *per_objfile, | |
135f5437 | 7792 | bool want_partial_unit, |
b93601f3 | 7793 | enum language pretend_language) |
0018ea6f DE |
7794 | { |
7795 | /* If this compilation unit was already read in, free the | |
7796 | cached copy in order to read it in again. This is | |
7797 | necessary because we skipped some symbols when we first | |
7798 | read in the compilation unit (see load_partial_dies). | |
7799 | This problem could be avoided, but the benefit is unclear. */ | |
7188ed02 | 7800 | per_objfile->remove_cu (this_cu); |
0018ea6f | 7801 | |
2e671100 | 7802 | cutu_reader reader (this_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 | 7803 | |
58990295 TV |
7804 | switch (reader.comp_unit_die->tag) |
7805 | { | |
7806 | case DW_TAG_compile_unit: | |
7807 | this_cu->unit_type = DW_UT_compile; | |
7808 | break; | |
7809 | case DW_TAG_partial_unit: | |
7810 | this_cu->unit_type = DW_UT_partial; | |
7811 | break; | |
7812 | default: | |
7813 | abort (); | |
7814 | } | |
7815 | ||
c0ab21c2 | 7816 | if (reader.dummy_p) |
f1902523 | 7817 | { |
c0ab21c2 | 7818 | /* Nothing. */ |
f1902523 | 7819 | } |
c0ab21c2 | 7820 | else if (this_cu->is_debug_types) |
3e225074 TT |
7821 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7822 | reader.comp_unit_die); | |
135f5437 TT |
7823 | else if (want_partial_unit |
7824 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7825 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7826 | reader.comp_unit_die, | |
c0ab21c2 | 7827 | pretend_language); |
0018ea6f | 7828 | |
7188ed02 | 7829 | this_cu->lang = reader.cu->language; |
58990295 | 7830 | |
0018ea6f | 7831 | /* Age out any secondary CUs. */ |
7188ed02 | 7832 | per_objfile->age_comp_units (); |
0018ea6f | 7833 | } |
f4dc4d17 DE |
7834 | |
7835 | /* Reader function for build_type_psymtabs. */ | |
7836 | ||
7837 | static void | |
7838 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7839 | const gdb_byte *info_ptr, |
3e225074 | 7840 | struct die_info *type_unit_die) |
f4dc4d17 | 7841 | { |
976ca316 | 7842 | dwarf2_per_objfile *per_objfile = reader->cu->per_objfile; |
f4dc4d17 DE |
7843 | struct dwarf2_cu *cu = reader->cu; |
7844 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7845 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7846 | struct type_unit_group *tu_group; |
7847 | struct attribute *attr; | |
7848 | struct partial_die_info *first_die; | |
7849 | CORE_ADDR lowpc, highpc; | |
891813be | 7850 | dwarf2_psymtab *pst; |
f4dc4d17 | 7851 | |
0186c6a7 DE |
7852 | gdb_assert (per_cu->is_debug_types); |
7853 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7854 | |
3e225074 | 7855 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7856 | return; |
7857 | ||
052c8bb8 | 7858 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7859 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7860 | |
df07e2c7 | 7861 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7862 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7863 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7864 | |
7865 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
976ca316 | 7866 | pst = create_partial_symtab (per_cu, per_objfile, ""); |
6d94535f | 7867 | pst->anonymous = true; |
f4dc4d17 DE |
7868 | |
7869 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7870 | ||
7871 | lowpc = (CORE_ADDR) -1; | |
7872 | highpc = (CORE_ADDR) 0; | |
7873 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7874 | ||
ae7754b2 | 7875 | pst->end (); |
f4dc4d17 DE |
7876 | } |
7877 | ||
73051182 DE |
7878 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7879 | ||
7880 | struct tu_abbrev_offset | |
7881 | { | |
b2bdb8cf SM |
7882 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7883 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7884 | {} | |
7885 | ||
7886 | signatured_type *sig_type; | |
73051182 DE |
7887 | sect_offset abbrev_offset; |
7888 | }; | |
7889 | ||
484cf504 | 7890 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7891 | |
484cf504 TT |
7892 | static bool |
7893 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7894 | const struct tu_abbrev_offset &b) | |
73051182 | 7895 | { |
484cf504 | 7896 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7897 | } |
7898 | ||
7899 | /* Efficiently read all the type units. | |
7900 | This does the bulk of the work for build_type_psymtabs. | |
7901 | ||
7902 | The efficiency is because we sort TUs by the abbrev table they use and | |
7903 | only read each abbrev table once. In one program there are 200K TUs | |
7904 | sharing 8K abbrev tables. | |
7905 | ||
7906 | The main purpose of this function is to support building the | |
5989a64e | 7907 | dwarf2_per_objfile->per_bfd->type_unit_groups table. |
73051182 DE |
7908 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we |
7909 | can collapse the search space by grouping them by stmt_list. | |
7910 | The savings can be significant, in the same program from above the 200K TUs | |
7911 | share 8K stmt_list tables. | |
7912 | ||
7913 | FUNC is expected to call get_type_unit_group, which will create the | |
7914 | struct type_unit_group if necessary and add it to | |
5989a64e | 7915 | dwarf2_per_objfile->per_bfd->type_unit_groups. */ |
73051182 DE |
7916 | |
7917 | static void | |
976ca316 | 7918 | build_type_psymtabs_1 (dwarf2_per_objfile *per_objfile) |
73051182 | 7919 | { |
976ca316 | 7920 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
685af9cd | 7921 | abbrev_table_up abbrev_table; |
73051182 | 7922 | sect_offset abbrev_offset; |
73051182 DE |
7923 | |
7924 | /* It's up to the caller to not call us multiple times. */ | |
976ca316 | 7925 | gdb_assert (per_objfile->per_bfd->type_unit_groups == NULL); |
73051182 | 7926 | |
976ca316 | 7927 | if (per_objfile->per_bfd->all_type_units.empty ()) |
73051182 DE |
7928 | return; |
7929 | ||
7930 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7931 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7932 | read each abbrev table in. | |
7933 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7934 | This is simpler and efficient enough for now. | |
7935 | ||
7936 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7937 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7938 | stmt_list value too so in practice this should work well. | |
7939 | ||
7940 | The basic algorithm here is: | |
7941 | ||
7942 | sort TUs by abbrev table | |
7943 | for each TU with same abbrev table: | |
7944 | read abbrev table if first user | |
7945 | read TU top level DIE | |
7946 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7947 | call FUNC */ | |
7948 | ||
6f738b01 | 7949 | dwarf_read_debug_printf ("Building type unit groups ..."); |
73051182 DE |
7950 | |
7951 | /* Sort in a separate table to maintain the order of all_type_units | |
7952 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf | 7953 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
976ca316 | 7954 | sorted_by_abbrev.reserve (per_objfile->per_bfd->all_type_units.size ()); |
b2bdb8cf | 7955 | |
976ca316 | 7956 | for (signatured_type *sig_type : per_objfile->per_bfd->all_type_units) |
b2bdb8cf | 7957 | sorted_by_abbrev.emplace_back |
976ca316 | 7958 | (sig_type, read_abbrev_offset (per_objfile, sig_type->per_cu.section, |
b2bdb8cf | 7959 | sig_type->per_cu.sect_off)); |
73051182 | 7960 | |
484cf504 TT |
7961 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7962 | sort_tu_by_abbrev_offset); | |
73051182 | 7963 | |
9c541725 | 7964 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7965 | |
b2bdb8cf | 7966 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7967 | { |
73051182 DE |
7968 | /* Switch to the next abbrev table if necessary. */ |
7969 | if (abbrev_table == NULL | |
b2bdb8cf | 7970 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7971 | { |
b2bdb8cf | 7972 | abbrev_offset = tu.abbrev_offset; |
606decb2 | 7973 | per_objfile->per_bfd->abbrev.read (per_objfile->objfile); |
73051182 | 7974 | abbrev_table = |
606decb2 | 7975 | abbrev_table::read (&per_objfile->per_bfd->abbrev, abbrev_offset); |
73051182 DE |
7976 | ++tu_stats->nr_uniq_abbrev_tables; |
7977 | } | |
7978 | ||
976ca316 | 7979 | cutu_reader reader (&tu.sig_type->per_cu, per_objfile, |
2e671100 | 7980 | abbrev_table.get (), nullptr, false); |
c0ab21c2 TT |
7981 | if (!reader.dummy_p) |
7982 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7983 | reader.comp_unit_die); |
73051182 | 7984 | } |
6aa5f3a6 | 7985 | } |
73051182 | 7986 | |
6aa5f3a6 DE |
7987 | /* Print collected type unit statistics. */ |
7988 | ||
7989 | static void | |
976ca316 | 7990 | print_tu_stats (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 | 7991 | { |
976ca316 | 7992 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
6aa5f3a6 | 7993 | |
6f738b01 SM |
7994 | dwarf_read_debug_printf ("Type unit statistics:"); |
7995 | dwarf_read_debug_printf (" %zu TUs", | |
7996 | per_objfile->per_bfd->all_type_units.size ()); | |
7997 | dwarf_read_debug_printf (" %d uniq abbrev tables", | |
7998 | tu_stats->nr_uniq_abbrev_tables); | |
7999 | dwarf_read_debug_printf (" %d symtabs from stmt_list entries", | |
8000 | tu_stats->nr_symtabs); | |
8001 | dwarf_read_debug_printf (" %d symtab sharers", | |
8002 | tu_stats->nr_symtab_sharers); | |
8003 | dwarf_read_debug_printf (" %d type units without a stmt_list", | |
8004 | tu_stats->nr_stmt_less_type_units); | |
8005 | dwarf_read_debug_printf (" %d all_type_units reallocs", | |
8006 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
8007 | } |
8008 | ||
f4dc4d17 DE |
8009 | /* Traversal function for build_type_psymtabs. */ |
8010 | ||
8011 | static int | |
8012 | build_type_psymtab_dependencies (void **slot, void *info) | |
8013 | { | |
976ca316 SM |
8014 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
8015 | struct objfile *objfile = per_objfile->objfile; | |
f4dc4d17 | 8016 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; |
094b34ac | 8017 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 8018 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 8019 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
8020 | int i; |
8021 | ||
8022 | gdb_assert (len > 0); | |
197400e8 | 8023 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
8024 | |
8025 | pst->number_of_dependencies = len; | |
a9342b62 | 8026 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 8027 | for (i = 0; i < len; ++i) |
f4dc4d17 | 8028 | { |
df07e2c7 | 8029 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
8030 | gdb_assert (iter->per_cu.is_debug_types); |
8031 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8032 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8033 | } |
8034 | ||
df07e2c7 AB |
8035 | delete tu_group->tus; |
8036 | tu_group->tus = nullptr; | |
348e048f DE |
8037 | |
8038 | return 1; | |
8039 | } | |
8040 | ||
8041 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8042 | Build partial symbol tables for the .debug_types comp-units. */ | |
8043 | ||
8044 | static void | |
976ca316 | 8045 | build_type_psymtabs (dwarf2_per_objfile *per_objfile) |
348e048f | 8046 | { |
976ca316 | 8047 | if (! create_all_type_units (per_objfile)) |
348e048f DE |
8048 | return; |
8049 | ||
976ca316 | 8050 | build_type_psymtabs_1 (per_objfile); |
6aa5f3a6 | 8051 | } |
f4dc4d17 | 8052 | |
6aa5f3a6 DE |
8053 | /* Traversal function for process_skeletonless_type_unit. |
8054 | Read a TU in a DWO file and build partial symbols for it. */ | |
8055 | ||
8056 | static int | |
8057 | process_skeletonless_type_unit (void **slot, void *info) | |
8058 | { | |
8059 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
976ca316 | 8060 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
6aa5f3a6 DE |
8061 | struct signatured_type find_entry, *entry; |
8062 | ||
8063 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8064 | ||
976ca316 SM |
8065 | if (per_objfile->per_bfd->signatured_types == NULL) |
8066 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
6aa5f3a6 DE |
8067 | |
8068 | find_entry.signature = dwo_unit->signature; | |
976ca316 | 8069 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 8070 | &find_entry, INSERT); |
6aa5f3a6 DE |
8071 | /* If we've already seen this type there's nothing to do. What's happening |
8072 | is we're doing our own version of comdat-folding here. */ | |
8073 | if (*slot != NULL) | |
8074 | return 1; | |
8075 | ||
8076 | /* This does the job that create_all_type_units would have done for | |
8077 | this TU. */ | |
976ca316 SM |
8078 | entry = add_type_unit (per_objfile, dwo_unit->signature, slot); |
8079 | fill_in_sig_entry_from_dwo_entry (per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8080 | *slot = entry; |
8081 | ||
8082 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
976ca316 | 8083 | cutu_reader reader (&entry->per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
8084 | if (!reader.dummy_p) |
8085 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 8086 | reader.comp_unit_die); |
6aa5f3a6 DE |
8087 | |
8088 | return 1; | |
8089 | } | |
8090 | ||
8091 | /* Traversal function for process_skeletonless_type_units. */ | |
8092 | ||
8093 | static int | |
8094 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8095 | { | |
8096 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8097 | ||
8098 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
8099 | htab_traverse_noresize (dwo_file->tus.get (), |
8100 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
8101 | |
8102 | return 1; | |
8103 | } | |
8104 | ||
8105 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8106 | This is needed in case a TU was emitted without its skeleton. | |
8107 | Note: This can't be done until we know what all the DWO files are. */ | |
8108 | ||
8109 | static void | |
976ca316 | 8110 | process_skeletonless_type_units (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 DE |
8111 | { |
8112 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
976ca316 SM |
8113 | if (get_dwp_file (per_objfile) == NULL |
8114 | && per_objfile->per_bfd->dwo_files != NULL) | |
6aa5f3a6 | 8115 | { |
976ca316 | 8116 | htab_traverse_noresize (per_objfile->per_bfd->dwo_files.get (), |
6aa5f3a6 | 8117 | process_dwo_file_for_skeletonless_type_units, |
976ca316 | 8118 | per_objfile); |
6aa5f3a6 | 8119 | } |
348e048f DE |
8120 | } |
8121 | ||
ed2dc618 | 8122 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8123 | |
8124 | static void | |
976ca316 | 8125 | set_partial_user (dwarf2_per_objfile *per_objfile) |
95554aad | 8126 | { |
976ca316 | 8127 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
95554aad | 8128 | { |
891813be | 8129 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 8130 | |
36586728 TT |
8131 | if (pst == NULL) |
8132 | continue; | |
8133 | ||
b76e467d | 8134 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8135 | { |
8136 | /* Set the 'user' field only if it is not already set. */ | |
8137 | if (pst->dependencies[j]->user == NULL) | |
8138 | pst->dependencies[j]->user = pst; | |
8139 | } | |
8140 | } | |
8141 | } | |
8142 | ||
93311388 DE |
8143 | /* Build the partial symbol table by doing a quick pass through the |
8144 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8145 | |
93311388 | 8146 | static void |
976ca316 | 8147 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile) |
93311388 | 8148 | { |
976ca316 | 8149 | struct objfile *objfile = per_objfile->objfile; |
93311388 | 8150 | |
6f738b01 SM |
8151 | dwarf_read_debug_printf ("Building psymtabs of objfile %s ...", |
8152 | objfile_name (objfile)); | |
45cfd468 | 8153 | |
76935768 | 8154 | scoped_restore restore_reading_psyms |
976ca316 | 8155 | = make_scoped_restore (&per_objfile->per_bfd->reading_partial_symbols, |
76935768 | 8156 | true); |
98bfdba5 | 8157 | |
976ca316 | 8158 | per_objfile->per_bfd->info.read (objfile); |
91c24f0a | 8159 | |
93311388 DE |
8160 | /* Any cached compilation units will be linked by the per-objfile |
8161 | read_in_chain. Make sure to free them when we're done. */ | |
976ca316 | 8162 | free_cached_comp_units freer (per_objfile); |
72bf9492 | 8163 | |
976ca316 | 8164 | build_type_psymtabs (per_objfile); |
348e048f | 8165 | |
976ca316 | 8166 | create_all_comp_units (per_objfile); |
c906108c | 8167 | |
60606b2c TT |
8168 | /* Create a temporary address map on a temporary obstack. We later |
8169 | copy this to the final obstack. */ | |
8268c778 | 8170 | auto_obstack temp_obstack; |
791afaa2 TT |
8171 | |
8172 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 8173 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 8174 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 8175 | |
976ca316 | 8176 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3d5afab3 TV |
8177 | { |
8178 | if (per_cu->v.psymtab != NULL) | |
8179 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
8180 | continue; | |
976ca316 | 8181 | process_psymtab_comp_unit (per_cu, per_objfile, false, |
ab432490 | 8182 | language_minimal); |
3d5afab3 | 8183 | } |
ff013f42 | 8184 | |
6aa5f3a6 | 8185 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
976ca316 | 8186 | process_skeletonless_type_units (per_objfile); |
6aa5f3a6 DE |
8187 | |
8188 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
976ca316 | 8189 | if (per_objfile->per_bfd->type_unit_groups != NULL) |
6aa5f3a6 | 8190 | { |
976ca316 SM |
8191 | htab_traverse_noresize (per_objfile->per_bfd->type_unit_groups.get (), |
8192 | build_type_psymtab_dependencies, per_objfile); | |
6aa5f3a6 DE |
8193 | } |
8194 | ||
6f738b01 | 8195 | if (dwarf_read_debug > 0) |
976ca316 | 8196 | print_tu_stats (per_objfile); |
6aa5f3a6 | 8197 | |
976ca316 | 8198 | set_partial_user (per_objfile); |
95554aad | 8199 | |
d320c2b5 TT |
8200 | objfile->partial_symtabs->psymtabs_addrmap |
8201 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 8202 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
8203 | /* At this point we want to keep the address map. */ |
8204 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8205 | |
6f738b01 SM |
8206 | dwarf_read_debug_printf ("Done building psymtabs of %s", |
8207 | objfile_name (objfile)); | |
ae038cb0 DJ |
8208 | } |
8209 | ||
dee91e82 DE |
8210 | /* Load the partial DIEs for a secondary CU into memory. |
8211 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8212 | |
dee91e82 | 8213 | static void |
ab432490 | 8214 | load_partial_comp_unit (dwarf2_per_cu_data *this_cu, |
2e671100 SM |
8215 | dwarf2_per_objfile *per_objfile, |
8216 | dwarf2_cu *existing_cu) | |
dee91e82 | 8217 | { |
2e671100 | 8218 | cutu_reader reader (this_cu, per_objfile, nullptr, existing_cu, false); |
c0ab21c2 TT |
8219 | |
8220 | if (!reader.dummy_p) | |
8221 | { | |
8222 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
8223 | language_minimal); | |
8224 | ||
8225 | /* Check if comp unit has_children. | |
8226 | If so, read the rest of the partial symbols from this comp unit. | |
8227 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 8228 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 8229 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
8230 | |
8231 | reader.keep (); | |
c0ab21c2 | 8232 | } |
ae038cb0 DJ |
8233 | } |
8234 | ||
ae038cb0 | 8235 | static void |
976ca316 | 8236 | read_comp_units_from_section (dwarf2_per_objfile *per_objfile, |
36586728 | 8237 | struct dwarf2_section_info *section, |
f1902523 | 8238 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8239 | unsigned int is_dwz) |
ae038cb0 | 8240 | { |
d521ce57 | 8241 | const gdb_byte *info_ptr; |
976ca316 | 8242 | struct objfile *objfile = per_objfile->objfile; |
be391dca | 8243 | |
6f738b01 SM |
8244 | dwarf_read_debug_printf ("Reading %s for %s", |
8245 | section->get_name (), | |
8246 | section->get_file_name ()); | |
bf6af496 | 8247 | |
96b79293 | 8248 | section->read (objfile); |
ae038cb0 | 8249 | |
36586728 | 8250 | info_ptr = section->buffer; |
6e70227d | 8251 | |
36586728 | 8252 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8253 | { |
ae038cb0 | 8254 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8255 | |
9c541725 | 8256 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8257 | |
f1902523 | 8258 | comp_unit_head cu_header; |
976ca316 | 8259 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 SM |
8260 | abbrev_section, info_ptr, |
8261 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8262 | |
8263 | /* Save the compilation unit for later lookup. */ | |
f1902523 | 8264 | if (cu_header.unit_type != DW_UT_type) |
976ca316 | 8265 | this_cu = per_objfile->per_bfd->allocate_per_cu (); |
f1902523 JK |
8266 | else |
8267 | { | |
976ca316 | 8268 | auto sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
f1902523 JK |
8269 | sig_type->signature = cu_header.signature; |
8270 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8271 | this_cu = &sig_type->per_cu; | |
8272 | } | |
8273 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8274 | this_cu->sect_off = sect_off; |
f1902523 | 8275 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8276 | this_cu->is_dwz = is_dwz; |
8a0459fd | 8277 | this_cu->section = section; |
ae038cb0 | 8278 | |
976ca316 | 8279 | per_objfile->per_bfd->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8280 | |
8281 | info_ptr = info_ptr + this_cu->length; | |
8282 | } | |
36586728 TT |
8283 | } |
8284 | ||
8285 | /* Create a list of all compilation units in OBJFILE. | |
8286 | This is only done for -readnow and building partial symtabs. */ | |
8287 | ||
8288 | static void | |
976ca316 | 8289 | create_all_comp_units (dwarf2_per_objfile *per_objfile) |
36586728 | 8290 | { |
976ca316 SM |
8291 | gdb_assert (per_objfile->per_bfd->all_comp_units.empty ()); |
8292 | read_comp_units_from_section (per_objfile, &per_objfile->per_bfd->info, | |
8293 | &per_objfile->per_bfd->abbrev, 0); | |
36586728 | 8294 | |
976ca316 | 8295 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
4db1a1dc | 8296 | if (dwz != NULL) |
976ca316 | 8297 | read_comp_units_from_section (per_objfile, &dwz->info, &dwz->abbrev, 1); |
c906108c SS |
8298 | } |
8299 | ||
5734ee8b | 8300 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8301 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8302 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8303 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8304 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8305 | |
72bf9492 DJ |
8306 | static void |
8307 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8308 | CORE_ADDR *highpc, int set_addrmap, |
8309 | struct dwarf2_cu *cu) | |
c906108c | 8310 | { |
72bf9492 | 8311 | struct partial_die_info *pdi; |
c906108c | 8312 | |
91c24f0a DC |
8313 | /* Now, march along the PDI's, descending into ones which have |
8314 | interesting children but skipping the children of the other ones, | |
8315 | until we reach the end of the compilation unit. */ | |
c906108c | 8316 | |
72bf9492 | 8317 | pdi = first_die; |
91c24f0a | 8318 | |
72bf9492 DJ |
8319 | while (pdi != NULL) |
8320 | { | |
52356b79 | 8321 | pdi->fixup (cu); |
c906108c | 8322 | |
f55ee35c | 8323 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8324 | children, so we need to look at them. Ditto for anonymous |
8325 | enums. */ | |
933c6fe4 | 8326 | |
7d00ffec | 8327 | if (pdi->raw_name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8328 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8329 | || pdi->tag == DW_TAG_imported_unit |
8330 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8331 | { |
72bf9492 | 8332 | switch (pdi->tag) |
c906108c SS |
8333 | { |
8334 | case DW_TAG_subprogram: | |
b1dc1806 | 8335 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8336 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
f9b5d5ea TV |
8337 | if (cu->language == language_cplus) |
8338 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
8339 | set_addrmap, cu); | |
c906108c | 8340 | break; |
72929c62 | 8341 | case DW_TAG_constant: |
c906108c SS |
8342 | case DW_TAG_variable: |
8343 | case DW_TAG_typedef: | |
91c24f0a | 8344 | case DW_TAG_union_type: |
317d2668 TV |
8345 | if (!pdi->is_declaration |
8346 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 8347 | { |
72bf9492 | 8348 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8349 | } |
8350 | break; | |
c906108c | 8351 | case DW_TAG_class_type: |
680b30c7 | 8352 | case DW_TAG_interface_type: |
c906108c | 8353 | case DW_TAG_structure_type: |
72bf9492 | 8354 | if (!pdi->is_declaration) |
c906108c | 8355 | { |
72bf9492 | 8356 | add_partial_symbol (pdi, cu); |
c906108c | 8357 | } |
b7fee5a3 KS |
8358 | if ((cu->language == language_rust |
8359 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8360 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8361 | set_addrmap, cu); | |
c906108c | 8362 | break; |
91c24f0a | 8363 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8364 | if (!pdi->is_declaration) |
8365 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8366 | break; |
8367 | case DW_TAG_base_type: | |
dda83cd7 | 8368 | case DW_TAG_subrange_type: |
c906108c | 8369 | /* File scope base type definitions are added to the partial |
dda83cd7 | 8370 | symbol table. */ |
72bf9492 | 8371 | add_partial_symbol (pdi, cu); |
c906108c | 8372 | break; |
d9fa45fe | 8373 | case DW_TAG_namespace: |
cdc07690 | 8374 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8375 | break; |
5d7cb8df | 8376 | case DW_TAG_module: |
59c35742 AB |
8377 | if (!pdi->is_declaration) |
8378 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8379 | break; |
95554aad TT |
8380 | case DW_TAG_imported_unit: |
8381 | { | |
8382 | struct dwarf2_per_cu_data *per_cu; | |
8383 | ||
f4dc4d17 DE |
8384 | /* For now we don't handle imported units in type units. */ |
8385 | if (cu->per_cu->is_debug_types) | |
8386 | { | |
8387 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8388 | " supported in type units [in module %s]"), | |
5e22e966 | 8389 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
8390 | } |
8391 | ||
e3b94546 | 8392 | per_cu = dwarf2_find_containing_comp_unit |
5e22e966 | 8393 | (pdi->d.sect_off, pdi->is_dwz, cu->per_objfile); |
95554aad TT |
8394 | |
8395 | /* Go read the partial unit, if needed. */ | |
8396 | if (per_cu->v.psymtab == NULL) | |
ab432490 SM |
8397 | process_psymtab_comp_unit (per_cu, cu->per_objfile, true, |
8398 | cu->language); | |
95554aad | 8399 | |
ae640021 | 8400 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8401 | } |
8402 | break; | |
74921315 KS |
8403 | case DW_TAG_imported_declaration: |
8404 | add_partial_symbol (pdi, cu); | |
8405 | break; | |
c906108c SS |
8406 | default: |
8407 | break; | |
8408 | } | |
8409 | } | |
8410 | ||
72bf9492 DJ |
8411 | /* If the die has a sibling, skip to the sibling. */ |
8412 | ||
8413 | pdi = pdi->die_sibling; | |
8414 | } | |
8415 | } | |
8416 | ||
8417 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8418 | |
72bf9492 | 8419 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8420 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8421 | Enumerators are an exception; they use the scope of their parent |
8422 | enumeration type, i.e. the name of the enumeration type is not | |
8423 | prepended to the enumerator. | |
91c24f0a | 8424 | |
72bf9492 DJ |
8425 | There are two complexities. One is DW_AT_specification; in this |
8426 | case "parent" means the parent of the target of the specification, | |
8427 | instead of the direct parent of the DIE. The other is compilers | |
8428 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8429 | the fully qualified name of structure types from their members' | |
8430 | linkage names. This must be done using the DIE's children rather | |
8431 | than the children of any DW_AT_specification target. We only need | |
8432 | to do this for structures at the top level, i.e. if the target of | |
8433 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8434 | have a parent. */ | |
8435 | ||
8436 | /* Compute the scope prefix associated with PDI's parent, in | |
8437 | compilation unit CU. The result will be allocated on CU's | |
8438 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8439 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8440 | static const char * |
72bf9492 DJ |
8441 | partial_die_parent_scope (struct partial_die_info *pdi, |
8442 | struct dwarf2_cu *cu) | |
8443 | { | |
15d034d0 | 8444 | const char *grandparent_scope; |
72bf9492 | 8445 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8446 | |
72bf9492 DJ |
8447 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8448 | then this means the parent of the specification DIE. */ | |
8449 | ||
8450 | real_pdi = pdi; | |
72bf9492 | 8451 | while (real_pdi->has_specification) |
fb816e8b | 8452 | { |
122cf0f2 AB |
8453 | auto res = find_partial_die (real_pdi->spec_offset, |
8454 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8455 | real_pdi = res.pdi; |
8456 | cu = res.cu; | |
8457 | } | |
72bf9492 DJ |
8458 | |
8459 | parent = real_pdi->die_parent; | |
8460 | if (parent == NULL) | |
8461 | return NULL; | |
8462 | ||
8463 | if (parent->scope_set) | |
8464 | return parent->scope; | |
8465 | ||
52356b79 | 8466 | parent->fixup (cu); |
72bf9492 | 8467 | |
10b3939b | 8468 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8469 | |
acebe513 UW |
8470 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8471 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8472 | Work around this problem here. */ | |
8473 | if (cu->language == language_cplus | |
6e70227d | 8474 | && parent->tag == DW_TAG_namespace |
7d00ffec | 8475 | && strcmp (parent->name (cu), "::") == 0 |
acebe513 UW |
8476 | && grandparent_scope == NULL) |
8477 | { | |
8478 | parent->scope = NULL; | |
8479 | parent->scope_set = 1; | |
8480 | return NULL; | |
8481 | } | |
8482 | ||
0a4b0913 | 8483 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8484 | if (pdi->tag == DW_TAG_enumerator) |
8485 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8486 | parent->scope = grandparent_scope; | |
8487 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8488 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8489 | || parent->tag == DW_TAG_structure_type |
8490 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8491 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8492 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8493 | || parent->tag == DW_TAG_enumeration_type |
8494 | || (cu->language == language_fortran | |
8495 | && parent->tag == DW_TAG_subprogram | |
8496 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8497 | { |
8498 | if (grandparent_scope == NULL) | |
7d00ffec | 8499 | parent->scope = parent->name (cu); |
72bf9492 | 8500 | else |
3e43a32a MS |
8501 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8502 | grandparent_scope, | |
7d00ffec | 8503 | parent->name (cu), 0, cu); |
72bf9492 | 8504 | } |
72bf9492 DJ |
8505 | else |
8506 | { | |
8507 | /* FIXME drow/2004-04-01: What should we be doing with | |
8508 | function-local names? For partial symbols, we should probably be | |
8509 | ignoring them. */ | |
fa9c3fa0 TT |
8510 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8511 | dwarf_tag_name (parent->tag), | |
8512 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8513 | parent->scope = grandparent_scope; |
c906108c SS |
8514 | } |
8515 | ||
72bf9492 DJ |
8516 | parent->scope_set = 1; |
8517 | return parent->scope; | |
8518 | } | |
8519 | ||
8520 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8521 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8522 | |
43816ebc | 8523 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8524 | partial_die_full_name (struct partial_die_info *pdi, |
8525 | struct dwarf2_cu *cu) | |
8526 | { | |
15d034d0 | 8527 | const char *parent_scope; |
72bf9492 | 8528 | |
98bfdba5 PA |
8529 | /* If this is a template instantiation, we can not work out the |
8530 | template arguments from partial DIEs. So, unfortunately, we have | |
8531 | to go through the full DIEs. At least any work we do building | |
8532 | types here will be reused if full symbols are loaded later. */ | |
8533 | if (pdi->has_template_arguments) | |
8534 | { | |
52356b79 | 8535 | pdi->fixup (cu); |
98bfdba5 | 8536 | |
7d00ffec | 8537 | if (pdi->name (cu) != NULL && strchr (pdi->name (cu), '<') == NULL) |
98bfdba5 PA |
8538 | { |
8539 | struct die_info *die; | |
8540 | struct attribute attr; | |
8541 | struct dwarf2_cu *ref_cu = cu; | |
8542 | ||
b64f50a1 | 8543 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8544 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8545 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8546 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8547 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8548 | ||
43816ebc | 8549 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8550 | } |
8551 | } | |
8552 | ||
72bf9492 DJ |
8553 | parent_scope = partial_die_parent_scope (pdi, cu); |
8554 | if (parent_scope == NULL) | |
8555 | return NULL; | |
8556 | else | |
43816ebc | 8557 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
7d00ffec TT |
8558 | pdi->name (cu), |
8559 | 0, cu)); | |
c906108c SS |
8560 | } |
8561 | ||
8562 | static void | |
72bf9492 | 8563 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8564 | { |
976ca316 SM |
8565 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
8566 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 8567 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8568 | CORE_ADDR addr = 0; |
15d034d0 | 8569 | const char *actual_name = NULL; |
e142c38c DJ |
8570 | CORE_ADDR baseaddr; |
8571 | ||
b3b3bada | 8572 | baseaddr = objfile->text_section_offset (); |
c906108c | 8573 | |
43816ebc TT |
8574 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8575 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8576 | if (built_actual_name != NULL) |
43816ebc | 8577 | actual_name = built_actual_name.get (); |
63d06c5c | 8578 | |
72bf9492 | 8579 | if (actual_name == NULL) |
7d00ffec | 8580 | actual_name = pdi->name (cu); |
72bf9492 | 8581 | |
76e288d1 TT |
8582 | partial_symbol psymbol; |
8583 | memset (&psymbol, 0, sizeof (psymbol)); | |
8584 | psymbol.ginfo.set_language (cu->language, &objfile->objfile_obstack); | |
8585 | psymbol.ginfo.section = -1; | |
8586 | ||
8587 | /* The code below indicates that the psymbol should be installed by | |
8588 | setting this. */ | |
8589 | gdb::optional<psymbol_placement> where; | |
8590 | ||
c906108c SS |
8591 | switch (pdi->tag) |
8592 | { | |
b1dc1806 | 8593 | case DW_TAG_inlined_subroutine: |
c906108c | 8594 | case DW_TAG_subprogram: |
79748972 TT |
8595 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8596 | - baseaddr); | |
0a4b0913 AB |
8597 | if (pdi->is_external |
8598 | || cu->language == language_ada | |
8599 | || (cu->language == language_fortran | |
8600 | && pdi->die_parent != NULL | |
8601 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8602 | { | |
dda83cd7 SM |
8603 | /* Normally, only "external" DIEs are part of the global scope. |
8604 | But in Ada and Fortran, we want to be able to access nested | |
8605 | procedures globally. So all Ada and Fortran subprograms are | |
8606 | stored in the global scope. */ | |
76e288d1 | 8607 | where = psymbol_placement::GLOBAL; |
c906108c SS |
8608 | } |
8609 | else | |
76e288d1 TT |
8610 | where = psymbol_placement::STATIC; |
8611 | ||
8612 | psymbol.domain = VAR_DOMAIN; | |
8613 | psymbol.aclass = LOC_BLOCK; | |
8614 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8615 | psymbol.ginfo.value.address = addr; | |
0c1b455e TT |
8616 | |
8617 | if (pdi->main_subprogram && actual_name != NULL) | |
8618 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8619 | break; |
72929c62 | 8620 | case DW_TAG_constant: |
76e288d1 TT |
8621 | psymbol.domain = VAR_DOMAIN; |
8622 | psymbol.aclass = LOC_STATIC; | |
8623 | where = (pdi->is_external | |
8624 | ? psymbol_placement::GLOBAL | |
8625 | : psymbol_placement::STATIC); | |
72929c62 | 8626 | break; |
c906108c | 8627 | case DW_TAG_variable: |
95554aad TT |
8628 | if (pdi->d.locdesc) |
8629 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8630 | |
95554aad | 8631 | if (pdi->d.locdesc |
caac4577 | 8632 | && addr == 0 |
976ca316 | 8633 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
8634 | { |
8635 | /* A global or static variable may also have been stripped | |
8636 | out by the linker if unused, in which case its address | |
8637 | will be nullified; do not add such variables into partial | |
8638 | symbol table then. */ | |
8639 | } | |
8640 | else if (pdi->is_external) | |
c906108c SS |
8641 | { |
8642 | /* Global Variable. | |
8643 | Don't enter into the minimal symbol tables as there is | |
8644 | a minimal symbol table entry from the ELF symbols already. | |
8645 | Enter into partial symbol table if it has a location | |
8646 | descriptor or a type. | |
8647 | If the location descriptor is missing, new_symbol will create | |
8648 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8649 | be determined from the minimal symbol table whenever the variable | |
8650 | is referenced. | |
8651 | The address for the partial symbol table entry is not | |
8652 | used by GDB, but it comes in handy for debugging partial symbol | |
8653 | table building. */ | |
8654 | ||
95554aad | 8655 | if (pdi->d.locdesc || pdi->has_type) |
76e288d1 TT |
8656 | { |
8657 | psymbol.domain = VAR_DOMAIN; | |
8658 | psymbol.aclass = LOC_STATIC; | |
8659 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8660 | psymbol.ginfo.value.address = addr; | |
8661 | where = psymbol_placement::GLOBAL; | |
8662 | } | |
c906108c SS |
8663 | } |
8664 | else | |
8665 | { | |
ff908ebf AW |
8666 | int has_loc = pdi->d.locdesc != NULL; |
8667 | ||
8668 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8669 | without location descriptors or constant values). */ | |
8670 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8671 | return; |
ff908ebf | 8672 | |
76e288d1 TT |
8673 | psymbol.domain = VAR_DOMAIN; |
8674 | psymbol.aclass = LOC_STATIC; | |
8675 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8676 | if (has_loc) | |
8677 | psymbol.ginfo.value.address = addr; | |
8678 | where = psymbol_placement::STATIC; | |
c906108c SS |
8679 | } |
8680 | break; | |
d8f62e84 | 8681 | case DW_TAG_array_type: |
c906108c SS |
8682 | case DW_TAG_typedef: |
8683 | case DW_TAG_base_type: | |
a02abb62 | 8684 | case DW_TAG_subrange_type: |
76e288d1 TT |
8685 | psymbol.domain = VAR_DOMAIN; |
8686 | psymbol.aclass = LOC_TYPEDEF; | |
8687 | where = psymbol_placement::STATIC; | |
c906108c | 8688 | break; |
74921315 | 8689 | case DW_TAG_imported_declaration: |
72bf9492 | 8690 | case DW_TAG_namespace: |
76e288d1 TT |
8691 | psymbol.domain = VAR_DOMAIN; |
8692 | psymbol.aclass = LOC_TYPEDEF; | |
8693 | where = psymbol_placement::GLOBAL; | |
72bf9492 | 8694 | break; |
530e8392 | 8695 | case DW_TAG_module: |
a5fd13a9 | 8696 | /* With Fortran 77 there might be a "BLOCK DATA" module |
dda83cd7 SM |
8697 | available without any name. If so, we skip the module as it |
8698 | doesn't bring any value. */ | |
a5fd13a9 | 8699 | if (actual_name != nullptr) |
76e288d1 TT |
8700 | { |
8701 | psymbol.domain = MODULE_DOMAIN; | |
8702 | psymbol.aclass = LOC_TYPEDEF; | |
8703 | where = psymbol_placement::GLOBAL; | |
8704 | } | |
530e8392 | 8705 | break; |
c906108c | 8706 | case DW_TAG_class_type: |
680b30c7 | 8707 | case DW_TAG_interface_type: |
c906108c SS |
8708 | case DW_TAG_structure_type: |
8709 | case DW_TAG_union_type: | |
8710 | case DW_TAG_enumeration_type: | |
fa4028e9 | 8711 | /* Skip external references. The DWARF standard says in the section |
dda83cd7 SM |
8712 | about "Structure, Union, and Class Type Entries": "An incomplete |
8713 | structure, union or class type is represented by a structure, | |
8714 | union or class entry that does not have a byte size attribute | |
8715 | and that has a DW_AT_declaration attribute." */ | |
fa4028e9 | 8716 | if (!pdi->has_byte_size && pdi->is_declaration) |
43816ebc | 8717 | return; |
fa4028e9 | 8718 | |
63d06c5c DC |
8719 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8720 | static vs. global. */ | |
76e288d1 TT |
8721 | psymbol.domain = STRUCT_DOMAIN; |
8722 | psymbol.aclass = LOC_TYPEDEF; | |
8723 | where = (cu->language == language_cplus | |
8724 | ? psymbol_placement::GLOBAL | |
8725 | : psymbol_placement::STATIC); | |
c906108c SS |
8726 | break; |
8727 | case DW_TAG_enumerator: | |
76e288d1 TT |
8728 | psymbol.domain = VAR_DOMAIN; |
8729 | psymbol.aclass = LOC_CONST; | |
8730 | where = (cu->language == language_cplus | |
8731 | ? psymbol_placement::GLOBAL | |
8732 | : psymbol_placement::STATIC); | |
c906108c SS |
8733 | break; |
8734 | default: | |
8735 | break; | |
8736 | } | |
76e288d1 TT |
8737 | |
8738 | if (where.has_value ()) | |
8739 | { | |
f049a313 TT |
8740 | if (built_actual_name != nullptr) |
8741 | actual_name = objfile->intern (actual_name); | |
bcfe6157 TT |
8742 | if (pdi->linkage_name == nullptr || cu->language == language_ada) |
8743 | psymbol.ginfo.set_linkage_name (actual_name); | |
8744 | else | |
8745 | { | |
8746 | psymbol.ginfo.set_demangled_name (actual_name, | |
8747 | &objfile->objfile_obstack); | |
8748 | psymbol.ginfo.set_linkage_name (pdi->linkage_name); | |
8749 | } | |
932539d7 | 8750 | cu->per_cu->v.psymtab->add_psymbol (psymbol, *where, objfile); |
76e288d1 | 8751 | } |
c906108c SS |
8752 | } |
8753 | ||
5c4e30ca DC |
8754 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8755 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8756 | the name of the enclosing namespace. */ | |
91c24f0a | 8757 | |
72bf9492 DJ |
8758 | static void |
8759 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8760 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8761 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8762 | { |
72bf9492 | 8763 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8764 | |
72bf9492 | 8765 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8766 | |
8767 | /* Now scan partial symbols in that namespace. */ | |
8768 | ||
91c24f0a | 8769 | if (pdi->has_children) |
cdc07690 | 8770 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8771 | } |
8772 | ||
5d7cb8df JK |
8773 | /* Read a partial die corresponding to a Fortran module. */ |
8774 | ||
8775 | static void | |
8776 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8777 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8778 | { |
530e8392 KB |
8779 | /* Add a symbol for the namespace. */ |
8780 | ||
8781 | add_partial_symbol (pdi, cu); | |
8782 | ||
f55ee35c | 8783 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8784 | |
8785 | if (pdi->has_children) | |
cdc07690 | 8786 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8787 | } |
8788 | ||
b1dc1806 XR |
8789 | /* Read a partial die corresponding to a subprogram or an inlined |
8790 | subprogram and create a partial symbol for that subprogram. | |
8791 | When the CU language allows it, this routine also defines a partial | |
8792 | symbol for each nested subprogram that this subprogram contains. | |
8793 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8794 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8795 | |
cdc07690 YQ |
8796 | PDI may also be a lexical block, in which case we simply search |
8797 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8798 | Again, this is only performed when the CU language allows this |
8799 | type of definitions. */ | |
8800 | ||
8801 | static void | |
8802 | add_partial_subprogram (struct partial_die_info *pdi, | |
8803 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8804 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8805 | { |
b1dc1806 | 8806 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8807 | { |
8808 | if (pdi->has_pc_info) | |
dda83cd7 SM |
8809 | { |
8810 | if (pdi->lowpc < *lowpc) | |
8811 | *lowpc = pdi->lowpc; | |
8812 | if (pdi->highpc > *highpc) | |
8813 | *highpc = pdi->highpc; | |
cdc07690 | 8814 | if (set_addrmap) |
5734ee8b | 8815 | { |
5e22e966 | 8816 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 8817 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8818 | CORE_ADDR baseaddr; |
b926417a TT |
8819 | CORE_ADDR this_highpc; |
8820 | CORE_ADDR this_lowpc; | |
5734ee8b | 8821 | |
b3b3bada | 8822 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8823 | this_lowpc |
8824 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8825 | pdi->lowpc + baseaddr) | |
8826 | - baseaddr); | |
8827 | this_highpc | |
8828 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8829 | pdi->highpc + baseaddr) | |
8830 | - baseaddr); | |
d320c2b5 | 8831 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8832 | this_lowpc, this_highpc - 1, |
9291a0cd | 8833 | cu->per_cu->v.psymtab); |
5734ee8b | 8834 | } |
dda83cd7 | 8835 | } |
481860b3 GB |
8836 | |
8837 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8838 | { | |
dda83cd7 | 8839 | if (!pdi->is_declaration) |
e8d05480 JB |
8840 | /* Ignore subprogram DIEs that do not have a name, they are |
8841 | illegal. Do not emit a complaint at this point, we will | |
8842 | do so when we convert this psymtab into a symtab. */ | |
7d00ffec | 8843 | if (pdi->name (cu)) |
e8d05480 | 8844 | add_partial_symbol (pdi, cu); |
dda83cd7 | 8845 | } |
bc30ff58 | 8846 | } |
6e70227d | 8847 | |
bc30ff58 JB |
8848 | if (! pdi->has_children) |
8849 | return; | |
8850 | ||
0a4b0913 | 8851 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8852 | { |
8853 | pdi = pdi->die_child; | |
8854 | while (pdi != NULL) | |
8855 | { | |
52356b79 | 8856 | pdi->fixup (cu); |
bc30ff58 | 8857 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8858 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8859 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8860 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8861 | pdi = pdi->die_sibling; |
8862 | } | |
8863 | } | |
8864 | } | |
8865 | ||
91c24f0a DC |
8866 | /* Read a partial die corresponding to an enumeration type. */ |
8867 | ||
72bf9492 DJ |
8868 | static void |
8869 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8870 | struct dwarf2_cu *cu) | |
91c24f0a | 8871 | { |
72bf9492 | 8872 | struct partial_die_info *pdi; |
91c24f0a | 8873 | |
7d00ffec | 8874 | if (enum_pdi->name (cu) != NULL) |
72bf9492 DJ |
8875 | add_partial_symbol (enum_pdi, cu); |
8876 | ||
8877 | pdi = enum_pdi->die_child; | |
8878 | while (pdi) | |
91c24f0a | 8879 | { |
7d00ffec | 8880 | if (pdi->tag != DW_TAG_enumerator || pdi->raw_name == NULL) |
b98664d3 | 8881 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8882 | else |
72bf9492 DJ |
8883 | add_partial_symbol (pdi, cu); |
8884 | pdi = pdi->die_sibling; | |
91c24f0a | 8885 | } |
91c24f0a DC |
8886 | } |
8887 | ||
6caca83c CC |
8888 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8889 | ||
8890 | static unsigned int | |
d521ce57 | 8891 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8892 | { |
8893 | unsigned int bytes_read; | |
8894 | ||
8895 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8896 | } | |
8897 | ||
685af9cd TT |
8898 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8899 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8900 | ||
4bb7a0a7 DJ |
8901 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8902 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8903 | the initial number. */ | |
8904 | ||
8905 | static struct abbrev_info * | |
685af9cd TT |
8906 | peek_die_abbrev (const die_reader_specs &reader, |
8907 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8908 | { |
685af9cd | 8909 | dwarf2_cu *cu = reader.cu; |
5e22e966 | 8910 | bfd *abfd = cu->per_objfile->objfile->obfd; |
685af9cd TT |
8911 | unsigned int abbrev_number |
8912 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8913 | |
8914 | if (abbrev_number == 0) | |
8915 | return NULL; | |
8916 | ||
685af9cd | 8917 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8918 | if (!abbrev) |
8919 | { | |
422b9917 | 8920 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8921 | " at offset %s [in module %s]"), |
422b9917 | 8922 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8923 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8924 | } |
8925 | ||
8926 | return abbrev; | |
8927 | } | |
8928 | ||
93311388 DE |
8929 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8930 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8931 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8932 | ||
d521ce57 TT |
8933 | static const gdb_byte * |
8934 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8935 | { |
4bb7a0a7 DJ |
8936 | while (1) |
8937 | { | |
685af9cd TT |
8938 | unsigned int bytes_read; |
8939 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8940 | ||
4bb7a0a7 DJ |
8941 | if (abbrev == NULL) |
8942 | return info_ptr + bytes_read; | |
8943 | else | |
dee91e82 | 8944 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8945 | } |
8946 | } | |
8947 | ||
93311388 DE |
8948 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8949 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8950 | abbrev corresponding to that skipped uleb128 should be passed in |
8951 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8952 | children. */ | |
8953 | ||
d521ce57 TT |
8954 | static const gdb_byte * |
8955 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8956 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8957 | { |
8958 | unsigned int bytes_read; | |
8959 | struct attribute attr; | |
dee91e82 DE |
8960 | bfd *abfd = reader->abfd; |
8961 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8962 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8963 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8964 | unsigned int form, i; |
8965 | ||
8966 | for (i = 0; i < abbrev->num_attrs; i++) | |
8967 | { | |
8968 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8969 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8970 | { | |
7a5f294d | 8971 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 8972 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8973 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8974 | else |
b9502d3f | 8975 | { |
0826b30a | 8976 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8977 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8978 | |
8979 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8980 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8981 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8982 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8983 | else |
8984 | return sibling_ptr; | |
8985 | } | |
4bb7a0a7 DJ |
8986 | } |
8987 | ||
8988 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8989 | form = abbrev->attrs[i].form; | |
8990 | skip_attribute: | |
8991 | switch (form) | |
8992 | { | |
4bb7a0a7 | 8993 | case DW_FORM_ref_addr: |
ae411497 TT |
8994 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8995 | and later it is offset sized. */ | |
8996 | if (cu->header.version == 2) | |
8997 | info_ptr += cu->header.addr_size; | |
8998 | else | |
8999 | info_ptr += cu->header.offset_size; | |
9000 | break; | |
36586728 TT |
9001 | case DW_FORM_GNU_ref_alt: |
9002 | info_ptr += cu->header.offset_size; | |
9003 | break; | |
ae411497 | 9004 | case DW_FORM_addr: |
4bb7a0a7 DJ |
9005 | info_ptr += cu->header.addr_size; |
9006 | break; | |
9007 | case DW_FORM_data1: | |
9008 | case DW_FORM_ref1: | |
9009 | case DW_FORM_flag: | |
8fe0f950 | 9010 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
9011 | info_ptr += 1; |
9012 | break; | |
2dc7f7b3 | 9013 | case DW_FORM_flag_present: |
43988095 | 9014 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9015 | break; |
4bb7a0a7 DJ |
9016 | case DW_FORM_data2: |
9017 | case DW_FORM_ref2: | |
8fe0f950 | 9018 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
9019 | info_ptr += 2; |
9020 | break; | |
8fe0f950 AT |
9021 | case DW_FORM_strx3: |
9022 | info_ptr += 3; | |
9023 | break; | |
4bb7a0a7 DJ |
9024 | case DW_FORM_data4: |
9025 | case DW_FORM_ref4: | |
8fe0f950 | 9026 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
9027 | info_ptr += 4; |
9028 | break; | |
9029 | case DW_FORM_data8: | |
9030 | case DW_FORM_ref8: | |
55f1336d | 9031 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9032 | info_ptr += 8; |
9033 | break; | |
0224619f JK |
9034 | case DW_FORM_data16: |
9035 | info_ptr += 16; | |
9036 | break; | |
4bb7a0a7 | 9037 | case DW_FORM_string: |
9b1c24c8 | 9038 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9039 | info_ptr += bytes_read; |
9040 | break; | |
2dc7f7b3 | 9041 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9042 | case DW_FORM_strp: |
36586728 | 9043 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9044 | info_ptr += cu->header.offset_size; |
9045 | break; | |
2dc7f7b3 | 9046 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9047 | case DW_FORM_block: |
9048 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9049 | info_ptr += bytes_read; | |
9050 | break; | |
9051 | case DW_FORM_block1: | |
9052 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9053 | break; | |
9054 | case DW_FORM_block2: | |
9055 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9056 | break; | |
9057 | case DW_FORM_block4: | |
9058 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9059 | break; | |
336d760d | 9060 | case DW_FORM_addrx: |
cf532bd1 | 9061 | case DW_FORM_strx: |
4bb7a0a7 DJ |
9062 | case DW_FORM_sdata: |
9063 | case DW_FORM_udata: | |
9064 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9065 | case DW_FORM_GNU_addr_index: |
9066 | case DW_FORM_GNU_str_index: | |
18a8505e | 9067 | case DW_FORM_rnglistx: |
41144253 | 9068 | case DW_FORM_loclistx: |
d521ce57 | 9069 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9070 | break; |
9071 | case DW_FORM_indirect: | |
9072 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9073 | info_ptr += bytes_read; | |
9074 | /* We need to continue parsing from here, so just go back to | |
9075 | the top. */ | |
9076 | goto skip_attribute; | |
9077 | ||
9078 | default: | |
3e43a32a MS |
9079 | error (_("Dwarf Error: Cannot handle %s " |
9080 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9081 | dwarf_form_name (form), |
9082 | bfd_get_filename (abfd)); | |
9083 | } | |
9084 | } | |
9085 | ||
9086 | if (abbrev->has_children) | |
dee91e82 | 9087 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9088 | else |
9089 | return info_ptr; | |
9090 | } | |
9091 | ||
93311388 | 9092 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9093 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9094 | |
d521ce57 | 9095 | static const gdb_byte * |
dee91e82 DE |
9096 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9097 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9098 | const gdb_byte *info_ptr) |
91c24f0a DC |
9099 | { |
9100 | /* Do we know the sibling already? */ | |
72bf9492 | 9101 | |
91c24f0a DC |
9102 | if (orig_pdi->sibling) |
9103 | return orig_pdi->sibling; | |
9104 | ||
9105 | /* Are there any children to deal with? */ | |
9106 | ||
9107 | if (!orig_pdi->has_children) | |
9108 | return info_ptr; | |
9109 | ||
4bb7a0a7 | 9110 | /* Skip the children the long way. */ |
91c24f0a | 9111 | |
dee91e82 | 9112 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9113 | } |
9114 | ||
257e7a09 | 9115 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9116 | not NULL. */ |
c906108c | 9117 | |
891813be TT |
9118 | void |
9119 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 9120 | { |
976ca316 | 9121 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 9122 | |
976ca316 | 9123 | gdb_assert (!per_objfile->symtab_set_p (per_cu_data)); |
af758d11 | 9124 | |
077cbab2 TT |
9125 | /* If this psymtab is constructed from a debug-only objfile, the |
9126 | has_section_at_zero flag will not necessarily be correct. We | |
9127 | can get the correct value for this flag by looking at the data | |
9128 | associated with the (presumably stripped) associated objfile. */ | |
9129 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 9130 | { |
976ca316 | 9131 | dwarf2_per_objfile *per_objfile_backlink |
077cbab2 | 9132 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
c906108c | 9133 | |
976ca316 SM |
9134 | per_objfile->per_bfd->has_section_at_zero |
9135 | = per_objfile_backlink->per_bfd->has_section_at_zero; | |
077cbab2 | 9136 | } |
98bfdba5 | 9137 | |
8566b89b | 9138 | expand_psymtab (objfile); |
95554aad | 9139 | |
976ca316 | 9140 | process_cu_includes (per_objfile); |
c906108c | 9141 | } |
9cdd5dbd DE |
9142 | \f |
9143 | /* Reading in full CUs. */ | |
c906108c | 9144 | |
10b3939b DJ |
9145 | /* Add PER_CU to the queue. */ |
9146 | ||
9147 | static void | |
120ce1b5 SM |
9148 | queue_comp_unit (dwarf2_per_cu_data *per_cu, |
9149 | dwarf2_per_objfile *per_objfile, | |
95554aad | 9150 | enum language pretend_language) |
10b3939b | 9151 | { |
10b3939b | 9152 | per_cu->queued = 1; |
120ce1b5 | 9153 | per_cu->per_bfd->queue.emplace (per_cu, per_objfile, pretend_language); |
10b3939b DJ |
9154 | } |
9155 | ||
89e63ee4 DE |
9156 | /* If PER_CU is not yet queued, add it to the queue. |
9157 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9158 | dependency. | |
0907af0c | 9159 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9160 | meaning either PER_CU is already queued or it is already loaded. |
9161 | ||
9162 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9163 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9164 | |
9165 | static int | |
89e63ee4 | 9166 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
120ce1b5 SM |
9167 | dwarf2_per_cu_data *per_cu, |
9168 | dwarf2_per_objfile *per_objfile, | |
0907af0c DE |
9169 | enum language pretend_language) |
9170 | { | |
9171 | /* We may arrive here during partial symbol reading, if we need full | |
9172 | DIEs to process an unusual case (e.g. template arguments). Do | |
9173 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
1859c670 | 9174 | if (per_cu->per_bfd->reading_partial_symbols) |
0907af0c | 9175 | { |
7188ed02 SM |
9176 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9177 | ||
9178 | if (cu == NULL || cu->dies == NULL) | |
0907af0c DE |
9179 | return 1; |
9180 | return 0; | |
9181 | } | |
9182 | ||
9183 | /* Mark the dependence relation so that we don't flush PER_CU | |
9184 | too early. */ | |
89e63ee4 DE |
9185 | if (dependent_cu != NULL) |
9186 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9187 | |
9188 | /* If it's already on the queue, we have nothing to do. */ | |
9189 | if (per_cu->queued) | |
9190 | return 0; | |
9191 | ||
9192 | /* If the compilation unit is already loaded, just mark it as | |
9193 | used. */ | |
7188ed02 SM |
9194 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9195 | if (cu != nullptr) | |
0907af0c | 9196 | { |
7188ed02 | 9197 | cu->last_used = 0; |
0907af0c DE |
9198 | return 0; |
9199 | } | |
9200 | ||
9201 | /* Add it to the queue. */ | |
120ce1b5 | 9202 | queue_comp_unit (per_cu, per_objfile, pretend_language); |
0907af0c DE |
9203 | |
9204 | return 1; | |
9205 | } | |
9206 | ||
10b3939b DJ |
9207 | /* Process the queue. */ |
9208 | ||
9209 | static void | |
976ca316 | 9210 | process_queue (dwarf2_per_objfile *per_objfile) |
10b3939b | 9211 | { |
6f738b01 SM |
9212 | dwarf_read_debug_printf ("Expanding one or more symtabs of objfile %s ...", |
9213 | objfile_name (per_objfile->objfile)); | |
45cfd468 | 9214 | |
03dd20cc DJ |
9215 | /* The queue starts out with one item, but following a DIE reference |
9216 | may load a new CU, adding it to the end of the queue. */ | |
976ca316 | 9217 | while (!per_objfile->per_bfd->queue.empty ()) |
10b3939b | 9218 | { |
976ca316 | 9219 | dwarf2_queue_item &item = per_objfile->per_bfd->queue.front (); |
7188ed02 | 9220 | dwarf2_per_cu_data *per_cu = item.per_cu; |
39856def | 9221 | |
976ca316 | 9222 | if (!per_objfile->symtab_set_p (per_cu)) |
f4dc4d17 | 9223 | { |
976ca316 | 9224 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
f4dc4d17 | 9225 | |
7188ed02 SM |
9226 | /* Skip dummy CUs. */ |
9227 | if (cu != nullptr) | |
73be47f5 | 9228 | { |
7188ed02 SM |
9229 | unsigned int debug_print_threshold; |
9230 | char buf[100]; | |
9231 | ||
9232 | if (per_cu->is_debug_types) | |
9233 | { | |
9234 | struct signatured_type *sig_type = | |
9235 | (struct signatured_type *) per_cu; | |
9236 | ||
9237 | sprintf (buf, "TU %s at offset %s", | |
9238 | hex_string (sig_type->signature), | |
9239 | sect_offset_str (per_cu->sect_off)); | |
9240 | /* There can be 100s of TUs. | |
9241 | Only print them in verbose mode. */ | |
9242 | debug_print_threshold = 2; | |
9243 | } | |
9244 | else | |
9245 | { | |
9246 | sprintf (buf, "CU at offset %s", | |
9247 | sect_offset_str (per_cu->sect_off)); | |
9248 | debug_print_threshold = 1; | |
9249 | } | |
247f5c4f | 9250 | |
7188ed02 | 9251 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 9252 | dwarf_read_debug_printf ("Expanding symtab of %s", buf); |
f4dc4d17 | 9253 | |
7188ed02 SM |
9254 | if (per_cu->is_debug_types) |
9255 | process_full_type_unit (cu, item.pretend_language); | |
9256 | else | |
9257 | process_full_comp_unit (cu, item.pretend_language); | |
f4dc4d17 | 9258 | |
7188ed02 | 9259 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 9260 | dwarf_read_debug_printf ("Done expanding %s", buf); |
7188ed02 | 9261 | } |
f4dc4d17 | 9262 | } |
10b3939b | 9263 | |
7188ed02 | 9264 | per_cu->queued = 0; |
976ca316 | 9265 | per_objfile->per_bfd->queue.pop (); |
10b3939b DJ |
9266 | } |
9267 | ||
6f738b01 SM |
9268 | dwarf_read_debug_printf ("Done expanding symtabs of %s.", |
9269 | objfile_name (per_objfile->objfile)); | |
10b3939b DJ |
9270 | } |
9271 | ||
10b3939b DJ |
9272 | /* Read in full symbols for PST, and anything it depends on. */ |
9273 | ||
8566b89b TT |
9274 | void |
9275 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9276 | { |
af758d11 | 9277 | gdb_assert (!readin_p (objfile)); |
95554aad | 9278 | |
17ee85fc TT |
9279 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9280 | free_cached_comp_units freer (per_objfile); | |
48993951 | 9281 | expand_dependencies (objfile); |
aaa75496 | 9282 | |
97a1449a | 9283 | dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); |
5717c425 | 9284 | gdb_assert (get_compunit_symtab (objfile) != nullptr); |
10b3939b DJ |
9285 | } |
9286 | ||
af758d11 SM |
9287 | /* See psympriv.h. */ |
9288 | ||
9289 | bool | |
9290 | dwarf2_psymtab::readin_p (struct objfile *objfile) const | |
9291 | { | |
9292 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9293 | return per_objfile->symtab_set_p (per_cu_data); | |
9294 | } | |
9295 | ||
9296 | /* See psympriv.h. */ | |
9297 | ||
9298 | compunit_symtab * | |
9299 | dwarf2_psymtab::get_compunit_symtab (struct objfile *objfile) const | |
9300 | { | |
9301 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9302 | return per_objfile->get_symtab (per_cu_data); | |
9303 | } | |
9304 | ||
dee91e82 DE |
9305 | /* Trivial hash function for die_info: the hash value of a DIE |
9306 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9307 | |
dee91e82 DE |
9308 | static hashval_t |
9309 | die_hash (const void *item) | |
10b3939b | 9310 | { |
9a3c8263 | 9311 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9312 | |
9c541725 | 9313 | return to_underlying (die->sect_off); |
dee91e82 | 9314 | } |
63d06c5c | 9315 | |
dee91e82 DE |
9316 | /* Trivial comparison function for die_info structures: two DIEs |
9317 | are equal if they have the same offset. */ | |
98bfdba5 | 9318 | |
dee91e82 DE |
9319 | static int |
9320 | die_eq (const void *item_lhs, const void *item_rhs) | |
9321 | { | |
9a3c8263 SM |
9322 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9323 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9324 | |
9c541725 | 9325 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9326 | } |
c906108c | 9327 | |
4a636814 SM |
9328 | /* Load the DIEs associated with PER_CU into memory. |
9329 | ||
9330 | In some cases, the caller, while reading partial symbols, will need to load | |
9331 | the full symbols for the CU for some reason. It will already have a | |
9332 | dwarf2_cu object for THIS_CU and pass it as EXISTING_CU, so it can be re-used | |
9333 | rather than creating a new one. */ | |
c906108c | 9334 | |
dee91e82 | 9335 | static void |
ab432490 SM |
9336 | load_full_comp_unit (dwarf2_per_cu_data *this_cu, |
9337 | dwarf2_per_objfile *per_objfile, | |
4a636814 | 9338 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
9339 | bool skip_partial, |
9340 | enum language pretend_language) | |
dee91e82 | 9341 | { |
c0ab21c2 TT |
9342 | gdb_assert (! this_cu->is_debug_types); |
9343 | ||
7188ed02 | 9344 | cutu_reader reader (this_cu, per_objfile, NULL, existing_cu, skip_partial); |
c0ab21c2 TT |
9345 | if (reader.dummy_p) |
9346 | return; | |
9347 | ||
9348 | struct dwarf2_cu *cu = reader.cu; | |
9349 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9350 | |
dee91e82 DE |
9351 | gdb_assert (cu->die_hash == NULL); |
9352 | cu->die_hash = | |
9353 | htab_create_alloc_ex (cu->header.length / 12, | |
9354 | die_hash, | |
9355 | die_eq, | |
9356 | NULL, | |
9357 | &cu->comp_unit_obstack, | |
9358 | hashtab_obstack_allocate, | |
9359 | dummy_obstack_deallocate); | |
e142c38c | 9360 | |
3e225074 | 9361 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
9362 | reader.comp_unit_die->child |
9363 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9364 | &info_ptr, reader.comp_unit_die); | |
9365 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9366 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9367 | |
9368 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9369 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9370 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9371 | or we won't be able to build types correctly. |
9372 | Similarly, if we do not read the producer, we can not apply | |
9373 | producer-specific interpretation. */ | |
c0ab21c2 | 9374 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
9375 | |
9376 | reader.keep (); | |
10b3939b DJ |
9377 | } |
9378 | ||
3da10d80 KS |
9379 | /* Add a DIE to the delayed physname list. */ |
9380 | ||
9381 | static void | |
9382 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9383 | const char *name, struct die_info *die, | |
9384 | struct dwarf2_cu *cu) | |
9385 | { | |
9386 | struct delayed_method_info mi; | |
9387 | mi.type = type; | |
9388 | mi.fnfield_index = fnfield_index; | |
9389 | mi.index = index; | |
9390 | mi.name = name; | |
9391 | mi.die = die; | |
c89b44cd | 9392 | cu->method_list.push_back (mi); |
3da10d80 KS |
9393 | } |
9394 | ||
3693fdb3 PA |
9395 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9396 | "const" / "volatile". If so, decrements LEN by the length of the | |
9397 | modifier and return true. Otherwise return false. */ | |
9398 | ||
9399 | template<size_t N> | |
9400 | static bool | |
9401 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9402 | { | |
9403 | size_t mod_len = sizeof (mod) - 1; | |
9404 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9405 | { | |
9406 | len -= mod_len; | |
9407 | return true; | |
9408 | } | |
9409 | return false; | |
9410 | } | |
9411 | ||
3da10d80 KS |
9412 | /* Compute the physnames of any methods on the CU's method list. |
9413 | ||
9414 | The computation of method physnames is delayed in order to avoid the | |
9415 | (bad) condition that one of the method's formal parameters is of an as yet | |
9416 | incomplete type. */ | |
9417 | ||
9418 | static void | |
9419 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9420 | { | |
3693fdb3 | 9421 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9422 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9423 | return; |
9424 | gdb_assert (cu->language == language_cplus); | |
9425 | ||
52941706 | 9426 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9427 | { |
1d06ead6 | 9428 | const char *physname; |
3da10d80 | 9429 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9430 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9431 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9432 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9433 | = physname ? physname : ""; |
3693fdb3 PA |
9434 | |
9435 | /* Since there's no tag to indicate whether a method is a | |
9436 | const/volatile overload, extract that information out of the | |
9437 | demangled name. */ | |
9438 | if (physname != NULL) | |
9439 | { | |
9440 | size_t len = strlen (physname); | |
9441 | ||
9442 | while (1) | |
9443 | { | |
9444 | if (physname[len] == ')') /* shortcut */ | |
9445 | break; | |
9446 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9447 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9448 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9449 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9450 | else |
9451 | break; | |
9452 | } | |
9453 | } | |
3da10d80 | 9454 | } |
c89b44cd TT |
9455 | |
9456 | /* The list is no longer needed. */ | |
9457 | cu->method_list.clear (); | |
3da10d80 KS |
9458 | } |
9459 | ||
a766d390 DE |
9460 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9461 | and it's not clear if/how imported objects will appear. | |
9462 | To keep Go support simple until that's worked out, | |
9463 | go back through what we've read and create something usable. | |
9464 | We could do this while processing each DIE, and feels kinda cleaner, | |
9465 | but that way is more invasive. | |
9466 | This is to, for example, allow the user to type "p var" or "b main" | |
9467 | without having to specify the package name, and allow lookups | |
9468 | of module.object to work in contexts that use the expression | |
9469 | parser. */ | |
9470 | ||
9471 | static void | |
9472 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9473 | { | |
421d1616 | 9474 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9475 | struct pending *list; |
9476 | int i; | |
9477 | ||
c24bdb02 | 9478 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9479 | list != NULL; |
9480 | list = list->next) | |
a766d390 DE |
9481 | { |
9482 | for (i = 0; i < list->nsyms; ++i) | |
9483 | { | |
9484 | struct symbol *sym = list->symbol[i]; | |
9485 | ||
c1b5c1eb | 9486 | if (sym->language () == language_go |
a766d390 DE |
9487 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9488 | { | |
421d1616 TT |
9489 | gdb::unique_xmalloc_ptr<char> this_package_name |
9490 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9491 | |
9492 | if (this_package_name == NULL) | |
9493 | continue; | |
9494 | if (package_name == NULL) | |
421d1616 | 9495 | package_name = std::move (this_package_name); |
a766d390 DE |
9496 | else |
9497 | { | |
5e22e966 | 9498 | struct objfile *objfile = cu->per_objfile->objfile; |
421d1616 | 9499 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9500 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9501 | (symbol_symtab (sym) != NULL |
9502 | ? symtab_to_filename_for_display | |
9503 | (symbol_symtab (sym)) | |
e3b94546 | 9504 | : objfile_name (objfile)), |
421d1616 | 9505 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9506 | } |
9507 | } | |
9508 | } | |
9509 | } | |
9510 | ||
9511 | if (package_name != NULL) | |
9512 | { | |
5e22e966 | 9513 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 9514 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9515 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9516 | saved_package_name); | |
a766d390 DE |
9517 | struct symbol *sym; |
9518 | ||
8c14c3a3 | 9519 | sym = new (&objfile->objfile_obstack) symbol; |
d3ecddab | 9520 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9521 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9522 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9523 | e.g., "main" finds the "main" module and not C's main(). */ | |
9524 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9525 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9526 | SYMBOL_TYPE (sym) = type; |
9527 | ||
c24bdb02 | 9528 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9529 | } |
9530 | } | |
9531 | ||
c9317f21 TT |
9532 | /* Allocate a fully-qualified name consisting of the two parts on the |
9533 | obstack. */ | |
9534 | ||
9535 | static const char * | |
9536 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9537 | { | |
9538 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9539 | } | |
9540 | ||
9c6a1327 TT |
9541 | /* A helper that allocates a variant part to attach to a Rust enum |
9542 | type. OBSTACK is where the results should be allocated. TYPE is | |
9543 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
57d02173 TT |
9544 | discriminant. It must be the index of one of the fields of TYPE, |
9545 | or -1 to mean there is no discriminant (univariant enum). | |
9c6a1327 TT |
9546 | DEFAULT_INDEX is the index of the default field; or -1 if there is |
9547 | no default. RANGES is indexed by "effective" field number (the | |
9548 | field index, but omitting the discriminant and default fields) and | |
9549 | must hold the discriminant values used by the variants. Note that | |
9550 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9551 | already allocated on it, or static. */ | |
c9317f21 | 9552 | |
9c6a1327 TT |
9553 | static void |
9554 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9555 | int discriminant_index, int default_index, | |
9556 | gdb::array_view<discriminant_range> ranges) | |
9557 | { | |
57d02173 TT |
9558 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. */ |
9559 | gdb_assert (discriminant_index == -1 | |
9560 | || (discriminant_index >= 0 | |
9561 | && discriminant_index < type->num_fields ())); | |
c9317f21 | 9562 | gdb_assert (default_index == -1 |
1f704f76 | 9563 | || (default_index >= 0 && default_index < type->num_fields ())); |
c9317f21 | 9564 | |
9c6a1327 | 9565 | /* We have one variant for each non-discriminant field. */ |
57d02173 TT |
9566 | int n_variants = type->num_fields (); |
9567 | if (discriminant_index != -1) | |
9568 | --n_variants; | |
c9317f21 | 9569 | |
9c6a1327 TT |
9570 | variant *variants = new (obstack) variant[n_variants]; |
9571 | int var_idx = 0; | |
9572 | int range_idx = 0; | |
1f704f76 | 9573 | for (int i = 0; i < type->num_fields (); ++i) |
9c6a1327 TT |
9574 | { |
9575 | if (i == discriminant_index) | |
9576 | continue; | |
c9317f21 | 9577 | |
9c6a1327 TT |
9578 | variants[var_idx].first_field = i; |
9579 | variants[var_idx].last_field = i + 1; | |
9580 | ||
9581 | /* The default field does not need a range, but other fields do. | |
9582 | We skipped the discriminant above. */ | |
9583 | if (i != default_index) | |
9584 | { | |
9585 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9586 | ++range_idx; | |
9587 | } | |
c9317f21 | 9588 | |
9c6a1327 TT |
9589 | ++var_idx; |
9590 | } | |
9591 | ||
9592 | gdb_assert (range_idx == ranges.size ()); | |
9593 | gdb_assert (var_idx == n_variants); | |
9594 | ||
9595 | variant_part *part = new (obstack) variant_part; | |
9596 | part->discriminant_index = discriminant_index; | |
57d02173 TT |
9597 | /* If there is no discriminant, then whether it is signed is of no |
9598 | consequence. */ | |
9599 | part->is_unsigned | |
9600 | = (discriminant_index == -1 | |
9601 | ? false | |
c6d940a9 | 9602 | : type->field (discriminant_index).type ()->is_unsigned ()); |
9c6a1327 TT |
9603 | part->variants = gdb::array_view<variant> (variants, n_variants); |
9604 | ||
9605 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9606 | gdb::array_view<variant_part> *prop_value | |
9607 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9608 | |
9c6a1327 | 9609 | struct dynamic_prop prop; |
8c2e4e06 | 9610 | prop.set_variant_parts (prop_value); |
9c6a1327 | 9611 | |
5c54719c | 9612 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
c9317f21 TT |
9613 | } |
9614 | ||
9615 | /* Some versions of rustc emitted enums in an unusual way. | |
9616 | ||
9617 | Ordinary enums were emitted as unions. The first element of each | |
9618 | structure in the union was named "RUST$ENUM$DISR". This element | |
9619 | held the discriminant. | |
9620 | ||
9621 | These versions of Rust also implemented the "non-zero" | |
9622 | optimization. When the enum had two values, and one is empty and | |
9623 | the other holds a pointer that cannot be zero, the pointer is used | |
9624 | as the discriminant, with a zero value meaning the empty variant. | |
9625 | Here, the union's first member is of the form | |
9626 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9627 | where the fieldnos are the indices of the fields that should be | |
9628 | traversed in order to find the field (which may be several fields deep) | |
9629 | and the variantname is the name of the variant of the case when the | |
9630 | field is zero. | |
9631 | ||
9632 | This function recognizes whether TYPE is of one of these forms, | |
9633 | and, if so, smashes it to be a variant type. */ | |
9634 | ||
9635 | static void | |
9636 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9637 | { | |
78134374 | 9638 | gdb_assert (type->code () == TYPE_CODE_UNION); |
c9317f21 TT |
9639 | |
9640 | /* We don't need to deal with empty enums. */ | |
1f704f76 | 9641 | if (type->num_fields () == 0) |
c9317f21 TT |
9642 | return; |
9643 | ||
9644 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
1f704f76 | 9645 | if (type->num_fields () == 1 |
c9317f21 TT |
9646 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) |
9647 | { | |
9648 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9649 | ||
9650 | /* Decode the field name to find the offset of the | |
9651 | discriminant. */ | |
9652 | ULONGEST bit_offset = 0; | |
940da03e | 9653 | struct type *field_type = type->field (0).type (); |
c9317f21 TT |
9654 | while (name[0] >= '0' && name[0] <= '9') |
9655 | { | |
9656 | char *tail; | |
9657 | unsigned long index = strtoul (name, &tail, 10); | |
9658 | name = tail; | |
9659 | if (*name != '$' | |
1f704f76 | 9660 | || index >= field_type->num_fields () |
c9317f21 TT |
9661 | || (TYPE_FIELD_LOC_KIND (field_type, index) |
9662 | != FIELD_LOC_KIND_BITPOS)) | |
9663 | { | |
b98664d3 | 9664 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9665 | "[in module %s]"), |
9666 | TYPE_FIELD_NAME (type, 0), | |
9667 | objfile_name (objfile)); | |
9668 | return; | |
9669 | } | |
9670 | ++name; | |
9671 | ||
9672 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
940da03e | 9673 | field_type = field_type->field (index).type (); |
c9317f21 TT |
9674 | } |
9675 | ||
9c6a1327 TT |
9676 | /* Smash this type to be a structure type. We have to do this |
9677 | because the type has already been recorded. */ | |
67607e24 | 9678 | type->set_code (TYPE_CODE_STRUCT); |
5e33d5f4 | 9679 | type->set_num_fields (3); |
9c6a1327 | 9680 | /* Save the field we care about. */ |
ceacbf6e | 9681 | struct field saved_field = type->field (0); |
3cabb6b0 SM |
9682 | type->set_fields |
9683 | ((struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field))); | |
c9317f21 | 9684 | |
9c6a1327 | 9685 | /* Put the discriminant at index 0. */ |
5d14b6e5 | 9686 | type->field (0).set_type (field_type); |
9c6a1327 TT |
9687 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9688 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
ceacbf6e | 9689 | SET_FIELD_BITPOS (type->field (0), bit_offset); |
c9317f21 TT |
9690 | |
9691 | /* The order of fields doesn't really matter, so put the real | |
9692 | field at index 1 and the data-less field at index 2. */ | |
ceacbf6e | 9693 | type->field (1) = saved_field; |
9c6a1327 | 9694 | TYPE_FIELD_NAME (type, 1) |
940da03e SM |
9695 | = rust_last_path_segment (type->field (1).type ()->name ()); |
9696 | type->field (1).type ()->set_name | |
7d93a1e0 | 9697 | (rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
d0e39ea2 | 9698 | TYPE_FIELD_NAME (type, 1))); |
c9317f21 TT |
9699 | |
9700 | const char *dataless_name | |
7d93a1e0 | 9701 | = rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
c9317f21 TT |
9702 | name); |
9703 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9704 | dataless_name); | |
5d14b6e5 | 9705 | type->field (2).set_type (dataless_type); |
c9317f21 TT |
9706 | /* NAME points into the original discriminant name, which |
9707 | already has the correct lifetime. */ | |
9c6a1327 | 9708 | TYPE_FIELD_NAME (type, 2) = name; |
ceacbf6e | 9709 | SET_FIELD_BITPOS (type->field (2), 0); |
c9317f21 | 9710 | |
9c6a1327 TT |
9711 | /* Indicate that this is a variant type. */ |
9712 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9713 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9714 | } |
77c2dba3 TT |
9715 | /* A union with a single anonymous field is probably an old-style |
9716 | univariant enum. */ | |
1f704f76 | 9717 | else if (type->num_fields () == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) |
c9317f21 | 9718 | { |
c9317f21 TT |
9719 | /* Smash this type to be a structure type. We have to do this |
9720 | because the type has already been recorded. */ | |
67607e24 | 9721 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9722 | |
940da03e | 9723 | struct type *field_type = type->field (0).type (); |
c9317f21 | 9724 | const char *variant_name |
7d93a1e0 | 9725 | = rust_last_path_segment (field_type->name ()); |
9c6a1327 | 9726 | TYPE_FIELD_NAME (type, 0) = variant_name; |
d0e39ea2 SM |
9727 | field_type->set_name |
9728 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9729 | type->name (), variant_name)); |
57d02173 TT |
9730 | |
9731 | alloc_rust_variant (&objfile->objfile_obstack, type, -1, 0, {}); | |
c9317f21 TT |
9732 | } |
9733 | else | |
9734 | { | |
9735 | struct type *disr_type = nullptr; | |
1f704f76 | 9736 | for (int i = 0; i < type->num_fields (); ++i) |
c9317f21 | 9737 | { |
940da03e | 9738 | disr_type = type->field (i).type (); |
c9317f21 | 9739 | |
78134374 | 9740 | if (disr_type->code () != TYPE_CODE_STRUCT) |
a037790e TT |
9741 | { |
9742 | /* All fields of a true enum will be structs. */ | |
9743 | return; | |
9744 | } | |
1f704f76 | 9745 | else if (disr_type->num_fields () == 0) |
c9317f21 TT |
9746 | { |
9747 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9748 | disr_type = nullptr; |
c9317f21 TT |
9749 | } |
9750 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9751 | "RUST$ENUM$DISR") != 0) | |
9752 | { | |
9753 | /* Not a Rust enum. */ | |
9754 | return; | |
9755 | } | |
9756 | else | |
9757 | { | |
9758 | /* Found one. */ | |
9759 | break; | |
9760 | } | |
9761 | } | |
9762 | ||
9763 | /* If we got here without a discriminant, then it's probably | |
9764 | just a union. */ | |
9765 | if (disr_type == nullptr) | |
9766 | return; | |
9767 | ||
9768 | /* Smash this type to be a structure type. We have to do this | |
9769 | because the type has already been recorded. */ | |
67607e24 | 9770 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9771 | |
9c6a1327 | 9772 | /* Make space for the discriminant field. */ |
ceacbf6e | 9773 | struct field *disr_field = &disr_type->field (0); |
9c6a1327 | 9774 | field *new_fields |
1f704f76 | 9775 | = (struct field *) TYPE_ZALLOC (type, ((type->num_fields () + 1) |
9c6a1327 | 9776 | * sizeof (struct field))); |
80fc5e77 | 9777 | memcpy (new_fields + 1, type->fields (), |
1f704f76 | 9778 | type->num_fields () * sizeof (struct field)); |
3cabb6b0 | 9779 | type->set_fields (new_fields); |
1f704f76 | 9780 | type->set_num_fields (type->num_fields () + 1); |
c9317f21 TT |
9781 | |
9782 | /* Install the discriminant at index 0 in the union. */ | |
ceacbf6e | 9783 | type->field (0) = *disr_field; |
9c6a1327 TT |
9784 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9785 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9786 | |
9787 | /* We need a way to find the correct discriminant given a | |
9788 | variant name. For convenience we build a map here. */ | |
b6cdac4b | 9789 | struct type *enum_type = disr_field->type (); |
c9317f21 | 9790 | std::unordered_map<std::string, ULONGEST> discriminant_map; |
1f704f76 | 9791 | for (int i = 0; i < enum_type->num_fields (); ++i) |
c9317f21 TT |
9792 | { |
9793 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9794 | { | |
9795 | const char *name | |
9796 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9797 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9798 | } | |
9799 | } | |
9800 | ||
1f704f76 | 9801 | int n_fields = type->num_fields (); |
9c6a1327 TT |
9802 | /* We don't need a range entry for the discriminant, but we do |
9803 | need one for every other field, as there is no default | |
9804 | variant. */ | |
9805 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9806 | discriminant_range, | |
9807 | n_fields - 1); | |
c9317f21 TT |
9808 | /* Skip the discriminant here. */ |
9809 | for (int i = 1; i < n_fields; ++i) | |
9810 | { | |
9811 | /* Find the final word in the name of this variant's type. | |
9812 | That name can be used to look up the correct | |
9813 | discriminant. */ | |
9814 | const char *variant_name | |
940da03e | 9815 | = rust_last_path_segment (type->field (i).type ()->name ()); |
c9317f21 TT |
9816 | |
9817 | auto iter = discriminant_map.find (variant_name); | |
9818 | if (iter != discriminant_map.end ()) | |
9c6a1327 | 9819 | { |
57d02173 TT |
9820 | ranges[i - 1].low = iter->second; |
9821 | ranges[i - 1].high = iter->second; | |
9c6a1327 | 9822 | } |
c9317f21 | 9823 | |
57d02173 TT |
9824 | /* In Rust, each element should have the size of the |
9825 | enclosing enum. */ | |
9826 | TYPE_LENGTH (type->field (i).type ()) = TYPE_LENGTH (type); | |
9827 | ||
bedda9ac | 9828 | /* Remove the discriminant field, if it exists. */ |
940da03e | 9829 | struct type *sub_type = type->field (i).type (); |
1f704f76 | 9830 | if (sub_type->num_fields () > 0) |
bedda9ac | 9831 | { |
5e33d5f4 | 9832 | sub_type->set_num_fields (sub_type->num_fields () - 1); |
3cabb6b0 | 9833 | sub_type->set_fields (sub_type->fields () + 1); |
bedda9ac | 9834 | } |
9c6a1327 | 9835 | TYPE_FIELD_NAME (type, i) = variant_name; |
d0e39ea2 SM |
9836 | sub_type->set_name |
9837 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9838 | type->name (), variant_name)); |
c9317f21 | 9839 | } |
9c6a1327 TT |
9840 | |
9841 | /* Indicate that this is a variant type. */ | |
a1520ad8 | 9842 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, -1, |
9c6a1327 TT |
9843 | gdb::array_view<discriminant_range> (ranges, |
9844 | n_fields - 1)); | |
c9317f21 TT |
9845 | } |
9846 | } | |
9847 | ||
9848 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9849 | ||
9850 | static void | |
9851 | rust_union_quirks (struct dwarf2_cu *cu) | |
9852 | { | |
9853 | gdb_assert (cu->language == language_rust); | |
52941706 | 9854 | for (type *type_ : cu->rust_unions) |
5e22e966 | 9855 | quirk_rust_enum (type_, cu->per_objfile->objfile); |
2d79090e TT |
9856 | /* We don't need this any more. */ |
9857 | cu->rust_unions.clear (); | |
c9317f21 TT |
9858 | } |
9859 | ||
8adb8487 TT |
9860 | /* See read.h. */ |
9861 | ||
9862 | type_unit_group_unshareable * | |
9863 | dwarf2_per_objfile::get_type_unit_group_unshareable (type_unit_group *tu_group) | |
9864 | { | |
9865 | auto iter = this->m_type_units.find (tu_group); | |
9866 | if (iter != this->m_type_units.end ()) | |
9867 | return iter->second.get (); | |
9868 | ||
9869 | type_unit_group_unshareable_up uniq (new type_unit_group_unshareable); | |
9870 | type_unit_group_unshareable *result = uniq.get (); | |
9871 | this->m_type_units[tu_group] = std::move (uniq); | |
9872 | return result; | |
9873 | } | |
9874 | ||
e286671b TT |
9875 | struct type * |
9876 | dwarf2_per_objfile::get_type_for_signatured_type | |
9877 | (signatured_type *sig_type) const | |
9878 | { | |
9879 | auto iter = this->m_type_map.find (sig_type); | |
9880 | if (iter == this->m_type_map.end ()) | |
9881 | return nullptr; | |
9882 | ||
9883 | return iter->second; | |
9884 | } | |
9885 | ||
9886 | void dwarf2_per_objfile::set_type_for_signatured_type | |
9887 | (signatured_type *sig_type, struct type *type) | |
9888 | { | |
9889 | gdb_assert (this->m_type_map.find (sig_type) == this->m_type_map.end ()); | |
9890 | ||
9891 | this->m_type_map[sig_type] = type; | |
9892 | } | |
9893 | ||
95554aad TT |
9894 | /* A helper function for computing the list of all symbol tables |
9895 | included by PER_CU. */ | |
9896 | ||
9897 | static void | |
4c39bc03 | 9898 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9899 | htab_t all_children, htab_t all_type_symtabs, |
43182c09 SM |
9900 | dwarf2_per_cu_data *per_cu, |
9901 | dwarf2_per_objfile *per_objfile, | |
43f3e411 | 9902 | struct compunit_symtab *immediate_parent) |
95554aad | 9903 | { |
af758d11 | 9904 | void **slot = htab_find_slot (all_children, per_cu, INSERT); |
95554aad TT |
9905 | if (*slot != NULL) |
9906 | { | |
9907 | /* This inclusion and its children have been processed. */ | |
9908 | return; | |
9909 | } | |
9910 | ||
9911 | *slot = per_cu; | |
af758d11 | 9912 | |
95554aad | 9913 | /* Only add a CU if it has a symbol table. */ |
43182c09 | 9914 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
43f3e411 | 9915 | if (cust != NULL) |
ec94af83 DE |
9916 | { |
9917 | /* If this is a type unit only add its symbol table if we haven't | |
9918 | seen it yet (type unit per_cu's can share symtabs). */ | |
9919 | if (per_cu->is_debug_types) | |
9920 | { | |
43f3e411 | 9921 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9922 | if (*slot == NULL) |
9923 | { | |
43f3e411 | 9924 | *slot = cust; |
4c39bc03 | 9925 | result->push_back (cust); |
43f3e411 DE |
9926 | if (cust->user == NULL) |
9927 | cust->user = immediate_parent; | |
ec94af83 DE |
9928 | } |
9929 | } | |
9930 | else | |
f9125b6c | 9931 | { |
4c39bc03 | 9932 | result->push_back (cust); |
43f3e411 DE |
9933 | if (cust->user == NULL) |
9934 | cust->user = immediate_parent; | |
f9125b6c | 9935 | } |
ec94af83 | 9936 | } |
95554aad | 9937 | |
ae640021 AB |
9938 | if (!per_cu->imported_symtabs_empty ()) |
9939 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9940 | { | |
9941 | recursively_compute_inclusions (result, all_children, | |
43182c09 SM |
9942 | all_type_symtabs, ptr, per_objfile, |
9943 | cust); | |
ae640021 | 9944 | } |
95554aad TT |
9945 | } |
9946 | ||
43f3e411 | 9947 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9948 | PER_CU. */ |
9949 | ||
9950 | static void | |
43182c09 SM |
9951 | compute_compunit_symtab_includes (dwarf2_per_cu_data *per_cu, |
9952 | dwarf2_per_objfile *per_objfile) | |
95554aad | 9953 | { |
f4dc4d17 DE |
9954 | gdb_assert (! per_cu->is_debug_types); |
9955 | ||
ae640021 | 9956 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9957 | { |
ae640021 | 9958 | int len; |
4c39bc03 | 9959 | std::vector<compunit_symtab *> result_symtabs; |
43182c09 | 9960 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
95554aad TT |
9961 | |
9962 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9963 | if (cust == NULL) |
95554aad TT |
9964 | return; |
9965 | ||
280a9412 TT |
9966 | htab_up all_children (htab_create_alloc (1, htab_hash_pointer, |
9967 | htab_eq_pointer, | |
9968 | NULL, xcalloc, xfree)); | |
9969 | htab_up all_type_symtabs (htab_create_alloc (1, htab_hash_pointer, | |
9970 | htab_eq_pointer, | |
9971 | NULL, xcalloc, xfree)); | |
95554aad | 9972 | |
ae640021 | 9973 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 | 9974 | { |
280a9412 TT |
9975 | recursively_compute_inclusions (&result_symtabs, all_children.get (), |
9976 | all_type_symtabs.get (), ptr, | |
9977 | per_objfile, cust); | |
ec94af83 | 9978 | } |
95554aad | 9979 | |
ec94af83 | 9980 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9981 | len = result_symtabs.size (); |
43f3e411 | 9982 | cust->includes |
f6e649dd | 9983 | = XOBNEWVEC (&per_objfile->objfile->objfile_obstack, |
8d749320 | 9984 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9985 | memcpy (cust->includes, result_symtabs.data (), |
9986 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9987 | cust->includes[len] = NULL; |
95554aad TT |
9988 | } |
9989 | } | |
9990 | ||
9991 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9992 | read. */ | |
9993 | ||
9994 | static void | |
976ca316 | 9995 | process_cu_includes (dwarf2_per_objfile *per_objfile) |
95554aad | 9996 | { |
976ca316 | 9997 | for (dwarf2_per_cu_data *iter : per_objfile->per_bfd->just_read_cus) |
f4dc4d17 DE |
9998 | { |
9999 | if (! iter->is_debug_types) | |
976ca316 | 10000 | compute_compunit_symtab_includes (iter, per_objfile); |
f4dc4d17 | 10001 | } |
95554aad | 10002 | |
976ca316 | 10003 | per_objfile->per_bfd->just_read_cus.clear (); |
95554aad TT |
10004 | } |
10005 | ||
8fc0b21d | 10006 | /* Generate full symbol information for CU, whose DIEs have |
10b3939b DJ |
10007 | already been loaded into memory. */ |
10008 | ||
10009 | static void | |
8fc0b21d | 10010 | process_full_comp_unit (dwarf2_cu *cu, enum language pretend_language) |
10b3939b | 10011 | { |
976ca316 SM |
10012 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10013 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 10014 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 10015 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10016 | struct compunit_symtab *cust; |
10b3939b | 10017 | CORE_ADDR baseaddr; |
4359dff1 | 10018 | struct block *static_block; |
3e29f34a | 10019 | CORE_ADDR addr; |
10b3939b | 10020 | |
b3b3bada | 10021 | baseaddr = objfile->text_section_offset (); |
10b3939b | 10022 | |
c89b44cd TT |
10023 | /* Clear the list here in case something was left over. */ |
10024 | cu->method_list.clear (); | |
10b3939b | 10025 | |
95554aad TT |
10026 | cu->language = pretend_language; |
10027 | cu->language_defn = language_def (cu->language); | |
10028 | ||
1c47ec3e TV |
10029 | dwarf2_find_base_address (cu->dies, cu); |
10030 | ||
c906108c | 10031 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10032 | process_die (cu->dies, cu); |
c906108c | 10033 | |
a766d390 DE |
10034 | /* For now fudge the Go package. */ |
10035 | if (cu->language == language_go) | |
10036 | fixup_go_packaging (cu); | |
10037 | ||
5f48f8f3 | 10038 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
10039 | should be complete, and it should now be safe to compute all of the |
10040 | physnames. */ | |
10041 | compute_delayed_physnames (cu); | |
3da10d80 | 10042 | |
c9317f21 TT |
10043 | if (cu->language == language_rust) |
10044 | rust_union_quirks (cu); | |
10045 | ||
fae299cd DC |
10046 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10047 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10048 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10049 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10050 | |
3e29f34a | 10051 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 10052 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
10053 | |
10054 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10055 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10056 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10057 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10058 | this comp unit. */ | |
10059 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10060 | ||
c24bdb02 | 10061 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
10062 | SECT_OFF_TEXT (objfile), |
10063 | 0); | |
c906108c | 10064 | |
43f3e411 | 10065 | if (cust != NULL) |
c906108c | 10066 | { |
df15bd07 | 10067 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10068 | |
8be455d7 JK |
10069 | /* Set symtab language to language from DW_AT_language. If the |
10070 | compilation is from a C file generated by language preprocessors, do | |
10071 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10072 | if (!(cu->language == language_c |
40e3ad0e | 10073 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10074 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10075 | |
10076 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10077 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10078 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10079 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10080 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10081 | |
10082 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10083 | needed, it would be wrong due to missing DW_AT_producer there. | |
10084 | ||
10085 | Still one can confuse GDB by using non-standard GCC compilation | |
10086 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 10087 | */ |
ab260dad | 10088 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10089 | cust->locations_valid = 1; |
e0d00bc7 JK |
10090 | |
10091 | if (gcc_4_minor >= 5) | |
43f3e411 | 10092 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10093 | |
43f3e411 | 10094 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10095 | } |
9291a0cd | 10096 | |
976ca316 | 10097 | per_objfile->set_symtab (cu->per_cu, cust); |
c906108c | 10098 | |
95554aad | 10099 | /* Push it for inclusion processing later. */ |
976ca316 | 10100 | per_objfile->per_bfd->just_read_cus.push_back (cu->per_cu); |
804d2729 TT |
10101 | |
10102 | /* Not needed any more. */ | |
c24bdb02 | 10103 | cu->reset_builder (); |
f4dc4d17 | 10104 | } |
45cfd468 | 10105 | |
8fc0b21d | 10106 | /* Generate full symbol information for type unit CU, whose DIEs have |
f4dc4d17 DE |
10107 | already been loaded into memory. */ |
10108 | ||
10109 | static void | |
8fc0b21d | 10110 | process_full_type_unit (dwarf2_cu *cu, |
f4dc4d17 DE |
10111 | enum language pretend_language) |
10112 | { | |
976ca316 SM |
10113 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10114 | struct objfile *objfile = per_objfile->objfile; | |
43f3e411 | 10115 | struct compunit_symtab *cust; |
0186c6a7 DE |
10116 | struct signatured_type *sig_type; |
10117 | ||
8fc0b21d SM |
10118 | gdb_assert (cu->per_cu->is_debug_types); |
10119 | sig_type = (struct signatured_type *) cu->per_cu; | |
f4dc4d17 | 10120 | |
c89b44cd TT |
10121 | /* Clear the list here in case something was left over. */ |
10122 | cu->method_list.clear (); | |
f4dc4d17 | 10123 | |
f4dc4d17 DE |
10124 | cu->language = pretend_language; |
10125 | cu->language_defn = language_def (cu->language); | |
10126 | ||
10127 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10128 | process_die (cu->dies, cu); | |
10129 | ||
10130 | /* For now fudge the Go package. */ | |
10131 | if (cu->language == language_go) | |
10132 | fixup_go_packaging (cu); | |
10133 | ||
5f48f8f3 | 10134 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
10135 | should be complete, and it should now be safe to compute all of the |
10136 | physnames. */ | |
10137 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10138 | |
c9317f21 TT |
10139 | if (cu->language == language_rust) |
10140 | rust_union_quirks (cu); | |
10141 | ||
f4dc4d17 DE |
10142 | /* TUs share symbol tables. |
10143 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10144 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10145 | this TU's symbols to the existing symtab. */ | |
8adb8487 | 10146 | type_unit_group_unshareable *tug_unshare = |
976ca316 | 10147 | per_objfile->get_type_unit_group_unshareable (sig_type->type_unit_group); |
8adb8487 | 10148 | if (tug_unshare->compunit_symtab == NULL) |
45cfd468 | 10149 | { |
c24bdb02 KS |
10150 | buildsym_compunit *builder = cu->get_builder (); |
10151 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
8adb8487 | 10152 | tug_unshare->compunit_symtab = cust; |
f4dc4d17 | 10153 | |
43f3e411 | 10154 | if (cust != NULL) |
f4dc4d17 DE |
10155 | { |
10156 | /* Set symtab language to language from DW_AT_language. If the | |
10157 | compilation is from a C file generated by language preprocessors, | |
10158 | do not set the language if it was already deduced by | |
10159 | start_subfile. */ | |
43f3e411 DE |
10160 | if (!(cu->language == language_c |
10161 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10162 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10163 | } |
10164 | } | |
10165 | else | |
10166 | { | |
c24bdb02 | 10167 | cu->get_builder ()->augment_type_symtab (); |
8adb8487 | 10168 | cust = tug_unshare->compunit_symtab; |
f4dc4d17 DE |
10169 | } |
10170 | ||
976ca316 | 10171 | per_objfile->set_symtab (cu->per_cu, cust); |
804d2729 TT |
10172 | |
10173 | /* Not needed any more. */ | |
c24bdb02 | 10174 | cu->reset_builder (); |
c906108c SS |
10175 | } |
10176 | ||
95554aad TT |
10177 | /* Process an imported unit DIE. */ |
10178 | ||
10179 | static void | |
10180 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10181 | { | |
10182 | struct attribute *attr; | |
10183 | ||
f4dc4d17 DE |
10184 | /* For now we don't handle imported units in type units. */ |
10185 | if (cu->per_cu->is_debug_types) | |
10186 | { | |
10187 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10188 | " supported in type units [in module %s]"), | |
5e22e966 | 10189 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
10190 | } |
10191 | ||
95554aad TT |
10192 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10193 | if (attr != NULL) | |
10194 | { | |
0826b30a | 10195 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 | 10196 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
ab432490 | 10197 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9c541725 | 10198 | dwarf2_per_cu_data *per_cu |
ab432490 | 10199 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, per_objfile); |
95554aad | 10200 | |
58990295 TV |
10201 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
10202 | into another compilation unit, at root level. Regard this as a hint, | |
10203 | and ignore it. */ | |
10204 | if (die->parent && die->parent->parent == NULL | |
10205 | && per_cu->unit_type == DW_UT_compile | |
10206 | && per_cu->lang == language_cplus) | |
10207 | return; | |
10208 | ||
69d751e3 | 10209 | /* If necessary, add it to the queue and load its DIEs. */ |
120ce1b5 | 10210 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
4a636814 SM |
10211 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
10212 | false, cu->language); | |
95554aad | 10213 | |
ae640021 | 10214 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
10215 | } |
10216 | } | |
10217 | ||
4c8aa72d PA |
10218 | /* RAII object that represents a process_die scope: i.e., |
10219 | starts/finishes processing a DIE. */ | |
10220 | class process_die_scope | |
adde2bff | 10221 | { |
4c8aa72d PA |
10222 | public: |
10223 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10224 | : m_die (die), m_cu (cu) | |
10225 | { | |
10226 | /* We should only be processing DIEs not already in process. */ | |
10227 | gdb_assert (!m_die->in_process); | |
10228 | m_die->in_process = true; | |
10229 | } | |
8c3cb9fa | 10230 | |
4c8aa72d PA |
10231 | ~process_die_scope () |
10232 | { | |
10233 | m_die->in_process = false; | |
10234 | ||
10235 | /* If we're done processing the DIE for the CU that owns the line | |
10236 | header, we don't need the line header anymore. */ | |
10237 | if (m_cu->line_header_die_owner == m_die) | |
10238 | { | |
10239 | delete m_cu->line_header; | |
10240 | m_cu->line_header = NULL; | |
10241 | m_cu->line_header_die_owner = NULL; | |
10242 | } | |
10243 | } | |
10244 | ||
10245 | private: | |
10246 | die_info *m_die; | |
10247 | dwarf2_cu *m_cu; | |
10248 | }; | |
adde2bff | 10249 | |
c906108c SS |
10250 | /* Process a die and its children. */ |
10251 | ||
10252 | static void | |
e7c27a73 | 10253 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10254 | { |
4c8aa72d | 10255 | process_die_scope scope (die, cu); |
adde2bff | 10256 | |
c906108c SS |
10257 | switch (die->tag) |
10258 | { | |
10259 | case DW_TAG_padding: | |
10260 | break; | |
10261 | case DW_TAG_compile_unit: | |
95554aad | 10262 | case DW_TAG_partial_unit: |
e7c27a73 | 10263 | read_file_scope (die, cu); |
c906108c | 10264 | break; |
348e048f DE |
10265 | case DW_TAG_type_unit: |
10266 | read_type_unit_scope (die, cu); | |
10267 | break; | |
c906108c | 10268 | case DW_TAG_subprogram: |
0a4b0913 AB |
10269 | /* Nested subprograms in Fortran get a prefix. */ |
10270 | if (cu->language == language_fortran | |
10271 | && die->parent != NULL | |
10272 | && die->parent->tag == DW_TAG_subprogram) | |
10273 | cu->processing_has_namespace_info = true; | |
10274 | /* Fall through. */ | |
c906108c | 10275 | case DW_TAG_inlined_subroutine: |
edb3359d | 10276 | read_func_scope (die, cu); |
c906108c SS |
10277 | break; |
10278 | case DW_TAG_lexical_block: | |
14898363 L |
10279 | case DW_TAG_try_block: |
10280 | case DW_TAG_catch_block: | |
e7c27a73 | 10281 | read_lexical_block_scope (die, cu); |
c906108c | 10282 | break; |
216f72a1 | 10283 | case DW_TAG_call_site: |
96408a79 SA |
10284 | case DW_TAG_GNU_call_site: |
10285 | read_call_site_scope (die, cu); | |
10286 | break; | |
c906108c | 10287 | case DW_TAG_class_type: |
680b30c7 | 10288 | case DW_TAG_interface_type: |
c906108c SS |
10289 | case DW_TAG_structure_type: |
10290 | case DW_TAG_union_type: | |
134d01f1 | 10291 | process_structure_scope (die, cu); |
c906108c SS |
10292 | break; |
10293 | case DW_TAG_enumeration_type: | |
134d01f1 | 10294 | process_enumeration_scope (die, cu); |
c906108c | 10295 | break; |
134d01f1 | 10296 | |
f792889a DJ |
10297 | /* These dies have a type, but processing them does not create |
10298 | a symbol or recurse to process the children. Therefore we can | |
10299 | read them on-demand through read_type_die. */ | |
c906108c | 10300 | case DW_TAG_subroutine_type: |
72019c9c | 10301 | case DW_TAG_set_type: |
c906108c | 10302 | case DW_TAG_pointer_type: |
c906108c | 10303 | case DW_TAG_ptr_to_member_type: |
c906108c | 10304 | case DW_TAG_reference_type: |
4297a3f0 | 10305 | case DW_TAG_rvalue_reference_type: |
c906108c | 10306 | case DW_TAG_string_type: |
c906108c | 10307 | break; |
134d01f1 | 10308 | |
d8f62e84 TT |
10309 | case DW_TAG_array_type: |
10310 | /* We only need to handle this case for Ada -- in other | |
10311 | languages, it's normal for the compiler to emit a typedef | |
10312 | instead. */ | |
10313 | if (cu->language != language_ada) | |
10314 | break; | |
10315 | /* FALLTHROUGH */ | |
c906108c | 10316 | case DW_TAG_base_type: |
a02abb62 | 10317 | case DW_TAG_subrange_type: |
cb249c71 | 10318 | case DW_TAG_typedef: |
134d01f1 | 10319 | /* Add a typedef symbol for the type definition, if it has a |
dda83cd7 | 10320 | DW_AT_name. */ |
f792889a | 10321 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10322 | break; |
c906108c | 10323 | case DW_TAG_common_block: |
e7c27a73 | 10324 | read_common_block (die, cu); |
c906108c SS |
10325 | break; |
10326 | case DW_TAG_common_inclusion: | |
10327 | break; | |
d9fa45fe | 10328 | case DW_TAG_namespace: |
9068261f | 10329 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10330 | read_namespace (die, cu); |
d9fa45fe | 10331 | break; |
5d7cb8df | 10332 | case DW_TAG_module: |
9068261f | 10333 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10334 | read_module (die, cu); |
10335 | break; | |
d9fa45fe | 10336 | case DW_TAG_imported_declaration: |
9068261f | 10337 | cu->processing_has_namespace_info = true; |
74921315 KS |
10338 | if (read_namespace_alias (die, cu)) |
10339 | break; | |
86a73007 TT |
10340 | /* The declaration is not a global namespace alias. */ |
10341 | /* Fall through. */ | |
d9fa45fe | 10342 | case DW_TAG_imported_module: |
9068261f | 10343 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10344 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10345 | || cu->language != language_fortran)) | |
b98664d3 | 10346 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10347 | dwarf_tag_name (die->tag)); |
10348 | read_import_statement (die, cu); | |
d9fa45fe | 10349 | break; |
95554aad TT |
10350 | |
10351 | case DW_TAG_imported_unit: | |
10352 | process_imported_unit_die (die, cu); | |
10353 | break; | |
10354 | ||
71a3c369 TT |
10355 | case DW_TAG_variable: |
10356 | read_variable (die, cu); | |
10357 | break; | |
10358 | ||
c906108c | 10359 | default: |
e7c27a73 | 10360 | new_symbol (die, NULL, cu); |
c906108c SS |
10361 | break; |
10362 | } | |
10363 | } | |
ca69b9e6 DE |
10364 | \f |
10365 | /* DWARF name computation. */ | |
c906108c | 10366 | |
94af9270 KS |
10367 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10368 | needs to have the name of the scope prepended to the name listed in the | |
10369 | die. */ | |
10370 | ||
10371 | static int | |
10372 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10373 | { | |
1c809c68 TT |
10374 | struct attribute *attr; |
10375 | ||
94af9270 KS |
10376 | switch (die->tag) |
10377 | { | |
10378 | case DW_TAG_namespace: | |
10379 | case DW_TAG_typedef: | |
10380 | case DW_TAG_class_type: | |
10381 | case DW_TAG_interface_type: | |
10382 | case DW_TAG_structure_type: | |
10383 | case DW_TAG_union_type: | |
10384 | case DW_TAG_enumeration_type: | |
10385 | case DW_TAG_enumerator: | |
10386 | case DW_TAG_subprogram: | |
08a76f8a | 10387 | case DW_TAG_inlined_subroutine: |
94af9270 | 10388 | case DW_TAG_member: |
74921315 | 10389 | case DW_TAG_imported_declaration: |
94af9270 KS |
10390 | return 1; |
10391 | ||
10392 | case DW_TAG_variable: | |
c2b0a229 | 10393 | case DW_TAG_constant: |
94af9270 KS |
10394 | /* We only need to prefix "globally" visible variables. These include |
10395 | any variable marked with DW_AT_external or any variable that | |
10396 | lives in a namespace. [Variables in anonymous namespaces | |
10397 | require prefixing, but they are not DW_AT_external.] */ | |
10398 | ||
10399 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10400 | { | |
10401 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10402 | |
94af9270 KS |
10403 | return die_needs_namespace (die_specification (die, &spec_cu), |
10404 | spec_cu); | |
10405 | } | |
10406 | ||
1c809c68 | 10407 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10408 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10409 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10410 | return 0; |
10411 | /* A variable in a lexical block of some kind does not need a | |
10412 | namespace, even though in C++ such variables may be external | |
10413 | and have a mangled name. */ | |
10414 | if (die->parent->tag == DW_TAG_lexical_block | |
10415 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10416 | || die->parent->tag == DW_TAG_catch_block |
10417 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10418 | return 0; |
10419 | return 1; | |
94af9270 KS |
10420 | |
10421 | default: | |
10422 | return 0; | |
10423 | } | |
10424 | } | |
10425 | ||
73b9be8b KS |
10426 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10427 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10428 | defined for the given DIE. */ | |
10429 | ||
10430 | static struct attribute * | |
10431 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10432 | { | |
10433 | struct attribute *attr; | |
10434 | ||
10435 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10436 | if (attr == NULL) | |
10437 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10438 | ||
10439 | return attr; | |
10440 | } | |
10441 | ||
10442 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10443 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10444 | defined for the given DIE. */ | |
10445 | ||
10446 | static const char * | |
10447 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10448 | { | |
10449 | const char *linkage_name; | |
10450 | ||
10451 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10452 | if (linkage_name == NULL) | |
10453 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10454 | ||
787de330 TT |
10455 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10456 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10457 | if (cu->language == language_rust && linkage_name != NULL | |
10458 | && strchr (linkage_name, '{') != NULL) | |
10459 | linkage_name = NULL; | |
10460 | ||
73b9be8b KS |
10461 | return linkage_name; |
10462 | } | |
10463 | ||
94af9270 | 10464 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10465 | compute the physname for the object, which include a method's: |
9c37b5ae | 10466 | - formal parameters (C++), |
a766d390 | 10467 | - receiver type (Go), |
a766d390 DE |
10468 | |
10469 | The term "physname" is a bit confusing. | |
10470 | For C++, for example, it is the demangled name. | |
10471 | For Go, for example, it's the mangled name. | |
94af9270 | 10472 | |
af6b7be1 JB |
10473 | For Ada, return the DIE's linkage name rather than the fully qualified |
10474 | name. PHYSNAME is ignored.. | |
10475 | ||
5989a64e | 10476 | The result is allocated on the objfile->per_bfd's obstack and |
45940949 | 10477 | canonicalized. */ |
94af9270 KS |
10478 | |
10479 | static const char * | |
15d034d0 TT |
10480 | dwarf2_compute_name (const char *name, |
10481 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10482 | int physname) |
10483 | { | |
5e22e966 | 10484 | struct objfile *objfile = cu->per_objfile->objfile; |
bb5ed363 | 10485 | |
94af9270 KS |
10486 | if (name == NULL) |
10487 | name = dwarf2_name (die, cu); | |
10488 | ||
2ee7123e DE |
10489 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10490 | but otherwise compute it by typename_concat inside GDB. | |
10491 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10492 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10493 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10494 | will set the demangled name to the result of dwarf2_full_name, and it is |
10495 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10496 | if (cu->language == language_ada |
10497 | || (cu->language == language_fortran && physname)) | |
10498 | { | |
10499 | /* For Ada unit, we prefer the linkage name over the name, as | |
10500 | the former contains the exported name, which the user expects | |
10501 | to be able to reference. Ideally, we want the user to be able | |
10502 | to reference this entity using either natural or linkage name, | |
10503 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10504 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10505 | |
2ee7123e DE |
10506 | if (linkage_name != NULL) |
10507 | return linkage_name; | |
f55ee35c JK |
10508 | } |
10509 | ||
94af9270 KS |
10510 | /* These are the only languages we know how to qualify names in. */ |
10511 | if (name != NULL | |
9c37b5ae | 10512 | && (cu->language == language_cplus |
c44af4eb TT |
10513 | || cu->language == language_fortran || cu->language == language_d |
10514 | || cu->language == language_rust)) | |
94af9270 KS |
10515 | { |
10516 | if (die_needs_namespace (die, cu)) | |
10517 | { | |
0d5cff50 | 10518 | const char *prefix; |
34a68019 | 10519 | const char *canonical_name = NULL; |
94af9270 | 10520 | |
d7e74731 PA |
10521 | string_file buf; |
10522 | ||
94af9270 | 10523 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10524 | if (*prefix != '\0') |
10525 | { | |
43816ebc TT |
10526 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10527 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10528 | |
43816ebc | 10529 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10530 | } |
10531 | else | |
d7e74731 | 10532 | buf.puts (name); |
94af9270 | 10533 | |
98bfdba5 PA |
10534 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10535 | as children with DW_TAG_template_type_param or | |
10536 | DW_TAG_value_type_param. If the latter, add them to the name | |
10537 | here. If the name already has template parameters, then | |
10538 | skip this step; some versions of GCC emit both, and | |
10539 | it is more efficient to use the pre-computed name. | |
10540 | ||
10541 | Something to keep in mind about this process: it is very | |
10542 | unlikely, or in some cases downright impossible, to produce | |
10543 | something that will match the mangled name of a function. | |
10544 | If the definition of the function has the same debug info, | |
10545 | we should be able to match up with it anyway. But fallbacks | |
10546 | using the minimal symbol, for instance to find a method | |
10547 | implemented in a stripped copy of libstdc++, will not work. | |
10548 | If we do not have debug info for the definition, we will have to | |
10549 | match them up some other way. | |
10550 | ||
10551 | When we do name matching there is a related problem with function | |
10552 | templates; two instantiated function templates are allowed to | |
10553 | differ only by their return types, which we do not add here. */ | |
10554 | ||
10555 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10556 | { | |
10557 | struct attribute *attr; | |
10558 | struct die_info *child; | |
10559 | int first = 1; | |
10560 | ||
10561 | die->building_fullname = 1; | |
10562 | ||
10563 | for (child = die->child; child != NULL; child = child->sibling) | |
10564 | { | |
10565 | struct type *type; | |
12df843f | 10566 | LONGEST value; |
d521ce57 | 10567 | const gdb_byte *bytes; |
98bfdba5 PA |
10568 | struct dwarf2_locexpr_baton *baton; |
10569 | struct value *v; | |
10570 | ||
10571 | if (child->tag != DW_TAG_template_type_param | |
10572 | && child->tag != DW_TAG_template_value_param) | |
10573 | continue; | |
10574 | ||
10575 | if (first) | |
10576 | { | |
d7e74731 | 10577 | buf.puts ("<"); |
98bfdba5 PA |
10578 | first = 0; |
10579 | } | |
10580 | else | |
d7e74731 | 10581 | buf.puts (", "); |
98bfdba5 PA |
10582 | |
10583 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10584 | if (attr == NULL) | |
10585 | { | |
b98664d3 | 10586 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10587 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10588 | continue; |
10589 | } | |
10590 | type = die_type (child, cu); | |
10591 | ||
10592 | if (child->tag == DW_TAG_template_type_param) | |
10593 | { | |
c1ec8cea TT |
10594 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10595 | &type_print_raw_options); | |
98bfdba5 PA |
10596 | continue; |
10597 | } | |
10598 | ||
10599 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10600 | if (attr == NULL) | |
10601 | { | |
b98664d3 | 10602 | complaint (_("template parameter missing " |
3e43a32a | 10603 | "DW_AT_const_value")); |
d7e74731 | 10604 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10605 | continue; |
10606 | } | |
10607 | ||
10608 | dwarf2_const_value_attr (attr, type, name, | |
10609 | &cu->comp_unit_obstack, cu, | |
10610 | &value, &bytes, &baton); | |
10611 | ||
20ce4123 | 10612 | if (type->has_no_signedness ()) |
98bfdba5 PA |
10613 | /* GDB prints characters as NUMBER 'CHAR'. If that's |
10614 | changed, this can use value_print instead. */ | |
d7e74731 | 10615 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10616 | else |
10617 | { | |
10618 | struct value_print_options opts; | |
10619 | ||
10620 | if (baton != NULL) | |
10621 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10622 | baton->data, | |
10623 | baton->size, | |
9f47c707 SM |
10624 | baton->per_cu, |
10625 | baton->per_objfile); | |
98bfdba5 PA |
10626 | else if (bytes != NULL) |
10627 | { | |
10628 | v = allocate_value (type); | |
10629 | memcpy (value_contents_writeable (v), bytes, | |
10630 | TYPE_LENGTH (type)); | |
10631 | } | |
10632 | else | |
10633 | v = value_from_longest (type, value); | |
10634 | ||
3e43a32a MS |
10635 | /* Specify decimal so that we do not depend on |
10636 | the radix. */ | |
98bfdba5 PA |
10637 | get_formatted_print_options (&opts, 'd'); |
10638 | opts.raw = 1; | |
d7e74731 | 10639 | value_print (v, &buf, &opts); |
98bfdba5 | 10640 | release_value (v); |
98bfdba5 PA |
10641 | } |
10642 | } | |
10643 | ||
10644 | die->building_fullname = 0; | |
10645 | ||
10646 | if (!first) | |
10647 | { | |
10648 | /* Close the argument list, with a space if necessary | |
10649 | (nested templates). */ | |
d7e74731 PA |
10650 | if (!buf.empty () && buf.string ().back () == '>') |
10651 | buf.puts (" >"); | |
98bfdba5 | 10652 | else |
d7e74731 | 10653 | buf.puts (">"); |
98bfdba5 PA |
10654 | } |
10655 | } | |
10656 | ||
9c37b5ae | 10657 | /* For C++ methods, append formal parameter type |
94af9270 | 10658 | information, if PHYSNAME. */ |
6e70227d | 10659 | |
94af9270 | 10660 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10661 | && cu->language == language_cplus) |
94af9270 KS |
10662 | { |
10663 | struct type *type = read_type_die (die, cu); | |
10664 | ||
d7e74731 | 10665 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10666 | &type_print_raw_options); |
94af9270 | 10667 | |
9c37b5ae | 10668 | if (cu->language == language_cplus) |
94af9270 | 10669 | { |
60430eff DJ |
10670 | /* Assume that an artificial first parameter is |
10671 | "this", but do not crash if it is not. RealView | |
10672 | marks unnamed (and thus unused) parameters as | |
10673 | artificial; there is no way to differentiate | |
10674 | the two cases. */ | |
1f704f76 | 10675 | if (type->num_fields () > 0 |
94af9270 | 10676 | && TYPE_FIELD_ARTIFICIAL (type, 0) |
940da03e SM |
10677 | && type->field (0).type ()->code () == TYPE_CODE_PTR |
10678 | && TYPE_CONST (TYPE_TARGET_TYPE (type->field (0).type ()))) | |
d7e74731 | 10679 | buf.puts (" const"); |
94af9270 KS |
10680 | } |
10681 | } | |
10682 | ||
d7e74731 | 10683 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10684 | |
10685 | if (cu->language == language_cplus) | |
34a68019 | 10686 | canonical_name |
322a8516 | 10687 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10688 | objfile); |
34a68019 TT |
10689 | |
10690 | /* If we only computed INTERMEDIATE_NAME, or if | |
10691 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10692 | intern it. */ |
322a8516 | 10693 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10694 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10695 | else |
10696 | name = canonical_name; | |
94af9270 KS |
10697 | } |
10698 | } | |
10699 | ||
10700 | return name; | |
10701 | } | |
10702 | ||
0114d602 DJ |
10703 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10704 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10705 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10706 | not have a name. NAME may either be from a previous call to |
10707 | dwarf2_name or NULL. | |
10708 | ||
9c37b5ae | 10709 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10710 | |
10711 | static const char * | |
15d034d0 | 10712 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10713 | { |
94af9270 KS |
10714 | return dwarf2_compute_name (name, die, cu, 0); |
10715 | } | |
0114d602 | 10716 | |
94af9270 KS |
10717 | /* Construct a physname for the given DIE in CU. NAME may either be |
10718 | from a previous call to dwarf2_name or NULL. The result will be | |
10719 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10720 | name. | |
0114d602 | 10721 | |
9c37b5ae | 10722 | The output string will be canonicalized (if C++). */ |
0114d602 | 10723 | |
94af9270 | 10724 | static const char * |
15d034d0 | 10725 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10726 | { |
5e22e966 | 10727 | struct objfile *objfile = cu->per_objfile->objfile; |
900e11f9 | 10728 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10729 | int need_copy = 1; |
10730 | ||
10731 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10732 | on its own. */ | |
10733 | if (!die_needs_namespace (die, cu)) | |
10734 | return dwarf2_compute_name (name, die, cu, 1); | |
10735 | ||
906bb4c5 TT |
10736 | if (cu->language != language_rust) |
10737 | mangled = dw2_linkage_name (die, cu); | |
900e11f9 JK |
10738 | |
10739 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10740 | has computed. */ | |
791afaa2 | 10741 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10742 | if (mangled != NULL) |
900e11f9 | 10743 | { |
900e11f9 | 10744 | |
d3355e4d | 10745 | if (language_def (cu->language)->store_sym_names_in_linkage_form_p ()) |
59cc4834 JB |
10746 | { |
10747 | /* Do nothing (do not demangle the symbol name). */ | |
10748 | } | |
a766d390 DE |
10749 | else |
10750 | { | |
0eb876f5 JB |
10751 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10752 | their return type. It is easier for GDB users to search | |
10753 | for such functions as `name(params)' than `long name(params)'. | |
10754 | In such case the minimal symbol names do not match the full | |
10755 | symbol names but for template functions there is never a need | |
10756 | to look up their definition from their declaration so | |
10757 | the only disadvantage remains the minimal symbol variant | |
10758 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10759 | demangled.reset (gdb_demangle (mangled, |
10760 | (DMGL_PARAMS | DMGL_ANSI | |
10761 | | DMGL_RET_DROP))); | |
a766d390 | 10762 | } |
900e11f9 | 10763 | if (demangled) |
791afaa2 | 10764 | canon = demangled.get (); |
900e11f9 JK |
10765 | else |
10766 | { | |
10767 | canon = mangled; | |
10768 | need_copy = 0; | |
10769 | } | |
10770 | } | |
10771 | ||
10772 | if (canon == NULL || check_physname) | |
10773 | { | |
10774 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10775 | ||
10776 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10777 | { | |
10778 | /* It may not mean a bug in GDB. The compiler could also | |
10779 | compute DW_AT_linkage_name incorrectly. But in such case | |
10780 | GDB would need to be bug-to-bug compatible. */ | |
10781 | ||
b98664d3 | 10782 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10783 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10784 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10785 | objfile_name (objfile)); |
900e11f9 JK |
10786 | |
10787 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10788 | is available here - over computed PHYSNAME. It is safer | |
10789 | against both buggy GDB and buggy compilers. */ | |
10790 | ||
10791 | retval = canon; | |
10792 | } | |
10793 | else | |
10794 | { | |
10795 | retval = physname; | |
10796 | need_copy = 0; | |
10797 | } | |
10798 | } | |
10799 | else | |
10800 | retval = canon; | |
10801 | ||
10802 | if (need_copy) | |
be1e3d3e | 10803 | retval = objfile->intern (retval); |
900e11f9 | 10804 | |
900e11f9 | 10805 | return retval; |
0114d602 DJ |
10806 | } |
10807 | ||
74921315 KS |
10808 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10809 | a new symbol for it. | |
10810 | ||
10811 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10812 | ||
10813 | static int | |
10814 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10815 | { | |
10816 | struct attribute *attr; | |
10817 | ||
10818 | /* If the die does not have a name, this is not a namespace | |
10819 | alias. */ | |
10820 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10821 | if (attr != NULL) | |
10822 | { | |
10823 | int num; | |
10824 | struct die_info *d = die; | |
10825 | struct dwarf2_cu *imported_cu = cu; | |
10826 | ||
10827 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10828 | keep inspecting DIEs until we hit the underlying import. */ | |
10829 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10830 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10831 | { | |
10832 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10833 | if (attr == NULL) | |
10834 | break; | |
10835 | ||
10836 | d = follow_die_ref (d, attr, &imported_cu); | |
10837 | if (d->tag != DW_TAG_imported_declaration) | |
10838 | break; | |
10839 | } | |
10840 | ||
10841 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10842 | { | |
b98664d3 | 10843 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10844 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10845 | return 0; |
10846 | } | |
10847 | ||
10848 | if (attr != NULL) | |
10849 | { | |
10850 | struct type *type; | |
0826b30a | 10851 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10852 | |
aa66c379 | 10853 | type = get_die_type_at_offset (sect_off, cu->per_cu, cu->per_objfile); |
78134374 | 10854 | if (type != NULL && type->code () == TYPE_CODE_NAMESPACE) |
74921315 KS |
10855 | { |
10856 | /* This declaration is a global namespace alias. Add | |
10857 | a symbol for it whose type is the aliased namespace. */ | |
10858 | new_symbol (die, type, cu); | |
10859 | return 1; | |
10860 | } | |
10861 | } | |
10862 | } | |
10863 | ||
10864 | return 0; | |
10865 | } | |
10866 | ||
22cee43f | 10867 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10868 | current context for CU. |
22cee43f PMR |
10869 | |
10870 | For Ada, imported declarations can materialize renamings, which *may* be | |
10871 | global. However it is impossible (for now?) in DWARF to distinguish | |
10872 | "external" imported declarations and "static" ones. As all imported | |
10873 | declarations seem to be static in all other languages, make them all CU-wide | |
10874 | global only in Ada. */ | |
10875 | ||
10876 | static struct using_direct ** | |
804d2729 | 10877 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10878 | { |
c24bdb02 KS |
10879 | if (cu->language == language_ada |
10880 | && cu->get_builder ()->outermost_context_p ()) | |
10881 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10882 | else |
c24bdb02 | 10883 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10884 | } |
10885 | ||
27aa8d6a SW |
10886 | /* Read the import statement specified by the given die and record it. */ |
10887 | ||
10888 | static void | |
10889 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10890 | { | |
5e22e966 | 10891 | struct objfile *objfile = cu->per_objfile->objfile; |
27aa8d6a | 10892 | struct attribute *import_attr; |
32019081 | 10893 | struct die_info *imported_die, *child_die; |
de4affc9 | 10894 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10895 | const char *imported_name; |
794684b6 | 10896 | const char *imported_name_prefix; |
13387711 SW |
10897 | const char *canonical_name; |
10898 | const char *import_alias; | |
10899 | const char *imported_declaration = NULL; | |
794684b6 | 10900 | const char *import_prefix; |
eb1e02fd | 10901 | std::vector<const char *> excludes; |
13387711 | 10902 | |
27aa8d6a SW |
10903 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10904 | if (import_attr == NULL) | |
10905 | { | |
b98664d3 | 10906 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10907 | dwarf_tag_name (die->tag)); |
10908 | return; | |
10909 | } | |
10910 | ||
de4affc9 CC |
10911 | imported_cu = cu; |
10912 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10913 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10914 | if (imported_name == NULL) |
10915 | { | |
10916 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10917 | ||
dda83cd7 SM |
10918 | The import in the following code: |
10919 | namespace A | |
10920 | { | |
10921 | typedef int B; | |
10922 | } | |
10923 | ||
10924 | int main () | |
10925 | { | |
10926 | using A::B; | |
10927 | B b; | |
10928 | return b; | |
10929 | } | |
10930 | ||
10931 | ... | |
10932 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10933 | <52> DW_AT_decl_file : 1 | |
10934 | <53> DW_AT_decl_line : 6 | |
10935 | <54> DW_AT_import : <0x75> | |
10936 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10937 | <59> DW_AT_name : B | |
10938 | <5b> DW_AT_decl_file : 1 | |
10939 | <5c> DW_AT_decl_line : 2 | |
10940 | <5d> DW_AT_type : <0x6e> | |
10941 | ... | |
10942 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10943 | <76> DW_AT_byte_size : 4 | |
10944 | <77> DW_AT_encoding : 5 (signed) | |
10945 | ||
10946 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10947 | This case will be ignored until the gcc bug is fixed. */ | |
27aa8d6a SW |
10948 | return; |
10949 | } | |
10950 | ||
82856980 SW |
10951 | /* Figure out the local name after import. */ |
10952 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10953 | |
794684b6 SW |
10954 | /* Figure out where the statement is being imported to. */ |
10955 | import_prefix = determine_prefix (die, cu); | |
10956 | ||
10957 | /* Figure out what the scope of the imported die is and prepend it | |
10958 | to the name of the imported die. */ | |
de4affc9 | 10959 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10960 | |
f55ee35c JK |
10961 | if (imported_die->tag != DW_TAG_namespace |
10962 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10963 | { |
13387711 SW |
10964 | imported_declaration = imported_name; |
10965 | canonical_name = imported_name_prefix; | |
794684b6 | 10966 | } |
13387711 | 10967 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10968 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10969 | imported_name_prefix, |
10970 | (cu->language == language_d ? "." : "::"), | |
10971 | imported_name, (char *) NULL); | |
13387711 SW |
10972 | else |
10973 | canonical_name = imported_name; | |
794684b6 | 10974 | |
32019081 JK |
10975 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10976 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10977 | child_die = child_die->sibling) |
32019081 JK |
10978 | { |
10979 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10980 | represented by an imported module entry with an import attribute | |
10981 | referring to the module and owned entries corresponding to those | |
10982 | entities that are renamed as part of being imported. */ | |
10983 | ||
10984 | if (child_die->tag != DW_TAG_imported_declaration) | |
10985 | { | |
b98664d3 | 10986 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10987 | "- DIE at %s [in module %s]"), |
10988 | sect_offset_str (child_die->sect_off), | |
10989 | objfile_name (objfile)); | |
32019081 JK |
10990 | continue; |
10991 | } | |
10992 | ||
10993 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10994 | if (import_attr == NULL) | |
10995 | { | |
b98664d3 | 10996 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10997 | dwarf_tag_name (child_die->tag)); |
10998 | continue; | |
10999 | } | |
11000 | ||
11001 | imported_cu = cu; | |
11002 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
11003 | &imported_cu); | |
11004 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11005 | if (imported_name == NULL) | |
11006 | { | |
b98664d3 | 11007 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
11008 | "imported name - DIE at %s [in module %s]"), |
11009 | sect_offset_str (child_die->sect_off), | |
11010 | objfile_name (objfile)); | |
32019081 JK |
11011 | continue; |
11012 | } | |
11013 | ||
eb1e02fd | 11014 | excludes.push_back (imported_name); |
32019081 JK |
11015 | |
11016 | process_die (child_die, cu); | |
11017 | } | |
11018 | ||
804d2729 | 11019 | add_using_directive (using_directives (cu), |
22cee43f PMR |
11020 | import_prefix, |
11021 | canonical_name, | |
11022 | import_alias, | |
11023 | imported_declaration, | |
11024 | excludes, | |
11025 | 0, | |
11026 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11027 | } |
11028 | ||
5230b05a WT |
11029 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11030 | types, but gives them a size of zero. Starting with version 14, | |
11031 | ICC is compatible with GCC. */ | |
11032 | ||
9068261f | 11033 | static bool |
5230b05a WT |
11034 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
11035 | { | |
11036 | if (!cu->checked_producer) | |
11037 | check_producer (cu); | |
11038 | ||
11039 | return cu->producer_is_icc_lt_14; | |
11040 | } | |
11041 | ||
eb77c9df AB |
11042 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
11043 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
11044 | which says that void functions should not have a DW_AT_type. */ | |
11045 | ||
11046 | static bool | |
11047 | producer_is_icc (struct dwarf2_cu *cu) | |
11048 | { | |
11049 | if (!cu->checked_producer) | |
11050 | check_producer (cu); | |
11051 | ||
11052 | return cu->producer_is_icc; | |
11053 | } | |
11054 | ||
1b80a9fa JK |
11055 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11056 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11057 | this, it was first present in GCC release 4.3.0. */ | |
11058 | ||
9068261f | 11059 | static bool |
1b80a9fa JK |
11060 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
11061 | { | |
11062 | if (!cu->checked_producer) | |
11063 | check_producer (cu); | |
11064 | ||
11065 | return cu->producer_is_gcc_lt_4_3; | |
11066 | } | |
11067 | ||
d721ba37 PA |
11068 | static file_and_directory |
11069 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11070 | { |
d721ba37 PA |
11071 | file_and_directory res; |
11072 | ||
9291a0cd TT |
11073 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11074 | is not a source language identifier. */ | |
d721ba37 PA |
11075 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11076 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11077 | |
d721ba37 PA |
11078 | if (res.comp_dir == NULL |
11079 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11080 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11081 | { |
d721ba37 PA |
11082 | res.comp_dir_storage = ldirname (res.name); |
11083 | if (!res.comp_dir_storage.empty ()) | |
11084 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11085 | } |
d721ba37 | 11086 | if (res.comp_dir != NULL) |
9291a0cd TT |
11087 | { |
11088 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11089 | directory, get rid of it. */ | |
d721ba37 | 11090 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11091 | |
d721ba37 PA |
11092 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11093 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11094 | } |
11095 | ||
d721ba37 PA |
11096 | if (res.name == NULL) |
11097 | res.name = "<unknown>"; | |
11098 | ||
11099 | return res; | |
9291a0cd TT |
11100 | } |
11101 | ||
f4dc4d17 DE |
11102 | /* Handle DW_AT_stmt_list for a compilation unit. |
11103 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11104 | COMP_DIR is the compilation directory. LOWPC is passed to |
11105 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11106 | |
11107 | static void | |
11108 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11109 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11110 | { |
976ca316 | 11111 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
2ab95328 | 11112 | struct attribute *attr; |
527f3840 JK |
11113 | struct line_header line_header_local; |
11114 | hashval_t line_header_local_hash; | |
527f3840 JK |
11115 | void **slot; |
11116 | int decode_mapping; | |
2ab95328 | 11117 | |
f4dc4d17 DE |
11118 | gdb_assert (! cu->per_cu->is_debug_types); |
11119 | ||
2ab95328 | 11120 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e | 11121 | if (attr == NULL || !attr->form_is_unsigned ()) |
527f3840 JK |
11122 | return; |
11123 | ||
d4df075e | 11124 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
527f3840 JK |
11125 | |
11126 | /* The line header hash table is only created if needed (it exists to | |
11127 | prevent redundant reading of the line table for partial_units). | |
11128 | If we're given a partial_unit, we'll need it. If we're given a | |
11129 | compile_unit, then use the line header hash table if it's already | |
11130 | created, but don't create one just yet. */ | |
11131 | ||
976ca316 | 11132 | if (per_objfile->line_header_hash == NULL |
527f3840 | 11133 | && die->tag == DW_TAG_partial_unit) |
2ab95328 | 11134 | { |
976ca316 | 11135 | per_objfile->line_header_hash |
d15acc42 TT |
11136 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
11137 | line_header_eq_voidp, | |
11138 | free_line_header_voidp, | |
11139 | xcalloc, xfree)); | |
527f3840 | 11140 | } |
2ab95328 | 11141 | |
9c541725 | 11142 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11143 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11144 | line_header_local_hash = line_header_hash (&line_header_local); | |
976ca316 | 11145 | if (per_objfile->line_header_hash != NULL) |
527f3840 | 11146 | { |
976ca316 | 11147 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
11148 | &line_header_local, |
11149 | line_header_local_hash, NO_INSERT); | |
11150 | ||
11151 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11152 | is not present in *SLOT (since if there is something in *SLOT then | |
11153 | it will be for a partial_unit). */ | |
11154 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11155 | { |
527f3840 | 11156 | gdb_assert (*slot != NULL); |
9a3c8263 | 11157 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11158 | return; |
dee91e82 | 11159 | } |
2ab95328 | 11160 | } |
527f3840 JK |
11161 | |
11162 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11163 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11164 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11165 | if (lh == NULL) | |
527f3840 | 11166 | return; |
4c8aa72d PA |
11167 | |
11168 | cu->line_header = lh.release (); | |
11169 | cu->line_header_die_owner = die; | |
527f3840 | 11170 | |
976ca316 | 11171 | if (per_objfile->line_header_hash == NULL) |
527f3840 JK |
11172 | slot = NULL; |
11173 | else | |
11174 | { | |
976ca316 | 11175 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
11176 | &line_header_local, |
11177 | line_header_local_hash, INSERT); | |
11178 | gdb_assert (slot != NULL); | |
11179 | } | |
11180 | if (slot != NULL && *slot == NULL) | |
11181 | { | |
11182 | /* This newly decoded line number information unit will be owned | |
11183 | by line_header_hash hash table. */ | |
11184 | *slot = cu->line_header; | |
4c8aa72d | 11185 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11186 | } |
11187 | else | |
11188 | { | |
11189 | /* We cannot free any current entry in (*slot) as that struct line_header | |
dda83cd7 | 11190 | may be already used by multiple CUs. Create only temporary decoded |
527f3840 JK |
11191 | line_header for this CU - it may happen at most once for each line |
11192 | number information unit. And if we're not using line_header_hash | |
11193 | then this is what we want as well. */ | |
11194 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11195 | } |
11196 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11197 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11198 | decode_mapping); | |
fff8551c | 11199 | |
2ab95328 TT |
11200 | } |
11201 | ||
95554aad | 11202 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11203 | |
c906108c | 11204 | static void |
e7c27a73 | 11205 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11206 | { |
976ca316 SM |
11207 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
11208 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 11209 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 11210 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11211 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11212 | struct attribute *attr; | |
c906108c | 11213 | struct die_info *child_die; |
e142c38c | 11214 | CORE_ADDR baseaddr; |
6e70227d | 11215 | |
380618d6 | 11216 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 11217 | baseaddr = objfile->text_section_offset (); |
c906108c | 11218 | |
fae299cd | 11219 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11220 | |
11221 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11222 | from finish_block. */ | |
2acceee2 | 11223 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11224 | lowpc = highpc; |
3e29f34a | 11225 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11226 | |
d721ba37 | 11227 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11228 | |
f4b8a18d KW |
11229 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11230 | standardised yet. As a workaround for the language detection we fall | |
11231 | back to the DW_AT_producer string. */ | |
11232 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11233 | cu->language = language_opencl; | |
11234 | ||
3019eac3 DE |
11235 | /* Similar hack for Go. */ |
11236 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11237 | set_cu_language (DW_LANG_Go, cu); | |
11238 | ||
c24bdb02 | 11239 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11240 | |
11241 | /* Decode line number information if present. We do this before | |
11242 | processing child DIEs, so that the line header table is available | |
11243 | for DW_AT_decl_file. */ | |
d721ba37 | 11244 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11245 | |
11246 | /* Process all dies in compilation unit. */ | |
11247 | if (die->child != NULL) | |
11248 | { | |
11249 | child_die = die->child; | |
11250 | while (child_die && child_die->tag) | |
11251 | { | |
11252 | process_die (child_die, cu); | |
436c571c | 11253 | child_die = child_die->sibling; |
3019eac3 DE |
11254 | } |
11255 | } | |
11256 | ||
11257 | /* Decode macro information, if present. Dwarf 2 macro information | |
11258 | refers to information in the line number info statement program | |
11259 | header, so we can only read it if we've read the header | |
11260 | successfully. */ | |
0af92d60 JK |
11261 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11262 | if (attr == NULL) | |
11263 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
529908cb | 11264 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 DE |
11265 | { |
11266 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11267 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11268 | |
529908cb | 11269 | dwarf_decode_macros (cu, attr->as_unsigned (), 1); |
3019eac3 DE |
11270 | } |
11271 | else | |
11272 | { | |
11273 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
529908cb | 11274 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 | 11275 | { |
529908cb | 11276 | unsigned int macro_offset = attr->as_unsigned (); |
3019eac3 | 11277 | |
43f3e411 | 11278 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11279 | } |
11280 | } | |
3019eac3 DE |
11281 | } |
11282 | ||
c24bdb02 KS |
11283 | void |
11284 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11285 | { |
f4dc4d17 DE |
11286 | struct type_unit_group *tu_group; |
11287 | int first_time; | |
3019eac3 | 11288 | struct attribute *attr; |
9c541725 | 11289 | unsigned int i; |
0186c6a7 | 11290 | struct signatured_type *sig_type; |
3019eac3 | 11291 | |
f4dc4d17 | 11292 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11293 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11294 | |
c24bdb02 | 11295 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11296 | |
f4dc4d17 | 11297 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11298 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11299 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11300 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11301 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11302 | |
11303 | /* If we've already processed this stmt_list there's no real need to | |
11304 | do it again, we could fake it and just recreate the part we need | |
11305 | (file name,index -> symtab mapping). If data shows this optimization | |
11306 | is useful we can do it then. */ | |
8adb8487 TT |
11307 | type_unit_group_unshareable *tug_unshare |
11308 | = per_objfile->get_type_unit_group_unshareable (tu_group); | |
11309 | first_time = tug_unshare->compunit_symtab == NULL; | |
f4dc4d17 DE |
11310 | |
11311 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11312 | debug info. */ | |
fff8551c | 11313 | line_header_up lh; |
d4df075e | 11314 | if (attr != NULL && attr->form_is_unsigned ()) |
3019eac3 | 11315 | { |
d4df075e | 11316 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
c24bdb02 | 11317 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11318 | } |
11319 | if (lh == NULL) | |
11320 | { | |
11321 | if (first_time) | |
c24bdb02 | 11322 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11323 | else |
11324 | { | |
8adb8487 | 11325 | gdb_assert (tug_unshare->symtabs == NULL); |
c24bdb02 | 11326 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11327 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11328 | m_builder.reset (new struct buildsym_compunit |
11329 | (COMPUNIT_OBJFILE (cust), "", | |
11330 | COMPUNIT_DIRNAME (cust), | |
11331 | compunit_language (cust), | |
11332 | 0, cust)); | |
770479f2 | 11333 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11334 | } |
f4dc4d17 | 11335 | return; |
3019eac3 DE |
11336 | } |
11337 | ||
c24bdb02 KS |
11338 | line_header = lh.release (); |
11339 | line_header_die_owner = die; | |
3019eac3 | 11340 | |
f4dc4d17 DE |
11341 | if (first_time) |
11342 | { | |
c24bdb02 | 11343 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11344 | |
1fd60fc0 DE |
11345 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11346 | still initializing it, and our caller (a few levels up) | |
11347 | process_full_type_unit still needs to know if this is the first | |
11348 | time. */ | |
11349 | ||
8adb8487 | 11350 | tug_unshare->symtabs |
4ac93832 TT |
11351 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, |
11352 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 11353 | |
7ba99d21 AT |
11354 | auto &file_names = line_header->file_names (); |
11355 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11356 | { |
7ba99d21 | 11357 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11358 | dwarf2_start_subfile (this, fe.name, |
11359 | fe.include_dir (line_header)); | |
11360 | buildsym_compunit *b = get_builder (); | |
11361 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11362 | { |
4c8aa72d PA |
11363 | /* NOTE: start_subfile will recognize when it's been |
11364 | passed a file it has already seen. So we can't | |
11365 | assume there's a simple mapping from | |
11366 | cu->line_header->file_names to subfiles, plus | |
11367 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11368 | b->get_current_subfile ()->symtab |
11369 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11370 | } |
11371 | ||
c24bdb02 | 11372 | fe.symtab = b->get_current_subfile ()->symtab; |
8adb8487 | 11373 | tug_unshare->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11374 | } |
11375 | } | |
11376 | else | |
3019eac3 | 11377 | { |
c24bdb02 | 11378 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11379 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11380 | m_builder.reset (new struct buildsym_compunit |
11381 | (COMPUNIT_OBJFILE (cust), "", | |
11382 | COMPUNIT_DIRNAME (cust), | |
11383 | compunit_language (cust), | |
11384 | 0, cust)); | |
770479f2 | 11385 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11386 | |
7ba99d21 AT |
11387 | auto &file_names = line_header->file_names (); |
11388 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11389 | { |
7ba99d21 | 11390 | file_entry &fe = file_names[i]; |
8adb8487 | 11391 | fe.symtab = tug_unshare->symtabs[i]; |
f4dc4d17 | 11392 | } |
3019eac3 DE |
11393 | } |
11394 | ||
f4dc4d17 DE |
11395 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11396 | so they don't have a "real" (so to speak) symtab anyway. | |
11397 | There is later code that will assign the main symtab to all symbols | |
11398 | that don't have one. We need to handle the case of a symbol with a | |
11399 | missing symtab (DW_AT_decl_file) anyway. */ | |
11400 | } | |
3019eac3 | 11401 | |
f4dc4d17 DE |
11402 | /* Process DW_TAG_type_unit. |
11403 | For TUs we want to skip the first top level sibling if it's not the | |
11404 | actual type being defined by this TU. In this case the first top | |
11405 | level sibling is there to provide context only. */ | |
3019eac3 | 11406 | |
f4dc4d17 DE |
11407 | static void |
11408 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11409 | { | |
11410 | struct die_info *child_die; | |
3019eac3 | 11411 | |
f4dc4d17 DE |
11412 | prepare_one_comp_unit (cu, die, language_minimal); |
11413 | ||
11414 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11415 | We do this before processing child DIEs, so that the line header table | |
11416 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11417 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11418 | |
11419 | if (die->child != NULL) | |
11420 | { | |
11421 | child_die = die->child; | |
11422 | while (child_die && child_die->tag) | |
11423 | { | |
11424 | process_die (child_die, cu); | |
436c571c | 11425 | child_die = child_die->sibling; |
f4dc4d17 DE |
11426 | } |
11427 | } | |
3019eac3 DE |
11428 | } |
11429 | \f | |
80626a55 DE |
11430 | /* DWO/DWP files. |
11431 | ||
11432 | http://gcc.gnu.org/wiki/DebugFission | |
11433 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11434 | ||
11435 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11436 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11437 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11438 | |
11439 | static hashval_t | |
11440 | hash_dwo_file (const void *item) | |
11441 | { | |
9a3c8263 | 11442 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11443 | hashval_t hash; |
3019eac3 | 11444 | |
a2ce51a0 DE |
11445 | hash = htab_hash_string (dwo_file->dwo_name); |
11446 | if (dwo_file->comp_dir != NULL) | |
11447 | hash += htab_hash_string (dwo_file->comp_dir); | |
11448 | return hash; | |
3019eac3 DE |
11449 | } |
11450 | ||
11451 | static int | |
11452 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11453 | { | |
9a3c8263 SM |
11454 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11455 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11456 | |
a2ce51a0 DE |
11457 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11458 | return 0; | |
11459 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11460 | return lhs->comp_dir == rhs->comp_dir; | |
11461 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11462 | } |
11463 | ||
11464 | /* Allocate a hash table for DWO files. */ | |
11465 | ||
51ac9db5 | 11466 | static htab_up |
298e9637 | 11467 | allocate_dwo_file_hash_table () |
3019eac3 | 11468 | { |
51ac9db5 SM |
11469 | auto delete_dwo_file = [] (void *item) |
11470 | { | |
11471 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11472 | ||
11473 | delete dwo_file; | |
11474 | }; | |
11475 | ||
bc68fb19 TT |
11476 | return htab_up (htab_create_alloc (41, |
11477 | hash_dwo_file, | |
11478 | eq_dwo_file, | |
11479 | delete_dwo_file, | |
11480 | xcalloc, xfree)); | |
3019eac3 DE |
11481 | } |
11482 | ||
80626a55 DE |
11483 | /* Lookup DWO file DWO_NAME. */ |
11484 | ||
11485 | static void ** | |
976ca316 | 11486 | lookup_dwo_file_slot (dwarf2_per_objfile *per_objfile, |
ed2dc618 SM |
11487 | const char *dwo_name, |
11488 | const char *comp_dir) | |
80626a55 DE |
11489 | { |
11490 | struct dwo_file find_entry; | |
11491 | void **slot; | |
11492 | ||
976ca316 SM |
11493 | if (per_objfile->per_bfd->dwo_files == NULL) |
11494 | per_objfile->per_bfd->dwo_files = allocate_dwo_file_hash_table (); | |
80626a55 | 11495 | |
0ac5b59e DE |
11496 | find_entry.dwo_name = dwo_name; |
11497 | find_entry.comp_dir = comp_dir; | |
976ca316 | 11498 | slot = htab_find_slot (per_objfile->per_bfd->dwo_files.get (), &find_entry, |
51ac9db5 | 11499 | INSERT); |
80626a55 DE |
11500 | |
11501 | return slot; | |
11502 | } | |
11503 | ||
3019eac3 DE |
11504 | static hashval_t |
11505 | hash_dwo_unit (const void *item) | |
11506 | { | |
9a3c8263 | 11507 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11508 | |
11509 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11510 | return dwo_unit->signature; | |
11511 | } | |
11512 | ||
11513 | static int | |
11514 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11515 | { | |
9a3c8263 SM |
11516 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11517 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11518 | |
11519 | /* The signature is assumed to be unique within the DWO file. | |
11520 | So while object file CU dwo_id's always have the value zero, | |
11521 | that's OK, assuming each object file DWO file has only one CU, | |
11522 | and that's the rule for now. */ | |
11523 | return lhs->signature == rhs->signature; | |
11524 | } | |
11525 | ||
11526 | /* Allocate a hash table for DWO CUs,TUs. | |
11527 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11528 | ||
b0b6a987 | 11529 | static htab_up |
298e9637 | 11530 | allocate_dwo_unit_table () |
3019eac3 DE |
11531 | { |
11532 | /* Start out with a pretty small number. | |
11533 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11534 | return htab_up (htab_create_alloc (3, |
11535 | hash_dwo_unit, | |
11536 | eq_dwo_unit, | |
11537 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11538 | } |
11539 | ||
19c3d4c9 | 11540 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11541 | |
11542 | static void | |
19c3d4c9 DE |
11543 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11544 | const gdb_byte *info_ptr, | |
11545 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11546 | struct dwo_file *dwo_file, |
11547 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11548 | { |
11549 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11550 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11551 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11552 | |
a084a2a6 AT |
11553 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11554 | if (!signature.has_value ()) | |
3019eac3 | 11555 | { |
b98664d3 | 11556 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11557 | " its dwo_id [in module %s]"), |
9d8780f0 | 11558 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11559 | return; |
11560 | } | |
11561 | ||
3019eac3 | 11562 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11563 | dwo_unit->signature = *signature; |
8a0459fd | 11564 | dwo_unit->section = section; |
9c541725 | 11565 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11566 | dwo_unit->length = cu->per_cu->length; |
11567 | ||
6f738b01 SM |
11568 | dwarf_read_debug_printf (" offset %s, dwo_id %s", |
11569 | sect_offset_str (sect_off), | |
11570 | hex_string (dwo_unit->signature)); | |
3019eac3 DE |
11571 | } |
11572 | ||
33c5cd75 | 11573 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11574 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11575 | |
33c5cd75 | 11576 | static void |
976ca316 | 11577 | create_cus_hash_table (dwarf2_per_objfile *per_objfile, |
18a8505e | 11578 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11579 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 | 11580 | { |
976ca316 SM |
11581 | struct objfile *objfile = per_objfile->objfile; |
11582 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
d521ce57 | 11583 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11584 | |
96b79293 | 11585 | section.read (objfile); |
33c5cd75 | 11586 | info_ptr = section.buffer; |
3019eac3 DE |
11587 | |
11588 | if (info_ptr == NULL) | |
33c5cd75 | 11589 | return; |
3019eac3 | 11590 | |
6f738b01 SM |
11591 | dwarf_read_debug_printf ("Reading %s for %s:", |
11592 | section.get_name (), | |
11593 | section.get_file_name ()); | |
3019eac3 | 11594 | |
33c5cd75 | 11595 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11596 | while (info_ptr < end_ptr) |
11597 | { | |
11598 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11599 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11600 | struct dwo_unit *dwo_unit; |
11601 | void **slot; | |
11602 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11603 | |
11604 | memset (&per_cu, 0, sizeof (per_cu)); | |
1859c670 | 11605 | per_cu.per_bfd = per_bfd; |
3019eac3 | 11606 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11607 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11608 | per_cu.section = §ion; | |
11609 | ||
976ca316 | 11610 | cutu_reader reader (&per_cu, per_objfile, cu, &dwo_file); |
c0ab21c2 TT |
11611 | if (!reader.dummy_p) |
11612 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11613 | &dwo_file, &read_unit); |
33c5cd75 DB |
11614 | info_ptr += per_cu.length; |
11615 | ||
11616 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11617 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11618 | continue; |
3019eac3 | 11619 | |
33c5cd75 | 11620 | if (cus_htab == NULL) |
298e9637 | 11621 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11622 | |
1859c670 | 11623 | dwo_unit = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 11624 | struct dwo_unit); |
c0ab21c2 | 11625 | *dwo_unit = read_unit; |
b0b6a987 | 11626 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11627 | gdb_assert (slot != NULL); |
11628 | if (*slot != NULL) | |
19c3d4c9 | 11629 | { |
33c5cd75 DB |
11630 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11631 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11632 | |
b98664d3 | 11633 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11634 | " the entry at offset %s, signature %s"), |
11635 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11636 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11637 | } |
33c5cd75 | 11638 | *slot = (void *)dwo_unit; |
3019eac3 | 11639 | } |
3019eac3 DE |
11640 | } |
11641 | ||
80626a55 DE |
11642 | /* DWP file .debug_{cu,tu}_index section format: |
11643 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
d2854d8d CT |
11644 | [ref: http://dwarfstd.org/doc/DWARF5.pdf, sect 7.3.5 "DWARF Package Files"] |
11645 | ||
11646 | DWP Versions 1 & 2 are older, pre-standard format versions. The first | |
11647 | officially standard DWP format was published with DWARF v5 and is called | |
11648 | Version 5. There are no versions 3 or 4. | |
80626a55 | 11649 | |
d2415c6c DE |
11650 | DWP Version 1: |
11651 | ||
80626a55 DE |
11652 | Both index sections have the same format, and serve to map a 64-bit |
11653 | signature to a set of section numbers. Each section begins with a header, | |
11654 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11655 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11656 | aligned at 8-byte boundaries in the file. | |
11657 | ||
d2415c6c DE |
11658 | The index section header consists of: |
11659 | ||
11660 | V, 32 bit version number | |
11661 | -, 32 bits unused | |
11662 | N, 32 bit number of compilation units or type units in the index | |
11663 | M, 32 bit number of slots in the hash table | |
80626a55 | 11664 | |
d2415c6c | 11665 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11666 | |
d2415c6c DE |
11667 | The hash table begins at offset 16 in the section, and consists of an array |
11668 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11669 | order of the application binary). Unused slots in the hash table are 0. | |
11670 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11671 | |
d2415c6c DE |
11672 | The parallel table begins immediately after the hash table |
11673 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11674 | array of 32-bit indexes (using the byte order of the application binary), | |
11675 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11676 | table contains a 32-bit index into the pool of section numbers. For unused | |
11677 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11678 | |
73869dc2 DE |
11679 | The pool of section numbers begins immediately following the hash table |
11680 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11681 | section numbers consists of an array of 32-bit words (using the byte order | |
11682 | of the application binary). Each item in the array is indexed starting | |
11683 | from 0. The hash table entry provides the index of the first section | |
11684 | number in the set. Additional section numbers in the set follow, and the | |
11685 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11686 | ||
11687 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11688 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11689 | be the second entry. Other members of the set may follow in any order. | |
11690 | ||
11691 | --- | |
11692 | ||
d2854d8d | 11693 | DWP Versions 2 and 5: |
73869dc2 | 11694 | |
d2854d8d | 11695 | DWP Versions 2 and 5 combine all the .debug_info, etc. sections into one, |
73869dc2 DE |
11696 | and the entries in the index tables are now offsets into these sections. |
11697 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11698 | section. | |
11699 | ||
11700 | Index Section Contents: | |
11701 | Header | |
11702 | Hash Table of Signatures dwp_hash_table.hash_table | |
11703 | Parallel Table of Indices dwp_hash_table.unit_table | |
d2854d8d CT |
11704 | Table of Section Offsets dwp_hash_table.{v2|v5}.{section_ids,offsets} |
11705 | Table of Section Sizes dwp_hash_table.{v2|v5}.sizes | |
73869dc2 DE |
11706 | |
11707 | The index section header consists of: | |
11708 | ||
11709 | V, 32 bit version number | |
11710 | L, 32 bit number of columns in the table of section offsets | |
11711 | N, 32 bit number of compilation units or type units in the index | |
11712 | M, 32 bit number of slots in the hash table | |
11713 | ||
11714 | Numbers are recorded using the byte order of the application binary. | |
11715 | ||
11716 | The hash table has the same format as version 1. | |
11717 | The parallel table of indices has the same format as version 1, | |
11718 | except that the entries are origin-1 indices into the table of sections | |
11719 | offsets and the table of section sizes. | |
11720 | ||
11721 | The table of offsets begins immediately following the parallel table | |
11722 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11723 | a two-dimensional array of 32-bit words (using the byte order of the | |
11724 | application binary), with L columns and N+1 rows, in row-major order. | |
11725 | Each row in the array is indexed starting from 0. The first row provides | |
11726 | a key to the remaining rows: each column in this row provides an identifier | |
11727 | for a debug section, and the offsets in the same column of subsequent rows | |
d2854d8d | 11728 | refer to that section. The section identifiers for Version 2 are: |
73869dc2 DE |
11729 | |
11730 | DW_SECT_INFO 1 .debug_info.dwo | |
11731 | DW_SECT_TYPES 2 .debug_types.dwo | |
11732 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11733 | DW_SECT_LINE 4 .debug_line.dwo | |
11734 | DW_SECT_LOC 5 .debug_loc.dwo | |
11735 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11736 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11737 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11738 | ||
d2854d8d CT |
11739 | The section identifiers for Version 5 are: |
11740 | ||
11741 | DW_SECT_INFO_V5 1 .debug_info.dwo | |
11742 | DW_SECT_RESERVED_V5 2 -- | |
11743 | DW_SECT_ABBREV_V5 3 .debug_abbrev.dwo | |
11744 | DW_SECT_LINE_V5 4 .debug_line.dwo | |
11745 | DW_SECT_LOCLISTS_V5 5 .debug_loclists.dwo | |
11746 | DW_SECT_STR_OFFSETS_V5 6 .debug_str_offsets.dwo | |
11747 | DW_SECT_MACRO_V5 7 .debug_macro.dwo | |
11748 | DW_SECT_RNGLISTS_V5 8 .debug_rnglists.dwo | |
11749 | ||
73869dc2 DE |
11750 | The offsets provided by the CU and TU index sections are the base offsets |
11751 | for the contributions made by each CU or TU to the corresponding section | |
11752 | in the package file. Each CU and TU header contains an abbrev_offset | |
11753 | field, used to find the abbreviations table for that CU or TU within the | |
11754 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11755 | be interpreted as relative to the base offset given in the index section. | |
11756 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11757 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11758 | and offsets into other debug sections obtained from DWARF attributes should | |
11759 | also be interpreted as relative to the corresponding base offset. | |
11760 | ||
11761 | The table of sizes begins immediately following the table of offsets. | |
11762 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11763 | with L columns and N rows, in row-major order. Each row in the array is | |
11764 | indexed starting from 1 (row 0 is shared by the two tables). | |
11765 | ||
11766 | --- | |
11767 | ||
11768 | Hash table lookup is handled the same in version 1 and 2: | |
11769 | ||
11770 | We assume that N and M will not exceed 2^32 - 1. | |
11771 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11772 | ||
d2415c6c DE |
11773 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11774 | in the hash table is located as follows: | |
80626a55 | 11775 | |
d2415c6c DE |
11776 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11777 | the low-order k bits all set to 1. | |
80626a55 | 11778 | |
d2415c6c | 11779 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11780 | |
d2415c6c DE |
11781 | 3) If the hash table entry at index H matches the signature, use that |
11782 | entry. If the hash table entry at index H is unused (all zeroes), | |
11783 | terminate the search: the signature is not present in the table. | |
80626a55 | 11784 | |
d2415c6c | 11785 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11786 | |
d2415c6c | 11787 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11788 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11789 | |
11790 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11791 | .debug_{info,types}.dwo in DWP_FILE. | |
11792 | Returns NULL if there isn't one. | |
11793 | Note: This function processes DWP files only, not DWO files. */ | |
11794 | ||
11795 | static struct dwp_hash_table * | |
976ca316 | 11796 | create_dwp_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11797 | struct dwp_file *dwp_file, int is_debug_types) |
80626a55 | 11798 | { |
976ca316 | 11799 | struct objfile *objfile = per_objfile->objfile; |
400174b1 | 11800 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11801 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11802 | struct dwarf2_section_info *index; |
73869dc2 | 11803 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11804 | struct dwp_hash_table *htab; |
11805 | ||
11806 | if (is_debug_types) | |
11807 | index = &dwp_file->sections.tu_index; | |
11808 | else | |
11809 | index = &dwp_file->sections.cu_index; | |
11810 | ||
96b79293 | 11811 | if (index->empty ()) |
80626a55 | 11812 | return NULL; |
96b79293 | 11813 | index->read (objfile); |
80626a55 DE |
11814 | |
11815 | index_ptr = index->buffer; | |
11816 | index_end = index_ptr + index->size; | |
11817 | ||
d2854d8d CT |
11818 | /* For Version 5, the version is really 2 bytes of data & 2 bytes of padding. |
11819 | For now it's safe to just read 4 bytes (particularly as it's difficult to | |
11820 | tell if you're dealing with Version 5 before you've read the version). */ | |
80626a55 | 11821 | version = read_4_bytes (dbfd, index_ptr); |
73869dc2 | 11822 | index_ptr += 4; |
d2854d8d | 11823 | if (version == 2 || version == 5) |
73869dc2 DE |
11824 | nr_columns = read_4_bytes (dbfd, index_ptr); |
11825 | else | |
11826 | nr_columns = 0; | |
11827 | index_ptr += 4; | |
80626a55 DE |
11828 | nr_units = read_4_bytes (dbfd, index_ptr); |
11829 | index_ptr += 4; | |
11830 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11831 | index_ptr += 4; | |
11832 | ||
d2854d8d | 11833 | if (version != 1 && version != 2 && version != 5) |
80626a55 | 11834 | { |
21aa081e | 11835 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11836 | " [in module %s]"), |
21aa081e | 11837 | pulongest (version), dwp_file->name); |
80626a55 DE |
11838 | } |
11839 | if (nr_slots != (nr_slots & -nr_slots)) | |
11840 | { | |
21aa081e | 11841 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11842 | " is not power of 2 [in module %s]"), |
21aa081e | 11843 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11844 | } |
11845 | ||
976ca316 | 11846 | htab = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwp_hash_table); |
73869dc2 DE |
11847 | htab->version = version; |
11848 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11849 | htab->nr_units = nr_units; |
11850 | htab->nr_slots = nr_slots; | |
11851 | htab->hash_table = index_ptr; | |
11852 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11853 | |
11854 | /* Exit early if the table is empty. */ | |
11855 | if (nr_slots == 0 || nr_units == 0 | |
d2854d8d CT |
11856 | || (version == 2 && nr_columns == 0) |
11857 | || (version == 5 && nr_columns == 0)) | |
73869dc2 DE |
11858 | { |
11859 | /* All must be zero. */ | |
11860 | if (nr_slots != 0 || nr_units != 0 | |
d2854d8d CT |
11861 | || (version == 2 && nr_columns != 0) |
11862 | || (version == 5 && nr_columns != 0)) | |
73869dc2 | 11863 | { |
b98664d3 | 11864 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11865 | " all zero [in modules %s]"), |
11866 | dwp_file->name); | |
11867 | } | |
11868 | return htab; | |
11869 | } | |
11870 | ||
11871 | if (version == 1) | |
11872 | { | |
11873 | htab->section_pool.v1.indices = | |
11874 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11875 | /* It's harder to decide whether the section is too small in v1. | |
11876 | V1 is deprecated anyway so we punt. */ | |
11877 | } | |
d2854d8d | 11878 | else if (version == 2) |
73869dc2 DE |
11879 | { |
11880 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11881 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11882 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11883 | /* Reverse map for error checking. */ |
11884 | int ids_seen[DW_SECT_MAX + 1]; | |
11885 | int i; | |
11886 | ||
11887 | if (nr_columns < 2) | |
11888 | { | |
11889 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11890 | " in section table [in module %s]"), | |
11891 | dwp_file->name); | |
11892 | } | |
11893 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11894 | { | |
11895 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11896 | " in section table [in module %s]"), | |
11897 | dwp_file->name); | |
11898 | } | |
04fd5eed GB |
11899 | memset (ids, 255, sizeof_ids); |
11900 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11901 | for (i = 0; i < nr_columns; ++i) |
11902 | { | |
11903 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11904 | ||
11905 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11906 | { | |
11907 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11908 | " in section table [in module %s]"), | |
11909 | id, dwp_file->name); | |
11910 | } | |
11911 | if (ids_seen[id] != -1) | |
11912 | { | |
11913 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11914 | " id %d in section table [in module %s]"), | |
11915 | id, dwp_file->name); | |
11916 | } | |
11917 | ids_seen[id] = i; | |
11918 | ids[i] = id; | |
11919 | } | |
11920 | /* Must have exactly one info or types section. */ | |
11921 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11922 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11923 | != 1) | |
11924 | { | |
11925 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11926 | " DWO info/types section [in module %s]"), | |
11927 | dwp_file->name); | |
11928 | } | |
11929 | /* Must have an abbrev section. */ | |
11930 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11931 | { | |
11932 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11933 | " section [in module %s]"), | |
11934 | dwp_file->name); | |
11935 | } | |
11936 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11937 | htab->section_pool.v2.sizes = | |
11938 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11939 | * nr_units * nr_columns); | |
11940 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11941 | * nr_units * nr_columns)) | |
11942 | > index_end) | |
11943 | { | |
11944 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11945 | " [in module %s]"), | |
11946 | dwp_file->name); | |
11947 | } | |
11948 | } | |
d2854d8d CT |
11949 | else /* version == 5 */ |
11950 | { | |
11951 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11952 | int *ids = htab->section_pool.v5.section_ids; | |
11953 | size_t sizeof_ids = sizeof (htab->section_pool.v5.section_ids); | |
11954 | /* Reverse map for error checking. */ | |
11955 | int ids_seen[DW_SECT_MAX_V5 + 1]; | |
11956 | ||
11957 | if (nr_columns < 2) | |
11958 | { | |
11959 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11960 | " in section table [in module %s]"), | |
11961 | dwp_file->name); | |
11962 | } | |
11963 | if (nr_columns > MAX_NR_V5_DWO_SECTIONS) | |
11964 | { | |
11965 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11966 | " in section table [in module %s]"), | |
11967 | dwp_file->name); | |
11968 | } | |
11969 | memset (ids, 255, sizeof_ids); | |
11970 | memset (ids_seen, 255, sizeof (ids_seen)); | |
11971 | for (int i = 0; i < nr_columns; ++i) | |
11972 | { | |
11973 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11974 | ||
11975 | if (id < DW_SECT_MIN || id > DW_SECT_MAX_V5) | |
11976 | { | |
11977 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11978 | " in section table [in module %s]"), | |
11979 | id, dwp_file->name); | |
11980 | } | |
11981 | if (ids_seen[id] != -1) | |
11982 | { | |
11983 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11984 | " id %d in section table [in module %s]"), | |
11985 | id, dwp_file->name); | |
11986 | } | |
11987 | ids_seen[id] = i; | |
11988 | ids[i] = id; | |
11989 | } | |
11990 | /* Must have seen an info section. */ | |
11991 | if (ids_seen[DW_SECT_INFO_V5] == -1) | |
11992 | { | |
11993 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11994 | " DWO info/types section [in module %s]"), | |
11995 | dwp_file->name); | |
11996 | } | |
11997 | /* Must have an abbrev section. */ | |
11998 | if (ids_seen[DW_SECT_ABBREV_V5] == -1) | |
11999 | { | |
12000 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
12001 | " section [in module %s]"), | |
12002 | dwp_file->name); | |
12003 | } | |
12004 | htab->section_pool.v5.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12005 | htab->section_pool.v5.sizes | |
12006 | = htab->section_pool.v5.offsets + (sizeof (uint32_t) | |
12007 | * nr_units * nr_columns); | |
12008 | if ((htab->section_pool.v5.sizes + (sizeof (uint32_t) | |
12009 | * nr_units * nr_columns)) | |
12010 | > index_end) | |
12011 | { | |
12012 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12013 | " [in module %s]"), | |
12014 | dwp_file->name); | |
12015 | } | |
12016 | } | |
80626a55 DE |
12017 | |
12018 | return htab; | |
12019 | } | |
12020 | ||
12021 | /* Update SECTIONS with the data from SECTP. | |
12022 | ||
5bb6e9dd TT |
12023 | This function is like the other "locate" section routines, but in |
12024 | this context the sections to read comes from the DWP V1 hash table, | |
12025 | not the full ELF section table. | |
80626a55 DE |
12026 | |
12027 | The result is non-zero for success, or zero if an error was found. */ | |
12028 | ||
12029 | static int | |
73869dc2 DE |
12030 | locate_v1_virtual_dwo_sections (asection *sectp, |
12031 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
12032 | { |
12033 | const struct dwop_section_names *names = &dwop_section_names; | |
12034 | ||
12035 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12036 | { | |
12037 | /* There can be only one. */ | |
049412e3 | 12038 | if (sections->abbrev.s.section != NULL) |
80626a55 | 12039 | return 0; |
049412e3 | 12040 | sections->abbrev.s.section = sectp; |
fd361982 | 12041 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12042 | } |
12043 | else if (section_is_p (sectp->name, &names->info_dwo) | |
12044 | || section_is_p (sectp->name, &names->types_dwo)) | |
12045 | { | |
12046 | /* There can be only one. */ | |
049412e3 | 12047 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 12048 | return 0; |
049412e3 | 12049 | sections->info_or_types.s.section = sectp; |
fd361982 | 12050 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
12051 | } |
12052 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12053 | { | |
12054 | /* There can be only one. */ | |
049412e3 | 12055 | if (sections->line.s.section != NULL) |
80626a55 | 12056 | return 0; |
049412e3 | 12057 | sections->line.s.section = sectp; |
fd361982 | 12058 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12059 | } |
12060 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12061 | { | |
12062 | /* There can be only one. */ | |
049412e3 | 12063 | if (sections->loc.s.section != NULL) |
80626a55 | 12064 | return 0; |
049412e3 | 12065 | sections->loc.s.section = sectp; |
fd361982 | 12066 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
12067 | } |
12068 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12069 | { | |
12070 | /* There can be only one. */ | |
049412e3 | 12071 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12072 | return 0; |
049412e3 | 12073 | sections->macinfo.s.section = sectp; |
fd361982 | 12074 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12075 | } |
12076 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12077 | { | |
12078 | /* There can be only one. */ | |
049412e3 | 12079 | if (sections->macro.s.section != NULL) |
80626a55 | 12080 | return 0; |
049412e3 | 12081 | sections->macro.s.section = sectp; |
fd361982 | 12082 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12083 | } |
12084 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12085 | { | |
12086 | /* There can be only one. */ | |
049412e3 | 12087 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12088 | return 0; |
049412e3 | 12089 | sections->str_offsets.s.section = sectp; |
fd361982 | 12090 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12091 | } |
12092 | else | |
12093 | { | |
12094 | /* No other kind of section is valid. */ | |
12095 | return 0; | |
12096 | } | |
12097 | ||
12098 | return 1; | |
12099 | } | |
12100 | ||
73869dc2 DE |
12101 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12102 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12103 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12104 | This is for DWP version 1 files. */ | |
80626a55 DE |
12105 | |
12106 | static struct dwo_unit * | |
976ca316 | 12107 | create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12108 | struct dwp_file *dwp_file, |
73869dc2 DE |
12109 | uint32_t unit_index, |
12110 | const char *comp_dir, | |
12111 | ULONGEST signature, int is_debug_types) | |
80626a55 | 12112 | { |
73869dc2 DE |
12113 | const struct dwp_hash_table *dwp_htab = |
12114 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12115 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
12116 | const char *kind = is_debug_types ? "TU" : "CU"; |
12117 | struct dwo_file *dwo_file; | |
12118 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12119 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12120 | void **dwo_file_slot; |
80626a55 DE |
12121 | int i; |
12122 | ||
73869dc2 DE |
12123 | gdb_assert (dwp_file->version == 1); |
12124 | ||
6f738b01 SM |
12125 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V1 file: %s", |
12126 | kind, pulongest (unit_index), hex_string (signature), | |
12127 | dwp_file->name); | |
80626a55 | 12128 | |
19ac8c2e | 12129 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12130 | Put a limit on the number of sections we look for so that bad data |
12131 | doesn't cause us to loop forever. */ | |
12132 | ||
73869dc2 | 12133 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12134 | (1 /* .debug_info or .debug_types */ \ |
12135 | + 1 /* .debug_abbrev */ \ | |
12136 | + 1 /* .debug_line */ \ | |
12137 | + 1 /* .debug_loc */ \ | |
12138 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12139 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12140 | + 1 /* trailing zero */) |
12141 | ||
12142 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12143 | |
73869dc2 | 12144 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12145 | { |
12146 | asection *sectp; | |
12147 | uint32_t section_nr = | |
12148 | read_4_bytes (dbfd, | |
73869dc2 DE |
12149 | dwp_htab->section_pool.v1.indices |
12150 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12151 | |
12152 | if (section_nr == 0) | |
12153 | break; | |
12154 | if (section_nr >= dwp_file->num_sections) | |
12155 | { | |
12156 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12157 | " [in module %s]"), | |
12158 | dwp_file->name); | |
12159 | } | |
12160 | ||
12161 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12162 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12163 | { |
12164 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12165 | " [in module %s]"), | |
12166 | dwp_file->name); | |
12167 | } | |
12168 | } | |
12169 | ||
12170 | if (i < 2 | |
96b79293 TT |
12171 | || sections.info_or_types.empty () |
12172 | || sections.abbrev.empty ()) | |
80626a55 DE |
12173 | { |
12174 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12175 | " [in module %s]"), | |
12176 | dwp_file->name); | |
12177 | } | |
73869dc2 | 12178 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12179 | { |
12180 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12181 | " [in module %s]"), | |
12182 | dwp_file->name); | |
12183 | } | |
12184 | ||
12185 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12186 | have dwo_unit "live" in that. At least for now. | |
12187 | ||
12188 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12189 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12190 | file, we can combine them back into a virtual DWO file to save space |
12191 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12192 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12193 | ||
791afaa2 TT |
12194 | std::string virtual_dwo_name = |
12195 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
12196 | sections.abbrev.get_id (), |
12197 | sections.line.get_id (), | |
12198 | sections.loc.get_id (), | |
12199 | sections.str_offsets.get_id ()); | |
80626a55 | 12200 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12201 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12202 | comp_dir); |
80626a55 DE |
12203 | /* Create one if necessary. */ |
12204 | if (*dwo_file_slot == NULL) | |
12205 | { | |
6f738b01 SM |
12206 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12207 | virtual_dwo_name.c_str ()); | |
12208 | ||
51ac9db5 | 12209 | dwo_file = new struct dwo_file; |
976ca316 | 12210 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
0ac5b59e | 12211 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12212 | dwo_file->sections.abbrev = sections.abbrev; |
12213 | dwo_file->sections.line = sections.line; | |
12214 | dwo_file->sections.loc = sections.loc; | |
12215 | dwo_file->sections.macinfo = sections.macinfo; | |
12216 | dwo_file->sections.macro = sections.macro; | |
12217 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12218 | /* The "str" section is global to the entire DWP file. */ | |
12219 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12220 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12221 | there's no need to record it in dwo_file. |
12222 | Also, we can't simply record type sections in dwo_file because | |
12223 | we record a pointer into the vector in dwo_unit. As we collect more | |
12224 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12225 | for it, invalidating all copies of pointers into the previous |
12226 | contents. */ | |
80626a55 DE |
12227 | *dwo_file_slot = dwo_file; |
12228 | } | |
12229 | else | |
12230 | { | |
6f738b01 SM |
12231 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12232 | virtual_dwo_name.c_str ()); | |
12233 | ||
9a3c8263 | 12234 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12235 | } |
80626a55 | 12236 | |
976ca316 | 12237 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
80626a55 DE |
12238 | dwo_unit->dwo_file = dwo_file; |
12239 | dwo_unit->signature = signature; | |
8d749320 | 12240 | dwo_unit->section = |
976ca316 | 12241 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
8a0459fd | 12242 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12243 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12244 | |
12245 | return dwo_unit; | |
12246 | } | |
12247 | ||
d2854d8d CT |
12248 | /* Subroutine of create_dwo_unit_in_dwp_v2 and create_dwo_unit_in_dwp_v5 to |
12249 | simplify them. Given a pointer to the containing section SECTION, and | |
12250 | OFFSET,SIZE of the piece within that section used by a TU/CU, return a | |
12251 | virtual section of just that piece. */ | |
73869dc2 DE |
12252 | |
12253 | static struct dwarf2_section_info | |
d2854d8d CT |
12254 | create_dwp_v2_or_v5_section (dwarf2_per_objfile *per_objfile, |
12255 | struct dwarf2_section_info *section, | |
12256 | bfd_size_type offset, bfd_size_type size) | |
73869dc2 DE |
12257 | { |
12258 | struct dwarf2_section_info result; | |
12259 | asection *sectp; | |
12260 | ||
12261 | gdb_assert (section != NULL); | |
12262 | gdb_assert (!section->is_virtual); | |
12263 | ||
12264 | memset (&result, 0, sizeof (result)); | |
12265 | result.s.containing_section = section; | |
dc4ccb6f | 12266 | result.is_virtual = true; |
73869dc2 DE |
12267 | |
12268 | if (size == 0) | |
12269 | return result; | |
12270 | ||
96b79293 | 12271 | sectp = section->get_bfd_section (); |
73869dc2 DE |
12272 | |
12273 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12274 | bounds of the real section. This is a pretty-rare event, so just | |
12275 | flag an error (easier) instead of a warning and trying to cope. */ | |
12276 | if (sectp == NULL | |
fd361982 | 12277 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 12278 | { |
d2854d8d | 12279 | error (_("Dwarf Error: Bad DWP V2 or V5 section info, doesn't fit" |
73869dc2 | 12280 | " in section %s [in module %s]"), |
fd361982 | 12281 | sectp ? bfd_section_name (sectp) : "<unknown>", |
976ca316 | 12282 | objfile_name (per_objfile->objfile)); |
73869dc2 DE |
12283 | } |
12284 | ||
12285 | result.virtual_offset = offset; | |
12286 | result.size = size; | |
12287 | return result; | |
12288 | } | |
12289 | ||
12290 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12291 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12292 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12293 | This is for DWP version 2 files. */ | |
12294 | ||
12295 | static struct dwo_unit * | |
976ca316 | 12296 | create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12297 | struct dwp_file *dwp_file, |
73869dc2 DE |
12298 | uint32_t unit_index, |
12299 | const char *comp_dir, | |
12300 | ULONGEST signature, int is_debug_types) | |
12301 | { | |
73869dc2 DE |
12302 | const struct dwp_hash_table *dwp_htab = |
12303 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12304 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12305 | const char *kind = is_debug_types ? "TU" : "CU"; |
12306 | struct dwo_file *dwo_file; | |
12307 | struct dwo_unit *dwo_unit; | |
d2854d8d | 12308 | struct virtual_v2_or_v5_dwo_sections sections; |
73869dc2 | 12309 | void **dwo_file_slot; |
73869dc2 DE |
12310 | int i; |
12311 | ||
12312 | gdb_assert (dwp_file->version == 2); | |
12313 | ||
6f738b01 SM |
12314 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V2 file: %s", |
12315 | kind, pulongest (unit_index), hex_string (signature), | |
12316 | dwp_file->name); | |
73869dc2 DE |
12317 | |
12318 | /* Fetch the section offsets of this DWO unit. */ | |
12319 | ||
12320 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12321 | |
12322 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12323 | { | |
12324 | uint32_t offset = read_4_bytes (dbfd, | |
12325 | dwp_htab->section_pool.v2.offsets | |
12326 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12327 | + i) | |
12328 | * sizeof (uint32_t))); | |
12329 | uint32_t size = read_4_bytes (dbfd, | |
12330 | dwp_htab->section_pool.v2.sizes | |
12331 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12332 | + i) | |
12333 | * sizeof (uint32_t))); | |
12334 | ||
12335 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12336 | { | |
12337 | case DW_SECT_INFO: | |
12338 | case DW_SECT_TYPES: | |
12339 | sections.info_or_types_offset = offset; | |
12340 | sections.info_or_types_size = size; | |
12341 | break; | |
12342 | case DW_SECT_ABBREV: | |
12343 | sections.abbrev_offset = offset; | |
12344 | sections.abbrev_size = size; | |
12345 | break; | |
12346 | case DW_SECT_LINE: | |
12347 | sections.line_offset = offset; | |
12348 | sections.line_size = size; | |
12349 | break; | |
12350 | case DW_SECT_LOC: | |
12351 | sections.loc_offset = offset; | |
12352 | sections.loc_size = size; | |
12353 | break; | |
12354 | case DW_SECT_STR_OFFSETS: | |
12355 | sections.str_offsets_offset = offset; | |
12356 | sections.str_offsets_size = size; | |
12357 | break; | |
12358 | case DW_SECT_MACINFO: | |
12359 | sections.macinfo_offset = offset; | |
12360 | sections.macinfo_size = size; | |
12361 | break; | |
12362 | case DW_SECT_MACRO: | |
12363 | sections.macro_offset = offset; | |
12364 | sections.macro_size = size; | |
12365 | break; | |
12366 | } | |
12367 | } | |
12368 | ||
12369 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12370 | have dwo_unit "live" in that. At least for now. | |
12371 | ||
12372 | The DWP file can be made up of a random collection of CUs and TUs. | |
12373 | However, for each CU + set of TUs that came from the same original DWO | |
12374 | file, we can combine them back into a virtual DWO file to save space | |
12375 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12376 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12377 | ||
791afaa2 TT |
12378 | std::string virtual_dwo_name = |
12379 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12380 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12381 | (long) (sections.line_size ? sections.line_offset : 0), | |
12382 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12383 | (long) (sections.str_offsets_size | |
12384 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12385 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12386 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12387 | comp_dir); |
73869dc2 DE |
12388 | /* Create one if necessary. */ |
12389 | if (*dwo_file_slot == NULL) | |
12390 | { | |
6f738b01 SM |
12391 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12392 | virtual_dwo_name.c_str ()); | |
12393 | ||
51ac9db5 | 12394 | dwo_file = new struct dwo_file; |
976ca316 | 12395 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
73869dc2 DE |
12396 | dwo_file->comp_dir = comp_dir; |
12397 | dwo_file->sections.abbrev = | |
d2854d8d CT |
12398 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.abbrev, |
12399 | sections.abbrev_offset, | |
12400 | sections.abbrev_size); | |
73869dc2 | 12401 | dwo_file->sections.line = |
d2854d8d CT |
12402 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.line, |
12403 | sections.line_offset, | |
12404 | sections.line_size); | |
73869dc2 | 12405 | dwo_file->sections.loc = |
d2854d8d CT |
12406 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.loc, |
12407 | sections.loc_offset, sections.loc_size); | |
73869dc2 | 12408 | dwo_file->sections.macinfo = |
d2854d8d CT |
12409 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macinfo, |
12410 | sections.macinfo_offset, | |
12411 | sections.macinfo_size); | |
73869dc2 | 12412 | dwo_file->sections.macro = |
d2854d8d CT |
12413 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macro, |
12414 | sections.macro_offset, | |
12415 | sections.macro_size); | |
73869dc2 | 12416 | dwo_file->sections.str_offsets = |
d2854d8d CT |
12417 | create_dwp_v2_or_v5_section (per_objfile, |
12418 | &dwp_file->sections.str_offsets, | |
12419 | sections.str_offsets_offset, | |
12420 | sections.str_offsets_size); | |
73869dc2 DE |
12421 | /* The "str" section is global to the entire DWP file. */ |
12422 | dwo_file->sections.str = dwp_file->sections.str; | |
12423 | /* The info or types section is assigned below to dwo_unit, | |
12424 | there's no need to record it in dwo_file. | |
12425 | Also, we can't simply record type sections in dwo_file because | |
12426 | we record a pointer into the vector in dwo_unit. As we collect more | |
12427 | types we'll grow the vector and eventually have to reallocate space | |
12428 | for it, invalidating all copies of pointers into the previous | |
12429 | contents. */ | |
12430 | *dwo_file_slot = dwo_file; | |
12431 | } | |
12432 | else | |
12433 | { | |
6f738b01 SM |
12434 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12435 | virtual_dwo_name.c_str ()); | |
12436 | ||
9a3c8263 | 12437 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12438 | } |
73869dc2 | 12439 | |
976ca316 | 12440 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
73869dc2 DE |
12441 | dwo_unit->dwo_file = dwo_file; |
12442 | dwo_unit->signature = signature; | |
8d749320 | 12443 | dwo_unit->section = |
976ca316 | 12444 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
d2854d8d | 12445 | *dwo_unit->section = create_dwp_v2_or_v5_section |
dda83cd7 | 12446 | (per_objfile, |
d2854d8d CT |
12447 | is_debug_types |
12448 | ? &dwp_file->sections.types | |
12449 | : &dwp_file->sections.info, | |
12450 | sections.info_or_types_offset, | |
12451 | sections.info_or_types_size); | |
12452 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12453 | ||
12454 | return dwo_unit; | |
12455 | } | |
12456 | ||
12457 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12458 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12459 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12460 | This is for DWP version 5 files. */ | |
12461 | ||
12462 | static struct dwo_unit * | |
12463 | create_dwo_unit_in_dwp_v5 (dwarf2_per_objfile *per_objfile, | |
12464 | struct dwp_file *dwp_file, | |
12465 | uint32_t unit_index, | |
12466 | const char *comp_dir, | |
12467 | ULONGEST signature, int is_debug_types) | |
12468 | { | |
12469 | const struct dwp_hash_table *dwp_htab | |
12470 | = is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12471 | bfd *dbfd = dwp_file->dbfd.get (); | |
12472 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12473 | struct dwo_file *dwo_file; | |
12474 | struct dwo_unit *dwo_unit; | |
12475 | struct virtual_v2_or_v5_dwo_sections sections {}; | |
12476 | void **dwo_file_slot; | |
12477 | ||
12478 | gdb_assert (dwp_file->version == 5); | |
12479 | ||
6f738b01 SM |
12480 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V5 file: %s", |
12481 | kind, pulongest (unit_index), hex_string (signature), | |
12482 | dwp_file->name); | |
d2854d8d CT |
12483 | |
12484 | /* Fetch the section offsets of this DWO unit. */ | |
12485 | ||
12486 | /* memset (§ions, 0, sizeof (sections)); */ | |
12487 | ||
12488 | for (int i = 0; i < dwp_htab->nr_columns; ++i) | |
12489 | { | |
12490 | uint32_t offset = read_4_bytes (dbfd, | |
dda83cd7 SM |
12491 | dwp_htab->section_pool.v5.offsets |
12492 | + (((unit_index - 1) | |
12493 | * dwp_htab->nr_columns | |
12494 | + i) | |
12495 | * sizeof (uint32_t))); | |
d2854d8d | 12496 | uint32_t size = read_4_bytes (dbfd, |
dda83cd7 SM |
12497 | dwp_htab->section_pool.v5.sizes |
12498 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12499 | + i) | |
12500 | * sizeof (uint32_t))); | |
d2854d8d CT |
12501 | |
12502 | switch (dwp_htab->section_pool.v5.section_ids[i]) | |
dda83cd7 SM |
12503 | { |
12504 | case DW_SECT_ABBREV_V5: | |
12505 | sections.abbrev_offset = offset; | |
12506 | sections.abbrev_size = size; | |
12507 | break; | |
12508 | case DW_SECT_INFO_V5: | |
12509 | sections.info_or_types_offset = offset; | |
12510 | sections.info_or_types_size = size; | |
12511 | break; | |
12512 | case DW_SECT_LINE_V5: | |
12513 | sections.line_offset = offset; | |
12514 | sections.line_size = size; | |
12515 | break; | |
12516 | case DW_SECT_LOCLISTS_V5: | |
12517 | sections.loclists_offset = offset; | |
12518 | sections.loclists_size = size; | |
12519 | break; | |
12520 | case DW_SECT_MACRO_V5: | |
12521 | sections.macro_offset = offset; | |
12522 | sections.macro_size = size; | |
12523 | break; | |
12524 | case DW_SECT_RNGLISTS_V5: | |
12525 | sections.rnglists_offset = offset; | |
12526 | sections.rnglists_size = size; | |
12527 | break; | |
12528 | case DW_SECT_STR_OFFSETS_V5: | |
12529 | sections.str_offsets_offset = offset; | |
12530 | sections.str_offsets_size = size; | |
12531 | break; | |
12532 | case DW_SECT_RESERVED_V5: | |
12533 | default: | |
12534 | break; | |
12535 | } | |
d2854d8d CT |
12536 | } |
12537 | ||
12538 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12539 | have dwo_unit "live" in that. At least for now. | |
12540 | ||
12541 | The DWP file can be made up of a random collection of CUs and TUs. | |
12542 | However, for each CU + set of TUs that came from the same original DWO | |
12543 | file, we can combine them back into a virtual DWO file to save space | |
12544 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12545 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12546 | ||
12547 | std::string virtual_dwo_name = | |
12548 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld-%ld-%ld", | |
dda83cd7 SM |
12549 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), |
12550 | (long) (sections.line_size ? sections.line_offset : 0), | |
12551 | (long) (sections.loclists_size ? sections.loclists_offset : 0), | |
12552 | (long) (sections.str_offsets_size | |
12553 | ? sections.str_offsets_offset : 0), | |
12554 | (long) (sections.macro_size ? sections.macro_offset : 0), | |
12555 | (long) (sections.rnglists_size ? sections.rnglists_offset: 0)); | |
d2854d8d CT |
12556 | /* Can we use an existing virtual DWO file? */ |
12557 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, | |
dda83cd7 SM |
12558 | virtual_dwo_name.c_str (), |
12559 | comp_dir); | |
d2854d8d CT |
12560 | /* Create one if necessary. */ |
12561 | if (*dwo_file_slot == NULL) | |
12562 | { | |
6f738b01 SM |
12563 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12564 | virtual_dwo_name.c_str ()); | |
12565 | ||
d2854d8d CT |
12566 | dwo_file = new struct dwo_file; |
12567 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); | |
12568 | dwo_file->comp_dir = comp_dir; | |
12569 | dwo_file->sections.abbrev = | |
dda83cd7 SM |
12570 | create_dwp_v2_or_v5_section (per_objfile, |
12571 | &dwp_file->sections.abbrev, | |
12572 | sections.abbrev_offset, | |
12573 | sections.abbrev_size); | |
d2854d8d | 12574 | dwo_file->sections.line = |
dda83cd7 SM |
12575 | create_dwp_v2_or_v5_section (per_objfile, |
12576 | &dwp_file->sections.line, | |
12577 | sections.line_offset, sections.line_size); | |
d2854d8d | 12578 | dwo_file->sections.macro = |
dda83cd7 SM |
12579 | create_dwp_v2_or_v5_section (per_objfile, |
12580 | &dwp_file->sections.macro, | |
12581 | sections.macro_offset, | |
12582 | sections.macro_size); | |
d2854d8d | 12583 | dwo_file->sections.loclists = |
dda83cd7 SM |
12584 | create_dwp_v2_or_v5_section (per_objfile, |
12585 | &dwp_file->sections.loclists, | |
12586 | sections.loclists_offset, | |
12587 | sections.loclists_size); | |
d2854d8d | 12588 | dwo_file->sections.rnglists = |
dda83cd7 SM |
12589 | create_dwp_v2_or_v5_section (per_objfile, |
12590 | &dwp_file->sections.rnglists, | |
12591 | sections.rnglists_offset, | |
12592 | sections.rnglists_size); | |
d2854d8d | 12593 | dwo_file->sections.str_offsets = |
dda83cd7 SM |
12594 | create_dwp_v2_or_v5_section (per_objfile, |
12595 | &dwp_file->sections.str_offsets, | |
12596 | sections.str_offsets_offset, | |
12597 | sections.str_offsets_size); | |
d2854d8d CT |
12598 | /* The "str" section is global to the entire DWP file. */ |
12599 | dwo_file->sections.str = dwp_file->sections.str; | |
12600 | /* The info or types section is assigned below to dwo_unit, | |
dda83cd7 SM |
12601 | there's no need to record it in dwo_file. |
12602 | Also, we can't simply record type sections in dwo_file because | |
12603 | we record a pointer into the vector in dwo_unit. As we collect more | |
12604 | types we'll grow the vector and eventually have to reallocate space | |
12605 | for it, invalidating all copies of pointers into the previous | |
12606 | contents. */ | |
d2854d8d CT |
12607 | *dwo_file_slot = dwo_file; |
12608 | } | |
12609 | else | |
12610 | { | |
6f738b01 SM |
12611 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12612 | virtual_dwo_name.c_str ()); | |
12613 | ||
d2854d8d CT |
12614 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
12615 | } | |
12616 | ||
12617 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); | |
12618 | dwo_unit->dwo_file = dwo_file; | |
12619 | dwo_unit->signature = signature; | |
12620 | dwo_unit->section | |
12621 | = XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); | |
12622 | *dwo_unit->section = create_dwp_v2_or_v5_section (per_objfile, | |
dda83cd7 SM |
12623 | &dwp_file->sections.info, |
12624 | sections.info_or_types_offset, | |
12625 | sections.info_or_types_size); | |
73869dc2 DE |
12626 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
12627 | ||
12628 | return dwo_unit; | |
12629 | } | |
12630 | ||
57d63ce2 DE |
12631 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12632 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12633 | |
12634 | static struct dwo_unit * | |
976ca316 | 12635 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12636 | struct dwp_file *dwp_file, const char *comp_dir, |
57d63ce2 | 12637 | ULONGEST signature, int is_debug_types) |
80626a55 | 12638 | { |
57d63ce2 DE |
12639 | const struct dwp_hash_table *dwp_htab = |
12640 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12641 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12642 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12643 | uint32_t hash = signature & mask; |
12644 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12645 | unsigned int i; | |
12646 | void **slot; | |
870f88f7 | 12647 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12648 | |
12649 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12650 | find_dwo_cu.signature = signature; | |
19ac8c2e | 12651 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
12652 | ? dwp_file->loaded_tus.get () |
12653 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 12654 | &find_dwo_cu, INSERT); |
80626a55 DE |
12655 | |
12656 | if (*slot != NULL) | |
9a3c8263 | 12657 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12658 | |
12659 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12660 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12661 | { |
12662 | ULONGEST signature_in_table; | |
12663 | ||
12664 | signature_in_table = | |
57d63ce2 | 12665 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12666 | if (signature_in_table == signature) |
12667 | { | |
57d63ce2 DE |
12668 | uint32_t unit_index = |
12669 | read_4_bytes (dbfd, | |
12670 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12671 | |
73869dc2 DE |
12672 | if (dwp_file->version == 1) |
12673 | { | |
976ca316 SM |
12674 | *slot = create_dwo_unit_in_dwp_v1 (per_objfile, dwp_file, |
12675 | unit_index, comp_dir, | |
12676 | signature, is_debug_types); | |
73869dc2 | 12677 | } |
d2854d8d | 12678 | else if (dwp_file->version == 2) |
73869dc2 | 12679 | { |
976ca316 SM |
12680 | *slot = create_dwo_unit_in_dwp_v2 (per_objfile, dwp_file, |
12681 | unit_index, comp_dir, | |
12682 | signature, is_debug_types); | |
73869dc2 | 12683 | } |
d2854d8d CT |
12684 | else /* version == 5 */ |
12685 | { | |
12686 | *slot = create_dwo_unit_in_dwp_v5 (per_objfile, dwp_file, | |
12687 | unit_index, comp_dir, | |
12688 | signature, is_debug_types); | |
12689 | } | |
9a3c8263 | 12690 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12691 | } |
12692 | if (signature_in_table == 0) | |
12693 | return NULL; | |
12694 | hash = (hash + hash2) & mask; | |
12695 | } | |
12696 | ||
12697 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12698 | " [in module %s]"), | |
12699 | dwp_file->name); | |
12700 | } | |
12701 | ||
ab5088bf | 12702 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12703 | Open the file specified by FILE_NAME and hand it off to BFD for |
12704 | preliminary analysis. Return a newly initialized bfd *, which | |
12705 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12706 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12707 | SEARCH_CWD is true if the current directory is to be searched. |
12708 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12709 | If successful, the file is added to the bfd include table of the |
12710 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12711 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12712 | NOTE: This function is derived from symfile_bfd_open. */ |
12713 | ||
192b62ce | 12714 | static gdb_bfd_ref_ptr |
976ca316 | 12715 | try_open_dwop_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12716 | const char *file_name, int is_dwp, int search_cwd) |
3019eac3 | 12717 | { |
24b9144d | 12718 | int desc; |
9c02c129 DE |
12719 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12720 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12721 | to debug_file_directory. */ | |
e0cc99a6 | 12722 | const char *search_path; |
9c02c129 DE |
12723 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12724 | ||
e0cc99a6 | 12725 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12726 | if (search_cwd) |
12727 | { | |
12728 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12729 | { |
12730 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12731 | debug_file_directory, | |
12732 | (char *) NULL)); | |
12733 | search_path = search_path_holder.get (); | |
12734 | } | |
6ac97d4c | 12735 | else |
e0cc99a6 | 12736 | search_path = "."; |
6ac97d4c | 12737 | } |
9c02c129 | 12738 | else |
e0cc99a6 | 12739 | search_path = debug_file_directory; |
3019eac3 | 12740 | |
24b9144d | 12741 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12742 | if (is_dwp) |
12743 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12744 | |
12745 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12746 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12747 | O_RDONLY | O_BINARY, &absolute_name); |
12748 | if (desc < 0) | |
12749 | return NULL; | |
12750 | ||
e0cc99a6 TT |
12751 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12752 | gnutarget, desc)); | |
9c02c129 DE |
12753 | if (sym_bfd == NULL) |
12754 | return NULL; | |
192b62ce | 12755 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12756 | |
192b62ce TT |
12757 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12758 | return NULL; | |
3019eac3 | 12759 | |
13aaf454 DE |
12760 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12761 | This is important because things like demangled_names_hash lives in the | |
12762 | objfile's per_bfd space and may have references to things like symbol | |
12763 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
976ca316 | 12764 | gdb_bfd_record_inclusion (per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12765 | |
3019eac3 DE |
12766 | return sym_bfd; |
12767 | } | |
12768 | ||
ab5088bf | 12769 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12770 | COMP_DIR is the DW_AT_comp_dir attribute. |
12771 | The result is the bfd handle of the file. | |
12772 | If there is a problem finding or opening the file, return NULL. | |
12773 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12774 | same as symfile_bfd_open. */ | |
12775 | ||
192b62ce | 12776 | static gdb_bfd_ref_ptr |
976ca316 | 12777 | open_dwo_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12778 | const char *file_name, const char *comp_dir) |
3019eac3 | 12779 | { |
80626a55 | 12780 | if (IS_ABSOLUTE_PATH (file_name)) |
976ca316 | 12781 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12782 | 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
12783 | |
12784 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12785 | ||
12786 | if (comp_dir != NULL) | |
12787 | { | |
43816ebc TT |
12788 | gdb::unique_xmalloc_ptr<char> path_to_try |
12789 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12790 | |
12791 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12792 | search path, which seems useful. */ | |
976ca316 | 12793 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, path_to_try.get (), |
ed2dc618 | 12794 | 0 /*is_dwp*/, |
192b62ce | 12795 | 1 /*search_cwd*/)); |
3019eac3 DE |
12796 | if (abfd != NULL) |
12797 | return abfd; | |
12798 | } | |
12799 | ||
12800 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12801 | is a list of paths. */ | |
12802 | ||
12803 | if (*debug_file_directory == '\0') | |
12804 | return NULL; | |
12805 | ||
976ca316 | 12806 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12807 | 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
12808 | } |
12809 | ||
80626a55 DE |
12810 | /* This function is mapped across the sections and remembers the offset and |
12811 | size of each of the DWO debugging sections we are interested in. */ | |
12812 | ||
12813 | static void | |
5bb6e9dd TT |
12814 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, |
12815 | dwo_sections *dwo_sections) | |
80626a55 | 12816 | { |
80626a55 DE |
12817 | const struct dwop_section_names *names = &dwop_section_names; |
12818 | ||
12819 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12820 | { | |
049412e3 | 12821 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12822 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12823 | } |
12824 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12825 | { | |
049412e3 | 12826 | dwo_sections->info.s.section = sectp; |
fd361982 | 12827 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12828 | } |
12829 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12830 | { | |
049412e3 | 12831 | dwo_sections->line.s.section = sectp; |
fd361982 | 12832 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12833 | } |
12834 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12835 | { | |
049412e3 | 12836 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12837 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12838 | } |
41144253 | 12839 | else if (section_is_p (sectp->name, &names->loclists_dwo)) |
12840 | { | |
12841 | dwo_sections->loclists.s.section = sectp; | |
12842 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12843 | } | |
80626a55 DE |
12844 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) |
12845 | { | |
049412e3 | 12846 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12847 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12848 | } |
12849 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12850 | { | |
049412e3 | 12851 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12852 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 | 12853 | } |
d0ce17d8 CT |
12854 | else if (section_is_p (sectp->name, &names->rnglists_dwo)) |
12855 | { | |
12856 | dwo_sections->rnglists.s.section = sectp; | |
12857 | dwo_sections->rnglists.size = bfd_section_size (sectp); | |
12858 | } | |
80626a55 DE |
12859 | else if (section_is_p (sectp->name, &names->str_dwo)) |
12860 | { | |
049412e3 | 12861 | dwo_sections->str.s.section = sectp; |
fd361982 | 12862 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12863 | } |
12864 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12865 | { | |
049412e3 | 12866 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12867 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12868 | } |
12869 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12870 | { | |
12871 | struct dwarf2_section_info type_section; | |
12872 | ||
12873 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12874 | type_section.s.section = sectp; |
fd361982 | 12875 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12876 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12877 | } |
12878 | } | |
12879 | ||
ab5088bf | 12880 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12881 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12882 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12883 | |
12884 | static struct dwo_file * | |
4ab09049 SM |
12885 | open_and_init_dwo_file (dwarf2_cu *cu, const char *dwo_name, |
12886 | const char *comp_dir) | |
3019eac3 | 12887 | { |
976ca316 | 12888 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 12889 | |
976ca316 | 12890 | gdb_bfd_ref_ptr dbfd = open_dwo_file (per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12891 | if (dbfd == NULL) |
12892 | { | |
6f738b01 SM |
12893 | dwarf_read_debug_printf ("DWO file not found: %s", dwo_name); |
12894 | ||
80626a55 DE |
12895 | return NULL; |
12896 | } | |
263db9a1 | 12897 | |
51ac9db5 | 12898 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12899 | dwo_file->dwo_name = dwo_name; |
12900 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12901 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12902 | |
5bb6e9dd TT |
12903 | for (asection *sec : gdb_bfd_sections (dwo_file->dbfd)) |
12904 | dwarf2_locate_dwo_sections (dwo_file->dbfd.get (), sec, | |
12905 | &dwo_file->sections); | |
3019eac3 | 12906 | |
976ca316 SM |
12907 | create_cus_hash_table (per_objfile, cu, *dwo_file, dwo_file->sections.info, |
12908 | dwo_file->cus); | |
3019eac3 | 12909 | |
d2854d8d CT |
12910 | if (cu->per_cu->dwarf_version < 5) |
12911 | { | |
12912 | create_debug_types_hash_table (per_objfile, dwo_file.get (), | |
12913 | dwo_file->sections.types, dwo_file->tus); | |
12914 | } | |
12915 | else | |
12916 | { | |
12917 | create_debug_type_hash_table (per_objfile, dwo_file.get (), | |
12918 | &dwo_file->sections.info, dwo_file->tus, | |
12919 | rcuh_kind::TYPE); | |
12920 | } | |
3019eac3 | 12921 | |
6f738b01 | 12922 | dwarf_read_debug_printf ("DWO file found: %s", dwo_name); |
80626a55 | 12923 | |
263db9a1 | 12924 | return dwo_file.release (); |
3019eac3 DE |
12925 | } |
12926 | ||
80626a55 | 12927 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12928 | size of each of the DWP debugging sections common to version 1 and 2 that |
12929 | we are interested in. */ | |
3019eac3 | 12930 | |
80626a55 | 12931 | static void |
73869dc2 | 12932 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
5bb6e9dd | 12933 | dwp_file *dwp_file) |
3019eac3 | 12934 | { |
80626a55 DE |
12935 | const struct dwop_section_names *names = &dwop_section_names; |
12936 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12937 | |
80626a55 | 12938 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12939 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12940 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12941 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12942 | |
80626a55 DE |
12943 | /* Look for specific sections that we need. */ |
12944 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12945 | { | |
049412e3 | 12946 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12947 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12948 | } |
12949 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12950 | { | |
049412e3 | 12951 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12952 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12953 | } |
12954 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12955 | { | |
049412e3 | 12956 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12957 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12958 | } |
12959 | } | |
3019eac3 | 12960 | |
73869dc2 DE |
12961 | /* This function is mapped across the sections and remembers the offset and |
12962 | size of each of the DWP version 2 debugging sections that we are interested | |
12963 | in. This is split into a separate function because we don't know if we | |
d2854d8d | 12964 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ |
73869dc2 DE |
12965 | |
12966 | static void | |
12967 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12968 | { | |
9a3c8263 | 12969 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12970 | const struct dwop_section_names *names = &dwop_section_names; |
12971 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12972 | ||
12973 | /* Record the ELF section number for later lookup: this is what the | |
12974 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12975 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12976 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12977 | ||
12978 | /* Look for specific sections that we need. */ | |
12979 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12980 | { | |
049412e3 | 12981 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12982 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12983 | } |
12984 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12985 | { | |
049412e3 | 12986 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12987 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12988 | } |
12989 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12990 | { | |
049412e3 | 12991 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12992 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12993 | } |
12994 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12995 | { | |
049412e3 | 12996 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12997 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12998 | } |
12999 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
13000 | { | |
049412e3 | 13001 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 13002 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
13003 | } |
13004 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13005 | { | |
049412e3 | 13006 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 13007 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
13008 | } |
13009 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13010 | { | |
049412e3 | 13011 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 13012 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
13013 | } |
13014 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13015 | { | |
049412e3 | 13016 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 13017 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
13018 | } |
13019 | } | |
13020 | ||
d2854d8d CT |
13021 | /* This function is mapped across the sections and remembers the offset and |
13022 | size of each of the DWP version 5 debugging sections that we are interested | |
13023 | in. This is split into a separate function because we don't know if we | |
13024 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ | |
13025 | ||
13026 | static void | |
13027 | dwarf2_locate_v5_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
13028 | { | |
13029 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; | |
13030 | const struct dwop_section_names *names = &dwop_section_names; | |
13031 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
13032 | ||
13033 | /* Record the ELF section number for later lookup: this is what the | |
13034 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
13035 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
13036 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
13037 | ||
13038 | /* Look for specific sections that we need. */ | |
13039 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
13040 | { | |
13041 | dwp_file->sections.abbrev.s.section = sectp; | |
13042 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); | |
13043 | } | |
13044 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
13045 | { | |
13046 | dwp_file->sections.info.s.section = sectp; | |
13047 | dwp_file->sections.info.size = bfd_section_size (sectp); | |
13048 | } | |
13049 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
13050 | { | |
13051 | dwp_file->sections.line.s.section = sectp; | |
13052 | dwp_file->sections.line.size = bfd_section_size (sectp); | |
13053 | } | |
13054 | else if (section_is_p (sectp->name, &names->loclists_dwo)) | |
13055 | { | |
13056 | dwp_file->sections.loclists.s.section = sectp; | |
13057 | dwp_file->sections.loclists.size = bfd_section_size (sectp); | |
13058 | } | |
13059 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13060 | { | |
13061 | dwp_file->sections.macro.s.section = sectp; | |
13062 | dwp_file->sections.macro.size = bfd_section_size (sectp); | |
13063 | } | |
13064 | else if (section_is_p (sectp->name, &names->rnglists_dwo)) | |
13065 | { | |
13066 | dwp_file->sections.rnglists.s.section = sectp; | |
13067 | dwp_file->sections.rnglists.size = bfd_section_size (sectp); | |
13068 | } | |
13069 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13070 | { | |
13071 | dwp_file->sections.str_offsets.s.section = sectp; | |
13072 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); | |
13073 | } | |
13074 | } | |
13075 | ||
80626a55 | 13076 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13077 | |
80626a55 DE |
13078 | static hashval_t |
13079 | hash_dwp_loaded_cutus (const void *item) | |
13080 | { | |
9a3c8263 | 13081 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13082 | |
80626a55 DE |
13083 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13084 | return dwo_unit->signature; | |
3019eac3 DE |
13085 | } |
13086 | ||
80626a55 | 13087 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13088 | |
80626a55 DE |
13089 | static int |
13090 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13091 | { |
9a3c8263 SM |
13092 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13093 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13094 | |
80626a55 DE |
13095 | return dua->signature == dub->signature; |
13096 | } | |
3019eac3 | 13097 | |
80626a55 | 13098 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13099 | |
48b490f2 | 13100 | static htab_up |
298e9637 | 13101 | allocate_dwp_loaded_cutus_table () |
80626a55 | 13102 | { |
48b490f2 TT |
13103 | return htab_up (htab_create_alloc (3, |
13104 | hash_dwp_loaded_cutus, | |
13105 | eq_dwp_loaded_cutus, | |
13106 | NULL, xcalloc, xfree)); | |
80626a55 | 13107 | } |
3019eac3 | 13108 | |
ab5088bf DE |
13109 | /* Try to open DWP file FILE_NAME. |
13110 | The result is the bfd handle of the file. | |
13111 | If there is a problem finding or opening the file, return NULL. | |
13112 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13113 | same as symfile_bfd_open. */ | |
13114 | ||
192b62ce | 13115 | static gdb_bfd_ref_ptr |
976ca316 | 13116 | open_dwp_file (dwarf2_per_objfile *per_objfile, const char *file_name) |
ab5088bf | 13117 | { |
976ca316 | 13118 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 13119 | 1 /*is_dwp*/, |
192b62ce | 13120 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13121 | if (abfd != NULL) |
13122 | return abfd; | |
13123 | ||
13124 | /* Work around upstream bug 15652. | |
13125 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13126 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13127 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13128 | of the executable's path may have discarded the needed info. | |
13129 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13130 | .gnu_debuglink, but that doesn't exist yet.] | |
13131 | Strip the directory from FILE_NAME and search again. */ | |
13132 | if (*debug_file_directory != '\0') | |
13133 | { | |
13134 | /* Don't implicitly search the current directory here. | |
13135 | If the user wants to search "." to handle this case, | |
13136 | it must be added to debug-file-directory. */ | |
976ca316 SM |
13137 | return try_open_dwop_file (per_objfile, lbasename (file_name), |
13138 | 1 /*is_dwp*/, | |
6ac97d4c DE |
13139 | 0 /*search_cwd*/); |
13140 | } | |
13141 | ||
13142 | return NULL; | |
ab5088bf DE |
13143 | } |
13144 | ||
80626a55 DE |
13145 | /* Initialize the use of the DWP file for the current objfile. |
13146 | By convention the name of the DWP file is ${objfile}.dwp. | |
13147 | The result is NULL if it can't be found. */ | |
a766d390 | 13148 | |
400174b1 | 13149 | static std::unique_ptr<struct dwp_file> |
976ca316 | 13150 | open_and_init_dwp_file (dwarf2_per_objfile *per_objfile) |
80626a55 | 13151 | { |
976ca316 | 13152 | struct objfile *objfile = per_objfile->objfile; |
80626a55 | 13153 | |
82bf32bc JK |
13154 | /* Try to find first .dwp for the binary file before any symbolic links |
13155 | resolving. */ | |
6c447423 DE |
13156 | |
13157 | /* If the objfile is a debug file, find the name of the real binary | |
13158 | file and get the name of dwp file from there. */ | |
d721ba37 | 13159 | std::string dwp_name; |
6c447423 DE |
13160 | if (objfile->separate_debug_objfile_backlink != NULL) |
13161 | { | |
13162 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13163 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13164 | |
d721ba37 | 13165 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13166 | } |
13167 | else | |
d721ba37 PA |
13168 | dwp_name = objfile->original_name; |
13169 | ||
13170 | dwp_name += ".dwp"; | |
80626a55 | 13171 | |
976ca316 | 13172 | gdb_bfd_ref_ptr dbfd (open_dwp_file (per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13173 | if (dbfd == NULL |
13174 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13175 | { | |
13176 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13177 | dwp_name = objfile_name (objfile); |
13178 | dwp_name += ".dwp"; | |
976ca316 | 13179 | dbfd = open_dwp_file (per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13180 | } |
13181 | ||
80626a55 DE |
13182 | if (dbfd == NULL) |
13183 | { | |
6f738b01 SM |
13184 | dwarf_read_debug_printf ("DWP file not found: %s", dwp_name.c_str ()); |
13185 | ||
400174b1 | 13186 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 13187 | } |
400174b1 TT |
13188 | |
13189 | const char *name = bfd_get_filename (dbfd.get ()); | |
13190 | std::unique_ptr<struct dwp_file> dwp_file | |
13191 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 13192 | |
0a0f4c01 | 13193 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 | 13194 | dwp_file->elf_sections = |
976ca316 | 13195 | OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
80626a55 DE |
13196 | dwp_file->num_sections, asection *); |
13197 | ||
5bb6e9dd TT |
13198 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
13199 | dwarf2_locate_common_dwp_sections (dwp_file->dbfd.get (), sec, | |
13200 | dwp_file.get ()); | |
80626a55 | 13201 | |
976ca316 | 13202 | dwp_file->cus = create_dwp_hash_table (per_objfile, dwp_file.get (), 0); |
80626a55 | 13203 | |
976ca316 | 13204 | dwp_file->tus = create_dwp_hash_table (per_objfile, dwp_file.get (), 1); |
80626a55 | 13205 | |
73869dc2 | 13206 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13207 | if (dwp_file->cus && dwp_file->tus |
13208 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13209 | { |
13210 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13211 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13212 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13213 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13214 | " TU version %s [in DWP file %s]"), | |
13215 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13216 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13217 | } |
08302ed2 DE |
13218 | |
13219 | if (dwp_file->cus) | |
13220 | dwp_file->version = dwp_file->cus->version; | |
13221 | else if (dwp_file->tus) | |
13222 | dwp_file->version = dwp_file->tus->version; | |
13223 | else | |
13224 | dwp_file->version = 2; | |
73869dc2 | 13225 | |
5bb6e9dd TT |
13226 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
13227 | { | |
13228 | if (dwp_file->version == 2) | |
13229 | dwarf2_locate_v2_dwp_sections (dwp_file->dbfd.get (), sec, | |
13230 | dwp_file.get ()); | |
13231 | else | |
13232 | dwarf2_locate_v5_dwp_sections (dwp_file->dbfd.get (), sec, | |
13233 | dwp_file.get ()); | |
13234 | } | |
73869dc2 | 13235 | |
298e9637 SM |
13236 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
13237 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 13238 | |
6f738b01 SM |
13239 | dwarf_read_debug_printf ("DWP file found: %s", dwp_file->name); |
13240 | dwarf_read_debug_printf (" %s CUs, %s TUs", | |
13241 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13242 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13243 | |
13244 | return dwp_file; | |
3019eac3 | 13245 | } |
c906108c | 13246 | |
ab5088bf DE |
13247 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13248 | ||
13249 | static struct dwp_file * | |
976ca316 | 13250 | get_dwp_file (dwarf2_per_objfile *per_objfile) |
ab5088bf | 13251 | { |
976ca316 | 13252 | if (!per_objfile->per_bfd->dwp_checked) |
ab5088bf | 13253 | { |
976ca316 SM |
13254 | per_objfile->per_bfd->dwp_file = open_and_init_dwp_file (per_objfile); |
13255 | per_objfile->per_bfd->dwp_checked = 1; | |
ab5088bf | 13256 | } |
976ca316 | 13257 | return per_objfile->per_bfd->dwp_file.get (); |
ab5088bf DE |
13258 | } |
13259 | ||
80626a55 DE |
13260 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13261 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13262 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13263 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13264 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13265 | ||
13266 | This is called, for example, when wanting to read a variable with a | |
13267 | complex location. Therefore we don't want to do file i/o for every call. | |
13268 | Therefore we don't want to look for a DWO file on every call. | |
13269 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13270 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13271 | for a DWO file. | |
13272 | ||
1c658ad5 | 13273 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13274 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13275 | |
3019eac3 | 13276 | static struct dwo_unit * |
4ab09049 | 13277 | lookup_dwo_cutu (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 | 13278 | ULONGEST signature, int is_debug_types) |
3019eac3 | 13279 | { |
976ca316 SM |
13280 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13281 | struct objfile *objfile = per_objfile->objfile; | |
80626a55 DE |
13282 | const char *kind = is_debug_types ? "TU" : "CU"; |
13283 | void **dwo_file_slot; | |
3019eac3 | 13284 | struct dwo_file *dwo_file; |
80626a55 | 13285 | struct dwp_file *dwp_file; |
cb1df416 | 13286 | |
6a506a2d DE |
13287 | /* First see if there's a DWP file. |
13288 | If we have a DWP file but didn't find the DWO inside it, don't | |
13289 | look for the original DWO file. It makes gdb behave differently | |
13290 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13291 | |
976ca316 | 13292 | dwp_file = get_dwp_file (per_objfile); |
80626a55 | 13293 | if (dwp_file != NULL) |
cf2c3c16 | 13294 | { |
80626a55 DE |
13295 | const struct dwp_hash_table *dwp_htab = |
13296 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13297 | ||
13298 | if (dwp_htab != NULL) | |
13299 | { | |
13300 | struct dwo_unit *dwo_cutu = | |
976ca316 SM |
13301 | lookup_dwo_unit_in_dwp (per_objfile, dwp_file, comp_dir, signature, |
13302 | is_debug_types); | |
80626a55 DE |
13303 | |
13304 | if (dwo_cutu != NULL) | |
13305 | { | |
6f738b01 SM |
13306 | dwarf_read_debug_printf ("Virtual DWO %s %s found: @%s", |
13307 | kind, hex_string (signature), | |
13308 | host_address_to_string (dwo_cutu)); | |
13309 | ||
80626a55 DE |
13310 | return dwo_cutu; |
13311 | } | |
13312 | } | |
13313 | } | |
6a506a2d | 13314 | else |
80626a55 | 13315 | { |
6a506a2d | 13316 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13317 | |
976ca316 | 13318 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, dwo_name, comp_dir); |
6a506a2d | 13319 | if (*dwo_file_slot == NULL) |
80626a55 | 13320 | { |
6a506a2d | 13321 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
4ab09049 | 13322 | *dwo_file_slot = open_and_init_dwo_file (cu, dwo_name, comp_dir); |
19c3d4c9 | 13323 | } |
6a506a2d | 13324 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13325 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13326 | |
6a506a2d | 13327 | if (dwo_file != NULL) |
19c3d4c9 | 13328 | { |
6a506a2d DE |
13329 | struct dwo_unit *dwo_cutu = NULL; |
13330 | ||
13331 | if (is_debug_types && dwo_file->tus) | |
13332 | { | |
13333 | struct dwo_unit find_dwo_cutu; | |
13334 | ||
13335 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13336 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 13337 | dwo_cutu |
b0b6a987 TT |
13338 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
13339 | &find_dwo_cutu); | |
6a506a2d | 13340 | } |
33c5cd75 | 13341 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13342 | { |
33c5cd75 DB |
13343 | struct dwo_unit find_dwo_cutu; |
13344 | ||
13345 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13346 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 13347 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 13348 | &find_dwo_cutu); |
6a506a2d DE |
13349 | } |
13350 | ||
13351 | if (dwo_cutu != NULL) | |
13352 | { | |
6f738b01 SM |
13353 | dwarf_read_debug_printf ("DWO %s %s(%s) found: @%s", |
13354 | kind, dwo_name, hex_string (signature), | |
13355 | host_address_to_string (dwo_cutu)); | |
13356 | ||
6a506a2d | 13357 | return dwo_cutu; |
80626a55 DE |
13358 | } |
13359 | } | |
2e276125 | 13360 | } |
9cdd5dbd | 13361 | |
80626a55 DE |
13362 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13363 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13364 | correctly to find the file. */ | |
13365 | ||
6f738b01 SM |
13366 | dwarf_read_debug_printf ("DWO %s %s(%s) not found", |
13367 | kind, dwo_name, hex_string (signature)); | |
3019eac3 | 13368 | |
6656a72d DE |
13369 | /* This is a warning and not a complaint because it can be caused by |
13370 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13371 | { |
13372 | /* Print the name of the DWP file if we looked there, helps the user | |
13373 | better diagnose the problem. */ | |
791afaa2 | 13374 | std::string dwp_text; |
43942612 DE |
13375 | |
13376 | if (dwp_file != NULL) | |
791afaa2 TT |
13377 | dwp_text = string_printf (" [in DWP file %s]", |
13378 | lbasename (dwp_file->name)); | |
43942612 | 13379 | |
9d8780f0 | 13380 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 | 13381 | " [in module %s]"), |
4ab09049 SM |
13382 | kind, dwo_name, hex_string (signature), dwp_text.c_str (), kind, |
13383 | sect_offset_str (cu->per_cu->sect_off), objfile_name (objfile)); | |
43942612 | 13384 | } |
3019eac3 | 13385 | return NULL; |
5fb290d7 DJ |
13386 | } |
13387 | ||
80626a55 DE |
13388 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13389 | See lookup_dwo_cutu_unit for details. */ | |
13390 | ||
13391 | static struct dwo_unit * | |
4ab09049 | 13392 | lookup_dwo_comp_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 DE |
13393 | ULONGEST signature) |
13394 | { | |
4ab09049 SM |
13395 | gdb_assert (!cu->per_cu->is_debug_types); |
13396 | ||
13397 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, signature, 0); | |
80626a55 DE |
13398 | } |
13399 | ||
13400 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13401 | See lookup_dwo_cutu_unit for details. */ | |
13402 | ||
13403 | static struct dwo_unit * | |
4ab09049 | 13404 | lookup_dwo_type_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir) |
80626a55 | 13405 | { |
4ab09049 SM |
13406 | gdb_assert (cu->per_cu->is_debug_types); |
13407 | ||
13408 | signatured_type *sig_type = (signatured_type *) cu->per_cu; | |
13409 | ||
13410 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, sig_type->signature, 1); | |
80626a55 DE |
13411 | } |
13412 | ||
89e63ee4 DE |
13413 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13414 | ||
13415 | static int | |
13416 | queue_and_load_dwo_tu (void **slot, void *info) | |
13417 | { | |
13418 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
d460f660 | 13419 | dwarf2_cu *cu = (dwarf2_cu *) info; |
89e63ee4 | 13420 | ULONGEST signature = dwo_unit->signature; |
d460f660 | 13421 | signatured_type *sig_type = lookup_dwo_signatured_type (cu, signature); |
89e63ee4 DE |
13422 | |
13423 | if (sig_type != NULL) | |
13424 | { | |
13425 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13426 | ||
13427 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13428 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13429 | while processing PER_CU. */ | |
120ce1b5 | 13430 | if (maybe_queue_comp_unit (NULL, sig_cu, cu->per_objfile, cu->language)) |
d460f660 SM |
13431 | load_full_type_unit (sig_cu, cu->per_objfile); |
13432 | cu->per_cu->imported_symtabs_push (sig_cu); | |
89e63ee4 DE |
13433 | } |
13434 | ||
13435 | return 1; | |
13436 | } | |
13437 | ||
1b555f17 | 13438 | /* Queue all TUs contained in the DWO of CU to be read in. |
89e63ee4 DE |
13439 | The DWO may have the only definition of the type, though it may not be |
13440 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13441 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13442 | ||
13443 | static void | |
1b555f17 | 13444 | queue_and_load_all_dwo_tus (dwarf2_cu *cu) |
89e63ee4 DE |
13445 | { |
13446 | struct dwo_unit *dwo_unit; | |
13447 | struct dwo_file *dwo_file; | |
13448 | ||
1b555f17 SM |
13449 | gdb_assert (cu != nullptr); |
13450 | gdb_assert (!cu->per_cu->is_debug_types); | |
13451 | gdb_assert (get_dwp_file (cu->per_objfile) == nullptr); | |
89e63ee4 | 13452 | |
1b555f17 | 13453 | dwo_unit = cu->dwo_unit; |
89e63ee4 DE |
13454 | gdb_assert (dwo_unit != NULL); |
13455 | ||
13456 | dwo_file = dwo_unit->dwo_file; | |
13457 | if (dwo_file->tus != NULL) | |
1b555f17 | 13458 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, cu); |
89e63ee4 DE |
13459 | } |
13460 | ||
3019eac3 | 13461 | /* Read in various DIEs. */ |
348e048f | 13462 | |
d389af10 | 13463 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13464 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13465 | already referenced by DW_AT_abstract_origin from the children of the | |
13466 | current DIE. */ | |
d389af10 JK |
13467 | |
13468 | static void | |
13469 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13470 | { | |
13471 | struct die_info *child_die; | |
791afaa2 | 13472 | sect_offset *offsetp; |
d389af10 JK |
13473 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13474 | struct die_info *origin_die; | |
13475 | /* Iterator of the ORIGIN_DIE children. */ | |
13476 | struct die_info *origin_child_die; | |
d389af10 | 13477 | struct attribute *attr; |
cd02d79d PA |
13478 | struct dwarf2_cu *origin_cu; |
13479 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13480 | |
13481 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13482 | if (!attr) | |
13483 | return; | |
13484 | ||
cd02d79d PA |
13485 | /* Note that following die references may follow to a die in a |
13486 | different cu. */ | |
13487 | ||
13488 | origin_cu = cu; | |
13489 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13490 | ||
13491 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13492 | symbols in. */ | |
13493 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13494 | origin_cu->list_in_scope = cu->list_in_scope; | |
13495 | ||
edb3359d DJ |
13496 | if (die->tag != origin_die->tag |
13497 | && !(die->tag == DW_TAG_inlined_subroutine | |
13498 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13499 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13500 | sect_offset_str (die->sect_off), |
13501 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13502 | |
791afaa2 | 13503 | std::vector<sect_offset> offsets; |
d389af10 | 13504 | |
3ea89b92 PMR |
13505 | for (child_die = die->child; |
13506 | child_die && child_die->tag; | |
436c571c | 13507 | child_die = child_die->sibling) |
3ea89b92 PMR |
13508 | { |
13509 | struct die_info *child_origin_die; | |
13510 | struct dwarf2_cu *child_origin_cu; | |
13511 | ||
13512 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13513 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13514 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13515 | present in the abstract instance but not referenced in the concrete | |
13516 | one. */ | |
216f72a1 | 13517 | if (child_die->tag == DW_TAG_call_site |
dda83cd7 | 13518 | || child_die->tag == DW_TAG_GNU_call_site) |
3ea89b92 PMR |
13519 | continue; |
13520 | ||
c38f313d DJ |
13521 | /* For each CHILD_DIE, find the corresponding child of |
13522 | ORIGIN_DIE. If there is more than one layer of | |
13523 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13524 | but GCC versions at least through 4.4 generate this (GCC PR | |
13525 | 40573). */ | |
3ea89b92 PMR |
13526 | child_origin_die = child_die; |
13527 | child_origin_cu = cu; | |
c38f313d DJ |
13528 | while (1) |
13529 | { | |
cd02d79d PA |
13530 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13531 | child_origin_cu); | |
c38f313d DJ |
13532 | if (attr == NULL) |
13533 | break; | |
cd02d79d PA |
13534 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13535 | &child_origin_cu); | |
c38f313d DJ |
13536 | } |
13537 | ||
d389af10 JK |
13538 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13539 | counterpart may exist. */ | |
c38f313d | 13540 | if (child_origin_die != child_die) |
d389af10 | 13541 | { |
edb3359d DJ |
13542 | if (child_die->tag != child_origin_die->tag |
13543 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13544 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13545 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13546 | "different tags"), |
9d8780f0 SM |
13547 | sect_offset_str (child_die->sect_off), |
13548 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13549 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13550 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13551 | "different parents"), |
9d8780f0 SM |
13552 | sect_offset_str (child_die->sect_off), |
13553 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13554 | else |
791afaa2 | 13555 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13556 | } |
d389af10 | 13557 | } |
791afaa2 TT |
13558 | std::sort (offsets.begin (), offsets.end ()); |
13559 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13560 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13561 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13562 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13563 | "to DIE %s as their abstract origin"), |
13564 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13565 | |
791afaa2 | 13566 | offsetp = offsets.data (); |
d389af10 JK |
13567 | origin_child_die = origin_die->child; |
13568 | while (origin_child_die && origin_child_die->tag) | |
13569 | { | |
13570 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13571 | while (offsetp < offsets_end |
9c541725 | 13572 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13573 | offsetp++; |
b64f50a1 | 13574 | if (offsetp >= offsets_end |
9c541725 | 13575 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13576 | { |
adde2bff DE |
13577 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13578 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13579 | This can happen with mutually referenced abstract_origins. | |
13580 | PR 16581. */ | |
13581 | if (!origin_child_die->in_process) | |
13582 | process_die (origin_child_die, origin_cu); | |
d389af10 | 13583 | } |
436c571c | 13584 | origin_child_die = origin_child_die->sibling; |
d389af10 | 13585 | } |
cd02d79d | 13586 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13587 | |
13588 | if (cu != origin_cu) | |
13589 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13590 | } |
13591 | ||
c906108c | 13592 | static void |
e7c27a73 | 13593 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13594 | { |
5e22e966 | 13595 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13596 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 13597 | struct context_stack *newobj; |
c906108c SS |
13598 | CORE_ADDR lowpc; |
13599 | CORE_ADDR highpc; | |
13600 | struct die_info *child_die; | |
edb3359d | 13601 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13602 | const char *name; |
e142c38c | 13603 | CORE_ADDR baseaddr; |
801e3a5b | 13604 | struct block *block; |
edb3359d | 13605 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13606 | std::vector<struct symbol *> template_args; |
34eaf542 | 13607 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13608 | |
13609 | if (inlined_func) | |
13610 | { | |
13611 | /* If we do not have call site information, we can't show the | |
13612 | caller of this inlined function. That's too confusing, so | |
13613 | only use the scope for local variables. */ | |
13614 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13615 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13616 | if (call_line == NULL || call_file == NULL) | |
13617 | { | |
13618 | read_lexical_block_scope (die, cu); | |
13619 | return; | |
13620 | } | |
13621 | } | |
c906108c | 13622 | |
b3b3bada | 13623 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13624 | |
94af9270 | 13625 | name = dwarf2_name (die, cu); |
c906108c | 13626 | |
e8d05480 JB |
13627 | /* Ignore functions with missing or empty names. These are actually |
13628 | illegal according to the DWARF standard. */ | |
13629 | if (name == NULL) | |
13630 | { | |
b98664d3 | 13631 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13632 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13633 | return; |
13634 | } | |
13635 | ||
13636 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13637 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13638 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13639 | { |
ae4d0c03 | 13640 | attr = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 13641 | if (attr == nullptr || !attr->as_boolean ()) |
b98664d3 | 13642 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13643 | "for subprogram DIE at %s"), |
13644 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13645 | return; |
13646 | } | |
c906108c | 13647 | |
3e29f34a MR |
13648 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13649 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13650 | |
34eaf542 TT |
13651 | /* If we have any template arguments, then we must allocate a |
13652 | different sort of symbol. */ | |
436c571c | 13653 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
13654 | { |
13655 | if (child_die->tag == DW_TAG_template_type_param | |
13656 | || child_die->tag == DW_TAG_template_value_param) | |
13657 | { | |
8c14c3a3 | 13658 | templ_func = new (&objfile->objfile_obstack) template_symbol; |
cf724bc9 | 13659 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13660 | break; |
13661 | } | |
13662 | } | |
13663 | ||
c24bdb02 | 13664 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13665 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13666 | (struct symbol *) templ_func); | |
4c2df51b | 13667 | |
81873cc8 | 13668 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13669 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13670 | cu->language); |
13671 | ||
4cecd739 DJ |
13672 | /* If there is a location expression for DW_AT_frame_base, record |
13673 | it. */ | |
e142c38c | 13674 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13675 | if (attr != nullptr) |
fe978cb0 | 13676 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13677 | |
63e43d3a PMR |
13678 | /* If there is a location for the static link, record it. */ |
13679 | newobj->static_link = NULL; | |
13680 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13681 | if (attr != nullptr) |
63e43d3a | 13682 | { |
224c3ddb SM |
13683 | newobj->static_link |
13684 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 13685 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
293e7e51 | 13686 | cu->addr_type ()); |
63e43d3a PMR |
13687 | } |
13688 | ||
c24bdb02 | 13689 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13690 | |
639d11d3 | 13691 | if (die->child != NULL) |
c906108c | 13692 | { |
639d11d3 | 13693 | child_die = die->child; |
c906108c SS |
13694 | while (child_die && child_die->tag) |
13695 | { | |
34eaf542 TT |
13696 | if (child_die->tag == DW_TAG_template_type_param |
13697 | || child_die->tag == DW_TAG_template_value_param) | |
13698 | { | |
13699 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13700 | ||
f1078f66 | 13701 | if (arg != NULL) |
2f4732b0 | 13702 | template_args.push_back (arg); |
34eaf542 TT |
13703 | } |
13704 | else | |
13705 | process_die (child_die, cu); | |
436c571c | 13706 | child_die = child_die->sibling; |
c906108c SS |
13707 | } |
13708 | } | |
13709 | ||
d389af10 JK |
13710 | inherit_abstract_dies (die, cu); |
13711 | ||
4a811a97 UW |
13712 | /* If we have a DW_AT_specification, we might need to import using |
13713 | directives from the context of the specification DIE. See the | |
13714 | comment in determine_prefix. */ | |
13715 | if (cu->language == language_cplus | |
13716 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13717 | { | |
13718 | struct dwarf2_cu *spec_cu = cu; | |
13719 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13720 | ||
13721 | while (spec_die) | |
13722 | { | |
13723 | child_die = spec_die->child; | |
13724 | while (child_die && child_die->tag) | |
13725 | { | |
13726 | if (child_die->tag == DW_TAG_imported_module) | |
13727 | process_die (child_die, spec_cu); | |
436c571c | 13728 | child_die = child_die->sibling; |
4a811a97 UW |
13729 | } |
13730 | ||
13731 | /* In some cases, GCC generates specification DIEs that | |
13732 | themselves contain DW_AT_specification attributes. */ | |
13733 | spec_die = die_specification (spec_die, &spec_cu); | |
13734 | } | |
13735 | } | |
13736 | ||
c24bdb02 | 13737 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13738 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13739 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13740 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13741 | |
df8a16a1 | 13742 | /* For C++, set the block's scope. */ |
45280282 IB |
13743 | if ((cu->language == language_cplus |
13744 | || cu->language == language_fortran | |
c44af4eb TT |
13745 | || cu->language == language_d |
13746 | || cu->language == language_rust) | |
4d4ec4e5 | 13747 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13748 | block_set_scope (block, determine_prefix (die, cu), |
13749 | &objfile->objfile_obstack); | |
df8a16a1 | 13750 | |
801e3a5b JB |
13751 | /* If we have address ranges, record them. */ |
13752 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13753 | |
a60f3166 | 13754 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13755 | |
34eaf542 | 13756 | /* Attach template arguments to function. */ |
2f4732b0 | 13757 | if (!template_args.empty ()) |
34eaf542 TT |
13758 | { |
13759 | gdb_assert (templ_func != NULL); | |
13760 | ||
2f4732b0 | 13761 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13762 | templ_func->template_arguments |
dda83cd7 | 13763 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
8d749320 | 13764 | templ_func->n_template_arguments); |
34eaf542 | 13765 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13766 | template_args.data (), |
34eaf542 | 13767 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13768 | |
13769 | /* Make sure that the symtab is set on the new symbols. Even | |
13770 | though they don't appear in this symtab directly, other parts | |
13771 | of gdb assume that symbols do, and this is reasonably | |
13772 | true. */ | |
8634679f | 13773 | for (symbol *sym : template_args) |
3e1d3d8c | 13774 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13775 | } |
13776 | ||
208d8187 JB |
13777 | /* In C++, we can have functions nested inside functions (e.g., when |
13778 | a function declares a class that has methods). This means that | |
13779 | when we finish processing a function scope, we may need to go | |
13780 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13781 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13782 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13783 | |
921e78cf JB |
13784 | /* If we've finished processing a top-level function, subsequent |
13785 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13786 | if (cu->get_builder ()->outermost_context_p ()) |
13787 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13788 | } |
13789 | ||
13790 | /* Process all the DIES contained within a lexical block scope. Start | |
13791 | a new scope, process the dies, and then close the scope. */ | |
13792 | ||
13793 | static void | |
e7c27a73 | 13794 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13795 | { |
5e22e966 | 13796 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13797 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13798 | CORE_ADDR lowpc, highpc; |
13799 | struct die_info *child_die; | |
e142c38c DJ |
13800 | CORE_ADDR baseaddr; |
13801 | ||
b3b3bada | 13802 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13803 | |
13804 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13805 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13806 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13807 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13808 | describe ranges. */ |
e385593e JK |
13809 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13810 | { | |
13811 | case PC_BOUNDS_NOT_PRESENT: | |
13812 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13813 | there was no wrapping by that DW_TAG_lexical_block. | |
13814 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13815 | for (child_die = die->child; | |
13816 | child_die != NULL && child_die->tag; | |
436c571c | 13817 | child_die = child_die->sibling) |
4f7bc5ed TT |
13818 | { |
13819 | /* We might already be processing this DIE. This can happen | |
13820 | in an unusual circumstance -- where a subroutine A | |
13821 | appears lexically in another subroutine B, but A actually | |
13822 | inlines B. The recursion is broken here, rather than in | |
13823 | inherit_abstract_dies, because it seems better to simply | |
13824 | drop concrete children here. */ | |
13825 | if (!child_die->in_process) | |
13826 | process_die (child_die, cu); | |
13827 | } | |
e385593e JK |
13828 | return; |
13829 | case PC_BOUNDS_INVALID: | |
13830 | return; | |
13831 | } | |
3e29f34a MR |
13832 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13833 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13834 | |
c24bdb02 | 13835 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13836 | if (die->child != NULL) |
c906108c | 13837 | { |
639d11d3 | 13838 | child_die = die->child; |
c906108c SS |
13839 | while (child_die && child_die->tag) |
13840 | { | |
e7c27a73 | 13841 | process_die (child_die, cu); |
436c571c | 13842 | child_die = child_die->sibling; |
c906108c SS |
13843 | } |
13844 | } | |
3ea89b92 | 13845 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13846 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13847 | |
c24bdb02 KS |
13848 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13849 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13850 | { |
801e3a5b | 13851 | struct block *block |
dda83cd7 | 13852 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13853 | cstk.start_addr, highpc); |
801e3a5b JB |
13854 | |
13855 | /* Note that recording ranges after traversing children, as we | |
dda83cd7 SM |
13856 | do here, means that recording a parent's ranges entails |
13857 | walking across all its children's ranges as they appear in | |
13858 | the address map, which is quadratic behavior. | |
13859 | ||
13860 | It would be nicer to record the parent's ranges before | |
13861 | traversing its children, simply overriding whatever you find | |
13862 | there. But since we don't even decide whether to create a | |
13863 | block until after we've traversed its children, that's hard | |
13864 | to do. */ | |
801e3a5b | 13865 | dwarf2_record_block_ranges (die, block, baseaddr, cu); |
c906108c | 13866 | } |
c24bdb02 KS |
13867 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13868 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13869 | } |
13870 | ||
216f72a1 | 13871 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13872 | |
13873 | static void | |
13874 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13875 | { | |
5e22e966 | 13876 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 13877 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 13878 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13879 | CORE_ADDR pc, baseaddr; |
13880 | struct attribute *attr; | |
13881 | struct call_site *call_site, call_site_local; | |
13882 | void **slot; | |
13883 | int nparams; | |
13884 | struct die_info *child_die; | |
13885 | ||
b3b3bada | 13886 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13887 | |
216f72a1 JK |
13888 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13889 | if (attr == NULL) | |
13890 | { | |
13891 | /* This was a pre-DWARF-5 GNU extension alias | |
13892 | for DW_AT_call_return_pc. */ | |
13893 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13894 | } | |
96408a79 SA |
13895 | if (!attr) |
13896 | { | |
b98664d3 | 13897 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13898 | "DIE %s [in module %s]"), |
13899 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13900 | return; |
13901 | } | |
95f982e5 | 13902 | pc = attr->as_address () + baseaddr; |
3e29f34a | 13903 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13904 | |
13905 | if (cu->call_site_htab == NULL) | |
13906 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13907 | NULL, &objfile->objfile_obstack, | |
13908 | hashtab_obstack_allocate, NULL); | |
13909 | call_site_local.pc = pc; | |
13910 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13911 | if (*slot != NULL) | |
13912 | { | |
b98664d3 | 13913 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13914 | "DIE %s [in module %s]"), |
13915 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13916 | objfile_name (objfile)); |
96408a79 SA |
13917 | return; |
13918 | } | |
13919 | ||
13920 | /* Count parameters at the caller. */ | |
13921 | ||
13922 | nparams = 0; | |
13923 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13924 | child_die = child_die->sibling) |
96408a79 | 13925 | { |
216f72a1 | 13926 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 13927 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 | 13928 | { |
b98664d3 | 13929 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13930 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13931 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13932 | objfile_name (objfile)); |
96408a79 SA |
13933 | continue; |
13934 | } | |
13935 | ||
13936 | nparams++; | |
13937 | } | |
13938 | ||
224c3ddb SM |
13939 | call_site |
13940 | = ((struct call_site *) | |
13941 | obstack_alloc (&objfile->objfile_obstack, | |
13942 | sizeof (*call_site) | |
13943 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13944 | *slot = call_site; |
13945 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13946 | call_site->pc = pc; | |
13947 | ||
216f72a1 JK |
13948 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13949 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13950 | { |
13951 | struct die_info *func_die; | |
13952 | ||
13953 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13954 | for (func_die = die->parent; | |
13955 | func_die && func_die->tag != DW_TAG_subprogram | |
13956 | && func_die->tag != DW_TAG_subroutine_type; | |
13957 | func_die = func_die->parent); | |
13958 | ||
216f72a1 JK |
13959 | /* DW_AT_call_all_calls is a superset |
13960 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13961 | if (func_die |
dda83cd7 SM |
13962 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
13963 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
216f72a1 | 13964 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13965 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13966 | { | |
13967 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13968 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13969 | both the initial caller containing the real return address PC and | |
13970 | the final callee containing the current PC of a chain of tail | |
13971 | calls do not need to have the tail call list complete. But any | |
13972 | function candidate for a virtual tail call frame searched via | |
13973 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13974 | determined unambiguously. */ | |
13975 | } | |
13976 | else | |
13977 | { | |
13978 | struct type *func_type = NULL; | |
13979 | ||
13980 | if (func_die) | |
13981 | func_type = get_die_type (func_die, cu); | |
13982 | if (func_type != NULL) | |
13983 | { | |
78134374 | 13984 | gdb_assert (func_type->code () == TYPE_CODE_FUNC); |
96408a79 SA |
13985 | |
13986 | /* Enlist this call site to the function. */ | |
13987 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13988 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13989 | } | |
13990 | else | |
b98664d3 | 13991 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13992 | "DIE %s [in module %s]"), |
13993 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13994 | } |
13995 | } | |
13996 | ||
216f72a1 JK |
13997 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13998 | if (attr == NULL) | |
13999 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
14000 | if (attr == NULL) | |
14001 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 14002 | if (attr == NULL) |
216f72a1 JK |
14003 | { |
14004 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
14005 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14006 | } | |
96408a79 | 14007 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
9d2246fc | 14008 | if (!attr || (attr->form_is_block () && attr->as_block ()->size == 0)) |
96408a79 | 14009 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 14010 | else if (attr->form_is_block ()) |
96408a79 SA |
14011 | { |
14012 | struct dwarf2_locexpr_baton *dlbaton; | |
9d2246fc | 14013 | struct dwarf_block *block = attr->as_block (); |
96408a79 | 14014 | |
8d749320 | 14015 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
9d2246fc TT |
14016 | dlbaton->data = block->data; |
14017 | dlbaton->size = block->size; | |
a50264ba | 14018 | dlbaton->per_objfile = per_objfile; |
96408a79 SA |
14019 | dlbaton->per_cu = cu->per_cu; |
14020 | ||
14021 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
14022 | } | |
cd6c91b4 | 14023 | else if (attr->form_is_ref ()) |
96408a79 | 14024 | { |
96408a79 SA |
14025 | struct dwarf2_cu *target_cu = cu; |
14026 | struct die_info *target_die; | |
14027 | ||
ac9ec31b | 14028 | target_die = follow_die_ref (die, attr, &target_cu); |
5e22e966 | 14029 | gdb_assert (target_cu->per_objfile->objfile == objfile); |
96408a79 SA |
14030 | if (die_is_declaration (target_die, target_cu)) |
14031 | { | |
7d45c7c3 | 14032 | const char *target_physname; |
9112db09 JK |
14033 | |
14034 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 14035 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 14036 | if (target_physname == NULL) |
9112db09 | 14037 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 14038 | if (target_physname == NULL) |
b98664d3 | 14039 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 14040 | "physname, for referencing DIE %s [in module %s]"), |
9d8780f0 | 14041 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 14042 | else |
7d455152 | 14043 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
14044 | } |
14045 | else | |
14046 | { | |
14047 | CORE_ADDR lowpc; | |
14048 | ||
14049 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 14050 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 14051 | <= PC_BOUNDS_INVALID) |
b98664d3 | 14052 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 14053 | "low pc, for referencing DIE %s [in module %s]"), |
9d8780f0 | 14054 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 14055 | else |
3e29f34a MR |
14056 | { |
14057 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
14058 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
14059 | } | |
96408a79 SA |
14060 | } |
14061 | } | |
14062 | else | |
b98664d3 | 14063 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
14064 | "block nor reference, for DIE %s [in module %s]"), |
14065 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14066 | |
14067 | call_site->per_cu = cu->per_cu; | |
9f47c707 | 14068 | call_site->per_objfile = per_objfile; |
96408a79 SA |
14069 | |
14070 | for (child_die = die->child; | |
14071 | child_die && child_die->tag; | |
436c571c | 14072 | child_die = child_die->sibling) |
96408a79 | 14073 | { |
96408a79 | 14074 | struct call_site_parameter *parameter; |
1788b2d3 | 14075 | struct attribute *loc, *origin; |
96408a79 | 14076 | |
216f72a1 | 14077 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 14078 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 SA |
14079 | { |
14080 | /* Already printed the complaint above. */ | |
14081 | continue; | |
14082 | } | |
14083 | ||
14084 | gdb_assert (call_site->parameter_count < nparams); | |
14085 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14086 | ||
1788b2d3 JK |
14087 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14088 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14089 | register is contained in DW_AT_call_value. */ |
96408a79 | 14090 | |
24c5c679 | 14091 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14092 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14093 | if (origin == NULL) | |
14094 | { | |
14095 | /* This was a pre-DWARF-5 GNU extension alias | |
14096 | for DW_AT_call_parameter. */ | |
14097 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14098 | } | |
cd6c91b4 | 14099 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 14100 | { |
1788b2d3 | 14101 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 14102 | |
0826b30a | 14103 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 14104 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
14105 | { |
14106 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14107 | binding can be done only inside one CU. Such referenced DIE | |
14108 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 14109 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14110 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14111 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14112 | objfile_name (objfile)); |
d76b7dbc JK |
14113 | continue; |
14114 | } | |
9c541725 PA |
14115 | parameter->u.param_cu_off |
14116 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 14117 | } |
4fc6c0d5 | 14118 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 14119 | { |
b98664d3 | 14120 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
14121 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14122 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14123 | continue; |
14124 | } | |
24c5c679 | 14125 | else |
96408a79 | 14126 | { |
9d2246fc TT |
14127 | struct dwarf_block *block = loc->as_block (); |
14128 | ||
24c5c679 | 14129 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
9d2246fc | 14130 | (block->data, &block->data[block->size]); |
24c5c679 JK |
14131 | if (parameter->u.dwarf_reg != -1) |
14132 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
9d2246fc TT |
14133 | else if (dwarf_block_to_sp_offset (gdbarch, block->data, |
14134 | &block->data[block->size], | |
24c5c679 JK |
14135 | ¶meter->u.fb_offset)) |
14136 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14137 | else | |
14138 | { | |
b98664d3 | 14139 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 14140 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 14141 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14142 | "[in module %s]"), |
9d8780f0 | 14143 | sect_offset_str (child_die->sect_off), |
9c541725 | 14144 | objfile_name (objfile)); |
24c5c679 JK |
14145 | continue; |
14146 | } | |
96408a79 SA |
14147 | } |
14148 | ||
216f72a1 JK |
14149 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14150 | if (attr == NULL) | |
14151 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 14152 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 14153 | { |
b98664d3 | 14154 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14155 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14156 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14157 | objfile_name (objfile)); |
96408a79 SA |
14158 | continue; |
14159 | } | |
9d2246fc TT |
14160 | |
14161 | struct dwarf_block *block = attr->as_block (); | |
14162 | parameter->value = block->data; | |
14163 | parameter->value_size = block->size; | |
96408a79 SA |
14164 | |
14165 | /* Parameters are not pre-cleared by memset above. */ | |
14166 | parameter->data_value = NULL; | |
14167 | parameter->data_value_size = 0; | |
14168 | call_site->parameter_count++; | |
14169 | ||
216f72a1 JK |
14170 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14171 | if (attr == NULL) | |
14172 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 14173 | if (attr != nullptr) |
96408a79 | 14174 | { |
4fc6c0d5 | 14175 | if (!attr->form_is_block ()) |
b98664d3 | 14176 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14177 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14178 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14179 | objfile_name (objfile)); |
96408a79 SA |
14180 | else |
14181 | { | |
9d2246fc TT |
14182 | block = attr->as_block (); |
14183 | parameter->data_value = block->data; | |
14184 | parameter->data_value_size = block->size; | |
96408a79 SA |
14185 | } |
14186 | } | |
14187 | } | |
14188 | } | |
14189 | ||
71a3c369 TT |
14190 | /* Helper function for read_variable. If DIE represents a virtual |
14191 | table, then return the type of the concrete object that is | |
14192 | associated with the virtual table. Otherwise, return NULL. */ | |
14193 | ||
14194 | static struct type * | |
14195 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14196 | { | |
14197 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14198 | if (attr == NULL) | |
14199 | return NULL; | |
14200 | ||
14201 | /* Find the type DIE. */ | |
14202 | struct die_info *type_die = NULL; | |
14203 | struct dwarf2_cu *type_cu = cu; | |
14204 | ||
cd6c91b4 | 14205 | if (attr->form_is_ref ()) |
71a3c369 TT |
14206 | type_die = follow_die_ref (die, attr, &type_cu); |
14207 | if (type_die == NULL) | |
14208 | return NULL; | |
14209 | ||
14210 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14211 | return NULL; | |
14212 | return die_containing_type (type_die, type_cu); | |
14213 | } | |
14214 | ||
14215 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14216 | ||
14217 | static void | |
14218 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14219 | { | |
14220 | struct rust_vtable_symbol *storage = NULL; | |
14221 | ||
14222 | if (cu->language == language_rust) | |
14223 | { | |
14224 | struct type *containing_type = rust_containing_type (die, cu); | |
14225 | ||
14226 | if (containing_type != NULL) | |
14227 | { | |
5e22e966 | 14228 | struct objfile *objfile = cu->per_objfile->objfile; |
71a3c369 | 14229 | |
8c14c3a3 | 14230 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol; |
71a3c369 | 14231 | storage->concrete_type = containing_type; |
cf724bc9 | 14232 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14233 | } |
14234 | } | |
14235 | ||
e4a62c65 TV |
14236 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
14237 | struct attribute *abstract_origin | |
14238 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14239 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
14240 | if (res == NULL && loc && abstract_origin) | |
14241 | { | |
14242 | /* We have a variable without a name, but with a location and an abstract | |
14243 | origin. This may be a concrete instance of an abstract variable | |
14244 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
14245 | later. */ | |
14246 | struct dwarf2_cu *origin_cu = cu; | |
14247 | struct die_info *origin_die | |
14248 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
5e22e966 SM |
14249 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14250 | per_objfile->per_bfd->abstract_to_concrete | |
14251 | [origin_die->sect_off].push_back (die->sect_off); | |
e4a62c65 | 14252 | } |
71a3c369 TT |
14253 | } |
14254 | ||
43988095 JK |
14255 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14256 | reading .debug_rnglists. | |
14257 | Callback's type should be: | |
14258 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14259 | Return true if the attributes are present and valid, otherwise, | |
14260 | return false. */ | |
14261 | ||
14262 | template <typename Callback> | |
14263 | static bool | |
14264 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
d0ce17d8 | 14265 | dwarf_tag tag, Callback &&callback) |
43988095 | 14266 | { |
976ca316 SM |
14267 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14268 | struct objfile *objfile = per_objfile->objfile; | |
43988095 | 14269 | bfd *obfd = objfile->obfd; |
43988095 | 14270 | /* Base address selection entry. */ |
2b24b6e4 | 14271 | gdb::optional<CORE_ADDR> base; |
43988095 | 14272 | const gdb_byte *buffer; |
43988095 JK |
14273 | CORE_ADDR baseaddr; |
14274 | bool overflow = false; | |
d0ce17d8 CT |
14275 | ULONGEST addr_index; |
14276 | struct dwarf2_section_info *rnglists_section; | |
43988095 | 14277 | |
43988095 | 14278 | base = cu->base_address; |
d0ce17d8 CT |
14279 | rnglists_section = cu_debug_rnglists_section (cu, tag); |
14280 | rnglists_section->read (objfile); | |
43988095 | 14281 | |
d0ce17d8 | 14282 | if (offset >= rnglists_section->size) |
43988095 | 14283 | { |
b98664d3 | 14284 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
14285 | offset); |
14286 | return false; | |
14287 | } | |
d0ce17d8 | 14288 | buffer = rnglists_section->buffer + offset; |
43988095 | 14289 | |
b3b3bada | 14290 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
14291 | |
14292 | while (1) | |
14293 | { | |
7814882a JK |
14294 | /* Initialize it due to a false compiler warning. */ |
14295 | CORE_ADDR range_beginning = 0, range_end = 0; | |
d0ce17d8 CT |
14296 | const gdb_byte *buf_end = (rnglists_section->buffer |
14297 | + rnglists_section->size); | |
43988095 JK |
14298 | unsigned int bytes_read; |
14299 | ||
14300 | if (buffer == buf_end) | |
14301 | { | |
14302 | overflow = true; | |
14303 | break; | |
14304 | } | |
14305 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14306 | switch (rlet) | |
14307 | { | |
14308 | case DW_RLE_end_of_list: | |
14309 | break; | |
14310 | case DW_RLE_base_address: | |
14311 | if (buffer + cu->header.addr_size > buf_end) | |
14312 | { | |
14313 | overflow = true; | |
14314 | break; | |
14315 | } | |
c8a7a66f | 14316 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14317 | buffer += bytes_read; |
14318 | break; | |
dda83cd7 SM |
14319 | case DW_RLE_base_addressx: |
14320 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14321 | buffer += bytes_read; | |
14322 | base = read_addr_index (cu, addr_index); | |
14323 | break; | |
43988095 JK |
14324 | case DW_RLE_start_length: |
14325 | if (buffer + cu->header.addr_size > buf_end) | |
14326 | { | |
14327 | overflow = true; | |
14328 | break; | |
14329 | } | |
c8a7a66f TT |
14330 | range_beginning = cu->header.read_address (obfd, buffer, |
14331 | &bytes_read); | |
43988095 JK |
14332 | buffer += bytes_read; |
14333 | range_end = (range_beginning | |
14334 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14335 | buffer += bytes_read; | |
14336 | if (buffer > buf_end) | |
14337 | { | |
14338 | overflow = true; | |
14339 | break; | |
14340 | } | |
14341 | break; | |
d0ce17d8 | 14342 | case DW_RLE_startx_length: |
dda83cd7 SM |
14343 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
14344 | buffer += bytes_read; | |
14345 | range_beginning = read_addr_index (cu, addr_index); | |
14346 | if (buffer > buf_end) | |
14347 | { | |
14348 | overflow = true; | |
14349 | break; | |
14350 | } | |
14351 | range_end = (range_beginning | |
14352 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14353 | buffer += bytes_read; | |
14354 | break; | |
43988095 JK |
14355 | case DW_RLE_offset_pair: |
14356 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14357 | buffer += bytes_read; | |
14358 | if (buffer > buf_end) | |
14359 | { | |
14360 | overflow = true; | |
14361 | break; | |
14362 | } | |
14363 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14364 | buffer += bytes_read; | |
14365 | if (buffer > buf_end) | |
14366 | { | |
14367 | overflow = true; | |
14368 | break; | |
14369 | } | |
14370 | break; | |
14371 | case DW_RLE_start_end: | |
14372 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14373 | { | |
14374 | overflow = true; | |
14375 | break; | |
14376 | } | |
c8a7a66f TT |
14377 | range_beginning = cu->header.read_address (obfd, buffer, |
14378 | &bytes_read); | |
43988095 | 14379 | buffer += bytes_read; |
c8a7a66f | 14380 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14381 | buffer += bytes_read; |
14382 | break; | |
d0ce17d8 | 14383 | case DW_RLE_startx_endx: |
dda83cd7 SM |
14384 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
14385 | buffer += bytes_read; | |
14386 | range_beginning = read_addr_index (cu, addr_index); | |
14387 | if (buffer > buf_end) | |
14388 | { | |
14389 | overflow = true; | |
14390 | break; | |
14391 | } | |
14392 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14393 | buffer += bytes_read; | |
14394 | range_end = read_addr_index (cu, addr_index); | |
14395 | break; | |
43988095 | 14396 | default: |
b98664d3 | 14397 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14398 | return false; |
14399 | } | |
14400 | if (rlet == DW_RLE_end_of_list || overflow) | |
14401 | break; | |
14402 | if (rlet == DW_RLE_base_address) | |
14403 | continue; | |
14404 | ||
43988095 JK |
14405 | if (range_beginning > range_end) |
14406 | { | |
14407 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14408 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14409 | return false; |
14410 | } | |
14411 | ||
14412 | /* Empty range entries have no effect. */ | |
14413 | if (range_beginning == range_end) | |
14414 | continue; | |
14415 | ||
d0ce17d8 CT |
14416 | /* Only DW_RLE_offset_pair needs the base address added. */ |
14417 | if (rlet == DW_RLE_offset_pair) | |
14418 | { | |
14419 | if (!base.has_value ()) | |
14420 | { | |
14421 | /* We have no valid base address for the DW_RLE_offset_pair. */ | |
14422 | complaint (_("Invalid .debug_rnglists data (no base address for " | |
14423 | "DW_RLE_offset_pair)")); | |
14424 | return false; | |
14425 | } | |
14426 | ||
14427 | range_beginning += *base; | |
14428 | range_end += *base; | |
14429 | } | |
43988095 JK |
14430 | |
14431 | /* A not-uncommon case of bad debug info. | |
14432 | Don't pollute the addrmap with bad data. */ | |
14433 | if (range_beginning + baseaddr == 0 | |
976ca316 | 14434 | && !per_objfile->per_bfd->has_section_at_zero) |
43988095 | 14435 | { |
b98664d3 | 14436 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14437 | " [in module %s]"), objfile_name (objfile)); |
14438 | continue; | |
14439 | } | |
14440 | ||
14441 | callback (range_beginning, range_end); | |
14442 | } | |
14443 | ||
14444 | if (overflow) | |
14445 | { | |
b98664d3 | 14446 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14447 | "for DW_AT_ranges attribute"), |
14448 | offset); | |
14449 | return false; | |
14450 | } | |
14451 | ||
14452 | return true; | |
14453 | } | |
14454 | ||
14455 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14456 | Callback's type should be: | |
14457 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14458 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14459 | |
43988095 | 14460 | template <typename Callback> |
43039443 | 14461 | static int |
d0ce17d8 | 14462 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, dwarf_tag tag, |
43988095 | 14463 | Callback &&callback) |
43039443 | 14464 | { |
5e22e966 SM |
14465 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14466 | struct objfile *objfile = per_objfile->objfile; | |
43039443 JK |
14467 | struct comp_unit_head *cu_header = &cu->header; |
14468 | bfd *obfd = objfile->obfd; | |
14469 | unsigned int addr_size = cu_header->addr_size; | |
14470 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14471 | /* Base address selection entry. */ | |
2b24b6e4 | 14472 | gdb::optional<CORE_ADDR> base; |
43039443 | 14473 | unsigned int dummy; |
d521ce57 | 14474 | const gdb_byte *buffer; |
ff013f42 | 14475 | CORE_ADDR baseaddr; |
43039443 | 14476 | |
43988095 | 14477 | if (cu_header->version >= 5) |
d0ce17d8 | 14478 | return dwarf2_rnglists_process (offset, cu, tag, callback); |
43988095 | 14479 | |
d00adf39 | 14480 | base = cu->base_address; |
43039443 | 14481 | |
5e22e966 SM |
14482 | per_objfile->per_bfd->ranges.read (objfile); |
14483 | if (offset >= per_objfile->per_bfd->ranges.size) | |
43039443 | 14484 | { |
b98664d3 | 14485 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14486 | offset); |
14487 | return 0; | |
14488 | } | |
5e22e966 | 14489 | buffer = per_objfile->per_bfd->ranges.buffer + offset; |
43039443 | 14490 | |
b3b3bada | 14491 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 14492 | |
43039443 JK |
14493 | while (1) |
14494 | { | |
14495 | CORE_ADDR range_beginning, range_end; | |
14496 | ||
c8a7a66f | 14497 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 14498 | buffer += addr_size; |
c8a7a66f | 14499 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
14500 | buffer += addr_size; |
14501 | offset += 2 * addr_size; | |
14502 | ||
14503 | /* An end of list marker is a pair of zero addresses. */ | |
14504 | if (range_beginning == 0 && range_end == 0) | |
14505 | /* Found the end of list entry. */ | |
14506 | break; | |
14507 | ||
14508 | /* Each base address selection entry is a pair of 2 values. | |
14509 | The first is the largest possible address, the second is | |
14510 | the base address. Check for a base address here. */ | |
14511 | if ((range_beginning & mask) == mask) | |
14512 | { | |
28d2bfb9 AB |
14513 | /* If we found the largest possible address, then we already |
14514 | have the base address in range_end. */ | |
14515 | base = range_end; | |
43039443 JK |
14516 | continue; |
14517 | } | |
14518 | ||
2b24b6e4 | 14519 | if (!base.has_value ()) |
43039443 JK |
14520 | { |
14521 | /* We have no valid base address for the ranges | |
14522 | data. */ | |
b98664d3 | 14523 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14524 | return 0; |
14525 | } | |
14526 | ||
9277c30c UW |
14527 | if (range_beginning > range_end) |
14528 | { | |
14529 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14530 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14531 | return 0; |
14532 | } | |
14533 | ||
14534 | /* Empty range entries have no effect. */ | |
14535 | if (range_beginning == range_end) | |
14536 | continue; | |
14537 | ||
2b24b6e4 TT |
14538 | range_beginning += *base; |
14539 | range_end += *base; | |
43039443 | 14540 | |
01093045 DE |
14541 | /* A not-uncommon case of bad debug info. |
14542 | Don't pollute the addrmap with bad data. */ | |
14543 | if (range_beginning + baseaddr == 0 | |
5e22e966 | 14544 | && !per_objfile->per_bfd->has_section_at_zero) |
01093045 | 14545 | { |
b98664d3 | 14546 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14547 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14548 | continue; |
14549 | } | |
14550 | ||
5f46c5a5 JK |
14551 | callback (range_beginning, range_end); |
14552 | } | |
14553 | ||
14554 | return 1; | |
14555 | } | |
14556 | ||
14557 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14558 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14559 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14560 | ||
14561 | static int | |
14562 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14563 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
d0ce17d8 | 14564 | dwarf2_psymtab *ranges_pst, dwarf_tag tag) |
5f46c5a5 | 14565 | { |
5e22e966 | 14566 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14567 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 14568 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14569 | int low_set = 0; |
14570 | CORE_ADDR low = 0; | |
14571 | CORE_ADDR high = 0; | |
14572 | int retval; | |
14573 | ||
d0ce17d8 | 14574 | retval = dwarf2_ranges_process (offset, cu, tag, |
5f46c5a5 JK |
14575 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) |
14576 | { | |
9277c30c | 14577 | if (ranges_pst != NULL) |
3e29f34a MR |
14578 | { |
14579 | CORE_ADDR lowpc; | |
14580 | CORE_ADDR highpc; | |
14581 | ||
79748972 TT |
14582 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14583 | range_beginning + baseaddr) | |
14584 | - baseaddr); | |
14585 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14586 | range_end + baseaddr) | |
14587 | - baseaddr); | |
d320c2b5 TT |
14588 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
14589 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 14590 | } |
ff013f42 | 14591 | |
43039443 JK |
14592 | /* FIXME: This is recording everything as a low-high |
14593 | segment of consecutive addresses. We should have a | |
14594 | data structure for discontiguous block ranges | |
14595 | instead. */ | |
14596 | if (! low_set) | |
14597 | { | |
14598 | low = range_beginning; | |
14599 | high = range_end; | |
14600 | low_set = 1; | |
14601 | } | |
14602 | else | |
14603 | { | |
14604 | if (range_beginning < low) | |
14605 | low = range_beginning; | |
14606 | if (range_end > high) | |
14607 | high = range_end; | |
14608 | } | |
5f46c5a5 JK |
14609 | }); |
14610 | if (!retval) | |
14611 | return 0; | |
43039443 JK |
14612 | |
14613 | if (! low_set) | |
14614 | /* If the first entry is an end-of-list marker, the range | |
14615 | describes an empty scope, i.e. no instructions. */ | |
14616 | return 0; | |
14617 | ||
14618 | if (low_return) | |
14619 | *low_return = low; | |
14620 | if (high_return) | |
14621 | *high_return = high; | |
14622 | return 1; | |
14623 | } | |
14624 | ||
3a2b436a JK |
14625 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14626 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14627 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14628 | |
3a2b436a | 14629 | static enum pc_bounds_kind |
af34e669 | 14630 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14631 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14632 | dwarf2_psymtab *pst) |
c906108c | 14633 | { |
976ca316 | 14634 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
c906108c | 14635 | struct attribute *attr; |
91da1414 | 14636 | struct attribute *attr_high; |
af34e669 DJ |
14637 | CORE_ADDR low = 0; |
14638 | CORE_ADDR high = 0; | |
e385593e | 14639 | enum pc_bounds_kind ret; |
c906108c | 14640 | |
91da1414 MW |
14641 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14642 | if (attr_high) | |
af34e669 | 14643 | { |
e142c38c | 14644 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14645 | if (attr != nullptr) |
dda83cd7 | 14646 | { |
95f982e5 TT |
14647 | low = attr->as_address (); |
14648 | high = attr_high->as_address (); | |
cd6c91b4 | 14649 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14650 | high += low; |
91da1414 | 14651 | } |
af34e669 DJ |
14652 | else |
14653 | /* Found high w/o low attribute. */ | |
e385593e | 14654 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14655 | |
14656 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14657 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14658 | } |
c906108c | 14659 | else |
af34e669 | 14660 | { |
e142c38c | 14661 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
529908cb | 14662 | if (attr != nullptr && attr->form_is_unsigned ()) |
af34e669 | 14663 | { |
18a8505e | 14664 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 | 14665 | We take advantage of the fact that DW_AT_ranges does not appear |
d0ce17d8 CT |
14666 | in DW_TAG_compile_unit of DWO files. |
14667 | ||
14668 | Attributes of the form DW_FORM_rnglistx have already had their | |
14669 | value changed by read_rnglist_index and already include | |
14670 | DW_AT_rnglists_base, so don't need to add the ranges base, | |
14671 | either. */ | |
14672 | int need_ranges_base = (die->tag != DW_TAG_compile_unit | |
14673 | && attr->form != DW_FORM_rnglistx); | |
529908cb | 14674 | unsigned int ranges_offset = (attr->as_unsigned () |
ab435259 DE |
14675 | + (need_ranges_base |
14676 | ? cu->ranges_base | |
14677 | : 0)); | |
2e3cf129 | 14678 | |
af34e669 | 14679 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14680 | .debug_ranges section. */ |
d0ce17d8 CT |
14681 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst, |
14682 | die->tag)) | |
e385593e | 14683 | return PC_BOUNDS_INVALID; |
43039443 | 14684 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14685 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14686 | } |
e385593e JK |
14687 | else |
14688 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14689 | } |
c906108c | 14690 | |
48fbe735 | 14691 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14692 | if (high <= low) |
e385593e | 14693 | return PC_BOUNDS_INVALID; |
c906108c SS |
14694 | |
14695 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14696 | eliminate duplicate copies of functions and vtables and such. | |
14697 | The linker will arbitrarily choose one and discard the others. | |
14698 | The AT_*_pc values for such functions refer to local labels in | |
14699 | these sections. If the section from that file was discarded, the | |
14700 | labels are not in the output, so the relocs get a value of 0. | |
14701 | If this is a discarded function, mark the pc bounds as invalid, | |
14702 | so that GDB will ignore it. */ | |
976ca316 | 14703 | if (low == 0 && !per_objfile->per_bfd->has_section_at_zero) |
e385593e | 14704 | return PC_BOUNDS_INVALID; |
c906108c SS |
14705 | |
14706 | *lowpc = low; | |
96408a79 SA |
14707 | if (highpc) |
14708 | *highpc = high; | |
af34e669 | 14709 | return ret; |
c906108c SS |
14710 | } |
14711 | ||
b084d499 JB |
14712 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14713 | its low and high PC addresses. Do nothing if these addresses could not | |
14714 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14715 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14716 | ||
14717 | static void | |
14718 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
dda83cd7 SM |
14719 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
14720 | struct dwarf2_cu *cu) | |
b084d499 JB |
14721 | { |
14722 | CORE_ADDR low, high; | |
14723 | struct die_info *child = die->child; | |
14724 | ||
e385593e | 14725 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14726 | { |
325fac50 PA |
14727 | *lowpc = std::min (*lowpc, low); |
14728 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14729 | } |
14730 | ||
14731 | /* If the language does not allow nested subprograms (either inside | |
14732 | subprograms or lexical blocks), we're done. */ | |
14733 | if (cu->language != language_ada) | |
14734 | return; | |
6e70227d | 14735 | |
b084d499 JB |
14736 | /* Check all the children of the given DIE. If it contains nested |
14737 | subprograms, then check their pc bounds. Likewise, we need to | |
14738 | check lexical blocks as well, as they may also contain subprogram | |
14739 | definitions. */ | |
14740 | while (child && child->tag) | |
14741 | { | |
14742 | if (child->tag == DW_TAG_subprogram | |
dda83cd7 SM |
14743 | || child->tag == DW_TAG_lexical_block) |
14744 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 14745 | child = child->sibling; |
b084d499 JB |
14746 | } |
14747 | } | |
14748 | ||
fae299cd DC |
14749 | /* Get the low and high pc's represented by the scope DIE, and store |
14750 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14751 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14752 | ||
14753 | static void | |
14754 | get_scope_pc_bounds (struct die_info *die, | |
14755 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14756 | struct dwarf2_cu *cu) | |
14757 | { | |
14758 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14759 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14760 | CORE_ADDR current_low, current_high; | |
14761 | ||
3a2b436a | 14762 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14763 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14764 | { |
14765 | best_low = current_low; | |
14766 | best_high = current_high; | |
14767 | } | |
14768 | else | |
14769 | { | |
14770 | struct die_info *child = die->child; | |
14771 | ||
14772 | while (child && child->tag) | |
14773 | { | |
14774 | switch (child->tag) { | |
14775 | case DW_TAG_subprogram: | |
dda83cd7 | 14776 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14777 | break; |
14778 | case DW_TAG_namespace: | |
f55ee35c | 14779 | case DW_TAG_module: |
fae299cd DC |
14780 | /* FIXME: carlton/2004-01-16: Should we do this for |
14781 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14782 | that current GCC's always emit the DIEs corresponding | |
14783 | to definitions of methods of classes as children of a | |
14784 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14785 | the DIEs giving the declarations, which could be | |
14786 | anywhere). But I don't see any reason why the | |
14787 | standards says that they have to be there. */ | |
14788 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14789 | ||
14790 | if (current_low != ((CORE_ADDR) -1)) | |
14791 | { | |
325fac50 PA |
14792 | best_low = std::min (best_low, current_low); |
14793 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14794 | } |
14795 | break; | |
14796 | default: | |
0963b4bd | 14797 | /* Ignore. */ |
fae299cd DC |
14798 | break; |
14799 | } | |
14800 | ||
436c571c | 14801 | child = child->sibling; |
fae299cd DC |
14802 | } |
14803 | } | |
14804 | ||
14805 | *lowpc = best_low; | |
14806 | *highpc = best_high; | |
14807 | } | |
14808 | ||
801e3a5b JB |
14809 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14810 | in DIE. */ | |
380bca97 | 14811 | |
801e3a5b JB |
14812 | static void |
14813 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
dda83cd7 | 14814 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) |
801e3a5b | 14815 | { |
5e22e966 | 14816 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14817 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14818 | struct attribute *attr; |
91da1414 | 14819 | struct attribute *attr_high; |
801e3a5b | 14820 | |
91da1414 MW |
14821 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14822 | if (attr_high) | |
801e3a5b | 14823 | { |
801e3a5b | 14824 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14825 | if (attr != nullptr) |
dda83cd7 | 14826 | { |
95f982e5 TT |
14827 | CORE_ADDR low = attr->as_address (); |
14828 | CORE_ADDR high = attr_high->as_address (); | |
31aa7e4e | 14829 | |
cd6c91b4 | 14830 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14831 | high += low; |
9a619af0 | 14832 | |
3e29f34a MR |
14833 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14834 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14835 | cu->get_builder ()->record_block_range (block, low, high - 1); |
dda83cd7 | 14836 | } |
801e3a5b JB |
14837 | } |
14838 | ||
14839 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
529908cb | 14840 | if (attr != nullptr && attr->form_is_unsigned ()) |
801e3a5b | 14841 | { |
18a8505e | 14842 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 | 14843 | We take advantage of the fact that DW_AT_ranges does not appear |
d0ce17d8 CT |
14844 | in DW_TAG_compile_unit of DWO files. |
14845 | ||
14846 | Attributes of the form DW_FORM_rnglistx have already had their | |
14847 | value changed by read_rnglist_index and already include | |
14848 | DW_AT_rnglists_base, so don't need to add the ranges base, | |
14849 | either. */ | |
14850 | int need_ranges_base = (die->tag != DW_TAG_compile_unit | |
14851 | && attr->form != DW_FORM_rnglistx); | |
801e3a5b JB |
14852 | |
14853 | /* The value of the DW_AT_ranges attribute is the offset of the | |
dda83cd7 | 14854 | address range list in the .debug_ranges section. */ |
529908cb | 14855 | unsigned long offset = (attr->as_unsigned () |
ab435259 | 14856 | + (need_ranges_base ? cu->ranges_base : 0)); |
801e3a5b | 14857 | |
2d5f09ec | 14858 | std::vector<blockrange> blockvec; |
d0ce17d8 | 14859 | dwarf2_ranges_process (offset, cu, die->tag, |
5f46c5a5 JK |
14860 | [&] (CORE_ADDR start, CORE_ADDR end) |
14861 | { | |
58fdfd2c JK |
14862 | start += baseaddr; |
14863 | end += baseaddr; | |
5f46c5a5 JK |
14864 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14865 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14866 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14867 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14868 | }); |
2d5f09ec KB |
14869 | |
14870 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14871 | } |
14872 | } | |
14873 | ||
685b1105 JK |
14874 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14875 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14876 | |
685b1105 JK |
14877 | static void |
14878 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14879 | { |
38360086 | 14880 | int major, minor; |
60d5a603 JK |
14881 | |
14882 | if (cu->producer == NULL) | |
14883 | { | |
14884 | /* For unknown compilers expect their behavior is DWARF version | |
14885 | compliant. | |
14886 | ||
14887 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14888 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14889 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14890 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14891 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14892 | } |
b1ffba5a | 14893 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14894 | { |
38360086 MW |
14895 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14896 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14897 | } |
5230b05a | 14898 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14899 | { |
14900 | cu->producer_is_icc = true; | |
14901 | cu->producer_is_icc_lt_14 = major < 14; | |
14902 | } | |
c258c396 JD |
14903 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14904 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14905 | else |
14906 | { | |
14907 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14908 | compliant. */ | |
60d5a603 JK |
14909 | } |
14910 | ||
9068261f | 14911 | cu->checked_producer = true; |
685b1105 | 14912 | } |
ba919b58 | 14913 | |
685b1105 JK |
14914 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14915 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14916 | during 4.6.0 experimental. */ | |
14917 | ||
9068261f | 14918 | static bool |
685b1105 JK |
14919 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14920 | { | |
14921 | if (!cu->checked_producer) | |
14922 | check_producer (cu); | |
14923 | ||
14924 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14925 | } |
14926 | ||
c258c396 JD |
14927 | |
14928 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14929 | with incorrect is_stmt attributes. */ | |
14930 | ||
14931 | static bool | |
14932 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14933 | { | |
14934 | if (!cu->checked_producer) | |
14935 | check_producer (cu); | |
14936 | ||
14937 | return cu->producer_is_codewarrior; | |
14938 | } | |
14939 | ||
bf23a268 TT |
14940 | /* Return the accessibility of DIE, as given by DW_AT_accessibility. |
14941 | If that attribute is not available, return the appropriate | |
14942 | default. */ | |
60d5a603 JK |
14943 | |
14944 | static enum dwarf_access_attribute | |
bf23a268 | 14945 | dwarf2_access_attribute (struct die_info *die, struct dwarf2_cu *cu) |
60d5a603 | 14946 | { |
bf23a268 TT |
14947 | attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
14948 | if (attr != nullptr) | |
14949 | { | |
14950 | LONGEST value = attr->constant_value (-1); | |
14951 | if (value == DW_ACCESS_public | |
14952 | || value == DW_ACCESS_protected | |
14953 | || value == DW_ACCESS_private) | |
14954 | return (dwarf_access_attribute) value; | |
14955 | complaint (_("Unhandled DW_AT_accessibility value (%s)"), | |
14956 | plongest (value)); | |
14957 | } | |
14958 | ||
60d5a603 JK |
14959 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) |
14960 | { | |
14961 | /* The default DWARF 2 accessibility for members is public, the default | |
14962 | accessibility for inheritance is private. */ | |
14963 | ||
14964 | if (die->tag != DW_TAG_inheritance) | |
14965 | return DW_ACCESS_public; | |
14966 | else | |
14967 | return DW_ACCESS_private; | |
14968 | } | |
14969 | else | |
14970 | { | |
14971 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14972 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14973 | depends on the container kind. */ | |
14974 | ||
14975 | if (die->parent->tag == DW_TAG_class_type) | |
14976 | return DW_ACCESS_private; | |
14977 | else | |
14978 | return DW_ACCESS_public; | |
14979 | } | |
14980 | } | |
14981 | ||
74ac6d43 TT |
14982 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14983 | offset. If the attribute was not found return 0, otherwise return | |
14984 | 1. If it was found but could not properly be handled, set *OFFSET | |
14985 | to 0. */ | |
14986 | ||
14987 | static int | |
14988 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14989 | LONGEST *offset) | |
14990 | { | |
14991 | struct attribute *attr; | |
14992 | ||
14993 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14994 | if (attr != NULL) | |
14995 | { | |
14996 | *offset = 0; | |
14997 | ||
14998 | /* Note that we do not check for a section offset first here. | |
14999 | This is because DW_AT_data_member_location is new in DWARF 4, | |
15000 | so if we see it, we can assume that a constant form is really | |
15001 | a constant and not a section offset. */ | |
cd6c91b4 | 15002 | if (attr->form_is_constant ()) |
0826b30a | 15003 | *offset = attr->constant_value (0); |
cd6c91b4 | 15004 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 15005 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 15006 | else if (attr->form_is_block ()) |
9d2246fc | 15007 | *offset = decode_locdesc (attr->as_block (), cu); |
74ac6d43 TT |
15008 | else |
15009 | dwarf2_complex_location_expr_complaint (); | |
15010 | ||
15011 | return 1; | |
15012 | } | |
15013 | ||
15014 | return 0; | |
15015 | } | |
15016 | ||
7d79de9a TT |
15017 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
15018 | ||
15019 | static void | |
15020 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
15021 | struct field *field) | |
15022 | { | |
15023 | struct attribute *attr; | |
15024 | ||
15025 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
15026 | if (attr != NULL) | |
15027 | { | |
15028 | if (attr->form_is_constant ()) | |
15029 | { | |
15030 | LONGEST offset = attr->constant_value (0); | |
15031 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
15032 | } | |
15033 | else if (attr->form_is_section_offset ()) | |
15034 | dwarf2_complex_location_expr_complaint (); | |
15035 | else if (attr->form_is_block ()) | |
15036 | { | |
15037 | bool handled; | |
9d2246fc | 15038 | CORE_ADDR offset = decode_locdesc (attr->as_block (), cu, &handled); |
7d79de9a TT |
15039 | if (handled) |
15040 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
15041 | else | |
15042 | { | |
5e22e966 SM |
15043 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
15044 | struct objfile *objfile = per_objfile->objfile; | |
7d79de9a TT |
15045 | struct dwarf2_locexpr_baton *dlbaton |
15046 | = XOBNEW (&objfile->objfile_obstack, | |
15047 | struct dwarf2_locexpr_baton); | |
9d2246fc TT |
15048 | dlbaton->data = attr->as_block ()->data; |
15049 | dlbaton->size = attr->as_block ()->size; | |
7d79de9a TT |
15050 | /* When using this baton, we want to compute the address |
15051 | of the field, not the value. This is why | |
15052 | is_reference is set to false here. */ | |
15053 | dlbaton->is_reference = false; | |
5e22e966 | 15054 | dlbaton->per_objfile = per_objfile; |
7d79de9a TT |
15055 | dlbaton->per_cu = cu->per_cu; |
15056 | ||
15057 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
15058 | } | |
15059 | } | |
15060 | else | |
15061 | dwarf2_complex_location_expr_complaint (); | |
15062 | } | |
15063 | } | |
15064 | ||
c906108c SS |
15065 | /* Add an aggregate field to the field list. */ |
15066 | ||
15067 | static void | |
107d2387 | 15068 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15069 | struct dwarf2_cu *cu) |
6e70227d | 15070 | { |
5e22e966 | 15071 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 15072 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
15073 | struct nextfield *new_field; |
15074 | struct attribute *attr; | |
15075 | struct field *fp; | |
15d034d0 | 15076 | const char *fieldname = ""; |
c906108c | 15077 | |
7d0ccb61 DJ |
15078 | if (die->tag == DW_TAG_inheritance) |
15079 | { | |
be2daae6 TT |
15080 | fip->baseclasses.emplace_back (); |
15081 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
15082 | } |
15083 | else | |
15084 | { | |
be2daae6 TT |
15085 | fip->fields.emplace_back (); |
15086 | new_field = &fip->fields.back (); | |
7d0ccb61 | 15087 | } |
be2daae6 | 15088 | |
9c6a1327 TT |
15089 | new_field->offset = die->sect_off; |
15090 | ||
bf23a268 | 15091 | new_field->accessibility = dwarf2_access_attribute (die, cu); |
c906108c | 15092 | if (new_field->accessibility != DW_ACCESS_public) |
264fc0e2 | 15093 | fip->non_public_fields = true; |
60d5a603 | 15094 | |
e142c38c | 15095 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 15096 | if (attr != nullptr) |
23dca5c3 | 15097 | new_field->virtuality = attr->as_virtuality (); |
60d5a603 JK |
15098 | else |
15099 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15100 | |
15101 | fp = &new_field->field; | |
a9a9bd0f | 15102 | |
e142c38c | 15103 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15104 | { |
a9a9bd0f | 15105 | /* Data member other than a C++ static data member. */ |
6e70227d | 15106 | |
c906108c | 15107 | /* Get type of field. */ |
5d14b6e5 | 15108 | fp->set_type (die_type (die, cu)); |
c906108c | 15109 | |
d6a843b5 | 15110 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15111 | |
c906108c | 15112 | /* Get bit size of field (zero if none). */ |
e142c38c | 15113 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 15114 | if (attr != nullptr) |
c906108c | 15115 | { |
529908cb | 15116 | FIELD_BITSIZE (*fp) = attr->constant_value (0); |
c906108c SS |
15117 | } |
15118 | else | |
15119 | { | |
15120 | FIELD_BITSIZE (*fp) = 0; | |
15121 | } | |
15122 | ||
15123 | /* Get bit offset of field. */ | |
7d79de9a | 15124 | handle_data_member_location (die, cu, fp); |
e142c38c | 15125 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
7c184d33 | 15126 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c | 15127 | { |
d5a22e77 | 15128 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
15129 | { |
15130 | /* For big endian bits, the DW_AT_bit_offset gives the | |
dda83cd7 SM |
15131 | additional bit offset from the MSB of the containing |
15132 | anonymous object to the MSB of the field. We don't | |
15133 | have to do anything special since we don't need to | |
15134 | know the size of the anonymous object. */ | |
529908cb | 15135 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) |
7c184d33 | 15136 | + attr->constant_value (0))); |
c906108c SS |
15137 | } |
15138 | else | |
15139 | { | |
15140 | /* For little endian bits, compute the bit offset to the | |
dda83cd7 SM |
15141 | MSB of the anonymous object, subtract off the number of |
15142 | bits from the MSB of the field to the MSB of the | |
15143 | object, and then subtract off the number of bits of | |
15144 | the field itself. The result is the bit offset of | |
15145 | the LSB of the field. */ | |
c906108c | 15146 | int anonymous_size; |
7c184d33 | 15147 | int bit_offset = attr->constant_value (0); |
c906108c | 15148 | |
e142c38c | 15149 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
7c184d33 | 15150 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c SS |
15151 | { |
15152 | /* The size of the anonymous object containing | |
15153 | the bit field is explicit, so use the | |
15154 | indicated size (in bytes). */ | |
7c184d33 | 15155 | anonymous_size = attr->constant_value (0); |
c906108c SS |
15156 | } |
15157 | else | |
15158 | { | |
15159 | /* The size of the anonymous object containing | |
15160 | the bit field must be inferred from the type | |
15161 | attribute of the data member containing the | |
15162 | bit field. */ | |
5d14b6e5 | 15163 | anonymous_size = TYPE_LENGTH (fp->type ()); |
c906108c | 15164 | } |
f41f5e61 PA |
15165 | SET_FIELD_BITPOS (*fp, |
15166 | (FIELD_BITPOS (*fp) | |
15167 | + anonymous_size * bits_per_byte | |
15168 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15169 | } |
15170 | } | |
da5b30da AA |
15171 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15172 | if (attr != NULL) | |
15173 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 15174 | + attr->constant_value (0))); |
c906108c SS |
15175 | |
15176 | /* Get name of field. */ | |
39cbfefa DJ |
15177 | fieldname = dwarf2_name (die, cu); |
15178 | if (fieldname == NULL) | |
15179 | fieldname = ""; | |
d8151005 DJ |
15180 | |
15181 | /* The name is already allocated along with this objfile, so we don't | |
15182 | need to duplicate it for the type. */ | |
15183 | fp->name = fieldname; | |
c906108c SS |
15184 | |
15185 | /* Change accessibility for artificial fields (e.g. virtual table | |
dda83cd7 | 15186 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15187 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15188 | { |
d48cc9dd | 15189 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c | 15190 | new_field->accessibility = DW_ACCESS_private; |
264fc0e2 | 15191 | fip->non_public_fields = true; |
c906108c SS |
15192 | } |
15193 | } | |
a9a9bd0f | 15194 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15195 | { |
a9a9bd0f DC |
15196 | /* C++ static member. */ |
15197 | ||
15198 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15199 | is a declaration, but all versions of G++ as of this writing | |
15200 | (so through at least 3.2.1) incorrectly generate | |
15201 | DW_TAG_variable tags. */ | |
6e70227d | 15202 | |
ff355380 | 15203 | const char *physname; |
c906108c | 15204 | |
a9a9bd0f | 15205 | /* Get name of field. */ |
39cbfefa DJ |
15206 | fieldname = dwarf2_name (die, cu); |
15207 | if (fieldname == NULL) | |
c906108c SS |
15208 | return; |
15209 | ||
254e6b9e | 15210 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15211 | if (attr |
15212 | /* Only create a symbol if this is an external value. | |
15213 | new_symbol checks this and puts the value in the global symbol | |
15214 | table, which we want. If it is not external, new_symbol | |
15215 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15216 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15217 | { |
15218 | /* A static const member, not much different than an enum as far as | |
15219 | we're concerned, except that we can support more types. */ | |
15220 | new_symbol (die, NULL, cu); | |
15221 | } | |
15222 | ||
2df3850c | 15223 | /* Get physical name. */ |
ff355380 | 15224 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15225 | |
d8151005 DJ |
15226 | /* The name is already allocated along with this objfile, so we don't |
15227 | need to duplicate it for the type. */ | |
15228 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
5d14b6e5 | 15229 | fp->set_type (die_type (die, cu)); |
d8151005 | 15230 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15231 | } |
15232 | else if (die->tag == DW_TAG_inheritance) | |
15233 | { | |
74ac6d43 | 15234 | /* C++ base class field. */ |
7d79de9a | 15235 | handle_data_member_location (die, cu, fp); |
c906108c | 15236 | FIELD_BITSIZE (*fp) = 0; |
5d14b6e5 SM |
15237 | fp->set_type (die_type (die, cu)); |
15238 | FIELD_NAME (*fp) = fp->type ()->name (); | |
c906108c | 15239 | } |
2ddeaf8a TT |
15240 | else |
15241 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15242 | } |
15243 | ||
883fd55a KS |
15244 | /* Can the type given by DIE define another type? */ |
15245 | ||
15246 | static bool | |
15247 | type_can_define_types (const struct die_info *die) | |
15248 | { | |
15249 | switch (die->tag) | |
15250 | { | |
15251 | case DW_TAG_typedef: | |
15252 | case DW_TAG_class_type: | |
15253 | case DW_TAG_structure_type: | |
15254 | case DW_TAG_union_type: | |
15255 | case DW_TAG_enumeration_type: | |
15256 | return true; | |
15257 | ||
15258 | default: | |
15259 | return false; | |
15260 | } | |
15261 | } | |
15262 | ||
15263 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15264 | |
15265 | static void | |
883fd55a KS |
15266 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15267 | struct dwarf2_cu *cu) | |
6e70227d | 15268 | { |
be2daae6 TT |
15269 | struct decl_field fp; |
15270 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15271 | |
883fd55a | 15272 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15273 | |
883fd55a | 15274 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15275 | fp.name = dwarf2_name (die, cu); |
15276 | fp.type = read_type_die (die, cu); | |
98751a41 | 15277 | |
c191a687 | 15278 | /* Save accessibility. */ |
bf23a268 | 15279 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
c191a687 KS |
15280 | switch (accessibility) |
15281 | { | |
15282 | case DW_ACCESS_public: | |
15283 | /* The assumed value if neither private nor protected. */ | |
15284 | break; | |
15285 | case DW_ACCESS_private: | |
be2daae6 | 15286 | fp.is_private = 1; |
c191a687 KS |
15287 | break; |
15288 | case DW_ACCESS_protected: | |
be2daae6 | 15289 | fp.is_protected = 1; |
c191a687 | 15290 | break; |
c191a687 KS |
15291 | } |
15292 | ||
883fd55a | 15293 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15294 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15295 | else |
be2daae6 | 15296 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15297 | } |
15298 | ||
9c6a1327 TT |
15299 | /* A convenience typedef that's used when finding the discriminant |
15300 | field for a variant part. */ | |
1b95cdb7 SM |
15301 | typedef std::unordered_map<sect_offset, int, gdb::hash_enum<sect_offset>> |
15302 | offset_map_type; | |
9c6a1327 TT |
15303 | |
15304 | /* Compute the discriminant range for a given variant. OBSTACK is | |
15305 | where the results will be stored. VARIANT is the variant to | |
15306 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
15307 | or unsigned. */ | |
15308 | ||
15309 | static const gdb::array_view<discriminant_range> | |
15310 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
15311 | bool is_unsigned) | |
15312 | { | |
15313 | std::vector<discriminant_range> ranges; | |
15314 | ||
15315 | if (variant.default_branch) | |
15316 | return {}; | |
15317 | ||
15318 | if (variant.discr_list_data == nullptr) | |
15319 | { | |
15320 | discriminant_range r | |
15321 | = {variant.discriminant_value, variant.discriminant_value}; | |
15322 | ranges.push_back (r); | |
15323 | } | |
15324 | else | |
15325 | { | |
15326 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
15327 | variant.discr_list_data->size); | |
15328 | while (!data.empty ()) | |
15329 | { | |
15330 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
15331 | { | |
15332 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
15333 | break; | |
15334 | } | |
15335 | bool is_range = data[0] == DW_DSC_range; | |
15336 | data = data.slice (1); | |
15337 | ||
15338 | ULONGEST low, high; | |
15339 | unsigned int bytes_read; | |
15340 | ||
15341 | if (data.empty ()) | |
15342 | { | |
15343 | complaint (_("DW_AT_discr_list missing low value")); | |
15344 | break; | |
15345 | } | |
15346 | if (is_unsigned) | |
15347 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
15348 | else | |
15349 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
15350 | &bytes_read); | |
15351 | data = data.slice (bytes_read); | |
15352 | ||
15353 | if (is_range) | |
15354 | { | |
15355 | if (data.empty ()) | |
15356 | { | |
15357 | complaint (_("DW_AT_discr_list missing high value")); | |
15358 | break; | |
15359 | } | |
15360 | if (is_unsigned) | |
15361 | high = read_unsigned_leb128 (nullptr, data.data (), | |
15362 | &bytes_read); | |
15363 | else | |
15364 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
15365 | &bytes_read); | |
15366 | data = data.slice (bytes_read); | |
15367 | } | |
15368 | else | |
15369 | high = low; | |
15370 | ||
15371 | ranges.push_back ({ low, high }); | |
15372 | } | |
15373 | } | |
15374 | ||
15375 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
15376 | ranges.size ()); | |
15377 | std::copy (ranges.begin (), ranges.end (), result); | |
15378 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
15379 | } | |
15380 | ||
15381 | static const gdb::array_view<variant_part> create_variant_parts | |
15382 | (struct obstack *obstack, | |
15383 | const offset_map_type &offset_map, | |
15384 | struct field_info *fi, | |
15385 | const std::vector<variant_part_builder> &variant_parts); | |
15386 | ||
15387 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
15388 | the variant to fill in. OBSTACK is where any needed allocations | |
15389 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
15390 | fields for the type. FI describes the fields of the type we're | |
15391 | processing. FIELD is the variant field we're converting. */ | |
15392 | ||
15393 | static void | |
15394 | create_one_variant (variant &result, struct obstack *obstack, | |
15395 | const offset_map_type &offset_map, | |
15396 | struct field_info *fi, const variant_field &field) | |
15397 | { | |
15398 | result.discriminants = convert_variant_range (obstack, field, false); | |
15399 | result.first_field = field.first_field + fi->baseclasses.size (); | |
15400 | result.last_field = field.last_field + fi->baseclasses.size (); | |
15401 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
15402 | field.variant_parts); | |
15403 | } | |
15404 | ||
15405 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
15406 | is the variant part to fill in. OBSTACK is where any needed | |
15407 | allocations will be done. OFFSET_MAP holds the mapping from | |
15408 | section offsets to fields for the type. FI describes the fields of | |
15409 | the type we're processing. BUILDER is the variant part to be | |
15410 | converted. */ | |
15411 | ||
15412 | static void | |
15413 | create_one_variant_part (variant_part &result, | |
15414 | struct obstack *obstack, | |
15415 | const offset_map_type &offset_map, | |
15416 | struct field_info *fi, | |
15417 | const variant_part_builder &builder) | |
15418 | { | |
15419 | auto iter = offset_map.find (builder.discriminant_offset); | |
15420 | if (iter == offset_map.end ()) | |
15421 | { | |
15422 | result.discriminant_index = -1; | |
15423 | /* Doesn't matter. */ | |
15424 | result.is_unsigned = false; | |
15425 | } | |
15426 | else | |
15427 | { | |
15428 | result.discriminant_index = iter->second; | |
15429 | result.is_unsigned | |
c6d940a9 | 15430 | = fi->fields[result.discriminant_index].field.type ()->is_unsigned (); |
9c6a1327 TT |
15431 | } |
15432 | ||
15433 | size_t n = builder.variants.size (); | |
15434 | variant *output = new (obstack) variant[n]; | |
15435 | for (size_t i = 0; i < n; ++i) | |
15436 | create_one_variant (output[i], obstack, offset_map, fi, | |
15437 | builder.variants[i]); | |
15438 | ||
15439 | result.variants = gdb::array_view<variant> (output, n); | |
15440 | } | |
15441 | ||
15442 | /* Create a vector of variant parts that can be attached to a type. | |
15443 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
15444 | holds the mapping from section offsets to fields for the type. FI | |
15445 | describes the fields of the type we're processing. VARIANT_PARTS | |
15446 | is the vector to convert. */ | |
15447 | ||
15448 | static const gdb::array_view<variant_part> | |
15449 | create_variant_parts (struct obstack *obstack, | |
15450 | const offset_map_type &offset_map, | |
15451 | struct field_info *fi, | |
15452 | const std::vector<variant_part_builder> &variant_parts) | |
15453 | { | |
15454 | if (variant_parts.empty ()) | |
15455 | return {}; | |
15456 | ||
15457 | size_t n = variant_parts.size (); | |
15458 | variant_part *result = new (obstack) variant_part[n]; | |
15459 | for (size_t i = 0; i < n; ++i) | |
15460 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
15461 | variant_parts[i]); | |
15462 | ||
15463 | return gdb::array_view<variant_part> (result, n); | |
15464 | } | |
15465 | ||
15466 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
15467 | done. */ | |
15468 | ||
15469 | static void | |
15470 | add_variant_property (struct field_info *fip, struct type *type, | |
15471 | struct dwarf2_cu *cu) | |
15472 | { | |
15473 | /* Map section offsets of fields to their field index. Note the | |
15474 | field index here does not take the number of baseclasses into | |
15475 | account. */ | |
15476 | offset_map_type offset_map; | |
15477 | for (int i = 0; i < fip->fields.size (); ++i) | |
15478 | offset_map[fip->fields[i].offset] = i; | |
15479 | ||
5e22e966 | 15480 | struct objfile *objfile = cu->per_objfile->objfile; |
9c6a1327 TT |
15481 | gdb::array_view<variant_part> parts |
15482 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
15483 | fip->variant_parts); | |
15484 | ||
15485 | struct dynamic_prop prop; | |
8c2e4e06 SM |
15486 | prop.set_variant_parts ((gdb::array_view<variant_part> *) |
15487 | obstack_copy (&objfile->objfile_obstack, &parts, | |
15488 | sizeof (parts))); | |
9c6a1327 | 15489 | |
5c54719c | 15490 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
9c6a1327 TT |
15491 | } |
15492 | ||
c906108c SS |
15493 | /* Create the vector of fields, and attach it to the type. */ |
15494 | ||
15495 | static void | |
fba45db2 | 15496 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15497 | struct dwarf2_cu *cu) |
c906108c | 15498 | { |
317f7127 | 15499 | int nfields = fip->nfields (); |
c906108c SS |
15500 | |
15501 | /* Record the field count, allocate space for the array of fields, | |
15502 | and create blank accessibility bitfields if necessary. */ | |
5e33d5f4 | 15503 | type->set_num_fields (nfields); |
3cabb6b0 SM |
15504 | type->set_fields |
15505 | ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * nfields)); | |
c906108c | 15506 | |
b4ba55a1 | 15507 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15508 | { |
15509 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15510 | ||
15511 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15512 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15513 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15514 | ||
15515 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15516 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15517 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15518 | ||
774b6a14 TT |
15519 | TYPE_FIELD_IGNORE_BITS (type) = |
15520 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15521 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15522 | } |
15523 | ||
15524 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15525 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15526 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15527 | { |
be2daae6 | 15528 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15529 | unsigned char *pointer; |
c906108c SS |
15530 | |
15531 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15532 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15533 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15534 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15535 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15536 | } |
15537 | ||
9c6a1327 TT |
15538 | if (!fip->variant_parts.empty ()) |
15539 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 15540 | |
be2daae6 TT |
15541 | /* Copy the saved-up fields into the field vector. */ |
15542 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15543 | { |
be2daae6 TT |
15544 | struct nextfield &field |
15545 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15546 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15547 | |
ceacbf6e | 15548 | type->field (i) = field.field; |
be2daae6 | 15549 | switch (field.accessibility) |
c906108c | 15550 | { |
c5aa993b | 15551 | case DW_ACCESS_private: |
b4ba55a1 | 15552 | if (cu->language != language_ada) |
be2daae6 | 15553 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15554 | break; |
c906108c | 15555 | |
c5aa993b | 15556 | case DW_ACCESS_protected: |
b4ba55a1 | 15557 | if (cu->language != language_ada) |
be2daae6 | 15558 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15559 | break; |
c906108c | 15560 | |
c5aa993b JM |
15561 | case DW_ACCESS_public: |
15562 | break; | |
c906108c | 15563 | |
c5aa993b JM |
15564 | default: |
15565 | /* Unknown accessibility. Complain and treat it as public. */ | |
15566 | { | |
b98664d3 | 15567 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15568 | field.accessibility); |
c5aa993b JM |
15569 | } |
15570 | break; | |
c906108c | 15571 | } |
be2daae6 | 15572 | if (i < fip->baseclasses.size ()) |
c906108c | 15573 | { |
be2daae6 | 15574 | switch (field.virtuality) |
c906108c | 15575 | { |
c5aa993b JM |
15576 | case DW_VIRTUALITY_virtual: |
15577 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15578 | if (cu->language == language_ada) |
a73c6dcd | 15579 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15580 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15581 | break; |
c906108c SS |
15582 | } |
15583 | } | |
c906108c SS |
15584 | } |
15585 | } | |
15586 | ||
7d27a96d TT |
15587 | /* Return true if this member function is a constructor, false |
15588 | otherwise. */ | |
15589 | ||
15590 | static int | |
15591 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15592 | { | |
15593 | const char *fieldname; | |
fe978cb0 | 15594 | const char *type_name; |
7d27a96d TT |
15595 | int len; |
15596 | ||
15597 | if (die->parent == NULL) | |
15598 | return 0; | |
15599 | ||
15600 | if (die->parent->tag != DW_TAG_structure_type | |
15601 | && die->parent->tag != DW_TAG_union_type | |
15602 | && die->parent->tag != DW_TAG_class_type) | |
15603 | return 0; | |
15604 | ||
15605 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15606 | type_name = dwarf2_name (die->parent, cu); |
15607 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15608 | return 0; |
15609 | ||
15610 | len = strlen (fieldname); | |
fe978cb0 PA |
15611 | return (strncmp (fieldname, type_name, len) == 0 |
15612 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15613 | } |
15614 | ||
c906108c SS |
15615 | /* Add a member function to the proper fieldlist. */ |
15616 | ||
15617 | static void | |
107d2387 | 15618 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15619 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15620 | { |
5e22e966 | 15621 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 15622 | struct attribute *attr; |
c906108c | 15623 | int i; |
be2daae6 | 15624 | struct fnfieldlist *flp = nullptr; |
c906108c | 15625 | struct fn_field *fnp; |
15d034d0 | 15626 | const char *fieldname; |
f792889a | 15627 | struct type *this_type; |
c906108c | 15628 | |
b4ba55a1 | 15629 | if (cu->language == language_ada) |
a73c6dcd | 15630 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15631 | |
2df3850c | 15632 | /* Get name of member function. */ |
39cbfefa DJ |
15633 | fieldname = dwarf2_name (die, cu); |
15634 | if (fieldname == NULL) | |
2df3850c | 15635 | return; |
c906108c | 15636 | |
c906108c | 15637 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15638 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15639 | { |
27bfe10e | 15640 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15641 | { |
15642 | flp = &fip->fnfieldlists[i]; | |
15643 | break; | |
15644 | } | |
c906108c SS |
15645 | } |
15646 | ||
be2daae6 TT |
15647 | /* Create a new fnfieldlist if necessary. */ |
15648 | if (flp == nullptr) | |
c906108c | 15649 | { |
be2daae6 TT |
15650 | fip->fnfieldlists.emplace_back (); |
15651 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15652 | flp->name = fieldname; |
be2daae6 | 15653 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15654 | } |
15655 | ||
be2daae6 TT |
15656 | /* Create a new member function field and add it to the vector of |
15657 | fnfieldlists. */ | |
15658 | flp->fnfields.emplace_back (); | |
15659 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15660 | |
15661 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15662 | if (cu->language == language_cplus) |
be2daae6 TT |
15663 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15664 | die, cu); | |
3da10d80 KS |
15665 | else |
15666 | { | |
1d06ead6 | 15667 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15668 | fnp->physname = physname ? physname : ""; |
15669 | } | |
15670 | ||
c906108c | 15671 | fnp->type = alloc_type (objfile); |
f792889a | 15672 | this_type = read_type_die (die, cu); |
78134374 | 15673 | if (this_type && this_type->code () == TYPE_CODE_FUNC) |
c906108c | 15674 | { |
1f704f76 | 15675 | int nparams = this_type->num_fields (); |
c906108c | 15676 | |
f792889a | 15677 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15678 | of the method itself (TYPE_CODE_METHOD). */ |
15679 | smash_to_method_type (fnp->type, type, | |
f792889a | 15680 | TYPE_TARGET_TYPE (this_type), |
80fc5e77 | 15681 | this_type->fields (), |
1f704f76 | 15682 | this_type->num_fields (), |
a409645d | 15683 | this_type->has_varargs ()); |
c906108c SS |
15684 | |
15685 | /* Handle static member functions. | |
dda83cd7 SM |
15686 | Dwarf2 has no clean way to discern C++ static and non-static |
15687 | member functions. G++ helps GDB by marking the first | |
15688 | parameter for non-static member functions (which is the this | |
15689 | pointer) as artificial. We obtain this information from | |
15690 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15691 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15692 | fnp->voffset = VOFFSET_STATIC; |
15693 | } | |
15694 | else | |
b98664d3 | 15695 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15696 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15697 | |
15698 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15699 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15700 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15701 | |
3e43a32a MS |
15702 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15703 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15704 | |
15705 | /* Get accessibility. */ | |
bf23a268 | 15706 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
60d5a603 | 15707 | switch (accessibility) |
c906108c | 15708 | { |
60d5a603 JK |
15709 | case DW_ACCESS_private: |
15710 | fnp->is_private = 1; | |
15711 | break; | |
15712 | case DW_ACCESS_protected: | |
15713 | fnp->is_protected = 1; | |
15714 | break; | |
c906108c SS |
15715 | } |
15716 | ||
b02dede2 | 15717 | /* Check for artificial methods. */ |
e142c38c | 15718 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
c45bc3f8 | 15719 | if (attr && attr->as_boolean ()) |
b02dede2 DJ |
15720 | fnp->is_artificial = 1; |
15721 | ||
e35000a7 TBA |
15722 | /* Check for defaulted methods. */ |
15723 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
e8e5c158 TT |
15724 | if (attr != nullptr) |
15725 | fnp->defaulted = attr->defaulted (); | |
e35000a7 TBA |
15726 | |
15727 | /* Check for deleted methods. */ | |
15728 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
c45bc3f8 | 15729 | if (attr != nullptr && attr->as_boolean ()) |
e35000a7 TBA |
15730 | fnp->is_deleted = 1; |
15731 | ||
7d27a96d TT |
15732 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15733 | ||
0d564a31 | 15734 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15735 | function. For older versions of GCC, this is an offset in the |
15736 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15737 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15738 | to the object address. */ |
15739 | ||
e142c38c | 15740 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15741 | if (attr != nullptr) |
8e19ed76 | 15742 | { |
9d2246fc | 15743 | if (attr->form_is_block () && attr->as_block ()->size > 0) |
dda83cd7 | 15744 | { |
9d2246fc TT |
15745 | struct dwarf_block *block = attr->as_block (); |
15746 | ||
15747 | if (block->data[0] == DW_OP_constu) | |
aec5aa8b TT |
15748 | { |
15749 | /* Old-style GCC. */ | |
9d2246fc | 15750 | fnp->voffset = decode_locdesc (block, cu) + 2; |
aec5aa8b | 15751 | } |
9d2246fc TT |
15752 | else if (block->data[0] == DW_OP_deref |
15753 | || (block->size > 1 | |
15754 | && block->data[0] == DW_OP_deref_size | |
15755 | && block->data[1] == cu->header.addr_size)) | |
aec5aa8b | 15756 | { |
9d2246fc | 15757 | fnp->voffset = decode_locdesc (block, cu); |
aec5aa8b TT |
15758 | if ((fnp->voffset % cu->header.addr_size) != 0) |
15759 | dwarf2_complex_location_expr_complaint (); | |
15760 | else | |
15761 | fnp->voffset /= cu->header.addr_size; | |
15762 | fnp->voffset += 2; | |
15763 | } | |
15764 | else | |
15765 | dwarf2_complex_location_expr_complaint (); | |
15766 | ||
15767 | if (!fnp->fcontext) | |
7e993ebf KS |
15768 | { |
15769 | /* If there is no `this' field and no DW_AT_containing_type, | |
15770 | we cannot actually find a base class context for the | |
15771 | vtable! */ | |
1f704f76 | 15772 | if (this_type->num_fields () == 0 |
7e993ebf KS |
15773 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) |
15774 | { | |
b98664d3 | 15775 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15776 | "function \"%s\" (offset %s)"), |
15777 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15778 | } |
15779 | else | |
15780 | { | |
15781 | fnp->fcontext | |
940da03e | 15782 | = TYPE_TARGET_TYPE (this_type->field (0).type ()); |
7e993ebf KS |
15783 | } |
15784 | } | |
aec5aa8b | 15785 | } |
cd6c91b4 | 15786 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 15787 | { |
4d3c2250 | 15788 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 | 15789 | } |
8e19ed76 | 15790 | else |
dda83cd7 | 15791 | { |
4d3c2250 KB |
15792 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15793 | fieldname); | |
dda83cd7 | 15794 | } |
0d564a31 | 15795 | } |
d48cc9dd DJ |
15796 | else |
15797 | { | |
15798 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
23dca5c3 | 15799 | if (attr != nullptr && attr->as_virtuality () != DW_VIRTUALITY_none) |
d48cc9dd DJ |
15800 | { |
15801 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15802 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15803 | "but the vtable offset is not specified"), |
9d8780f0 | 15804 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15805 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15806 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15807 | } | |
15808 | } | |
c906108c SS |
15809 | } |
15810 | ||
15811 | /* Create the vector of member function fields, and attach it to the type. */ | |
15812 | ||
15813 | static void | |
fba45db2 | 15814 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15815 | struct dwarf2_cu *cu) |
c906108c | 15816 | { |
b4ba55a1 | 15817 | if (cu->language == language_ada) |
a73c6dcd | 15818 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15819 | |
c906108c SS |
15820 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15821 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15822 | TYPE_ALLOC (type, |
15823 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15824 | |
be2daae6 | 15825 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15826 | { |
be2daae6 | 15827 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15828 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15829 | |
be2daae6 TT |
15830 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15831 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15832 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15833 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15834 | ||
15835 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15836 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15837 | } |
15838 | ||
be2daae6 | 15839 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15840 | } |
15841 | ||
1168df01 JB |
15842 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15843 | language, zero otherwise. */ | |
15844 | static int | |
15845 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15846 | { | |
15847 | static const char vptr[] = "_vptr"; | |
15848 | ||
9c37b5ae TT |
15849 | /* Look for the C++ form of the vtable. */ |
15850 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15851 | return 1; |
15852 | ||
15853 | return 0; | |
15854 | } | |
15855 | ||
c0dd20ea | 15856 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15857 | functions, with the ABI-specified layout. If TYPE describes |
15858 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15859 | |
15860 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15861 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15862 | |
0b92b5bb TT |
15863 | static void |
15864 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15865 | { |
09e2d7c7 | 15866 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15867 | |
15868 | /* Check for a structure with no name and two children. */ | |
1f704f76 | 15869 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) |
0b92b5bb | 15870 | return; |
c0dd20ea DJ |
15871 | |
15872 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15873 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15874 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15875 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15876 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15877 | return; | |
c0dd20ea DJ |
15878 | |
15879 | /* Find the type of the method. */ | |
940da03e | 15880 | pfn_type = type->field (0).type (); |
c0dd20ea | 15881 | if (pfn_type == NULL |
78134374 SM |
15882 | || pfn_type->code () != TYPE_CODE_PTR |
15883 | || TYPE_TARGET_TYPE (pfn_type)->code () != TYPE_CODE_FUNC) | |
0b92b5bb | 15884 | return; |
c0dd20ea DJ |
15885 | |
15886 | /* Look for the "this" argument. */ | |
15887 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
1f704f76 | 15888 | if (pfn_type->num_fields () == 0 |
940da03e SM |
15889 | /* || pfn_type->field (0).type () == NULL */ |
15890 | || pfn_type->field (0).type ()->code () != TYPE_CODE_PTR) | |
0b92b5bb | 15891 | return; |
c0dd20ea | 15892 | |
940da03e | 15893 | self_type = TYPE_TARGET_TYPE (pfn_type->field (0).type ()); |
0b92b5bb | 15894 | new_type = alloc_type (objfile); |
09e2d7c7 | 15895 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
80fc5e77 | 15896 | pfn_type->fields (), pfn_type->num_fields (), |
a409645d | 15897 | pfn_type->has_varargs ()); |
0b92b5bb | 15898 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15899 | } |
1168df01 | 15900 | |
57567375 TT |
15901 | /* While some versions of GCC will generate complicated DWARF for an |
15902 | array (see quirk_ada_thick_pointer), more recent versions were | |
15903 | modified to emit an explicit thick pointer structure. However, in | |
15904 | this case, the array still has DWARF expressions for its ranges, | |
15905 | and these must be ignored. */ | |
15906 | ||
15907 | static void | |
15908 | quirk_ada_thick_pointer_struct (struct die_info *die, struct dwarf2_cu *cu, | |
15909 | struct type *type) | |
15910 | { | |
15911 | gdb_assert (cu->language == language_ada); | |
15912 | ||
15913 | /* Check for a structure with two children. */ | |
15914 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) | |
15915 | return; | |
15916 | ||
15917 | /* Check for P_ARRAY and P_BOUNDS members. */ | |
15918 | if (TYPE_FIELD_NAME (type, 0) == NULL | |
15919 | || strcmp (TYPE_FIELD_NAME (type, 0), "P_ARRAY") != 0 | |
15920 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15921 | || strcmp (TYPE_FIELD_NAME (type, 1), "P_BOUNDS") != 0) | |
15922 | return; | |
15923 | ||
15924 | /* Make sure we're looking at a pointer to an array. */ | |
15925 | if (type->field (0).type ()->code () != TYPE_CODE_PTR) | |
15926 | return; | |
15927 | struct type *ary_type = TYPE_TARGET_TYPE (type->field (0).type ()); | |
15928 | ||
15929 | while (ary_type->code () == TYPE_CODE_ARRAY) | |
15930 | { | |
15931 | /* The Ada code already knows how to handle these types, so all | |
15932 | that we need to do is turn the bounds into static bounds. */ | |
15933 | struct type *index_type = ary_type->index_type (); | |
15934 | ||
15935 | index_type->bounds ()->low.set_const_val (1); | |
15936 | index_type->bounds ()->high.set_const_val (0); | |
15937 | ||
15938 | /* Handle multi-dimensional arrays. */ | |
15939 | ary_type = TYPE_TARGET_TYPE (ary_type); | |
15940 | } | |
15941 | } | |
15942 | ||
2b4424c3 TT |
15943 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15944 | appropriate error checking and issuing complaints if there is a | |
15945 | problem. */ | |
15946 | ||
15947 | static ULONGEST | |
15948 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15949 | { | |
15950 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15951 | ||
15952 | if (attr == nullptr) | |
15953 | return 0; | |
15954 | ||
cd6c91b4 | 15955 | if (!attr->form_is_constant ()) |
2b4424c3 | 15956 | { |
b98664d3 | 15957 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15958 | " - DIE at %s [in module %s]"), |
15959 | sect_offset_str (die->sect_off), | |
5e22e966 | 15960 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15961 | return 0; |
15962 | } | |
15963 | ||
529908cb TT |
15964 | LONGEST val = attr->constant_value (0); |
15965 | if (val < 0) | |
2b4424c3 | 15966 | { |
529908cb TT |
15967 | complaint (_("DW_AT_alignment value must not be negative" |
15968 | " - DIE at %s [in module %s]"), | |
15969 | sect_offset_str (die->sect_off), | |
15970 | objfile_name (cu->per_objfile->objfile)); | |
15971 | return 0; | |
2b4424c3 | 15972 | } |
529908cb | 15973 | ULONGEST align = val; |
2b4424c3 TT |
15974 | |
15975 | if (align == 0) | |
15976 | { | |
b98664d3 | 15977 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15978 | " - DIE at %s [in module %s]"), |
15979 | sect_offset_str (die->sect_off), | |
5e22e966 | 15980 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15981 | return 0; |
15982 | } | |
15983 | if ((align & (align - 1)) != 0) | |
15984 | { | |
b98664d3 | 15985 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15986 | " - DIE at %s [in module %s]"), |
15987 | sect_offset_str (die->sect_off), | |
5e22e966 | 15988 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15989 | return 0; |
15990 | } | |
15991 | ||
15992 | return align; | |
15993 | } | |
15994 | ||
15995 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15996 | the alignment for TYPE. */ | |
15997 | ||
15998 | static void | |
15999 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
16000 | struct type *type) | |
16001 | { | |
16002 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 16003 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
16004 | " - DIE at %s [in module %s]"), |
16005 | sect_offset_str (die->sect_off), | |
5e22e966 | 16006 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 16007 | } |
685b1105 | 16008 | |
e35000a7 TBA |
16009 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
16010 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
16011 | ||
16012 | static bool | |
16013 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
16014 | { | |
16015 | switch (value) | |
16016 | { | |
16017 | case DW_CC_normal: | |
16018 | case DW_CC_pass_by_reference: | |
16019 | case DW_CC_pass_by_value: | |
16020 | return true; | |
16021 | ||
16022 | default: | |
16023 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 16024 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
16025 | return false; |
16026 | } | |
16027 | } | |
16028 | ||
d0922fcf TBA |
16029 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
16030 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
16031 | also according to GNU-specific values (see include/dwarf2.h). */ | |
16032 | ||
16033 | static bool | |
16034 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
16035 | { | |
16036 | switch (value) | |
16037 | { | |
16038 | case DW_CC_normal: | |
16039 | case DW_CC_program: | |
16040 | case DW_CC_nocall: | |
16041 | return true; | |
16042 | ||
16043 | case DW_CC_GNU_renesas_sh: | |
16044 | case DW_CC_GNU_borland_fastcall_i386: | |
16045 | case DW_CC_GDB_IBM_OpenCL: | |
16046 | return true; | |
16047 | ||
16048 | default: | |
16049 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 16050 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
16051 | return false; |
16052 | } | |
16053 | } | |
16054 | ||
c906108c | 16055 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
16056 | (definition) to create a type for the structure or union. Fill in |
16057 | the type's name and general properties; the members will not be | |
83655187 DE |
16058 | processed until process_structure_scope. A symbol table entry for |
16059 | the type will also not be done until process_structure_scope (assuming | |
16060 | the type has a name). | |
c906108c | 16061 | |
c767944b DJ |
16062 | NOTE: we need to call these functions regardless of whether or not the |
16063 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 16064 | structure or union. This gets the type entered into our set of |
83655187 | 16065 | user defined types. */ |
c906108c | 16066 | |
f792889a | 16067 | static struct type * |
134d01f1 | 16068 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16069 | { |
5e22e966 | 16070 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
16071 | struct type *type; |
16072 | struct attribute *attr; | |
15d034d0 | 16073 | const char *name; |
c906108c | 16074 | |
348e048f DE |
16075 | /* If the definition of this type lives in .debug_types, read that type. |
16076 | Don't follow DW_AT_specification though, that will take us back up | |
16077 | the chain and we want to go down. */ | |
052c8bb8 | 16078 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16079 | if (attr != nullptr) |
348e048f | 16080 | { |
ac9ec31b | 16081 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16082 | |
ac9ec31b | 16083 | /* The type's CU may not be the same as CU. |
02142a6c | 16084 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16085 | return set_die_type (die, type, cu); |
16086 | } | |
16087 | ||
c0dd20ea | 16088 | type = alloc_type (objfile); |
c906108c | 16089 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 16090 | |
39cbfefa DJ |
16091 | name = dwarf2_name (die, cu); |
16092 | if (name != NULL) | |
c906108c | 16093 | { |
987504bb | 16094 | if (cu->language == language_cplus |
c44af4eb TT |
16095 | || cu->language == language_d |
16096 | || cu->language == language_rust) | |
63d06c5c | 16097 | { |
15d034d0 | 16098 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
16099 | |
16100 | /* dwarf2_full_name might have already finished building the DIE's | |
16101 | type. If so, there is no need to continue. */ | |
16102 | if (get_die_type (die, cu) != NULL) | |
16103 | return get_die_type (die, cu); | |
16104 | ||
d0e39ea2 | 16105 | type->set_name (full_name); |
63d06c5c DC |
16106 | } |
16107 | else | |
16108 | { | |
d8151005 DJ |
16109 | /* The name is already allocated along with this objfile, so |
16110 | we don't need to duplicate it for the type. */ | |
d0e39ea2 | 16111 | type->set_name (name); |
63d06c5c | 16112 | } |
c906108c SS |
16113 | } |
16114 | ||
16115 | if (die->tag == DW_TAG_structure_type) | |
16116 | { | |
67607e24 | 16117 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
16118 | } |
16119 | else if (die->tag == DW_TAG_union_type) | |
16120 | { | |
67607e24 | 16121 | type->set_code (TYPE_CODE_UNION); |
c906108c SS |
16122 | } |
16123 | else | |
16124 | { | |
67607e24 | 16125 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
16126 | } |
16127 | ||
0cc2414c TT |
16128 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
16129 | TYPE_DECLARED_CLASS (type) = 1; | |
16130 | ||
e35000a7 TBA |
16131 | /* Store the calling convention in the type if it's available in |
16132 | the die. Otherwise the calling convention remains set to | |
16133 | the default value DW_CC_normal. */ | |
16134 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
16135 | if (attr != nullptr | |
529908cb | 16136 | && is_valid_DW_AT_calling_convention_for_type (attr->constant_value (0))) |
e35000a7 TBA |
16137 | { |
16138 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16139 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
529908cb | 16140 | = (enum dwarf_calling_convention) (attr->constant_value (0)); |
e35000a7 TBA |
16141 | } |
16142 | ||
e142c38c | 16143 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16144 | if (attr != nullptr) |
c906108c | 16145 | { |
cd6c91b4 | 16146 | if (attr->form_is_constant ()) |
dda83cd7 | 16147 | TYPE_LENGTH (type) = attr->constant_value (0); |
155bfbd3 JB |
16148 | else |
16149 | { | |
f8e89861 | 16150 | struct dynamic_prop prop; |
293e7e51 | 16151 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 16152 | type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); |
dda83cd7 | 16153 | TYPE_LENGTH (type) = 0; |
155bfbd3 | 16154 | } |
c906108c SS |
16155 | } |
16156 | else | |
16157 | { | |
16158 | TYPE_LENGTH (type) = 0; | |
16159 | } | |
16160 | ||
2b4424c3 TT |
16161 | maybe_set_alignment (cu, die, type); |
16162 | ||
5230b05a | 16163 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 16164 | { |
5230b05a WT |
16165 | /* ICC<14 does not output the required DW_AT_declaration on |
16166 | incomplete types, but gives them a size of zero. */ | |
b4b73759 | 16167 | type->set_is_stub (true); |
685b1105 JK |
16168 | } |
16169 | else | |
9baccff6 | 16170 | type->set_stub_is_supported (true); |
685b1105 | 16171 | |
dc718098 | 16172 | if (die_is_declaration (die, cu)) |
b4b73759 | 16173 | type->set_is_stub (true); |
a6c727b2 DJ |
16174 | else if (attr == NULL && die->child == NULL |
16175 | && producer_is_realview (cu->producer)) | |
16176 | /* RealView does not output the required DW_AT_declaration | |
16177 | on incomplete types. */ | |
b4b73759 | 16178 | type->set_is_stub (true); |
dc718098 | 16179 | |
c906108c SS |
16180 | /* We need to add the type field to the die immediately so we don't |
16181 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 16182 | type within the structure itself. */ |
1c379e20 | 16183 | set_die_type (die, type, cu); |
c906108c | 16184 | |
7e314c57 JK |
16185 | /* set_die_type should be already done. */ |
16186 | set_descriptive_type (type, die, cu); | |
16187 | ||
c767944b DJ |
16188 | return type; |
16189 | } | |
16190 | ||
9c6a1327 TT |
16191 | static void handle_struct_member_die |
16192 | (struct die_info *child_die, | |
16193 | struct type *type, | |
16194 | struct field_info *fi, | |
16195 | std::vector<struct symbol *> *template_args, | |
16196 | struct dwarf2_cu *cu); | |
16197 | ||
16198 | /* A helper for handle_struct_member_die that handles | |
16199 | DW_TAG_variant_part. */ | |
16200 | ||
16201 | static void | |
16202 | handle_variant_part (struct die_info *die, struct type *type, | |
16203 | struct field_info *fi, | |
16204 | std::vector<struct symbol *> *template_args, | |
16205 | struct dwarf2_cu *cu) | |
16206 | { | |
16207 | variant_part_builder *new_part; | |
16208 | if (fi->current_variant_part == nullptr) | |
16209 | { | |
16210 | fi->variant_parts.emplace_back (); | |
16211 | new_part = &fi->variant_parts.back (); | |
16212 | } | |
16213 | else if (!fi->current_variant_part->processing_variant) | |
16214 | { | |
16215 | complaint (_("nested DW_TAG_variant_part seen " | |
16216 | "- DIE at %s [in module %s]"), | |
16217 | sect_offset_str (die->sect_off), | |
5e22e966 | 16218 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16219 | return; |
16220 | } | |
16221 | else | |
16222 | { | |
16223 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
16224 | current.variant_parts.emplace_back (); | |
16225 | new_part = ¤t.variant_parts.back (); | |
16226 | } | |
16227 | ||
16228 | /* When we recurse, we want callees to add to this new variant | |
16229 | part. */ | |
16230 | scoped_restore save_current_variant_part | |
16231 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
16232 | ||
16233 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
16234 | if (discr == NULL) | |
16235 | { | |
16236 | /* It's a univariant form, an extension we support. */ | |
16237 | } | |
16238 | else if (discr->form_is_ref ()) | |
16239 | { | |
16240 | struct dwarf2_cu *target_cu = cu; | |
16241 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16242 | ||
16243 | new_part->discriminant_offset = target_die->sect_off; | |
16244 | } | |
16245 | else | |
16246 | { | |
16247 | complaint (_("DW_AT_discr does not have DIE reference form" | |
16248 | " - DIE at %s [in module %s]"), | |
16249 | sect_offset_str (die->sect_off), | |
5e22e966 | 16250 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16251 | } |
16252 | ||
16253 | for (die_info *child_die = die->child; | |
16254 | child_die != NULL; | |
16255 | child_die = child_die->sibling) | |
16256 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
16257 | } | |
16258 | ||
16259 | /* A helper for handle_struct_member_die that handles | |
16260 | DW_TAG_variant. */ | |
16261 | ||
16262 | static void | |
16263 | handle_variant (struct die_info *die, struct type *type, | |
16264 | struct field_info *fi, | |
16265 | std::vector<struct symbol *> *template_args, | |
16266 | struct dwarf2_cu *cu) | |
16267 | { | |
16268 | if (fi->current_variant_part == nullptr) | |
16269 | { | |
16270 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
16271 | "- DIE at %s [in module %s]"), | |
16272 | sect_offset_str (die->sect_off), | |
5e22e966 | 16273 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16274 | return; |
16275 | } | |
16276 | if (fi->current_variant_part->processing_variant) | |
16277 | { | |
16278 | complaint (_("nested DW_TAG_variant seen " | |
16279 | "- DIE at %s [in module %s]"), | |
16280 | sect_offset_str (die->sect_off), | |
5e22e966 | 16281 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16282 | return; |
16283 | } | |
16284 | ||
16285 | scoped_restore save_processing_variant | |
16286 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
16287 | true); | |
16288 | ||
16289 | fi->current_variant_part->variants.emplace_back (); | |
16290 | variant_field &variant = fi->current_variant_part->variants.back (); | |
16291 | variant.first_field = fi->fields.size (); | |
16292 | ||
16293 | /* In a variant we want to get the discriminant and also add a | |
16294 | field for our sole member child. */ | |
16295 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
cae21f8e | 16296 | if (discr == nullptr || !discr->form_is_constant ()) |
9c6a1327 TT |
16297 | { |
16298 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
9d2246fc | 16299 | if (discr == nullptr || discr->as_block ()->size == 0) |
9c6a1327 TT |
16300 | variant.default_branch = true; |
16301 | else | |
9d2246fc | 16302 | variant.discr_list_data = discr->as_block (); |
9c6a1327 TT |
16303 | } |
16304 | else | |
cae21f8e | 16305 | variant.discriminant_value = discr->constant_value (0); |
9c6a1327 TT |
16306 | |
16307 | for (die_info *variant_child = die->child; | |
16308 | variant_child != NULL; | |
16309 | variant_child = variant_child->sibling) | |
16310 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
16311 | ||
16312 | variant.last_field = fi->fields.size (); | |
16313 | } | |
16314 | ||
2ddeaf8a TT |
16315 | /* A helper for process_structure_scope that handles a single member |
16316 | DIE. */ | |
16317 | ||
16318 | static void | |
16319 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
16320 | struct field_info *fi, | |
16321 | std::vector<struct symbol *> *template_args, | |
16322 | struct dwarf2_cu *cu) | |
16323 | { | |
16324 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 16325 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
16326 | { |
16327 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
16328 | should be a DW_TAG_member that is a declaration, but | |
16329 | all versions of G++ as of this writing (so through at | |
16330 | least 3.2.1) incorrectly generate DW_TAG_variable | |
16331 | tags for them instead. */ | |
16332 | dwarf2_add_field (fi, child_die, cu); | |
16333 | } | |
16334 | else if (child_die->tag == DW_TAG_subprogram) | |
16335 | { | |
16336 | /* Rust doesn't have member functions in the C++ sense. | |
16337 | However, it does emit ordinary functions as children | |
16338 | of a struct DIE. */ | |
16339 | if (cu->language == language_rust) | |
16340 | read_func_scope (child_die, cu); | |
16341 | else | |
16342 | { | |
16343 | /* C++ member function. */ | |
16344 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
16345 | } | |
16346 | } | |
16347 | else if (child_die->tag == DW_TAG_inheritance) | |
16348 | { | |
16349 | /* C++ base class field. */ | |
16350 | dwarf2_add_field (fi, child_die, cu); | |
16351 | } | |
16352 | else if (type_can_define_types (child_die)) | |
16353 | dwarf2_add_type_defn (fi, child_die, cu); | |
16354 | else if (child_die->tag == DW_TAG_template_type_param | |
16355 | || child_die->tag == DW_TAG_template_value_param) | |
16356 | { | |
16357 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
16358 | ||
16359 | if (arg != NULL) | |
16360 | template_args->push_back (arg); | |
16361 | } | |
9c6a1327 TT |
16362 | else if (child_die->tag == DW_TAG_variant_part) |
16363 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 16364 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 16365 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
16366 | } |
16367 | ||
c767944b DJ |
16368 | /* Finish creating a structure or union type, including filling in |
16369 | its members and creating a symbol for it. */ | |
16370 | ||
16371 | static void | |
16372 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16373 | { | |
5e22e966 | 16374 | struct objfile *objfile = cu->per_objfile->objfile; |
ca040673 | 16375 | struct die_info *child_die; |
c767944b DJ |
16376 | struct type *type; |
16377 | ||
16378 | type = get_die_type (die, cu); | |
16379 | if (type == NULL) | |
16380 | type = read_structure_type (die, cu); | |
16381 | ||
3e1d3d8c | 16382 | bool has_template_parameters = false; |
e142c38c | 16383 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16384 | { |
16385 | struct field_info fi; | |
2f4732b0 | 16386 | std::vector<struct symbol *> template_args; |
c906108c | 16387 | |
639d11d3 | 16388 | child_die = die->child; |
c906108c SS |
16389 | |
16390 | while (child_die && child_die->tag) | |
16391 | { | |
2ddeaf8a | 16392 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 16393 | child_die = child_die->sibling; |
c906108c SS |
16394 | } |
16395 | ||
34eaf542 | 16396 | /* Attach template arguments to type. */ |
2f4732b0 | 16397 | if (!template_args.empty ()) |
34eaf542 | 16398 | { |
3e1d3d8c | 16399 | has_template_parameters = true; |
34eaf542 | 16400 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16401 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16402 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16403 | = XOBNEWVEC (&objfile->objfile_obstack, |
16404 | struct symbol *, | |
16405 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16406 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16407 | template_args.data (), |
34eaf542 TT |
16408 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16409 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16410 | } |
16411 | ||
c906108c | 16412 | /* Attach fields and member functions to the type. */ |
317f7127 | 16413 | if (fi.nfields () > 0) |
e7c27a73 | 16414 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16415 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16416 | { |
e7c27a73 | 16417 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16418 | |
c5aa993b | 16419 | /* Get the type which refers to the base class (possibly this |
c906108c | 16420 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16421 | class from the DW_AT_containing_type attribute. This use of |
16422 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16423 | |
e142c38c | 16424 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16425 | { |
e7c27a73 | 16426 | struct type *t = die_containing_type (die, cu); |
c906108c | 16427 | |
ae6ae975 | 16428 | set_type_vptr_basetype (type, t); |
c906108c SS |
16429 | if (type == t) |
16430 | { | |
c906108c SS |
16431 | int i; |
16432 | ||
16433 | /* Our own class provides vtbl ptr. */ | |
1f704f76 | 16434 | for (i = t->num_fields () - 1; |
c906108c SS |
16435 | i >= TYPE_N_BASECLASSES (t); |
16436 | --i) | |
16437 | { | |
0d5cff50 | 16438 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16439 | |
dda83cd7 | 16440 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16441 | { |
ae6ae975 | 16442 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16443 | break; |
16444 | } | |
16445 | } | |
16446 | ||
16447 | /* Complain if virtual function table field not found. */ | |
16448 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16449 | complaint (_("virtual function table pointer " |
3e43a32a | 16450 | "not found when defining class '%s'"), |
7d93a1e0 | 16451 | type->name () ? type->name () : ""); |
c906108c SS |
16452 | } |
16453 | else | |
16454 | { | |
ae6ae975 | 16455 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16456 | } |
16457 | } | |
f6235d4c | 16458 | else if (cu->producer |
61012eef | 16459 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16460 | { |
16461 | /* The IBM XLC compiler does not provide direct indication | |
dda83cd7 SM |
16462 | of the containing type, but the vtable pointer is |
16463 | always named __vfp. */ | |
f6235d4c EZ |
16464 | |
16465 | int i; | |
16466 | ||
1f704f76 | 16467 | for (i = type->num_fields () - 1; |
f6235d4c EZ |
16468 | i >= TYPE_N_BASECLASSES (type); |
16469 | --i) | |
16470 | { | |
16471 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16472 | { | |
ae6ae975 DE |
16473 | set_type_vptr_fieldno (type, i); |
16474 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16475 | break; |
16476 | } | |
16477 | } | |
16478 | } | |
c906108c | 16479 | } |
98751a41 JK |
16480 | |
16481 | /* Copy fi.typedef_field_list linked list elements content into the | |
16482 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16483 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16484 | { |
be2daae6 | 16485 | int count = fi.typedef_field_list.size (); |
98751a41 | 16486 | |
a0d7a4ff | 16487 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16488 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16489 | = ((struct decl_field *) |
be2daae6 TT |
16490 | TYPE_ALLOC (type, |
16491 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16492 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16493 | |
be2daae6 TT |
16494 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16495 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16496 | } |
c767944b | 16497 | |
883fd55a KS |
16498 | /* Copy fi.nested_types_list linked list elements content into the |
16499 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16500 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16501 | { |
be2daae6 | 16502 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16503 | |
16504 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16505 | TYPE_NESTED_TYPES_ARRAY (type) | |
16506 | = ((struct decl_field *) | |
be2daae6 TT |
16507 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16508 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16509 | |
be2daae6 TT |
16510 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16511 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16512 | } |
c906108c | 16513 | } |
63d06c5c | 16514 | |
bb5ed363 | 16515 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16516 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16517 | cu->rust_unions.push_back (type); | |
57567375 TT |
16518 | else if (cu->language == language_ada) |
16519 | quirk_ada_thick_pointer_struct (die, cu, type); | |
0b92b5bb | 16520 | |
90aeadfc DC |
16521 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16522 | snapshots) has been known to create a die giving a declaration | |
16523 | for a class that has, as a child, a die giving a definition for a | |
16524 | nested class. So we have to process our children even if the | |
16525 | current die is a declaration. Normally, of course, a declaration | |
16526 | won't have any children at all. */ | |
134d01f1 | 16527 | |
ca040673 DE |
16528 | child_die = die->child; |
16529 | ||
90aeadfc DC |
16530 | while (child_die != NULL && child_die->tag) |
16531 | { | |
16532 | if (child_die->tag == DW_TAG_member | |
16533 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16534 | || child_die->tag == DW_TAG_inheritance |
16535 | || child_die->tag == DW_TAG_template_value_param | |
16536 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16537 | { |
90aeadfc | 16538 | /* Do nothing. */ |
134d01f1 | 16539 | } |
90aeadfc DC |
16540 | else |
16541 | process_die (child_die, cu); | |
134d01f1 | 16542 | |
436c571c | 16543 | child_die = child_die->sibling; |
134d01f1 DJ |
16544 | } |
16545 | ||
fa4028e9 JB |
16546 | /* Do not consider external references. According to the DWARF standard, |
16547 | these DIEs are identified by the fact that they have no byte_size | |
16548 | attribute, and a declaration attribute. */ | |
16549 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15cd93d0 TV |
16550 | || !die_is_declaration (die, cu) |
16551 | || dwarf2_attr (die, DW_AT_signature, cu) != NULL) | |
3e1d3d8c TT |
16552 | { |
16553 | struct symbol *sym = new_symbol (die, type, cu); | |
16554 | ||
16555 | if (has_template_parameters) | |
16556 | { | |
a776957c TT |
16557 | struct symtab *symtab; |
16558 | if (sym != nullptr) | |
16559 | symtab = symbol_symtab (sym); | |
16560 | else if (cu->line_header != nullptr) | |
16561 | { | |
16562 | /* Any related symtab will do. */ | |
16563 | symtab | |
7ba99d21 | 16564 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
16565 | } |
16566 | else | |
16567 | { | |
16568 | symtab = nullptr; | |
16569 | complaint (_("could not find suitable " | |
16570 | "symtab for template parameter" | |
16571 | " - DIE at %s [in module %s]"), | |
16572 | sect_offset_str (die->sect_off), | |
16573 | objfile_name (objfile)); | |
16574 | } | |
16575 | ||
16576 | if (symtab != nullptr) | |
16577 | { | |
16578 | /* Make sure that the symtab is set on the new symbols. | |
16579 | Even though they don't appear in this symtab directly, | |
16580 | other parts of gdb assume that symbols do, and this is | |
16581 | reasonably true. */ | |
16582 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16583 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16584 | } | |
3e1d3d8c TT |
16585 | } |
16586 | } | |
134d01f1 DJ |
16587 | } |
16588 | ||
ed6acedd TT |
16589 | /* Assuming DIE is an enumeration type, and TYPE is its associated |
16590 | type, update TYPE using some information only available in DIE's | |
16591 | children. In particular, the fields are computed. */ | |
55426c9d JB |
16592 | |
16593 | static void | |
16594 | update_enumeration_type_from_children (struct die_info *die, | |
16595 | struct type *type, | |
16596 | struct dwarf2_cu *cu) | |
16597 | { | |
60f7655a | 16598 | struct die_info *child_die; |
55426c9d JB |
16599 | int unsigned_enum = 1; |
16600 | int flag_enum = 1; | |
55426c9d | 16601 | |
8268c778 | 16602 | auto_obstack obstack; |
ed6acedd | 16603 | std::vector<struct field> fields; |
55426c9d | 16604 | |
60f7655a DE |
16605 | for (child_die = die->child; |
16606 | child_die != NULL && child_die->tag; | |
436c571c | 16607 | child_die = child_die->sibling) |
55426c9d JB |
16608 | { |
16609 | struct attribute *attr; | |
16610 | LONGEST value; | |
16611 | const gdb_byte *bytes; | |
16612 | struct dwarf2_locexpr_baton *baton; | |
16613 | const char *name; | |
60f7655a | 16614 | |
55426c9d JB |
16615 | if (child_die->tag != DW_TAG_enumerator) |
16616 | continue; | |
16617 | ||
16618 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16619 | if (attr == NULL) | |
16620 | continue; | |
16621 | ||
16622 | name = dwarf2_name (child_die, cu); | |
16623 | if (name == NULL) | |
16624 | name = "<anonymous enumerator>"; | |
16625 | ||
16626 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16627 | &value, &bytes, &baton); | |
16628 | if (value < 0) | |
16629 | { | |
16630 | unsigned_enum = 0; | |
16631 | flag_enum = 0; | |
16632 | } | |
55426c9d | 16633 | else |
edd45eb0 SM |
16634 | { |
16635 | if (count_one_bits_ll (value) >= 2) | |
16636 | flag_enum = 0; | |
edd45eb0 | 16637 | } |
55426c9d | 16638 | |
ed6acedd TT |
16639 | fields.emplace_back (); |
16640 | struct field &field = fields.back (); | |
16641 | FIELD_NAME (field) = dwarf2_physname (name, child_die, cu); | |
16642 | SET_FIELD_ENUMVAL (field, value); | |
16643 | } | |
16644 | ||
16645 | if (!fields.empty ()) | |
16646 | { | |
5e33d5f4 | 16647 | type->set_num_fields (fields.size ()); |
3cabb6b0 SM |
16648 | type->set_fields |
16649 | ((struct field *) | |
16650 | TYPE_ALLOC (type, sizeof (struct field) * fields.size ())); | |
80fc5e77 | 16651 | memcpy (type->fields (), fields.data (), |
ed6acedd | 16652 | sizeof (struct field) * fields.size ()); |
55426c9d JB |
16653 | } |
16654 | ||
16655 | if (unsigned_enum) | |
653223d3 SM |
16656 | type->set_is_unsigned (true); |
16657 | ||
55426c9d JB |
16658 | if (flag_enum) |
16659 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16660 | } |
16661 | ||
134d01f1 DJ |
16662 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16663 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16664 | |
f792889a | 16665 | static struct type * |
134d01f1 | 16666 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16667 | { |
5e22e966 | 16668 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16669 | struct type *type; |
c906108c | 16670 | struct attribute *attr; |
0114d602 | 16671 | const char *name; |
134d01f1 | 16672 | |
348e048f DE |
16673 | /* If the definition of this type lives in .debug_types, read that type. |
16674 | Don't follow DW_AT_specification though, that will take us back up | |
16675 | the chain and we want to go down. */ | |
052c8bb8 | 16676 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16677 | if (attr != nullptr) |
348e048f | 16678 | { |
ac9ec31b | 16679 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16680 | |
ac9ec31b | 16681 | /* The type's CU may not be the same as CU. |
02142a6c | 16682 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16683 | return set_die_type (die, type, cu); |
16684 | } | |
16685 | ||
c906108c SS |
16686 | type = alloc_type (objfile); |
16687 | ||
67607e24 | 16688 | type->set_code (TYPE_CODE_ENUM); |
94af9270 | 16689 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16690 | if (name != NULL) |
d0e39ea2 | 16691 | type->set_name (name); |
c906108c | 16692 | |
0626fc76 TT |
16693 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16694 | if (attr != NULL) | |
16695 | { | |
16696 | struct type *underlying_type = die_type (die, cu); | |
16697 | ||
16698 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16699 | } | |
16700 | ||
e142c38c | 16701 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16702 | if (attr != nullptr) |
c906108c | 16703 | { |
529908cb | 16704 | TYPE_LENGTH (type) = attr->constant_value (0); |
c906108c SS |
16705 | } |
16706 | else | |
16707 | { | |
16708 | TYPE_LENGTH (type) = 0; | |
16709 | } | |
16710 | ||
2b4424c3 TT |
16711 | maybe_set_alignment (cu, die, type); |
16712 | ||
137033e9 JB |
16713 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16714 | declared as private in the package spec, and then defined only | |
16715 | inside the package body. Such types are known as Taft Amendment | |
16716 | Types. When another package uses such a type, an incomplete DIE | |
16717 | may be generated by the compiler. */ | |
02eb380e | 16718 | if (die_is_declaration (die, cu)) |
b4b73759 | 16719 | type->set_is_stub (true); |
02eb380e | 16720 | |
0626fc76 TT |
16721 | /* If this type has an underlying type that is not a stub, then we |
16722 | may use its attributes. We always use the "unsigned" attribute | |
16723 | in this situation, because ordinarily we guess whether the type | |
16724 | is unsigned -- but the guess can be wrong and the underlying type | |
16725 | can tell us the reality. However, we defer to a local size | |
16726 | attribute if one exists, because this lets the compiler override | |
16727 | the underlying type if needed. */ | |
e46d3488 | 16728 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_TARGET_TYPE (type)->is_stub ()) |
0626fc76 | 16729 | { |
9e7c9a03 HD |
16730 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
16731 | underlying_type = check_typedef (underlying_type); | |
653223d3 SM |
16732 | |
16733 | type->set_is_unsigned (underlying_type->is_unsigned ()); | |
16734 | ||
0626fc76 | 16735 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 16736 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
653223d3 | 16737 | |
2b4424c3 | 16738 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
16739 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
16740 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
16741 | } |
16742 | ||
3d567982 TT |
16743 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16744 | ||
ed6acedd TT |
16745 | set_die_type (die, type, cu); |
16746 | ||
16747 | /* Finish the creation of this type by using the enum's children. | |
16748 | Note that, as usual, this must come after set_die_type to avoid | |
16749 | infinite recursion when trying to compute the names of the | |
16750 | enumerators. */ | |
16751 | update_enumeration_type_from_children (die, type, cu); | |
16752 | ||
16753 | return type; | |
134d01f1 DJ |
16754 | } |
16755 | ||
16756 | /* Given a pointer to a die which begins an enumeration, process all | |
16757 | the dies that define the members of the enumeration, and create the | |
16758 | symbol for the enumeration type. | |
16759 | ||
16760 | NOTE: We reverse the order of the element list. */ | |
16761 | ||
16762 | static void | |
16763 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16764 | { | |
f792889a | 16765 | struct type *this_type; |
134d01f1 | 16766 | |
f792889a DJ |
16767 | this_type = get_die_type (die, cu); |
16768 | if (this_type == NULL) | |
16769 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16770 | |
639d11d3 | 16771 | if (die->child != NULL) |
c906108c | 16772 | { |
9dc481d3 | 16773 | struct die_info *child_die; |
15d034d0 | 16774 | const char *name; |
9dc481d3 | 16775 | |
639d11d3 | 16776 | child_die = die->child; |
c906108c SS |
16777 | while (child_die && child_die->tag) |
16778 | { | |
16779 | if (child_die->tag != DW_TAG_enumerator) | |
16780 | { | |
e7c27a73 | 16781 | process_die (child_die, cu); |
c906108c SS |
16782 | } |
16783 | else | |
16784 | { | |
39cbfefa DJ |
16785 | name = dwarf2_name (child_die, cu); |
16786 | if (name) | |
ed6acedd | 16787 | new_symbol (child_die, this_type, cu); |
c906108c SS |
16788 | } |
16789 | ||
436c571c | 16790 | child_die = child_die->sibling; |
c906108c | 16791 | } |
c906108c | 16792 | } |
134d01f1 | 16793 | |
6c83ed52 TT |
16794 | /* If we are reading an enum from a .debug_types unit, and the enum |
16795 | is a declaration, and the enum is not the signatured type in the | |
16796 | unit, then we do not want to add a symbol for it. Adding a | |
16797 | symbol would in some cases obscure the true definition of the | |
16798 | enum, giving users an incomplete type when the definition is | |
16799 | actually available. Note that we do not want to do this for all | |
16800 | enums which are just declarations, because C++0x allows forward | |
16801 | enum declarations. */ | |
3019eac3 | 16802 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16803 | && die_is_declaration (die, cu)) |
16804 | { | |
52dc124a | 16805 | struct signatured_type *sig_type; |
6c83ed52 | 16806 | |
c0f78cd4 | 16807 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16808 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16809 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16810 | return; |
16811 | } | |
16812 | ||
f792889a | 16813 | new_symbol (die, this_type, cu); |
c906108c SS |
16814 | } |
16815 | ||
57567375 TT |
16816 | /* Helper function for quirk_ada_thick_pointer that examines a bounds |
16817 | expression for an index type and finds the corresponding field | |
16818 | offset in the hidden "P_BOUNDS" structure. Returns true on success | |
16819 | and updates *FIELD, false if it fails to recognize an | |
16820 | expression. */ | |
16821 | ||
16822 | static bool | |
16823 | recognize_bound_expression (struct die_info *die, enum dwarf_attribute name, | |
16824 | int *bounds_offset, struct field *field, | |
16825 | struct dwarf2_cu *cu) | |
16826 | { | |
16827 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
16828 | if (attr == nullptr || !attr->form_is_block ()) | |
16829 | return false; | |
16830 | ||
16831 | const struct dwarf_block *block = attr->as_block (); | |
16832 | const gdb_byte *start = block->data; | |
16833 | const gdb_byte *end = block->data + block->size; | |
16834 | ||
16835 | /* The expression to recognize generally looks like: | |
16836 | ||
16837 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16838 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
16839 | ||
16840 | However, the second "plus_uconst" may be missing: | |
16841 | ||
16842 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16843 | DW_OP_deref_size: 4) | |
16844 | ||
16845 | This happens when the field is at the start of the structure. | |
16846 | ||
16847 | Also, the final deref may not be sized: | |
16848 | ||
16849 | (DW_OP_push_object_address; DW_OP_plus_uconst: 4; DW_OP_deref; | |
16850 | DW_OP_deref) | |
16851 | ||
16852 | This happens when the size of the index type happens to be the | |
16853 | same as the architecture's word size. This can occur with or | |
16854 | without the second plus_uconst. */ | |
16855 | ||
16856 | if (end - start < 2) | |
16857 | return false; | |
16858 | if (*start++ != DW_OP_push_object_address) | |
16859 | return false; | |
16860 | if (*start++ != DW_OP_plus_uconst) | |
16861 | return false; | |
16862 | ||
16863 | uint64_t this_bound_off; | |
16864 | start = gdb_read_uleb128 (start, end, &this_bound_off); | |
16865 | if (start == nullptr || (int) this_bound_off != this_bound_off) | |
16866 | return false; | |
16867 | /* Update *BOUNDS_OFFSET if needed, or alternatively verify that it | |
16868 | is consistent among all bounds. */ | |
16869 | if (*bounds_offset == -1) | |
16870 | *bounds_offset = this_bound_off; | |
16871 | else if (*bounds_offset != this_bound_off) | |
16872 | return false; | |
16873 | ||
16874 | if (start == end || *start++ != DW_OP_deref) | |
16875 | return false; | |
16876 | ||
16877 | int offset = 0; | |
16878 | if (start ==end) | |
16879 | return false; | |
16880 | else if (*start == DW_OP_deref_size || *start == DW_OP_deref) | |
16881 | { | |
16882 | /* This means an offset of 0. */ | |
16883 | } | |
16884 | else if (*start++ != DW_OP_plus_uconst) | |
16885 | return false; | |
16886 | else | |
16887 | { | |
16888 | /* The size is the parameter to DW_OP_plus_uconst. */ | |
16889 | uint64_t val; | |
16890 | start = gdb_read_uleb128 (start, end, &val); | |
16891 | if (start == nullptr) | |
16892 | return false; | |
16893 | if ((int) val != val) | |
16894 | return false; | |
16895 | offset = val; | |
16896 | } | |
16897 | ||
16898 | if (start == end) | |
16899 | return false; | |
16900 | ||
16901 | uint64_t size; | |
16902 | if (*start == DW_OP_deref_size) | |
16903 | { | |
16904 | start = gdb_read_uleb128 (start + 1, end, &size); | |
16905 | if (start == nullptr) | |
16906 | return false; | |
16907 | } | |
16908 | else if (*start == DW_OP_deref) | |
16909 | { | |
16910 | size = cu->header.addr_size; | |
16911 | ++start; | |
16912 | } | |
16913 | else | |
16914 | return false; | |
16915 | ||
16916 | SET_FIELD_BITPOS (*field, 8 * offset); | |
16917 | if (size != TYPE_LENGTH (field->type ())) | |
16918 | FIELD_BITSIZE (*field) = 8 * size; | |
16919 | ||
16920 | return true; | |
16921 | } | |
16922 | ||
16923 | /* With -fgnat-encodings=minimal, gcc will emit some unusual DWARF for | |
16924 | some kinds of Ada arrays: | |
16925 | ||
16926 | <1><11db>: Abbrev Number: 7 (DW_TAG_array_type) | |
16927 | <11dc> DW_AT_name : (indirect string, offset: 0x1bb8): string | |
16928 | <11e0> DW_AT_data_location: 2 byte block: 97 6 | |
16929 | (DW_OP_push_object_address; DW_OP_deref) | |
16930 | <11e3> DW_AT_type : <0x1173> | |
16931 | <11e7> DW_AT_sibling : <0x1201> | |
16932 | <2><11eb>: Abbrev Number: 8 (DW_TAG_subrange_type) | |
16933 | <11ec> DW_AT_type : <0x1206> | |
16934 | <11f0> DW_AT_lower_bound : 6 byte block: 97 23 8 6 94 4 | |
16935 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16936 | DW_OP_deref_size: 4) | |
16937 | <11f7> DW_AT_upper_bound : 8 byte block: 97 23 8 6 23 4 94 4 | |
16938 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16939 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
16940 | ||
16941 | This actually represents a "thick pointer", which is a structure | |
16942 | with two elements: one that is a pointer to the array data, and one | |
16943 | that is a pointer to another structure; this second structure holds | |
16944 | the array bounds. | |
16945 | ||
16946 | This returns a new type on success, or nullptr if this didn't | |
16947 | recognize the type. */ | |
16948 | ||
16949 | static struct type * | |
16950 | quirk_ada_thick_pointer (struct die_info *die, struct dwarf2_cu *cu, | |
16951 | struct type *type) | |
16952 | { | |
16953 | struct attribute *attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
16954 | /* So far we've only seen this with block form. */ | |
16955 | if (attr == nullptr || !attr->form_is_block ()) | |
16956 | return nullptr; | |
16957 | ||
16958 | /* Note that this will fail if the structure layout is changed by | |
16959 | the compiler. However, we have no good way to recognize some | |
16960 | other layout, because we don't know what expression the compiler | |
16961 | might choose to emit should this happen. */ | |
16962 | struct dwarf_block *blk = attr->as_block (); | |
16963 | if (blk->size != 2 | |
16964 | || blk->data[0] != DW_OP_push_object_address | |
16965 | || blk->data[1] != DW_OP_deref) | |
16966 | return nullptr; | |
16967 | ||
16968 | int bounds_offset = -1; | |
16969 | int max_align = -1; | |
16970 | std::vector<struct field> range_fields; | |
16971 | for (struct die_info *child_die = die->child; | |
16972 | child_die; | |
16973 | child_die = child_die->sibling) | |
16974 | { | |
16975 | if (child_die->tag == DW_TAG_subrange_type) | |
16976 | { | |
16977 | struct type *underlying = read_subrange_index_type (child_die, cu); | |
16978 | ||
16979 | int this_align = type_align (underlying); | |
16980 | if (this_align > max_align) | |
16981 | max_align = this_align; | |
16982 | ||
16983 | range_fields.emplace_back (); | |
16984 | range_fields.emplace_back (); | |
16985 | ||
16986 | struct field &lower = range_fields[range_fields.size () - 2]; | |
16987 | struct field &upper = range_fields[range_fields.size () - 1]; | |
16988 | ||
16989 | lower.set_type (underlying); | |
16990 | FIELD_ARTIFICIAL (lower) = 1; | |
16991 | ||
16992 | upper.set_type (underlying); | |
16993 | FIELD_ARTIFICIAL (upper) = 1; | |
16994 | ||
16995 | if (!recognize_bound_expression (child_die, DW_AT_lower_bound, | |
16996 | &bounds_offset, &lower, cu) | |
16997 | || !recognize_bound_expression (child_die, DW_AT_upper_bound, | |
16998 | &bounds_offset, &upper, cu)) | |
16999 | return nullptr; | |
17000 | } | |
17001 | } | |
17002 | ||
17003 | /* This shouldn't really happen, but double-check that we found | |
17004 | where the bounds are stored. */ | |
17005 | if (bounds_offset == -1) | |
17006 | return nullptr; | |
17007 | ||
17008 | struct objfile *objfile = cu->per_objfile->objfile; | |
17009 | for (int i = 0; i < range_fields.size (); i += 2) | |
17010 | { | |
17011 | char name[20]; | |
17012 | ||
17013 | /* Set the name of each field in the bounds. */ | |
17014 | xsnprintf (name, sizeof (name), "LB%d", i / 2); | |
17015 | FIELD_NAME (range_fields[i]) = objfile->intern (name); | |
17016 | xsnprintf (name, sizeof (name), "UB%d", i / 2); | |
17017 | FIELD_NAME (range_fields[i + 1]) = objfile->intern (name); | |
17018 | } | |
17019 | ||
17020 | struct type *bounds = alloc_type (objfile); | |
17021 | bounds->set_code (TYPE_CODE_STRUCT); | |
17022 | ||
17023 | bounds->set_num_fields (range_fields.size ()); | |
17024 | bounds->set_fields | |
17025 | ((struct field *) TYPE_ALLOC (bounds, (bounds->num_fields () | |
17026 | * sizeof (struct field)))); | |
17027 | memcpy (bounds->fields (), range_fields.data (), | |
17028 | bounds->num_fields () * sizeof (struct field)); | |
17029 | ||
17030 | int last_fieldno = range_fields.size () - 1; | |
17031 | int bounds_size = (TYPE_FIELD_BITPOS (bounds, last_fieldno) / 8 | |
17032 | + TYPE_LENGTH (bounds->field (last_fieldno).type ())); | |
17033 | TYPE_LENGTH (bounds) = align_up (bounds_size, max_align); | |
17034 | ||
17035 | /* Rewrite the existing array type in place. Specifically, we | |
17036 | remove any dynamic properties we might have read, and we replace | |
17037 | the index types. */ | |
17038 | struct type *iter = type; | |
17039 | for (int i = 0; i < range_fields.size (); i += 2) | |
17040 | { | |
17041 | gdb_assert (iter->code () == TYPE_CODE_ARRAY); | |
17042 | iter->main_type->dyn_prop_list = nullptr; | |
17043 | iter->set_index_type | |
17044 | (create_static_range_type (NULL, bounds->field (i).type (), 1, 0)); | |
17045 | iter = TYPE_TARGET_TYPE (iter); | |
17046 | } | |
17047 | ||
17048 | struct type *result = alloc_type (objfile); | |
17049 | result->set_code (TYPE_CODE_STRUCT); | |
17050 | ||
17051 | result->set_num_fields (2); | |
17052 | result->set_fields | |
17053 | ((struct field *) TYPE_ZALLOC (result, (result->num_fields () | |
17054 | * sizeof (struct field)))); | |
17055 | ||
17056 | /* The names are chosen to coincide with what the compiler does with | |
17057 | -fgnat-encodings=all, which the Ada code in gdb already | |
17058 | understands. */ | |
17059 | TYPE_FIELD_NAME (result, 0) = "P_ARRAY"; | |
17060 | result->field (0).set_type (lookup_pointer_type (type)); | |
17061 | ||
17062 | TYPE_FIELD_NAME (result, 1) = "P_BOUNDS"; | |
17063 | result->field (1).set_type (lookup_pointer_type (bounds)); | |
17064 | SET_FIELD_BITPOS (result->field (1), 8 * bounds_offset); | |
17065 | ||
17066 | result->set_name (type->name ()); | |
17067 | TYPE_LENGTH (result) = (TYPE_LENGTH (result->field (0).type ()) | |
17068 | + TYPE_LENGTH (result->field (1).type ())); | |
17069 | ||
17070 | return result; | |
17071 | } | |
17072 | ||
c906108c SS |
17073 | /* Extract all information from a DW_TAG_array_type DIE and put it in |
17074 | the DIE's type field. For now, this only handles one dimensional | |
17075 | arrays. */ | |
17076 | ||
f792889a | 17077 | static struct type * |
e7c27a73 | 17078 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17079 | { |
5e22e966 | 17080 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 17081 | struct die_info *child_die; |
7e314c57 | 17082 | struct type *type; |
c906108c | 17083 | struct type *element_type, *range_type, *index_type; |
c906108c | 17084 | struct attribute *attr; |
15d034d0 | 17085 | const char *name; |
a405673c | 17086 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 17087 | unsigned int bit_stride = 0; |
c906108c | 17088 | |
e7c27a73 | 17089 | element_type = die_type (die, cu); |
c906108c | 17090 | |
7e314c57 JK |
17091 | /* The die_type call above may have already set the type for this DIE. */ |
17092 | type = get_die_type (die, cu); | |
17093 | if (type) | |
17094 | return type; | |
17095 | ||
dc53a7ad JB |
17096 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
17097 | if (attr != NULL) | |
a405673c JB |
17098 | { |
17099 | int stride_ok; | |
293e7e51 | 17100 | struct type *prop_type = cu->addr_sized_int_type (false); |
a405673c JB |
17101 | |
17102 | byte_stride_prop | |
17103 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
17104 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
17105 | prop_type); | |
a405673c JB |
17106 | if (!stride_ok) |
17107 | { | |
b98664d3 | 17108 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
17109 | " - DIE at %s [in module %s]"), |
17110 | sect_offset_str (die->sect_off), | |
5e22e966 | 17111 | objfile_name (cu->per_objfile->objfile)); |
a405673c JB |
17112 | /* Ignore this attribute. We will likely not be able to print |
17113 | arrays of this type correctly, but there is little we can do | |
17114 | to help if we cannot read the attribute's value. */ | |
17115 | byte_stride_prop = NULL; | |
17116 | } | |
17117 | } | |
dc53a7ad JB |
17118 | |
17119 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17120 | if (attr != NULL) | |
529908cb | 17121 | bit_stride = attr->constant_value (0); |
dc53a7ad | 17122 | |
c906108c SS |
17123 | /* Irix 6.2 native cc creates array types without children for |
17124 | arrays with unspecified length. */ | |
639d11d3 | 17125 | if (die->child == NULL) |
c906108c | 17126 | { |
46bf5051 | 17127 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 17128 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 17129 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 17130 | byte_stride_prop, bit_stride); |
f792889a | 17131 | return set_die_type (die, type, cu); |
c906108c SS |
17132 | } |
17133 | ||
791afaa2 | 17134 | std::vector<struct type *> range_types; |
639d11d3 | 17135 | child_die = die->child; |
c906108c SS |
17136 | while (child_die && child_die->tag) |
17137 | { | |
17138 | if (child_die->tag == DW_TAG_subrange_type) | |
17139 | { | |
f792889a | 17140 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 17141 | |
dda83cd7 SM |
17142 | if (child_type != NULL) |
17143 | { | |
0963b4bd | 17144 | /* The range type was succesfully read. Save it for the |
dda83cd7 | 17145 | array type creation. */ |
791afaa2 | 17146 | range_types.push_back (child_type); |
dda83cd7 | 17147 | } |
c906108c | 17148 | } |
436c571c | 17149 | child_die = child_die->sibling; |
c906108c SS |
17150 | } |
17151 | ||
17152 | /* Dwarf2 dimensions are output from left to right, create the | |
17153 | necessary array types in backwards order. */ | |
7ca2d3a3 | 17154 | |
c906108c | 17155 | type = element_type; |
7ca2d3a3 DL |
17156 | |
17157 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
17158 | { | |
17159 | int i = 0; | |
9a619af0 | 17160 | |
791afaa2 | 17161 | while (i < range_types.size ()) |
10f6a3ad TT |
17162 | { |
17163 | type = create_array_type_with_stride (NULL, type, range_types[i++], | |
17164 | byte_stride_prop, bit_stride); | |
17165 | bit_stride = 0; | |
17166 | byte_stride_prop = nullptr; | |
17167 | } | |
7ca2d3a3 DL |
17168 | } |
17169 | else | |
17170 | { | |
791afaa2 | 17171 | size_t ndim = range_types.size (); |
7ca2d3a3 | 17172 | while (ndim-- > 0) |
10f6a3ad TT |
17173 | { |
17174 | type = create_array_type_with_stride (NULL, type, range_types[ndim], | |
17175 | byte_stride_prop, bit_stride); | |
17176 | bit_stride = 0; | |
17177 | byte_stride_prop = nullptr; | |
17178 | } | |
7ca2d3a3 | 17179 | } |
c906108c | 17180 | |
f5f8a009 EZ |
17181 | /* Understand Dwarf2 support for vector types (like they occur on |
17182 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
17183 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
17184 | custom vendor extension. The main difference between a regular | |
17185 | array and the vector variant is that vectors are passed by value | |
17186 | to functions. */ | |
e142c38c | 17187 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 17188 | if (attr != nullptr) |
ea37ba09 | 17189 | make_vector_type (type); |
f5f8a009 | 17190 | |
dbc98a8b KW |
17191 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
17192 | implementation may choose to implement triple vectors using this | |
17193 | attribute. */ | |
17194 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb | 17195 | if (attr != nullptr && attr->form_is_unsigned ()) |
dbc98a8b | 17196 | { |
529908cb TT |
17197 | if (attr->as_unsigned () >= TYPE_LENGTH (type)) |
17198 | TYPE_LENGTH (type) = attr->as_unsigned (); | |
dbc98a8b | 17199 | else |
b98664d3 | 17200 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 17201 | "than the total size of elements")); |
dbc98a8b KW |
17202 | } |
17203 | ||
39cbfefa DJ |
17204 | name = dwarf2_name (die, cu); |
17205 | if (name) | |
d0e39ea2 | 17206 | type->set_name (name); |
6e70227d | 17207 | |
2b4424c3 TT |
17208 | maybe_set_alignment (cu, die, type); |
17209 | ||
57567375 TT |
17210 | struct type *replacement_type = nullptr; |
17211 | if (cu->language == language_ada) | |
17212 | { | |
17213 | replacement_type = quirk_ada_thick_pointer (die, cu, type); | |
17214 | if (replacement_type != nullptr) | |
17215 | type = replacement_type; | |
17216 | } | |
17217 | ||
0963b4bd | 17218 | /* Install the type in the die. */ |
57567375 | 17219 | set_die_type (die, type, cu, replacement_type != nullptr); |
7e314c57 JK |
17220 | |
17221 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17222 | set_descriptive_type (type, die, cu); |
17223 | ||
7e314c57 | 17224 | return type; |
c906108c SS |
17225 | } |
17226 | ||
7ca2d3a3 | 17227 | static enum dwarf_array_dim_ordering |
6e70227d | 17228 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
17229 | { |
17230 | struct attribute *attr; | |
17231 | ||
17232 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
17233 | ||
435d3d88 | 17234 | if (attr != nullptr) |
1bc397c5 TT |
17235 | { |
17236 | LONGEST val = attr->constant_value (-1); | |
17237 | if (val == DW_ORD_row_major || val == DW_ORD_col_major) | |
17238 | return (enum dwarf_array_dim_ordering) val; | |
17239 | } | |
7ca2d3a3 | 17240 | |
0963b4bd MS |
17241 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
17242 | opposite order to the dwarf2 specification, but data is still | |
17243 | laid out as per normal fortran. | |
7ca2d3a3 | 17244 | |
0963b4bd MS |
17245 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
17246 | version checking. */ | |
7ca2d3a3 | 17247 | |
905e0470 PM |
17248 | if (cu->language == language_fortran |
17249 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
17250 | { |
17251 | return DW_ORD_row_major; | |
17252 | } | |
17253 | ||
3a3440fb | 17254 | switch (cu->language_defn->array_ordering ()) |
7ca2d3a3 DL |
17255 | { |
17256 | case array_column_major: | |
17257 | return DW_ORD_col_major; | |
17258 | case array_row_major: | |
17259 | default: | |
17260 | return DW_ORD_row_major; | |
17261 | }; | |
17262 | } | |
17263 | ||
72019c9c | 17264 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 17265 | the DIE's type field. */ |
72019c9c | 17266 | |
f792889a | 17267 | static struct type * |
72019c9c GM |
17268 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
17269 | { | |
7e314c57 JK |
17270 | struct type *domain_type, *set_type; |
17271 | struct attribute *attr; | |
f792889a | 17272 | |
7e314c57 JK |
17273 | domain_type = die_type (die, cu); |
17274 | ||
17275 | /* The die_type call above may have already set the type for this DIE. */ | |
17276 | set_type = get_die_type (die, cu); | |
17277 | if (set_type) | |
17278 | return set_type; | |
17279 | ||
17280 | set_type = create_set_type (NULL, domain_type); | |
17281 | ||
17282 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb TT |
17283 | if (attr != nullptr && attr->form_is_unsigned ()) |
17284 | TYPE_LENGTH (set_type) = attr->as_unsigned (); | |
7e314c57 | 17285 | |
2b4424c3 TT |
17286 | maybe_set_alignment (cu, die, set_type); |
17287 | ||
f792889a | 17288 | return set_die_type (die, set_type, cu); |
72019c9c | 17289 | } |
7ca2d3a3 | 17290 | |
0971de02 TT |
17291 | /* A helper for read_common_block that creates a locexpr baton. |
17292 | SYM is the symbol which we are marking as computed. | |
17293 | COMMON_DIE is the DIE for the common block. | |
17294 | COMMON_LOC is the location expression attribute for the common | |
17295 | block itself. | |
17296 | MEMBER_LOC is the location expression attribute for the particular | |
17297 | member of the common block that we are processing. | |
17298 | CU is the CU from which the above come. */ | |
17299 | ||
17300 | static void | |
17301 | mark_common_block_symbol_computed (struct symbol *sym, | |
17302 | struct die_info *common_die, | |
17303 | struct attribute *common_loc, | |
17304 | struct attribute *member_loc, | |
17305 | struct dwarf2_cu *cu) | |
17306 | { | |
5e22e966 | 17307 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 17308 | struct objfile *objfile = per_objfile->objfile; |
0971de02 TT |
17309 | struct dwarf2_locexpr_baton *baton; |
17310 | gdb_byte *ptr; | |
17311 | unsigned int cu_off; | |
08feed99 | 17312 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
17313 | LONGEST offset = 0; |
17314 | ||
17315 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
17316 | gdb_assert (common_loc->form_is_block ()); |
17317 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 17318 | || member_loc->form_is_constant ()); |
0971de02 | 17319 | |
8d749320 | 17320 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 17321 | baton->per_objfile = per_objfile; |
0971de02 TT |
17322 | baton->per_cu = cu->per_cu; |
17323 | gdb_assert (baton->per_cu); | |
17324 | ||
17325 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
17326 | ||
cd6c91b4 | 17327 | if (member_loc->form_is_constant ()) |
0971de02 | 17328 | { |
0826b30a | 17329 | offset = member_loc->constant_value (0); |
0971de02 TT |
17330 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
17331 | } | |
17332 | else | |
9d2246fc | 17333 | baton->size += member_loc->as_block ()->size; |
0971de02 | 17334 | |
224c3ddb | 17335 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
17336 | baton->data = ptr; |
17337 | ||
17338 | *ptr++ = DW_OP_call4; | |
9c541725 | 17339 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
17340 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
17341 | ptr += 4; | |
17342 | ||
cd6c91b4 | 17343 | if (member_loc->form_is_constant ()) |
0971de02 TT |
17344 | { |
17345 | *ptr++ = DW_OP_addr; | |
17346 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
17347 | ptr += cu->header.addr_size; | |
17348 | } | |
17349 | else | |
17350 | { | |
17351 | /* We have to copy the data here, because DW_OP_call4 will only | |
17352 | use a DW_AT_location attribute. */ | |
9d2246fc TT |
17353 | struct dwarf_block *block = member_loc->as_block (); |
17354 | memcpy (ptr, block->data, block->size); | |
17355 | ptr += block->size; | |
0971de02 TT |
17356 | } |
17357 | ||
17358 | *ptr++ = DW_OP_plus; | |
17359 | gdb_assert (ptr - baton->data == baton->size); | |
17360 | ||
0971de02 | 17361 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 17362 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
17363 | } |
17364 | ||
4357ac6c TT |
17365 | /* Create appropriate locally-scoped variables for all the |
17366 | DW_TAG_common_block entries. Also create a struct common_block | |
17367 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 17368 | is used to separate the common blocks name namespace from regular |
4357ac6c | 17369 | variable names. */ |
c906108c SS |
17370 | |
17371 | static void | |
e7c27a73 | 17372 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17373 | { |
0971de02 TT |
17374 | struct attribute *attr; |
17375 | ||
17376 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 17377 | if (attr != nullptr) |
0971de02 TT |
17378 | { |
17379 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 17380 | if (attr->form_is_block ()) |
dda83cd7 | 17381 | { |
0971de02 | 17382 | /* Ok. */ |
dda83cd7 | 17383 | } |
cd6c91b4 | 17384 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 17385 | { |
0971de02 TT |
17386 | dwarf2_complex_location_expr_complaint (); |
17387 | attr = NULL; | |
dda83cd7 | 17388 | } |
0971de02 | 17389 | else |
dda83cd7 | 17390 | { |
0971de02 TT |
17391 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
17392 | "common block member"); | |
17393 | attr = NULL; | |
dda83cd7 | 17394 | } |
0971de02 TT |
17395 | } |
17396 | ||
639d11d3 | 17397 | if (die->child != NULL) |
c906108c | 17398 | { |
5e22e966 | 17399 | struct objfile *objfile = cu->per_objfile->objfile; |
4357ac6c TT |
17400 | struct die_info *child_die; |
17401 | size_t n_entries = 0, size; | |
17402 | struct common_block *common_block; | |
17403 | struct symbol *sym; | |
74ac6d43 | 17404 | |
4357ac6c TT |
17405 | for (child_die = die->child; |
17406 | child_die && child_die->tag; | |
436c571c | 17407 | child_die = child_die->sibling) |
4357ac6c TT |
17408 | ++n_entries; |
17409 | ||
17410 | size = (sizeof (struct common_block) | |
17411 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
17412 | common_block |
17413 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
17414 | size); | |
4357ac6c TT |
17415 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
17416 | common_block->n_entries = 0; | |
17417 | ||
17418 | for (child_die = die->child; | |
17419 | child_die && child_die->tag; | |
436c571c | 17420 | child_die = child_die->sibling) |
4357ac6c TT |
17421 | { |
17422 | /* Create the symbol in the DW_TAG_common_block block in the current | |
17423 | symbol scope. */ | |
e7c27a73 | 17424 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
17425 | if (sym != NULL) |
17426 | { | |
17427 | struct attribute *member_loc; | |
17428 | ||
17429 | common_block->contents[common_block->n_entries++] = sym; | |
17430 | ||
17431 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
17432 | cu); | |
17433 | if (member_loc) | |
17434 | { | |
17435 | /* GDB has handled this for a long time, but it is | |
17436 | not specified by DWARF. It seems to have been | |
17437 | emitted by gfortran at least as recently as: | |
17438 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 17439 | complaint (_("Variable in common block has " |
0971de02 | 17440 | "DW_AT_data_member_location " |
9d8780f0 SM |
17441 | "- DIE at %s [in module %s]"), |
17442 | sect_offset_str (child_die->sect_off), | |
518817b3 | 17443 | objfile_name (objfile)); |
0971de02 | 17444 | |
cd6c91b4 | 17445 | if (member_loc->form_is_section_offset ()) |
0971de02 | 17446 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 17447 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 17448 | || member_loc->form_is_block ()) |
0971de02 | 17449 | { |
435d3d88 | 17450 | if (attr != nullptr) |
0971de02 TT |
17451 | mark_common_block_symbol_computed (sym, die, attr, |
17452 | member_loc, cu); | |
17453 | } | |
17454 | else | |
17455 | dwarf2_complex_location_expr_complaint (); | |
17456 | } | |
17457 | } | |
c906108c | 17458 | } |
4357ac6c TT |
17459 | |
17460 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
17461 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
17462 | } |
17463 | } | |
17464 | ||
0114d602 | 17465 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 17466 | |
0114d602 DJ |
17467 | static struct type * |
17468 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 17469 | { |
5e22e966 | 17470 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17471 | const char *previous_prefix, *name; |
9219021c | 17472 | int is_anonymous; |
0114d602 DJ |
17473 | struct type *type; |
17474 | ||
17475 | /* For extensions, reuse the type of the original namespace. */ | |
17476 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
17477 | { | |
17478 | struct die_info *ext_die; | |
17479 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 17480 | |
0114d602 DJ |
17481 | ext_die = dwarf2_extension (die, &ext_cu); |
17482 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
17483 | |
17484 | /* EXT_CU may not be the same as CU. | |
02142a6c | 17485 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
17486 | return set_die_type (die, type, cu); |
17487 | } | |
9219021c | 17488 | |
e142c38c | 17489 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
17490 | |
17491 | /* Now build the name of the current namespace. */ | |
17492 | ||
0114d602 DJ |
17493 | previous_prefix = determine_prefix (die, cu); |
17494 | if (previous_prefix[0] != '\0') | |
17495 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 17496 | previous_prefix, name, 0, cu); |
0114d602 DJ |
17497 | |
17498 | /* Create the type. */ | |
19f392bc | 17499 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 17500 | |
60531b24 | 17501 | return set_die_type (die, type, cu); |
0114d602 DJ |
17502 | } |
17503 | ||
22cee43f | 17504 | /* Read a namespace scope. */ |
0114d602 DJ |
17505 | |
17506 | static void | |
17507 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
17508 | { | |
5e22e966 | 17509 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17510 | int is_anonymous; |
9219021c | 17511 | |
5c4e30ca DC |
17512 | /* Add a symbol associated to this if we haven't seen the namespace |
17513 | before. Also, add a using directive if it's an anonymous | |
17514 | namespace. */ | |
9219021c | 17515 | |
f2f0e013 | 17516 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
17517 | { |
17518 | struct type *type; | |
17519 | ||
0114d602 | 17520 | type = read_type_die (die, cu); |
e7c27a73 | 17521 | new_symbol (die, type, cu); |
5c4e30ca | 17522 | |
e8e80198 | 17523 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 17524 | if (is_anonymous) |
0114d602 DJ |
17525 | { |
17526 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 17527 | |
eb1e02fd | 17528 | std::vector<const char *> excludes; |
804d2729 | 17529 | add_using_directive (using_directives (cu), |
7d93a1e0 | 17530 | previous_prefix, type->name (), NULL, |
eb1e02fd | 17531 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 17532 | } |
5c4e30ca | 17533 | } |
9219021c | 17534 | |
639d11d3 | 17535 | if (die->child != NULL) |
d9fa45fe | 17536 | { |
639d11d3 | 17537 | struct die_info *child_die = die->child; |
6e70227d | 17538 | |
d9fa45fe DC |
17539 | while (child_die && child_die->tag) |
17540 | { | |
e7c27a73 | 17541 | process_die (child_die, cu); |
436c571c | 17542 | child_die = child_die->sibling; |
d9fa45fe DC |
17543 | } |
17544 | } | |
38d518c9 EZ |
17545 | } |
17546 | ||
f55ee35c JK |
17547 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
17548 | imported module. Still we need that type as local Fortran "use ... only" | |
17549 | declaration imports depend on the created type in determine_prefix. */ | |
17550 | ||
17551 | static struct type * | |
17552 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
17553 | { | |
5e22e966 | 17554 | struct objfile *objfile = cu->per_objfile->objfile; |
15d034d0 | 17555 | const char *module_name; |
f55ee35c JK |
17556 | struct type *type; |
17557 | ||
17558 | module_name = dwarf2_name (die, cu); | |
19f392bc | 17559 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 17560 | |
f55ee35c JK |
17561 | return set_die_type (die, type, cu); |
17562 | } | |
17563 | ||
5d7cb8df JK |
17564 | /* Read a Fortran module. */ |
17565 | ||
17566 | static void | |
17567 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
17568 | { | |
17569 | struct die_info *child_die = die->child; | |
530e8392 KB |
17570 | struct type *type; |
17571 | ||
17572 | type = read_type_die (die, cu); | |
17573 | new_symbol (die, type, cu); | |
5d7cb8df | 17574 | |
5d7cb8df JK |
17575 | while (child_die && child_die->tag) |
17576 | { | |
17577 | process_die (child_die, cu); | |
436c571c | 17578 | child_die = child_die->sibling; |
5d7cb8df JK |
17579 | } |
17580 | } | |
17581 | ||
38d518c9 EZ |
17582 | /* Return the name of the namespace represented by DIE. Set |
17583 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
17584 | namespace. */ | |
17585 | ||
17586 | static const char * | |
e142c38c | 17587 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
17588 | { |
17589 | struct die_info *current_die; | |
17590 | const char *name = NULL; | |
17591 | ||
17592 | /* Loop through the extensions until we find a name. */ | |
17593 | ||
17594 | for (current_die = die; | |
17595 | current_die != NULL; | |
f2f0e013 | 17596 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 17597 | { |
96553a0c DE |
17598 | /* We don't use dwarf2_name here so that we can detect the absence |
17599 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 17600 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 17601 | |
38d518c9 EZ |
17602 | if (name != NULL) |
17603 | break; | |
17604 | } | |
17605 | ||
17606 | /* Is it an anonymous namespace? */ | |
17607 | ||
17608 | *is_anonymous = (name == NULL); | |
17609 | if (*is_anonymous) | |
2b1dbab0 | 17610 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
17611 | |
17612 | return name; | |
d9fa45fe DC |
17613 | } |
17614 | ||
c906108c SS |
17615 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
17616 | the user defined type vector. */ | |
17617 | ||
f792889a | 17618 | static struct type * |
e7c27a73 | 17619 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17620 | { |
5e22e966 | 17621 | struct gdbarch *gdbarch = cu->per_objfile->objfile->arch (); |
e7c27a73 | 17622 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 17623 | struct type *type; |
8b2dbe47 KB |
17624 | struct attribute *attr_byte_size; |
17625 | struct attribute *attr_address_class; | |
17626 | int byte_size, addr_class; | |
7e314c57 JK |
17627 | struct type *target_type; |
17628 | ||
17629 | target_type = die_type (die, cu); | |
c906108c | 17630 | |
7e314c57 JK |
17631 | /* The die_type call above may have already set the type for this DIE. */ |
17632 | type = get_die_type (die, cu); | |
17633 | if (type) | |
17634 | return type; | |
17635 | ||
17636 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17637 | |
e142c38c | 17638 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 | 17639 | if (attr_byte_size) |
529908cb | 17640 | byte_size = attr_byte_size->constant_value (cu_header->addr_size); |
c906108c | 17641 | else |
8b2dbe47 KB |
17642 | byte_size = cu_header->addr_size; |
17643 | ||
e142c38c | 17644 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 | 17645 | if (attr_address_class) |
529908cb | 17646 | addr_class = attr_address_class->constant_value (DW_ADDR_none); |
8b2dbe47 KB |
17647 | else |
17648 | addr_class = DW_ADDR_none; | |
17649 | ||
2b4424c3 TT |
17650 | ULONGEST alignment = get_alignment (cu, die); |
17651 | ||
17652 | /* If the pointer size, alignment, or address class is different | |
17653 | than the default, create a type variant marked as such and set | |
17654 | the length accordingly. */ | |
17655 | if (TYPE_LENGTH (type) != byte_size | |
17656 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17657 | && alignment != TYPE_RAW_ALIGN (type)) | |
17658 | || addr_class != DW_ADDR_none) | |
c906108c | 17659 | { |
5e2b427d | 17660 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 | 17661 | { |
314ad88d PA |
17662 | type_instance_flags type_flags |
17663 | = gdbarch_address_class_type_flags (gdbarch, byte_size, | |
17664 | addr_class); | |
876cecd0 TT |
17665 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17666 | == 0); | |
8b2dbe47 KB |
17667 | type = make_type_with_address_space (type, type_flags); |
17668 | } | |
17669 | else if (TYPE_LENGTH (type) != byte_size) | |
17670 | { | |
b98664d3 | 17671 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17672 | } |
2b4424c3 TT |
17673 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17674 | { | |
b98664d3 | 17675 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17676 | " - DIE at %s [in module %s]"), |
17677 | sect_offset_str (die->sect_off), | |
5e22e966 | 17678 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 17679 | } |
6e70227d | 17680 | else |
9a619af0 MS |
17681 | { |
17682 | /* Should we also complain about unhandled address classes? */ | |
17683 | } | |
c906108c | 17684 | } |
8b2dbe47 KB |
17685 | |
17686 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17687 | set_type_align (type, alignment); |
f792889a | 17688 | return set_die_type (die, type, cu); |
c906108c SS |
17689 | } |
17690 | ||
17691 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17692 | the user defined type vector. */ | |
17693 | ||
f792889a | 17694 | static struct type * |
e7c27a73 | 17695 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17696 | { |
17697 | struct type *type; | |
17698 | struct type *to_type; | |
17699 | struct type *domain; | |
17700 | ||
e7c27a73 DJ |
17701 | to_type = die_type (die, cu); |
17702 | domain = die_containing_type (die, cu); | |
0d5de010 | 17703 | |
7e314c57 JK |
17704 | /* The calls above may have already set the type for this DIE. */ |
17705 | type = get_die_type (die, cu); | |
17706 | if (type) | |
17707 | return type; | |
17708 | ||
78134374 | 17709 | if (check_typedef (to_type)->code () == TYPE_CODE_METHOD) |
0d5de010 | 17710 | type = lookup_methodptr_type (to_type); |
78134374 | 17711 | else if (check_typedef (to_type)->code () == TYPE_CODE_FUNC) |
7078baeb | 17712 | { |
5e22e966 | 17713 | struct type *new_type = alloc_type (cu->per_objfile->objfile); |
7078baeb TT |
17714 | |
17715 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
80fc5e77 | 17716 | to_type->fields (), to_type->num_fields (), |
a409645d | 17717 | to_type->has_varargs ()); |
7078baeb TT |
17718 | type = lookup_methodptr_type (new_type); |
17719 | } | |
0d5de010 DJ |
17720 | else |
17721 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17722 | |
f792889a | 17723 | return set_die_type (die, type, cu); |
c906108c SS |
17724 | } |
17725 | ||
4297a3f0 | 17726 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17727 | the user defined type vector. */ |
17728 | ||
f792889a | 17729 | static struct type * |
4297a3f0 | 17730 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
dda83cd7 | 17731 | enum type_code refcode) |
c906108c | 17732 | { |
e7c27a73 | 17733 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17734 | struct type *type, *target_type; |
c906108c SS |
17735 | struct attribute *attr; |
17736 | ||
4297a3f0 AV |
17737 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17738 | ||
7e314c57 JK |
17739 | target_type = die_type (die, cu); |
17740 | ||
17741 | /* The die_type call above may have already set the type for this DIE. */ | |
17742 | type = get_die_type (die, cu); | |
17743 | if (type) | |
17744 | return type; | |
17745 | ||
4297a3f0 | 17746 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17747 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17748 | if (attr != nullptr) |
c906108c | 17749 | { |
529908cb | 17750 | TYPE_LENGTH (type) = attr->constant_value (cu_header->addr_size); |
c906108c SS |
17751 | } |
17752 | else | |
17753 | { | |
107d2387 | 17754 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17755 | } |
2b4424c3 | 17756 | maybe_set_alignment (cu, die, type); |
f792889a | 17757 | return set_die_type (die, type, cu); |
c906108c SS |
17758 | } |
17759 | ||
cf363f18 MW |
17760 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17761 | outputs DWARF type qualifiers that apply to an array, not the | |
17762 | element type. But GDB relies on the array element type to carry | |
17763 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17764 | specification. */ | |
17765 | ||
17766 | static struct type * | |
17767 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17768 | struct type *base_type, int cnst, int voltl) | |
17769 | { | |
17770 | struct type *el_type, *inner_array; | |
17771 | ||
17772 | base_type = copy_type (base_type); | |
17773 | inner_array = base_type; | |
17774 | ||
78134374 | 17775 | while (TYPE_TARGET_TYPE (inner_array)->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17776 | { |
17777 | TYPE_TARGET_TYPE (inner_array) = | |
17778 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17779 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17780 | } | |
17781 | ||
17782 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17783 | cnst |= TYPE_CONST (el_type); | |
17784 | voltl |= TYPE_VOLATILE (el_type); | |
17785 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17786 | ||
17787 | return set_die_type (die, base_type, cu); | |
17788 | } | |
17789 | ||
f792889a | 17790 | static struct type * |
e7c27a73 | 17791 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17792 | { |
f792889a | 17793 | struct type *base_type, *cv_type; |
c906108c | 17794 | |
e7c27a73 | 17795 | base_type = die_type (die, cu); |
7e314c57 JK |
17796 | |
17797 | /* The die_type call above may have already set the type for this DIE. */ | |
17798 | cv_type = get_die_type (die, cu); | |
17799 | if (cv_type) | |
17800 | return cv_type; | |
17801 | ||
2f608a3a KW |
17802 | /* In case the const qualifier is applied to an array type, the element type |
17803 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
78134374 | 17804 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 | 17805 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17806 | |
f792889a DJ |
17807 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17808 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17809 | } |
17810 | ||
f792889a | 17811 | static struct type * |
e7c27a73 | 17812 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17813 | { |
f792889a | 17814 | struct type *base_type, *cv_type; |
c906108c | 17815 | |
e7c27a73 | 17816 | base_type = die_type (die, cu); |
7e314c57 JK |
17817 | |
17818 | /* The die_type call above may have already set the type for this DIE. */ | |
17819 | cv_type = get_die_type (die, cu); | |
17820 | if (cv_type) | |
17821 | return cv_type; | |
17822 | ||
cf363f18 MW |
17823 | /* In case the volatile qualifier is applied to an array type, the |
17824 | element type is so qualified, not the array type (section 6.7.3 | |
17825 | of C99). */ | |
78134374 | 17826 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17827 | return add_array_cv_type (die, cu, base_type, 0, 1); |
17828 | ||
f792889a DJ |
17829 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17830 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17831 | } |
17832 | ||
06d66ee9 TT |
17833 | /* Handle DW_TAG_restrict_type. */ |
17834 | ||
17835 | static struct type * | |
17836 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17837 | { | |
17838 | struct type *base_type, *cv_type; | |
17839 | ||
17840 | base_type = die_type (die, cu); | |
17841 | ||
17842 | /* The die_type call above may have already set the type for this DIE. */ | |
17843 | cv_type = get_die_type (die, cu); | |
17844 | if (cv_type) | |
17845 | return cv_type; | |
17846 | ||
17847 | cv_type = make_restrict_type (base_type); | |
17848 | return set_die_type (die, cv_type, cu); | |
17849 | } | |
17850 | ||
a2c2acaf MW |
17851 | /* Handle DW_TAG_atomic_type. */ |
17852 | ||
17853 | static struct type * | |
17854 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17855 | { | |
17856 | struct type *base_type, *cv_type; | |
17857 | ||
17858 | base_type = die_type (die, cu); | |
17859 | ||
17860 | /* The die_type call above may have already set the type for this DIE. */ | |
17861 | cv_type = get_die_type (die, cu); | |
17862 | if (cv_type) | |
17863 | return cv_type; | |
17864 | ||
17865 | cv_type = make_atomic_type (base_type); | |
17866 | return set_die_type (die, cv_type, cu); | |
17867 | } | |
17868 | ||
c906108c SS |
17869 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17870 | the user defined type vector. It isn't really a user defined type, | |
17871 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17872 | attribute to reference it. */ | |
17873 | ||
f792889a | 17874 | static struct type * |
e7c27a73 | 17875 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17876 | { |
5e22e966 | 17877 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 17878 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
17879 | struct type *type, *range_type, *index_type, *char_type; |
17880 | struct attribute *attr; | |
216a7e6b AB |
17881 | struct dynamic_prop prop; |
17882 | bool length_is_constant = true; | |
17883 | LONGEST length; | |
17884 | ||
17885 | /* There are a couple of places where bit sizes might be made use of | |
17886 | when parsing a DW_TAG_string_type, however, no producer that we know | |
17887 | of make use of these. Handling bit sizes that are a multiple of the | |
17888 | byte size is easy enough, but what about other bit sizes? Lets deal | |
17889 | with that problem when we have to. Warn about these attributes being | |
17890 | unsupported, then parse the type and ignore them like we always | |
17891 | have. */ | |
17892 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
17893 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
17894 | { | |
17895 | static bool warning_printed = false; | |
17896 | if (!warning_printed) | |
17897 | { | |
17898 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
17899 | "currently supported on DW_TAG_string_type.")); | |
17900 | warning_printed = true; | |
17901 | } | |
17902 | } | |
c906108c | 17903 | |
e142c38c | 17904 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 17905 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
17906 | { |
17907 | /* The string length describes the location at which the length of | |
17908 | the string can be found. The size of the length field can be | |
17909 | specified with one of the attributes below. */ | |
17910 | struct type *prop_type; | |
17911 | struct attribute *len | |
17912 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
17913 | if (len == nullptr) | |
17914 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 17915 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
17916 | { |
17917 | /* Pass 0 as the default as we know this attribute is constant | |
17918 | and the default value will not be returned. */ | |
0826b30a | 17919 | LONGEST sz = len->constant_value (0); |
293e7e51 | 17920 | prop_type = cu->per_objfile->int_type (sz, true); |
216a7e6b AB |
17921 | } |
17922 | else | |
17923 | { | |
17924 | /* If the size is not specified then we assume it is the size of | |
17925 | an address on this target. */ | |
293e7e51 | 17926 | prop_type = cu->addr_sized_int_type (true); |
216a7e6b AB |
17927 | } |
17928 | ||
17929 | /* Convert the attribute into a dynamic property. */ | |
17930 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17931 | length = 1; | |
17932 | else | |
17933 | length_is_constant = false; | |
17934 | } | |
17935 | else if (attr != nullptr) | |
17936 | { | |
17937 | /* This DW_AT_string_length just contains the length with no | |
17938 | indirection. There's no need to create a dynamic property in this | |
17939 | case. Pass 0 for the default value as we know it will not be | |
17940 | returned in this case. */ | |
0826b30a | 17941 | length = attr->constant_value (0); |
216a7e6b AB |
17942 | } |
17943 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17944 | { |
216a7e6b | 17945 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 17946 | length = attr->constant_value (1); |
c906108c SS |
17947 | } |
17948 | else | |
17949 | { | |
216a7e6b AB |
17950 | /* Use 1 as a fallback length if we have nothing else. */ |
17951 | length = 1; | |
c906108c | 17952 | } |
6ccb9162 | 17953 | |
46bf5051 | 17954 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17955 | if (length_is_constant) |
17956 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17957 | else | |
17958 | { | |
17959 | struct dynamic_prop low_bound; | |
17960 | ||
8c2e4e06 | 17961 | low_bound.set_const_val (1); |
216a7e6b AB |
17962 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); |
17963 | } | |
3b7538c0 UW |
17964 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17965 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17966 | |
f792889a | 17967 | return set_die_type (die, type, cu); |
c906108c SS |
17968 | } |
17969 | ||
4d804846 JB |
17970 | /* Assuming that DIE corresponds to a function, returns nonzero |
17971 | if the function is prototyped. */ | |
17972 | ||
17973 | static int | |
17974 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17975 | { | |
17976 | struct attribute *attr; | |
17977 | ||
17978 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
c45bc3f8 | 17979 | if (attr && attr->as_boolean ()) |
4d804846 JB |
17980 | return 1; |
17981 | ||
17982 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17983 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17984 | languages that allow unprototyped functions (Eg: Objective C). |
17985 | For all other languages, assume that functions are always | |
17986 | prototyped. */ | |
17987 | if (cu->language != language_c | |
17988 | && cu->language != language_objc | |
17989 | && cu->language != language_opencl) | |
17990 | return 1; | |
17991 | ||
17992 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17993 | prototyped and unprototyped functions; default to prototyped, | |
17994 | since that is more common in modern code (and RealView warns | |
17995 | about unprototyped functions). */ | |
17996 | if (producer_is_realview (cu->producer)) | |
17997 | return 1; | |
17998 | ||
17999 | return 0; | |
18000 | } | |
18001 | ||
c906108c SS |
18002 | /* Handle DIES due to C code like: |
18003 | ||
18004 | struct foo | |
c5aa993b JM |
18005 | { |
18006 | int (*funcp)(int a, long l); | |
18007 | int b; | |
18008 | }; | |
c906108c | 18009 | |
0963b4bd | 18010 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 18011 | |
f792889a | 18012 | static struct type * |
e7c27a73 | 18013 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18014 | { |
5e22e966 | 18015 | struct objfile *objfile = cu->per_objfile->objfile; |
0963b4bd MS |
18016 | struct type *type; /* Type that this function returns. */ |
18017 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
18018 | struct attribute *attr; |
18019 | ||
e7c27a73 | 18020 | type = die_type (die, cu); |
7e314c57 JK |
18021 | |
18022 | /* The die_type call above may have already set the type for this DIE. */ | |
18023 | ftype = get_die_type (die, cu); | |
18024 | if (ftype) | |
18025 | return ftype; | |
18026 | ||
0c8b41f1 | 18027 | ftype = lookup_function_type (type); |
c906108c | 18028 | |
4d804846 | 18029 | if (prototyped_function_p (die, cu)) |
27e69b7a | 18030 | ftype->set_is_prototyped (true); |
c906108c | 18031 | |
c055b101 CV |
18032 | /* Store the calling convention in the type if it's available in |
18033 | the subroutine die. Otherwise set the calling convention to | |
18034 | the default value DW_CC_normal. */ | |
18035 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf | 18036 | if (attr != nullptr |
529908cb | 18037 | && is_valid_DW_AT_calling_convention_for_subroutine (attr->constant_value (0))) |
d0922fcf | 18038 | TYPE_CALLING_CONVENTION (ftype) |
529908cb | 18039 | = (enum dwarf_calling_convention) attr->constant_value (0); |
54fcddd0 UW |
18040 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
18041 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
18042 | else | |
18043 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 18044 | |
743649fd MW |
18045 | /* Record whether the function returns normally to its caller or not |
18046 | if the DWARF producer set that information. */ | |
18047 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
c45bc3f8 | 18048 | if (attr && attr->as_boolean ()) |
743649fd MW |
18049 | TYPE_NO_RETURN (ftype) = 1; |
18050 | ||
76c10ea2 GM |
18051 | /* We need to add the subroutine type to the die immediately so |
18052 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 18053 | declared as the same subroutine type. */ |
76c10ea2 | 18054 | set_die_type (die, ftype, cu); |
6e70227d | 18055 | |
639d11d3 | 18056 | if (die->child != NULL) |
c906108c | 18057 | { |
bb5ed363 | 18058 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 18059 | struct die_info *child_die; |
8072405b | 18060 | int nparams, iparams; |
c906108c SS |
18061 | |
18062 | /* Count the number of parameters. | |
dda83cd7 SM |
18063 | FIXME: GDB currently ignores vararg functions, but knows about |
18064 | vararg member functions. */ | |
8072405b | 18065 | nparams = 0; |
639d11d3 | 18066 | child_die = die->child; |
c906108c SS |
18067 | while (child_die && child_die->tag) |
18068 | { | |
18069 | if (child_die->tag == DW_TAG_formal_parameter) | |
18070 | nparams++; | |
18071 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
1d6286ed SM |
18072 | ftype->set_has_varargs (true); |
18073 | ||
436c571c | 18074 | child_die = child_die->sibling; |
c906108c SS |
18075 | } |
18076 | ||
18077 | /* Allocate storage for parameters and fill them in. */ | |
5e33d5f4 | 18078 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
18079 | ftype->set_fields |
18080 | ((struct field *) TYPE_ZALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 18081 | |
8072405b JK |
18082 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
18083 | even if we error out during the parameters reading below. */ | |
18084 | for (iparams = 0; iparams < nparams; iparams++) | |
5d14b6e5 | 18085 | ftype->field (iparams).set_type (void_type); |
8072405b JK |
18086 | |
18087 | iparams = 0; | |
639d11d3 | 18088 | child_die = die->child; |
c906108c SS |
18089 | while (child_die && child_die->tag) |
18090 | { | |
18091 | if (child_die->tag == DW_TAG_formal_parameter) | |
18092 | { | |
3ce3b1ba PA |
18093 | struct type *arg_type; |
18094 | ||
18095 | /* DWARF version 2 has no clean way to discern C++ | |
18096 | static and non-static member functions. G++ helps | |
18097 | GDB by marking the first parameter for non-static | |
18098 | member functions (which is the this pointer) as | |
18099 | artificial. We pass this information to | |
18100 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
18101 | ||
18102 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
18103 | 4.5 does not yet generate. */ | |
e142c38c | 18104 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 18105 | if (attr != nullptr) |
c45bc3f8 | 18106 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = attr->as_boolean (); |
c906108c | 18107 | else |
9c37b5ae | 18108 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
18109 | arg_type = die_type (child_die, cu); |
18110 | ||
18111 | /* RealView does not mark THIS as const, which the testsuite | |
18112 | expects. GCC marks THIS as const in method definitions, | |
18113 | but not in the class specifications (GCC PR 43053). */ | |
18114 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
18115 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
18116 | { | |
18117 | int is_this = 0; | |
18118 | struct dwarf2_cu *arg_cu = cu; | |
18119 | const char *name = dwarf2_name (child_die, cu); | |
18120 | ||
18121 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 18122 | if (attr != nullptr) |
3ce3b1ba PA |
18123 | { |
18124 | /* If the compiler emits this, use it. */ | |
18125 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
18126 | is_this = 1; | |
18127 | } | |
18128 | else if (name && strcmp (name, "this") == 0) | |
18129 | /* Function definitions will have the argument names. */ | |
18130 | is_this = 1; | |
18131 | else if (name == NULL && iparams == 0) | |
18132 | /* Declarations may not have the names, so like | |
18133 | elsewhere in GDB, assume an artificial first | |
18134 | argument is "this". */ | |
18135 | is_this = 1; | |
18136 | ||
18137 | if (is_this) | |
18138 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
18139 | arg_type, 0); | |
18140 | } | |
18141 | ||
5d14b6e5 | 18142 | ftype->field (iparams).set_type (arg_type); |
c906108c SS |
18143 | iparams++; |
18144 | } | |
436c571c | 18145 | child_die = child_die->sibling; |
c906108c SS |
18146 | } |
18147 | } | |
18148 | ||
76c10ea2 | 18149 | return ftype; |
c906108c SS |
18150 | } |
18151 | ||
f792889a | 18152 | static struct type * |
e7c27a73 | 18153 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18154 | { |
5e22e966 | 18155 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 18156 | const char *name = NULL; |
3c8e0968 | 18157 | struct type *this_type, *target_type; |
c906108c | 18158 | |
94af9270 | 18159 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc | 18160 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
8f53807e | 18161 | this_type->set_target_is_stub (true); |
f792889a | 18162 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
18163 | target_type = die_type (die, cu); |
18164 | if (target_type != this_type) | |
18165 | TYPE_TARGET_TYPE (this_type) = target_type; | |
18166 | else | |
18167 | { | |
18168 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
18169 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 18170 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
18171 | "- DIE at %s [in module %s]"), |
18172 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
18173 | TYPE_TARGET_TYPE (this_type) = NULL; |
18174 | } | |
e4003a34 TV |
18175 | if (name == NULL) |
18176 | { | |
18177 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
18178 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
18179 | Handle these by just returning the target type, rather than | |
18180 | constructing an anonymous typedef type and trying to handle this | |
18181 | elsewhere. */ | |
18182 | set_die_type (die, target_type, cu); | |
18183 | return target_type; | |
18184 | } | |
f792889a | 18185 | return this_type; |
c906108c SS |
18186 | } |
18187 | ||
09584414 JB |
18188 | /* Assuming DIE is a rational DW_TAG_constant, read the DIE's |
18189 | numerator and denominator into NUMERATOR and DENOMINATOR (resp). | |
18190 | ||
18191 | If the numerator and/or numerator attribute is missing, | |
18192 | a complaint is filed, and NUMERATOR and DENOMINATOR are left | |
18193 | untouched. */ | |
18194 | ||
18195 | static void | |
18196 | get_dwarf2_rational_constant (struct die_info *die, struct dwarf2_cu *cu, | |
18197 | LONGEST *numerator, LONGEST *denominator) | |
18198 | { | |
18199 | struct attribute *num_attr, *denom_attr; | |
18200 | ||
18201 | num_attr = dwarf2_attr (die, DW_AT_GNU_numerator, cu); | |
18202 | if (num_attr == nullptr) | |
18203 | complaint (_("DW_AT_GNU_numerator missing in %s DIE at %s"), | |
18204 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18205 | ||
18206 | denom_attr = dwarf2_attr (die, DW_AT_GNU_denominator, cu); | |
18207 | if (denom_attr == nullptr) | |
18208 | complaint (_("DW_AT_GNU_denominator missing in %s DIE at %s"), | |
18209 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18210 | ||
18211 | if (num_attr == nullptr || denom_attr == nullptr) | |
18212 | return; | |
18213 | ||
18214 | *numerator = num_attr->constant_value (1); | |
18215 | *denominator = denom_attr->constant_value (1); | |
18216 | } | |
18217 | ||
18218 | /* Same as get_dwarf2_rational_constant, but extracting an unsigned | |
18219 | rational constant, rather than a signed one. | |
18220 | ||
18221 | If the rational constant has a negative value, a complaint | |
18222 | is filed, and NUMERATOR and DENOMINATOR are left untouched. */ | |
18223 | ||
18224 | static void | |
18225 | get_dwarf2_unsigned_rational_constant (struct die_info *die, | |
18226 | struct dwarf2_cu *cu, | |
18227 | ULONGEST *numerator, | |
18228 | ULONGEST *denominator) | |
18229 | { | |
18230 | LONGEST num = 1, denom = 1; | |
18231 | ||
18232 | get_dwarf2_rational_constant (die, cu, &num, &denom); | |
18233 | if (num < 0 && denom < 0) | |
18234 | { | |
18235 | num = -num; | |
18236 | denom = -denom; | |
18237 | } | |
18238 | else if (num < 0) | |
18239 | { | |
18240 | complaint (_("unexpected negative value for DW_AT_GNU_numerator" | |
18241 | " in DIE at %s"), | |
18242 | sect_offset_str (die->sect_off)); | |
18243 | return; | |
18244 | } | |
18245 | else if (denom < 0) | |
18246 | { | |
18247 | complaint (_("unexpected negative value for DW_AT_GNU_denominator" | |
18248 | " in DIE at %s"), | |
18249 | sect_offset_str (die->sect_off)); | |
18250 | return; | |
18251 | } | |
18252 | ||
18253 | *numerator = num; | |
18254 | *denominator = denom; | |
18255 | } | |
18256 | ||
18257 | /* Assuming DIE corresponds to a fixed point type, finish the creation | |
2a12c336 | 18258 | of the corresponding TYPE by setting its type-specific data. |
09584414 JB |
18259 | CU is the DIE's CU. */ |
18260 | ||
18261 | static void | |
18262 | finish_fixed_point_type (struct type *type, struct die_info *die, | |
18263 | struct dwarf2_cu *cu) | |
18264 | { | |
18265 | struct attribute *attr; | |
18266 | /* Numerator and denominator of our fixed-point type's scaling factor. | |
18267 | The default is a scaling factor of 1, which we use as a fallback | |
18268 | when we are not able to decode it (problem with the debugging info, | |
18269 | unsupported forms, bug in GDB, etc...). Using that as the default | |
18270 | allows us to at least print the unscaled value, which might still | |
18271 | be useful to a user. */ | |
18272 | ULONGEST scale_num = 1; | |
18273 | ULONGEST scale_denom = 1; | |
18274 | ||
18275 | gdb_assert (type->code () == TYPE_CODE_FIXED_POINT | |
18276 | && TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FIXED_POINT); | |
18277 | ||
18278 | attr = dwarf2_attr (die, DW_AT_binary_scale, cu); | |
18279 | if (!attr) | |
18280 | attr = dwarf2_attr (die, DW_AT_decimal_scale, cu); | |
18281 | if (!attr) | |
18282 | attr = dwarf2_attr (die, DW_AT_small, cu); | |
18283 | ||
18284 | if (attr == nullptr) | |
18285 | { | |
18286 | /* Scaling factor not found. Assume a scaling factor of 1, | |
18287 | and hope for the best. At least the user will be able to see | |
18288 | the encoded value. */ | |
18289 | complaint (_("no scale found for fixed-point type (DIE at %s)"), | |
18290 | sect_offset_str (die->sect_off)); | |
18291 | } | |
18292 | else if (attr->name == DW_AT_binary_scale) | |
18293 | { | |
18294 | LONGEST scale_exp = attr->constant_value (0); | |
18295 | ULONGEST *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; | |
18296 | ||
a43b29c9 | 18297 | *num_or_denom = 1 << std::abs (scale_exp); |
09584414 JB |
18298 | } |
18299 | else if (attr->name == DW_AT_decimal_scale) | |
18300 | { | |
18301 | LONGEST scale_exp = attr->constant_value (0); | |
18302 | ULONGEST *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; | |
18303 | ||
a43b29c9 | 18304 | *num_or_denom = uinteger_pow (10, std::abs (scale_exp)); |
09584414 JB |
18305 | } |
18306 | else if (attr->name == DW_AT_small) | |
18307 | { | |
18308 | struct die_info *scale_die; | |
18309 | struct dwarf2_cu *scale_cu = cu; | |
18310 | ||
18311 | scale_die = follow_die_ref (die, attr, &scale_cu); | |
18312 | if (scale_die->tag == DW_TAG_constant) | |
18313 | get_dwarf2_unsigned_rational_constant (scale_die, scale_cu, | |
18314 | &scale_num, &scale_denom); | |
18315 | else | |
18316 | complaint (_("%s DIE not supported as target of DW_AT_small attribute" | |
18317 | " (DIE at %s)"), | |
18318 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18319 | } | |
18320 | else | |
18321 | { | |
18322 | complaint (_("unsupported scale attribute %s for fixed-point type" | |
18323 | " (DIE at %s)"), | |
18324 | dwarf_attr_name (attr->name), | |
18325 | sect_offset_str (die->sect_off)); | |
18326 | } | |
18327 | ||
2a12c336 | 18328 | gdb_mpq &scaling_factor = type->fixed_point_info ().scaling_factor; |
09584414 JB |
18329 | |
18330 | gdb_mpz tmp_z (scale_num); | |
18331 | mpz_set (mpq_numref (scaling_factor.val), tmp_z.val); | |
18332 | ||
18333 | tmp_z = scale_denom; | |
18334 | mpz_set (mpq_denref (scaling_factor.val), tmp_z.val); | |
18335 | ||
18336 | mpq_canonicalize (scaling_factor.val); | |
18337 | } | |
18338 | ||
9b790ce7 UW |
18339 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
18340 | (which may be different from NAME) to the architecture back-end to allow | |
18341 | it to guess the correct format if necessary. */ | |
18342 | ||
18343 | static struct type * | |
18344 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 18345 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 18346 | { |
08feed99 | 18347 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
18348 | const struct floatformat **format; |
18349 | struct type *type; | |
18350 | ||
18351 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
18352 | if (format) | |
103a685e | 18353 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 18354 | else |
77b7c781 | 18355 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
18356 | |
18357 | return type; | |
18358 | } | |
18359 | ||
eb77c9df AB |
18360 | /* Allocate an integer type of size BITS and name NAME. */ |
18361 | ||
18362 | static struct type * | |
18363 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
18364 | int bits, int unsigned_p, const char *name) | |
18365 | { | |
18366 | struct type *type; | |
18367 | ||
18368 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
18369 | instead of using DW_TAG_unspecified_type. This has been seen on | |
18370 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
18371 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
18372 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
18373 | type = objfile_type (objfile)->builtin_void; |
18374 | else | |
18375 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
18376 | ||
18377 | return type; | |
18378 | } | |
18379 | ||
09584414 JB |
18380 | /* Return true if DIE has a DW_AT_small attribute whose value is |
18381 | a constant rational, where both the numerator and denominator | |
18382 | are equal to zero. | |
18383 | ||
18384 | CU is the DIE's Compilation Unit. */ | |
18385 | ||
18386 | static bool | |
18387 | has_zero_over_zero_small_attribute (struct die_info *die, | |
18388 | struct dwarf2_cu *cu) | |
18389 | { | |
18390 | struct attribute *attr = dwarf2_attr (die, DW_AT_small, cu); | |
18391 | if (attr == nullptr) | |
18392 | return false; | |
18393 | ||
18394 | struct dwarf2_cu *scale_cu = cu; | |
18395 | struct die_info *scale_die | |
18396 | = follow_die_ref (die, attr, &scale_cu); | |
18397 | ||
18398 | if (scale_die->tag != DW_TAG_constant) | |
18399 | return false; | |
18400 | ||
18401 | LONGEST num = 1, denom = 1; | |
18402 | get_dwarf2_rational_constant (scale_die, cu, &num, &denom); | |
18403 | return (num == 0 && denom == 0); | |
18404 | } | |
18405 | ||
8bdc1658 AB |
18406 | /* Initialise and return a floating point type of size BITS suitable for |
18407 | use as a component of a complex number. The NAME_HINT is passed through | |
18408 | when initialising the floating point type and is the name of the complex | |
18409 | type. | |
18410 | ||
18411 | As DWARF doesn't currently provide an explicit name for the components | |
18412 | of a complex number, but it can be helpful to have these components | |
18413 | named, we try to select a suitable name based on the size of the | |
18414 | component. */ | |
18415 | static struct type * | |
18416 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
18417 | struct objfile *objfile, | |
103a685e TT |
18418 | int bits, const char *name_hint, |
18419 | enum bfd_endian byte_order) | |
8bdc1658 | 18420 | { |
08feed99 | 18421 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
18422 | struct type *tt = nullptr; |
18423 | ||
35add35e AB |
18424 | /* Try to find a suitable floating point builtin type of size BITS. |
18425 | We're going to use the name of this type as the name for the complex | |
18426 | target type that we are about to create. */ | |
1db455a7 | 18427 | switch (cu->language) |
8bdc1658 | 18428 | { |
1db455a7 AB |
18429 | case language_fortran: |
18430 | switch (bits) | |
18431 | { | |
18432 | case 32: | |
18433 | tt = builtin_f_type (gdbarch)->builtin_real; | |
18434 | break; | |
18435 | case 64: | |
18436 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
18437 | break; | |
18438 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18439 | case 128: | |
18440 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
18441 | break; | |
18442 | } | |
8bdc1658 | 18443 | break; |
1db455a7 AB |
18444 | default: |
18445 | switch (bits) | |
18446 | { | |
18447 | case 32: | |
18448 | tt = builtin_type (gdbarch)->builtin_float; | |
18449 | break; | |
18450 | case 64: | |
18451 | tt = builtin_type (gdbarch)->builtin_double; | |
18452 | break; | |
18453 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18454 | case 128: | |
18455 | tt = builtin_type (gdbarch)->builtin_long_double; | |
18456 | break; | |
18457 | } | |
8bdc1658 AB |
18458 | break; |
18459 | } | |
18460 | ||
35add35e AB |
18461 | /* If the type we found doesn't match the size we were looking for, then |
18462 | pretend we didn't find a type at all, the complex target type we | |
18463 | create will then be nameless. */ | |
a12e5744 | 18464 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
18465 | tt = nullptr; |
18466 | ||
7d93a1e0 | 18467 | const char *name = (tt == nullptr) ? nullptr : tt->name (); |
103a685e | 18468 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
18469 | } |
18470 | ||
c906108c SS |
18471 | /* Find a representation of a given base type and install |
18472 | it in the TYPE field of the die. */ | |
18473 | ||
f792889a | 18474 | static struct type * |
e7c27a73 | 18475 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18476 | { |
5e22e966 | 18477 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
18478 | struct type *type; |
18479 | struct attribute *attr; | |
19f392bc | 18480 | int encoding = 0, bits = 0; |
15d034d0 | 18481 | const char *name; |
34877895 | 18482 | gdbarch *arch; |
c906108c | 18483 | |
e142c38c | 18484 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
529908cb TT |
18485 | if (attr != nullptr && attr->form_is_constant ()) |
18486 | encoding = attr->constant_value (0); | |
e142c38c | 18487 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 18488 | if (attr != nullptr) |
529908cb | 18489 | bits = attr->constant_value (0) * TARGET_CHAR_BIT; |
39cbfefa | 18490 | name = dwarf2_name (die, cu); |
6ccb9162 | 18491 | if (!name) |
34877895 | 18492 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 18493 | |
08feed99 | 18494 | arch = objfile->arch (); |
103a685e TT |
18495 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
18496 | ||
34877895 | 18497 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
529908cb | 18498 | if (attr != nullptr && attr->form_is_constant ()) |
103a685e | 18499 | { |
529908cb | 18500 | int endianity = attr->constant_value (0); |
103a685e TT |
18501 | |
18502 | switch (endianity) | |
18503 | { | |
18504 | case DW_END_big: | |
18505 | byte_order = BFD_ENDIAN_BIG; | |
18506 | break; | |
18507 | case DW_END_little: | |
18508 | byte_order = BFD_ENDIAN_LITTLE; | |
18509 | break; | |
18510 | default: | |
18511 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
18512 | break; | |
18513 | } | |
18514 | } | |
6ccb9162 | 18515 | |
09584414 JB |
18516 | if ((encoding == DW_ATE_signed_fixed || encoding == DW_ATE_unsigned_fixed) |
18517 | && cu->language == language_ada | |
18518 | && has_zero_over_zero_small_attribute (die, cu)) | |
18519 | { | |
18520 | /* brobecker/2018-02-24: This is a fixed point type for which | |
18521 | the scaling factor is represented as fraction whose value | |
18522 | does not make sense (zero divided by zero), so we should | |
18523 | normally never see these. However, there is a small category | |
18524 | of fixed point types for which GNAT is unable to provide | |
18525 | the scaling factor via the standard DWARF mechanisms, and | |
18526 | for which the info is provided via the GNAT encodings instead. | |
18527 | This is likely what this DIE is about. | |
18528 | ||
18529 | Ideally, GNAT should be declaring this type the same way | |
18530 | it declares other fixed point types when using the legacy | |
18531 | GNAT encoding, which is to use a simple signed or unsigned | |
18532 | base type. A report to the GNAT team has been created to | |
18533 | look into it. In the meantime, pretend this type is a simple | |
18534 | signed or unsigned integral, rather than a fixed point type, | |
18535 | to avoid any confusion later on as to how to process this type. */ | |
18536 | encoding = (encoding == DW_ATE_signed_fixed | |
18537 | ? DW_ATE_signed | |
18538 | : DW_ATE_unsigned); | |
18539 | } | |
18540 | ||
6ccb9162 | 18541 | switch (encoding) |
c906108c | 18542 | { |
6ccb9162 UW |
18543 | case DW_ATE_address: |
18544 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 18545 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 18546 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
18547 | break; |
18548 | case DW_ATE_boolean: | |
19f392bc | 18549 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
18550 | break; |
18551 | case DW_ATE_complex_float: | |
103a685e TT |
18552 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
18553 | byte_order); | |
78134374 | 18554 | if (type->code () == TYPE_CODE_ERROR) |
93689ce9 TT |
18555 | { |
18556 | if (name == nullptr) | |
18557 | { | |
18558 | struct obstack *obstack | |
5e22e966 | 18559 | = &cu->per_objfile->objfile->objfile_obstack; |
7d93a1e0 | 18560 | name = obconcat (obstack, "_Complex ", type->name (), |
93689ce9 TT |
18561 | nullptr); |
18562 | } | |
18563 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
18564 | } | |
18565 | else | |
18566 | type = init_complex_type (name, type); | |
6ccb9162 UW |
18567 | break; |
18568 | case DW_ATE_decimal_float: | |
19f392bc | 18569 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
18570 | break; |
18571 | case DW_ATE_float: | |
103a685e | 18572 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
18573 | break; |
18574 | case DW_ATE_signed: | |
eb77c9df | 18575 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18576 | break; |
18577 | case DW_ATE_unsigned: | |
3b2b8fea TT |
18578 | if (cu->language == language_fortran |
18579 | && name | |
61012eef | 18580 | && startswith (name, "character(")) |
19f392bc UW |
18581 | type = init_character_type (objfile, bits, 1, name); |
18582 | else | |
eb77c9df | 18583 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
18584 | break; |
18585 | case DW_ATE_signed_char: | |
6e70227d | 18586 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
18587 | || cu->language == language_pascal |
18588 | || cu->language == language_fortran) | |
19f392bc UW |
18589 | type = init_character_type (objfile, bits, 0, name); |
18590 | else | |
eb77c9df | 18591 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18592 | break; |
18593 | case DW_ATE_unsigned_char: | |
868a0084 | 18594 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 18595 | || cu->language == language_pascal |
c44af4eb TT |
18596 | || cu->language == language_fortran |
18597 | || cu->language == language_rust) | |
19f392bc UW |
18598 | type = init_character_type (objfile, bits, 1, name); |
18599 | else | |
eb77c9df | 18600 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 18601 | break; |
75079b2b | 18602 | case DW_ATE_UTF: |
53e710ac | 18603 | { |
53e710ac PA |
18604 | if (bits == 16) |
18605 | type = builtin_type (arch)->builtin_char16; | |
18606 | else if (bits == 32) | |
18607 | type = builtin_type (arch)->builtin_char32; | |
18608 | else | |
18609 | { | |
b98664d3 | 18610 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 18611 | bits); |
eb77c9df | 18612 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
18613 | } |
18614 | return set_die_type (die, type, cu); | |
18615 | } | |
75079b2b | 18616 | break; |
09584414 JB |
18617 | case DW_ATE_signed_fixed: |
18618 | type = init_fixed_point_type (objfile, bits, 0, name); | |
18619 | finish_fixed_point_type (type, die, cu); | |
18620 | break; | |
18621 | case DW_ATE_unsigned_fixed: | |
18622 | type = init_fixed_point_type (objfile, bits, 1, name); | |
18623 | finish_fixed_point_type (type, die, cu); | |
18624 | break; | |
75079b2b | 18625 | |
6ccb9162 | 18626 | default: |
b98664d3 | 18627 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 18628 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 18629 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 18630 | break; |
c906108c | 18631 | } |
6ccb9162 | 18632 | |
0114d602 | 18633 | if (name && strcmp (name, "char") == 0) |
15152a54 | 18634 | type->set_has_no_signedness (true); |
0114d602 | 18635 | |
2b4424c3 TT |
18636 | maybe_set_alignment (cu, die, type); |
18637 | ||
db558e34 | 18638 | type->set_endianity_is_not_default (gdbarch_byte_order (arch) != byte_order); |
34877895 | 18639 | |
20a5fcbd TT |
18640 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_INT) |
18641 | { | |
18642 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); | |
529908cb | 18643 | if (attr != nullptr && attr->as_unsigned () <= 8 * TYPE_LENGTH (type)) |
20a5fcbd | 18644 | { |
529908cb | 18645 | unsigned real_bit_size = attr->as_unsigned (); |
20a5fcbd TT |
18646 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
18647 | /* Only use the attributes if they make sense together. */ | |
18648 | if (attr == nullptr | |
529908cb TT |
18649 | || (attr->as_unsigned () + real_bit_size |
18650 | <= 8 * TYPE_LENGTH (type))) | |
20a5fcbd TT |
18651 | { |
18652 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_size | |
18653 | = real_bit_size; | |
18654 | if (attr != nullptr) | |
18655 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_offset | |
529908cb | 18656 | = attr->as_unsigned (); |
20a5fcbd TT |
18657 | } |
18658 | } | |
18659 | } | |
18660 | ||
f792889a | 18661 | return set_die_type (die, type, cu); |
c906108c SS |
18662 | } |
18663 | ||
80180f79 SA |
18664 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
18665 | resulting value of the attribute into struct bound_prop. | |
18666 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
18667 | ||
18668 | static int | |
18669 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
18670 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
18671 | struct type *default_type) | |
80180f79 SA |
18672 | { |
18673 | struct dwarf2_property_baton *baton; | |
5e22e966 | 18674 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba TT |
18675 | struct objfile *objfile = per_objfile->objfile; |
18676 | struct obstack *obstack = &objfile->objfile_obstack; | |
80180f79 | 18677 | |
9a49df9d AB |
18678 | gdb_assert (default_type != NULL); |
18679 | ||
80180f79 SA |
18680 | if (attr == NULL || prop == NULL) |
18681 | return 0; | |
18682 | ||
4fc6c0d5 | 18683 | if (attr->form_is_block ()) |
80180f79 | 18684 | { |
8d749320 | 18685 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18686 | baton->property_type = default_type; |
80180f79 | 18687 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18688 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18689 | |
18690 | struct dwarf_block *block = attr->as_block (); | |
18691 | baton->locexpr.size = block->size; | |
18692 | baton->locexpr.data = block->data; | |
216a7e6b AB |
18693 | switch (attr->name) |
18694 | { | |
18695 | case DW_AT_string_length: | |
18696 | baton->locexpr.is_reference = true; | |
18697 | break; | |
18698 | default: | |
18699 | baton->locexpr.is_reference = false; | |
18700 | break; | |
18701 | } | |
8c2e4e06 SM |
18702 | |
18703 | prop->set_locexpr (baton); | |
18704 | gdb_assert (prop->baton () != NULL); | |
80180f79 | 18705 | } |
cd6c91b4 | 18706 | else if (attr->form_is_ref ()) |
80180f79 SA |
18707 | { |
18708 | struct dwarf2_cu *target_cu = cu; | |
18709 | struct die_info *target_die; | |
18710 | struct attribute *target_attr; | |
18711 | ||
18712 | target_die = follow_die_ref (die, attr, &target_cu); | |
18713 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
18714 | if (target_attr == NULL) |
18715 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
18716 | target_cu); | |
80180f79 SA |
18717 | if (target_attr == NULL) |
18718 | return 0; | |
18719 | ||
df25ebbd | 18720 | switch (target_attr->name) |
80180f79 | 18721 | { |
df25ebbd | 18722 | case DW_AT_location: |
cd6c91b4 | 18723 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 18724 | { |
8d749320 | 18725 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18726 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18727 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
8c2e4e06 SM |
18728 | prop->set_loclist (baton); |
18729 | gdb_assert (prop->baton () != NULL); | |
df25ebbd | 18730 | } |
4fc6c0d5 | 18731 | else if (target_attr->form_is_block ()) |
df25ebbd | 18732 | { |
8d749320 | 18733 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18734 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18735 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18736 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18737 | struct dwarf_block *block = target_attr->as_block (); |
18738 | baton->locexpr.size = block->size; | |
18739 | baton->locexpr.data = block->data; | |
9a49df9d | 18740 | baton->locexpr.is_reference = true; |
8c2e4e06 SM |
18741 | prop->set_locexpr (baton); |
18742 | gdb_assert (prop->baton () != NULL); | |
df25ebbd JB |
18743 | } |
18744 | else | |
18745 | { | |
18746 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
18747 | "dynamic property"); | |
18748 | return 0; | |
18749 | } | |
18750 | break; | |
18751 | case DW_AT_data_member_location: | |
18752 | { | |
18753 | LONGEST offset; | |
18754 | ||
18755 | if (!handle_data_member_location (target_die, target_cu, | |
18756 | &offset)) | |
18757 | return 0; | |
18758 | ||
8d749320 | 18759 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18760 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 18761 | target_cu); |
df25ebbd JB |
18762 | baton->offset_info.offset = offset; |
18763 | baton->offset_info.type = die_type (target_die, target_cu); | |
8c2e4e06 | 18764 | prop->set_addr_offset (baton); |
df25ebbd JB |
18765 | break; |
18766 | } | |
80180f79 SA |
18767 | } |
18768 | } | |
cd6c91b4 | 18769 | else if (attr->form_is_constant ()) |
8c2e4e06 | 18770 | prop->set_const_val (attr->constant_value (0)); |
80180f79 SA |
18771 | else |
18772 | { | |
18773 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
18774 | dwarf2_name (die, cu)); | |
18775 | return 0; | |
18776 | } | |
18777 | ||
18778 | return 1; | |
18779 | } | |
18780 | ||
09ba997f | 18781 | /* See read.h. */ |
9a49df9d | 18782 | |
09ba997f | 18783 | struct type * |
293e7e51 | 18784 | dwarf2_per_objfile::int_type (int size_in_bytes, bool unsigned_p) const |
9a49df9d | 18785 | { |
9a49df9d AB |
18786 | struct type *int_type; |
18787 | ||
18788 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
18789 | #define TRY_TYPE(F) \ |
18790 | int_type = (unsigned_p \ | |
18791 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
18792 | : objfile_type (objfile)->builtin_ ## F); \ | |
18793 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
18794 | return int_type |
18795 | ||
18796 | TRY_TYPE (char); | |
18797 | TRY_TYPE (short); | |
18798 | TRY_TYPE (int); | |
18799 | TRY_TYPE (long); | |
18800 | TRY_TYPE (long_long); | |
18801 | ||
18802 | #undef TRY_TYPE | |
18803 | ||
18804 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
18805 | } | |
18806 | ||
09ba997f | 18807 | /* See read.h. */ |
11a8b164 | 18808 | |
09ba997f | 18809 | struct type * |
293e7e51 | 18810 | dwarf2_cu::addr_sized_int_type (bool unsigned_p) const |
11a8b164 | 18811 | { |
293e7e51 SM |
18812 | int addr_size = this->per_cu->addr_size (); |
18813 | return this->per_objfile->int_type (addr_size, unsigned_p); | |
11a8b164 AB |
18814 | } |
18815 | ||
b86352cf AB |
18816 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
18817 | present (which is valid) then compute the default type based on the | |
18818 | compilation units address size. */ | |
18819 | ||
18820 | static struct type * | |
18821 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
18822 | { | |
18823 | struct type *index_type = die_type (die, cu); | |
18824 | ||
18825 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
18826 | without specifying a base type. | |
18827 | In that case, the base type must be set to the type of | |
18828 | the lower bound, upper bound or count, in that order, if any of these | |
18829 | three attributes references an object that has a type. | |
18830 | If no base type is found, the Dwarf-2 specifications say that | |
18831 | a signed integer type of size equal to the size of an address should | |
18832 | be used. | |
18833 | For the following C code: `extern char gdb_int [];' | |
18834 | GCC produces an empty range DIE. | |
18835 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
18836 | high bound or count are not yet handled by this code. */ | |
78134374 | 18837 | if (index_type->code () == TYPE_CODE_VOID) |
293e7e51 | 18838 | index_type = cu->addr_sized_int_type (false); |
b86352cf AB |
18839 | |
18840 | return index_type; | |
18841 | } | |
18842 | ||
a02abb62 JB |
18843 | /* Read the given DW_AT_subrange DIE. */ |
18844 | ||
f792889a | 18845 | static struct type * |
a02abb62 JB |
18846 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
18847 | { | |
4c9ad8c2 | 18848 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
18849 | struct type *range_type; |
18850 | struct attribute *attr; | |
729efb13 | 18851 | struct dynamic_prop low, high; |
4fae6e18 | 18852 | int low_default_is_valid; |
c451ebe5 | 18853 | int high_bound_is_count = 0; |
15d034d0 | 18854 | const char *name; |
d359392f | 18855 | ULONGEST negative_mask; |
e77813c8 | 18856 | |
b86352cf AB |
18857 | orig_base_type = read_subrange_index_type (die, cu); |
18858 | ||
4c9ad8c2 TT |
18859 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
18860 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
18861 | creating the range type, but we use the result of check_typedef | |
18862 | when examining properties of the type. */ | |
18863 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 18864 | |
7e314c57 JK |
18865 | /* The die_type call above may have already set the type for this DIE. */ |
18866 | range_type = get_die_type (die, cu); | |
18867 | if (range_type) | |
18868 | return range_type; | |
18869 | ||
8c2e4e06 | 18870 | high.set_const_val (0); |
729efb13 | 18871 | |
4fae6e18 JK |
18872 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
18873 | omitting DW_AT_lower_bound. */ | |
18874 | switch (cu->language) | |
6e70227d | 18875 | { |
4fae6e18 JK |
18876 | case language_c: |
18877 | case language_cplus: | |
8c2e4e06 | 18878 | low.set_const_val (0); |
4fae6e18 JK |
18879 | low_default_is_valid = 1; |
18880 | break; | |
18881 | case language_fortran: | |
8c2e4e06 | 18882 | low.set_const_val (1); |
4fae6e18 JK |
18883 | low_default_is_valid = 1; |
18884 | break; | |
18885 | case language_d: | |
4fae6e18 | 18886 | case language_objc: |
c44af4eb | 18887 | case language_rust: |
8c2e4e06 | 18888 | low.set_const_val (0); |
4fae6e18 JK |
18889 | low_default_is_valid = (cu->header.version >= 4); |
18890 | break; | |
18891 | case language_ada: | |
18892 | case language_m2: | |
18893 | case language_pascal: | |
8c2e4e06 | 18894 | low.set_const_val (1); |
4fae6e18 JK |
18895 | low_default_is_valid = (cu->header.version >= 4); |
18896 | break; | |
18897 | default: | |
8c2e4e06 | 18898 | low.set_const_val (0); |
4fae6e18 JK |
18899 | low_default_is_valid = 0; |
18900 | break; | |
a02abb62 JB |
18901 | } |
18902 | ||
e142c38c | 18903 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 18904 | if (attr != nullptr) |
9a49df9d | 18905 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 18906 | else if (!low_default_is_valid) |
b98664d3 | 18907 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
18908 | "- DIE at %s [in module %s]"), |
18909 | sect_offset_str (die->sect_off), | |
5e22e966 | 18910 | objfile_name (cu->per_objfile->objfile)); |
a02abb62 | 18911 | |
506f5c41 TV |
18912 | struct attribute *attr_ub, *attr_count; |
18913 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 18914 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 18915 | { |
506f5c41 | 18916 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 18917 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 18918 | { |
c451ebe5 | 18919 | /* If bounds are constant do the final calculation here. */ |
8c2e4e06 SM |
18920 | if (low.kind () == PROP_CONST && high.kind () == PROP_CONST) |
18921 | high.set_const_val (low.const_val () + high.const_val () - 1); | |
c451ebe5 SA |
18922 | else |
18923 | high_bound_is_count = 1; | |
c2ff108b | 18924 | } |
506f5c41 TV |
18925 | else |
18926 | { | |
18927 | if (attr_ub != NULL) | |
18928 | complaint (_("Unresolved DW_AT_upper_bound " | |
18929 | "- DIE at %s [in module %s]"), | |
18930 | sect_offset_str (die->sect_off), | |
5e22e966 | 18931 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 TV |
18932 | if (attr_count != NULL) |
18933 | complaint (_("Unresolved DW_AT_count " | |
18934 | "- DIE at %s [in module %s]"), | |
18935 | sect_offset_str (die->sect_off), | |
5e22e966 | 18936 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 | 18937 | } |
e77813c8 | 18938 | } |
a02abb62 | 18939 | |
4e962e74 TT |
18940 | LONGEST bias = 0; |
18941 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 18942 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 18943 | bias = bias_attr->constant_value (0); |
4e962e74 | 18944 | |
dbb9c2b1 JB |
18945 | /* Normally, the DWARF producers are expected to use a signed |
18946 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
18947 | But this is unfortunately not always the case, as witnessed | |
18948 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
18949 | is used instead. To work around that ambiguity, we treat | |
18950 | the bounds as signed, and thus sign-extend their values, when | |
18951 | the base type is signed. */ | |
6e70227d | 18952 | negative_mask = |
d359392f | 18953 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
8c2e4e06 | 18954 | if (low.kind () == PROP_CONST |
c6d940a9 | 18955 | && !base_type->is_unsigned () && (low.const_val () & negative_mask)) |
8c2e4e06 SM |
18956 | low.set_const_val (low.const_val () | negative_mask); |
18957 | if (high.kind () == PROP_CONST | |
c6d940a9 | 18958 | && !base_type->is_unsigned () && (high.const_val () & negative_mask)) |
8c2e4e06 | 18959 | high.set_const_val (high.const_val () | negative_mask); |
43bbcdc2 | 18960 | |
5bbd8269 AB |
18961 | /* Check for bit and byte strides. */ |
18962 | struct dynamic_prop byte_stride_prop; | |
18963 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
18964 | if (attr_byte_stride != nullptr) | |
18965 | { | |
293e7e51 | 18966 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
18967 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
18968 | prop_type); | |
18969 | } | |
18970 | ||
18971 | struct dynamic_prop bit_stride_prop; | |
18972 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
18973 | if (attr_bit_stride != nullptr) | |
18974 | { | |
18975 | /* It only makes sense to have either a bit or byte stride. */ | |
18976 | if (attr_byte_stride != nullptr) | |
18977 | { | |
18978 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
18979 | "- DIE at %s [in module %s]"), | |
18980 | sect_offset_str (die->sect_off), | |
5e22e966 | 18981 | objfile_name (cu->per_objfile->objfile)); |
5bbd8269 AB |
18982 | attr_bit_stride = nullptr; |
18983 | } | |
18984 | else | |
18985 | { | |
293e7e51 | 18986 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
18987 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
18988 | prop_type); | |
18989 | } | |
18990 | } | |
18991 | ||
18992 | if (attr_byte_stride != nullptr | |
18993 | || attr_bit_stride != nullptr) | |
18994 | { | |
18995 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
18996 | struct dynamic_prop *stride | |
18997 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
18998 | ||
18999 | range_type | |
19000 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
19001 | &high, bias, stride, byte_stride_p); | |
19002 | } | |
19003 | else | |
19004 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 19005 | |
c451ebe5 | 19006 | if (high_bound_is_count) |
599088e3 | 19007 | range_type->bounds ()->flag_upper_bound_is_count = 1; |
c451ebe5 | 19008 | |
c2ff108b JK |
19009 | /* Ada expects an empty array on no boundary attributes. */ |
19010 | if (attr == NULL && cu->language != language_ada) | |
8c2e4e06 | 19011 | range_type->bounds ()->high.set_undefined (); |
c2ff108b | 19012 | |
39cbfefa DJ |
19013 | name = dwarf2_name (die, cu); |
19014 | if (name) | |
d0e39ea2 | 19015 | range_type->set_name (name); |
6e70227d | 19016 | |
e142c38c | 19017 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 19018 | if (attr != nullptr) |
529908cb | 19019 | TYPE_LENGTH (range_type) = attr->constant_value (0); |
a02abb62 | 19020 | |
2b4424c3 TT |
19021 | maybe_set_alignment (cu, die, range_type); |
19022 | ||
7e314c57 JK |
19023 | set_die_type (die, range_type, cu); |
19024 | ||
19025 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
19026 | set_descriptive_type (range_type, die, cu); |
19027 | ||
7e314c57 | 19028 | return range_type; |
a02abb62 | 19029 | } |
6e70227d | 19030 | |
f792889a | 19031 | static struct type * |
81a17f79 JB |
19032 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
19033 | { | |
19034 | struct type *type; | |
81a17f79 | 19035 | |
5e22e966 | 19036 | type = init_type (cu->per_objfile->objfile, TYPE_CODE_VOID, 0, NULL); |
d0e39ea2 | 19037 | type->set_name (dwarf2_name (die, cu)); |
81a17f79 | 19038 | |
74a2f8ff | 19039 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 19040 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
19041 | such a type, we treat it as a stub, and try to resolve it later on, |
19042 | when needed. */ | |
19043 | if (cu->language == language_ada) | |
b4b73759 | 19044 | type->set_is_stub (true); |
74a2f8ff | 19045 | |
f792889a | 19046 | return set_die_type (die, type, cu); |
81a17f79 | 19047 | } |
a02abb62 | 19048 | |
639d11d3 DC |
19049 | /* Read a single die and all its descendents. Set the die's sibling |
19050 | field to NULL; set other fields in the die correctly, and set all | |
19051 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
19052 | location of the info_ptr after reading all of those dies. PARENT | |
19053 | is the parent of the die in question. */ | |
19054 | ||
19055 | static struct die_info * | |
dee91e82 | 19056 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
19057 | const gdb_byte *info_ptr, |
19058 | const gdb_byte **new_info_ptr, | |
dee91e82 | 19059 | struct die_info *parent) |
639d11d3 DC |
19060 | { |
19061 | struct die_info *die; | |
d521ce57 | 19062 | const gdb_byte *cur_ptr; |
639d11d3 | 19063 | |
3e225074 | 19064 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
19065 | if (die == NULL) |
19066 | { | |
19067 | *new_info_ptr = cur_ptr; | |
19068 | return NULL; | |
19069 | } | |
93311388 | 19070 | store_in_ref_table (die, reader->cu); |
639d11d3 | 19071 | |
3e225074 | 19072 | if (die->has_children) |
bf6af496 | 19073 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
19074 | else |
19075 | { | |
19076 | die->child = NULL; | |
19077 | *new_info_ptr = cur_ptr; | |
19078 | } | |
19079 | ||
19080 | die->sibling = NULL; | |
19081 | die->parent = parent; | |
19082 | return die; | |
19083 | } | |
19084 | ||
19085 | /* Read a die, all of its descendents, and all of its siblings; set | |
19086 | all of the fields of all of the dies correctly. Arguments are as | |
19087 | in read_die_and_children. */ | |
19088 | ||
19089 | static struct die_info * | |
bf6af496 | 19090 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
19091 | const gdb_byte *info_ptr, |
19092 | const gdb_byte **new_info_ptr, | |
bf6af496 | 19093 | struct die_info *parent) |
639d11d3 DC |
19094 | { |
19095 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 19096 | const gdb_byte *cur_ptr; |
639d11d3 | 19097 | |
c906108c | 19098 | cur_ptr = info_ptr; |
639d11d3 DC |
19099 | first_die = last_sibling = NULL; |
19100 | ||
19101 | while (1) | |
c906108c | 19102 | { |
639d11d3 | 19103 | struct die_info *die |
dee91e82 | 19104 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 19105 | |
1d325ec1 | 19106 | if (die == NULL) |
c906108c | 19107 | { |
639d11d3 DC |
19108 | *new_info_ptr = cur_ptr; |
19109 | return first_die; | |
c906108c | 19110 | } |
1d325ec1 DJ |
19111 | |
19112 | if (!first_die) | |
19113 | first_die = die; | |
c906108c | 19114 | else |
1d325ec1 DJ |
19115 | last_sibling->sibling = die; |
19116 | ||
19117 | last_sibling = die; | |
c906108c | 19118 | } |
c906108c SS |
19119 | } |
19120 | ||
bf6af496 DE |
19121 | /* Read a die, all of its descendents, and all of its siblings; set |
19122 | all of the fields of all of the dies correctly. Arguments are as | |
19123 | in read_die_and_children. | |
19124 | This the main entry point for reading a DIE and all its children. */ | |
19125 | ||
19126 | static struct die_info * | |
19127 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
19128 | const gdb_byte *info_ptr, |
19129 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
19130 | struct die_info *parent) |
19131 | { | |
19132 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
19133 | new_info_ptr, parent); | |
19134 | ||
b4f54984 | 19135 | if (dwarf_die_debug) |
bf6af496 DE |
19136 | { |
19137 | fprintf_unfiltered (gdb_stdlog, | |
19138 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 19139 | reader->die_section->get_name (), |
bf6af496 DE |
19140 | (unsigned) (info_ptr - reader->die_section->buffer), |
19141 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 19142 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
19143 | } |
19144 | ||
19145 | return die; | |
19146 | } | |
19147 | ||
3019eac3 DE |
19148 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
19149 | attributes. | |
19150 | The caller is responsible for filling in the extra attributes | |
19151 | and updating (*DIEP)->num_attrs. | |
19152 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 19153 | except for its child, sibling, and parent fields. */ |
93311388 | 19154 | |
d521ce57 | 19155 | static const gdb_byte * |
3019eac3 | 19156 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 19157 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 19158 | int num_extra_attrs) |
93311388 | 19159 | { |
b64f50a1 | 19160 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
19161 | struct abbrev_info *abbrev; |
19162 | struct die_info *die; | |
19163 | struct dwarf2_cu *cu = reader->cu; | |
19164 | bfd *abfd = reader->abfd; | |
19165 | ||
9c541725 | 19166 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
19167 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19168 | info_ptr += bytes_read; | |
19169 | if (!abbrev_number) | |
19170 | { | |
19171 | *diep = NULL; | |
93311388 DE |
19172 | return info_ptr; |
19173 | } | |
19174 | ||
685af9cd | 19175 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 19176 | if (!abbrev) |
348e048f DE |
19177 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
19178 | abbrev_number, | |
19179 | bfd_get_filename (abfd)); | |
19180 | ||
3019eac3 | 19181 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 19182 | die->sect_off = sect_off; |
93311388 DE |
19183 | die->tag = abbrev->tag; |
19184 | die->abbrev = abbrev_number; | |
3e225074 | 19185 | die->has_children = abbrev->has_children; |
93311388 | 19186 | |
3019eac3 DE |
19187 | /* Make the result usable. |
19188 | The caller needs to update num_attrs after adding the extra | |
19189 | attributes. */ | |
93311388 DE |
19190 | die->num_attrs = abbrev->num_attrs; |
19191 | ||
7a5f294d | 19192 | bool any_need_reprocess = false; |
93311388 | 19193 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e | 19194 | { |
7a5f294d TT |
19195 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
19196 | info_ptr); | |
19197 | if (die->attrs[i].requires_reprocessing_p ()) | |
19198 | any_need_reprocess = true; | |
18a8505e AT |
19199 | } |
19200 | ||
052c8bb8 | 19201 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
529908cb TT |
19202 | if (attr != nullptr && attr->form_is_unsigned ()) |
19203 | cu->str_offsets_base = attr->as_unsigned (); | |
93311388 | 19204 | |
41144253 | 19205 | attr = die->attr (DW_AT_loclists_base); |
19206 | if (attr != nullptr) | |
529908cb | 19207 | cu->loclist_base = attr->as_unsigned (); |
41144253 | 19208 | |
a39fdb41 | 19209 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
19210 | if (maybe_addr_base.has_value ()) |
19211 | cu->addr_base = *maybe_addr_base; | |
d0ce17d8 CT |
19212 | |
19213 | attr = die->attr (DW_AT_rnglists_base); | |
19214 | if (attr != nullptr) | |
529908cb | 19215 | cu->ranges_base = attr->as_unsigned (); |
d0ce17d8 | 19216 | |
7a5f294d TT |
19217 | if (any_need_reprocess) |
19218 | { | |
19219 | for (i = 0; i < abbrev->num_attrs; ++i) | |
19220 | { | |
19221 | if (die->attrs[i].requires_reprocessing_p ()) | |
19222 | read_attribute_reprocess (reader, &die->attrs[i], die->tag); | |
19223 | } | |
19224 | } | |
93311388 | 19225 | *diep = die; |
93311388 DE |
19226 | return info_ptr; |
19227 | } | |
19228 | ||
3019eac3 DE |
19229 | /* Read a die and all its attributes. |
19230 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 19231 | except for its child, sibling, and parent fields. */ |
3019eac3 | 19232 | |
d521ce57 | 19233 | static const gdb_byte * |
3019eac3 | 19234 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 19235 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 19236 | { |
d521ce57 | 19237 | const gdb_byte *result; |
bf6af496 | 19238 | |
3e225074 | 19239 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 19240 | |
b4f54984 | 19241 | if (dwarf_die_debug) |
bf6af496 DE |
19242 | { |
19243 | fprintf_unfiltered (gdb_stdlog, | |
19244 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 19245 | reader->die_section->get_name (), |
bf6af496 DE |
19246 | (unsigned) (info_ptr - reader->die_section->buffer), |
19247 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 19248 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
19249 | } |
19250 | ||
19251 | return result; | |
3019eac3 | 19252 | } |
433df2d4 | 19253 | \f |
c906108c | 19254 | |
72bf9492 DJ |
19255 | /* Returns nonzero if TAG represents a type that we might generate a partial |
19256 | symbol for. */ | |
19257 | ||
19258 | static int | |
d8f62e84 | 19259 | is_type_tag_for_partial (int tag, enum language lang) |
72bf9492 DJ |
19260 | { |
19261 | switch (tag) | |
19262 | { | |
19263 | #if 0 | |
19264 | /* Some types that would be reasonable to generate partial symbols for, | |
d8f62e84 TT |
19265 | that we don't at present. Note that normally this does not |
19266 | matter, mainly because C compilers don't give names to these | |
19267 | types, but instead emit DW_TAG_typedef. */ | |
72bf9492 DJ |
19268 | case DW_TAG_file_type: |
19269 | case DW_TAG_ptr_to_member_type: | |
19270 | case DW_TAG_set_type: | |
19271 | case DW_TAG_string_type: | |
19272 | case DW_TAG_subroutine_type: | |
19273 | #endif | |
d8f62e84 TT |
19274 | |
19275 | /* GNAT may emit an array with a name, but no typedef, so we | |
19276 | need to make a symbol in this case. */ | |
19277 | case DW_TAG_array_type: | |
19278 | return lang == language_ada; | |
19279 | ||
72bf9492 DJ |
19280 | case DW_TAG_base_type: |
19281 | case DW_TAG_class_type: | |
680b30c7 | 19282 | case DW_TAG_interface_type: |
72bf9492 DJ |
19283 | case DW_TAG_enumeration_type: |
19284 | case DW_TAG_structure_type: | |
19285 | case DW_TAG_subrange_type: | |
19286 | case DW_TAG_typedef: | |
19287 | case DW_TAG_union_type: | |
19288 | return 1; | |
19289 | default: | |
19290 | return 0; | |
19291 | } | |
19292 | } | |
19293 | ||
19294 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
19295 | ||
19296 | static struct partial_die_info * | |
dee91e82 | 19297 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 19298 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 19299 | { |
dee91e82 | 19300 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 19301 | struct objfile *objfile = cu->per_objfile->objfile; |
72bf9492 | 19302 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 19303 | unsigned int bytes_read; |
5afb4e99 | 19304 | unsigned int load_all = 0; |
72bf9492 DJ |
19305 | int nesting_level = 1; |
19306 | ||
19307 | parent_die = NULL; | |
19308 | last_die = NULL; | |
19309 | ||
7adf1e79 DE |
19310 | gdb_assert (cu->per_cu != NULL); |
19311 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
19312 | load_all = 1; |
19313 | ||
72bf9492 DJ |
19314 | cu->partial_dies |
19315 | = htab_create_alloc_ex (cu->header.length / 12, | |
19316 | partial_die_hash, | |
19317 | partial_die_eq, | |
19318 | NULL, | |
19319 | &cu->comp_unit_obstack, | |
19320 | hashtab_obstack_allocate, | |
19321 | dummy_obstack_deallocate); | |
19322 | ||
72bf9492 DJ |
19323 | while (1) |
19324 | { | |
685af9cd | 19325 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
19326 | |
19327 | /* A NULL abbrev means the end of a series of children. */ | |
19328 | if (abbrev == NULL) | |
19329 | { | |
19330 | if (--nesting_level == 0) | |
cd9983dd YQ |
19331 | return first_die; |
19332 | ||
72bf9492 DJ |
19333 | info_ptr += bytes_read; |
19334 | last_die = parent_die; | |
19335 | parent_die = parent_die->die_parent; | |
19336 | continue; | |
19337 | } | |
19338 | ||
98bfdba5 PA |
19339 | /* Check for template arguments. We never save these; if |
19340 | they're seen, we just mark the parent, and go on our way. */ | |
19341 | if (parent_die != NULL | |
19342 | && cu->language == language_cplus | |
19343 | && (abbrev->tag == DW_TAG_template_type_param | |
19344 | || abbrev->tag == DW_TAG_template_value_param)) | |
19345 | { | |
19346 | parent_die->has_template_arguments = 1; | |
19347 | ||
19348 | if (!load_all) | |
19349 | { | |
19350 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 19351 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19352 | continue; |
19353 | } | |
19354 | } | |
19355 | ||
0d99eb77 | 19356 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
19357 | Skip their other children. */ |
19358 | if (!load_all | |
19359 | && cu->language == language_cplus | |
19360 | && parent_die != NULL | |
f9b5d5ea TV |
19361 | && parent_die->tag == DW_TAG_subprogram |
19362 | && abbrev->tag != DW_TAG_inlined_subroutine) | |
98bfdba5 | 19363 | { |
dee91e82 | 19364 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19365 | continue; |
19366 | } | |
19367 | ||
5afb4e99 DJ |
19368 | /* Check whether this DIE is interesting enough to save. Normally |
19369 | we would not be interested in members here, but there may be | |
19370 | later variables referencing them via DW_AT_specification (for | |
19371 | static members). */ | |
19372 | if (!load_all | |
d8f62e84 | 19373 | && !is_type_tag_for_partial (abbrev->tag, cu->language) |
72929c62 | 19374 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
19375 | && abbrev->tag != DW_TAG_enumerator |
19376 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 19377 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 19378 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 19379 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 19380 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 19381 | && abbrev->tag != DW_TAG_module |
95554aad | 19382 | && abbrev->tag != DW_TAG_member |
74921315 KS |
19383 | && abbrev->tag != DW_TAG_imported_unit |
19384 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
19385 | { |
19386 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19387 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
19388 | continue; |
19389 | } | |
19390 | ||
6f06d47b YQ |
19391 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
19392 | abbrev); | |
cd9983dd | 19393 | |
48fbe735 | 19394 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
19395 | |
19396 | /* This two-pass algorithm for processing partial symbols has a | |
19397 | high cost in cache pressure. Thus, handle some simple cases | |
19398 | here which cover the majority of C partial symbols. DIEs | |
19399 | which neither have specification tags in them, nor could have | |
19400 | specification tags elsewhere pointing at them, can simply be | |
19401 | processed and discarded. | |
19402 | ||
19403 | This segment is also optional; scan_partial_symbols and | |
19404 | add_partial_symbol will handle these DIEs if we chain | |
19405 | them in normally. When compilers which do not emit large | |
19406 | quantities of duplicate debug information are more common, | |
19407 | this code can probably be removed. */ | |
19408 | ||
19409 | /* Any complete simple types at the top level (pretty much all | |
19410 | of them, for a language without namespaces), can be processed | |
19411 | directly. */ | |
19412 | if (parent_die == NULL | |
cd9983dd YQ |
19413 | && pdi.has_specification == 0 |
19414 | && pdi.is_declaration == 0 | |
19415 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
19416 | || pdi.tag == DW_TAG_base_type | |
d8f62e84 | 19417 | || pdi.tag == DW_TAG_array_type |
cd9983dd | 19418 | || pdi.tag == DW_TAG_subrange_type)) |
72bf9492 | 19419 | { |
7d00ffec | 19420 | if (building_psymtab && pdi.raw_name != NULL) |
f0fbb768 TT |
19421 | add_partial_symbol (&pdi, cu); |
19422 | ||
cd9983dd | 19423 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19424 | continue; |
19425 | } | |
19426 | ||
d8228535 JK |
19427 | /* The exception for DW_TAG_typedef with has_children above is |
19428 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 19429 | type_name_or_error will error on such types later. |
d8228535 JK |
19430 | |
19431 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
19432 | it could not find the child DIEs referenced later, this is checked | |
19433 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
19434 | ||
cd9983dd | 19435 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 19436 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 19437 | "- DIE at %s [in module %s]"), |
cd9983dd | 19438 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 19439 | |
72bf9492 DJ |
19440 | /* If we're at the second level, and we're an enumerator, and |
19441 | our parent has no specification (meaning possibly lives in a | |
19442 | namespace elsewhere), then we can add the partial symbol now | |
19443 | instead of queueing it. */ | |
cd9983dd | 19444 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
19445 | && parent_die != NULL |
19446 | && parent_die->die_parent == NULL | |
19447 | && parent_die->tag == DW_TAG_enumeration_type | |
19448 | && parent_die->has_specification == 0) | |
19449 | { | |
7d00ffec | 19450 | if (pdi.raw_name == NULL) |
b98664d3 | 19451 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 19452 | else if (building_psymtab) |
f0fbb768 | 19453 | add_partial_symbol (&pdi, cu); |
72bf9492 | 19454 | |
cd9983dd | 19455 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19456 | continue; |
19457 | } | |
19458 | ||
cd9983dd | 19459 | struct partial_die_info *part_die |
6f06d47b | 19460 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 19461 | |
72bf9492 DJ |
19462 | /* We'll save this DIE so link it in. */ |
19463 | part_die->die_parent = parent_die; | |
19464 | part_die->die_sibling = NULL; | |
19465 | part_die->die_child = NULL; | |
19466 | ||
19467 | if (last_die && last_die == parent_die) | |
19468 | last_die->die_child = part_die; | |
19469 | else if (last_die) | |
19470 | last_die->die_sibling = part_die; | |
19471 | ||
19472 | last_die = part_die; | |
19473 | ||
19474 | if (first_die == NULL) | |
19475 | first_die = part_die; | |
19476 | ||
19477 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
19478 | find interesting need to be in the hash table, because we | |
19479 | also have the parent/sibling/child chains; only those that we | |
19480 | might refer to by offset later during partial symbol reading. | |
19481 | ||
19482 | For now this means things that might have be the target of a | |
19483 | DW_AT_specification, DW_AT_abstract_origin, or | |
19484 | DW_AT_extension. DW_AT_extension will refer only to | |
19485 | namespaces; DW_AT_abstract_origin refers to functions (and | |
19486 | many things under the function DIE, but we do not recurse | |
19487 | into function DIEs during partial symbol reading) and | |
19488 | possibly variables as well; DW_AT_specification refers to | |
19489 | declarations. Declarations ought to have the DW_AT_declaration | |
19490 | flag. It happens that GCC forgets to put it in sometimes, but | |
19491 | only for functions, not for types. | |
19492 | ||
19493 | Adding more things than necessary to the hash table is harmless | |
19494 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
19495 | wasted time in find_partial_die, when we reread the compilation |
19496 | unit with load_all_dies set. */ | |
72bf9492 | 19497 | |
5afb4e99 | 19498 | if (load_all |
72929c62 | 19499 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 19500 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
19501 | || abbrev->tag == DW_TAG_variable |
19502 | || abbrev->tag == DW_TAG_namespace | |
19503 | || part_die->is_declaration) | |
19504 | { | |
19505 | void **slot; | |
19506 | ||
19507 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
19508 | to_underlying (part_die->sect_off), |
19509 | INSERT); | |
72bf9492 DJ |
19510 | *slot = part_die; |
19511 | } | |
19512 | ||
72bf9492 | 19513 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 19514 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
19515 | languages we have to, so that we can get at method physnames |
19516 | to infer fully qualified class names, for DW_AT_specification, | |
19517 | and for C++ template arguments. For C++, we also look one level | |
19518 | inside functions to find template arguments (if the name of the | |
19519 | function does not already contain the template arguments). | |
bc30ff58 | 19520 | |
0a4b0913 AB |
19521 | For Ada and Fortran, we need to scan the children of subprograms |
19522 | and lexical blocks as well because these languages allow the | |
19523 | definition of nested entities that could be interesting for the | |
19524 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 19525 | if (last_die->has_children |
5afb4e99 DJ |
19526 | && (load_all |
19527 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 19528 | || last_die->tag == DW_TAG_module |
72bf9492 | 19529 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
19530 | || (cu->language == language_cplus |
19531 | && last_die->tag == DW_TAG_subprogram | |
7d00ffec TT |
19532 | && (last_die->raw_name == NULL |
19533 | || strchr (last_die->raw_name, '<') == NULL)) | |
72bf9492 DJ |
19534 | || (cu->language != language_c |
19535 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 19536 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 19537 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 19538 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
19539 | || ((cu->language == language_ada |
19540 | || cu->language == language_fortran) | |
bc30ff58 JB |
19541 | && (last_die->tag == DW_TAG_subprogram |
19542 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
19543 | { |
19544 | nesting_level++; | |
19545 | parent_die = last_die; | |
19546 | continue; | |
19547 | } | |
19548 | ||
19549 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19550 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
19551 | |
19552 | /* Back to the top, do it again. */ | |
19553 | } | |
19554 | } | |
19555 | ||
6f06d47b YQ |
19556 | partial_die_info::partial_die_info (sect_offset sect_off_, |
19557 | struct abbrev_info *abbrev) | |
19558 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
19559 | { | |
19560 | } | |
19561 | ||
7d00ffec TT |
19562 | /* See class definition. */ |
19563 | ||
19564 | const char * | |
19565 | partial_die_info::name (dwarf2_cu *cu) | |
19566 | { | |
19567 | if (!canonical_name && raw_name != nullptr) | |
19568 | { | |
19569 | struct objfile *objfile = cu->per_objfile->objfile; | |
19570 | raw_name = dwarf2_canonicalize_name (raw_name, cu, objfile); | |
19571 | canonical_name = 1; | |
19572 | } | |
19573 | ||
19574 | return raw_name; | |
19575 | } | |
19576 | ||
35cc7ed7 YQ |
19577 | /* Read a minimal amount of information into the minimal die structure. |
19578 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 19579 | |
48fbe735 YQ |
19580 | const gdb_byte * |
19581 | partial_die_info::read (const struct die_reader_specs *reader, | |
19582 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 19583 | { |
dee91e82 | 19584 | struct dwarf2_cu *cu = reader->cu; |
976ca316 | 19585 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
fa238c03 | 19586 | unsigned int i; |
c5aa993b | 19587 | int has_low_pc_attr = 0; |
c906108c | 19588 | int has_high_pc_attr = 0; |
91da1414 | 19589 | int high_pc_relative = 0; |
c906108c | 19590 | |
fd0a254f | 19591 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 19592 | { |
e7da7f8f | 19593 | attribute attr; |
7a5f294d | 19594 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
18a8505e | 19595 | /* String and address offsets that need to do the reprocessing have |
dda83cd7 | 19596 | already been read at this point, so there is no need to wait until |
18a8505e | 19597 | the loop terminates to do the reprocessing. */ |
7a5f294d | 19598 | if (attr.requires_reprocessing_p ()) |
d0ce17d8 | 19599 | read_attribute_reprocess (reader, &attr, tag); |
c906108c | 19600 | /* Store the data if it is of an attribute we want to keep in a |
dda83cd7 | 19601 | partial symbol table. */ |
c906108c SS |
19602 | switch (attr.name) |
19603 | { | |
19604 | case DW_AT_name: | |
48fbe735 | 19605 | switch (tag) |
71c25dea TT |
19606 | { |
19607 | case DW_TAG_compile_unit: | |
95554aad | 19608 | case DW_TAG_partial_unit: |
348e048f | 19609 | case DW_TAG_type_unit: |
71c25dea TT |
19610 | /* Compilation units have a DW_AT_name that is a filename, not |
19611 | a source language identifier. */ | |
19612 | case DW_TAG_enumeration_type: | |
19613 | case DW_TAG_enumerator: | |
19614 | /* These tags always have simple identifiers already; no need | |
19615 | to canonicalize them. */ | |
7d00ffec | 19616 | canonical_name = 1; |
2c830f54 | 19617 | raw_name = attr.as_string (); |
71c25dea TT |
19618 | break; |
19619 | default: | |
7d00ffec | 19620 | canonical_name = 0; |
2c830f54 | 19621 | raw_name = attr.as_string (); |
71c25dea TT |
19622 | break; |
19623 | } | |
c906108c | 19624 | break; |
31ef98ae | 19625 | case DW_AT_linkage_name: |
c906108c | 19626 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
19627 | /* Note that both forms of linkage name might appear. We |
19628 | assume they will be the same, and we only store the last | |
19629 | one we see. */ | |
95f982e5 | 19630 | linkage_name = attr.as_string (); |
c906108c SS |
19631 | break; |
19632 | case DW_AT_low_pc: | |
19633 | has_low_pc_attr = 1; | |
95f982e5 | 19634 | lowpc = attr.as_address (); |
c906108c SS |
19635 | break; |
19636 | case DW_AT_high_pc: | |
19637 | has_high_pc_attr = 1; | |
95f982e5 | 19638 | highpc = attr.as_address (); |
cd6c91b4 | 19639 | if (cu->header.version >= 4 && attr.form_is_constant ()) |
31aa7e4e | 19640 | high_pc_relative = 1; |
c906108c SS |
19641 | break; |
19642 | case DW_AT_location: | |
dda83cd7 SM |
19643 | /* Support the .debug_loc offsets. */ |
19644 | if (attr.form_is_block ()) | |
19645 | { | |
9d2246fc | 19646 | d.locdesc = attr.as_block (); |
dda83cd7 SM |
19647 | } |
19648 | else if (attr.form_is_section_offset ()) | |
19649 | { | |
4d3c2250 | 19650 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 SM |
19651 | } |
19652 | else | |
19653 | { | |
4d3c2250 KB |
19654 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
19655 | "partial symbol information"); | |
dda83cd7 | 19656 | } |
c906108c | 19657 | break; |
c906108c | 19658 | case DW_AT_external: |
c45bc3f8 | 19659 | is_external = attr.as_boolean (); |
c906108c SS |
19660 | break; |
19661 | case DW_AT_declaration: | |
c45bc3f8 | 19662 | is_declaration = attr.as_boolean (); |
c906108c SS |
19663 | break; |
19664 | case DW_AT_type: | |
48fbe735 | 19665 | has_type = 1; |
c906108c SS |
19666 | break; |
19667 | case DW_AT_abstract_origin: | |
19668 | case DW_AT_specification: | |
72bf9492 | 19669 | case DW_AT_extension: |
48fbe735 | 19670 | has_specification = 1; |
0826b30a | 19671 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 19672 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 19673 | || cu->per_cu->is_dwz); |
c906108c SS |
19674 | break; |
19675 | case DW_AT_sibling: | |
19676 | /* Ignore absolute siblings, they might point outside of | |
19677 | the current compile unit. */ | |
19678 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 19679 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 19680 | else |
b9502d3f | 19681 | { |
48fbe735 | 19682 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 19683 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 19684 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
19685 | |
19686 | if (sibling_ptr < info_ptr) | |
b98664d3 | 19687 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 19688 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 19689 | reader->die_section->overflow_complaint (); |
b9502d3f | 19690 | else |
48fbe735 | 19691 | sibling = sibling_ptr; |
b9502d3f | 19692 | } |
c906108c | 19693 | break; |
dda83cd7 SM |
19694 | case DW_AT_byte_size: |
19695 | has_byte_size = 1; | |
19696 | break; | |
19697 | case DW_AT_const_value: | |
19698 | has_const_value = 1; | |
19699 | break; | |
68511cec CES |
19700 | case DW_AT_calling_convention: |
19701 | /* DWARF doesn't provide a way to identify a program's source-level | |
19702 | entry point. DW_AT_calling_convention attributes are only meant | |
19703 | to describe functions' calling conventions. | |
19704 | ||
19705 | However, because it's a necessary piece of information in | |
0c1b455e TT |
19706 | Fortran, and before DWARF 4 DW_CC_program was the only |
19707 | piece of debugging information whose definition refers to | |
19708 | a 'main program' at all, several compilers marked Fortran | |
19709 | main programs with DW_CC_program --- even when those | |
19710 | functions use the standard calling conventions. | |
19711 | ||
19712 | Although DWARF now specifies a way to provide this | |
19713 | information, we support this practice for backward | |
19714 | compatibility. */ | |
529908cb | 19715 | if (attr.constant_value (0) == DW_CC_program |
0c1b455e | 19716 | && cu->language == language_fortran) |
48fbe735 | 19717 | main_subprogram = 1; |
68511cec | 19718 | break; |
481860b3 | 19719 | case DW_AT_inline: |
529908cb TT |
19720 | { |
19721 | LONGEST value = attr.constant_value (-1); | |
19722 | if (value == DW_INL_inlined | |
19723 | || value == DW_INL_declared_inlined) | |
19724 | may_be_inlined = 1; | |
19725 | } | |
481860b3 | 19726 | break; |
95554aad TT |
19727 | |
19728 | case DW_AT_import: | |
48fbe735 | 19729 | if (tag == DW_TAG_imported_unit) |
36586728 | 19730 | { |
0826b30a | 19731 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 19732 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
19733 | || cu->per_cu->is_dwz); |
19734 | } | |
95554aad TT |
19735 | break; |
19736 | ||
0c1b455e | 19737 | case DW_AT_main_subprogram: |
c45bc3f8 | 19738 | main_subprogram = attr.as_boolean (); |
0c1b455e TT |
19739 | break; |
19740 | ||
05caa1d2 TT |
19741 | case DW_AT_ranges: |
19742 | { | |
d0ce17d8 CT |
19743 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO |
19744 | skeleton. We take advantage of the fact the DW_AT_ranges | |
19745 | does not appear in DW_TAG_compile_unit of DWO files. | |
19746 | ||
19747 | Attributes of the form DW_FORM_rnglistx have already had | |
dda83cd7 | 19748 | their value changed by read_rnglist_index and already |
d0ce17d8 CT |
19749 | include DW_AT_rnglists_base, so don't need to add the ranges |
19750 | base, either. */ | |
19751 | int need_ranges_base = (tag != DW_TAG_compile_unit | |
19752 | && attr.form != DW_FORM_rnglistx); | |
529908cb TT |
19753 | /* It would be nice to reuse dwarf2_get_pc_bounds here, |
19754 | but that requires a full DIE, so instead we just | |
19755 | reimplement it. */ | |
19756 | unsigned int ranges_offset = (attr.constant_value (0) | |
05caa1d2 TT |
19757 | + (need_ranges_base |
19758 | ? cu->ranges_base | |
19759 | : 0)); | |
19760 | ||
19761 | /* Value of the DW_AT_ranges attribute is the offset in the | |
19762 | .debug_ranges section. */ | |
19763 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
d0ce17d8 | 19764 | nullptr, tag)) |
05caa1d2 TT |
19765 | has_pc_info = 1; |
19766 | } | |
19767 | break; | |
19768 | ||
c906108c SS |
19769 | default: |
19770 | break; | |
19771 | } | |
19772 | } | |
19773 | ||
10d06d82 TT |
19774 | /* For Ada, if both the name and the linkage name appear, we prefer |
19775 | the latter. This lets "catch exception" work better, regardless | |
19776 | of the order in which the name and linkage name were emitted. | |
19777 | Really, though, this is just a workaround for the fact that gdb | |
19778 | doesn't store both the name and the linkage name. */ | |
19779 | if (cu->language == language_ada && linkage_name != nullptr) | |
7d00ffec | 19780 | raw_name = linkage_name; |
10d06d82 | 19781 | |
91da1414 | 19782 | if (high_pc_relative) |
48fbe735 | 19783 | highpc += lowpc; |
91da1414 | 19784 | |
9373cf26 JK |
19785 | if (has_low_pc_attr && has_high_pc_attr) |
19786 | { | |
19787 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
19788 | eliminate duplicate copies of functions and vtables and such. | |
19789 | The linker will arbitrarily choose one and discard the others. | |
19790 | The AT_*_pc values for such functions refer to local labels in | |
19791 | these sections. If the section from that file was discarded, the | |
19792 | labels are not in the output, so the relocs get a value of 0. | |
19793 | If this is a discarded function, mark the pc bounds as invalid, | |
19794 | so that GDB will ignore it. */ | |
976ca316 | 19795 | if (lowpc == 0 && !per_objfile->per_bfd->has_section_at_zero) |
9373cf26 | 19796 | { |
976ca316 | 19797 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19798 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19799 | |
b98664d3 | 19800 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 19801 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19802 | paddress (gdbarch, lowpc), |
19803 | sect_offset_str (sect_off), | |
9d8780f0 | 19804 | objfile_name (objfile)); |
9373cf26 JK |
19805 | } |
19806 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 19807 | else if (lowpc >= highpc) |
9373cf26 | 19808 | { |
976ca316 | 19809 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19810 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19811 | |
b98664d3 | 19812 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 19813 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19814 | paddress (gdbarch, lowpc), |
19815 | paddress (gdbarch, highpc), | |
19816 | sect_offset_str (sect_off), | |
9c541725 | 19817 | objfile_name (objfile)); |
9373cf26 JK |
19818 | } |
19819 | else | |
48fbe735 | 19820 | has_pc_info = 1; |
9373cf26 | 19821 | } |
85cbf3d3 | 19822 | |
c906108c SS |
19823 | return info_ptr; |
19824 | } | |
19825 | ||
72bf9492 DJ |
19826 | /* Find a cached partial DIE at OFFSET in CU. */ |
19827 | ||
d590ff25 YQ |
19828 | struct partial_die_info * |
19829 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
19830 | { |
19831 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 19832 | struct partial_die_info part_die (sect_off); |
72bf9492 | 19833 | |
9a3c8263 | 19834 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 19835 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 19836 | to_underlying (sect_off))); |
72bf9492 | 19837 | |
72bf9492 DJ |
19838 | return lookup_die; |
19839 | } | |
19840 | ||
348e048f DE |
19841 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
19842 | except in the case of .debug_types DIEs which do not reference | |
19843 | outside their CU (they do however referencing other types via | |
55f1336d | 19844 | DW_FORM_ref_sig8). */ |
72bf9492 | 19845 | |
122cf0f2 | 19846 | static const struct cu_partial_die_info |
9c541725 | 19847 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 19848 | { |
976ca316 SM |
19849 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19850 | struct objfile *objfile = per_objfile->objfile; | |
5afb4e99 | 19851 | struct partial_die_info *pd = NULL; |
72bf9492 | 19852 | |
36586728 | 19853 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 19854 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 19855 | { |
d590ff25 | 19856 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 19857 | if (pd != NULL) |
fb816e8b | 19858 | return { cu, pd }; |
0d99eb77 DE |
19859 | /* We missed recording what we needed. |
19860 | Load all dies and try again. */ | |
5afb4e99 | 19861 | } |
0d99eb77 DE |
19862 | else |
19863 | { | |
19864 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 19865 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 19866 | { |
9d8780f0 SM |
19867 | error (_("Dwarf Error: Type Unit at offset %s contains" |
19868 | " external reference to offset %s [in module %s].\n"), | |
19869 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
19870 | bfd_get_filename (objfile->obfd)); |
19871 | } | |
7188ed02 SM |
19872 | dwarf2_per_cu_data *per_cu |
19873 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
976ca316 | 19874 | per_objfile); |
72bf9492 | 19875 | |
976ca316 | 19876 | cu = per_objfile->get_cu (per_cu); |
7188ed02 | 19877 | if (cu == NULL || cu->partial_dies == NULL) |
976ca316 | 19878 | load_partial_comp_unit (per_cu, per_objfile, nullptr); |
ae038cb0 | 19879 | |
976ca316 | 19880 | cu = per_objfile->get_cu (per_cu); |
7188ed02 SM |
19881 | |
19882 | cu->last_used = 0; | |
19883 | pd = cu->find_partial_die (sect_off); | |
0d99eb77 | 19884 | } |
5afb4e99 | 19885 | |
dee91e82 DE |
19886 | /* If we didn't find it, and not all dies have been loaded, |
19887 | load them all and try again. */ | |
19888 | ||
7188ed02 | 19889 | if (pd == NULL && cu->per_cu->load_all_dies == 0) |
5afb4e99 | 19890 | { |
7188ed02 | 19891 | cu->per_cu->load_all_dies = 1; |
fd820528 DE |
19892 | |
19893 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
19894 | THIS_CU->cu may already be in use. So we can't just free it and | |
19895 | replace its DIEs with the ones we read in. Instead, we leave those | |
19896 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
19897 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
19898 | set. */ | |
976ca316 | 19899 | load_partial_comp_unit (cu->per_cu, per_objfile, cu); |
5afb4e99 | 19900 | |
7188ed02 | 19901 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
19902 | } |
19903 | ||
19904 | if (pd == NULL) | |
521894aa | 19905 | error (_("Dwarf Error: Cannot not find DIE at %s [from module %s]\n"), |
9d8780f0 | 19906 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
7188ed02 | 19907 | return { cu, pd }; |
72bf9492 DJ |
19908 | } |
19909 | ||
abc72ce4 DE |
19910 | /* See if we can figure out if the class lives in a namespace. We do |
19911 | this by looking for a member function; its demangled name will | |
19912 | contain namespace info, if there is any. */ | |
19913 | ||
19914 | static void | |
19915 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
19916 | struct dwarf2_cu *cu) | |
19917 | { | |
19918 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
19919 | what template types look like, because the demangler | |
19920 | frequently doesn't give the same name as the debug info. We | |
19921 | could fix this by only using the demangled name to get the | |
19922 | prefix (but see comment in read_structure_type). */ | |
19923 | ||
19924 | struct partial_die_info *real_pdi; | |
19925 | struct partial_die_info *child_pdi; | |
19926 | ||
19927 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
19928 | we should not do this. We'll prepend the parent's fully qualified | |
19929 | name when we create the partial symbol. */ | |
19930 | ||
19931 | real_pdi = struct_pdi; | |
19932 | while (real_pdi->has_specification) | |
fb816e8b | 19933 | { |
122cf0f2 AB |
19934 | auto res = find_partial_die (real_pdi->spec_offset, |
19935 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
19936 | real_pdi = res.pdi; |
19937 | cu = res.cu; | |
19938 | } | |
abc72ce4 DE |
19939 | |
19940 | if (real_pdi->die_parent != NULL) | |
19941 | return; | |
19942 | ||
19943 | for (child_pdi = struct_pdi->die_child; | |
19944 | child_pdi != NULL; | |
19945 | child_pdi = child_pdi->die_sibling) | |
19946 | { | |
19947 | if (child_pdi->tag == DW_TAG_subprogram | |
19948 | && child_pdi->linkage_name != NULL) | |
19949 | { | |
43816ebc | 19950 | gdb::unique_xmalloc_ptr<char> actual_class_name |
eff93b4d AB |
19951 | (cu->language_defn->class_name_from_physname |
19952 | (child_pdi->linkage_name)); | |
abc72ce4 DE |
19953 | if (actual_class_name != NULL) |
19954 | { | |
5e22e966 | 19955 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
19956 | struct_pdi->raw_name = objfile->intern (actual_class_name.get ()); |
19957 | struct_pdi->canonical_name = 1; | |
abc72ce4 DE |
19958 | } |
19959 | break; | |
19960 | } | |
19961 | } | |
19962 | } | |
19963 | ||
25c11aca TV |
19964 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
19965 | attribute. */ | |
19966 | ||
19967 | static bool | |
19968 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
19969 | { | |
19970 | switch (tag) | |
19971 | { | |
19972 | case DW_TAG_constant: | |
19973 | case DW_TAG_enumerator: | |
19974 | case DW_TAG_formal_parameter: | |
19975 | case DW_TAG_template_value_param: | |
19976 | case DW_TAG_variable: | |
19977 | return true; | |
19978 | } | |
19979 | ||
19980 | return false; | |
19981 | } | |
19982 | ||
52356b79 YQ |
19983 | void |
19984 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 19985 | { |
abc72ce4 DE |
19986 | /* Once we've fixed up a die, there's no point in doing so again. |
19987 | This also avoids a memory leak if we were to call | |
19988 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 19989 | if (fixup_called) |
abc72ce4 DE |
19990 | return; |
19991 | ||
72bf9492 DJ |
19992 | /* If we found a reference attribute and the DIE has no name, try |
19993 | to find a name in the referred to DIE. */ | |
19994 | ||
7d00ffec | 19995 | if (raw_name == NULL && has_specification) |
72bf9492 DJ |
19996 | { |
19997 | struct partial_die_info *spec_die; | |
72bf9492 | 19998 | |
122cf0f2 | 19999 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
20000 | spec_die = res.pdi; |
20001 | cu = res.cu; | |
72bf9492 | 20002 | |
52356b79 | 20003 | spec_die->fixup (cu); |
72bf9492 | 20004 | |
7d00ffec | 20005 | if (spec_die->raw_name) |
72bf9492 | 20006 | { |
7d00ffec TT |
20007 | raw_name = spec_die->raw_name; |
20008 | canonical_name = spec_die->canonical_name; | |
72bf9492 DJ |
20009 | |
20010 | /* Copy DW_AT_external attribute if it is set. */ | |
20011 | if (spec_die->is_external) | |
52356b79 | 20012 | is_external = spec_die->is_external; |
72bf9492 DJ |
20013 | } |
20014 | } | |
20015 | ||
25c11aca TV |
20016 | if (!has_const_value && has_specification |
20017 | && can_have_DW_AT_const_value_p (tag)) | |
20018 | { | |
20019 | struct partial_die_info *spec_die; | |
20020 | ||
20021 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
20022 | spec_die = res.pdi; | |
20023 | cu = res.cu; | |
20024 | ||
20025 | spec_die->fixup (cu); | |
20026 | ||
20027 | if (spec_die->has_const_value) | |
20028 | { | |
20029 | /* Copy DW_AT_const_value attribute if it is set. */ | |
20030 | has_const_value = spec_die->has_const_value; | |
20031 | } | |
20032 | } | |
20033 | ||
72bf9492 | 20034 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 20035 | |
7d00ffec TT |
20036 | if (raw_name == NULL && tag == DW_TAG_namespace) |
20037 | { | |
20038 | raw_name = CP_ANONYMOUS_NAMESPACE_STR; | |
20039 | canonical_name = 1; | |
20040 | } | |
72bf9492 | 20041 | |
abc72ce4 DE |
20042 | /* If there is no parent die to provide a namespace, and there are |
20043 | children, see if we can determine the namespace from their linkage | |
122d1940 | 20044 | name. */ |
abc72ce4 | 20045 | if (cu->language == language_cplus |
5e22e966 | 20046 | && !cu->per_objfile->per_bfd->types.empty () |
52356b79 YQ |
20047 | && die_parent == NULL |
20048 | && has_children | |
20049 | && (tag == DW_TAG_class_type | |
20050 | || tag == DW_TAG_structure_type | |
20051 | || tag == DW_TAG_union_type)) | |
20052 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 20053 | |
53832f31 TT |
20054 | /* GCC might emit a nameless struct or union that has a linkage |
20055 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
7d00ffec | 20056 | if (raw_name == NULL |
52356b79 YQ |
20057 | && (tag == DW_TAG_class_type |
20058 | || tag == DW_TAG_interface_type | |
20059 | || tag == DW_TAG_structure_type | |
20060 | || tag == DW_TAG_union_type) | |
20061 | && linkage_name != NULL) | |
53832f31 | 20062 | { |
43816ebc TT |
20063 | gdb::unique_xmalloc_ptr<char> demangled |
20064 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
20065 | if (demangled != nullptr) | |
53832f31 | 20066 | { |
96408a79 SA |
20067 | const char *base; |
20068 | ||
20069 | /* Strip any leading namespaces/classes, keep only the base name. | |
20070 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
20071 | base = strrchr (demangled.get (), ':'); |
20072 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
20073 | base++; |
20074 | else | |
43816ebc | 20075 | base = demangled.get (); |
96408a79 | 20076 | |
5e22e966 | 20077 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
20078 | raw_name = objfile->intern (base); |
20079 | canonical_name = 1; | |
53832f31 TT |
20080 | } |
20081 | } | |
20082 | ||
52356b79 | 20083 | fixup_called = 1; |
72bf9492 DJ |
20084 | } |
20085 | ||
d0ce17d8 CT |
20086 | /* Read the .debug_loclists or .debug_rnglists header (they are the same format) |
20087 | contents from the given SECTION in the HEADER. */ | |
41144253 | 20088 | static void |
d0ce17d8 CT |
20089 | read_loclists_rnglists_header (struct loclists_rnglists_header *header, |
20090 | struct dwarf2_section_info *section) | |
41144253 | 20091 | { |
20092 | unsigned int bytes_read; | |
20093 | bfd *abfd = section->get_bfd_owner (); | |
20094 | const gdb_byte *info_ptr = section->buffer; | |
20095 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
20096 | info_ptr += bytes_read; | |
20097 | header->version = read_2_bytes (abfd, info_ptr); | |
20098 | info_ptr += 2; | |
20099 | header->addr_size = read_1_byte (abfd, info_ptr); | |
20100 | info_ptr += 1; | |
20101 | header->segment_collector_size = read_1_byte (abfd, info_ptr); | |
20102 | info_ptr += 1; | |
20103 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); | |
20104 | } | |
20105 | ||
20106 | /* Return the DW_AT_loclists_base value for the CU. */ | |
20107 | static ULONGEST | |
20108 | lookup_loclist_base (struct dwarf2_cu *cu) | |
20109 | { | |
20110 | /* For the .dwo unit, the loclist_base points to the first offset following | |
20111 | the header. The header consists of the following entities- | |
20112 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
20113 | bit format) | |
20114 | 2. version (2 bytes) | |
20115 | 3. address size (1 byte) | |
20116 | 4. segment selector size (1 byte) | |
20117 | 5. offset entry count (4 bytes) | |
20118 | These sizes are derived as per the DWARFv5 standard. */ | |
20119 | if (cu->dwo_unit != nullptr) | |
20120 | { | |
20121 | if (cu->header.initial_length_size == 4) | |
20122 | return LOCLIST_HEADER_SIZE32; | |
20123 | return LOCLIST_HEADER_SIZE64; | |
20124 | } | |
20125 | return cu->loclist_base; | |
20126 | } | |
20127 | ||
20128 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
20129 | array of offsets in the .debug_loclists section. */ | |
20130 | static CORE_ADDR | |
20131 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) | |
20132 | { | |
976ca316 SM |
20133 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20134 | struct objfile *objfile = per_objfile->objfile; | |
41144253 | 20135 | bfd *abfd = objfile->obfd; |
20136 | ULONGEST loclist_base = lookup_loclist_base (cu); | |
20137 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); | |
20138 | ||
20139 | section->read (objfile); | |
20140 | if (section->buffer == NULL) | |
20141 | complaint (_("DW_FORM_loclistx used without .debug_loclists " | |
dda83cd7 | 20142 | "section [in module %s]"), objfile_name (objfile)); |
d0ce17d8 CT |
20143 | struct loclists_rnglists_header header; |
20144 | read_loclists_rnglists_header (&header, section); | |
41144253 | 20145 | if (loclist_index >= header.offset_entry_count) |
20146 | complaint (_("DW_FORM_loclistx pointing outside of " | |
dda83cd7 SM |
20147 | ".debug_loclists offset array [in module %s]"), |
20148 | objfile_name (objfile)); | |
41144253 | 20149 | if (loclist_base + loclist_index * cu->header.offset_size |
20150 | >= section->size) | |
20151 | complaint (_("DW_FORM_loclistx pointing outside of " | |
dda83cd7 SM |
20152 | ".debug_loclists section [in module %s]"), |
20153 | objfile_name (objfile)); | |
41144253 | 20154 | const gdb_byte *info_ptr |
20155 | = section->buffer + loclist_base + loclist_index * cu->header.offset_size; | |
20156 | ||
20157 | if (cu->header.offset_size == 4) | |
20158 | return bfd_get_32 (abfd, info_ptr) + loclist_base; | |
20159 | else | |
20160 | return bfd_get_64 (abfd, info_ptr) + loclist_base; | |
20161 | } | |
20162 | ||
d0ce17d8 CT |
20163 | /* Given a DW_FORM_rnglistx value RNGLIST_INDEX, fetch the offset from the |
20164 | array of offsets in the .debug_rnglists section. */ | |
20165 | static CORE_ADDR | |
20166 | read_rnglist_index (struct dwarf2_cu *cu, ULONGEST rnglist_index, | |
20167 | dwarf_tag tag) | |
20168 | { | |
20169 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
20170 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
20171 | bfd *abfd = objfile->obfd; | |
20172 | ULONGEST rnglist_header_size = | |
20173 | (cu->header.initial_length_size == 4 ? RNGLIST_HEADER_SIZE32 | |
20174 | : RNGLIST_HEADER_SIZE64); | |
20175 | ULONGEST rnglist_base = | |
20176 | (cu->dwo_unit != nullptr) ? rnglist_header_size : cu->ranges_base; | |
20177 | ULONGEST start_offset = | |
20178 | rnglist_base + rnglist_index * cu->header.offset_size; | |
20179 | ||
20180 | /* Get rnglists section. */ | |
20181 | struct dwarf2_section_info *section = cu_debug_rnglists_section (cu, tag); | |
20182 | ||
20183 | /* Read the rnglists section content. */ | |
20184 | section->read (objfile); | |
20185 | if (section->buffer == nullptr) | |
20186 | error (_("DW_FORM_rnglistx used without .debug_rnglists section " | |
20187 | "[in module %s]"), | |
20188 | objfile_name (objfile)); | |
20189 | ||
20190 | /* Verify the rnglist index is valid. */ | |
20191 | struct loclists_rnglists_header header; | |
20192 | read_loclists_rnglists_header (&header, section); | |
20193 | if (rnglist_index >= header.offset_entry_count) | |
20194 | error (_("DW_FORM_rnglistx index pointing outside of " | |
20195 | ".debug_rnglists offset array [in module %s]"), | |
20196 | objfile_name (objfile)); | |
20197 | ||
20198 | /* Validate that the offset is within the section's range. */ | |
20199 | if (start_offset >= section->size) | |
20200 | error (_("DW_FORM_rnglistx pointing outside of " | |
dda83cd7 | 20201 | ".debug_rnglists section [in module %s]"), |
d0ce17d8 CT |
20202 | objfile_name (objfile)); |
20203 | ||
20204 | /* Validate that reading won't go beyond the end of the section. */ | |
20205 | if (start_offset + cu->header.offset_size > rnglist_base + section->size) | |
20206 | error (_("Reading DW_FORM_rnglistx index beyond end of" | |
20207 | ".debug_rnglists section [in module %s]"), | |
20208 | objfile_name (objfile)); | |
20209 | ||
20210 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
20211 | ||
20212 | if (cu->header.offset_size == 4) | |
20213 | return read_4_bytes (abfd, info_ptr) + rnglist_base; | |
20214 | else | |
20215 | return read_8_bytes (abfd, info_ptr) + rnglist_base; | |
20216 | } | |
20217 | ||
18a8505e AT |
20218 | /* Process the attributes that had to be skipped in the first round. These |
20219 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
20220 | They could not have been processed in the first round, because at the time | |
20221 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
20222 | static void |
20223 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 20224 | struct attribute *attr, dwarf_tag tag) |
18a8505e AT |
20225 | { |
20226 | struct dwarf2_cu *cu = reader->cu; | |
20227 | switch (attr->form) | |
20228 | { | |
20229 | case DW_FORM_addrx: | |
20230 | case DW_FORM_GNU_addr_index: | |
36d378cf TT |
20231 | attr->set_address (read_addr_index (cu, |
20232 | attr->as_unsigned_reprocess ())); | |
dda83cd7 | 20233 | break; |
41144253 | 20234 | case DW_FORM_loclistx: |
529908cb | 20235 | attr->set_address (read_loclist_index (cu, attr->as_unsigned ())); |
41144253 | 20236 | break; |
d0ce17d8 | 20237 | case DW_FORM_rnglistx: |
529908cb | 20238 | attr->set_address (read_rnglist_index (cu, attr->as_unsigned (), tag)); |
dda83cd7 | 20239 | break; |
18a8505e AT |
20240 | case DW_FORM_strx: |
20241 | case DW_FORM_strx1: | |
20242 | case DW_FORM_strx2: | |
20243 | case DW_FORM_strx3: | |
20244 | case DW_FORM_strx4: | |
20245 | case DW_FORM_GNU_str_index: | |
20246 | { | |
fe56917a | 20247 | unsigned int str_index = attr->as_unsigned_reprocess (); |
c6481205 | 20248 | gdb_assert (!attr->canonical_string_p ()); |
18a8505e | 20249 | if (reader->dwo_file != NULL) |
c6481205 TT |
20250 | attr->set_string_noncanonical (read_dwo_str_index (reader, |
20251 | str_index)); | |
18a8505e | 20252 | else |
c6481205 TT |
20253 | attr->set_string_noncanonical (read_stub_str_index (cu, |
20254 | str_index)); | |
18a8505e AT |
20255 | break; |
20256 | } | |
20257 | default: | |
20258 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
20259 | } | |
20260 | } | |
20261 | ||
a8329558 | 20262 | /* Read an attribute value described by an attribute form. */ |
c906108c | 20263 | |
d521ce57 | 20264 | static const gdb_byte * |
dee91e82 DE |
20265 | read_attribute_value (const struct die_reader_specs *reader, |
20266 | struct attribute *attr, unsigned form, | |
7a5f294d | 20267 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 20268 | { |
dee91e82 | 20269 | struct dwarf2_cu *cu = reader->cu; |
976ca316 SM |
20270 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20271 | struct objfile *objfile = per_objfile->objfile; | |
dee91e82 | 20272 | bfd *abfd = reader->abfd; |
e7c27a73 | 20273 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
20274 | unsigned int bytes_read; |
20275 | struct dwarf_block *blk; | |
20276 | ||
aead7601 | 20277 | attr->form = (enum dwarf_form) form; |
a8329558 | 20278 | switch (form) |
c906108c | 20279 | { |
c906108c | 20280 | case DW_FORM_ref_addr: |
ae411497 | 20281 | if (cu->header.version == 2) |
414ad644 TT |
20282 | attr->set_unsigned (cu->header.read_address (abfd, info_ptr, |
20283 | &bytes_read)); | |
ae411497 | 20284 | else |
414ad644 TT |
20285 | attr->set_unsigned (cu->header.read_offset (abfd, info_ptr, |
20286 | &bytes_read)); | |
ae411497 TT |
20287 | info_ptr += bytes_read; |
20288 | break; | |
36586728 | 20289 | case DW_FORM_GNU_ref_alt: |
414ad644 TT |
20290 | attr->set_unsigned (cu->header.read_offset (abfd, info_ptr, |
20291 | &bytes_read)); | |
36586728 TT |
20292 | info_ptr += bytes_read; |
20293 | break; | |
ae411497 | 20294 | case DW_FORM_addr: |
08feed99 TT |
20295 | { |
20296 | struct gdbarch *gdbarch = objfile->arch (); | |
36d378cf TT |
20297 | CORE_ADDR addr = cu->header.read_address (abfd, info_ptr, &bytes_read); |
20298 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr); | |
20299 | attr->set_address (addr); | |
08feed99 TT |
20300 | info_ptr += bytes_read; |
20301 | } | |
c906108c SS |
20302 | break; |
20303 | case DW_FORM_block2: | |
7b5a2f43 | 20304 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20305 | blk->size = read_2_bytes (abfd, info_ptr); |
20306 | info_ptr += 2; | |
20307 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20308 | info_ptr += blk->size; | |
9d2246fc | 20309 | attr->set_block (blk); |
c906108c SS |
20310 | break; |
20311 | case DW_FORM_block4: | |
7b5a2f43 | 20312 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20313 | blk->size = read_4_bytes (abfd, info_ptr); |
20314 | info_ptr += 4; | |
20315 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20316 | info_ptr += blk->size; | |
9d2246fc | 20317 | attr->set_block (blk); |
c906108c SS |
20318 | break; |
20319 | case DW_FORM_data2: | |
414ad644 | 20320 | attr->set_unsigned (read_2_bytes (abfd, info_ptr)); |
c906108c SS |
20321 | info_ptr += 2; |
20322 | break; | |
20323 | case DW_FORM_data4: | |
414ad644 | 20324 | attr->set_unsigned (read_4_bytes (abfd, info_ptr)); |
c906108c SS |
20325 | info_ptr += 4; |
20326 | break; | |
20327 | case DW_FORM_data8: | |
414ad644 | 20328 | attr->set_unsigned (read_8_bytes (abfd, info_ptr)); |
c906108c SS |
20329 | info_ptr += 8; |
20330 | break; | |
0224619f JK |
20331 | case DW_FORM_data16: |
20332 | blk = dwarf_alloc_block (cu); | |
20333 | blk->size = 16; | |
20334 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
20335 | info_ptr += 16; | |
9d2246fc | 20336 | attr->set_block (blk); |
0224619f | 20337 | break; |
2dc7f7b3 | 20338 | case DW_FORM_sec_offset: |
414ad644 TT |
20339 | attr->set_unsigned (cu->header.read_offset (abfd, info_ptr, |
20340 | &bytes_read)); | |
2dc7f7b3 TT |
20341 | info_ptr += bytes_read; |
20342 | break; | |
41144253 | 20343 | case DW_FORM_loclistx: |
20344 | { | |
7a5f294d TT |
20345 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20346 | &bytes_read)); | |
20347 | info_ptr += bytes_read; | |
41144253 | 20348 | } |
20349 | break; | |
c906108c | 20350 | case DW_FORM_string: |
c6481205 TT |
20351 | attr->set_string_noncanonical (read_direct_string (abfd, info_ptr, |
20352 | &bytes_read)); | |
c906108c SS |
20353 | info_ptr += bytes_read; |
20354 | break; | |
4bdf3d34 | 20355 | case DW_FORM_strp: |
36586728 TT |
20356 | if (!cu->per_cu->is_dwz) |
20357 | { | |
c6481205 TT |
20358 | attr->set_string_noncanonical |
20359 | (read_indirect_string (per_objfile, | |
20360 | abfd, info_ptr, cu_header, | |
20361 | &bytes_read)); | |
36586728 TT |
20362 | info_ptr += bytes_read; |
20363 | break; | |
20364 | } | |
20365 | /* FALLTHROUGH */ | |
43988095 JK |
20366 | case DW_FORM_line_strp: |
20367 | if (!cu->per_cu->is_dwz) | |
20368 | { | |
c6481205 TT |
20369 | attr->set_string_noncanonical |
20370 | (per_objfile->read_line_string (info_ptr, cu_header, | |
20371 | &bytes_read)); | |
43988095 JK |
20372 | info_ptr += bytes_read; |
20373 | break; | |
20374 | } | |
20375 | /* FALLTHROUGH */ | |
36586728 TT |
20376 | case DW_FORM_GNU_strp_alt: |
20377 | { | |
976ca316 | 20378 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
8266302d TT |
20379 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
20380 | &bytes_read); | |
36586728 | 20381 | |
c6481205 TT |
20382 | attr->set_string_noncanonical |
20383 | (dwz->read_string (objfile, str_offset)); | |
36586728 TT |
20384 | info_ptr += bytes_read; |
20385 | } | |
4bdf3d34 | 20386 | break; |
2dc7f7b3 | 20387 | case DW_FORM_exprloc: |
c906108c | 20388 | case DW_FORM_block: |
7b5a2f43 | 20389 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20390 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20391 | info_ptr += bytes_read; | |
20392 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20393 | info_ptr += blk->size; | |
9d2246fc | 20394 | attr->set_block (blk); |
c906108c SS |
20395 | break; |
20396 | case DW_FORM_block1: | |
7b5a2f43 | 20397 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20398 | blk->size = read_1_byte (abfd, info_ptr); |
20399 | info_ptr += 1; | |
20400 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20401 | info_ptr += blk->size; | |
9d2246fc | 20402 | attr->set_block (blk); |
c906108c SS |
20403 | break; |
20404 | case DW_FORM_data1: | |
c906108c | 20405 | case DW_FORM_flag: |
414ad644 | 20406 | attr->set_unsigned (read_1_byte (abfd, info_ptr)); |
c906108c SS |
20407 | info_ptr += 1; |
20408 | break; | |
2dc7f7b3 | 20409 | case DW_FORM_flag_present: |
414ad644 | 20410 | attr->set_unsigned (1); |
2dc7f7b3 | 20411 | break; |
c906108c | 20412 | case DW_FORM_sdata: |
1bc397c5 | 20413 | attr->set_signed (read_signed_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20414 | info_ptr += bytes_read; |
20415 | break; | |
18a8505e | 20416 | case DW_FORM_rnglistx: |
7a5f294d TT |
20417 | { |
20418 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, | |
20419 | &bytes_read)); | |
20420 | info_ptr += bytes_read; | |
20421 | } | |
20422 | break; | |
d0ce17d8 | 20423 | case DW_FORM_udata: |
414ad644 | 20424 | attr->set_unsigned (read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20425 | info_ptr += bytes_read; |
20426 | break; | |
20427 | case DW_FORM_ref1: | |
414ad644 TT |
20428 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20429 | + read_1_byte (abfd, info_ptr))); | |
c906108c SS |
20430 | info_ptr += 1; |
20431 | break; | |
20432 | case DW_FORM_ref2: | |
414ad644 TT |
20433 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20434 | + read_2_bytes (abfd, info_ptr))); | |
c906108c SS |
20435 | info_ptr += 2; |
20436 | break; | |
20437 | case DW_FORM_ref4: | |
414ad644 TT |
20438 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20439 | + read_4_bytes (abfd, info_ptr))); | |
c906108c SS |
20440 | info_ptr += 4; |
20441 | break; | |
613e1657 | 20442 | case DW_FORM_ref8: |
414ad644 TT |
20443 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20444 | + read_8_bytes (abfd, info_ptr))); | |
613e1657 KB |
20445 | info_ptr += 8; |
20446 | break; | |
55f1336d | 20447 | case DW_FORM_ref_sig8: |
630ed6b9 | 20448 | attr->set_signature (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
20449 | info_ptr += 8; |
20450 | break; | |
c906108c | 20451 | case DW_FORM_ref_udata: |
414ad644 TT |
20452 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20453 | + read_unsigned_leb128 (abfd, info_ptr, | |
20454 | &bytes_read))); | |
c906108c SS |
20455 | info_ptr += bytes_read; |
20456 | break; | |
c906108c | 20457 | case DW_FORM_indirect: |
a8329558 KW |
20458 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20459 | info_ptr += bytes_read; | |
43988095 JK |
20460 | if (form == DW_FORM_implicit_const) |
20461 | { | |
20462 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
20463 | info_ptr += bytes_read; | |
20464 | } | |
20465 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
7a5f294d | 20466 | info_ptr); |
43988095 JK |
20467 | break; |
20468 | case DW_FORM_implicit_const: | |
1bc397c5 | 20469 | attr->set_signed (implicit_const); |
a8329558 | 20470 | break; |
336d760d | 20471 | case DW_FORM_addrx: |
3019eac3 | 20472 | case DW_FORM_GNU_addr_index: |
fe56917a TT |
20473 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20474 | &bytes_read)); | |
3019eac3 DE |
20475 | info_ptr += bytes_read; |
20476 | break; | |
cf532bd1 | 20477 | case DW_FORM_strx: |
15f18d14 AT |
20478 | case DW_FORM_strx1: |
20479 | case DW_FORM_strx2: | |
20480 | case DW_FORM_strx3: | |
20481 | case DW_FORM_strx4: | |
3019eac3 | 20482 | case DW_FORM_GNU_str_index: |
3019eac3 | 20483 | { |
15f18d14 AT |
20484 | ULONGEST str_index; |
20485 | if (form == DW_FORM_strx1) | |
20486 | { | |
20487 | str_index = read_1_byte (abfd, info_ptr); | |
20488 | info_ptr += 1; | |
20489 | } | |
20490 | else if (form == DW_FORM_strx2) | |
20491 | { | |
20492 | str_index = read_2_bytes (abfd, info_ptr); | |
20493 | info_ptr += 2; | |
20494 | } | |
20495 | else if (form == DW_FORM_strx3) | |
20496 | { | |
20497 | str_index = read_3_bytes (abfd, info_ptr); | |
20498 | info_ptr += 3; | |
20499 | } | |
20500 | else if (form == DW_FORM_strx4) | |
20501 | { | |
20502 | str_index = read_4_bytes (abfd, info_ptr); | |
20503 | info_ptr += 4; | |
20504 | } | |
20505 | else | |
20506 | { | |
20507 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
20508 | info_ptr += bytes_read; | |
20509 | } | |
fe56917a | 20510 | attr->set_unsigned_reprocess (str_index); |
7a5f294d | 20511 | } |
3019eac3 | 20512 | break; |
c906108c | 20513 | default: |
8a3fe4f8 | 20514 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
20515 | dwarf_form_name (form), |
20516 | bfd_get_filename (abfd)); | |
c906108c | 20517 | } |
28e94949 | 20518 | |
36586728 | 20519 | /* Super hack. */ |
cd6c91b4 | 20520 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
20521 | attr->form = DW_FORM_GNU_ref_alt; |
20522 | ||
28e94949 JB |
20523 | /* We have seen instances where the compiler tried to emit a byte |
20524 | size attribute of -1 which ended up being encoded as an unsigned | |
20525 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
20526 | an object of this size seems pretty unlikely so we can relatively | |
20527 | safely treat these cases as if the size attribute was invalid and | |
20528 | treat them as zero by default. */ | |
20529 | if (attr->name == DW_AT_byte_size | |
20530 | && form == DW_FORM_data4 | |
529908cb | 20531 | && attr->as_unsigned () >= 0xffffffff) |
01c66ae6 JB |
20532 | { |
20533 | complaint | |
dda83cd7 SM |
20534 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
20535 | hex_string (attr->as_unsigned ())); | |
414ad644 | 20536 | attr->set_unsigned (0); |
01c66ae6 | 20537 | } |
28e94949 | 20538 | |
c906108c SS |
20539 | return info_ptr; |
20540 | } | |
20541 | ||
a8329558 KW |
20542 | /* Read an attribute described by an abbreviated attribute. */ |
20543 | ||
d521ce57 | 20544 | static const gdb_byte * |
dee91e82 DE |
20545 | read_attribute (const struct die_reader_specs *reader, |
20546 | struct attribute *attr, struct attr_abbrev *abbrev, | |
7a5f294d | 20547 | const gdb_byte *info_ptr) |
a8329558 KW |
20548 | { |
20549 | attr->name = abbrev->name; | |
c6481205 | 20550 | attr->string_is_canonical = 0; |
fe56917a | 20551 | attr->requires_reprocessing = 0; |
43988095 | 20552 | return read_attribute_value (reader, attr, abbrev->form, |
7a5f294d | 20553 | abbrev->implicit_const, info_ptr); |
a8329558 KW |
20554 | } |
20555 | ||
43988095 JK |
20556 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
20557 | ||
20558 | static const char * | |
976ca316 | 20559 | read_indirect_string_at_offset (dwarf2_per_objfile *per_objfile, |
4f44ae6c | 20560 | LONGEST str_offset) |
43988095 | 20561 | { |
976ca316 SM |
20562 | return per_objfile->per_bfd->str.read_string (per_objfile->objfile, |
20563 | str_offset, "DW_FORM_strp"); | |
c906108c SS |
20564 | } |
20565 | ||
43988095 JK |
20566 | /* Return pointer to string at .debug_str offset as read from BUF. |
20567 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
20568 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
20569 | ||
d521ce57 | 20570 | static const char * |
976ca316 | 20571 | read_indirect_string (dwarf2_per_objfile *per_objfile, bfd *abfd, |
ed2dc618 | 20572 | const gdb_byte *buf, |
cf2c3c16 TT |
20573 | const struct comp_unit_head *cu_header, |
20574 | unsigned int *bytes_read_ptr) | |
20575 | { | |
8266302d | 20576 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 20577 | |
976ca316 | 20578 | return read_indirect_string_at_offset (per_objfile, str_offset); |
cf2c3c16 TT |
20579 | } |
20580 | ||
86c0bb4c | 20581 | /* See read.h. */ |
43988095 | 20582 | |
86c0bb4c TT |
20583 | const char * |
20584 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
5989a64e SM |
20585 | const struct comp_unit_head *cu_header, |
20586 | unsigned int *bytes_read_ptr) | |
43988095 | 20587 | { |
86c0bb4c | 20588 | bfd *abfd = objfile->obfd; |
8266302d | 20589 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 20590 | |
5989a64e | 20591 | return per_bfd->line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
20592 | } |
20593 | ||
3019eac3 | 20594 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 20595 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
20596 | ADDR_SIZE is the size of addresses from the CU header. */ |
20597 | ||
20598 | static CORE_ADDR | |
976ca316 SM |
20599 | read_addr_index_1 (dwarf2_per_objfile *per_objfile, unsigned int addr_index, |
20600 | gdb::optional<ULONGEST> addr_base, int addr_size) | |
3019eac3 | 20601 | { |
976ca316 | 20602 | struct objfile *objfile = per_objfile->objfile; |
3019eac3 DE |
20603 | bfd *abfd = objfile->obfd; |
20604 | const gdb_byte *info_ptr; | |
18a8505e | 20605 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 20606 | |
976ca316 SM |
20607 | per_objfile->per_bfd->addr.read (objfile); |
20608 | if (per_objfile->per_bfd->addr.buffer == NULL) | |
3019eac3 | 20609 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), |
4262abfb | 20610 | objfile_name (objfile)); |
18a8505e | 20611 | if (addr_base_or_zero + addr_index * addr_size |
976ca316 | 20612 | >= per_objfile->per_bfd->addr.size) |
3019eac3 DE |
20613 | error (_("DW_FORM_addr_index pointing outside of " |
20614 | ".debug_addr section [in module %s]"), | |
4262abfb | 20615 | objfile_name (objfile)); |
976ca316 SM |
20616 | info_ptr = (per_objfile->per_bfd->addr.buffer + addr_base_or_zero |
20617 | + addr_index * addr_size); | |
3019eac3 DE |
20618 | if (addr_size == 4) |
20619 | return bfd_get_32 (abfd, info_ptr); | |
20620 | else | |
20621 | return bfd_get_64 (abfd, info_ptr); | |
20622 | } | |
20623 | ||
20624 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
20625 | ||
20626 | static CORE_ADDR | |
20627 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
20628 | { | |
5e22e966 | 20629 | return read_addr_index_1 (cu->per_objfile, addr_index, |
518817b3 | 20630 | cu->addr_base, cu->header.addr_size); |
3019eac3 DE |
20631 | } |
20632 | ||
20633 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
20634 | ||
20635 | static CORE_ADDR | |
d521ce57 | 20636 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
20637 | unsigned int *bytes_read) |
20638 | { | |
5e22e966 | 20639 | bfd *abfd = cu->per_objfile->objfile->obfd; |
3019eac3 DE |
20640 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
20641 | ||
20642 | return read_addr_index (cu, addr_index); | |
20643 | } | |
20644 | ||
450a1bfc | 20645 | /* See read.h. */ |
3019eac3 DE |
20646 | |
20647 | CORE_ADDR | |
82ca3f51 | 20648 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, |
976ca316 | 20649 | dwarf2_per_objfile *per_objfile, |
82ca3f51 | 20650 | unsigned int addr_index) |
3019eac3 | 20651 | { |
976ca316 | 20652 | struct dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
18a8505e | 20653 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
20654 | int addr_size; |
20655 | ||
3019eac3 DE |
20656 | /* We need addr_base and addr_size. |
20657 | If we don't have PER_CU->cu, we have to get it. | |
20658 | Nasty, but the alternative is storing the needed info in PER_CU, | |
20659 | which at this point doesn't seem justified: it's not clear how frequently | |
20660 | it would get used and it would increase the size of every PER_CU. | |
20661 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
20662 | so we're not in uncharted territory here. | |
20663 | Alas we need to be a bit more complicated as addr_base is contained | |
20664 | in the DIE. | |
20665 | ||
20666 | We don't need to read the entire CU(/TU). | |
20667 | We just need the header and top level die. | |
a1b64ce1 | 20668 | |
3019eac3 | 20669 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 20670 | For now we skip this optimization. */ |
3019eac3 DE |
20671 | |
20672 | if (cu != NULL) | |
20673 | { | |
20674 | addr_base = cu->addr_base; | |
20675 | addr_size = cu->header.addr_size; | |
20676 | } | |
20677 | else | |
20678 | { | |
976ca316 | 20679 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
20680 | addr_base = reader.cu->addr_base; |
20681 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
20682 | } |
20683 | ||
976ca316 | 20684 | return read_addr_index_1 (per_objfile, addr_index, addr_base, addr_size); |
3019eac3 DE |
20685 | } |
20686 | ||
18a8505e AT |
20687 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
20688 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
20689 | DWO file. */ | |
3019eac3 | 20690 | |
d521ce57 | 20691 | static const char * |
18a8505e AT |
20692 | read_str_index (struct dwarf2_cu *cu, |
20693 | struct dwarf2_section_info *str_section, | |
20694 | struct dwarf2_section_info *str_offsets_section, | |
20695 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 20696 | { |
976ca316 SM |
20697 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20698 | struct objfile *objfile = per_objfile->objfile; | |
c5164cbc | 20699 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 20700 | bfd *abfd = objfile->obfd; |
d521ce57 | 20701 | const gdb_byte *info_ptr; |
3019eac3 | 20702 | ULONGEST str_offset; |
cf532bd1 | 20703 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 20704 | |
96b79293 TT |
20705 | str_section->read (objfile); |
20706 | str_offsets_section->read (objfile); | |
73869dc2 | 20707 | if (str_section->buffer == NULL) |
18a8505e | 20708 | error (_("%s used without %s section" |
9d8780f0 | 20709 | " in CU at offset %s [in module %s]"), |
96b79293 | 20710 | form_name, str_section->get_name (), |
dda83cd7 | 20711 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20712 | if (str_offsets_section->buffer == NULL) |
18a8505e | 20713 | error (_("%s used without %s section" |
9d8780f0 | 20714 | " in CU at offset %s [in module %s]"), |
96b79293 | 20715 | form_name, str_section->get_name (), |
dda83cd7 | 20716 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20717 | info_ptr = (str_offsets_section->buffer |
18a8505e | 20718 | + str_offsets_base |
3019eac3 DE |
20719 | + str_index * cu->header.offset_size); |
20720 | if (cu->header.offset_size == 4) | |
20721 | str_offset = bfd_get_32 (abfd, info_ptr); | |
20722 | else | |
20723 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 20724 | if (str_offset >= str_section->size) |
57d63ce2 | 20725 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
20726 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
20727 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20728 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
20729 | } |
20730 | ||
18a8505e AT |
20731 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
20732 | ||
20733 | static const char * | |
20734 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
20735 | { | |
20736 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
20737 | ? reader->cu->header.addr_size : 0; | |
20738 | return read_str_index (reader->cu, | |
20739 | &reader->dwo_file->sections.str, | |
20740 | &reader->dwo_file->sections.str_offsets, | |
20741 | str_offsets_base, str_index); | |
20742 | } | |
20743 | ||
20744 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
20745 | ||
20746 | static const char * | |
20747 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
20748 | { | |
5e22e966 | 20749 | struct objfile *objfile = cu->per_objfile->objfile; |
18a8505e AT |
20750 | const char *objf_name = objfile_name (objfile); |
20751 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
20752 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
20753 | ||
20754 | if (!cu->str_offsets_base.has_value ()) | |
20755 | error (_("%s used in Fission stub without %s" | |
20756 | " in CU at offset 0x%lx [in module %s]"), | |
20757 | form_name, str_offsets_attr_name, | |
20758 | (long) cu->header.offset_size, objf_name); | |
20759 | ||
20760 | return read_str_index (cu, | |
5e22e966 SM |
20761 | &cu->per_objfile->per_bfd->str, |
20762 | &cu->per_objfile->per_bfd->str_offsets, | |
18a8505e AT |
20763 | *cu->str_offsets_base, str_index); |
20764 | } | |
20765 | ||
3019eac3 DE |
20766 | /* Return the length of an LEB128 number in BUF. */ |
20767 | ||
20768 | static int | |
20769 | leb128_size (const gdb_byte *buf) | |
20770 | { | |
20771 | const gdb_byte *begin = buf; | |
20772 | gdb_byte byte; | |
20773 | ||
20774 | while (1) | |
20775 | { | |
20776 | byte = *buf++; | |
20777 | if ((byte & 128) == 0) | |
20778 | return buf - begin; | |
20779 | } | |
20780 | } | |
20781 | ||
c906108c | 20782 | static void |
e142c38c | 20783 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
20784 | { |
20785 | switch (lang) | |
20786 | { | |
20787 | case DW_LANG_C89: | |
76bee0cc | 20788 | case DW_LANG_C99: |
0cfd832f | 20789 | case DW_LANG_C11: |
c906108c | 20790 | case DW_LANG_C: |
d1be3247 | 20791 | case DW_LANG_UPC: |
e142c38c | 20792 | cu->language = language_c; |
c906108c | 20793 | break; |
9c37b5ae | 20794 | case DW_LANG_Java: |
c906108c | 20795 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
20796 | case DW_LANG_C_plus_plus_11: |
20797 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 20798 | cu->language = language_cplus; |
c906108c | 20799 | break; |
6aecb9c2 JB |
20800 | case DW_LANG_D: |
20801 | cu->language = language_d; | |
20802 | break; | |
c906108c SS |
20803 | case DW_LANG_Fortran77: |
20804 | case DW_LANG_Fortran90: | |
b21b22e0 | 20805 | case DW_LANG_Fortran95: |
f7de9aab MW |
20806 | case DW_LANG_Fortran03: |
20807 | case DW_LANG_Fortran08: | |
e142c38c | 20808 | cu->language = language_fortran; |
c906108c | 20809 | break; |
a766d390 DE |
20810 | case DW_LANG_Go: |
20811 | cu->language = language_go; | |
20812 | break; | |
c906108c | 20813 | case DW_LANG_Mips_Assembler: |
e142c38c | 20814 | cu->language = language_asm; |
c906108c SS |
20815 | break; |
20816 | case DW_LANG_Ada83: | |
8aaf0b47 | 20817 | case DW_LANG_Ada95: |
bc5f45f8 JB |
20818 | cu->language = language_ada; |
20819 | break; | |
72019c9c GM |
20820 | case DW_LANG_Modula2: |
20821 | cu->language = language_m2; | |
20822 | break; | |
fe8e67fd PM |
20823 | case DW_LANG_Pascal83: |
20824 | cu->language = language_pascal; | |
20825 | break; | |
22566fbd DJ |
20826 | case DW_LANG_ObjC: |
20827 | cu->language = language_objc; | |
20828 | break; | |
c44af4eb TT |
20829 | case DW_LANG_Rust: |
20830 | case DW_LANG_Rust_old: | |
20831 | cu->language = language_rust; | |
20832 | break; | |
c906108c SS |
20833 | case DW_LANG_Cobol74: |
20834 | case DW_LANG_Cobol85: | |
c906108c | 20835 | default: |
e142c38c | 20836 | cu->language = language_minimal; |
c906108c SS |
20837 | break; |
20838 | } | |
e142c38c | 20839 | cu->language_defn = language_def (cu->language); |
c906108c SS |
20840 | } |
20841 | ||
20842 | /* Return the named attribute or NULL if not there. */ | |
20843 | ||
20844 | static struct attribute * | |
e142c38c | 20845 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 20846 | { |
a48e046c | 20847 | for (;;) |
c906108c | 20848 | { |
a48e046c TT |
20849 | unsigned int i; |
20850 | struct attribute *spec = NULL; | |
20851 | ||
20852 | for (i = 0; i < die->num_attrs; ++i) | |
20853 | { | |
20854 | if (die->attrs[i].name == name) | |
20855 | return &die->attrs[i]; | |
20856 | if (die->attrs[i].name == DW_AT_specification | |
20857 | || die->attrs[i].name == DW_AT_abstract_origin) | |
20858 | spec = &die->attrs[i]; | |
20859 | } | |
20860 | ||
20861 | if (!spec) | |
20862 | break; | |
c906108c | 20863 | |
f2f0e013 | 20864 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 20865 | } |
c5aa993b | 20866 | |
c906108c SS |
20867 | return NULL; |
20868 | } | |
20869 | ||
7d45c7c3 KB |
20870 | /* Return the string associated with a string-typed attribute, or NULL if it |
20871 | is either not found or is of an incorrect type. */ | |
20872 | ||
20873 | static const char * | |
20874 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
20875 | { | |
20876 | struct attribute *attr; | |
20877 | const char *str = NULL; | |
20878 | ||
20879 | attr = dwarf2_attr (die, name, cu); | |
20880 | ||
20881 | if (attr != NULL) | |
20882 | { | |
95f982e5 | 20883 | str = attr->as_string (); |
e61108c9 | 20884 | if (str == nullptr) |
dda83cd7 | 20885 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
20886 | "DIE at %s in module %s"), |
20887 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
5e22e966 | 20888 | objfile_name (cu->per_objfile->objfile)); |
7d45c7c3 KB |
20889 | } |
20890 | ||
20891 | return str; | |
20892 | } | |
20893 | ||
a084a2a6 | 20894 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 20895 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
20896 | static const char * |
20897 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
20898 | { | |
20899 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
20900 | if (dwo_name == nullptr) | |
20901 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
20902 | return dwo_name; | |
20903 | } | |
20904 | ||
05cf31d1 JB |
20905 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
20906 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 20907 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
20908 | |
20909 | static int | |
20910 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
20911 | { | |
20912 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
20913 | ||
c45bc3f8 | 20914 | return attr != nullptr && attr->as_boolean (); |
05cf31d1 JB |
20915 | } |
20916 | ||
3ca72b44 | 20917 | static int |
e142c38c | 20918 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 20919 | { |
05cf31d1 JB |
20920 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
20921 | which value is non-zero. However, we have to be careful with | |
20922 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
20923 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
20924 | end up accidently finding a declaration attribute that belongs | |
20925 | to a different DIE referenced by the specification attribute, | |
20926 | even though the given DIE does not have a declaration attribute. */ | |
20927 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
20928 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
20929 | } |
20930 | ||
63d06c5c | 20931 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 20932 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
20933 | containing the return value on output. If there is no |
20934 | specification, but there is an abstract origin, that is | |
20935 | returned. */ | |
63d06c5c DC |
20936 | |
20937 | static struct die_info * | |
f2f0e013 | 20938 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 20939 | { |
f2f0e013 DJ |
20940 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
20941 | *spec_cu); | |
63d06c5c | 20942 | |
edb3359d DJ |
20943 | if (spec_attr == NULL) |
20944 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
20945 | ||
63d06c5c DC |
20946 | if (spec_attr == NULL) |
20947 | return NULL; | |
20948 | else | |
f2f0e013 | 20949 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 20950 | } |
c906108c | 20951 | |
527f3840 JK |
20952 | /* Stub for free_line_header to match void * callback types. */ |
20953 | ||
20954 | static void | |
20955 | free_line_header_voidp (void *arg) | |
20956 | { | |
9a3c8263 | 20957 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 20958 | |
fff8551c | 20959 | delete lh; |
527f3840 JK |
20960 | } |
20961 | ||
83769d0b | 20962 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
20963 | |
20964 | static struct dwarf2_section_info * | |
20965 | get_debug_line_section (struct dwarf2_cu *cu) | |
20966 | { | |
20967 | struct dwarf2_section_info *section; | |
976ca316 | 20968 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
36586728 TT |
20969 | |
20970 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
20971 | DWO file. */ | |
20972 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
20973 | section = &cu->dwo_unit->dwo_file->sections.line; | |
20974 | else if (cu->per_cu->is_dwz) | |
20975 | { | |
976ca316 | 20976 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
36586728 TT |
20977 | |
20978 | section = &dwz->line; | |
20979 | } | |
20980 | else | |
976ca316 | 20981 | section = &per_objfile->per_bfd->line; |
36586728 TT |
20982 | |
20983 | return section; | |
20984 | } | |
20985 | ||
debd256d | 20986 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20987 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20988 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20989 | Returns NULL if there is a problem reading the header, e.g., if it |
20990 | has a version we don't understand. | |
debd256d JB |
20991 | |
20992 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20993 | the returned object point into the dwarf line section buffer, |
20994 | and must not be freed. */ | |
ae2de4f8 | 20995 | |
fff8551c | 20996 | static line_header_up |
9c541725 | 20997 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20998 | { |
3019eac3 | 20999 | struct dwarf2_section_info *section; |
976ca316 | 21000 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 21001 | |
36586728 | 21002 | section = get_debug_line_section (cu); |
976ca316 | 21003 | section->read (per_objfile->objfile); |
3019eac3 | 21004 | if (section->buffer == NULL) |
debd256d | 21005 | { |
3019eac3 | 21006 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 21007 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 21008 | else |
b98664d3 | 21009 | complaint (_("missing .debug_line section")); |
debd256d JB |
21010 | return 0; |
21011 | } | |
21012 | ||
0df7ad3a | 21013 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
976ca316 | 21014 | per_objfile, section, &cu->header); |
debd256d | 21015 | } |
c906108c | 21016 | |
c6da4cef | 21017 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 21018 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 21019 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
21020 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
21021 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 21022 | |
d521ce57 | 21023 | static const char * |
7ba99d21 | 21024 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 21025 | const dwarf2_psymtab *pst, |
c89b44cd TT |
21026 | const char *comp_dir, |
21027 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 21028 | { |
d521ce57 TT |
21029 | const char *include_name = fe.name; |
21030 | const char *include_name_to_compare = include_name; | |
72b9f47f | 21031 | const char *pst_filename; |
c6da4cef DE |
21032 | int file_is_pst; |
21033 | ||
8c43009f | 21034 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 21035 | |
c89b44cd | 21036 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
21037 | if (!IS_ABSOLUTE_PATH (include_name) |
21038 | && (dir_name != NULL || comp_dir != NULL)) | |
21039 | { | |
21040 | /* Avoid creating a duplicate psymtab for PST. | |
21041 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
21042 | Before we do the comparison, however, we need to account | |
21043 | for DIR_NAME and COMP_DIR. | |
21044 | First prepend dir_name (if non-NULL). If we still don't | |
21045 | have an absolute path prepend comp_dir (if non-NULL). | |
21046 | However, the directory we record in the include-file's | |
21047 | psymtab does not contain COMP_DIR (to match the | |
21048 | corresponding symtab(s)). | |
21049 | ||
21050 | Example: | |
21051 | ||
21052 | bash$ cd /tmp | |
21053 | bash$ gcc -g ./hello.c | |
21054 | include_name = "hello.c" | |
21055 | dir_name = "." | |
21056 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
21057 | DW_AT_name = "./hello.c" |
21058 | ||
21059 | */ | |
c6da4cef DE |
21060 | |
21061 | if (dir_name != NULL) | |
21062 | { | |
c89b44cd TT |
21063 | name_holder->reset (concat (dir_name, SLASH_STRING, |
21064 | include_name, (char *) NULL)); | |
21065 | include_name = name_holder->get (); | |
c6da4cef | 21066 | include_name_to_compare = include_name; |
c6da4cef DE |
21067 | } |
21068 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
21069 | { | |
c89b44cd TT |
21070 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
21071 | include_name, (char *) NULL)); | |
21072 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
21073 | } |
21074 | } | |
21075 | ||
21076 | pst_filename = pst->filename; | |
c89b44cd | 21077 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
21078 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
21079 | { | |
c89b44cd TT |
21080 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
21081 | pst_filename, (char *) NULL)); | |
21082 | pst_filename = copied_name.get (); | |
c6da4cef DE |
21083 | } |
21084 | ||
1e3fad37 | 21085 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 21086 | |
c6da4cef DE |
21087 | if (file_is_pst) |
21088 | return NULL; | |
21089 | return include_name; | |
21090 | } | |
21091 | ||
d9b3de22 DE |
21092 | /* State machine to track the state of the line number program. */ |
21093 | ||
6f77053d | 21094 | class lnp_state_machine |
d9b3de22 | 21095 | { |
6f77053d PA |
21096 | public: |
21097 | /* Initialize a machine state for the start of a line number | |
21098 | program. */ | |
804d2729 TT |
21099 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
21100 | bool record_lines_p); | |
6f77053d | 21101 | |
8c43009f PA |
21102 | file_entry *current_file () |
21103 | { | |
21104 | /* lh->file_names is 0-based, but the file name numbers in the | |
21105 | statement program are 1-based. */ | |
6f77053d PA |
21106 | return m_line_header->file_name_at (m_file); |
21107 | } | |
21108 | ||
21109 | /* Record the line in the state machine. END_SEQUENCE is true if | |
21110 | we're processing the end of a sequence. */ | |
21111 | void record_line (bool end_sequence); | |
21112 | ||
a8caed5d | 21113 | /* Check ADDRESS is -1, or zero and less than UNRELOCATED_LOWPC, and if true |
7ab6656f | 21114 | nop-out rest of the lines in this sequence. */ |
6f77053d PA |
21115 | void check_line_address (struct dwarf2_cu *cu, |
21116 | const gdb_byte *line_ptr, | |
7ab6656f | 21117 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
21118 | |
21119 | void handle_set_discriminator (unsigned int discriminator) | |
21120 | { | |
21121 | m_discriminator = discriminator; | |
21122 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
21123 | } | |
21124 | ||
21125 | /* Handle DW_LNE_set_address. */ | |
21126 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
21127 | { | |
21128 | m_op_index = 0; | |
21129 | address += baseaddr; | |
21130 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
21131 | } | |
21132 | ||
21133 | /* Handle DW_LNS_advance_pc. */ | |
21134 | void handle_advance_pc (CORE_ADDR adjust); | |
21135 | ||
21136 | /* Handle a special opcode. */ | |
21137 | void handle_special_opcode (unsigned char op_code); | |
21138 | ||
21139 | /* Handle DW_LNS_advance_line. */ | |
21140 | void handle_advance_line (int line_delta) | |
21141 | { | |
21142 | advance_line (line_delta); | |
21143 | } | |
21144 | ||
21145 | /* Handle DW_LNS_set_file. */ | |
21146 | void handle_set_file (file_name_index file); | |
21147 | ||
21148 | /* Handle DW_LNS_negate_stmt. */ | |
21149 | void handle_negate_stmt () | |
21150 | { | |
21151 | m_is_stmt = !m_is_stmt; | |
21152 | } | |
21153 | ||
21154 | /* Handle DW_LNS_const_add_pc. */ | |
21155 | void handle_const_add_pc (); | |
21156 | ||
21157 | /* Handle DW_LNS_fixed_advance_pc. */ | |
21158 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
21159 | { | |
21160 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21161 | m_op_index = 0; | |
21162 | } | |
21163 | ||
21164 | /* Handle DW_LNS_copy. */ | |
21165 | void handle_copy () | |
21166 | { | |
21167 | record_line (false); | |
21168 | m_discriminator = 0; | |
21169 | } | |
21170 | ||
21171 | /* Handle DW_LNE_end_sequence. */ | |
21172 | void handle_end_sequence () | |
21173 | { | |
804d2729 | 21174 | m_currently_recording_lines = true; |
6f77053d PA |
21175 | } |
21176 | ||
21177 | private: | |
21178 | /* Advance the line by LINE_DELTA. */ | |
21179 | void advance_line (int line_delta) | |
21180 | { | |
21181 | m_line += line_delta; | |
21182 | ||
21183 | if (line_delta != 0) | |
21184 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
21185 | } |
21186 | ||
804d2729 TT |
21187 | struct dwarf2_cu *m_cu; |
21188 | ||
6f77053d PA |
21189 | gdbarch *m_gdbarch; |
21190 | ||
21191 | /* True if we're recording lines. | |
21192 | Otherwise we're building partial symtabs and are just interested in | |
21193 | finding include files mentioned by the line number program. */ | |
21194 | bool m_record_lines_p; | |
21195 | ||
8c43009f | 21196 | /* The line number header. */ |
6f77053d | 21197 | line_header *m_line_header; |
8c43009f | 21198 | |
6f77053d PA |
21199 | /* These are part of the standard DWARF line number state machine, |
21200 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 21201 | |
6f77053d | 21202 | unsigned char m_op_index = 0; |
7ba99d21 AT |
21203 | /* The line table index of the current file. */ |
21204 | file_name_index m_file = 1; | |
6f77053d PA |
21205 | unsigned int m_line = 1; |
21206 | ||
21207 | /* These are initialized in the constructor. */ | |
21208 | ||
21209 | CORE_ADDR m_address; | |
21210 | bool m_is_stmt; | |
21211 | unsigned int m_discriminator; | |
d9b3de22 DE |
21212 | |
21213 | /* Additional bits of state we need to track. */ | |
21214 | ||
21215 | /* The last file that we called dwarf2_start_subfile for. | |
21216 | This is only used for TLLs. */ | |
6f77053d | 21217 | unsigned int m_last_file = 0; |
d9b3de22 | 21218 | /* The last file a line number was recorded for. */ |
6f77053d | 21219 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 21220 | |
1313c56e AB |
21221 | /* The address of the last line entry. */ |
21222 | CORE_ADDR m_last_address; | |
21223 | ||
21224 | /* Set to true when a previous line at the same address (using | |
21225 | m_last_address) had m_is_stmt true. This is reset to false when a | |
21226 | line entry at a new address (m_address different to m_last_address) is | |
21227 | processed. */ | |
21228 | bool m_stmt_at_address = false; | |
21229 | ||
804d2729 TT |
21230 | /* When true, record the lines we decode. */ |
21231 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
21232 | |
21233 | /* The last line number that was recorded, used to coalesce | |
21234 | consecutive entries for the same line. This can happen, for | |
21235 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
21236 | unsigned int m_last_line = 0; |
21237 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 21238 | }; |
d9b3de22 | 21239 | |
6f77053d PA |
21240 | void |
21241 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
21242 | { | |
21243 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
21244 | / m_line_header->maximum_ops_per_instruction) | |
21245 | * m_line_header->minimum_instruction_length); | |
21246 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21247 | m_op_index = ((m_op_index + adjust) | |
21248 | % m_line_header->maximum_ops_per_instruction); | |
21249 | } | |
d9b3de22 | 21250 | |
6f77053d PA |
21251 | void |
21252 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 21253 | { |
6f77053d | 21254 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
21255 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
21256 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
21257 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
21258 | / m_line_header->maximum_ops_per_instruction) |
21259 | * m_line_header->minimum_instruction_length); | |
21260 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 21261 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 21262 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 21263 | |
258bf0ee | 21264 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
21265 | advance_line (line_delta); |
21266 | record_line (false); | |
21267 | m_discriminator = 0; | |
21268 | } | |
d9b3de22 | 21269 | |
6f77053d PA |
21270 | void |
21271 | lnp_state_machine::handle_set_file (file_name_index file) | |
21272 | { | |
21273 | m_file = file; | |
21274 | ||
21275 | const file_entry *fe = current_file (); | |
21276 | if (fe == NULL) | |
21277 | dwarf2_debug_line_missing_file_complaint (); | |
21278 | else if (m_record_lines_p) | |
21279 | { | |
21280 | const char *dir = fe->include_dir (m_line_header); | |
21281 | ||
c24bdb02 | 21282 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21283 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 21284 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
21285 | } |
21286 | } | |
21287 | ||
21288 | void | |
21289 | lnp_state_machine::handle_const_add_pc () | |
21290 | { | |
21291 | CORE_ADDR adjust | |
21292 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
21293 | ||
21294 | CORE_ADDR addr_adj | |
21295 | = (((m_op_index + adjust) | |
21296 | / m_line_header->maximum_ops_per_instruction) | |
21297 | * m_line_header->minimum_instruction_length); | |
21298 | ||
21299 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21300 | m_op_index = ((m_op_index + adjust) | |
21301 | % m_line_header->maximum_ops_per_instruction); | |
21302 | } | |
d9b3de22 | 21303 | |
a05a36a5 DE |
21304 | /* Return non-zero if we should add LINE to the line number table. |
21305 | LINE is the line to add, LAST_LINE is the last line that was added, | |
21306 | LAST_SUBFILE is the subfile for LAST_LINE. | |
21307 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
21308 | had a non-zero discriminator. | |
21309 | ||
21310 | We have to be careful in the presence of discriminators. | |
21311 | E.g., for this line: | |
21312 | ||
21313 | for (i = 0; i < 100000; i++); | |
21314 | ||
21315 | clang can emit four line number entries for that one line, | |
21316 | each with a different discriminator. | |
21317 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
21318 | ||
21319 | However, we want gdb to coalesce all four entries into one. | |
21320 | Otherwise the user could stepi into the middle of the line and | |
21321 | gdb would get confused about whether the pc really was in the | |
21322 | middle of the line. | |
21323 | ||
21324 | Things are further complicated by the fact that two consecutive | |
21325 | line number entries for the same line is a heuristic used by gcc | |
21326 | to denote the end of the prologue. So we can't just discard duplicate | |
21327 | entries, we have to be selective about it. The heuristic we use is | |
21328 | that we only collapse consecutive entries for the same line if at least | |
21329 | one of those entries has a non-zero discriminator. PR 17276. | |
21330 | ||
21331 | Note: Addresses in the line number state machine can never go backwards | |
21332 | within one sequence, thus this coalescing is ok. */ | |
21333 | ||
21334 | static int | |
804d2729 TT |
21335 | dwarf_record_line_p (struct dwarf2_cu *cu, |
21336 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
21337 | int line_has_non_zero_discriminator, |
21338 | struct subfile *last_subfile) | |
21339 | { | |
c24bdb02 | 21340 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
21341 | return 1; |
21342 | if (line != last_line) | |
21343 | return 1; | |
21344 | /* Same line for the same file that we've seen already. | |
21345 | As a last check, for pr 17276, only record the line if the line | |
21346 | has never had a non-zero discriminator. */ | |
21347 | if (!line_has_non_zero_discriminator) | |
21348 | return 1; | |
21349 | return 0; | |
21350 | } | |
21351 | ||
804d2729 TT |
21352 | /* Use the CU's builder to record line number LINE beginning at |
21353 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
21354 | |
21355 | static void | |
d9b3de22 | 21356 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 21357 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 21358 | struct dwarf2_cu *cu) |
252a6764 DE |
21359 | { |
21360 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
21361 | ||
27e0867f DE |
21362 | if (dwarf_line_debug) |
21363 | { | |
21364 | fprintf_unfiltered (gdb_stdlog, | |
21365 | "Recording line %u, file %s, address %s\n", | |
21366 | line, lbasename (subfile->name), | |
21367 | paddress (gdbarch, address)); | |
21368 | } | |
21369 | ||
804d2729 | 21370 | if (cu != nullptr) |
8c95582d | 21371 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
21372 | } |
21373 | ||
21374 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
21375 | Mark the end of a set of line number records. | |
d9b3de22 | 21376 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
21377 | If SUBFILE is NULL the request is ignored. */ |
21378 | ||
21379 | static void | |
21380 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 21381 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 21382 | { |
27e0867f DE |
21383 | if (subfile == NULL) |
21384 | return; | |
21385 | ||
21386 | if (dwarf_line_debug) | |
21387 | { | |
21388 | fprintf_unfiltered (gdb_stdlog, | |
21389 | "Finishing current line, file %s, address %s\n", | |
21390 | lbasename (subfile->name), | |
21391 | paddress (gdbarch, address)); | |
21392 | } | |
21393 | ||
8c95582d | 21394 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
21395 | } |
21396 | ||
6f77053d PA |
21397 | void |
21398 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 21399 | { |
d9b3de22 DE |
21400 | if (dwarf_line_debug) |
21401 | { | |
21402 | fprintf_unfiltered (gdb_stdlog, | |
21403 | "Processing actual line %u: file %u," | |
94a72be7 | 21404 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 21405 | m_line, m_file, |
6f77053d | 21406 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
21407 | m_is_stmt, m_discriminator, |
21408 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
21409 | } |
21410 | ||
6f77053d | 21411 | file_entry *fe = current_file (); |
8c43009f PA |
21412 | |
21413 | if (fe == NULL) | |
d9b3de22 DE |
21414 | dwarf2_debug_line_missing_file_complaint (); |
21415 | /* For now we ignore lines not starting on an instruction boundary. | |
21416 | But not when processing end_sequence for compatibility with the | |
21417 | previous version of the code. */ | |
6f77053d | 21418 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 21419 | { |
8c43009f | 21420 | fe->included_p = 1; |
8c95582d | 21421 | if (m_record_lines_p) |
d9b3de22 | 21422 | { |
1313c56e AB |
21423 | /* When we switch files we insert an end maker in the first file, |
21424 | switch to the second file and add a new line entry. The | |
21425 | problem is that the end marker inserted in the first file will | |
21426 | discard any previous line entries at the same address. If the | |
21427 | line entries in the first file are marked as is-stmt, while | |
21428 | the new line in the second file is non-stmt, then this means | |
21429 | the end marker will discard is-stmt lines so we can have a | |
21430 | non-stmt line. This means that there are less addresses at | |
21431 | which the user can insert a breakpoint. | |
21432 | ||
21433 | To improve this we track the last address in m_last_address, | |
21434 | and whether we have seen an is-stmt at this address. Then | |
21435 | when switching files, if we have seen a stmt at the current | |
21436 | address, and we are switching to create a non-stmt line, then | |
21437 | discard the new line. */ | |
21438 | bool file_changed | |
21439 | = m_last_subfile != m_cu->get_builder ()->get_current_subfile (); | |
21440 | bool ignore_this_line | |
dda83cd7 SM |
21441 | = ((file_changed && !end_sequence && m_last_address == m_address |
21442 | && !m_is_stmt && m_stmt_at_address) | |
21443 | || (!end_sequence && m_line == 0)); | |
1313c56e AB |
21444 | |
21445 | if ((file_changed && !ignore_this_line) || end_sequence) | |
d9b3de22 | 21446 | { |
804d2729 TT |
21447 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
21448 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
21449 | } |
21450 | ||
1313c56e | 21451 | if (!end_sequence && !ignore_this_line) |
d9b3de22 | 21452 | { |
8c95582d AB |
21453 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
21454 | ||
804d2729 | 21455 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
21456 | m_line_has_non_zero_discriminator, |
21457 | m_last_subfile)) | |
d9b3de22 | 21458 | { |
c24bdb02 | 21459 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 21460 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 21461 | builder->get_current_subfile (), |
8c95582d | 21462 | m_line, m_address, is_stmt, |
804d2729 | 21463 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 21464 | } |
c24bdb02 | 21465 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21466 | m_last_line = m_line; |
d9b3de22 DE |
21467 | } |
21468 | } | |
21469 | } | |
1313c56e AB |
21470 | |
21471 | /* Track whether we have seen any m_is_stmt true at m_address in case we | |
21472 | have multiple line table entries all at m_address. */ | |
21473 | if (m_last_address != m_address) | |
21474 | { | |
21475 | m_stmt_at_address = false; | |
21476 | m_last_address = m_address; | |
21477 | } | |
21478 | m_stmt_at_address |= m_is_stmt; | |
d9b3de22 DE |
21479 | } |
21480 | ||
804d2729 TT |
21481 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
21482 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 21483 | { |
804d2729 | 21484 | m_cu = cu; |
6f77053d PA |
21485 | m_gdbarch = arch; |
21486 | m_record_lines_p = record_lines_p; | |
21487 | m_line_header = lh; | |
d9b3de22 | 21488 | |
804d2729 | 21489 | m_currently_recording_lines = true; |
d9b3de22 | 21490 | |
d9b3de22 DE |
21491 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
21492 | was a line entry for it so that the backend has a chance to adjust it | |
21493 | and also record it in case it needs it. This is currently used by MIPS | |
21494 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
21495 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
21496 | m_is_stmt = lh->default_is_stmt; | |
21497 | m_discriminator = 0; | |
1313c56e AB |
21498 | |
21499 | m_last_address = m_address; | |
21500 | m_stmt_at_address = false; | |
252a6764 DE |
21501 | } |
21502 | ||
6f77053d PA |
21503 | void |
21504 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
21505 | const gdb_byte *line_ptr, | |
7ab6656f | 21506 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 21507 | { |
a8caed5d FS |
21508 | /* Linkers resolve a symbolic relocation referencing a GC'd function to 0 or |
21509 | -1. If ADDRESS is 0, ignoring the opcode will err if the text section is | |
21510 | located at 0x0. In this case, additionally check that if | |
21511 | ADDRESS < UNRELOCATED_LOWPC. */ | |
924c2928 | 21512 | |
a8caed5d FS |
21513 | if ((address == 0 && address < unrelocated_lowpc) |
21514 | || address == (CORE_ADDR) -1) | |
924c2928 DE |
21515 | { |
21516 | /* This line table is for a function which has been | |
21517 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
21518 | ||
5e22e966 | 21519 | struct objfile *objfile = cu->per_objfile->objfile; |
924c2928 DE |
21520 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
21521 | ||
b98664d3 | 21522 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 21523 | line_offset, objfile_name (objfile)); |
804d2729 TT |
21524 | m_currently_recording_lines = false; |
21525 | /* Note: m_currently_recording_lines is left as false until we see | |
21526 | DW_LNE_end_sequence. */ | |
924c2928 DE |
21527 | } |
21528 | } | |
21529 | ||
f3f5162e | 21530 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
21531 | Process the line number information in LH. |
21532 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
21533 | program in order to set included_p for every referenced header. */ | |
debd256d | 21534 | |
c906108c | 21535 | static void |
43f3e411 DE |
21536 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
21537 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 21538 | { |
d521ce57 TT |
21539 | const gdb_byte *line_ptr, *extended_end; |
21540 | const gdb_byte *line_end; | |
a8c50c1f | 21541 | unsigned int bytes_read, extended_len; |
699ca60a | 21542 | unsigned char op_code, extended_op; |
e142c38c | 21543 | CORE_ADDR baseaddr; |
5e22e966 | 21544 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21545 | bfd *abfd = objfile->obfd; |
08feed99 | 21546 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
21547 | /* True if we're recording line info (as opposed to building partial |
21548 | symtabs and just interested in finding include files mentioned by | |
21549 | the line number program). */ | |
21550 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 21551 | |
b3b3bada | 21552 | baseaddr = objfile->text_section_offset (); |
c906108c | 21553 | |
debd256d JB |
21554 | line_ptr = lh->statement_program_start; |
21555 | line_end = lh->statement_program_end; | |
c906108c SS |
21556 | |
21557 | /* Read the statement sequences until there's nothing left. */ | |
21558 | while (line_ptr < line_end) | |
21559 | { | |
6f77053d PA |
21560 | /* The DWARF line number program state machine. Reset the state |
21561 | machine at the start of each sequence. */ | |
804d2729 | 21562 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 21563 | bool end_sequence = false; |
d9b3de22 | 21564 | |
8c43009f | 21565 | if (record_lines_p) |
c906108c | 21566 | { |
8c43009f PA |
21567 | /* Start a subfile for the current file of the state |
21568 | machine. */ | |
21569 | const file_entry *fe = state_machine.current_file (); | |
21570 | ||
21571 | if (fe != NULL) | |
804d2729 | 21572 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
21573 | } |
21574 | ||
a738430d | 21575 | /* Decode the table. */ |
d9b3de22 | 21576 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
21577 | { |
21578 | op_code = read_1_byte (abfd, line_ptr); | |
21579 | line_ptr += 1; | |
9aa1fe7e | 21580 | |
debd256d | 21581 | if (op_code >= lh->opcode_base) |
6e70227d | 21582 | { |
8e07a239 | 21583 | /* Special opcode. */ |
6f77053d | 21584 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
21585 | } |
21586 | else switch (op_code) | |
c906108c SS |
21587 | { |
21588 | case DW_LNS_extended_op: | |
3e43a32a MS |
21589 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
21590 | &bytes_read); | |
473b7be6 | 21591 | line_ptr += bytes_read; |
a8c50c1f | 21592 | extended_end = line_ptr + extended_len; |
c906108c SS |
21593 | extended_op = read_1_byte (abfd, line_ptr); |
21594 | line_ptr += 1; | |
8f34b746 TV |
21595 | if (DW_LNE_lo_user <= extended_op |
21596 | && extended_op <= DW_LNE_hi_user) | |
21597 | { | |
21598 | /* Vendor extension, ignore. */ | |
21599 | line_ptr = extended_end; | |
21600 | break; | |
21601 | } | |
c906108c SS |
21602 | switch (extended_op) |
21603 | { | |
21604 | case DW_LNE_end_sequence: | |
6f77053d PA |
21605 | state_machine.handle_end_sequence (); |
21606 | end_sequence = true; | |
c906108c SS |
21607 | break; |
21608 | case DW_LNE_set_address: | |
d9b3de22 DE |
21609 | { |
21610 | CORE_ADDR address | |
c8a7a66f | 21611 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 21612 | line_ptr += bytes_read; |
6f77053d PA |
21613 | |
21614 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 21615 | lowpc - baseaddr, address); |
6f77053d | 21616 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 21617 | } |
c906108c SS |
21618 | break; |
21619 | case DW_LNE_define_file: | |
dda83cd7 SM |
21620 | { |
21621 | const char *cur_file; | |
ecfb656c PA |
21622 | unsigned int mod_time, length; |
21623 | dir_index dindex; | |
6e70227d | 21624 | |
dda83cd7 | 21625 | cur_file = read_direct_string (abfd, line_ptr, |
3e43a32a | 21626 | &bytes_read); |
dda83cd7 SM |
21627 | line_ptr += bytes_read; |
21628 | dindex = (dir_index) | |
21629 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21630 | line_ptr += bytes_read; | |
21631 | mod_time = | |
21632 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21633 | line_ptr += bytes_read; | |
21634 | length = | |
21635 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21636 | line_ptr += bytes_read; | |
21637 | lh->add_file_name (cur_file, dindex, mod_time, length); | |
21638 | } | |
c906108c | 21639 | break; |
d0c6ba3d | 21640 | case DW_LNE_set_discriminator: |
6f77053d PA |
21641 | { |
21642 | /* The discriminator is not interesting to the | |
21643 | debugger; just ignore it. We still need to | |
21644 | check its value though: | |
21645 | if there are consecutive entries for the same | |
21646 | (non-prologue) line we want to coalesce them. | |
21647 | PR 17276. */ | |
21648 | unsigned int discr | |
21649 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21650 | line_ptr += bytes_read; | |
21651 | ||
21652 | state_machine.handle_set_discriminator (discr); | |
21653 | } | |
d0c6ba3d | 21654 | break; |
c906108c | 21655 | default: |
b98664d3 | 21656 | complaint (_("mangled .debug_line section")); |
debd256d | 21657 | return; |
c906108c | 21658 | } |
a8c50c1f DJ |
21659 | /* Make sure that we parsed the extended op correctly. If e.g. |
21660 | we expected a different address size than the producer used, | |
21661 | we may have read the wrong number of bytes. */ | |
21662 | if (line_ptr != extended_end) | |
21663 | { | |
b98664d3 | 21664 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
21665 | return; |
21666 | } | |
c906108c SS |
21667 | break; |
21668 | case DW_LNS_copy: | |
6f77053d | 21669 | state_machine.handle_copy (); |
c906108c SS |
21670 | break; |
21671 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21672 | { |
21673 | CORE_ADDR adjust | |
21674 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21675 | line_ptr += bytes_read; |
6f77053d PA |
21676 | |
21677 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21678 | } |
c906108c SS |
21679 | break; |
21680 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21681 | { |
21682 | int line_delta | |
21683 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21684 | line_ptr += bytes_read; |
6f77053d PA |
21685 | |
21686 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21687 | } |
c906108c SS |
21688 | break; |
21689 | case DW_LNS_set_file: | |
d9b3de22 | 21690 | { |
6f77053d | 21691 | file_name_index file |
ecfb656c PA |
21692 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21693 | &bytes_read); | |
d9b3de22 | 21694 | line_ptr += bytes_read; |
8c43009f | 21695 | |
6f77053d | 21696 | state_machine.handle_set_file (file); |
d9b3de22 | 21697 | } |
c906108c SS |
21698 | break; |
21699 | case DW_LNS_set_column: | |
0ad93d4f | 21700 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21701 | line_ptr += bytes_read; |
21702 | break; | |
21703 | case DW_LNS_negate_stmt: | |
6f77053d | 21704 | state_machine.handle_negate_stmt (); |
c906108c SS |
21705 | break; |
21706 | case DW_LNS_set_basic_block: | |
c906108c | 21707 | break; |
c2c6d25f JM |
21708 | /* Add to the address register of the state machine the |
21709 | address increment value corresponding to special opcode | |
a738430d MK |
21710 | 255. I.e., this value is scaled by the minimum |
21711 | instruction length since special opcode 255 would have | |
b021a221 | 21712 | scaled the increment. */ |
c906108c | 21713 | case DW_LNS_const_add_pc: |
6f77053d | 21714 | state_machine.handle_const_add_pc (); |
c906108c SS |
21715 | break; |
21716 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21717 | { |
6f77053d | 21718 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21719 | line_ptr += 2; |
6f77053d PA |
21720 | |
21721 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21722 | } |
c906108c | 21723 | break; |
9aa1fe7e | 21724 | default: |
a738430d MK |
21725 | { |
21726 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21727 | int i; |
a738430d | 21728 | |
debd256d | 21729 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21730 | { |
21731 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21732 | line_ptr += bytes_read; | |
21733 | } | |
21734 | } | |
c906108c SS |
21735 | } |
21736 | } | |
d9b3de22 DE |
21737 | |
21738 | if (!end_sequence) | |
21739 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21740 | ||
21741 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21742 | in which case we still finish recording the last line). */ | |
6f77053d | 21743 | state_machine.record_line (true); |
c906108c | 21744 | } |
f3f5162e DE |
21745 | } |
21746 | ||
21747 | /* Decode the Line Number Program (LNP) for the given line_header | |
21748 | structure and CU. The actual information extracted and the type | |
21749 | of structures created from the LNP depends on the value of PST. | |
21750 | ||
21751 | 1. If PST is NULL, then this procedure uses the data from the program | |
21752 | to create all necessary symbol tables, and their linetables. | |
21753 | ||
21754 | 2. If PST is not NULL, this procedure reads the program to determine | |
21755 | the list of files included by the unit represented by PST, and | |
21756 | builds all the associated partial symbol tables. | |
21757 | ||
21758 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21759 | It is used for relative paths in the line table. | |
21760 | NOTE: When processing partial symtabs (pst != NULL), | |
21761 | comp_dir == pst->dirname. | |
21762 | ||
21763 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21764 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21765 | symtab we don't use it in the name of the psymtabs we create. | |
21766 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21767 | A good testcase for this is mb-inline.exp. |
21768 | ||
527f3840 JK |
21769 | LOWPC is the lowest address in CU (or 0 if not known). |
21770 | ||
21771 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21772 | for its PC<->lines mapping information. Otherwise only the filename | |
21773 | table is read in. */ | |
f3f5162e DE |
21774 | |
21775 | static void | |
21776 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 21777 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 21778 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21779 | { |
5e22e966 | 21780 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21781 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21782 | |
527f3840 JK |
21783 | if (decode_mapping) |
21784 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21785 | |
21786 | if (decode_for_pst_p) | |
21787 | { | |
aaa75496 | 21788 | /* Now that we're done scanning the Line Header Program, we can |
dda83cd7 | 21789 | create the psymtab of each included file. */ |
7ba99d21 | 21790 | for (auto &file_entry : lh->file_names ()) |
dda83cd7 SM |
21791 | if (file_entry.included_p == 1) |
21792 | { | |
c89b44cd | 21793 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21794 | const char *include_name = |
7ba99d21 AT |
21795 | psymtab_include_file_name (lh, file_entry, pst, |
21796 | comp_dir, &name_holder); | |
c6da4cef | 21797 | if (include_name != NULL) |
dda83cd7 SM |
21798 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21799 | } | |
aaa75496 | 21800 | } |
cb1df416 DJ |
21801 | else |
21802 | { | |
21803 | /* Make sure a symtab is created for every file, even files | |
21804 | which contain only variables (i.e. no code with associated | |
21805 | line numbers). */ | |
c24bdb02 KS |
21806 | buildsym_compunit *builder = cu->get_builder (); |
21807 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 21808 | |
7ba99d21 | 21809 | for (auto &fe : lh->file_names ()) |
cb1df416 | 21810 | { |
804d2729 | 21811 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 21812 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 21813 | { |
c24bdb02 | 21814 | builder->get_current_subfile ()->symtab |
804d2729 | 21815 | = allocate_symtab (cust, |
c24bdb02 | 21816 | builder->get_current_subfile ()->name); |
43f3e411 | 21817 | } |
c24bdb02 | 21818 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
21819 | } |
21820 | } | |
c906108c SS |
21821 | } |
21822 | ||
21823 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21824 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21825 | or NULL if not known. |
c906108c SS |
21826 | This routine tries to keep line numbers from identical absolute and |
21827 | relative file names in a common subfile. | |
21828 | ||
21829 | Using the `list' example from the GDB testsuite, which resides in | |
21830 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21831 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21832 | ||
c5aa993b | 21833 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21834 | DW_AT_comp_dir: /compdir |
357e46e7 | 21835 | files.files[0].name: list0.h |
c5aa993b | 21836 | files.files[0].dir: /srcdir |
357e46e7 | 21837 | files.files[1].name: list0.c |
c5aa993b | 21838 | files.files[1].dir: /srcdir |
c906108c SS |
21839 | |
21840 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21841 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21842 | start_subfile will ensure that this happens provided that we pass the | |
21843 | concatenation of files.files[1].dir and files.files[1].name as the | |
21844 | subfile's name. */ | |
c906108c SS |
21845 | |
21846 | static void | |
804d2729 TT |
21847 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
21848 | const char *dirname) | |
c906108c | 21849 | { |
43816ebc | 21850 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 21851 | |
4d663531 | 21852 | /* In order not to lose the line information directory, |
4f1520fb FR |
21853 | we concatenate it to the filename when it makes sense. |
21854 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21855 | information): ``The directory index is ignored for file names | |
21856 | that represent full path names''. Thus ignoring dirname in the | |
21857 | `else' branch below isn't an issue. */ | |
c906108c | 21858 | |
d5166ae1 | 21859 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 21860 | { |
43816ebc TT |
21861 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
21862 | filename = copy.get (); | |
d521ce57 | 21863 | } |
c906108c | 21864 | |
c24bdb02 | 21865 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
21866 | } |
21867 | ||
804d2729 TT |
21868 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
21869 | buildsym_compunit constructor. */ | |
f4dc4d17 | 21870 | |
c24bdb02 KS |
21871 | struct compunit_symtab * |
21872 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
21873 | CORE_ADDR low_pc) | |
f4dc4d17 | 21874 | { |
c24bdb02 | 21875 | gdb_assert (m_builder == nullptr); |
43f3e411 | 21876 | |
c24bdb02 | 21877 | m_builder.reset (new struct buildsym_compunit |
f6e649dd | 21878 | (this->per_objfile->objfile, |
c24bdb02 | 21879 | name, comp_dir, language, low_pc)); |
93b8bea4 | 21880 | |
c24bdb02 | 21881 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 21882 | |
c24bdb02 KS |
21883 | get_builder ()->record_debugformat ("DWARF 2"); |
21884 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 21885 | |
c24bdb02 | 21886 | processing_has_namespace_info = false; |
43f3e411 | 21887 | |
c24bdb02 | 21888 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
21889 | } |
21890 | ||
4c2df51b DJ |
21891 | static void |
21892 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21893 | struct dwarf2_cu *cu) |
4c2df51b | 21894 | { |
5e22e966 | 21895 | struct objfile *objfile = cu->per_objfile->objfile; |
e7c27a73 DJ |
21896 | struct comp_unit_head *cu_header = &cu->header; |
21897 | ||
4c2df51b DJ |
21898 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21899 | code here to turn a symbol with DW_AT_external and a | |
21900 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21901 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21902 | with some versions of binutils) where shared libraries could have | |
21903 | relocations against symbols in their debug information - the | |
21904 | minimal symbol would have the right address, but the debug info | |
21905 | would not. It's no longer necessary, because we will explicitly | |
21906 | apply relocations when we read in the debug information now. */ | |
21907 | ||
21908 | /* A DW_AT_location attribute with no contents indicates that a | |
21909 | variable has been optimized away. */ | |
9d2246fc | 21910 | if (attr->form_is_block () && attr->as_block ()->size == 0) |
4c2df51b | 21911 | { |
f1e6e072 | 21912 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21913 | return; |
21914 | } | |
21915 | ||
21916 | /* Handle one degenerate form of location expression specially, to | |
21917 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
21918 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
21919 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 21920 | |
9d2246fc TT |
21921 | if (attr->form_is_block ()) |
21922 | { | |
21923 | struct dwarf_block *block = attr->as_block (); | |
21924 | ||
21925 | if ((block->data[0] == DW_OP_addr | |
21926 | && block->size == 1 + cu_header->addr_size) | |
21927 | || ((block->data[0] == DW_OP_GNU_addr_index | |
dda83cd7 | 21928 | || block->data[0] == DW_OP_addrx) |
9d2246fc TT |
21929 | && (block->size |
21930 | == 1 + leb128_size (&block->data[1])))) | |
21931 | { | |
21932 | unsigned int dummy; | |
21933 | ||
21934 | if (block->data[0] == DW_OP_addr) | |
21935 | SET_SYMBOL_VALUE_ADDRESS | |
21936 | (sym, cu->header.read_address (objfile->obfd, | |
21937 | block->data + 1, | |
38583298 | 21938 | &dummy)); |
9d2246fc TT |
21939 | else |
21940 | SET_SYMBOL_VALUE_ADDRESS | |
21941 | (sym, read_addr_index_from_leb128 (cu, block->data + 1, | |
21942 | &dummy)); | |
21943 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; | |
21944 | fixup_symbol_section (sym, objfile); | |
21945 | SET_SYMBOL_VALUE_ADDRESS | |
21946 | (sym, | |
21947 | SYMBOL_VALUE_ADDRESS (sym) | |
21948 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
21949 | return; | |
21950 | } | |
4c2df51b DJ |
21951 | } |
21952 | ||
21953 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21954 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21955 | (i.e. when the value of a register or memory location is | |
21956 | referenced, or a thread-local block, etc.). Then again, it might | |
21957 | not be worthwhile. I'm assuming that it isn't unless performance | |
21958 | or memory numbers show me otherwise. */ | |
21959 | ||
f1e6e072 | 21960 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21961 | |
f1e6e072 | 21962 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 21963 | cu->has_loclist = true; |
4c2df51b DJ |
21964 | } |
21965 | ||
c906108c SS |
21966 | /* Given a pointer to a DWARF information entry, figure out if we need |
21967 | to make a symbol table entry for it, and if so, create a new entry | |
21968 | and return a pointer to it. | |
21969 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21970 | used the passed type. |
21971 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21972 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21973 | |
21974 | static struct symbol * | |
5e2db402 TT |
21975 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21976 | struct symbol *space) | |
c906108c | 21977 | { |
976ca316 SM |
21978 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
21979 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 21980 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 21981 | struct symbol *sym = NULL; |
15d034d0 | 21982 | const char *name; |
c906108c SS |
21983 | struct attribute *attr = NULL; |
21984 | struct attribute *attr2 = NULL; | |
e142c38c | 21985 | CORE_ADDR baseaddr; |
e37fd15a SW |
21986 | struct pending **list_to_add = NULL; |
21987 | ||
edb3359d | 21988 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 21989 | |
b3b3bada | 21990 | baseaddr = objfile->text_section_offset (); |
c906108c | 21991 | |
94af9270 | 21992 | name = dwarf2_name (die, cu); |
c906108c SS |
21993 | if (name) |
21994 | { | |
34eaf542 | 21995 | int suppress_add = 0; |
94af9270 | 21996 | |
34eaf542 TT |
21997 | if (space) |
21998 | sym = space; | |
21999 | else | |
8c14c3a3 | 22000 | sym = new (&objfile->objfile_obstack) symbol; |
c906108c | 22001 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
22002 | |
22003 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 22004 | sym->set_language (cu->language, &objfile->objfile_obstack); |
f55ee35c JK |
22005 | /* Fortran does not have mangling standard and the mangling does differ |
22006 | between gfortran, iFort etc. */ | |
bcfe6157 TT |
22007 | const char *physname |
22008 | = (cu->language == language_fortran | |
22009 | ? dwarf2_full_name (name, die, cu) | |
22010 | : dwarf2_physname (name, die, cu)); | |
22011 | const char *linkagename = dw2_linkage_name (die, cu); | |
22012 | ||
22013 | if (linkagename == nullptr || cu->language == language_ada) | |
22014 | sym->set_linkage_name (physname); | |
22015 | else | |
22016 | { | |
22017 | sym->set_demangled_name (physname, &objfile->objfile_obstack); | |
22018 | sym->set_linkage_name (linkagename); | |
22019 | } | |
f55ee35c | 22020 | |
c906108c | 22021 | /* Default assumptions. |
dda83cd7 | 22022 | Use the passed type or decode it from the die. */ |
176620f1 | 22023 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 22024 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
22025 | if (type != NULL) |
22026 | SYMBOL_TYPE (sym) = type; | |
22027 | else | |
e7c27a73 | 22028 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
22029 | attr = dwarf2_attr (die, |
22030 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
22031 | cu); | |
435d3d88 | 22032 | if (attr != nullptr) |
529908cb | 22033 | SYMBOL_LINE (sym) = attr->constant_value (0); |
cb1df416 | 22034 | |
edb3359d DJ |
22035 | attr = dwarf2_attr (die, |
22036 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
22037 | cu); | |
529908cb | 22038 | if (attr != nullptr && attr->form_is_unsigned ()) |
cb1df416 | 22039 | { |
529908cb TT |
22040 | file_name_index file_index |
22041 | = (file_name_index) attr->as_unsigned (); | |
8c43009f | 22042 | struct file_entry *fe; |
9a619af0 | 22043 | |
ecfb656c PA |
22044 | if (cu->line_header != NULL) |
22045 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
22046 | else |
22047 | fe = NULL; | |
22048 | ||
22049 | if (fe == NULL) | |
b98664d3 | 22050 | complaint (_("file index out of range")); |
8c43009f PA |
22051 | else |
22052 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
22053 | } |
22054 | ||
c906108c SS |
22055 | switch (die->tag) |
22056 | { | |
22057 | case DW_TAG_label: | |
e142c38c | 22058 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 22059 | if (attr != nullptr) |
3e29f34a MR |
22060 | { |
22061 | CORE_ADDR addr; | |
22062 | ||
95f982e5 | 22063 | addr = attr->as_address (); |
3e29f34a | 22064 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 22065 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
8f5c6526 | 22066 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
3e29f34a | 22067 | } |
8f5c6526 TV |
22068 | else |
22069 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; | |
0f5238ed TT |
22070 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
22071 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
d3cb6808 | 22072 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
22073 | break; |
22074 | case DW_TAG_subprogram: | |
22075 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
22076 | finish_block. */ | |
f1e6e072 | 22077 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 22078 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 22079 | if ((attr2 != nullptr && attr2->as_boolean ()) |
0a4b0913 AB |
22080 | || cu->language == language_ada |
22081 | || cu->language == language_fortran) | |
c906108c | 22082 | { |
dda83cd7 SM |
22083 | /* Subprograms marked external are stored as a global symbol. |
22084 | Ada and Fortran subprograms, whether marked external or | |
22085 | not, are always stored as a global symbol, because we want | |
22086 | to be able to access them globally. For instance, we want | |
22087 | to be able to break on a nested subprogram without having | |
22088 | to specify the context. */ | |
c24bdb02 | 22089 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
22090 | } |
22091 | else | |
22092 | { | |
e37fd15a | 22093 | list_to_add = cu->list_in_scope; |
c906108c SS |
22094 | } |
22095 | break; | |
edb3359d DJ |
22096 | case DW_TAG_inlined_subroutine: |
22097 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
22098 | finish_block. */ | |
f1e6e072 | 22099 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 22100 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 22101 | list_to_add = cu->list_in_scope; |
edb3359d | 22102 | break; |
34eaf542 TT |
22103 | case DW_TAG_template_value_param: |
22104 | suppress_add = 1; | |
22105 | /* Fall through. */ | |
72929c62 | 22106 | case DW_TAG_constant: |
c906108c | 22107 | case DW_TAG_variable: |
254e6b9e | 22108 | case DW_TAG_member: |
0963b4bd MS |
22109 | /* Compilation with minimal debug info may result in |
22110 | variables with missing type entries. Change the | |
22111 | misleading `void' type to something sensible. */ | |
78134374 | 22112 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_VOID) |
46a4882b | 22113 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 22114 | |
e142c38c | 22115 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
22116 | /* In the case of DW_TAG_member, we should only be called for |
22117 | static const members. */ | |
22118 | if (die->tag == DW_TAG_member) | |
22119 | { | |
3863f96c DE |
22120 | /* dwarf2_add_field uses die_is_declaration, |
22121 | so we do the same. */ | |
254e6b9e DE |
22122 | gdb_assert (die_is_declaration (die, cu)); |
22123 | gdb_assert (attr); | |
22124 | } | |
435d3d88 | 22125 | if (attr != nullptr) |
c906108c | 22126 | { |
e7c27a73 | 22127 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 22128 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 22129 | if (!suppress_add) |
34eaf542 | 22130 | { |
c45bc3f8 | 22131 | if (attr2 != nullptr && attr2->as_boolean ()) |
c24bdb02 | 22132 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 22133 | else |
e37fd15a | 22134 | list_to_add = cu->list_in_scope; |
34eaf542 | 22135 | } |
c906108c SS |
22136 | break; |
22137 | } | |
e142c38c | 22138 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 22139 | if (attr != nullptr) |
c906108c | 22140 | { |
e7c27a73 | 22141 | var_decode_location (attr, sym, cu); |
e142c38c | 22142 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
22143 | |
22144 | /* Fortran explicitly imports any global symbols to the local | |
22145 | scope by DW_TAG_common_block. */ | |
22146 | if (cu->language == language_fortran && die->parent | |
22147 | && die->parent->tag == DW_TAG_common_block) | |
22148 | attr2 = NULL; | |
22149 | ||
caac4577 JG |
22150 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
22151 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
976ca316 | 22152 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
22153 | { |
22154 | /* When a static variable is eliminated by the linker, | |
22155 | the corresponding debug information is not stripped | |
22156 | out, but the variable address is set to null; | |
22157 | do not add such variables into symbol table. */ | |
22158 | } | |
c45bc3f8 | 22159 | else if (attr2 != nullptr && attr2->as_boolean ()) |
1c809c68 | 22160 | { |
4b610737 TT |
22161 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
22162 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
976ca316 | 22163 | && per_objfile->per_bfd->can_copy) |
4b610737 TT |
22164 | { |
22165 | /* A global static variable might be subject to | |
22166 | copy relocation. We first check for a local | |
22167 | minsym, though, because maybe the symbol was | |
22168 | marked hidden, in which case this would not | |
22169 | apply. */ | |
22170 | bound_minimal_symbol found | |
22171 | = (lookup_minimal_symbol_linkage | |
987012b8 | 22172 | (sym->linkage_name (), objfile)); |
4b610737 TT |
22173 | if (found.minsym != nullptr) |
22174 | sym->maybe_copied = 1; | |
22175 | } | |
f55ee35c | 22176 | |
1c809c68 TT |
22177 | /* A variable with DW_AT_external is never static, |
22178 | but it may be block-scoped. */ | |
804d2729 | 22179 | list_to_add |
c24bdb02 KS |
22180 | = ((cu->list_in_scope |
22181 | == cu->get_builder ()->get_file_symbols ()) | |
22182 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22183 | : cu->list_in_scope); |
1c809c68 | 22184 | } |
c906108c | 22185 | else |
e37fd15a | 22186 | list_to_add = cu->list_in_scope; |
c906108c SS |
22187 | } |
22188 | else | |
22189 | { | |
22190 | /* We do not know the address of this symbol. | |
dda83cd7 SM |
22191 | If it is an external symbol and we have type information |
22192 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
22193 | The address of the variable will then be determined from | |
22194 | the minimal symbol table whenever the variable is | |
22195 | referenced. */ | |
e142c38c | 22196 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
22197 | |
22198 | /* Fortran explicitly imports any global symbols to the local | |
22199 | scope by DW_TAG_common_block. */ | |
22200 | if (cu->language == language_fortran && die->parent | |
22201 | && die->parent->tag == DW_TAG_common_block) | |
22202 | { | |
22203 | /* SYMBOL_CLASS doesn't matter here because | |
22204 | read_common_block is going to reset it. */ | |
22205 | if (!suppress_add) | |
22206 | list_to_add = cu->list_in_scope; | |
22207 | } | |
c45bc3f8 | 22208 | else if (attr2 != nullptr && attr2->as_boolean () |
0971de02 | 22209 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 22210 | { |
0fe7935b DJ |
22211 | /* A variable with DW_AT_external is never static, but it |
22212 | may be block-scoped. */ | |
804d2729 | 22213 | list_to_add |
c24bdb02 KS |
22214 | = ((cu->list_in_scope |
22215 | == cu->get_builder ()->get_file_symbols ()) | |
22216 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22217 | : cu->list_in_scope); |
0fe7935b | 22218 | |
f1e6e072 | 22219 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 22220 | } |
442ddf59 JK |
22221 | else if (!die_is_declaration (die, cu)) |
22222 | { | |
22223 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
22224 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
22225 | if (!suppress_add) |
22226 | list_to_add = cu->list_in_scope; | |
442ddf59 | 22227 | } |
c906108c SS |
22228 | } |
22229 | break; | |
22230 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
22231 | { |
22232 | /* If we are inside a function, mark this as an argument. If | |
22233 | not, we might be looking at an argument to an inlined function | |
22234 | when we do not have enough information to show inlined frames; | |
22235 | pretend it's a local variable in that case so that the user can | |
22236 | still see it. */ | |
804d2729 | 22237 | struct context_stack *curr |
c24bdb02 | 22238 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
22239 | if (curr != nullptr && curr->name != nullptr) |
22240 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
22241 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 22242 | if (attr != nullptr) |
a60f3166 TT |
22243 | { |
22244 | var_decode_location (attr, sym, cu); | |
22245 | } | |
22246 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 22247 | if (attr != nullptr) |
a60f3166 TT |
22248 | { |
22249 | dwarf2_const_value (attr, sym, cu); | |
22250 | } | |
f346a30d | 22251 | |
a60f3166 TT |
22252 | list_to_add = cu->list_in_scope; |
22253 | } | |
c906108c SS |
22254 | break; |
22255 | case DW_TAG_unspecified_parameters: | |
22256 | /* From varargs functions; gdb doesn't seem to have any | |
22257 | interest in this information, so just ignore it for now. | |
22258 | (FIXME?) */ | |
22259 | break; | |
34eaf542 TT |
22260 | case DW_TAG_template_type_param: |
22261 | suppress_add = 1; | |
22262 | /* Fall through. */ | |
c906108c | 22263 | case DW_TAG_class_type: |
680b30c7 | 22264 | case DW_TAG_interface_type: |
c906108c SS |
22265 | case DW_TAG_structure_type: |
22266 | case DW_TAG_union_type: | |
72019c9c | 22267 | case DW_TAG_set_type: |
c906108c | 22268 | case DW_TAG_enumeration_type: |
f1e6e072 | 22269 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22270 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 22271 | |
63d06c5c | 22272 | { |
9c37b5ae | 22273 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
22274 | really ever be static objects: otherwise, if you try |
22275 | to, say, break of a class's method and you're in a file | |
22276 | which doesn't mention that class, it won't work unless | |
22277 | the check for all static symbols in lookup_symbol_aux | |
22278 | saves you. See the OtherFileClass tests in | |
22279 | gdb.c++/namespace.exp. */ | |
22280 | ||
e37fd15a | 22281 | if (!suppress_add) |
34eaf542 | 22282 | { |
c24bdb02 | 22283 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 22284 | list_to_add |
c24bdb02 | 22285 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 22286 | && cu->language == language_cplus |
c24bdb02 | 22287 | ? builder->get_global_symbols () |
804d2729 | 22288 | : cu->list_in_scope); |
63d06c5c | 22289 | |
64382290 | 22290 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 22291 | ... }" also defines a typedef for "foo". */ |
64382290 | 22292 | if (cu->language == language_cplus |
45280282 | 22293 | || cu->language == language_ada |
c44af4eb TT |
22294 | || cu->language == language_d |
22295 | || cu->language == language_rust) | |
64382290 TT |
22296 | { |
22297 | /* The symbol's name is already allocated along | |
22298 | with this objfile, so we don't need to | |
22299 | duplicate it for the type. */ | |
7d93a1e0 | 22300 | if (SYMBOL_TYPE (sym)->name () == 0) |
d0e39ea2 | 22301 | SYMBOL_TYPE (sym)->set_name (sym->search_name ()); |
64382290 | 22302 | } |
63d06c5c DC |
22303 | } |
22304 | } | |
c906108c SS |
22305 | break; |
22306 | case DW_TAG_typedef: | |
f1e6e072 | 22307 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 22308 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22309 | list_to_add = cu->list_in_scope; |
63d06c5c | 22310 | break; |
d8f62e84 | 22311 | case DW_TAG_array_type: |
c906108c | 22312 | case DW_TAG_base_type: |
dda83cd7 | 22313 | case DW_TAG_subrange_type: |
f1e6e072 | 22314 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22315 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22316 | list_to_add = cu->list_in_scope; |
c906108c SS |
22317 | break; |
22318 | case DW_TAG_enumerator: | |
e142c38c | 22319 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 22320 | if (attr != nullptr) |
c906108c | 22321 | { |
e7c27a73 | 22322 | dwarf2_const_value (attr, sym, cu); |
c906108c | 22323 | } |
63d06c5c DC |
22324 | { |
22325 | /* NOTE: carlton/2003-11-10: See comment above in the | |
22326 | DW_TAG_class_type, etc. block. */ | |
22327 | ||
804d2729 | 22328 | list_to_add |
c24bdb02 | 22329 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 22330 | && cu->language == language_cplus |
c24bdb02 | 22331 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 22332 | : cu->list_in_scope); |
63d06c5c | 22333 | } |
c906108c | 22334 | break; |
74921315 | 22335 | case DW_TAG_imported_declaration: |
5c4e30ca | 22336 | case DW_TAG_namespace: |
f1e6e072 | 22337 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 22338 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 22339 | break; |
530e8392 KB |
22340 | case DW_TAG_module: |
22341 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
22342 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 22343 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 22344 | break; |
4357ac6c | 22345 | case DW_TAG_common_block: |
f1e6e072 | 22346 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 22347 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 22348 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 22349 | break; |
c906108c SS |
22350 | default: |
22351 | /* Not a tag we recognize. Hopefully we aren't processing | |
22352 | trash data, but since we must specifically ignore things | |
22353 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 22354 | this point. */ |
b98664d3 | 22355 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 22356 | dwarf_tag_name (die->tag)); |
c906108c SS |
22357 | break; |
22358 | } | |
df8a16a1 | 22359 | |
e37fd15a SW |
22360 | if (suppress_add) |
22361 | { | |
22362 | sym->hash_next = objfile->template_symbols; | |
22363 | objfile->template_symbols = sym; | |
22364 | list_to_add = NULL; | |
22365 | } | |
22366 | ||
22367 | if (list_to_add != NULL) | |
d3cb6808 | 22368 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 22369 | |
df8a16a1 DJ |
22370 | /* For the benefit of old versions of GCC, check for anonymous |
22371 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 22372 | if (!cu->processing_has_namespace_info |
94af9270 | 22373 | && cu->language == language_cplus) |
c24bdb02 | 22374 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
22375 | } |
22376 | return (sym); | |
22377 | } | |
22378 | ||
98bfdba5 PA |
22379 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
22380 | zero-extend it as appropriate for the symbol's type. The DWARF | |
22381 | standard (v4) is not entirely clear about the meaning of using | |
22382 | DW_FORM_dataN for a constant with a signed type, where the type is | |
22383 | wider than the data. The conclusion of a discussion on the DWARF | |
22384 | list was that this is unspecified. We choose to always zero-extend | |
22385 | because that is the interpretation long in use by GCC. */ | |
c906108c | 22386 | |
98bfdba5 | 22387 | static gdb_byte * |
ff39bb5e | 22388 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 22389 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 22390 | { |
5e22e966 | 22391 | struct objfile *objfile = cu->per_objfile->objfile; |
e17a4113 UW |
22392 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
22393 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
529908cb | 22394 | LONGEST l = attr->constant_value (0); |
98bfdba5 PA |
22395 | |
22396 | if (bits < sizeof (*value) * 8) | |
22397 | { | |
22398 | l &= ((LONGEST) 1 << bits) - 1; | |
22399 | *value = l; | |
22400 | } | |
22401 | else if (bits == sizeof (*value) * 8) | |
22402 | *value = l; | |
22403 | else | |
22404 | { | |
224c3ddb | 22405 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
22406 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
22407 | return bytes; | |
22408 | } | |
22409 | ||
22410 | return NULL; | |
22411 | } | |
22412 | ||
22413 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
22414 | the value does not fit in *VALUE, set *BYTES - either already | |
22415 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
22416 | or, set *BATON, if we translated the constant to a location | |
22417 | expression. */ | |
22418 | ||
22419 | static void | |
ff39bb5e | 22420 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
22421 | const char *name, struct obstack *obstack, |
22422 | struct dwarf2_cu *cu, | |
d521ce57 | 22423 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
22424 | struct dwarf2_locexpr_baton **baton) |
22425 | { | |
5e22e966 | 22426 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 22427 | struct objfile *objfile = per_objfile->objfile; |
98bfdba5 | 22428 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 22429 | struct dwarf_block *blk; |
98bfdba5 PA |
22430 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
22431 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
22432 | ||
22433 | *value = 0; | |
22434 | *bytes = NULL; | |
22435 | *baton = NULL; | |
c906108c SS |
22436 | |
22437 | switch (attr->form) | |
22438 | { | |
22439 | case DW_FORM_addr: | |
336d760d | 22440 | case DW_FORM_addrx: |
3019eac3 | 22441 | case DW_FORM_GNU_addr_index: |
ac56253d | 22442 | { |
ac56253d TT |
22443 | gdb_byte *data; |
22444 | ||
98bfdba5 PA |
22445 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
22446 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 22447 | cu_header->addr_size, |
98bfdba5 | 22448 | TYPE_LENGTH (type)); |
ac56253d TT |
22449 | /* Symbols of this form are reasonably rare, so we just |
22450 | piggyback on the existing location code rather than writing | |
22451 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 22452 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
a50264ba | 22453 | (*baton)->per_objfile = per_objfile; |
98bfdba5 PA |
22454 | (*baton)->per_cu = cu->per_cu; |
22455 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 22456 | |
98bfdba5 | 22457 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 22458 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 22459 | (*baton)->data = data; |
ac56253d TT |
22460 | |
22461 | data[0] = DW_OP_addr; | |
22462 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
36d378cf | 22463 | byte_order, attr->as_address ()); |
ac56253d | 22464 | data[cu_header->addr_size + 1] = DW_OP_stack_value; |
ac56253d | 22465 | } |
c906108c | 22466 | break; |
4ac36638 | 22467 | case DW_FORM_string: |
93b5768b | 22468 | case DW_FORM_strp: |
cf532bd1 | 22469 | case DW_FORM_strx: |
3019eac3 | 22470 | case DW_FORM_GNU_str_index: |
36586728 | 22471 | case DW_FORM_GNU_strp_alt: |
c6481205 | 22472 | /* The string is already allocated on the objfile obstack, point |
98bfdba5 | 22473 | directly to it. */ |
2c830f54 | 22474 | *bytes = (const gdb_byte *) attr->as_string (); |
93b5768b | 22475 | break; |
c906108c SS |
22476 | case DW_FORM_block1: |
22477 | case DW_FORM_block2: | |
22478 | case DW_FORM_block4: | |
22479 | case DW_FORM_block: | |
2dc7f7b3 | 22480 | case DW_FORM_exprloc: |
0224619f | 22481 | case DW_FORM_data16: |
9d2246fc | 22482 | blk = attr->as_block (); |
98bfdba5 PA |
22483 | if (TYPE_LENGTH (type) != blk->size) |
22484 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
22485 | TYPE_LENGTH (type)); | |
22486 | *bytes = blk->data; | |
c906108c | 22487 | break; |
2df3850c JM |
22488 | |
22489 | /* The DW_AT_const_value attributes are supposed to carry the | |
22490 | symbol's value "represented as it would be on the target | |
22491 | architecture." By the time we get here, it's already been | |
22492 | converted to host endianness, so we just need to sign- or | |
22493 | zero-extend it as appropriate. */ | |
22494 | case DW_FORM_data1: | |
3aef2284 | 22495 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 22496 | break; |
c906108c | 22497 | case DW_FORM_data2: |
3aef2284 | 22498 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 22499 | break; |
c906108c | 22500 | case DW_FORM_data4: |
3aef2284 | 22501 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 22502 | break; |
c906108c | 22503 | case DW_FORM_data8: |
3aef2284 | 22504 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
22505 | break; |
22506 | ||
c906108c | 22507 | case DW_FORM_sdata: |
663c44ac | 22508 | case DW_FORM_implicit_const: |
1bc397c5 | 22509 | *value = attr->as_signed (); |
2df3850c JM |
22510 | break; |
22511 | ||
c906108c | 22512 | case DW_FORM_udata: |
529908cb | 22513 | *value = attr->as_unsigned (); |
c906108c | 22514 | break; |
2df3850c | 22515 | |
c906108c | 22516 | default: |
b98664d3 | 22517 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 22518 | dwarf_form_name (attr->form)); |
98bfdba5 | 22519 | *value = 0; |
c906108c SS |
22520 | break; |
22521 | } | |
22522 | } | |
22523 | ||
2df3850c | 22524 | |
98bfdba5 PA |
22525 | /* Copy constant value from an attribute to a symbol. */ |
22526 | ||
2df3850c | 22527 | static void |
ff39bb5e | 22528 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 22529 | struct dwarf2_cu *cu) |
2df3850c | 22530 | { |
5e22e966 | 22531 | struct objfile *objfile = cu->per_objfile->objfile; |
12df843f | 22532 | LONGEST value; |
d521ce57 | 22533 | const gdb_byte *bytes; |
98bfdba5 | 22534 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 22535 | |
98bfdba5 | 22536 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 22537 | sym->print_name (), |
98bfdba5 PA |
22538 | &objfile->objfile_obstack, cu, |
22539 | &value, &bytes, &baton); | |
2df3850c | 22540 | |
98bfdba5 PA |
22541 | if (baton != NULL) |
22542 | { | |
98bfdba5 | 22543 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 22544 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
22545 | } |
22546 | else if (bytes != NULL) | |
22547 | { | |
22548 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 22549 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
22550 | } |
22551 | else | |
22552 | { | |
22553 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 22554 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 22555 | } |
2df3850c JM |
22556 | } |
22557 | ||
c906108c SS |
22558 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
22559 | ||
22560 | static struct type * | |
e7c27a73 | 22561 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22562 | { |
c906108c | 22563 | struct attribute *type_attr; |
c906108c | 22564 | |
e142c38c | 22565 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
22566 | if (!type_attr) |
22567 | { | |
5e22e966 | 22568 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22569 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 22570 | return objfile_type (objfile)->builtin_void; |
c906108c | 22571 | } |
348e048f | 22572 | |
673bfd45 | 22573 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22574 | } |
22575 | ||
b4ba55a1 JB |
22576 | /* True iff CU's producer generates GNAT Ada auxiliary information |
22577 | that allows to find parallel types through that information instead | |
22578 | of having to do expensive parallel lookups by type name. */ | |
22579 | ||
22580 | static int | |
22581 | need_gnat_info (struct dwarf2_cu *cu) | |
22582 | { | |
de4cb04a JB |
22583 | /* Assume that the Ada compiler was GNAT, which always produces |
22584 | the auxiliary information. */ | |
22585 | return (cu->language == language_ada); | |
b4ba55a1 JB |
22586 | } |
22587 | ||
b4ba55a1 JB |
22588 | /* Return the auxiliary type of the die in question using its |
22589 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
22590 | attribute is not present. */ | |
22591 | ||
22592 | static struct type * | |
22593 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
22594 | { | |
b4ba55a1 | 22595 | struct attribute *type_attr; |
b4ba55a1 JB |
22596 | |
22597 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
22598 | if (!type_attr) | |
22599 | return NULL; | |
22600 | ||
673bfd45 | 22601 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
22602 | } |
22603 | ||
22604 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
22605 | descriptive type accordingly. */ | |
22606 | ||
22607 | static void | |
22608 | set_descriptive_type (struct type *type, struct die_info *die, | |
22609 | struct dwarf2_cu *cu) | |
22610 | { | |
22611 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
22612 | ||
22613 | if (descriptive_type) | |
22614 | { | |
22615 | ALLOCATE_GNAT_AUX_TYPE (type); | |
22616 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
22617 | } | |
22618 | } | |
22619 | ||
c906108c SS |
22620 | /* Return the containing type of the die in question using its |
22621 | DW_AT_containing_type attribute. */ | |
22622 | ||
22623 | static struct type * | |
e7c27a73 | 22624 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22625 | { |
c906108c | 22626 | struct attribute *type_attr; |
5e22e966 | 22627 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22628 | |
e142c38c | 22629 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
22630 | if (!type_attr) |
22631 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 22632 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 22633 | |
673bfd45 | 22634 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22635 | } |
22636 | ||
ac9ec31b DE |
22637 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
22638 | ||
22639 | static struct type * | |
22640 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
22641 | { | |
976ca316 SM |
22642 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22643 | struct objfile *objfile = per_objfile->objfile; | |
528e1572 | 22644 | char *saved; |
ac9ec31b | 22645 | |
528e1572 SM |
22646 | std::string message |
22647 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
22648 | objfile_name (objfile), | |
22649 | sect_offset_str (cu->header.sect_off), | |
22650 | sect_offset_str (die->sect_off)); | |
efba19b0 | 22651 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 22652 | |
19f392bc | 22653 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22654 | } |
22655 | ||
673bfd45 | 22656 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22657 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22658 | DW_AT_containing_type. | |
673bfd45 DE |
22659 | If there is no type substitute an error marker. */ |
22660 | ||
c906108c | 22661 | static struct type * |
ff39bb5e | 22662 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22663 | struct dwarf2_cu *cu) |
c906108c | 22664 | { |
976ca316 SM |
22665 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22666 | struct objfile *objfile = per_objfile->objfile; | |
f792889a DJ |
22667 | struct type *this_type; |
22668 | ||
ac9ec31b DE |
22669 | gdb_assert (attr->name == DW_AT_type |
22670 | || attr->name == DW_AT_GNAT_descriptive_type | |
22671 | || attr->name == DW_AT_containing_type); | |
22672 | ||
673bfd45 DE |
22673 | /* First see if we have it cached. */ |
22674 | ||
36586728 TT |
22675 | if (attr->form == DW_FORM_GNU_ref_alt) |
22676 | { | |
22677 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 22678 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 22679 | |
976ca316 SM |
22680 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, per_objfile); |
22681 | this_type = get_die_type_at_offset (sect_off, per_cu, per_objfile); | |
36586728 | 22682 | } |
cd6c91b4 | 22683 | else if (attr->form_is_ref ()) |
673bfd45 | 22684 | { |
0826b30a | 22685 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 22686 | |
976ca316 | 22687 | this_type = get_die_type_at_offset (sect_off, cu->per_cu, per_objfile); |
673bfd45 | 22688 | } |
55f1336d | 22689 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22690 | { |
630ed6b9 | 22691 | ULONGEST signature = attr->as_signature (); |
673bfd45 | 22692 | |
ac9ec31b | 22693 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22694 | } |
22695 | else | |
22696 | { | |
b98664d3 | 22697 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22698 | " at %s [in module %s]"), |
22699 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22700 | objfile_name (objfile)); |
ac9ec31b | 22701 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22702 | } |
22703 | ||
22704 | /* If not cached we need to read it in. */ | |
22705 | ||
22706 | if (this_type == NULL) | |
22707 | { | |
ac9ec31b | 22708 | struct die_info *type_die = NULL; |
673bfd45 DE |
22709 | struct dwarf2_cu *type_cu = cu; |
22710 | ||
cd6c91b4 | 22711 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22712 | type_die = follow_die_ref (die, attr, &type_cu); |
22713 | if (type_die == NULL) | |
22714 | return build_error_marker_type (cu, die); | |
22715 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22716 | from an inter-CU reference and the type's CU got expanded before |
22717 | ours. */ | |
ac9ec31b | 22718 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22719 | } |
22720 | ||
22721 | /* If we still don't have a type use an error marker. */ | |
22722 | ||
22723 | if (this_type == NULL) | |
ac9ec31b | 22724 | return build_error_marker_type (cu, die); |
673bfd45 | 22725 | |
f792889a | 22726 | return this_type; |
c906108c SS |
22727 | } |
22728 | ||
673bfd45 DE |
22729 | /* Return the type in DIE, CU. |
22730 | Returns NULL for invalid types. | |
22731 | ||
02142a6c | 22732 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22733 | and only reads the die in if necessary. |
22734 | ||
22735 | NOTE: This can be called when reading in partial or full symbols. */ | |
22736 | ||
f792889a | 22737 | static struct type * |
e7c27a73 | 22738 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22739 | { |
f792889a DJ |
22740 | struct type *this_type; |
22741 | ||
22742 | this_type = get_die_type (die, cu); | |
22743 | if (this_type) | |
22744 | return this_type; | |
22745 | ||
673bfd45 DE |
22746 | return read_type_die_1 (die, cu); |
22747 | } | |
22748 | ||
22749 | /* Read the type in DIE, CU. | |
22750 | Returns NULL for invalid types. */ | |
22751 | ||
22752 | static struct type * | |
22753 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22754 | { | |
22755 | struct type *this_type = NULL; | |
22756 | ||
c906108c SS |
22757 | switch (die->tag) |
22758 | { | |
22759 | case DW_TAG_class_type: | |
680b30c7 | 22760 | case DW_TAG_interface_type: |
c906108c SS |
22761 | case DW_TAG_structure_type: |
22762 | case DW_TAG_union_type: | |
f792889a | 22763 | this_type = read_structure_type (die, cu); |
c906108c SS |
22764 | break; |
22765 | case DW_TAG_enumeration_type: | |
f792889a | 22766 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22767 | break; |
22768 | case DW_TAG_subprogram: | |
22769 | case DW_TAG_subroutine_type: | |
edb3359d | 22770 | case DW_TAG_inlined_subroutine: |
f792889a | 22771 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22772 | break; |
22773 | case DW_TAG_array_type: | |
f792889a | 22774 | this_type = read_array_type (die, cu); |
c906108c | 22775 | break; |
72019c9c | 22776 | case DW_TAG_set_type: |
f792889a | 22777 | this_type = read_set_type (die, cu); |
72019c9c | 22778 | break; |
c906108c | 22779 | case DW_TAG_pointer_type: |
f792889a | 22780 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22781 | break; |
22782 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22783 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22784 | break; |
22785 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22786 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22787 | break; | |
22788 | case DW_TAG_rvalue_reference_type: | |
22789 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22790 | break; |
22791 | case DW_TAG_const_type: | |
f792889a | 22792 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22793 | break; |
22794 | case DW_TAG_volatile_type: | |
f792889a | 22795 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22796 | break; |
06d66ee9 TT |
22797 | case DW_TAG_restrict_type: |
22798 | this_type = read_tag_restrict_type (die, cu); | |
22799 | break; | |
c906108c | 22800 | case DW_TAG_string_type: |
f792889a | 22801 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22802 | break; |
22803 | case DW_TAG_typedef: | |
f792889a | 22804 | this_type = read_typedef (die, cu); |
c906108c | 22805 | break; |
a02abb62 | 22806 | case DW_TAG_subrange_type: |
f792889a | 22807 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22808 | break; |
c906108c | 22809 | case DW_TAG_base_type: |
f792889a | 22810 | this_type = read_base_type (die, cu); |
c906108c | 22811 | break; |
81a17f79 | 22812 | case DW_TAG_unspecified_type: |
f792889a | 22813 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22814 | break; |
0114d602 DJ |
22815 | case DW_TAG_namespace: |
22816 | this_type = read_namespace_type (die, cu); | |
22817 | break; | |
f55ee35c JK |
22818 | case DW_TAG_module: |
22819 | this_type = read_module_type (die, cu); | |
22820 | break; | |
a2c2acaf MW |
22821 | case DW_TAG_atomic_type: |
22822 | this_type = read_tag_atomic_type (die, cu); | |
22823 | break; | |
c906108c | 22824 | default: |
b98664d3 | 22825 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 22826 | dwarf_tag_name (die->tag)); |
c906108c SS |
22827 | break; |
22828 | } | |
63d06c5c | 22829 | |
f792889a | 22830 | return this_type; |
63d06c5c DC |
22831 | } |
22832 | ||
abc72ce4 DE |
22833 | /* See if we can figure out if the class lives in a namespace. We do |
22834 | this by looking for a member function; its demangled name will | |
22835 | contain namespace info, if there is any. | |
22836 | Return the computed name or NULL. | |
22837 | Space for the result is allocated on the objfile's obstack. | |
22838 | This is the full-die version of guess_partial_die_structure_name. | |
22839 | In this case we know DIE has no useful parent. */ | |
22840 | ||
43816ebc | 22841 | static const char * |
abc72ce4 DE |
22842 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
22843 | { | |
22844 | struct die_info *spec_die; | |
22845 | struct dwarf2_cu *spec_cu; | |
22846 | struct die_info *child; | |
5e22e966 | 22847 | struct objfile *objfile = cu->per_objfile->objfile; |
abc72ce4 DE |
22848 | |
22849 | spec_cu = cu; | |
22850 | spec_die = die_specification (die, &spec_cu); | |
22851 | if (spec_die != NULL) | |
22852 | { | |
22853 | die = spec_die; | |
22854 | cu = spec_cu; | |
22855 | } | |
22856 | ||
22857 | for (child = die->child; | |
22858 | child != NULL; | |
22859 | child = child->sibling) | |
22860 | { | |
22861 | if (child->tag == DW_TAG_subprogram) | |
22862 | { | |
73b9be8b | 22863 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22864 | |
7d45c7c3 | 22865 | if (linkage_name != NULL) |
abc72ce4 | 22866 | { |
43816ebc | 22867 | gdb::unique_xmalloc_ptr<char> actual_name |
eff93b4d | 22868 | (cu->language_defn->class_name_from_physname (linkage_name)); |
43816ebc | 22869 | const char *name = NULL; |
abc72ce4 DE |
22870 | |
22871 | if (actual_name != NULL) | |
22872 | { | |
15d034d0 | 22873 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22874 | |
22875 | if (die_name != NULL | |
43816ebc | 22876 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
22877 | { |
22878 | /* Strip off the class name from the full name. | |
22879 | We want the prefix. */ | |
22880 | int die_name_len = strlen (die_name); | |
43816ebc TT |
22881 | int actual_name_len = strlen (actual_name.get ()); |
22882 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
22883 | |
22884 | /* Test for '::' as a sanity check. */ | |
22885 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 22886 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 22887 | name = obstack_strndup ( |
e3b94546 | 22888 | &objfile->per_bfd->storage_obstack, |
43816ebc | 22889 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22890 | } |
22891 | } | |
abc72ce4 DE |
22892 | return name; |
22893 | } | |
22894 | } | |
22895 | } | |
22896 | ||
22897 | return NULL; | |
22898 | } | |
22899 | ||
96408a79 SA |
22900 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22901 | prefix part in such case. See | |
22902 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22903 | ||
a121b7c1 | 22904 | static const char * |
96408a79 SA |
22905 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22906 | { | |
22907 | struct attribute *attr; | |
e6a959d6 | 22908 | const char *base; |
96408a79 SA |
22909 | |
22910 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22911 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22912 | return NULL; | |
22913 | ||
7d45c7c3 | 22914 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22915 | return NULL; |
22916 | ||
73b9be8b | 22917 | attr = dw2_linkage_name_attr (die, cu); |
2c830f54 TT |
22918 | const char *attr_name = attr->as_string (); |
22919 | if (attr == NULL || attr_name == NULL) | |
96408a79 SA |
22920 | return NULL; |
22921 | ||
22922 | /* dwarf2_name had to be already called. */ | |
3b64bf15 | 22923 | gdb_assert (attr->canonical_string_p ()); |
96408a79 SA |
22924 | |
22925 | /* Strip the base name, keep any leading namespaces/classes. */ | |
2c830f54 TT |
22926 | base = strrchr (attr_name, ':'); |
22927 | if (base == NULL || base == attr_name || base[-1] != ':') | |
96408a79 SA |
22928 | return ""; |
22929 | ||
5e22e966 | 22930 | struct objfile *objfile = cu->per_objfile->objfile; |
0cf9feb9 | 22931 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
2c830f54 TT |
22932 | attr_name, |
22933 | &base[-1] - attr_name); | |
96408a79 SA |
22934 | } |
22935 | ||
fdde2d81 | 22936 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22937 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22938 | |
0114d602 DJ |
22939 | For example, if we're within the method foo() in the following |
22940 | code: | |
22941 | ||
22942 | namespace N { | |
22943 | class C { | |
22944 | void foo () { | |
22945 | } | |
22946 | }; | |
22947 | } | |
22948 | ||
22949 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22950 | |
0d5cff50 | 22951 | static const char * |
e142c38c | 22952 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22953 | { |
976ca316 | 22954 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
0114d602 DJ |
22955 | struct die_info *parent, *spec_die; |
22956 | struct dwarf2_cu *spec_cu; | |
22957 | struct type *parent_type; | |
a121b7c1 | 22958 | const char *retval; |
63d06c5c | 22959 | |
9c37b5ae | 22960 | if (cu->language != language_cplus |
c44af4eb TT |
22961 | && cu->language != language_fortran && cu->language != language_d |
22962 | && cu->language != language_rust) | |
0114d602 DJ |
22963 | return ""; |
22964 | ||
96408a79 SA |
22965 | retval = anonymous_struct_prefix (die, cu); |
22966 | if (retval) | |
22967 | return retval; | |
22968 | ||
0114d602 DJ |
22969 | /* We have to be careful in the presence of DW_AT_specification. |
22970 | For example, with GCC 3.4, given the code | |
22971 | ||
22972 | namespace N { | |
22973 | void foo() { | |
22974 | // Definition of N::foo. | |
22975 | } | |
22976 | } | |
22977 | ||
22978 | then we'll have a tree of DIEs like this: | |
22979 | ||
22980 | 1: DW_TAG_compile_unit | |
22981 | 2: DW_TAG_namespace // N | |
22982 | 3: DW_TAG_subprogram // declaration of N::foo | |
22983 | 4: DW_TAG_subprogram // definition of N::foo | |
22984 | DW_AT_specification // refers to die #3 | |
22985 | ||
22986 | Thus, when processing die #4, we have to pretend that we're in | |
22987 | the context of its DW_AT_specification, namely the contex of die | |
22988 | #3. */ | |
22989 | spec_cu = cu; | |
22990 | spec_die = die_specification (die, &spec_cu); | |
22991 | if (spec_die == NULL) | |
22992 | parent = die->parent; | |
22993 | else | |
63d06c5c | 22994 | { |
0114d602 DJ |
22995 | parent = spec_die->parent; |
22996 | cu = spec_cu; | |
63d06c5c | 22997 | } |
0114d602 DJ |
22998 | |
22999 | if (parent == NULL) | |
23000 | return ""; | |
98bfdba5 PA |
23001 | else if (parent->building_fullname) |
23002 | { | |
23003 | const char *name; | |
23004 | const char *parent_name; | |
23005 | ||
23006 | /* It has been seen on RealView 2.2 built binaries, | |
23007 | DW_TAG_template_type_param types actually _defined_ as | |
23008 | children of the parent class: | |
23009 | ||
23010 | enum E {}; | |
23011 | template class <class Enum> Class{}; | |
23012 | Class<enum E> class_e; | |
23013 | ||
dda83cd7 SM |
23014 | 1: DW_TAG_class_type (Class) |
23015 | 2: DW_TAG_enumeration_type (E) | |
23016 | 3: DW_TAG_enumerator (enum1:0) | |
23017 | 3: DW_TAG_enumerator (enum2:1) | |
23018 | ... | |
23019 | 2: DW_TAG_template_type_param | |
23020 | DW_AT_type DW_FORM_ref_udata (E) | |
98bfdba5 PA |
23021 | |
23022 | Besides being broken debug info, it can put GDB into an | |
23023 | infinite loop. Consider: | |
23024 | ||
23025 | When we're building the full name for Class<E>, we'll start | |
23026 | at Class, and go look over its template type parameters, | |
23027 | finding E. We'll then try to build the full name of E, and | |
23028 | reach here. We're now trying to build the full name of E, | |
23029 | and look over the parent DIE for containing scope. In the | |
23030 | broken case, if we followed the parent DIE of E, we'd again | |
23031 | find Class, and once again go look at its template type | |
23032 | arguments, etc., etc. Simply don't consider such parent die | |
23033 | as source-level parent of this die (it can't be, the language | |
23034 | doesn't allow it), and break the loop here. */ | |
23035 | name = dwarf2_name (die, cu); | |
23036 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 23037 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
23038 | name ? name : "<unknown>", |
23039 | parent_name ? parent_name : "<unknown>"); | |
23040 | return ""; | |
23041 | } | |
63d06c5c | 23042 | else |
0114d602 DJ |
23043 | switch (parent->tag) |
23044 | { | |
63d06c5c | 23045 | case DW_TAG_namespace: |
0114d602 | 23046 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
23047 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
23048 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
23049 | Work around this problem here. */ | |
23050 | if (cu->language == language_cplus | |
7d93a1e0 | 23051 | && strcmp (parent_type->name (), "::") == 0) |
acebe513 | 23052 | return ""; |
0114d602 | 23053 | /* We give a name to even anonymous namespaces. */ |
7d93a1e0 | 23054 | return parent_type->name (); |
63d06c5c | 23055 | case DW_TAG_class_type: |
680b30c7 | 23056 | case DW_TAG_interface_type: |
63d06c5c | 23057 | case DW_TAG_structure_type: |
0114d602 | 23058 | case DW_TAG_union_type: |
f55ee35c | 23059 | case DW_TAG_module: |
0114d602 | 23060 | parent_type = read_type_die (parent, cu); |
7d93a1e0 SM |
23061 | if (parent_type->name () != NULL) |
23062 | return parent_type->name (); | |
0114d602 DJ |
23063 | else |
23064 | /* An anonymous structure is only allowed non-static data | |
23065 | members; no typedefs, no member functions, et cetera. | |
23066 | So it does not need a prefix. */ | |
23067 | return ""; | |
abc72ce4 | 23068 | case DW_TAG_compile_unit: |
95554aad | 23069 | case DW_TAG_partial_unit: |
abc72ce4 DE |
23070 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
23071 | if (cu->language == language_cplus | |
976ca316 | 23072 | && !per_objfile->per_bfd->types.empty () |
abc72ce4 DE |
23073 | && die->child != NULL |
23074 | && (die->tag == DW_TAG_class_type | |
23075 | || die->tag == DW_TAG_structure_type | |
23076 | || die->tag == DW_TAG_union_type)) | |
23077 | { | |
43816ebc | 23078 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
23079 | if (name != NULL) |
23080 | return name; | |
23081 | } | |
23082 | return ""; | |
0a4b0913 AB |
23083 | case DW_TAG_subprogram: |
23084 | /* Nested subroutines in Fortran get a prefix with the name | |
23085 | of the parent's subroutine. */ | |
23086 | if (cu->language == language_fortran) | |
23087 | { | |
23088 | if ((die->tag == DW_TAG_subprogram) | |
23089 | && (dwarf2_name (parent, cu) != NULL)) | |
23090 | return dwarf2_name (parent, cu); | |
23091 | } | |
23092 | return determine_prefix (parent, cu); | |
3d567982 TT |
23093 | case DW_TAG_enumeration_type: |
23094 | parent_type = read_type_die (parent, cu); | |
23095 | if (TYPE_DECLARED_CLASS (parent_type)) | |
23096 | { | |
7d93a1e0 SM |
23097 | if (parent_type->name () != NULL) |
23098 | return parent_type->name (); | |
3d567982 TT |
23099 | return ""; |
23100 | } | |
23101 | /* Fall through. */ | |
63d06c5c | 23102 | default: |
8176b9b8 | 23103 | return determine_prefix (parent, cu); |
63d06c5c | 23104 | } |
63d06c5c DC |
23105 | } |
23106 | ||
3e43a32a MS |
23107 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
23108 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
23109 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
23110 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
23111 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 23112 | |
f55ee35c | 23113 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
23114 | |
23115 | static char * | |
f55ee35c | 23116 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
dda83cd7 | 23117 | int physname, struct dwarf2_cu *cu) |
63d06c5c | 23118 | { |
f55ee35c | 23119 | const char *lead = ""; |
5c315b68 | 23120 | const char *sep; |
63d06c5c | 23121 | |
3e43a32a MS |
23122 | if (suffix == NULL || suffix[0] == '\0' |
23123 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 23124 | sep = ""; |
45280282 IB |
23125 | else if (cu->language == language_d) |
23126 | { | |
23127 | /* For D, the 'main' function could be defined in any module, but it | |
23128 | should never be prefixed. */ | |
23129 | if (strcmp (suffix, "D main") == 0) | |
23130 | { | |
23131 | prefix = ""; | |
23132 | sep = ""; | |
23133 | } | |
23134 | else | |
23135 | sep = "."; | |
23136 | } | |
f55ee35c JK |
23137 | else if (cu->language == language_fortran && physname) |
23138 | { | |
23139 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
23140 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
23141 | ||
23142 | lead = "__"; | |
23143 | sep = "_MOD_"; | |
23144 | } | |
987504bb JJ |
23145 | else |
23146 | sep = "::"; | |
63d06c5c | 23147 | |
6dd47d34 DE |
23148 | if (prefix == NULL) |
23149 | prefix = ""; | |
23150 | if (suffix == NULL) | |
23151 | suffix = ""; | |
23152 | ||
987504bb JJ |
23153 | if (obs == NULL) |
23154 | { | |
3e43a32a | 23155 | char *retval |
224c3ddb SM |
23156 | = ((char *) |
23157 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 23158 | |
f55ee35c JK |
23159 | strcpy (retval, lead); |
23160 | strcat (retval, prefix); | |
6dd47d34 DE |
23161 | strcat (retval, sep); |
23162 | strcat (retval, suffix); | |
63d06c5c DC |
23163 | return retval; |
23164 | } | |
987504bb JJ |
23165 | else |
23166 | { | |
23167 | /* We have an obstack. */ | |
f55ee35c | 23168 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 23169 | } |
63d06c5c DC |
23170 | } |
23171 | ||
71c25dea TT |
23172 | /* Get name of a die, return NULL if not found. */ |
23173 | ||
15d034d0 TT |
23174 | static const char * |
23175 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 23176 | struct objfile *objfile) |
71c25dea TT |
23177 | { |
23178 | if (name && cu->language == language_cplus) | |
23179 | { | |
596dc4ad TT |
23180 | gdb::unique_xmalloc_ptr<char> canon_name |
23181 | = cp_canonicalize_string (name); | |
71c25dea | 23182 | |
596dc4ad TT |
23183 | if (canon_name != nullptr) |
23184 | name = objfile->intern (canon_name.get ()); | |
71c25dea TT |
23185 | } |
23186 | ||
23187 | return name; | |
c906108c SS |
23188 | } |
23189 | ||
96553a0c DE |
23190 | /* Get name of a die, return NULL if not found. |
23191 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 23192 | |
15d034d0 | 23193 | static const char * |
e142c38c | 23194 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
23195 | { |
23196 | struct attribute *attr; | |
5e22e966 | 23197 | struct objfile *objfile = cu->per_objfile->objfile; |
9219021c | 23198 | |
e142c38c | 23199 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2c830f54 TT |
23200 | const char *attr_name = attr == nullptr ? nullptr : attr->as_string (); |
23201 | if (attr_name == nullptr | |
96553a0c | 23202 | && die->tag != DW_TAG_namespace |
53832f31 TT |
23203 | && die->tag != DW_TAG_class_type |
23204 | && die->tag != DW_TAG_interface_type | |
23205 | && die->tag != DW_TAG_structure_type | |
23206 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
23207 | return NULL; |
23208 | ||
23209 | switch (die->tag) | |
23210 | { | |
23211 | case DW_TAG_compile_unit: | |
95554aad | 23212 | case DW_TAG_partial_unit: |
71c25dea TT |
23213 | /* Compilation units have a DW_AT_name that is a filename, not |
23214 | a source language identifier. */ | |
23215 | case DW_TAG_enumeration_type: | |
23216 | case DW_TAG_enumerator: | |
23217 | /* These tags always have simple identifiers already; no need | |
23218 | to canonicalize them. */ | |
2c830f54 | 23219 | return attr_name; |
907af001 | 23220 | |
96553a0c | 23221 | case DW_TAG_namespace: |
2c830f54 TT |
23222 | if (attr_name != nullptr) |
23223 | return attr_name; | |
96553a0c DE |
23224 | return CP_ANONYMOUS_NAMESPACE_STR; |
23225 | ||
907af001 UW |
23226 | case DW_TAG_class_type: |
23227 | case DW_TAG_interface_type: | |
23228 | case DW_TAG_structure_type: | |
23229 | case DW_TAG_union_type: | |
23230 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
23231 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
23232 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
23233 | and GCC 4.4. We work around this problem by ignoring these. */ | |
2c830f54 TT |
23234 | if (attr_name != nullptr |
23235 | && (startswith (attr_name, "._") | |
23236 | || startswith (attr_name, "<anonymous"))) | |
907af001 | 23237 | return NULL; |
53832f31 TT |
23238 | |
23239 | /* GCC might emit a nameless typedef that has a linkage name. See | |
23240 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
2c830f54 | 23241 | if (!attr || attr_name == NULL) |
53832f31 | 23242 | { |
73b9be8b | 23243 | attr = dw2_linkage_name_attr (die, cu); |
95eb9e54 | 23244 | attr_name = attr == nullptr ? nullptr : attr->as_string (); |
2c830f54 | 23245 | if (attr == NULL || attr_name == NULL) |
53832f31 TT |
23246 | return NULL; |
23247 | ||
2c830f54 | 23248 | /* Avoid demangling attr_name the second time on a second |
df5c6c50 | 23249 | call for the same DIE. */ |
3b64bf15 | 23250 | if (!attr->canonical_string_p ()) |
53832f31 | 23251 | { |
43816ebc | 23252 | gdb::unique_xmalloc_ptr<char> demangled |
2c830f54 | 23253 | (gdb_demangle (attr_name, DMGL_TYPES)); |
4f180d53 AT |
23254 | if (demangled == nullptr) |
23255 | return nullptr; | |
43816ebc | 23256 | |
c6481205 | 23257 | attr->set_string_canonical (objfile->intern (demangled.get ())); |
95eb9e54 | 23258 | attr_name = attr->as_string (); |
53832f31 | 23259 | } |
67430cd0 | 23260 | |
2c830f54 TT |
23261 | /* Strip any leading namespaces/classes, keep only the |
23262 | base name. DW_AT_name for named DIEs does not | |
23263 | contain the prefixes. */ | |
23264 | const char *base = strrchr (attr_name, ':'); | |
23265 | if (base && base > attr_name && base[-1] == ':') | |
67430cd0 TT |
23266 | return &base[1]; |
23267 | else | |
2c830f54 | 23268 | return attr_name; |
53832f31 | 23269 | } |
907af001 UW |
23270 | break; |
23271 | ||
71c25dea | 23272 | default: |
907af001 UW |
23273 | break; |
23274 | } | |
23275 | ||
3b64bf15 | 23276 | if (!attr->canonical_string_p ()) |
c6481205 TT |
23277 | attr->set_string_canonical (dwarf2_canonicalize_name (attr_name, cu, |
23278 | objfile)); | |
2c830f54 | 23279 | return attr->as_string (); |
9219021c DC |
23280 | } |
23281 | ||
23282 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
23283 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
23284 | containing the return value on output. */ | |
9219021c DC |
23285 | |
23286 | static struct die_info * | |
f2f0e013 | 23287 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
23288 | { |
23289 | struct attribute *attr; | |
9219021c | 23290 | |
f2f0e013 | 23291 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
23292 | if (attr == NULL) |
23293 | return NULL; | |
23294 | ||
f2f0e013 | 23295 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
23296 | } |
23297 | ||
f9aca02d | 23298 | static void |
d97bc12b | 23299 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
23300 | { |
23301 | unsigned int i; | |
23302 | ||
d97bc12b | 23303 | print_spaces (indent, f); |
9d8780f0 | 23304 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 23305 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 23306 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
23307 | |
23308 | if (die->parent != NULL) | |
23309 | { | |
23310 | print_spaces (indent, f); | |
9d8780f0 SM |
23311 | fprintf_unfiltered (f, " parent at offset: %s\n", |
23312 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
23313 | } |
23314 | ||
23315 | print_spaces (indent, f); | |
23316 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 23317 | dwarf_bool_name (die->child != NULL)); |
c906108c | 23318 | |
d97bc12b DE |
23319 | print_spaces (indent, f); |
23320 | fprintf_unfiltered (f, " attributes:\n"); | |
23321 | ||
c906108c SS |
23322 | for (i = 0; i < die->num_attrs; ++i) |
23323 | { | |
d97bc12b DE |
23324 | print_spaces (indent, f); |
23325 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
23326 | dwarf_attr_name (die->attrs[i].name), |
23327 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 23328 | |
c906108c SS |
23329 | switch (die->attrs[i].form) |
23330 | { | |
c906108c | 23331 | case DW_FORM_addr: |
336d760d | 23332 | case DW_FORM_addrx: |
3019eac3 | 23333 | case DW_FORM_GNU_addr_index: |
d97bc12b | 23334 | fprintf_unfiltered (f, "address: "); |
36d378cf | 23335 | fputs_filtered (hex_string (die->attrs[i].as_address ()), f); |
c906108c SS |
23336 | break; |
23337 | case DW_FORM_block2: | |
23338 | case DW_FORM_block4: | |
23339 | case DW_FORM_block: | |
23340 | case DW_FORM_block1: | |
56eb65bd | 23341 | fprintf_unfiltered (f, "block: size %s", |
9d2246fc | 23342 | pulongest (die->attrs[i].as_block ()->size)); |
c906108c | 23343 | break; |
2dc7f7b3 | 23344 | case DW_FORM_exprloc: |
56eb65bd | 23345 | fprintf_unfiltered (f, "expression: size %s", |
9d2246fc | 23346 | pulongest (die->attrs[i].as_block ()->size)); |
2dc7f7b3 | 23347 | break; |
0224619f JK |
23348 | case DW_FORM_data16: |
23349 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
23350 | break; | |
4568ecf9 DE |
23351 | case DW_FORM_ref_addr: |
23352 | fprintf_unfiltered (f, "ref address: "); | |
529908cb | 23353 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
4568ecf9 | 23354 | break; |
36586728 TT |
23355 | case DW_FORM_GNU_ref_alt: |
23356 | fprintf_unfiltered (f, "alt ref address: "); | |
529908cb | 23357 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
36586728 | 23358 | break; |
10b3939b DJ |
23359 | case DW_FORM_ref1: |
23360 | case DW_FORM_ref2: | |
23361 | case DW_FORM_ref4: | |
4568ecf9 DE |
23362 | case DW_FORM_ref8: |
23363 | case DW_FORM_ref_udata: | |
d97bc12b | 23364 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
529908cb | 23365 | (long) (die->attrs[i].as_unsigned ())); |
10b3939b | 23366 | break; |
c906108c SS |
23367 | case DW_FORM_data1: |
23368 | case DW_FORM_data2: | |
23369 | case DW_FORM_data4: | |
ce5d95e1 | 23370 | case DW_FORM_data8: |
c906108c | 23371 | case DW_FORM_udata: |
43bbcdc2 | 23372 | fprintf_unfiltered (f, "constant: %s", |
529908cb | 23373 | pulongest (die->attrs[i].as_unsigned ())); |
c906108c | 23374 | break; |
2dc7f7b3 TT |
23375 | case DW_FORM_sec_offset: |
23376 | fprintf_unfiltered (f, "section offset: %s", | |
529908cb | 23377 | pulongest (die->attrs[i].as_unsigned ())); |
2dc7f7b3 | 23378 | break; |
55f1336d | 23379 | case DW_FORM_ref_sig8: |
ac9ec31b | 23380 | fprintf_unfiltered (f, "signature: %s", |
630ed6b9 | 23381 | hex_string (die->attrs[i].as_signature ())); |
348e048f | 23382 | break; |
c906108c | 23383 | case DW_FORM_string: |
4bdf3d34 | 23384 | case DW_FORM_strp: |
43988095 | 23385 | case DW_FORM_line_strp: |
cf532bd1 | 23386 | case DW_FORM_strx: |
3019eac3 | 23387 | case DW_FORM_GNU_str_index: |
36586728 | 23388 | case DW_FORM_GNU_strp_alt: |
8285870a | 23389 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c6481205 TT |
23390 | die->attrs[i].as_string () |
23391 | ? die->attrs[i].as_string () : "", | |
23392 | die->attrs[i].canonical_string_p () ? "is" : "not"); | |
c906108c SS |
23393 | break; |
23394 | case DW_FORM_flag: | |
c45bc3f8 | 23395 | if (die->attrs[i].as_boolean ()) |
d97bc12b | 23396 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 23397 | else |
d97bc12b | 23398 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 23399 | break; |
2dc7f7b3 TT |
23400 | case DW_FORM_flag_present: |
23401 | fprintf_unfiltered (f, "flag: TRUE"); | |
23402 | break; | |
a8329558 | 23403 | case DW_FORM_indirect: |
0963b4bd MS |
23404 | /* The reader will have reduced the indirect form to |
23405 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 23406 | fprintf_unfiltered (f, |
3e43a32a | 23407 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 23408 | break; |
1bc397c5 | 23409 | case DW_FORM_sdata: |
663c44ac JK |
23410 | case DW_FORM_implicit_const: |
23411 | fprintf_unfiltered (f, "constant: %s", | |
1bc397c5 | 23412 | plongest (die->attrs[i].as_signed ())); |
663c44ac | 23413 | break; |
c906108c | 23414 | default: |
d97bc12b | 23415 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 23416 | die->attrs[i].form); |
d97bc12b | 23417 | break; |
c906108c | 23418 | } |
d97bc12b | 23419 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
23420 | } |
23421 | } | |
23422 | ||
f9aca02d | 23423 | static void |
d97bc12b | 23424 | dump_die_for_error (struct die_info *die) |
c906108c | 23425 | { |
d97bc12b DE |
23426 | dump_die_shallow (gdb_stderr, 0, die); |
23427 | } | |
23428 | ||
23429 | static void | |
23430 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
23431 | { | |
23432 | int indent = level * 4; | |
23433 | ||
23434 | gdb_assert (die != NULL); | |
23435 | ||
23436 | if (level >= max_level) | |
23437 | return; | |
23438 | ||
23439 | dump_die_shallow (f, indent, die); | |
23440 | ||
23441 | if (die->child != NULL) | |
c906108c | 23442 | { |
d97bc12b DE |
23443 | print_spaces (indent, f); |
23444 | fprintf_unfiltered (f, " Children:"); | |
23445 | if (level + 1 < max_level) | |
23446 | { | |
23447 | fprintf_unfiltered (f, "\n"); | |
23448 | dump_die_1 (f, level + 1, max_level, die->child); | |
23449 | } | |
23450 | else | |
23451 | { | |
3e43a32a MS |
23452 | fprintf_unfiltered (f, |
23453 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
23454 | } |
23455 | } | |
23456 | ||
23457 | if (die->sibling != NULL && level > 0) | |
23458 | { | |
23459 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
23460 | } |
23461 | } | |
23462 | ||
d97bc12b DE |
23463 | /* This is called from the pdie macro in gdbinit.in. |
23464 | It's not static so gcc will keep a copy callable from gdb. */ | |
23465 | ||
23466 | void | |
23467 | dump_die (struct die_info *die, int max_level) | |
23468 | { | |
23469 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
23470 | } | |
23471 | ||
f9aca02d | 23472 | static void |
51545339 | 23473 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 23474 | { |
51545339 | 23475 | void **slot; |
c906108c | 23476 | |
9c541725 PA |
23477 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
23478 | to_underlying (die->sect_off), | |
b64f50a1 | 23479 | INSERT); |
51545339 DJ |
23480 | |
23481 | *slot = die; | |
c906108c SS |
23482 | } |
23483 | ||
348e048f DE |
23484 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
23485 | On entry *REF_CU is the CU of SRC_DIE. | |
23486 | On exit *REF_CU is the CU of the result. */ | |
23487 | ||
23488 | static struct die_info * | |
ff39bb5e | 23489 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
23490 | struct dwarf2_cu **ref_cu) |
23491 | { | |
23492 | struct die_info *die; | |
23493 | ||
cd6c91b4 | 23494 | if (attr->form_is_ref ()) |
348e048f | 23495 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 23496 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
23497 | die = follow_die_sig (src_die, attr, ref_cu); |
23498 | else | |
23499 | { | |
23500 | dump_die_for_error (src_die); | |
23501 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
5e22e966 | 23502 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
348e048f DE |
23503 | } |
23504 | ||
23505 | return die; | |
03dd20cc DJ |
23506 | } |
23507 | ||
5c631832 | 23508 | /* Follow reference OFFSET. |
673bfd45 DE |
23509 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
23510 | On exit *REF_CU is the CU of the result. | |
23511 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 23512 | |
f9aca02d | 23513 | static struct die_info * |
9c541725 | 23514 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 23515 | struct dwarf2_cu **ref_cu) |
c906108c | 23516 | { |
10b3939b | 23517 | struct die_info temp_die; |
f2f0e013 | 23518 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
976ca316 | 23519 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10b3939b | 23520 | |
348e048f DE |
23521 | gdb_assert (cu->per_cu != NULL); |
23522 | ||
98bfdba5 PA |
23523 | target_cu = cu; |
23524 | ||
3019eac3 | 23525 | if (cu->per_cu->is_debug_types) |
348e048f DE |
23526 | { |
23527 | /* .debug_types CUs cannot reference anything outside their CU. | |
23528 | If they need to, they have to reference a signatured type via | |
55f1336d | 23529 | DW_FORM_ref_sig8. */ |
4057dfde | 23530 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 23531 | return NULL; |
348e048f | 23532 | } |
36586728 | 23533 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 23534 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
23535 | { |
23536 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 23537 | |
9c541725 | 23538 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
976ca316 | 23539 | per_objfile); |
03dd20cc DJ |
23540 | |
23541 | /* If necessary, add it to the queue and load its DIEs. */ | |
976ca316 | 23542 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
4a636814 SM |
23543 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
23544 | false, cu->language); | |
03dd20cc | 23545 | |
976ca316 | 23546 | target_cu = per_objfile->get_cu (per_cu); |
10b3939b | 23547 | } |
98bfdba5 PA |
23548 | else if (cu->dies == NULL) |
23549 | { | |
23550 | /* We're loading full DIEs during partial symbol reading. */ | |
976ca316 | 23551 | gdb_assert (per_objfile->per_bfd->reading_partial_symbols); |
4a636814 SM |
23552 | load_full_comp_unit (cu->per_cu, per_objfile, cu, false, |
23553 | language_minimal); | |
98bfdba5 | 23554 | } |
c906108c | 23555 | |
f2f0e013 | 23556 | *ref_cu = target_cu; |
9c541725 | 23557 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
23558 | |
23559 | if (target_cu != cu) | |
23560 | target_cu->ancestor = cu; | |
23561 | ||
9a3c8263 | 23562 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
23563 | &temp_die, |
23564 | to_underlying (sect_off)); | |
5c631832 | 23565 | } |
10b3939b | 23566 | |
5c631832 JK |
23567 | /* Follow reference attribute ATTR of SRC_DIE. |
23568 | On entry *REF_CU is the CU of SRC_DIE. | |
23569 | On exit *REF_CU is the CU of the result. */ | |
23570 | ||
23571 | static struct die_info * | |
ff39bb5e | 23572 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23573 | struct dwarf2_cu **ref_cu) |
23574 | { | |
0826b30a | 23575 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
23576 | struct dwarf2_cu *cu = *ref_cu; |
23577 | struct die_info *die; | |
23578 | ||
9c541725 | 23579 | die = follow_die_offset (sect_off, |
36586728 TT |
23580 | (attr->form == DW_FORM_GNU_ref_alt |
23581 | || cu->per_cu->is_dwz), | |
23582 | ref_cu); | |
5c631832 | 23583 | if (!die) |
9d8780f0 SM |
23584 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23585 | "at %s [in module %s]"), | |
23586 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23587 | objfile_name (cu->per_objfile->objfile)); |
348e048f | 23588 | |
5c631832 JK |
23589 | return die; |
23590 | } | |
23591 | ||
d4c9a4f8 | 23592 | /* See read.h. */ |
5c631832 JK |
23593 | |
23594 | struct dwarf2_locexpr_baton | |
9c541725 | 23595 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 23596 | dwarf2_per_cu_data *per_cu, |
976ca316 | 23597 | dwarf2_per_objfile *per_objfile, |
041d9819 SM |
23598 | gdb::function_view<CORE_ADDR ()> get_frame_pc, |
23599 | bool resolve_abstract_p) | |
5c631832 | 23600 | { |
5c631832 JK |
23601 | struct die_info *die; |
23602 | struct attribute *attr; | |
23603 | struct dwarf2_locexpr_baton retval; | |
976ca316 | 23604 | struct objfile *objfile = per_objfile->objfile; |
8cf6f0b1 | 23605 | |
976ca316 | 23606 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 | 23607 | if (cu == nullptr) |
976ca316 | 23608 | cu = load_cu (per_cu, per_objfile, false); |
1b555f17 SM |
23609 | |
23610 | if (cu == nullptr) | |
cc12ce38 DE |
23611 | { |
23612 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23613 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23614 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23615 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23616 | } |
918dd910 | 23617 | |
9c541725 | 23618 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23619 | if (!die) |
9d8780f0 SM |
23620 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23621 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23622 | |
23623 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 23624 | if (!attr && resolve_abstract_p |
976ca316 SM |
23625 | && (per_objfile->per_bfd->abstract_to_concrete.find (die->sect_off) |
23626 | != per_objfile->per_bfd->abstract_to_concrete.end ())) | |
e4a62c65 | 23627 | { |
041d9819 | 23628 | CORE_ADDR pc = get_frame_pc (); |
b3b3bada | 23629 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 23630 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 23631 | |
3360b6e7 | 23632 | for (const auto &cand_off |
976ca316 | 23633 | : per_objfile->per_bfd->abstract_to_concrete[die->sect_off]) |
e4a62c65 | 23634 | { |
3360b6e7 TV |
23635 | struct dwarf2_cu *cand_cu = cu; |
23636 | struct die_info *cand | |
23637 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
23638 | if (!cand | |
23639 | || !cand->parent | |
e4a62c65 TV |
23640 | || cand->parent->tag != DW_TAG_subprogram) |
23641 | continue; | |
23642 | ||
23643 | CORE_ADDR pc_low, pc_high; | |
23644 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
23645 | if (pc_low == ((CORE_ADDR) -1)) |
23646 | continue; | |
23647 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
23648 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
23649 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
23650 | continue; |
23651 | ||
23652 | die = cand; | |
23653 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23654 | break; | |
23655 | } | |
23656 | } | |
23657 | ||
5c631832 JK |
23658 | if (!attr) |
23659 | { | |
e103e986 JK |
23660 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23661 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23662 | |
e103e986 | 23663 | retval.data = NULL; |
5c631832 JK |
23664 | retval.size = 0; |
23665 | } | |
cd6c91b4 | 23666 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
23667 | { |
23668 | struct dwarf2_loclist_baton loclist_baton; | |
041d9819 | 23669 | CORE_ADDR pc = get_frame_pc (); |
8cf6f0b1 TT |
23670 | size_t size; |
23671 | ||
23672 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23673 | ||
23674 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23675 | &size, pc); | |
23676 | retval.size = size; | |
23677 | } | |
5c631832 JK |
23678 | else |
23679 | { | |
4fc6c0d5 | 23680 | if (!attr->form_is_block ()) |
9d8780f0 | 23681 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23682 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23683 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 | 23684 | |
9d2246fc TT |
23685 | struct dwarf_block *block = attr->as_block (); |
23686 | retval.data = block->data; | |
23687 | retval.size = block->size; | |
5c631832 | 23688 | } |
976ca316 | 23689 | retval.per_objfile = per_objfile; |
5c631832 | 23690 | retval.per_cu = cu->per_cu; |
918dd910 | 23691 | |
976ca316 | 23692 | per_objfile->age_comp_units (); |
918dd910 | 23693 | |
5c631832 | 23694 | return retval; |
348e048f DE |
23695 | } |
23696 | ||
d4c9a4f8 | 23697 | /* See read.h. */ |
8b9737bf TT |
23698 | |
23699 | struct dwarf2_locexpr_baton | |
23700 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 23701 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23702 | dwarf2_per_objfile *per_objfile, |
041d9819 | 23703 | gdb::function_view<CORE_ADDR ()> get_frame_pc) |
8b9737bf | 23704 | { |
9c541725 | 23705 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23706 | |
14095eb3 | 23707 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, per_objfile, |
041d9819 | 23708 | get_frame_pc); |
8b9737bf TT |
23709 | } |
23710 | ||
b6807d98 TT |
23711 | /* Write a constant of a given type as target-ordered bytes into |
23712 | OBSTACK. */ | |
23713 | ||
23714 | static const gdb_byte * | |
23715 | write_constant_as_bytes (struct obstack *obstack, | |
23716 | enum bfd_endian byte_order, | |
23717 | struct type *type, | |
23718 | ULONGEST value, | |
23719 | LONGEST *len) | |
23720 | { | |
23721 | gdb_byte *result; | |
23722 | ||
23723 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23724 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23725 | store_unsigned_integer (result, *len, byte_order, value); |
23726 | ||
23727 | return result; | |
23728 | } | |
23729 | ||
d4c9a4f8 | 23730 | /* See read.h. */ |
b6807d98 TT |
23731 | |
23732 | const gdb_byte * | |
9c541725 | 23733 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 | 23734 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23735 | dwarf2_per_objfile *per_objfile, |
d4c9a4f8 | 23736 | obstack *obstack, |
b6807d98 TT |
23737 | LONGEST *len) |
23738 | { | |
b6807d98 TT |
23739 | struct die_info *die; |
23740 | struct attribute *attr; | |
23741 | const gdb_byte *result = NULL; | |
23742 | struct type *type; | |
23743 | LONGEST value; | |
23744 | enum bfd_endian byte_order; | |
14095eb3 | 23745 | struct objfile *objfile = per_objfile->objfile; |
b6807d98 | 23746 | |
7188ed02 | 23747 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
23748 | if (cu == nullptr) |
23749 | cu = load_cu (per_cu, per_objfile, false); | |
23750 | ||
23751 | if (cu == nullptr) | |
cc12ce38 DE |
23752 | { |
23753 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23754 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23755 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23756 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23757 | } |
b6807d98 | 23758 | |
9c541725 | 23759 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23760 | if (!die) |
9d8780f0 SM |
23761 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23762 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23763 | |
23764 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23765 | if (attr == NULL) | |
23766 | return NULL; | |
23767 | ||
e3b94546 | 23768 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23769 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23770 | ||
23771 | switch (attr->form) | |
23772 | { | |
23773 | case DW_FORM_addr: | |
336d760d | 23774 | case DW_FORM_addrx: |
b6807d98 TT |
23775 | case DW_FORM_GNU_addr_index: |
23776 | { | |
23777 | gdb_byte *tem; | |
23778 | ||
23779 | *len = cu->header.addr_size; | |
224c3ddb | 23780 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
36d378cf | 23781 | store_unsigned_integer (tem, *len, byte_order, attr->as_address ()); |
b6807d98 TT |
23782 | result = tem; |
23783 | } | |
23784 | break; | |
23785 | case DW_FORM_string: | |
23786 | case DW_FORM_strp: | |
cf532bd1 | 23787 | case DW_FORM_strx: |
b6807d98 TT |
23788 | case DW_FORM_GNU_str_index: |
23789 | case DW_FORM_GNU_strp_alt: | |
c6481205 | 23790 | /* The string is already allocated on the objfile obstack, point |
b6807d98 | 23791 | directly to it. */ |
2c830f54 TT |
23792 | { |
23793 | const char *attr_name = attr->as_string (); | |
23794 | result = (const gdb_byte *) attr_name; | |
23795 | *len = strlen (attr_name); | |
23796 | } | |
b6807d98 TT |
23797 | break; |
23798 | case DW_FORM_block1: | |
23799 | case DW_FORM_block2: | |
23800 | case DW_FORM_block4: | |
23801 | case DW_FORM_block: | |
23802 | case DW_FORM_exprloc: | |
0224619f | 23803 | case DW_FORM_data16: |
9d2246fc TT |
23804 | { |
23805 | struct dwarf_block *block = attr->as_block (); | |
23806 | result = block->data; | |
23807 | *len = block->size; | |
23808 | } | |
b6807d98 TT |
23809 | break; |
23810 | ||
23811 | /* The DW_AT_const_value attributes are supposed to carry the | |
23812 | symbol's value "represented as it would be on the target | |
23813 | architecture." By the time we get here, it's already been | |
23814 | converted to host endianness, so we just need to sign- or | |
23815 | zero-extend it as appropriate. */ | |
23816 | case DW_FORM_data1: | |
23817 | type = die_type (die, cu); | |
23818 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23819 | if (result == NULL) | |
23820 | result = write_constant_as_bytes (obstack, byte_order, | |
23821 | type, value, len); | |
23822 | break; | |
23823 | case DW_FORM_data2: | |
23824 | type = die_type (die, cu); | |
23825 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23826 | if (result == NULL) | |
23827 | result = write_constant_as_bytes (obstack, byte_order, | |
23828 | type, value, len); | |
23829 | break; | |
23830 | case DW_FORM_data4: | |
23831 | type = die_type (die, cu); | |
23832 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23833 | if (result == NULL) | |
23834 | result = write_constant_as_bytes (obstack, byte_order, | |
23835 | type, value, len); | |
23836 | break; | |
23837 | case DW_FORM_data8: | |
23838 | type = die_type (die, cu); | |
23839 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23840 | if (result == NULL) | |
23841 | result = write_constant_as_bytes (obstack, byte_order, | |
23842 | type, value, len); | |
23843 | break; | |
23844 | ||
23845 | case DW_FORM_sdata: | |
663c44ac | 23846 | case DW_FORM_implicit_const: |
b6807d98 TT |
23847 | type = die_type (die, cu); |
23848 | result = write_constant_as_bytes (obstack, byte_order, | |
1bc397c5 | 23849 | type, attr->as_signed (), len); |
b6807d98 TT |
23850 | break; |
23851 | ||
23852 | case DW_FORM_udata: | |
23853 | type = die_type (die, cu); | |
23854 | result = write_constant_as_bytes (obstack, byte_order, | |
529908cb | 23855 | type, attr->as_unsigned (), len); |
b6807d98 TT |
23856 | break; |
23857 | ||
23858 | default: | |
b98664d3 | 23859 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23860 | dwarf_form_name (attr->form)); |
23861 | break; | |
23862 | } | |
23863 | ||
23864 | return result; | |
23865 | } | |
23866 | ||
d4c9a4f8 | 23867 | /* See read.h. */ |
7942e96e AA |
23868 | |
23869 | struct type * | |
9c541725 | 23870 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
14095eb3 SM |
23871 | dwarf2_per_cu_data *per_cu, |
23872 | dwarf2_per_objfile *per_objfile) | |
7942e96e | 23873 | { |
7942e96e AA |
23874 | struct die_info *die; |
23875 | ||
7188ed02 | 23876 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
23877 | if (cu == nullptr) |
23878 | cu = load_cu (per_cu, per_objfile, false); | |
23879 | ||
23880 | if (cu == nullptr) | |
23881 | return nullptr; | |
7942e96e | 23882 | |
9c541725 | 23883 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23884 | if (!die) |
23885 | return NULL; | |
23886 | ||
23887 | return die_type (die, cu); | |
23888 | } | |
23889 | ||
8cb5117c | 23890 | /* See read.h. */ |
8a9b8146 TT |
23891 | |
23892 | struct type * | |
b64f50a1 | 23893 | dwarf2_get_die_type (cu_offset die_offset, |
aa66c379 SM |
23894 | dwarf2_per_cu_data *per_cu, |
23895 | dwarf2_per_objfile *per_objfile) | |
8a9b8146 | 23896 | { |
9c541725 | 23897 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
aa66c379 | 23898 | return get_die_type_at_offset (die_offset_sect, per_cu, per_objfile); |
8a9b8146 TT |
23899 | } |
23900 | ||
ac9ec31b | 23901 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23902 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23903 | On exit *REF_CU is the CU of the result. |
23904 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23905 | |
23906 | static struct die_info * | |
ac9ec31b DE |
23907 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23908 | struct dwarf2_cu **ref_cu) | |
348e048f | 23909 | { |
348e048f | 23910 | struct die_info temp_die; |
c24bdb02 | 23911 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f | 23912 | struct die_info *die; |
976ca316 | 23913 | dwarf2_per_objfile *per_objfile = (*ref_cu)->per_objfile; |
120ce1b5 | 23914 | |
348e048f | 23915 | |
ac9ec31b DE |
23916 | /* While it might be nice to assert sig_type->type == NULL here, |
23917 | we can get here for DW_AT_imported_declaration where we need | |
23918 | the DIE not the type. */ | |
348e048f DE |
23919 | |
23920 | /* If necessary, add it to the queue and load its DIEs. */ | |
23921 | ||
976ca316 | 23922 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, per_objfile, |
120ce1b5 | 23923 | language_minimal)) |
976ca316 | 23924 | read_signatured_type (sig_type, per_objfile); |
348e048f | 23925 | |
976ca316 | 23926 | sig_cu = per_objfile->get_cu (&sig_type->per_cu); |
69d751e3 | 23927 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23928 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23929 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23930 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23931 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23932 | if (die) |
23933 | { | |
796a7ff8 DE |
23934 | /* For .gdb_index version 7 keep track of included TUs. |
23935 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
976ca316 SM |
23936 | if (per_objfile->per_bfd->index_table != NULL |
23937 | && per_objfile->per_bfd->index_table->version <= 7) | |
796a7ff8 | 23938 | { |
ae640021 | 23939 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
23940 | } |
23941 | ||
348e048f | 23942 | *ref_cu = sig_cu; |
c24bdb02 KS |
23943 | if (sig_cu != cu) |
23944 | sig_cu->ancestor = cu; | |
23945 | ||
348e048f DE |
23946 | return die; |
23947 | } | |
23948 | ||
ac9ec31b DE |
23949 | return NULL; |
23950 | } | |
23951 | ||
23952 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23953 | On entry *REF_CU is the CU of SRC_DIE. | |
23954 | On exit *REF_CU is the CU of the result. | |
23955 | The result is the DIE of the type. | |
23956 | If the referenced type cannot be found an error is thrown. */ | |
23957 | ||
23958 | static struct die_info * | |
ff39bb5e | 23959 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23960 | struct dwarf2_cu **ref_cu) |
23961 | { | |
630ed6b9 | 23962 | ULONGEST signature = attr->as_signature (); |
ac9ec31b DE |
23963 | struct signatured_type *sig_type; |
23964 | struct die_info *die; | |
23965 | ||
23966 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23967 | ||
a2ce51a0 | 23968 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23969 | /* sig_type will be NULL if the signatured type is missing from |
23970 | the debug info. */ | |
23971 | if (sig_type == NULL) | |
23972 | { | |
23973 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
dda83cd7 SM |
23974 | " from DIE at %s [in module %s]"), |
23975 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23976 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
23977 | } |
23978 | ||
23979 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23980 | if (die == NULL) | |
23981 | { | |
23982 | dump_die_for_error (src_die); | |
23983 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23984 | " from DIE at %s [in module %s]"), |
23985 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23986 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
23987 | } |
23988 | ||
23989 | return die; | |
23990 | } | |
23991 | ||
23992 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23993 | reading in and processing the type unit if necessary. */ | |
23994 | ||
23995 | static struct type * | |
23996 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23997 | struct dwarf2_cu *cu) | |
23998 | { | |
976ca316 | 23999 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ac9ec31b DE |
24000 | struct signatured_type *sig_type; |
24001 | struct dwarf2_cu *type_cu; | |
24002 | struct die_info *type_die; | |
24003 | struct type *type; | |
24004 | ||
a2ce51a0 | 24005 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
24006 | /* sig_type will be NULL if the signatured type is missing from |
24007 | the debug info. */ | |
24008 | if (sig_type == NULL) | |
24009 | { | |
b98664d3 | 24010 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
24011 | " from DIE at %s [in module %s]"), |
24012 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 24013 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24014 | return build_error_marker_type (cu, die); |
24015 | } | |
24016 | ||
24017 | /* If we already know the type we're done. */ | |
976ca316 | 24018 | type = per_objfile->get_type_for_signatured_type (sig_type); |
e286671b TT |
24019 | if (type != nullptr) |
24020 | return type; | |
ac9ec31b DE |
24021 | |
24022 | type_cu = cu; | |
24023 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
24024 | if (type_die != NULL) | |
24025 | { | |
24026 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
24027 | is created. This is important, for example, because for c++ classes | |
24028 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
24029 | type = read_type_die (type_die, type_cu); | |
24030 | if (type == NULL) | |
24031 | { | |
b98664d3 | 24032 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
24033 | " referenced from DIE at %s [in module %s]"), |
24034 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 24035 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24036 | type = build_error_marker_type (cu, die); |
24037 | } | |
24038 | } | |
24039 | else | |
24040 | { | |
b98664d3 | 24041 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
24042 | " from DIE at %s [in module %s]"), |
24043 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 24044 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24045 | type = build_error_marker_type (cu, die); |
24046 | } | |
e286671b | 24047 | |
976ca316 | 24048 | per_objfile->set_type_for_signatured_type (sig_type, type); |
ac9ec31b DE |
24049 | |
24050 | return type; | |
24051 | } | |
24052 | ||
24053 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
24054 | reading in and processing the type unit if necessary. */ | |
24055 | ||
24056 | static struct type * | |
ff39bb5e | 24057 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 24058 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
24059 | { |
24060 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 24061 | if (attr->form_is_ref ()) |
ac9ec31b DE |
24062 | { |
24063 | struct dwarf2_cu *type_cu = cu; | |
24064 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
24065 | ||
24066 | return read_type_die (type_die, type_cu); | |
24067 | } | |
24068 | else if (attr->form == DW_FORM_ref_sig8) | |
24069 | { | |
630ed6b9 | 24070 | return get_signatured_type (die, attr->as_signature (), cu); |
ac9ec31b DE |
24071 | } |
24072 | else | |
24073 | { | |
976ca316 | 24074 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 24075 | |
b98664d3 | 24076 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
24077 | " at %s [in module %s]"), |
24078 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
976ca316 | 24079 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24080 | return build_error_marker_type (cu, die); |
24081 | } | |
348e048f DE |
24082 | } |
24083 | ||
e5fe5e75 | 24084 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
24085 | |
24086 | static void | |
ab432490 SM |
24087 | load_full_type_unit (dwarf2_per_cu_data *per_cu, |
24088 | dwarf2_per_objfile *per_objfile) | |
348e048f | 24089 | { |
52dc124a | 24090 | struct signatured_type *sig_type; |
348e048f | 24091 | |
f4dc4d17 | 24092 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 24093 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 24094 | |
6721b2ec DE |
24095 | /* We have the per_cu, but we need the signatured_type. |
24096 | Fortunately this is an easy translation. */ | |
24097 | gdb_assert (per_cu->is_debug_types); | |
24098 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 24099 | |
7188ed02 | 24100 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 24101 | |
ab432490 | 24102 | read_signatured_type (sig_type, per_objfile); |
348e048f | 24103 | |
7188ed02 | 24104 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); |
348e048f DE |
24105 | } |
24106 | ||
3019eac3 DE |
24107 | /* Read in a signatured type and build its CU and DIEs. |
24108 | If the type is a stub for the real type in a DWO file, | |
24109 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
24110 | |
24111 | static void | |
ab432490 SM |
24112 | read_signatured_type (signatured_type *sig_type, |
24113 | dwarf2_per_objfile *per_objfile) | |
dee91e82 DE |
24114 | { |
24115 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 24116 | |
3019eac3 | 24117 | gdb_assert (per_cu->is_debug_types); |
7188ed02 | 24118 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 24119 | |
2e671100 | 24120 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
24121 | |
24122 | if (!reader.dummy_p) | |
24123 | { | |
24124 | struct dwarf2_cu *cu = reader.cu; | |
24125 | const gdb_byte *info_ptr = reader.info_ptr; | |
24126 | ||
24127 | gdb_assert (cu->die_hash == NULL); | |
24128 | cu->die_hash = | |
24129 | htab_create_alloc_ex (cu->header.length / 12, | |
24130 | die_hash, | |
24131 | die_eq, | |
24132 | NULL, | |
24133 | &cu->comp_unit_obstack, | |
24134 | hashtab_obstack_allocate, | |
24135 | dummy_obstack_deallocate); | |
24136 | ||
3e225074 | 24137 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
24138 | reader.comp_unit_die->child |
24139 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
24140 | reader.comp_unit_die); | |
24141 | cu->dies = reader.comp_unit_die; | |
24142 | /* comp_unit_die is not stored in die_hash, no need. */ | |
24143 | ||
24144 | /* We try not to read any attributes in this function, because | |
24145 | not all CUs needed for references have been loaded yet, and | |
24146 | symbol table processing isn't initialized. But we have to | |
24147 | set the CU language, or we won't be able to build types | |
24148 | correctly. Similarly, if we do not read the producer, we can | |
24149 | not apply producer-specific interpretation. */ | |
24150 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
24151 | |
24152 | reader.keep (); | |
c0ab21c2 TT |
24153 | } |
24154 | ||
7ee85ab1 | 24155 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
24156 | } |
24157 | ||
c906108c SS |
24158 | /* Decode simple location descriptions. |
24159 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
24160 | the location and return the value. If COMPUTED is non-null, it is |
24161 | set to true to indicate that decoding was successful, and false | |
24162 | otherwise. If COMPUTED is null, then this function may emit a | |
24163 | complaint. */ | |
c906108c SS |
24164 | |
24165 | static CORE_ADDR | |
7d79de9a | 24166 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 24167 | { |
5e22e966 | 24168 | struct objfile *objfile = cu->per_objfile->objfile; |
56eb65bd SP |
24169 | size_t i; |
24170 | size_t size = blk->size; | |
d521ce57 | 24171 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
24172 | CORE_ADDR stack[64]; |
24173 | int stacki; | |
24174 | unsigned int bytes_read, unsnd; | |
24175 | gdb_byte op; | |
c906108c | 24176 | |
7d79de9a TT |
24177 | if (computed != nullptr) |
24178 | *computed = false; | |
24179 | ||
21ae7a4d JK |
24180 | i = 0; |
24181 | stacki = 0; | |
24182 | stack[stacki] = 0; | |
24183 | stack[++stacki] = 0; | |
24184 | ||
24185 | while (i < size) | |
24186 | { | |
24187 | op = data[i++]; | |
24188 | switch (op) | |
24189 | { | |
24190 | case DW_OP_lit0: | |
24191 | case DW_OP_lit1: | |
24192 | case DW_OP_lit2: | |
24193 | case DW_OP_lit3: | |
24194 | case DW_OP_lit4: | |
24195 | case DW_OP_lit5: | |
24196 | case DW_OP_lit6: | |
24197 | case DW_OP_lit7: | |
24198 | case DW_OP_lit8: | |
24199 | case DW_OP_lit9: | |
24200 | case DW_OP_lit10: | |
24201 | case DW_OP_lit11: | |
24202 | case DW_OP_lit12: | |
24203 | case DW_OP_lit13: | |
24204 | case DW_OP_lit14: | |
24205 | case DW_OP_lit15: | |
24206 | case DW_OP_lit16: | |
24207 | case DW_OP_lit17: | |
24208 | case DW_OP_lit18: | |
24209 | case DW_OP_lit19: | |
24210 | case DW_OP_lit20: | |
24211 | case DW_OP_lit21: | |
24212 | case DW_OP_lit22: | |
24213 | case DW_OP_lit23: | |
24214 | case DW_OP_lit24: | |
24215 | case DW_OP_lit25: | |
24216 | case DW_OP_lit26: | |
24217 | case DW_OP_lit27: | |
24218 | case DW_OP_lit28: | |
24219 | case DW_OP_lit29: | |
24220 | case DW_OP_lit30: | |
24221 | case DW_OP_lit31: | |
24222 | stack[++stacki] = op - DW_OP_lit0; | |
24223 | break; | |
f1bea926 | 24224 | |
21ae7a4d JK |
24225 | case DW_OP_reg0: |
24226 | case DW_OP_reg1: | |
24227 | case DW_OP_reg2: | |
24228 | case DW_OP_reg3: | |
24229 | case DW_OP_reg4: | |
24230 | case DW_OP_reg5: | |
24231 | case DW_OP_reg6: | |
24232 | case DW_OP_reg7: | |
24233 | case DW_OP_reg8: | |
24234 | case DW_OP_reg9: | |
24235 | case DW_OP_reg10: | |
24236 | case DW_OP_reg11: | |
24237 | case DW_OP_reg12: | |
24238 | case DW_OP_reg13: | |
24239 | case DW_OP_reg14: | |
24240 | case DW_OP_reg15: | |
24241 | case DW_OP_reg16: | |
24242 | case DW_OP_reg17: | |
24243 | case DW_OP_reg18: | |
24244 | case DW_OP_reg19: | |
24245 | case DW_OP_reg20: | |
24246 | case DW_OP_reg21: | |
24247 | case DW_OP_reg22: | |
24248 | case DW_OP_reg23: | |
24249 | case DW_OP_reg24: | |
24250 | case DW_OP_reg25: | |
24251 | case DW_OP_reg26: | |
24252 | case DW_OP_reg27: | |
24253 | case DW_OP_reg28: | |
24254 | case DW_OP_reg29: | |
24255 | case DW_OP_reg30: | |
24256 | case DW_OP_reg31: | |
24257 | stack[++stacki] = op - DW_OP_reg0; | |
24258 | if (i < size) | |
7d79de9a TT |
24259 | { |
24260 | if (computed == nullptr) | |
24261 | dwarf2_complex_location_expr_complaint (); | |
24262 | else | |
24263 | return 0; | |
24264 | } | |
21ae7a4d | 24265 | break; |
c906108c | 24266 | |
21ae7a4d JK |
24267 | case DW_OP_regx: |
24268 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
24269 | i += bytes_read; | |
24270 | stack[++stacki] = unsnd; | |
24271 | if (i < size) | |
7d79de9a TT |
24272 | { |
24273 | if (computed == nullptr) | |
24274 | dwarf2_complex_location_expr_complaint (); | |
24275 | else | |
24276 | return 0; | |
24277 | } | |
21ae7a4d | 24278 | break; |
c906108c | 24279 | |
21ae7a4d | 24280 | case DW_OP_addr: |
c8a7a66f TT |
24281 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
24282 | &bytes_read); | |
21ae7a4d JK |
24283 | i += bytes_read; |
24284 | break; | |
d53d4ac5 | 24285 | |
21ae7a4d JK |
24286 | case DW_OP_const1u: |
24287 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
24288 | i += 1; | |
24289 | break; | |
24290 | ||
24291 | case DW_OP_const1s: | |
24292 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
24293 | i += 1; | |
24294 | break; | |
24295 | ||
24296 | case DW_OP_const2u: | |
24297 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
24298 | i += 2; | |
24299 | break; | |
24300 | ||
24301 | case DW_OP_const2s: | |
24302 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
24303 | i += 2; | |
24304 | break; | |
d53d4ac5 | 24305 | |
21ae7a4d JK |
24306 | case DW_OP_const4u: |
24307 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
24308 | i += 4; | |
24309 | break; | |
24310 | ||
24311 | case DW_OP_const4s: | |
24312 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
24313 | i += 4; | |
24314 | break; | |
24315 | ||
585861ea JK |
24316 | case DW_OP_const8u: |
24317 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
24318 | i += 8; | |
24319 | break; | |
24320 | ||
21ae7a4d JK |
24321 | case DW_OP_constu: |
24322 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
24323 | &bytes_read); | |
24324 | i += bytes_read; | |
24325 | break; | |
24326 | ||
24327 | case DW_OP_consts: | |
24328 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
24329 | i += bytes_read; | |
24330 | break; | |
24331 | ||
24332 | case DW_OP_dup: | |
24333 | stack[stacki + 1] = stack[stacki]; | |
24334 | stacki++; | |
24335 | break; | |
24336 | ||
24337 | case DW_OP_plus: | |
24338 | stack[stacki - 1] += stack[stacki]; | |
24339 | stacki--; | |
24340 | break; | |
24341 | ||
24342 | case DW_OP_plus_uconst: | |
24343 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
24344 | &bytes_read); | |
24345 | i += bytes_read; | |
24346 | break; | |
24347 | ||
24348 | case DW_OP_minus: | |
24349 | stack[stacki - 1] -= stack[stacki]; | |
24350 | stacki--; | |
24351 | break; | |
24352 | ||
24353 | case DW_OP_deref: | |
24354 | /* If we're not the last op, then we definitely can't encode | |
24355 | this using GDB's address_class enum. This is valid for partial | |
24356 | global symbols, although the variable's address will be bogus | |
24357 | in the psymtab. */ | |
24358 | if (i < size) | |
7d79de9a TT |
24359 | { |
24360 | if (computed == nullptr) | |
24361 | dwarf2_complex_location_expr_complaint (); | |
24362 | else | |
24363 | return 0; | |
24364 | } | |
21ae7a4d JK |
24365 | break; |
24366 | ||
dda83cd7 | 24367 | case DW_OP_GNU_push_tls_address: |
4aa4e28b | 24368 | case DW_OP_form_tls_address: |
21ae7a4d JK |
24369 | /* The top of the stack has the offset from the beginning |
24370 | of the thread control block at which the variable is located. */ | |
24371 | /* Nothing should follow this operator, so the top of stack would | |
24372 | be returned. */ | |
24373 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
24374 | address will be bogus in the psymtab. Make it always at least |
24375 | non-zero to not look as a variable garbage collected by linker | |
24376 | which have DW_OP_addr 0. */ | |
21ae7a4d | 24377 | if (i < size) |
7d79de9a TT |
24378 | { |
24379 | if (computed == nullptr) | |
24380 | dwarf2_complex_location_expr_complaint (); | |
24381 | else | |
24382 | return 0; | |
24383 | } | |
585861ea | 24384 | stack[stacki]++; |
dda83cd7 | 24385 | break; |
21ae7a4d JK |
24386 | |
24387 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
24388 | if (computed != nullptr) |
24389 | return 0; | |
21ae7a4d JK |
24390 | break; |
24391 | ||
336d760d | 24392 | case DW_OP_addrx: |
3019eac3 | 24393 | case DW_OP_GNU_addr_index: |
49f6c839 | 24394 | case DW_OP_GNU_const_index: |
3019eac3 DE |
24395 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
24396 | &bytes_read); | |
24397 | i += bytes_read; | |
24398 | break; | |
24399 | ||
21ae7a4d | 24400 | default: |
7d79de9a TT |
24401 | if (computed == nullptr) |
24402 | { | |
24403 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 24404 | |
7d79de9a TT |
24405 | if (name) |
24406 | complaint (_("unsupported stack op: '%s'"), | |
24407 | name); | |
24408 | else | |
24409 | complaint (_("unsupported stack op: '%02x'"), | |
24410 | op); | |
24411 | } | |
21ae7a4d JK |
24412 | |
24413 | return (stack[stacki]); | |
d53d4ac5 | 24414 | } |
3c6e0cb3 | 24415 | |
21ae7a4d | 24416 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
dda83cd7 | 24417 | outside of the allocated space. Also enforce minimum>0. */ |
21ae7a4d JK |
24418 | if (stacki >= ARRAY_SIZE (stack) - 1) |
24419 | { | |
7d79de9a TT |
24420 | if (computed == nullptr) |
24421 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
24422 | return 0; |
24423 | } | |
24424 | ||
24425 | if (stacki <= 0) | |
24426 | { | |
7d79de9a TT |
24427 | if (computed == nullptr) |
24428 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
24429 | return 0; |
24430 | } | |
24431 | } | |
7d79de9a TT |
24432 | |
24433 | if (computed != nullptr) | |
24434 | *computed = true; | |
21ae7a4d | 24435 | return (stack[stacki]); |
c906108c SS |
24436 | } |
24437 | ||
24438 | /* memory allocation interface */ | |
24439 | ||
c906108c | 24440 | static struct dwarf_block * |
7b5a2f43 | 24441 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 24442 | { |
8d749320 | 24443 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
24444 | } |
24445 | ||
c906108c | 24446 | static struct die_info * |
b60c80d6 | 24447 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
24448 | { |
24449 | struct die_info *die; | |
b60c80d6 DJ |
24450 | size_t size = sizeof (struct die_info); |
24451 | ||
24452 | if (num_attrs > 1) | |
24453 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 24454 | |
b60c80d6 | 24455 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
24456 | memset (die, 0, sizeof (struct die_info)); |
24457 | return (die); | |
24458 | } | |
2e276125 JB |
24459 | |
24460 | \f | |
a036ba48 | 24461 | |
c90ec28a | 24462 | /* Macro support. */ |
cf2c3c16 | 24463 | |
9eac9650 TT |
24464 | /* An overload of dwarf_decode_macros that finds the correct section |
24465 | and ensures it is read in before calling the other overload. */ | |
24466 | ||
24467 | static void | |
24468 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
24469 | int section_is_gnu) | |
24470 | { | |
976ca316 SM |
24471 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24472 | struct objfile *objfile = per_objfile->objfile; | |
5a0e026f | 24473 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
24474 | unsigned int offset_size = cu->header.offset_size; |
24475 | struct dwarf2_section_info *section; | |
24476 | const char *section_name; | |
24477 | ||
24478 | if (cu->dwo_unit != nullptr) | |
24479 | { | |
24480 | if (section_is_gnu) | |
24481 | { | |
24482 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24483 | section_name = ".debug_macro.dwo"; | |
24484 | } | |
24485 | else | |
24486 | { | |
24487 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24488 | section_name = ".debug_macinfo.dwo"; | |
24489 | } | |
24490 | } | |
24491 | else | |
24492 | { | |
24493 | if (section_is_gnu) | |
24494 | { | |
976ca316 | 24495 | section = &per_objfile->per_bfd->macro; |
9eac9650 TT |
24496 | section_name = ".debug_macro"; |
24497 | } | |
24498 | else | |
24499 | { | |
976ca316 | 24500 | section = &per_objfile->per_bfd->macinfo; |
9eac9650 TT |
24501 | section_name = ".debug_macinfo"; |
24502 | } | |
24503 | } | |
24504 | ||
24505 | section->read (objfile); | |
24506 | if (section->buffer == nullptr) | |
24507 | { | |
24508 | complaint (_("missing %s section"), section_name); | |
24509 | return; | |
24510 | } | |
24511 | ||
24512 | buildsym_compunit *builder = cu->get_builder (); | |
24513 | ||
048fde1e | 24514 | struct dwarf2_section_info *str_offsets_section; |
24515 | struct dwarf2_section_info *str_section; | |
24516 | ULONGEST str_offsets_base; | |
24517 | ||
24518 | if (cu->dwo_unit != nullptr) | |
24519 | { | |
24520 | str_offsets_section = &cu->dwo_unit->dwo_file | |
24521 | ->sections.str_offsets; | |
24522 | str_section = &cu->dwo_unit->dwo_file->sections.str; | |
24523 | str_offsets_base = cu->header.addr_size; | |
24524 | } | |
24525 | else | |
24526 | { | |
24527 | str_offsets_section = &per_objfile->per_bfd->str_offsets; | |
24528 | str_section = &per_objfile->per_bfd->str; | |
24529 | str_offsets_base = *cu->str_offsets_base; | |
24530 | } | |
24531 | ||
976ca316 | 24532 | dwarf_decode_macros (per_objfile, builder, section, lh, |
048fde1e | 24533 | offset_size, offset, str_section, str_offsets_section, |
24534 | str_offsets_base, section_is_gnu); | |
9eac9650 TT |
24535 | } |
24536 | ||
3019eac3 DE |
24537 | /* Return the .debug_loc section to use for CU. |
24538 | For DWO files use .debug_loc.dwo. */ | |
24539 | ||
24540 | static struct dwarf2_section_info * | |
24541 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24542 | { | |
976ca316 | 24543 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 24544 | |
3019eac3 | 24545 | if (cu->dwo_unit) |
43988095 JK |
24546 | { |
24547 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 24548 | |
43988095 JK |
24549 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
24550 | } | |
976ca316 SM |
24551 | return (cu->header.version >= 5 ? &per_objfile->per_bfd->loclists |
24552 | : &per_objfile->per_bfd->loc); | |
3019eac3 DE |
24553 | } |
24554 | ||
d0ce17d8 CT |
24555 | /* Return the .debug_rnglists section to use for CU. */ |
24556 | static struct dwarf2_section_info * | |
24557 | cu_debug_rnglists_section (struct dwarf2_cu *cu, dwarf_tag tag) | |
24558 | { | |
24559 | if (cu->header.version < 5) | |
24560 | error (_(".debug_rnglists section cannot be used in DWARF %d"), | |
24561 | cu->header.version); | |
24562 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
24563 | ||
24564 | /* Make sure we read the .debug_rnglists section from the file that | |
24565 | contains the DW_AT_ranges attribute we are reading. Normally that | |
24566 | would be the .dwo file, if there is one. However for DW_TAG_compile_unit | |
24567 | or DW_TAG_skeleton unit, we always want to read from objfile/linked | |
24568 | program. */ | |
24569 | if (cu->dwo_unit != nullptr | |
24570 | && tag != DW_TAG_compile_unit | |
24571 | && tag != DW_TAG_skeleton_unit) | |
24572 | { | |
24573 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
24574 | ||
24575 | if (sections->rnglists.size > 0) | |
24576 | return §ions->rnglists; | |
24577 | else | |
24578 | error (_(".debug_rnglists section is missing from .dwo file.")); | |
24579 | } | |
24580 | return &dwarf2_per_objfile->per_bfd->rnglists; | |
24581 | } | |
24582 | ||
8cf6f0b1 TT |
24583 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24584 | ||
24585 | static void | |
24586 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24587 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24588 | const struct attribute *attr) |
8cf6f0b1 | 24589 | { |
976ca316 | 24590 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 DE |
24591 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24592 | ||
976ca316 | 24593 | section->read (per_objfile->objfile); |
8cf6f0b1 | 24594 | |
976ca316 | 24595 | baton->per_objfile = per_objfile; |
8cf6f0b1 TT |
24596 | baton->per_cu = cu->per_cu; |
24597 | gdb_assert (baton->per_cu); | |
24598 | /* We don't know how long the location list is, but make sure we | |
24599 | don't run off the edge of the section. */ | |
d4df075e TT |
24600 | baton->size = section->size - attr->as_unsigned (); |
24601 | baton->data = section->buffer + attr->as_unsigned (); | |
2b24b6e4 TT |
24602 | if (cu->base_address.has_value ()) |
24603 | baton->base_address = *cu->base_address; | |
24604 | else | |
24605 | baton->base_address = 0; | |
f664829e | 24606 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24607 | } |
24608 | ||
4c2df51b | 24609 | static void |
ff39bb5e | 24610 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24611 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24612 | { |
976ca316 SM |
24613 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24614 | struct objfile *objfile = per_objfile->objfile; | |
3019eac3 | 24615 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24616 | |
cd6c91b4 | 24617 | if (attr->form_is_section_offset () |
3019eac3 | 24618 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24619 | the section. If so, fall through to the complaint in the |
24620 | other branch. */ | |
d4df075e | 24621 | && attr->as_unsigned () < section->get_size (objfile)) |
4c2df51b | 24622 | { |
0d53c4c4 | 24623 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24624 | |
8d749320 | 24625 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24626 | |
8cf6f0b1 | 24627 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24628 | |
2b24b6e4 | 24629 | if (!cu->base_address.has_value ()) |
b98664d3 | 24630 | complaint (_("Location list used without " |
3e43a32a | 24631 | "specifying the CU base address.")); |
4c2df51b | 24632 | |
f1e6e072 TT |
24633 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24634 | ? dwarf2_loclist_block_index | |
24635 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24636 | SYMBOL_LOCATION_BATON (sym) = baton; |
24637 | } | |
24638 | else | |
24639 | { | |
24640 | struct dwarf2_locexpr_baton *baton; | |
24641 | ||
8d749320 | 24642 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
976ca316 | 24643 | baton->per_objfile = per_objfile; |
ae0d2f24 UW |
24644 | baton->per_cu = cu->per_cu; |
24645 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 24646 | |
4fc6c0d5 | 24647 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
24648 | { |
24649 | /* Note that we're just copying the block's data pointer | |
24650 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24651 | info_buffer for SYM's objfile; right now we never release |
24652 | that buffer, but when we do clean up properly this may | |
24653 | need to change. */ | |
9d2246fc TT |
24654 | struct dwarf_block *block = attr->as_block (); |
24655 | baton->size = block->size; | |
24656 | baton->data = block->data; | |
0d53c4c4 DJ |
24657 | } |
24658 | else | |
24659 | { | |
24660 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 24661 | sym->natural_name ()); |
0d53c4c4 | 24662 | baton->size = 0; |
0d53c4c4 | 24663 | } |
6e70227d | 24664 | |
f1e6e072 TT |
24665 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24666 | ? dwarf2_locexpr_block_index | |
24667 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24668 | SYMBOL_LOCATION_BATON (sym) = baton; |
24669 | } | |
4c2df51b | 24670 | } |
6502dd73 | 24671 | |
2e6a9f79 | 24672 | /* See read.h. */ |
96408a79 | 24673 | |
2e6a9f79 SM |
24674 | const comp_unit_head * |
24675 | dwarf2_per_cu_data::get_header () const | |
96408a79 | 24676 | { |
2e6a9f79 SM |
24677 | if (!m_header_read_in) |
24678 | { | |
24679 | const gdb_byte *info_ptr | |
24680 | = this->section->buffer + to_underlying (this->sect_off); | |
96408a79 | 24681 | |
2e6a9f79 | 24682 | memset (&m_header, 0, sizeof (m_header)); |
96408a79 | 24683 | |
2e6a9f79 SM |
24684 | read_comp_unit_head (&m_header, info_ptr, this->section, |
24685 | rcuh_kind::COMPILE); | |
24686 | } | |
96408a79 | 24687 | |
2e6a9f79 | 24688 | return &m_header; |
96408a79 SA |
24689 | } |
24690 | ||
09ba997f | 24691 | /* See read.h. */ |
ae0d2f24 | 24692 | |
98714339 | 24693 | int |
09ba997f | 24694 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 24695 | { |
2e6a9f79 | 24696 | return this->get_header ()->addr_size; |
ae0d2f24 UW |
24697 | } |
24698 | ||
09ba997f | 24699 | /* See read.h. */ |
9eae7c52 TT |
24700 | |
24701 | int | |
09ba997f | 24702 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 24703 | { |
2e6a9f79 | 24704 | return this->get_header ()->offset_size; |
96408a79 SA |
24705 | } |
24706 | ||
09ba997f | 24707 | /* See read.h. */ |
96408a79 SA |
24708 | |
24709 | int | |
09ba997f | 24710 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 | 24711 | { |
2e6a9f79 | 24712 | const comp_unit_head *header = this->get_header (); |
96408a79 | 24713 | |
2e6a9f79 SM |
24714 | if (header->version == 2) |
24715 | return header->addr_size; | |
96408a79 | 24716 | else |
2e6a9f79 | 24717 | return header->offset_size; |
181cebd4 JK |
24718 | } |
24719 | ||
09ba997f | 24720 | /* See read.h. */ |
9aa1f1e3 | 24721 | |
09ba997f | 24722 | struct type * |
293e7e51 | 24723 | dwarf2_cu::addr_type () const |
9a49df9d | 24724 | { |
293e7e51 | 24725 | struct objfile *objfile = this->per_objfile->objfile; |
9a49df9d AB |
24726 | struct type *void_type = objfile_type (objfile)->builtin_void; |
24727 | struct type *addr_type = lookup_pointer_type (void_type); | |
293e7e51 | 24728 | int addr_size = this->per_cu->addr_size (); |
9a49df9d AB |
24729 | |
24730 | if (TYPE_LENGTH (addr_type) == addr_size) | |
24731 | return addr_type; | |
24732 | ||
c6d940a9 | 24733 | addr_type = addr_sized_int_type (addr_type->is_unsigned ()); |
9a49df9d AB |
24734 | return addr_type; |
24735 | } | |
24736 | ||
22b6cd70 TT |
24737 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
24738 | the index of the result, and that searches a vector. It will | |
24739 | return a result even if the offset in question does not actually | |
24740 | occur in any CU. This is separate so that it can be unit | |
24741 | tested. */ | |
ae038cb0 | 24742 | |
22b6cd70 TT |
24743 | static int |
24744 | dwarf2_find_containing_comp_unit | |
24745 | (sect_offset sect_off, | |
24746 | unsigned int offset_in_dwz, | |
24747 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 24748 | { |
ae038cb0 DJ |
24749 | int low, high; |
24750 | ||
ae038cb0 | 24751 | low = 0; |
22b6cd70 | 24752 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
24753 | while (high > low) |
24754 | { | |
36586728 | 24755 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 24756 | int mid = low + (high - low) / 2; |
9a619af0 | 24757 | |
22b6cd70 | 24758 | mid_cu = all_comp_units[mid]; |
36586728 | 24759 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 24760 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 24761 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
24762 | high = mid; |
24763 | else | |
24764 | low = mid + 1; | |
24765 | } | |
24766 | gdb_assert (low == high); | |
22b6cd70 TT |
24767 | return low; |
24768 | } | |
24769 | ||
24770 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
24771 | the DIE at OFFSET. Raises an error on failure. */ | |
24772 | ||
24773 | static struct dwarf2_per_cu_data * | |
24774 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
24775 | unsigned int offset_in_dwz, | |
976ca316 | 24776 | dwarf2_per_objfile *per_objfile) |
22b6cd70 | 24777 | { |
976ca316 SM |
24778 | int low = dwarf2_find_containing_comp_unit |
24779 | (sect_off, offset_in_dwz, per_objfile->per_bfd->all_comp_units); | |
24780 | dwarf2_per_cu_data *this_cu = per_objfile->per_bfd->all_comp_units[low]; | |
22b6cd70 | 24781 | |
45b8ae0c | 24782 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 24783 | { |
36586728 | 24784 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 24785 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
24786 | "offset %s [in module %s]"), |
24787 | sect_offset_str (sect_off), | |
976ca316 | 24788 | bfd_get_filename (per_objfile->objfile->obfd)); |
10b3939b | 24789 | |
976ca316 | 24790 | gdb_assert (per_objfile->per_bfd->all_comp_units[low-1]->sect_off |
9c541725 | 24791 | <= sect_off); |
976ca316 | 24792 | return per_objfile->per_bfd->all_comp_units[low-1]; |
ae038cb0 DJ |
24793 | } |
24794 | else | |
24795 | { | |
976ca316 | 24796 | if (low == per_objfile->per_bfd->all_comp_units.size () - 1 |
9c541725 | 24797 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 24798 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 24799 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
24800 | return this_cu; |
24801 | } | |
24802 | } | |
24803 | ||
22b6cd70 TT |
24804 | #if GDB_SELF_TEST |
24805 | ||
24806 | namespace selftests { | |
24807 | namespace find_containing_comp_unit { | |
24808 | ||
24809 | static void | |
24810 | run_test () | |
24811 | { | |
24812 | struct dwarf2_per_cu_data one {}; | |
24813 | struct dwarf2_per_cu_data two {}; | |
24814 | struct dwarf2_per_cu_data three {}; | |
24815 | struct dwarf2_per_cu_data four {}; | |
24816 | ||
24817 | one.length = 5; | |
24818 | two.sect_off = sect_offset (one.length); | |
24819 | two.length = 7; | |
24820 | ||
24821 | three.length = 5; | |
24822 | three.is_dwz = 1; | |
24823 | four.sect_off = sect_offset (three.length); | |
24824 | four.length = 7; | |
24825 | four.is_dwz = 1; | |
24826 | ||
24827 | std::vector<dwarf2_per_cu_data *> units; | |
24828 | units.push_back (&one); | |
24829 | units.push_back (&two); | |
24830 | units.push_back (&three); | |
24831 | units.push_back (&four); | |
24832 | ||
24833 | int result; | |
24834 | ||
24835 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
24836 | SELF_CHECK (units[result] == &one); | |
24837 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
24838 | SELF_CHECK (units[result] == &one); | |
24839 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
24840 | SELF_CHECK (units[result] == &two); | |
24841 | ||
24842 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
24843 | SELF_CHECK (units[result] == &three); | |
24844 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
24845 | SELF_CHECK (units[result] == &three); | |
24846 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
24847 | SELF_CHECK (units[result] == &four); | |
24848 | } | |
24849 | ||
24850 | } | |
24851 | } | |
24852 | ||
24853 | #endif /* GDB_SELF_TEST */ | |
24854 | ||
9e021579 | 24855 | /* Initialize dwarf2_cu to read PER_CU, in the context of PER_OBJFILE. */ |
93311388 | 24856 | |
9e021579 SM |
24857 | dwarf2_cu::dwarf2_cu (dwarf2_per_cu_data *per_cu, |
24858 | dwarf2_per_objfile *per_objfile) | |
24859 | : per_cu (per_cu), | |
24860 | per_objfile (per_objfile), | |
9068261f AB |
24861 | mark (false), |
24862 | has_loclist (false), | |
24863 | checked_producer (false), | |
24864 | producer_is_gxx_lt_4_6 (false), | |
24865 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 24866 | producer_is_icc (false), |
9068261f | 24867 | producer_is_icc_lt_14 (false), |
c258c396 | 24868 | producer_is_codewarrior (false), |
9068261f | 24869 | processing_has_namespace_info (false) |
93311388 | 24870 | { |
9816fde3 JK |
24871 | } |
24872 | ||
24873 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
24874 | ||
24875 | static void | |
95554aad TT |
24876 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
24877 | enum language pretend_language) | |
9816fde3 JK |
24878 | { |
24879 | struct attribute *attr; | |
24880 | ||
24881 | /* Set the language we're debugging. */ | |
24882 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 24883 | if (attr != nullptr) |
529908cb | 24884 | set_cu_language (attr->constant_value (0), cu); |
9816fde3 | 24885 | else |
9cded63f | 24886 | { |
95554aad | 24887 | cu->language = pretend_language; |
9cded63f TT |
24888 | cu->language_defn = language_def (cu->language); |
24889 | } | |
dee91e82 | 24890 | |
7d45c7c3 | 24891 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
24892 | } |
24893 | ||
7188ed02 | 24894 | /* See read.h. */ |
ae038cb0 | 24895 | |
7188ed02 SM |
24896 | dwarf2_cu * |
24897 | dwarf2_per_objfile::get_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 24898 | { |
7188ed02 SM |
24899 | auto it = m_dwarf2_cus.find (per_cu); |
24900 | if (it == m_dwarf2_cus.end ()) | |
24901 | return nullptr; | |
ae038cb0 | 24902 | |
7188ed02 SM |
24903 | return it->second; |
24904 | } | |
24905 | ||
24906 | /* See read.h. */ | |
24907 | ||
24908 | void | |
24909 | dwarf2_per_objfile::set_cu (dwarf2_per_cu_data *per_cu, dwarf2_cu *cu) | |
24910 | { | |
24911 | gdb_assert (this->get_cu (per_cu) == nullptr); | |
24912 | ||
24913 | m_dwarf2_cus[per_cu] = cu; | |
24914 | } | |
24915 | ||
24916 | /* See read.h. */ | |
24917 | ||
24918 | void | |
24919 | dwarf2_per_objfile::age_comp_units () | |
24920 | { | |
24921 | /* Start by clearing all marks. */ | |
24922 | for (auto pair : m_dwarf2_cus) | |
24923 | pair.second->mark = false; | |
24924 | ||
24925 | /* Traverse all CUs, mark them and their dependencies if used recently | |
24926 | enough. */ | |
24927 | for (auto pair : m_dwarf2_cus) | |
ae038cb0 | 24928 | { |
7188ed02 SM |
24929 | dwarf2_cu *cu = pair.second; |
24930 | ||
24931 | cu->last_used++; | |
24932 | if (cu->last_used <= dwarf_max_cache_age) | |
24933 | dwarf2_mark (cu); | |
ae038cb0 DJ |
24934 | } |
24935 | ||
7188ed02 SM |
24936 | /* Delete all CUs still not marked. */ |
24937 | for (auto it = m_dwarf2_cus.begin (); it != m_dwarf2_cus.end ();) | |
ae038cb0 | 24938 | { |
7188ed02 | 24939 | dwarf2_cu *cu = it->second; |
ae038cb0 | 24940 | |
7188ed02 | 24941 | if (!cu->mark) |
ae038cb0 | 24942 | { |
7188ed02 SM |
24943 | delete cu; |
24944 | it = m_dwarf2_cus.erase (it); | |
ae038cb0 DJ |
24945 | } |
24946 | else | |
7188ed02 | 24947 | it++; |
ae038cb0 DJ |
24948 | } |
24949 | } | |
24950 | ||
7188ed02 | 24951 | /* See read.h. */ |
ae038cb0 | 24952 | |
7188ed02 SM |
24953 | void |
24954 | dwarf2_per_objfile::remove_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 24955 | { |
7188ed02 SM |
24956 | auto it = m_dwarf2_cus.find (per_cu); |
24957 | if (it == m_dwarf2_cus.end ()) | |
24958 | return; | |
ae038cb0 | 24959 | |
7188ed02 | 24960 | delete it->second; |
ae038cb0 | 24961 | |
7188ed02 SM |
24962 | m_dwarf2_cus.erase (it); |
24963 | } | |
ae038cb0 | 24964 | |
7188ed02 SM |
24965 | dwarf2_per_objfile::~dwarf2_per_objfile () |
24966 | { | |
24967 | remove_all_cus (); | |
ae038cb0 DJ |
24968 | } |
24969 | ||
dee91e82 DE |
24970 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
24971 | We store these in a hash table separate from the DIEs, and preserve them | |
24972 | when the DIEs are flushed out of cache. | |
24973 | ||
24974 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 24975 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
24976 | or the type may come from a DWO file. Furthermore, while it's more logical |
24977 | to use per_cu->section+offset, with Fission the section with the data is in | |
24978 | the DWO file but we don't know that section at the point we need it. | |
24979 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
24980 | because we can enter the lookup routine, get_die_type_at_offset, from | |
24981 | outside this file, and thus won't necessarily have PER_CU->cu. | |
24982 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 24983 | |
dee91e82 | 24984 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 24985 | { |
dee91e82 | 24986 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 24987 | sect_offset sect_off; |
1c379e20 DJ |
24988 | struct type *type; |
24989 | }; | |
24990 | ||
dee91e82 | 24991 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
24992 | |
24993 | static hashval_t | |
dee91e82 | 24994 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 24995 | { |
9a3c8263 SM |
24996 | const struct dwarf2_per_cu_offset_and_type *ofs |
24997 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 24998 | |
9c541725 | 24999 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25000 | } |
25001 | ||
dee91e82 | 25002 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25003 | |
25004 | static int | |
dee91e82 | 25005 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25006 | { |
9a3c8263 SM |
25007 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25008 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25009 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25010 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25011 | |
dee91e82 | 25012 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25013 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25014 | } |
25015 | ||
25016 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25017 | table if necessary. For convenience, return TYPE. |
25018 | ||
25019 | The DIEs reading must have careful ordering to: | |
85102364 | 25020 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
25021 | reading current DIE. |
25022 | * Not trying to dereference contents of still incompletely read in types | |
25023 | while reading in other DIEs. | |
25024 | * Enable referencing still incompletely read in types just by a pointer to | |
25025 | the type without accessing its fields. | |
25026 | ||
25027 | Therefore caller should follow these rules: | |
25028 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25029 | before building the type and calling set_die_type. | |
e71ec853 | 25030 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25031 | possible before fetching more types to complete the current type. |
25032 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25033 | |
f792889a | 25034 | static struct type * |
57567375 TT |
25035 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
25036 | bool skip_data_location) | |
1c379e20 | 25037 | { |
976ca316 | 25038 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
dee91e82 | 25039 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
976ca316 | 25040 | struct objfile *objfile = per_objfile->objfile; |
3cdcd0ce JB |
25041 | struct attribute *attr; |
25042 | struct dynamic_prop prop; | |
1c379e20 | 25043 | |
b4ba55a1 JB |
25044 | /* For Ada types, make sure that the gnat-specific data is always |
25045 | initialized (if not already set). There are a few types where | |
25046 | we should not be doing so, because the type-specific area is | |
25047 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25048 | where the type-specific area is used to store the floatformat). | |
25049 | But this is not a problem, because the gnat-specific information | |
25050 | is actually not needed for these types. */ | |
25051 | if (need_gnat_info (cu) | |
78134374 SM |
25052 | && type->code () != TYPE_CODE_FUNC |
25053 | && type->code () != TYPE_CODE_FLT | |
25054 | && type->code () != TYPE_CODE_METHODPTR | |
25055 | && type->code () != TYPE_CODE_MEMBERPTR | |
25056 | && type->code () != TYPE_CODE_METHOD | |
09584414 | 25057 | && type->code () != TYPE_CODE_FIXED_POINT |
b4ba55a1 JB |
25058 | && !HAVE_GNAT_AUX_INFO (type)) |
25059 | INIT_GNAT_SPECIFIC (type); | |
25060 | ||
3f2f83dd KB |
25061 | /* Read DW_AT_allocated and set in type. */ |
25062 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
9cdf9820 | 25063 | if (attr != NULL) |
3f2f83dd | 25064 | { |
293e7e51 | 25065 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 25066 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 25067 | type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); |
3f2f83dd | 25068 | } |
3f2f83dd KB |
25069 | |
25070 | /* Read DW_AT_associated and set in type. */ | |
25071 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
9cdf9820 | 25072 | if (attr != NULL) |
3f2f83dd | 25073 | { |
293e7e51 | 25074 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 25075 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 25076 | type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); |
3f2f83dd | 25077 | } |
3f2f83dd | 25078 | |
3cdcd0ce | 25079 | /* Read DW_AT_data_location and set in type. */ |
57567375 TT |
25080 | if (!skip_data_location) |
25081 | { | |
25082 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
25083 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) | |
25084 | type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); | |
25085 | } | |
3cdcd0ce | 25086 | |
976ca316 SM |
25087 | if (per_objfile->die_type_hash == NULL) |
25088 | per_objfile->die_type_hash | |
0335378b TT |
25089 | = htab_up (htab_create_alloc (127, |
25090 | per_cu_offset_and_type_hash, | |
25091 | per_cu_offset_and_type_eq, | |
25092 | NULL, xcalloc, xfree)); | |
1c379e20 | 25093 | |
dee91e82 | 25094 | ofs.per_cu = cu->per_cu; |
9c541725 | 25095 | ofs.sect_off = die->sect_off; |
1c379e20 | 25096 | ofs.type = type; |
dee91e82 | 25097 | slot = (struct dwarf2_per_cu_offset_and_type **) |
976ca316 | 25098 | htab_find_slot (per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 25099 | if (*slot) |
b98664d3 | 25100 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 25101 | sect_offset_str (die->sect_off)); |
8d749320 SM |
25102 | *slot = XOBNEW (&objfile->objfile_obstack, |
25103 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25104 | **slot = ofs; |
f792889a | 25105 | return type; |
1c379e20 DJ |
25106 | } |
25107 | ||
9c541725 | 25108 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25109 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25110 | |
25111 | static struct type * | |
9c541725 | 25112 | get_die_type_at_offset (sect_offset sect_off, |
aa66c379 | 25113 | dwarf2_per_cu_data *per_cu, |
976ca316 | 25114 | dwarf2_per_objfile *per_objfile) |
1c379e20 | 25115 | { |
dee91e82 | 25116 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 25117 | |
976ca316 | 25118 | if (per_objfile->die_type_hash == NULL) |
f792889a | 25119 | return NULL; |
1c379e20 | 25120 | |
dee91e82 | 25121 | ofs.per_cu = per_cu; |
9c541725 | 25122 | ofs.sect_off = sect_off; |
9a3c8263 | 25123 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
976ca316 | 25124 | htab_find (per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
25125 | if (slot) |
25126 | return slot->type; | |
25127 | else | |
25128 | return NULL; | |
25129 | } | |
25130 | ||
02142a6c | 25131 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25132 | or return NULL if DIE does not have a saved type. */ |
25133 | ||
25134 | static struct type * | |
25135 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25136 | { | |
aa66c379 | 25137 | return get_die_type_at_offset (die->sect_off, cu->per_cu, cu->per_objfile); |
673bfd45 DE |
25138 | } |
25139 | ||
10b3939b DJ |
25140 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25141 | ||
25142 | static void | |
25143 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25144 | struct dwarf2_per_cu_data *ref_per_cu) | |
25145 | { | |
25146 | void **slot; | |
25147 | ||
25148 | if (cu->dependencies == NULL) | |
25149 | cu->dependencies | |
25150 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25151 | NULL, &cu->comp_unit_obstack, | |
25152 | hashtab_obstack_allocate, | |
25153 | dummy_obstack_deallocate); | |
25154 | ||
25155 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25156 | if (*slot == NULL) | |
25157 | *slot = ref_per_cu; | |
25158 | } | |
1c379e20 | 25159 | |
f504f079 DE |
25160 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25161 | Set the mark field in every compilation unit in the | |
7188ed02 SM |
25162 | cache that we must keep because we are keeping CU. |
25163 | ||
25164 | DATA is the dwarf2_per_objfile object in which to look up CUs. */ | |
ae038cb0 | 25165 | |
10b3939b DJ |
25166 | static int |
25167 | dwarf2_mark_helper (void **slot, void *data) | |
25168 | { | |
7188ed02 SM |
25169 | dwarf2_per_cu_data *per_cu = (dwarf2_per_cu_data *) *slot; |
25170 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) data; | |
25171 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); | |
d07ed419 JK |
25172 | |
25173 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25174 | reading of the chain. As such dependencies remain valid it is not much | |
25175 | useful to track and undo them during QUIT cleanups. */ | |
7188ed02 | 25176 | if (cu == nullptr) |
d07ed419 JK |
25177 | return 1; |
25178 | ||
7188ed02 | 25179 | if (cu->mark) |
10b3939b | 25180 | return 1; |
10b3939b | 25181 | |
7188ed02 SM |
25182 | cu->mark = true; |
25183 | ||
25184 | if (cu->dependencies != nullptr) | |
25185 | htab_traverse (cu->dependencies, dwarf2_mark_helper, per_objfile); | |
10b3939b DJ |
25186 | |
25187 | return 1; | |
25188 | } | |
25189 | ||
f504f079 DE |
25190 | /* Set the mark field in CU and in every other compilation unit in the |
25191 | cache that we must keep because we are keeping CU. */ | |
25192 | ||
ae038cb0 DJ |
25193 | static void |
25194 | dwarf2_mark (struct dwarf2_cu *cu) | |
25195 | { | |
25196 | if (cu->mark) | |
25197 | return; | |
7188ed02 | 25198 | |
9068261f | 25199 | cu->mark = true; |
ae038cb0 | 25200 | |
7188ed02 SM |
25201 | if (cu->dependencies != nullptr) |
25202 | htab_traverse (cu->dependencies, dwarf2_mark_helper, cu->per_objfile); | |
72bf9492 DJ |
25203 | } |
25204 | ||
72bf9492 DJ |
25205 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25206 | is its offset in .debug_info for this objfile. */ | |
25207 | ||
25208 | static hashval_t | |
25209 | partial_die_hash (const void *item) | |
25210 | { | |
9a3c8263 SM |
25211 | const struct partial_die_info *part_die |
25212 | = (const struct partial_die_info *) item; | |
9a619af0 | 25213 | |
9c541725 | 25214 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25215 | } |
25216 | ||
25217 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25218 | are equal if they have the same offset. */ | |
25219 | ||
25220 | static int | |
25221 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25222 | { | |
9a3c8263 SM |
25223 | const struct partial_die_info *part_die_lhs |
25224 | = (const struct partial_die_info *) item_lhs; | |
25225 | const struct partial_die_info *part_die_rhs | |
25226 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25227 | |
9c541725 | 25228 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25229 | } |
25230 | ||
3c3bb058 AB |
25231 | struct cmd_list_element *set_dwarf_cmdlist; |
25232 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 25233 | |
9291a0cd | 25234 | static void |
cd4fb1b2 SM |
25235 | show_check_physname (struct ui_file *file, int from_tty, |
25236 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25237 | { |
cd4fb1b2 SM |
25238 | fprintf_filtered (file, |
25239 | _("Whether to check \"physname\" is %s.\n"), | |
25240 | value); | |
9291a0cd TT |
25241 | } |
25242 | ||
6c265988 | 25243 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 25244 | void |
6c265988 | 25245 | _initialize_dwarf2_read () |
9291a0cd | 25246 | { |
0743fc83 | 25247 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 25248 | Set DWARF specific variables.\n\ |
590042fc | 25249 | Configure DWARF variables such as the cache size."), |
0743fc83 TT |
25250 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
25251 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 25252 | |
0743fc83 | 25253 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
25254 | Show DWARF specific variables.\n\ |
25255 | Show DWARF variables such as the cache size."), | |
0743fc83 TT |
25256 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
25257 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 25258 | |
cd4fb1b2 SM |
25259 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25260 | &dwarf_max_cache_age, _("\ | |
25261 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25262 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25263 | A higher limit means that cached compilation units will be stored\n\ | |
25264 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25265 | caching, which can slow down startup."), | |
25266 | NULL, | |
25267 | show_dwarf_max_cache_age, | |
25268 | &set_dwarf_cmdlist, | |
25269 | &show_dwarf_cmdlist); | |
156942c7 | 25270 | |
cd4fb1b2 SM |
25271 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25272 | Set debugging of the DWARF reader."), _("\ | |
25273 | Show debugging of the DWARF reader."), _("\ | |
25274 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25275 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25276 | information. A value greater than 1 provides more verbose information."), | |
25277 | NULL, | |
25278 | NULL, | |
25279 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25280 | |
cd4fb1b2 SM |
25281 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25282 | Set debugging of the DWARF DIE reader."), _("\ | |
25283 | Show debugging of the DWARF DIE reader."), _("\ | |
25284 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25285 | The value is the maximum depth to print."), | |
25286 | NULL, | |
25287 | NULL, | |
25288 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25289 | |
cd4fb1b2 SM |
25290 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25291 | Set debugging of the dwarf line reader."), _("\ | |
25292 | Show debugging of the dwarf line reader."), _("\ | |
25293 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25294 | A value of 1 (one) provides basic information.\n\ | |
25295 | A value greater than 1 provides more verbose information."), | |
25296 | NULL, | |
25297 | NULL, | |
25298 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25299 | |
cd4fb1b2 SM |
25300 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25301 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25302 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25303 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25304 | the demangler."), | |
25305 | NULL, show_check_physname, | |
25306 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25307 | |
e615022a DE |
25308 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25309 | no_class, &use_deprecated_index_sections, _("\ | |
25310 | Set whether to use deprecated gdb_index sections."), _("\ | |
25311 | Show whether to use deprecated gdb_index sections."), _("\ | |
25312 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25313 | Normally they are ignored either because of a missing feature or\n\ | |
25314 | performance issue.\n\ | |
25315 | Warning: This option must be enabled before gdb reads the file."), | |
25316 | NULL, | |
25317 | NULL, | |
25318 | &setlist, &showlist); | |
25319 | ||
f1e6e072 TT |
25320 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25321 | &dwarf2_locexpr_funcs); | |
25322 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25323 | &dwarf2_loclist_funcs); | |
25324 | ||
25325 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25326 | &dwarf2_block_frame_base_locexpr_funcs); | |
25327 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25328 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25329 | |
25330 | #if GDB_SELF_TEST | |
25331 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25332 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
25333 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
25334 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 25335 | #endif |
6502dd73 | 25336 | } |