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 | ||
c4973306 | 2188 | /* See dwarf2read.h. */ |
36586728 | 2189 | |
c4973306 | 2190 | struct dwz_file * |
c3699833 | 2191 | dwarf2_get_dwz_file (dwarf2_per_bfd *per_bfd) |
36586728 | 2192 | { |
36586728 | 2193 | const char *filename; |
acd13123 | 2194 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2195 | size_t buildid_len; |
2196 | bfd_byte *buildid; | |
36586728 | 2197 | |
c3699833 SM |
2198 | if (per_bfd->dwz_file != NULL) |
2199 | return per_bfd->dwz_file.get (); | |
36586728 | 2200 | |
4db1a1dc | 2201 | bfd_set_error (bfd_error_no_error); |
791afaa2 | 2202 | gdb::unique_xmalloc_ptr<char> data |
c3699833 | 2203 | (bfd_get_alt_debug_link_info (per_bfd->obfd, |
791afaa2 | 2204 | &buildid_len_arg, &buildid)); |
4db1a1dc TT |
2205 | if (data == NULL) |
2206 | { | |
2207 | if (bfd_get_error () == bfd_error_no_error) | |
2208 | return NULL; | |
2209 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2210 | bfd_errmsg (bfd_get_error ())); | |
2211 | } | |
791afaa2 TT |
2212 | |
2213 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2214 | |
acd13123 TT |
2215 | buildid_len = (size_t) buildid_len_arg; |
2216 | ||
791afaa2 | 2217 | filename = data.get (); |
d721ba37 PA |
2218 | |
2219 | std::string abs_storage; | |
36586728 TT |
2220 | if (!IS_ABSOLUTE_PATH (filename)) |
2221 | { | |
14278e1f | 2222 | gdb::unique_xmalloc_ptr<char> abs |
c3699833 | 2223 | = gdb_realpath (bfd_get_filename (per_bfd->obfd)); |
36586728 | 2224 | |
14278e1f | 2225 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2226 | filename = abs_storage.c_str (); |
36586728 TT |
2227 | } |
2228 | ||
dc294be5 TT |
2229 | /* First try the file name given in the section. If that doesn't |
2230 | work, try to use the build-id instead. */ | |
ad80db5b | 2231 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget)); |
dc294be5 | 2232 | if (dwz_bfd != NULL) |
36586728 | 2233 | { |
192b62ce | 2234 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2235 | dwz_bfd.reset (nullptr); |
36586728 TT |
2236 | } |
2237 | ||
dc294be5 TT |
2238 | if (dwz_bfd == NULL) |
2239 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2240 | ||
0d79cdc4 AM |
2241 | if (dwz_bfd == nullptr) |
2242 | { | |
2243 | gdb::unique_xmalloc_ptr<char> alt_filename; | |
c3699833 | 2244 | const char *origname = bfd_get_filename (per_bfd->obfd); |
0d79cdc4 AM |
2245 | |
2246 | scoped_fd fd (debuginfod_debuginfo_query (buildid, | |
2247 | buildid_len, | |
2248 | origname, | |
2249 | &alt_filename)); | |
2250 | ||
2251 | if (fd.get () >= 0) | |
2252 | { | |
2253 | /* File successfully retrieved from server. */ | |
ad80db5b | 2254 | dwz_bfd = gdb_bfd_open (alt_filename.get (), gnutarget); |
0d79cdc4 AM |
2255 | |
2256 | if (dwz_bfd == nullptr) | |
2257 | warning (_("File \"%s\" from debuginfod cannot be opened as bfd"), | |
2258 | alt_filename.get ()); | |
2259 | else if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) | |
2260 | dwz_bfd.reset (nullptr); | |
2261 | } | |
2262 | } | |
2263 | ||
dc294be5 TT |
2264 | if (dwz_bfd == NULL) |
2265 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
c3699833 | 2266 | bfd_get_filename (per_bfd->obfd)); |
dc294be5 | 2267 | |
7ff8cb8c TT |
2268 | std::unique_ptr<struct dwz_file> result |
2269 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2270 | |
5bb6e9dd TT |
2271 | for (asection *sec : gdb_bfd_sections (result->dwz_bfd)) |
2272 | locate_dwz_sections (result->dwz_bfd.get (), sec, result.get ()); | |
36586728 | 2273 | |
c3699833 SM |
2274 | gdb_bfd_record_inclusion (per_bfd->obfd, result->dwz_bfd.get ()); |
2275 | per_bfd->dwz_file = std::move (result); | |
2276 | return per_bfd->dwz_file.get (); | |
36586728 | 2277 | } |
9291a0cd | 2278 | \f |
7b9f3c50 DE |
2279 | /* DWARF quick_symbols_functions support. */ |
2280 | ||
2281 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2282 | unique line tables, so we maintain a separate table of all .debug_line | |
2283 | derived entries to support the sharing. | |
2284 | All the quick functions need is the list of file names. We discard the | |
2285 | line_header when we're done and don't need to record it here. */ | |
2286 | struct quick_file_names | |
2287 | { | |
094b34ac DE |
2288 | /* The data used to construct the hash key. */ |
2289 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2290 | |
2291 | /* The number of entries in file_names, real_names. */ | |
2292 | unsigned int num_file_names; | |
2293 | ||
2294 | /* The file names from the line table, after being run through | |
2295 | file_full_name. */ | |
2296 | const char **file_names; | |
2297 | ||
2298 | /* The file names from the line table after being run through | |
2299 | gdb_realpath. These are computed lazily. */ | |
2300 | const char **real_names; | |
2301 | }; | |
2302 | ||
2303 | /* When using the index (and thus not using psymtabs), each CU has an | |
2304 | object of this type. This is used to hold information needed by | |
2305 | the various "quick" methods. */ | |
2306 | struct dwarf2_per_cu_quick_data | |
2307 | { | |
2308 | /* The file table. This can be NULL if there was no file table | |
2309 | or it's currently not read in. | |
5989a64e | 2310 | NOTE: This points into dwarf2_per_objfile->per_bfd->quick_file_names_table. */ |
7b9f3c50 DE |
2311 | struct quick_file_names *file_names; |
2312 | ||
7b9f3c50 DE |
2313 | /* A temporary mark bit used when iterating over all CUs in |
2314 | expand_symtabs_matching. */ | |
2315 | unsigned int mark : 1; | |
2316 | ||
2317 | /* True if we've tried to read the file table and found there isn't one. | |
2318 | There will be no point in trying to read it again next time. */ | |
2319 | unsigned int no_file_data : 1; | |
2320 | }; | |
2321 | ||
094b34ac DE |
2322 | /* Utility hash function for a stmt_list_hash. */ |
2323 | ||
2324 | static hashval_t | |
2325 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2326 | { | |
2327 | hashval_t v = 0; | |
2328 | ||
2329 | if (stmt_list_hash->dwo_unit != NULL) | |
2330 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2331 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2332 | return v; |
2333 | } | |
2334 | ||
2335 | /* Utility equality function for a stmt_list_hash. */ | |
2336 | ||
2337 | static int | |
2338 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2339 | const struct stmt_list_hash *rhs) | |
2340 | { | |
2341 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2342 | return 0; | |
2343 | if (lhs->dwo_unit != NULL | |
2344 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2345 | return 0; | |
2346 | ||
9c541725 | 2347 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2348 | } |
2349 | ||
7b9f3c50 DE |
2350 | /* Hash function for a quick_file_names. */ |
2351 | ||
2352 | static hashval_t | |
2353 | hash_file_name_entry (const void *e) | |
2354 | { | |
9a3c8263 SM |
2355 | const struct quick_file_names *file_data |
2356 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2357 | |
094b34ac | 2358 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2359 | } |
2360 | ||
2361 | /* Equality function for a quick_file_names. */ | |
2362 | ||
2363 | static int | |
2364 | eq_file_name_entry (const void *a, const void *b) | |
2365 | { | |
9a3c8263 SM |
2366 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2367 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2368 | |
094b34ac | 2369 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2370 | } |
2371 | ||
2372 | /* Delete function for a quick_file_names. */ | |
2373 | ||
2374 | static void | |
2375 | delete_file_name_entry (void *e) | |
2376 | { | |
9a3c8263 | 2377 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2378 | int i; |
2379 | ||
2380 | for (i = 0; i < file_data->num_file_names; ++i) | |
2381 | { | |
2382 | xfree ((void*) file_data->file_names[i]); | |
2383 | if (file_data->real_names) | |
2384 | xfree ((void*) file_data->real_names[i]); | |
2385 | } | |
2386 | ||
45940949 TT |
2387 | /* The space for the struct itself lives on the obstack, so we don't |
2388 | free it here. */ | |
7b9f3c50 DE |
2389 | } |
2390 | ||
2391 | /* Create a quick_file_names hash table. */ | |
2392 | ||
5895093f | 2393 | static htab_up |
7b9f3c50 DE |
2394 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2395 | { | |
5895093f TT |
2396 | return htab_up (htab_create_alloc (nr_initial_entries, |
2397 | hash_file_name_entry, eq_file_name_entry, | |
2398 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2399 | } |
9291a0cd | 2400 | |
ab432490 SM |
2401 | /* Read in CU (dwarf2_cu object) for PER_CU in the context of PER_OBJFILE. This |
2402 | function is unrelated to symtabs, symtab would have to be created afterwards. | |
2403 | You should call age_cached_comp_units after processing the CU. */ | |
918dd910 | 2404 | |
1b555f17 | 2405 | static dwarf2_cu * |
ab432490 SM |
2406 | load_cu (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
2407 | bool skip_partial) | |
918dd910 | 2408 | { |
3019eac3 | 2409 | if (per_cu->is_debug_types) |
ab432490 | 2410 | load_full_type_unit (per_cu, per_objfile); |
918dd910 | 2411 | else |
4a636814 SM |
2412 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
2413 | skip_partial, language_minimal); | |
918dd910 | 2414 | |
7188ed02 SM |
2415 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
2416 | if (cu == nullptr) | |
1b555f17 | 2417 | return nullptr; /* Dummy CU. */ |
2dc860c0 | 2418 | |
7188ed02 | 2419 | dwarf2_find_base_address (cu->dies, cu); |
1b555f17 | 2420 | |
7188ed02 | 2421 | return cu; |
918dd910 JK |
2422 | } |
2423 | ||
1350c3b4 | 2424 | /* Read in the symbols for PER_CU in the context of PER_OBJFILE. */ |
2fdf6df6 | 2425 | |
9291a0cd | 2426 | static void |
97a1449a | 2427 | dw2_do_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2428 | dwarf2_per_objfile *per_objfile, bool skip_partial) |
9291a0cd | 2429 | { |
f4dc4d17 DE |
2430 | /* Skip type_unit_groups, reading the type units they contain |
2431 | is handled elsewhere. */ | |
197400e8 | 2432 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2433 | return; |
2434 | ||
b303c6f6 AB |
2435 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2436 | the queue. After this point we're guaranteed to leave this function | |
2437 | with the dwarf queue empty. */ | |
bf6e5d01 | 2438 | dwarf2_queue_guard q_guard (per_objfile); |
9291a0cd | 2439 | |
976ca316 | 2440 | if (!per_objfile->symtab_set_p (per_cu)) |
95554aad | 2441 | { |
976ca316 SM |
2442 | queue_comp_unit (per_cu, per_objfile, language_minimal); |
2443 | dwarf2_cu *cu = load_cu (per_cu, per_objfile, skip_partial); | |
89e63ee4 DE |
2444 | |
2445 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2446 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2447 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2448 | if (!per_cu->is_debug_types | |
1b555f17 SM |
2449 | && cu != NULL |
2450 | && cu->dwo_unit != NULL | |
976ca316 SM |
2451 | && per_objfile->per_bfd->index_table != NULL |
2452 | && per_objfile->per_bfd->index_table->version <= 7 | |
89e63ee4 | 2453 | /* DWP files aren't supported yet. */ |
976ca316 | 2454 | && get_dwp_file (per_objfile) == NULL) |
1b555f17 | 2455 | queue_and_load_all_dwo_tus (cu); |
95554aad | 2456 | } |
9291a0cd | 2457 | |
976ca316 | 2458 | process_queue (per_objfile); |
9291a0cd TT |
2459 | |
2460 | /* Age the cache, releasing compilation units that have not | |
2461 | been used recently. */ | |
976ca316 | 2462 | per_objfile->age_comp_units (); |
9291a0cd TT |
2463 | } |
2464 | ||
97a1449a SM |
2465 | /* Ensure that the symbols for PER_CU have been read in. DWARF2_PER_OBJFILE is |
2466 | the per-objfile for which this symtab is instantiated. | |
2467 | ||
2468 | Returns the resulting symbol table. */ | |
2fdf6df6 | 2469 | |
43f3e411 | 2470 | static struct compunit_symtab * |
97a1449a | 2471 | dw2_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2472 | dwarf2_per_objfile *per_objfile, |
97a1449a | 2473 | bool skip_partial) |
9291a0cd | 2474 | { |
976ca316 | 2475 | gdb_assert (per_objfile->per_bfd->using_index); |
af758d11 | 2476 | |
976ca316 | 2477 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd | 2478 | { |
976ca316 | 2479 | free_cached_comp_units freer (per_objfile); |
c83dd867 | 2480 | scoped_restore decrementer = increment_reading_symtab (); |
976ca316 SM |
2481 | dw2_do_instantiate_symtab (per_cu, per_objfile, skip_partial); |
2482 | process_cu_includes (per_objfile); | |
9291a0cd | 2483 | } |
f194fefb | 2484 | |
976ca316 | 2485 | return per_objfile->get_symtab (per_cu); |
9291a0cd TT |
2486 | } |
2487 | ||
ff4c9fec | 2488 | /* See declaration. */ |
f4dc4d17 | 2489 | |
ff4c9fec | 2490 | dwarf2_per_cu_data * |
5989a64e | 2491 | dwarf2_per_bfd::get_cutu (int index) |
ff4c9fec | 2492 | { |
b76e467d | 2493 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2494 | { |
b76e467d | 2495 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2496 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2497 | return &this->all_type_units[index]->per_cu; |
2498 | } | |
f4dc4d17 | 2499 | |
ff4c9fec SM |
2500 | return this->all_comp_units[index]; |
2501 | } | |
f4dc4d17 | 2502 | |
ff4c9fec | 2503 | /* See declaration. */ |
2fdf6df6 | 2504 | |
ff4c9fec | 2505 | dwarf2_per_cu_data * |
5989a64e | 2506 | dwarf2_per_bfd::get_cu (int index) |
1fd400ff | 2507 | { |
b76e467d | 2508 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2509 | |
ff4c9fec | 2510 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2511 | } |
2512 | ||
ff4c9fec | 2513 | /* See declaration. */ |
f4dc4d17 | 2514 | |
ff4c9fec | 2515 | signatured_type * |
5989a64e | 2516 | dwarf2_per_bfd::get_tu (int index) |
f4dc4d17 | 2517 | { |
b2bdb8cf | 2518 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2519 | |
ff4c9fec | 2520 | return this->all_type_units[index]; |
1fd400ff TT |
2521 | } |
2522 | ||
d3473f0c TT |
2523 | /* See read.h. */ |
2524 | ||
2525 | dwarf2_per_cu_data * | |
5989a64e | 2526 | dwarf2_per_bfd::allocate_per_cu () |
d3473f0c TT |
2527 | { |
2528 | dwarf2_per_cu_data *result = OBSTACK_ZALLOC (&obstack, dwarf2_per_cu_data); | |
1859c670 | 2529 | result->per_bfd = this; |
d3473f0c TT |
2530 | result->index = m_num_psymtabs++; |
2531 | return result; | |
2532 | } | |
2533 | ||
2534 | /* See read.h. */ | |
2535 | ||
2536 | signatured_type * | |
5989a64e | 2537 | dwarf2_per_bfd::allocate_signatured_type () |
d3473f0c TT |
2538 | { |
2539 | signatured_type *result = OBSTACK_ZALLOC (&obstack, signatured_type); | |
1859c670 | 2540 | result->per_cu.per_bfd = this; |
d3473f0c TT |
2541 | result->per_cu.index = m_num_psymtabs++; |
2542 | return result; | |
2543 | } | |
2544 | ||
168c9250 | 2545 | /* Return a new dwarf2_per_cu_data allocated on the per-bfd |
45940949 | 2546 | obstack, and constructed with the specified field values. */ |
4b514bc8 JK |
2547 | |
2548 | static dwarf2_per_cu_data * | |
168c9250 SM |
2549 | create_cu_from_index_list (dwarf2_per_bfd *per_bfd, |
2550 | struct dwarf2_section_info *section, | |
2551 | int is_dwz, | |
2552 | sect_offset sect_off, ULONGEST length) | |
4b514bc8 | 2553 | { |
168c9250 | 2554 | dwarf2_per_cu_data *the_cu = per_bfd->allocate_per_cu (); |
4b514bc8 JK |
2555 | the_cu->sect_off = sect_off; |
2556 | the_cu->length = length; | |
4b514bc8 | 2557 | the_cu->section = section; |
168c9250 | 2558 | the_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 2559 | struct dwarf2_per_cu_quick_data); |
4b514bc8 JK |
2560 | the_cu->is_dwz = is_dwz; |
2561 | return the_cu; | |
2562 | } | |
2563 | ||
2ec9a5e0 TT |
2564 | /* A helper for create_cus_from_index that handles a given list of |
2565 | CUs. */ | |
2fdf6df6 | 2566 | |
74a0d9f6 | 2567 | static void |
168c9250 | 2568 | create_cus_from_index_list (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2569 | const gdb_byte *cu_list, offset_type n_elements, |
2570 | struct dwarf2_section_info *section, | |
b76e467d | 2571 | int is_dwz) |
9291a0cd | 2572 | { |
12359b5e | 2573 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2574 | { |
74a0d9f6 | 2575 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2576 | |
2577 | sect_offset sect_off | |
2578 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2579 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2580 | cu_list += 2 * 8; |
2581 | ||
b76e467d | 2582 | dwarf2_per_cu_data *per_cu |
168c9250 SM |
2583 | = create_cu_from_index_list (per_bfd, section, is_dwz, sect_off, |
2584 | length); | |
2585 | per_bfd->all_comp_units.push_back (per_cu); | |
9291a0cd | 2586 | } |
9291a0cd TT |
2587 | } |
2588 | ||
2ec9a5e0 | 2589 | /* Read the CU list from the mapped index, and use it to create all |
168c9250 | 2590 | the CU objects for PER_BFD. */ |
2ec9a5e0 | 2591 | |
74a0d9f6 | 2592 | static void |
168c9250 | 2593 | create_cus_from_index (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2594 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2595 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2596 | { | |
168c9250 SM |
2597 | gdb_assert (per_bfd->all_comp_units.empty ()); |
2598 | per_bfd->all_comp_units.reserve ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2599 | |
168c9250 SM |
2600 | create_cus_from_index_list (per_bfd, cu_list, cu_list_elements, |
2601 | &per_bfd->info, 0); | |
2ec9a5e0 TT |
2602 | |
2603 | if (dwz_elements == 0) | |
74a0d9f6 | 2604 | return; |
2ec9a5e0 | 2605 | |
168c9250 SM |
2606 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
2607 | create_cus_from_index_list (per_bfd, dwz_list, dwz_elements, | |
b76e467d | 2608 | &dwz->info, 1); |
2ec9a5e0 TT |
2609 | } |
2610 | ||
1fd400ff | 2611 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2612 | |
74a0d9f6 | 2613 | static void |
12359b5e | 2614 | create_signatured_type_table_from_index |
168c9250 SM |
2615 | (dwarf2_per_bfd *per_bfd, struct dwarf2_section_info *section, |
2616 | const gdb_byte *bytes, offset_type elements) | |
1fd400ff | 2617 | { |
168c9250 SM |
2618 | gdb_assert (per_bfd->all_type_units.empty ()); |
2619 | per_bfd->all_type_units.reserve (elements / 3); | |
1fd400ff | 2620 | |
298e9637 | 2621 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2622 | |
12359b5e | 2623 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2624 | { |
52dc124a | 2625 | struct signatured_type *sig_type; |
9c541725 | 2626 | ULONGEST signature; |
1fd400ff | 2627 | void **slot; |
9c541725 | 2628 | cu_offset type_offset_in_tu; |
1fd400ff | 2629 | |
74a0d9f6 | 2630 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2631 | sect_offset sect_off |
2632 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2633 | type_offset_in_tu | |
2634 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2635 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2636 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2637 | bytes += 3 * 8; | |
2638 | ||
168c9250 | 2639 | sig_type = per_bfd->allocate_signatured_type (); |
52dc124a | 2640 | sig_type->signature = signature; |
9c541725 | 2641 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2642 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2643 | sig_type->per_cu.section = section; |
9c541725 | 2644 | sig_type->per_cu.sect_off = sect_off; |
52dc124a | 2645 | sig_type->per_cu.v.quick |
168c9250 | 2646 | = OBSTACK_ZALLOC (&per_bfd->obstack, |
1fd400ff TT |
2647 | struct dwarf2_per_cu_quick_data); |
2648 | ||
b0b6a987 | 2649 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2650 | *slot = sig_type; |
1fd400ff | 2651 | |
168c9250 | 2652 | per_bfd->all_type_units.push_back (sig_type); |
1fd400ff TT |
2653 | } |
2654 | ||
168c9250 | 2655 | per_bfd->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2656 | } |
2657 | ||
927aa2e7 JK |
2658 | /* Create the signatured type hash table from .debug_names. */ |
2659 | ||
2660 | static void | |
2661 | create_signatured_type_table_from_debug_names | |
976ca316 | 2662 | (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2663 | const mapped_debug_names &map, |
2664 | struct dwarf2_section_info *section, | |
2665 | struct dwarf2_section_info *abbrev_section) | |
2666 | { | |
976ca316 | 2667 | struct objfile *objfile = per_objfile->objfile; |
ed2dc618 | 2668 | |
96b79293 TT |
2669 | section->read (objfile); |
2670 | abbrev_section->read (objfile); | |
927aa2e7 | 2671 | |
976ca316 SM |
2672 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
2673 | per_objfile->per_bfd->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2674 | |
298e9637 | 2675 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2676 | |
2677 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2678 | { | |
2679 | struct signatured_type *sig_type; | |
927aa2e7 | 2680 | void **slot; |
927aa2e7 JK |
2681 | |
2682 | sect_offset sect_off | |
2683 | = (sect_offset) (extract_unsigned_integer | |
2684 | (map.tu_table_reordered + i * map.offset_size, | |
2685 | map.offset_size, | |
2686 | map.dwarf5_byte_order)); | |
2687 | ||
2688 | comp_unit_head cu_header; | |
976ca316 | 2689 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 | 2690 | abbrev_section, |
927aa2e7 JK |
2691 | section->buffer + to_underlying (sect_off), |
2692 | rcuh_kind::TYPE); | |
2693 | ||
976ca316 | 2694 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
927aa2e7 JK |
2695 | sig_type->signature = cu_header.signature; |
2696 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2697 | sig_type->per_cu.is_debug_types = 1; | |
2698 | sig_type->per_cu.section = section; | |
2699 | sig_type->per_cu.sect_off = sect_off; | |
927aa2e7 | 2700 | sig_type->per_cu.v.quick |
976ca316 | 2701 | = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
927aa2e7 JK |
2702 | struct dwarf2_per_cu_quick_data); |
2703 | ||
b0b6a987 | 2704 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2705 | *slot = sig_type; |
2706 | ||
976ca316 | 2707 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2708 | } |
2709 | ||
976ca316 | 2710 | per_objfile->per_bfd->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2711 | } |
2712 | ||
9291a0cd TT |
2713 | /* Read the address map data from the mapped index, and use it to |
2714 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2715 | |
9291a0cd | 2716 | static void |
976ca316 | 2717 | create_addrmap_from_index (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 2718 | struct mapped_index *index) |
9291a0cd | 2719 | { |
976ca316 | 2720 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 2721 | struct gdbarch *gdbarch = objfile->arch (); |
9291a0cd | 2722 | const gdb_byte *iter, *end; |
9291a0cd | 2723 | struct addrmap *mutable_map; |
9291a0cd TT |
2724 | CORE_ADDR baseaddr; |
2725 | ||
8268c778 PA |
2726 | auto_obstack temp_obstack; |
2727 | ||
9291a0cd TT |
2728 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2729 | ||
f00a2de2 PA |
2730 | iter = index->address_table.data (); |
2731 | end = iter + index->address_table.size (); | |
9291a0cd | 2732 | |
b3b3bada | 2733 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2734 | |
2735 | while (iter < end) | |
2736 | { | |
2737 | ULONGEST hi, lo, cu_index; | |
2738 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2739 | iter += 8; | |
2740 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2741 | iter += 8; | |
2742 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2743 | iter += 4; | |
f652bce2 | 2744 | |
24a55014 | 2745 | if (lo > hi) |
f652bce2 | 2746 | { |
b98664d3 | 2747 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2748 | hex_string (lo), hex_string (hi)); |
24a55014 | 2749 | continue; |
f652bce2 | 2750 | } |
24a55014 | 2751 | |
976ca316 | 2752 | if (cu_index >= per_objfile->per_bfd->all_comp_units.size ()) |
f652bce2 | 2753 | { |
b98664d3 | 2754 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2755 | (unsigned) cu_index); |
24a55014 | 2756 | continue; |
f652bce2 | 2757 | } |
24a55014 | 2758 | |
79748972 TT |
2759 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2760 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2761 | addrmap_set_empty (mutable_map, lo, hi - 1, |
976ca316 | 2762 | per_objfile->per_bfd->get_cu (cu_index)); |
9291a0cd TT |
2763 | } |
2764 | ||
d320c2b5 | 2765 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2766 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2767 | } |
2768 | ||
927aa2e7 JK |
2769 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2770 | populate the objfile's psymtabs_addrmap. */ | |
2771 | ||
2772 | static void | |
976ca316 | 2773 | create_addrmap_from_aranges (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2774 | struct dwarf2_section_info *section) |
2775 | { | |
976ca316 | 2776 | struct objfile *objfile = per_objfile->objfile; |
927aa2e7 | 2777 | bfd *abfd = objfile->obfd; |
08feed99 | 2778 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 2779 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2780 | |
2781 | auto_obstack temp_obstack; | |
2782 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2783 | ||
2784 | std::unordered_map<sect_offset, | |
2785 | dwarf2_per_cu_data *, | |
2786 | gdb::hash_enum<sect_offset>> | |
2787 | debug_info_offset_to_per_cu; | |
976ca316 | 2788 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 2789 | { |
927aa2e7 JK |
2790 | const auto insertpair |
2791 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2792 | if (!insertpair.second) | |
2793 | { | |
2794 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2795 | "debug_info_offset %s, ignoring .debug_aranges."), |
2796 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2797 | return; |
2798 | } | |
2799 | } | |
2800 | ||
96b79293 | 2801 | section->read (objfile); |
927aa2e7 JK |
2802 | |
2803 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2804 | ||
2805 | const gdb_byte *addr = section->buffer; | |
2806 | ||
2807 | while (addr < section->buffer + section->size) | |
2808 | { | |
2809 | const gdb_byte *const entry_addr = addr; | |
2810 | unsigned int bytes_read; | |
2811 | ||
2812 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2813 | &bytes_read); | |
2814 | addr += bytes_read; | |
2815 | ||
2816 | const gdb_byte *const entry_end = addr + entry_length; | |
2817 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2818 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2819 | if (addr + entry_length > section->buffer + section->size) | |
2820 | { | |
47e3f474 | 2821 | warning (_("Section .debug_aranges in %s entry at offset %s " |
dda83cd7 | 2822 | "length %s exceeds section length %s, " |
927aa2e7 | 2823 | "ignoring .debug_aranges."), |
47e3f474 TV |
2824 | objfile_name (objfile), |
2825 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2826 | plongest (bytes_read + entry_length), |
2827 | pulongest (section->size)); | |
2828 | return; | |
2829 | } | |
2830 | ||
2831 | /* The version number. */ | |
2832 | const uint16_t version = read_2_bytes (abfd, addr); | |
2833 | addr += 2; | |
2834 | if (version != 2) | |
2835 | { | |
47e3f474 | 2836 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2837 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2838 | objfile_name (objfile), |
2839 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2840 | return; |
2841 | } | |
2842 | ||
2843 | const uint64_t debug_info_offset | |
2844 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2845 | addr += offset_size; | |
2846 | const auto per_cu_it | |
2847 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2848 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2849 | { | |
47e3f474 | 2850 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2851 | "debug_info_offset %s does not exists, " |
2852 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2853 | objfile_name (objfile), |
2854 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2855 | pulongest (debug_info_offset)); |
2856 | return; | |
2857 | } | |
2858 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2859 | ||
2860 | const uint8_t address_size = *addr++; | |
2861 | if (address_size < 1 || address_size > 8) | |
2862 | { | |
47e3f474 | 2863 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2864 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2865 | objfile_name (objfile), |
2866 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2867 | return; |
2868 | } | |
2869 | ||
2870 | const uint8_t segment_selector_size = *addr++; | |
2871 | if (segment_selector_size != 0) | |
2872 | { | |
47e3f474 | 2873 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2874 | "segment_selector_size %u is not supported, " |
2875 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2876 | objfile_name (objfile), |
2877 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2878 | segment_selector_size); |
2879 | return; | |
2880 | } | |
2881 | ||
2882 | /* Must pad to an alignment boundary that is twice the address | |
dda83cd7 SM |
2883 | size. It is undocumented by the DWARF standard but GCC does |
2884 | use it. */ | |
927aa2e7 JK |
2885 | for (size_t padding = ((-(addr - section->buffer)) |
2886 | & (2 * address_size - 1)); | |
dda83cd7 | 2887 | padding > 0; padding--) |
927aa2e7 JK |
2888 | if (*addr++ != 0) |
2889 | { | |
47e3f474 | 2890 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2891 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2892 | objfile_name (objfile), |
2893 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2894 | return; |
2895 | } | |
2896 | ||
2897 | for (;;) | |
2898 | { | |
2899 | if (addr + 2 * address_size > entry_end) | |
2900 | { | |
47e3f474 | 2901 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2902 | "address list is not properly terminated, " |
2903 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2904 | objfile_name (objfile), |
2905 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2906 | return; |
2907 | } | |
2908 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2909 | dwarf5_byte_order); | |
2910 | addr += address_size; | |
2911 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2912 | dwarf5_byte_order); | |
2913 | addr += address_size; | |
2914 | if (start == 0 && length == 0) | |
2915 | break; | |
976ca316 | 2916 | if (start == 0 && !per_objfile->per_bfd->has_section_at_zero) |
927aa2e7 JK |
2917 | { |
2918 | /* Symbol was eliminated due to a COMDAT group. */ | |
2919 | continue; | |
2920 | } | |
2921 | ULONGEST end = start + length; | |
79748972 TT |
2922 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
2923 | - baseaddr); | |
2924 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
2925 | - baseaddr); | |
927aa2e7 JK |
2926 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
2927 | } | |
2928 | } | |
2929 | ||
d320c2b5 | 2930 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2931 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
2932 | } |
2933 | ||
9291a0cd TT |
2934 | /* Find a slot in the mapped index INDEX for the object named NAME. |
2935 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
2936 | constant pool and return true. If NAME cannot be found, return |
2937 | false. */ | |
2fdf6df6 | 2938 | |
109483d9 | 2939 | static bool |
9291a0cd TT |
2940 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
2941 | offset_type **vec_out) | |
2942 | { | |
0cf03b49 | 2943 | offset_type hash; |
9291a0cd | 2944 | offset_type slot, step; |
559a7a62 | 2945 | int (*cmp) (const char *, const char *); |
9291a0cd | 2946 | |
791afaa2 | 2947 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 2948 | if (current_language->la_language == language_cplus |
45280282 IB |
2949 | || current_language->la_language == language_fortran |
2950 | || current_language->la_language == language_d) | |
0cf03b49 JK |
2951 | { |
2952 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2953 | not contain any. */ | |
a8719064 | 2954 | |
72998fb3 | 2955 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2956 | { |
109483d9 | 2957 | without_params = cp_remove_params (name); |
0cf03b49 | 2958 | |
72998fb3 | 2959 | if (without_params != NULL) |
791afaa2 | 2960 | name = without_params.get (); |
0cf03b49 JK |
2961 | } |
2962 | } | |
2963 | ||
559a7a62 | 2964 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2965 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2966 | simulate our NAME being searched is also lowercased. */ |
2967 | hash = mapped_index_string_hash ((index->version == 4 | |
dda83cd7 | 2968 | && case_sensitivity == case_sensitive_off |
559a7a62 JK |
2969 | ? 5 : index->version), |
2970 | name); | |
2971 | ||
f00a2de2 PA |
2972 | slot = hash & (index->symbol_table.size () - 1); |
2973 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 2974 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2975 | |
2976 | for (;;) | |
2977 | { | |
9291a0cd | 2978 | const char *str; |
f00a2de2 PA |
2979 | |
2980 | const auto &bucket = index->symbol_table[slot]; | |
2981 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 2982 | return false; |
9291a0cd | 2983 | |
f00a2de2 | 2984 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 2985 | if (!cmp (name, str)) |
9291a0cd TT |
2986 | { |
2987 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 2988 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 2989 | return true; |
9291a0cd TT |
2990 | } |
2991 | ||
f00a2de2 | 2992 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
2993 | } |
2994 | } | |
2995 | ||
4485a1c1 SM |
2996 | /* A helper function that reads the .gdb_index from BUFFER and fills |
2997 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 2998 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
2999 | ok to use deprecated sections. |
3000 | ||
3001 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3002 | out parameters that are filled in with information about the CU and | |
3003 | TU lists in the section. | |
3004 | ||
4485a1c1 | 3005 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 3006 | |
d33bc52e | 3007 | static bool |
3810f182 | 3008 | read_gdb_index_from_buffer (const char *filename, |
4485a1c1 SM |
3009 | bool deprecated_ok, |
3010 | gdb::array_view<const gdb_byte> buffer, | |
3011 | struct mapped_index *map, | |
3012 | const gdb_byte **cu_list, | |
3013 | offset_type *cu_list_elements, | |
3014 | const gdb_byte **types_list, | |
3015 | offset_type *types_list_elements) | |
3016 | { | |
3017 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 3018 | |
9291a0cd | 3019 | /* Version check. */ |
4485a1c1 | 3020 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3021 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3022 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3023 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3024 | indices. */ |
831adc1f | 3025 | if (version < 4) |
481860b3 GB |
3026 | { |
3027 | static int warning_printed = 0; | |
3028 | if (!warning_printed) | |
3029 | { | |
3030 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3031 | filename); |
481860b3 GB |
3032 | warning_printed = 1; |
3033 | } | |
3034 | return 0; | |
3035 | } | |
3036 | /* Index version 4 uses a different hash function than index version | |
3037 | 5 and later. | |
3038 | ||
3039 | Versions earlier than 6 did not emit psymbols for inlined | |
3040 | functions. Using these files will cause GDB not to be able to | |
3041 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3042 | indices unless the user has done |
3043 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3044 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3045 | { |
3046 | static int warning_printed = 0; | |
3047 | if (!warning_printed) | |
3048 | { | |
e615022a DE |
3049 | warning (_("\ |
3050 | Skipping deprecated .gdb_index section in %s.\n\ | |
3051 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3052 | to use the section anyway."), | |
2ec9a5e0 | 3053 | filename); |
481860b3 GB |
3054 | warning_printed = 1; |
3055 | } | |
3056 | return 0; | |
3057 | } | |
796a7ff8 | 3058 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3059 | of the TU (for symbols coming from TUs), |
3060 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3061 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3062 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3063 | These are just performance bugs, and we can't distinguish gdb-generated | |
3064 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3065 | |
481860b3 | 3066 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3067 | longer backward compatible. */ |
796a7ff8 | 3068 | if (version > 8) |
594e8718 | 3069 | return 0; |
9291a0cd | 3070 | |
559a7a62 | 3071 | map->version = version; |
9291a0cd | 3072 | |
4485a1c1 | 3073 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3074 | |
4485a1c1 | 3075 | int i = 0; |
2ec9a5e0 TT |
3076 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3077 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3078 | / 8); | |
1fd400ff TT |
3079 | ++i; |
3080 | ||
2ec9a5e0 TT |
3081 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3082 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3083 | - MAYBE_SWAP (metadata[i])) | |
3084 | / 8); | |
987d643c | 3085 | ++i; |
1fd400ff | 3086 | |
f00a2de2 PA |
3087 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3088 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3089 | map->address_table | |
3090 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3091 | ++i; |
3092 | ||
f00a2de2 PA |
3093 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3094 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3095 | map->symbol_table | |
3096 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3097 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3098 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3099 | |
f00a2de2 | 3100 | ++i; |
f9d83a0b | 3101 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3102 | |
2ec9a5e0 TT |
3103 | return 1; |
3104 | } | |
3105 | ||
4485a1c1 SM |
3106 | /* Callback types for dwarf2_read_gdb_index. */ |
3107 | ||
3108 | typedef gdb::function_view | |
5989a64e | 3109 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_bfd *)> |
4485a1c1 SM |
3110 | get_gdb_index_contents_ftype; |
3111 | typedef gdb::function_view | |
3112 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3113 | get_gdb_index_contents_dwz_ftype; | |
3114 | ||
927aa2e7 | 3115 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3116 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3117 | ||
3118 | static int | |
4485a1c1 | 3119 | dwarf2_read_gdb_index |
976ca316 | 3120 | (dwarf2_per_objfile *per_objfile, |
4485a1c1 SM |
3121 | get_gdb_index_contents_ftype get_gdb_index_contents, |
3122 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3123 | { |
2ec9a5e0 TT |
3124 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3125 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3126 | struct dwz_file *dwz; |
976ca316 | 3127 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 3128 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
2ec9a5e0 | 3129 | |
4485a1c1 | 3130 | gdb::array_view<const gdb_byte> main_index_contents |
f8c41851 | 3131 | = get_gdb_index_contents (objfile, per_bfd); |
4485a1c1 SM |
3132 | |
3133 | if (main_index_contents.empty ()) | |
3134 | return 0; | |
3135 | ||
3063847f | 3136 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
3810f182 | 3137 | if (!read_gdb_index_from_buffer (objfile_name (objfile), |
4485a1c1 SM |
3138 | use_deprecated_index_sections, |
3139 | main_index_contents, map.get (), &cu_list, | |
3140 | &cu_list_elements, &types_list, | |
3141 | &types_list_elements)) | |
2ec9a5e0 TT |
3142 | return 0; |
3143 | ||
0fefef59 | 3144 | /* Don't use the index if it's empty. */ |
3063847f | 3145 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3146 | return 0; |
3147 | ||
2ec9a5e0 TT |
3148 | /* If there is a .dwz file, read it so we can get its CU list as |
3149 | well. */ | |
f8c41851 | 3150 | dwz = dwarf2_get_dwz_file (per_bfd); |
4db1a1dc | 3151 | if (dwz != NULL) |
2ec9a5e0 | 3152 | { |
2ec9a5e0 TT |
3153 | struct mapped_index dwz_map; |
3154 | const gdb_byte *dwz_types_ignore; | |
3155 | offset_type dwz_types_elements_ignore; | |
3156 | ||
4485a1c1 SM |
3157 | gdb::array_view<const gdb_byte> dwz_index_content |
3158 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3159 | ||
3160 | if (dwz_index_content.empty ()) | |
3161 | return 0; | |
3162 | ||
3810f182 | 3163 | if (!read_gdb_index_from_buffer (bfd_get_filename (dwz->dwz_bfd.get ()), |
00f93c44 | 3164 | 1, dwz_index_content, &dwz_map, |
4485a1c1 SM |
3165 | &dwz_list, &dwz_list_elements, |
3166 | &dwz_types_ignore, | |
3167 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3168 | { |
3169 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3170 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3171 | return 0; |
3172 | } | |
3173 | } | |
3174 | ||
f8c41851 SM |
3175 | create_cus_from_index (per_bfd, cu_list, cu_list_elements, dwz_list, |
3176 | dwz_list_elements); | |
1fd400ff | 3177 | |
8b70b953 TT |
3178 | if (types_list_elements) |
3179 | { | |
8b70b953 TT |
3180 | /* We can only handle a single .debug_types when we have an |
3181 | index. */ | |
f8c41851 | 3182 | if (per_bfd->types.size () != 1) |
8b70b953 TT |
3183 | return 0; |
3184 | ||
f8c41851 | 3185 | dwarf2_section_info *section = &per_bfd->types[0]; |
8b70b953 | 3186 | |
f8c41851 | 3187 | create_signatured_type_table_from_index (per_bfd, section, types_list, |
168c9250 | 3188 | types_list_elements); |
8b70b953 | 3189 | } |
9291a0cd | 3190 | |
976ca316 | 3191 | create_addrmap_from_index (per_objfile, map.get ()); |
9291a0cd | 3192 | |
f8c41851 SM |
3193 | per_bfd->index_table = std::move (map); |
3194 | per_bfd->using_index = 1; | |
3195 | per_bfd->quick_file_names_table = | |
3196 | create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
3197 | ||
3198 | /* Save partial symtabs in the per_bfd object, for the benefit of subsequent | |
3199 | objfiles using the same BFD. */ | |
3200 | gdb_assert (per_bfd->partial_symtabs == nullptr); | |
3201 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
9291a0cd TT |
3202 | |
3203 | return 1; | |
3204 | } | |
3205 | ||
dee91e82 | 3206 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3207 | |
dee91e82 DE |
3208 | static void |
3209 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3210 | const gdb_byte *info_ptr, |
3e225074 | 3211 | struct die_info *comp_unit_die) |
9291a0cd | 3212 | { |
dee91e82 | 3213 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3214 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
976ca316 | 3215 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
094b34ac | 3216 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3217 | struct attribute *attr; |
7b9f3c50 DE |
3218 | void **slot; |
3219 | struct quick_file_names *qfn; | |
9291a0cd | 3220 | |
0186c6a7 DE |
3221 | gdb_assert (! this_cu->is_debug_types); |
3222 | ||
07261596 TT |
3223 | /* Our callers never want to match partial units -- instead they |
3224 | will match the enclosing full CU. */ | |
3225 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3226 | { | |
3227 | this_cu->v.quick->no_file_data = 1; | |
3228 | return; | |
3229 | } | |
3230 | ||
0186c6a7 | 3231 | lh_cu = this_cu; |
7b9f3c50 | 3232 | slot = NULL; |
dee91e82 | 3233 | |
fff8551c | 3234 | line_header_up lh; |
9c541725 | 3235 | sect_offset line_offset {}; |
fff8551c | 3236 | |
dee91e82 | 3237 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
d4df075e | 3238 | if (attr != nullptr && attr->form_is_unsigned ()) |
9291a0cd | 3239 | { |
7b9f3c50 DE |
3240 | struct quick_file_names find_entry; |
3241 | ||
d4df075e | 3242 | line_offset = (sect_offset) attr->as_unsigned (); |
7b9f3c50 DE |
3243 | |
3244 | /* We may have already read in this line header (TU line header sharing). | |
3245 | If we have we're done. */ | |
094b34ac | 3246 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3247 | find_entry.hash.line_sect_off = line_offset; |
976ca316 | 3248 | slot = htab_find_slot (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 DE |
3249 | &find_entry, INSERT); |
3250 | if (*slot != NULL) | |
3251 | { | |
9a3c8263 | 3252 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3253 | return; |
7b9f3c50 DE |
3254 | } |
3255 | ||
3019eac3 | 3256 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3257 | } |
3258 | if (lh == NULL) | |
3259 | { | |
094b34ac | 3260 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3261 | return; |
9291a0cd TT |
3262 | } |
3263 | ||
976ca316 | 3264 | qfn = XOBNEW (&per_objfile->per_bfd->obstack, struct quick_file_names); |
094b34ac | 3265 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3266 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3267 | gdb_assert (slot != NULL); |
3268 | *slot = qfn; | |
9291a0cd | 3269 | |
d721ba37 | 3270 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3271 | |
aa391654 TT |
3272 | int offset = 0; |
3273 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3274 | ++offset; | |
3275 | ||
7ba99d21 | 3276 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3277 | qfn->file_names = |
976ca316 | 3278 | XOBNEWVEC (&per_objfile->per_bfd->obstack, const char *, |
45940949 | 3279 | qfn->num_file_names); |
aa391654 TT |
3280 | if (offset != 0) |
3281 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3282 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3283 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3284 | fnd.comp_dir).release (); | |
7b9f3c50 | 3285 | qfn->real_names = NULL; |
9291a0cd | 3286 | |
094b34ac | 3287 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3288 | } |
3289 | ||
3290 | /* A helper for the "quick" functions which attempts to read the line | |
3291 | table for THIS_CU. */ | |
3292 | ||
3293 | static struct quick_file_names * | |
ab432490 SM |
3294 | dw2_get_file_names (dwarf2_per_cu_data *this_cu, |
3295 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 3296 | { |
0186c6a7 DE |
3297 | /* This should never be called for TUs. */ |
3298 | gdb_assert (! this_cu->is_debug_types); | |
3299 | /* Nor type unit groups. */ | |
197400e8 | 3300 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3301 | |
dee91e82 DE |
3302 | if (this_cu->v.quick->file_names != NULL) |
3303 | return this_cu->v.quick->file_names; | |
3304 | /* If we know there is no line data, no point in looking again. */ | |
3305 | if (this_cu->v.quick->no_file_data) | |
3306 | return NULL; | |
3307 | ||
ab432490 | 3308 | cutu_reader reader (this_cu, per_objfile); |
c0ab21c2 | 3309 | if (!reader.dummy_p) |
3e225074 | 3310 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die); |
dee91e82 DE |
3311 | |
3312 | if (this_cu->v.quick->no_file_data) | |
3313 | return NULL; | |
3314 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3315 | } |
3316 | ||
3317 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3318 | real path for a given file name from the line table. */ |
2fdf6df6 | 3319 | |
9291a0cd | 3320 | static const char * |
976ca316 | 3321 | dw2_get_real_path (dwarf2_per_objfile *per_objfile, |
7b9f3c50 | 3322 | struct quick_file_names *qfn, int index) |
9291a0cd | 3323 | { |
7b9f3c50 | 3324 | if (qfn->real_names == NULL) |
976ca316 | 3325 | qfn->real_names = OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
26f2dc30 | 3326 | qfn->num_file_names, const char *); |
9291a0cd | 3327 | |
7b9f3c50 | 3328 | if (qfn->real_names[index] == NULL) |
14278e1f | 3329 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3330 | |
7b9f3c50 | 3331 | return qfn->real_names[index]; |
9291a0cd TT |
3332 | } |
3333 | ||
3334 | static struct symtab * | |
3335 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3336 | { | |
976ca316 SM |
3337 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3338 | dwarf2_per_cu_data *dwarf_cu = per_objfile->per_bfd->all_comp_units.back (); | |
3339 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, per_objfile, false); | |
ae2de4f8 | 3340 | |
43f3e411 DE |
3341 | if (cust == NULL) |
3342 | return NULL; | |
ed2dc618 | 3343 | |
43f3e411 | 3344 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3345 | } |
3346 | ||
7b9f3c50 DE |
3347 | /* Traversal function for dw2_forget_cached_source_info. */ |
3348 | ||
3349 | static int | |
3350 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3351 | { |
7b9f3c50 | 3352 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3353 | |
7b9f3c50 | 3354 | if (file_data->real_names) |
9291a0cd | 3355 | { |
7b9f3c50 | 3356 | int i; |
9291a0cd | 3357 | |
7b9f3c50 | 3358 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3359 | { |
7b9f3c50 DE |
3360 | xfree ((void*) file_data->real_names[i]); |
3361 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3362 | } |
3363 | } | |
7b9f3c50 DE |
3364 | |
3365 | return 1; | |
3366 | } | |
3367 | ||
3368 | static void | |
3369 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3370 | { | |
976ca316 | 3371 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
7b9f3c50 | 3372 | |
976ca316 | 3373 | htab_traverse_noresize (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 | 3374 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3375 | } |
3376 | ||
f8eba3c6 TT |
3377 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3378 | the symtabs and calls the iterator. */ | |
3379 | ||
3380 | static int | |
3381 | dw2_map_expand_apply (struct objfile *objfile, | |
3382 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3383 | const char *name, const char *real_path, |
14bc53a8 | 3384 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3385 | { |
43f3e411 | 3386 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3387 | |
3388 | /* Don't visit already-expanded CUs. */ | |
af758d11 SM |
3389 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3390 | if (per_objfile->symtab_set_p (per_cu)) | |
f8eba3c6 TT |
3391 | return 0; |
3392 | ||
3393 | /* This may expand more than one symtab, and we want to iterate over | |
3394 | all of them. */ | |
97a1449a | 3395 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
f8eba3c6 | 3396 | |
14bc53a8 PA |
3397 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3398 | last_made, callback); | |
f8eba3c6 TT |
3399 | } |
3400 | ||
3401 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3402 | ||
14bc53a8 PA |
3403 | static bool |
3404 | dw2_map_symtabs_matching_filename | |
3405 | (struct objfile *objfile, const char *name, const char *real_path, | |
3406 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3407 | { |
c011a4f4 | 3408 | const char *name_basename = lbasename (name); |
976ca316 | 3409 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 3410 | |
848e3e78 DE |
3411 | /* The rule is CUs specify all the files, including those used by |
3412 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3413 | |
976ca316 | 3414 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3415 | { |
3d7bb9d9 | 3416 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3417 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3418 | continue; |
3419 | ||
976ca316 | 3420 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3421 | if (file_data == NULL) |
9291a0cd TT |
3422 | continue; |
3423 | ||
b76e467d | 3424 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3425 | { |
7b9f3c50 | 3426 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3427 | const char *this_real_name; |
9291a0cd | 3428 | |
af529f8f | 3429 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3430 | { |
f5b95b50 | 3431 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3432 | callback)) |
3433 | return true; | |
288e77a7 | 3434 | continue; |
4aac40c8 | 3435 | } |
9291a0cd | 3436 | |
c011a4f4 DE |
3437 | /* Before we invoke realpath, which can get expensive when many |
3438 | files are involved, do a quick comparison of the basenames. */ | |
3439 | if (! basenames_may_differ | |
3440 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3441 | continue; | |
3442 | ||
976ca316 | 3443 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
da235a7c | 3444 | if (compare_filenames_for_search (this_real_name, name)) |
9291a0cd | 3445 | { |
da235a7c | 3446 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3447 | callback)) |
3448 | return true; | |
288e77a7 | 3449 | continue; |
da235a7c | 3450 | } |
9291a0cd | 3451 | |
da235a7c JK |
3452 | if (real_path != NULL) |
3453 | { | |
af529f8f JK |
3454 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3455 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3456 | if (this_real_name != NULL |
af529f8f | 3457 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3458 | { |
f5b95b50 | 3459 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3460 | callback)) |
3461 | return true; | |
288e77a7 | 3462 | continue; |
9291a0cd TT |
3463 | } |
3464 | } | |
3465 | } | |
3466 | } | |
3467 | ||
14bc53a8 | 3468 | return false; |
9291a0cd TT |
3469 | } |
3470 | ||
da51c347 DE |
3471 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3472 | ||
3473 | struct dw2_symtab_iterator | |
9291a0cd | 3474 | { |
ed2dc618 | 3475 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
976ca316 | 3476 | dwarf2_per_objfile *per_objfile; |
2b79f376 SM |
3477 | /* If set, only look for symbols that match that block. Valid values are |
3478 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3479 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3480 | /* The kind of symbol we're looking for. */ |
3481 | domain_enum domain; | |
3482 | /* The list of CUs from the index entry of the symbol, | |
3483 | or NULL if not found. */ | |
3484 | offset_type *vec; | |
3485 | /* The next element in VEC to look at. */ | |
3486 | int next; | |
3487 | /* The number of elements in VEC, or zero if there is no match. */ | |
3488 | int length; | |
8943b874 DE |
3489 | /* Have we seen a global version of the symbol? |
3490 | If so we can ignore all further global instances. | |
3491 | This is to work around gold/15646, inefficient gold-generated | |
3492 | indices. */ | |
3493 | int global_seen; | |
da51c347 | 3494 | }; |
9291a0cd | 3495 | |
e5f3ece2 | 3496 | /* Initialize the index symtab iterator ITER, common part. */ |
2fdf6df6 | 3497 | |
9291a0cd | 3498 | static void |
e5f3ece2 TV |
3499 | dw2_symtab_iter_init_common (struct dw2_symtab_iterator *iter, |
3500 | dwarf2_per_objfile *per_objfile, | |
3501 | gdb::optional<block_enum> block_index, | |
3502 | domain_enum domain) | |
da51c347 | 3503 | { |
976ca316 | 3504 | iter->per_objfile = per_objfile; |
da51c347 DE |
3505 | iter->block_index = block_index; |
3506 | iter->domain = domain; | |
3507 | iter->next = 0; | |
8943b874 | 3508 | iter->global_seen = 0; |
e5f3ece2 TV |
3509 | iter->vec = NULL; |
3510 | iter->length = 0; | |
3511 | } | |
da51c347 | 3512 | |
e5f3ece2 TV |
3513 | /* Initialize the index symtab iterator ITER, const char *NAME variant. */ |
3514 | ||
3515 | static void | |
3516 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3517 | dwarf2_per_objfile *per_objfile, | |
3518 | gdb::optional<block_enum> block_index, | |
3519 | domain_enum domain, | |
3520 | const char *name) | |
3521 | { | |
3522 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
ed2dc618 | 3523 | |
e5f3ece2 | 3524 | mapped_index *index = per_objfile->per_bfd->index_table.get (); |
ed2dc618 | 3525 | /* index is NULL if OBJF_READNOW. */ |
e5f3ece2 TV |
3526 | if (index == NULL) |
3527 | return; | |
3528 | ||
3529 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 | 3530 | iter->length = MAYBE_SWAP (*iter->vec); |
e5f3ece2 TV |
3531 | } |
3532 | ||
3533 | /* Initialize the index symtab iterator ITER, offset_type NAMEI variant. */ | |
3534 | ||
3535 | static void | |
3536 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3537 | dwarf2_per_objfile *per_objfile, | |
3538 | gdb::optional<block_enum> block_index, | |
3539 | domain_enum domain, offset_type namei) | |
3540 | { | |
3541 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
3542 | ||
3543 | mapped_index *index = per_objfile->per_bfd->index_table.get (); | |
3544 | /* index is NULL if OBJF_READNOW. */ | |
3545 | if (index == NULL) | |
3546 | return; | |
3547 | ||
3548 | gdb_assert (!index->symbol_name_slot_invalid (namei)); | |
3549 | const auto &bucket = index->symbol_table[namei]; | |
3550 | ||
3551 | iter->vec = (offset_type *) (index->constant_pool | |
3552 | + MAYBE_SWAP (bucket.vec)); | |
3553 | iter->length = MAYBE_SWAP (*iter->vec); | |
da51c347 DE |
3554 | } |
3555 | ||
3556 | /* Return the next matching CU or NULL if there are no more. */ | |
3557 | ||
3558 | static struct dwarf2_per_cu_data * | |
3559 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3560 | { | |
976ca316 | 3561 | dwarf2_per_objfile *per_objfile = iter->per_objfile; |
ed2dc618 | 3562 | |
da51c347 DE |
3563 | for ( ; iter->next < iter->length; ++iter->next) |
3564 | { | |
3565 | offset_type cu_index_and_attrs = | |
3566 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3567 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3568 | gdb_index_symbol_kind symbol_kind = |
3569 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3570 | /* Only check the symbol attributes if they're present. | |
3571 | Indices prior to version 7 don't record them, | |
3572 | and indices >= 7 may elide them for certain symbols | |
3573 | (gold does this). */ | |
3574 | int attrs_valid = | |
976ca316 | 3575 | (per_objfile->per_bfd->index_table->version >= 7 |
da51c347 DE |
3576 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3577 | ||
3190f0c6 | 3578 | /* Don't crash on bad data. */ |
976ca316 SM |
3579 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
3580 | + per_objfile->per_bfd->all_type_units.size ())) | |
3190f0c6 | 3581 | { |
b98664d3 | 3582 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 3583 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
3190f0c6 DE |
3584 | continue; |
3585 | } | |
3586 | ||
976ca316 | 3587 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
3190f0c6 | 3588 | |
da51c347 | 3589 | /* Skip if already read in. */ |
976ca316 | 3590 | if (per_objfile->symtab_set_p (per_cu)) |
da51c347 DE |
3591 | continue; |
3592 | ||
8943b874 DE |
3593 | /* Check static vs global. */ |
3594 | if (attrs_valid) | |
3595 | { | |
2b79f376 SM |
3596 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3597 | ||
3598 | if (iter->block_index.has_value ()) | |
3599 | { | |
3600 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3601 | ||
3602 | if (is_static != want_static) | |
3603 | continue; | |
3604 | } | |
3605 | ||
8943b874 | 3606 | /* Work around gold/15646. */ |
f030440d TV |
3607 | if (!is_static |
3608 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
3609 | { | |
3610 | if (iter->global_seen) | |
3611 | continue; | |
3612 | ||
3613 | iter->global_seen = 1; | |
3614 | } | |
8943b874 | 3615 | } |
da51c347 DE |
3616 | |
3617 | /* Only check the symbol's kind if it has one. */ | |
3618 | if (attrs_valid) | |
3619 | { | |
3620 | switch (iter->domain) | |
3621 | { | |
3622 | case VAR_DOMAIN: | |
3623 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3624 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3625 | /* Some types are also in VAR_DOMAIN. */ | |
3626 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3627 | continue; | |
3628 | break; | |
3629 | case STRUCT_DOMAIN: | |
3630 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3631 | continue; | |
3632 | break; | |
3633 | case LABEL_DOMAIN: | |
3634 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3635 | continue; | |
3636 | break; | |
59c35742 AB |
3637 | case MODULE_DOMAIN: |
3638 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3639 | continue; | |
3640 | break; | |
da51c347 DE |
3641 | default: |
3642 | break; | |
3643 | } | |
3644 | } | |
3645 | ||
3646 | ++iter->next; | |
3647 | return per_cu; | |
3648 | } | |
3649 | ||
3650 | return NULL; | |
3651 | } | |
3652 | ||
43f3e411 | 3653 | static struct compunit_symtab * |
c7f839cb | 3654 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3655 | const char *name, domain_enum domain) |
9291a0cd | 3656 | { |
43f3e411 | 3657 | struct compunit_symtab *stab_best = NULL; |
976ca316 | 3658 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 3659 | |
b5ec771e PA |
3660 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3661 | ||
ed2dc618 SM |
3662 | struct dw2_symtab_iterator iter; |
3663 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3664 | |
976ca316 | 3665 | dw2_symtab_iter_init (&iter, per_objfile, block_index, domain, name); |
9291a0cd | 3666 | |
ed2dc618 SM |
3667 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3668 | { | |
3669 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 3670 | struct compunit_symtab *stab |
976ca316 | 3671 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
ed2dc618 | 3672 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3673 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3674 | |
ed2dc618 SM |
3675 | sym = block_find_symbol (block, name, domain, |
3676 | block_find_non_opaque_type_preferred, | |
3677 | &with_opaque); | |
b2e2f908 | 3678 | |
ed2dc618 SM |
3679 | /* Some caution must be observed with overloaded functions |
3680 | and methods, since the index will not contain any overload | |
3681 | information (but NAME might contain it). */ | |
da51c347 | 3682 | |
ed2dc618 SM |
3683 | if (sym != NULL |
3684 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3685 | return stab; | |
3686 | if (with_opaque != NULL | |
3687 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3688 | stab_best = stab; | |
da51c347 | 3689 | |
ed2dc618 | 3690 | /* Keep looking through other CUs. */ |
9291a0cd | 3691 | } |
9291a0cd | 3692 | |
da51c347 | 3693 | return stab_best; |
9291a0cd TT |
3694 | } |
3695 | ||
3696 | static void | |
3697 | dw2_print_stats (struct objfile *objfile) | |
3698 | { | |
976ca316 SM |
3699 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3700 | int total = (per_objfile->per_bfd->all_comp_units.size () | |
3701 | + per_objfile->per_bfd->all_type_units.size ()); | |
ed2dc618 | 3702 | int count = 0; |
9291a0cd | 3703 | |
ed2dc618 | 3704 | for (int i = 0; i < total; ++i) |
9291a0cd | 3705 | { |
976ca316 | 3706 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3707 | |
976ca316 | 3708 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3709 | ++count; |
3710 | } | |
e4a48d9d | 3711 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3712 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3713 | } | |
3714 | ||
779bd270 DE |
3715 | /* This dumps minimal information about the index. |
3716 | It is called via "mt print objfiles". | |
3717 | One use is to verify .gdb_index has been loaded by the | |
3718 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3719 | ||
9291a0cd TT |
3720 | static void |
3721 | dw2_dump (struct objfile *objfile) | |
3722 | { | |
976ca316 | 3723 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 3724 | |
976ca316 | 3725 | gdb_assert (per_objfile->per_bfd->using_index); |
779bd270 | 3726 | printf_filtered (".gdb_index:"); |
976ca316 | 3727 | if (per_objfile->per_bfd->index_table != NULL) |
779bd270 DE |
3728 | { |
3729 | printf_filtered (" version %d\n", | |
976ca316 | 3730 | per_objfile->per_bfd->index_table->version); |
779bd270 DE |
3731 | } |
3732 | else | |
3733 | printf_filtered (" faked for \"readnow\"\n"); | |
3734 | printf_filtered ("\n"); | |
9291a0cd TT |
3735 | } |
3736 | ||
9291a0cd TT |
3737 | static void |
3738 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3739 | const char *func_name) | |
3740 | { | |
976ca316 | 3741 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
da51c347 | 3742 | |
ed2dc618 SM |
3743 | struct dw2_symtab_iterator iter; |
3744 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3745 | |
976ca316 | 3746 | dw2_symtab_iter_init (&iter, per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3747 | |
ed2dc618 | 3748 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3749 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
da51c347 | 3750 | |
9291a0cd TT |
3751 | } |
3752 | ||
3753 | static void | |
3754 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3755 | { | |
976ca316 SM |
3756 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3757 | int total_units = (per_objfile->per_bfd->all_comp_units.size () | |
3758 | + per_objfile->per_bfd->all_type_units.size ()); | |
9291a0cd | 3759 | |
ed2dc618 | 3760 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3761 | { |
976ca316 | 3762 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3763 | |
58f0c718 TT |
3764 | /* We don't want to directly expand a partial CU, because if we |
3765 | read it with the wrong language, then assertion failures can | |
3766 | be triggered later on. See PR symtab/23010. So, tell | |
3767 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3768 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
976ca316 | 3769 | dw2_instantiate_symtab (per_cu, per_objfile, true); |
9291a0cd TT |
3770 | } |
3771 | } | |
3772 | ||
3773 | static void | |
652a8996 JK |
3774 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3775 | const char *fullname) | |
9291a0cd | 3776 | { |
976ca316 | 3777 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
d4637a04 DE |
3778 | |
3779 | /* We don't need to consider type units here. | |
3780 | This is only called for examining code, e.g. expand_line_sal. | |
3781 | There can be an order of magnitude (or more) more type units | |
3782 | than comp units, and we avoid them if we can. */ | |
3783 | ||
976ca316 | 3784 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3785 | { |
3d7bb9d9 | 3786 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3787 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3788 | continue; |
3789 | ||
976ca316 | 3790 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3791 | if (file_data == NULL) |
9291a0cd TT |
3792 | continue; |
3793 | ||
b76e467d | 3794 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3795 | { |
652a8996 JK |
3796 | const char *this_fullname = file_data->file_names[j]; |
3797 | ||
3798 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3799 | { |
976ca316 | 3800 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
9291a0cd TT |
3801 | break; |
3802 | } | |
3803 | } | |
3804 | } | |
3805 | } | |
3806 | ||
9a0bacfb TV |
3807 | static void |
3808 | dw2_expand_symtabs_matching_symbol | |
3809 | (mapped_index_base &index, | |
3810 | const lookup_name_info &lookup_name_in, | |
3811 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3812 | enum search_domain kind, | |
fcf23d5b SM |
3813 | gdb::function_view<bool (offset_type)> match_callback, |
3814 | dwarf2_per_objfile *per_objfile); | |
9a0bacfb TV |
3815 | |
3816 | static void | |
3817 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
3818 | (dwarf2_per_cu_data *per_cu, |
3819 | dwarf2_per_objfile *per_objfile, | |
9a0bacfb TV |
3820 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3821 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify); | |
3822 | ||
9291a0cd | 3823 | static void |
199b4314 TT |
3824 | dw2_map_matching_symbols |
3825 | (struct objfile *objfile, | |
b054970d | 3826 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3827 | int global, |
3828 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3829 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3830 | { |
1aa98955 | 3831 | /* Used for Ada. */ |
976ca316 | 3832 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
1aa98955 | 3833 | |
9a0bacfb TV |
3834 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
3835 | ||
976ca316 | 3836 | if (per_objfile->per_bfd->index_table != nullptr) |
1aa98955 | 3837 | { |
976ca316 | 3838 | mapped_index &index = *per_objfile->per_bfd->index_table; |
1aa98955 | 3839 | |
9a0bacfb TV |
3840 | const char *match_name = name.ada ().lookup_name ().c_str (); |
3841 | auto matcher = [&] (const char *symname) | |
3842 | { | |
3843 | if (ordered_compare == nullptr) | |
3844 | return true; | |
3845 | return ordered_compare (symname, match_name) == 0; | |
3846 | }; | |
3847 | ||
3848 | dw2_expand_symtabs_matching_symbol (index, name, matcher, ALL_DOMAIN, | |
3849 | [&] (offset_type namei) | |
3850 | { | |
3851 | struct dw2_symtab_iterator iter; | |
3852 | struct dwarf2_per_cu_data *per_cu; | |
3853 | ||
976ca316 | 3854 | dw2_symtab_iter_init (&iter, per_objfile, block_kind, domain, |
e5f3ece2 | 3855 | namei); |
9a0bacfb | 3856 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3857 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 3858 | nullptr); |
9a0bacfb | 3859 | return true; |
976ca316 | 3860 | }, per_objfile); |
9a0bacfb TV |
3861 | } |
3862 | else | |
3863 | { | |
3864 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3865 | proceed assuming all symtabs have been read in. */ | |
3866 | } | |
1aa98955 TV |
3867 | |
3868 | for (compunit_symtab *cust : objfile->compunits ()) | |
3869 | { | |
3870 | const struct block *block; | |
3871 | ||
3872 | if (cust == NULL) | |
3873 | continue; | |
3874 | block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
3875 | if (!iterate_over_symbols_terminated (block, name, | |
3876 | domain, callback)) | |
3877 | return; | |
3878 | } | |
9291a0cd TT |
3879 | } |
3880 | ||
e1ef7d7a PA |
3881 | /* Starting from a search name, return the string that finds the upper |
3882 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3883 | list. Returns the empty string to indicate that the upper bound is | |
3884 | the end of the list. */ | |
3885 | ||
3886 | static std::string | |
3887 | make_sort_after_prefix_name (const char *search_name) | |
3888 | { | |
3889 | /* When looking to complete "func", we find the upper bound of all | |
3890 | symbols that start with "func" by looking for where we'd insert | |
3891 | the closest string that would follow "func" in lexicographical | |
3892 | order. Usually, that's "func"-with-last-character-incremented, | |
3893 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3894 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3895 | Especially mind the 0xff character, which is a valid character in | |
3896 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3897 | rule out compilers allowing it in identifiers. Note that | |
3898 | conveniently, strcmp/strcasecmp are specified to compare | |
3899 | characters interpreted as unsigned char. So what we do is treat | |
3900 | the whole string as a base 256 number composed of a sequence of | |
3901 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3902 | to 0, and carries 1 to the following more-significant position. | |
3903 | If the very first character in SEARCH_NAME ends up incremented | |
3904 | and carries/overflows, then the upper bound is the end of the | |
3905 | list. The string after the empty string is also the empty | |
3906 | string. | |
3907 | ||
3908 | Some examples of this operation: | |
3909 | ||
3910 | SEARCH_NAME => "+1" RESULT | |
3911 | ||
3912 | "abc" => "abd" | |
3913 | "ab\xff" => "ac" | |
3914 | "\xff" "a" "\xff" => "\xff" "b" | |
3915 | "\xff" => "" | |
3916 | "\xff\xff" => "" | |
3917 | "" => "" | |
3918 | ||
3919 | Then, with these symbols for example: | |
3920 | ||
3921 | func | |
3922 | func1 | |
3923 | fund | |
3924 | ||
3925 | completing "func" looks for symbols between "func" and | |
3926 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3927 | which finds "func" and "func1", but not "fund". | |
3928 | ||
3929 | And with: | |
3930 | ||
3931 | funcÿ (Latin1 'ÿ' [0xff]) | |
3932 | funcÿ1 | |
3933 | fund | |
3934 | ||
3935 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3936 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3937 | ||
3938 | And with: | |
3939 | ||
3940 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3941 | ÿÿ1 | |
3942 | ||
3943 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3944 | the end of the list. | |
3945 | */ | |
3946 | std::string after = search_name; | |
3947 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3948 | after.pop_back (); | |
3949 | if (!after.empty ()) | |
3950 | after.back () = (unsigned char) after.back () + 1; | |
3951 | return after; | |
3952 | } | |
3953 | ||
5c58de74 | 3954 | /* See declaration. */ |
61d96d7e | 3955 | |
5c58de74 PA |
3956 | std::pair<std::vector<name_component>::const_iterator, |
3957 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3958 | mapped_index_base::find_name_components_bounds |
fcf23d5b SM |
3959 | (const lookup_name_info &lookup_name_without_params, language lang, |
3960 | dwarf2_per_objfile *per_objfile) const | |
3f563c84 | 3961 | { |
5c58de74 PA |
3962 | auto *name_cmp |
3963 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3964 | |
3b00ef10 | 3965 | const char *lang_name |
e0802d59 | 3966 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 3967 | |
3f563c84 PA |
3968 | /* Comparison function object for lower_bound that matches against a |
3969 | given symbol name. */ | |
3970 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3971 | const char *name) | |
3972 | { | |
fcf23d5b | 3973 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3974 | const char *elem_name = elem_qualified + elem.name_offset; |
3975 | return name_cmp (elem_name, name) < 0; | |
3976 | }; | |
3977 | ||
3978 | /* Comparison function object for upper_bound that matches against a | |
3979 | given symbol name. */ | |
3980 | auto lookup_compare_upper = [&] (const char *name, | |
3981 | const name_component &elem) | |
3982 | { | |
fcf23d5b | 3983 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3984 | const char *elem_name = elem_qualified + elem.name_offset; |
3985 | return name_cmp (name, elem_name) < 0; | |
3986 | }; | |
3987 | ||
5c58de74 PA |
3988 | auto begin = this->name_components.begin (); |
3989 | auto end = this->name_components.end (); | |
3f563c84 PA |
3990 | |
3991 | /* Find the lower bound. */ | |
3992 | auto lower = [&] () | |
3993 | { | |
3b00ef10 | 3994 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3995 | return begin; |
3996 | else | |
3b00ef10 | 3997 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
3998 | } (); |
3999 | ||
4000 | /* Find the upper bound. */ | |
4001 | auto upper = [&] () | |
4002 | { | |
5c58de74 | 4003 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4004 | { |
e1ef7d7a PA |
4005 | /* In completion mode, we want UPPER to point past all |
4006 | symbols names that have the same prefix. I.e., with | |
4007 | these symbols, and completing "func": | |
4008 | ||
4009 | function << lower bound | |
4010 | function1 | |
4011 | other_function << upper bound | |
4012 | ||
4013 | We find the upper bound by looking for the insertion | |
4014 | point of "func"-with-last-character-incremented, | |
4015 | i.e. "fund". */ | |
3b00ef10 | 4016 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 4017 | if (after.empty ()) |
3f563c84 | 4018 | return end; |
e6b2f5ef PA |
4019 | return std::lower_bound (lower, end, after.c_str (), |
4020 | lookup_compare_lower); | |
3f563c84 PA |
4021 | } |
4022 | else | |
3b00ef10 | 4023 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
4024 | } (); |
4025 | ||
5c58de74 PA |
4026 | return {lower, upper}; |
4027 | } | |
4028 | ||
4029 | /* See declaration. */ | |
4030 | ||
4031 | void | |
fcf23d5b | 4032 | mapped_index_base::build_name_components (dwarf2_per_objfile *per_objfile) |
5c58de74 PA |
4033 | { |
4034 | if (!this->name_components.empty ()) | |
4035 | return; | |
4036 | ||
4037 | this->name_components_casing = case_sensitivity; | |
4038 | auto *name_cmp | |
4039 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4040 | ||
4041 | /* The code below only knows how to break apart components of C++ | |
4042 | symbol names (and other languages that use '::' as | |
3b00ef10 | 4043 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
4044 | auto count = this->symbol_name_count (); |
4045 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4046 | { |
44ed8f3e | 4047 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4048 | continue; |
4049 | ||
fcf23d5b | 4050 | const char *name = this->symbol_name_at (idx, per_objfile); |
5c58de74 PA |
4051 | |
4052 | /* Add each name component to the name component table. */ | |
4053 | unsigned int previous_len = 0; | |
3b00ef10 TT |
4054 | |
4055 | if (strstr (name, "::") != nullptr) | |
4056 | { | |
4057 | for (unsigned int current_len = cp_find_first_component (name); | |
4058 | name[current_len] != '\0'; | |
4059 | current_len += cp_find_first_component (name + current_len)) | |
4060 | { | |
4061 | gdb_assert (name[current_len] == ':'); | |
4062 | this->name_components.push_back ({previous_len, idx}); | |
4063 | /* Skip the '::'. */ | |
4064 | current_len += 2; | |
4065 | previous_len = current_len; | |
4066 | } | |
4067 | } | |
4068 | else | |
5c58de74 | 4069 | { |
3b00ef10 TT |
4070 | /* Handle the Ada encoded (aka mangled) form here. */ |
4071 | for (const char *iter = strstr (name, "__"); | |
4072 | iter != nullptr; | |
4073 | iter = strstr (iter, "__")) | |
4074 | { | |
4075 | this->name_components.push_back ({previous_len, idx}); | |
4076 | iter += 2; | |
4077 | previous_len = iter - name; | |
4078 | } | |
5c58de74 | 4079 | } |
3b00ef10 | 4080 | |
5c58de74 PA |
4081 | this->name_components.push_back ({previous_len, idx}); |
4082 | } | |
4083 | ||
4084 | /* Sort name_components elements by name. */ | |
4085 | auto name_comp_compare = [&] (const name_component &left, | |
4086 | const name_component &right) | |
4087 | { | |
fcf23d5b SM |
4088 | const char *left_qualified |
4089 | = this->symbol_name_at (left.idx, per_objfile); | |
4090 | const char *right_qualified | |
4091 | = this->symbol_name_at (right.idx, per_objfile); | |
5c58de74 PA |
4092 | |
4093 | const char *left_name = left_qualified + left.name_offset; | |
4094 | const char *right_name = right_qualified + right.name_offset; | |
4095 | ||
4096 | return name_cmp (left_name, right_name) < 0; | |
4097 | }; | |
4098 | ||
4099 | std::sort (this->name_components.begin (), | |
4100 | this->name_components.end (), | |
4101 | name_comp_compare); | |
4102 | } | |
4103 | ||
4104 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4105 | mapped_index_base instead of the containing objfile. This is split |
4106 | to a separate function in order to be able to unit test the | |
4107 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4108 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4109 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4110 | |
4111 | static void | |
4112 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4113 | (mapped_index_base &index, |
5c58de74 PA |
4114 | const lookup_name_info &lookup_name_in, |
4115 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4116 | enum search_domain kind, | |
fcf23d5b SM |
4117 | gdb::function_view<bool (offset_type)> match_callback, |
4118 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4119 | { |
4120 | lookup_name_info lookup_name_without_params | |
4121 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4122 | |
4123 | /* Build the symbol name component sorted vector, if we haven't | |
4124 | yet. */ | |
fcf23d5b | 4125 | index.build_name_components (per_objfile); |
5c58de74 | 4126 | |
3f563c84 PA |
4127 | /* The same symbol may appear more than once in the range though. |
4128 | E.g., if we're looking for symbols that complete "w", and we have | |
4129 | a symbol named "w1::w2", we'll find the two name components for | |
4130 | that same symbol in the range. To be sure we only call the | |
4131 | callback once per symbol, we first collect the symbol name | |
4132 | indexes that matched in a temporary vector and ignore | |
4133 | duplicates. */ | |
4134 | std::vector<offset_type> matches; | |
3f563c84 | 4135 | |
3b00ef10 TT |
4136 | struct name_and_matcher |
4137 | { | |
4138 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 4139 | const char *name; |
3b00ef10 TT |
4140 | |
4141 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4142 | { |
ecc6c606 | 4143 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
4144 | } |
4145 | }; | |
4146 | ||
4147 | /* A vector holding all the different symbol name matchers, for all | |
4148 | languages. */ | |
4149 | std::vector<name_and_matcher> matchers; | |
4150 | ||
4151 | for (int i = 0; i < nr_languages; i++) | |
4152 | { | |
4153 | enum language lang_e = (enum language) i; | |
4154 | ||
4155 | const language_defn *lang = language_def (lang_e); | |
4156 | symbol_name_matcher_ftype *name_matcher | |
c9debfb9 | 4157 | = lang->get_symbol_name_matcher (lookup_name_without_params); |
3f563c84 | 4158 | |
3b00ef10 | 4159 | name_and_matcher key { |
dda83cd7 | 4160 | name_matcher, |
3b00ef10 TT |
4161 | lookup_name_without_params.language_lookup_name (lang_e) |
4162 | }; | |
4163 | ||
4164 | /* Don't insert the same comparison routine more than once. | |
4165 | Note that we do this linear walk. This is not a problem in | |
4166 | practice because the number of supported languages is | |
4167 | low. */ | |
4168 | if (std::find (matchers.begin (), matchers.end (), key) | |
4169 | != matchers.end ()) | |
9291a0cd | 4170 | continue; |
3b00ef10 TT |
4171 | matchers.push_back (std::move (key)); |
4172 | ||
4173 | auto bounds | |
4174 | = index.find_name_components_bounds (lookup_name_without_params, | |
fcf23d5b | 4175 | lang_e, per_objfile); |
3b00ef10 TT |
4176 | |
4177 | /* Now for each symbol name in range, check to see if we have a name | |
4178 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4179 | ||
4180 | for (; bounds.first != bounds.second; ++bounds.first) | |
4181 | { | |
fcf23d5b SM |
4182 | const char *qualified |
4183 | = index.symbol_name_at (bounds.first->idx, per_objfile); | |
3b00ef10 TT |
4184 | |
4185 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4186 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4187 | continue; | |
9291a0cd | 4188 | |
3b00ef10 TT |
4189 | matches.push_back (bounds.first->idx); |
4190 | } | |
3f563c84 PA |
4191 | } |
4192 | ||
4193 | std::sort (matches.begin (), matches.end ()); | |
4194 | ||
4195 | /* Finally call the callback, once per match. */ | |
4196 | ULONGEST prev = -1; | |
4197 | for (offset_type idx : matches) | |
4198 | { | |
4199 | if (prev != idx) | |
4200 | { | |
3b00ef10 TT |
4201 | if (!match_callback (idx)) |
4202 | break; | |
3f563c84 PA |
4203 | prev = idx; |
4204 | } | |
4205 | } | |
4206 | ||
4207 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4208 | (offset_type)-1 are both possible values. */ | |
4209 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4210 | } | |
4211 | ||
c62446b1 PA |
4212 | #if GDB_SELF_TEST |
4213 | ||
4214 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4215 | ||
a3c5fafd PA |
4216 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4217 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4218 | mapped_index_base interface. Builds an index from the symbol list | |
4219 | passed as parameter to the constructor. */ | |
4220 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4221 | { |
4222 | public: | |
a3c5fafd PA |
4223 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4224 | : m_symbol_table (symbols) | |
c62446b1 PA |
4225 | {} |
4226 | ||
a3c5fafd | 4227 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4228 | |
a3c5fafd | 4229 | /* Return the number of names in the symbol table. */ |
632e107b | 4230 | size_t symbol_name_count () const override |
c62446b1 | 4231 | { |
a3c5fafd | 4232 | return m_symbol_table.size (); |
c62446b1 PA |
4233 | } |
4234 | ||
a3c5fafd | 4235 | /* Get the name of the symbol at IDX in the symbol table. */ |
fcf23d5b SM |
4236 | const char *symbol_name_at |
4237 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
a3c5fafd PA |
4238 | { |
4239 | return m_symbol_table[idx]; | |
4240 | } | |
c62446b1 | 4241 | |
a3c5fafd PA |
4242 | private: |
4243 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4244 | }; |
4245 | ||
4246 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4247 | string, to pass to print routines. */ | |
4248 | ||
4249 | static const char * | |
4250 | string_or_null (const char *str) | |
4251 | { | |
4252 | return str != NULL ? str : "<null>"; | |
4253 | } | |
4254 | ||
4255 | /* Check if a lookup_name_info built from | |
4256 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4257 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4258 | matching order. If no match expected, then an empty list is | |
4259 | specified. Returns true on success. On failure prints a warning | |
4260 | indicating the file:line that failed, and returns false. */ | |
4261 | ||
4262 | static bool | |
4263 | check_match (const char *file, int line, | |
4264 | mock_mapped_index &mock_index, | |
4265 | const char *name, symbol_name_match_type match_type, | |
4266 | bool completion_mode, | |
fcf23d5b SM |
4267 | std::initializer_list<const char *> expected_list, |
4268 | dwarf2_per_objfile *per_objfile) | |
c62446b1 PA |
4269 | { |
4270 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4271 | ||
4272 | bool matched = true; | |
4273 | ||
4274 | auto mismatch = [&] (const char *expected_str, | |
4275 | const char *got) | |
4276 | { | |
4277 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4278 | "expected=\"%s\", got=\"%s\"\n"), | |
4279 | file, line, | |
4280 | (match_type == symbol_name_match_type::FULL | |
4281 | ? "FULL" : "WILD"), | |
4282 | name, string_or_null (expected_str), string_or_null (got)); | |
4283 | matched = false; | |
4284 | }; | |
4285 | ||
4286 | auto expected_it = expected_list.begin (); | |
4287 | auto expected_end = expected_list.end (); | |
4288 | ||
a3c5fafd | 4289 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4290 | NULL, ALL_DOMAIN, |
4291 | [&] (offset_type idx) | |
4292 | { | |
fcf23d5b | 4293 | const char *matched_name = mock_index.symbol_name_at (idx, per_objfile); |
c62446b1 PA |
4294 | const char *expected_str |
4295 | = expected_it == expected_end ? NULL : *expected_it++; | |
4296 | ||
4297 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4298 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4299 | return true; |
fcf23d5b | 4300 | }, per_objfile); |
c62446b1 PA |
4301 | |
4302 | const char *expected_str | |
4303 | = expected_it == expected_end ? NULL : *expected_it++; | |
4304 | if (expected_str != NULL) | |
4305 | mismatch (expected_str, NULL); | |
4306 | ||
4307 | return matched; | |
4308 | } | |
4309 | ||
4310 | /* The symbols added to the mock mapped_index for testing (in | |
4311 | canonical form). */ | |
4312 | static const char *test_symbols[] = { | |
4313 | "function", | |
4314 | "std::bar", | |
4315 | "std::zfunction", | |
4316 | "std::zfunction2", | |
4317 | "w1::w2", | |
4318 | "ns::foo<char*>", | |
4319 | "ns::foo<int>", | |
4320 | "ns::foo<long>", | |
a20714ff PA |
4321 | "ns2::tmpl<int>::foo2", |
4322 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4323 | |
e1ef7d7a PA |
4324 | /* These are used to check that the increment-last-char in the |
4325 | matching algorithm for completion doesn't match "t1_fund" when | |
4326 | completing "t1_func". */ | |
4327 | "t1_func", | |
4328 | "t1_func1", | |
4329 | "t1_fund", | |
4330 | "t1_fund1", | |
4331 | ||
4332 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4333 | cp-name-parser understands this as a single identifier ("função" | |
4334 | is "function" in PT). */ | |
4335 | u8"u8função", | |
4336 | ||
4337 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4338 | "yfunc\377", | |
4339 | ||
4340 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4341 | "\377", | |
4342 | "\377\377123", | |
4343 | ||
c62446b1 PA |
4344 | /* A name with all sorts of complications. Starts with "z" to make |
4345 | it easier for the completion tests below. */ | |
4346 | #define Z_SYM_NAME \ | |
4347 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4348 | "::tuple<(anonymous namespace)::ui*, " \ | |
4349 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4350 | ||
4351 | Z_SYM_NAME | |
4352 | }; | |
4353 | ||
a3c5fafd PA |
4354 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4355 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4356 | in completion mode. */ | |
5c58de74 PA |
4357 | |
4358 | static bool | |
a3c5fafd | 4359 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 | 4360 | const char *search_name, |
fcf23d5b SM |
4361 | gdb::array_view<const char *> expected_syms, |
4362 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4363 | { |
4364 | lookup_name_info lookup_name (search_name, | |
4365 | symbol_name_match_type::FULL, true); | |
4366 | ||
3b00ef10 | 4367 | auto bounds = index.find_name_components_bounds (lookup_name, |
fcf23d5b SM |
4368 | language_cplus, |
4369 | per_objfile); | |
5c58de74 PA |
4370 | |
4371 | size_t distance = std::distance (bounds.first, bounds.second); | |
4372 | if (distance != expected_syms.size ()) | |
4373 | return false; | |
4374 | ||
4375 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4376 | { | |
4377 | auto nc_elem = bounds.first + exp_elem; | |
fcf23d5b | 4378 | const char *qualified = index.symbol_name_at (nc_elem->idx, per_objfile); |
5c58de74 PA |
4379 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) |
4380 | return false; | |
4381 | } | |
4382 | ||
4383 | return true; | |
4384 | } | |
4385 | ||
4386 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4387 | method. */ | |
4388 | ||
c62446b1 | 4389 | static void |
5c58de74 PA |
4390 | test_mapped_index_find_name_component_bounds () |
4391 | { | |
4392 | mock_mapped_index mock_index (test_symbols); | |
4393 | ||
fcf23d5b | 4394 | mock_index.build_name_components (NULL /* per_objfile */); |
5c58de74 PA |
4395 | |
4396 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4397 | method in completion mode. */ | |
4398 | { | |
4399 | static const char *expected_syms[] = { | |
4400 | "t1_func", | |
4401 | "t1_func1", | |
5c58de74 PA |
4402 | }; |
4403 | ||
fcf23d5b SM |
4404 | SELF_CHECK (check_find_bounds_finds |
4405 | (mock_index, "t1_func", expected_syms, | |
4406 | NULL /* per_objfile */)); | |
5c58de74 PA |
4407 | } |
4408 | ||
4409 | /* Check that the increment-last-char in the name matching algorithm | |
4410 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4411 | { | |
4412 | static const char *expected_syms1[] = { | |
4413 | "\377", | |
4414 | "\377\377123", | |
4415 | }; | |
fcf23d5b SM |
4416 | SELF_CHECK (check_find_bounds_finds |
4417 | (mock_index, "\377", expected_syms1, NULL /* per_objfile */)); | |
5c58de74 PA |
4418 | |
4419 | static const char *expected_syms2[] = { | |
4420 | "\377\377123", | |
4421 | }; | |
fcf23d5b SM |
4422 | SELF_CHECK (check_find_bounds_finds |
4423 | (mock_index, "\377\377", expected_syms2, | |
4424 | NULL /* per_objfile */)); | |
5c58de74 PA |
4425 | } |
4426 | } | |
4427 | ||
4428 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4429 | ||
4430 | static void | |
4431 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4432 | { |
4433 | mock_mapped_index mock_index (test_symbols); | |
4434 | ||
4435 | /* We let all tests run until the end even if some fails, for debug | |
4436 | convenience. */ | |
4437 | bool any_mismatch = false; | |
4438 | ||
4439 | /* Create the expected symbols list (an initializer_list). Needed | |
4440 | because lists have commas, and we need to pass them to CHECK, | |
4441 | which is a macro. */ | |
4442 | #define EXPECT(...) { __VA_ARGS__ } | |
4443 | ||
4444 | /* Wrapper for check_match that passes down the current | |
4445 | __FILE__/__LINE__. */ | |
4446 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4447 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4448 | mock_index, \ | |
4449 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
fcf23d5b | 4450 | EXPECTED_LIST, NULL) |
c62446b1 PA |
4451 | |
4452 | /* Identity checks. */ | |
4453 | for (const char *sym : test_symbols) | |
4454 | { | |
4455 | /* Should be able to match all existing symbols. */ | |
4456 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4457 | EXPECT (sym)); | |
4458 | ||
4459 | /* Should be able to match all existing symbols with | |
4460 | parameters. */ | |
4461 | std::string with_params = std::string (sym) + "(int)"; | |
4462 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4463 | EXPECT (sym)); | |
4464 | ||
4465 | /* Should be able to match all existing symbols with | |
4466 | parameters and qualifiers. */ | |
4467 | with_params = std::string (sym) + " ( int ) const"; | |
4468 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4469 | EXPECT (sym)); | |
4470 | ||
4471 | /* This should really find sym, but cp-name-parser.y doesn't | |
4472 | know about lvalue/rvalue qualifiers yet. */ | |
4473 | with_params = std::string (sym) + " ( int ) &&"; | |
4474 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4475 | {}); | |
4476 | } | |
4477 | ||
e1ef7d7a PA |
4478 | /* Check that the name matching algorithm for completion doesn't get |
4479 | confused with Latin1 'ÿ' / 0xff. */ | |
4480 | { | |
4481 | static const char str[] = "\377"; | |
4482 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4483 | EXPECT ("\377", "\377\377123")); | |
4484 | } | |
4485 | ||
4486 | /* Check that the increment-last-char in the matching algorithm for | |
4487 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4488 | { | |
4489 | static const char str[] = "t1_func"; | |
4490 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4491 | EXPECT ("t1_func", "t1_func1")); | |
4492 | } | |
4493 | ||
c62446b1 PA |
4494 | /* Check that completion mode works at each prefix of the expected |
4495 | symbol name. */ | |
4496 | { | |
4497 | static const char str[] = "function(int)"; | |
4498 | size_t len = strlen (str); | |
4499 | std::string lookup; | |
4500 | ||
4501 | for (size_t i = 1; i < len; i++) | |
4502 | { | |
4503 | lookup.assign (str, i); | |
4504 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4505 | EXPECT ("function")); | |
4506 | } | |
4507 | } | |
4508 | ||
4509 | /* While "w" is a prefix of both components, the match function | |
4510 | should still only be called once. */ | |
4511 | { | |
4512 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4513 | EXPECT ("w1::w2")); | |
a20714ff PA |
4514 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4515 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4516 | } |
4517 | ||
4518 | /* Same, with a "complicated" symbol. */ | |
4519 | { | |
4520 | static const char str[] = Z_SYM_NAME; | |
4521 | size_t len = strlen (str); | |
4522 | std::string lookup; | |
4523 | ||
4524 | for (size_t i = 1; i < len; i++) | |
4525 | { | |
4526 | lookup.assign (str, i); | |
4527 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4528 | EXPECT (Z_SYM_NAME)); | |
4529 | } | |
4530 | } | |
4531 | ||
4532 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4533 | { | |
4534 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4535 | {}); | |
4536 | } | |
4537 | ||
4538 | /* A complete symbol with parameters matches any overload, since the | |
4539 | index has no overload info. */ | |
4540 | { | |
4541 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4542 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4543 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4544 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4545 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4546 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4547 | } |
4548 | ||
4549 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4550 | template argument list. */ | |
4551 | { | |
4552 | static const char expected[] = "ns::foo<int>"; | |
4553 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4554 | EXPECT (expected)); | |
a20714ff PA |
4555 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4556 | EXPECT (expected)); | |
c62446b1 PA |
4557 | } |
4558 | ||
4559 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4560 | template argument list that includes a pointer. */ | |
4561 | { | |
4562 | static const char expected[] = "ns::foo<char*>"; | |
4563 | /* Try both completion and non-completion modes. */ | |
4564 | static const bool completion_mode[2] = {false, true}; | |
4565 | for (size_t i = 0; i < 2; i++) | |
4566 | { | |
4567 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4568 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4569 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4570 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4571 | |
4572 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4573 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4574 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4575 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4576 | } |
4577 | } | |
4578 | ||
4579 | { | |
4580 | /* Check method qualifiers are ignored. */ | |
4581 | static const char expected[] = "ns::foo<char*>"; | |
4582 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4583 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4584 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4585 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4586 | CHECK_MATCH ("foo < char * > ( int ) const", |
4587 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4588 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4589 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4590 | } |
4591 | ||
4592 | /* Test lookup names that don't match anything. */ | |
4593 | { | |
a20714ff PA |
4594 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4595 | {}); | |
4596 | ||
c62446b1 PA |
4597 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4598 | {}); | |
4599 | } | |
4600 | ||
a20714ff PA |
4601 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4602 | which should not be confused with a parameter list. */ | |
4603 | { | |
4604 | static const char *syms[] = { | |
4605 | "A::B::C", | |
4606 | "B::C", | |
4607 | "C", | |
4608 | "A :: B :: C ( int )", | |
4609 | "B :: C ( int )", | |
4610 | "C ( int )", | |
4611 | }; | |
4612 | ||
4613 | for (const char *s : syms) | |
4614 | { | |
4615 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4616 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4617 | } | |
4618 | } | |
4619 | ||
4620 | { | |
4621 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4622 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4623 | EXPECT (expected)); | |
4624 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4625 | EXPECT (expected)); | |
4626 | } | |
4627 | ||
c62446b1 PA |
4628 | SELF_CHECK (!any_mismatch); |
4629 | ||
4630 | #undef EXPECT | |
4631 | #undef CHECK_MATCH | |
4632 | } | |
4633 | ||
5c58de74 PA |
4634 | static void |
4635 | run_test () | |
4636 | { | |
4637 | test_mapped_index_find_name_component_bounds (); | |
4638 | test_dw2_expand_symtabs_matching_symbol (); | |
4639 | } | |
4640 | ||
c62446b1 PA |
4641 | }} // namespace selftests::dw2_expand_symtabs_matching |
4642 | ||
4643 | #endif /* GDB_SELF_TEST */ | |
4644 | ||
4b514bc8 JK |
4645 | /* If FILE_MATCHER is NULL or if PER_CU has |
4646 | dwarf2_per_cu_quick_data::MARK set (see | |
4647 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4648 | EXPANSION_NOTIFY on it. */ | |
4649 | ||
4650 | static void | |
4651 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
4652 | (dwarf2_per_cu_data *per_cu, |
4653 | dwarf2_per_objfile *per_objfile, | |
4b514bc8 JK |
4654 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4655 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4656 | { | |
4657 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4658 | { | |
af758d11 | 4659 | bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); |
4b514bc8 | 4660 | |
97a1449a SM |
4661 | compunit_symtab *symtab |
4662 | = dw2_instantiate_symtab (per_cu, per_objfile, false); | |
af758d11 | 4663 | gdb_assert (symtab != nullptr); |
4b514bc8 | 4664 | |
af758d11 SM |
4665 | if (expansion_notify != NULL && symtab_was_null) |
4666 | expansion_notify (symtab); | |
4b514bc8 JK |
4667 | } |
4668 | } | |
4669 | ||
3f563c84 PA |
4670 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4671 | matched, to expand corresponding CUs that were marked. IDX is the | |
4672 | index of the symbol name that matched. */ | |
4673 | ||
4674 | static void | |
4675 | dw2_expand_marked_cus | |
976ca316 | 4676 | (dwarf2_per_objfile *per_objfile, offset_type idx, |
3f563c84 PA |
4677 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4678 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4679 | search_domain kind) | |
4680 | { | |
3f563c84 PA |
4681 | offset_type *vec, vec_len, vec_idx; |
4682 | bool global_seen = false; | |
976ca316 | 4683 | mapped_index &index = *per_objfile->per_bfd->index_table; |
3f563c84 | 4684 | |
61920122 | 4685 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4686 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4687 | vec_len = MAYBE_SWAP (vec[0]); |
4688 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4689 | { | |
61920122 PA |
4690 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4691 | /* This value is only valid for index versions >= 7. */ | |
4692 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4693 | gdb_index_symbol_kind symbol_kind = | |
4694 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4695 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4696 | /* Only check the symbol attributes if they're present. | |
4697 | Indices prior to version 7 don't record them, | |
4698 | and indices >= 7 may elide them for certain symbols | |
4699 | (gold does this). */ | |
4700 | int attrs_valid = | |
4701 | (index.version >= 7 | |
4702 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4703 | ||
4704 | /* Work around gold/15646. */ | |
f030440d TV |
4705 | if (attrs_valid |
4706 | && !is_static | |
4707 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
9291a0cd | 4708 | { |
f030440d | 4709 | if (global_seen) |
61920122 | 4710 | continue; |
f030440d TV |
4711 | |
4712 | global_seen = true; | |
61920122 | 4713 | } |
3190f0c6 | 4714 | |
61920122 PA |
4715 | /* Only check the symbol's kind if it has one. */ |
4716 | if (attrs_valid) | |
4717 | { | |
4718 | switch (kind) | |
8943b874 | 4719 | { |
61920122 PA |
4720 | case VARIABLES_DOMAIN: |
4721 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4722 | continue; | |
4723 | break; | |
4724 | case FUNCTIONS_DOMAIN: | |
4725 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4726 | continue; |
61920122 PA |
4727 | break; |
4728 | case TYPES_DOMAIN: | |
4729 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4730 | continue; | |
4731 | break; | |
59c35742 AB |
4732 | case MODULES_DOMAIN: |
4733 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4734 | continue; | |
4735 | break; | |
61920122 PA |
4736 | default: |
4737 | break; | |
8943b874 | 4738 | } |
61920122 | 4739 | } |
8943b874 | 4740 | |
61920122 | 4741 | /* Don't crash on bad data. */ |
976ca316 SM |
4742 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
4743 | + per_objfile->per_bfd->all_type_units.size ())) | |
61920122 | 4744 | { |
b98664d3 | 4745 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 4746 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
61920122 PA |
4747 | continue; |
4748 | } | |
4749 | ||
976ca316 SM |
4750 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
4751 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, | |
4b514bc8 | 4752 | expansion_notify); |
61920122 PA |
4753 | } |
4754 | } | |
4755 | ||
4b514bc8 JK |
4756 | /* If FILE_MATCHER is non-NULL, set all the |
4757 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4758 | that match FILE_MATCHER. */ | |
4759 | ||
61920122 | 4760 | static void |
4b514bc8 | 4761 | dw_expand_symtabs_matching_file_matcher |
976ca316 | 4762 | (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 4763 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) |
61920122 | 4764 | { |
4b514bc8 | 4765 | if (file_matcher == NULL) |
61920122 PA |
4766 | return; |
4767 | ||
4b514bc8 JK |
4768 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4769 | htab_eq_pointer, | |
4770 | NULL, xcalloc, xfree)); | |
4771 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4772 | htab_eq_pointer, |
4773 | NULL, xcalloc, xfree)); | |
61920122 | 4774 | |
4b514bc8 JK |
4775 | /* The rule is CUs specify all the files, including those used by |
4776 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4777 | |
976ca316 | 4778 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4779 | { |
927aa2e7 JK |
4780 | QUIT; |
4781 | ||
4782 | per_cu->v.quick->mark = 0; | |
4783 | ||
4784 | /* We only need to look at symtabs not already expanded. */ | |
976ca316 | 4785 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4786 | continue; |
4787 | ||
976ca316 | 4788 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4789 | if (file_data == NULL) |
4790 | continue; | |
4791 | ||
4792 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4793 | continue; | |
4794 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4795 | { | |
4796 | per_cu->v.quick->mark = 1; | |
4797 | continue; | |
4798 | } | |
4799 | ||
b76e467d | 4800 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4801 | { |
4802 | const char *this_real_name; | |
4803 | ||
4804 | if (file_matcher (file_data->file_names[j], false)) | |
4805 | { | |
4806 | per_cu->v.quick->mark = 1; | |
4807 | break; | |
4808 | } | |
4809 | ||
4810 | /* Before we invoke realpath, which can get expensive when many | |
4811 | files are involved, do a quick comparison of the basenames. */ | |
4812 | if (!basenames_may_differ | |
4813 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4814 | true)) | |
4815 | continue; | |
4816 | ||
976ca316 | 4817 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
927aa2e7 JK |
4818 | if (file_matcher (this_real_name, false)) |
4819 | { | |
4820 | per_cu->v.quick->mark = 1; | |
4821 | break; | |
4822 | } | |
4823 | } | |
4824 | ||
b76e467d SM |
4825 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4826 | ? visited_found.get () | |
4827 | : visited_not_found.get (), | |
4828 | file_data, INSERT); | |
927aa2e7 JK |
4829 | *slot = file_data; |
4830 | } | |
4831 | } | |
4832 | ||
4833 | static void | |
4834 | dw2_expand_symtabs_matching | |
4835 | (struct objfile *objfile, | |
4836 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 4837 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
4838 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
4839 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4840 | enum search_domain kind) | |
4841 | { | |
976ca316 | 4842 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 JK |
4843 | |
4844 | /* index_table is NULL if OBJF_READNOW. */ | |
976ca316 | 4845 | if (!per_objfile->per_bfd->index_table) |
927aa2e7 JK |
4846 | return; |
4847 | ||
976ca316 | 4848 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
927aa2e7 | 4849 | |
c1a66c06 TV |
4850 | if (symbol_matcher == NULL && lookup_name == NULL) |
4851 | { | |
976ca316 | 4852 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
4853 | { |
4854 | QUIT; | |
4855 | ||
976ca316 | 4856 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, |
97a1449a | 4857 | file_matcher, expansion_notify); |
c1a66c06 TV |
4858 | } |
4859 | return; | |
4860 | } | |
4861 | ||
976ca316 | 4862 | mapped_index &index = *per_objfile->per_bfd->index_table; |
927aa2e7 | 4863 | |
c1a66c06 | 4864 | dw2_expand_symtabs_matching_symbol (index, *lookup_name, |
927aa2e7 JK |
4865 | symbol_matcher, |
4866 | kind, [&] (offset_type idx) | |
4867 | { | |
976ca316 SM |
4868 | dw2_expand_marked_cus (per_objfile, idx, file_matcher, expansion_notify, |
4869 | kind); | |
3b00ef10 | 4870 | return true; |
976ca316 | 4871 | }, per_objfile); |
927aa2e7 JK |
4872 | } |
4873 | ||
4874 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4875 | symtab. */ | |
4876 | ||
4877 | static struct compunit_symtab * | |
4878 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4879 | CORE_ADDR pc) | |
4880 | { | |
4881 | int i; | |
4882 | ||
4883 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4884 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4885 | return cust; | |
4886 | ||
4887 | if (cust->includes == NULL) | |
4888 | return NULL; | |
4889 | ||
4890 | for (i = 0; cust->includes[i]; ++i) | |
4891 | { | |
4892 | struct compunit_symtab *s = cust->includes[i]; | |
4893 | ||
4894 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4895 | if (s != NULL) | |
4896 | return s; | |
4897 | } | |
4898 | ||
4899 | return NULL; | |
4900 | } | |
4901 | ||
4902 | static struct compunit_symtab * | |
4903 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4904 | struct bound_minimal_symbol msymbol, | |
4905 | CORE_ADDR pc, | |
4906 | struct obj_section *section, | |
4907 | int warn_if_readin) | |
4908 | { | |
4909 | struct dwarf2_per_cu_data *data; | |
4910 | struct compunit_symtab *result; | |
4911 | ||
d320c2b5 | 4912 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4913 | return NULL; |
4914 | ||
b3b3bada | 4915 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
4916 | data = (struct dwarf2_per_cu_data *) addrmap_find |
4917 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
4918 | if (!data) |
4919 | return NULL; | |
4920 | ||
af758d11 SM |
4921 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
4922 | if (warn_if_readin && per_objfile->symtab_set_p (data)) | |
927aa2e7 | 4923 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
08feed99 | 4924 | paddress (objfile->arch (), pc)); |
927aa2e7 | 4925 | |
97a1449a SM |
4926 | result = recursively_find_pc_sect_compunit_symtab |
4927 | (dw2_instantiate_symtab (data, per_objfile, false), pc); | |
4928 | ||
927aa2e7 JK |
4929 | gdb_assert (result != NULL); |
4930 | return result; | |
4931 | } | |
4932 | ||
4933 | static void | |
4934 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
4935 | void *data, int need_fullname) | |
4936 | { | |
976ca316 | 4937 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 | 4938 | |
976ca316 | 4939 | if (!per_objfile->per_bfd->filenames_cache) |
927aa2e7 | 4940 | { |
976ca316 | 4941 | per_objfile->per_bfd->filenames_cache.emplace (); |
927aa2e7 JK |
4942 | |
4943 | htab_up visited (htab_create_alloc (10, | |
4944 | htab_hash_pointer, htab_eq_pointer, | |
4945 | NULL, xcalloc, xfree)); | |
4946 | ||
4947 | /* The rule is CUs specify all the files, including those used | |
4948 | by any TU, so there's no need to scan TUs here. We can | |
4949 | ignore file names coming from already-expanded CUs. */ | |
4950 | ||
976ca316 | 4951 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4952 | { |
976ca316 | 4953 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4954 | { |
4955 | void **slot = htab_find_slot (visited.get (), | |
4956 | per_cu->v.quick->file_names, | |
4957 | INSERT); | |
4958 | ||
4959 | *slot = per_cu->v.quick->file_names; | |
4960 | } | |
4961 | } | |
4962 | ||
976ca316 | 4963 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4964 | { |
927aa2e7 | 4965 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 4966 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4967 | continue; |
4968 | ||
ab432490 | 4969 | quick_file_names *file_data |
976ca316 | 4970 | = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4971 | if (file_data == NULL) |
4972 | continue; | |
4973 | ||
b76e467d | 4974 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4975 | if (*slot) |
4976 | { | |
4977 | /* Already visited. */ | |
4978 | continue; | |
4979 | } | |
4980 | *slot = file_data; | |
4981 | ||
4982 | for (int j = 0; j < file_data->num_file_names; ++j) | |
4983 | { | |
4984 | const char *filename = file_data->file_names[j]; | |
976ca316 | 4985 | per_objfile->per_bfd->filenames_cache->seen (filename); |
927aa2e7 JK |
4986 | } |
4987 | } | |
4988 | } | |
4989 | ||
976ca316 | 4990 | per_objfile->per_bfd->filenames_cache->traverse ([&] (const char *filename) |
927aa2e7 JK |
4991 | { |
4992 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
4993 | ||
4994 | if (need_fullname) | |
4995 | this_real_name = gdb_realpath (filename); | |
4996 | (*fun) (filename, this_real_name.get (), data); | |
4997 | }); | |
4998 | } | |
4999 | ||
5000 | static int | |
5001 | dw2_has_symbols (struct objfile *objfile) | |
5002 | { | |
5003 | return 1; | |
5004 | } | |
5005 | ||
5006 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5007 | { | |
5008 | dw2_has_symbols, | |
5009 | dw2_find_last_source_symtab, | |
5010 | dw2_forget_cached_source_info, | |
5011 | dw2_map_symtabs_matching_filename, | |
5012 | dw2_lookup_symbol, | |
d3214198 | 5013 | NULL, |
927aa2e7 JK |
5014 | dw2_print_stats, |
5015 | dw2_dump, | |
927aa2e7 JK |
5016 | dw2_expand_symtabs_for_function, |
5017 | dw2_expand_all_symtabs, | |
5018 | dw2_expand_symtabs_with_fullname, | |
5019 | dw2_map_matching_symbols, | |
5020 | dw2_expand_symtabs_matching, | |
5021 | dw2_find_pc_sect_compunit_symtab, | |
5022 | NULL, | |
5023 | dw2_map_symbol_filenames | |
5024 | }; | |
5025 | ||
5026 | /* DWARF-5 debug_names reader. */ | |
5027 | ||
5028 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5029 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5030 | ||
5031 | /* A helper function that reads the .debug_names section in SECTION | |
5032 | and fills in MAP. FILENAME is the name of the file containing the | |
5033 | section; it is used for error reporting. | |
5034 | ||
5035 | Returns true if all went well, false otherwise. */ | |
5036 | ||
5037 | static bool | |
5038 | read_debug_names_from_section (struct objfile *objfile, | |
5039 | const char *filename, | |
5040 | struct dwarf2_section_info *section, | |
5041 | mapped_debug_names &map) | |
5042 | { | |
96b79293 | 5043 | if (section->empty ()) |
927aa2e7 JK |
5044 | return false; |
5045 | ||
5046 | /* Older elfutils strip versions could keep the section in the main | |
5047 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5048 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
5049 | return false; |
5050 | ||
96b79293 | 5051 | section->read (objfile); |
927aa2e7 | 5052 | |
08feed99 | 5053 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
5054 | |
5055 | const gdb_byte *addr = section->buffer; | |
5056 | ||
96b79293 | 5057 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
5058 | |
5059 | unsigned int bytes_read; | |
5060 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5061 | addr += bytes_read; | |
5062 | ||
5063 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5064 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5065 | if (bytes_read + length != section->size) | |
5066 | { | |
5067 | /* There may be multiple per-CU indices. */ | |
5068 | warning (_("Section .debug_names in %s length %s does not match " | |
5069 | "section length %s, ignoring .debug_names."), | |
5070 | filename, plongest (bytes_read + length), | |
5071 | pulongest (section->size)); | |
5072 | return false; | |
5073 | } | |
5074 | ||
5075 | /* The version number. */ | |
5076 | uint16_t version = read_2_bytes (abfd, addr); | |
5077 | addr += 2; | |
5078 | if (version != 5) | |
5079 | { | |
5080 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5081 | "ignoring .debug_names."), | |
5082 | filename, version); | |
5083 | return false; | |
5084 | } | |
5085 | ||
5086 | /* Padding. */ | |
5087 | uint16_t padding = read_2_bytes (abfd, addr); | |
5088 | addr += 2; | |
5089 | if (padding != 0) | |
5090 | { | |
5091 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5092 | "ignoring .debug_names."), | |
5093 | filename, padding); | |
5094 | return false; | |
5095 | } | |
5096 | ||
5097 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5098 | map.cu_count = read_4_bytes (abfd, addr); | |
5099 | addr += 4; | |
5100 | ||
5101 | /* local_type_unit_count - The number of TUs in the local TU | |
5102 | list. */ | |
5103 | map.tu_count = read_4_bytes (abfd, addr); | |
5104 | addr += 4; | |
5105 | ||
5106 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5107 | list. */ | |
5108 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5109 | addr += 4; | |
5110 | if (foreign_tu_count != 0) | |
5111 | { | |
5112 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5113 | "ignoring .debug_names."), | |
5114 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5115 | return false; | |
5116 | } | |
5117 | ||
5118 | /* bucket_count - The number of hash buckets in the hash lookup | |
5119 | table. */ | |
5120 | map.bucket_count = read_4_bytes (abfd, addr); | |
5121 | addr += 4; | |
5122 | ||
5123 | /* name_count - The number of unique names in the index. */ | |
5124 | map.name_count = read_4_bytes (abfd, addr); | |
5125 | addr += 4; | |
5126 | ||
5127 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5128 | table. */ | |
5129 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5130 | addr += 4; | |
5131 | ||
5132 | /* augmentation_string_size - The size in bytes of the augmentation | |
5133 | string. This value is rounded up to a multiple of 4. */ | |
5134 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5135 | addr += 4; | |
5136 | map.augmentation_is_gdb = ((augmentation_string_size | |
5137 | == sizeof (dwarf5_augmentation)) | |
5138 | && memcmp (addr, dwarf5_augmentation, | |
5139 | sizeof (dwarf5_augmentation)) == 0); | |
5140 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5141 | addr += augmentation_string_size; | |
5142 | ||
5143 | /* List of CUs */ | |
5144 | map.cu_table_reordered = addr; | |
5145 | addr += map.cu_count * map.offset_size; | |
5146 | ||
5147 | /* List of Local TUs */ | |
5148 | map.tu_table_reordered = addr; | |
5149 | addr += map.tu_count * map.offset_size; | |
5150 | ||
5151 | /* Hash Lookup Table */ | |
5152 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5153 | addr += map.bucket_count * 4; | |
5154 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5155 | addr += map.name_count * 4; | |
5156 | ||
5157 | /* Name Table */ | |
5158 | map.name_table_string_offs_reordered = addr; | |
5159 | addr += map.name_count * map.offset_size; | |
5160 | map.name_table_entry_offs_reordered = addr; | |
5161 | addr += map.name_count * map.offset_size; | |
5162 | ||
5163 | const gdb_byte *abbrev_table_start = addr; | |
5164 | for (;;) | |
5165 | { | |
927aa2e7 JK |
5166 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5167 | addr += bytes_read; | |
5168 | if (index_num == 0) | |
5169 | break; | |
5170 | ||
5171 | const auto insertpair | |
5172 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5173 | if (!insertpair.second) | |
5174 | { | |
5175 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5176 | "ignoring .debug_names."), | |
5177 | filename, pulongest (index_num)); | |
5178 | return false; | |
5179 | } | |
5180 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5181 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5182 | addr += bytes_read; | |
5183 | ||
5184 | for (;;) | |
5185 | { | |
5186 | mapped_debug_names::index_val::attr attr; | |
5187 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5188 | addr += bytes_read; | |
5189 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5190 | addr += bytes_read; | |
5191 | if (attr.form == DW_FORM_implicit_const) | |
5192 | { | |
5193 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5194 | &bytes_read); | |
5195 | addr += bytes_read; | |
5196 | } | |
5197 | if (attr.dw_idx == 0 && attr.form == 0) | |
5198 | break; | |
5199 | indexval.attr_vec.push_back (std::move (attr)); | |
5200 | } | |
5201 | } | |
5202 | if (addr != abbrev_table_start + abbrev_table_size) | |
5203 | { | |
5204 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5205 | "of size %s vs. written as %u, ignoring .debug_names."), |
5206 | filename, plongest (addr - abbrev_table_start), | |
5207 | abbrev_table_size); | |
927aa2e7 JK |
5208 | return false; |
5209 | } | |
5210 | map.entry_pool = addr; | |
5211 | ||
5212 | return true; | |
5213 | } | |
5214 | ||
5215 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5216 | list. */ | |
5217 | ||
5218 | static void | |
168c9250 | 5219 | create_cus_from_debug_names_list (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5220 | const mapped_debug_names &map, |
5221 | dwarf2_section_info §ion, | |
b76e467d | 5222 | bool is_dwz) |
927aa2e7 | 5223 | { |
3ee6bb11 TV |
5224 | if (!map.augmentation_is_gdb) |
5225 | { | |
5226 | for (uint32_t i = 0; i < map.cu_count; ++i) | |
5227 | { | |
5228 | sect_offset sect_off | |
5229 | = (sect_offset) (extract_unsigned_integer | |
5230 | (map.cu_table_reordered + i * map.offset_size, | |
5231 | map.offset_size, | |
5232 | map.dwarf5_byte_order)); | |
5233 | /* We don't know the length of the CU, because the CU list in a | |
5234 | .debug_names index can be incomplete, so we can't use the start of | |
5235 | the next CU as end of this CU. We create the CUs here with length 0, | |
5236 | and in cutu_reader::cutu_reader we'll fill in the actual length. */ | |
5237 | dwarf2_per_cu_data *per_cu | |
168c9250 SM |
5238 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, sect_off, 0); |
5239 | per_bfd->all_comp_units.push_back (per_cu); | |
3ee6bb11 TV |
5240 | } |
5241 | } | |
5242 | ||
927aa2e7 JK |
5243 | sect_offset sect_off_prev; |
5244 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5245 | { | |
5246 | sect_offset sect_off_next; | |
5247 | if (i < map.cu_count) | |
5248 | { | |
5249 | sect_off_next | |
5250 | = (sect_offset) (extract_unsigned_integer | |
5251 | (map.cu_table_reordered + i * map.offset_size, | |
5252 | map.offset_size, | |
5253 | map.dwarf5_byte_order)); | |
5254 | } | |
5255 | else | |
5256 | sect_off_next = (sect_offset) section.size; | |
5257 | if (i >= 1) | |
5258 | { | |
5259 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5260 | dwarf2_per_cu_data *per_cu |
168c9250 | 5261 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
927aa2e7 | 5262 | sect_off_prev, length); |
168c9250 | 5263 | per_bfd->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5264 | } |
5265 | sect_off_prev = sect_off_next; | |
5266 | } | |
5267 | } | |
5268 | ||
5269 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5270 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5271 | |
5272 | static void | |
168c9250 | 5273 | create_cus_from_debug_names (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5274 | const mapped_debug_names &map, |
5275 | const mapped_debug_names &dwz_map) | |
5276 | { | |
168c9250 SM |
5277 | gdb_assert (per_bfd->all_comp_units.empty ()); |
5278 | per_bfd->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5279 | |
168c9250 | 5280 | create_cus_from_debug_names_list (per_bfd, map, per_bfd->info, |
b76e467d | 5281 | false /* is_dwz */); |
927aa2e7 JK |
5282 | |
5283 | if (dwz_map.cu_count == 0) | |
5284 | return; | |
5285 | ||
168c9250 SM |
5286 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
5287 | create_cus_from_debug_names_list (per_bfd, dwz_map, dwz->info, | |
b76e467d | 5288 | true /* is_dwz */); |
927aa2e7 JK |
5289 | } |
5290 | ||
5291 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5292 | elements of all the CUs and return true. Otherwise, return false. */ | |
5293 | ||
5294 | static bool | |
976ca316 | 5295 | dwarf2_read_debug_names (dwarf2_per_objfile *per_objfile) |
927aa2e7 | 5296 | { |
fcf23d5b SM |
5297 | std::unique_ptr<mapped_debug_names> map (new mapped_debug_names); |
5298 | mapped_debug_names dwz_map; | |
976ca316 | 5299 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 5300 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
927aa2e7 JK |
5301 | |
5302 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
976ca316 | 5303 | &per_objfile->per_bfd->debug_names, *map)) |
927aa2e7 JK |
5304 | return false; |
5305 | ||
5306 | /* Don't use the index if it's empty. */ | |
22ca247e | 5307 | if (map->name_count == 0) |
927aa2e7 JK |
5308 | return false; |
5309 | ||
5310 | /* If there is a .dwz file, read it so we can get its CU list as | |
5311 | well. */ | |
f8c41851 | 5312 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
927aa2e7 JK |
5313 | if (dwz != NULL) |
5314 | { | |
5315 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5316 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5317 | &dwz->debug_names, dwz_map)) |
5318 | { | |
5319 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5320 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5321 | return false; |
5322 | } | |
5323 | } | |
5324 | ||
f8c41851 | 5325 | create_cus_from_debug_names (per_bfd, *map, dwz_map); |
927aa2e7 | 5326 | |
22ca247e | 5327 | if (map->tu_count != 0) |
927aa2e7 JK |
5328 | { |
5329 | /* We can only handle a single .debug_types when we have an | |
5330 | index. */ | |
f8c41851 | 5331 | if (per_bfd->types.size () != 1) |
927aa2e7 JK |
5332 | return false; |
5333 | ||
f8c41851 | 5334 | dwarf2_section_info *section = &per_bfd->types[0]; |
927aa2e7 JK |
5335 | |
5336 | create_signatured_type_table_from_debug_names | |
f8c41851 | 5337 | (per_objfile, *map, section, &per_bfd->abbrev); |
927aa2e7 JK |
5338 | } |
5339 | ||
f8c41851 | 5340 | create_addrmap_from_aranges (per_objfile, &per_bfd->debug_aranges); |
927aa2e7 | 5341 | |
f8c41851 SM |
5342 | per_bfd->debug_names_table = std::move (map); |
5343 | per_bfd->using_index = 1; | |
5344 | per_bfd->quick_file_names_table = | |
976ca316 | 5345 | create_quick_file_names_table (per_objfile->per_bfd->all_comp_units.size ()); |
927aa2e7 | 5346 | |
f8c41851 SM |
5347 | /* Save partial symtabs in the per_bfd object, for the benefit of subsequent |
5348 | objfiles using the same BFD. */ | |
5349 | gdb_assert (per_bfd->partial_symtabs == nullptr); | |
5350 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
5351 | ||
927aa2e7 JK |
5352 | return true; |
5353 | } | |
5354 | ||
927aa2e7 JK |
5355 | /* Type used to manage iterating over all CUs looking for a symbol for |
5356 | .debug_names. */ | |
5357 | ||
5358 | class dw2_debug_names_iterator | |
5359 | { | |
5360 | public: | |
927aa2e7 | 5361 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5362 | gdb::optional<block_enum> block_index, |
5363 | domain_enum domain, | |
fcf23d5b | 5364 | const char *name, dwarf2_per_objfile *per_objfile) |
2b79f376 | 5365 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5366 | m_addr (find_vec_in_debug_names (map, name, per_objfile)), |
5367 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5368 | {} |
5369 | ||
5370 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
fcf23d5b | 5371 | search_domain search, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5372 | : m_map (map), |
5373 | m_search (search), | |
fcf23d5b SM |
5374 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5375 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5376 | {} |
5377 | ||
3b00ef10 TT |
5378 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5379 | block_enum block_index, domain_enum domain, | |
fcf23d5b | 5380 | uint32_t namei, dwarf2_per_objfile *per_objfile) |
3b00ef10 | 5381 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5382 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5383 | m_per_objfile (per_objfile) | |
3b00ef10 TT |
5384 | {} |
5385 | ||
927aa2e7 JK |
5386 | /* Return the next matching CU or NULL if there are no more. */ |
5387 | dwarf2_per_cu_data *next (); | |
5388 | ||
5389 | private: | |
5390 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
976ca316 SM |
5391 | const char *name, |
5392 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 | 5393 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, |
976ca316 SM |
5394 | uint32_t namei, |
5395 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 JK |
5396 | |
5397 | /* The internalized form of .debug_names. */ | |
5398 | const mapped_debug_names &m_map; | |
5399 | ||
2b79f376 SM |
5400 | /* If set, only look for symbols that match that block. Valid values are |
5401 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5402 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5403 | |
5404 | /* The kind of symbol we're looking for. */ | |
5405 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5406 | const search_domain m_search = ALL_DOMAIN; | |
5407 | ||
5408 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5409 | not found. */ | |
5410 | const gdb_byte *m_addr; | |
fcf23d5b SM |
5411 | |
5412 | dwarf2_per_objfile *m_per_objfile; | |
927aa2e7 JK |
5413 | }; |
5414 | ||
5415 | const char * | |
fcf23d5b | 5416 | mapped_debug_names::namei_to_name |
976ca316 | 5417 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const |
927aa2e7 JK |
5418 | { |
5419 | const ULONGEST namei_string_offs | |
5420 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5421 | + namei * offset_size), | |
5422 | offset_size, | |
5423 | dwarf5_byte_order); | |
976ca316 | 5424 | return read_indirect_string_at_offset (per_objfile, namei_string_offs); |
927aa2e7 JK |
5425 | } |
5426 | ||
5427 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5428 | found, return pointer to its pool data. If NAME cannot be found, | |
5429 | return NULL. */ | |
5430 | ||
5431 | const gdb_byte * | |
5432 | dw2_debug_names_iterator::find_vec_in_debug_names | |
976ca316 SM |
5433 | (const mapped_debug_names &map, const char *name, |
5434 | dwarf2_per_objfile *per_objfile) | |
927aa2e7 JK |
5435 | { |
5436 | int (*cmp) (const char *, const char *); | |
5437 | ||
54ee4252 | 5438 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5439 | if (current_language->la_language == language_cplus |
5440 | || current_language->la_language == language_fortran | |
5441 | || current_language->la_language == language_d) | |
5442 | { | |
5443 | /* NAME is already canonical. Drop any qualifiers as | |
5444 | .debug_names does not contain any. */ | |
5445 | ||
5446 | if (strchr (name, '(') != NULL) | |
5447 | { | |
54ee4252 | 5448 | without_params = cp_remove_params (name); |
927aa2e7 | 5449 | if (without_params != NULL) |
54ee4252 | 5450 | name = without_params.get (); |
927aa2e7 JK |
5451 | } |
5452 | } | |
5453 | ||
5454 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5455 | ||
5456 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5457 | uint32_t namei | |
5458 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5459 | (map.bucket_table_reordered | |
5460 | + (full_hash % map.bucket_count)), 4, | |
5461 | map.dwarf5_byte_order); | |
5462 | if (namei == 0) | |
5463 | return NULL; | |
5464 | --namei; | |
5465 | if (namei >= map.name_count) | |
5466 | { | |
b98664d3 | 5467 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5468 | "[in module %s]"), |
5469 | namei, map.name_count, | |
fcf23d5b | 5470 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5471 | return NULL; |
5472 | } | |
5473 | ||
5474 | for (;;) | |
5475 | { | |
5476 | const uint32_t namei_full_hash | |
5477 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5478 | (map.hash_table_reordered + namei), 4, | |
5479 | map.dwarf5_byte_order); | |
5480 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5481 | return NULL; | |
5482 | ||
5483 | if (full_hash == namei_full_hash) | |
5484 | { | |
fcf23d5b | 5485 | const char *const namei_string = map.namei_to_name (namei, per_objfile); |
927aa2e7 JK |
5486 | |
5487 | #if 0 /* An expensive sanity check. */ | |
5488 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5489 | { | |
b98664d3 | 5490 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5491 | "[in module %s]"), |
5492 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5493 | return NULL; | |
5494 | } | |
5495 | #endif | |
5496 | ||
5497 | if (cmp (namei_string, name) == 0) | |
5498 | { | |
5499 | const ULONGEST namei_entry_offs | |
5500 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5501 | + namei * map.offset_size), | |
5502 | map.offset_size, map.dwarf5_byte_order); | |
5503 | return map.entry_pool + namei_entry_offs; | |
5504 | } | |
5505 | } | |
5506 | ||
5507 | ++namei; | |
5508 | if (namei >= map.name_count) | |
5509 | return NULL; | |
5510 | } | |
5511 | } | |
5512 | ||
5513 | const gdb_byte * | |
5514 | dw2_debug_names_iterator::find_vec_in_debug_names | |
fcf23d5b | 5515 | (const mapped_debug_names &map, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5516 | { |
5517 | if (namei >= map.name_count) | |
5518 | { | |
b98664d3 | 5519 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5520 | "[in module %s]"), |
5521 | namei, map.name_count, | |
fcf23d5b | 5522 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5523 | return NULL; |
5524 | } | |
5525 | ||
5526 | const ULONGEST namei_entry_offs | |
5527 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5528 | + namei * map.offset_size), | |
5529 | map.offset_size, map.dwarf5_byte_order); | |
5530 | return map.entry_pool + namei_entry_offs; | |
5531 | } | |
5532 | ||
5533 | /* See dw2_debug_names_iterator. */ | |
5534 | ||
5535 | dwarf2_per_cu_data * | |
5536 | dw2_debug_names_iterator::next () | |
5537 | { | |
5538 | if (m_addr == NULL) | |
5539 | return NULL; | |
5540 | ||
fcf23d5b SM |
5541 | dwarf2_per_bfd *per_bfd = m_per_objfile->per_bfd; |
5542 | struct objfile *objfile = m_per_objfile->objfile; | |
ed2dc618 | 5543 | bfd *const abfd = objfile->obfd; |
927aa2e7 JK |
5544 | |
5545 | again: | |
5546 | ||
5547 | unsigned int bytes_read; | |
5548 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5549 | m_addr += bytes_read; | |
5550 | if (abbrev == 0) | |
5551 | return NULL; | |
5552 | ||
5553 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5554 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5555 | { | |
b98664d3 | 5556 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5557 | "[in module %s]"), |
ed2dc618 | 5558 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5559 | return NULL; |
5560 | } | |
5561 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5562 | enum class symbol_linkage { |
5563 | unknown, | |
5564 | static_, | |
5565 | extern_, | |
23c13d42 | 5566 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5567 | dwarf2_per_cu_data *per_cu = NULL; |
5568 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5569 | { | |
5570 | ULONGEST ull; | |
5571 | switch (attr.form) | |
5572 | { | |
5573 | case DW_FORM_implicit_const: | |
5574 | ull = attr.implicit_const; | |
5575 | break; | |
5576 | case DW_FORM_flag_present: | |
5577 | ull = 1; | |
5578 | break; | |
5579 | case DW_FORM_udata: | |
5580 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5581 | m_addr += bytes_read; | |
5582 | break; | |
6dc55ce9 | 5583 | case DW_FORM_ref4: |
5584 | ull = read_4_bytes (abfd, m_addr); | |
5585 | m_addr += 4; | |
5586 | break; | |
5587 | case DW_FORM_ref8: | |
5588 | ull = read_8_bytes (abfd, m_addr); | |
5589 | m_addr += 8; | |
5590 | break; | |
5591 | case DW_FORM_ref_sig8: | |
5592 | ull = read_8_bytes (abfd, m_addr); | |
5593 | m_addr += 8; | |
5594 | break; | |
927aa2e7 | 5595 | default: |
b98664d3 | 5596 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5597 | dwarf_form_name (attr.form), |
ed2dc618 | 5598 | objfile_name (objfile)); |
927aa2e7 JK |
5599 | return NULL; |
5600 | } | |
5601 | switch (attr.dw_idx) | |
5602 | { | |
5603 | case DW_IDX_compile_unit: | |
5604 | /* Don't crash on bad data. */ | |
fcf23d5b | 5605 | if (ull >= m_per_objfile->per_bfd->all_comp_units.size ()) |
927aa2e7 | 5606 | { |
b98664d3 | 5607 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5608 | " [in module %s]"), |
5609 | pulongest (ull), | |
fcf23d5b | 5610 | objfile_name (objfile)); |
927aa2e7 JK |
5611 | continue; |
5612 | } | |
fcf23d5b | 5613 | per_cu = per_bfd->get_cutu (ull); |
927aa2e7 | 5614 | break; |
8af5c486 JK |
5615 | case DW_IDX_type_unit: |
5616 | /* Don't crash on bad data. */ | |
fcf23d5b | 5617 | if (ull >= per_bfd->all_type_units.size ()) |
8af5c486 | 5618 | { |
b98664d3 | 5619 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5620 | " [in module %s]"), |
5621 | pulongest (ull), | |
fcf23d5b | 5622 | objfile_name (objfile)); |
8af5c486 JK |
5623 | continue; |
5624 | } | |
fcf23d5b | 5625 | per_cu = &per_bfd->get_tu (ull)->per_cu; |
8af5c486 | 5626 | break; |
6dc55ce9 | 5627 | case DW_IDX_die_offset: |
5628 | /* In a per-CU index (as opposed to a per-module index), index | |
5629 | entries without CU attribute implicitly refer to the single CU. */ | |
5630 | if (per_cu == NULL) | |
fcf23d5b | 5631 | per_cu = per_bfd->get_cu (0); |
6dc55ce9 | 5632 | break; |
927aa2e7 JK |
5633 | case DW_IDX_GNU_internal: |
5634 | if (!m_map.augmentation_is_gdb) | |
5635 | break; | |
23c13d42 | 5636 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5637 | break; |
5638 | case DW_IDX_GNU_external: | |
5639 | if (!m_map.augmentation_is_gdb) | |
5640 | break; | |
23c13d42 | 5641 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5642 | break; |
5643 | } | |
5644 | } | |
5645 | ||
5646 | /* Skip if already read in. */ | |
fcf23d5b | 5647 | if (m_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5648 | goto again; |
5649 | ||
5650 | /* Check static vs global. */ | |
23c13d42 | 5651 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5652 | { |
2b79f376 | 5653 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5654 | const bool symbol_is_static = |
5655 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5656 | if (want_static != symbol_is_static) |
2b79f376 | 5657 | goto again; |
927aa2e7 JK |
5658 | } |
5659 | ||
5660 | /* Match dw2_symtab_iter_next, symbol_kind | |
5661 | and debug_names::psymbol_tag. */ | |
5662 | switch (m_domain) | |
5663 | { | |
5664 | case VAR_DOMAIN: | |
5665 | switch (indexval.dwarf_tag) | |
5666 | { | |
5667 | case DW_TAG_variable: | |
5668 | case DW_TAG_subprogram: | |
5669 | /* Some types are also in VAR_DOMAIN. */ | |
5670 | case DW_TAG_typedef: | |
5671 | case DW_TAG_structure_type: | |
5672 | break; | |
5673 | default: | |
5674 | goto again; | |
5675 | } | |
5676 | break; | |
5677 | case STRUCT_DOMAIN: | |
5678 | switch (indexval.dwarf_tag) | |
5679 | { | |
5680 | case DW_TAG_typedef: | |
5681 | case DW_TAG_structure_type: | |
5682 | break; | |
5683 | default: | |
5684 | goto again; | |
5685 | } | |
5686 | break; | |
5687 | case LABEL_DOMAIN: | |
5688 | switch (indexval.dwarf_tag) | |
5689 | { | |
5690 | case 0: | |
5691 | case DW_TAG_variable: | |
5692 | break; | |
5693 | default: | |
5694 | goto again; | |
5695 | } | |
5696 | break; | |
59c35742 AB |
5697 | case MODULE_DOMAIN: |
5698 | switch (indexval.dwarf_tag) | |
5699 | { | |
5700 | case DW_TAG_module: | |
5701 | break; | |
5702 | default: | |
5703 | goto again; | |
5704 | } | |
5705 | break; | |
927aa2e7 JK |
5706 | default: |
5707 | break; | |
5708 | } | |
5709 | ||
5710 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5711 | debug_names::psymbol_tag. */ | |
5712 | switch (m_search) | |
4b514bc8 | 5713 | { |
927aa2e7 JK |
5714 | case VARIABLES_DOMAIN: |
5715 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5716 | { |
927aa2e7 JK |
5717 | case DW_TAG_variable: |
5718 | break; | |
5719 | default: | |
5720 | goto again; | |
4b514bc8 | 5721 | } |
927aa2e7 JK |
5722 | break; |
5723 | case FUNCTIONS_DOMAIN: | |
5724 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5725 | { |
927aa2e7 JK |
5726 | case DW_TAG_subprogram: |
5727 | break; | |
5728 | default: | |
5729 | goto again; | |
4b514bc8 | 5730 | } |
927aa2e7 JK |
5731 | break; |
5732 | case TYPES_DOMAIN: | |
5733 | switch (indexval.dwarf_tag) | |
5734 | { | |
5735 | case DW_TAG_typedef: | |
5736 | case DW_TAG_structure_type: | |
5737 | break; | |
5738 | default: | |
5739 | goto again; | |
5740 | } | |
5741 | break; | |
59c35742 AB |
5742 | case MODULES_DOMAIN: |
5743 | switch (indexval.dwarf_tag) | |
5744 | { | |
5745 | case DW_TAG_module: | |
5746 | break; | |
5747 | default: | |
5748 | goto again; | |
5749 | } | |
927aa2e7 JK |
5750 | default: |
5751 | break; | |
4b514bc8 | 5752 | } |
927aa2e7 JK |
5753 | |
5754 | return per_cu; | |
4b514bc8 | 5755 | } |
61920122 | 5756 | |
927aa2e7 | 5757 | static struct compunit_symtab * |
c7f839cb | 5758 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5759 | const char *name, domain_enum domain) |
4b514bc8 | 5760 | { |
976ca316 | 5761 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
61920122 | 5762 | |
976ca316 | 5763 | const auto &mapp = per_objfile->per_bfd->debug_names_table; |
927aa2e7 | 5764 | if (!mapp) |
61920122 | 5765 | { |
927aa2e7 JK |
5766 | /* index is NULL if OBJF_READNOW. */ |
5767 | return NULL; | |
5768 | } | |
5769 | const auto &map = *mapp; | |
9291a0cd | 5770 | |
976ca316 | 5771 | dw2_debug_names_iterator iter (map, block_index, domain, name, per_objfile); |
9703b513 | 5772 | |
927aa2e7 JK |
5773 | struct compunit_symtab *stab_best = NULL; |
5774 | struct dwarf2_per_cu_data *per_cu; | |
5775 | while ((per_cu = iter.next ()) != NULL) | |
5776 | { | |
5777 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 5778 | compunit_symtab *stab |
976ca316 | 5779 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 | 5780 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5781 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5782 | |
927aa2e7 JK |
5783 | sym = block_find_symbol (block, name, domain, |
5784 | block_find_non_opaque_type_preferred, | |
5785 | &with_opaque); | |
9703b513 | 5786 | |
927aa2e7 JK |
5787 | /* Some caution must be observed with overloaded functions and |
5788 | methods, since the index will not contain any overload | |
5789 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5790 | |
927aa2e7 | 5791 | if (sym != NULL |
987012b8 | 5792 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5793 | return stab; |
5794 | if (with_opaque != NULL | |
987012b8 | 5795 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5796 | stab_best = stab; |
9703b513 | 5797 | |
927aa2e7 | 5798 | /* Keep looking through other CUs. */ |
9703b513 TT |
5799 | } |
5800 | ||
927aa2e7 | 5801 | return stab_best; |
9703b513 TT |
5802 | } |
5803 | ||
927aa2e7 JK |
5804 | /* This dumps minimal information about .debug_names. It is called |
5805 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5806 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5807 | |
927aa2e7 JK |
5808 | static void |
5809 | dw2_debug_names_dump (struct objfile *objfile) | |
5810 | { | |
976ca316 | 5811 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 5812 | |
976ca316 | 5813 | gdb_assert (per_objfile->per_bfd->using_index); |
927aa2e7 | 5814 | printf_filtered (".debug_names:"); |
976ca316 | 5815 | if (per_objfile->per_bfd->debug_names_table) |
927aa2e7 JK |
5816 | printf_filtered (" exists\n"); |
5817 | else | |
5818 | printf_filtered (" faked for \"readnow\"\n"); | |
5819 | printf_filtered ("\n"); | |
9291a0cd TT |
5820 | } |
5821 | ||
9291a0cd | 5822 | static void |
927aa2e7 JK |
5823 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5824 | const char *func_name) | |
9291a0cd | 5825 | { |
976ca316 | 5826 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 5827 | |
976ca316 SM |
5828 | /* per_objfile->per_bfd->debug_names_table is NULL if OBJF_READNOW. */ |
5829 | if (per_objfile->per_bfd->debug_names_table) | |
24c79950 | 5830 | { |
976ca316 | 5831 | const mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
24c79950 | 5832 | |
fcf23d5b | 5833 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name, |
976ca316 | 5834 | per_objfile); |
24c79950 | 5835 | |
927aa2e7 JK |
5836 | struct dwarf2_per_cu_data *per_cu; |
5837 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5838 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 JK |
5839 | } |
5840 | } | |
24c79950 | 5841 | |
3b00ef10 TT |
5842 | static void |
5843 | dw2_debug_names_map_matching_symbols | |
5844 | (struct objfile *objfile, | |
5845 | const lookup_name_info &name, domain_enum domain, | |
5846 | int global, | |
5847 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5848 | symbol_compare_ftype *ordered_compare) | |
5849 | { | |
976ca316 | 5850 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3b00ef10 TT |
5851 | |
5852 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
976ca316 | 5853 | if (!per_objfile->per_bfd->debug_names_table) |
3b00ef10 TT |
5854 | return; |
5855 | ||
976ca316 | 5856 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
3b00ef10 TT |
5857 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
5858 | ||
5859 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5860 | auto matcher = [&] (const char *symname) | |
5861 | { | |
5862 | if (ordered_compare == nullptr) | |
5863 | return true; | |
5864 | return ordered_compare (symname, match_name) == 0; | |
5865 | }; | |
5866 | ||
5867 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5868 | [&] (offset_type namei) | |
5869 | { | |
5870 | /* The name was matched, now expand corresponding CUs that were | |
5871 | marked. */ | |
fcf23d5b | 5872 | dw2_debug_names_iterator iter (map, block_kind, domain, namei, |
976ca316 | 5873 | per_objfile); |
3b00ef10 TT |
5874 | |
5875 | struct dwarf2_per_cu_data *per_cu; | |
5876 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5877 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 5878 | nullptr); |
3b00ef10 | 5879 | return true; |
976ca316 | 5880 | }, per_objfile); |
3b00ef10 TT |
5881 | |
5882 | /* It's a shame we couldn't do this inside the | |
5883 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5884 | that have already been expanded. Instead, this loop matches what | |
5885 | the psymtab code does. */ | |
976ca316 | 5886 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3b00ef10 | 5887 | { |
976ca316 | 5888 | compunit_symtab *symtab = per_objfile->get_symtab (per_cu); |
af758d11 | 5889 | if (symtab != nullptr) |
3b00ef10 TT |
5890 | { |
5891 | const struct block *block | |
af758d11 | 5892 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (symtab), block_kind); |
3b00ef10 TT |
5893 | if (!iterate_over_symbols_terminated (block, name, |
5894 | domain, callback)) | |
5895 | break; | |
5896 | } | |
5897 | } | |
5898 | } | |
5899 | ||
927aa2e7 JK |
5900 | static void |
5901 | dw2_debug_names_expand_symtabs_matching | |
5902 | (struct objfile *objfile, | |
5903 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 5904 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
5905 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
5906 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5907 | enum search_domain kind) | |
5908 | { | |
976ca316 | 5909 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 5910 | |
927aa2e7 | 5911 | /* debug_names_table is NULL if OBJF_READNOW. */ |
976ca316 | 5912 | if (!per_objfile->per_bfd->debug_names_table) |
927aa2e7 | 5913 | return; |
9291a0cd | 5914 | |
976ca316 | 5915 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
24c79950 | 5916 | |
c1a66c06 TV |
5917 | if (symbol_matcher == NULL && lookup_name == NULL) |
5918 | { | |
976ca316 | 5919 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
5920 | { |
5921 | QUIT; | |
5922 | ||
976ca316 SM |
5923 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
5924 | expansion_notify); | |
c1a66c06 TV |
5925 | } |
5926 | return; | |
5927 | } | |
5928 | ||
976ca316 | 5929 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
bbf2f4df | 5930 | |
c1a66c06 | 5931 | dw2_expand_symtabs_matching_symbol (map, *lookup_name, |
44ed8f3e PA |
5932 | symbol_matcher, |
5933 | kind, [&] (offset_type namei) | |
927aa2e7 | 5934 | { |
927aa2e7 JK |
5935 | /* The name was matched, now expand corresponding CUs that were |
5936 | marked. */ | |
976ca316 | 5937 | dw2_debug_names_iterator iter (map, kind, namei, per_objfile); |
bbf2f4df | 5938 | |
927aa2e7 JK |
5939 | struct dwarf2_per_cu_data *per_cu; |
5940 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 SM |
5941 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
5942 | expansion_notify); | |
3b00ef10 | 5943 | return true; |
976ca316 | 5944 | }, per_objfile); |
9291a0cd TT |
5945 | } |
5946 | ||
927aa2e7 | 5947 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
5948 | { |
5949 | dw2_has_symbols, | |
5950 | dw2_find_last_source_symtab, | |
5951 | dw2_forget_cached_source_info, | |
f8eba3c6 | 5952 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 5953 | dw2_debug_names_lookup_symbol, |
d3214198 | 5954 | NULL, |
9291a0cd | 5955 | dw2_print_stats, |
927aa2e7 | 5956 | dw2_debug_names_dump, |
927aa2e7 | 5957 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 5958 | dw2_expand_all_symtabs, |
652a8996 | 5959 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 5960 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 5961 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 5962 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 5963 | NULL, |
9291a0cd TT |
5964 | dw2_map_symbol_filenames |
5965 | }; | |
5966 | ||
4485a1c1 | 5967 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5989a64e | 5968 | to either a dwarf2_per_bfd or dwz_file object. */ |
4485a1c1 SM |
5969 | |
5970 | template <typename T> | |
5971 | static gdb::array_view<const gdb_byte> | |
5972 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5973 | { | |
5974 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5975 | ||
96b79293 | 5976 | if (section->empty ()) |
4485a1c1 SM |
5977 | return {}; |
5978 | ||
5979 | /* Older elfutils strip versions could keep the section in the main | |
5980 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5981 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5982 | return {}; |
5983 | ||
96b79293 | 5984 | section->read (obj); |
4485a1c1 | 5985 | |
8bebfcda PA |
5986 | /* dwarf2_section_info::size is a bfd_size_type, while |
5987 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5988 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5989 | is 32-bit. So we need an explicit narrowing conversion here. | |
5990 | This is fine, because it's impossible to allocate or mmap an | |
5991 | array/buffer larger than what size_t can represent. */ | |
5992 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5993 | } |
5994 | ||
87d6a7aa SM |
5995 | /* Lookup the index cache for the contents of the index associated to |
5996 | DWARF2_OBJ. */ | |
5997 | ||
5998 | static gdb::array_view<const gdb_byte> | |
5989a64e | 5999 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd) |
87d6a7aa SM |
6000 | { |
6001 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
6002 | if (build_id == nullptr) | |
6003 | return {}; | |
6004 | ||
6005 | return global_index_cache.lookup_gdb_index (build_id, | |
5989a64e | 6006 | &dwarf2_per_bfd->index_cache_res); |
87d6a7aa SM |
6007 | } |
6008 | ||
6009 | /* Same as the above, but for DWZ. */ | |
6010 | ||
6011 | static gdb::array_view<const gdb_byte> | |
6012 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
6013 | { | |
6014 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
6015 | if (build_id == nullptr) | |
6016 | return {}; | |
6017 | ||
6018 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
6019 | } | |
6020 | ||
3c0aa29a | 6021 | /* See symfile.h. */ |
9291a0cd | 6022 | |
3c0aa29a PA |
6023 | bool |
6024 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6025 | { |
976ca316 SM |
6026 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6027 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
ed2dc618 | 6028 | |
9291a0cd TT |
6029 | /* If we're about to read full symbols, don't bother with the |
6030 | indices. In this case we also don't care if some other debug | |
6031 | format is making psymtabs, because they are all about to be | |
6032 | expanded anyway. */ | |
6033 | if ((objfile->flags & OBJF_READNOW)) | |
6034 | { | |
17ee85fc TT |
6035 | /* When using READNOW, the using_index flag (set below) indicates that |
6036 | PER_BFD was already initialized, when we loaded some other objfile. */ | |
6037 | if (per_bfd->using_index) | |
6038 | { | |
6039 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6040 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6041 | return true; |
6042 | } | |
6043 | ||
6044 | per_bfd->using_index = 1; | |
976ca316 SM |
6045 | create_all_comp_units (per_objfile); |
6046 | create_all_type_units (per_objfile); | |
17ee85fc TT |
6047 | per_bfd->quick_file_names_table |
6048 | = create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
976ca316 | 6049 | per_objfile->resize_symtabs (); |
9291a0cd | 6050 | |
17ee85fc TT |
6051 | for (int i = 0; i < (per_bfd->all_comp_units.size () |
6052 | + per_bfd->all_type_units.size ()); ++i) | |
9291a0cd | 6053 | { |
17ee85fc | 6054 | dwarf2_per_cu_data *per_cu = per_bfd->get_cutu (i); |
9291a0cd | 6055 | |
17ee85fc | 6056 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
e254ef6a | 6057 | struct dwarf2_per_cu_quick_data); |
9291a0cd TT |
6058 | } |
6059 | ||
6060 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6061 | these functions will be no-ops because we will have expanded | |
6062 | all symtabs. */ | |
3c0aa29a PA |
6063 | *index_kind = dw_index_kind::GDB_INDEX; |
6064 | return true; | |
9291a0cd TT |
6065 | } |
6066 | ||
17ee85fc TT |
6067 | /* Was a debug names index already read when we processed an objfile sharing |
6068 | PER_BFD? */ | |
6069 | if (per_bfd->debug_names_table != nullptr) | |
6070 | { | |
6071 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
f8c41851 | 6072 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 6073 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6074 | return true; |
6075 | } | |
6076 | ||
6077 | /* Was a GDB index already read when we processed an objfile sharing | |
6078 | PER_BFD? */ | |
6079 | if (per_bfd->index_table != nullptr) | |
6080 | { | |
6081 | *index_kind = dw_index_kind::GDB_INDEX; | |
f8c41851 | 6082 | per_objfile->objfile->partial_symtabs = per_bfd->partial_symtabs; |
976ca316 | 6083 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6084 | return true; |
6085 | } | |
6086 | ||
efb763a5 SM |
6087 | /* There might already be partial symtabs built for this BFD. This happens |
6088 | when loading the same binary twice with the index-cache enabled. If so, | |
6089 | don't try to read an index. The objfile / per_objfile initialization will | |
6090 | be completed in dwarf2_build_psymtabs, in the standard partial symtabs | |
6091 | code path. */ | |
6092 | if (per_bfd->partial_symtabs != nullptr) | |
6093 | return false; | |
6094 | ||
976ca316 | 6095 | if (dwarf2_read_debug_names (per_objfile)) |
3c0aa29a PA |
6096 | { |
6097 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
976ca316 | 6098 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6099 | return true; |
6100 | } | |
927aa2e7 | 6101 | |
976ca316 | 6102 | if (dwarf2_read_gdb_index (per_objfile, |
5989a64e | 6103 | get_gdb_index_contents_from_section<struct dwarf2_per_bfd>, |
4485a1c1 | 6104 | get_gdb_index_contents_from_section<dwz_file>)) |
3c0aa29a PA |
6105 | { |
6106 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6107 | per_objfile->resize_symtabs (); |
3c0aa29a PA |
6108 | return true; |
6109 | } | |
9291a0cd | 6110 | |
87d6a7aa | 6111 | /* ... otherwise, try to find the index in the index cache. */ |
976ca316 | 6112 | if (dwarf2_read_gdb_index (per_objfile, |
87d6a7aa SM |
6113 | get_gdb_index_contents_from_cache, |
6114 | get_gdb_index_contents_from_cache_dwz)) | |
6115 | { | |
6116 | global_index_cache.hit (); | |
6117 | *index_kind = dw_index_kind::GDB_INDEX; | |
976ca316 | 6118 | per_objfile->resize_symtabs (); |
87d6a7aa SM |
6119 | return true; |
6120 | } | |
6121 | ||
6122 | global_index_cache.miss (); | |
3c0aa29a | 6123 | return false; |
9291a0cd TT |
6124 | } |
6125 | ||
6126 | \f | |
6127 | ||
dce234bc PP |
6128 | /* Build a partial symbol table. */ |
6129 | ||
6130 | void | |
f29dff0a | 6131 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6132 | { |
976ca316 SM |
6133 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6134 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
17ee85fc TT |
6135 | |
6136 | if (per_bfd->partial_symtabs != nullptr) | |
6137 | { | |
6138 | /* Partial symbols were already read, so now we can simply | |
6139 | attach them. */ | |
6140 | objfile->partial_symtabs = per_bfd->partial_symtabs; | |
976ca316 | 6141 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6142 | return; |
6143 | } | |
c9bf0622 | 6144 | |
a70b8144 | 6145 | try |
c9bf0622 TT |
6146 | { |
6147 | /* This isn't really ideal: all the data we allocate on the | |
6148 | objfile's obstack is still uselessly kept around. However, | |
6149 | freeing it seems unsafe. */ | |
906768f9 | 6150 | psymtab_discarder psymtabs (objfile); |
976ca316 | 6151 | dwarf2_build_psymtabs_hard (per_objfile); |
906768f9 | 6152 | psymtabs.keep (); |
87d6a7aa | 6153 | |
976ca316 | 6154 | per_objfile->resize_symtabs (); |
af758d11 | 6155 | |
87d6a7aa | 6156 | /* (maybe) store an index in the cache. */ |
976ca316 | 6157 | global_index_cache.store (per_objfile); |
c9bf0622 | 6158 | } |
230d2906 | 6159 | catch (const gdb_exception_error &except) |
492d29ea PA |
6160 | { |
6161 | exception_print (gdb_stderr, except); | |
6162 | } | |
17ee85fc TT |
6163 | |
6164 | /* Finish by setting the local reference to partial symtabs, so that | |
6165 | we don't try to read them again if reading another objfile with the same | |
6166 | BFD. If we can't in fact share, this won't make a difference anyway as | |
6167 | the dwarf2_per_bfd object won't be shared. */ | |
6168 | per_bfd->partial_symtabs = objfile->partial_symtabs; | |
c906108c | 6169 | } |
c906108c | 6170 | |
3b80fe9b DE |
6171 | /* Find the base address of the compilation unit for range lists and |
6172 | location lists. It will normally be specified by DW_AT_low_pc. | |
6173 | In DWARF-3 draft 4, the base address could be overridden by | |
6174 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6175 | compilation units with discontinuous ranges. */ | |
6176 | ||
6177 | static void | |
6178 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6179 | { | |
6180 | struct attribute *attr; | |
6181 | ||
2b24b6e4 | 6182 | cu->base_address.reset (); |
3b80fe9b DE |
6183 | |
6184 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6185 | if (attr != nullptr) |
95f982e5 | 6186 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
6187 | else |
6188 | { | |
6189 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6190 | if (attr != nullptr) |
95f982e5 | 6191 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
6192 | } |
6193 | } | |
6194 | ||
36586728 TT |
6195 | /* Helper function that returns the proper abbrev section for |
6196 | THIS_CU. */ | |
6197 | ||
6198 | static struct dwarf2_section_info * | |
6199 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6200 | { | |
6201 | struct dwarf2_section_info *abbrev; | |
c3699833 | 6202 | dwarf2_per_bfd *per_bfd = this_cu->per_bfd; |
36586728 TT |
6203 | |
6204 | if (this_cu->is_dwz) | |
c3699833 | 6205 | abbrev = &dwarf2_get_dwz_file (per_bfd)->abbrev; |
36586728 | 6206 | else |
c3699833 | 6207 | abbrev = &per_bfd->abbrev; |
36586728 TT |
6208 | |
6209 | return abbrev; | |
6210 | } | |
6211 | ||
f4dc4d17 DE |
6212 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6213 | ||
6214 | static sect_offset | |
976ca316 | 6215 | read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6216 | struct dwarf2_section_info *section, |
9c541725 | 6217 | sect_offset sect_off) |
f4dc4d17 | 6218 | { |
96b79293 | 6219 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 6220 | const gdb_byte *info_ptr; |
ac298888 | 6221 | unsigned int initial_length_size, offset_size; |
43988095 | 6222 | uint16_t version; |
f4dc4d17 | 6223 | |
976ca316 | 6224 | section->read (per_objfile->objfile); |
9c541725 | 6225 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6226 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6227 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6228 | info_ptr += initial_length_size; |
6229 | ||
6230 | version = read_2_bytes (abfd, info_ptr); | |
6231 | info_ptr += 2; | |
6232 | if (version >= 5) | |
6233 | { | |
6234 | /* Skip unit type and address size. */ | |
6235 | info_ptr += 2; | |
6236 | } | |
6237 | ||
24aa364d | 6238 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6239 | } |
6240 | ||
b83470bf TT |
6241 | /* A partial symtab that is used only for include files. */ |
6242 | struct dwarf2_include_psymtab : public partial_symtab | |
6243 | { | |
6244 | dwarf2_include_psymtab (const char *filename, struct objfile *objfile) | |
6245 | : partial_symtab (filename, objfile) | |
6246 | { | |
6247 | } | |
6248 | ||
6249 | void read_symtab (struct objfile *objfile) override | |
6250 | { | |
194d088f TV |
6251 | /* It's an include file, no symbols to read for it. |
6252 | Everything is in the includer symtab. */ | |
6253 | ||
6254 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
6255 | expansion of the includer psymtab. We use the dependencies[0] field to | |
6256 | model the includer. But if we go the regular route of calling | |
6257 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
6258 | to expand the includer, we'll only use expand_psymtab on the includer | |
6259 | (making it a non-toplevel psymtab), while if we expand the includer via | |
6260 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
6261 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
6262 | psymtab, and trigger read_symtab on the includer here directly. */ | |
6263 | includer ()->read_symtab (objfile); | |
b83470bf TT |
6264 | } |
6265 | ||
6266 | void expand_psymtab (struct objfile *objfile) override | |
6267 | { | |
194d088f TV |
6268 | /* This is not called by read_symtab, and should not be called by any |
6269 | expand_dependencies. */ | |
6270 | gdb_assert (false); | |
b83470bf TT |
6271 | } |
6272 | ||
5717c425 | 6273 | bool readin_p (struct objfile *objfile) const override |
b83470bf | 6274 | { |
5717c425 | 6275 | return includer ()->readin_p (objfile); |
b83470bf TT |
6276 | } |
6277 | ||
5717c425 | 6278 | compunit_symtab *get_compunit_symtab (struct objfile *objfile) const override |
b83470bf TT |
6279 | { |
6280 | return nullptr; | |
6281 | } | |
6282 | ||
6283 | private: | |
194d088f TV |
6284 | partial_symtab *includer () const |
6285 | { | |
6286 | /* An include psymtab has exactly one dependency: the psymtab that | |
6287 | includes it. */ | |
6288 | gdb_assert (this->number_of_dependencies == 1); | |
6289 | return this->dependencies[0]; | |
6290 | } | |
b83470bf TT |
6291 | }; |
6292 | ||
aaa75496 JB |
6293 | /* Allocate a new partial symtab for file named NAME and mark this new |
6294 | partial symtab as being an include of PST. */ | |
6295 | ||
6296 | static void | |
891813be | 6297 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
dda83cd7 | 6298 | struct objfile *objfile) |
aaa75496 | 6299 | { |
b83470bf | 6300 | dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile); |
aaa75496 | 6301 | |
fbd9ab74 | 6302 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
45940949 | 6303 | subpst->dirname = pst->dirname; |
fbd9ab74 | 6304 | |
a9342b62 | 6305 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6306 | subpst->dependencies[0] = pst; |
6307 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
6308 | } |
6309 | ||
6310 | /* Read the Line Number Program data and extract the list of files | |
6311 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6312 | partial symtab for each of these included files. */ |
aaa75496 JB |
6313 | |
6314 | static void | |
6315 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6316 | struct die_info *die, |
891813be | 6317 | dwarf2_psymtab *pst) |
aaa75496 | 6318 | { |
fff8551c | 6319 | line_header_up lh; |
d85a05f0 | 6320 | struct attribute *attr; |
aaa75496 | 6321 | |
d85a05f0 | 6322 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e TT |
6323 | if (attr != nullptr && attr->form_is_unsigned ()) |
6324 | lh = dwarf_decode_line_header ((sect_offset) attr->as_unsigned (), cu); | |
aaa75496 JB |
6325 | if (lh == NULL) |
6326 | return; /* No linetable, so no includes. */ | |
6327 | ||
79748972 TT |
6328 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6329 | that we pass in the raw text_low here; that is ok because we're | |
6330 | only decoding the line table to make include partial symtabs, and | |
6331 | so the addresses aren't really used. */ | |
4ae976d1 | 6332 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6333 | pst->raw_text_low (), 1); |
aaa75496 JB |
6334 | } |
6335 | ||
348e048f | 6336 | static hashval_t |
52dc124a | 6337 | hash_signatured_type (const void *item) |
348e048f | 6338 | { |
9a3c8263 SM |
6339 | const struct signatured_type *sig_type |
6340 | = (const struct signatured_type *) item; | |
9a619af0 | 6341 | |
348e048f | 6342 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6343 | return sig_type->signature; |
348e048f DE |
6344 | } |
6345 | ||
6346 | static int | |
52dc124a | 6347 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6348 | { |
9a3c8263 SM |
6349 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6350 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6351 | |
348e048f DE |
6352 | return lhs->signature == rhs->signature; |
6353 | } | |
6354 | ||
1fd400ff TT |
6355 | /* Allocate a hash table for signatured types. */ |
6356 | ||
b0b6a987 | 6357 | static htab_up |
298e9637 | 6358 | allocate_signatured_type_table () |
1fd400ff | 6359 | { |
b0b6a987 TT |
6360 | return htab_up (htab_create_alloc (41, |
6361 | hash_signatured_type, | |
6362 | eq_signatured_type, | |
6363 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6364 | } |
6365 | ||
d467dd73 | 6366 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6367 | |
6368 | static int | |
d467dd73 | 6369 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6370 | { |
9a3c8263 | 6371 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6372 | std::vector<signatured_type *> *all_type_units |
6373 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6374 | |
b2bdb8cf | 6375 | all_type_units->push_back (sigt); |
1fd400ff TT |
6376 | |
6377 | return 1; | |
6378 | } | |
6379 | ||
78d4d2c5 | 6380 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6381 | and fill them into TYPES_HTAB. It will process only type units, |
6382 | therefore DW_UT_type. */ | |
c88ee1f0 | 6383 | |
78d4d2c5 | 6384 | static void |
976ca316 | 6385 | create_debug_type_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6386 | struct dwo_file *dwo_file, |
b0b6a987 | 6387 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6388 | rcuh_kind section_kind) |
348e048f | 6389 | { |
976ca316 | 6390 | struct objfile *objfile = per_objfile->objfile; |
4bdcc0c1 | 6391 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6392 | bfd *abfd; |
6393 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6394 | |
4bdcc0c1 DE |
6395 | abbrev_section = (dwo_file != NULL |
6396 | ? &dwo_file->sections.abbrev | |
976ca316 | 6397 | : &per_objfile->per_bfd->abbrev); |
4bdcc0c1 | 6398 | |
6f738b01 SM |
6399 | dwarf_read_debug_printf ("Reading %s for %s:", |
6400 | section->get_name (), | |
6401 | abbrev_section->get_file_name ()); | |
09406207 | 6402 | |
96b79293 | 6403 | section->read (objfile); |
78d4d2c5 | 6404 | info_ptr = section->buffer; |
348e048f | 6405 | |
78d4d2c5 JK |
6406 | if (info_ptr == NULL) |
6407 | return; | |
348e048f | 6408 | |
78d4d2c5 JK |
6409 | /* We can't set abfd until now because the section may be empty or |
6410 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6411 | abfd = section->get_bfd_owner (); |
348e048f | 6412 | |
c0ab21c2 TT |
6413 | /* We don't use cutu_reader here because we don't need to read |
6414 | any dies: the signature is in the header. */ | |
3019eac3 | 6415 | |
78d4d2c5 JK |
6416 | end_ptr = info_ptr + section->size; |
6417 | while (info_ptr < end_ptr) | |
6418 | { | |
78d4d2c5 JK |
6419 | struct signatured_type *sig_type; |
6420 | struct dwo_unit *dwo_tu; | |
6421 | void **slot; | |
6422 | const gdb_byte *ptr = info_ptr; | |
6423 | struct comp_unit_head header; | |
6424 | unsigned int length; | |
8b70b953 | 6425 | |
9c541725 | 6426 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6427 | |
a49dd8dd JK |
6428 | /* Initialize it due to a false compiler warning. */ |
6429 | header.signature = -1; | |
9c541725 | 6430 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6431 | |
78d4d2c5 JK |
6432 | /* We need to read the type's signature in order to build the hash |
6433 | table, but we don't need anything else just yet. */ | |
348e048f | 6434 | |
976ca316 | 6435 | ptr = read_and_check_comp_unit_head (per_objfile, &header, section, |
43988095 | 6436 | abbrev_section, ptr, section_kind); |
348e048f | 6437 | |
4057dfde | 6438 | length = header.get_length (); |
6caca83c | 6439 | |
78d4d2c5 JK |
6440 | /* Skip dummy type units. */ |
6441 | if (ptr >= info_ptr + length | |
43988095 | 6442 | || peek_abbrev_code (abfd, ptr) == 0 |
d2854d8d CT |
6443 | || (header.unit_type != DW_UT_type |
6444 | && header.unit_type != DW_UT_split_type)) | |
78d4d2c5 JK |
6445 | { |
6446 | info_ptr += length; | |
6447 | continue; | |
6448 | } | |
dee91e82 | 6449 | |
78d4d2c5 JK |
6450 | if (types_htab == NULL) |
6451 | { | |
6452 | if (dwo_file) | |
298e9637 | 6453 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6454 | else |
298e9637 | 6455 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6456 | } |
8b70b953 | 6457 | |
78d4d2c5 JK |
6458 | if (dwo_file) |
6459 | { | |
6460 | sig_type = NULL; | |
976ca316 | 6461 | dwo_tu = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, dwo_unit); |
78d4d2c5 | 6462 | dwo_tu->dwo_file = dwo_file; |
43988095 | 6463 | dwo_tu->signature = header.signature; |
9c541725 | 6464 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6465 | dwo_tu->section = section; |
9c541725 | 6466 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6467 | dwo_tu->length = length; |
6468 | } | |
6469 | else | |
6470 | { | |
6471 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6472 | The real type_offset is in the DWO file. */ | |
6473 | dwo_tu = NULL; | |
976ca316 | 6474 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
43988095 | 6475 | sig_type->signature = header.signature; |
9c541725 | 6476 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 JK |
6477 | sig_type->per_cu.is_debug_types = 1; |
6478 | sig_type->per_cu.section = section; | |
9c541725 | 6479 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6480 | sig_type->per_cu.length = length; |
6481 | } | |
6482 | ||
b0b6a987 | 6483 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6484 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6485 | INSERT); | |
6486 | gdb_assert (slot != NULL); | |
6487 | if (*slot != NULL) | |
6488 | { | |
9c541725 | 6489 | sect_offset dup_sect_off; |
0349ea22 | 6490 | |
3019eac3 DE |
6491 | if (dwo_file) |
6492 | { | |
78d4d2c5 JK |
6493 | const struct dwo_unit *dup_tu |
6494 | = (const struct dwo_unit *) *slot; | |
6495 | ||
9c541725 | 6496 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6497 | } |
6498 | else | |
6499 | { | |
78d4d2c5 JK |
6500 | const struct signatured_type *dup_tu |
6501 | = (const struct signatured_type *) *slot; | |
6502 | ||
9c541725 | 6503 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6504 | } |
8b70b953 | 6505 | |
b98664d3 | 6506 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6507 | " the entry at offset %s, signature %s"), |
6508 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6509 | hex_string (header.signature)); |
78d4d2c5 JK |
6510 | } |
6511 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6512 | |
6f738b01 SM |
6513 | dwarf_read_debug_printf_v (" offset %s, signature %s", |
6514 | sect_offset_str (sect_off), | |
6515 | hex_string (header.signature)); | |
3019eac3 | 6516 | |
78d4d2c5 JK |
6517 | info_ptr += length; |
6518 | } | |
6519 | } | |
3019eac3 | 6520 | |
78d4d2c5 JK |
6521 | /* Create the hash table of all entries in the .debug_types |
6522 | (or .debug_types.dwo) section(s). | |
6523 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6524 | otherwise it is NULL. | |
b3c8eb43 | 6525 | |
78d4d2c5 | 6526 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6527 | |
78d4d2c5 | 6528 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6529 | |
78d4d2c5 | 6530 | static void |
976ca316 | 6531 | create_debug_types_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6532 | struct dwo_file *dwo_file, |
fd5866f6 | 6533 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6534 | htab_up &types_htab) |
78d4d2c5 | 6535 | { |
fd5866f6 | 6536 | for (dwarf2_section_info §ion : type_sections) |
976ca316 SM |
6537 | create_debug_type_hash_table (per_objfile, dwo_file, §ion, types_htab, |
6538 | rcuh_kind::TYPE); | |
3019eac3 DE |
6539 | } |
6540 | ||
6541 | /* Create the hash table of all entries in the .debug_types section, | |
6542 | and initialize all_type_units. | |
6543 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6544 | otherwise non-zero. */ | |
6545 | ||
6546 | static int | |
976ca316 | 6547 | create_all_type_units (dwarf2_per_objfile *per_objfile) |
3019eac3 | 6548 | { |
b0b6a987 | 6549 | htab_up types_htab; |
3019eac3 | 6550 | |
976ca316 SM |
6551 | create_debug_type_hash_table (per_objfile, NULL, &per_objfile->per_bfd->info, |
6552 | types_htab, rcuh_kind::COMPILE); | |
6553 | create_debug_types_hash_table (per_objfile, NULL, per_objfile->per_bfd->types, | |
6554 | types_htab); | |
3019eac3 DE |
6555 | if (types_htab == NULL) |
6556 | { | |
976ca316 | 6557 | per_objfile->per_bfd->signatured_types = NULL; |
3019eac3 DE |
6558 | return 0; |
6559 | } | |
6560 | ||
976ca316 | 6561 | per_objfile->per_bfd->signatured_types = std::move (types_htab); |
348e048f | 6562 | |
976ca316 SM |
6563 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
6564 | per_objfile->per_bfd->all_type_units.reserve | |
6565 | (htab_elements (per_objfile->per_bfd->signatured_types.get ())); | |
b2bdb8cf | 6566 | |
976ca316 | 6567 | htab_traverse_noresize (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6568 | add_signatured_type_cu_to_table, |
976ca316 | 6569 | &per_objfile->per_bfd->all_type_units); |
1fd400ff | 6570 | |
348e048f DE |
6571 | return 1; |
6572 | } | |
6573 | ||
5989a64e | 6574 | /* Add an entry for signature SIG to dwarf2_per_objfile->per_bfd->signatured_types. |
6aa5f3a6 DE |
6575 | If SLOT is non-NULL, it is the entry to use in the hash table. |
6576 | Otherwise we find one. */ | |
6577 | ||
6578 | static struct signatured_type * | |
976ca316 | 6579 | add_type_unit (dwarf2_per_objfile *per_objfile, ULONGEST sig, void **slot) |
6aa5f3a6 | 6580 | { |
976ca316 SM |
6581 | if (per_objfile->per_bfd->all_type_units.size () |
6582 | == per_objfile->per_bfd->all_type_units.capacity ()) | |
6583 | ++per_objfile->per_bfd->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6584 | |
976ca316 | 6585 | signatured_type *sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
b2bdb8cf | 6586 | |
976ca316 | 6587 | per_objfile->resize_symtabs (); |
af758d11 | 6588 | |
976ca316 | 6589 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
6aa5f3a6 DE |
6590 | sig_type->signature = sig; |
6591 | sig_type->per_cu.is_debug_types = 1; | |
976ca316 | 6592 | if (per_objfile->per_bfd->using_index) |
6aa5f3a6 DE |
6593 | { |
6594 | sig_type->per_cu.v.quick = | |
976ca316 | 6595 | OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
6aa5f3a6 DE |
6596 | struct dwarf2_per_cu_quick_data); |
6597 | } | |
6598 | ||
6599 | if (slot == NULL) | |
6600 | { | |
976ca316 | 6601 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 DE |
6602 | sig_type, INSERT); |
6603 | } | |
6604 | gdb_assert (*slot == NULL); | |
6605 | *slot = sig_type; | |
6606 | /* The rest of sig_type must be filled in by the caller. */ | |
6607 | return sig_type; | |
6608 | } | |
6609 | ||
a2ce51a0 DE |
6610 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6611 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6612 | ||
6613 | static void | |
976ca316 | 6614 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile *per_objfile, |
a2ce51a0 DE |
6615 | struct signatured_type *sig_entry, |
6616 | struct dwo_unit *dwo_entry) | |
6617 | { | |
976ca316 | 6618 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
1859c670 | 6619 | |
7ee85ab1 | 6620 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 | 6621 | gdb_assert (! sig_entry->per_cu.queued); |
976ca316 | 6622 | gdb_assert (per_objfile->get_cu (&sig_entry->per_cu) == NULL); |
1859c670 | 6623 | if (per_bfd->using_index) |
6aa5f3a6 DE |
6624 | { |
6625 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
976ca316 | 6626 | gdb_assert (!per_objfile->symtab_set_p (&sig_entry->per_cu)); |
6aa5f3a6 DE |
6627 | } |
6628 | else | |
6629 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6630 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6631 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6632 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6633 | gdb_assert (sig_entry->dwo_unit == NULL); |
6634 | ||
6635 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6636 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6637 | sig_entry->per_cu.length = dwo_entry->length; |
6638 | sig_entry->per_cu.reading_dwo_directly = 1; | |
1859c670 | 6639 | sig_entry->per_cu.per_bfd = per_bfd; |
a2ce51a0 DE |
6640 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6641 | sig_entry->dwo_unit = dwo_entry; | |
6642 | } | |
6643 | ||
6644 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6645 | If we haven't read the TU yet, create the signatured_type data structure |
6646 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6647 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6648 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6649 | containing that CU. Otherwise we could end up reading several other DWO | |
6650 | files (due to comdat folding) to process the transitive closure of all the | |
6651 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6652 | type signature that it needs. | |
a2ce51a0 DE |
6653 | We only do this for .gdb_index because in the psymtab case we already have |
6654 | to read all the DWOs to build the type unit groups. */ | |
6655 | ||
6656 | static struct signatured_type * | |
6657 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6658 | { | |
976ca316 | 6659 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a2ce51a0 DE |
6660 | struct dwo_file *dwo_file; |
6661 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6662 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6663 | void **slot; |
a2ce51a0 | 6664 | |
976ca316 | 6665 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 | 6666 | |
6aa5f3a6 DE |
6667 | /* If TU skeletons have been removed then we may not have read in any |
6668 | TUs yet. */ | |
976ca316 SM |
6669 | if (per_objfile->per_bfd->signatured_types == NULL) |
6670 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 DE |
6671 | |
6672 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6673 | Use the global signatured_types array to do our own comdat-folding |
6674 | of types. If this is the first time we're reading this TU, and | |
6675 | the TU has an entry in .gdb_index, replace the recorded data from | |
6676 | .gdb_index with this TU. */ | |
a2ce51a0 | 6677 | |
a2ce51a0 | 6678 | find_sig_entry.signature = sig; |
976ca316 | 6679 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6680 | &find_sig_entry, INSERT); |
9a3c8263 | 6681 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6682 | |
6683 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6684 | read. Don't reassign the global entry to point to this DWO if that's |
6685 | the case. Also note that if the TU is already being read, it may not | |
6686 | have come from a DWO, the program may be a mix of Fission-compiled | |
6687 | code and non-Fission-compiled code. */ | |
6688 | ||
6689 | /* Have we already tried to read this TU? | |
6690 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6691 | needn't exist in the global table yet). */ | |
6692 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6693 | return sig_entry; |
6694 | ||
6aa5f3a6 DE |
6695 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6696 | dwo_unit of the TU itself. */ | |
6697 | dwo_file = cu->dwo_unit->dwo_file; | |
6698 | ||
a2ce51a0 DE |
6699 | /* Ok, this is the first time we're reading this TU. */ |
6700 | if (dwo_file->tus == NULL) | |
6701 | return NULL; | |
6702 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6703 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6704 | &find_dwo_entry); | |
a2ce51a0 DE |
6705 | if (dwo_entry == NULL) |
6706 | return NULL; | |
6707 | ||
6aa5f3a6 DE |
6708 | /* If the global table doesn't have an entry for this TU, add one. */ |
6709 | if (sig_entry == NULL) | |
976ca316 | 6710 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6aa5f3a6 | 6711 | |
976ca316 | 6712 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6713 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6714 | return sig_entry; |
6715 | } | |
6716 | ||
a2ce51a0 DE |
6717 | /* Subroutine of lookup_signatured_type. |
6718 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6719 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6720 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6721 | |
6722 | static struct signatured_type * | |
6723 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6724 | { | |
976ca316 SM |
6725 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
6726 | struct dwp_file *dwp_file = get_dwp_file (per_objfile); | |
a2ce51a0 DE |
6727 | struct dwo_unit *dwo_entry; |
6728 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6729 | void **slot; |
a2ce51a0 | 6730 | |
976ca316 | 6731 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 DE |
6732 | gdb_assert (dwp_file != NULL); |
6733 | ||
6aa5f3a6 DE |
6734 | /* If TU skeletons have been removed then we may not have read in any |
6735 | TUs yet. */ | |
976ca316 SM |
6736 | if (per_objfile->per_bfd->signatured_types == NULL) |
6737 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 | 6738 | |
6aa5f3a6 | 6739 | find_sig_entry.signature = sig; |
976ca316 | 6740 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6741 | &find_sig_entry, INSERT); |
9a3c8263 | 6742 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6743 | |
6744 | /* Have we already tried to read this TU? | |
6745 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6746 | needn't exist in the global table yet). */ | |
6747 | if (sig_entry != NULL) | |
6748 | return sig_entry; | |
6749 | ||
a2ce51a0 DE |
6750 | if (dwp_file->tus == NULL) |
6751 | return NULL; | |
976ca316 SM |
6752 | dwo_entry = lookup_dwo_unit_in_dwp (per_objfile, dwp_file, NULL, sig, |
6753 | 1 /* is_debug_types */); | |
a2ce51a0 DE |
6754 | if (dwo_entry == NULL) |
6755 | return NULL; | |
6756 | ||
976ca316 SM |
6757 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6758 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6759 | |
a2ce51a0 DE |
6760 | return sig_entry; |
6761 | } | |
6762 | ||
380bca97 | 6763 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6764 | Returns NULL if signature SIG is not present in the table. |
6765 | It is up to the caller to complain about this. */ | |
348e048f DE |
6766 | |
6767 | static struct signatured_type * | |
a2ce51a0 | 6768 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6769 | { |
976ca316 | 6770 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 6771 | |
976ca316 | 6772 | if (cu->dwo_unit && per_objfile->per_bfd->using_index) |
a2ce51a0 DE |
6773 | { |
6774 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6775 | These cases require special processing. */ | |
976ca316 | 6776 | if (get_dwp_file (per_objfile) == NULL) |
a2ce51a0 DE |
6777 | return lookup_dwo_signatured_type (cu, sig); |
6778 | else | |
6779 | return lookup_dwp_signatured_type (cu, sig); | |
6780 | } | |
6781 | else | |
6782 | { | |
6783 | struct signatured_type find_entry, *entry; | |
348e048f | 6784 | |
976ca316 | 6785 | if (per_objfile->per_bfd->signatured_types == NULL) |
a2ce51a0 DE |
6786 | return NULL; |
6787 | find_entry.signature = sig; | |
9a3c8263 | 6788 | entry = ((struct signatured_type *) |
976ca316 | 6789 | htab_find (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6790 | &find_entry)); |
a2ce51a0 DE |
6791 | return entry; |
6792 | } | |
348e048f | 6793 | } |
18a8505e | 6794 | |
42e7ad6c | 6795 | /* Low level DIE reading support. */ |
348e048f | 6796 | |
d85a05f0 DJ |
6797 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6798 | ||
6799 | static void | |
6800 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6801 | struct dwarf2_cu *cu, |
3019eac3 | 6802 | struct dwarf2_section_info *section, |
685af9cd TT |
6803 | struct dwo_file *dwo_file, |
6804 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6805 | { |
fceca515 | 6806 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6807 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6808 | reader->cu = cu; |
3019eac3 | 6809 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6810 | reader->die_section = section; |
6811 | reader->buffer = section->buffer; | |
f664829e | 6812 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6813 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6814 | } |
6815 | ||
c0ab21c2 | 6816 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6817 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6818 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6819 | already. |
6820 | ||
6821 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6822 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6823 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6824 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6825 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6826 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6827 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6828 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6829 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6830 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6831 | kept around for at least as long as *RESULT_READER. | |
6832 | ||
b0c7bfa9 DE |
6833 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6834 | ||
6835 | static int | |
4ab09049 | 6836 | read_cutu_die_from_dwo (dwarf2_cu *cu, |
b0c7bfa9 | 6837 | struct dwo_unit *dwo_unit, |
b0c7bfa9 | 6838 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6839 | const char *stub_comp_dir, |
b0c7bfa9 | 6840 | struct die_reader_specs *result_reader, |
d521ce57 | 6841 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6842 | struct die_info **result_comp_unit_die, |
685af9cd | 6843 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6844 | { |
976ca316 | 6845 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
4ab09049 | 6846 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
976ca316 | 6847 | struct objfile *objfile = per_objfile->objfile; |
b0c7bfa9 | 6848 | bfd *abfd; |
d521ce57 | 6849 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6850 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6851 | int i,num_extra_attrs; | |
6852 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6853 | struct die_info *comp_unit_die; |
6854 | ||
b0aeadb3 DE |
6855 | /* At most one of these may be provided. */ |
6856 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6857 | |
b0c7bfa9 DE |
6858 | /* These attributes aren't processed until later: |
6859 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6860 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6861 | referenced later. However, these attributes are found in the stub | |
6862 | which we won't have later. In order to not impose this complication | |
6863 | on the rest of the code, we read them here and copy them to the | |
6864 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6865 | |
6866 | stmt_list = NULL; | |
6867 | low_pc = NULL; | |
6868 | high_pc = NULL; | |
6869 | ranges = NULL; | |
6870 | comp_dir = NULL; | |
6871 | ||
6872 | if (stub_comp_unit_die != NULL) | |
6873 | { | |
6874 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6875 | DWO file. */ | |
4ab09049 | 6876 | if (!per_cu->is_debug_types) |
b0c7bfa9 DE |
6877 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); |
6878 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6879 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6880 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6881 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6882 | ||
a39fdb41 | 6883 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6884 | |
18a8505e AT |
6885 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6886 | here (if needed). We need the value before we can process | |
6887 | DW_AT_ranges. */ | |
a39fdb41 | 6888 | cu->ranges_base = stub_comp_unit_die->ranges_base (); |
b0c7bfa9 | 6889 | } |
a2ce51a0 DE |
6890 | else if (stub_comp_dir != NULL) |
6891 | { | |
6892 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
fe56917a | 6893 | comp_dir = OBSTACK_ZALLOC (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6894 | comp_dir->name = DW_AT_comp_dir; |
6895 | comp_dir->form = DW_FORM_string; | |
c6481205 | 6896 | comp_dir->set_string_noncanonical (stub_comp_dir); |
a2ce51a0 | 6897 | } |
b0c7bfa9 DE |
6898 | |
6899 | /* Set up for reading the DWO CU/TU. */ | |
6900 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6901 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6902 | section->read (objfile); |
6903 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6904 | begin_info_ptr = info_ptr = (section->buffer |
6905 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6906 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 | 6907 | |
4ab09049 | 6908 | if (per_cu->is_debug_types) |
b0c7bfa9 | 6909 | { |
4ab09049 | 6910 | signatured_type *sig_type = (struct signatured_type *) per_cu; |
b0c7bfa9 | 6911 | |
976ca316 SM |
6912 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6913 | section, dwo_abbrev_section, | |
43988095 | 6914 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6915 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6916 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6917 | { |
6918 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6919 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6920 | hex_string (sig_type->signature), |
43988095 | 6921 | hex_string (cu->header.signature), |
9d8780f0 | 6922 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6923 | bfd_get_filename (abfd)); |
6924 | } | |
9c541725 | 6925 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6926 | /* For DWOs coming from DWP files, we don't know the CU length |
6927 | nor the type's offset in the TU until now. */ | |
4057dfde | 6928 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6929 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6930 | |
6931 | /* Establish the type offset that can be used to lookup the type. | |
6932 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6933 | sig_type->type_offset_in_section |
6934 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6935 | } |
6936 | else | |
6937 | { | |
976ca316 SM |
6938 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6939 | section, dwo_abbrev_section, | |
43988095 | 6940 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6941 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6942 | /* For DWOs coming from DWP files, we don't know the CU length |
6943 | until now. */ | |
4057dfde | 6944 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6945 | } |
6946 | ||
606decb2 | 6947 | dwo_abbrev_section->read (objfile); |
685af9cd | 6948 | *result_dwo_abbrev_table |
606decb2 | 6949 | = abbrev_table::read (dwo_abbrev_section, cu->header.abbrev_sect_off); |
685af9cd TT |
6950 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6951 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6952 | |
6953 | /* Read in the die, but leave space to copy over the attributes | |
6954 | from the stub. This has the benefit of simplifying the rest of | |
6955 | the code - all the work to maintain the illusion of a single | |
6956 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6957 | num_extra_attrs = ((stmt_list != NULL) | |
6958 | + (low_pc != NULL) | |
6959 | + (high_pc != NULL) | |
6960 | + (ranges != NULL) | |
6961 | + (comp_dir != NULL)); | |
6962 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6963 | num_extra_attrs); |
b0c7bfa9 DE |
6964 | |
6965 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6966 | comp_unit_die = *result_comp_unit_die; | |
6967 | i = comp_unit_die->num_attrs; | |
6968 | if (stmt_list != NULL) | |
6969 | comp_unit_die->attrs[i++] = *stmt_list; | |
6970 | if (low_pc != NULL) | |
6971 | comp_unit_die->attrs[i++] = *low_pc; | |
6972 | if (high_pc != NULL) | |
6973 | comp_unit_die->attrs[i++] = *high_pc; | |
6974 | if (ranges != NULL) | |
6975 | comp_unit_die->attrs[i++] = *ranges; | |
6976 | if (comp_dir != NULL) | |
6977 | comp_unit_die->attrs[i++] = *comp_dir; | |
6978 | comp_unit_die->num_attrs += num_extra_attrs; | |
6979 | ||
b4f54984 | 6980 | if (dwarf_die_debug) |
bf6af496 DE |
6981 | { |
6982 | fprintf_unfiltered (gdb_stdlog, | |
6983 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6984 | section->get_name (), |
bf6af496 DE |
6985 | (unsigned) (begin_info_ptr - section->buffer), |
6986 | bfd_get_filename (abfd)); | |
b4f54984 | 6987 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6988 | } |
6989 | ||
b0c7bfa9 DE |
6990 | /* Skip dummy compilation units. */ |
6991 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6992 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6993 | return 0; | |
6994 | ||
6995 | *result_info_ptr = info_ptr; | |
6996 | return 1; | |
6997 | } | |
6998 | ||
a084a2a6 AT |
6999 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
7000 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
7001 | signature is part of the header. */ | |
7002 | static gdb::optional<ULONGEST> | |
7003 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
7004 | { | |
7005 | if (cu->header.version >= 5) | |
7006 | return cu->header.signature; | |
7007 | struct attribute *attr; | |
7008 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
529908cb | 7009 | if (attr == nullptr || !attr->form_is_unsigned ()) |
a084a2a6 | 7010 | return gdb::optional<ULONGEST> (); |
529908cb | 7011 | return attr->as_unsigned (); |
a084a2a6 AT |
7012 | } |
7013 | ||
c0ab21c2 | 7014 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 7015 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 7016 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7017 | |
7018 | static struct dwo_unit * | |
4ab09049 | 7019 | lookup_dwo_unit (dwarf2_cu *cu, die_info *comp_unit_die, const char *dwo_name) |
b0c7bfa9 | 7020 | { |
4ab09049 | 7021 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
b0c7bfa9 | 7022 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 7023 | const char *comp_dir; |
b0c7bfa9 | 7024 | |
a2ce51a0 DE |
7025 | gdb_assert (cu != NULL); |
7026 | ||
b0c7bfa9 | 7027 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 7028 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 7029 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 | 7030 | |
4ab09049 SM |
7031 | if (per_cu->is_debug_types) |
7032 | dwo_unit = lookup_dwo_type_unit (cu, dwo_name, comp_dir); | |
b0c7bfa9 DE |
7033 | else |
7034 | { | |
a084a2a6 | 7035 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
4ab09049 | 7036 | |
a084a2a6 | 7037 | if (!signature.has_value ()) |
b0c7bfa9 DE |
7038 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
7039 | " [in module %s]"), | |
4ab09049 SM |
7040 | dwo_name, bfd_get_filename (per_cu->per_bfd->obfd)); |
7041 | ||
7042 | dwo_unit = lookup_dwo_comp_unit (cu, dwo_name, comp_dir, *signature); | |
b0c7bfa9 DE |
7043 | } |
7044 | ||
b0c7bfa9 DE |
7045 | return dwo_unit; |
7046 | } | |
7047 | ||
c0ab21c2 | 7048 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 7049 | See it for a description of the parameters. |
fcd3b13d | 7050 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 7051 | |
c0ab21c2 | 7052 | void |
9e021579 SM |
7053 | cutu_reader::init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
7054 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 7055 | dwarf2_cu *existing_cu) |
a2ce51a0 | 7056 | { |
a2ce51a0 | 7057 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7058 | |
7059 | /* Verify we can do the following downcast, and that we have the | |
7060 | data we need. */ | |
7061 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7062 | sig_type = (struct signatured_type *) this_cu; | |
7063 | gdb_assert (sig_type->dwo_unit != NULL); | |
7064 | ||
2e671100 SM |
7065 | dwarf2_cu *cu; |
7066 | ||
7067 | if (existing_cu != nullptr) | |
6aa5f3a6 | 7068 | { |
2e671100 SM |
7069 | cu = existing_cu; |
7070 | gdb_assert (cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 7071 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 7072 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
7073 | } |
7074 | else | |
7075 | { | |
7188ed02 | 7076 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 7077 | in per_objfile yet. */ |
7188ed02 | 7078 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
9e021579 | 7079 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
2e671100 | 7080 | cu = m_new_cu.get (); |
6aa5f3a6 DE |
7081 | } |
7082 | ||
7083 | /* A future optimization, if needed, would be to use an existing | |
7084 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7085 | could share abbrev tables. */ | |
a2ce51a0 | 7086 | |
2e671100 | 7087 | if (read_cutu_die_from_dwo (cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7088 | NULL /* stub_comp_unit_die */, |
7089 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 7090 | this, &info_ptr, |
3e225074 | 7091 | &comp_unit_die, |
c0ab21c2 | 7092 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
7093 | { |
7094 | /* Dummy die. */ | |
c0ab21c2 | 7095 | dummy_p = true; |
a2ce51a0 | 7096 | } |
a2ce51a0 DE |
7097 | } |
7098 | ||
fd820528 | 7099 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7100 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7101 | |
f4dc4d17 DE |
7102 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7103 | Otherwise the table specified in the comp unit header is read in and used. | |
7104 | This is an optimization for when we already have the abbrev table. | |
7105 | ||
2e671100 SM |
7106 | If EXISTING_CU is non-NULL, then use it. Otherwise, a new CU is |
7107 | allocated. */ | |
aaa75496 | 7108 | |
ab432490 | 7109 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7110 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 | 7111 | struct abbrev_table *abbrev_table, |
2e671100 | 7112 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
7113 | bool skip_partial) |
7114 | : die_reader_specs {}, | |
6751ebae | 7115 | m_this_cu (this_cu) |
c906108c | 7116 | { |
976ca316 | 7117 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7118 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7119 | bfd *abfd = section->get_bfd_owner (); |
c0ab21c2 | 7120 | const gdb_byte *begin_info_ptr; |
dee91e82 | 7121 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7122 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7123 | /* Non-zero if CU currently points to a DWO file and we need to |
7124 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7125 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7126 | int rereading_dwo_cu = 0; |
c906108c | 7127 | |
b4f54984 | 7128 | if (dwarf_die_debug) |
9d8780f0 | 7129 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7130 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7131 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7132 | |
a2ce51a0 DE |
7133 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7134 | file (instead of going through the stub), short-circuit all of this. */ | |
7135 | if (this_cu->reading_dwo_directly) | |
7136 | { | |
7137 | /* Narrow down the scope of possibilities to have to understand. */ | |
7138 | gdb_assert (this_cu->is_debug_types); | |
7139 | gdb_assert (abbrev_table == NULL); | |
976ca316 | 7140 | init_tu_and_read_dwo_dies (this_cu, per_objfile, existing_cu); |
a2ce51a0 DE |
7141 | return; |
7142 | } | |
7143 | ||
dee91e82 | 7144 | /* This is cheap if the section is already read in. */ |
96b79293 | 7145 | section->read (objfile); |
dee91e82 | 7146 | |
9c541725 | 7147 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7148 | |
7149 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7150 | |
2e671100 SM |
7151 | dwarf2_cu *cu; |
7152 | ||
7153 | if (existing_cu != nullptr) | |
dee91e82 | 7154 | { |
2e671100 | 7155 | cu = existing_cu; |
42e7ad6c DE |
7156 | /* If this CU is from a DWO file we need to start over, we need to |
7157 | refetch the attributes from the skeleton CU. | |
7158 | This could be optimized by retrieving those attributes from when we | |
7159 | were here the first time: the previous comp_unit_die was stored in | |
7160 | comp_unit_obstack. But there's no data yet that we need this | |
7161 | optimization. */ | |
7162 | if (cu->dwo_unit != NULL) | |
7163 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7164 | } |
7165 | else | |
7166 | { | |
7188ed02 | 7167 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 7168 | in per_objfile yet. */ |
976ca316 SM |
7169 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
7170 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); | |
c0ab21c2 | 7171 | cu = m_new_cu.get (); |
42e7ad6c | 7172 | } |
dee91e82 | 7173 | |
b0c7bfa9 | 7174 | /* Get the header. */ |
9c541725 | 7175 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7176 | { |
7177 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7178 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7179 | } |
7180 | else | |
7181 | { | |
3019eac3 | 7182 | if (this_cu->is_debug_types) |
dee91e82 | 7183 | { |
976ca316 SM |
7184 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7185 | section, abbrev_section, | |
7186 | info_ptr, rcuh_kind::TYPE); | |
dee91e82 | 7187 | |
42e7ad6c DE |
7188 | /* Since per_cu is the first member of struct signatured_type, |
7189 | we can go from a pointer to one to a pointer to the other. */ | |
7190 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7191 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7192 | gdb_assert (sig_type->type_offset_in_tu |
7193 | == cu->header.type_cu_offset_in_tu); | |
7194 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7195 | |
42e7ad6c DE |
7196 | /* LENGTH has not been set yet for type units if we're |
7197 | using .gdb_index. */ | |
4057dfde | 7198 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
7199 | |
7200 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7201 | sig_type->type_offset_in_section = |
7202 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7203 | |
7204 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7205 | } |
7206 | else | |
7207 | { | |
976ca316 SM |
7208 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7209 | section, abbrev_section, | |
43988095 JK |
7210 | info_ptr, |
7211 | rcuh_kind::COMPILE); | |
dee91e82 | 7212 | |
9c541725 | 7213 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
3ee6bb11 TV |
7214 | if (this_cu->length == 0) |
7215 | this_cu->length = cu->header.get_length (); | |
7216 | else | |
7217 | gdb_assert (this_cu->length == cu->header.get_length ()); | |
43988095 | 7218 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7219 | } |
7220 | } | |
10b3939b | 7221 | |
6caca83c | 7222 | /* Skip dummy compilation units. */ |
dee91e82 | 7223 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7224 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7225 | { |
7226 | dummy_p = true; | |
7227 | return; | |
7228 | } | |
6caca83c | 7229 | |
433df2d4 DE |
7230 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7231 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7232 | done. */ |
f4dc4d17 | 7233 | if (abbrev_table != NULL) |
685af9cd TT |
7234 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7235 | else | |
f4dc4d17 | 7236 | { |
606decb2 | 7237 | abbrev_section->read (objfile); |
c0ab21c2 | 7238 | m_abbrev_table_holder |
606decb2 | 7239 | = abbrev_table::read (abbrev_section, cu->header.abbrev_sect_off); |
c0ab21c2 | 7240 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7241 | } |
af703f96 | 7242 | |
dee91e82 | 7243 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 7244 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 7245 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 7246 | |
58f0c718 | 7247 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7248 | { |
7249 | dummy_p = true; | |
7250 | return; | |
7251 | } | |
58f0c718 | 7252 | |
b0c7bfa9 | 7253 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7254 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7255 | table from the DWO file and pass the ownership over to us. It will be | |
7256 | referenced from READER, so we must make sure to free it after we're done | |
7257 | with READER. | |
7258 | ||
b0c7bfa9 DE |
7259 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7260 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7261 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7262 | if (dwo_name != nullptr) |
3019eac3 | 7263 | { |
3019eac3 | 7264 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7265 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 7266 | |
3e225074 | 7267 | if (comp_unit_die->has_children) |
6a506a2d | 7268 | { |
b98664d3 | 7269 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7270 | " has children (offset %s) [in module %s]"), |
7271 | sect_offset_str (this_cu->sect_off), | |
7272 | bfd_get_filename (abfd)); | |
6a506a2d | 7273 | } |
4ab09049 | 7274 | dwo_unit = lookup_dwo_unit (cu, comp_unit_die, dwo_name); |
6a506a2d | 7275 | if (dwo_unit != NULL) |
3019eac3 | 7276 | { |
4ab09049 | 7277 | if (read_cutu_die_from_dwo (cu, dwo_unit, |
a2ce51a0 | 7278 | comp_unit_die, NULL, |
c0ab21c2 | 7279 | this, &info_ptr, |
3e225074 | 7280 | &dwo_comp_unit_die, |
c0ab21c2 | 7281 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7282 | { |
7283 | /* Dummy die. */ | |
c0ab21c2 | 7284 | dummy_p = true; |
6a506a2d DE |
7285 | return; |
7286 | } | |
7287 | comp_unit_die = dwo_comp_unit_die; | |
7288 | } | |
7289 | else | |
7290 | { | |
7291 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7292 | the stub. A complaint has already been logged. There's | |
7293 | not much more we can do except pass on the stub DIE to | |
7294 | die_reader_func. We don't want to throw an error on bad | |
7295 | debug info. */ | |
3019eac3 DE |
7296 | } |
7297 | } | |
c0ab21c2 | 7298 | } |
3019eac3 | 7299 | |
6751ebae TT |
7300 | void |
7301 | cutu_reader::keep () | |
c0ab21c2 | 7302 | { |
b0c7bfa9 | 7303 | /* Done, clean up. */ |
6751ebae TT |
7304 | gdb_assert (!dummy_p); |
7305 | if (m_new_cu != NULL) | |
348e048f | 7306 | { |
7188ed02 | 7307 | /* Save this dwarf2_cu in the per_objfile. The per_objfile owns it |
dda83cd7 | 7308 | now. */ |
7188ed02 SM |
7309 | dwarf2_per_objfile *per_objfile = m_new_cu->per_objfile; |
7310 | per_objfile->set_cu (m_this_cu, m_new_cu.release ()); | |
348e048f | 7311 | } |
dee91e82 DE |
7312 | } |
7313 | ||
18a8505e AT |
7314 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7315 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7316 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7317 | |
7318 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7319 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7320 | |
7321 | We fill in THIS_CU->length. | |
7322 | ||
dee91e82 | 7323 | THIS_CU->cu is always freed when done. |
3019eac3 | 7324 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7325 | to care whether it refers to the "main" CU or the DWO CU. |
7326 | ||
7327 | When parent_cu is passed, it is used to provide a default value for | |
7328 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7329 | |
ab432490 | 7330 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7331 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
7332 | struct dwarf2_cu *parent_cu, |
7333 | struct dwo_file *dwo_file) | |
7334 | : die_reader_specs {}, | |
7335 | m_this_cu (this_cu) | |
dee91e82 | 7336 | { |
976ca316 | 7337 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7338 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7339 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7340 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7341 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7342 | |
b4f54984 | 7343 | if (dwarf_die_debug) |
9d8780f0 | 7344 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7345 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7346 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7347 | |
976ca316 | 7348 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
dee91e82 | 7349 | |
33e80786 DE |
7350 | abbrev_section = (dwo_file != NULL |
7351 | ? &dwo_file->sections.abbrev | |
7352 | : get_abbrev_section_for_cu (this_cu)); | |
7353 | ||
dee91e82 | 7354 | /* This is cheap if the section is already read in. */ |
96b79293 | 7355 | section->read (objfile); |
dee91e82 | 7356 | |
976ca316 | 7357 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
dee91e82 | 7358 | |
9c541725 | 7359 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
976ca316 SM |
7360 | info_ptr = read_and_check_comp_unit_head (per_objfile, &m_new_cu->header, |
7361 | section, abbrev_section, info_ptr, | |
43988095 JK |
7362 | (this_cu->is_debug_types |
7363 | ? rcuh_kind::TYPE | |
7364 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7365 | |
18a8505e AT |
7366 | if (parent_cu != nullptr) |
7367 | { | |
c0ab21c2 TT |
7368 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7369 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7370 | } |
4057dfde | 7371 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7372 | |
7373 | /* Skip dummy compilation units. */ | |
7374 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7375 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7376 | { |
7377 | dummy_p = true; | |
7378 | return; | |
7379 | } | |
72bf9492 | 7380 | |
606decb2 | 7381 | abbrev_section->read (objfile); |
c0ab21c2 | 7382 | m_abbrev_table_holder |
606decb2 | 7383 | = abbrev_table::read (abbrev_section, m_new_cu->header.abbrev_sect_off); |
dee91e82 | 7384 | |
c0ab21c2 TT |
7385 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7386 | m_abbrev_table_holder.get ()); | |
3e225074 | 7387 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7388 | } |
7389 | ||
0018ea6f DE |
7390 | \f |
7391 | /* Type Unit Groups. | |
dee91e82 | 7392 | |
0018ea6f DE |
7393 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7394 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7395 | so that all types coming from the same compilation (.o file) are grouped | |
7396 | together. A future step could be to put the types in the same symtab as | |
7397 | the CU the types ultimately came from. */ | |
ff013f42 | 7398 | |
f4dc4d17 DE |
7399 | static hashval_t |
7400 | hash_type_unit_group (const void *item) | |
7401 | { | |
9a3c8263 SM |
7402 | const struct type_unit_group *tu_group |
7403 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7404 | |
094b34ac | 7405 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7406 | } |
348e048f DE |
7407 | |
7408 | static int | |
f4dc4d17 | 7409 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7410 | { |
9a3c8263 SM |
7411 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7412 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7413 | |
094b34ac | 7414 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7415 | } |
348e048f | 7416 | |
f4dc4d17 DE |
7417 | /* Allocate a hash table for type unit groups. */ |
7418 | ||
eaa5fa8b | 7419 | static htab_up |
298e9637 | 7420 | allocate_type_unit_groups_table () |
f4dc4d17 | 7421 | { |
eaa5fa8b TT |
7422 | return htab_up (htab_create_alloc (3, |
7423 | hash_type_unit_group, | |
7424 | eq_type_unit_group, | |
7425 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7426 | } |
dee91e82 | 7427 | |
f4dc4d17 DE |
7428 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7429 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7430 | of any one psymtab grow too big. */ | |
7431 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7432 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7433 | |
094b34ac | 7434 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7435 | Create the type_unit_group object used to hold one or more TUs. */ |
7436 | ||
7437 | static struct type_unit_group * | |
094b34ac | 7438 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7439 | { |
976ca316 SM |
7440 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7441 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
094b34ac | 7442 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7443 | struct type_unit_group *tu_group; |
f4dc4d17 | 7444 | |
976ca316 | 7445 | tu_group = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, type_unit_group); |
094b34ac | 7446 | per_cu = &tu_group->per_cu; |
1859c670 | 7447 | per_cu->per_bfd = per_bfd; |
f4dc4d17 | 7448 | |
1859c670 | 7449 | if (per_bfd->using_index) |
094b34ac | 7450 | { |
1859c670 | 7451 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
094b34ac | 7452 | struct dwarf2_per_cu_quick_data); |
094b34ac DE |
7453 | } |
7454 | else | |
7455 | { | |
9c541725 | 7456 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7457 | dwarf2_psymtab *pst; |
528e1572 | 7458 | std::string name; |
094b34ac DE |
7459 | |
7460 | /* Give the symtab a useful name for debug purposes. */ | |
7461 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7462 | name = string_printf ("<type_units_%d>", |
7463 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7464 | else |
528e1572 | 7465 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7466 | |
976ca316 | 7467 | pst = create_partial_symtab (per_cu, per_objfile, name.c_str ()); |
6d94535f | 7468 | pst->anonymous = true; |
094b34ac | 7469 | } |
f4dc4d17 | 7470 | |
094b34ac | 7471 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7472 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7473 | |
7474 | return tu_group; | |
7475 | } | |
7476 | ||
094b34ac DE |
7477 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7478 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7479 | |
7480 | static struct type_unit_group * | |
ff39bb5e | 7481 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7482 | { |
976ca316 SM |
7483 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7484 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; | |
f4dc4d17 DE |
7485 | struct type_unit_group *tu_group; |
7486 | void **slot; | |
7487 | unsigned int line_offset; | |
7488 | struct type_unit_group type_unit_group_for_lookup; | |
7489 | ||
976ca316 SM |
7490 | if (per_objfile->per_bfd->type_unit_groups == NULL) |
7491 | per_objfile->per_bfd->type_unit_groups = allocate_type_unit_groups_table (); | |
f4dc4d17 DE |
7492 | |
7493 | /* Do we need to create a new group, or can we use an existing one? */ | |
7494 | ||
529908cb | 7495 | if (stmt_list != nullptr && stmt_list->form_is_unsigned ()) |
f4dc4d17 | 7496 | { |
529908cb | 7497 | line_offset = stmt_list->as_unsigned (); |
f4dc4d17 DE |
7498 | ++tu_stats->nr_symtab_sharers; |
7499 | } | |
7500 | else | |
7501 | { | |
7502 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7503 | We can do various things here like create one group per TU or | |
7504 | spread them over multiple groups to split up the expansion work. | |
7505 | To avoid worst case scenarios (too many groups or too large groups) | |
7506 | we, umm, group them in bunches. */ | |
7507 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7508 | | (tu_stats->nr_stmt_less_type_units | |
7509 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7510 | ++tu_stats->nr_stmt_less_type_units; | |
7511 | } | |
7512 | ||
094b34ac | 7513 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7514 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
976ca316 | 7515 | slot = htab_find_slot (per_objfile->per_bfd->type_unit_groups.get (), |
f4dc4d17 DE |
7516 | &type_unit_group_for_lookup, INSERT); |
7517 | if (*slot != NULL) | |
7518 | { | |
9a3c8263 | 7519 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7520 | gdb_assert (tu_group != NULL); |
7521 | } | |
7522 | else | |
7523 | { | |
9c541725 | 7524 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7525 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7526 | *slot = tu_group; |
7527 | ++tu_stats->nr_symtabs; | |
7528 | } | |
7529 | ||
7530 | return tu_group; | |
7531 | } | |
0018ea6f DE |
7532 | \f |
7533 | /* Partial symbol tables. */ | |
7534 | ||
7535 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7536 | ||
7537 | The caller must fill in the following details: | |
7538 | dirname, textlow, texthigh. */ | |
7539 | ||
891813be | 7540 | static dwarf2_psymtab * |
7aa104c4 SM |
7541 | create_partial_symtab (dwarf2_per_cu_data *per_cu, |
7542 | dwarf2_per_objfile *per_objfile, | |
7543 | const char *name) | |
0018ea6f | 7544 | { |
7aa104c4 | 7545 | struct objfile *objfile = per_objfile->objfile; |
891813be | 7546 | dwarf2_psymtab *pst; |
0018ea6f | 7547 | |
9f4e76a4 | 7548 | pst = new dwarf2_psymtab (name, objfile, per_cu); |
0018ea6f | 7549 | |
6d94535f | 7550 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7551 | |
7552 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7553 | per_cu->v.psymtab = pst; |
7554 | ||
7555 | return pst; | |
7556 | } | |
7557 | ||
c0ab21c2 | 7558 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7559 | |
7560 | static void | |
7561 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7562 | const gdb_byte *info_ptr, |
0018ea6f | 7563 | struct die_info *comp_unit_die, |
c0ab21c2 | 7564 | enum language pretend_language) |
0018ea6f DE |
7565 | { |
7566 | struct dwarf2_cu *cu = reader->cu; | |
7aa104c4 SM |
7567 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7568 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 7569 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7570 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7571 | CORE_ADDR baseaddr; |
7572 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7573 | dwarf2_psymtab *pst; |
3a2b436a | 7574 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7575 | const char *filename; |
0018ea6f | 7576 | |
0018ea6f DE |
7577 | gdb_assert (! per_cu->is_debug_types); |
7578 | ||
c0ab21c2 | 7579 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7580 | |
0018ea6f | 7581 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7582 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7583 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7584 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7585 | if (filename == NULL) | |
0018ea6f | 7586 | filename = ""; |
2e927613 TV |
7587 | else if (strcmp (filename, artificial) == 0) |
7588 | { | |
7589 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7590 | sect_offset_str (per_cu->sect_off), |
7591 | (char *) NULL)); | |
2e927613 TV |
7592 | filename = debug_filename.get (); |
7593 | } | |
0018ea6f | 7594 | |
7aa104c4 | 7595 | pst = create_partial_symtab (per_cu, per_objfile, filename); |
0018ea6f DE |
7596 | |
7597 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7598 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7599 | |
b3b3bada | 7600 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7601 | |
7602 | dwarf2_find_base_address (comp_unit_die, cu); | |
7603 | ||
7604 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7605 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7606 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7607 | &best_highpc, cu, pst); | |
7608 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7609 | { |
7610 | CORE_ADDR low | |
7611 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7612 | - baseaddr); | |
7613 | CORE_ADDR high | |
7614 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7615 | - baseaddr - 1); | |
7616 | /* Store the contiguous range if it is not empty; it can be | |
7617 | empty for CUs with no code. */ | |
d320c2b5 TT |
7618 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7619 | low, high, pst); | |
79748972 | 7620 | } |
0018ea6f DE |
7621 | |
7622 | /* Check if comp unit has_children. | |
7623 | If so, read the rest of the partial symbols from this comp unit. | |
7624 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7625 | if (comp_unit_die->has_children) |
0018ea6f DE |
7626 | { |
7627 | struct partial_die_info *first_die; | |
7628 | CORE_ADDR lowpc, highpc; | |
7629 | ||
7630 | lowpc = ((CORE_ADDR) -1); | |
7631 | highpc = ((CORE_ADDR) 0); | |
7632 | ||
7633 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7634 | ||
7635 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7636 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7637 | |
7638 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7639 | complaints from `maint check'. */ | |
7640 | if (lowpc == ((CORE_ADDR) -1)) | |
7641 | lowpc = highpc; | |
7642 | ||
7643 | /* If the compilation unit didn't have an explicit address range, | |
7644 | then use the information extracted from its child dies. */ | |
e385593e | 7645 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7646 | { |
7647 | best_lowpc = lowpc; | |
7648 | best_highpc = highpc; | |
7649 | } | |
7650 | } | |
4ae976d1 | 7651 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7652 | best_lowpc + baseaddr) |
7653 | - baseaddr); | |
4ae976d1 | 7654 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7655 | best_highpc + baseaddr) |
7656 | - baseaddr); | |
0018ea6f | 7657 | |
ae7754b2 | 7658 | pst->end (); |
0018ea6f | 7659 | |
ae640021 | 7660 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7661 | { |
7662 | int i; | |
ae640021 | 7663 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7664 | |
7665 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7666 | post-pass. */ | |
7667 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7668 | pst->dependencies |
7669 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7670 | for (i = 0; i < len; ++i) |
7671 | { | |
7672 | pst->dependencies[i] | |
7673 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7674 | } | |
0018ea6f | 7675 | |
ae640021 | 7676 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7677 | } |
7678 | ||
7679 | /* Get the list of files included in the current compilation unit, | |
7680 | and build a psymtab for each of them. */ | |
7681 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7682 | ||
6f738b01 SM |
7683 | dwarf_read_debug_printf ("Psymtab for %s unit @%s: %s - %s" |
7684 | ", %d global, %d static syms", | |
7685 | per_cu->is_debug_types ? "type" : "comp", | |
7686 | sect_offset_str (per_cu->sect_off), | |
7687 | paddress (gdbarch, pst->text_low (objfile)), | |
7688 | paddress (gdbarch, pst->text_high (objfile)), | |
7689 | (int) pst->global_psymbols.size (), | |
7690 | (int) pst->static_psymbols.size ()); | |
0018ea6f DE |
7691 | } |
7692 | ||
7693 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7694 | Process compilation unit THIS_CU for a psymtab. */ | |
7695 | ||
7696 | static void | |
ab432490 SM |
7697 | process_psymtab_comp_unit (dwarf2_per_cu_data *this_cu, |
7698 | dwarf2_per_objfile *per_objfile, | |
135f5437 | 7699 | bool want_partial_unit, |
b93601f3 | 7700 | enum language pretend_language) |
0018ea6f DE |
7701 | { |
7702 | /* If this compilation unit was already read in, free the | |
7703 | cached copy in order to read it in again. This is | |
7704 | necessary because we skipped some symbols when we first | |
7705 | read in the compilation unit (see load_partial_dies). | |
7706 | This problem could be avoided, but the benefit is unclear. */ | |
7188ed02 | 7707 | per_objfile->remove_cu (this_cu); |
0018ea6f | 7708 | |
2e671100 | 7709 | cutu_reader reader (this_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 | 7710 | |
58990295 TV |
7711 | switch (reader.comp_unit_die->tag) |
7712 | { | |
7713 | case DW_TAG_compile_unit: | |
7714 | this_cu->unit_type = DW_UT_compile; | |
7715 | break; | |
7716 | case DW_TAG_partial_unit: | |
7717 | this_cu->unit_type = DW_UT_partial; | |
7718 | break; | |
7719 | default: | |
7720 | abort (); | |
7721 | } | |
7722 | ||
c0ab21c2 | 7723 | if (reader.dummy_p) |
f1902523 | 7724 | { |
c0ab21c2 | 7725 | /* Nothing. */ |
f1902523 | 7726 | } |
c0ab21c2 | 7727 | else if (this_cu->is_debug_types) |
3e225074 TT |
7728 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7729 | reader.comp_unit_die); | |
135f5437 TT |
7730 | else if (want_partial_unit |
7731 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7732 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7733 | reader.comp_unit_die, | |
c0ab21c2 | 7734 | pretend_language); |
0018ea6f | 7735 | |
7188ed02 | 7736 | this_cu->lang = reader.cu->language; |
58990295 | 7737 | |
0018ea6f | 7738 | /* Age out any secondary CUs. */ |
7188ed02 | 7739 | per_objfile->age_comp_units (); |
0018ea6f | 7740 | } |
f4dc4d17 DE |
7741 | |
7742 | /* Reader function for build_type_psymtabs. */ | |
7743 | ||
7744 | static void | |
7745 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7746 | const gdb_byte *info_ptr, |
3e225074 | 7747 | struct die_info *type_unit_die) |
f4dc4d17 | 7748 | { |
976ca316 | 7749 | dwarf2_per_objfile *per_objfile = reader->cu->per_objfile; |
f4dc4d17 DE |
7750 | struct dwarf2_cu *cu = reader->cu; |
7751 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7752 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7753 | struct type_unit_group *tu_group; |
7754 | struct attribute *attr; | |
7755 | struct partial_die_info *first_die; | |
7756 | CORE_ADDR lowpc, highpc; | |
891813be | 7757 | dwarf2_psymtab *pst; |
f4dc4d17 | 7758 | |
0186c6a7 DE |
7759 | gdb_assert (per_cu->is_debug_types); |
7760 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7761 | |
3e225074 | 7762 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7763 | return; |
7764 | ||
052c8bb8 | 7765 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7766 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7767 | |
df07e2c7 | 7768 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7769 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7770 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7771 | |
7772 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
976ca316 | 7773 | pst = create_partial_symtab (per_cu, per_objfile, ""); |
6d94535f | 7774 | pst->anonymous = true; |
f4dc4d17 DE |
7775 | |
7776 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7777 | ||
7778 | lowpc = (CORE_ADDR) -1; | |
7779 | highpc = (CORE_ADDR) 0; | |
7780 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7781 | ||
ae7754b2 | 7782 | pst->end (); |
f4dc4d17 DE |
7783 | } |
7784 | ||
73051182 DE |
7785 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7786 | ||
7787 | struct tu_abbrev_offset | |
7788 | { | |
b2bdb8cf SM |
7789 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7790 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7791 | {} | |
7792 | ||
7793 | signatured_type *sig_type; | |
73051182 DE |
7794 | sect_offset abbrev_offset; |
7795 | }; | |
7796 | ||
484cf504 | 7797 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7798 | |
484cf504 TT |
7799 | static bool |
7800 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7801 | const struct tu_abbrev_offset &b) | |
73051182 | 7802 | { |
484cf504 | 7803 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7804 | } |
7805 | ||
7806 | /* Efficiently read all the type units. | |
7807 | This does the bulk of the work for build_type_psymtabs. | |
7808 | ||
7809 | The efficiency is because we sort TUs by the abbrev table they use and | |
7810 | only read each abbrev table once. In one program there are 200K TUs | |
7811 | sharing 8K abbrev tables. | |
7812 | ||
7813 | The main purpose of this function is to support building the | |
5989a64e | 7814 | dwarf2_per_objfile->per_bfd->type_unit_groups table. |
73051182 DE |
7815 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we |
7816 | can collapse the search space by grouping them by stmt_list. | |
7817 | The savings can be significant, in the same program from above the 200K TUs | |
7818 | share 8K stmt_list tables. | |
7819 | ||
7820 | FUNC is expected to call get_type_unit_group, which will create the | |
7821 | struct type_unit_group if necessary and add it to | |
5989a64e | 7822 | dwarf2_per_objfile->per_bfd->type_unit_groups. */ |
73051182 DE |
7823 | |
7824 | static void | |
976ca316 | 7825 | build_type_psymtabs_1 (dwarf2_per_objfile *per_objfile) |
73051182 | 7826 | { |
976ca316 | 7827 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
685af9cd | 7828 | abbrev_table_up abbrev_table; |
73051182 | 7829 | sect_offset abbrev_offset; |
73051182 DE |
7830 | |
7831 | /* It's up to the caller to not call us multiple times. */ | |
976ca316 | 7832 | gdb_assert (per_objfile->per_bfd->type_unit_groups == NULL); |
73051182 | 7833 | |
976ca316 | 7834 | if (per_objfile->per_bfd->all_type_units.empty ()) |
73051182 DE |
7835 | return; |
7836 | ||
7837 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7838 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7839 | read each abbrev table in. | |
7840 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7841 | This is simpler and efficient enough for now. | |
7842 | ||
7843 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7844 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7845 | stmt_list value too so in practice this should work well. | |
7846 | ||
7847 | The basic algorithm here is: | |
7848 | ||
7849 | sort TUs by abbrev table | |
7850 | for each TU with same abbrev table: | |
7851 | read abbrev table if first user | |
7852 | read TU top level DIE | |
7853 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7854 | call FUNC */ | |
7855 | ||
6f738b01 | 7856 | dwarf_read_debug_printf ("Building type unit groups ..."); |
73051182 DE |
7857 | |
7858 | /* Sort in a separate table to maintain the order of all_type_units | |
7859 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf | 7860 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
976ca316 | 7861 | sorted_by_abbrev.reserve (per_objfile->per_bfd->all_type_units.size ()); |
b2bdb8cf | 7862 | |
976ca316 | 7863 | for (signatured_type *sig_type : per_objfile->per_bfd->all_type_units) |
b2bdb8cf | 7864 | sorted_by_abbrev.emplace_back |
976ca316 | 7865 | (sig_type, read_abbrev_offset (per_objfile, sig_type->per_cu.section, |
b2bdb8cf | 7866 | sig_type->per_cu.sect_off)); |
73051182 | 7867 | |
484cf504 TT |
7868 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7869 | sort_tu_by_abbrev_offset); | |
73051182 | 7870 | |
9c541725 | 7871 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7872 | |
b2bdb8cf | 7873 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7874 | { |
73051182 DE |
7875 | /* Switch to the next abbrev table if necessary. */ |
7876 | if (abbrev_table == NULL | |
b2bdb8cf | 7877 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7878 | { |
b2bdb8cf | 7879 | abbrev_offset = tu.abbrev_offset; |
606decb2 | 7880 | per_objfile->per_bfd->abbrev.read (per_objfile->objfile); |
73051182 | 7881 | abbrev_table = |
606decb2 | 7882 | abbrev_table::read (&per_objfile->per_bfd->abbrev, abbrev_offset); |
73051182 DE |
7883 | ++tu_stats->nr_uniq_abbrev_tables; |
7884 | } | |
7885 | ||
976ca316 | 7886 | cutu_reader reader (&tu.sig_type->per_cu, per_objfile, |
2e671100 | 7887 | abbrev_table.get (), nullptr, false); |
c0ab21c2 TT |
7888 | if (!reader.dummy_p) |
7889 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7890 | reader.comp_unit_die); |
73051182 | 7891 | } |
6aa5f3a6 | 7892 | } |
73051182 | 7893 | |
6aa5f3a6 DE |
7894 | /* Print collected type unit statistics. */ |
7895 | ||
7896 | static void | |
976ca316 | 7897 | print_tu_stats (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 | 7898 | { |
976ca316 | 7899 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
6aa5f3a6 | 7900 | |
6f738b01 SM |
7901 | dwarf_read_debug_printf ("Type unit statistics:"); |
7902 | dwarf_read_debug_printf (" %zu TUs", | |
7903 | per_objfile->per_bfd->all_type_units.size ()); | |
7904 | dwarf_read_debug_printf (" %d uniq abbrev tables", | |
7905 | tu_stats->nr_uniq_abbrev_tables); | |
7906 | dwarf_read_debug_printf (" %d symtabs from stmt_list entries", | |
7907 | tu_stats->nr_symtabs); | |
7908 | dwarf_read_debug_printf (" %d symtab sharers", | |
7909 | tu_stats->nr_symtab_sharers); | |
7910 | dwarf_read_debug_printf (" %d type units without a stmt_list", | |
7911 | tu_stats->nr_stmt_less_type_units); | |
7912 | dwarf_read_debug_printf (" %d all_type_units reallocs", | |
7913 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7914 | } |
7915 | ||
f4dc4d17 DE |
7916 | /* Traversal function for build_type_psymtabs. */ |
7917 | ||
7918 | static int | |
7919 | build_type_psymtab_dependencies (void **slot, void *info) | |
7920 | { | |
976ca316 SM |
7921 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
7922 | struct objfile *objfile = per_objfile->objfile; | |
f4dc4d17 | 7923 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; |
094b34ac | 7924 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 7925 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 7926 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7927 | int i; |
7928 | ||
7929 | gdb_assert (len > 0); | |
197400e8 | 7930 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
7931 | |
7932 | pst->number_of_dependencies = len; | |
a9342b62 | 7933 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7934 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7935 | { |
df07e2c7 | 7936 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
7937 | gdb_assert (iter->per_cu.is_debug_types); |
7938 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 7939 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7940 | } |
7941 | ||
df07e2c7 AB |
7942 | delete tu_group->tus; |
7943 | tu_group->tus = nullptr; | |
348e048f DE |
7944 | |
7945 | return 1; | |
7946 | } | |
7947 | ||
7948 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7949 | Build partial symbol tables for the .debug_types comp-units. */ | |
7950 | ||
7951 | static void | |
976ca316 | 7952 | build_type_psymtabs (dwarf2_per_objfile *per_objfile) |
348e048f | 7953 | { |
976ca316 | 7954 | if (! create_all_type_units (per_objfile)) |
348e048f DE |
7955 | return; |
7956 | ||
976ca316 | 7957 | build_type_psymtabs_1 (per_objfile); |
6aa5f3a6 | 7958 | } |
f4dc4d17 | 7959 | |
6aa5f3a6 DE |
7960 | /* Traversal function for process_skeletonless_type_unit. |
7961 | Read a TU in a DWO file and build partial symbols for it. */ | |
7962 | ||
7963 | static int | |
7964 | process_skeletonless_type_unit (void **slot, void *info) | |
7965 | { | |
7966 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
976ca316 | 7967 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
6aa5f3a6 DE |
7968 | struct signatured_type find_entry, *entry; |
7969 | ||
7970 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7971 | ||
976ca316 SM |
7972 | if (per_objfile->per_bfd->signatured_types == NULL) |
7973 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
6aa5f3a6 DE |
7974 | |
7975 | find_entry.signature = dwo_unit->signature; | |
976ca316 | 7976 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 7977 | &find_entry, INSERT); |
6aa5f3a6 DE |
7978 | /* If we've already seen this type there's nothing to do. What's happening |
7979 | is we're doing our own version of comdat-folding here. */ | |
7980 | if (*slot != NULL) | |
7981 | return 1; | |
7982 | ||
7983 | /* This does the job that create_all_type_units would have done for | |
7984 | this TU. */ | |
976ca316 SM |
7985 | entry = add_type_unit (per_objfile, dwo_unit->signature, slot); |
7986 | fill_in_sig_entry_from_dwo_entry (per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7987 | *slot = entry; |
7988 | ||
7989 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
976ca316 | 7990 | cutu_reader reader (&entry->per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
7991 | if (!reader.dummy_p) |
7992 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7993 | reader.comp_unit_die); |
6aa5f3a6 DE |
7994 | |
7995 | return 1; | |
7996 | } | |
7997 | ||
7998 | /* Traversal function for process_skeletonless_type_units. */ | |
7999 | ||
8000 | static int | |
8001 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8002 | { | |
8003 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8004 | ||
8005 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
8006 | htab_traverse_noresize (dwo_file->tus.get (), |
8007 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
8008 | |
8009 | return 1; | |
8010 | } | |
8011 | ||
8012 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8013 | This is needed in case a TU was emitted without its skeleton. | |
8014 | Note: This can't be done until we know what all the DWO files are. */ | |
8015 | ||
8016 | static void | |
976ca316 | 8017 | process_skeletonless_type_units (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 DE |
8018 | { |
8019 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
976ca316 SM |
8020 | if (get_dwp_file (per_objfile) == NULL |
8021 | && per_objfile->per_bfd->dwo_files != NULL) | |
6aa5f3a6 | 8022 | { |
976ca316 | 8023 | htab_traverse_noresize (per_objfile->per_bfd->dwo_files.get (), |
6aa5f3a6 | 8024 | process_dwo_file_for_skeletonless_type_units, |
976ca316 | 8025 | per_objfile); |
6aa5f3a6 | 8026 | } |
348e048f DE |
8027 | } |
8028 | ||
ed2dc618 | 8029 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8030 | |
8031 | static void | |
976ca316 | 8032 | set_partial_user (dwarf2_per_objfile *per_objfile) |
95554aad | 8033 | { |
976ca316 | 8034 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
95554aad | 8035 | { |
891813be | 8036 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 8037 | |
36586728 TT |
8038 | if (pst == NULL) |
8039 | continue; | |
8040 | ||
b76e467d | 8041 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8042 | { |
8043 | /* Set the 'user' field only if it is not already set. */ | |
8044 | if (pst->dependencies[j]->user == NULL) | |
8045 | pst->dependencies[j]->user = pst; | |
8046 | } | |
8047 | } | |
8048 | } | |
8049 | ||
93311388 DE |
8050 | /* Build the partial symbol table by doing a quick pass through the |
8051 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8052 | |
93311388 | 8053 | static void |
976ca316 | 8054 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile) |
93311388 | 8055 | { |
976ca316 | 8056 | struct objfile *objfile = per_objfile->objfile; |
93311388 | 8057 | |
6f738b01 SM |
8058 | dwarf_read_debug_printf ("Building psymtabs of objfile %s ...", |
8059 | objfile_name (objfile)); | |
45cfd468 | 8060 | |
76935768 | 8061 | scoped_restore restore_reading_psyms |
976ca316 | 8062 | = make_scoped_restore (&per_objfile->per_bfd->reading_partial_symbols, |
76935768 | 8063 | true); |
98bfdba5 | 8064 | |
976ca316 | 8065 | per_objfile->per_bfd->info.read (objfile); |
91c24f0a | 8066 | |
93311388 DE |
8067 | /* Any cached compilation units will be linked by the per-objfile |
8068 | read_in_chain. Make sure to free them when we're done. */ | |
976ca316 | 8069 | free_cached_comp_units freer (per_objfile); |
72bf9492 | 8070 | |
976ca316 | 8071 | build_type_psymtabs (per_objfile); |
348e048f | 8072 | |
976ca316 | 8073 | create_all_comp_units (per_objfile); |
c906108c | 8074 | |
60606b2c TT |
8075 | /* Create a temporary address map on a temporary obstack. We later |
8076 | copy this to the final obstack. */ | |
8268c778 | 8077 | auto_obstack temp_obstack; |
791afaa2 TT |
8078 | |
8079 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 8080 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 8081 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 8082 | |
976ca316 | 8083 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3d5afab3 TV |
8084 | { |
8085 | if (per_cu->v.psymtab != NULL) | |
8086 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
8087 | continue; | |
976ca316 | 8088 | process_psymtab_comp_unit (per_cu, per_objfile, false, |
ab432490 | 8089 | language_minimal); |
3d5afab3 | 8090 | } |
ff013f42 | 8091 | |
6aa5f3a6 | 8092 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
976ca316 | 8093 | process_skeletonless_type_units (per_objfile); |
6aa5f3a6 DE |
8094 | |
8095 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
976ca316 | 8096 | if (per_objfile->per_bfd->type_unit_groups != NULL) |
6aa5f3a6 | 8097 | { |
976ca316 SM |
8098 | htab_traverse_noresize (per_objfile->per_bfd->type_unit_groups.get (), |
8099 | build_type_psymtab_dependencies, per_objfile); | |
6aa5f3a6 DE |
8100 | } |
8101 | ||
6f738b01 | 8102 | if (dwarf_read_debug > 0) |
976ca316 | 8103 | print_tu_stats (per_objfile); |
6aa5f3a6 | 8104 | |
976ca316 | 8105 | set_partial_user (per_objfile); |
95554aad | 8106 | |
d320c2b5 TT |
8107 | objfile->partial_symtabs->psymtabs_addrmap |
8108 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 8109 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
8110 | /* At this point we want to keep the address map. */ |
8111 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8112 | |
6f738b01 SM |
8113 | dwarf_read_debug_printf ("Done building psymtabs of %s", |
8114 | objfile_name (objfile)); | |
ae038cb0 DJ |
8115 | } |
8116 | ||
dee91e82 DE |
8117 | /* Load the partial DIEs for a secondary CU into memory. |
8118 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8119 | |
dee91e82 | 8120 | static void |
ab432490 | 8121 | load_partial_comp_unit (dwarf2_per_cu_data *this_cu, |
2e671100 SM |
8122 | dwarf2_per_objfile *per_objfile, |
8123 | dwarf2_cu *existing_cu) | |
dee91e82 | 8124 | { |
2e671100 | 8125 | cutu_reader reader (this_cu, per_objfile, nullptr, existing_cu, false); |
c0ab21c2 TT |
8126 | |
8127 | if (!reader.dummy_p) | |
8128 | { | |
8129 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
8130 | language_minimal); | |
8131 | ||
8132 | /* Check if comp unit has_children. | |
8133 | If so, read the rest of the partial symbols from this comp unit. | |
8134 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 8135 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 8136 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
8137 | |
8138 | reader.keep (); | |
c0ab21c2 | 8139 | } |
ae038cb0 DJ |
8140 | } |
8141 | ||
ae038cb0 | 8142 | static void |
976ca316 | 8143 | read_comp_units_from_section (dwarf2_per_objfile *per_objfile, |
36586728 | 8144 | struct dwarf2_section_info *section, |
f1902523 | 8145 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8146 | unsigned int is_dwz) |
ae038cb0 | 8147 | { |
d521ce57 | 8148 | const gdb_byte *info_ptr; |
976ca316 | 8149 | struct objfile *objfile = per_objfile->objfile; |
be391dca | 8150 | |
6f738b01 SM |
8151 | dwarf_read_debug_printf ("Reading %s for %s", |
8152 | section->get_name (), | |
8153 | section->get_file_name ()); | |
bf6af496 | 8154 | |
96b79293 | 8155 | section->read (objfile); |
ae038cb0 | 8156 | |
36586728 | 8157 | info_ptr = section->buffer; |
6e70227d | 8158 | |
36586728 | 8159 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8160 | { |
ae038cb0 | 8161 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8162 | |
9c541725 | 8163 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8164 | |
f1902523 | 8165 | comp_unit_head cu_header; |
976ca316 | 8166 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 SM |
8167 | abbrev_section, info_ptr, |
8168 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8169 | |
8170 | /* Save the compilation unit for later lookup. */ | |
f1902523 | 8171 | if (cu_header.unit_type != DW_UT_type) |
976ca316 | 8172 | this_cu = per_objfile->per_bfd->allocate_per_cu (); |
f1902523 JK |
8173 | else |
8174 | { | |
976ca316 | 8175 | auto sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
f1902523 JK |
8176 | sig_type->signature = cu_header.signature; |
8177 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8178 | this_cu = &sig_type->per_cu; | |
8179 | } | |
8180 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8181 | this_cu->sect_off = sect_off; |
f1902523 | 8182 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8183 | this_cu->is_dwz = is_dwz; |
8a0459fd | 8184 | this_cu->section = section; |
ae038cb0 | 8185 | |
976ca316 | 8186 | per_objfile->per_bfd->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8187 | |
8188 | info_ptr = info_ptr + this_cu->length; | |
8189 | } | |
36586728 TT |
8190 | } |
8191 | ||
8192 | /* Create a list of all compilation units in OBJFILE. | |
8193 | This is only done for -readnow and building partial symtabs. */ | |
8194 | ||
8195 | static void | |
976ca316 | 8196 | create_all_comp_units (dwarf2_per_objfile *per_objfile) |
36586728 | 8197 | { |
976ca316 SM |
8198 | gdb_assert (per_objfile->per_bfd->all_comp_units.empty ()); |
8199 | read_comp_units_from_section (per_objfile, &per_objfile->per_bfd->info, | |
8200 | &per_objfile->per_bfd->abbrev, 0); | |
36586728 | 8201 | |
976ca316 | 8202 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
4db1a1dc | 8203 | if (dwz != NULL) |
976ca316 | 8204 | read_comp_units_from_section (per_objfile, &dwz->info, &dwz->abbrev, 1); |
c906108c SS |
8205 | } |
8206 | ||
5734ee8b | 8207 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8208 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8209 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8210 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8211 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8212 | |
72bf9492 DJ |
8213 | static void |
8214 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8215 | CORE_ADDR *highpc, int set_addrmap, |
8216 | struct dwarf2_cu *cu) | |
c906108c | 8217 | { |
72bf9492 | 8218 | struct partial_die_info *pdi; |
c906108c | 8219 | |
91c24f0a DC |
8220 | /* Now, march along the PDI's, descending into ones which have |
8221 | interesting children but skipping the children of the other ones, | |
8222 | until we reach the end of the compilation unit. */ | |
c906108c | 8223 | |
72bf9492 | 8224 | pdi = first_die; |
91c24f0a | 8225 | |
72bf9492 DJ |
8226 | while (pdi != NULL) |
8227 | { | |
52356b79 | 8228 | pdi->fixup (cu); |
c906108c | 8229 | |
f55ee35c | 8230 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8231 | children, so we need to look at them. Ditto for anonymous |
8232 | enums. */ | |
933c6fe4 | 8233 | |
7d00ffec | 8234 | if (pdi->raw_name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8235 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8236 | || pdi->tag == DW_TAG_imported_unit |
8237 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8238 | { |
72bf9492 | 8239 | switch (pdi->tag) |
c906108c SS |
8240 | { |
8241 | case DW_TAG_subprogram: | |
b1dc1806 | 8242 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8243 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
f9b5d5ea TV |
8244 | if (cu->language == language_cplus) |
8245 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
8246 | set_addrmap, cu); | |
c906108c | 8247 | break; |
72929c62 | 8248 | case DW_TAG_constant: |
c906108c SS |
8249 | case DW_TAG_variable: |
8250 | case DW_TAG_typedef: | |
91c24f0a | 8251 | case DW_TAG_union_type: |
317d2668 TV |
8252 | if (!pdi->is_declaration |
8253 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 8254 | { |
72bf9492 | 8255 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8256 | } |
8257 | break; | |
c906108c | 8258 | case DW_TAG_class_type: |
680b30c7 | 8259 | case DW_TAG_interface_type: |
c906108c | 8260 | case DW_TAG_structure_type: |
72bf9492 | 8261 | if (!pdi->is_declaration) |
c906108c | 8262 | { |
72bf9492 | 8263 | add_partial_symbol (pdi, cu); |
c906108c | 8264 | } |
b7fee5a3 KS |
8265 | if ((cu->language == language_rust |
8266 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8267 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8268 | set_addrmap, cu); | |
c906108c | 8269 | break; |
91c24f0a | 8270 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8271 | if (!pdi->is_declaration) |
8272 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8273 | break; |
8274 | case DW_TAG_base_type: | |
dda83cd7 | 8275 | case DW_TAG_subrange_type: |
c906108c | 8276 | /* File scope base type definitions are added to the partial |
dda83cd7 | 8277 | symbol table. */ |
72bf9492 | 8278 | add_partial_symbol (pdi, cu); |
c906108c | 8279 | break; |
d9fa45fe | 8280 | case DW_TAG_namespace: |
cdc07690 | 8281 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8282 | break; |
5d7cb8df | 8283 | case DW_TAG_module: |
59c35742 AB |
8284 | if (!pdi->is_declaration) |
8285 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8286 | break; |
95554aad TT |
8287 | case DW_TAG_imported_unit: |
8288 | { | |
8289 | struct dwarf2_per_cu_data *per_cu; | |
8290 | ||
f4dc4d17 DE |
8291 | /* For now we don't handle imported units in type units. */ |
8292 | if (cu->per_cu->is_debug_types) | |
8293 | { | |
8294 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8295 | " supported in type units [in module %s]"), | |
5e22e966 | 8296 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
8297 | } |
8298 | ||
e3b94546 | 8299 | per_cu = dwarf2_find_containing_comp_unit |
5e22e966 | 8300 | (pdi->d.sect_off, pdi->is_dwz, cu->per_objfile); |
95554aad TT |
8301 | |
8302 | /* Go read the partial unit, if needed. */ | |
8303 | if (per_cu->v.psymtab == NULL) | |
ab432490 SM |
8304 | process_psymtab_comp_unit (per_cu, cu->per_objfile, true, |
8305 | cu->language); | |
95554aad | 8306 | |
ae640021 | 8307 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8308 | } |
8309 | break; | |
74921315 KS |
8310 | case DW_TAG_imported_declaration: |
8311 | add_partial_symbol (pdi, cu); | |
8312 | break; | |
c906108c SS |
8313 | default: |
8314 | break; | |
8315 | } | |
8316 | } | |
8317 | ||
72bf9492 DJ |
8318 | /* If the die has a sibling, skip to the sibling. */ |
8319 | ||
8320 | pdi = pdi->die_sibling; | |
8321 | } | |
8322 | } | |
8323 | ||
8324 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8325 | |
72bf9492 | 8326 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8327 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8328 | Enumerators are an exception; they use the scope of their parent |
8329 | enumeration type, i.e. the name of the enumeration type is not | |
8330 | prepended to the enumerator. | |
91c24f0a | 8331 | |
72bf9492 DJ |
8332 | There are two complexities. One is DW_AT_specification; in this |
8333 | case "parent" means the parent of the target of the specification, | |
8334 | instead of the direct parent of the DIE. The other is compilers | |
8335 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8336 | the fully qualified name of structure types from their members' | |
8337 | linkage names. This must be done using the DIE's children rather | |
8338 | than the children of any DW_AT_specification target. We only need | |
8339 | to do this for structures at the top level, i.e. if the target of | |
8340 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8341 | have a parent. */ | |
8342 | ||
8343 | /* Compute the scope prefix associated with PDI's parent, in | |
8344 | compilation unit CU. The result will be allocated on CU's | |
8345 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8346 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8347 | static const char * |
72bf9492 DJ |
8348 | partial_die_parent_scope (struct partial_die_info *pdi, |
8349 | struct dwarf2_cu *cu) | |
8350 | { | |
15d034d0 | 8351 | const char *grandparent_scope; |
72bf9492 | 8352 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8353 | |
72bf9492 DJ |
8354 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8355 | then this means the parent of the specification DIE. */ | |
8356 | ||
8357 | real_pdi = pdi; | |
72bf9492 | 8358 | while (real_pdi->has_specification) |
fb816e8b | 8359 | { |
122cf0f2 AB |
8360 | auto res = find_partial_die (real_pdi->spec_offset, |
8361 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8362 | real_pdi = res.pdi; |
8363 | cu = res.cu; | |
8364 | } | |
72bf9492 DJ |
8365 | |
8366 | parent = real_pdi->die_parent; | |
8367 | if (parent == NULL) | |
8368 | return NULL; | |
8369 | ||
8370 | if (parent->scope_set) | |
8371 | return parent->scope; | |
8372 | ||
52356b79 | 8373 | parent->fixup (cu); |
72bf9492 | 8374 | |
10b3939b | 8375 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8376 | |
acebe513 UW |
8377 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8378 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8379 | Work around this problem here. */ | |
8380 | if (cu->language == language_cplus | |
6e70227d | 8381 | && parent->tag == DW_TAG_namespace |
7d00ffec | 8382 | && strcmp (parent->name (cu), "::") == 0 |
acebe513 UW |
8383 | && grandparent_scope == NULL) |
8384 | { | |
8385 | parent->scope = NULL; | |
8386 | parent->scope_set = 1; | |
8387 | return NULL; | |
8388 | } | |
8389 | ||
0a4b0913 | 8390 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8391 | if (pdi->tag == DW_TAG_enumerator) |
8392 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8393 | parent->scope = grandparent_scope; | |
8394 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8395 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8396 | || parent->tag == DW_TAG_structure_type |
8397 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8398 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8399 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8400 | || parent->tag == DW_TAG_enumeration_type |
8401 | || (cu->language == language_fortran | |
8402 | && parent->tag == DW_TAG_subprogram | |
8403 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8404 | { |
8405 | if (grandparent_scope == NULL) | |
7d00ffec | 8406 | parent->scope = parent->name (cu); |
72bf9492 | 8407 | else |
3e43a32a MS |
8408 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8409 | grandparent_scope, | |
7d00ffec | 8410 | parent->name (cu), 0, cu); |
72bf9492 | 8411 | } |
72bf9492 DJ |
8412 | else |
8413 | { | |
8414 | /* FIXME drow/2004-04-01: What should we be doing with | |
8415 | function-local names? For partial symbols, we should probably be | |
8416 | ignoring them. */ | |
fa9c3fa0 TT |
8417 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8418 | dwarf_tag_name (parent->tag), | |
8419 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8420 | parent->scope = grandparent_scope; |
c906108c SS |
8421 | } |
8422 | ||
72bf9492 DJ |
8423 | parent->scope_set = 1; |
8424 | return parent->scope; | |
8425 | } | |
8426 | ||
8427 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8428 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8429 | |
43816ebc | 8430 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8431 | partial_die_full_name (struct partial_die_info *pdi, |
8432 | struct dwarf2_cu *cu) | |
8433 | { | |
15d034d0 | 8434 | const char *parent_scope; |
72bf9492 | 8435 | |
98bfdba5 PA |
8436 | /* If this is a template instantiation, we can not work out the |
8437 | template arguments from partial DIEs. So, unfortunately, we have | |
8438 | to go through the full DIEs. At least any work we do building | |
8439 | types here will be reused if full symbols are loaded later. */ | |
8440 | if (pdi->has_template_arguments) | |
8441 | { | |
52356b79 | 8442 | pdi->fixup (cu); |
98bfdba5 | 8443 | |
7d00ffec | 8444 | if (pdi->name (cu) != NULL && strchr (pdi->name (cu), '<') == NULL) |
98bfdba5 PA |
8445 | { |
8446 | struct die_info *die; | |
8447 | struct attribute attr; | |
8448 | struct dwarf2_cu *ref_cu = cu; | |
8449 | ||
b64f50a1 | 8450 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8451 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8452 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8453 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8454 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8455 | ||
43816ebc | 8456 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8457 | } |
8458 | } | |
8459 | ||
72bf9492 DJ |
8460 | parent_scope = partial_die_parent_scope (pdi, cu); |
8461 | if (parent_scope == NULL) | |
8462 | return NULL; | |
8463 | else | |
43816ebc | 8464 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
7d00ffec TT |
8465 | pdi->name (cu), |
8466 | 0, cu)); | |
c906108c SS |
8467 | } |
8468 | ||
8469 | static void | |
72bf9492 | 8470 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8471 | { |
976ca316 SM |
8472 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
8473 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 8474 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8475 | CORE_ADDR addr = 0; |
15d034d0 | 8476 | const char *actual_name = NULL; |
e142c38c DJ |
8477 | CORE_ADDR baseaddr; |
8478 | ||
b3b3bada | 8479 | baseaddr = objfile->text_section_offset (); |
c906108c | 8480 | |
43816ebc TT |
8481 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8482 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8483 | if (built_actual_name != NULL) |
43816ebc | 8484 | actual_name = built_actual_name.get (); |
63d06c5c | 8485 | |
72bf9492 | 8486 | if (actual_name == NULL) |
7d00ffec | 8487 | actual_name = pdi->name (cu); |
72bf9492 | 8488 | |
76e288d1 TT |
8489 | partial_symbol psymbol; |
8490 | memset (&psymbol, 0, sizeof (psymbol)); | |
8491 | psymbol.ginfo.set_language (cu->language, &objfile->objfile_obstack); | |
8492 | psymbol.ginfo.section = -1; | |
8493 | ||
8494 | /* The code below indicates that the psymbol should be installed by | |
8495 | setting this. */ | |
8496 | gdb::optional<psymbol_placement> where; | |
8497 | ||
c906108c SS |
8498 | switch (pdi->tag) |
8499 | { | |
b1dc1806 | 8500 | case DW_TAG_inlined_subroutine: |
c906108c | 8501 | case DW_TAG_subprogram: |
79748972 TT |
8502 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8503 | - baseaddr); | |
0a4b0913 AB |
8504 | if (pdi->is_external |
8505 | || cu->language == language_ada | |
8506 | || (cu->language == language_fortran | |
8507 | && pdi->die_parent != NULL | |
8508 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8509 | { | |
dda83cd7 SM |
8510 | /* Normally, only "external" DIEs are part of the global scope. |
8511 | But in Ada and Fortran, we want to be able to access nested | |
8512 | procedures globally. So all Ada and Fortran subprograms are | |
8513 | stored in the global scope. */ | |
76e288d1 | 8514 | where = psymbol_placement::GLOBAL; |
c906108c SS |
8515 | } |
8516 | else | |
76e288d1 TT |
8517 | where = psymbol_placement::STATIC; |
8518 | ||
8519 | psymbol.domain = VAR_DOMAIN; | |
8520 | psymbol.aclass = LOC_BLOCK; | |
8521 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8522 | psymbol.ginfo.value.address = addr; | |
0c1b455e TT |
8523 | |
8524 | if (pdi->main_subprogram && actual_name != NULL) | |
8525 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8526 | break; |
72929c62 | 8527 | case DW_TAG_constant: |
76e288d1 TT |
8528 | psymbol.domain = VAR_DOMAIN; |
8529 | psymbol.aclass = LOC_STATIC; | |
8530 | where = (pdi->is_external | |
8531 | ? psymbol_placement::GLOBAL | |
8532 | : psymbol_placement::STATIC); | |
72929c62 | 8533 | break; |
c906108c | 8534 | case DW_TAG_variable: |
95554aad TT |
8535 | if (pdi->d.locdesc) |
8536 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8537 | |
95554aad | 8538 | if (pdi->d.locdesc |
caac4577 | 8539 | && addr == 0 |
976ca316 | 8540 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
8541 | { |
8542 | /* A global or static variable may also have been stripped | |
8543 | out by the linker if unused, in which case its address | |
8544 | will be nullified; do not add such variables into partial | |
8545 | symbol table then. */ | |
8546 | } | |
8547 | else if (pdi->is_external) | |
c906108c SS |
8548 | { |
8549 | /* Global Variable. | |
8550 | Don't enter into the minimal symbol tables as there is | |
8551 | a minimal symbol table entry from the ELF symbols already. | |
8552 | Enter into partial symbol table if it has a location | |
8553 | descriptor or a type. | |
8554 | If the location descriptor is missing, new_symbol will create | |
8555 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8556 | be determined from the minimal symbol table whenever the variable | |
8557 | is referenced. | |
8558 | The address for the partial symbol table entry is not | |
8559 | used by GDB, but it comes in handy for debugging partial symbol | |
8560 | table building. */ | |
8561 | ||
95554aad | 8562 | if (pdi->d.locdesc || pdi->has_type) |
76e288d1 TT |
8563 | { |
8564 | psymbol.domain = VAR_DOMAIN; | |
8565 | psymbol.aclass = LOC_STATIC; | |
8566 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8567 | psymbol.ginfo.value.address = addr; | |
8568 | where = psymbol_placement::GLOBAL; | |
8569 | } | |
c906108c SS |
8570 | } |
8571 | else | |
8572 | { | |
ff908ebf AW |
8573 | int has_loc = pdi->d.locdesc != NULL; |
8574 | ||
8575 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8576 | without location descriptors or constant values). */ | |
8577 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8578 | return; |
ff908ebf | 8579 | |
76e288d1 TT |
8580 | psymbol.domain = VAR_DOMAIN; |
8581 | psymbol.aclass = LOC_STATIC; | |
8582 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8583 | if (has_loc) | |
8584 | psymbol.ginfo.value.address = addr; | |
8585 | where = psymbol_placement::STATIC; | |
c906108c SS |
8586 | } |
8587 | break; | |
d8f62e84 | 8588 | case DW_TAG_array_type: |
c906108c SS |
8589 | case DW_TAG_typedef: |
8590 | case DW_TAG_base_type: | |
a02abb62 | 8591 | case DW_TAG_subrange_type: |
76e288d1 TT |
8592 | psymbol.domain = VAR_DOMAIN; |
8593 | psymbol.aclass = LOC_TYPEDEF; | |
8594 | where = psymbol_placement::STATIC; | |
c906108c | 8595 | break; |
74921315 | 8596 | case DW_TAG_imported_declaration: |
72bf9492 | 8597 | case DW_TAG_namespace: |
76e288d1 TT |
8598 | psymbol.domain = VAR_DOMAIN; |
8599 | psymbol.aclass = LOC_TYPEDEF; | |
8600 | where = psymbol_placement::GLOBAL; | |
72bf9492 | 8601 | break; |
530e8392 | 8602 | case DW_TAG_module: |
a5fd13a9 | 8603 | /* With Fortran 77 there might be a "BLOCK DATA" module |
dda83cd7 SM |
8604 | available without any name. If so, we skip the module as it |
8605 | doesn't bring any value. */ | |
a5fd13a9 | 8606 | if (actual_name != nullptr) |
76e288d1 TT |
8607 | { |
8608 | psymbol.domain = MODULE_DOMAIN; | |
8609 | psymbol.aclass = LOC_TYPEDEF; | |
8610 | where = psymbol_placement::GLOBAL; | |
8611 | } | |
530e8392 | 8612 | break; |
c906108c | 8613 | case DW_TAG_class_type: |
680b30c7 | 8614 | case DW_TAG_interface_type: |
c906108c SS |
8615 | case DW_TAG_structure_type: |
8616 | case DW_TAG_union_type: | |
8617 | case DW_TAG_enumeration_type: | |
fa4028e9 | 8618 | /* Skip external references. The DWARF standard says in the section |
dda83cd7 SM |
8619 | about "Structure, Union, and Class Type Entries": "An incomplete |
8620 | structure, union or class type is represented by a structure, | |
8621 | union or class entry that does not have a byte size attribute | |
8622 | and that has a DW_AT_declaration attribute." */ | |
fa4028e9 | 8623 | if (!pdi->has_byte_size && pdi->is_declaration) |
43816ebc | 8624 | return; |
fa4028e9 | 8625 | |
63d06c5c DC |
8626 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8627 | static vs. global. */ | |
76e288d1 TT |
8628 | psymbol.domain = STRUCT_DOMAIN; |
8629 | psymbol.aclass = LOC_TYPEDEF; | |
8630 | where = (cu->language == language_cplus | |
8631 | ? psymbol_placement::GLOBAL | |
8632 | : psymbol_placement::STATIC); | |
c906108c SS |
8633 | break; |
8634 | case DW_TAG_enumerator: | |
76e288d1 TT |
8635 | psymbol.domain = VAR_DOMAIN; |
8636 | psymbol.aclass = LOC_CONST; | |
8637 | where = (cu->language == language_cplus | |
8638 | ? psymbol_placement::GLOBAL | |
8639 | : psymbol_placement::STATIC); | |
c906108c SS |
8640 | break; |
8641 | default: | |
8642 | break; | |
8643 | } | |
76e288d1 TT |
8644 | |
8645 | if (where.has_value ()) | |
8646 | { | |
f049a313 TT |
8647 | if (built_actual_name != nullptr) |
8648 | actual_name = objfile->intern (actual_name); | |
bcfe6157 TT |
8649 | if (pdi->linkage_name == nullptr || cu->language == language_ada) |
8650 | psymbol.ginfo.set_linkage_name (actual_name); | |
8651 | else | |
8652 | { | |
8653 | psymbol.ginfo.set_demangled_name (actual_name, | |
8654 | &objfile->objfile_obstack); | |
8655 | psymbol.ginfo.set_linkage_name (pdi->linkage_name); | |
8656 | } | |
932539d7 | 8657 | cu->per_cu->v.psymtab->add_psymbol (psymbol, *where, objfile); |
76e288d1 | 8658 | } |
c906108c SS |
8659 | } |
8660 | ||
5c4e30ca DC |
8661 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8662 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8663 | the name of the enclosing namespace. */ | |
91c24f0a | 8664 | |
72bf9492 DJ |
8665 | static void |
8666 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8667 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8668 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8669 | { |
72bf9492 | 8670 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8671 | |
72bf9492 | 8672 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8673 | |
8674 | /* Now scan partial symbols in that namespace. */ | |
8675 | ||
91c24f0a | 8676 | if (pdi->has_children) |
cdc07690 | 8677 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8678 | } |
8679 | ||
5d7cb8df JK |
8680 | /* Read a partial die corresponding to a Fortran module. */ |
8681 | ||
8682 | static void | |
8683 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8684 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8685 | { |
530e8392 KB |
8686 | /* Add a symbol for the namespace. */ |
8687 | ||
8688 | add_partial_symbol (pdi, cu); | |
8689 | ||
f55ee35c | 8690 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8691 | |
8692 | if (pdi->has_children) | |
cdc07690 | 8693 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8694 | } |
8695 | ||
b1dc1806 XR |
8696 | /* Read a partial die corresponding to a subprogram or an inlined |
8697 | subprogram and create a partial symbol for that subprogram. | |
8698 | When the CU language allows it, this routine also defines a partial | |
8699 | symbol for each nested subprogram that this subprogram contains. | |
8700 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8701 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8702 | |
cdc07690 YQ |
8703 | PDI may also be a lexical block, in which case we simply search |
8704 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8705 | Again, this is only performed when the CU language allows this |
8706 | type of definitions. */ | |
8707 | ||
8708 | static void | |
8709 | add_partial_subprogram (struct partial_die_info *pdi, | |
8710 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8711 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8712 | { |
b1dc1806 | 8713 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8714 | { |
8715 | if (pdi->has_pc_info) | |
dda83cd7 SM |
8716 | { |
8717 | if (pdi->lowpc < *lowpc) | |
8718 | *lowpc = pdi->lowpc; | |
8719 | if (pdi->highpc > *highpc) | |
8720 | *highpc = pdi->highpc; | |
cdc07690 | 8721 | if (set_addrmap) |
5734ee8b | 8722 | { |
5e22e966 | 8723 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 8724 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8725 | CORE_ADDR baseaddr; |
b926417a TT |
8726 | CORE_ADDR this_highpc; |
8727 | CORE_ADDR this_lowpc; | |
5734ee8b | 8728 | |
b3b3bada | 8729 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8730 | this_lowpc |
8731 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8732 | pdi->lowpc + baseaddr) | |
8733 | - baseaddr); | |
8734 | this_highpc | |
8735 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8736 | pdi->highpc + baseaddr) | |
8737 | - baseaddr); | |
d320c2b5 | 8738 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8739 | this_lowpc, this_highpc - 1, |
9291a0cd | 8740 | cu->per_cu->v.psymtab); |
5734ee8b | 8741 | } |
dda83cd7 | 8742 | } |
481860b3 GB |
8743 | |
8744 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8745 | { | |
dda83cd7 | 8746 | if (!pdi->is_declaration) |
e8d05480 JB |
8747 | /* Ignore subprogram DIEs that do not have a name, they are |
8748 | illegal. Do not emit a complaint at this point, we will | |
8749 | do so when we convert this psymtab into a symtab. */ | |
7d00ffec | 8750 | if (pdi->name (cu)) |
e8d05480 | 8751 | add_partial_symbol (pdi, cu); |
dda83cd7 | 8752 | } |
bc30ff58 | 8753 | } |
6e70227d | 8754 | |
bc30ff58 JB |
8755 | if (! pdi->has_children) |
8756 | return; | |
8757 | ||
0a4b0913 | 8758 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8759 | { |
8760 | pdi = pdi->die_child; | |
8761 | while (pdi != NULL) | |
8762 | { | |
52356b79 | 8763 | pdi->fixup (cu); |
bc30ff58 | 8764 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8765 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8766 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8767 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8768 | pdi = pdi->die_sibling; |
8769 | } | |
8770 | } | |
8771 | } | |
8772 | ||
91c24f0a DC |
8773 | /* Read a partial die corresponding to an enumeration type. */ |
8774 | ||
72bf9492 DJ |
8775 | static void |
8776 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8777 | struct dwarf2_cu *cu) | |
91c24f0a | 8778 | { |
72bf9492 | 8779 | struct partial_die_info *pdi; |
91c24f0a | 8780 | |
7d00ffec | 8781 | if (enum_pdi->name (cu) != NULL) |
72bf9492 DJ |
8782 | add_partial_symbol (enum_pdi, cu); |
8783 | ||
8784 | pdi = enum_pdi->die_child; | |
8785 | while (pdi) | |
91c24f0a | 8786 | { |
7d00ffec | 8787 | if (pdi->tag != DW_TAG_enumerator || pdi->raw_name == NULL) |
b98664d3 | 8788 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8789 | else |
72bf9492 DJ |
8790 | add_partial_symbol (pdi, cu); |
8791 | pdi = pdi->die_sibling; | |
91c24f0a | 8792 | } |
91c24f0a DC |
8793 | } |
8794 | ||
6caca83c CC |
8795 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8796 | ||
8797 | static unsigned int | |
d521ce57 | 8798 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8799 | { |
8800 | unsigned int bytes_read; | |
8801 | ||
8802 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8803 | } | |
8804 | ||
685af9cd TT |
8805 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8806 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8807 | ||
4bb7a0a7 DJ |
8808 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8809 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8810 | the initial number. */ | |
8811 | ||
8812 | static struct abbrev_info * | |
685af9cd TT |
8813 | peek_die_abbrev (const die_reader_specs &reader, |
8814 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8815 | { |
685af9cd | 8816 | dwarf2_cu *cu = reader.cu; |
5e22e966 | 8817 | bfd *abfd = cu->per_objfile->objfile->obfd; |
685af9cd TT |
8818 | unsigned int abbrev_number |
8819 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8820 | |
8821 | if (abbrev_number == 0) | |
8822 | return NULL; | |
8823 | ||
685af9cd | 8824 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8825 | if (!abbrev) |
8826 | { | |
422b9917 | 8827 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8828 | " at offset %s [in module %s]"), |
422b9917 | 8829 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8830 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8831 | } |
8832 | ||
8833 | return abbrev; | |
8834 | } | |
8835 | ||
93311388 DE |
8836 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8837 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8838 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8839 | ||
d521ce57 TT |
8840 | static const gdb_byte * |
8841 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8842 | { |
4bb7a0a7 DJ |
8843 | while (1) |
8844 | { | |
685af9cd TT |
8845 | unsigned int bytes_read; |
8846 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8847 | ||
4bb7a0a7 DJ |
8848 | if (abbrev == NULL) |
8849 | return info_ptr + bytes_read; | |
8850 | else | |
dee91e82 | 8851 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8852 | } |
8853 | } | |
8854 | ||
93311388 DE |
8855 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8856 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8857 | abbrev corresponding to that skipped uleb128 should be passed in |
8858 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8859 | children. */ | |
8860 | ||
d521ce57 TT |
8861 | static const gdb_byte * |
8862 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8863 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8864 | { |
8865 | unsigned int bytes_read; | |
8866 | struct attribute attr; | |
dee91e82 DE |
8867 | bfd *abfd = reader->abfd; |
8868 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8869 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8870 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8871 | unsigned int form, i; |
8872 | ||
8873 | for (i = 0; i < abbrev->num_attrs; i++) | |
8874 | { | |
8875 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8876 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8877 | { | |
7a5f294d | 8878 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 8879 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8880 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8881 | else |
b9502d3f | 8882 | { |
0826b30a | 8883 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8884 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8885 | |
8886 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8887 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8888 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8889 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8890 | else |
8891 | return sibling_ptr; | |
8892 | } | |
4bb7a0a7 DJ |
8893 | } |
8894 | ||
8895 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8896 | form = abbrev->attrs[i].form; | |
8897 | skip_attribute: | |
8898 | switch (form) | |
8899 | { | |
4bb7a0a7 | 8900 | case DW_FORM_ref_addr: |
ae411497 TT |
8901 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8902 | and later it is offset sized. */ | |
8903 | if (cu->header.version == 2) | |
8904 | info_ptr += cu->header.addr_size; | |
8905 | else | |
8906 | info_ptr += cu->header.offset_size; | |
8907 | break; | |
36586728 TT |
8908 | case DW_FORM_GNU_ref_alt: |
8909 | info_ptr += cu->header.offset_size; | |
8910 | break; | |
ae411497 | 8911 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8912 | info_ptr += cu->header.addr_size; |
8913 | break; | |
8914 | case DW_FORM_data1: | |
8915 | case DW_FORM_ref1: | |
8916 | case DW_FORM_flag: | |
8fe0f950 | 8917 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8918 | info_ptr += 1; |
8919 | break; | |
2dc7f7b3 | 8920 | case DW_FORM_flag_present: |
43988095 | 8921 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8922 | break; |
4bb7a0a7 DJ |
8923 | case DW_FORM_data2: |
8924 | case DW_FORM_ref2: | |
8fe0f950 | 8925 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8926 | info_ptr += 2; |
8927 | break; | |
8fe0f950 AT |
8928 | case DW_FORM_strx3: |
8929 | info_ptr += 3; | |
8930 | break; | |
4bb7a0a7 DJ |
8931 | case DW_FORM_data4: |
8932 | case DW_FORM_ref4: | |
8fe0f950 | 8933 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8934 | info_ptr += 4; |
8935 | break; | |
8936 | case DW_FORM_data8: | |
8937 | case DW_FORM_ref8: | |
55f1336d | 8938 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8939 | info_ptr += 8; |
8940 | break; | |
0224619f JK |
8941 | case DW_FORM_data16: |
8942 | info_ptr += 16; | |
8943 | break; | |
4bb7a0a7 | 8944 | case DW_FORM_string: |
9b1c24c8 | 8945 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8946 | info_ptr += bytes_read; |
8947 | break; | |
2dc7f7b3 | 8948 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8949 | case DW_FORM_strp: |
36586728 | 8950 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8951 | info_ptr += cu->header.offset_size; |
8952 | break; | |
2dc7f7b3 | 8953 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8954 | case DW_FORM_block: |
8955 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8956 | info_ptr += bytes_read; | |
8957 | break; | |
8958 | case DW_FORM_block1: | |
8959 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8960 | break; | |
8961 | case DW_FORM_block2: | |
8962 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8963 | break; | |
8964 | case DW_FORM_block4: | |
8965 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8966 | break; | |
336d760d | 8967 | case DW_FORM_addrx: |
cf532bd1 | 8968 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8969 | case DW_FORM_sdata: |
8970 | case DW_FORM_udata: | |
8971 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8972 | case DW_FORM_GNU_addr_index: |
8973 | case DW_FORM_GNU_str_index: | |
18a8505e | 8974 | case DW_FORM_rnglistx: |
41144253 | 8975 | case DW_FORM_loclistx: |
d521ce57 | 8976 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8977 | break; |
8978 | case DW_FORM_indirect: | |
8979 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8980 | info_ptr += bytes_read; | |
8981 | /* We need to continue parsing from here, so just go back to | |
8982 | the top. */ | |
8983 | goto skip_attribute; | |
8984 | ||
8985 | default: | |
3e43a32a MS |
8986 | error (_("Dwarf Error: Cannot handle %s " |
8987 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8988 | dwarf_form_name (form), |
8989 | bfd_get_filename (abfd)); | |
8990 | } | |
8991 | } | |
8992 | ||
8993 | if (abbrev->has_children) | |
dee91e82 | 8994 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
8995 | else |
8996 | return info_ptr; | |
8997 | } | |
8998 | ||
93311388 | 8999 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9000 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9001 | |
d521ce57 | 9002 | static const gdb_byte * |
dee91e82 DE |
9003 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9004 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9005 | const gdb_byte *info_ptr) |
91c24f0a DC |
9006 | { |
9007 | /* Do we know the sibling already? */ | |
72bf9492 | 9008 | |
91c24f0a DC |
9009 | if (orig_pdi->sibling) |
9010 | return orig_pdi->sibling; | |
9011 | ||
9012 | /* Are there any children to deal with? */ | |
9013 | ||
9014 | if (!orig_pdi->has_children) | |
9015 | return info_ptr; | |
9016 | ||
4bb7a0a7 | 9017 | /* Skip the children the long way. */ |
91c24f0a | 9018 | |
dee91e82 | 9019 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9020 | } |
9021 | ||
257e7a09 | 9022 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9023 | not NULL. */ |
c906108c | 9024 | |
891813be TT |
9025 | void |
9026 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 9027 | { |
976ca316 | 9028 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 9029 | |
976ca316 | 9030 | gdb_assert (!per_objfile->symtab_set_p (per_cu_data)); |
af758d11 | 9031 | |
077cbab2 TT |
9032 | /* If this psymtab is constructed from a debug-only objfile, the |
9033 | has_section_at_zero flag will not necessarily be correct. We | |
9034 | can get the correct value for this flag by looking at the data | |
9035 | associated with the (presumably stripped) associated objfile. */ | |
9036 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 9037 | { |
976ca316 | 9038 | dwarf2_per_objfile *per_objfile_backlink |
077cbab2 | 9039 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
c906108c | 9040 | |
976ca316 SM |
9041 | per_objfile->per_bfd->has_section_at_zero |
9042 | = per_objfile_backlink->per_bfd->has_section_at_zero; | |
077cbab2 | 9043 | } |
98bfdba5 | 9044 | |
8566b89b | 9045 | expand_psymtab (objfile); |
95554aad | 9046 | |
976ca316 | 9047 | process_cu_includes (per_objfile); |
c906108c | 9048 | } |
9cdd5dbd DE |
9049 | \f |
9050 | /* Reading in full CUs. */ | |
c906108c | 9051 | |
10b3939b DJ |
9052 | /* Add PER_CU to the queue. */ |
9053 | ||
9054 | static void | |
120ce1b5 SM |
9055 | queue_comp_unit (dwarf2_per_cu_data *per_cu, |
9056 | dwarf2_per_objfile *per_objfile, | |
95554aad | 9057 | enum language pretend_language) |
10b3939b | 9058 | { |
10b3939b | 9059 | per_cu->queued = 1; |
120ce1b5 | 9060 | per_cu->per_bfd->queue.emplace (per_cu, per_objfile, pretend_language); |
10b3939b DJ |
9061 | } |
9062 | ||
89e63ee4 DE |
9063 | /* If PER_CU is not yet queued, add it to the queue. |
9064 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9065 | dependency. | |
0907af0c | 9066 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9067 | meaning either PER_CU is already queued or it is already loaded. |
9068 | ||
9069 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9070 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9071 | |
9072 | static int | |
89e63ee4 | 9073 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
120ce1b5 SM |
9074 | dwarf2_per_cu_data *per_cu, |
9075 | dwarf2_per_objfile *per_objfile, | |
0907af0c DE |
9076 | enum language pretend_language) |
9077 | { | |
9078 | /* We may arrive here during partial symbol reading, if we need full | |
9079 | DIEs to process an unusual case (e.g. template arguments). Do | |
9080 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
1859c670 | 9081 | if (per_cu->per_bfd->reading_partial_symbols) |
0907af0c | 9082 | { |
7188ed02 SM |
9083 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9084 | ||
9085 | if (cu == NULL || cu->dies == NULL) | |
0907af0c DE |
9086 | return 1; |
9087 | return 0; | |
9088 | } | |
9089 | ||
9090 | /* Mark the dependence relation so that we don't flush PER_CU | |
9091 | too early. */ | |
89e63ee4 DE |
9092 | if (dependent_cu != NULL) |
9093 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9094 | |
9095 | /* If it's already on the queue, we have nothing to do. */ | |
9096 | if (per_cu->queued) | |
9097 | return 0; | |
9098 | ||
9099 | /* If the compilation unit is already loaded, just mark it as | |
9100 | used. */ | |
7188ed02 SM |
9101 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9102 | if (cu != nullptr) | |
0907af0c | 9103 | { |
7188ed02 | 9104 | cu->last_used = 0; |
0907af0c DE |
9105 | return 0; |
9106 | } | |
9107 | ||
9108 | /* Add it to the queue. */ | |
120ce1b5 | 9109 | queue_comp_unit (per_cu, per_objfile, pretend_language); |
0907af0c DE |
9110 | |
9111 | return 1; | |
9112 | } | |
9113 | ||
10b3939b DJ |
9114 | /* Process the queue. */ |
9115 | ||
9116 | static void | |
976ca316 | 9117 | process_queue (dwarf2_per_objfile *per_objfile) |
10b3939b | 9118 | { |
6f738b01 SM |
9119 | dwarf_read_debug_printf ("Expanding one or more symtabs of objfile %s ...", |
9120 | objfile_name (per_objfile->objfile)); | |
45cfd468 | 9121 | |
03dd20cc DJ |
9122 | /* The queue starts out with one item, but following a DIE reference |
9123 | may load a new CU, adding it to the end of the queue. */ | |
976ca316 | 9124 | while (!per_objfile->per_bfd->queue.empty ()) |
10b3939b | 9125 | { |
976ca316 | 9126 | dwarf2_queue_item &item = per_objfile->per_bfd->queue.front (); |
7188ed02 | 9127 | dwarf2_per_cu_data *per_cu = item.per_cu; |
39856def | 9128 | |
976ca316 | 9129 | if (!per_objfile->symtab_set_p (per_cu)) |
f4dc4d17 | 9130 | { |
976ca316 | 9131 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
f4dc4d17 | 9132 | |
7188ed02 SM |
9133 | /* Skip dummy CUs. */ |
9134 | if (cu != nullptr) | |
73be47f5 | 9135 | { |
7188ed02 SM |
9136 | unsigned int debug_print_threshold; |
9137 | char buf[100]; | |
9138 | ||
9139 | if (per_cu->is_debug_types) | |
9140 | { | |
9141 | struct signatured_type *sig_type = | |
9142 | (struct signatured_type *) per_cu; | |
9143 | ||
9144 | sprintf (buf, "TU %s at offset %s", | |
9145 | hex_string (sig_type->signature), | |
9146 | sect_offset_str (per_cu->sect_off)); | |
9147 | /* There can be 100s of TUs. | |
9148 | Only print them in verbose mode. */ | |
9149 | debug_print_threshold = 2; | |
9150 | } | |
9151 | else | |
9152 | { | |
9153 | sprintf (buf, "CU at offset %s", | |
9154 | sect_offset_str (per_cu->sect_off)); | |
9155 | debug_print_threshold = 1; | |
9156 | } | |
247f5c4f | 9157 | |
7188ed02 | 9158 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 9159 | dwarf_read_debug_printf ("Expanding symtab of %s", buf); |
f4dc4d17 | 9160 | |
7188ed02 SM |
9161 | if (per_cu->is_debug_types) |
9162 | process_full_type_unit (cu, item.pretend_language); | |
9163 | else | |
9164 | process_full_comp_unit (cu, item.pretend_language); | |
f4dc4d17 | 9165 | |
7188ed02 | 9166 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 9167 | dwarf_read_debug_printf ("Done expanding %s", buf); |
7188ed02 | 9168 | } |
f4dc4d17 | 9169 | } |
10b3939b | 9170 | |
7188ed02 | 9171 | per_cu->queued = 0; |
976ca316 | 9172 | per_objfile->per_bfd->queue.pop (); |
10b3939b DJ |
9173 | } |
9174 | ||
6f738b01 SM |
9175 | dwarf_read_debug_printf ("Done expanding symtabs of %s.", |
9176 | objfile_name (per_objfile->objfile)); | |
10b3939b DJ |
9177 | } |
9178 | ||
10b3939b DJ |
9179 | /* Read in full symbols for PST, and anything it depends on. */ |
9180 | ||
8566b89b TT |
9181 | void |
9182 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9183 | { |
af758d11 | 9184 | gdb_assert (!readin_p (objfile)); |
95554aad | 9185 | |
17ee85fc TT |
9186 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9187 | free_cached_comp_units freer (per_objfile); | |
48993951 | 9188 | expand_dependencies (objfile); |
aaa75496 | 9189 | |
97a1449a | 9190 | dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); |
5717c425 | 9191 | gdb_assert (get_compunit_symtab (objfile) != nullptr); |
10b3939b DJ |
9192 | } |
9193 | ||
af758d11 SM |
9194 | /* See psympriv.h. */ |
9195 | ||
9196 | bool | |
9197 | dwarf2_psymtab::readin_p (struct objfile *objfile) const | |
9198 | { | |
9199 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9200 | return per_objfile->symtab_set_p (per_cu_data); | |
9201 | } | |
9202 | ||
9203 | /* See psympriv.h. */ | |
9204 | ||
9205 | compunit_symtab * | |
9206 | dwarf2_psymtab::get_compunit_symtab (struct objfile *objfile) const | |
9207 | { | |
9208 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9209 | return per_objfile->get_symtab (per_cu_data); | |
9210 | } | |
9211 | ||
dee91e82 DE |
9212 | /* Trivial hash function for die_info: the hash value of a DIE |
9213 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9214 | |
dee91e82 DE |
9215 | static hashval_t |
9216 | die_hash (const void *item) | |
10b3939b | 9217 | { |
9a3c8263 | 9218 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9219 | |
9c541725 | 9220 | return to_underlying (die->sect_off); |
dee91e82 | 9221 | } |
63d06c5c | 9222 | |
dee91e82 DE |
9223 | /* Trivial comparison function for die_info structures: two DIEs |
9224 | are equal if they have the same offset. */ | |
98bfdba5 | 9225 | |
dee91e82 DE |
9226 | static int |
9227 | die_eq (const void *item_lhs, const void *item_rhs) | |
9228 | { | |
9a3c8263 SM |
9229 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9230 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9231 | |
9c541725 | 9232 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9233 | } |
c906108c | 9234 | |
4a636814 SM |
9235 | /* Load the DIEs associated with PER_CU into memory. |
9236 | ||
9237 | In some cases, the caller, while reading partial symbols, will need to load | |
9238 | the full symbols for the CU for some reason. It will already have a | |
9239 | dwarf2_cu object for THIS_CU and pass it as EXISTING_CU, so it can be re-used | |
9240 | rather than creating a new one. */ | |
c906108c | 9241 | |
dee91e82 | 9242 | static void |
ab432490 SM |
9243 | load_full_comp_unit (dwarf2_per_cu_data *this_cu, |
9244 | dwarf2_per_objfile *per_objfile, | |
4a636814 | 9245 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
9246 | bool skip_partial, |
9247 | enum language pretend_language) | |
dee91e82 | 9248 | { |
c0ab21c2 TT |
9249 | gdb_assert (! this_cu->is_debug_types); |
9250 | ||
7188ed02 | 9251 | cutu_reader reader (this_cu, per_objfile, NULL, existing_cu, skip_partial); |
c0ab21c2 TT |
9252 | if (reader.dummy_p) |
9253 | return; | |
9254 | ||
9255 | struct dwarf2_cu *cu = reader.cu; | |
9256 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9257 | |
dee91e82 DE |
9258 | gdb_assert (cu->die_hash == NULL); |
9259 | cu->die_hash = | |
9260 | htab_create_alloc_ex (cu->header.length / 12, | |
9261 | die_hash, | |
9262 | die_eq, | |
9263 | NULL, | |
9264 | &cu->comp_unit_obstack, | |
9265 | hashtab_obstack_allocate, | |
9266 | dummy_obstack_deallocate); | |
e142c38c | 9267 | |
3e225074 | 9268 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
9269 | reader.comp_unit_die->child |
9270 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9271 | &info_ptr, reader.comp_unit_die); | |
9272 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9273 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9274 | |
9275 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9276 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9277 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9278 | or we won't be able to build types correctly. |
9279 | Similarly, if we do not read the producer, we can not apply | |
9280 | producer-specific interpretation. */ | |
c0ab21c2 | 9281 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
9282 | |
9283 | reader.keep (); | |
10b3939b DJ |
9284 | } |
9285 | ||
3da10d80 KS |
9286 | /* Add a DIE to the delayed physname list. */ |
9287 | ||
9288 | static void | |
9289 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9290 | const char *name, struct die_info *die, | |
9291 | struct dwarf2_cu *cu) | |
9292 | { | |
9293 | struct delayed_method_info mi; | |
9294 | mi.type = type; | |
9295 | mi.fnfield_index = fnfield_index; | |
9296 | mi.index = index; | |
9297 | mi.name = name; | |
9298 | mi.die = die; | |
c89b44cd | 9299 | cu->method_list.push_back (mi); |
3da10d80 KS |
9300 | } |
9301 | ||
3693fdb3 PA |
9302 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9303 | "const" / "volatile". If so, decrements LEN by the length of the | |
9304 | modifier and return true. Otherwise return false. */ | |
9305 | ||
9306 | template<size_t N> | |
9307 | static bool | |
9308 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9309 | { | |
9310 | size_t mod_len = sizeof (mod) - 1; | |
9311 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9312 | { | |
9313 | len -= mod_len; | |
9314 | return true; | |
9315 | } | |
9316 | return false; | |
9317 | } | |
9318 | ||
3da10d80 KS |
9319 | /* Compute the physnames of any methods on the CU's method list. |
9320 | ||
9321 | The computation of method physnames is delayed in order to avoid the | |
9322 | (bad) condition that one of the method's formal parameters is of an as yet | |
9323 | incomplete type. */ | |
9324 | ||
9325 | static void | |
9326 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9327 | { | |
3693fdb3 | 9328 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9329 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9330 | return; |
9331 | gdb_assert (cu->language == language_cplus); | |
9332 | ||
52941706 | 9333 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9334 | { |
1d06ead6 | 9335 | const char *physname; |
3da10d80 | 9336 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9337 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9338 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9339 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9340 | = physname ? physname : ""; |
3693fdb3 PA |
9341 | |
9342 | /* Since there's no tag to indicate whether a method is a | |
9343 | const/volatile overload, extract that information out of the | |
9344 | demangled name. */ | |
9345 | if (physname != NULL) | |
9346 | { | |
9347 | size_t len = strlen (physname); | |
9348 | ||
9349 | while (1) | |
9350 | { | |
9351 | if (physname[len] == ')') /* shortcut */ | |
9352 | break; | |
9353 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9354 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9355 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9356 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9357 | else |
9358 | break; | |
9359 | } | |
9360 | } | |
3da10d80 | 9361 | } |
c89b44cd TT |
9362 | |
9363 | /* The list is no longer needed. */ | |
9364 | cu->method_list.clear (); | |
3da10d80 KS |
9365 | } |
9366 | ||
a766d390 DE |
9367 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9368 | and it's not clear if/how imported objects will appear. | |
9369 | To keep Go support simple until that's worked out, | |
9370 | go back through what we've read and create something usable. | |
9371 | We could do this while processing each DIE, and feels kinda cleaner, | |
9372 | but that way is more invasive. | |
9373 | This is to, for example, allow the user to type "p var" or "b main" | |
9374 | without having to specify the package name, and allow lookups | |
9375 | of module.object to work in contexts that use the expression | |
9376 | parser. */ | |
9377 | ||
9378 | static void | |
9379 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9380 | { | |
421d1616 | 9381 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9382 | struct pending *list; |
9383 | int i; | |
9384 | ||
c24bdb02 | 9385 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9386 | list != NULL; |
9387 | list = list->next) | |
a766d390 DE |
9388 | { |
9389 | for (i = 0; i < list->nsyms; ++i) | |
9390 | { | |
9391 | struct symbol *sym = list->symbol[i]; | |
9392 | ||
c1b5c1eb | 9393 | if (sym->language () == language_go |
a766d390 DE |
9394 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9395 | { | |
421d1616 TT |
9396 | gdb::unique_xmalloc_ptr<char> this_package_name |
9397 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9398 | |
9399 | if (this_package_name == NULL) | |
9400 | continue; | |
9401 | if (package_name == NULL) | |
421d1616 | 9402 | package_name = std::move (this_package_name); |
a766d390 DE |
9403 | else |
9404 | { | |
5e22e966 | 9405 | struct objfile *objfile = cu->per_objfile->objfile; |
421d1616 | 9406 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9407 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9408 | (symbol_symtab (sym) != NULL |
9409 | ? symtab_to_filename_for_display | |
9410 | (symbol_symtab (sym)) | |
e3b94546 | 9411 | : objfile_name (objfile)), |
421d1616 | 9412 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9413 | } |
9414 | } | |
9415 | } | |
9416 | } | |
9417 | ||
9418 | if (package_name != NULL) | |
9419 | { | |
5e22e966 | 9420 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 9421 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9422 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9423 | saved_package_name); | |
a766d390 DE |
9424 | struct symbol *sym; |
9425 | ||
8c14c3a3 | 9426 | sym = new (&objfile->objfile_obstack) symbol; |
d3ecddab | 9427 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9428 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9429 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9430 | e.g., "main" finds the "main" module and not C's main(). */ | |
9431 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9432 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9433 | SYMBOL_TYPE (sym) = type; |
9434 | ||
c24bdb02 | 9435 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9436 | } |
9437 | } | |
9438 | ||
c9317f21 TT |
9439 | /* Allocate a fully-qualified name consisting of the two parts on the |
9440 | obstack. */ | |
9441 | ||
9442 | static const char * | |
9443 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9444 | { | |
9445 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9446 | } | |
9447 | ||
9c6a1327 TT |
9448 | /* A helper that allocates a variant part to attach to a Rust enum |
9449 | type. OBSTACK is where the results should be allocated. TYPE is | |
9450 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
57d02173 TT |
9451 | discriminant. It must be the index of one of the fields of TYPE, |
9452 | or -1 to mean there is no discriminant (univariant enum). | |
9c6a1327 TT |
9453 | DEFAULT_INDEX is the index of the default field; or -1 if there is |
9454 | no default. RANGES is indexed by "effective" field number (the | |
9455 | field index, but omitting the discriminant and default fields) and | |
9456 | must hold the discriminant values used by the variants. Note that | |
9457 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9458 | already allocated on it, or static. */ | |
c9317f21 | 9459 | |
9c6a1327 TT |
9460 | static void |
9461 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9462 | int discriminant_index, int default_index, | |
9463 | gdb::array_view<discriminant_range> ranges) | |
9464 | { | |
57d02173 TT |
9465 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. */ |
9466 | gdb_assert (discriminant_index == -1 | |
9467 | || (discriminant_index >= 0 | |
9468 | && discriminant_index < type->num_fields ())); | |
c9317f21 | 9469 | gdb_assert (default_index == -1 |
1f704f76 | 9470 | || (default_index >= 0 && default_index < type->num_fields ())); |
c9317f21 | 9471 | |
9c6a1327 | 9472 | /* We have one variant for each non-discriminant field. */ |
57d02173 TT |
9473 | int n_variants = type->num_fields (); |
9474 | if (discriminant_index != -1) | |
9475 | --n_variants; | |
c9317f21 | 9476 | |
9c6a1327 TT |
9477 | variant *variants = new (obstack) variant[n_variants]; |
9478 | int var_idx = 0; | |
9479 | int range_idx = 0; | |
1f704f76 | 9480 | for (int i = 0; i < type->num_fields (); ++i) |
9c6a1327 TT |
9481 | { |
9482 | if (i == discriminant_index) | |
9483 | continue; | |
c9317f21 | 9484 | |
9c6a1327 TT |
9485 | variants[var_idx].first_field = i; |
9486 | variants[var_idx].last_field = i + 1; | |
9487 | ||
9488 | /* The default field does not need a range, but other fields do. | |
9489 | We skipped the discriminant above. */ | |
9490 | if (i != default_index) | |
9491 | { | |
9492 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9493 | ++range_idx; | |
9494 | } | |
c9317f21 | 9495 | |
9c6a1327 TT |
9496 | ++var_idx; |
9497 | } | |
9498 | ||
9499 | gdb_assert (range_idx == ranges.size ()); | |
9500 | gdb_assert (var_idx == n_variants); | |
9501 | ||
9502 | variant_part *part = new (obstack) variant_part; | |
9503 | part->discriminant_index = discriminant_index; | |
57d02173 TT |
9504 | /* If there is no discriminant, then whether it is signed is of no |
9505 | consequence. */ | |
9506 | part->is_unsigned | |
9507 | = (discriminant_index == -1 | |
9508 | ? false | |
c6d940a9 | 9509 | : type->field (discriminant_index).type ()->is_unsigned ()); |
9c6a1327 TT |
9510 | part->variants = gdb::array_view<variant> (variants, n_variants); |
9511 | ||
9512 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9513 | gdb::array_view<variant_part> *prop_value | |
9514 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9515 | |
9c6a1327 | 9516 | struct dynamic_prop prop; |
8c2e4e06 | 9517 | prop.set_variant_parts (prop_value); |
9c6a1327 | 9518 | |
5c54719c | 9519 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
c9317f21 TT |
9520 | } |
9521 | ||
9522 | /* Some versions of rustc emitted enums in an unusual way. | |
9523 | ||
9524 | Ordinary enums were emitted as unions. The first element of each | |
9525 | structure in the union was named "RUST$ENUM$DISR". This element | |
9526 | held the discriminant. | |
9527 | ||
9528 | These versions of Rust also implemented the "non-zero" | |
9529 | optimization. When the enum had two values, and one is empty and | |
9530 | the other holds a pointer that cannot be zero, the pointer is used | |
9531 | as the discriminant, with a zero value meaning the empty variant. | |
9532 | Here, the union's first member is of the form | |
9533 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9534 | where the fieldnos are the indices of the fields that should be | |
9535 | traversed in order to find the field (which may be several fields deep) | |
9536 | and the variantname is the name of the variant of the case when the | |
9537 | field is zero. | |
9538 | ||
9539 | This function recognizes whether TYPE is of one of these forms, | |
9540 | and, if so, smashes it to be a variant type. */ | |
9541 | ||
9542 | static void | |
9543 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9544 | { | |
78134374 | 9545 | gdb_assert (type->code () == TYPE_CODE_UNION); |
c9317f21 TT |
9546 | |
9547 | /* We don't need to deal with empty enums. */ | |
1f704f76 | 9548 | if (type->num_fields () == 0) |
c9317f21 TT |
9549 | return; |
9550 | ||
9551 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
1f704f76 | 9552 | if (type->num_fields () == 1 |
c9317f21 TT |
9553 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) |
9554 | { | |
9555 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9556 | ||
9557 | /* Decode the field name to find the offset of the | |
9558 | discriminant. */ | |
9559 | ULONGEST bit_offset = 0; | |
940da03e | 9560 | struct type *field_type = type->field (0).type (); |
c9317f21 TT |
9561 | while (name[0] >= '0' && name[0] <= '9') |
9562 | { | |
9563 | char *tail; | |
9564 | unsigned long index = strtoul (name, &tail, 10); | |
9565 | name = tail; | |
9566 | if (*name != '$' | |
1f704f76 | 9567 | || index >= field_type->num_fields () |
c9317f21 TT |
9568 | || (TYPE_FIELD_LOC_KIND (field_type, index) |
9569 | != FIELD_LOC_KIND_BITPOS)) | |
9570 | { | |
b98664d3 | 9571 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9572 | "[in module %s]"), |
9573 | TYPE_FIELD_NAME (type, 0), | |
9574 | objfile_name (objfile)); | |
9575 | return; | |
9576 | } | |
9577 | ++name; | |
9578 | ||
9579 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
940da03e | 9580 | field_type = field_type->field (index).type (); |
c9317f21 TT |
9581 | } |
9582 | ||
9c6a1327 TT |
9583 | /* Smash this type to be a structure type. We have to do this |
9584 | because the type has already been recorded. */ | |
67607e24 | 9585 | type->set_code (TYPE_CODE_STRUCT); |
5e33d5f4 | 9586 | type->set_num_fields (3); |
9c6a1327 | 9587 | /* Save the field we care about. */ |
ceacbf6e | 9588 | struct field saved_field = type->field (0); |
3cabb6b0 SM |
9589 | type->set_fields |
9590 | ((struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field))); | |
c9317f21 | 9591 | |
9c6a1327 | 9592 | /* Put the discriminant at index 0. */ |
5d14b6e5 | 9593 | type->field (0).set_type (field_type); |
9c6a1327 TT |
9594 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9595 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
ceacbf6e | 9596 | SET_FIELD_BITPOS (type->field (0), bit_offset); |
c9317f21 TT |
9597 | |
9598 | /* The order of fields doesn't really matter, so put the real | |
9599 | field at index 1 and the data-less field at index 2. */ | |
ceacbf6e | 9600 | type->field (1) = saved_field; |
9c6a1327 | 9601 | TYPE_FIELD_NAME (type, 1) |
940da03e SM |
9602 | = rust_last_path_segment (type->field (1).type ()->name ()); |
9603 | type->field (1).type ()->set_name | |
7d93a1e0 | 9604 | (rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
d0e39ea2 | 9605 | TYPE_FIELD_NAME (type, 1))); |
c9317f21 TT |
9606 | |
9607 | const char *dataless_name | |
7d93a1e0 | 9608 | = rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
c9317f21 TT |
9609 | name); |
9610 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9611 | dataless_name); | |
5d14b6e5 | 9612 | type->field (2).set_type (dataless_type); |
c9317f21 TT |
9613 | /* NAME points into the original discriminant name, which |
9614 | already has the correct lifetime. */ | |
9c6a1327 | 9615 | TYPE_FIELD_NAME (type, 2) = name; |
ceacbf6e | 9616 | SET_FIELD_BITPOS (type->field (2), 0); |
c9317f21 | 9617 | |
9c6a1327 TT |
9618 | /* Indicate that this is a variant type. */ |
9619 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9620 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9621 | } |
77c2dba3 TT |
9622 | /* A union with a single anonymous field is probably an old-style |
9623 | univariant enum. */ | |
1f704f76 | 9624 | else if (type->num_fields () == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) |
c9317f21 | 9625 | { |
c9317f21 TT |
9626 | /* Smash this type to be a structure type. We have to do this |
9627 | because the type has already been recorded. */ | |
67607e24 | 9628 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9629 | |
940da03e | 9630 | struct type *field_type = type->field (0).type (); |
c9317f21 | 9631 | const char *variant_name |
7d93a1e0 | 9632 | = rust_last_path_segment (field_type->name ()); |
9c6a1327 | 9633 | TYPE_FIELD_NAME (type, 0) = variant_name; |
d0e39ea2 SM |
9634 | field_type->set_name |
9635 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9636 | type->name (), variant_name)); |
57d02173 TT |
9637 | |
9638 | alloc_rust_variant (&objfile->objfile_obstack, type, -1, 0, {}); | |
c9317f21 TT |
9639 | } |
9640 | else | |
9641 | { | |
9642 | struct type *disr_type = nullptr; | |
1f704f76 | 9643 | for (int i = 0; i < type->num_fields (); ++i) |
c9317f21 | 9644 | { |
940da03e | 9645 | disr_type = type->field (i).type (); |
c9317f21 | 9646 | |
78134374 | 9647 | if (disr_type->code () != TYPE_CODE_STRUCT) |
a037790e TT |
9648 | { |
9649 | /* All fields of a true enum will be structs. */ | |
9650 | return; | |
9651 | } | |
1f704f76 | 9652 | else if (disr_type->num_fields () == 0) |
c9317f21 TT |
9653 | { |
9654 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9655 | disr_type = nullptr; |
c9317f21 TT |
9656 | } |
9657 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9658 | "RUST$ENUM$DISR") != 0) | |
9659 | { | |
9660 | /* Not a Rust enum. */ | |
9661 | return; | |
9662 | } | |
9663 | else | |
9664 | { | |
9665 | /* Found one. */ | |
9666 | break; | |
9667 | } | |
9668 | } | |
9669 | ||
9670 | /* If we got here without a discriminant, then it's probably | |
9671 | just a union. */ | |
9672 | if (disr_type == nullptr) | |
9673 | return; | |
9674 | ||
9675 | /* Smash this type to be a structure type. We have to do this | |
9676 | because the type has already been recorded. */ | |
67607e24 | 9677 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9678 | |
9c6a1327 | 9679 | /* Make space for the discriminant field. */ |
ceacbf6e | 9680 | struct field *disr_field = &disr_type->field (0); |
9c6a1327 | 9681 | field *new_fields |
1f704f76 | 9682 | = (struct field *) TYPE_ZALLOC (type, ((type->num_fields () + 1) |
9c6a1327 | 9683 | * sizeof (struct field))); |
80fc5e77 | 9684 | memcpy (new_fields + 1, type->fields (), |
1f704f76 | 9685 | type->num_fields () * sizeof (struct field)); |
3cabb6b0 | 9686 | type->set_fields (new_fields); |
1f704f76 | 9687 | type->set_num_fields (type->num_fields () + 1); |
c9317f21 TT |
9688 | |
9689 | /* Install the discriminant at index 0 in the union. */ | |
ceacbf6e | 9690 | type->field (0) = *disr_field; |
9c6a1327 TT |
9691 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9692 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9693 | |
9694 | /* We need a way to find the correct discriminant given a | |
9695 | variant name. For convenience we build a map here. */ | |
b6cdac4b | 9696 | struct type *enum_type = disr_field->type (); |
c9317f21 | 9697 | std::unordered_map<std::string, ULONGEST> discriminant_map; |
1f704f76 | 9698 | for (int i = 0; i < enum_type->num_fields (); ++i) |
c9317f21 TT |
9699 | { |
9700 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9701 | { | |
9702 | const char *name | |
9703 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9704 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9705 | } | |
9706 | } | |
9707 | ||
1f704f76 | 9708 | int n_fields = type->num_fields (); |
9c6a1327 TT |
9709 | /* We don't need a range entry for the discriminant, but we do |
9710 | need one for every other field, as there is no default | |
9711 | variant. */ | |
9712 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9713 | discriminant_range, | |
9714 | n_fields - 1); | |
c9317f21 TT |
9715 | /* Skip the discriminant here. */ |
9716 | for (int i = 1; i < n_fields; ++i) | |
9717 | { | |
9718 | /* Find the final word in the name of this variant's type. | |
9719 | That name can be used to look up the correct | |
9720 | discriminant. */ | |
9721 | const char *variant_name | |
940da03e | 9722 | = rust_last_path_segment (type->field (i).type ()->name ()); |
c9317f21 TT |
9723 | |
9724 | auto iter = discriminant_map.find (variant_name); | |
9725 | if (iter != discriminant_map.end ()) | |
9c6a1327 | 9726 | { |
57d02173 TT |
9727 | ranges[i - 1].low = iter->second; |
9728 | ranges[i - 1].high = iter->second; | |
9c6a1327 | 9729 | } |
c9317f21 | 9730 | |
57d02173 TT |
9731 | /* In Rust, each element should have the size of the |
9732 | enclosing enum. */ | |
9733 | TYPE_LENGTH (type->field (i).type ()) = TYPE_LENGTH (type); | |
9734 | ||
bedda9ac | 9735 | /* Remove the discriminant field, if it exists. */ |
940da03e | 9736 | struct type *sub_type = type->field (i).type (); |
1f704f76 | 9737 | if (sub_type->num_fields () > 0) |
bedda9ac | 9738 | { |
5e33d5f4 | 9739 | sub_type->set_num_fields (sub_type->num_fields () - 1); |
3cabb6b0 | 9740 | sub_type->set_fields (sub_type->fields () + 1); |
bedda9ac | 9741 | } |
9c6a1327 | 9742 | TYPE_FIELD_NAME (type, i) = variant_name; |
d0e39ea2 SM |
9743 | sub_type->set_name |
9744 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9745 | type->name (), variant_name)); |
c9317f21 | 9746 | } |
9c6a1327 TT |
9747 | |
9748 | /* Indicate that this is a variant type. */ | |
a1520ad8 | 9749 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, -1, |
9c6a1327 TT |
9750 | gdb::array_view<discriminant_range> (ranges, |
9751 | n_fields - 1)); | |
c9317f21 TT |
9752 | } |
9753 | } | |
9754 | ||
9755 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9756 | ||
9757 | static void | |
9758 | rust_union_quirks (struct dwarf2_cu *cu) | |
9759 | { | |
9760 | gdb_assert (cu->language == language_rust); | |
52941706 | 9761 | for (type *type_ : cu->rust_unions) |
5e22e966 | 9762 | quirk_rust_enum (type_, cu->per_objfile->objfile); |
2d79090e TT |
9763 | /* We don't need this any more. */ |
9764 | cu->rust_unions.clear (); | |
c9317f21 TT |
9765 | } |
9766 | ||
8adb8487 TT |
9767 | /* See read.h. */ |
9768 | ||
9769 | type_unit_group_unshareable * | |
9770 | dwarf2_per_objfile::get_type_unit_group_unshareable (type_unit_group *tu_group) | |
9771 | { | |
9772 | auto iter = this->m_type_units.find (tu_group); | |
9773 | if (iter != this->m_type_units.end ()) | |
9774 | return iter->second.get (); | |
9775 | ||
9776 | type_unit_group_unshareable_up uniq (new type_unit_group_unshareable); | |
9777 | type_unit_group_unshareable *result = uniq.get (); | |
9778 | this->m_type_units[tu_group] = std::move (uniq); | |
9779 | return result; | |
9780 | } | |
9781 | ||
e286671b TT |
9782 | struct type * |
9783 | dwarf2_per_objfile::get_type_for_signatured_type | |
9784 | (signatured_type *sig_type) const | |
9785 | { | |
9786 | auto iter = this->m_type_map.find (sig_type); | |
9787 | if (iter == this->m_type_map.end ()) | |
9788 | return nullptr; | |
9789 | ||
9790 | return iter->second; | |
9791 | } | |
9792 | ||
9793 | void dwarf2_per_objfile::set_type_for_signatured_type | |
9794 | (signatured_type *sig_type, struct type *type) | |
9795 | { | |
9796 | gdb_assert (this->m_type_map.find (sig_type) == this->m_type_map.end ()); | |
9797 | ||
9798 | this->m_type_map[sig_type] = type; | |
9799 | } | |
9800 | ||
95554aad TT |
9801 | /* A helper function for computing the list of all symbol tables |
9802 | included by PER_CU. */ | |
9803 | ||
9804 | static void | |
4c39bc03 | 9805 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9806 | htab_t all_children, htab_t all_type_symtabs, |
43182c09 SM |
9807 | dwarf2_per_cu_data *per_cu, |
9808 | dwarf2_per_objfile *per_objfile, | |
43f3e411 | 9809 | struct compunit_symtab *immediate_parent) |
95554aad | 9810 | { |
af758d11 | 9811 | void **slot = htab_find_slot (all_children, per_cu, INSERT); |
95554aad TT |
9812 | if (*slot != NULL) |
9813 | { | |
9814 | /* This inclusion and its children have been processed. */ | |
9815 | return; | |
9816 | } | |
9817 | ||
9818 | *slot = per_cu; | |
af758d11 | 9819 | |
95554aad | 9820 | /* Only add a CU if it has a symbol table. */ |
43182c09 | 9821 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
43f3e411 | 9822 | if (cust != NULL) |
ec94af83 DE |
9823 | { |
9824 | /* If this is a type unit only add its symbol table if we haven't | |
9825 | seen it yet (type unit per_cu's can share symtabs). */ | |
9826 | if (per_cu->is_debug_types) | |
9827 | { | |
43f3e411 | 9828 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9829 | if (*slot == NULL) |
9830 | { | |
43f3e411 | 9831 | *slot = cust; |
4c39bc03 | 9832 | result->push_back (cust); |
43f3e411 DE |
9833 | if (cust->user == NULL) |
9834 | cust->user = immediate_parent; | |
ec94af83 DE |
9835 | } |
9836 | } | |
9837 | else | |
f9125b6c | 9838 | { |
4c39bc03 | 9839 | result->push_back (cust); |
43f3e411 DE |
9840 | if (cust->user == NULL) |
9841 | cust->user = immediate_parent; | |
f9125b6c | 9842 | } |
ec94af83 | 9843 | } |
95554aad | 9844 | |
ae640021 AB |
9845 | if (!per_cu->imported_symtabs_empty ()) |
9846 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9847 | { | |
9848 | recursively_compute_inclusions (result, all_children, | |
43182c09 SM |
9849 | all_type_symtabs, ptr, per_objfile, |
9850 | cust); | |
ae640021 | 9851 | } |
95554aad TT |
9852 | } |
9853 | ||
43f3e411 | 9854 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9855 | PER_CU. */ |
9856 | ||
9857 | static void | |
43182c09 SM |
9858 | compute_compunit_symtab_includes (dwarf2_per_cu_data *per_cu, |
9859 | dwarf2_per_objfile *per_objfile) | |
95554aad | 9860 | { |
f4dc4d17 DE |
9861 | gdb_assert (! per_cu->is_debug_types); |
9862 | ||
ae640021 | 9863 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9864 | { |
ae640021 | 9865 | int len; |
4c39bc03 | 9866 | std::vector<compunit_symtab *> result_symtabs; |
43182c09 | 9867 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
95554aad TT |
9868 | |
9869 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9870 | if (cust == NULL) |
95554aad TT |
9871 | return; |
9872 | ||
280a9412 TT |
9873 | htab_up all_children (htab_create_alloc (1, htab_hash_pointer, |
9874 | htab_eq_pointer, | |
9875 | NULL, xcalloc, xfree)); | |
9876 | htab_up all_type_symtabs (htab_create_alloc (1, htab_hash_pointer, | |
9877 | htab_eq_pointer, | |
9878 | NULL, xcalloc, xfree)); | |
95554aad | 9879 | |
ae640021 | 9880 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 | 9881 | { |
280a9412 TT |
9882 | recursively_compute_inclusions (&result_symtabs, all_children.get (), |
9883 | all_type_symtabs.get (), ptr, | |
9884 | per_objfile, cust); | |
ec94af83 | 9885 | } |
95554aad | 9886 | |
ec94af83 | 9887 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9888 | len = result_symtabs.size (); |
43f3e411 | 9889 | cust->includes |
f6e649dd | 9890 | = XOBNEWVEC (&per_objfile->objfile->objfile_obstack, |
8d749320 | 9891 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9892 | memcpy (cust->includes, result_symtabs.data (), |
9893 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9894 | cust->includes[len] = NULL; |
95554aad TT |
9895 | } |
9896 | } | |
9897 | ||
9898 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9899 | read. */ | |
9900 | ||
9901 | static void | |
976ca316 | 9902 | process_cu_includes (dwarf2_per_objfile *per_objfile) |
95554aad | 9903 | { |
976ca316 | 9904 | for (dwarf2_per_cu_data *iter : per_objfile->per_bfd->just_read_cus) |
f4dc4d17 DE |
9905 | { |
9906 | if (! iter->is_debug_types) | |
976ca316 | 9907 | compute_compunit_symtab_includes (iter, per_objfile); |
f4dc4d17 | 9908 | } |
95554aad | 9909 | |
976ca316 | 9910 | per_objfile->per_bfd->just_read_cus.clear (); |
95554aad TT |
9911 | } |
9912 | ||
8fc0b21d | 9913 | /* Generate full symbol information for CU, whose DIEs have |
10b3939b DJ |
9914 | already been loaded into memory. */ |
9915 | ||
9916 | static void | |
8fc0b21d | 9917 | process_full_comp_unit (dwarf2_cu *cu, enum language pretend_language) |
10b3939b | 9918 | { |
976ca316 SM |
9919 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9920 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 9921 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 9922 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9923 | struct compunit_symtab *cust; |
10b3939b | 9924 | CORE_ADDR baseaddr; |
4359dff1 | 9925 | struct block *static_block; |
3e29f34a | 9926 | CORE_ADDR addr; |
10b3939b | 9927 | |
b3b3bada | 9928 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9929 | |
c89b44cd TT |
9930 | /* Clear the list here in case something was left over. */ |
9931 | cu->method_list.clear (); | |
10b3939b | 9932 | |
95554aad TT |
9933 | cu->language = pretend_language; |
9934 | cu->language_defn = language_def (cu->language); | |
9935 | ||
1c47ec3e TV |
9936 | dwarf2_find_base_address (cu->dies, cu); |
9937 | ||
c906108c | 9938 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9939 | process_die (cu->dies, cu); |
c906108c | 9940 | |
a766d390 DE |
9941 | /* For now fudge the Go package. */ |
9942 | if (cu->language == language_go) | |
9943 | fixup_go_packaging (cu); | |
9944 | ||
5f48f8f3 | 9945 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9946 | should be complete, and it should now be safe to compute all of the |
9947 | physnames. */ | |
9948 | compute_delayed_physnames (cu); | |
3da10d80 | 9949 | |
c9317f21 TT |
9950 | if (cu->language == language_rust) |
9951 | rust_union_quirks (cu); | |
9952 | ||
fae299cd DC |
9953 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9954 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9955 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9956 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9957 | |
3e29f34a | 9958 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9959 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
9960 | |
9961 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
9962 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
9963 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
9964 | addrmap to help ensure it has an accurate map of pc values belonging to | |
9965 | this comp unit. */ | |
9966 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
9967 | ||
c24bdb02 | 9968 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
9969 | SECT_OFF_TEXT (objfile), |
9970 | 0); | |
c906108c | 9971 | |
43f3e411 | 9972 | if (cust != NULL) |
c906108c | 9973 | { |
df15bd07 | 9974 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 9975 | |
8be455d7 JK |
9976 | /* Set symtab language to language from DW_AT_language. If the |
9977 | compilation is from a C file generated by language preprocessors, do | |
9978 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 9979 | if (!(cu->language == language_c |
40e3ad0e | 9980 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 9981 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
9982 | |
9983 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
9984 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
9985 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
9986 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
9987 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
9988 | |
9989 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
9990 | needed, it would be wrong due to missing DW_AT_producer there. | |
9991 | ||
9992 | Still one can confuse GDB by using non-standard GCC compilation | |
9993 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 9994 | */ |
ab260dad | 9995 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 9996 | cust->locations_valid = 1; |
e0d00bc7 JK |
9997 | |
9998 | if (gcc_4_minor >= 5) | |
43f3e411 | 9999 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10000 | |
43f3e411 | 10001 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10002 | } |
9291a0cd | 10003 | |
976ca316 | 10004 | per_objfile->set_symtab (cu->per_cu, cust); |
c906108c | 10005 | |
95554aad | 10006 | /* Push it for inclusion processing later. */ |
976ca316 | 10007 | per_objfile->per_bfd->just_read_cus.push_back (cu->per_cu); |
804d2729 TT |
10008 | |
10009 | /* Not needed any more. */ | |
c24bdb02 | 10010 | cu->reset_builder (); |
f4dc4d17 | 10011 | } |
45cfd468 | 10012 | |
8fc0b21d | 10013 | /* Generate full symbol information for type unit CU, whose DIEs have |
f4dc4d17 DE |
10014 | already been loaded into memory. */ |
10015 | ||
10016 | static void | |
8fc0b21d | 10017 | process_full_type_unit (dwarf2_cu *cu, |
f4dc4d17 DE |
10018 | enum language pretend_language) |
10019 | { | |
976ca316 SM |
10020 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10021 | struct objfile *objfile = per_objfile->objfile; | |
43f3e411 | 10022 | struct compunit_symtab *cust; |
0186c6a7 DE |
10023 | struct signatured_type *sig_type; |
10024 | ||
8fc0b21d SM |
10025 | gdb_assert (cu->per_cu->is_debug_types); |
10026 | sig_type = (struct signatured_type *) cu->per_cu; | |
f4dc4d17 | 10027 | |
c89b44cd TT |
10028 | /* Clear the list here in case something was left over. */ |
10029 | cu->method_list.clear (); | |
f4dc4d17 | 10030 | |
f4dc4d17 DE |
10031 | cu->language = pretend_language; |
10032 | cu->language_defn = language_def (cu->language); | |
10033 | ||
10034 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10035 | process_die (cu->dies, cu); | |
10036 | ||
10037 | /* For now fudge the Go package. */ | |
10038 | if (cu->language == language_go) | |
10039 | fixup_go_packaging (cu); | |
10040 | ||
5f48f8f3 | 10041 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
10042 | should be complete, and it should now be safe to compute all of the |
10043 | physnames. */ | |
10044 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10045 | |
c9317f21 TT |
10046 | if (cu->language == language_rust) |
10047 | rust_union_quirks (cu); | |
10048 | ||
f4dc4d17 DE |
10049 | /* TUs share symbol tables. |
10050 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10051 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10052 | this TU's symbols to the existing symtab. */ | |
8adb8487 | 10053 | type_unit_group_unshareable *tug_unshare = |
976ca316 | 10054 | per_objfile->get_type_unit_group_unshareable (sig_type->type_unit_group); |
8adb8487 | 10055 | if (tug_unshare->compunit_symtab == NULL) |
45cfd468 | 10056 | { |
c24bdb02 KS |
10057 | buildsym_compunit *builder = cu->get_builder (); |
10058 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
8adb8487 | 10059 | tug_unshare->compunit_symtab = cust; |
f4dc4d17 | 10060 | |
43f3e411 | 10061 | if (cust != NULL) |
f4dc4d17 DE |
10062 | { |
10063 | /* Set symtab language to language from DW_AT_language. If the | |
10064 | compilation is from a C file generated by language preprocessors, | |
10065 | do not set the language if it was already deduced by | |
10066 | start_subfile. */ | |
43f3e411 DE |
10067 | if (!(cu->language == language_c |
10068 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10069 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10070 | } |
10071 | } | |
10072 | else | |
10073 | { | |
c24bdb02 | 10074 | cu->get_builder ()->augment_type_symtab (); |
8adb8487 | 10075 | cust = tug_unshare->compunit_symtab; |
f4dc4d17 DE |
10076 | } |
10077 | ||
976ca316 | 10078 | per_objfile->set_symtab (cu->per_cu, cust); |
804d2729 TT |
10079 | |
10080 | /* Not needed any more. */ | |
c24bdb02 | 10081 | cu->reset_builder (); |
c906108c SS |
10082 | } |
10083 | ||
95554aad TT |
10084 | /* Process an imported unit DIE. */ |
10085 | ||
10086 | static void | |
10087 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10088 | { | |
10089 | struct attribute *attr; | |
10090 | ||
f4dc4d17 DE |
10091 | /* For now we don't handle imported units in type units. */ |
10092 | if (cu->per_cu->is_debug_types) | |
10093 | { | |
10094 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10095 | " supported in type units [in module %s]"), | |
5e22e966 | 10096 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
10097 | } |
10098 | ||
95554aad TT |
10099 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10100 | if (attr != NULL) | |
10101 | { | |
0826b30a | 10102 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 | 10103 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
ab432490 | 10104 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9c541725 | 10105 | dwarf2_per_cu_data *per_cu |
ab432490 | 10106 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, per_objfile); |
95554aad | 10107 | |
58990295 TV |
10108 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
10109 | into another compilation unit, at root level. Regard this as a hint, | |
10110 | and ignore it. */ | |
10111 | if (die->parent && die->parent->parent == NULL | |
10112 | && per_cu->unit_type == DW_UT_compile | |
10113 | && per_cu->lang == language_cplus) | |
10114 | return; | |
10115 | ||
69d751e3 | 10116 | /* If necessary, add it to the queue and load its DIEs. */ |
120ce1b5 | 10117 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
4a636814 SM |
10118 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
10119 | false, cu->language); | |
95554aad | 10120 | |
ae640021 | 10121 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
10122 | } |
10123 | } | |
10124 | ||
4c8aa72d PA |
10125 | /* RAII object that represents a process_die scope: i.e., |
10126 | starts/finishes processing a DIE. */ | |
10127 | class process_die_scope | |
adde2bff | 10128 | { |
4c8aa72d PA |
10129 | public: |
10130 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10131 | : m_die (die), m_cu (cu) | |
10132 | { | |
10133 | /* We should only be processing DIEs not already in process. */ | |
10134 | gdb_assert (!m_die->in_process); | |
10135 | m_die->in_process = true; | |
10136 | } | |
8c3cb9fa | 10137 | |
4c8aa72d PA |
10138 | ~process_die_scope () |
10139 | { | |
10140 | m_die->in_process = false; | |
10141 | ||
10142 | /* If we're done processing the DIE for the CU that owns the line | |
10143 | header, we don't need the line header anymore. */ | |
10144 | if (m_cu->line_header_die_owner == m_die) | |
10145 | { | |
10146 | delete m_cu->line_header; | |
10147 | m_cu->line_header = NULL; | |
10148 | m_cu->line_header_die_owner = NULL; | |
10149 | } | |
10150 | } | |
10151 | ||
10152 | private: | |
10153 | die_info *m_die; | |
10154 | dwarf2_cu *m_cu; | |
10155 | }; | |
adde2bff | 10156 | |
c906108c SS |
10157 | /* Process a die and its children. */ |
10158 | ||
10159 | static void | |
e7c27a73 | 10160 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10161 | { |
4c8aa72d | 10162 | process_die_scope scope (die, cu); |
adde2bff | 10163 | |
c906108c SS |
10164 | switch (die->tag) |
10165 | { | |
10166 | case DW_TAG_padding: | |
10167 | break; | |
10168 | case DW_TAG_compile_unit: | |
95554aad | 10169 | case DW_TAG_partial_unit: |
e7c27a73 | 10170 | read_file_scope (die, cu); |
c906108c | 10171 | break; |
348e048f DE |
10172 | case DW_TAG_type_unit: |
10173 | read_type_unit_scope (die, cu); | |
10174 | break; | |
c906108c | 10175 | case DW_TAG_subprogram: |
0a4b0913 AB |
10176 | /* Nested subprograms in Fortran get a prefix. */ |
10177 | if (cu->language == language_fortran | |
10178 | && die->parent != NULL | |
10179 | && die->parent->tag == DW_TAG_subprogram) | |
10180 | cu->processing_has_namespace_info = true; | |
10181 | /* Fall through. */ | |
c906108c | 10182 | case DW_TAG_inlined_subroutine: |
edb3359d | 10183 | read_func_scope (die, cu); |
c906108c SS |
10184 | break; |
10185 | case DW_TAG_lexical_block: | |
14898363 L |
10186 | case DW_TAG_try_block: |
10187 | case DW_TAG_catch_block: | |
e7c27a73 | 10188 | read_lexical_block_scope (die, cu); |
c906108c | 10189 | break; |
216f72a1 | 10190 | case DW_TAG_call_site: |
96408a79 SA |
10191 | case DW_TAG_GNU_call_site: |
10192 | read_call_site_scope (die, cu); | |
10193 | break; | |
c906108c | 10194 | case DW_TAG_class_type: |
680b30c7 | 10195 | case DW_TAG_interface_type: |
c906108c SS |
10196 | case DW_TAG_structure_type: |
10197 | case DW_TAG_union_type: | |
134d01f1 | 10198 | process_structure_scope (die, cu); |
c906108c SS |
10199 | break; |
10200 | case DW_TAG_enumeration_type: | |
134d01f1 | 10201 | process_enumeration_scope (die, cu); |
c906108c | 10202 | break; |
134d01f1 | 10203 | |
f792889a DJ |
10204 | /* These dies have a type, but processing them does not create |
10205 | a symbol or recurse to process the children. Therefore we can | |
10206 | read them on-demand through read_type_die. */ | |
c906108c | 10207 | case DW_TAG_subroutine_type: |
72019c9c | 10208 | case DW_TAG_set_type: |
c906108c | 10209 | case DW_TAG_pointer_type: |
c906108c | 10210 | case DW_TAG_ptr_to_member_type: |
c906108c | 10211 | case DW_TAG_reference_type: |
4297a3f0 | 10212 | case DW_TAG_rvalue_reference_type: |
c906108c | 10213 | case DW_TAG_string_type: |
c906108c | 10214 | break; |
134d01f1 | 10215 | |
d8f62e84 TT |
10216 | case DW_TAG_array_type: |
10217 | /* We only need to handle this case for Ada -- in other | |
10218 | languages, it's normal for the compiler to emit a typedef | |
10219 | instead. */ | |
10220 | if (cu->language != language_ada) | |
10221 | break; | |
10222 | /* FALLTHROUGH */ | |
c906108c | 10223 | case DW_TAG_base_type: |
a02abb62 | 10224 | case DW_TAG_subrange_type: |
cb249c71 | 10225 | case DW_TAG_typedef: |
134d01f1 | 10226 | /* Add a typedef symbol for the type definition, if it has a |
dda83cd7 | 10227 | DW_AT_name. */ |
f792889a | 10228 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10229 | break; |
c906108c | 10230 | case DW_TAG_common_block: |
e7c27a73 | 10231 | read_common_block (die, cu); |
c906108c SS |
10232 | break; |
10233 | case DW_TAG_common_inclusion: | |
10234 | break; | |
d9fa45fe | 10235 | case DW_TAG_namespace: |
9068261f | 10236 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10237 | read_namespace (die, cu); |
d9fa45fe | 10238 | break; |
5d7cb8df | 10239 | case DW_TAG_module: |
9068261f | 10240 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10241 | read_module (die, cu); |
10242 | break; | |
d9fa45fe | 10243 | case DW_TAG_imported_declaration: |
9068261f | 10244 | cu->processing_has_namespace_info = true; |
74921315 KS |
10245 | if (read_namespace_alias (die, cu)) |
10246 | break; | |
86a73007 TT |
10247 | /* The declaration is not a global namespace alias. */ |
10248 | /* Fall through. */ | |
d9fa45fe | 10249 | case DW_TAG_imported_module: |
9068261f | 10250 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10251 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10252 | || cu->language != language_fortran)) | |
b98664d3 | 10253 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10254 | dwarf_tag_name (die->tag)); |
10255 | read_import_statement (die, cu); | |
d9fa45fe | 10256 | break; |
95554aad TT |
10257 | |
10258 | case DW_TAG_imported_unit: | |
10259 | process_imported_unit_die (die, cu); | |
10260 | break; | |
10261 | ||
71a3c369 TT |
10262 | case DW_TAG_variable: |
10263 | read_variable (die, cu); | |
10264 | break; | |
10265 | ||
c906108c | 10266 | default: |
e7c27a73 | 10267 | new_symbol (die, NULL, cu); |
c906108c SS |
10268 | break; |
10269 | } | |
10270 | } | |
ca69b9e6 DE |
10271 | \f |
10272 | /* DWARF name computation. */ | |
c906108c | 10273 | |
94af9270 KS |
10274 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10275 | needs to have the name of the scope prepended to the name listed in the | |
10276 | die. */ | |
10277 | ||
10278 | static int | |
10279 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10280 | { | |
1c809c68 TT |
10281 | struct attribute *attr; |
10282 | ||
94af9270 KS |
10283 | switch (die->tag) |
10284 | { | |
10285 | case DW_TAG_namespace: | |
10286 | case DW_TAG_typedef: | |
10287 | case DW_TAG_class_type: | |
10288 | case DW_TAG_interface_type: | |
10289 | case DW_TAG_structure_type: | |
10290 | case DW_TAG_union_type: | |
10291 | case DW_TAG_enumeration_type: | |
10292 | case DW_TAG_enumerator: | |
10293 | case DW_TAG_subprogram: | |
08a76f8a | 10294 | case DW_TAG_inlined_subroutine: |
94af9270 | 10295 | case DW_TAG_member: |
74921315 | 10296 | case DW_TAG_imported_declaration: |
94af9270 KS |
10297 | return 1; |
10298 | ||
10299 | case DW_TAG_variable: | |
c2b0a229 | 10300 | case DW_TAG_constant: |
94af9270 KS |
10301 | /* We only need to prefix "globally" visible variables. These include |
10302 | any variable marked with DW_AT_external or any variable that | |
10303 | lives in a namespace. [Variables in anonymous namespaces | |
10304 | require prefixing, but they are not DW_AT_external.] */ | |
10305 | ||
10306 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10307 | { | |
10308 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10309 | |
94af9270 KS |
10310 | return die_needs_namespace (die_specification (die, &spec_cu), |
10311 | spec_cu); | |
10312 | } | |
10313 | ||
1c809c68 | 10314 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10315 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10316 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10317 | return 0; |
10318 | /* A variable in a lexical block of some kind does not need a | |
10319 | namespace, even though in C++ such variables may be external | |
10320 | and have a mangled name. */ | |
10321 | if (die->parent->tag == DW_TAG_lexical_block | |
10322 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10323 | || die->parent->tag == DW_TAG_catch_block |
10324 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10325 | return 0; |
10326 | return 1; | |
94af9270 KS |
10327 | |
10328 | default: | |
10329 | return 0; | |
10330 | } | |
10331 | } | |
10332 | ||
73b9be8b KS |
10333 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10334 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10335 | defined for the given DIE. */ | |
10336 | ||
10337 | static struct attribute * | |
10338 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10339 | { | |
10340 | struct attribute *attr; | |
10341 | ||
10342 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10343 | if (attr == NULL) | |
10344 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10345 | ||
10346 | return attr; | |
10347 | } | |
10348 | ||
10349 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10350 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10351 | defined for the given DIE. */ | |
10352 | ||
10353 | static const char * | |
10354 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10355 | { | |
10356 | const char *linkage_name; | |
10357 | ||
10358 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10359 | if (linkage_name == NULL) | |
10360 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10361 | ||
787de330 TT |
10362 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10363 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10364 | if (cu->language == language_rust && linkage_name != NULL | |
10365 | && strchr (linkage_name, '{') != NULL) | |
10366 | linkage_name = NULL; | |
10367 | ||
73b9be8b KS |
10368 | return linkage_name; |
10369 | } | |
10370 | ||
94af9270 | 10371 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10372 | compute the physname for the object, which include a method's: |
9c37b5ae | 10373 | - formal parameters (C++), |
a766d390 | 10374 | - receiver type (Go), |
a766d390 DE |
10375 | |
10376 | The term "physname" is a bit confusing. | |
10377 | For C++, for example, it is the demangled name. | |
10378 | For Go, for example, it's the mangled name. | |
94af9270 | 10379 | |
af6b7be1 JB |
10380 | For Ada, return the DIE's linkage name rather than the fully qualified |
10381 | name. PHYSNAME is ignored.. | |
10382 | ||
5989a64e | 10383 | The result is allocated on the objfile->per_bfd's obstack and |
45940949 | 10384 | canonicalized. */ |
94af9270 KS |
10385 | |
10386 | static const char * | |
15d034d0 TT |
10387 | dwarf2_compute_name (const char *name, |
10388 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10389 | int physname) |
10390 | { | |
5e22e966 | 10391 | struct objfile *objfile = cu->per_objfile->objfile; |
bb5ed363 | 10392 | |
94af9270 KS |
10393 | if (name == NULL) |
10394 | name = dwarf2_name (die, cu); | |
10395 | ||
2ee7123e DE |
10396 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10397 | but otherwise compute it by typename_concat inside GDB. | |
10398 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10399 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10400 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10401 | will set the demangled name to the result of dwarf2_full_name, and it is |
10402 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10403 | if (cu->language == language_ada |
10404 | || (cu->language == language_fortran && physname)) | |
10405 | { | |
10406 | /* For Ada unit, we prefer the linkage name over the name, as | |
10407 | the former contains the exported name, which the user expects | |
10408 | to be able to reference. Ideally, we want the user to be able | |
10409 | to reference this entity using either natural or linkage name, | |
10410 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10411 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10412 | |
2ee7123e DE |
10413 | if (linkage_name != NULL) |
10414 | return linkage_name; | |
f55ee35c JK |
10415 | } |
10416 | ||
94af9270 KS |
10417 | /* These are the only languages we know how to qualify names in. */ |
10418 | if (name != NULL | |
9c37b5ae | 10419 | && (cu->language == language_cplus |
c44af4eb TT |
10420 | || cu->language == language_fortran || cu->language == language_d |
10421 | || cu->language == language_rust)) | |
94af9270 KS |
10422 | { |
10423 | if (die_needs_namespace (die, cu)) | |
10424 | { | |
0d5cff50 | 10425 | const char *prefix; |
34a68019 | 10426 | const char *canonical_name = NULL; |
94af9270 | 10427 | |
d7e74731 PA |
10428 | string_file buf; |
10429 | ||
94af9270 | 10430 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10431 | if (*prefix != '\0') |
10432 | { | |
43816ebc TT |
10433 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10434 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10435 | |
43816ebc | 10436 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10437 | } |
10438 | else | |
d7e74731 | 10439 | buf.puts (name); |
94af9270 | 10440 | |
98bfdba5 PA |
10441 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10442 | as children with DW_TAG_template_type_param or | |
10443 | DW_TAG_value_type_param. If the latter, add them to the name | |
10444 | here. If the name already has template parameters, then | |
10445 | skip this step; some versions of GCC emit both, and | |
10446 | it is more efficient to use the pre-computed name. | |
10447 | ||
10448 | Something to keep in mind about this process: it is very | |
10449 | unlikely, or in some cases downright impossible, to produce | |
10450 | something that will match the mangled name of a function. | |
10451 | If the definition of the function has the same debug info, | |
10452 | we should be able to match up with it anyway. But fallbacks | |
10453 | using the minimal symbol, for instance to find a method | |
10454 | implemented in a stripped copy of libstdc++, will not work. | |
10455 | If we do not have debug info for the definition, we will have to | |
10456 | match them up some other way. | |
10457 | ||
10458 | When we do name matching there is a related problem with function | |
10459 | templates; two instantiated function templates are allowed to | |
10460 | differ only by their return types, which we do not add here. */ | |
10461 | ||
10462 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10463 | { | |
10464 | struct attribute *attr; | |
10465 | struct die_info *child; | |
10466 | int first = 1; | |
10467 | ||
10468 | die->building_fullname = 1; | |
10469 | ||
10470 | for (child = die->child; child != NULL; child = child->sibling) | |
10471 | { | |
10472 | struct type *type; | |
12df843f | 10473 | LONGEST value; |
d521ce57 | 10474 | const gdb_byte *bytes; |
98bfdba5 PA |
10475 | struct dwarf2_locexpr_baton *baton; |
10476 | struct value *v; | |
10477 | ||
10478 | if (child->tag != DW_TAG_template_type_param | |
10479 | && child->tag != DW_TAG_template_value_param) | |
10480 | continue; | |
10481 | ||
10482 | if (first) | |
10483 | { | |
d7e74731 | 10484 | buf.puts ("<"); |
98bfdba5 PA |
10485 | first = 0; |
10486 | } | |
10487 | else | |
d7e74731 | 10488 | buf.puts (", "); |
98bfdba5 PA |
10489 | |
10490 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10491 | if (attr == NULL) | |
10492 | { | |
b98664d3 | 10493 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10494 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10495 | continue; |
10496 | } | |
10497 | type = die_type (child, cu); | |
10498 | ||
10499 | if (child->tag == DW_TAG_template_type_param) | |
10500 | { | |
c1ec8cea TT |
10501 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10502 | &type_print_raw_options); | |
98bfdba5 PA |
10503 | continue; |
10504 | } | |
10505 | ||
10506 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10507 | if (attr == NULL) | |
10508 | { | |
b98664d3 | 10509 | complaint (_("template parameter missing " |
3e43a32a | 10510 | "DW_AT_const_value")); |
d7e74731 | 10511 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10512 | continue; |
10513 | } | |
10514 | ||
10515 | dwarf2_const_value_attr (attr, type, name, | |
10516 | &cu->comp_unit_obstack, cu, | |
10517 | &value, &bytes, &baton); | |
10518 | ||
20ce4123 | 10519 | if (type->has_no_signedness ()) |
98bfdba5 PA |
10520 | /* GDB prints characters as NUMBER 'CHAR'. If that's |
10521 | changed, this can use value_print instead. */ | |
d7e74731 | 10522 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10523 | else |
10524 | { | |
10525 | struct value_print_options opts; | |
10526 | ||
10527 | if (baton != NULL) | |
10528 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10529 | baton->data, | |
10530 | baton->size, | |
9f47c707 SM |
10531 | baton->per_cu, |
10532 | baton->per_objfile); | |
98bfdba5 PA |
10533 | else if (bytes != NULL) |
10534 | { | |
10535 | v = allocate_value (type); | |
10536 | memcpy (value_contents_writeable (v), bytes, | |
10537 | TYPE_LENGTH (type)); | |
10538 | } | |
10539 | else | |
10540 | v = value_from_longest (type, value); | |
10541 | ||
3e43a32a MS |
10542 | /* Specify decimal so that we do not depend on |
10543 | the radix. */ | |
98bfdba5 PA |
10544 | get_formatted_print_options (&opts, 'd'); |
10545 | opts.raw = 1; | |
d7e74731 | 10546 | value_print (v, &buf, &opts); |
98bfdba5 | 10547 | release_value (v); |
98bfdba5 PA |
10548 | } |
10549 | } | |
10550 | ||
10551 | die->building_fullname = 0; | |
10552 | ||
10553 | if (!first) | |
10554 | { | |
10555 | /* Close the argument list, with a space if necessary | |
10556 | (nested templates). */ | |
d7e74731 PA |
10557 | if (!buf.empty () && buf.string ().back () == '>') |
10558 | buf.puts (" >"); | |
98bfdba5 | 10559 | else |
d7e74731 | 10560 | buf.puts (">"); |
98bfdba5 PA |
10561 | } |
10562 | } | |
10563 | ||
9c37b5ae | 10564 | /* For C++ methods, append formal parameter type |
94af9270 | 10565 | information, if PHYSNAME. */ |
6e70227d | 10566 | |
94af9270 | 10567 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10568 | && cu->language == language_cplus) |
94af9270 KS |
10569 | { |
10570 | struct type *type = read_type_die (die, cu); | |
10571 | ||
d7e74731 | 10572 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10573 | &type_print_raw_options); |
94af9270 | 10574 | |
9c37b5ae | 10575 | if (cu->language == language_cplus) |
94af9270 | 10576 | { |
60430eff DJ |
10577 | /* Assume that an artificial first parameter is |
10578 | "this", but do not crash if it is not. RealView | |
10579 | marks unnamed (and thus unused) parameters as | |
10580 | artificial; there is no way to differentiate | |
10581 | the two cases. */ | |
1f704f76 | 10582 | if (type->num_fields () > 0 |
94af9270 | 10583 | && TYPE_FIELD_ARTIFICIAL (type, 0) |
940da03e SM |
10584 | && type->field (0).type ()->code () == TYPE_CODE_PTR |
10585 | && TYPE_CONST (TYPE_TARGET_TYPE (type->field (0).type ()))) | |
d7e74731 | 10586 | buf.puts (" const"); |
94af9270 KS |
10587 | } |
10588 | } | |
10589 | ||
d7e74731 | 10590 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10591 | |
10592 | if (cu->language == language_cplus) | |
34a68019 | 10593 | canonical_name |
322a8516 | 10594 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10595 | objfile); |
34a68019 TT |
10596 | |
10597 | /* If we only computed INTERMEDIATE_NAME, or if | |
10598 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10599 | intern it. */ |
322a8516 | 10600 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10601 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10602 | else |
10603 | name = canonical_name; | |
94af9270 KS |
10604 | } |
10605 | } | |
10606 | ||
10607 | return name; | |
10608 | } | |
10609 | ||
0114d602 DJ |
10610 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10611 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10612 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10613 | not have a name. NAME may either be from a previous call to |
10614 | dwarf2_name or NULL. | |
10615 | ||
9c37b5ae | 10616 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10617 | |
10618 | static const char * | |
15d034d0 | 10619 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10620 | { |
94af9270 KS |
10621 | return dwarf2_compute_name (name, die, cu, 0); |
10622 | } | |
0114d602 | 10623 | |
94af9270 KS |
10624 | /* Construct a physname for the given DIE in CU. NAME may either be |
10625 | from a previous call to dwarf2_name or NULL. The result will be | |
10626 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10627 | name. | |
0114d602 | 10628 | |
9c37b5ae | 10629 | The output string will be canonicalized (if C++). */ |
0114d602 | 10630 | |
94af9270 | 10631 | static const char * |
15d034d0 | 10632 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10633 | { |
5e22e966 | 10634 | struct objfile *objfile = cu->per_objfile->objfile; |
900e11f9 | 10635 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10636 | int need_copy = 1; |
10637 | ||
10638 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10639 | on its own. */ | |
10640 | if (!die_needs_namespace (die, cu)) | |
10641 | return dwarf2_compute_name (name, die, cu, 1); | |
10642 | ||
906bb4c5 TT |
10643 | if (cu->language != language_rust) |
10644 | mangled = dw2_linkage_name (die, cu); | |
900e11f9 JK |
10645 | |
10646 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10647 | has computed. */ | |
791afaa2 | 10648 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10649 | if (mangled != NULL) |
900e11f9 | 10650 | { |
900e11f9 | 10651 | |
d3355e4d | 10652 | if (language_def (cu->language)->store_sym_names_in_linkage_form_p ()) |
59cc4834 JB |
10653 | { |
10654 | /* Do nothing (do not demangle the symbol name). */ | |
10655 | } | |
a766d390 DE |
10656 | else |
10657 | { | |
0eb876f5 JB |
10658 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10659 | their return type. It is easier for GDB users to search | |
10660 | for such functions as `name(params)' than `long name(params)'. | |
10661 | In such case the minimal symbol names do not match the full | |
10662 | symbol names but for template functions there is never a need | |
10663 | to look up their definition from their declaration so | |
10664 | the only disadvantage remains the minimal symbol variant | |
10665 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10666 | demangled.reset (gdb_demangle (mangled, |
10667 | (DMGL_PARAMS | DMGL_ANSI | |
10668 | | DMGL_RET_DROP))); | |
a766d390 | 10669 | } |
900e11f9 | 10670 | if (demangled) |
791afaa2 | 10671 | canon = demangled.get (); |
900e11f9 JK |
10672 | else |
10673 | { | |
10674 | canon = mangled; | |
10675 | need_copy = 0; | |
10676 | } | |
10677 | } | |
10678 | ||
10679 | if (canon == NULL || check_physname) | |
10680 | { | |
10681 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10682 | ||
10683 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10684 | { | |
10685 | /* It may not mean a bug in GDB. The compiler could also | |
10686 | compute DW_AT_linkage_name incorrectly. But in such case | |
10687 | GDB would need to be bug-to-bug compatible. */ | |
10688 | ||
b98664d3 | 10689 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10690 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10691 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10692 | objfile_name (objfile)); |
900e11f9 JK |
10693 | |
10694 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10695 | is available here - over computed PHYSNAME. It is safer | |
10696 | against both buggy GDB and buggy compilers. */ | |
10697 | ||
10698 | retval = canon; | |
10699 | } | |
10700 | else | |
10701 | { | |
10702 | retval = physname; | |
10703 | need_copy = 0; | |
10704 | } | |
10705 | } | |
10706 | else | |
10707 | retval = canon; | |
10708 | ||
10709 | if (need_copy) | |
be1e3d3e | 10710 | retval = objfile->intern (retval); |
900e11f9 | 10711 | |
900e11f9 | 10712 | return retval; |
0114d602 DJ |
10713 | } |
10714 | ||
74921315 KS |
10715 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10716 | a new symbol for it. | |
10717 | ||
10718 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10719 | ||
10720 | static int | |
10721 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10722 | { | |
10723 | struct attribute *attr; | |
10724 | ||
10725 | /* If the die does not have a name, this is not a namespace | |
10726 | alias. */ | |
10727 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10728 | if (attr != NULL) | |
10729 | { | |
10730 | int num; | |
10731 | struct die_info *d = die; | |
10732 | struct dwarf2_cu *imported_cu = cu; | |
10733 | ||
10734 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10735 | keep inspecting DIEs until we hit the underlying import. */ | |
10736 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10737 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10738 | { | |
10739 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10740 | if (attr == NULL) | |
10741 | break; | |
10742 | ||
10743 | d = follow_die_ref (d, attr, &imported_cu); | |
10744 | if (d->tag != DW_TAG_imported_declaration) | |
10745 | break; | |
10746 | } | |
10747 | ||
10748 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10749 | { | |
b98664d3 | 10750 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10751 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10752 | return 0; |
10753 | } | |
10754 | ||
10755 | if (attr != NULL) | |
10756 | { | |
10757 | struct type *type; | |
0826b30a | 10758 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10759 | |
aa66c379 | 10760 | type = get_die_type_at_offset (sect_off, cu->per_cu, cu->per_objfile); |
78134374 | 10761 | if (type != NULL && type->code () == TYPE_CODE_NAMESPACE) |
74921315 KS |
10762 | { |
10763 | /* This declaration is a global namespace alias. Add | |
10764 | a symbol for it whose type is the aliased namespace. */ | |
10765 | new_symbol (die, type, cu); | |
10766 | return 1; | |
10767 | } | |
10768 | } | |
10769 | } | |
10770 | ||
10771 | return 0; | |
10772 | } | |
10773 | ||
22cee43f | 10774 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10775 | current context for CU. |
22cee43f PMR |
10776 | |
10777 | For Ada, imported declarations can materialize renamings, which *may* be | |
10778 | global. However it is impossible (for now?) in DWARF to distinguish | |
10779 | "external" imported declarations and "static" ones. As all imported | |
10780 | declarations seem to be static in all other languages, make them all CU-wide | |
10781 | global only in Ada. */ | |
10782 | ||
10783 | static struct using_direct ** | |
804d2729 | 10784 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10785 | { |
c24bdb02 KS |
10786 | if (cu->language == language_ada |
10787 | && cu->get_builder ()->outermost_context_p ()) | |
10788 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10789 | else |
c24bdb02 | 10790 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10791 | } |
10792 | ||
27aa8d6a SW |
10793 | /* Read the import statement specified by the given die and record it. */ |
10794 | ||
10795 | static void | |
10796 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10797 | { | |
5e22e966 | 10798 | struct objfile *objfile = cu->per_objfile->objfile; |
27aa8d6a | 10799 | struct attribute *import_attr; |
32019081 | 10800 | struct die_info *imported_die, *child_die; |
de4affc9 | 10801 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10802 | const char *imported_name; |
794684b6 | 10803 | const char *imported_name_prefix; |
13387711 SW |
10804 | const char *canonical_name; |
10805 | const char *import_alias; | |
10806 | const char *imported_declaration = NULL; | |
794684b6 | 10807 | const char *import_prefix; |
eb1e02fd | 10808 | std::vector<const char *> excludes; |
13387711 | 10809 | |
27aa8d6a SW |
10810 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10811 | if (import_attr == NULL) | |
10812 | { | |
b98664d3 | 10813 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10814 | dwarf_tag_name (die->tag)); |
10815 | return; | |
10816 | } | |
10817 | ||
de4affc9 CC |
10818 | imported_cu = cu; |
10819 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10820 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10821 | if (imported_name == NULL) |
10822 | { | |
10823 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10824 | ||
dda83cd7 SM |
10825 | The import in the following code: |
10826 | namespace A | |
10827 | { | |
10828 | typedef int B; | |
10829 | } | |
10830 | ||
10831 | int main () | |
10832 | { | |
10833 | using A::B; | |
10834 | B b; | |
10835 | return b; | |
10836 | } | |
10837 | ||
10838 | ... | |
10839 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10840 | <52> DW_AT_decl_file : 1 | |
10841 | <53> DW_AT_decl_line : 6 | |
10842 | <54> DW_AT_import : <0x75> | |
10843 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10844 | <59> DW_AT_name : B | |
10845 | <5b> DW_AT_decl_file : 1 | |
10846 | <5c> DW_AT_decl_line : 2 | |
10847 | <5d> DW_AT_type : <0x6e> | |
10848 | ... | |
10849 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10850 | <76> DW_AT_byte_size : 4 | |
10851 | <77> DW_AT_encoding : 5 (signed) | |
10852 | ||
10853 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10854 | This case will be ignored until the gcc bug is fixed. */ | |
27aa8d6a SW |
10855 | return; |
10856 | } | |
10857 | ||
82856980 SW |
10858 | /* Figure out the local name after import. */ |
10859 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10860 | |
794684b6 SW |
10861 | /* Figure out where the statement is being imported to. */ |
10862 | import_prefix = determine_prefix (die, cu); | |
10863 | ||
10864 | /* Figure out what the scope of the imported die is and prepend it | |
10865 | to the name of the imported die. */ | |
de4affc9 | 10866 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10867 | |
f55ee35c JK |
10868 | if (imported_die->tag != DW_TAG_namespace |
10869 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10870 | { |
13387711 SW |
10871 | imported_declaration = imported_name; |
10872 | canonical_name = imported_name_prefix; | |
794684b6 | 10873 | } |
13387711 | 10874 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10875 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10876 | imported_name_prefix, |
10877 | (cu->language == language_d ? "." : "::"), | |
10878 | imported_name, (char *) NULL); | |
13387711 SW |
10879 | else |
10880 | canonical_name = imported_name; | |
794684b6 | 10881 | |
32019081 JK |
10882 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10883 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10884 | child_die = child_die->sibling) |
32019081 JK |
10885 | { |
10886 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10887 | represented by an imported module entry with an import attribute | |
10888 | referring to the module and owned entries corresponding to those | |
10889 | entities that are renamed as part of being imported. */ | |
10890 | ||
10891 | if (child_die->tag != DW_TAG_imported_declaration) | |
10892 | { | |
b98664d3 | 10893 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10894 | "- DIE at %s [in module %s]"), |
10895 | sect_offset_str (child_die->sect_off), | |
10896 | objfile_name (objfile)); | |
32019081 JK |
10897 | continue; |
10898 | } | |
10899 | ||
10900 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10901 | if (import_attr == NULL) | |
10902 | { | |
b98664d3 | 10903 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10904 | dwarf_tag_name (child_die->tag)); |
10905 | continue; | |
10906 | } | |
10907 | ||
10908 | imported_cu = cu; | |
10909 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10910 | &imported_cu); | |
10911 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10912 | if (imported_name == NULL) | |
10913 | { | |
b98664d3 | 10914 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10915 | "imported name - DIE at %s [in module %s]"), |
10916 | sect_offset_str (child_die->sect_off), | |
10917 | objfile_name (objfile)); | |
32019081 JK |
10918 | continue; |
10919 | } | |
10920 | ||
eb1e02fd | 10921 | excludes.push_back (imported_name); |
32019081 JK |
10922 | |
10923 | process_die (child_die, cu); | |
10924 | } | |
10925 | ||
804d2729 | 10926 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10927 | import_prefix, |
10928 | canonical_name, | |
10929 | import_alias, | |
10930 | imported_declaration, | |
10931 | excludes, | |
10932 | 0, | |
10933 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10934 | } |
10935 | ||
5230b05a WT |
10936 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10937 | types, but gives them a size of zero. Starting with version 14, | |
10938 | ICC is compatible with GCC. */ | |
10939 | ||
9068261f | 10940 | static bool |
5230b05a WT |
10941 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10942 | { | |
10943 | if (!cu->checked_producer) | |
10944 | check_producer (cu); | |
10945 | ||
10946 | return cu->producer_is_icc_lt_14; | |
10947 | } | |
10948 | ||
eb77c9df AB |
10949 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10950 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10951 | which says that void functions should not have a DW_AT_type. */ | |
10952 | ||
10953 | static bool | |
10954 | producer_is_icc (struct dwarf2_cu *cu) | |
10955 | { | |
10956 | if (!cu->checked_producer) | |
10957 | check_producer (cu); | |
10958 | ||
10959 | return cu->producer_is_icc; | |
10960 | } | |
10961 | ||
1b80a9fa JK |
10962 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
10963 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
10964 | this, it was first present in GCC release 4.3.0. */ | |
10965 | ||
9068261f | 10966 | static bool |
1b80a9fa JK |
10967 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
10968 | { | |
10969 | if (!cu->checked_producer) | |
10970 | check_producer (cu); | |
10971 | ||
10972 | return cu->producer_is_gcc_lt_4_3; | |
10973 | } | |
10974 | ||
d721ba37 PA |
10975 | static file_and_directory |
10976 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 10977 | { |
d721ba37 PA |
10978 | file_and_directory res; |
10979 | ||
9291a0cd TT |
10980 | /* Find the filename. Do not use dwarf2_name here, since the filename |
10981 | is not a source language identifier. */ | |
d721ba37 PA |
10982 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
10983 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 10984 | |
d721ba37 PA |
10985 | if (res.comp_dir == NULL |
10986 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
10987 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 10988 | { |
d721ba37 PA |
10989 | res.comp_dir_storage = ldirname (res.name); |
10990 | if (!res.comp_dir_storage.empty ()) | |
10991 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 10992 | } |
d721ba37 | 10993 | if (res.comp_dir != NULL) |
9291a0cd TT |
10994 | { |
10995 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
10996 | directory, get rid of it. */ | |
d721ba37 | 10997 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 10998 | |
d721ba37 PA |
10999 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11000 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11001 | } |
11002 | ||
d721ba37 PA |
11003 | if (res.name == NULL) |
11004 | res.name = "<unknown>"; | |
11005 | ||
11006 | return res; | |
9291a0cd TT |
11007 | } |
11008 | ||
f4dc4d17 DE |
11009 | /* Handle DW_AT_stmt_list for a compilation unit. |
11010 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11011 | COMP_DIR is the compilation directory. LOWPC is passed to |
11012 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11013 | |
11014 | static void | |
11015 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11016 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11017 | { |
976ca316 | 11018 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
2ab95328 | 11019 | struct attribute *attr; |
527f3840 JK |
11020 | struct line_header line_header_local; |
11021 | hashval_t line_header_local_hash; | |
527f3840 JK |
11022 | void **slot; |
11023 | int decode_mapping; | |
2ab95328 | 11024 | |
f4dc4d17 DE |
11025 | gdb_assert (! cu->per_cu->is_debug_types); |
11026 | ||
2ab95328 | 11027 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e | 11028 | if (attr == NULL || !attr->form_is_unsigned ()) |
527f3840 JK |
11029 | return; |
11030 | ||
d4df075e | 11031 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
527f3840 JK |
11032 | |
11033 | /* The line header hash table is only created if needed (it exists to | |
11034 | prevent redundant reading of the line table for partial_units). | |
11035 | If we're given a partial_unit, we'll need it. If we're given a | |
11036 | compile_unit, then use the line header hash table if it's already | |
11037 | created, but don't create one just yet. */ | |
11038 | ||
976ca316 | 11039 | if (per_objfile->line_header_hash == NULL |
527f3840 | 11040 | && die->tag == DW_TAG_partial_unit) |
2ab95328 | 11041 | { |
976ca316 | 11042 | per_objfile->line_header_hash |
d15acc42 TT |
11043 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
11044 | line_header_eq_voidp, | |
11045 | free_line_header_voidp, | |
11046 | xcalloc, xfree)); | |
527f3840 | 11047 | } |
2ab95328 | 11048 | |
9c541725 | 11049 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11050 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11051 | line_header_local_hash = line_header_hash (&line_header_local); | |
976ca316 | 11052 | if (per_objfile->line_header_hash != NULL) |
527f3840 | 11053 | { |
976ca316 | 11054 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
11055 | &line_header_local, |
11056 | line_header_local_hash, NO_INSERT); | |
11057 | ||
11058 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11059 | is not present in *SLOT (since if there is something in *SLOT then | |
11060 | it will be for a partial_unit). */ | |
11061 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11062 | { |
527f3840 | 11063 | gdb_assert (*slot != NULL); |
9a3c8263 | 11064 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11065 | return; |
dee91e82 | 11066 | } |
2ab95328 | 11067 | } |
527f3840 JK |
11068 | |
11069 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11070 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11071 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11072 | if (lh == NULL) | |
527f3840 | 11073 | return; |
4c8aa72d PA |
11074 | |
11075 | cu->line_header = lh.release (); | |
11076 | cu->line_header_die_owner = die; | |
527f3840 | 11077 | |
976ca316 | 11078 | if (per_objfile->line_header_hash == NULL) |
527f3840 JK |
11079 | slot = NULL; |
11080 | else | |
11081 | { | |
976ca316 | 11082 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
11083 | &line_header_local, |
11084 | line_header_local_hash, INSERT); | |
11085 | gdb_assert (slot != NULL); | |
11086 | } | |
11087 | if (slot != NULL && *slot == NULL) | |
11088 | { | |
11089 | /* This newly decoded line number information unit will be owned | |
11090 | by line_header_hash hash table. */ | |
11091 | *slot = cu->line_header; | |
4c8aa72d | 11092 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11093 | } |
11094 | else | |
11095 | { | |
11096 | /* We cannot free any current entry in (*slot) as that struct line_header | |
dda83cd7 | 11097 | may be already used by multiple CUs. Create only temporary decoded |
527f3840 JK |
11098 | line_header for this CU - it may happen at most once for each line |
11099 | number information unit. And if we're not using line_header_hash | |
11100 | then this is what we want as well. */ | |
11101 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11102 | } |
11103 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11104 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11105 | decode_mapping); | |
fff8551c | 11106 | |
2ab95328 TT |
11107 | } |
11108 | ||
95554aad | 11109 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11110 | |
c906108c | 11111 | static void |
e7c27a73 | 11112 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11113 | { |
976ca316 SM |
11114 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
11115 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 11116 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 11117 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11118 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11119 | struct attribute *attr; | |
c906108c | 11120 | struct die_info *child_die; |
e142c38c | 11121 | CORE_ADDR baseaddr; |
6e70227d | 11122 | |
380618d6 | 11123 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 11124 | baseaddr = objfile->text_section_offset (); |
c906108c | 11125 | |
fae299cd | 11126 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11127 | |
11128 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11129 | from finish_block. */ | |
2acceee2 | 11130 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11131 | lowpc = highpc; |
3e29f34a | 11132 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11133 | |
d721ba37 | 11134 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11135 | |
f4b8a18d KW |
11136 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11137 | standardised yet. As a workaround for the language detection we fall | |
11138 | back to the DW_AT_producer string. */ | |
11139 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11140 | cu->language = language_opencl; | |
11141 | ||
3019eac3 DE |
11142 | /* Similar hack for Go. */ |
11143 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11144 | set_cu_language (DW_LANG_Go, cu); | |
11145 | ||
c24bdb02 | 11146 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11147 | |
11148 | /* Decode line number information if present. We do this before | |
11149 | processing child DIEs, so that the line header table is available | |
11150 | for DW_AT_decl_file. */ | |
d721ba37 | 11151 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11152 | |
11153 | /* Process all dies in compilation unit. */ | |
11154 | if (die->child != NULL) | |
11155 | { | |
11156 | child_die = die->child; | |
11157 | while (child_die && child_die->tag) | |
11158 | { | |
11159 | process_die (child_die, cu); | |
436c571c | 11160 | child_die = child_die->sibling; |
3019eac3 DE |
11161 | } |
11162 | } | |
11163 | ||
11164 | /* Decode macro information, if present. Dwarf 2 macro information | |
11165 | refers to information in the line number info statement program | |
11166 | header, so we can only read it if we've read the header | |
11167 | successfully. */ | |
0af92d60 JK |
11168 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11169 | if (attr == NULL) | |
11170 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
529908cb | 11171 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 DE |
11172 | { |
11173 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11174 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11175 | |
529908cb | 11176 | dwarf_decode_macros (cu, attr->as_unsigned (), 1); |
3019eac3 DE |
11177 | } |
11178 | else | |
11179 | { | |
11180 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
529908cb | 11181 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 | 11182 | { |
529908cb | 11183 | unsigned int macro_offset = attr->as_unsigned (); |
3019eac3 | 11184 | |
43f3e411 | 11185 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11186 | } |
11187 | } | |
3019eac3 DE |
11188 | } |
11189 | ||
c24bdb02 KS |
11190 | void |
11191 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11192 | { |
f4dc4d17 DE |
11193 | struct type_unit_group *tu_group; |
11194 | int first_time; | |
3019eac3 | 11195 | struct attribute *attr; |
9c541725 | 11196 | unsigned int i; |
0186c6a7 | 11197 | struct signatured_type *sig_type; |
3019eac3 | 11198 | |
f4dc4d17 | 11199 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11200 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11201 | |
c24bdb02 | 11202 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11203 | |
f4dc4d17 | 11204 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11205 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11206 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11207 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11208 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11209 | |
11210 | /* If we've already processed this stmt_list there's no real need to | |
11211 | do it again, we could fake it and just recreate the part we need | |
11212 | (file name,index -> symtab mapping). If data shows this optimization | |
11213 | is useful we can do it then. */ | |
8adb8487 TT |
11214 | type_unit_group_unshareable *tug_unshare |
11215 | = per_objfile->get_type_unit_group_unshareable (tu_group); | |
11216 | first_time = tug_unshare->compunit_symtab == NULL; | |
f4dc4d17 DE |
11217 | |
11218 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11219 | debug info. */ | |
fff8551c | 11220 | line_header_up lh; |
d4df075e | 11221 | if (attr != NULL && attr->form_is_unsigned ()) |
3019eac3 | 11222 | { |
d4df075e | 11223 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
c24bdb02 | 11224 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11225 | } |
11226 | if (lh == NULL) | |
11227 | { | |
11228 | if (first_time) | |
c24bdb02 | 11229 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11230 | else |
11231 | { | |
8adb8487 | 11232 | gdb_assert (tug_unshare->symtabs == NULL); |
c24bdb02 | 11233 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11234 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11235 | m_builder.reset (new struct buildsym_compunit |
11236 | (COMPUNIT_OBJFILE (cust), "", | |
11237 | COMPUNIT_DIRNAME (cust), | |
11238 | compunit_language (cust), | |
11239 | 0, cust)); | |
770479f2 | 11240 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11241 | } |
f4dc4d17 | 11242 | return; |
3019eac3 DE |
11243 | } |
11244 | ||
c24bdb02 KS |
11245 | line_header = lh.release (); |
11246 | line_header_die_owner = die; | |
3019eac3 | 11247 | |
f4dc4d17 DE |
11248 | if (first_time) |
11249 | { | |
c24bdb02 | 11250 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11251 | |
1fd60fc0 DE |
11252 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11253 | still initializing it, and our caller (a few levels up) | |
11254 | process_full_type_unit still needs to know if this is the first | |
11255 | time. */ | |
11256 | ||
8adb8487 | 11257 | tug_unshare->symtabs |
4ac93832 TT |
11258 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, |
11259 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 11260 | |
7ba99d21 AT |
11261 | auto &file_names = line_header->file_names (); |
11262 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11263 | { |
7ba99d21 | 11264 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11265 | dwarf2_start_subfile (this, fe.name, |
11266 | fe.include_dir (line_header)); | |
11267 | buildsym_compunit *b = get_builder (); | |
11268 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11269 | { |
4c8aa72d PA |
11270 | /* NOTE: start_subfile will recognize when it's been |
11271 | passed a file it has already seen. So we can't | |
11272 | assume there's a simple mapping from | |
11273 | cu->line_header->file_names to subfiles, plus | |
11274 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11275 | b->get_current_subfile ()->symtab |
11276 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11277 | } |
11278 | ||
c24bdb02 | 11279 | fe.symtab = b->get_current_subfile ()->symtab; |
8adb8487 | 11280 | tug_unshare->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11281 | } |
11282 | } | |
11283 | else | |
3019eac3 | 11284 | { |
c24bdb02 | 11285 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11286 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11287 | m_builder.reset (new struct buildsym_compunit |
11288 | (COMPUNIT_OBJFILE (cust), "", | |
11289 | COMPUNIT_DIRNAME (cust), | |
11290 | compunit_language (cust), | |
11291 | 0, cust)); | |
770479f2 | 11292 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11293 | |
7ba99d21 AT |
11294 | auto &file_names = line_header->file_names (); |
11295 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11296 | { |
7ba99d21 | 11297 | file_entry &fe = file_names[i]; |
8adb8487 | 11298 | fe.symtab = tug_unshare->symtabs[i]; |
f4dc4d17 | 11299 | } |
3019eac3 DE |
11300 | } |
11301 | ||
f4dc4d17 DE |
11302 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11303 | so they don't have a "real" (so to speak) symtab anyway. | |
11304 | There is later code that will assign the main symtab to all symbols | |
11305 | that don't have one. We need to handle the case of a symbol with a | |
11306 | missing symtab (DW_AT_decl_file) anyway. */ | |
11307 | } | |
3019eac3 | 11308 | |
f4dc4d17 DE |
11309 | /* Process DW_TAG_type_unit. |
11310 | For TUs we want to skip the first top level sibling if it's not the | |
11311 | actual type being defined by this TU. In this case the first top | |
11312 | level sibling is there to provide context only. */ | |
3019eac3 | 11313 | |
f4dc4d17 DE |
11314 | static void |
11315 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11316 | { | |
11317 | struct die_info *child_die; | |
3019eac3 | 11318 | |
f4dc4d17 DE |
11319 | prepare_one_comp_unit (cu, die, language_minimal); |
11320 | ||
11321 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11322 | We do this before processing child DIEs, so that the line header table | |
11323 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11324 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11325 | |
11326 | if (die->child != NULL) | |
11327 | { | |
11328 | child_die = die->child; | |
11329 | while (child_die && child_die->tag) | |
11330 | { | |
11331 | process_die (child_die, cu); | |
436c571c | 11332 | child_die = child_die->sibling; |
f4dc4d17 DE |
11333 | } |
11334 | } | |
3019eac3 DE |
11335 | } |
11336 | \f | |
80626a55 DE |
11337 | /* DWO/DWP files. |
11338 | ||
11339 | http://gcc.gnu.org/wiki/DebugFission | |
11340 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11341 | ||
11342 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11343 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11344 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11345 | |
11346 | static hashval_t | |
11347 | hash_dwo_file (const void *item) | |
11348 | { | |
9a3c8263 | 11349 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11350 | hashval_t hash; |
3019eac3 | 11351 | |
a2ce51a0 DE |
11352 | hash = htab_hash_string (dwo_file->dwo_name); |
11353 | if (dwo_file->comp_dir != NULL) | |
11354 | hash += htab_hash_string (dwo_file->comp_dir); | |
11355 | return hash; | |
3019eac3 DE |
11356 | } |
11357 | ||
11358 | static int | |
11359 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11360 | { | |
9a3c8263 SM |
11361 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11362 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11363 | |
a2ce51a0 DE |
11364 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11365 | return 0; | |
11366 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11367 | return lhs->comp_dir == rhs->comp_dir; | |
11368 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11369 | } |
11370 | ||
11371 | /* Allocate a hash table for DWO files. */ | |
11372 | ||
51ac9db5 | 11373 | static htab_up |
298e9637 | 11374 | allocate_dwo_file_hash_table () |
3019eac3 | 11375 | { |
51ac9db5 SM |
11376 | auto delete_dwo_file = [] (void *item) |
11377 | { | |
11378 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11379 | ||
11380 | delete dwo_file; | |
11381 | }; | |
11382 | ||
bc68fb19 TT |
11383 | return htab_up (htab_create_alloc (41, |
11384 | hash_dwo_file, | |
11385 | eq_dwo_file, | |
11386 | delete_dwo_file, | |
11387 | xcalloc, xfree)); | |
3019eac3 DE |
11388 | } |
11389 | ||
80626a55 DE |
11390 | /* Lookup DWO file DWO_NAME. */ |
11391 | ||
11392 | static void ** | |
976ca316 | 11393 | lookup_dwo_file_slot (dwarf2_per_objfile *per_objfile, |
ed2dc618 SM |
11394 | const char *dwo_name, |
11395 | const char *comp_dir) | |
80626a55 DE |
11396 | { |
11397 | struct dwo_file find_entry; | |
11398 | void **slot; | |
11399 | ||
976ca316 SM |
11400 | if (per_objfile->per_bfd->dwo_files == NULL) |
11401 | per_objfile->per_bfd->dwo_files = allocate_dwo_file_hash_table (); | |
80626a55 | 11402 | |
0ac5b59e DE |
11403 | find_entry.dwo_name = dwo_name; |
11404 | find_entry.comp_dir = comp_dir; | |
976ca316 | 11405 | slot = htab_find_slot (per_objfile->per_bfd->dwo_files.get (), &find_entry, |
51ac9db5 | 11406 | INSERT); |
80626a55 DE |
11407 | |
11408 | return slot; | |
11409 | } | |
11410 | ||
3019eac3 DE |
11411 | static hashval_t |
11412 | hash_dwo_unit (const void *item) | |
11413 | { | |
9a3c8263 | 11414 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11415 | |
11416 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11417 | return dwo_unit->signature; | |
11418 | } | |
11419 | ||
11420 | static int | |
11421 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11422 | { | |
9a3c8263 SM |
11423 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11424 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11425 | |
11426 | /* The signature is assumed to be unique within the DWO file. | |
11427 | So while object file CU dwo_id's always have the value zero, | |
11428 | that's OK, assuming each object file DWO file has only one CU, | |
11429 | and that's the rule for now. */ | |
11430 | return lhs->signature == rhs->signature; | |
11431 | } | |
11432 | ||
11433 | /* Allocate a hash table for DWO CUs,TUs. | |
11434 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11435 | ||
b0b6a987 | 11436 | static htab_up |
298e9637 | 11437 | allocate_dwo_unit_table () |
3019eac3 DE |
11438 | { |
11439 | /* Start out with a pretty small number. | |
11440 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11441 | return htab_up (htab_create_alloc (3, |
11442 | hash_dwo_unit, | |
11443 | eq_dwo_unit, | |
11444 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11445 | } |
11446 | ||
19c3d4c9 | 11447 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11448 | |
11449 | static void | |
19c3d4c9 DE |
11450 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11451 | const gdb_byte *info_ptr, | |
11452 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11453 | struct dwo_file *dwo_file, |
11454 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11455 | { |
11456 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11457 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11458 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11459 | |
a084a2a6 AT |
11460 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11461 | if (!signature.has_value ()) | |
3019eac3 | 11462 | { |
b98664d3 | 11463 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11464 | " its dwo_id [in module %s]"), |
9d8780f0 | 11465 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11466 | return; |
11467 | } | |
11468 | ||
3019eac3 | 11469 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11470 | dwo_unit->signature = *signature; |
8a0459fd | 11471 | dwo_unit->section = section; |
9c541725 | 11472 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11473 | dwo_unit->length = cu->per_cu->length; |
11474 | ||
6f738b01 SM |
11475 | dwarf_read_debug_printf (" offset %s, dwo_id %s", |
11476 | sect_offset_str (sect_off), | |
11477 | hex_string (dwo_unit->signature)); | |
3019eac3 DE |
11478 | } |
11479 | ||
33c5cd75 | 11480 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11481 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11482 | |
33c5cd75 | 11483 | static void |
976ca316 | 11484 | create_cus_hash_table (dwarf2_per_objfile *per_objfile, |
18a8505e | 11485 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11486 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 | 11487 | { |
976ca316 SM |
11488 | struct objfile *objfile = per_objfile->objfile; |
11489 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
d521ce57 | 11490 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11491 | |
96b79293 | 11492 | section.read (objfile); |
33c5cd75 | 11493 | info_ptr = section.buffer; |
3019eac3 DE |
11494 | |
11495 | if (info_ptr == NULL) | |
33c5cd75 | 11496 | return; |
3019eac3 | 11497 | |
6f738b01 SM |
11498 | dwarf_read_debug_printf ("Reading %s for %s:", |
11499 | section.get_name (), | |
11500 | section.get_file_name ()); | |
3019eac3 | 11501 | |
33c5cd75 | 11502 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11503 | while (info_ptr < end_ptr) |
11504 | { | |
11505 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11506 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11507 | struct dwo_unit *dwo_unit; |
11508 | void **slot; | |
11509 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11510 | |
11511 | memset (&per_cu, 0, sizeof (per_cu)); | |
1859c670 | 11512 | per_cu.per_bfd = per_bfd; |
3019eac3 | 11513 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11514 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11515 | per_cu.section = §ion; | |
11516 | ||
976ca316 | 11517 | cutu_reader reader (&per_cu, per_objfile, cu, &dwo_file); |
c0ab21c2 TT |
11518 | if (!reader.dummy_p) |
11519 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11520 | &dwo_file, &read_unit); |
33c5cd75 DB |
11521 | info_ptr += per_cu.length; |
11522 | ||
11523 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11524 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11525 | continue; |
3019eac3 | 11526 | |
33c5cd75 | 11527 | if (cus_htab == NULL) |
298e9637 | 11528 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11529 | |
1859c670 | 11530 | dwo_unit = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 11531 | struct dwo_unit); |
c0ab21c2 | 11532 | *dwo_unit = read_unit; |
b0b6a987 | 11533 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11534 | gdb_assert (slot != NULL); |
11535 | if (*slot != NULL) | |
19c3d4c9 | 11536 | { |
33c5cd75 DB |
11537 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11538 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11539 | |
b98664d3 | 11540 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11541 | " the entry at offset %s, signature %s"), |
11542 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11543 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11544 | } |
33c5cd75 | 11545 | *slot = (void *)dwo_unit; |
3019eac3 | 11546 | } |
3019eac3 DE |
11547 | } |
11548 | ||
80626a55 DE |
11549 | /* DWP file .debug_{cu,tu}_index section format: |
11550 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
d2854d8d CT |
11551 | [ref: http://dwarfstd.org/doc/DWARF5.pdf, sect 7.3.5 "DWARF Package Files"] |
11552 | ||
11553 | DWP Versions 1 & 2 are older, pre-standard format versions. The first | |
11554 | officially standard DWP format was published with DWARF v5 and is called | |
11555 | Version 5. There are no versions 3 or 4. | |
80626a55 | 11556 | |
d2415c6c DE |
11557 | DWP Version 1: |
11558 | ||
80626a55 DE |
11559 | Both index sections have the same format, and serve to map a 64-bit |
11560 | signature to a set of section numbers. Each section begins with a header, | |
11561 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11562 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11563 | aligned at 8-byte boundaries in the file. | |
11564 | ||
d2415c6c DE |
11565 | The index section header consists of: |
11566 | ||
11567 | V, 32 bit version number | |
11568 | -, 32 bits unused | |
11569 | N, 32 bit number of compilation units or type units in the index | |
11570 | M, 32 bit number of slots in the hash table | |
80626a55 | 11571 | |
d2415c6c | 11572 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11573 | |
d2415c6c DE |
11574 | The hash table begins at offset 16 in the section, and consists of an array |
11575 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11576 | order of the application binary). Unused slots in the hash table are 0. | |
11577 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11578 | |
d2415c6c DE |
11579 | The parallel table begins immediately after the hash table |
11580 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11581 | array of 32-bit indexes (using the byte order of the application binary), | |
11582 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11583 | table contains a 32-bit index into the pool of section numbers. For unused | |
11584 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11585 | |
73869dc2 DE |
11586 | The pool of section numbers begins immediately following the hash table |
11587 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11588 | section numbers consists of an array of 32-bit words (using the byte order | |
11589 | of the application binary). Each item in the array is indexed starting | |
11590 | from 0. The hash table entry provides the index of the first section | |
11591 | number in the set. Additional section numbers in the set follow, and the | |
11592 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11593 | ||
11594 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11595 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11596 | be the second entry. Other members of the set may follow in any order. | |
11597 | ||
11598 | --- | |
11599 | ||
d2854d8d | 11600 | DWP Versions 2 and 5: |
73869dc2 | 11601 | |
d2854d8d | 11602 | DWP Versions 2 and 5 combine all the .debug_info, etc. sections into one, |
73869dc2 DE |
11603 | and the entries in the index tables are now offsets into these sections. |
11604 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11605 | section. | |
11606 | ||
11607 | Index Section Contents: | |
11608 | Header | |
11609 | Hash Table of Signatures dwp_hash_table.hash_table | |
11610 | Parallel Table of Indices dwp_hash_table.unit_table | |
d2854d8d CT |
11611 | Table of Section Offsets dwp_hash_table.{v2|v5}.{section_ids,offsets} |
11612 | Table of Section Sizes dwp_hash_table.{v2|v5}.sizes | |
73869dc2 DE |
11613 | |
11614 | The index section header consists of: | |
11615 | ||
11616 | V, 32 bit version number | |
11617 | L, 32 bit number of columns in the table of section offsets | |
11618 | N, 32 bit number of compilation units or type units in the index | |
11619 | M, 32 bit number of slots in the hash table | |
11620 | ||
11621 | Numbers are recorded using the byte order of the application binary. | |
11622 | ||
11623 | The hash table has the same format as version 1. | |
11624 | The parallel table of indices has the same format as version 1, | |
11625 | except that the entries are origin-1 indices into the table of sections | |
11626 | offsets and the table of section sizes. | |
11627 | ||
11628 | The table of offsets begins immediately following the parallel table | |
11629 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11630 | a two-dimensional array of 32-bit words (using the byte order of the | |
11631 | application binary), with L columns and N+1 rows, in row-major order. | |
11632 | Each row in the array is indexed starting from 0. The first row provides | |
11633 | a key to the remaining rows: each column in this row provides an identifier | |
11634 | for a debug section, and the offsets in the same column of subsequent rows | |
d2854d8d | 11635 | refer to that section. The section identifiers for Version 2 are: |
73869dc2 DE |
11636 | |
11637 | DW_SECT_INFO 1 .debug_info.dwo | |
11638 | DW_SECT_TYPES 2 .debug_types.dwo | |
11639 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11640 | DW_SECT_LINE 4 .debug_line.dwo | |
11641 | DW_SECT_LOC 5 .debug_loc.dwo | |
11642 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11643 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11644 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11645 | ||
d2854d8d CT |
11646 | The section identifiers for Version 5 are: |
11647 | ||
11648 | DW_SECT_INFO_V5 1 .debug_info.dwo | |
11649 | DW_SECT_RESERVED_V5 2 -- | |
11650 | DW_SECT_ABBREV_V5 3 .debug_abbrev.dwo | |
11651 | DW_SECT_LINE_V5 4 .debug_line.dwo | |
11652 | DW_SECT_LOCLISTS_V5 5 .debug_loclists.dwo | |
11653 | DW_SECT_STR_OFFSETS_V5 6 .debug_str_offsets.dwo | |
11654 | DW_SECT_MACRO_V5 7 .debug_macro.dwo | |
11655 | DW_SECT_RNGLISTS_V5 8 .debug_rnglists.dwo | |
11656 | ||
73869dc2 DE |
11657 | The offsets provided by the CU and TU index sections are the base offsets |
11658 | for the contributions made by each CU or TU to the corresponding section | |
11659 | in the package file. Each CU and TU header contains an abbrev_offset | |
11660 | field, used to find the abbreviations table for that CU or TU within the | |
11661 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11662 | be interpreted as relative to the base offset given in the index section. | |
11663 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11664 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11665 | and offsets into other debug sections obtained from DWARF attributes should | |
11666 | also be interpreted as relative to the corresponding base offset. | |
11667 | ||
11668 | The table of sizes begins immediately following the table of offsets. | |
11669 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11670 | with L columns and N rows, in row-major order. Each row in the array is | |
11671 | indexed starting from 1 (row 0 is shared by the two tables). | |
11672 | ||
11673 | --- | |
11674 | ||
11675 | Hash table lookup is handled the same in version 1 and 2: | |
11676 | ||
11677 | We assume that N and M will not exceed 2^32 - 1. | |
11678 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11679 | ||
d2415c6c DE |
11680 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11681 | in the hash table is located as follows: | |
80626a55 | 11682 | |
d2415c6c DE |
11683 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11684 | the low-order k bits all set to 1. | |
80626a55 | 11685 | |
d2415c6c | 11686 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11687 | |
d2415c6c DE |
11688 | 3) If the hash table entry at index H matches the signature, use that |
11689 | entry. If the hash table entry at index H is unused (all zeroes), | |
11690 | terminate the search: the signature is not present in the table. | |
80626a55 | 11691 | |
d2415c6c | 11692 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11693 | |
d2415c6c | 11694 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11695 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11696 | |
11697 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11698 | .debug_{info,types}.dwo in DWP_FILE. | |
11699 | Returns NULL if there isn't one. | |
11700 | Note: This function processes DWP files only, not DWO files. */ | |
11701 | ||
11702 | static struct dwp_hash_table * | |
976ca316 | 11703 | create_dwp_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11704 | struct dwp_file *dwp_file, int is_debug_types) |
80626a55 | 11705 | { |
976ca316 | 11706 | struct objfile *objfile = per_objfile->objfile; |
400174b1 | 11707 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11708 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11709 | struct dwarf2_section_info *index; |
73869dc2 | 11710 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11711 | struct dwp_hash_table *htab; |
11712 | ||
11713 | if (is_debug_types) | |
11714 | index = &dwp_file->sections.tu_index; | |
11715 | else | |
11716 | index = &dwp_file->sections.cu_index; | |
11717 | ||
96b79293 | 11718 | if (index->empty ()) |
80626a55 | 11719 | return NULL; |
96b79293 | 11720 | index->read (objfile); |
80626a55 DE |
11721 | |
11722 | index_ptr = index->buffer; | |
11723 | index_end = index_ptr + index->size; | |
11724 | ||
d2854d8d CT |
11725 | /* For Version 5, the version is really 2 bytes of data & 2 bytes of padding. |
11726 | For now it's safe to just read 4 bytes (particularly as it's difficult to | |
11727 | tell if you're dealing with Version 5 before you've read the version). */ | |
80626a55 | 11728 | version = read_4_bytes (dbfd, index_ptr); |
73869dc2 | 11729 | index_ptr += 4; |
d2854d8d | 11730 | if (version == 2 || version == 5) |
73869dc2 DE |
11731 | nr_columns = read_4_bytes (dbfd, index_ptr); |
11732 | else | |
11733 | nr_columns = 0; | |
11734 | index_ptr += 4; | |
80626a55 DE |
11735 | nr_units = read_4_bytes (dbfd, index_ptr); |
11736 | index_ptr += 4; | |
11737 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11738 | index_ptr += 4; | |
11739 | ||
d2854d8d | 11740 | if (version != 1 && version != 2 && version != 5) |
80626a55 | 11741 | { |
21aa081e | 11742 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11743 | " [in module %s]"), |
21aa081e | 11744 | pulongest (version), dwp_file->name); |
80626a55 DE |
11745 | } |
11746 | if (nr_slots != (nr_slots & -nr_slots)) | |
11747 | { | |
21aa081e | 11748 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11749 | " is not power of 2 [in module %s]"), |
21aa081e | 11750 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11751 | } |
11752 | ||
976ca316 | 11753 | htab = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwp_hash_table); |
73869dc2 DE |
11754 | htab->version = version; |
11755 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11756 | htab->nr_units = nr_units; |
11757 | htab->nr_slots = nr_slots; | |
11758 | htab->hash_table = index_ptr; | |
11759 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11760 | |
11761 | /* Exit early if the table is empty. */ | |
11762 | if (nr_slots == 0 || nr_units == 0 | |
d2854d8d CT |
11763 | || (version == 2 && nr_columns == 0) |
11764 | || (version == 5 && nr_columns == 0)) | |
73869dc2 DE |
11765 | { |
11766 | /* All must be zero. */ | |
11767 | if (nr_slots != 0 || nr_units != 0 | |
d2854d8d CT |
11768 | || (version == 2 && nr_columns != 0) |
11769 | || (version == 5 && nr_columns != 0)) | |
73869dc2 | 11770 | { |
b98664d3 | 11771 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11772 | " all zero [in modules %s]"), |
11773 | dwp_file->name); | |
11774 | } | |
11775 | return htab; | |
11776 | } | |
11777 | ||
11778 | if (version == 1) | |
11779 | { | |
11780 | htab->section_pool.v1.indices = | |
11781 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11782 | /* It's harder to decide whether the section is too small in v1. | |
11783 | V1 is deprecated anyway so we punt. */ | |
11784 | } | |
d2854d8d | 11785 | else if (version == 2) |
73869dc2 DE |
11786 | { |
11787 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11788 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11789 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11790 | /* Reverse map for error checking. */ |
11791 | int ids_seen[DW_SECT_MAX + 1]; | |
11792 | int i; | |
11793 | ||
11794 | if (nr_columns < 2) | |
11795 | { | |
11796 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11797 | " in section table [in module %s]"), | |
11798 | dwp_file->name); | |
11799 | } | |
11800 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11801 | { | |
11802 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11803 | " in section table [in module %s]"), | |
11804 | dwp_file->name); | |
11805 | } | |
04fd5eed GB |
11806 | memset (ids, 255, sizeof_ids); |
11807 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11808 | for (i = 0; i < nr_columns; ++i) |
11809 | { | |
11810 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11811 | ||
11812 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11813 | { | |
11814 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11815 | " in section table [in module %s]"), | |
11816 | id, dwp_file->name); | |
11817 | } | |
11818 | if (ids_seen[id] != -1) | |
11819 | { | |
11820 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11821 | " id %d in section table [in module %s]"), | |
11822 | id, dwp_file->name); | |
11823 | } | |
11824 | ids_seen[id] = i; | |
11825 | ids[i] = id; | |
11826 | } | |
11827 | /* Must have exactly one info or types section. */ | |
11828 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11829 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11830 | != 1) | |
11831 | { | |
11832 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11833 | " DWO info/types section [in module %s]"), | |
11834 | dwp_file->name); | |
11835 | } | |
11836 | /* Must have an abbrev section. */ | |
11837 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11838 | { | |
11839 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11840 | " section [in module %s]"), | |
11841 | dwp_file->name); | |
11842 | } | |
11843 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11844 | htab->section_pool.v2.sizes = | |
11845 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11846 | * nr_units * nr_columns); | |
11847 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11848 | * nr_units * nr_columns)) | |
11849 | > index_end) | |
11850 | { | |
11851 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11852 | " [in module %s]"), | |
11853 | dwp_file->name); | |
11854 | } | |
11855 | } | |
d2854d8d CT |
11856 | else /* version == 5 */ |
11857 | { | |
11858 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11859 | int *ids = htab->section_pool.v5.section_ids; | |
11860 | size_t sizeof_ids = sizeof (htab->section_pool.v5.section_ids); | |
11861 | /* Reverse map for error checking. */ | |
11862 | int ids_seen[DW_SECT_MAX_V5 + 1]; | |
11863 | ||
11864 | if (nr_columns < 2) | |
11865 | { | |
11866 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11867 | " in section table [in module %s]"), | |
11868 | dwp_file->name); | |
11869 | } | |
11870 | if (nr_columns > MAX_NR_V5_DWO_SECTIONS) | |
11871 | { | |
11872 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11873 | " in section table [in module %s]"), | |
11874 | dwp_file->name); | |
11875 | } | |
11876 | memset (ids, 255, sizeof_ids); | |
11877 | memset (ids_seen, 255, sizeof (ids_seen)); | |
11878 | for (int i = 0; i < nr_columns; ++i) | |
11879 | { | |
11880 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11881 | ||
11882 | if (id < DW_SECT_MIN || id > DW_SECT_MAX_V5) | |
11883 | { | |
11884 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11885 | " in section table [in module %s]"), | |
11886 | id, dwp_file->name); | |
11887 | } | |
11888 | if (ids_seen[id] != -1) | |
11889 | { | |
11890 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11891 | " id %d in section table [in module %s]"), | |
11892 | id, dwp_file->name); | |
11893 | } | |
11894 | ids_seen[id] = i; | |
11895 | ids[i] = id; | |
11896 | } | |
11897 | /* Must have seen an info section. */ | |
11898 | if (ids_seen[DW_SECT_INFO_V5] == -1) | |
11899 | { | |
11900 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11901 | " DWO info/types section [in module %s]"), | |
11902 | dwp_file->name); | |
11903 | } | |
11904 | /* Must have an abbrev section. */ | |
11905 | if (ids_seen[DW_SECT_ABBREV_V5] == -1) | |
11906 | { | |
11907 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11908 | " section [in module %s]"), | |
11909 | dwp_file->name); | |
11910 | } | |
11911 | htab->section_pool.v5.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11912 | htab->section_pool.v5.sizes | |
11913 | = htab->section_pool.v5.offsets + (sizeof (uint32_t) | |
11914 | * nr_units * nr_columns); | |
11915 | if ((htab->section_pool.v5.sizes + (sizeof (uint32_t) | |
11916 | * nr_units * nr_columns)) | |
11917 | > index_end) | |
11918 | { | |
11919 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11920 | " [in module %s]"), | |
11921 | dwp_file->name); | |
11922 | } | |
11923 | } | |
80626a55 DE |
11924 | |
11925 | return htab; | |
11926 | } | |
11927 | ||
11928 | /* Update SECTIONS with the data from SECTP. | |
11929 | ||
5bb6e9dd TT |
11930 | This function is like the other "locate" section routines, but in |
11931 | this context the sections to read comes from the DWP V1 hash table, | |
11932 | not the full ELF section table. | |
80626a55 DE |
11933 | |
11934 | The result is non-zero for success, or zero if an error was found. */ | |
11935 | ||
11936 | static int | |
73869dc2 DE |
11937 | locate_v1_virtual_dwo_sections (asection *sectp, |
11938 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11939 | { |
11940 | const struct dwop_section_names *names = &dwop_section_names; | |
11941 | ||
11942 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
11943 | { | |
11944 | /* There can be only one. */ | |
049412e3 | 11945 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11946 | return 0; |
049412e3 | 11947 | sections->abbrev.s.section = sectp; |
fd361982 | 11948 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
11949 | } |
11950 | else if (section_is_p (sectp->name, &names->info_dwo) | |
11951 | || section_is_p (sectp->name, &names->types_dwo)) | |
11952 | { | |
11953 | /* There can be only one. */ | |
049412e3 | 11954 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11955 | return 0; |
049412e3 | 11956 | sections->info_or_types.s.section = sectp; |
fd361982 | 11957 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
11958 | } |
11959 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
11960 | { | |
11961 | /* There can be only one. */ | |
049412e3 | 11962 | if (sections->line.s.section != NULL) |
80626a55 | 11963 | return 0; |
049412e3 | 11964 | sections->line.s.section = sectp; |
fd361982 | 11965 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
11966 | } |
11967 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
11968 | { | |
11969 | /* There can be only one. */ | |
049412e3 | 11970 | if (sections->loc.s.section != NULL) |
80626a55 | 11971 | return 0; |
049412e3 | 11972 | sections->loc.s.section = sectp; |
fd361982 | 11973 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
11974 | } |
11975 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
11976 | { | |
11977 | /* There can be only one. */ | |
049412e3 | 11978 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11979 | return 0; |
049412e3 | 11980 | sections->macinfo.s.section = sectp; |
fd361982 | 11981 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
11982 | } |
11983 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
11984 | { | |
11985 | /* There can be only one. */ | |
049412e3 | 11986 | if (sections->macro.s.section != NULL) |
80626a55 | 11987 | return 0; |
049412e3 | 11988 | sections->macro.s.section = sectp; |
fd361982 | 11989 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
11990 | } |
11991 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
11992 | { | |
11993 | /* There can be only one. */ | |
049412e3 | 11994 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11995 | return 0; |
049412e3 | 11996 | sections->str_offsets.s.section = sectp; |
fd361982 | 11997 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11998 | } |
11999 | else | |
12000 | { | |
12001 | /* No other kind of section is valid. */ | |
12002 | return 0; | |
12003 | } | |
12004 | ||
12005 | return 1; | |
12006 | } | |
12007 | ||
73869dc2 DE |
12008 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12009 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12010 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12011 | This is for DWP version 1 files. */ | |
80626a55 DE |
12012 | |
12013 | static struct dwo_unit * | |
976ca316 | 12014 | create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12015 | struct dwp_file *dwp_file, |
73869dc2 DE |
12016 | uint32_t unit_index, |
12017 | const char *comp_dir, | |
12018 | ULONGEST signature, int is_debug_types) | |
80626a55 | 12019 | { |
73869dc2 DE |
12020 | const struct dwp_hash_table *dwp_htab = |
12021 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12022 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
12023 | const char *kind = is_debug_types ? "TU" : "CU"; |
12024 | struct dwo_file *dwo_file; | |
12025 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12026 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12027 | void **dwo_file_slot; |
80626a55 DE |
12028 | int i; |
12029 | ||
73869dc2 DE |
12030 | gdb_assert (dwp_file->version == 1); |
12031 | ||
6f738b01 SM |
12032 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V1 file: %s", |
12033 | kind, pulongest (unit_index), hex_string (signature), | |
12034 | dwp_file->name); | |
80626a55 | 12035 | |
19ac8c2e | 12036 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12037 | Put a limit on the number of sections we look for so that bad data |
12038 | doesn't cause us to loop forever. */ | |
12039 | ||
73869dc2 | 12040 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12041 | (1 /* .debug_info or .debug_types */ \ |
12042 | + 1 /* .debug_abbrev */ \ | |
12043 | + 1 /* .debug_line */ \ | |
12044 | + 1 /* .debug_loc */ \ | |
12045 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12046 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12047 | + 1 /* trailing zero */) |
12048 | ||
12049 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12050 | |
73869dc2 | 12051 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12052 | { |
12053 | asection *sectp; | |
12054 | uint32_t section_nr = | |
12055 | read_4_bytes (dbfd, | |
73869dc2 DE |
12056 | dwp_htab->section_pool.v1.indices |
12057 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12058 | |
12059 | if (section_nr == 0) | |
12060 | break; | |
12061 | if (section_nr >= dwp_file->num_sections) | |
12062 | { | |
12063 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12064 | " [in module %s]"), | |
12065 | dwp_file->name); | |
12066 | } | |
12067 | ||
12068 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12069 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12070 | { |
12071 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12072 | " [in module %s]"), | |
12073 | dwp_file->name); | |
12074 | } | |
12075 | } | |
12076 | ||
12077 | if (i < 2 | |
96b79293 TT |
12078 | || sections.info_or_types.empty () |
12079 | || sections.abbrev.empty ()) | |
80626a55 DE |
12080 | { |
12081 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12082 | " [in module %s]"), | |
12083 | dwp_file->name); | |
12084 | } | |
73869dc2 | 12085 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12086 | { |
12087 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12088 | " [in module %s]"), | |
12089 | dwp_file->name); | |
12090 | } | |
12091 | ||
12092 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12093 | have dwo_unit "live" in that. At least for now. | |
12094 | ||
12095 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12096 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12097 | file, we can combine them back into a virtual DWO file to save space |
12098 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12099 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12100 | ||
791afaa2 TT |
12101 | std::string virtual_dwo_name = |
12102 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
12103 | sections.abbrev.get_id (), |
12104 | sections.line.get_id (), | |
12105 | sections.loc.get_id (), | |
12106 | sections.str_offsets.get_id ()); | |
80626a55 | 12107 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12108 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12109 | comp_dir); |
80626a55 DE |
12110 | /* Create one if necessary. */ |
12111 | if (*dwo_file_slot == NULL) | |
12112 | { | |
6f738b01 SM |
12113 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12114 | virtual_dwo_name.c_str ()); | |
12115 | ||
51ac9db5 | 12116 | dwo_file = new struct dwo_file; |
976ca316 | 12117 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
0ac5b59e | 12118 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12119 | dwo_file->sections.abbrev = sections.abbrev; |
12120 | dwo_file->sections.line = sections.line; | |
12121 | dwo_file->sections.loc = sections.loc; | |
12122 | dwo_file->sections.macinfo = sections.macinfo; | |
12123 | dwo_file->sections.macro = sections.macro; | |
12124 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12125 | /* The "str" section is global to the entire DWP file. */ | |
12126 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12127 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12128 | there's no need to record it in dwo_file. |
12129 | Also, we can't simply record type sections in dwo_file because | |
12130 | we record a pointer into the vector in dwo_unit. As we collect more | |
12131 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12132 | for it, invalidating all copies of pointers into the previous |
12133 | contents. */ | |
80626a55 DE |
12134 | *dwo_file_slot = dwo_file; |
12135 | } | |
12136 | else | |
12137 | { | |
6f738b01 SM |
12138 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12139 | virtual_dwo_name.c_str ()); | |
12140 | ||
9a3c8263 | 12141 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12142 | } |
80626a55 | 12143 | |
976ca316 | 12144 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
80626a55 DE |
12145 | dwo_unit->dwo_file = dwo_file; |
12146 | dwo_unit->signature = signature; | |
8d749320 | 12147 | dwo_unit->section = |
976ca316 | 12148 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
8a0459fd | 12149 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12150 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12151 | |
12152 | return dwo_unit; | |
12153 | } | |
12154 | ||
d2854d8d CT |
12155 | /* Subroutine of create_dwo_unit_in_dwp_v2 and create_dwo_unit_in_dwp_v5 to |
12156 | simplify them. Given a pointer to the containing section SECTION, and | |
12157 | OFFSET,SIZE of the piece within that section used by a TU/CU, return a | |
12158 | virtual section of just that piece. */ | |
73869dc2 DE |
12159 | |
12160 | static struct dwarf2_section_info | |
d2854d8d CT |
12161 | create_dwp_v2_or_v5_section (dwarf2_per_objfile *per_objfile, |
12162 | struct dwarf2_section_info *section, | |
12163 | bfd_size_type offset, bfd_size_type size) | |
73869dc2 DE |
12164 | { |
12165 | struct dwarf2_section_info result; | |
12166 | asection *sectp; | |
12167 | ||
12168 | gdb_assert (section != NULL); | |
12169 | gdb_assert (!section->is_virtual); | |
12170 | ||
12171 | memset (&result, 0, sizeof (result)); | |
12172 | result.s.containing_section = section; | |
dc4ccb6f | 12173 | result.is_virtual = true; |
73869dc2 DE |
12174 | |
12175 | if (size == 0) | |
12176 | return result; | |
12177 | ||
96b79293 | 12178 | sectp = section->get_bfd_section (); |
73869dc2 DE |
12179 | |
12180 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12181 | bounds of the real section. This is a pretty-rare event, so just | |
12182 | flag an error (easier) instead of a warning and trying to cope. */ | |
12183 | if (sectp == NULL | |
fd361982 | 12184 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 12185 | { |
d2854d8d | 12186 | error (_("Dwarf Error: Bad DWP V2 or V5 section info, doesn't fit" |
73869dc2 | 12187 | " in section %s [in module %s]"), |
fd361982 | 12188 | sectp ? bfd_section_name (sectp) : "<unknown>", |
976ca316 | 12189 | objfile_name (per_objfile->objfile)); |
73869dc2 DE |
12190 | } |
12191 | ||
12192 | result.virtual_offset = offset; | |
12193 | result.size = size; | |
12194 | return result; | |
12195 | } | |
12196 | ||
12197 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12198 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12199 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12200 | This is for DWP version 2 files. */ | |
12201 | ||
12202 | static struct dwo_unit * | |
976ca316 | 12203 | create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12204 | struct dwp_file *dwp_file, |
73869dc2 DE |
12205 | uint32_t unit_index, |
12206 | const char *comp_dir, | |
12207 | ULONGEST signature, int is_debug_types) | |
12208 | { | |
73869dc2 DE |
12209 | const struct dwp_hash_table *dwp_htab = |
12210 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12211 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12212 | const char *kind = is_debug_types ? "TU" : "CU"; |
12213 | struct dwo_file *dwo_file; | |
12214 | struct dwo_unit *dwo_unit; | |
d2854d8d | 12215 | struct virtual_v2_or_v5_dwo_sections sections; |
73869dc2 | 12216 | void **dwo_file_slot; |
73869dc2 DE |
12217 | int i; |
12218 | ||
12219 | gdb_assert (dwp_file->version == 2); | |
12220 | ||
6f738b01 SM |
12221 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V2 file: %s", |
12222 | kind, pulongest (unit_index), hex_string (signature), | |
12223 | dwp_file->name); | |
73869dc2 DE |
12224 | |
12225 | /* Fetch the section offsets of this DWO unit. */ | |
12226 | ||
12227 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12228 | |
12229 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12230 | { | |
12231 | uint32_t offset = read_4_bytes (dbfd, | |
12232 | dwp_htab->section_pool.v2.offsets | |
12233 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12234 | + i) | |
12235 | * sizeof (uint32_t))); | |
12236 | uint32_t size = read_4_bytes (dbfd, | |
12237 | dwp_htab->section_pool.v2.sizes | |
12238 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12239 | + i) | |
12240 | * sizeof (uint32_t))); | |
12241 | ||
12242 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12243 | { | |
12244 | case DW_SECT_INFO: | |
12245 | case DW_SECT_TYPES: | |
12246 | sections.info_or_types_offset = offset; | |
12247 | sections.info_or_types_size = size; | |
12248 | break; | |
12249 | case DW_SECT_ABBREV: | |
12250 | sections.abbrev_offset = offset; | |
12251 | sections.abbrev_size = size; | |
12252 | break; | |
12253 | case DW_SECT_LINE: | |
12254 | sections.line_offset = offset; | |
12255 | sections.line_size = size; | |
12256 | break; | |
12257 | case DW_SECT_LOC: | |
12258 | sections.loc_offset = offset; | |
12259 | sections.loc_size = size; | |
12260 | break; | |
12261 | case DW_SECT_STR_OFFSETS: | |
12262 | sections.str_offsets_offset = offset; | |
12263 | sections.str_offsets_size = size; | |
12264 | break; | |
12265 | case DW_SECT_MACINFO: | |
12266 | sections.macinfo_offset = offset; | |
12267 | sections.macinfo_size = size; | |
12268 | break; | |
12269 | case DW_SECT_MACRO: | |
12270 | sections.macro_offset = offset; | |
12271 | sections.macro_size = size; | |
12272 | break; | |
12273 | } | |
12274 | } | |
12275 | ||
12276 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12277 | have dwo_unit "live" in that. At least for now. | |
12278 | ||
12279 | The DWP file can be made up of a random collection of CUs and TUs. | |
12280 | However, for each CU + set of TUs that came from the same original DWO | |
12281 | file, we can combine them back into a virtual DWO file to save space | |
12282 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12283 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12284 | ||
791afaa2 TT |
12285 | std::string virtual_dwo_name = |
12286 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12287 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12288 | (long) (sections.line_size ? sections.line_offset : 0), | |
12289 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12290 | (long) (sections.str_offsets_size | |
12291 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12292 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12293 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12294 | comp_dir); |
73869dc2 DE |
12295 | /* Create one if necessary. */ |
12296 | if (*dwo_file_slot == NULL) | |
12297 | { | |
6f738b01 SM |
12298 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12299 | virtual_dwo_name.c_str ()); | |
12300 | ||
51ac9db5 | 12301 | dwo_file = new struct dwo_file; |
976ca316 | 12302 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
73869dc2 DE |
12303 | dwo_file->comp_dir = comp_dir; |
12304 | dwo_file->sections.abbrev = | |
d2854d8d CT |
12305 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.abbrev, |
12306 | sections.abbrev_offset, | |
12307 | sections.abbrev_size); | |
73869dc2 | 12308 | dwo_file->sections.line = |
d2854d8d CT |
12309 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.line, |
12310 | sections.line_offset, | |
12311 | sections.line_size); | |
73869dc2 | 12312 | dwo_file->sections.loc = |
d2854d8d CT |
12313 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.loc, |
12314 | sections.loc_offset, sections.loc_size); | |
73869dc2 | 12315 | dwo_file->sections.macinfo = |
d2854d8d CT |
12316 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macinfo, |
12317 | sections.macinfo_offset, | |
12318 | sections.macinfo_size); | |
73869dc2 | 12319 | dwo_file->sections.macro = |
d2854d8d CT |
12320 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macro, |
12321 | sections.macro_offset, | |
12322 | sections.macro_size); | |
73869dc2 | 12323 | dwo_file->sections.str_offsets = |
d2854d8d CT |
12324 | create_dwp_v2_or_v5_section (per_objfile, |
12325 | &dwp_file->sections.str_offsets, | |
12326 | sections.str_offsets_offset, | |
12327 | sections.str_offsets_size); | |
73869dc2 DE |
12328 | /* The "str" section is global to the entire DWP file. */ |
12329 | dwo_file->sections.str = dwp_file->sections.str; | |
12330 | /* The info or types section is assigned below to dwo_unit, | |
12331 | there's no need to record it in dwo_file. | |
12332 | Also, we can't simply record type sections in dwo_file because | |
12333 | we record a pointer into the vector in dwo_unit. As we collect more | |
12334 | types we'll grow the vector and eventually have to reallocate space | |
12335 | for it, invalidating all copies of pointers into the previous | |
12336 | contents. */ | |
12337 | *dwo_file_slot = dwo_file; | |
12338 | } | |
12339 | else | |
12340 | { | |
6f738b01 SM |
12341 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12342 | virtual_dwo_name.c_str ()); | |
12343 | ||
9a3c8263 | 12344 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12345 | } |
73869dc2 | 12346 | |
976ca316 | 12347 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
73869dc2 DE |
12348 | dwo_unit->dwo_file = dwo_file; |
12349 | dwo_unit->signature = signature; | |
8d749320 | 12350 | dwo_unit->section = |
976ca316 | 12351 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
d2854d8d | 12352 | *dwo_unit->section = create_dwp_v2_or_v5_section |
dda83cd7 | 12353 | (per_objfile, |
d2854d8d CT |
12354 | is_debug_types |
12355 | ? &dwp_file->sections.types | |
12356 | : &dwp_file->sections.info, | |
12357 | sections.info_or_types_offset, | |
12358 | sections.info_or_types_size); | |
12359 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12360 | ||
12361 | return dwo_unit; | |
12362 | } | |
12363 | ||
12364 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12365 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12366 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12367 | This is for DWP version 5 files. */ | |
12368 | ||
12369 | static struct dwo_unit * | |
12370 | create_dwo_unit_in_dwp_v5 (dwarf2_per_objfile *per_objfile, | |
12371 | struct dwp_file *dwp_file, | |
12372 | uint32_t unit_index, | |
12373 | const char *comp_dir, | |
12374 | ULONGEST signature, int is_debug_types) | |
12375 | { | |
12376 | const struct dwp_hash_table *dwp_htab | |
12377 | = is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12378 | bfd *dbfd = dwp_file->dbfd.get (); | |
12379 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12380 | struct dwo_file *dwo_file; | |
12381 | struct dwo_unit *dwo_unit; | |
12382 | struct virtual_v2_or_v5_dwo_sections sections {}; | |
12383 | void **dwo_file_slot; | |
12384 | ||
12385 | gdb_assert (dwp_file->version == 5); | |
12386 | ||
6f738b01 SM |
12387 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V5 file: %s", |
12388 | kind, pulongest (unit_index), hex_string (signature), | |
12389 | dwp_file->name); | |
d2854d8d CT |
12390 | |
12391 | /* Fetch the section offsets of this DWO unit. */ | |
12392 | ||
12393 | /* memset (§ions, 0, sizeof (sections)); */ | |
12394 | ||
12395 | for (int i = 0; i < dwp_htab->nr_columns; ++i) | |
12396 | { | |
12397 | uint32_t offset = read_4_bytes (dbfd, | |
dda83cd7 SM |
12398 | dwp_htab->section_pool.v5.offsets |
12399 | + (((unit_index - 1) | |
12400 | * dwp_htab->nr_columns | |
12401 | + i) | |
12402 | * sizeof (uint32_t))); | |
d2854d8d | 12403 | uint32_t size = read_4_bytes (dbfd, |
dda83cd7 SM |
12404 | dwp_htab->section_pool.v5.sizes |
12405 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12406 | + i) | |
12407 | * sizeof (uint32_t))); | |
d2854d8d CT |
12408 | |
12409 | switch (dwp_htab->section_pool.v5.section_ids[i]) | |
dda83cd7 SM |
12410 | { |
12411 | case DW_SECT_ABBREV_V5: | |
12412 | sections.abbrev_offset = offset; | |
12413 | sections.abbrev_size = size; | |
12414 | break; | |
12415 | case DW_SECT_INFO_V5: | |
12416 | sections.info_or_types_offset = offset; | |
12417 | sections.info_or_types_size = size; | |
12418 | break; | |
12419 | case DW_SECT_LINE_V5: | |
12420 | sections.line_offset = offset; | |
12421 | sections.line_size = size; | |
12422 | break; | |
12423 | case DW_SECT_LOCLISTS_V5: | |
12424 | sections.loclists_offset = offset; | |
12425 | sections.loclists_size = size; | |
12426 | break; | |
12427 | case DW_SECT_MACRO_V5: | |
12428 | sections.macro_offset = offset; | |
12429 | sections.macro_size = size; | |
12430 | break; | |
12431 | case DW_SECT_RNGLISTS_V5: | |
12432 | sections.rnglists_offset = offset; | |
12433 | sections.rnglists_size = size; | |
12434 | break; | |
12435 | case DW_SECT_STR_OFFSETS_V5: | |
12436 | sections.str_offsets_offset = offset; | |
12437 | sections.str_offsets_size = size; | |
12438 | break; | |
12439 | case DW_SECT_RESERVED_V5: | |
12440 | default: | |
12441 | break; | |
12442 | } | |
d2854d8d CT |
12443 | } |
12444 | ||
12445 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12446 | have dwo_unit "live" in that. At least for now. | |
12447 | ||
12448 | The DWP file can be made up of a random collection of CUs and TUs. | |
12449 | However, for each CU + set of TUs that came from the same original DWO | |
12450 | file, we can combine them back into a virtual DWO file to save space | |
12451 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12452 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12453 | ||
12454 | std::string virtual_dwo_name = | |
12455 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld-%ld-%ld", | |
dda83cd7 SM |
12456 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), |
12457 | (long) (sections.line_size ? sections.line_offset : 0), | |
12458 | (long) (sections.loclists_size ? sections.loclists_offset : 0), | |
12459 | (long) (sections.str_offsets_size | |
12460 | ? sections.str_offsets_offset : 0), | |
12461 | (long) (sections.macro_size ? sections.macro_offset : 0), | |
12462 | (long) (sections.rnglists_size ? sections.rnglists_offset: 0)); | |
d2854d8d CT |
12463 | /* Can we use an existing virtual DWO file? */ |
12464 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, | |
dda83cd7 SM |
12465 | virtual_dwo_name.c_str (), |
12466 | comp_dir); | |
d2854d8d CT |
12467 | /* Create one if necessary. */ |
12468 | if (*dwo_file_slot == NULL) | |
12469 | { | |
6f738b01 SM |
12470 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12471 | virtual_dwo_name.c_str ()); | |
12472 | ||
d2854d8d CT |
12473 | dwo_file = new struct dwo_file; |
12474 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); | |
12475 | dwo_file->comp_dir = comp_dir; | |
12476 | dwo_file->sections.abbrev = | |
dda83cd7 SM |
12477 | create_dwp_v2_or_v5_section (per_objfile, |
12478 | &dwp_file->sections.abbrev, | |
12479 | sections.abbrev_offset, | |
12480 | sections.abbrev_size); | |
d2854d8d | 12481 | dwo_file->sections.line = |
dda83cd7 SM |
12482 | create_dwp_v2_or_v5_section (per_objfile, |
12483 | &dwp_file->sections.line, | |
12484 | sections.line_offset, sections.line_size); | |
d2854d8d | 12485 | dwo_file->sections.macro = |
dda83cd7 SM |
12486 | create_dwp_v2_or_v5_section (per_objfile, |
12487 | &dwp_file->sections.macro, | |
12488 | sections.macro_offset, | |
12489 | sections.macro_size); | |
d2854d8d | 12490 | dwo_file->sections.loclists = |
dda83cd7 SM |
12491 | create_dwp_v2_or_v5_section (per_objfile, |
12492 | &dwp_file->sections.loclists, | |
12493 | sections.loclists_offset, | |
12494 | sections.loclists_size); | |
d2854d8d | 12495 | dwo_file->sections.rnglists = |
dda83cd7 SM |
12496 | create_dwp_v2_or_v5_section (per_objfile, |
12497 | &dwp_file->sections.rnglists, | |
12498 | sections.rnglists_offset, | |
12499 | sections.rnglists_size); | |
d2854d8d | 12500 | dwo_file->sections.str_offsets = |
dda83cd7 SM |
12501 | create_dwp_v2_or_v5_section (per_objfile, |
12502 | &dwp_file->sections.str_offsets, | |
12503 | sections.str_offsets_offset, | |
12504 | sections.str_offsets_size); | |
d2854d8d CT |
12505 | /* The "str" section is global to the entire DWP file. */ |
12506 | dwo_file->sections.str = dwp_file->sections.str; | |
12507 | /* The info or types section is assigned below to dwo_unit, | |
dda83cd7 SM |
12508 | there's no need to record it in dwo_file. |
12509 | Also, we can't simply record type sections in dwo_file because | |
12510 | we record a pointer into the vector in dwo_unit. As we collect more | |
12511 | types we'll grow the vector and eventually have to reallocate space | |
12512 | for it, invalidating all copies of pointers into the previous | |
12513 | contents. */ | |
d2854d8d CT |
12514 | *dwo_file_slot = dwo_file; |
12515 | } | |
12516 | else | |
12517 | { | |
6f738b01 SM |
12518 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12519 | virtual_dwo_name.c_str ()); | |
12520 | ||
d2854d8d CT |
12521 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
12522 | } | |
12523 | ||
12524 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); | |
12525 | dwo_unit->dwo_file = dwo_file; | |
12526 | dwo_unit->signature = signature; | |
12527 | dwo_unit->section | |
12528 | = XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); | |
12529 | *dwo_unit->section = create_dwp_v2_or_v5_section (per_objfile, | |
dda83cd7 SM |
12530 | &dwp_file->sections.info, |
12531 | sections.info_or_types_offset, | |
12532 | sections.info_or_types_size); | |
73869dc2 DE |
12533 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
12534 | ||
12535 | return dwo_unit; | |
12536 | } | |
12537 | ||
57d63ce2 DE |
12538 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12539 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12540 | |
12541 | static struct dwo_unit * | |
976ca316 | 12542 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12543 | struct dwp_file *dwp_file, const char *comp_dir, |
57d63ce2 | 12544 | ULONGEST signature, int is_debug_types) |
80626a55 | 12545 | { |
57d63ce2 DE |
12546 | const struct dwp_hash_table *dwp_htab = |
12547 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12548 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12549 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12550 | uint32_t hash = signature & mask; |
12551 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12552 | unsigned int i; | |
12553 | void **slot; | |
870f88f7 | 12554 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12555 | |
12556 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12557 | find_dwo_cu.signature = signature; | |
19ac8c2e | 12558 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
12559 | ? dwp_file->loaded_tus.get () |
12560 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 12561 | &find_dwo_cu, INSERT); |
80626a55 DE |
12562 | |
12563 | if (*slot != NULL) | |
9a3c8263 | 12564 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12565 | |
12566 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12567 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12568 | { |
12569 | ULONGEST signature_in_table; | |
12570 | ||
12571 | signature_in_table = | |
57d63ce2 | 12572 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12573 | if (signature_in_table == signature) |
12574 | { | |
57d63ce2 DE |
12575 | uint32_t unit_index = |
12576 | read_4_bytes (dbfd, | |
12577 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12578 | |
73869dc2 DE |
12579 | if (dwp_file->version == 1) |
12580 | { | |
976ca316 SM |
12581 | *slot = create_dwo_unit_in_dwp_v1 (per_objfile, dwp_file, |
12582 | unit_index, comp_dir, | |
12583 | signature, is_debug_types); | |
73869dc2 | 12584 | } |
d2854d8d | 12585 | else if (dwp_file->version == 2) |
73869dc2 | 12586 | { |
976ca316 SM |
12587 | *slot = create_dwo_unit_in_dwp_v2 (per_objfile, dwp_file, |
12588 | unit_index, comp_dir, | |
12589 | signature, is_debug_types); | |
73869dc2 | 12590 | } |
d2854d8d CT |
12591 | else /* version == 5 */ |
12592 | { | |
12593 | *slot = create_dwo_unit_in_dwp_v5 (per_objfile, dwp_file, | |
12594 | unit_index, comp_dir, | |
12595 | signature, is_debug_types); | |
12596 | } | |
9a3c8263 | 12597 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12598 | } |
12599 | if (signature_in_table == 0) | |
12600 | return NULL; | |
12601 | hash = (hash + hash2) & mask; | |
12602 | } | |
12603 | ||
12604 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12605 | " [in module %s]"), | |
12606 | dwp_file->name); | |
12607 | } | |
12608 | ||
ab5088bf | 12609 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12610 | Open the file specified by FILE_NAME and hand it off to BFD for |
12611 | preliminary analysis. Return a newly initialized bfd *, which | |
12612 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12613 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12614 | SEARCH_CWD is true if the current directory is to be searched. |
12615 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12616 | If successful, the file is added to the bfd include table of the |
12617 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12618 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12619 | NOTE: This function is derived from symfile_bfd_open. */ |
12620 | ||
192b62ce | 12621 | static gdb_bfd_ref_ptr |
976ca316 | 12622 | try_open_dwop_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12623 | const char *file_name, int is_dwp, int search_cwd) |
3019eac3 | 12624 | { |
24b9144d | 12625 | int desc; |
9c02c129 DE |
12626 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12627 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12628 | to debug_file_directory. */ | |
e0cc99a6 | 12629 | const char *search_path; |
9c02c129 DE |
12630 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12631 | ||
e0cc99a6 | 12632 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12633 | if (search_cwd) |
12634 | { | |
12635 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12636 | { |
12637 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12638 | debug_file_directory, | |
12639 | (char *) NULL)); | |
12640 | search_path = search_path_holder.get (); | |
12641 | } | |
6ac97d4c | 12642 | else |
e0cc99a6 | 12643 | search_path = "."; |
6ac97d4c | 12644 | } |
9c02c129 | 12645 | else |
e0cc99a6 | 12646 | search_path = debug_file_directory; |
3019eac3 | 12647 | |
24b9144d | 12648 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12649 | if (is_dwp) |
12650 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12651 | |
12652 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12653 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12654 | O_RDONLY | O_BINARY, &absolute_name); |
12655 | if (desc < 0) | |
12656 | return NULL; | |
12657 | ||
e0cc99a6 TT |
12658 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12659 | gnutarget, desc)); | |
9c02c129 DE |
12660 | if (sym_bfd == NULL) |
12661 | return NULL; | |
192b62ce | 12662 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12663 | |
192b62ce TT |
12664 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12665 | return NULL; | |
3019eac3 | 12666 | |
13aaf454 DE |
12667 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12668 | This is important because things like demangled_names_hash lives in the | |
12669 | objfile's per_bfd space and may have references to things like symbol | |
12670 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
976ca316 | 12671 | gdb_bfd_record_inclusion (per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12672 | |
3019eac3 DE |
12673 | return sym_bfd; |
12674 | } | |
12675 | ||
ab5088bf | 12676 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12677 | COMP_DIR is the DW_AT_comp_dir attribute. |
12678 | The result is the bfd handle of the file. | |
12679 | If there is a problem finding or opening the file, return NULL. | |
12680 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12681 | same as symfile_bfd_open. */ | |
12682 | ||
192b62ce | 12683 | static gdb_bfd_ref_ptr |
976ca316 | 12684 | open_dwo_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12685 | const char *file_name, const char *comp_dir) |
3019eac3 | 12686 | { |
80626a55 | 12687 | if (IS_ABSOLUTE_PATH (file_name)) |
976ca316 | 12688 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12689 | 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
12690 | |
12691 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12692 | ||
12693 | if (comp_dir != NULL) | |
12694 | { | |
43816ebc TT |
12695 | gdb::unique_xmalloc_ptr<char> path_to_try |
12696 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12697 | |
12698 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12699 | search path, which seems useful. */ | |
976ca316 | 12700 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, path_to_try.get (), |
ed2dc618 | 12701 | 0 /*is_dwp*/, |
192b62ce | 12702 | 1 /*search_cwd*/)); |
3019eac3 DE |
12703 | if (abfd != NULL) |
12704 | return abfd; | |
12705 | } | |
12706 | ||
12707 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12708 | is a list of paths. */ | |
12709 | ||
12710 | if (*debug_file_directory == '\0') | |
12711 | return NULL; | |
12712 | ||
976ca316 | 12713 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12714 | 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
12715 | } |
12716 | ||
80626a55 DE |
12717 | /* This function is mapped across the sections and remembers the offset and |
12718 | size of each of the DWO debugging sections we are interested in. */ | |
12719 | ||
12720 | static void | |
5bb6e9dd TT |
12721 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, |
12722 | dwo_sections *dwo_sections) | |
80626a55 | 12723 | { |
80626a55 DE |
12724 | const struct dwop_section_names *names = &dwop_section_names; |
12725 | ||
12726 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12727 | { | |
049412e3 | 12728 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12729 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12730 | } |
12731 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12732 | { | |
049412e3 | 12733 | dwo_sections->info.s.section = sectp; |
fd361982 | 12734 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12735 | } |
12736 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12737 | { | |
049412e3 | 12738 | dwo_sections->line.s.section = sectp; |
fd361982 | 12739 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12740 | } |
12741 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12742 | { | |
049412e3 | 12743 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12744 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12745 | } |
41144253 | 12746 | else if (section_is_p (sectp->name, &names->loclists_dwo)) |
12747 | { | |
12748 | dwo_sections->loclists.s.section = sectp; | |
12749 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12750 | } | |
80626a55 DE |
12751 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) |
12752 | { | |
049412e3 | 12753 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12754 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12755 | } |
12756 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12757 | { | |
049412e3 | 12758 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12759 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 | 12760 | } |
d0ce17d8 CT |
12761 | else if (section_is_p (sectp->name, &names->rnglists_dwo)) |
12762 | { | |
12763 | dwo_sections->rnglists.s.section = sectp; | |
12764 | dwo_sections->rnglists.size = bfd_section_size (sectp); | |
12765 | } | |
80626a55 DE |
12766 | else if (section_is_p (sectp->name, &names->str_dwo)) |
12767 | { | |
049412e3 | 12768 | dwo_sections->str.s.section = sectp; |
fd361982 | 12769 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12770 | } |
12771 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12772 | { | |
049412e3 | 12773 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12774 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12775 | } |
12776 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12777 | { | |
12778 | struct dwarf2_section_info type_section; | |
12779 | ||
12780 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12781 | type_section.s.section = sectp; |
fd361982 | 12782 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12783 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12784 | } |
12785 | } | |
12786 | ||
ab5088bf | 12787 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12788 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12789 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12790 | |
12791 | static struct dwo_file * | |
4ab09049 SM |
12792 | open_and_init_dwo_file (dwarf2_cu *cu, const char *dwo_name, |
12793 | const char *comp_dir) | |
3019eac3 | 12794 | { |
976ca316 | 12795 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 12796 | |
976ca316 | 12797 | gdb_bfd_ref_ptr dbfd = open_dwo_file (per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12798 | if (dbfd == NULL) |
12799 | { | |
6f738b01 SM |
12800 | dwarf_read_debug_printf ("DWO file not found: %s", dwo_name); |
12801 | ||
80626a55 DE |
12802 | return NULL; |
12803 | } | |
263db9a1 | 12804 | |
51ac9db5 | 12805 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12806 | dwo_file->dwo_name = dwo_name; |
12807 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12808 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12809 | |
5bb6e9dd TT |
12810 | for (asection *sec : gdb_bfd_sections (dwo_file->dbfd)) |
12811 | dwarf2_locate_dwo_sections (dwo_file->dbfd.get (), sec, | |
12812 | &dwo_file->sections); | |
3019eac3 | 12813 | |
976ca316 SM |
12814 | create_cus_hash_table (per_objfile, cu, *dwo_file, dwo_file->sections.info, |
12815 | dwo_file->cus); | |
3019eac3 | 12816 | |
d2854d8d CT |
12817 | if (cu->per_cu->dwarf_version < 5) |
12818 | { | |
12819 | create_debug_types_hash_table (per_objfile, dwo_file.get (), | |
12820 | dwo_file->sections.types, dwo_file->tus); | |
12821 | } | |
12822 | else | |
12823 | { | |
12824 | create_debug_type_hash_table (per_objfile, dwo_file.get (), | |
12825 | &dwo_file->sections.info, dwo_file->tus, | |
12826 | rcuh_kind::TYPE); | |
12827 | } | |
3019eac3 | 12828 | |
6f738b01 | 12829 | dwarf_read_debug_printf ("DWO file found: %s", dwo_name); |
80626a55 | 12830 | |
263db9a1 | 12831 | return dwo_file.release (); |
3019eac3 DE |
12832 | } |
12833 | ||
80626a55 | 12834 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12835 | size of each of the DWP debugging sections common to version 1 and 2 that |
12836 | we are interested in. */ | |
3019eac3 | 12837 | |
80626a55 | 12838 | static void |
73869dc2 | 12839 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
5bb6e9dd | 12840 | dwp_file *dwp_file) |
3019eac3 | 12841 | { |
80626a55 DE |
12842 | const struct dwop_section_names *names = &dwop_section_names; |
12843 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12844 | |
80626a55 | 12845 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12846 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12847 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12848 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12849 | |
80626a55 DE |
12850 | /* Look for specific sections that we need. */ |
12851 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12852 | { | |
049412e3 | 12853 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12854 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12855 | } |
12856 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12857 | { | |
049412e3 | 12858 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12859 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12860 | } |
12861 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12862 | { | |
049412e3 | 12863 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12864 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12865 | } |
12866 | } | |
3019eac3 | 12867 | |
73869dc2 DE |
12868 | /* This function is mapped across the sections and remembers the offset and |
12869 | size of each of the DWP version 2 debugging sections that we are interested | |
12870 | in. This is split into a separate function because we don't know if we | |
d2854d8d | 12871 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ |
73869dc2 DE |
12872 | |
12873 | static void | |
12874 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12875 | { | |
9a3c8263 | 12876 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12877 | const struct dwop_section_names *names = &dwop_section_names; |
12878 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12879 | ||
12880 | /* Record the ELF section number for later lookup: this is what the | |
12881 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12882 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12883 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12884 | ||
12885 | /* Look for specific sections that we need. */ | |
12886 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12887 | { | |
049412e3 | 12888 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12889 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12890 | } |
12891 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12892 | { | |
049412e3 | 12893 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12894 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12895 | } |
12896 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12897 | { | |
049412e3 | 12898 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12899 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12900 | } |
12901 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12902 | { | |
049412e3 | 12903 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12904 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12905 | } |
12906 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12907 | { | |
049412e3 | 12908 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12909 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
12910 | } |
12911 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12912 | { | |
049412e3 | 12913 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12914 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
12915 | } |
12916 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12917 | { | |
049412e3 | 12918 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12919 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
12920 | } |
12921 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12922 | { | |
049412e3 | 12923 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12924 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12925 | } |
12926 | } | |
12927 | ||
d2854d8d CT |
12928 | /* This function is mapped across the sections and remembers the offset and |
12929 | size of each of the DWP version 5 debugging sections that we are interested | |
12930 | in. This is split into a separate function because we don't know if we | |
12931 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ | |
12932 | ||
12933 | static void | |
12934 | dwarf2_locate_v5_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12935 | { | |
12936 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; | |
12937 | const struct dwop_section_names *names = &dwop_section_names; | |
12938 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12939 | ||
12940 | /* Record the ELF section number for later lookup: this is what the | |
12941 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12942 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12943 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12944 | ||
12945 | /* Look for specific sections that we need. */ | |
12946 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12947 | { | |
12948 | dwp_file->sections.abbrev.s.section = sectp; | |
12949 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); | |
12950 | } | |
12951 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12952 | { | |
12953 | dwp_file->sections.info.s.section = sectp; | |
12954 | dwp_file->sections.info.size = bfd_section_size (sectp); | |
12955 | } | |
12956 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12957 | { | |
12958 | dwp_file->sections.line.s.section = sectp; | |
12959 | dwp_file->sections.line.size = bfd_section_size (sectp); | |
12960 | } | |
12961 | else if (section_is_p (sectp->name, &names->loclists_dwo)) | |
12962 | { | |
12963 | dwp_file->sections.loclists.s.section = sectp; | |
12964 | dwp_file->sections.loclists.size = bfd_section_size (sectp); | |
12965 | } | |
12966 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12967 | { | |
12968 | dwp_file->sections.macro.s.section = sectp; | |
12969 | dwp_file->sections.macro.size = bfd_section_size (sectp); | |
12970 | } | |
12971 | else if (section_is_p (sectp->name, &names->rnglists_dwo)) | |
12972 | { | |
12973 | dwp_file->sections.rnglists.s.section = sectp; | |
12974 | dwp_file->sections.rnglists.size = bfd_section_size (sectp); | |
12975 | } | |
12976 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12977 | { | |
12978 | dwp_file->sections.str_offsets.s.section = sectp; | |
12979 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); | |
12980 | } | |
12981 | } | |
12982 | ||
80626a55 | 12983 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12984 | |
80626a55 DE |
12985 | static hashval_t |
12986 | hash_dwp_loaded_cutus (const void *item) | |
12987 | { | |
9a3c8263 | 12988 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12989 | |
80626a55 DE |
12990 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12991 | return dwo_unit->signature; | |
3019eac3 DE |
12992 | } |
12993 | ||
80626a55 | 12994 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12995 | |
80626a55 DE |
12996 | static int |
12997 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 12998 | { |
9a3c8263 SM |
12999 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13000 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13001 | |
80626a55 DE |
13002 | return dua->signature == dub->signature; |
13003 | } | |
3019eac3 | 13004 | |
80626a55 | 13005 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13006 | |
48b490f2 | 13007 | static htab_up |
298e9637 | 13008 | allocate_dwp_loaded_cutus_table () |
80626a55 | 13009 | { |
48b490f2 TT |
13010 | return htab_up (htab_create_alloc (3, |
13011 | hash_dwp_loaded_cutus, | |
13012 | eq_dwp_loaded_cutus, | |
13013 | NULL, xcalloc, xfree)); | |
80626a55 | 13014 | } |
3019eac3 | 13015 | |
ab5088bf DE |
13016 | /* Try to open DWP file FILE_NAME. |
13017 | The result is the bfd handle of the file. | |
13018 | If there is a problem finding or opening the file, return NULL. | |
13019 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13020 | same as symfile_bfd_open. */ | |
13021 | ||
192b62ce | 13022 | static gdb_bfd_ref_ptr |
976ca316 | 13023 | open_dwp_file (dwarf2_per_objfile *per_objfile, const char *file_name) |
ab5088bf | 13024 | { |
976ca316 | 13025 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 13026 | 1 /*is_dwp*/, |
192b62ce | 13027 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13028 | if (abfd != NULL) |
13029 | return abfd; | |
13030 | ||
13031 | /* Work around upstream bug 15652. | |
13032 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13033 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13034 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13035 | of the executable's path may have discarded the needed info. | |
13036 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13037 | .gnu_debuglink, but that doesn't exist yet.] | |
13038 | Strip the directory from FILE_NAME and search again. */ | |
13039 | if (*debug_file_directory != '\0') | |
13040 | { | |
13041 | /* Don't implicitly search the current directory here. | |
13042 | If the user wants to search "." to handle this case, | |
13043 | it must be added to debug-file-directory. */ | |
976ca316 SM |
13044 | return try_open_dwop_file (per_objfile, lbasename (file_name), |
13045 | 1 /*is_dwp*/, | |
6ac97d4c DE |
13046 | 0 /*search_cwd*/); |
13047 | } | |
13048 | ||
13049 | return NULL; | |
ab5088bf DE |
13050 | } |
13051 | ||
80626a55 DE |
13052 | /* Initialize the use of the DWP file for the current objfile. |
13053 | By convention the name of the DWP file is ${objfile}.dwp. | |
13054 | The result is NULL if it can't be found. */ | |
a766d390 | 13055 | |
400174b1 | 13056 | static std::unique_ptr<struct dwp_file> |
976ca316 | 13057 | open_and_init_dwp_file (dwarf2_per_objfile *per_objfile) |
80626a55 | 13058 | { |
976ca316 | 13059 | struct objfile *objfile = per_objfile->objfile; |
80626a55 | 13060 | |
82bf32bc JK |
13061 | /* Try to find first .dwp for the binary file before any symbolic links |
13062 | resolving. */ | |
6c447423 DE |
13063 | |
13064 | /* If the objfile is a debug file, find the name of the real binary | |
13065 | file and get the name of dwp file from there. */ | |
d721ba37 | 13066 | std::string dwp_name; |
6c447423 DE |
13067 | if (objfile->separate_debug_objfile_backlink != NULL) |
13068 | { | |
13069 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13070 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13071 | |
d721ba37 | 13072 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13073 | } |
13074 | else | |
d721ba37 PA |
13075 | dwp_name = objfile->original_name; |
13076 | ||
13077 | dwp_name += ".dwp"; | |
80626a55 | 13078 | |
976ca316 | 13079 | gdb_bfd_ref_ptr dbfd (open_dwp_file (per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13080 | if (dbfd == NULL |
13081 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13082 | { | |
13083 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13084 | dwp_name = objfile_name (objfile); |
13085 | dwp_name += ".dwp"; | |
976ca316 | 13086 | dbfd = open_dwp_file (per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13087 | } |
13088 | ||
80626a55 DE |
13089 | if (dbfd == NULL) |
13090 | { | |
6f738b01 SM |
13091 | dwarf_read_debug_printf ("DWP file not found: %s", dwp_name.c_str ()); |
13092 | ||
400174b1 | 13093 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 13094 | } |
400174b1 TT |
13095 | |
13096 | const char *name = bfd_get_filename (dbfd.get ()); | |
13097 | std::unique_ptr<struct dwp_file> dwp_file | |
13098 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 13099 | |
0a0f4c01 | 13100 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 | 13101 | dwp_file->elf_sections = |
976ca316 | 13102 | OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
80626a55 DE |
13103 | dwp_file->num_sections, asection *); |
13104 | ||
5bb6e9dd TT |
13105 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
13106 | dwarf2_locate_common_dwp_sections (dwp_file->dbfd.get (), sec, | |
13107 | dwp_file.get ()); | |
80626a55 | 13108 | |
976ca316 | 13109 | dwp_file->cus = create_dwp_hash_table (per_objfile, dwp_file.get (), 0); |
80626a55 | 13110 | |
976ca316 | 13111 | dwp_file->tus = create_dwp_hash_table (per_objfile, dwp_file.get (), 1); |
80626a55 | 13112 | |
73869dc2 | 13113 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13114 | if (dwp_file->cus && dwp_file->tus |
13115 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13116 | { |
13117 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13118 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13119 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13120 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13121 | " TU version %s [in DWP file %s]"), | |
13122 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13123 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13124 | } |
08302ed2 DE |
13125 | |
13126 | if (dwp_file->cus) | |
13127 | dwp_file->version = dwp_file->cus->version; | |
13128 | else if (dwp_file->tus) | |
13129 | dwp_file->version = dwp_file->tus->version; | |
13130 | else | |
13131 | dwp_file->version = 2; | |
73869dc2 | 13132 | |
5bb6e9dd TT |
13133 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
13134 | { | |
13135 | if (dwp_file->version == 2) | |
13136 | dwarf2_locate_v2_dwp_sections (dwp_file->dbfd.get (), sec, | |
13137 | dwp_file.get ()); | |
13138 | else | |
13139 | dwarf2_locate_v5_dwp_sections (dwp_file->dbfd.get (), sec, | |
13140 | dwp_file.get ()); | |
13141 | } | |
73869dc2 | 13142 | |
298e9637 SM |
13143 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
13144 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 13145 | |
6f738b01 SM |
13146 | dwarf_read_debug_printf ("DWP file found: %s", dwp_file->name); |
13147 | dwarf_read_debug_printf (" %s CUs, %s TUs", | |
13148 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13149 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13150 | |
13151 | return dwp_file; | |
3019eac3 | 13152 | } |
c906108c | 13153 | |
ab5088bf DE |
13154 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13155 | ||
13156 | static struct dwp_file * | |
976ca316 | 13157 | get_dwp_file (dwarf2_per_objfile *per_objfile) |
ab5088bf | 13158 | { |
976ca316 | 13159 | if (!per_objfile->per_bfd->dwp_checked) |
ab5088bf | 13160 | { |
976ca316 SM |
13161 | per_objfile->per_bfd->dwp_file = open_and_init_dwp_file (per_objfile); |
13162 | per_objfile->per_bfd->dwp_checked = 1; | |
ab5088bf | 13163 | } |
976ca316 | 13164 | return per_objfile->per_bfd->dwp_file.get (); |
ab5088bf DE |
13165 | } |
13166 | ||
80626a55 DE |
13167 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13168 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13169 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13170 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13171 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13172 | ||
13173 | This is called, for example, when wanting to read a variable with a | |
13174 | complex location. Therefore we don't want to do file i/o for every call. | |
13175 | Therefore we don't want to look for a DWO file on every call. | |
13176 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13177 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13178 | for a DWO file. | |
13179 | ||
1c658ad5 | 13180 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13181 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13182 | |
3019eac3 | 13183 | static struct dwo_unit * |
4ab09049 | 13184 | lookup_dwo_cutu (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 | 13185 | ULONGEST signature, int is_debug_types) |
3019eac3 | 13186 | { |
976ca316 SM |
13187 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13188 | struct objfile *objfile = per_objfile->objfile; | |
80626a55 DE |
13189 | const char *kind = is_debug_types ? "TU" : "CU"; |
13190 | void **dwo_file_slot; | |
3019eac3 | 13191 | struct dwo_file *dwo_file; |
80626a55 | 13192 | struct dwp_file *dwp_file; |
cb1df416 | 13193 | |
6a506a2d DE |
13194 | /* First see if there's a DWP file. |
13195 | If we have a DWP file but didn't find the DWO inside it, don't | |
13196 | look for the original DWO file. It makes gdb behave differently | |
13197 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13198 | |
976ca316 | 13199 | dwp_file = get_dwp_file (per_objfile); |
80626a55 | 13200 | if (dwp_file != NULL) |
cf2c3c16 | 13201 | { |
80626a55 DE |
13202 | const struct dwp_hash_table *dwp_htab = |
13203 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13204 | ||
13205 | if (dwp_htab != NULL) | |
13206 | { | |
13207 | struct dwo_unit *dwo_cutu = | |
976ca316 SM |
13208 | lookup_dwo_unit_in_dwp (per_objfile, dwp_file, comp_dir, signature, |
13209 | is_debug_types); | |
80626a55 DE |
13210 | |
13211 | if (dwo_cutu != NULL) | |
13212 | { | |
6f738b01 SM |
13213 | dwarf_read_debug_printf ("Virtual DWO %s %s found: @%s", |
13214 | kind, hex_string (signature), | |
13215 | host_address_to_string (dwo_cutu)); | |
13216 | ||
80626a55 DE |
13217 | return dwo_cutu; |
13218 | } | |
13219 | } | |
13220 | } | |
6a506a2d | 13221 | else |
80626a55 | 13222 | { |
6a506a2d | 13223 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13224 | |
976ca316 | 13225 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, dwo_name, comp_dir); |
6a506a2d | 13226 | if (*dwo_file_slot == NULL) |
80626a55 | 13227 | { |
6a506a2d | 13228 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
4ab09049 | 13229 | *dwo_file_slot = open_and_init_dwo_file (cu, dwo_name, comp_dir); |
19c3d4c9 | 13230 | } |
6a506a2d | 13231 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13232 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13233 | |
6a506a2d | 13234 | if (dwo_file != NULL) |
19c3d4c9 | 13235 | { |
6a506a2d DE |
13236 | struct dwo_unit *dwo_cutu = NULL; |
13237 | ||
13238 | if (is_debug_types && dwo_file->tus) | |
13239 | { | |
13240 | struct dwo_unit find_dwo_cutu; | |
13241 | ||
13242 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13243 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 13244 | dwo_cutu |
b0b6a987 TT |
13245 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
13246 | &find_dwo_cutu); | |
6a506a2d | 13247 | } |
33c5cd75 | 13248 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13249 | { |
33c5cd75 DB |
13250 | struct dwo_unit find_dwo_cutu; |
13251 | ||
13252 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13253 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 13254 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 13255 | &find_dwo_cutu); |
6a506a2d DE |
13256 | } |
13257 | ||
13258 | if (dwo_cutu != NULL) | |
13259 | { | |
6f738b01 SM |
13260 | dwarf_read_debug_printf ("DWO %s %s(%s) found: @%s", |
13261 | kind, dwo_name, hex_string (signature), | |
13262 | host_address_to_string (dwo_cutu)); | |
13263 | ||
6a506a2d | 13264 | return dwo_cutu; |
80626a55 DE |
13265 | } |
13266 | } | |
2e276125 | 13267 | } |
9cdd5dbd | 13268 | |
80626a55 DE |
13269 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13270 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13271 | correctly to find the file. */ | |
13272 | ||
6f738b01 SM |
13273 | dwarf_read_debug_printf ("DWO %s %s(%s) not found", |
13274 | kind, dwo_name, hex_string (signature)); | |
3019eac3 | 13275 | |
6656a72d DE |
13276 | /* This is a warning and not a complaint because it can be caused by |
13277 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13278 | { |
13279 | /* Print the name of the DWP file if we looked there, helps the user | |
13280 | better diagnose the problem. */ | |
791afaa2 | 13281 | std::string dwp_text; |
43942612 DE |
13282 | |
13283 | if (dwp_file != NULL) | |
791afaa2 TT |
13284 | dwp_text = string_printf (" [in DWP file %s]", |
13285 | lbasename (dwp_file->name)); | |
43942612 | 13286 | |
9d8780f0 | 13287 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 | 13288 | " [in module %s]"), |
4ab09049 SM |
13289 | kind, dwo_name, hex_string (signature), dwp_text.c_str (), kind, |
13290 | sect_offset_str (cu->per_cu->sect_off), objfile_name (objfile)); | |
43942612 | 13291 | } |
3019eac3 | 13292 | return NULL; |
5fb290d7 DJ |
13293 | } |
13294 | ||
80626a55 DE |
13295 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13296 | See lookup_dwo_cutu_unit for details. */ | |
13297 | ||
13298 | static struct dwo_unit * | |
4ab09049 | 13299 | lookup_dwo_comp_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 DE |
13300 | ULONGEST signature) |
13301 | { | |
4ab09049 SM |
13302 | gdb_assert (!cu->per_cu->is_debug_types); |
13303 | ||
13304 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, signature, 0); | |
80626a55 DE |
13305 | } |
13306 | ||
13307 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13308 | See lookup_dwo_cutu_unit for details. */ | |
13309 | ||
13310 | static struct dwo_unit * | |
4ab09049 | 13311 | lookup_dwo_type_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir) |
80626a55 | 13312 | { |
4ab09049 SM |
13313 | gdb_assert (cu->per_cu->is_debug_types); |
13314 | ||
13315 | signatured_type *sig_type = (signatured_type *) cu->per_cu; | |
13316 | ||
13317 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, sig_type->signature, 1); | |
80626a55 DE |
13318 | } |
13319 | ||
89e63ee4 DE |
13320 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13321 | ||
13322 | static int | |
13323 | queue_and_load_dwo_tu (void **slot, void *info) | |
13324 | { | |
13325 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
d460f660 | 13326 | dwarf2_cu *cu = (dwarf2_cu *) info; |
89e63ee4 | 13327 | ULONGEST signature = dwo_unit->signature; |
d460f660 | 13328 | signatured_type *sig_type = lookup_dwo_signatured_type (cu, signature); |
89e63ee4 DE |
13329 | |
13330 | if (sig_type != NULL) | |
13331 | { | |
13332 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13333 | ||
13334 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13335 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13336 | while processing PER_CU. */ | |
120ce1b5 | 13337 | if (maybe_queue_comp_unit (NULL, sig_cu, cu->per_objfile, cu->language)) |
d460f660 SM |
13338 | load_full_type_unit (sig_cu, cu->per_objfile); |
13339 | cu->per_cu->imported_symtabs_push (sig_cu); | |
89e63ee4 DE |
13340 | } |
13341 | ||
13342 | return 1; | |
13343 | } | |
13344 | ||
1b555f17 | 13345 | /* Queue all TUs contained in the DWO of CU to be read in. |
89e63ee4 DE |
13346 | The DWO may have the only definition of the type, though it may not be |
13347 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13348 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13349 | ||
13350 | static void | |
1b555f17 | 13351 | queue_and_load_all_dwo_tus (dwarf2_cu *cu) |
89e63ee4 DE |
13352 | { |
13353 | struct dwo_unit *dwo_unit; | |
13354 | struct dwo_file *dwo_file; | |
13355 | ||
1b555f17 SM |
13356 | gdb_assert (cu != nullptr); |
13357 | gdb_assert (!cu->per_cu->is_debug_types); | |
13358 | gdb_assert (get_dwp_file (cu->per_objfile) == nullptr); | |
89e63ee4 | 13359 | |
1b555f17 | 13360 | dwo_unit = cu->dwo_unit; |
89e63ee4 DE |
13361 | gdb_assert (dwo_unit != NULL); |
13362 | ||
13363 | dwo_file = dwo_unit->dwo_file; | |
13364 | if (dwo_file->tus != NULL) | |
1b555f17 | 13365 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, cu); |
89e63ee4 DE |
13366 | } |
13367 | ||
3019eac3 | 13368 | /* Read in various DIEs. */ |
348e048f | 13369 | |
d389af10 | 13370 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13371 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13372 | already referenced by DW_AT_abstract_origin from the children of the | |
13373 | current DIE. */ | |
d389af10 JK |
13374 | |
13375 | static void | |
13376 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13377 | { | |
13378 | struct die_info *child_die; | |
791afaa2 | 13379 | sect_offset *offsetp; |
d389af10 JK |
13380 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13381 | struct die_info *origin_die; | |
13382 | /* Iterator of the ORIGIN_DIE children. */ | |
13383 | struct die_info *origin_child_die; | |
d389af10 | 13384 | struct attribute *attr; |
cd02d79d PA |
13385 | struct dwarf2_cu *origin_cu; |
13386 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13387 | |
13388 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13389 | if (!attr) | |
13390 | return; | |
13391 | ||
cd02d79d PA |
13392 | /* Note that following die references may follow to a die in a |
13393 | different cu. */ | |
13394 | ||
13395 | origin_cu = cu; | |
13396 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13397 | ||
13398 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13399 | symbols in. */ | |
13400 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13401 | origin_cu->list_in_scope = cu->list_in_scope; | |
13402 | ||
edb3359d DJ |
13403 | if (die->tag != origin_die->tag |
13404 | && !(die->tag == DW_TAG_inlined_subroutine | |
13405 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13406 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13407 | sect_offset_str (die->sect_off), |
13408 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13409 | |
791afaa2 | 13410 | std::vector<sect_offset> offsets; |
d389af10 | 13411 | |
3ea89b92 PMR |
13412 | for (child_die = die->child; |
13413 | child_die && child_die->tag; | |
436c571c | 13414 | child_die = child_die->sibling) |
3ea89b92 PMR |
13415 | { |
13416 | struct die_info *child_origin_die; | |
13417 | struct dwarf2_cu *child_origin_cu; | |
13418 | ||
13419 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13420 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13421 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13422 | present in the abstract instance but not referenced in the concrete | |
13423 | one. */ | |
216f72a1 | 13424 | if (child_die->tag == DW_TAG_call_site |
dda83cd7 | 13425 | || child_die->tag == DW_TAG_GNU_call_site) |
3ea89b92 PMR |
13426 | continue; |
13427 | ||
c38f313d DJ |
13428 | /* For each CHILD_DIE, find the corresponding child of |
13429 | ORIGIN_DIE. If there is more than one layer of | |
13430 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13431 | but GCC versions at least through 4.4 generate this (GCC PR | |
13432 | 40573). */ | |
3ea89b92 PMR |
13433 | child_origin_die = child_die; |
13434 | child_origin_cu = cu; | |
c38f313d DJ |
13435 | while (1) |
13436 | { | |
cd02d79d PA |
13437 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13438 | child_origin_cu); | |
c38f313d DJ |
13439 | if (attr == NULL) |
13440 | break; | |
cd02d79d PA |
13441 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13442 | &child_origin_cu); | |
c38f313d DJ |
13443 | } |
13444 | ||
d389af10 JK |
13445 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13446 | counterpart may exist. */ | |
c38f313d | 13447 | if (child_origin_die != child_die) |
d389af10 | 13448 | { |
edb3359d DJ |
13449 | if (child_die->tag != child_origin_die->tag |
13450 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13451 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13452 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13453 | "different tags"), |
9d8780f0 SM |
13454 | sect_offset_str (child_die->sect_off), |
13455 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13456 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13457 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13458 | "different parents"), |
9d8780f0 SM |
13459 | sect_offset_str (child_die->sect_off), |
13460 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13461 | else |
791afaa2 | 13462 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13463 | } |
d389af10 | 13464 | } |
791afaa2 TT |
13465 | std::sort (offsets.begin (), offsets.end ()); |
13466 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13467 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13468 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13469 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13470 | "to DIE %s as their abstract origin"), |
13471 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13472 | |
791afaa2 | 13473 | offsetp = offsets.data (); |
d389af10 JK |
13474 | origin_child_die = origin_die->child; |
13475 | while (origin_child_die && origin_child_die->tag) | |
13476 | { | |
13477 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13478 | while (offsetp < offsets_end |
9c541725 | 13479 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13480 | offsetp++; |
b64f50a1 | 13481 | if (offsetp >= offsets_end |
9c541725 | 13482 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13483 | { |
adde2bff DE |
13484 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13485 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13486 | This can happen with mutually referenced abstract_origins. | |
13487 | PR 16581. */ | |
13488 | if (!origin_child_die->in_process) | |
13489 | process_die (origin_child_die, origin_cu); | |
d389af10 | 13490 | } |
436c571c | 13491 | origin_child_die = origin_child_die->sibling; |
d389af10 | 13492 | } |
cd02d79d | 13493 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13494 | |
13495 | if (cu != origin_cu) | |
13496 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13497 | } |
13498 | ||
c906108c | 13499 | static void |
e7c27a73 | 13500 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13501 | { |
5e22e966 | 13502 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13503 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 13504 | struct context_stack *newobj; |
c906108c SS |
13505 | CORE_ADDR lowpc; |
13506 | CORE_ADDR highpc; | |
13507 | struct die_info *child_die; | |
edb3359d | 13508 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13509 | const char *name; |
e142c38c | 13510 | CORE_ADDR baseaddr; |
801e3a5b | 13511 | struct block *block; |
edb3359d | 13512 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13513 | std::vector<struct symbol *> template_args; |
34eaf542 | 13514 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13515 | |
13516 | if (inlined_func) | |
13517 | { | |
13518 | /* If we do not have call site information, we can't show the | |
13519 | caller of this inlined function. That's too confusing, so | |
13520 | only use the scope for local variables. */ | |
13521 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13522 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13523 | if (call_line == NULL || call_file == NULL) | |
13524 | { | |
13525 | read_lexical_block_scope (die, cu); | |
13526 | return; | |
13527 | } | |
13528 | } | |
c906108c | 13529 | |
b3b3bada | 13530 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13531 | |
94af9270 | 13532 | name = dwarf2_name (die, cu); |
c906108c | 13533 | |
e8d05480 JB |
13534 | /* Ignore functions with missing or empty names. These are actually |
13535 | illegal according to the DWARF standard. */ | |
13536 | if (name == NULL) | |
13537 | { | |
b98664d3 | 13538 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13539 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13540 | return; |
13541 | } | |
13542 | ||
13543 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13544 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13545 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13546 | { |
ae4d0c03 | 13547 | attr = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 13548 | if (attr == nullptr || !attr->as_boolean ()) |
b98664d3 | 13549 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13550 | "for subprogram DIE at %s"), |
13551 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13552 | return; |
13553 | } | |
c906108c | 13554 | |
3e29f34a MR |
13555 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13556 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13557 | |
34eaf542 TT |
13558 | /* If we have any template arguments, then we must allocate a |
13559 | different sort of symbol. */ | |
436c571c | 13560 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
13561 | { |
13562 | if (child_die->tag == DW_TAG_template_type_param | |
13563 | || child_die->tag == DW_TAG_template_value_param) | |
13564 | { | |
8c14c3a3 | 13565 | templ_func = new (&objfile->objfile_obstack) template_symbol; |
cf724bc9 | 13566 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13567 | break; |
13568 | } | |
13569 | } | |
13570 | ||
c24bdb02 | 13571 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13572 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13573 | (struct symbol *) templ_func); | |
4c2df51b | 13574 | |
81873cc8 | 13575 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13576 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13577 | cu->language); |
13578 | ||
4cecd739 DJ |
13579 | /* If there is a location expression for DW_AT_frame_base, record |
13580 | it. */ | |
e142c38c | 13581 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13582 | if (attr != nullptr) |
fe978cb0 | 13583 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13584 | |
63e43d3a PMR |
13585 | /* If there is a location for the static link, record it. */ |
13586 | newobj->static_link = NULL; | |
13587 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13588 | if (attr != nullptr) |
63e43d3a | 13589 | { |
224c3ddb SM |
13590 | newobj->static_link |
13591 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 13592 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
293e7e51 | 13593 | cu->addr_type ()); |
63e43d3a PMR |
13594 | } |
13595 | ||
c24bdb02 | 13596 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13597 | |
639d11d3 | 13598 | if (die->child != NULL) |
c906108c | 13599 | { |
639d11d3 | 13600 | child_die = die->child; |
c906108c SS |
13601 | while (child_die && child_die->tag) |
13602 | { | |
34eaf542 TT |
13603 | if (child_die->tag == DW_TAG_template_type_param |
13604 | || child_die->tag == DW_TAG_template_value_param) | |
13605 | { | |
13606 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13607 | ||
f1078f66 | 13608 | if (arg != NULL) |
2f4732b0 | 13609 | template_args.push_back (arg); |
34eaf542 TT |
13610 | } |
13611 | else | |
13612 | process_die (child_die, cu); | |
436c571c | 13613 | child_die = child_die->sibling; |
c906108c SS |
13614 | } |
13615 | } | |
13616 | ||
d389af10 JK |
13617 | inherit_abstract_dies (die, cu); |
13618 | ||
4a811a97 UW |
13619 | /* If we have a DW_AT_specification, we might need to import using |
13620 | directives from the context of the specification DIE. See the | |
13621 | comment in determine_prefix. */ | |
13622 | if (cu->language == language_cplus | |
13623 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13624 | { | |
13625 | struct dwarf2_cu *spec_cu = cu; | |
13626 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13627 | ||
13628 | while (spec_die) | |
13629 | { | |
13630 | child_die = spec_die->child; | |
13631 | while (child_die && child_die->tag) | |
13632 | { | |
13633 | if (child_die->tag == DW_TAG_imported_module) | |
13634 | process_die (child_die, spec_cu); | |
436c571c | 13635 | child_die = child_die->sibling; |
4a811a97 UW |
13636 | } |
13637 | ||
13638 | /* In some cases, GCC generates specification DIEs that | |
13639 | themselves contain DW_AT_specification attributes. */ | |
13640 | spec_die = die_specification (spec_die, &spec_cu); | |
13641 | } | |
13642 | } | |
13643 | ||
c24bdb02 | 13644 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13645 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13646 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13647 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13648 | |
df8a16a1 | 13649 | /* For C++, set the block's scope. */ |
45280282 IB |
13650 | if ((cu->language == language_cplus |
13651 | || cu->language == language_fortran | |
c44af4eb TT |
13652 | || cu->language == language_d |
13653 | || cu->language == language_rust) | |
4d4ec4e5 | 13654 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13655 | block_set_scope (block, determine_prefix (die, cu), |
13656 | &objfile->objfile_obstack); | |
df8a16a1 | 13657 | |
801e3a5b JB |
13658 | /* If we have address ranges, record them. */ |
13659 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13660 | |
a60f3166 | 13661 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13662 | |
34eaf542 | 13663 | /* Attach template arguments to function. */ |
2f4732b0 | 13664 | if (!template_args.empty ()) |
34eaf542 TT |
13665 | { |
13666 | gdb_assert (templ_func != NULL); | |
13667 | ||
2f4732b0 | 13668 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13669 | templ_func->template_arguments |
dda83cd7 | 13670 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
8d749320 | 13671 | templ_func->n_template_arguments); |
34eaf542 | 13672 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13673 | template_args.data (), |
34eaf542 | 13674 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13675 | |
13676 | /* Make sure that the symtab is set on the new symbols. Even | |
13677 | though they don't appear in this symtab directly, other parts | |
13678 | of gdb assume that symbols do, and this is reasonably | |
13679 | true. */ | |
8634679f | 13680 | for (symbol *sym : template_args) |
3e1d3d8c | 13681 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13682 | } |
13683 | ||
208d8187 JB |
13684 | /* In C++, we can have functions nested inside functions (e.g., when |
13685 | a function declares a class that has methods). This means that | |
13686 | when we finish processing a function scope, we may need to go | |
13687 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13688 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13689 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13690 | |
921e78cf JB |
13691 | /* If we've finished processing a top-level function, subsequent |
13692 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13693 | if (cu->get_builder ()->outermost_context_p ()) |
13694 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13695 | } |
13696 | ||
13697 | /* Process all the DIES contained within a lexical block scope. Start | |
13698 | a new scope, process the dies, and then close the scope. */ | |
13699 | ||
13700 | static void | |
e7c27a73 | 13701 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13702 | { |
5e22e966 | 13703 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13704 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13705 | CORE_ADDR lowpc, highpc; |
13706 | struct die_info *child_die; | |
e142c38c DJ |
13707 | CORE_ADDR baseaddr; |
13708 | ||
b3b3bada | 13709 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13710 | |
13711 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13712 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13713 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13714 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13715 | describe ranges. */ |
e385593e JK |
13716 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13717 | { | |
13718 | case PC_BOUNDS_NOT_PRESENT: | |
13719 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13720 | there was no wrapping by that DW_TAG_lexical_block. | |
13721 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13722 | for (child_die = die->child; | |
13723 | child_die != NULL && child_die->tag; | |
436c571c | 13724 | child_die = child_die->sibling) |
4f7bc5ed TT |
13725 | { |
13726 | /* We might already be processing this DIE. This can happen | |
13727 | in an unusual circumstance -- where a subroutine A | |
13728 | appears lexically in another subroutine B, but A actually | |
13729 | inlines B. The recursion is broken here, rather than in | |
13730 | inherit_abstract_dies, because it seems better to simply | |
13731 | drop concrete children here. */ | |
13732 | if (!child_die->in_process) | |
13733 | process_die (child_die, cu); | |
13734 | } | |
e385593e JK |
13735 | return; |
13736 | case PC_BOUNDS_INVALID: | |
13737 | return; | |
13738 | } | |
3e29f34a MR |
13739 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13740 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13741 | |
c24bdb02 | 13742 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13743 | if (die->child != NULL) |
c906108c | 13744 | { |
639d11d3 | 13745 | child_die = die->child; |
c906108c SS |
13746 | while (child_die && child_die->tag) |
13747 | { | |
e7c27a73 | 13748 | process_die (child_die, cu); |
436c571c | 13749 | child_die = child_die->sibling; |
c906108c SS |
13750 | } |
13751 | } | |
3ea89b92 | 13752 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13753 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13754 | |
c24bdb02 KS |
13755 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13756 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13757 | { |
801e3a5b | 13758 | struct block *block |
dda83cd7 | 13759 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13760 | cstk.start_addr, highpc); |
801e3a5b JB |
13761 | |
13762 | /* Note that recording ranges after traversing children, as we | |
dda83cd7 SM |
13763 | do here, means that recording a parent's ranges entails |
13764 | walking across all its children's ranges as they appear in | |
13765 | the address map, which is quadratic behavior. | |
13766 | ||
13767 | It would be nicer to record the parent's ranges before | |
13768 | traversing its children, simply overriding whatever you find | |
13769 | there. But since we don't even decide whether to create a | |
13770 | block until after we've traversed its children, that's hard | |
13771 | to do. */ | |
801e3a5b | 13772 | dwarf2_record_block_ranges (die, block, baseaddr, cu); |
c906108c | 13773 | } |
c24bdb02 KS |
13774 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13775 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13776 | } |
13777 | ||
216f72a1 | 13778 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13779 | |
13780 | static void | |
13781 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13782 | { | |
5e22e966 | 13783 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 13784 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 13785 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13786 | CORE_ADDR pc, baseaddr; |
13787 | struct attribute *attr; | |
13788 | struct call_site *call_site, call_site_local; | |
13789 | void **slot; | |
13790 | int nparams; | |
13791 | struct die_info *child_die; | |
13792 | ||
b3b3bada | 13793 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13794 | |
216f72a1 JK |
13795 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13796 | if (attr == NULL) | |
13797 | { | |
13798 | /* This was a pre-DWARF-5 GNU extension alias | |
13799 | for DW_AT_call_return_pc. */ | |
13800 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13801 | } | |
96408a79 SA |
13802 | if (!attr) |
13803 | { | |
b98664d3 | 13804 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13805 | "DIE %s [in module %s]"), |
13806 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13807 | return; |
13808 | } | |
95f982e5 | 13809 | pc = attr->as_address () + baseaddr; |
3e29f34a | 13810 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13811 | |
13812 | if (cu->call_site_htab == NULL) | |
13813 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13814 | NULL, &objfile->objfile_obstack, | |
13815 | hashtab_obstack_allocate, NULL); | |
13816 | call_site_local.pc = pc; | |
13817 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13818 | if (*slot != NULL) | |
13819 | { | |
b98664d3 | 13820 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13821 | "DIE %s [in module %s]"), |
13822 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13823 | objfile_name (objfile)); |
96408a79 SA |
13824 | return; |
13825 | } | |
13826 | ||
13827 | /* Count parameters at the caller. */ | |
13828 | ||
13829 | nparams = 0; | |
13830 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13831 | child_die = child_die->sibling) |
96408a79 | 13832 | { |
216f72a1 | 13833 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 13834 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 | 13835 | { |
b98664d3 | 13836 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13837 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13838 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13839 | objfile_name (objfile)); |
96408a79 SA |
13840 | continue; |
13841 | } | |
13842 | ||
13843 | nparams++; | |
13844 | } | |
13845 | ||
224c3ddb SM |
13846 | call_site |
13847 | = ((struct call_site *) | |
13848 | obstack_alloc (&objfile->objfile_obstack, | |
13849 | sizeof (*call_site) | |
13850 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13851 | *slot = call_site; |
13852 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13853 | call_site->pc = pc; | |
13854 | ||
216f72a1 JK |
13855 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13856 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13857 | { |
13858 | struct die_info *func_die; | |
13859 | ||
13860 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13861 | for (func_die = die->parent; | |
13862 | func_die && func_die->tag != DW_TAG_subprogram | |
13863 | && func_die->tag != DW_TAG_subroutine_type; | |
13864 | func_die = func_die->parent); | |
13865 | ||
216f72a1 JK |
13866 | /* DW_AT_call_all_calls is a superset |
13867 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13868 | if (func_die |
dda83cd7 SM |
13869 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
13870 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
216f72a1 | 13871 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13872 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13873 | { | |
13874 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13875 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13876 | both the initial caller containing the real return address PC and | |
13877 | the final callee containing the current PC of a chain of tail | |
13878 | calls do not need to have the tail call list complete. But any | |
13879 | function candidate for a virtual tail call frame searched via | |
13880 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13881 | determined unambiguously. */ | |
13882 | } | |
13883 | else | |
13884 | { | |
13885 | struct type *func_type = NULL; | |
13886 | ||
13887 | if (func_die) | |
13888 | func_type = get_die_type (func_die, cu); | |
13889 | if (func_type != NULL) | |
13890 | { | |
78134374 | 13891 | gdb_assert (func_type->code () == TYPE_CODE_FUNC); |
96408a79 SA |
13892 | |
13893 | /* Enlist this call site to the function. */ | |
13894 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13895 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13896 | } | |
13897 | else | |
b98664d3 | 13898 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13899 | "DIE %s [in module %s]"), |
13900 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13901 | } |
13902 | } | |
13903 | ||
216f72a1 JK |
13904 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13905 | if (attr == NULL) | |
13906 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13907 | if (attr == NULL) | |
13908 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13909 | if (attr == NULL) |
216f72a1 JK |
13910 | { |
13911 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13912 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13913 | } | |
96408a79 | 13914 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
9d2246fc | 13915 | if (!attr || (attr->form_is_block () && attr->as_block ()->size == 0)) |
96408a79 | 13916 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13917 | else if (attr->form_is_block ()) |
96408a79 SA |
13918 | { |
13919 | struct dwarf2_locexpr_baton *dlbaton; | |
9d2246fc | 13920 | struct dwarf_block *block = attr->as_block (); |
96408a79 | 13921 | |
8d749320 | 13922 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
9d2246fc TT |
13923 | dlbaton->data = block->data; |
13924 | dlbaton->size = block->size; | |
a50264ba | 13925 | dlbaton->per_objfile = per_objfile; |
96408a79 SA |
13926 | dlbaton->per_cu = cu->per_cu; |
13927 | ||
13928 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13929 | } | |
cd6c91b4 | 13930 | else if (attr->form_is_ref ()) |
96408a79 | 13931 | { |
96408a79 SA |
13932 | struct dwarf2_cu *target_cu = cu; |
13933 | struct die_info *target_die; | |
13934 | ||
ac9ec31b | 13935 | target_die = follow_die_ref (die, attr, &target_cu); |
5e22e966 | 13936 | gdb_assert (target_cu->per_objfile->objfile == objfile); |
96408a79 SA |
13937 | if (die_is_declaration (target_die, target_cu)) |
13938 | { | |
7d45c7c3 | 13939 | const char *target_physname; |
9112db09 JK |
13940 | |
13941 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13942 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13943 | if (target_physname == NULL) |
9112db09 | 13944 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13945 | if (target_physname == NULL) |
b98664d3 | 13946 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 13947 | "physname, for referencing DIE %s [in module %s]"), |
9d8780f0 | 13948 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 13949 | else |
7d455152 | 13950 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13951 | } |
13952 | else | |
13953 | { | |
13954 | CORE_ADDR lowpc; | |
13955 | ||
13956 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13957 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13958 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13959 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 13960 | "low pc, for referencing DIE %s [in module %s]"), |
9d8780f0 | 13961 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 13962 | else |
3e29f34a MR |
13963 | { |
13964 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13965 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13966 | } | |
96408a79 SA |
13967 | } |
13968 | } | |
13969 | else | |
b98664d3 | 13970 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13971 | "block nor reference, for DIE %s [in module %s]"), |
13972 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13973 | |
13974 | call_site->per_cu = cu->per_cu; | |
9f47c707 | 13975 | call_site->per_objfile = per_objfile; |
96408a79 SA |
13976 | |
13977 | for (child_die = die->child; | |
13978 | child_die && child_die->tag; | |
436c571c | 13979 | child_die = child_die->sibling) |
96408a79 | 13980 | { |
96408a79 | 13981 | struct call_site_parameter *parameter; |
1788b2d3 | 13982 | struct attribute *loc, *origin; |
96408a79 | 13983 | |
216f72a1 | 13984 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 13985 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 SA |
13986 | { |
13987 | /* Already printed the complaint above. */ | |
13988 | continue; | |
13989 | } | |
13990 | ||
13991 | gdb_assert (call_site->parameter_count < nparams); | |
13992 | parameter = &call_site->parameter[call_site->parameter_count]; | |
13993 | ||
1788b2d3 JK |
13994 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
13995 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 13996 | register is contained in DW_AT_call_value. */ |
96408a79 | 13997 | |
24c5c679 | 13998 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
13999 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14000 | if (origin == NULL) | |
14001 | { | |
14002 | /* This was a pre-DWARF-5 GNU extension alias | |
14003 | for DW_AT_call_parameter. */ | |
14004 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14005 | } | |
cd6c91b4 | 14006 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 14007 | { |
1788b2d3 | 14008 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 14009 | |
0826b30a | 14010 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 14011 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
14012 | { |
14013 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14014 | binding can be done only inside one CU. Such referenced DIE | |
14015 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 14016 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14017 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14018 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14019 | objfile_name (objfile)); |
d76b7dbc JK |
14020 | continue; |
14021 | } | |
9c541725 PA |
14022 | parameter->u.param_cu_off |
14023 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 14024 | } |
4fc6c0d5 | 14025 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 14026 | { |
b98664d3 | 14027 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
14028 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14029 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14030 | continue; |
14031 | } | |
24c5c679 | 14032 | else |
96408a79 | 14033 | { |
9d2246fc TT |
14034 | struct dwarf_block *block = loc->as_block (); |
14035 | ||
24c5c679 | 14036 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
9d2246fc | 14037 | (block->data, &block->data[block->size]); |
24c5c679 JK |
14038 | if (parameter->u.dwarf_reg != -1) |
14039 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
9d2246fc TT |
14040 | else if (dwarf_block_to_sp_offset (gdbarch, block->data, |
14041 | &block->data[block->size], | |
24c5c679 JK |
14042 | ¶meter->u.fb_offset)) |
14043 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14044 | else | |
14045 | { | |
b98664d3 | 14046 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 14047 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 14048 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14049 | "[in module %s]"), |
9d8780f0 | 14050 | sect_offset_str (child_die->sect_off), |
9c541725 | 14051 | objfile_name (objfile)); |
24c5c679 JK |
14052 | continue; |
14053 | } | |
96408a79 SA |
14054 | } |
14055 | ||
216f72a1 JK |
14056 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14057 | if (attr == NULL) | |
14058 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 14059 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 14060 | { |
b98664d3 | 14061 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14062 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14063 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14064 | objfile_name (objfile)); |
96408a79 SA |
14065 | continue; |
14066 | } | |
9d2246fc TT |
14067 | |
14068 | struct dwarf_block *block = attr->as_block (); | |
14069 | parameter->value = block->data; | |
14070 | parameter->value_size = block->size; | |
96408a79 SA |
14071 | |
14072 | /* Parameters are not pre-cleared by memset above. */ | |
14073 | parameter->data_value = NULL; | |
14074 | parameter->data_value_size = 0; | |
14075 | call_site->parameter_count++; | |
14076 | ||
216f72a1 JK |
14077 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14078 | if (attr == NULL) | |
14079 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 14080 | if (attr != nullptr) |
96408a79 | 14081 | { |
4fc6c0d5 | 14082 | if (!attr->form_is_block ()) |
b98664d3 | 14083 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14084 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14085 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14086 | objfile_name (objfile)); |
96408a79 SA |
14087 | else |
14088 | { | |
9d2246fc TT |
14089 | block = attr->as_block (); |
14090 | parameter->data_value = block->data; | |
14091 | parameter->data_value_size = block->size; | |
96408a79 SA |
14092 | } |
14093 | } | |
14094 | } | |
14095 | } | |
14096 | ||
71a3c369 TT |
14097 | /* Helper function for read_variable. If DIE represents a virtual |
14098 | table, then return the type of the concrete object that is | |
14099 | associated with the virtual table. Otherwise, return NULL. */ | |
14100 | ||
14101 | static struct type * | |
14102 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14103 | { | |
14104 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14105 | if (attr == NULL) | |
14106 | return NULL; | |
14107 | ||
14108 | /* Find the type DIE. */ | |
14109 | struct die_info *type_die = NULL; | |
14110 | struct dwarf2_cu *type_cu = cu; | |
14111 | ||
cd6c91b4 | 14112 | if (attr->form_is_ref ()) |
71a3c369 TT |
14113 | type_die = follow_die_ref (die, attr, &type_cu); |
14114 | if (type_die == NULL) | |
14115 | return NULL; | |
14116 | ||
14117 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14118 | return NULL; | |
14119 | return die_containing_type (type_die, type_cu); | |
14120 | } | |
14121 | ||
14122 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14123 | ||
14124 | static void | |
14125 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14126 | { | |
14127 | struct rust_vtable_symbol *storage = NULL; | |
14128 | ||
14129 | if (cu->language == language_rust) | |
14130 | { | |
14131 | struct type *containing_type = rust_containing_type (die, cu); | |
14132 | ||
14133 | if (containing_type != NULL) | |
14134 | { | |
5e22e966 | 14135 | struct objfile *objfile = cu->per_objfile->objfile; |
71a3c369 | 14136 | |
8c14c3a3 | 14137 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol; |
71a3c369 | 14138 | storage->concrete_type = containing_type; |
cf724bc9 | 14139 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14140 | } |
14141 | } | |
14142 | ||
e4a62c65 TV |
14143 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
14144 | struct attribute *abstract_origin | |
14145 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14146 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
14147 | if (res == NULL && loc && abstract_origin) | |
14148 | { | |
14149 | /* We have a variable without a name, but with a location and an abstract | |
14150 | origin. This may be a concrete instance of an abstract variable | |
14151 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
14152 | later. */ | |
14153 | struct dwarf2_cu *origin_cu = cu; | |
14154 | struct die_info *origin_die | |
14155 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
5e22e966 SM |
14156 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14157 | per_objfile->per_bfd->abstract_to_concrete | |
14158 | [origin_die->sect_off].push_back (die->sect_off); | |
e4a62c65 | 14159 | } |
71a3c369 TT |
14160 | } |
14161 | ||
43988095 JK |
14162 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14163 | reading .debug_rnglists. | |
14164 | Callback's type should be: | |
14165 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14166 | Return true if the attributes are present and valid, otherwise, | |
14167 | return false. */ | |
14168 | ||
14169 | template <typename Callback> | |
14170 | static bool | |
14171 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
d0ce17d8 | 14172 | dwarf_tag tag, Callback &&callback) |
43988095 | 14173 | { |
976ca316 SM |
14174 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14175 | struct objfile *objfile = per_objfile->objfile; | |
43988095 | 14176 | bfd *obfd = objfile->obfd; |
43988095 | 14177 | /* Base address selection entry. */ |
2b24b6e4 | 14178 | gdb::optional<CORE_ADDR> base; |
43988095 | 14179 | const gdb_byte *buffer; |
43988095 JK |
14180 | CORE_ADDR baseaddr; |
14181 | bool overflow = false; | |
d0ce17d8 CT |
14182 | ULONGEST addr_index; |
14183 | struct dwarf2_section_info *rnglists_section; | |
43988095 | 14184 | |
43988095 | 14185 | base = cu->base_address; |
d0ce17d8 CT |
14186 | rnglists_section = cu_debug_rnglists_section (cu, tag); |
14187 | rnglists_section->read (objfile); | |
43988095 | 14188 | |
d0ce17d8 | 14189 | if (offset >= rnglists_section->size) |
43988095 | 14190 | { |
b98664d3 | 14191 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
14192 | offset); |
14193 | return false; | |
14194 | } | |
d0ce17d8 | 14195 | buffer = rnglists_section->buffer + offset; |
43988095 | 14196 | |
b3b3bada | 14197 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
14198 | |
14199 | while (1) | |
14200 | { | |
7814882a JK |
14201 | /* Initialize it due to a false compiler warning. */ |
14202 | CORE_ADDR range_beginning = 0, range_end = 0; | |
d0ce17d8 CT |
14203 | const gdb_byte *buf_end = (rnglists_section->buffer |
14204 | + rnglists_section->size); | |
43988095 JK |
14205 | unsigned int bytes_read; |
14206 | ||
14207 | if (buffer == buf_end) | |
14208 | { | |
14209 | overflow = true; | |
14210 | break; | |
14211 | } | |
14212 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14213 | switch (rlet) | |
14214 | { | |
14215 | case DW_RLE_end_of_list: | |
14216 | break; | |
14217 | case DW_RLE_base_address: | |
14218 | if (buffer + cu->header.addr_size > buf_end) | |
14219 | { | |
14220 | overflow = true; | |
14221 | break; | |
14222 | } | |
c8a7a66f | 14223 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14224 | buffer += bytes_read; |
14225 | break; | |
dda83cd7 SM |
14226 | case DW_RLE_base_addressx: |
14227 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14228 | buffer += bytes_read; | |
14229 | base = read_addr_index (cu, addr_index); | |
14230 | break; | |
43988095 JK |
14231 | case DW_RLE_start_length: |
14232 | if (buffer + cu->header.addr_size > buf_end) | |
14233 | { | |
14234 | overflow = true; | |
14235 | break; | |
14236 | } | |
c8a7a66f TT |
14237 | range_beginning = cu->header.read_address (obfd, buffer, |
14238 | &bytes_read); | |
43988095 JK |
14239 | buffer += bytes_read; |
14240 | range_end = (range_beginning | |
14241 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14242 | buffer += bytes_read; | |
14243 | if (buffer > buf_end) | |
14244 | { | |
14245 | overflow = true; | |
14246 | break; | |
14247 | } | |
14248 | break; | |
d0ce17d8 | 14249 | case DW_RLE_startx_length: |
dda83cd7 SM |
14250 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
14251 | buffer += bytes_read; | |
14252 | range_beginning = read_addr_index (cu, addr_index); | |
14253 | if (buffer > buf_end) | |
14254 | { | |
14255 | overflow = true; | |
14256 | break; | |
14257 | } | |
14258 | range_end = (range_beginning | |
14259 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14260 | buffer += bytes_read; | |
14261 | break; | |
43988095 JK |
14262 | case DW_RLE_offset_pair: |
14263 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14264 | buffer += bytes_read; | |
14265 | if (buffer > buf_end) | |
14266 | { | |
14267 | overflow = true; | |
14268 | break; | |
14269 | } | |
14270 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14271 | buffer += bytes_read; | |
14272 | if (buffer > buf_end) | |
14273 | { | |
14274 | overflow = true; | |
14275 | break; | |
14276 | } | |
14277 | break; | |
14278 | case DW_RLE_start_end: | |
14279 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14280 | { | |
14281 | overflow = true; | |
14282 | break; | |
14283 | } | |
c8a7a66f TT |
14284 | range_beginning = cu->header.read_address (obfd, buffer, |
14285 | &bytes_read); | |
43988095 | 14286 | buffer += bytes_read; |
c8a7a66f | 14287 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14288 | buffer += bytes_read; |
14289 | break; | |
d0ce17d8 | 14290 | case DW_RLE_startx_endx: |
dda83cd7 SM |
14291 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
14292 | buffer += bytes_read; | |
14293 | range_beginning = read_addr_index (cu, addr_index); | |
14294 | if (buffer > buf_end) | |
14295 | { | |
14296 | overflow = true; | |
14297 | break; | |
14298 | } | |
14299 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14300 | buffer += bytes_read; | |
14301 | range_end = read_addr_index (cu, addr_index); | |
14302 | break; | |
43988095 | 14303 | default: |
b98664d3 | 14304 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14305 | return false; |
14306 | } | |
14307 | if (rlet == DW_RLE_end_of_list || overflow) | |
14308 | break; | |
14309 | if (rlet == DW_RLE_base_address) | |
14310 | continue; | |
14311 | ||
43988095 JK |
14312 | if (range_beginning > range_end) |
14313 | { | |
14314 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14315 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14316 | return false; |
14317 | } | |
14318 | ||
14319 | /* Empty range entries have no effect. */ | |
14320 | if (range_beginning == range_end) | |
14321 | continue; | |
14322 | ||
d0ce17d8 CT |
14323 | /* Only DW_RLE_offset_pair needs the base address added. */ |
14324 | if (rlet == DW_RLE_offset_pair) | |
14325 | { | |
14326 | if (!base.has_value ()) | |
14327 | { | |
14328 | /* We have no valid base address for the DW_RLE_offset_pair. */ | |
14329 | complaint (_("Invalid .debug_rnglists data (no base address for " | |
14330 | "DW_RLE_offset_pair)")); | |
14331 | return false; | |
14332 | } | |
14333 | ||
14334 | range_beginning += *base; | |
14335 | range_end += *base; | |
14336 | } | |
43988095 JK |
14337 | |
14338 | /* A not-uncommon case of bad debug info. | |
14339 | Don't pollute the addrmap with bad data. */ | |
14340 | if (range_beginning + baseaddr == 0 | |
976ca316 | 14341 | && !per_objfile->per_bfd->has_section_at_zero) |
43988095 | 14342 | { |
b98664d3 | 14343 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14344 | " [in module %s]"), objfile_name (objfile)); |
14345 | continue; | |
14346 | } | |
14347 | ||
14348 | callback (range_beginning, range_end); | |
14349 | } | |
14350 | ||
14351 | if (overflow) | |
14352 | { | |
b98664d3 | 14353 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14354 | "for DW_AT_ranges attribute"), |
14355 | offset); | |
14356 | return false; | |
14357 | } | |
14358 | ||
14359 | return true; | |
14360 | } | |
14361 | ||
14362 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14363 | Callback's type should be: | |
14364 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14365 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14366 | |
43988095 | 14367 | template <typename Callback> |
43039443 | 14368 | static int |
d0ce17d8 | 14369 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, dwarf_tag tag, |
43988095 | 14370 | Callback &&callback) |
43039443 | 14371 | { |
5e22e966 SM |
14372 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14373 | struct objfile *objfile = per_objfile->objfile; | |
43039443 JK |
14374 | struct comp_unit_head *cu_header = &cu->header; |
14375 | bfd *obfd = objfile->obfd; | |
14376 | unsigned int addr_size = cu_header->addr_size; | |
14377 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14378 | /* Base address selection entry. */ | |
2b24b6e4 | 14379 | gdb::optional<CORE_ADDR> base; |
43039443 | 14380 | unsigned int dummy; |
d521ce57 | 14381 | const gdb_byte *buffer; |
ff013f42 | 14382 | CORE_ADDR baseaddr; |
43039443 | 14383 | |
43988095 | 14384 | if (cu_header->version >= 5) |
d0ce17d8 | 14385 | return dwarf2_rnglists_process (offset, cu, tag, callback); |
43988095 | 14386 | |
d00adf39 | 14387 | base = cu->base_address; |
43039443 | 14388 | |
5e22e966 SM |
14389 | per_objfile->per_bfd->ranges.read (objfile); |
14390 | if (offset >= per_objfile->per_bfd->ranges.size) | |
43039443 | 14391 | { |
b98664d3 | 14392 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14393 | offset); |
14394 | return 0; | |
14395 | } | |
5e22e966 | 14396 | buffer = per_objfile->per_bfd->ranges.buffer + offset; |
43039443 | 14397 | |
b3b3bada | 14398 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 14399 | |
43039443 JK |
14400 | while (1) |
14401 | { | |
14402 | CORE_ADDR range_beginning, range_end; | |
14403 | ||
c8a7a66f | 14404 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 14405 | buffer += addr_size; |
c8a7a66f | 14406 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
14407 | buffer += addr_size; |
14408 | offset += 2 * addr_size; | |
14409 | ||
14410 | /* An end of list marker is a pair of zero addresses. */ | |
14411 | if (range_beginning == 0 && range_end == 0) | |
14412 | /* Found the end of list entry. */ | |
14413 | break; | |
14414 | ||
14415 | /* Each base address selection entry is a pair of 2 values. | |
14416 | The first is the largest possible address, the second is | |
14417 | the base address. Check for a base address here. */ | |
14418 | if ((range_beginning & mask) == mask) | |
14419 | { | |
28d2bfb9 AB |
14420 | /* If we found the largest possible address, then we already |
14421 | have the base address in range_end. */ | |
14422 | base = range_end; | |
43039443 JK |
14423 | continue; |
14424 | } | |
14425 | ||
2b24b6e4 | 14426 | if (!base.has_value ()) |
43039443 JK |
14427 | { |
14428 | /* We have no valid base address for the ranges | |
14429 | data. */ | |
b98664d3 | 14430 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14431 | return 0; |
14432 | } | |
14433 | ||
9277c30c UW |
14434 | if (range_beginning > range_end) |
14435 | { | |
14436 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14437 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14438 | return 0; |
14439 | } | |
14440 | ||
14441 | /* Empty range entries have no effect. */ | |
14442 | if (range_beginning == range_end) | |
14443 | continue; | |
14444 | ||
2b24b6e4 TT |
14445 | range_beginning += *base; |
14446 | range_end += *base; | |
43039443 | 14447 | |
01093045 DE |
14448 | /* A not-uncommon case of bad debug info. |
14449 | Don't pollute the addrmap with bad data. */ | |
14450 | if (range_beginning + baseaddr == 0 | |
5e22e966 | 14451 | && !per_objfile->per_bfd->has_section_at_zero) |
01093045 | 14452 | { |
b98664d3 | 14453 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14454 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14455 | continue; |
14456 | } | |
14457 | ||
5f46c5a5 JK |
14458 | callback (range_beginning, range_end); |
14459 | } | |
14460 | ||
14461 | return 1; | |
14462 | } | |
14463 | ||
14464 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14465 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14466 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14467 | ||
14468 | static int | |
14469 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14470 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
d0ce17d8 | 14471 | dwarf2_psymtab *ranges_pst, dwarf_tag tag) |
5f46c5a5 | 14472 | { |
5e22e966 | 14473 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14474 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 14475 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14476 | int low_set = 0; |
14477 | CORE_ADDR low = 0; | |
14478 | CORE_ADDR high = 0; | |
14479 | int retval; | |
14480 | ||
d0ce17d8 | 14481 | retval = dwarf2_ranges_process (offset, cu, tag, |
5f46c5a5 JK |
14482 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) |
14483 | { | |
9277c30c | 14484 | if (ranges_pst != NULL) |
3e29f34a MR |
14485 | { |
14486 | CORE_ADDR lowpc; | |
14487 | CORE_ADDR highpc; | |
14488 | ||
79748972 TT |
14489 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14490 | range_beginning + baseaddr) | |
14491 | - baseaddr); | |
14492 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14493 | range_end + baseaddr) | |
14494 | - baseaddr); | |
d320c2b5 TT |
14495 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
14496 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 14497 | } |
ff013f42 | 14498 | |
43039443 JK |
14499 | /* FIXME: This is recording everything as a low-high |
14500 | segment of consecutive addresses. We should have a | |
14501 | data structure for discontiguous block ranges | |
14502 | instead. */ | |
14503 | if (! low_set) | |
14504 | { | |
14505 | low = range_beginning; | |
14506 | high = range_end; | |
14507 | low_set = 1; | |
14508 | } | |
14509 | else | |
14510 | { | |
14511 | if (range_beginning < low) | |
14512 | low = range_beginning; | |
14513 | if (range_end > high) | |
14514 | high = range_end; | |
14515 | } | |
5f46c5a5 JK |
14516 | }); |
14517 | if (!retval) | |
14518 | return 0; | |
43039443 JK |
14519 | |
14520 | if (! low_set) | |
14521 | /* If the first entry is an end-of-list marker, the range | |
14522 | describes an empty scope, i.e. no instructions. */ | |
14523 | return 0; | |
14524 | ||
14525 | if (low_return) | |
14526 | *low_return = low; | |
14527 | if (high_return) | |
14528 | *high_return = high; | |
14529 | return 1; | |
14530 | } | |
14531 | ||
3a2b436a JK |
14532 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14533 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14534 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14535 | |
3a2b436a | 14536 | static enum pc_bounds_kind |
af34e669 | 14537 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14538 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14539 | dwarf2_psymtab *pst) |
c906108c | 14540 | { |
976ca316 | 14541 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
c906108c | 14542 | struct attribute *attr; |
91da1414 | 14543 | struct attribute *attr_high; |
af34e669 DJ |
14544 | CORE_ADDR low = 0; |
14545 | CORE_ADDR high = 0; | |
e385593e | 14546 | enum pc_bounds_kind ret; |
c906108c | 14547 | |
91da1414 MW |
14548 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14549 | if (attr_high) | |
af34e669 | 14550 | { |
e142c38c | 14551 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14552 | if (attr != nullptr) |
dda83cd7 | 14553 | { |
95f982e5 TT |
14554 | low = attr->as_address (); |
14555 | high = attr_high->as_address (); | |
cd6c91b4 | 14556 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14557 | high += low; |
91da1414 | 14558 | } |
af34e669 DJ |
14559 | else |
14560 | /* Found high w/o low attribute. */ | |
e385593e | 14561 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14562 | |
14563 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14564 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14565 | } |
c906108c | 14566 | else |
af34e669 | 14567 | { |
e142c38c | 14568 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
529908cb | 14569 | if (attr != nullptr && attr->form_is_unsigned ()) |
af34e669 | 14570 | { |
18a8505e | 14571 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 | 14572 | We take advantage of the fact that DW_AT_ranges does not appear |
d0ce17d8 CT |
14573 | in DW_TAG_compile_unit of DWO files. |
14574 | ||
14575 | Attributes of the form DW_FORM_rnglistx have already had their | |
14576 | value changed by read_rnglist_index and already include | |
14577 | DW_AT_rnglists_base, so don't need to add the ranges base, | |
14578 | either. */ | |
14579 | int need_ranges_base = (die->tag != DW_TAG_compile_unit | |
14580 | && attr->form != DW_FORM_rnglistx); | |
529908cb | 14581 | unsigned int ranges_offset = (attr->as_unsigned () |
ab435259 DE |
14582 | + (need_ranges_base |
14583 | ? cu->ranges_base | |
14584 | : 0)); | |
2e3cf129 | 14585 | |
af34e669 | 14586 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14587 | .debug_ranges section. */ |
d0ce17d8 CT |
14588 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst, |
14589 | die->tag)) | |
e385593e | 14590 | return PC_BOUNDS_INVALID; |
43039443 | 14591 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14592 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14593 | } |
e385593e JK |
14594 | else |
14595 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14596 | } |
c906108c | 14597 | |
48fbe735 | 14598 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14599 | if (high <= low) |
e385593e | 14600 | return PC_BOUNDS_INVALID; |
c906108c SS |
14601 | |
14602 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14603 | eliminate duplicate copies of functions and vtables and such. | |
14604 | The linker will arbitrarily choose one and discard the others. | |
14605 | The AT_*_pc values for such functions refer to local labels in | |
14606 | these sections. If the section from that file was discarded, the | |
14607 | labels are not in the output, so the relocs get a value of 0. | |
14608 | If this is a discarded function, mark the pc bounds as invalid, | |
14609 | so that GDB will ignore it. */ | |
976ca316 | 14610 | if (low == 0 && !per_objfile->per_bfd->has_section_at_zero) |
e385593e | 14611 | return PC_BOUNDS_INVALID; |
c906108c SS |
14612 | |
14613 | *lowpc = low; | |
96408a79 SA |
14614 | if (highpc) |
14615 | *highpc = high; | |
af34e669 | 14616 | return ret; |
c906108c SS |
14617 | } |
14618 | ||
b084d499 JB |
14619 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14620 | its low and high PC addresses. Do nothing if these addresses could not | |
14621 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14622 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14623 | ||
14624 | static void | |
14625 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
dda83cd7 SM |
14626 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
14627 | struct dwarf2_cu *cu) | |
b084d499 JB |
14628 | { |
14629 | CORE_ADDR low, high; | |
14630 | struct die_info *child = die->child; | |
14631 | ||
e385593e | 14632 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14633 | { |
325fac50 PA |
14634 | *lowpc = std::min (*lowpc, low); |
14635 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14636 | } |
14637 | ||
14638 | /* If the language does not allow nested subprograms (either inside | |
14639 | subprograms or lexical blocks), we're done. */ | |
14640 | if (cu->language != language_ada) | |
14641 | return; | |
6e70227d | 14642 | |
b084d499 JB |
14643 | /* Check all the children of the given DIE. If it contains nested |
14644 | subprograms, then check their pc bounds. Likewise, we need to | |
14645 | check lexical blocks as well, as they may also contain subprogram | |
14646 | definitions. */ | |
14647 | while (child && child->tag) | |
14648 | { | |
14649 | if (child->tag == DW_TAG_subprogram | |
dda83cd7 SM |
14650 | || child->tag == DW_TAG_lexical_block) |
14651 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 14652 | child = child->sibling; |
b084d499 JB |
14653 | } |
14654 | } | |
14655 | ||
fae299cd DC |
14656 | /* Get the low and high pc's represented by the scope DIE, and store |
14657 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14658 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14659 | ||
14660 | static void | |
14661 | get_scope_pc_bounds (struct die_info *die, | |
14662 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14663 | struct dwarf2_cu *cu) | |
14664 | { | |
14665 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14666 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14667 | CORE_ADDR current_low, current_high; | |
14668 | ||
3a2b436a | 14669 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14670 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14671 | { |
14672 | best_low = current_low; | |
14673 | best_high = current_high; | |
14674 | } | |
14675 | else | |
14676 | { | |
14677 | struct die_info *child = die->child; | |
14678 | ||
14679 | while (child && child->tag) | |
14680 | { | |
14681 | switch (child->tag) { | |
14682 | case DW_TAG_subprogram: | |
dda83cd7 | 14683 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14684 | break; |
14685 | case DW_TAG_namespace: | |
f55ee35c | 14686 | case DW_TAG_module: |
fae299cd DC |
14687 | /* FIXME: carlton/2004-01-16: Should we do this for |
14688 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14689 | that current GCC's always emit the DIEs corresponding | |
14690 | to definitions of methods of classes as children of a | |
14691 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14692 | the DIEs giving the declarations, which could be | |
14693 | anywhere). But I don't see any reason why the | |
14694 | standards says that they have to be there. */ | |
14695 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14696 | ||
14697 | if (current_low != ((CORE_ADDR) -1)) | |
14698 | { | |
325fac50 PA |
14699 | best_low = std::min (best_low, current_low); |
14700 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14701 | } |
14702 | break; | |
14703 | default: | |
0963b4bd | 14704 | /* Ignore. */ |
fae299cd DC |
14705 | break; |
14706 | } | |
14707 | ||
436c571c | 14708 | child = child->sibling; |
fae299cd DC |
14709 | } |
14710 | } | |
14711 | ||
14712 | *lowpc = best_low; | |
14713 | *highpc = best_high; | |
14714 | } | |
14715 | ||
801e3a5b JB |
14716 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14717 | in DIE. */ | |
380bca97 | 14718 | |
801e3a5b JB |
14719 | static void |
14720 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
dda83cd7 | 14721 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) |
801e3a5b | 14722 | { |
5e22e966 | 14723 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14724 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14725 | struct attribute *attr; |
91da1414 | 14726 | struct attribute *attr_high; |
801e3a5b | 14727 | |
91da1414 MW |
14728 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14729 | if (attr_high) | |
801e3a5b | 14730 | { |
801e3a5b | 14731 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14732 | if (attr != nullptr) |
dda83cd7 | 14733 | { |
95f982e5 TT |
14734 | CORE_ADDR low = attr->as_address (); |
14735 | CORE_ADDR high = attr_high->as_address (); | |
31aa7e4e | 14736 | |
cd6c91b4 | 14737 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14738 | high += low; |
9a619af0 | 14739 | |
3e29f34a MR |
14740 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14741 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14742 | cu->get_builder ()->record_block_range (block, low, high - 1); |
dda83cd7 | 14743 | } |
801e3a5b JB |
14744 | } |
14745 | ||
14746 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
529908cb | 14747 | if (attr != nullptr && attr->form_is_unsigned ()) |
801e3a5b | 14748 | { |
18a8505e | 14749 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 | 14750 | We take advantage of the fact that DW_AT_ranges does not appear |
d0ce17d8 CT |
14751 | in DW_TAG_compile_unit of DWO files. |
14752 | ||
14753 | Attributes of the form DW_FORM_rnglistx have already had their | |
14754 | value changed by read_rnglist_index and already include | |
14755 | DW_AT_rnglists_base, so don't need to add the ranges base, | |
14756 | either. */ | |
14757 | int need_ranges_base = (die->tag != DW_TAG_compile_unit | |
14758 | && attr->form != DW_FORM_rnglistx); | |
801e3a5b JB |
14759 | |
14760 | /* The value of the DW_AT_ranges attribute is the offset of the | |
dda83cd7 | 14761 | address range list in the .debug_ranges section. */ |
529908cb | 14762 | unsigned long offset = (attr->as_unsigned () |
ab435259 | 14763 | + (need_ranges_base ? cu->ranges_base : 0)); |
801e3a5b | 14764 | |
2d5f09ec | 14765 | std::vector<blockrange> blockvec; |
d0ce17d8 | 14766 | dwarf2_ranges_process (offset, cu, die->tag, |
5f46c5a5 JK |
14767 | [&] (CORE_ADDR start, CORE_ADDR end) |
14768 | { | |
58fdfd2c JK |
14769 | start += baseaddr; |
14770 | end += baseaddr; | |
5f46c5a5 JK |
14771 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14772 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14773 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14774 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14775 | }); |
2d5f09ec KB |
14776 | |
14777 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14778 | } |
14779 | } | |
14780 | ||
685b1105 JK |
14781 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14782 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14783 | |
685b1105 JK |
14784 | static void |
14785 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14786 | { |
38360086 | 14787 | int major, minor; |
60d5a603 JK |
14788 | |
14789 | if (cu->producer == NULL) | |
14790 | { | |
14791 | /* For unknown compilers expect their behavior is DWARF version | |
14792 | compliant. | |
14793 | ||
14794 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14795 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14796 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14797 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14798 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14799 | } |
b1ffba5a | 14800 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14801 | { |
38360086 MW |
14802 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14803 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14804 | } |
5230b05a | 14805 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14806 | { |
14807 | cu->producer_is_icc = true; | |
14808 | cu->producer_is_icc_lt_14 = major < 14; | |
14809 | } | |
c258c396 JD |
14810 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14811 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14812 | else |
14813 | { | |
14814 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14815 | compliant. */ | |
60d5a603 JK |
14816 | } |
14817 | ||
9068261f | 14818 | cu->checked_producer = true; |
685b1105 | 14819 | } |
ba919b58 | 14820 | |
685b1105 JK |
14821 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14822 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14823 | during 4.6.0 experimental. */ | |
14824 | ||
9068261f | 14825 | static bool |
685b1105 JK |
14826 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14827 | { | |
14828 | if (!cu->checked_producer) | |
14829 | check_producer (cu); | |
14830 | ||
14831 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14832 | } |
14833 | ||
c258c396 JD |
14834 | |
14835 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14836 | with incorrect is_stmt attributes. */ | |
14837 | ||
14838 | static bool | |
14839 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14840 | { | |
14841 | if (!cu->checked_producer) | |
14842 | check_producer (cu); | |
14843 | ||
14844 | return cu->producer_is_codewarrior; | |
14845 | } | |
14846 | ||
bf23a268 TT |
14847 | /* Return the accessibility of DIE, as given by DW_AT_accessibility. |
14848 | If that attribute is not available, return the appropriate | |
14849 | default. */ | |
60d5a603 JK |
14850 | |
14851 | static enum dwarf_access_attribute | |
bf23a268 | 14852 | dwarf2_access_attribute (struct die_info *die, struct dwarf2_cu *cu) |
60d5a603 | 14853 | { |
bf23a268 TT |
14854 | attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
14855 | if (attr != nullptr) | |
14856 | { | |
14857 | LONGEST value = attr->constant_value (-1); | |
14858 | if (value == DW_ACCESS_public | |
14859 | || value == DW_ACCESS_protected | |
14860 | || value == DW_ACCESS_private) | |
14861 | return (dwarf_access_attribute) value; | |
14862 | complaint (_("Unhandled DW_AT_accessibility value (%s)"), | |
14863 | plongest (value)); | |
14864 | } | |
14865 | ||
60d5a603 JK |
14866 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) |
14867 | { | |
14868 | /* The default DWARF 2 accessibility for members is public, the default | |
14869 | accessibility for inheritance is private. */ | |
14870 | ||
14871 | if (die->tag != DW_TAG_inheritance) | |
14872 | return DW_ACCESS_public; | |
14873 | else | |
14874 | return DW_ACCESS_private; | |
14875 | } | |
14876 | else | |
14877 | { | |
14878 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14879 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14880 | depends on the container kind. */ | |
14881 | ||
14882 | if (die->parent->tag == DW_TAG_class_type) | |
14883 | return DW_ACCESS_private; | |
14884 | else | |
14885 | return DW_ACCESS_public; | |
14886 | } | |
14887 | } | |
14888 | ||
74ac6d43 TT |
14889 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14890 | offset. If the attribute was not found return 0, otherwise return | |
14891 | 1. If it was found but could not properly be handled, set *OFFSET | |
14892 | to 0. */ | |
14893 | ||
14894 | static int | |
14895 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14896 | LONGEST *offset) | |
14897 | { | |
14898 | struct attribute *attr; | |
14899 | ||
14900 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14901 | if (attr != NULL) | |
14902 | { | |
14903 | *offset = 0; | |
14904 | ||
14905 | /* Note that we do not check for a section offset first here. | |
14906 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14907 | so if we see it, we can assume that a constant form is really | |
14908 | a constant and not a section offset. */ | |
cd6c91b4 | 14909 | if (attr->form_is_constant ()) |
0826b30a | 14910 | *offset = attr->constant_value (0); |
cd6c91b4 | 14911 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14912 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14913 | else if (attr->form_is_block ()) |
9d2246fc | 14914 | *offset = decode_locdesc (attr->as_block (), cu); |
74ac6d43 TT |
14915 | else |
14916 | dwarf2_complex_location_expr_complaint (); | |
14917 | ||
14918 | return 1; | |
14919 | } | |
14920 | ||
14921 | return 0; | |
14922 | } | |
14923 | ||
7d79de9a TT |
14924 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
14925 | ||
14926 | static void | |
14927 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14928 | struct field *field) | |
14929 | { | |
14930 | struct attribute *attr; | |
14931 | ||
14932 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14933 | if (attr != NULL) | |
14934 | { | |
14935 | if (attr->form_is_constant ()) | |
14936 | { | |
14937 | LONGEST offset = attr->constant_value (0); | |
14938 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14939 | } | |
14940 | else if (attr->form_is_section_offset ()) | |
14941 | dwarf2_complex_location_expr_complaint (); | |
14942 | else if (attr->form_is_block ()) | |
14943 | { | |
14944 | bool handled; | |
9d2246fc | 14945 | CORE_ADDR offset = decode_locdesc (attr->as_block (), cu, &handled); |
7d79de9a TT |
14946 | if (handled) |
14947 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14948 | else | |
14949 | { | |
5e22e966 SM |
14950 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14951 | struct objfile *objfile = per_objfile->objfile; | |
7d79de9a TT |
14952 | struct dwarf2_locexpr_baton *dlbaton |
14953 | = XOBNEW (&objfile->objfile_obstack, | |
14954 | struct dwarf2_locexpr_baton); | |
9d2246fc TT |
14955 | dlbaton->data = attr->as_block ()->data; |
14956 | dlbaton->size = attr->as_block ()->size; | |
7d79de9a TT |
14957 | /* When using this baton, we want to compute the address |
14958 | of the field, not the value. This is why | |
14959 | is_reference is set to false here. */ | |
14960 | dlbaton->is_reference = false; | |
5e22e966 | 14961 | dlbaton->per_objfile = per_objfile; |
7d79de9a TT |
14962 | dlbaton->per_cu = cu->per_cu; |
14963 | ||
14964 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
14965 | } | |
14966 | } | |
14967 | else | |
14968 | dwarf2_complex_location_expr_complaint (); | |
14969 | } | |
14970 | } | |
14971 | ||
c906108c SS |
14972 | /* Add an aggregate field to the field list. */ |
14973 | ||
14974 | static void | |
107d2387 | 14975 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14976 | struct dwarf2_cu *cu) |
6e70227d | 14977 | { |
5e22e966 | 14978 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14979 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
14980 | struct nextfield *new_field; |
14981 | struct attribute *attr; | |
14982 | struct field *fp; | |
15d034d0 | 14983 | const char *fieldname = ""; |
c906108c | 14984 | |
7d0ccb61 DJ |
14985 | if (die->tag == DW_TAG_inheritance) |
14986 | { | |
be2daae6 TT |
14987 | fip->baseclasses.emplace_back (); |
14988 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14989 | } |
14990 | else | |
14991 | { | |
be2daae6 TT |
14992 | fip->fields.emplace_back (); |
14993 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14994 | } |
be2daae6 | 14995 | |
9c6a1327 TT |
14996 | new_field->offset = die->sect_off; |
14997 | ||
bf23a268 | 14998 | new_field->accessibility = dwarf2_access_attribute (die, cu); |
c906108c | 14999 | if (new_field->accessibility != DW_ACCESS_public) |
264fc0e2 | 15000 | fip->non_public_fields = true; |
60d5a603 | 15001 | |
e142c38c | 15002 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 15003 | if (attr != nullptr) |
23dca5c3 | 15004 | new_field->virtuality = attr->as_virtuality (); |
60d5a603 JK |
15005 | else |
15006 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15007 | |
15008 | fp = &new_field->field; | |
a9a9bd0f | 15009 | |
e142c38c | 15010 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15011 | { |
a9a9bd0f | 15012 | /* Data member other than a C++ static data member. */ |
6e70227d | 15013 | |
c906108c | 15014 | /* Get type of field. */ |
5d14b6e5 | 15015 | fp->set_type (die_type (die, cu)); |
c906108c | 15016 | |
d6a843b5 | 15017 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15018 | |
c906108c | 15019 | /* Get bit size of field (zero if none). */ |
e142c38c | 15020 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 15021 | if (attr != nullptr) |
c906108c | 15022 | { |
529908cb | 15023 | FIELD_BITSIZE (*fp) = attr->constant_value (0); |
c906108c SS |
15024 | } |
15025 | else | |
15026 | { | |
15027 | FIELD_BITSIZE (*fp) = 0; | |
15028 | } | |
15029 | ||
15030 | /* Get bit offset of field. */ | |
7d79de9a | 15031 | handle_data_member_location (die, cu, fp); |
e142c38c | 15032 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
7c184d33 | 15033 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c | 15034 | { |
d5a22e77 | 15035 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
15036 | { |
15037 | /* For big endian bits, the DW_AT_bit_offset gives the | |
dda83cd7 SM |
15038 | additional bit offset from the MSB of the containing |
15039 | anonymous object to the MSB of the field. We don't | |
15040 | have to do anything special since we don't need to | |
15041 | know the size of the anonymous object. */ | |
529908cb | 15042 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) |
7c184d33 | 15043 | + attr->constant_value (0))); |
c906108c SS |
15044 | } |
15045 | else | |
15046 | { | |
15047 | /* For little endian bits, compute the bit offset to the | |
dda83cd7 SM |
15048 | MSB of the anonymous object, subtract off the number of |
15049 | bits from the MSB of the field to the MSB of the | |
15050 | object, and then subtract off the number of bits of | |
15051 | the field itself. The result is the bit offset of | |
15052 | the LSB of the field. */ | |
c906108c | 15053 | int anonymous_size; |
7c184d33 | 15054 | int bit_offset = attr->constant_value (0); |
c906108c | 15055 | |
e142c38c | 15056 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
7c184d33 | 15057 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c SS |
15058 | { |
15059 | /* The size of the anonymous object containing | |
15060 | the bit field is explicit, so use the | |
15061 | indicated size (in bytes). */ | |
7c184d33 | 15062 | anonymous_size = attr->constant_value (0); |
c906108c SS |
15063 | } |
15064 | else | |
15065 | { | |
15066 | /* The size of the anonymous object containing | |
15067 | the bit field must be inferred from the type | |
15068 | attribute of the data member containing the | |
15069 | bit field. */ | |
5d14b6e5 | 15070 | anonymous_size = TYPE_LENGTH (fp->type ()); |
c906108c | 15071 | } |
f41f5e61 PA |
15072 | SET_FIELD_BITPOS (*fp, |
15073 | (FIELD_BITPOS (*fp) | |
15074 | + anonymous_size * bits_per_byte | |
15075 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15076 | } |
15077 | } | |
da5b30da AA |
15078 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15079 | if (attr != NULL) | |
15080 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 15081 | + attr->constant_value (0))); |
c906108c SS |
15082 | |
15083 | /* Get name of field. */ | |
39cbfefa DJ |
15084 | fieldname = dwarf2_name (die, cu); |
15085 | if (fieldname == NULL) | |
15086 | fieldname = ""; | |
d8151005 DJ |
15087 | |
15088 | /* The name is already allocated along with this objfile, so we don't | |
15089 | need to duplicate it for the type. */ | |
15090 | fp->name = fieldname; | |
c906108c SS |
15091 | |
15092 | /* Change accessibility for artificial fields (e.g. virtual table | |
dda83cd7 | 15093 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15094 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15095 | { |
d48cc9dd | 15096 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c | 15097 | new_field->accessibility = DW_ACCESS_private; |
264fc0e2 | 15098 | fip->non_public_fields = true; |
c906108c SS |
15099 | } |
15100 | } | |
a9a9bd0f | 15101 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15102 | { |
a9a9bd0f DC |
15103 | /* C++ static member. */ |
15104 | ||
15105 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15106 | is a declaration, but all versions of G++ as of this writing | |
15107 | (so through at least 3.2.1) incorrectly generate | |
15108 | DW_TAG_variable tags. */ | |
6e70227d | 15109 | |
ff355380 | 15110 | const char *physname; |
c906108c | 15111 | |
a9a9bd0f | 15112 | /* Get name of field. */ |
39cbfefa DJ |
15113 | fieldname = dwarf2_name (die, cu); |
15114 | if (fieldname == NULL) | |
c906108c SS |
15115 | return; |
15116 | ||
254e6b9e | 15117 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15118 | if (attr |
15119 | /* Only create a symbol if this is an external value. | |
15120 | new_symbol checks this and puts the value in the global symbol | |
15121 | table, which we want. If it is not external, new_symbol | |
15122 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15123 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15124 | { |
15125 | /* A static const member, not much different than an enum as far as | |
15126 | we're concerned, except that we can support more types. */ | |
15127 | new_symbol (die, NULL, cu); | |
15128 | } | |
15129 | ||
2df3850c | 15130 | /* Get physical name. */ |
ff355380 | 15131 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15132 | |
d8151005 DJ |
15133 | /* The name is already allocated along with this objfile, so we don't |
15134 | need to duplicate it for the type. */ | |
15135 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
5d14b6e5 | 15136 | fp->set_type (die_type (die, cu)); |
d8151005 | 15137 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15138 | } |
15139 | else if (die->tag == DW_TAG_inheritance) | |
15140 | { | |
74ac6d43 | 15141 | /* C++ base class field. */ |
7d79de9a | 15142 | handle_data_member_location (die, cu, fp); |
c906108c | 15143 | FIELD_BITSIZE (*fp) = 0; |
5d14b6e5 SM |
15144 | fp->set_type (die_type (die, cu)); |
15145 | FIELD_NAME (*fp) = fp->type ()->name (); | |
c906108c | 15146 | } |
2ddeaf8a TT |
15147 | else |
15148 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15149 | } |
15150 | ||
883fd55a KS |
15151 | /* Can the type given by DIE define another type? */ |
15152 | ||
15153 | static bool | |
15154 | type_can_define_types (const struct die_info *die) | |
15155 | { | |
15156 | switch (die->tag) | |
15157 | { | |
15158 | case DW_TAG_typedef: | |
15159 | case DW_TAG_class_type: | |
15160 | case DW_TAG_structure_type: | |
15161 | case DW_TAG_union_type: | |
15162 | case DW_TAG_enumeration_type: | |
15163 | return true; | |
15164 | ||
15165 | default: | |
15166 | return false; | |
15167 | } | |
15168 | } | |
15169 | ||
15170 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15171 | |
15172 | static void | |
883fd55a KS |
15173 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15174 | struct dwarf2_cu *cu) | |
6e70227d | 15175 | { |
be2daae6 TT |
15176 | struct decl_field fp; |
15177 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15178 | |
883fd55a | 15179 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15180 | |
883fd55a | 15181 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15182 | fp.name = dwarf2_name (die, cu); |
15183 | fp.type = read_type_die (die, cu); | |
98751a41 | 15184 | |
c191a687 | 15185 | /* Save accessibility. */ |
bf23a268 | 15186 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
c191a687 KS |
15187 | switch (accessibility) |
15188 | { | |
15189 | case DW_ACCESS_public: | |
15190 | /* The assumed value if neither private nor protected. */ | |
15191 | break; | |
15192 | case DW_ACCESS_private: | |
be2daae6 | 15193 | fp.is_private = 1; |
c191a687 KS |
15194 | break; |
15195 | case DW_ACCESS_protected: | |
be2daae6 | 15196 | fp.is_protected = 1; |
c191a687 | 15197 | break; |
c191a687 KS |
15198 | } |
15199 | ||
883fd55a | 15200 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15201 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15202 | else |
be2daae6 | 15203 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15204 | } |
15205 | ||
9c6a1327 TT |
15206 | /* A convenience typedef that's used when finding the discriminant |
15207 | field for a variant part. */ | |
1b95cdb7 SM |
15208 | typedef std::unordered_map<sect_offset, int, gdb::hash_enum<sect_offset>> |
15209 | offset_map_type; | |
9c6a1327 TT |
15210 | |
15211 | /* Compute the discriminant range for a given variant. OBSTACK is | |
15212 | where the results will be stored. VARIANT is the variant to | |
15213 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
15214 | or unsigned. */ | |
15215 | ||
15216 | static const gdb::array_view<discriminant_range> | |
15217 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
15218 | bool is_unsigned) | |
15219 | { | |
15220 | std::vector<discriminant_range> ranges; | |
15221 | ||
15222 | if (variant.default_branch) | |
15223 | return {}; | |
15224 | ||
15225 | if (variant.discr_list_data == nullptr) | |
15226 | { | |
15227 | discriminant_range r | |
15228 | = {variant.discriminant_value, variant.discriminant_value}; | |
15229 | ranges.push_back (r); | |
15230 | } | |
15231 | else | |
15232 | { | |
15233 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
15234 | variant.discr_list_data->size); | |
15235 | while (!data.empty ()) | |
15236 | { | |
15237 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
15238 | { | |
15239 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
15240 | break; | |
15241 | } | |
15242 | bool is_range = data[0] == DW_DSC_range; | |
15243 | data = data.slice (1); | |
15244 | ||
15245 | ULONGEST low, high; | |
15246 | unsigned int bytes_read; | |
15247 | ||
15248 | if (data.empty ()) | |
15249 | { | |
15250 | complaint (_("DW_AT_discr_list missing low value")); | |
15251 | break; | |
15252 | } | |
15253 | if (is_unsigned) | |
15254 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
15255 | else | |
15256 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
15257 | &bytes_read); | |
15258 | data = data.slice (bytes_read); | |
15259 | ||
15260 | if (is_range) | |
15261 | { | |
15262 | if (data.empty ()) | |
15263 | { | |
15264 | complaint (_("DW_AT_discr_list missing high value")); | |
15265 | break; | |
15266 | } | |
15267 | if (is_unsigned) | |
15268 | high = read_unsigned_leb128 (nullptr, data.data (), | |
15269 | &bytes_read); | |
15270 | else | |
15271 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
15272 | &bytes_read); | |
15273 | data = data.slice (bytes_read); | |
15274 | } | |
15275 | else | |
15276 | high = low; | |
15277 | ||
15278 | ranges.push_back ({ low, high }); | |
15279 | } | |
15280 | } | |
15281 | ||
15282 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
15283 | ranges.size ()); | |
15284 | std::copy (ranges.begin (), ranges.end (), result); | |
15285 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
15286 | } | |
15287 | ||
15288 | static const gdb::array_view<variant_part> create_variant_parts | |
15289 | (struct obstack *obstack, | |
15290 | const offset_map_type &offset_map, | |
15291 | struct field_info *fi, | |
15292 | const std::vector<variant_part_builder> &variant_parts); | |
15293 | ||
15294 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
15295 | the variant to fill in. OBSTACK is where any needed allocations | |
15296 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
15297 | fields for the type. FI describes the fields of the type we're | |
15298 | processing. FIELD is the variant field we're converting. */ | |
15299 | ||
15300 | static void | |
15301 | create_one_variant (variant &result, struct obstack *obstack, | |
15302 | const offset_map_type &offset_map, | |
15303 | struct field_info *fi, const variant_field &field) | |
15304 | { | |
15305 | result.discriminants = convert_variant_range (obstack, field, false); | |
15306 | result.first_field = field.first_field + fi->baseclasses.size (); | |
15307 | result.last_field = field.last_field + fi->baseclasses.size (); | |
15308 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
15309 | field.variant_parts); | |
15310 | } | |
15311 | ||
15312 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
15313 | is the variant part to fill in. OBSTACK is where any needed | |
15314 | allocations will be done. OFFSET_MAP holds the mapping from | |
15315 | section offsets to fields for the type. FI describes the fields of | |
15316 | the type we're processing. BUILDER is the variant part to be | |
15317 | converted. */ | |
15318 | ||
15319 | static void | |
15320 | create_one_variant_part (variant_part &result, | |
15321 | struct obstack *obstack, | |
15322 | const offset_map_type &offset_map, | |
15323 | struct field_info *fi, | |
15324 | const variant_part_builder &builder) | |
15325 | { | |
15326 | auto iter = offset_map.find (builder.discriminant_offset); | |
15327 | if (iter == offset_map.end ()) | |
15328 | { | |
15329 | result.discriminant_index = -1; | |
15330 | /* Doesn't matter. */ | |
15331 | result.is_unsigned = false; | |
15332 | } | |
15333 | else | |
15334 | { | |
15335 | result.discriminant_index = iter->second; | |
15336 | result.is_unsigned | |
c6d940a9 | 15337 | = fi->fields[result.discriminant_index].field.type ()->is_unsigned (); |
9c6a1327 TT |
15338 | } |
15339 | ||
15340 | size_t n = builder.variants.size (); | |
15341 | variant *output = new (obstack) variant[n]; | |
15342 | for (size_t i = 0; i < n; ++i) | |
15343 | create_one_variant (output[i], obstack, offset_map, fi, | |
15344 | builder.variants[i]); | |
15345 | ||
15346 | result.variants = gdb::array_view<variant> (output, n); | |
15347 | } | |
15348 | ||
15349 | /* Create a vector of variant parts that can be attached to a type. | |
15350 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
15351 | holds the mapping from section offsets to fields for the type. FI | |
15352 | describes the fields of the type we're processing. VARIANT_PARTS | |
15353 | is the vector to convert. */ | |
15354 | ||
15355 | static const gdb::array_view<variant_part> | |
15356 | create_variant_parts (struct obstack *obstack, | |
15357 | const offset_map_type &offset_map, | |
15358 | struct field_info *fi, | |
15359 | const std::vector<variant_part_builder> &variant_parts) | |
15360 | { | |
15361 | if (variant_parts.empty ()) | |
15362 | return {}; | |
15363 | ||
15364 | size_t n = variant_parts.size (); | |
15365 | variant_part *result = new (obstack) variant_part[n]; | |
15366 | for (size_t i = 0; i < n; ++i) | |
15367 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
15368 | variant_parts[i]); | |
15369 | ||
15370 | return gdb::array_view<variant_part> (result, n); | |
15371 | } | |
15372 | ||
15373 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
15374 | done. */ | |
15375 | ||
15376 | static void | |
15377 | add_variant_property (struct field_info *fip, struct type *type, | |
15378 | struct dwarf2_cu *cu) | |
15379 | { | |
15380 | /* Map section offsets of fields to their field index. Note the | |
15381 | field index here does not take the number of baseclasses into | |
15382 | account. */ | |
15383 | offset_map_type offset_map; | |
15384 | for (int i = 0; i < fip->fields.size (); ++i) | |
15385 | offset_map[fip->fields[i].offset] = i; | |
15386 | ||
5e22e966 | 15387 | struct objfile *objfile = cu->per_objfile->objfile; |
9c6a1327 TT |
15388 | gdb::array_view<variant_part> parts |
15389 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
15390 | fip->variant_parts); | |
15391 | ||
15392 | struct dynamic_prop prop; | |
8c2e4e06 SM |
15393 | prop.set_variant_parts ((gdb::array_view<variant_part> *) |
15394 | obstack_copy (&objfile->objfile_obstack, &parts, | |
15395 | sizeof (parts))); | |
9c6a1327 | 15396 | |
5c54719c | 15397 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
9c6a1327 TT |
15398 | } |
15399 | ||
c906108c SS |
15400 | /* Create the vector of fields, and attach it to the type. */ |
15401 | ||
15402 | static void | |
fba45db2 | 15403 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15404 | struct dwarf2_cu *cu) |
c906108c | 15405 | { |
317f7127 | 15406 | int nfields = fip->nfields (); |
c906108c SS |
15407 | |
15408 | /* Record the field count, allocate space for the array of fields, | |
15409 | and create blank accessibility bitfields if necessary. */ | |
5e33d5f4 | 15410 | type->set_num_fields (nfields); |
3cabb6b0 SM |
15411 | type->set_fields |
15412 | ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * nfields)); | |
c906108c | 15413 | |
b4ba55a1 | 15414 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15415 | { |
15416 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15417 | ||
15418 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15419 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15420 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15421 | ||
15422 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15423 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15424 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15425 | ||
774b6a14 TT |
15426 | TYPE_FIELD_IGNORE_BITS (type) = |
15427 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15428 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15429 | } |
15430 | ||
15431 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15432 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15433 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15434 | { |
be2daae6 | 15435 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15436 | unsigned char *pointer; |
c906108c SS |
15437 | |
15438 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15439 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15440 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15441 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15442 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15443 | } |
15444 | ||
9c6a1327 TT |
15445 | if (!fip->variant_parts.empty ()) |
15446 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 15447 | |
be2daae6 TT |
15448 | /* Copy the saved-up fields into the field vector. */ |
15449 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15450 | { |
be2daae6 TT |
15451 | struct nextfield &field |
15452 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15453 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15454 | |
ceacbf6e | 15455 | type->field (i) = field.field; |
be2daae6 | 15456 | switch (field.accessibility) |
c906108c | 15457 | { |
c5aa993b | 15458 | case DW_ACCESS_private: |
b4ba55a1 | 15459 | if (cu->language != language_ada) |
be2daae6 | 15460 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15461 | break; |
c906108c | 15462 | |
c5aa993b | 15463 | case DW_ACCESS_protected: |
b4ba55a1 | 15464 | if (cu->language != language_ada) |
be2daae6 | 15465 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15466 | break; |
c906108c | 15467 | |
c5aa993b JM |
15468 | case DW_ACCESS_public: |
15469 | break; | |
c906108c | 15470 | |
c5aa993b JM |
15471 | default: |
15472 | /* Unknown accessibility. Complain and treat it as public. */ | |
15473 | { | |
b98664d3 | 15474 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15475 | field.accessibility); |
c5aa993b JM |
15476 | } |
15477 | break; | |
c906108c | 15478 | } |
be2daae6 | 15479 | if (i < fip->baseclasses.size ()) |
c906108c | 15480 | { |
be2daae6 | 15481 | switch (field.virtuality) |
c906108c | 15482 | { |
c5aa993b JM |
15483 | case DW_VIRTUALITY_virtual: |
15484 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15485 | if (cu->language == language_ada) |
a73c6dcd | 15486 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15487 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15488 | break; |
c906108c SS |
15489 | } |
15490 | } | |
c906108c SS |
15491 | } |
15492 | } | |
15493 | ||
7d27a96d TT |
15494 | /* Return true if this member function is a constructor, false |
15495 | otherwise. */ | |
15496 | ||
15497 | static int | |
15498 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15499 | { | |
15500 | const char *fieldname; | |
fe978cb0 | 15501 | const char *type_name; |
7d27a96d TT |
15502 | int len; |
15503 | ||
15504 | if (die->parent == NULL) | |
15505 | return 0; | |
15506 | ||
15507 | if (die->parent->tag != DW_TAG_structure_type | |
15508 | && die->parent->tag != DW_TAG_union_type | |
15509 | && die->parent->tag != DW_TAG_class_type) | |
15510 | return 0; | |
15511 | ||
15512 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15513 | type_name = dwarf2_name (die->parent, cu); |
15514 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15515 | return 0; |
15516 | ||
15517 | len = strlen (fieldname); | |
fe978cb0 PA |
15518 | return (strncmp (fieldname, type_name, len) == 0 |
15519 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15520 | } |
15521 | ||
c906108c SS |
15522 | /* Add a member function to the proper fieldlist. */ |
15523 | ||
15524 | static void | |
107d2387 | 15525 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15526 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15527 | { |
5e22e966 | 15528 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 15529 | struct attribute *attr; |
c906108c | 15530 | int i; |
be2daae6 | 15531 | struct fnfieldlist *flp = nullptr; |
c906108c | 15532 | struct fn_field *fnp; |
15d034d0 | 15533 | const char *fieldname; |
f792889a | 15534 | struct type *this_type; |
c906108c | 15535 | |
b4ba55a1 | 15536 | if (cu->language == language_ada) |
a73c6dcd | 15537 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15538 | |
2df3850c | 15539 | /* Get name of member function. */ |
39cbfefa DJ |
15540 | fieldname = dwarf2_name (die, cu); |
15541 | if (fieldname == NULL) | |
2df3850c | 15542 | return; |
c906108c | 15543 | |
c906108c | 15544 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15545 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15546 | { |
27bfe10e | 15547 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15548 | { |
15549 | flp = &fip->fnfieldlists[i]; | |
15550 | break; | |
15551 | } | |
c906108c SS |
15552 | } |
15553 | ||
be2daae6 TT |
15554 | /* Create a new fnfieldlist if necessary. */ |
15555 | if (flp == nullptr) | |
c906108c | 15556 | { |
be2daae6 TT |
15557 | fip->fnfieldlists.emplace_back (); |
15558 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15559 | flp->name = fieldname; |
be2daae6 | 15560 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15561 | } |
15562 | ||
be2daae6 TT |
15563 | /* Create a new member function field and add it to the vector of |
15564 | fnfieldlists. */ | |
15565 | flp->fnfields.emplace_back (); | |
15566 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15567 | |
15568 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15569 | if (cu->language == language_cplus) |
be2daae6 TT |
15570 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15571 | die, cu); | |
3da10d80 KS |
15572 | else |
15573 | { | |
1d06ead6 | 15574 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15575 | fnp->physname = physname ? physname : ""; |
15576 | } | |
15577 | ||
c906108c | 15578 | fnp->type = alloc_type (objfile); |
f792889a | 15579 | this_type = read_type_die (die, cu); |
78134374 | 15580 | if (this_type && this_type->code () == TYPE_CODE_FUNC) |
c906108c | 15581 | { |
1f704f76 | 15582 | int nparams = this_type->num_fields (); |
c906108c | 15583 | |
f792889a | 15584 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15585 | of the method itself (TYPE_CODE_METHOD). */ |
15586 | smash_to_method_type (fnp->type, type, | |
f792889a | 15587 | TYPE_TARGET_TYPE (this_type), |
80fc5e77 | 15588 | this_type->fields (), |
1f704f76 | 15589 | this_type->num_fields (), |
a409645d | 15590 | this_type->has_varargs ()); |
c906108c SS |
15591 | |
15592 | /* Handle static member functions. | |
dda83cd7 SM |
15593 | Dwarf2 has no clean way to discern C++ static and non-static |
15594 | member functions. G++ helps GDB by marking the first | |
15595 | parameter for non-static member functions (which is the this | |
15596 | pointer) as artificial. We obtain this information from | |
15597 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15598 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15599 | fnp->voffset = VOFFSET_STATIC; |
15600 | } | |
15601 | else | |
b98664d3 | 15602 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15603 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15604 | |
15605 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15606 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15607 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15608 | |
3e43a32a MS |
15609 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15610 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15611 | |
15612 | /* Get accessibility. */ | |
bf23a268 | 15613 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
60d5a603 | 15614 | switch (accessibility) |
c906108c | 15615 | { |
60d5a603 JK |
15616 | case DW_ACCESS_private: |
15617 | fnp->is_private = 1; | |
15618 | break; | |
15619 | case DW_ACCESS_protected: | |
15620 | fnp->is_protected = 1; | |
15621 | break; | |
c906108c SS |
15622 | } |
15623 | ||
b02dede2 | 15624 | /* Check for artificial methods. */ |
e142c38c | 15625 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
c45bc3f8 | 15626 | if (attr && attr->as_boolean ()) |
b02dede2 DJ |
15627 | fnp->is_artificial = 1; |
15628 | ||
e35000a7 TBA |
15629 | /* Check for defaulted methods. */ |
15630 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
e8e5c158 TT |
15631 | if (attr != nullptr) |
15632 | fnp->defaulted = attr->defaulted (); | |
e35000a7 TBA |
15633 | |
15634 | /* Check for deleted methods. */ | |
15635 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
c45bc3f8 | 15636 | if (attr != nullptr && attr->as_boolean ()) |
e35000a7 TBA |
15637 | fnp->is_deleted = 1; |
15638 | ||
7d27a96d TT |
15639 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15640 | ||
0d564a31 | 15641 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15642 | function. For older versions of GCC, this is an offset in the |
15643 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15644 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15645 | to the object address. */ |
15646 | ||
e142c38c | 15647 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15648 | if (attr != nullptr) |
8e19ed76 | 15649 | { |
9d2246fc | 15650 | if (attr->form_is_block () && attr->as_block ()->size > 0) |
dda83cd7 | 15651 | { |
9d2246fc TT |
15652 | struct dwarf_block *block = attr->as_block (); |
15653 | ||
15654 | if (block->data[0] == DW_OP_constu) | |
aec5aa8b TT |
15655 | { |
15656 | /* Old-style GCC. */ | |
9d2246fc | 15657 | fnp->voffset = decode_locdesc (block, cu) + 2; |
aec5aa8b | 15658 | } |
9d2246fc TT |
15659 | else if (block->data[0] == DW_OP_deref |
15660 | || (block->size > 1 | |
15661 | && block->data[0] == DW_OP_deref_size | |
15662 | && block->data[1] == cu->header.addr_size)) | |
aec5aa8b | 15663 | { |
9d2246fc | 15664 | fnp->voffset = decode_locdesc (block, cu); |
aec5aa8b TT |
15665 | if ((fnp->voffset % cu->header.addr_size) != 0) |
15666 | dwarf2_complex_location_expr_complaint (); | |
15667 | else | |
15668 | fnp->voffset /= cu->header.addr_size; | |
15669 | fnp->voffset += 2; | |
15670 | } | |
15671 | else | |
15672 | dwarf2_complex_location_expr_complaint (); | |
15673 | ||
15674 | if (!fnp->fcontext) | |
7e993ebf KS |
15675 | { |
15676 | /* If there is no `this' field and no DW_AT_containing_type, | |
15677 | we cannot actually find a base class context for the | |
15678 | vtable! */ | |
1f704f76 | 15679 | if (this_type->num_fields () == 0 |
7e993ebf KS |
15680 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) |
15681 | { | |
b98664d3 | 15682 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15683 | "function \"%s\" (offset %s)"), |
15684 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15685 | } |
15686 | else | |
15687 | { | |
15688 | fnp->fcontext | |
940da03e | 15689 | = TYPE_TARGET_TYPE (this_type->field (0).type ()); |
7e993ebf KS |
15690 | } |
15691 | } | |
aec5aa8b | 15692 | } |
cd6c91b4 | 15693 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 15694 | { |
4d3c2250 | 15695 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 | 15696 | } |
8e19ed76 | 15697 | else |
dda83cd7 | 15698 | { |
4d3c2250 KB |
15699 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15700 | fieldname); | |
dda83cd7 | 15701 | } |
0d564a31 | 15702 | } |
d48cc9dd DJ |
15703 | else |
15704 | { | |
15705 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
23dca5c3 | 15706 | if (attr != nullptr && attr->as_virtuality () != DW_VIRTUALITY_none) |
d48cc9dd DJ |
15707 | { |
15708 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15709 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15710 | "but the vtable offset is not specified"), |
9d8780f0 | 15711 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15712 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15713 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15714 | } | |
15715 | } | |
c906108c SS |
15716 | } |
15717 | ||
15718 | /* Create the vector of member function fields, and attach it to the type. */ | |
15719 | ||
15720 | static void | |
fba45db2 | 15721 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15722 | struct dwarf2_cu *cu) |
c906108c | 15723 | { |
b4ba55a1 | 15724 | if (cu->language == language_ada) |
a73c6dcd | 15725 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15726 | |
c906108c SS |
15727 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15728 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15729 | TYPE_ALLOC (type, |
15730 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15731 | |
be2daae6 | 15732 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15733 | { |
be2daae6 | 15734 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15735 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15736 | |
be2daae6 TT |
15737 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15738 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15739 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15740 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15741 | ||
15742 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15743 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15744 | } |
15745 | ||
be2daae6 | 15746 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15747 | } |
15748 | ||
1168df01 JB |
15749 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15750 | language, zero otherwise. */ | |
15751 | static int | |
15752 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15753 | { | |
15754 | static const char vptr[] = "_vptr"; | |
15755 | ||
9c37b5ae TT |
15756 | /* Look for the C++ form of the vtable. */ |
15757 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15758 | return 1; |
15759 | ||
15760 | return 0; | |
15761 | } | |
15762 | ||
c0dd20ea | 15763 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15764 | functions, with the ABI-specified layout. If TYPE describes |
15765 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15766 | |
15767 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15768 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15769 | |
0b92b5bb TT |
15770 | static void |
15771 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15772 | { |
09e2d7c7 | 15773 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15774 | |
15775 | /* Check for a structure with no name and two children. */ | |
1f704f76 | 15776 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) |
0b92b5bb | 15777 | return; |
c0dd20ea DJ |
15778 | |
15779 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15780 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15781 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15782 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15783 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15784 | return; | |
c0dd20ea DJ |
15785 | |
15786 | /* Find the type of the method. */ | |
940da03e | 15787 | pfn_type = type->field (0).type (); |
c0dd20ea | 15788 | if (pfn_type == NULL |
78134374 SM |
15789 | || pfn_type->code () != TYPE_CODE_PTR |
15790 | || TYPE_TARGET_TYPE (pfn_type)->code () != TYPE_CODE_FUNC) | |
0b92b5bb | 15791 | return; |
c0dd20ea DJ |
15792 | |
15793 | /* Look for the "this" argument. */ | |
15794 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
1f704f76 | 15795 | if (pfn_type->num_fields () == 0 |
940da03e SM |
15796 | /* || pfn_type->field (0).type () == NULL */ |
15797 | || pfn_type->field (0).type ()->code () != TYPE_CODE_PTR) | |
0b92b5bb | 15798 | return; |
c0dd20ea | 15799 | |
940da03e | 15800 | self_type = TYPE_TARGET_TYPE (pfn_type->field (0).type ()); |
0b92b5bb | 15801 | new_type = alloc_type (objfile); |
09e2d7c7 | 15802 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
80fc5e77 | 15803 | pfn_type->fields (), pfn_type->num_fields (), |
a409645d | 15804 | pfn_type->has_varargs ()); |
0b92b5bb | 15805 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15806 | } |
1168df01 | 15807 | |
57567375 TT |
15808 | /* While some versions of GCC will generate complicated DWARF for an |
15809 | array (see quirk_ada_thick_pointer), more recent versions were | |
15810 | modified to emit an explicit thick pointer structure. However, in | |
15811 | this case, the array still has DWARF expressions for its ranges, | |
15812 | and these must be ignored. */ | |
15813 | ||
15814 | static void | |
15815 | quirk_ada_thick_pointer_struct (struct die_info *die, struct dwarf2_cu *cu, | |
15816 | struct type *type) | |
15817 | { | |
15818 | gdb_assert (cu->language == language_ada); | |
15819 | ||
15820 | /* Check for a structure with two children. */ | |
15821 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) | |
15822 | return; | |
15823 | ||
15824 | /* Check for P_ARRAY and P_BOUNDS members. */ | |
15825 | if (TYPE_FIELD_NAME (type, 0) == NULL | |
15826 | || strcmp (TYPE_FIELD_NAME (type, 0), "P_ARRAY") != 0 | |
15827 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15828 | || strcmp (TYPE_FIELD_NAME (type, 1), "P_BOUNDS") != 0) | |
15829 | return; | |
15830 | ||
15831 | /* Make sure we're looking at a pointer to an array. */ | |
15832 | if (type->field (0).type ()->code () != TYPE_CODE_PTR) | |
15833 | return; | |
15834 | struct type *ary_type = TYPE_TARGET_TYPE (type->field (0).type ()); | |
15835 | ||
15836 | while (ary_type->code () == TYPE_CODE_ARRAY) | |
15837 | { | |
15838 | /* The Ada code already knows how to handle these types, so all | |
15839 | that we need to do is turn the bounds into static bounds. */ | |
15840 | struct type *index_type = ary_type->index_type (); | |
15841 | ||
15842 | index_type->bounds ()->low.set_const_val (1); | |
15843 | index_type->bounds ()->high.set_const_val (0); | |
15844 | ||
15845 | /* Handle multi-dimensional arrays. */ | |
15846 | ary_type = TYPE_TARGET_TYPE (ary_type); | |
15847 | } | |
15848 | } | |
15849 | ||
2b4424c3 TT |
15850 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15851 | appropriate error checking and issuing complaints if there is a | |
15852 | problem. */ | |
15853 | ||
15854 | static ULONGEST | |
15855 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15856 | { | |
15857 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15858 | ||
15859 | if (attr == nullptr) | |
15860 | return 0; | |
15861 | ||
cd6c91b4 | 15862 | if (!attr->form_is_constant ()) |
2b4424c3 | 15863 | { |
b98664d3 | 15864 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15865 | " - DIE at %s [in module %s]"), |
15866 | sect_offset_str (die->sect_off), | |
5e22e966 | 15867 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15868 | return 0; |
15869 | } | |
15870 | ||
529908cb TT |
15871 | LONGEST val = attr->constant_value (0); |
15872 | if (val < 0) | |
2b4424c3 | 15873 | { |
529908cb TT |
15874 | complaint (_("DW_AT_alignment value must not be negative" |
15875 | " - DIE at %s [in module %s]"), | |
15876 | sect_offset_str (die->sect_off), | |
15877 | objfile_name (cu->per_objfile->objfile)); | |
15878 | return 0; | |
2b4424c3 | 15879 | } |
529908cb | 15880 | ULONGEST align = val; |
2b4424c3 TT |
15881 | |
15882 | if (align == 0) | |
15883 | { | |
b98664d3 | 15884 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15885 | " - DIE at %s [in module %s]"), |
15886 | sect_offset_str (die->sect_off), | |
5e22e966 | 15887 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15888 | return 0; |
15889 | } | |
15890 | if ((align & (align - 1)) != 0) | |
15891 | { | |
b98664d3 | 15892 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15893 | " - DIE at %s [in module %s]"), |
15894 | sect_offset_str (die->sect_off), | |
5e22e966 | 15895 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15896 | return 0; |
15897 | } | |
15898 | ||
15899 | return align; | |
15900 | } | |
15901 | ||
15902 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15903 | the alignment for TYPE. */ | |
15904 | ||
15905 | static void | |
15906 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15907 | struct type *type) | |
15908 | { | |
15909 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15910 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15911 | " - DIE at %s [in module %s]"), |
15912 | sect_offset_str (die->sect_off), | |
5e22e966 | 15913 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 15914 | } |
685b1105 | 15915 | |
e35000a7 TBA |
15916 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15917 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15918 | ||
15919 | static bool | |
15920 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15921 | { | |
15922 | switch (value) | |
15923 | { | |
15924 | case DW_CC_normal: | |
15925 | case DW_CC_pass_by_reference: | |
15926 | case DW_CC_pass_by_value: | |
15927 | return true; | |
15928 | ||
15929 | default: | |
15930 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15931 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
15932 | return false; |
15933 | } | |
15934 | } | |
15935 | ||
d0922fcf TBA |
15936 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15937 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
15938 | also according to GNU-specific values (see include/dwarf2.h). */ | |
15939 | ||
15940 | static bool | |
15941 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
15942 | { | |
15943 | switch (value) | |
15944 | { | |
15945 | case DW_CC_normal: | |
15946 | case DW_CC_program: | |
15947 | case DW_CC_nocall: | |
15948 | return true; | |
15949 | ||
15950 | case DW_CC_GNU_renesas_sh: | |
15951 | case DW_CC_GNU_borland_fastcall_i386: | |
15952 | case DW_CC_GDB_IBM_OpenCL: | |
15953 | return true; | |
15954 | ||
15955 | default: | |
15956 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15957 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
15958 | return false; |
15959 | } | |
15960 | } | |
15961 | ||
c906108c | 15962 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15963 | (definition) to create a type for the structure or union. Fill in |
15964 | the type's name and general properties; the members will not be | |
83655187 DE |
15965 | processed until process_structure_scope. A symbol table entry for |
15966 | the type will also not be done until process_structure_scope (assuming | |
15967 | the type has a name). | |
c906108c | 15968 | |
c767944b DJ |
15969 | NOTE: we need to call these functions regardless of whether or not the |
15970 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15971 | structure or union. This gets the type entered into our set of |
83655187 | 15972 | user defined types. */ |
c906108c | 15973 | |
f792889a | 15974 | static struct type * |
134d01f1 | 15975 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15976 | { |
5e22e966 | 15977 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
15978 | struct type *type; |
15979 | struct attribute *attr; | |
15d034d0 | 15980 | const char *name; |
c906108c | 15981 | |
348e048f DE |
15982 | /* If the definition of this type lives in .debug_types, read that type. |
15983 | Don't follow DW_AT_specification though, that will take us back up | |
15984 | the chain and we want to go down. */ | |
052c8bb8 | 15985 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15986 | if (attr != nullptr) |
348e048f | 15987 | { |
ac9ec31b | 15988 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15989 | |
ac9ec31b | 15990 | /* The type's CU may not be the same as CU. |
02142a6c | 15991 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15992 | return set_die_type (die, type, cu); |
15993 | } | |
15994 | ||
c0dd20ea | 15995 | type = alloc_type (objfile); |
c906108c | 15996 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15997 | |
39cbfefa DJ |
15998 | name = dwarf2_name (die, cu); |
15999 | if (name != NULL) | |
c906108c | 16000 | { |
987504bb | 16001 | if (cu->language == language_cplus |
c44af4eb TT |
16002 | || cu->language == language_d |
16003 | || cu->language == language_rust) | |
63d06c5c | 16004 | { |
15d034d0 | 16005 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
16006 | |
16007 | /* dwarf2_full_name might have already finished building the DIE's | |
16008 | type. If so, there is no need to continue. */ | |
16009 | if (get_die_type (die, cu) != NULL) | |
16010 | return get_die_type (die, cu); | |
16011 | ||
d0e39ea2 | 16012 | type->set_name (full_name); |
63d06c5c DC |
16013 | } |
16014 | else | |
16015 | { | |
d8151005 DJ |
16016 | /* The name is already allocated along with this objfile, so |
16017 | we don't need to duplicate it for the type. */ | |
d0e39ea2 | 16018 | type->set_name (name); |
63d06c5c | 16019 | } |
c906108c SS |
16020 | } |
16021 | ||
16022 | if (die->tag == DW_TAG_structure_type) | |
16023 | { | |
67607e24 | 16024 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
16025 | } |
16026 | else if (die->tag == DW_TAG_union_type) | |
16027 | { | |
67607e24 | 16028 | type->set_code (TYPE_CODE_UNION); |
c906108c SS |
16029 | } |
16030 | else | |
16031 | { | |
67607e24 | 16032 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
16033 | } |
16034 | ||
0cc2414c TT |
16035 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
16036 | TYPE_DECLARED_CLASS (type) = 1; | |
16037 | ||
e35000a7 TBA |
16038 | /* Store the calling convention in the type if it's available in |
16039 | the die. Otherwise the calling convention remains set to | |
16040 | the default value DW_CC_normal. */ | |
16041 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
16042 | if (attr != nullptr | |
529908cb | 16043 | && is_valid_DW_AT_calling_convention_for_type (attr->constant_value (0))) |
e35000a7 TBA |
16044 | { |
16045 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16046 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
529908cb | 16047 | = (enum dwarf_calling_convention) (attr->constant_value (0)); |
e35000a7 TBA |
16048 | } |
16049 | ||
e142c38c | 16050 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16051 | if (attr != nullptr) |
c906108c | 16052 | { |
cd6c91b4 | 16053 | if (attr->form_is_constant ()) |
dda83cd7 | 16054 | TYPE_LENGTH (type) = attr->constant_value (0); |
155bfbd3 JB |
16055 | else |
16056 | { | |
f8e89861 | 16057 | struct dynamic_prop prop; |
293e7e51 | 16058 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 16059 | type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); |
dda83cd7 | 16060 | TYPE_LENGTH (type) = 0; |
155bfbd3 | 16061 | } |
c906108c SS |
16062 | } |
16063 | else | |
16064 | { | |
16065 | TYPE_LENGTH (type) = 0; | |
16066 | } | |
16067 | ||
2b4424c3 TT |
16068 | maybe_set_alignment (cu, die, type); |
16069 | ||
5230b05a | 16070 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 16071 | { |
5230b05a WT |
16072 | /* ICC<14 does not output the required DW_AT_declaration on |
16073 | incomplete types, but gives them a size of zero. */ | |
b4b73759 | 16074 | type->set_is_stub (true); |
685b1105 JK |
16075 | } |
16076 | else | |
9baccff6 | 16077 | type->set_stub_is_supported (true); |
685b1105 | 16078 | |
dc718098 | 16079 | if (die_is_declaration (die, cu)) |
b4b73759 | 16080 | type->set_is_stub (true); |
a6c727b2 DJ |
16081 | else if (attr == NULL && die->child == NULL |
16082 | && producer_is_realview (cu->producer)) | |
16083 | /* RealView does not output the required DW_AT_declaration | |
16084 | on incomplete types. */ | |
b4b73759 | 16085 | type->set_is_stub (true); |
dc718098 | 16086 | |
c906108c SS |
16087 | /* We need to add the type field to the die immediately so we don't |
16088 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 16089 | type within the structure itself. */ |
1c379e20 | 16090 | set_die_type (die, type, cu); |
c906108c | 16091 | |
7e314c57 JK |
16092 | /* set_die_type should be already done. */ |
16093 | set_descriptive_type (type, die, cu); | |
16094 | ||
c767944b DJ |
16095 | return type; |
16096 | } | |
16097 | ||
9c6a1327 TT |
16098 | static void handle_struct_member_die |
16099 | (struct die_info *child_die, | |
16100 | struct type *type, | |
16101 | struct field_info *fi, | |
16102 | std::vector<struct symbol *> *template_args, | |
16103 | struct dwarf2_cu *cu); | |
16104 | ||
16105 | /* A helper for handle_struct_member_die that handles | |
16106 | DW_TAG_variant_part. */ | |
16107 | ||
16108 | static void | |
16109 | handle_variant_part (struct die_info *die, struct type *type, | |
16110 | struct field_info *fi, | |
16111 | std::vector<struct symbol *> *template_args, | |
16112 | struct dwarf2_cu *cu) | |
16113 | { | |
16114 | variant_part_builder *new_part; | |
16115 | if (fi->current_variant_part == nullptr) | |
16116 | { | |
16117 | fi->variant_parts.emplace_back (); | |
16118 | new_part = &fi->variant_parts.back (); | |
16119 | } | |
16120 | else if (!fi->current_variant_part->processing_variant) | |
16121 | { | |
16122 | complaint (_("nested DW_TAG_variant_part seen " | |
16123 | "- DIE at %s [in module %s]"), | |
16124 | sect_offset_str (die->sect_off), | |
5e22e966 | 16125 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16126 | return; |
16127 | } | |
16128 | else | |
16129 | { | |
16130 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
16131 | current.variant_parts.emplace_back (); | |
16132 | new_part = ¤t.variant_parts.back (); | |
16133 | } | |
16134 | ||
16135 | /* When we recurse, we want callees to add to this new variant | |
16136 | part. */ | |
16137 | scoped_restore save_current_variant_part | |
16138 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
16139 | ||
16140 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
16141 | if (discr == NULL) | |
16142 | { | |
16143 | /* It's a univariant form, an extension we support. */ | |
16144 | } | |
16145 | else if (discr->form_is_ref ()) | |
16146 | { | |
16147 | struct dwarf2_cu *target_cu = cu; | |
16148 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16149 | ||
16150 | new_part->discriminant_offset = target_die->sect_off; | |
16151 | } | |
16152 | else | |
16153 | { | |
16154 | complaint (_("DW_AT_discr does not have DIE reference form" | |
16155 | " - DIE at %s [in module %s]"), | |
16156 | sect_offset_str (die->sect_off), | |
5e22e966 | 16157 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16158 | } |
16159 | ||
16160 | for (die_info *child_die = die->child; | |
16161 | child_die != NULL; | |
16162 | child_die = child_die->sibling) | |
16163 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
16164 | } | |
16165 | ||
16166 | /* A helper for handle_struct_member_die that handles | |
16167 | DW_TAG_variant. */ | |
16168 | ||
16169 | static void | |
16170 | handle_variant (struct die_info *die, struct type *type, | |
16171 | struct field_info *fi, | |
16172 | std::vector<struct symbol *> *template_args, | |
16173 | struct dwarf2_cu *cu) | |
16174 | { | |
16175 | if (fi->current_variant_part == nullptr) | |
16176 | { | |
16177 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
16178 | "- DIE at %s [in module %s]"), | |
16179 | sect_offset_str (die->sect_off), | |
5e22e966 | 16180 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16181 | return; |
16182 | } | |
16183 | if (fi->current_variant_part->processing_variant) | |
16184 | { | |
16185 | complaint (_("nested DW_TAG_variant seen " | |
16186 | "- DIE at %s [in module %s]"), | |
16187 | sect_offset_str (die->sect_off), | |
5e22e966 | 16188 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16189 | return; |
16190 | } | |
16191 | ||
16192 | scoped_restore save_processing_variant | |
16193 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
16194 | true); | |
16195 | ||
16196 | fi->current_variant_part->variants.emplace_back (); | |
16197 | variant_field &variant = fi->current_variant_part->variants.back (); | |
16198 | variant.first_field = fi->fields.size (); | |
16199 | ||
16200 | /* In a variant we want to get the discriminant and also add a | |
16201 | field for our sole member child. */ | |
16202 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
cae21f8e | 16203 | if (discr == nullptr || !discr->form_is_constant ()) |
9c6a1327 TT |
16204 | { |
16205 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
9d2246fc | 16206 | if (discr == nullptr || discr->as_block ()->size == 0) |
9c6a1327 TT |
16207 | variant.default_branch = true; |
16208 | else | |
9d2246fc | 16209 | variant.discr_list_data = discr->as_block (); |
9c6a1327 TT |
16210 | } |
16211 | else | |
cae21f8e | 16212 | variant.discriminant_value = discr->constant_value (0); |
9c6a1327 TT |
16213 | |
16214 | for (die_info *variant_child = die->child; | |
16215 | variant_child != NULL; | |
16216 | variant_child = variant_child->sibling) | |
16217 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
16218 | ||
16219 | variant.last_field = fi->fields.size (); | |
16220 | } | |
16221 | ||
2ddeaf8a TT |
16222 | /* A helper for process_structure_scope that handles a single member |
16223 | DIE. */ | |
16224 | ||
16225 | static void | |
16226 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
16227 | struct field_info *fi, | |
16228 | std::vector<struct symbol *> *template_args, | |
16229 | struct dwarf2_cu *cu) | |
16230 | { | |
16231 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 16232 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
16233 | { |
16234 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
16235 | should be a DW_TAG_member that is a declaration, but | |
16236 | all versions of G++ as of this writing (so through at | |
16237 | least 3.2.1) incorrectly generate DW_TAG_variable | |
16238 | tags for them instead. */ | |
16239 | dwarf2_add_field (fi, child_die, cu); | |
16240 | } | |
16241 | else if (child_die->tag == DW_TAG_subprogram) | |
16242 | { | |
16243 | /* Rust doesn't have member functions in the C++ sense. | |
16244 | However, it does emit ordinary functions as children | |
16245 | of a struct DIE. */ | |
16246 | if (cu->language == language_rust) | |
16247 | read_func_scope (child_die, cu); | |
16248 | else | |
16249 | { | |
16250 | /* C++ member function. */ | |
16251 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
16252 | } | |
16253 | } | |
16254 | else if (child_die->tag == DW_TAG_inheritance) | |
16255 | { | |
16256 | /* C++ base class field. */ | |
16257 | dwarf2_add_field (fi, child_die, cu); | |
16258 | } | |
16259 | else if (type_can_define_types (child_die)) | |
16260 | dwarf2_add_type_defn (fi, child_die, cu); | |
16261 | else if (child_die->tag == DW_TAG_template_type_param | |
16262 | || child_die->tag == DW_TAG_template_value_param) | |
16263 | { | |
16264 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
16265 | ||
16266 | if (arg != NULL) | |
16267 | template_args->push_back (arg); | |
16268 | } | |
9c6a1327 TT |
16269 | else if (child_die->tag == DW_TAG_variant_part) |
16270 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 16271 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 16272 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
16273 | } |
16274 | ||
c767944b DJ |
16275 | /* Finish creating a structure or union type, including filling in |
16276 | its members and creating a symbol for it. */ | |
16277 | ||
16278 | static void | |
16279 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16280 | { | |
5e22e966 | 16281 | struct objfile *objfile = cu->per_objfile->objfile; |
ca040673 | 16282 | struct die_info *child_die; |
c767944b DJ |
16283 | struct type *type; |
16284 | ||
16285 | type = get_die_type (die, cu); | |
16286 | if (type == NULL) | |
16287 | type = read_structure_type (die, cu); | |
16288 | ||
3e1d3d8c | 16289 | bool has_template_parameters = false; |
e142c38c | 16290 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16291 | { |
16292 | struct field_info fi; | |
2f4732b0 | 16293 | std::vector<struct symbol *> template_args; |
c906108c | 16294 | |
639d11d3 | 16295 | child_die = die->child; |
c906108c SS |
16296 | |
16297 | while (child_die && child_die->tag) | |
16298 | { | |
2ddeaf8a | 16299 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 16300 | child_die = child_die->sibling; |
c906108c SS |
16301 | } |
16302 | ||
34eaf542 | 16303 | /* Attach template arguments to type. */ |
2f4732b0 | 16304 | if (!template_args.empty ()) |
34eaf542 | 16305 | { |
3e1d3d8c | 16306 | has_template_parameters = true; |
34eaf542 | 16307 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16308 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16309 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16310 | = XOBNEWVEC (&objfile->objfile_obstack, |
16311 | struct symbol *, | |
16312 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16313 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16314 | template_args.data (), |
34eaf542 TT |
16315 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16316 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16317 | } |
16318 | ||
c906108c | 16319 | /* Attach fields and member functions to the type. */ |
317f7127 | 16320 | if (fi.nfields () > 0) |
e7c27a73 | 16321 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16322 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16323 | { |
e7c27a73 | 16324 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16325 | |
c5aa993b | 16326 | /* Get the type which refers to the base class (possibly this |
c906108c | 16327 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16328 | class from the DW_AT_containing_type attribute. This use of |
16329 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16330 | |
e142c38c | 16331 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16332 | { |
e7c27a73 | 16333 | struct type *t = die_containing_type (die, cu); |
c906108c | 16334 | |
ae6ae975 | 16335 | set_type_vptr_basetype (type, t); |
c906108c SS |
16336 | if (type == t) |
16337 | { | |
c906108c SS |
16338 | int i; |
16339 | ||
16340 | /* Our own class provides vtbl ptr. */ | |
1f704f76 | 16341 | for (i = t->num_fields () - 1; |
c906108c SS |
16342 | i >= TYPE_N_BASECLASSES (t); |
16343 | --i) | |
16344 | { | |
0d5cff50 | 16345 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16346 | |
dda83cd7 | 16347 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16348 | { |
ae6ae975 | 16349 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16350 | break; |
16351 | } | |
16352 | } | |
16353 | ||
16354 | /* Complain if virtual function table field not found. */ | |
16355 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16356 | complaint (_("virtual function table pointer " |
3e43a32a | 16357 | "not found when defining class '%s'"), |
7d93a1e0 | 16358 | type->name () ? type->name () : ""); |
c906108c SS |
16359 | } |
16360 | else | |
16361 | { | |
ae6ae975 | 16362 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16363 | } |
16364 | } | |
f6235d4c | 16365 | else if (cu->producer |
61012eef | 16366 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16367 | { |
16368 | /* The IBM XLC compiler does not provide direct indication | |
dda83cd7 SM |
16369 | of the containing type, but the vtable pointer is |
16370 | always named __vfp. */ | |
f6235d4c EZ |
16371 | |
16372 | int i; | |
16373 | ||
1f704f76 | 16374 | for (i = type->num_fields () - 1; |
f6235d4c EZ |
16375 | i >= TYPE_N_BASECLASSES (type); |
16376 | --i) | |
16377 | { | |
16378 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16379 | { | |
ae6ae975 DE |
16380 | set_type_vptr_fieldno (type, i); |
16381 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16382 | break; |
16383 | } | |
16384 | } | |
16385 | } | |
c906108c | 16386 | } |
98751a41 JK |
16387 | |
16388 | /* Copy fi.typedef_field_list linked list elements content into the | |
16389 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16390 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16391 | { |
be2daae6 | 16392 | int count = fi.typedef_field_list.size (); |
98751a41 | 16393 | |
a0d7a4ff | 16394 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16395 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16396 | = ((struct decl_field *) |
be2daae6 TT |
16397 | TYPE_ALLOC (type, |
16398 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16399 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16400 | |
be2daae6 TT |
16401 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16402 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16403 | } |
c767944b | 16404 | |
883fd55a KS |
16405 | /* Copy fi.nested_types_list linked list elements content into the |
16406 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16407 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16408 | { |
be2daae6 | 16409 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16410 | |
16411 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16412 | TYPE_NESTED_TYPES_ARRAY (type) | |
16413 | = ((struct decl_field *) | |
be2daae6 TT |
16414 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16415 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16416 | |
be2daae6 TT |
16417 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16418 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16419 | } |
c906108c | 16420 | } |
63d06c5c | 16421 | |
bb5ed363 | 16422 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16423 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16424 | cu->rust_unions.push_back (type); | |
57567375 TT |
16425 | else if (cu->language == language_ada) |
16426 | quirk_ada_thick_pointer_struct (die, cu, type); | |
0b92b5bb | 16427 | |
90aeadfc DC |
16428 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16429 | snapshots) has been known to create a die giving a declaration | |
16430 | for a class that has, as a child, a die giving a definition for a | |
16431 | nested class. So we have to process our children even if the | |
16432 | current die is a declaration. Normally, of course, a declaration | |
16433 | won't have any children at all. */ | |
134d01f1 | 16434 | |
ca040673 DE |
16435 | child_die = die->child; |
16436 | ||
90aeadfc DC |
16437 | while (child_die != NULL && child_die->tag) |
16438 | { | |
16439 | if (child_die->tag == DW_TAG_member | |
16440 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16441 | || child_die->tag == DW_TAG_inheritance |
16442 | || child_die->tag == DW_TAG_template_value_param | |
16443 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16444 | { |
90aeadfc | 16445 | /* Do nothing. */ |
134d01f1 | 16446 | } |
90aeadfc DC |
16447 | else |
16448 | process_die (child_die, cu); | |
134d01f1 | 16449 | |
436c571c | 16450 | child_die = child_die->sibling; |
134d01f1 DJ |
16451 | } |
16452 | ||
fa4028e9 JB |
16453 | /* Do not consider external references. According to the DWARF standard, |
16454 | these DIEs are identified by the fact that they have no byte_size | |
16455 | attribute, and a declaration attribute. */ | |
16456 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15cd93d0 TV |
16457 | || !die_is_declaration (die, cu) |
16458 | || dwarf2_attr (die, DW_AT_signature, cu) != NULL) | |
3e1d3d8c TT |
16459 | { |
16460 | struct symbol *sym = new_symbol (die, type, cu); | |
16461 | ||
16462 | if (has_template_parameters) | |
16463 | { | |
a776957c TT |
16464 | struct symtab *symtab; |
16465 | if (sym != nullptr) | |
16466 | symtab = symbol_symtab (sym); | |
16467 | else if (cu->line_header != nullptr) | |
16468 | { | |
16469 | /* Any related symtab will do. */ | |
16470 | symtab | |
7ba99d21 | 16471 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
16472 | } |
16473 | else | |
16474 | { | |
16475 | symtab = nullptr; | |
16476 | complaint (_("could not find suitable " | |
16477 | "symtab for template parameter" | |
16478 | " - DIE at %s [in module %s]"), | |
16479 | sect_offset_str (die->sect_off), | |
16480 | objfile_name (objfile)); | |
16481 | } | |
16482 | ||
16483 | if (symtab != nullptr) | |
16484 | { | |
16485 | /* Make sure that the symtab is set on the new symbols. | |
16486 | Even though they don't appear in this symtab directly, | |
16487 | other parts of gdb assume that symbols do, and this is | |
16488 | reasonably true. */ | |
16489 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16490 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16491 | } | |
3e1d3d8c TT |
16492 | } |
16493 | } | |
134d01f1 DJ |
16494 | } |
16495 | ||
ed6acedd TT |
16496 | /* Assuming DIE is an enumeration type, and TYPE is its associated |
16497 | type, update TYPE using some information only available in DIE's | |
16498 | children. In particular, the fields are computed. */ | |
55426c9d JB |
16499 | |
16500 | static void | |
16501 | update_enumeration_type_from_children (struct die_info *die, | |
16502 | struct type *type, | |
16503 | struct dwarf2_cu *cu) | |
16504 | { | |
60f7655a | 16505 | struct die_info *child_die; |
55426c9d JB |
16506 | int unsigned_enum = 1; |
16507 | int flag_enum = 1; | |
55426c9d | 16508 | |
8268c778 | 16509 | auto_obstack obstack; |
ed6acedd | 16510 | std::vector<struct field> fields; |
55426c9d | 16511 | |
60f7655a DE |
16512 | for (child_die = die->child; |
16513 | child_die != NULL && child_die->tag; | |
436c571c | 16514 | child_die = child_die->sibling) |
55426c9d JB |
16515 | { |
16516 | struct attribute *attr; | |
16517 | LONGEST value; | |
16518 | const gdb_byte *bytes; | |
16519 | struct dwarf2_locexpr_baton *baton; | |
16520 | const char *name; | |
60f7655a | 16521 | |
55426c9d JB |
16522 | if (child_die->tag != DW_TAG_enumerator) |
16523 | continue; | |
16524 | ||
16525 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16526 | if (attr == NULL) | |
16527 | continue; | |
16528 | ||
16529 | name = dwarf2_name (child_die, cu); | |
16530 | if (name == NULL) | |
16531 | name = "<anonymous enumerator>"; | |
16532 | ||
16533 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16534 | &value, &bytes, &baton); | |
16535 | if (value < 0) | |
16536 | { | |
16537 | unsigned_enum = 0; | |
16538 | flag_enum = 0; | |
16539 | } | |
55426c9d | 16540 | else |
edd45eb0 SM |
16541 | { |
16542 | if (count_one_bits_ll (value) >= 2) | |
16543 | flag_enum = 0; | |
edd45eb0 | 16544 | } |
55426c9d | 16545 | |
ed6acedd TT |
16546 | fields.emplace_back (); |
16547 | struct field &field = fields.back (); | |
16548 | FIELD_NAME (field) = dwarf2_physname (name, child_die, cu); | |
16549 | SET_FIELD_ENUMVAL (field, value); | |
16550 | } | |
16551 | ||
16552 | if (!fields.empty ()) | |
16553 | { | |
5e33d5f4 | 16554 | type->set_num_fields (fields.size ()); |
3cabb6b0 SM |
16555 | type->set_fields |
16556 | ((struct field *) | |
16557 | TYPE_ALLOC (type, sizeof (struct field) * fields.size ())); | |
80fc5e77 | 16558 | memcpy (type->fields (), fields.data (), |
ed6acedd | 16559 | sizeof (struct field) * fields.size ()); |
55426c9d JB |
16560 | } |
16561 | ||
16562 | if (unsigned_enum) | |
653223d3 SM |
16563 | type->set_is_unsigned (true); |
16564 | ||
55426c9d JB |
16565 | if (flag_enum) |
16566 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16567 | } |
16568 | ||
134d01f1 DJ |
16569 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16570 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16571 | |
f792889a | 16572 | static struct type * |
134d01f1 | 16573 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16574 | { |
5e22e966 | 16575 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16576 | struct type *type; |
c906108c | 16577 | struct attribute *attr; |
0114d602 | 16578 | const char *name; |
134d01f1 | 16579 | |
348e048f DE |
16580 | /* If the definition of this type lives in .debug_types, read that type. |
16581 | Don't follow DW_AT_specification though, that will take us back up | |
16582 | the chain and we want to go down. */ | |
052c8bb8 | 16583 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16584 | if (attr != nullptr) |
348e048f | 16585 | { |
ac9ec31b | 16586 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16587 | |
ac9ec31b | 16588 | /* The type's CU may not be the same as CU. |
02142a6c | 16589 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16590 | return set_die_type (die, type, cu); |
16591 | } | |
16592 | ||
c906108c SS |
16593 | type = alloc_type (objfile); |
16594 | ||
67607e24 | 16595 | type->set_code (TYPE_CODE_ENUM); |
94af9270 | 16596 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16597 | if (name != NULL) |
d0e39ea2 | 16598 | type->set_name (name); |
c906108c | 16599 | |
0626fc76 TT |
16600 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16601 | if (attr != NULL) | |
16602 | { | |
16603 | struct type *underlying_type = die_type (die, cu); | |
16604 | ||
16605 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16606 | } | |
16607 | ||
e142c38c | 16608 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16609 | if (attr != nullptr) |
c906108c | 16610 | { |
529908cb | 16611 | TYPE_LENGTH (type) = attr->constant_value (0); |
c906108c SS |
16612 | } |
16613 | else | |
16614 | { | |
16615 | TYPE_LENGTH (type) = 0; | |
16616 | } | |
16617 | ||
2b4424c3 TT |
16618 | maybe_set_alignment (cu, die, type); |
16619 | ||
137033e9 JB |
16620 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16621 | declared as private in the package spec, and then defined only | |
16622 | inside the package body. Such types are known as Taft Amendment | |
16623 | Types. When another package uses such a type, an incomplete DIE | |
16624 | may be generated by the compiler. */ | |
02eb380e | 16625 | if (die_is_declaration (die, cu)) |
b4b73759 | 16626 | type->set_is_stub (true); |
02eb380e | 16627 | |
0626fc76 TT |
16628 | /* If this type has an underlying type that is not a stub, then we |
16629 | may use its attributes. We always use the "unsigned" attribute | |
16630 | in this situation, because ordinarily we guess whether the type | |
16631 | is unsigned -- but the guess can be wrong and the underlying type | |
16632 | can tell us the reality. However, we defer to a local size | |
16633 | attribute if one exists, because this lets the compiler override | |
16634 | the underlying type if needed. */ | |
e46d3488 | 16635 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_TARGET_TYPE (type)->is_stub ()) |
0626fc76 | 16636 | { |
9e7c9a03 HD |
16637 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
16638 | underlying_type = check_typedef (underlying_type); | |
653223d3 SM |
16639 | |
16640 | type->set_is_unsigned (underlying_type->is_unsigned ()); | |
16641 | ||
0626fc76 | 16642 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 16643 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
653223d3 | 16644 | |
2b4424c3 | 16645 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
16646 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
16647 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
16648 | } |
16649 | ||
3d567982 TT |
16650 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16651 | ||
ed6acedd TT |
16652 | set_die_type (die, type, cu); |
16653 | ||
16654 | /* Finish the creation of this type by using the enum's children. | |
16655 | Note that, as usual, this must come after set_die_type to avoid | |
16656 | infinite recursion when trying to compute the names of the | |
16657 | enumerators. */ | |
16658 | update_enumeration_type_from_children (die, type, cu); | |
16659 | ||
16660 | return type; | |
134d01f1 DJ |
16661 | } |
16662 | ||
16663 | /* Given a pointer to a die which begins an enumeration, process all | |
16664 | the dies that define the members of the enumeration, and create the | |
16665 | symbol for the enumeration type. | |
16666 | ||
16667 | NOTE: We reverse the order of the element list. */ | |
16668 | ||
16669 | static void | |
16670 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16671 | { | |
f792889a | 16672 | struct type *this_type; |
134d01f1 | 16673 | |
f792889a DJ |
16674 | this_type = get_die_type (die, cu); |
16675 | if (this_type == NULL) | |
16676 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16677 | |
639d11d3 | 16678 | if (die->child != NULL) |
c906108c | 16679 | { |
9dc481d3 | 16680 | struct die_info *child_die; |
15d034d0 | 16681 | const char *name; |
9dc481d3 | 16682 | |
639d11d3 | 16683 | child_die = die->child; |
c906108c SS |
16684 | while (child_die && child_die->tag) |
16685 | { | |
16686 | if (child_die->tag != DW_TAG_enumerator) | |
16687 | { | |
e7c27a73 | 16688 | process_die (child_die, cu); |
c906108c SS |
16689 | } |
16690 | else | |
16691 | { | |
39cbfefa DJ |
16692 | name = dwarf2_name (child_die, cu); |
16693 | if (name) | |
ed6acedd | 16694 | new_symbol (child_die, this_type, cu); |
c906108c SS |
16695 | } |
16696 | ||
436c571c | 16697 | child_die = child_die->sibling; |
c906108c | 16698 | } |
c906108c | 16699 | } |
134d01f1 | 16700 | |
6c83ed52 TT |
16701 | /* If we are reading an enum from a .debug_types unit, and the enum |
16702 | is a declaration, and the enum is not the signatured type in the | |
16703 | unit, then we do not want to add a symbol for it. Adding a | |
16704 | symbol would in some cases obscure the true definition of the | |
16705 | enum, giving users an incomplete type when the definition is | |
16706 | actually available. Note that we do not want to do this for all | |
16707 | enums which are just declarations, because C++0x allows forward | |
16708 | enum declarations. */ | |
3019eac3 | 16709 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16710 | && die_is_declaration (die, cu)) |
16711 | { | |
52dc124a | 16712 | struct signatured_type *sig_type; |
6c83ed52 | 16713 | |
c0f78cd4 | 16714 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16715 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16716 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16717 | return; |
16718 | } | |
16719 | ||
f792889a | 16720 | new_symbol (die, this_type, cu); |
c906108c SS |
16721 | } |
16722 | ||
57567375 TT |
16723 | /* Helper function for quirk_ada_thick_pointer that examines a bounds |
16724 | expression for an index type and finds the corresponding field | |
16725 | offset in the hidden "P_BOUNDS" structure. Returns true on success | |
16726 | and updates *FIELD, false if it fails to recognize an | |
16727 | expression. */ | |
16728 | ||
16729 | static bool | |
16730 | recognize_bound_expression (struct die_info *die, enum dwarf_attribute name, | |
16731 | int *bounds_offset, struct field *field, | |
16732 | struct dwarf2_cu *cu) | |
16733 | { | |
16734 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
16735 | if (attr == nullptr || !attr->form_is_block ()) | |
16736 | return false; | |
16737 | ||
16738 | const struct dwarf_block *block = attr->as_block (); | |
16739 | const gdb_byte *start = block->data; | |
16740 | const gdb_byte *end = block->data + block->size; | |
16741 | ||
16742 | /* The expression to recognize generally looks like: | |
16743 | ||
16744 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16745 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
16746 | ||
16747 | However, the second "plus_uconst" may be missing: | |
16748 | ||
16749 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16750 | DW_OP_deref_size: 4) | |
16751 | ||
16752 | This happens when the field is at the start of the structure. | |
16753 | ||
16754 | Also, the final deref may not be sized: | |
16755 | ||
16756 | (DW_OP_push_object_address; DW_OP_plus_uconst: 4; DW_OP_deref; | |
16757 | DW_OP_deref) | |
16758 | ||
16759 | This happens when the size of the index type happens to be the | |
16760 | same as the architecture's word size. This can occur with or | |
16761 | without the second plus_uconst. */ | |
16762 | ||
16763 | if (end - start < 2) | |
16764 | return false; | |
16765 | if (*start++ != DW_OP_push_object_address) | |
16766 | return false; | |
16767 | if (*start++ != DW_OP_plus_uconst) | |
16768 | return false; | |
16769 | ||
16770 | uint64_t this_bound_off; | |
16771 | start = gdb_read_uleb128 (start, end, &this_bound_off); | |
16772 | if (start == nullptr || (int) this_bound_off != this_bound_off) | |
16773 | return false; | |
16774 | /* Update *BOUNDS_OFFSET if needed, or alternatively verify that it | |
16775 | is consistent among all bounds. */ | |
16776 | if (*bounds_offset == -1) | |
16777 | *bounds_offset = this_bound_off; | |
16778 | else if (*bounds_offset != this_bound_off) | |
16779 | return false; | |
16780 | ||
16781 | if (start == end || *start++ != DW_OP_deref) | |
16782 | return false; | |
16783 | ||
16784 | int offset = 0; | |
16785 | if (start ==end) | |
16786 | return false; | |
16787 | else if (*start == DW_OP_deref_size || *start == DW_OP_deref) | |
16788 | { | |
16789 | /* This means an offset of 0. */ | |
16790 | } | |
16791 | else if (*start++ != DW_OP_plus_uconst) | |
16792 | return false; | |
16793 | else | |
16794 | { | |
16795 | /* The size is the parameter to DW_OP_plus_uconst. */ | |
16796 | uint64_t val; | |
16797 | start = gdb_read_uleb128 (start, end, &val); | |
16798 | if (start == nullptr) | |
16799 | return false; | |
16800 | if ((int) val != val) | |
16801 | return false; | |
16802 | offset = val; | |
16803 | } | |
16804 | ||
16805 | if (start == end) | |
16806 | return false; | |
16807 | ||
16808 | uint64_t size; | |
16809 | if (*start == DW_OP_deref_size) | |
16810 | { | |
16811 | start = gdb_read_uleb128 (start + 1, end, &size); | |
16812 | if (start == nullptr) | |
16813 | return false; | |
16814 | } | |
16815 | else if (*start == DW_OP_deref) | |
16816 | { | |
16817 | size = cu->header.addr_size; | |
16818 | ++start; | |
16819 | } | |
16820 | else | |
16821 | return false; | |
16822 | ||
16823 | SET_FIELD_BITPOS (*field, 8 * offset); | |
16824 | if (size != TYPE_LENGTH (field->type ())) | |
16825 | FIELD_BITSIZE (*field) = 8 * size; | |
16826 | ||
16827 | return true; | |
16828 | } | |
16829 | ||
16830 | /* With -fgnat-encodings=minimal, gcc will emit some unusual DWARF for | |
16831 | some kinds of Ada arrays: | |
16832 | ||
16833 | <1><11db>: Abbrev Number: 7 (DW_TAG_array_type) | |
16834 | <11dc> DW_AT_name : (indirect string, offset: 0x1bb8): string | |
16835 | <11e0> DW_AT_data_location: 2 byte block: 97 6 | |
16836 | (DW_OP_push_object_address; DW_OP_deref) | |
16837 | <11e3> DW_AT_type : <0x1173> | |
16838 | <11e7> DW_AT_sibling : <0x1201> | |
16839 | <2><11eb>: Abbrev Number: 8 (DW_TAG_subrange_type) | |
16840 | <11ec> DW_AT_type : <0x1206> | |
16841 | <11f0> DW_AT_lower_bound : 6 byte block: 97 23 8 6 94 4 | |
16842 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16843 | DW_OP_deref_size: 4) | |
16844 | <11f7> DW_AT_upper_bound : 8 byte block: 97 23 8 6 23 4 94 4 | |
16845 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16846 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
16847 | ||
16848 | This actually represents a "thick pointer", which is a structure | |
16849 | with two elements: one that is a pointer to the array data, and one | |
16850 | that is a pointer to another structure; this second structure holds | |
16851 | the array bounds. | |
16852 | ||
16853 | This returns a new type on success, or nullptr if this didn't | |
16854 | recognize the type. */ | |
16855 | ||
16856 | static struct type * | |
16857 | quirk_ada_thick_pointer (struct die_info *die, struct dwarf2_cu *cu, | |
16858 | struct type *type) | |
16859 | { | |
16860 | struct attribute *attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
16861 | /* So far we've only seen this with block form. */ | |
16862 | if (attr == nullptr || !attr->form_is_block ()) | |
16863 | return nullptr; | |
16864 | ||
16865 | /* Note that this will fail if the structure layout is changed by | |
16866 | the compiler. However, we have no good way to recognize some | |
16867 | other layout, because we don't know what expression the compiler | |
16868 | might choose to emit should this happen. */ | |
16869 | struct dwarf_block *blk = attr->as_block (); | |
16870 | if (blk->size != 2 | |
16871 | || blk->data[0] != DW_OP_push_object_address | |
16872 | || blk->data[1] != DW_OP_deref) | |
16873 | return nullptr; | |
16874 | ||
16875 | int bounds_offset = -1; | |
16876 | int max_align = -1; | |
16877 | std::vector<struct field> range_fields; | |
16878 | for (struct die_info *child_die = die->child; | |
16879 | child_die; | |
16880 | child_die = child_die->sibling) | |
16881 | { | |
16882 | if (child_die->tag == DW_TAG_subrange_type) | |
16883 | { | |
16884 | struct type *underlying = read_subrange_index_type (child_die, cu); | |
16885 | ||
16886 | int this_align = type_align (underlying); | |
16887 | if (this_align > max_align) | |
16888 | max_align = this_align; | |
16889 | ||
16890 | range_fields.emplace_back (); | |
16891 | range_fields.emplace_back (); | |
16892 | ||
16893 | struct field &lower = range_fields[range_fields.size () - 2]; | |
16894 | struct field &upper = range_fields[range_fields.size () - 1]; | |
16895 | ||
16896 | lower.set_type (underlying); | |
16897 | FIELD_ARTIFICIAL (lower) = 1; | |
16898 | ||
16899 | upper.set_type (underlying); | |
16900 | FIELD_ARTIFICIAL (upper) = 1; | |
16901 | ||
16902 | if (!recognize_bound_expression (child_die, DW_AT_lower_bound, | |
16903 | &bounds_offset, &lower, cu) | |
16904 | || !recognize_bound_expression (child_die, DW_AT_upper_bound, | |
16905 | &bounds_offset, &upper, cu)) | |
16906 | return nullptr; | |
16907 | } | |
16908 | } | |
16909 | ||
16910 | /* This shouldn't really happen, but double-check that we found | |
16911 | where the bounds are stored. */ | |
16912 | if (bounds_offset == -1) | |
16913 | return nullptr; | |
16914 | ||
16915 | struct objfile *objfile = cu->per_objfile->objfile; | |
16916 | for (int i = 0; i < range_fields.size (); i += 2) | |
16917 | { | |
16918 | char name[20]; | |
16919 | ||
16920 | /* Set the name of each field in the bounds. */ | |
16921 | xsnprintf (name, sizeof (name), "LB%d", i / 2); | |
16922 | FIELD_NAME (range_fields[i]) = objfile->intern (name); | |
16923 | xsnprintf (name, sizeof (name), "UB%d", i / 2); | |
16924 | FIELD_NAME (range_fields[i + 1]) = objfile->intern (name); | |
16925 | } | |
16926 | ||
16927 | struct type *bounds = alloc_type (objfile); | |
16928 | bounds->set_code (TYPE_CODE_STRUCT); | |
16929 | ||
16930 | bounds->set_num_fields (range_fields.size ()); | |
16931 | bounds->set_fields | |
16932 | ((struct field *) TYPE_ALLOC (bounds, (bounds->num_fields () | |
16933 | * sizeof (struct field)))); | |
16934 | memcpy (bounds->fields (), range_fields.data (), | |
16935 | bounds->num_fields () * sizeof (struct field)); | |
16936 | ||
16937 | int last_fieldno = range_fields.size () - 1; | |
16938 | int bounds_size = (TYPE_FIELD_BITPOS (bounds, last_fieldno) / 8 | |
16939 | + TYPE_LENGTH (bounds->field (last_fieldno).type ())); | |
16940 | TYPE_LENGTH (bounds) = align_up (bounds_size, max_align); | |
16941 | ||
16942 | /* Rewrite the existing array type in place. Specifically, we | |
16943 | remove any dynamic properties we might have read, and we replace | |
16944 | the index types. */ | |
16945 | struct type *iter = type; | |
16946 | for (int i = 0; i < range_fields.size (); i += 2) | |
16947 | { | |
16948 | gdb_assert (iter->code () == TYPE_CODE_ARRAY); | |
16949 | iter->main_type->dyn_prop_list = nullptr; | |
16950 | iter->set_index_type | |
16951 | (create_static_range_type (NULL, bounds->field (i).type (), 1, 0)); | |
16952 | iter = TYPE_TARGET_TYPE (iter); | |
16953 | } | |
16954 | ||
16955 | struct type *result = alloc_type (objfile); | |
16956 | result->set_code (TYPE_CODE_STRUCT); | |
16957 | ||
16958 | result->set_num_fields (2); | |
16959 | result->set_fields | |
16960 | ((struct field *) TYPE_ZALLOC (result, (result->num_fields () | |
16961 | * sizeof (struct field)))); | |
16962 | ||
16963 | /* The names are chosen to coincide with what the compiler does with | |
16964 | -fgnat-encodings=all, which the Ada code in gdb already | |
16965 | understands. */ | |
16966 | TYPE_FIELD_NAME (result, 0) = "P_ARRAY"; | |
16967 | result->field (0).set_type (lookup_pointer_type (type)); | |
16968 | ||
16969 | TYPE_FIELD_NAME (result, 1) = "P_BOUNDS"; | |
16970 | result->field (1).set_type (lookup_pointer_type (bounds)); | |
16971 | SET_FIELD_BITPOS (result->field (1), 8 * bounds_offset); | |
16972 | ||
16973 | result->set_name (type->name ()); | |
16974 | TYPE_LENGTH (result) = (TYPE_LENGTH (result->field (0).type ()) | |
16975 | + TYPE_LENGTH (result->field (1).type ())); | |
16976 | ||
16977 | return result; | |
16978 | } | |
16979 | ||
c906108c SS |
16980 | /* Extract all information from a DW_TAG_array_type DIE and put it in |
16981 | the DIE's type field. For now, this only handles one dimensional | |
16982 | arrays. */ | |
16983 | ||
f792889a | 16984 | static struct type * |
e7c27a73 | 16985 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16986 | { |
5e22e966 | 16987 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16988 | struct die_info *child_die; |
7e314c57 | 16989 | struct type *type; |
c906108c | 16990 | struct type *element_type, *range_type, *index_type; |
c906108c | 16991 | struct attribute *attr; |
15d034d0 | 16992 | const char *name; |
a405673c | 16993 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16994 | unsigned int bit_stride = 0; |
c906108c | 16995 | |
e7c27a73 | 16996 | element_type = die_type (die, cu); |
c906108c | 16997 | |
7e314c57 JK |
16998 | /* The die_type call above may have already set the type for this DIE. */ |
16999 | type = get_die_type (die, cu); | |
17000 | if (type) | |
17001 | return type; | |
17002 | ||
dc53a7ad JB |
17003 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
17004 | if (attr != NULL) | |
a405673c JB |
17005 | { |
17006 | int stride_ok; | |
293e7e51 | 17007 | struct type *prop_type = cu->addr_sized_int_type (false); |
a405673c JB |
17008 | |
17009 | byte_stride_prop | |
17010 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
17011 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
17012 | prop_type); | |
a405673c JB |
17013 | if (!stride_ok) |
17014 | { | |
b98664d3 | 17015 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
17016 | " - DIE at %s [in module %s]"), |
17017 | sect_offset_str (die->sect_off), | |
5e22e966 | 17018 | objfile_name (cu->per_objfile->objfile)); |
a405673c JB |
17019 | /* Ignore this attribute. We will likely not be able to print |
17020 | arrays of this type correctly, but there is little we can do | |
17021 | to help if we cannot read the attribute's value. */ | |
17022 | byte_stride_prop = NULL; | |
17023 | } | |
17024 | } | |
dc53a7ad JB |
17025 | |
17026 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17027 | if (attr != NULL) | |
529908cb | 17028 | bit_stride = attr->constant_value (0); |
dc53a7ad | 17029 | |
c906108c SS |
17030 | /* Irix 6.2 native cc creates array types without children for |
17031 | arrays with unspecified length. */ | |
639d11d3 | 17032 | if (die->child == NULL) |
c906108c | 17033 | { |
46bf5051 | 17034 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 17035 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 17036 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 17037 | byte_stride_prop, bit_stride); |
f792889a | 17038 | return set_die_type (die, type, cu); |
c906108c SS |
17039 | } |
17040 | ||
791afaa2 | 17041 | std::vector<struct type *> range_types; |
639d11d3 | 17042 | child_die = die->child; |
c906108c SS |
17043 | while (child_die && child_die->tag) |
17044 | { | |
17045 | if (child_die->tag == DW_TAG_subrange_type) | |
17046 | { | |
f792889a | 17047 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 17048 | |
dda83cd7 SM |
17049 | if (child_type != NULL) |
17050 | { | |
0963b4bd | 17051 | /* The range type was succesfully read. Save it for the |
dda83cd7 | 17052 | array type creation. */ |
791afaa2 | 17053 | range_types.push_back (child_type); |
dda83cd7 | 17054 | } |
c906108c | 17055 | } |
436c571c | 17056 | child_die = child_die->sibling; |
c906108c SS |
17057 | } |
17058 | ||
17059 | /* Dwarf2 dimensions are output from left to right, create the | |
17060 | necessary array types in backwards order. */ | |
7ca2d3a3 | 17061 | |
c906108c | 17062 | type = element_type; |
7ca2d3a3 DL |
17063 | |
17064 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
17065 | { | |
17066 | int i = 0; | |
9a619af0 | 17067 | |
791afaa2 | 17068 | while (i < range_types.size ()) |
10f6a3ad TT |
17069 | { |
17070 | type = create_array_type_with_stride (NULL, type, range_types[i++], | |
17071 | byte_stride_prop, bit_stride); | |
17072 | bit_stride = 0; | |
17073 | byte_stride_prop = nullptr; | |
17074 | } | |
7ca2d3a3 DL |
17075 | } |
17076 | else | |
17077 | { | |
791afaa2 | 17078 | size_t ndim = range_types.size (); |
7ca2d3a3 | 17079 | while (ndim-- > 0) |
10f6a3ad TT |
17080 | { |
17081 | type = create_array_type_with_stride (NULL, type, range_types[ndim], | |
17082 | byte_stride_prop, bit_stride); | |
17083 | bit_stride = 0; | |
17084 | byte_stride_prop = nullptr; | |
17085 | } | |
7ca2d3a3 | 17086 | } |
c906108c | 17087 | |
f5f8a009 EZ |
17088 | /* Understand Dwarf2 support for vector types (like they occur on |
17089 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
17090 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
17091 | custom vendor extension. The main difference between a regular | |
17092 | array and the vector variant is that vectors are passed by value | |
17093 | to functions. */ | |
e142c38c | 17094 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 17095 | if (attr != nullptr) |
ea37ba09 | 17096 | make_vector_type (type); |
f5f8a009 | 17097 | |
dbc98a8b KW |
17098 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
17099 | implementation may choose to implement triple vectors using this | |
17100 | attribute. */ | |
17101 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb | 17102 | if (attr != nullptr && attr->form_is_unsigned ()) |
dbc98a8b | 17103 | { |
529908cb TT |
17104 | if (attr->as_unsigned () >= TYPE_LENGTH (type)) |
17105 | TYPE_LENGTH (type) = attr->as_unsigned (); | |
dbc98a8b | 17106 | else |
b98664d3 | 17107 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 17108 | "than the total size of elements")); |
dbc98a8b KW |
17109 | } |
17110 | ||
39cbfefa DJ |
17111 | name = dwarf2_name (die, cu); |
17112 | if (name) | |
d0e39ea2 | 17113 | type->set_name (name); |
6e70227d | 17114 | |
2b4424c3 TT |
17115 | maybe_set_alignment (cu, die, type); |
17116 | ||
57567375 TT |
17117 | struct type *replacement_type = nullptr; |
17118 | if (cu->language == language_ada) | |
17119 | { | |
17120 | replacement_type = quirk_ada_thick_pointer (die, cu, type); | |
17121 | if (replacement_type != nullptr) | |
17122 | type = replacement_type; | |
17123 | } | |
17124 | ||
0963b4bd | 17125 | /* Install the type in the die. */ |
57567375 | 17126 | set_die_type (die, type, cu, replacement_type != nullptr); |
7e314c57 JK |
17127 | |
17128 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17129 | set_descriptive_type (type, die, cu); |
17130 | ||
7e314c57 | 17131 | return type; |
c906108c SS |
17132 | } |
17133 | ||
7ca2d3a3 | 17134 | static enum dwarf_array_dim_ordering |
6e70227d | 17135 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
17136 | { |
17137 | struct attribute *attr; | |
17138 | ||
17139 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
17140 | ||
435d3d88 | 17141 | if (attr != nullptr) |
1bc397c5 TT |
17142 | { |
17143 | LONGEST val = attr->constant_value (-1); | |
17144 | if (val == DW_ORD_row_major || val == DW_ORD_col_major) | |
17145 | return (enum dwarf_array_dim_ordering) val; | |
17146 | } | |
7ca2d3a3 | 17147 | |
0963b4bd MS |
17148 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
17149 | opposite order to the dwarf2 specification, but data is still | |
17150 | laid out as per normal fortran. | |
7ca2d3a3 | 17151 | |
0963b4bd MS |
17152 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
17153 | version checking. */ | |
7ca2d3a3 | 17154 | |
905e0470 PM |
17155 | if (cu->language == language_fortran |
17156 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
17157 | { |
17158 | return DW_ORD_row_major; | |
17159 | } | |
17160 | ||
3a3440fb | 17161 | switch (cu->language_defn->array_ordering ()) |
7ca2d3a3 DL |
17162 | { |
17163 | case array_column_major: | |
17164 | return DW_ORD_col_major; | |
17165 | case array_row_major: | |
17166 | default: | |
17167 | return DW_ORD_row_major; | |
17168 | }; | |
17169 | } | |
17170 | ||
72019c9c | 17171 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 17172 | the DIE's type field. */ |
72019c9c | 17173 | |
f792889a | 17174 | static struct type * |
72019c9c GM |
17175 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
17176 | { | |
7e314c57 JK |
17177 | struct type *domain_type, *set_type; |
17178 | struct attribute *attr; | |
f792889a | 17179 | |
7e314c57 JK |
17180 | domain_type = die_type (die, cu); |
17181 | ||
17182 | /* The die_type call above may have already set the type for this DIE. */ | |
17183 | set_type = get_die_type (die, cu); | |
17184 | if (set_type) | |
17185 | return set_type; | |
17186 | ||
17187 | set_type = create_set_type (NULL, domain_type); | |
17188 | ||
17189 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb TT |
17190 | if (attr != nullptr && attr->form_is_unsigned ()) |
17191 | TYPE_LENGTH (set_type) = attr->as_unsigned (); | |
7e314c57 | 17192 | |
2b4424c3 TT |
17193 | maybe_set_alignment (cu, die, set_type); |
17194 | ||
f792889a | 17195 | return set_die_type (die, set_type, cu); |
72019c9c | 17196 | } |
7ca2d3a3 | 17197 | |
0971de02 TT |
17198 | /* A helper for read_common_block that creates a locexpr baton. |
17199 | SYM is the symbol which we are marking as computed. | |
17200 | COMMON_DIE is the DIE for the common block. | |
17201 | COMMON_LOC is the location expression attribute for the common | |
17202 | block itself. | |
17203 | MEMBER_LOC is the location expression attribute for the particular | |
17204 | member of the common block that we are processing. | |
17205 | CU is the CU from which the above come. */ | |
17206 | ||
17207 | static void | |
17208 | mark_common_block_symbol_computed (struct symbol *sym, | |
17209 | struct die_info *common_die, | |
17210 | struct attribute *common_loc, | |
17211 | struct attribute *member_loc, | |
17212 | struct dwarf2_cu *cu) | |
17213 | { | |
5e22e966 | 17214 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 17215 | struct objfile *objfile = per_objfile->objfile; |
0971de02 TT |
17216 | struct dwarf2_locexpr_baton *baton; |
17217 | gdb_byte *ptr; | |
17218 | unsigned int cu_off; | |
08feed99 | 17219 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
17220 | LONGEST offset = 0; |
17221 | ||
17222 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
17223 | gdb_assert (common_loc->form_is_block ()); |
17224 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 17225 | || member_loc->form_is_constant ()); |
0971de02 | 17226 | |
8d749320 | 17227 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 17228 | baton->per_objfile = per_objfile; |
0971de02 TT |
17229 | baton->per_cu = cu->per_cu; |
17230 | gdb_assert (baton->per_cu); | |
17231 | ||
17232 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
17233 | ||
cd6c91b4 | 17234 | if (member_loc->form_is_constant ()) |
0971de02 | 17235 | { |
0826b30a | 17236 | offset = member_loc->constant_value (0); |
0971de02 TT |
17237 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
17238 | } | |
17239 | else | |
9d2246fc | 17240 | baton->size += member_loc->as_block ()->size; |
0971de02 | 17241 | |
224c3ddb | 17242 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
17243 | baton->data = ptr; |
17244 | ||
17245 | *ptr++ = DW_OP_call4; | |
9c541725 | 17246 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
17247 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
17248 | ptr += 4; | |
17249 | ||
cd6c91b4 | 17250 | if (member_loc->form_is_constant ()) |
0971de02 TT |
17251 | { |
17252 | *ptr++ = DW_OP_addr; | |
17253 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
17254 | ptr += cu->header.addr_size; | |
17255 | } | |
17256 | else | |
17257 | { | |
17258 | /* We have to copy the data here, because DW_OP_call4 will only | |
17259 | use a DW_AT_location attribute. */ | |
9d2246fc TT |
17260 | struct dwarf_block *block = member_loc->as_block (); |
17261 | memcpy (ptr, block->data, block->size); | |
17262 | ptr += block->size; | |
0971de02 TT |
17263 | } |
17264 | ||
17265 | *ptr++ = DW_OP_plus; | |
17266 | gdb_assert (ptr - baton->data == baton->size); | |
17267 | ||
0971de02 | 17268 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 17269 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
17270 | } |
17271 | ||
4357ac6c TT |
17272 | /* Create appropriate locally-scoped variables for all the |
17273 | DW_TAG_common_block entries. Also create a struct common_block | |
17274 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 17275 | is used to separate the common blocks name namespace from regular |
4357ac6c | 17276 | variable names. */ |
c906108c SS |
17277 | |
17278 | static void | |
e7c27a73 | 17279 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17280 | { |
0971de02 TT |
17281 | struct attribute *attr; |
17282 | ||
17283 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 17284 | if (attr != nullptr) |
0971de02 TT |
17285 | { |
17286 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 17287 | if (attr->form_is_block ()) |
dda83cd7 | 17288 | { |
0971de02 | 17289 | /* Ok. */ |
dda83cd7 | 17290 | } |
cd6c91b4 | 17291 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 17292 | { |
0971de02 TT |
17293 | dwarf2_complex_location_expr_complaint (); |
17294 | attr = NULL; | |
dda83cd7 | 17295 | } |
0971de02 | 17296 | else |
dda83cd7 | 17297 | { |
0971de02 TT |
17298 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
17299 | "common block member"); | |
17300 | attr = NULL; | |
dda83cd7 | 17301 | } |
0971de02 TT |
17302 | } |
17303 | ||
639d11d3 | 17304 | if (die->child != NULL) |
c906108c | 17305 | { |
5e22e966 | 17306 | struct objfile *objfile = cu->per_objfile->objfile; |
4357ac6c TT |
17307 | struct die_info *child_die; |
17308 | size_t n_entries = 0, size; | |
17309 | struct common_block *common_block; | |
17310 | struct symbol *sym; | |
74ac6d43 | 17311 | |
4357ac6c TT |
17312 | for (child_die = die->child; |
17313 | child_die && child_die->tag; | |
436c571c | 17314 | child_die = child_die->sibling) |
4357ac6c TT |
17315 | ++n_entries; |
17316 | ||
17317 | size = (sizeof (struct common_block) | |
17318 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
17319 | common_block |
17320 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
17321 | size); | |
4357ac6c TT |
17322 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
17323 | common_block->n_entries = 0; | |
17324 | ||
17325 | for (child_die = die->child; | |
17326 | child_die && child_die->tag; | |
436c571c | 17327 | child_die = child_die->sibling) |
4357ac6c TT |
17328 | { |
17329 | /* Create the symbol in the DW_TAG_common_block block in the current | |
17330 | symbol scope. */ | |
e7c27a73 | 17331 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
17332 | if (sym != NULL) |
17333 | { | |
17334 | struct attribute *member_loc; | |
17335 | ||
17336 | common_block->contents[common_block->n_entries++] = sym; | |
17337 | ||
17338 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
17339 | cu); | |
17340 | if (member_loc) | |
17341 | { | |
17342 | /* GDB has handled this for a long time, but it is | |
17343 | not specified by DWARF. It seems to have been | |
17344 | emitted by gfortran at least as recently as: | |
17345 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 17346 | complaint (_("Variable in common block has " |
0971de02 | 17347 | "DW_AT_data_member_location " |
9d8780f0 SM |
17348 | "- DIE at %s [in module %s]"), |
17349 | sect_offset_str (child_die->sect_off), | |
518817b3 | 17350 | objfile_name (objfile)); |
0971de02 | 17351 | |
cd6c91b4 | 17352 | if (member_loc->form_is_section_offset ()) |
0971de02 | 17353 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 17354 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 17355 | || member_loc->form_is_block ()) |
0971de02 | 17356 | { |
435d3d88 | 17357 | if (attr != nullptr) |
0971de02 TT |
17358 | mark_common_block_symbol_computed (sym, die, attr, |
17359 | member_loc, cu); | |
17360 | } | |
17361 | else | |
17362 | dwarf2_complex_location_expr_complaint (); | |
17363 | } | |
17364 | } | |
c906108c | 17365 | } |
4357ac6c TT |
17366 | |
17367 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
17368 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
17369 | } |
17370 | } | |
17371 | ||
0114d602 | 17372 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 17373 | |
0114d602 DJ |
17374 | static struct type * |
17375 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 17376 | { |
5e22e966 | 17377 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17378 | const char *previous_prefix, *name; |
9219021c | 17379 | int is_anonymous; |
0114d602 DJ |
17380 | struct type *type; |
17381 | ||
17382 | /* For extensions, reuse the type of the original namespace. */ | |
17383 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
17384 | { | |
17385 | struct die_info *ext_die; | |
17386 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 17387 | |
0114d602 DJ |
17388 | ext_die = dwarf2_extension (die, &ext_cu); |
17389 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
17390 | |
17391 | /* EXT_CU may not be the same as CU. | |
02142a6c | 17392 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
17393 | return set_die_type (die, type, cu); |
17394 | } | |
9219021c | 17395 | |
e142c38c | 17396 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
17397 | |
17398 | /* Now build the name of the current namespace. */ | |
17399 | ||
0114d602 DJ |
17400 | previous_prefix = determine_prefix (die, cu); |
17401 | if (previous_prefix[0] != '\0') | |
17402 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 17403 | previous_prefix, name, 0, cu); |
0114d602 DJ |
17404 | |
17405 | /* Create the type. */ | |
19f392bc | 17406 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 17407 | |
60531b24 | 17408 | return set_die_type (die, type, cu); |
0114d602 DJ |
17409 | } |
17410 | ||
22cee43f | 17411 | /* Read a namespace scope. */ |
0114d602 DJ |
17412 | |
17413 | static void | |
17414 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
17415 | { | |
5e22e966 | 17416 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17417 | int is_anonymous; |
9219021c | 17418 | |
5c4e30ca DC |
17419 | /* Add a symbol associated to this if we haven't seen the namespace |
17420 | before. Also, add a using directive if it's an anonymous | |
17421 | namespace. */ | |
9219021c | 17422 | |
f2f0e013 | 17423 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
17424 | { |
17425 | struct type *type; | |
17426 | ||
0114d602 | 17427 | type = read_type_die (die, cu); |
e7c27a73 | 17428 | new_symbol (die, type, cu); |
5c4e30ca | 17429 | |
e8e80198 | 17430 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 17431 | if (is_anonymous) |
0114d602 DJ |
17432 | { |
17433 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 17434 | |
eb1e02fd | 17435 | std::vector<const char *> excludes; |
804d2729 | 17436 | add_using_directive (using_directives (cu), |
7d93a1e0 | 17437 | previous_prefix, type->name (), NULL, |
eb1e02fd | 17438 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 17439 | } |
5c4e30ca | 17440 | } |
9219021c | 17441 | |
639d11d3 | 17442 | if (die->child != NULL) |
d9fa45fe | 17443 | { |
639d11d3 | 17444 | struct die_info *child_die = die->child; |
6e70227d | 17445 | |
d9fa45fe DC |
17446 | while (child_die && child_die->tag) |
17447 | { | |
e7c27a73 | 17448 | process_die (child_die, cu); |
436c571c | 17449 | child_die = child_die->sibling; |
d9fa45fe DC |
17450 | } |
17451 | } | |
38d518c9 EZ |
17452 | } |
17453 | ||
f55ee35c JK |
17454 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
17455 | imported module. Still we need that type as local Fortran "use ... only" | |
17456 | declaration imports depend on the created type in determine_prefix. */ | |
17457 | ||
17458 | static struct type * | |
17459 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
17460 | { | |
5e22e966 | 17461 | struct objfile *objfile = cu->per_objfile->objfile; |
15d034d0 | 17462 | const char *module_name; |
f55ee35c JK |
17463 | struct type *type; |
17464 | ||
17465 | module_name = dwarf2_name (die, cu); | |
19f392bc | 17466 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 17467 | |
f55ee35c JK |
17468 | return set_die_type (die, type, cu); |
17469 | } | |
17470 | ||
5d7cb8df JK |
17471 | /* Read a Fortran module. */ |
17472 | ||
17473 | static void | |
17474 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
17475 | { | |
17476 | struct die_info *child_die = die->child; | |
530e8392 KB |
17477 | struct type *type; |
17478 | ||
17479 | type = read_type_die (die, cu); | |
17480 | new_symbol (die, type, cu); | |
5d7cb8df | 17481 | |
5d7cb8df JK |
17482 | while (child_die && child_die->tag) |
17483 | { | |
17484 | process_die (child_die, cu); | |
436c571c | 17485 | child_die = child_die->sibling; |
5d7cb8df JK |
17486 | } |
17487 | } | |
17488 | ||
38d518c9 EZ |
17489 | /* Return the name of the namespace represented by DIE. Set |
17490 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
17491 | namespace. */ | |
17492 | ||
17493 | static const char * | |
e142c38c | 17494 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
17495 | { |
17496 | struct die_info *current_die; | |
17497 | const char *name = NULL; | |
17498 | ||
17499 | /* Loop through the extensions until we find a name. */ | |
17500 | ||
17501 | for (current_die = die; | |
17502 | current_die != NULL; | |
f2f0e013 | 17503 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 17504 | { |
96553a0c DE |
17505 | /* We don't use dwarf2_name here so that we can detect the absence |
17506 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 17507 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 17508 | |
38d518c9 EZ |
17509 | if (name != NULL) |
17510 | break; | |
17511 | } | |
17512 | ||
17513 | /* Is it an anonymous namespace? */ | |
17514 | ||
17515 | *is_anonymous = (name == NULL); | |
17516 | if (*is_anonymous) | |
2b1dbab0 | 17517 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
17518 | |
17519 | return name; | |
d9fa45fe DC |
17520 | } |
17521 | ||
c906108c SS |
17522 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
17523 | the user defined type vector. */ | |
17524 | ||
f792889a | 17525 | static struct type * |
e7c27a73 | 17526 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17527 | { |
5e22e966 | 17528 | struct gdbarch *gdbarch = cu->per_objfile->objfile->arch (); |
e7c27a73 | 17529 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 17530 | struct type *type; |
8b2dbe47 KB |
17531 | struct attribute *attr_byte_size; |
17532 | struct attribute *attr_address_class; | |
17533 | int byte_size, addr_class; | |
7e314c57 JK |
17534 | struct type *target_type; |
17535 | ||
17536 | target_type = die_type (die, cu); | |
c906108c | 17537 | |
7e314c57 JK |
17538 | /* The die_type call above may have already set the type for this DIE. */ |
17539 | type = get_die_type (die, cu); | |
17540 | if (type) | |
17541 | return type; | |
17542 | ||
17543 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17544 | |
e142c38c | 17545 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 | 17546 | if (attr_byte_size) |
529908cb | 17547 | byte_size = attr_byte_size->constant_value (cu_header->addr_size); |
c906108c | 17548 | else |
8b2dbe47 KB |
17549 | byte_size = cu_header->addr_size; |
17550 | ||
e142c38c | 17551 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 | 17552 | if (attr_address_class) |
529908cb | 17553 | addr_class = attr_address_class->constant_value (DW_ADDR_none); |
8b2dbe47 KB |
17554 | else |
17555 | addr_class = DW_ADDR_none; | |
17556 | ||
2b4424c3 TT |
17557 | ULONGEST alignment = get_alignment (cu, die); |
17558 | ||
17559 | /* If the pointer size, alignment, or address class is different | |
17560 | than the default, create a type variant marked as such and set | |
17561 | the length accordingly. */ | |
17562 | if (TYPE_LENGTH (type) != byte_size | |
17563 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17564 | && alignment != TYPE_RAW_ALIGN (type)) | |
17565 | || addr_class != DW_ADDR_none) | |
c906108c | 17566 | { |
5e2b427d | 17567 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 | 17568 | { |
314ad88d PA |
17569 | type_instance_flags type_flags |
17570 | = gdbarch_address_class_type_flags (gdbarch, byte_size, | |
17571 | addr_class); | |
876cecd0 TT |
17572 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17573 | == 0); | |
8b2dbe47 KB |
17574 | type = make_type_with_address_space (type, type_flags); |
17575 | } | |
17576 | else if (TYPE_LENGTH (type) != byte_size) | |
17577 | { | |
b98664d3 | 17578 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17579 | } |
2b4424c3 TT |
17580 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17581 | { | |
b98664d3 | 17582 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17583 | " - DIE at %s [in module %s]"), |
17584 | sect_offset_str (die->sect_off), | |
5e22e966 | 17585 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 17586 | } |
6e70227d | 17587 | else |
9a619af0 MS |
17588 | { |
17589 | /* Should we also complain about unhandled address classes? */ | |
17590 | } | |
c906108c | 17591 | } |
8b2dbe47 KB |
17592 | |
17593 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17594 | set_type_align (type, alignment); |
f792889a | 17595 | return set_die_type (die, type, cu); |
c906108c SS |
17596 | } |
17597 | ||
17598 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17599 | the user defined type vector. */ | |
17600 | ||
f792889a | 17601 | static struct type * |
e7c27a73 | 17602 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17603 | { |
17604 | struct type *type; | |
17605 | struct type *to_type; | |
17606 | struct type *domain; | |
17607 | ||
e7c27a73 DJ |
17608 | to_type = die_type (die, cu); |
17609 | domain = die_containing_type (die, cu); | |
0d5de010 | 17610 | |
7e314c57 JK |
17611 | /* The calls above may have already set the type for this DIE. */ |
17612 | type = get_die_type (die, cu); | |
17613 | if (type) | |
17614 | return type; | |
17615 | ||
78134374 | 17616 | if (check_typedef (to_type)->code () == TYPE_CODE_METHOD) |
0d5de010 | 17617 | type = lookup_methodptr_type (to_type); |
78134374 | 17618 | else if (check_typedef (to_type)->code () == TYPE_CODE_FUNC) |
7078baeb | 17619 | { |
5e22e966 | 17620 | struct type *new_type = alloc_type (cu->per_objfile->objfile); |
7078baeb TT |
17621 | |
17622 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
80fc5e77 | 17623 | to_type->fields (), to_type->num_fields (), |
a409645d | 17624 | to_type->has_varargs ()); |
7078baeb TT |
17625 | type = lookup_methodptr_type (new_type); |
17626 | } | |
0d5de010 DJ |
17627 | else |
17628 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17629 | |
f792889a | 17630 | return set_die_type (die, type, cu); |
c906108c SS |
17631 | } |
17632 | ||
4297a3f0 | 17633 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17634 | the user defined type vector. */ |
17635 | ||
f792889a | 17636 | static struct type * |
4297a3f0 | 17637 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
dda83cd7 | 17638 | enum type_code refcode) |
c906108c | 17639 | { |
e7c27a73 | 17640 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17641 | struct type *type, *target_type; |
c906108c SS |
17642 | struct attribute *attr; |
17643 | ||
4297a3f0 AV |
17644 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17645 | ||
7e314c57 JK |
17646 | target_type = die_type (die, cu); |
17647 | ||
17648 | /* The die_type call above may have already set the type for this DIE. */ | |
17649 | type = get_die_type (die, cu); | |
17650 | if (type) | |
17651 | return type; | |
17652 | ||
4297a3f0 | 17653 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17654 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17655 | if (attr != nullptr) |
c906108c | 17656 | { |
529908cb | 17657 | TYPE_LENGTH (type) = attr->constant_value (cu_header->addr_size); |
c906108c SS |
17658 | } |
17659 | else | |
17660 | { | |
107d2387 | 17661 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17662 | } |
2b4424c3 | 17663 | maybe_set_alignment (cu, die, type); |
f792889a | 17664 | return set_die_type (die, type, cu); |
c906108c SS |
17665 | } |
17666 | ||
cf363f18 MW |
17667 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17668 | outputs DWARF type qualifiers that apply to an array, not the | |
17669 | element type. But GDB relies on the array element type to carry | |
17670 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17671 | specification. */ | |
17672 | ||
17673 | static struct type * | |
17674 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17675 | struct type *base_type, int cnst, int voltl) | |
17676 | { | |
17677 | struct type *el_type, *inner_array; | |
17678 | ||
17679 | base_type = copy_type (base_type); | |
17680 | inner_array = base_type; | |
17681 | ||
78134374 | 17682 | while (TYPE_TARGET_TYPE (inner_array)->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17683 | { |
17684 | TYPE_TARGET_TYPE (inner_array) = | |
17685 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17686 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17687 | } | |
17688 | ||
17689 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17690 | cnst |= TYPE_CONST (el_type); | |
17691 | voltl |= TYPE_VOLATILE (el_type); | |
17692 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17693 | ||
17694 | return set_die_type (die, base_type, cu); | |
17695 | } | |
17696 | ||
f792889a | 17697 | static struct type * |
e7c27a73 | 17698 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17699 | { |
f792889a | 17700 | struct type *base_type, *cv_type; |
c906108c | 17701 | |
e7c27a73 | 17702 | base_type = die_type (die, cu); |
7e314c57 JK |
17703 | |
17704 | /* The die_type call above may have already set the type for this DIE. */ | |
17705 | cv_type = get_die_type (die, cu); | |
17706 | if (cv_type) | |
17707 | return cv_type; | |
17708 | ||
2f608a3a KW |
17709 | /* In case the const qualifier is applied to an array type, the element type |
17710 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
78134374 | 17711 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 | 17712 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17713 | |
f792889a DJ |
17714 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17715 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17716 | } |
17717 | ||
f792889a | 17718 | static struct type * |
e7c27a73 | 17719 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17720 | { |
f792889a | 17721 | struct type *base_type, *cv_type; |
c906108c | 17722 | |
e7c27a73 | 17723 | base_type = die_type (die, cu); |
7e314c57 JK |
17724 | |
17725 | /* The die_type call above may have already set the type for this DIE. */ | |
17726 | cv_type = get_die_type (die, cu); | |
17727 | if (cv_type) | |
17728 | return cv_type; | |
17729 | ||
cf363f18 MW |
17730 | /* In case the volatile qualifier is applied to an array type, the |
17731 | element type is so qualified, not the array type (section 6.7.3 | |
17732 | of C99). */ | |
78134374 | 17733 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17734 | return add_array_cv_type (die, cu, base_type, 0, 1); |
17735 | ||
f792889a DJ |
17736 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17737 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17738 | } |
17739 | ||
06d66ee9 TT |
17740 | /* Handle DW_TAG_restrict_type. */ |
17741 | ||
17742 | static struct type * | |
17743 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17744 | { | |
17745 | struct type *base_type, *cv_type; | |
17746 | ||
17747 | base_type = die_type (die, cu); | |
17748 | ||
17749 | /* The die_type call above may have already set the type for this DIE. */ | |
17750 | cv_type = get_die_type (die, cu); | |
17751 | if (cv_type) | |
17752 | return cv_type; | |
17753 | ||
17754 | cv_type = make_restrict_type (base_type); | |
17755 | return set_die_type (die, cv_type, cu); | |
17756 | } | |
17757 | ||
a2c2acaf MW |
17758 | /* Handle DW_TAG_atomic_type. */ |
17759 | ||
17760 | static struct type * | |
17761 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17762 | { | |
17763 | struct type *base_type, *cv_type; | |
17764 | ||
17765 | base_type = die_type (die, cu); | |
17766 | ||
17767 | /* The die_type call above may have already set the type for this DIE. */ | |
17768 | cv_type = get_die_type (die, cu); | |
17769 | if (cv_type) | |
17770 | return cv_type; | |
17771 | ||
17772 | cv_type = make_atomic_type (base_type); | |
17773 | return set_die_type (die, cv_type, cu); | |
17774 | } | |
17775 | ||
c906108c SS |
17776 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17777 | the user defined type vector. It isn't really a user defined type, | |
17778 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17779 | attribute to reference it. */ | |
17780 | ||
f792889a | 17781 | static struct type * |
e7c27a73 | 17782 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17783 | { |
5e22e966 | 17784 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 17785 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
17786 | struct type *type, *range_type, *index_type, *char_type; |
17787 | struct attribute *attr; | |
216a7e6b AB |
17788 | struct dynamic_prop prop; |
17789 | bool length_is_constant = true; | |
17790 | LONGEST length; | |
17791 | ||
17792 | /* There are a couple of places where bit sizes might be made use of | |
17793 | when parsing a DW_TAG_string_type, however, no producer that we know | |
17794 | of make use of these. Handling bit sizes that are a multiple of the | |
17795 | byte size is easy enough, but what about other bit sizes? Lets deal | |
17796 | with that problem when we have to. Warn about these attributes being | |
17797 | unsupported, then parse the type and ignore them like we always | |
17798 | have. */ | |
17799 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
17800 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
17801 | { | |
17802 | static bool warning_printed = false; | |
17803 | if (!warning_printed) | |
17804 | { | |
17805 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
17806 | "currently supported on DW_TAG_string_type.")); | |
17807 | warning_printed = true; | |
17808 | } | |
17809 | } | |
c906108c | 17810 | |
e142c38c | 17811 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 17812 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
17813 | { |
17814 | /* The string length describes the location at which the length of | |
17815 | the string can be found. The size of the length field can be | |
17816 | specified with one of the attributes below. */ | |
17817 | struct type *prop_type; | |
17818 | struct attribute *len | |
17819 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
17820 | if (len == nullptr) | |
17821 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 17822 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
17823 | { |
17824 | /* Pass 0 as the default as we know this attribute is constant | |
17825 | and the default value will not be returned. */ | |
0826b30a | 17826 | LONGEST sz = len->constant_value (0); |
293e7e51 | 17827 | prop_type = cu->per_objfile->int_type (sz, true); |
216a7e6b AB |
17828 | } |
17829 | else | |
17830 | { | |
17831 | /* If the size is not specified then we assume it is the size of | |
17832 | an address on this target. */ | |
293e7e51 | 17833 | prop_type = cu->addr_sized_int_type (true); |
216a7e6b AB |
17834 | } |
17835 | ||
17836 | /* Convert the attribute into a dynamic property. */ | |
17837 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17838 | length = 1; | |
17839 | else | |
17840 | length_is_constant = false; | |
17841 | } | |
17842 | else if (attr != nullptr) | |
17843 | { | |
17844 | /* This DW_AT_string_length just contains the length with no | |
17845 | indirection. There's no need to create a dynamic property in this | |
17846 | case. Pass 0 for the default value as we know it will not be | |
17847 | returned in this case. */ | |
0826b30a | 17848 | length = attr->constant_value (0); |
216a7e6b AB |
17849 | } |
17850 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17851 | { |
216a7e6b | 17852 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 17853 | length = attr->constant_value (1); |
c906108c SS |
17854 | } |
17855 | else | |
17856 | { | |
216a7e6b AB |
17857 | /* Use 1 as a fallback length if we have nothing else. */ |
17858 | length = 1; | |
c906108c | 17859 | } |
6ccb9162 | 17860 | |
46bf5051 | 17861 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
17862 | if (length_is_constant) |
17863 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17864 | else | |
17865 | { | |
17866 | struct dynamic_prop low_bound; | |
17867 | ||
8c2e4e06 | 17868 | low_bound.set_const_val (1); |
216a7e6b AB |
17869 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); |
17870 | } | |
3b7538c0 UW |
17871 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17872 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17873 | |
f792889a | 17874 | return set_die_type (die, type, cu); |
c906108c SS |
17875 | } |
17876 | ||
4d804846 JB |
17877 | /* Assuming that DIE corresponds to a function, returns nonzero |
17878 | if the function is prototyped. */ | |
17879 | ||
17880 | static int | |
17881 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17882 | { | |
17883 | struct attribute *attr; | |
17884 | ||
17885 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
c45bc3f8 | 17886 | if (attr && attr->as_boolean ()) |
4d804846 JB |
17887 | return 1; |
17888 | ||
17889 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17890 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17891 | languages that allow unprototyped functions (Eg: Objective C). |
17892 | For all other languages, assume that functions are always | |
17893 | prototyped. */ | |
17894 | if (cu->language != language_c | |
17895 | && cu->language != language_objc | |
17896 | && cu->language != language_opencl) | |
17897 | return 1; | |
17898 | ||
17899 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17900 | prototyped and unprototyped functions; default to prototyped, | |
17901 | since that is more common in modern code (and RealView warns | |
17902 | about unprototyped functions). */ | |
17903 | if (producer_is_realview (cu->producer)) | |
17904 | return 1; | |
17905 | ||
17906 | return 0; | |
17907 | } | |
17908 | ||
c906108c SS |
17909 | /* Handle DIES due to C code like: |
17910 | ||
17911 | struct foo | |
c5aa993b JM |
17912 | { |
17913 | int (*funcp)(int a, long l); | |
17914 | int b; | |
17915 | }; | |
c906108c | 17916 | |
0963b4bd | 17917 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17918 | |
f792889a | 17919 | static struct type * |
e7c27a73 | 17920 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17921 | { |
5e22e966 | 17922 | struct objfile *objfile = cu->per_objfile->objfile; |
0963b4bd MS |
17923 | struct type *type; /* Type that this function returns. */ |
17924 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17925 | struct attribute *attr; |
17926 | ||
e7c27a73 | 17927 | type = die_type (die, cu); |
7e314c57 JK |
17928 | |
17929 | /* The die_type call above may have already set the type for this DIE. */ | |
17930 | ftype = get_die_type (die, cu); | |
17931 | if (ftype) | |
17932 | return ftype; | |
17933 | ||
0c8b41f1 | 17934 | ftype = lookup_function_type (type); |
c906108c | 17935 | |
4d804846 | 17936 | if (prototyped_function_p (die, cu)) |
27e69b7a | 17937 | ftype->set_is_prototyped (true); |
c906108c | 17938 | |
c055b101 CV |
17939 | /* Store the calling convention in the type if it's available in |
17940 | the subroutine die. Otherwise set the calling convention to | |
17941 | the default value DW_CC_normal. */ | |
17942 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf | 17943 | if (attr != nullptr |
529908cb | 17944 | && is_valid_DW_AT_calling_convention_for_subroutine (attr->constant_value (0))) |
d0922fcf | 17945 | TYPE_CALLING_CONVENTION (ftype) |
529908cb | 17946 | = (enum dwarf_calling_convention) attr->constant_value (0); |
54fcddd0 UW |
17947 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
17948 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17949 | else | |
17950 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17951 | |
743649fd MW |
17952 | /* Record whether the function returns normally to its caller or not |
17953 | if the DWARF producer set that information. */ | |
17954 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
c45bc3f8 | 17955 | if (attr && attr->as_boolean ()) |
743649fd MW |
17956 | TYPE_NO_RETURN (ftype) = 1; |
17957 | ||
76c10ea2 GM |
17958 | /* We need to add the subroutine type to the die immediately so |
17959 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17960 | declared as the same subroutine type. */ |
76c10ea2 | 17961 | set_die_type (die, ftype, cu); |
6e70227d | 17962 | |
639d11d3 | 17963 | if (die->child != NULL) |
c906108c | 17964 | { |
bb5ed363 | 17965 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17966 | struct die_info *child_die; |
8072405b | 17967 | int nparams, iparams; |
c906108c SS |
17968 | |
17969 | /* Count the number of parameters. | |
dda83cd7 SM |
17970 | FIXME: GDB currently ignores vararg functions, but knows about |
17971 | vararg member functions. */ | |
8072405b | 17972 | nparams = 0; |
639d11d3 | 17973 | child_die = die->child; |
c906108c SS |
17974 | while (child_die && child_die->tag) |
17975 | { | |
17976 | if (child_die->tag == DW_TAG_formal_parameter) | |
17977 | nparams++; | |
17978 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
1d6286ed SM |
17979 | ftype->set_has_varargs (true); |
17980 | ||
436c571c | 17981 | child_die = child_die->sibling; |
c906108c SS |
17982 | } |
17983 | ||
17984 | /* Allocate storage for parameters and fill them in. */ | |
5e33d5f4 | 17985 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
17986 | ftype->set_fields |
17987 | ((struct field *) TYPE_ZALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 17988 | |
8072405b JK |
17989 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17990 | even if we error out during the parameters reading below. */ | |
17991 | for (iparams = 0; iparams < nparams; iparams++) | |
5d14b6e5 | 17992 | ftype->field (iparams).set_type (void_type); |
8072405b JK |
17993 | |
17994 | iparams = 0; | |
639d11d3 | 17995 | child_die = die->child; |
c906108c SS |
17996 | while (child_die && child_die->tag) |
17997 | { | |
17998 | if (child_die->tag == DW_TAG_formal_parameter) | |
17999 | { | |
3ce3b1ba PA |
18000 | struct type *arg_type; |
18001 | ||
18002 | /* DWARF version 2 has no clean way to discern C++ | |
18003 | static and non-static member functions. G++ helps | |
18004 | GDB by marking the first parameter for non-static | |
18005 | member functions (which is the this pointer) as | |
18006 | artificial. We pass this information to | |
18007 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
18008 | ||
18009 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
18010 | 4.5 does not yet generate. */ | |
e142c38c | 18011 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 18012 | if (attr != nullptr) |
c45bc3f8 | 18013 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = attr->as_boolean (); |
c906108c | 18014 | else |
9c37b5ae | 18015 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
18016 | arg_type = die_type (child_die, cu); |
18017 | ||
18018 | /* RealView does not mark THIS as const, which the testsuite | |
18019 | expects. GCC marks THIS as const in method definitions, | |
18020 | but not in the class specifications (GCC PR 43053). */ | |
18021 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
18022 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
18023 | { | |
18024 | int is_this = 0; | |
18025 | struct dwarf2_cu *arg_cu = cu; | |
18026 | const char *name = dwarf2_name (child_die, cu); | |
18027 | ||
18028 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 18029 | if (attr != nullptr) |
3ce3b1ba PA |
18030 | { |
18031 | /* If the compiler emits this, use it. */ | |
18032 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
18033 | is_this = 1; | |
18034 | } | |
18035 | else if (name && strcmp (name, "this") == 0) | |
18036 | /* Function definitions will have the argument names. */ | |
18037 | is_this = 1; | |
18038 | else if (name == NULL && iparams == 0) | |
18039 | /* Declarations may not have the names, so like | |
18040 | elsewhere in GDB, assume an artificial first | |
18041 | argument is "this". */ | |
18042 | is_this = 1; | |
18043 | ||
18044 | if (is_this) | |
18045 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
18046 | arg_type, 0); | |
18047 | } | |
18048 | ||
5d14b6e5 | 18049 | ftype->field (iparams).set_type (arg_type); |
c906108c SS |
18050 | iparams++; |
18051 | } | |
436c571c | 18052 | child_die = child_die->sibling; |
c906108c SS |
18053 | } |
18054 | } | |
18055 | ||
76c10ea2 | 18056 | return ftype; |
c906108c SS |
18057 | } |
18058 | ||
f792889a | 18059 | static struct type * |
e7c27a73 | 18060 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18061 | { |
5e22e966 | 18062 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 18063 | const char *name = NULL; |
3c8e0968 | 18064 | struct type *this_type, *target_type; |
c906108c | 18065 | |
94af9270 | 18066 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc | 18067 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
8f53807e | 18068 | this_type->set_target_is_stub (true); |
f792889a | 18069 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
18070 | target_type = die_type (die, cu); |
18071 | if (target_type != this_type) | |
18072 | TYPE_TARGET_TYPE (this_type) = target_type; | |
18073 | else | |
18074 | { | |
18075 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
18076 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 18077 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
18078 | "- DIE at %s [in module %s]"), |
18079 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
18080 | TYPE_TARGET_TYPE (this_type) = NULL; |
18081 | } | |
e4003a34 TV |
18082 | if (name == NULL) |
18083 | { | |
18084 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
18085 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
18086 | Handle these by just returning the target type, rather than | |
18087 | constructing an anonymous typedef type and trying to handle this | |
18088 | elsewhere. */ | |
18089 | set_die_type (die, target_type, cu); | |
18090 | return target_type; | |
18091 | } | |
f792889a | 18092 | return this_type; |
c906108c SS |
18093 | } |
18094 | ||
09584414 JB |
18095 | /* Assuming DIE is a rational DW_TAG_constant, read the DIE's |
18096 | numerator and denominator into NUMERATOR and DENOMINATOR (resp). | |
18097 | ||
18098 | If the numerator and/or numerator attribute is missing, | |
18099 | a complaint is filed, and NUMERATOR and DENOMINATOR are left | |
18100 | untouched. */ | |
18101 | ||
18102 | static void | |
18103 | get_dwarf2_rational_constant (struct die_info *die, struct dwarf2_cu *cu, | |
18104 | LONGEST *numerator, LONGEST *denominator) | |
18105 | { | |
18106 | struct attribute *num_attr, *denom_attr; | |
18107 | ||
18108 | num_attr = dwarf2_attr (die, DW_AT_GNU_numerator, cu); | |
18109 | if (num_attr == nullptr) | |
18110 | complaint (_("DW_AT_GNU_numerator missing in %s DIE at %s"), | |
18111 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18112 | ||
18113 | denom_attr = dwarf2_attr (die, DW_AT_GNU_denominator, cu); | |
18114 | if (denom_attr == nullptr) | |
18115 | complaint (_("DW_AT_GNU_denominator missing in %s DIE at %s"), | |
18116 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18117 | ||
18118 | if (num_attr == nullptr || denom_attr == nullptr) | |
18119 | return; | |
18120 | ||
18121 | *numerator = num_attr->constant_value (1); | |
18122 | *denominator = denom_attr->constant_value (1); | |
18123 | } | |
18124 | ||
18125 | /* Same as get_dwarf2_rational_constant, but extracting an unsigned | |
18126 | rational constant, rather than a signed one. | |
18127 | ||
18128 | If the rational constant has a negative value, a complaint | |
18129 | is filed, and NUMERATOR and DENOMINATOR are left untouched. */ | |
18130 | ||
18131 | static void | |
18132 | get_dwarf2_unsigned_rational_constant (struct die_info *die, | |
18133 | struct dwarf2_cu *cu, | |
18134 | ULONGEST *numerator, | |
18135 | ULONGEST *denominator) | |
18136 | { | |
18137 | LONGEST num = 1, denom = 1; | |
18138 | ||
18139 | get_dwarf2_rational_constant (die, cu, &num, &denom); | |
18140 | if (num < 0 && denom < 0) | |
18141 | { | |
18142 | num = -num; | |
18143 | denom = -denom; | |
18144 | } | |
18145 | else if (num < 0) | |
18146 | { | |
18147 | complaint (_("unexpected negative value for DW_AT_GNU_numerator" | |
18148 | " in DIE at %s"), | |
18149 | sect_offset_str (die->sect_off)); | |
18150 | return; | |
18151 | } | |
18152 | else if (denom < 0) | |
18153 | { | |
18154 | complaint (_("unexpected negative value for DW_AT_GNU_denominator" | |
18155 | " in DIE at %s"), | |
18156 | sect_offset_str (die->sect_off)); | |
18157 | return; | |
18158 | } | |
18159 | ||
18160 | *numerator = num; | |
18161 | *denominator = denom; | |
18162 | } | |
18163 | ||
18164 | /* Assuming DIE corresponds to a fixed point type, finish the creation | |
2a12c336 | 18165 | of the corresponding TYPE by setting its type-specific data. |
09584414 JB |
18166 | CU is the DIE's CU. */ |
18167 | ||
18168 | static void | |
18169 | finish_fixed_point_type (struct type *type, struct die_info *die, | |
18170 | struct dwarf2_cu *cu) | |
18171 | { | |
18172 | struct attribute *attr; | |
18173 | /* Numerator and denominator of our fixed-point type's scaling factor. | |
18174 | The default is a scaling factor of 1, which we use as a fallback | |
18175 | when we are not able to decode it (problem with the debugging info, | |
18176 | unsupported forms, bug in GDB, etc...). Using that as the default | |
18177 | allows us to at least print the unscaled value, which might still | |
18178 | be useful to a user. */ | |
18179 | ULONGEST scale_num = 1; | |
18180 | ULONGEST scale_denom = 1; | |
18181 | ||
18182 | gdb_assert (type->code () == TYPE_CODE_FIXED_POINT | |
18183 | && TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FIXED_POINT); | |
18184 | ||
18185 | attr = dwarf2_attr (die, DW_AT_binary_scale, cu); | |
18186 | if (!attr) | |
18187 | attr = dwarf2_attr (die, DW_AT_decimal_scale, cu); | |
18188 | if (!attr) | |
18189 | attr = dwarf2_attr (die, DW_AT_small, cu); | |
18190 | ||
18191 | if (attr == nullptr) | |
18192 | { | |
18193 | /* Scaling factor not found. Assume a scaling factor of 1, | |
18194 | and hope for the best. At least the user will be able to see | |
18195 | the encoded value. */ | |
18196 | complaint (_("no scale found for fixed-point type (DIE at %s)"), | |
18197 | sect_offset_str (die->sect_off)); | |
18198 | } | |
18199 | else if (attr->name == DW_AT_binary_scale) | |
18200 | { | |
18201 | LONGEST scale_exp = attr->constant_value (0); | |
18202 | ULONGEST *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; | |
18203 | ||
a43b29c9 | 18204 | *num_or_denom = 1 << std::abs (scale_exp); |
09584414 JB |
18205 | } |
18206 | else if (attr->name == DW_AT_decimal_scale) | |
18207 | { | |
18208 | LONGEST scale_exp = attr->constant_value (0); | |
18209 | ULONGEST *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; | |
18210 | ||
a43b29c9 | 18211 | *num_or_denom = uinteger_pow (10, std::abs (scale_exp)); |
09584414 JB |
18212 | } |
18213 | else if (attr->name == DW_AT_small) | |
18214 | { | |
18215 | struct die_info *scale_die; | |
18216 | struct dwarf2_cu *scale_cu = cu; | |
18217 | ||
18218 | scale_die = follow_die_ref (die, attr, &scale_cu); | |
18219 | if (scale_die->tag == DW_TAG_constant) | |
18220 | get_dwarf2_unsigned_rational_constant (scale_die, scale_cu, | |
18221 | &scale_num, &scale_denom); | |
18222 | else | |
18223 | complaint (_("%s DIE not supported as target of DW_AT_small attribute" | |
18224 | " (DIE at %s)"), | |
18225 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18226 | } | |
18227 | else | |
18228 | { | |
18229 | complaint (_("unsupported scale attribute %s for fixed-point type" | |
18230 | " (DIE at %s)"), | |
18231 | dwarf_attr_name (attr->name), | |
18232 | sect_offset_str (die->sect_off)); | |
18233 | } | |
18234 | ||
2a12c336 | 18235 | gdb_mpq &scaling_factor = type->fixed_point_info ().scaling_factor; |
09584414 JB |
18236 | |
18237 | gdb_mpz tmp_z (scale_num); | |
18238 | mpz_set (mpq_numref (scaling_factor.val), tmp_z.val); | |
18239 | ||
18240 | tmp_z = scale_denom; | |
18241 | mpz_set (mpq_denref (scaling_factor.val), tmp_z.val); | |
18242 | ||
18243 | mpq_canonicalize (scaling_factor.val); | |
18244 | } | |
18245 | ||
9b790ce7 UW |
18246 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
18247 | (which may be different from NAME) to the architecture back-end to allow | |
18248 | it to guess the correct format if necessary. */ | |
18249 | ||
18250 | static struct type * | |
18251 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 18252 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 18253 | { |
08feed99 | 18254 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
18255 | const struct floatformat **format; |
18256 | struct type *type; | |
18257 | ||
18258 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
18259 | if (format) | |
103a685e | 18260 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 18261 | else |
77b7c781 | 18262 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
18263 | |
18264 | return type; | |
18265 | } | |
18266 | ||
eb77c9df AB |
18267 | /* Allocate an integer type of size BITS and name NAME. */ |
18268 | ||
18269 | static struct type * | |
18270 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
18271 | int bits, int unsigned_p, const char *name) | |
18272 | { | |
18273 | struct type *type; | |
18274 | ||
18275 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
18276 | instead of using DW_TAG_unspecified_type. This has been seen on | |
18277 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
18278 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
18279 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
18280 | type = objfile_type (objfile)->builtin_void; |
18281 | else | |
18282 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
18283 | ||
18284 | return type; | |
18285 | } | |
18286 | ||
09584414 JB |
18287 | /* Return true if DIE has a DW_AT_small attribute whose value is |
18288 | a constant rational, where both the numerator and denominator | |
18289 | are equal to zero. | |
18290 | ||
18291 | CU is the DIE's Compilation Unit. */ | |
18292 | ||
18293 | static bool | |
18294 | has_zero_over_zero_small_attribute (struct die_info *die, | |
18295 | struct dwarf2_cu *cu) | |
18296 | { | |
18297 | struct attribute *attr = dwarf2_attr (die, DW_AT_small, cu); | |
18298 | if (attr == nullptr) | |
18299 | return false; | |
18300 | ||
18301 | struct dwarf2_cu *scale_cu = cu; | |
18302 | struct die_info *scale_die | |
18303 | = follow_die_ref (die, attr, &scale_cu); | |
18304 | ||
18305 | if (scale_die->tag != DW_TAG_constant) | |
18306 | return false; | |
18307 | ||
18308 | LONGEST num = 1, denom = 1; | |
18309 | get_dwarf2_rational_constant (scale_die, cu, &num, &denom); | |
18310 | return (num == 0 && denom == 0); | |
18311 | } | |
18312 | ||
8bdc1658 AB |
18313 | /* Initialise and return a floating point type of size BITS suitable for |
18314 | use as a component of a complex number. The NAME_HINT is passed through | |
18315 | when initialising the floating point type and is the name of the complex | |
18316 | type. | |
18317 | ||
18318 | As DWARF doesn't currently provide an explicit name for the components | |
18319 | of a complex number, but it can be helpful to have these components | |
18320 | named, we try to select a suitable name based on the size of the | |
18321 | component. */ | |
18322 | static struct type * | |
18323 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
18324 | struct objfile *objfile, | |
103a685e TT |
18325 | int bits, const char *name_hint, |
18326 | enum bfd_endian byte_order) | |
8bdc1658 | 18327 | { |
08feed99 | 18328 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
18329 | struct type *tt = nullptr; |
18330 | ||
35add35e AB |
18331 | /* Try to find a suitable floating point builtin type of size BITS. |
18332 | We're going to use the name of this type as the name for the complex | |
18333 | target type that we are about to create. */ | |
1db455a7 | 18334 | switch (cu->language) |
8bdc1658 | 18335 | { |
1db455a7 AB |
18336 | case language_fortran: |
18337 | switch (bits) | |
18338 | { | |
18339 | case 32: | |
18340 | tt = builtin_f_type (gdbarch)->builtin_real; | |
18341 | break; | |
18342 | case 64: | |
18343 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
18344 | break; | |
18345 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18346 | case 128: | |
18347 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
18348 | break; | |
18349 | } | |
8bdc1658 | 18350 | break; |
1db455a7 AB |
18351 | default: |
18352 | switch (bits) | |
18353 | { | |
18354 | case 32: | |
18355 | tt = builtin_type (gdbarch)->builtin_float; | |
18356 | break; | |
18357 | case 64: | |
18358 | tt = builtin_type (gdbarch)->builtin_double; | |
18359 | break; | |
18360 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18361 | case 128: | |
18362 | tt = builtin_type (gdbarch)->builtin_long_double; | |
18363 | break; | |
18364 | } | |
8bdc1658 AB |
18365 | break; |
18366 | } | |
18367 | ||
35add35e AB |
18368 | /* If the type we found doesn't match the size we were looking for, then |
18369 | pretend we didn't find a type at all, the complex target type we | |
18370 | create will then be nameless. */ | |
a12e5744 | 18371 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
18372 | tt = nullptr; |
18373 | ||
7d93a1e0 | 18374 | const char *name = (tt == nullptr) ? nullptr : tt->name (); |
103a685e | 18375 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
18376 | } |
18377 | ||
c906108c SS |
18378 | /* Find a representation of a given base type and install |
18379 | it in the TYPE field of the die. */ | |
18380 | ||
f792889a | 18381 | static struct type * |
e7c27a73 | 18382 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18383 | { |
5e22e966 | 18384 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
18385 | struct type *type; |
18386 | struct attribute *attr; | |
19f392bc | 18387 | int encoding = 0, bits = 0; |
15d034d0 | 18388 | const char *name; |
34877895 | 18389 | gdbarch *arch; |
c906108c | 18390 | |
e142c38c | 18391 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
529908cb TT |
18392 | if (attr != nullptr && attr->form_is_constant ()) |
18393 | encoding = attr->constant_value (0); | |
e142c38c | 18394 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 18395 | if (attr != nullptr) |
529908cb | 18396 | bits = attr->constant_value (0) * TARGET_CHAR_BIT; |
39cbfefa | 18397 | name = dwarf2_name (die, cu); |
6ccb9162 | 18398 | if (!name) |
34877895 | 18399 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 18400 | |
08feed99 | 18401 | arch = objfile->arch (); |
103a685e TT |
18402 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
18403 | ||
34877895 | 18404 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
529908cb | 18405 | if (attr != nullptr && attr->form_is_constant ()) |
103a685e | 18406 | { |
529908cb | 18407 | int endianity = attr->constant_value (0); |
103a685e TT |
18408 | |
18409 | switch (endianity) | |
18410 | { | |
18411 | case DW_END_big: | |
18412 | byte_order = BFD_ENDIAN_BIG; | |
18413 | break; | |
18414 | case DW_END_little: | |
18415 | byte_order = BFD_ENDIAN_LITTLE; | |
18416 | break; | |
18417 | default: | |
18418 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
18419 | break; | |
18420 | } | |
18421 | } | |
6ccb9162 | 18422 | |
09584414 JB |
18423 | if ((encoding == DW_ATE_signed_fixed || encoding == DW_ATE_unsigned_fixed) |
18424 | && cu->language == language_ada | |
18425 | && has_zero_over_zero_small_attribute (die, cu)) | |
18426 | { | |
18427 | /* brobecker/2018-02-24: This is a fixed point type for which | |
18428 | the scaling factor is represented as fraction whose value | |
18429 | does not make sense (zero divided by zero), so we should | |
18430 | normally never see these. However, there is a small category | |
18431 | of fixed point types for which GNAT is unable to provide | |
18432 | the scaling factor via the standard DWARF mechanisms, and | |
18433 | for which the info is provided via the GNAT encodings instead. | |
18434 | This is likely what this DIE is about. | |
18435 | ||
18436 | Ideally, GNAT should be declaring this type the same way | |
18437 | it declares other fixed point types when using the legacy | |
18438 | GNAT encoding, which is to use a simple signed or unsigned | |
18439 | base type. A report to the GNAT team has been created to | |
18440 | look into it. In the meantime, pretend this type is a simple | |
18441 | signed or unsigned integral, rather than a fixed point type, | |
18442 | to avoid any confusion later on as to how to process this type. */ | |
18443 | encoding = (encoding == DW_ATE_signed_fixed | |
18444 | ? DW_ATE_signed | |
18445 | : DW_ATE_unsigned); | |
18446 | } | |
18447 | ||
6ccb9162 | 18448 | switch (encoding) |
c906108c | 18449 | { |
6ccb9162 UW |
18450 | case DW_ATE_address: |
18451 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 18452 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 18453 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
18454 | break; |
18455 | case DW_ATE_boolean: | |
19f392bc | 18456 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
18457 | break; |
18458 | case DW_ATE_complex_float: | |
103a685e TT |
18459 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
18460 | byte_order); | |
78134374 | 18461 | if (type->code () == TYPE_CODE_ERROR) |
93689ce9 TT |
18462 | { |
18463 | if (name == nullptr) | |
18464 | { | |
18465 | struct obstack *obstack | |
5e22e966 | 18466 | = &cu->per_objfile->objfile->objfile_obstack; |
7d93a1e0 | 18467 | name = obconcat (obstack, "_Complex ", type->name (), |
93689ce9 TT |
18468 | nullptr); |
18469 | } | |
18470 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
18471 | } | |
18472 | else | |
18473 | type = init_complex_type (name, type); | |
6ccb9162 UW |
18474 | break; |
18475 | case DW_ATE_decimal_float: | |
19f392bc | 18476 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
18477 | break; |
18478 | case DW_ATE_float: | |
103a685e | 18479 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
18480 | break; |
18481 | case DW_ATE_signed: | |
eb77c9df | 18482 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18483 | break; |
18484 | case DW_ATE_unsigned: | |
3b2b8fea TT |
18485 | if (cu->language == language_fortran |
18486 | && name | |
61012eef | 18487 | && startswith (name, "character(")) |
19f392bc UW |
18488 | type = init_character_type (objfile, bits, 1, name); |
18489 | else | |
eb77c9df | 18490 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
18491 | break; |
18492 | case DW_ATE_signed_char: | |
6e70227d | 18493 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
18494 | || cu->language == language_pascal |
18495 | || cu->language == language_fortran) | |
19f392bc UW |
18496 | type = init_character_type (objfile, bits, 0, name); |
18497 | else | |
eb77c9df | 18498 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18499 | break; |
18500 | case DW_ATE_unsigned_char: | |
868a0084 | 18501 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 18502 | || cu->language == language_pascal |
c44af4eb TT |
18503 | || cu->language == language_fortran |
18504 | || cu->language == language_rust) | |
19f392bc UW |
18505 | type = init_character_type (objfile, bits, 1, name); |
18506 | else | |
eb77c9df | 18507 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 18508 | break; |
75079b2b | 18509 | case DW_ATE_UTF: |
53e710ac | 18510 | { |
53e710ac PA |
18511 | if (bits == 16) |
18512 | type = builtin_type (arch)->builtin_char16; | |
18513 | else if (bits == 32) | |
18514 | type = builtin_type (arch)->builtin_char32; | |
18515 | else | |
18516 | { | |
b98664d3 | 18517 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 18518 | bits); |
eb77c9df | 18519 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
18520 | } |
18521 | return set_die_type (die, type, cu); | |
18522 | } | |
75079b2b | 18523 | break; |
09584414 JB |
18524 | case DW_ATE_signed_fixed: |
18525 | type = init_fixed_point_type (objfile, bits, 0, name); | |
18526 | finish_fixed_point_type (type, die, cu); | |
18527 | break; | |
18528 | case DW_ATE_unsigned_fixed: | |
18529 | type = init_fixed_point_type (objfile, bits, 1, name); | |
18530 | finish_fixed_point_type (type, die, cu); | |
18531 | break; | |
75079b2b | 18532 | |
6ccb9162 | 18533 | default: |
b98664d3 | 18534 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 18535 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 18536 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 18537 | break; |
c906108c | 18538 | } |
6ccb9162 | 18539 | |
0114d602 | 18540 | if (name && strcmp (name, "char") == 0) |
15152a54 | 18541 | type->set_has_no_signedness (true); |
0114d602 | 18542 | |
2b4424c3 TT |
18543 | maybe_set_alignment (cu, die, type); |
18544 | ||
db558e34 | 18545 | type->set_endianity_is_not_default (gdbarch_byte_order (arch) != byte_order); |
34877895 | 18546 | |
20a5fcbd TT |
18547 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_INT) |
18548 | { | |
18549 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); | |
529908cb | 18550 | if (attr != nullptr && attr->as_unsigned () <= 8 * TYPE_LENGTH (type)) |
20a5fcbd | 18551 | { |
529908cb | 18552 | unsigned real_bit_size = attr->as_unsigned (); |
20a5fcbd TT |
18553 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
18554 | /* Only use the attributes if they make sense together. */ | |
18555 | if (attr == nullptr | |
529908cb TT |
18556 | || (attr->as_unsigned () + real_bit_size |
18557 | <= 8 * TYPE_LENGTH (type))) | |
20a5fcbd TT |
18558 | { |
18559 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_size | |
18560 | = real_bit_size; | |
18561 | if (attr != nullptr) | |
18562 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_offset | |
529908cb | 18563 | = attr->as_unsigned (); |
20a5fcbd TT |
18564 | } |
18565 | } | |
18566 | } | |
18567 | ||
f792889a | 18568 | return set_die_type (die, type, cu); |
c906108c SS |
18569 | } |
18570 | ||
80180f79 SA |
18571 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
18572 | resulting value of the attribute into struct bound_prop. | |
18573 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
18574 | ||
18575 | static int | |
18576 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
18577 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
18578 | struct type *default_type) | |
80180f79 SA |
18579 | { |
18580 | struct dwarf2_property_baton *baton; | |
5e22e966 | 18581 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba TT |
18582 | struct objfile *objfile = per_objfile->objfile; |
18583 | struct obstack *obstack = &objfile->objfile_obstack; | |
80180f79 | 18584 | |
9a49df9d AB |
18585 | gdb_assert (default_type != NULL); |
18586 | ||
80180f79 SA |
18587 | if (attr == NULL || prop == NULL) |
18588 | return 0; | |
18589 | ||
4fc6c0d5 | 18590 | if (attr->form_is_block ()) |
80180f79 | 18591 | { |
8d749320 | 18592 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18593 | baton->property_type = default_type; |
80180f79 | 18594 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18595 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18596 | |
18597 | struct dwarf_block *block = attr->as_block (); | |
18598 | baton->locexpr.size = block->size; | |
18599 | baton->locexpr.data = block->data; | |
216a7e6b AB |
18600 | switch (attr->name) |
18601 | { | |
18602 | case DW_AT_string_length: | |
18603 | baton->locexpr.is_reference = true; | |
18604 | break; | |
18605 | default: | |
18606 | baton->locexpr.is_reference = false; | |
18607 | break; | |
18608 | } | |
8c2e4e06 SM |
18609 | |
18610 | prop->set_locexpr (baton); | |
18611 | gdb_assert (prop->baton () != NULL); | |
80180f79 | 18612 | } |
cd6c91b4 | 18613 | else if (attr->form_is_ref ()) |
80180f79 SA |
18614 | { |
18615 | struct dwarf2_cu *target_cu = cu; | |
18616 | struct die_info *target_die; | |
18617 | struct attribute *target_attr; | |
18618 | ||
18619 | target_die = follow_die_ref (die, attr, &target_cu); | |
18620 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
18621 | if (target_attr == NULL) |
18622 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
18623 | target_cu); | |
80180f79 SA |
18624 | if (target_attr == NULL) |
18625 | return 0; | |
18626 | ||
df25ebbd | 18627 | switch (target_attr->name) |
80180f79 | 18628 | { |
df25ebbd | 18629 | case DW_AT_location: |
cd6c91b4 | 18630 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 18631 | { |
8d749320 | 18632 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18633 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18634 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
8c2e4e06 SM |
18635 | prop->set_loclist (baton); |
18636 | gdb_assert (prop->baton () != NULL); | |
df25ebbd | 18637 | } |
4fc6c0d5 | 18638 | else if (target_attr->form_is_block ()) |
df25ebbd | 18639 | { |
8d749320 | 18640 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18641 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18642 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18643 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18644 | struct dwarf_block *block = target_attr->as_block (); |
18645 | baton->locexpr.size = block->size; | |
18646 | baton->locexpr.data = block->data; | |
9a49df9d | 18647 | baton->locexpr.is_reference = true; |
8c2e4e06 SM |
18648 | prop->set_locexpr (baton); |
18649 | gdb_assert (prop->baton () != NULL); | |
df25ebbd JB |
18650 | } |
18651 | else | |
18652 | { | |
18653 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
18654 | "dynamic property"); | |
18655 | return 0; | |
18656 | } | |
18657 | break; | |
18658 | case DW_AT_data_member_location: | |
18659 | { | |
18660 | LONGEST offset; | |
18661 | ||
18662 | if (!handle_data_member_location (target_die, target_cu, | |
18663 | &offset)) | |
18664 | return 0; | |
18665 | ||
8d749320 | 18666 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18667 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 18668 | target_cu); |
df25ebbd JB |
18669 | baton->offset_info.offset = offset; |
18670 | baton->offset_info.type = die_type (target_die, target_cu); | |
8c2e4e06 | 18671 | prop->set_addr_offset (baton); |
df25ebbd JB |
18672 | break; |
18673 | } | |
80180f79 SA |
18674 | } |
18675 | } | |
cd6c91b4 | 18676 | else if (attr->form_is_constant ()) |
8c2e4e06 | 18677 | prop->set_const_val (attr->constant_value (0)); |
80180f79 SA |
18678 | else |
18679 | { | |
18680 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
18681 | dwarf2_name (die, cu)); | |
18682 | return 0; | |
18683 | } | |
18684 | ||
18685 | return 1; | |
18686 | } | |
18687 | ||
09ba997f | 18688 | /* See read.h. */ |
9a49df9d | 18689 | |
09ba997f | 18690 | struct type * |
293e7e51 | 18691 | dwarf2_per_objfile::int_type (int size_in_bytes, bool unsigned_p) const |
9a49df9d | 18692 | { |
9a49df9d AB |
18693 | struct type *int_type; |
18694 | ||
18695 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
18696 | #define TRY_TYPE(F) \ |
18697 | int_type = (unsigned_p \ | |
18698 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
18699 | : objfile_type (objfile)->builtin_ ## F); \ | |
18700 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
18701 | return int_type |
18702 | ||
18703 | TRY_TYPE (char); | |
18704 | TRY_TYPE (short); | |
18705 | TRY_TYPE (int); | |
18706 | TRY_TYPE (long); | |
18707 | TRY_TYPE (long_long); | |
18708 | ||
18709 | #undef TRY_TYPE | |
18710 | ||
18711 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
18712 | } | |
18713 | ||
09ba997f | 18714 | /* See read.h. */ |
11a8b164 | 18715 | |
09ba997f | 18716 | struct type * |
293e7e51 | 18717 | dwarf2_cu::addr_sized_int_type (bool unsigned_p) const |
11a8b164 | 18718 | { |
293e7e51 SM |
18719 | int addr_size = this->per_cu->addr_size (); |
18720 | return this->per_objfile->int_type (addr_size, unsigned_p); | |
11a8b164 AB |
18721 | } |
18722 | ||
b86352cf AB |
18723 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
18724 | present (which is valid) then compute the default type based on the | |
18725 | compilation units address size. */ | |
18726 | ||
18727 | static struct type * | |
18728 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
18729 | { | |
18730 | struct type *index_type = die_type (die, cu); | |
18731 | ||
18732 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
18733 | without specifying a base type. | |
18734 | In that case, the base type must be set to the type of | |
18735 | the lower bound, upper bound or count, in that order, if any of these | |
18736 | three attributes references an object that has a type. | |
18737 | If no base type is found, the Dwarf-2 specifications say that | |
18738 | a signed integer type of size equal to the size of an address should | |
18739 | be used. | |
18740 | For the following C code: `extern char gdb_int [];' | |
18741 | GCC produces an empty range DIE. | |
18742 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
18743 | high bound or count are not yet handled by this code. */ | |
78134374 | 18744 | if (index_type->code () == TYPE_CODE_VOID) |
293e7e51 | 18745 | index_type = cu->addr_sized_int_type (false); |
b86352cf AB |
18746 | |
18747 | return index_type; | |
18748 | } | |
18749 | ||
a02abb62 JB |
18750 | /* Read the given DW_AT_subrange DIE. */ |
18751 | ||
f792889a | 18752 | static struct type * |
a02abb62 JB |
18753 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
18754 | { | |
4c9ad8c2 | 18755 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
18756 | struct type *range_type; |
18757 | struct attribute *attr; | |
729efb13 | 18758 | struct dynamic_prop low, high; |
4fae6e18 | 18759 | int low_default_is_valid; |
c451ebe5 | 18760 | int high_bound_is_count = 0; |
15d034d0 | 18761 | const char *name; |
d359392f | 18762 | ULONGEST negative_mask; |
e77813c8 | 18763 | |
b86352cf AB |
18764 | orig_base_type = read_subrange_index_type (die, cu); |
18765 | ||
4c9ad8c2 TT |
18766 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
18767 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
18768 | creating the range type, but we use the result of check_typedef | |
18769 | when examining properties of the type. */ | |
18770 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 18771 | |
7e314c57 JK |
18772 | /* The die_type call above may have already set the type for this DIE. */ |
18773 | range_type = get_die_type (die, cu); | |
18774 | if (range_type) | |
18775 | return range_type; | |
18776 | ||
8c2e4e06 | 18777 | high.set_const_val (0); |
729efb13 | 18778 | |
4fae6e18 JK |
18779 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
18780 | omitting DW_AT_lower_bound. */ | |
18781 | switch (cu->language) | |
6e70227d | 18782 | { |
4fae6e18 JK |
18783 | case language_c: |
18784 | case language_cplus: | |
8c2e4e06 | 18785 | low.set_const_val (0); |
4fae6e18 JK |
18786 | low_default_is_valid = 1; |
18787 | break; | |
18788 | case language_fortran: | |
8c2e4e06 | 18789 | low.set_const_val (1); |
4fae6e18 JK |
18790 | low_default_is_valid = 1; |
18791 | break; | |
18792 | case language_d: | |
4fae6e18 | 18793 | case language_objc: |
c44af4eb | 18794 | case language_rust: |
8c2e4e06 | 18795 | low.set_const_val (0); |
4fae6e18 JK |
18796 | low_default_is_valid = (cu->header.version >= 4); |
18797 | break; | |
18798 | case language_ada: | |
18799 | case language_m2: | |
18800 | case language_pascal: | |
8c2e4e06 | 18801 | low.set_const_val (1); |
4fae6e18 JK |
18802 | low_default_is_valid = (cu->header.version >= 4); |
18803 | break; | |
18804 | default: | |
8c2e4e06 | 18805 | low.set_const_val (0); |
4fae6e18 JK |
18806 | low_default_is_valid = 0; |
18807 | break; | |
a02abb62 JB |
18808 | } |
18809 | ||
e142c38c | 18810 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 18811 | if (attr != nullptr) |
9a49df9d | 18812 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 18813 | else if (!low_default_is_valid) |
b98664d3 | 18814 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
18815 | "- DIE at %s [in module %s]"), |
18816 | sect_offset_str (die->sect_off), | |
5e22e966 | 18817 | objfile_name (cu->per_objfile->objfile)); |
a02abb62 | 18818 | |
506f5c41 TV |
18819 | struct attribute *attr_ub, *attr_count; |
18820 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 18821 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 18822 | { |
506f5c41 | 18823 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 18824 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 18825 | { |
c451ebe5 | 18826 | /* If bounds are constant do the final calculation here. */ |
8c2e4e06 SM |
18827 | if (low.kind () == PROP_CONST && high.kind () == PROP_CONST) |
18828 | high.set_const_val (low.const_val () + high.const_val () - 1); | |
c451ebe5 SA |
18829 | else |
18830 | high_bound_is_count = 1; | |
c2ff108b | 18831 | } |
506f5c41 TV |
18832 | else |
18833 | { | |
18834 | if (attr_ub != NULL) | |
18835 | complaint (_("Unresolved DW_AT_upper_bound " | |
18836 | "- DIE at %s [in module %s]"), | |
18837 | sect_offset_str (die->sect_off), | |
5e22e966 | 18838 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 TV |
18839 | if (attr_count != NULL) |
18840 | complaint (_("Unresolved DW_AT_count " | |
18841 | "- DIE at %s [in module %s]"), | |
18842 | sect_offset_str (die->sect_off), | |
5e22e966 | 18843 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 | 18844 | } |
e77813c8 | 18845 | } |
a02abb62 | 18846 | |
4e962e74 TT |
18847 | LONGEST bias = 0; |
18848 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 18849 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 18850 | bias = bias_attr->constant_value (0); |
4e962e74 | 18851 | |
dbb9c2b1 JB |
18852 | /* Normally, the DWARF producers are expected to use a signed |
18853 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
18854 | But this is unfortunately not always the case, as witnessed | |
18855 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
18856 | is used instead. To work around that ambiguity, we treat | |
18857 | the bounds as signed, and thus sign-extend their values, when | |
18858 | the base type is signed. */ | |
6e70227d | 18859 | negative_mask = |
d359392f | 18860 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
8c2e4e06 | 18861 | if (low.kind () == PROP_CONST |
c6d940a9 | 18862 | && !base_type->is_unsigned () && (low.const_val () & negative_mask)) |
8c2e4e06 SM |
18863 | low.set_const_val (low.const_val () | negative_mask); |
18864 | if (high.kind () == PROP_CONST | |
c6d940a9 | 18865 | && !base_type->is_unsigned () && (high.const_val () & negative_mask)) |
8c2e4e06 | 18866 | high.set_const_val (high.const_val () | negative_mask); |
43bbcdc2 | 18867 | |
5bbd8269 AB |
18868 | /* Check for bit and byte strides. */ |
18869 | struct dynamic_prop byte_stride_prop; | |
18870 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
18871 | if (attr_byte_stride != nullptr) | |
18872 | { | |
293e7e51 | 18873 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
18874 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
18875 | prop_type); | |
18876 | } | |
18877 | ||
18878 | struct dynamic_prop bit_stride_prop; | |
18879 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
18880 | if (attr_bit_stride != nullptr) | |
18881 | { | |
18882 | /* It only makes sense to have either a bit or byte stride. */ | |
18883 | if (attr_byte_stride != nullptr) | |
18884 | { | |
18885 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
18886 | "- DIE at %s [in module %s]"), | |
18887 | sect_offset_str (die->sect_off), | |
5e22e966 | 18888 | objfile_name (cu->per_objfile->objfile)); |
5bbd8269 AB |
18889 | attr_bit_stride = nullptr; |
18890 | } | |
18891 | else | |
18892 | { | |
293e7e51 | 18893 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
18894 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
18895 | prop_type); | |
18896 | } | |
18897 | } | |
18898 | ||
18899 | if (attr_byte_stride != nullptr | |
18900 | || attr_bit_stride != nullptr) | |
18901 | { | |
18902 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
18903 | struct dynamic_prop *stride | |
18904 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
18905 | ||
18906 | range_type | |
18907 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
18908 | &high, bias, stride, byte_stride_p); | |
18909 | } | |
18910 | else | |
18911 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 18912 | |
c451ebe5 | 18913 | if (high_bound_is_count) |
599088e3 | 18914 | range_type->bounds ()->flag_upper_bound_is_count = 1; |
c451ebe5 | 18915 | |
c2ff108b JK |
18916 | /* Ada expects an empty array on no boundary attributes. */ |
18917 | if (attr == NULL && cu->language != language_ada) | |
8c2e4e06 | 18918 | range_type->bounds ()->high.set_undefined (); |
c2ff108b | 18919 | |
39cbfefa DJ |
18920 | name = dwarf2_name (die, cu); |
18921 | if (name) | |
d0e39ea2 | 18922 | range_type->set_name (name); |
6e70227d | 18923 | |
e142c38c | 18924 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 18925 | if (attr != nullptr) |
529908cb | 18926 | TYPE_LENGTH (range_type) = attr->constant_value (0); |
a02abb62 | 18927 | |
2b4424c3 TT |
18928 | maybe_set_alignment (cu, die, range_type); |
18929 | ||
7e314c57 JK |
18930 | set_die_type (die, range_type, cu); |
18931 | ||
18932 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
18933 | set_descriptive_type (range_type, die, cu); |
18934 | ||
7e314c57 | 18935 | return range_type; |
a02abb62 | 18936 | } |
6e70227d | 18937 | |
f792889a | 18938 | static struct type * |
81a17f79 JB |
18939 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
18940 | { | |
18941 | struct type *type; | |
81a17f79 | 18942 | |
5e22e966 | 18943 | type = init_type (cu->per_objfile->objfile, TYPE_CODE_VOID, 0, NULL); |
d0e39ea2 | 18944 | type->set_name (dwarf2_name (die, cu)); |
81a17f79 | 18945 | |
74a2f8ff | 18946 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 18947 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
18948 | such a type, we treat it as a stub, and try to resolve it later on, |
18949 | when needed. */ | |
18950 | if (cu->language == language_ada) | |
b4b73759 | 18951 | type->set_is_stub (true); |
74a2f8ff | 18952 | |
f792889a | 18953 | return set_die_type (die, type, cu); |
81a17f79 | 18954 | } |
a02abb62 | 18955 | |
639d11d3 DC |
18956 | /* Read a single die and all its descendents. Set the die's sibling |
18957 | field to NULL; set other fields in the die correctly, and set all | |
18958 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
18959 | location of the info_ptr after reading all of those dies. PARENT | |
18960 | is the parent of the die in question. */ | |
18961 | ||
18962 | static struct die_info * | |
dee91e82 | 18963 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
18964 | const gdb_byte *info_ptr, |
18965 | const gdb_byte **new_info_ptr, | |
dee91e82 | 18966 | struct die_info *parent) |
639d11d3 DC |
18967 | { |
18968 | struct die_info *die; | |
d521ce57 | 18969 | const gdb_byte *cur_ptr; |
639d11d3 | 18970 | |
3e225074 | 18971 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
18972 | if (die == NULL) |
18973 | { | |
18974 | *new_info_ptr = cur_ptr; | |
18975 | return NULL; | |
18976 | } | |
93311388 | 18977 | store_in_ref_table (die, reader->cu); |
639d11d3 | 18978 | |
3e225074 | 18979 | if (die->has_children) |
bf6af496 | 18980 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
18981 | else |
18982 | { | |
18983 | die->child = NULL; | |
18984 | *new_info_ptr = cur_ptr; | |
18985 | } | |
18986 | ||
18987 | die->sibling = NULL; | |
18988 | die->parent = parent; | |
18989 | return die; | |
18990 | } | |
18991 | ||
18992 | /* Read a die, all of its descendents, and all of its siblings; set | |
18993 | all of the fields of all of the dies correctly. Arguments are as | |
18994 | in read_die_and_children. */ | |
18995 | ||
18996 | static struct die_info * | |
bf6af496 | 18997 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
18998 | const gdb_byte *info_ptr, |
18999 | const gdb_byte **new_info_ptr, | |
bf6af496 | 19000 | struct die_info *parent) |
639d11d3 DC |
19001 | { |
19002 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 19003 | const gdb_byte *cur_ptr; |
639d11d3 | 19004 | |
c906108c | 19005 | cur_ptr = info_ptr; |
639d11d3 DC |
19006 | first_die = last_sibling = NULL; |
19007 | ||
19008 | while (1) | |
c906108c | 19009 | { |
639d11d3 | 19010 | struct die_info *die |
dee91e82 | 19011 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 19012 | |
1d325ec1 | 19013 | if (die == NULL) |
c906108c | 19014 | { |
639d11d3 DC |
19015 | *new_info_ptr = cur_ptr; |
19016 | return first_die; | |
c906108c | 19017 | } |
1d325ec1 DJ |
19018 | |
19019 | if (!first_die) | |
19020 | first_die = die; | |
c906108c | 19021 | else |
1d325ec1 DJ |
19022 | last_sibling->sibling = die; |
19023 | ||
19024 | last_sibling = die; | |
c906108c | 19025 | } |
c906108c SS |
19026 | } |
19027 | ||
bf6af496 DE |
19028 | /* Read a die, all of its descendents, and all of its siblings; set |
19029 | all of the fields of all of the dies correctly. Arguments are as | |
19030 | in read_die_and_children. | |
19031 | This the main entry point for reading a DIE and all its children. */ | |
19032 | ||
19033 | static struct die_info * | |
19034 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
19035 | const gdb_byte *info_ptr, |
19036 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
19037 | struct die_info *parent) |
19038 | { | |
19039 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
19040 | new_info_ptr, parent); | |
19041 | ||
b4f54984 | 19042 | if (dwarf_die_debug) |
bf6af496 DE |
19043 | { |
19044 | fprintf_unfiltered (gdb_stdlog, | |
19045 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 19046 | reader->die_section->get_name (), |
bf6af496 DE |
19047 | (unsigned) (info_ptr - reader->die_section->buffer), |
19048 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 19049 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
19050 | } |
19051 | ||
19052 | return die; | |
19053 | } | |
19054 | ||
3019eac3 DE |
19055 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
19056 | attributes. | |
19057 | The caller is responsible for filling in the extra attributes | |
19058 | and updating (*DIEP)->num_attrs. | |
19059 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 19060 | except for its child, sibling, and parent fields. */ |
93311388 | 19061 | |
d521ce57 | 19062 | static const gdb_byte * |
3019eac3 | 19063 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 19064 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 19065 | int num_extra_attrs) |
93311388 | 19066 | { |
b64f50a1 | 19067 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
19068 | struct abbrev_info *abbrev; |
19069 | struct die_info *die; | |
19070 | struct dwarf2_cu *cu = reader->cu; | |
19071 | bfd *abfd = reader->abfd; | |
19072 | ||
9c541725 | 19073 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
19074 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19075 | info_ptr += bytes_read; | |
19076 | if (!abbrev_number) | |
19077 | { | |
19078 | *diep = NULL; | |
93311388 DE |
19079 | return info_ptr; |
19080 | } | |
19081 | ||
685af9cd | 19082 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 19083 | if (!abbrev) |
348e048f DE |
19084 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
19085 | abbrev_number, | |
19086 | bfd_get_filename (abfd)); | |
19087 | ||
3019eac3 | 19088 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 19089 | die->sect_off = sect_off; |
93311388 DE |
19090 | die->tag = abbrev->tag; |
19091 | die->abbrev = abbrev_number; | |
3e225074 | 19092 | die->has_children = abbrev->has_children; |
93311388 | 19093 | |
3019eac3 DE |
19094 | /* Make the result usable. |
19095 | The caller needs to update num_attrs after adding the extra | |
19096 | attributes. */ | |
93311388 DE |
19097 | die->num_attrs = abbrev->num_attrs; |
19098 | ||
7a5f294d | 19099 | bool any_need_reprocess = false; |
93311388 | 19100 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e | 19101 | { |
7a5f294d TT |
19102 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
19103 | info_ptr); | |
19104 | if (die->attrs[i].requires_reprocessing_p ()) | |
19105 | any_need_reprocess = true; | |
18a8505e AT |
19106 | } |
19107 | ||
052c8bb8 | 19108 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
529908cb TT |
19109 | if (attr != nullptr && attr->form_is_unsigned ()) |
19110 | cu->str_offsets_base = attr->as_unsigned (); | |
93311388 | 19111 | |
41144253 | 19112 | attr = die->attr (DW_AT_loclists_base); |
19113 | if (attr != nullptr) | |
529908cb | 19114 | cu->loclist_base = attr->as_unsigned (); |
41144253 | 19115 | |
a39fdb41 | 19116 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
19117 | if (maybe_addr_base.has_value ()) |
19118 | cu->addr_base = *maybe_addr_base; | |
d0ce17d8 CT |
19119 | |
19120 | attr = die->attr (DW_AT_rnglists_base); | |
19121 | if (attr != nullptr) | |
529908cb | 19122 | cu->ranges_base = attr->as_unsigned (); |
d0ce17d8 | 19123 | |
7a5f294d TT |
19124 | if (any_need_reprocess) |
19125 | { | |
19126 | for (i = 0; i < abbrev->num_attrs; ++i) | |
19127 | { | |
19128 | if (die->attrs[i].requires_reprocessing_p ()) | |
19129 | read_attribute_reprocess (reader, &die->attrs[i], die->tag); | |
19130 | } | |
19131 | } | |
93311388 | 19132 | *diep = die; |
93311388 DE |
19133 | return info_ptr; |
19134 | } | |
19135 | ||
3019eac3 DE |
19136 | /* Read a die and all its attributes. |
19137 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 19138 | except for its child, sibling, and parent fields. */ |
3019eac3 | 19139 | |
d521ce57 | 19140 | static const gdb_byte * |
3019eac3 | 19141 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 19142 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 19143 | { |
d521ce57 | 19144 | const gdb_byte *result; |
bf6af496 | 19145 | |
3e225074 | 19146 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 19147 | |
b4f54984 | 19148 | if (dwarf_die_debug) |
bf6af496 DE |
19149 | { |
19150 | fprintf_unfiltered (gdb_stdlog, | |
19151 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 19152 | reader->die_section->get_name (), |
bf6af496 DE |
19153 | (unsigned) (info_ptr - reader->die_section->buffer), |
19154 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 19155 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
19156 | } |
19157 | ||
19158 | return result; | |
3019eac3 | 19159 | } |
433df2d4 | 19160 | \f |
c906108c | 19161 | |
72bf9492 DJ |
19162 | /* Returns nonzero if TAG represents a type that we might generate a partial |
19163 | symbol for. */ | |
19164 | ||
19165 | static int | |
d8f62e84 | 19166 | is_type_tag_for_partial (int tag, enum language lang) |
72bf9492 DJ |
19167 | { |
19168 | switch (tag) | |
19169 | { | |
19170 | #if 0 | |
19171 | /* Some types that would be reasonable to generate partial symbols for, | |
d8f62e84 TT |
19172 | that we don't at present. Note that normally this does not |
19173 | matter, mainly because C compilers don't give names to these | |
19174 | types, but instead emit DW_TAG_typedef. */ | |
72bf9492 DJ |
19175 | case DW_TAG_file_type: |
19176 | case DW_TAG_ptr_to_member_type: | |
19177 | case DW_TAG_set_type: | |
19178 | case DW_TAG_string_type: | |
19179 | case DW_TAG_subroutine_type: | |
19180 | #endif | |
d8f62e84 TT |
19181 | |
19182 | /* GNAT may emit an array with a name, but no typedef, so we | |
19183 | need to make a symbol in this case. */ | |
19184 | case DW_TAG_array_type: | |
19185 | return lang == language_ada; | |
19186 | ||
72bf9492 DJ |
19187 | case DW_TAG_base_type: |
19188 | case DW_TAG_class_type: | |
680b30c7 | 19189 | case DW_TAG_interface_type: |
72bf9492 DJ |
19190 | case DW_TAG_enumeration_type: |
19191 | case DW_TAG_structure_type: | |
19192 | case DW_TAG_subrange_type: | |
19193 | case DW_TAG_typedef: | |
19194 | case DW_TAG_union_type: | |
19195 | return 1; | |
19196 | default: | |
19197 | return 0; | |
19198 | } | |
19199 | } | |
19200 | ||
19201 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
19202 | ||
19203 | static struct partial_die_info * | |
dee91e82 | 19204 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 19205 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 19206 | { |
dee91e82 | 19207 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 19208 | struct objfile *objfile = cu->per_objfile->objfile; |
72bf9492 | 19209 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 19210 | unsigned int bytes_read; |
5afb4e99 | 19211 | unsigned int load_all = 0; |
72bf9492 DJ |
19212 | int nesting_level = 1; |
19213 | ||
19214 | parent_die = NULL; | |
19215 | last_die = NULL; | |
19216 | ||
7adf1e79 DE |
19217 | gdb_assert (cu->per_cu != NULL); |
19218 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
19219 | load_all = 1; |
19220 | ||
72bf9492 DJ |
19221 | cu->partial_dies |
19222 | = htab_create_alloc_ex (cu->header.length / 12, | |
19223 | partial_die_hash, | |
19224 | partial_die_eq, | |
19225 | NULL, | |
19226 | &cu->comp_unit_obstack, | |
19227 | hashtab_obstack_allocate, | |
19228 | dummy_obstack_deallocate); | |
19229 | ||
72bf9492 DJ |
19230 | while (1) |
19231 | { | |
685af9cd | 19232 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
19233 | |
19234 | /* A NULL abbrev means the end of a series of children. */ | |
19235 | if (abbrev == NULL) | |
19236 | { | |
19237 | if (--nesting_level == 0) | |
cd9983dd YQ |
19238 | return first_die; |
19239 | ||
72bf9492 DJ |
19240 | info_ptr += bytes_read; |
19241 | last_die = parent_die; | |
19242 | parent_die = parent_die->die_parent; | |
19243 | continue; | |
19244 | } | |
19245 | ||
98bfdba5 PA |
19246 | /* Check for template arguments. We never save these; if |
19247 | they're seen, we just mark the parent, and go on our way. */ | |
19248 | if (parent_die != NULL | |
19249 | && cu->language == language_cplus | |
19250 | && (abbrev->tag == DW_TAG_template_type_param | |
19251 | || abbrev->tag == DW_TAG_template_value_param)) | |
19252 | { | |
19253 | parent_die->has_template_arguments = 1; | |
19254 | ||
19255 | if (!load_all) | |
19256 | { | |
19257 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 19258 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19259 | continue; |
19260 | } | |
19261 | } | |
19262 | ||
0d99eb77 | 19263 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
19264 | Skip their other children. */ |
19265 | if (!load_all | |
19266 | && cu->language == language_cplus | |
19267 | && parent_die != NULL | |
f9b5d5ea TV |
19268 | && parent_die->tag == DW_TAG_subprogram |
19269 | && abbrev->tag != DW_TAG_inlined_subroutine) | |
98bfdba5 | 19270 | { |
dee91e82 | 19271 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19272 | continue; |
19273 | } | |
19274 | ||
5afb4e99 DJ |
19275 | /* Check whether this DIE is interesting enough to save. Normally |
19276 | we would not be interested in members here, but there may be | |
19277 | later variables referencing them via DW_AT_specification (for | |
19278 | static members). */ | |
19279 | if (!load_all | |
d8f62e84 | 19280 | && !is_type_tag_for_partial (abbrev->tag, cu->language) |
72929c62 | 19281 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
19282 | && abbrev->tag != DW_TAG_enumerator |
19283 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 19284 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 19285 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 19286 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 19287 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 19288 | && abbrev->tag != DW_TAG_module |
95554aad | 19289 | && abbrev->tag != DW_TAG_member |
74921315 KS |
19290 | && abbrev->tag != DW_TAG_imported_unit |
19291 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
19292 | { |
19293 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19294 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
19295 | continue; |
19296 | } | |
19297 | ||
6f06d47b YQ |
19298 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
19299 | abbrev); | |
cd9983dd | 19300 | |
48fbe735 | 19301 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
19302 | |
19303 | /* This two-pass algorithm for processing partial symbols has a | |
19304 | high cost in cache pressure. Thus, handle some simple cases | |
19305 | here which cover the majority of C partial symbols. DIEs | |
19306 | which neither have specification tags in them, nor could have | |
19307 | specification tags elsewhere pointing at them, can simply be | |
19308 | processed and discarded. | |
19309 | ||
19310 | This segment is also optional; scan_partial_symbols and | |
19311 | add_partial_symbol will handle these DIEs if we chain | |
19312 | them in normally. When compilers which do not emit large | |
19313 | quantities of duplicate debug information are more common, | |
19314 | this code can probably be removed. */ | |
19315 | ||
19316 | /* Any complete simple types at the top level (pretty much all | |
19317 | of them, for a language without namespaces), can be processed | |
19318 | directly. */ | |
19319 | if (parent_die == NULL | |
cd9983dd YQ |
19320 | && pdi.has_specification == 0 |
19321 | && pdi.is_declaration == 0 | |
19322 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
19323 | || pdi.tag == DW_TAG_base_type | |
d8f62e84 | 19324 | || pdi.tag == DW_TAG_array_type |
cd9983dd | 19325 | || pdi.tag == DW_TAG_subrange_type)) |
72bf9492 | 19326 | { |
7d00ffec | 19327 | if (building_psymtab && pdi.raw_name != NULL) |
f0fbb768 TT |
19328 | add_partial_symbol (&pdi, cu); |
19329 | ||
cd9983dd | 19330 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19331 | continue; |
19332 | } | |
19333 | ||
d8228535 JK |
19334 | /* The exception for DW_TAG_typedef with has_children above is |
19335 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 19336 | type_name_or_error will error on such types later. |
d8228535 JK |
19337 | |
19338 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
19339 | it could not find the child DIEs referenced later, this is checked | |
19340 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
19341 | ||
cd9983dd | 19342 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 19343 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 19344 | "- DIE at %s [in module %s]"), |
cd9983dd | 19345 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 19346 | |
72bf9492 DJ |
19347 | /* If we're at the second level, and we're an enumerator, and |
19348 | our parent has no specification (meaning possibly lives in a | |
19349 | namespace elsewhere), then we can add the partial symbol now | |
19350 | instead of queueing it. */ | |
cd9983dd | 19351 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
19352 | && parent_die != NULL |
19353 | && parent_die->die_parent == NULL | |
19354 | && parent_die->tag == DW_TAG_enumeration_type | |
19355 | && parent_die->has_specification == 0) | |
19356 | { | |
7d00ffec | 19357 | if (pdi.raw_name == NULL) |
b98664d3 | 19358 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 19359 | else if (building_psymtab) |
f0fbb768 | 19360 | add_partial_symbol (&pdi, cu); |
72bf9492 | 19361 | |
cd9983dd | 19362 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19363 | continue; |
19364 | } | |
19365 | ||
cd9983dd | 19366 | struct partial_die_info *part_die |
6f06d47b | 19367 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 19368 | |
72bf9492 DJ |
19369 | /* We'll save this DIE so link it in. */ |
19370 | part_die->die_parent = parent_die; | |
19371 | part_die->die_sibling = NULL; | |
19372 | part_die->die_child = NULL; | |
19373 | ||
19374 | if (last_die && last_die == parent_die) | |
19375 | last_die->die_child = part_die; | |
19376 | else if (last_die) | |
19377 | last_die->die_sibling = part_die; | |
19378 | ||
19379 | last_die = part_die; | |
19380 | ||
19381 | if (first_die == NULL) | |
19382 | first_die = part_die; | |
19383 | ||
19384 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
19385 | find interesting need to be in the hash table, because we | |
19386 | also have the parent/sibling/child chains; only those that we | |
19387 | might refer to by offset later during partial symbol reading. | |
19388 | ||
19389 | For now this means things that might have be the target of a | |
19390 | DW_AT_specification, DW_AT_abstract_origin, or | |
19391 | DW_AT_extension. DW_AT_extension will refer only to | |
19392 | namespaces; DW_AT_abstract_origin refers to functions (and | |
19393 | many things under the function DIE, but we do not recurse | |
19394 | into function DIEs during partial symbol reading) and | |
19395 | possibly variables as well; DW_AT_specification refers to | |
19396 | declarations. Declarations ought to have the DW_AT_declaration | |
19397 | flag. It happens that GCC forgets to put it in sometimes, but | |
19398 | only for functions, not for types. | |
19399 | ||
19400 | Adding more things than necessary to the hash table is harmless | |
19401 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
19402 | wasted time in find_partial_die, when we reread the compilation |
19403 | unit with load_all_dies set. */ | |
72bf9492 | 19404 | |
5afb4e99 | 19405 | if (load_all |
72929c62 | 19406 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 19407 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
19408 | || abbrev->tag == DW_TAG_variable |
19409 | || abbrev->tag == DW_TAG_namespace | |
19410 | || part_die->is_declaration) | |
19411 | { | |
19412 | void **slot; | |
19413 | ||
19414 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
19415 | to_underlying (part_die->sect_off), |
19416 | INSERT); | |
72bf9492 DJ |
19417 | *slot = part_die; |
19418 | } | |
19419 | ||
72bf9492 | 19420 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 19421 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
19422 | languages we have to, so that we can get at method physnames |
19423 | to infer fully qualified class names, for DW_AT_specification, | |
19424 | and for C++ template arguments. For C++, we also look one level | |
19425 | inside functions to find template arguments (if the name of the | |
19426 | function does not already contain the template arguments). | |
bc30ff58 | 19427 | |
0a4b0913 AB |
19428 | For Ada and Fortran, we need to scan the children of subprograms |
19429 | and lexical blocks as well because these languages allow the | |
19430 | definition of nested entities that could be interesting for the | |
19431 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 19432 | if (last_die->has_children |
5afb4e99 DJ |
19433 | && (load_all |
19434 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 19435 | || last_die->tag == DW_TAG_module |
72bf9492 | 19436 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
19437 | || (cu->language == language_cplus |
19438 | && last_die->tag == DW_TAG_subprogram | |
7d00ffec TT |
19439 | && (last_die->raw_name == NULL |
19440 | || strchr (last_die->raw_name, '<') == NULL)) | |
72bf9492 DJ |
19441 | || (cu->language != language_c |
19442 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 19443 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 19444 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 19445 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
19446 | || ((cu->language == language_ada |
19447 | || cu->language == language_fortran) | |
bc30ff58 JB |
19448 | && (last_die->tag == DW_TAG_subprogram |
19449 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
19450 | { |
19451 | nesting_level++; | |
19452 | parent_die = last_die; | |
19453 | continue; | |
19454 | } | |
19455 | ||
19456 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19457 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
19458 | |
19459 | /* Back to the top, do it again. */ | |
19460 | } | |
19461 | } | |
19462 | ||
6f06d47b YQ |
19463 | partial_die_info::partial_die_info (sect_offset sect_off_, |
19464 | struct abbrev_info *abbrev) | |
19465 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
19466 | { | |
19467 | } | |
19468 | ||
7d00ffec TT |
19469 | /* See class definition. */ |
19470 | ||
19471 | const char * | |
19472 | partial_die_info::name (dwarf2_cu *cu) | |
19473 | { | |
19474 | if (!canonical_name && raw_name != nullptr) | |
19475 | { | |
19476 | struct objfile *objfile = cu->per_objfile->objfile; | |
19477 | raw_name = dwarf2_canonicalize_name (raw_name, cu, objfile); | |
19478 | canonical_name = 1; | |
19479 | } | |
19480 | ||
19481 | return raw_name; | |
19482 | } | |
19483 | ||
35cc7ed7 YQ |
19484 | /* Read a minimal amount of information into the minimal die structure. |
19485 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 19486 | |
48fbe735 YQ |
19487 | const gdb_byte * |
19488 | partial_die_info::read (const struct die_reader_specs *reader, | |
19489 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 19490 | { |
dee91e82 | 19491 | struct dwarf2_cu *cu = reader->cu; |
976ca316 | 19492 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
fa238c03 | 19493 | unsigned int i; |
c5aa993b | 19494 | int has_low_pc_attr = 0; |
c906108c | 19495 | int has_high_pc_attr = 0; |
91da1414 | 19496 | int high_pc_relative = 0; |
c906108c | 19497 | |
fd0a254f | 19498 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 19499 | { |
e7da7f8f | 19500 | attribute attr; |
7a5f294d | 19501 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
18a8505e | 19502 | /* String and address offsets that need to do the reprocessing have |
dda83cd7 | 19503 | already been read at this point, so there is no need to wait until |
18a8505e | 19504 | the loop terminates to do the reprocessing. */ |
7a5f294d | 19505 | if (attr.requires_reprocessing_p ()) |
d0ce17d8 | 19506 | read_attribute_reprocess (reader, &attr, tag); |
c906108c | 19507 | /* Store the data if it is of an attribute we want to keep in a |
dda83cd7 | 19508 | partial symbol table. */ |
c906108c SS |
19509 | switch (attr.name) |
19510 | { | |
19511 | case DW_AT_name: | |
48fbe735 | 19512 | switch (tag) |
71c25dea TT |
19513 | { |
19514 | case DW_TAG_compile_unit: | |
95554aad | 19515 | case DW_TAG_partial_unit: |
348e048f | 19516 | case DW_TAG_type_unit: |
71c25dea TT |
19517 | /* Compilation units have a DW_AT_name that is a filename, not |
19518 | a source language identifier. */ | |
19519 | case DW_TAG_enumeration_type: | |
19520 | case DW_TAG_enumerator: | |
19521 | /* These tags always have simple identifiers already; no need | |
19522 | to canonicalize them. */ | |
7d00ffec | 19523 | canonical_name = 1; |
2c830f54 | 19524 | raw_name = attr.as_string (); |
71c25dea TT |
19525 | break; |
19526 | default: | |
7d00ffec | 19527 | canonical_name = 0; |
2c830f54 | 19528 | raw_name = attr.as_string (); |
71c25dea TT |
19529 | break; |
19530 | } | |
c906108c | 19531 | break; |
31ef98ae | 19532 | case DW_AT_linkage_name: |
c906108c | 19533 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
19534 | /* Note that both forms of linkage name might appear. We |
19535 | assume they will be the same, and we only store the last | |
19536 | one we see. */ | |
95f982e5 | 19537 | linkage_name = attr.as_string (); |
c906108c SS |
19538 | break; |
19539 | case DW_AT_low_pc: | |
19540 | has_low_pc_attr = 1; | |
95f982e5 | 19541 | lowpc = attr.as_address (); |
c906108c SS |
19542 | break; |
19543 | case DW_AT_high_pc: | |
19544 | has_high_pc_attr = 1; | |
95f982e5 | 19545 | highpc = attr.as_address (); |
cd6c91b4 | 19546 | if (cu->header.version >= 4 && attr.form_is_constant ()) |
31aa7e4e | 19547 | high_pc_relative = 1; |
c906108c SS |
19548 | break; |
19549 | case DW_AT_location: | |
dda83cd7 SM |
19550 | /* Support the .debug_loc offsets. */ |
19551 | if (attr.form_is_block ()) | |
19552 | { | |
9d2246fc | 19553 | d.locdesc = attr.as_block (); |
dda83cd7 SM |
19554 | } |
19555 | else if (attr.form_is_section_offset ()) | |
19556 | { | |
4d3c2250 | 19557 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 SM |
19558 | } |
19559 | else | |
19560 | { | |
4d3c2250 KB |
19561 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
19562 | "partial symbol information"); | |
dda83cd7 | 19563 | } |
c906108c | 19564 | break; |
c906108c | 19565 | case DW_AT_external: |
c45bc3f8 | 19566 | is_external = attr.as_boolean (); |
c906108c SS |
19567 | break; |
19568 | case DW_AT_declaration: | |
c45bc3f8 | 19569 | is_declaration = attr.as_boolean (); |
c906108c SS |
19570 | break; |
19571 | case DW_AT_type: | |
48fbe735 | 19572 | has_type = 1; |
c906108c SS |
19573 | break; |
19574 | case DW_AT_abstract_origin: | |
19575 | case DW_AT_specification: | |
72bf9492 | 19576 | case DW_AT_extension: |
48fbe735 | 19577 | has_specification = 1; |
0826b30a | 19578 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 19579 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 19580 | || cu->per_cu->is_dwz); |
c906108c SS |
19581 | break; |
19582 | case DW_AT_sibling: | |
19583 | /* Ignore absolute siblings, they might point outside of | |
19584 | the current compile unit. */ | |
19585 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 19586 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 19587 | else |
b9502d3f | 19588 | { |
48fbe735 | 19589 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 19590 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 19591 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
19592 | |
19593 | if (sibling_ptr < info_ptr) | |
b98664d3 | 19594 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 19595 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 19596 | reader->die_section->overflow_complaint (); |
b9502d3f | 19597 | else |
48fbe735 | 19598 | sibling = sibling_ptr; |
b9502d3f | 19599 | } |
c906108c | 19600 | break; |
dda83cd7 SM |
19601 | case DW_AT_byte_size: |
19602 | has_byte_size = 1; | |
19603 | break; | |
19604 | case DW_AT_const_value: | |
19605 | has_const_value = 1; | |
19606 | break; | |
68511cec CES |
19607 | case DW_AT_calling_convention: |
19608 | /* DWARF doesn't provide a way to identify a program's source-level | |
19609 | entry point. DW_AT_calling_convention attributes are only meant | |
19610 | to describe functions' calling conventions. | |
19611 | ||
19612 | However, because it's a necessary piece of information in | |
0c1b455e TT |
19613 | Fortran, and before DWARF 4 DW_CC_program was the only |
19614 | piece of debugging information whose definition refers to | |
19615 | a 'main program' at all, several compilers marked Fortran | |
19616 | main programs with DW_CC_program --- even when those | |
19617 | functions use the standard calling conventions. | |
19618 | ||
19619 | Although DWARF now specifies a way to provide this | |
19620 | information, we support this practice for backward | |
19621 | compatibility. */ | |
529908cb | 19622 | if (attr.constant_value (0) == DW_CC_program |
0c1b455e | 19623 | && cu->language == language_fortran) |
48fbe735 | 19624 | main_subprogram = 1; |
68511cec | 19625 | break; |
481860b3 | 19626 | case DW_AT_inline: |
529908cb TT |
19627 | { |
19628 | LONGEST value = attr.constant_value (-1); | |
19629 | if (value == DW_INL_inlined | |
19630 | || value == DW_INL_declared_inlined) | |
19631 | may_be_inlined = 1; | |
19632 | } | |
481860b3 | 19633 | break; |
95554aad TT |
19634 | |
19635 | case DW_AT_import: | |
48fbe735 | 19636 | if (tag == DW_TAG_imported_unit) |
36586728 | 19637 | { |
0826b30a | 19638 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 19639 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
19640 | || cu->per_cu->is_dwz); |
19641 | } | |
95554aad TT |
19642 | break; |
19643 | ||
0c1b455e | 19644 | case DW_AT_main_subprogram: |
c45bc3f8 | 19645 | main_subprogram = attr.as_boolean (); |
0c1b455e TT |
19646 | break; |
19647 | ||
05caa1d2 TT |
19648 | case DW_AT_ranges: |
19649 | { | |
d0ce17d8 CT |
19650 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO |
19651 | skeleton. We take advantage of the fact the DW_AT_ranges | |
19652 | does not appear in DW_TAG_compile_unit of DWO files. | |
19653 | ||
19654 | Attributes of the form DW_FORM_rnglistx have already had | |
dda83cd7 | 19655 | their value changed by read_rnglist_index and already |
d0ce17d8 CT |
19656 | include DW_AT_rnglists_base, so don't need to add the ranges |
19657 | base, either. */ | |
19658 | int need_ranges_base = (tag != DW_TAG_compile_unit | |
19659 | && attr.form != DW_FORM_rnglistx); | |
529908cb TT |
19660 | /* It would be nice to reuse dwarf2_get_pc_bounds here, |
19661 | but that requires a full DIE, so instead we just | |
19662 | reimplement it. */ | |
19663 | unsigned int ranges_offset = (attr.constant_value (0) | |
05caa1d2 TT |
19664 | + (need_ranges_base |
19665 | ? cu->ranges_base | |
19666 | : 0)); | |
19667 | ||
19668 | /* Value of the DW_AT_ranges attribute is the offset in the | |
19669 | .debug_ranges section. */ | |
19670 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
d0ce17d8 | 19671 | nullptr, tag)) |
05caa1d2 TT |
19672 | has_pc_info = 1; |
19673 | } | |
19674 | break; | |
19675 | ||
c906108c SS |
19676 | default: |
19677 | break; | |
19678 | } | |
19679 | } | |
19680 | ||
10d06d82 TT |
19681 | /* For Ada, if both the name and the linkage name appear, we prefer |
19682 | the latter. This lets "catch exception" work better, regardless | |
19683 | of the order in which the name and linkage name were emitted. | |
19684 | Really, though, this is just a workaround for the fact that gdb | |
19685 | doesn't store both the name and the linkage name. */ | |
19686 | if (cu->language == language_ada && linkage_name != nullptr) | |
7d00ffec | 19687 | raw_name = linkage_name; |
10d06d82 | 19688 | |
91da1414 | 19689 | if (high_pc_relative) |
48fbe735 | 19690 | highpc += lowpc; |
91da1414 | 19691 | |
9373cf26 JK |
19692 | if (has_low_pc_attr && has_high_pc_attr) |
19693 | { | |
19694 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
19695 | eliminate duplicate copies of functions and vtables and such. | |
19696 | The linker will arbitrarily choose one and discard the others. | |
19697 | The AT_*_pc values for such functions refer to local labels in | |
19698 | these sections. If the section from that file was discarded, the | |
19699 | labels are not in the output, so the relocs get a value of 0. | |
19700 | If this is a discarded function, mark the pc bounds as invalid, | |
19701 | so that GDB will ignore it. */ | |
976ca316 | 19702 | if (lowpc == 0 && !per_objfile->per_bfd->has_section_at_zero) |
9373cf26 | 19703 | { |
976ca316 | 19704 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19705 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19706 | |
b98664d3 | 19707 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 19708 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19709 | paddress (gdbarch, lowpc), |
19710 | sect_offset_str (sect_off), | |
9d8780f0 | 19711 | objfile_name (objfile)); |
9373cf26 JK |
19712 | } |
19713 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 19714 | else if (lowpc >= highpc) |
9373cf26 | 19715 | { |
976ca316 | 19716 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19717 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19718 | |
b98664d3 | 19719 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 19720 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19721 | paddress (gdbarch, lowpc), |
19722 | paddress (gdbarch, highpc), | |
19723 | sect_offset_str (sect_off), | |
9c541725 | 19724 | objfile_name (objfile)); |
9373cf26 JK |
19725 | } |
19726 | else | |
48fbe735 | 19727 | has_pc_info = 1; |
9373cf26 | 19728 | } |
85cbf3d3 | 19729 | |
c906108c SS |
19730 | return info_ptr; |
19731 | } | |
19732 | ||
72bf9492 DJ |
19733 | /* Find a cached partial DIE at OFFSET in CU. */ |
19734 | ||
d590ff25 YQ |
19735 | struct partial_die_info * |
19736 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
19737 | { |
19738 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 19739 | struct partial_die_info part_die (sect_off); |
72bf9492 | 19740 | |
9a3c8263 | 19741 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 19742 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 19743 | to_underlying (sect_off))); |
72bf9492 | 19744 | |
72bf9492 DJ |
19745 | return lookup_die; |
19746 | } | |
19747 | ||
348e048f DE |
19748 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
19749 | except in the case of .debug_types DIEs which do not reference | |
19750 | outside their CU (they do however referencing other types via | |
55f1336d | 19751 | DW_FORM_ref_sig8). */ |
72bf9492 | 19752 | |
122cf0f2 | 19753 | static const struct cu_partial_die_info |
9c541725 | 19754 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 19755 | { |
976ca316 SM |
19756 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
19757 | struct objfile *objfile = per_objfile->objfile; | |
5afb4e99 | 19758 | struct partial_die_info *pd = NULL; |
72bf9492 | 19759 | |
36586728 | 19760 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 19761 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 19762 | { |
d590ff25 | 19763 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 19764 | if (pd != NULL) |
fb816e8b | 19765 | return { cu, pd }; |
0d99eb77 DE |
19766 | /* We missed recording what we needed. |
19767 | Load all dies and try again. */ | |
5afb4e99 | 19768 | } |
0d99eb77 DE |
19769 | else |
19770 | { | |
19771 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 19772 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 19773 | { |
9d8780f0 SM |
19774 | error (_("Dwarf Error: Type Unit at offset %s contains" |
19775 | " external reference to offset %s [in module %s].\n"), | |
19776 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
19777 | bfd_get_filename (objfile->obfd)); |
19778 | } | |
7188ed02 SM |
19779 | dwarf2_per_cu_data *per_cu |
19780 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
976ca316 | 19781 | per_objfile); |
72bf9492 | 19782 | |
976ca316 | 19783 | cu = per_objfile->get_cu (per_cu); |
7188ed02 | 19784 | if (cu == NULL || cu->partial_dies == NULL) |
976ca316 | 19785 | load_partial_comp_unit (per_cu, per_objfile, nullptr); |
ae038cb0 | 19786 | |
976ca316 | 19787 | cu = per_objfile->get_cu (per_cu); |
7188ed02 SM |
19788 | |
19789 | cu->last_used = 0; | |
19790 | pd = cu->find_partial_die (sect_off); | |
0d99eb77 | 19791 | } |
5afb4e99 | 19792 | |
dee91e82 DE |
19793 | /* If we didn't find it, and not all dies have been loaded, |
19794 | load them all and try again. */ | |
19795 | ||
7188ed02 | 19796 | if (pd == NULL && cu->per_cu->load_all_dies == 0) |
5afb4e99 | 19797 | { |
7188ed02 | 19798 | cu->per_cu->load_all_dies = 1; |
fd820528 DE |
19799 | |
19800 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
19801 | THIS_CU->cu may already be in use. So we can't just free it and | |
19802 | replace its DIEs with the ones we read in. Instead, we leave those | |
19803 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
19804 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
19805 | set. */ | |
976ca316 | 19806 | load_partial_comp_unit (cu->per_cu, per_objfile, cu); |
5afb4e99 | 19807 | |
7188ed02 | 19808 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
19809 | } |
19810 | ||
19811 | if (pd == NULL) | |
521894aa | 19812 | error (_("Dwarf Error: Cannot not find DIE at %s [from module %s]\n"), |
9d8780f0 | 19813 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
7188ed02 | 19814 | return { cu, pd }; |
72bf9492 DJ |
19815 | } |
19816 | ||
abc72ce4 DE |
19817 | /* See if we can figure out if the class lives in a namespace. We do |
19818 | this by looking for a member function; its demangled name will | |
19819 | contain namespace info, if there is any. */ | |
19820 | ||
19821 | static void | |
19822 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
19823 | struct dwarf2_cu *cu) | |
19824 | { | |
19825 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
19826 | what template types look like, because the demangler | |
19827 | frequently doesn't give the same name as the debug info. We | |
19828 | could fix this by only using the demangled name to get the | |
19829 | prefix (but see comment in read_structure_type). */ | |
19830 | ||
19831 | struct partial_die_info *real_pdi; | |
19832 | struct partial_die_info *child_pdi; | |
19833 | ||
19834 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
19835 | we should not do this. We'll prepend the parent's fully qualified | |
19836 | name when we create the partial symbol. */ | |
19837 | ||
19838 | real_pdi = struct_pdi; | |
19839 | while (real_pdi->has_specification) | |
fb816e8b | 19840 | { |
122cf0f2 AB |
19841 | auto res = find_partial_die (real_pdi->spec_offset, |
19842 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
19843 | real_pdi = res.pdi; |
19844 | cu = res.cu; | |
19845 | } | |
abc72ce4 DE |
19846 | |
19847 | if (real_pdi->die_parent != NULL) | |
19848 | return; | |
19849 | ||
19850 | for (child_pdi = struct_pdi->die_child; | |
19851 | child_pdi != NULL; | |
19852 | child_pdi = child_pdi->die_sibling) | |
19853 | { | |
19854 | if (child_pdi->tag == DW_TAG_subprogram | |
19855 | && child_pdi->linkage_name != NULL) | |
19856 | { | |
43816ebc | 19857 | gdb::unique_xmalloc_ptr<char> actual_class_name |
eff93b4d AB |
19858 | (cu->language_defn->class_name_from_physname |
19859 | (child_pdi->linkage_name)); | |
abc72ce4 DE |
19860 | if (actual_class_name != NULL) |
19861 | { | |
5e22e966 | 19862 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
19863 | struct_pdi->raw_name = objfile->intern (actual_class_name.get ()); |
19864 | struct_pdi->canonical_name = 1; | |
abc72ce4 DE |
19865 | } |
19866 | break; | |
19867 | } | |
19868 | } | |
19869 | } | |
19870 | ||
25c11aca TV |
19871 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
19872 | attribute. */ | |
19873 | ||
19874 | static bool | |
19875 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
19876 | { | |
19877 | switch (tag) | |
19878 | { | |
19879 | case DW_TAG_constant: | |
19880 | case DW_TAG_enumerator: | |
19881 | case DW_TAG_formal_parameter: | |
19882 | case DW_TAG_template_value_param: | |
19883 | case DW_TAG_variable: | |
19884 | return true; | |
19885 | } | |
19886 | ||
19887 | return false; | |
19888 | } | |
19889 | ||
52356b79 YQ |
19890 | void |
19891 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 19892 | { |
abc72ce4 DE |
19893 | /* Once we've fixed up a die, there's no point in doing so again. |
19894 | This also avoids a memory leak if we were to call | |
19895 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 19896 | if (fixup_called) |
abc72ce4 DE |
19897 | return; |
19898 | ||
72bf9492 DJ |
19899 | /* If we found a reference attribute and the DIE has no name, try |
19900 | to find a name in the referred to DIE. */ | |
19901 | ||
7d00ffec | 19902 | if (raw_name == NULL && has_specification) |
72bf9492 DJ |
19903 | { |
19904 | struct partial_die_info *spec_die; | |
72bf9492 | 19905 | |
122cf0f2 | 19906 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
19907 | spec_die = res.pdi; |
19908 | cu = res.cu; | |
72bf9492 | 19909 | |
52356b79 | 19910 | spec_die->fixup (cu); |
72bf9492 | 19911 | |
7d00ffec | 19912 | if (spec_die->raw_name) |
72bf9492 | 19913 | { |
7d00ffec TT |
19914 | raw_name = spec_die->raw_name; |
19915 | canonical_name = spec_die->canonical_name; | |
72bf9492 DJ |
19916 | |
19917 | /* Copy DW_AT_external attribute if it is set. */ | |
19918 | if (spec_die->is_external) | |
52356b79 | 19919 | is_external = spec_die->is_external; |
72bf9492 DJ |
19920 | } |
19921 | } | |
19922 | ||
25c11aca TV |
19923 | if (!has_const_value && has_specification |
19924 | && can_have_DW_AT_const_value_p (tag)) | |
19925 | { | |
19926 | struct partial_die_info *spec_die; | |
19927 | ||
19928 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
19929 | spec_die = res.pdi; | |
19930 | cu = res.cu; | |
19931 | ||
19932 | spec_die->fixup (cu); | |
19933 | ||
19934 | if (spec_die->has_const_value) | |
19935 | { | |
19936 | /* Copy DW_AT_const_value attribute if it is set. */ | |
19937 | has_const_value = spec_die->has_const_value; | |
19938 | } | |
19939 | } | |
19940 | ||
72bf9492 | 19941 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 19942 | |
7d00ffec TT |
19943 | if (raw_name == NULL && tag == DW_TAG_namespace) |
19944 | { | |
19945 | raw_name = CP_ANONYMOUS_NAMESPACE_STR; | |
19946 | canonical_name = 1; | |
19947 | } | |
72bf9492 | 19948 | |
abc72ce4 DE |
19949 | /* If there is no parent die to provide a namespace, and there are |
19950 | children, see if we can determine the namespace from their linkage | |
122d1940 | 19951 | name. */ |
abc72ce4 | 19952 | if (cu->language == language_cplus |
5e22e966 | 19953 | && !cu->per_objfile->per_bfd->types.empty () |
52356b79 YQ |
19954 | && die_parent == NULL |
19955 | && has_children | |
19956 | && (tag == DW_TAG_class_type | |
19957 | || tag == DW_TAG_structure_type | |
19958 | || tag == DW_TAG_union_type)) | |
19959 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 19960 | |
53832f31 TT |
19961 | /* GCC might emit a nameless struct or union that has a linkage |
19962 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
7d00ffec | 19963 | if (raw_name == NULL |
52356b79 YQ |
19964 | && (tag == DW_TAG_class_type |
19965 | || tag == DW_TAG_interface_type | |
19966 | || tag == DW_TAG_structure_type | |
19967 | || tag == DW_TAG_union_type) | |
19968 | && linkage_name != NULL) | |
53832f31 | 19969 | { |
43816ebc TT |
19970 | gdb::unique_xmalloc_ptr<char> demangled |
19971 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
19972 | if (demangled != nullptr) | |
53832f31 | 19973 | { |
96408a79 SA |
19974 | const char *base; |
19975 | ||
19976 | /* Strip any leading namespaces/classes, keep only the base name. | |
19977 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
19978 | base = strrchr (demangled.get (), ':'); |
19979 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
19980 | base++; |
19981 | else | |
43816ebc | 19982 | base = demangled.get (); |
96408a79 | 19983 | |
5e22e966 | 19984 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
19985 | raw_name = objfile->intern (base); |
19986 | canonical_name = 1; | |
53832f31 TT |
19987 | } |
19988 | } | |
19989 | ||
52356b79 | 19990 | fixup_called = 1; |
72bf9492 DJ |
19991 | } |
19992 | ||
d0ce17d8 CT |
19993 | /* Read the .debug_loclists or .debug_rnglists header (they are the same format) |
19994 | contents from the given SECTION in the HEADER. */ | |
41144253 | 19995 | static void |
d0ce17d8 CT |
19996 | read_loclists_rnglists_header (struct loclists_rnglists_header *header, |
19997 | struct dwarf2_section_info *section) | |
41144253 | 19998 | { |
19999 | unsigned int bytes_read; | |
20000 | bfd *abfd = section->get_bfd_owner (); | |
20001 | const gdb_byte *info_ptr = section->buffer; | |
20002 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
20003 | info_ptr += bytes_read; | |
20004 | header->version = read_2_bytes (abfd, info_ptr); | |
20005 | info_ptr += 2; | |
20006 | header->addr_size = read_1_byte (abfd, info_ptr); | |
20007 | info_ptr += 1; | |
20008 | header->segment_collector_size = read_1_byte (abfd, info_ptr); | |
20009 | info_ptr += 1; | |
20010 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); | |
20011 | } | |
20012 | ||
20013 | /* Return the DW_AT_loclists_base value for the CU. */ | |
20014 | static ULONGEST | |
20015 | lookup_loclist_base (struct dwarf2_cu *cu) | |
20016 | { | |
20017 | /* For the .dwo unit, the loclist_base points to the first offset following | |
20018 | the header. The header consists of the following entities- | |
20019 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
20020 | bit format) | |
20021 | 2. version (2 bytes) | |
20022 | 3. address size (1 byte) | |
20023 | 4. segment selector size (1 byte) | |
20024 | 5. offset entry count (4 bytes) | |
20025 | These sizes are derived as per the DWARFv5 standard. */ | |
20026 | if (cu->dwo_unit != nullptr) | |
20027 | { | |
20028 | if (cu->header.initial_length_size == 4) | |
20029 | return LOCLIST_HEADER_SIZE32; | |
20030 | return LOCLIST_HEADER_SIZE64; | |
20031 | } | |
20032 | return cu->loclist_base; | |
20033 | } | |
20034 | ||
20035 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
20036 | array of offsets in the .debug_loclists section. */ | |
20037 | static CORE_ADDR | |
20038 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) | |
20039 | { | |
976ca316 SM |
20040 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20041 | struct objfile *objfile = per_objfile->objfile; | |
41144253 | 20042 | bfd *abfd = objfile->obfd; |
20043 | ULONGEST loclist_base = lookup_loclist_base (cu); | |
20044 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); | |
20045 | ||
20046 | section->read (objfile); | |
20047 | if (section->buffer == NULL) | |
20048 | complaint (_("DW_FORM_loclistx used without .debug_loclists " | |
dda83cd7 | 20049 | "section [in module %s]"), objfile_name (objfile)); |
d0ce17d8 CT |
20050 | struct loclists_rnglists_header header; |
20051 | read_loclists_rnglists_header (&header, section); | |
41144253 | 20052 | if (loclist_index >= header.offset_entry_count) |
20053 | complaint (_("DW_FORM_loclistx pointing outside of " | |
dda83cd7 SM |
20054 | ".debug_loclists offset array [in module %s]"), |
20055 | objfile_name (objfile)); | |
41144253 | 20056 | if (loclist_base + loclist_index * cu->header.offset_size |
20057 | >= section->size) | |
20058 | complaint (_("DW_FORM_loclistx pointing outside of " | |
dda83cd7 SM |
20059 | ".debug_loclists section [in module %s]"), |
20060 | objfile_name (objfile)); | |
41144253 | 20061 | const gdb_byte *info_ptr |
20062 | = section->buffer + loclist_base + loclist_index * cu->header.offset_size; | |
20063 | ||
20064 | if (cu->header.offset_size == 4) | |
20065 | return bfd_get_32 (abfd, info_ptr) + loclist_base; | |
20066 | else | |
20067 | return bfd_get_64 (abfd, info_ptr) + loclist_base; | |
20068 | } | |
20069 | ||
d0ce17d8 CT |
20070 | /* Given a DW_FORM_rnglistx value RNGLIST_INDEX, fetch the offset from the |
20071 | array of offsets in the .debug_rnglists section. */ | |
20072 | static CORE_ADDR | |
20073 | read_rnglist_index (struct dwarf2_cu *cu, ULONGEST rnglist_index, | |
20074 | dwarf_tag tag) | |
20075 | { | |
20076 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
20077 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
20078 | bfd *abfd = objfile->obfd; | |
20079 | ULONGEST rnglist_header_size = | |
20080 | (cu->header.initial_length_size == 4 ? RNGLIST_HEADER_SIZE32 | |
20081 | : RNGLIST_HEADER_SIZE64); | |
20082 | ULONGEST rnglist_base = | |
20083 | (cu->dwo_unit != nullptr) ? rnglist_header_size : cu->ranges_base; | |
20084 | ULONGEST start_offset = | |
20085 | rnglist_base + rnglist_index * cu->header.offset_size; | |
20086 | ||
20087 | /* Get rnglists section. */ | |
20088 | struct dwarf2_section_info *section = cu_debug_rnglists_section (cu, tag); | |
20089 | ||
20090 | /* Read the rnglists section content. */ | |
20091 | section->read (objfile); | |
20092 | if (section->buffer == nullptr) | |
20093 | error (_("DW_FORM_rnglistx used without .debug_rnglists section " | |
20094 | "[in module %s]"), | |
20095 | objfile_name (objfile)); | |
20096 | ||
20097 | /* Verify the rnglist index is valid. */ | |
20098 | struct loclists_rnglists_header header; | |
20099 | read_loclists_rnglists_header (&header, section); | |
20100 | if (rnglist_index >= header.offset_entry_count) | |
20101 | error (_("DW_FORM_rnglistx index pointing outside of " | |
20102 | ".debug_rnglists offset array [in module %s]"), | |
20103 | objfile_name (objfile)); | |
20104 | ||
20105 | /* Validate that the offset is within the section's range. */ | |
20106 | if (start_offset >= section->size) | |
20107 | error (_("DW_FORM_rnglistx pointing outside of " | |
dda83cd7 | 20108 | ".debug_rnglists section [in module %s]"), |
d0ce17d8 CT |
20109 | objfile_name (objfile)); |
20110 | ||
20111 | /* Validate that reading won't go beyond the end of the section. */ | |
20112 | if (start_offset + cu->header.offset_size > rnglist_base + section->size) | |
20113 | error (_("Reading DW_FORM_rnglistx index beyond end of" | |
20114 | ".debug_rnglists section [in module %s]"), | |
20115 | objfile_name (objfile)); | |
20116 | ||
20117 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
20118 | ||
20119 | if (cu->header.offset_size == 4) | |
20120 | return read_4_bytes (abfd, info_ptr) + rnglist_base; | |
20121 | else | |
20122 | return read_8_bytes (abfd, info_ptr) + rnglist_base; | |
20123 | } | |
20124 | ||
18a8505e AT |
20125 | /* Process the attributes that had to be skipped in the first round. These |
20126 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
20127 | They could not have been processed in the first round, because at the time | |
20128 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
20129 | static void |
20130 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 20131 | struct attribute *attr, dwarf_tag tag) |
18a8505e AT |
20132 | { |
20133 | struct dwarf2_cu *cu = reader->cu; | |
20134 | switch (attr->form) | |
20135 | { | |
20136 | case DW_FORM_addrx: | |
20137 | case DW_FORM_GNU_addr_index: | |
36d378cf TT |
20138 | attr->set_address (read_addr_index (cu, |
20139 | attr->as_unsigned_reprocess ())); | |
dda83cd7 | 20140 | break; |
41144253 | 20141 | case DW_FORM_loclistx: |
529908cb | 20142 | attr->set_address (read_loclist_index (cu, attr->as_unsigned ())); |
41144253 | 20143 | break; |
d0ce17d8 | 20144 | case DW_FORM_rnglistx: |
529908cb | 20145 | attr->set_address (read_rnglist_index (cu, attr->as_unsigned (), tag)); |
dda83cd7 | 20146 | break; |
18a8505e AT |
20147 | case DW_FORM_strx: |
20148 | case DW_FORM_strx1: | |
20149 | case DW_FORM_strx2: | |
20150 | case DW_FORM_strx3: | |
20151 | case DW_FORM_strx4: | |
20152 | case DW_FORM_GNU_str_index: | |
20153 | { | |
fe56917a | 20154 | unsigned int str_index = attr->as_unsigned_reprocess (); |
c6481205 | 20155 | gdb_assert (!attr->canonical_string_p ()); |
18a8505e | 20156 | if (reader->dwo_file != NULL) |
c6481205 TT |
20157 | attr->set_string_noncanonical (read_dwo_str_index (reader, |
20158 | str_index)); | |
18a8505e | 20159 | else |
c6481205 TT |
20160 | attr->set_string_noncanonical (read_stub_str_index (cu, |
20161 | str_index)); | |
18a8505e AT |
20162 | break; |
20163 | } | |
20164 | default: | |
20165 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
20166 | } | |
20167 | } | |
20168 | ||
a8329558 | 20169 | /* Read an attribute value described by an attribute form. */ |
c906108c | 20170 | |
d521ce57 | 20171 | static const gdb_byte * |
dee91e82 DE |
20172 | read_attribute_value (const struct die_reader_specs *reader, |
20173 | struct attribute *attr, unsigned form, | |
7a5f294d | 20174 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 20175 | { |
dee91e82 | 20176 | struct dwarf2_cu *cu = reader->cu; |
976ca316 SM |
20177 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20178 | struct objfile *objfile = per_objfile->objfile; | |
dee91e82 | 20179 | bfd *abfd = reader->abfd; |
e7c27a73 | 20180 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
20181 | unsigned int bytes_read; |
20182 | struct dwarf_block *blk; | |
20183 | ||
aead7601 | 20184 | attr->form = (enum dwarf_form) form; |
a8329558 | 20185 | switch (form) |
c906108c | 20186 | { |
c906108c | 20187 | case DW_FORM_ref_addr: |
ae411497 | 20188 | if (cu->header.version == 2) |
414ad644 TT |
20189 | attr->set_unsigned (cu->header.read_address (abfd, info_ptr, |
20190 | &bytes_read)); | |
ae411497 | 20191 | else |
414ad644 TT |
20192 | attr->set_unsigned (cu->header.read_offset (abfd, info_ptr, |
20193 | &bytes_read)); | |
ae411497 TT |
20194 | info_ptr += bytes_read; |
20195 | break; | |
36586728 | 20196 | case DW_FORM_GNU_ref_alt: |
414ad644 TT |
20197 | attr->set_unsigned (cu->header.read_offset (abfd, info_ptr, |
20198 | &bytes_read)); | |
36586728 TT |
20199 | info_ptr += bytes_read; |
20200 | break; | |
ae411497 | 20201 | case DW_FORM_addr: |
08feed99 TT |
20202 | { |
20203 | struct gdbarch *gdbarch = objfile->arch (); | |
36d378cf TT |
20204 | CORE_ADDR addr = cu->header.read_address (abfd, info_ptr, &bytes_read); |
20205 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr); | |
20206 | attr->set_address (addr); | |
08feed99 TT |
20207 | info_ptr += bytes_read; |
20208 | } | |
c906108c SS |
20209 | break; |
20210 | case DW_FORM_block2: | |
7b5a2f43 | 20211 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20212 | blk->size = read_2_bytes (abfd, info_ptr); |
20213 | info_ptr += 2; | |
20214 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20215 | info_ptr += blk->size; | |
9d2246fc | 20216 | attr->set_block (blk); |
c906108c SS |
20217 | break; |
20218 | case DW_FORM_block4: | |
7b5a2f43 | 20219 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20220 | blk->size = read_4_bytes (abfd, info_ptr); |
20221 | info_ptr += 4; | |
20222 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20223 | info_ptr += blk->size; | |
9d2246fc | 20224 | attr->set_block (blk); |
c906108c SS |
20225 | break; |
20226 | case DW_FORM_data2: | |
414ad644 | 20227 | attr->set_unsigned (read_2_bytes (abfd, info_ptr)); |
c906108c SS |
20228 | info_ptr += 2; |
20229 | break; | |
20230 | case DW_FORM_data4: | |
414ad644 | 20231 | attr->set_unsigned (read_4_bytes (abfd, info_ptr)); |
c906108c SS |
20232 | info_ptr += 4; |
20233 | break; | |
20234 | case DW_FORM_data8: | |
414ad644 | 20235 | attr->set_unsigned (read_8_bytes (abfd, info_ptr)); |
c906108c SS |
20236 | info_ptr += 8; |
20237 | break; | |
0224619f JK |
20238 | case DW_FORM_data16: |
20239 | blk = dwarf_alloc_block (cu); | |
20240 | blk->size = 16; | |
20241 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
20242 | info_ptr += 16; | |
9d2246fc | 20243 | attr->set_block (blk); |
0224619f | 20244 | break; |
2dc7f7b3 | 20245 | case DW_FORM_sec_offset: |
414ad644 TT |
20246 | attr->set_unsigned (cu->header.read_offset (abfd, info_ptr, |
20247 | &bytes_read)); | |
2dc7f7b3 TT |
20248 | info_ptr += bytes_read; |
20249 | break; | |
41144253 | 20250 | case DW_FORM_loclistx: |
20251 | { | |
7a5f294d TT |
20252 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20253 | &bytes_read)); | |
20254 | info_ptr += bytes_read; | |
41144253 | 20255 | } |
20256 | break; | |
c906108c | 20257 | case DW_FORM_string: |
c6481205 TT |
20258 | attr->set_string_noncanonical (read_direct_string (abfd, info_ptr, |
20259 | &bytes_read)); | |
c906108c SS |
20260 | info_ptr += bytes_read; |
20261 | break; | |
4bdf3d34 | 20262 | case DW_FORM_strp: |
36586728 TT |
20263 | if (!cu->per_cu->is_dwz) |
20264 | { | |
c6481205 TT |
20265 | attr->set_string_noncanonical |
20266 | (read_indirect_string (per_objfile, | |
20267 | abfd, info_ptr, cu_header, | |
20268 | &bytes_read)); | |
36586728 TT |
20269 | info_ptr += bytes_read; |
20270 | break; | |
20271 | } | |
20272 | /* FALLTHROUGH */ | |
43988095 JK |
20273 | case DW_FORM_line_strp: |
20274 | if (!cu->per_cu->is_dwz) | |
20275 | { | |
c6481205 TT |
20276 | attr->set_string_noncanonical |
20277 | (per_objfile->read_line_string (info_ptr, cu_header, | |
20278 | &bytes_read)); | |
43988095 JK |
20279 | info_ptr += bytes_read; |
20280 | break; | |
20281 | } | |
20282 | /* FALLTHROUGH */ | |
36586728 TT |
20283 | case DW_FORM_GNU_strp_alt: |
20284 | { | |
976ca316 | 20285 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
8266302d TT |
20286 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
20287 | &bytes_read); | |
36586728 | 20288 | |
c6481205 TT |
20289 | attr->set_string_noncanonical |
20290 | (dwz->read_string (objfile, str_offset)); | |
36586728 TT |
20291 | info_ptr += bytes_read; |
20292 | } | |
4bdf3d34 | 20293 | break; |
2dc7f7b3 | 20294 | case DW_FORM_exprloc: |
c906108c | 20295 | case DW_FORM_block: |
7b5a2f43 | 20296 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20297 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20298 | info_ptr += bytes_read; | |
20299 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20300 | info_ptr += blk->size; | |
9d2246fc | 20301 | attr->set_block (blk); |
c906108c SS |
20302 | break; |
20303 | case DW_FORM_block1: | |
7b5a2f43 | 20304 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20305 | blk->size = read_1_byte (abfd, info_ptr); |
20306 | info_ptr += 1; | |
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_data1: | |
c906108c | 20312 | case DW_FORM_flag: |
414ad644 | 20313 | attr->set_unsigned (read_1_byte (abfd, info_ptr)); |
c906108c SS |
20314 | info_ptr += 1; |
20315 | break; | |
2dc7f7b3 | 20316 | case DW_FORM_flag_present: |
414ad644 | 20317 | attr->set_unsigned (1); |
2dc7f7b3 | 20318 | break; |
c906108c | 20319 | case DW_FORM_sdata: |
1bc397c5 | 20320 | attr->set_signed (read_signed_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20321 | info_ptr += bytes_read; |
20322 | break; | |
18a8505e | 20323 | case DW_FORM_rnglistx: |
7a5f294d TT |
20324 | { |
20325 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, | |
20326 | &bytes_read)); | |
20327 | info_ptr += bytes_read; | |
20328 | } | |
20329 | break; | |
d0ce17d8 | 20330 | case DW_FORM_udata: |
414ad644 | 20331 | attr->set_unsigned (read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20332 | info_ptr += bytes_read; |
20333 | break; | |
20334 | case DW_FORM_ref1: | |
414ad644 TT |
20335 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20336 | + read_1_byte (abfd, info_ptr))); | |
c906108c SS |
20337 | info_ptr += 1; |
20338 | break; | |
20339 | case DW_FORM_ref2: | |
414ad644 TT |
20340 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20341 | + read_2_bytes (abfd, info_ptr))); | |
c906108c SS |
20342 | info_ptr += 2; |
20343 | break; | |
20344 | case DW_FORM_ref4: | |
414ad644 TT |
20345 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20346 | + read_4_bytes (abfd, info_ptr))); | |
c906108c SS |
20347 | info_ptr += 4; |
20348 | break; | |
613e1657 | 20349 | case DW_FORM_ref8: |
414ad644 TT |
20350 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20351 | + read_8_bytes (abfd, info_ptr))); | |
613e1657 KB |
20352 | info_ptr += 8; |
20353 | break; | |
55f1336d | 20354 | case DW_FORM_ref_sig8: |
630ed6b9 | 20355 | attr->set_signature (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
20356 | info_ptr += 8; |
20357 | break; | |
c906108c | 20358 | case DW_FORM_ref_udata: |
414ad644 TT |
20359 | attr->set_unsigned ((to_underlying (cu->header.sect_off) |
20360 | + read_unsigned_leb128 (abfd, info_ptr, | |
20361 | &bytes_read))); | |
c906108c SS |
20362 | info_ptr += bytes_read; |
20363 | break; | |
c906108c | 20364 | case DW_FORM_indirect: |
a8329558 KW |
20365 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20366 | info_ptr += bytes_read; | |
43988095 JK |
20367 | if (form == DW_FORM_implicit_const) |
20368 | { | |
20369 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
20370 | info_ptr += bytes_read; | |
20371 | } | |
20372 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
7a5f294d | 20373 | info_ptr); |
43988095 JK |
20374 | break; |
20375 | case DW_FORM_implicit_const: | |
1bc397c5 | 20376 | attr->set_signed (implicit_const); |
a8329558 | 20377 | break; |
336d760d | 20378 | case DW_FORM_addrx: |
3019eac3 | 20379 | case DW_FORM_GNU_addr_index: |
fe56917a TT |
20380 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20381 | &bytes_read)); | |
3019eac3 DE |
20382 | info_ptr += bytes_read; |
20383 | break; | |
cf532bd1 | 20384 | case DW_FORM_strx: |
15f18d14 AT |
20385 | case DW_FORM_strx1: |
20386 | case DW_FORM_strx2: | |
20387 | case DW_FORM_strx3: | |
20388 | case DW_FORM_strx4: | |
3019eac3 | 20389 | case DW_FORM_GNU_str_index: |
3019eac3 | 20390 | { |
15f18d14 AT |
20391 | ULONGEST str_index; |
20392 | if (form == DW_FORM_strx1) | |
20393 | { | |
20394 | str_index = read_1_byte (abfd, info_ptr); | |
20395 | info_ptr += 1; | |
20396 | } | |
20397 | else if (form == DW_FORM_strx2) | |
20398 | { | |
20399 | str_index = read_2_bytes (abfd, info_ptr); | |
20400 | info_ptr += 2; | |
20401 | } | |
20402 | else if (form == DW_FORM_strx3) | |
20403 | { | |
20404 | str_index = read_3_bytes (abfd, info_ptr); | |
20405 | info_ptr += 3; | |
20406 | } | |
20407 | else if (form == DW_FORM_strx4) | |
20408 | { | |
20409 | str_index = read_4_bytes (abfd, info_ptr); | |
20410 | info_ptr += 4; | |
20411 | } | |
20412 | else | |
20413 | { | |
20414 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
20415 | info_ptr += bytes_read; | |
20416 | } | |
fe56917a | 20417 | attr->set_unsigned_reprocess (str_index); |
7a5f294d | 20418 | } |
3019eac3 | 20419 | break; |
c906108c | 20420 | default: |
8a3fe4f8 | 20421 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
20422 | dwarf_form_name (form), |
20423 | bfd_get_filename (abfd)); | |
c906108c | 20424 | } |
28e94949 | 20425 | |
36586728 | 20426 | /* Super hack. */ |
cd6c91b4 | 20427 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
20428 | attr->form = DW_FORM_GNU_ref_alt; |
20429 | ||
28e94949 JB |
20430 | /* We have seen instances where the compiler tried to emit a byte |
20431 | size attribute of -1 which ended up being encoded as an unsigned | |
20432 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
20433 | an object of this size seems pretty unlikely so we can relatively | |
20434 | safely treat these cases as if the size attribute was invalid and | |
20435 | treat them as zero by default. */ | |
20436 | if (attr->name == DW_AT_byte_size | |
20437 | && form == DW_FORM_data4 | |
529908cb | 20438 | && attr->as_unsigned () >= 0xffffffff) |
01c66ae6 JB |
20439 | { |
20440 | complaint | |
dda83cd7 SM |
20441 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
20442 | hex_string (attr->as_unsigned ())); | |
414ad644 | 20443 | attr->set_unsigned (0); |
01c66ae6 | 20444 | } |
28e94949 | 20445 | |
c906108c SS |
20446 | return info_ptr; |
20447 | } | |
20448 | ||
a8329558 KW |
20449 | /* Read an attribute described by an abbreviated attribute. */ |
20450 | ||
d521ce57 | 20451 | static const gdb_byte * |
dee91e82 DE |
20452 | read_attribute (const struct die_reader_specs *reader, |
20453 | struct attribute *attr, struct attr_abbrev *abbrev, | |
7a5f294d | 20454 | const gdb_byte *info_ptr) |
a8329558 KW |
20455 | { |
20456 | attr->name = abbrev->name; | |
c6481205 | 20457 | attr->string_is_canonical = 0; |
fe56917a | 20458 | attr->requires_reprocessing = 0; |
43988095 | 20459 | return read_attribute_value (reader, attr, abbrev->form, |
7a5f294d | 20460 | abbrev->implicit_const, info_ptr); |
a8329558 KW |
20461 | } |
20462 | ||
43988095 JK |
20463 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
20464 | ||
20465 | static const char * | |
976ca316 | 20466 | read_indirect_string_at_offset (dwarf2_per_objfile *per_objfile, |
4f44ae6c | 20467 | LONGEST str_offset) |
43988095 | 20468 | { |
976ca316 SM |
20469 | return per_objfile->per_bfd->str.read_string (per_objfile->objfile, |
20470 | str_offset, "DW_FORM_strp"); | |
c906108c SS |
20471 | } |
20472 | ||
43988095 JK |
20473 | /* Return pointer to string at .debug_str offset as read from BUF. |
20474 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
20475 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
20476 | ||
d521ce57 | 20477 | static const char * |
976ca316 | 20478 | read_indirect_string (dwarf2_per_objfile *per_objfile, bfd *abfd, |
ed2dc618 | 20479 | const gdb_byte *buf, |
cf2c3c16 TT |
20480 | const struct comp_unit_head *cu_header, |
20481 | unsigned int *bytes_read_ptr) | |
20482 | { | |
8266302d | 20483 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 20484 | |
976ca316 | 20485 | return read_indirect_string_at_offset (per_objfile, str_offset); |
cf2c3c16 TT |
20486 | } |
20487 | ||
86c0bb4c | 20488 | /* See read.h. */ |
43988095 | 20489 | |
86c0bb4c TT |
20490 | const char * |
20491 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
5989a64e SM |
20492 | const struct comp_unit_head *cu_header, |
20493 | unsigned int *bytes_read_ptr) | |
43988095 | 20494 | { |
86c0bb4c | 20495 | bfd *abfd = objfile->obfd; |
8266302d | 20496 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 20497 | |
5989a64e | 20498 | return per_bfd->line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
20499 | } |
20500 | ||
3019eac3 | 20501 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 20502 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
20503 | ADDR_SIZE is the size of addresses from the CU header. */ |
20504 | ||
20505 | static CORE_ADDR | |
976ca316 SM |
20506 | read_addr_index_1 (dwarf2_per_objfile *per_objfile, unsigned int addr_index, |
20507 | gdb::optional<ULONGEST> addr_base, int addr_size) | |
3019eac3 | 20508 | { |
976ca316 | 20509 | struct objfile *objfile = per_objfile->objfile; |
3019eac3 DE |
20510 | bfd *abfd = objfile->obfd; |
20511 | const gdb_byte *info_ptr; | |
18a8505e | 20512 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 20513 | |
976ca316 SM |
20514 | per_objfile->per_bfd->addr.read (objfile); |
20515 | if (per_objfile->per_bfd->addr.buffer == NULL) | |
3019eac3 | 20516 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), |
4262abfb | 20517 | objfile_name (objfile)); |
18a8505e | 20518 | if (addr_base_or_zero + addr_index * addr_size |
976ca316 | 20519 | >= per_objfile->per_bfd->addr.size) |
3019eac3 DE |
20520 | error (_("DW_FORM_addr_index pointing outside of " |
20521 | ".debug_addr section [in module %s]"), | |
4262abfb | 20522 | objfile_name (objfile)); |
976ca316 SM |
20523 | info_ptr = (per_objfile->per_bfd->addr.buffer + addr_base_or_zero |
20524 | + addr_index * addr_size); | |
3019eac3 DE |
20525 | if (addr_size == 4) |
20526 | return bfd_get_32 (abfd, info_ptr); | |
20527 | else | |
20528 | return bfd_get_64 (abfd, info_ptr); | |
20529 | } | |
20530 | ||
20531 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
20532 | ||
20533 | static CORE_ADDR | |
20534 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
20535 | { | |
5e22e966 | 20536 | return read_addr_index_1 (cu->per_objfile, addr_index, |
518817b3 | 20537 | cu->addr_base, cu->header.addr_size); |
3019eac3 DE |
20538 | } |
20539 | ||
20540 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
20541 | ||
20542 | static CORE_ADDR | |
d521ce57 | 20543 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
20544 | unsigned int *bytes_read) |
20545 | { | |
5e22e966 | 20546 | bfd *abfd = cu->per_objfile->objfile->obfd; |
3019eac3 DE |
20547 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
20548 | ||
20549 | return read_addr_index (cu, addr_index); | |
20550 | } | |
20551 | ||
450a1bfc | 20552 | /* See read.h. */ |
3019eac3 DE |
20553 | |
20554 | CORE_ADDR | |
82ca3f51 | 20555 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, |
976ca316 | 20556 | dwarf2_per_objfile *per_objfile, |
82ca3f51 | 20557 | unsigned int addr_index) |
3019eac3 | 20558 | { |
976ca316 | 20559 | struct dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
18a8505e | 20560 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
20561 | int addr_size; |
20562 | ||
3019eac3 DE |
20563 | /* We need addr_base and addr_size. |
20564 | If we don't have PER_CU->cu, we have to get it. | |
20565 | Nasty, but the alternative is storing the needed info in PER_CU, | |
20566 | which at this point doesn't seem justified: it's not clear how frequently | |
20567 | it would get used and it would increase the size of every PER_CU. | |
20568 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
20569 | so we're not in uncharted territory here. | |
20570 | Alas we need to be a bit more complicated as addr_base is contained | |
20571 | in the DIE. | |
20572 | ||
20573 | We don't need to read the entire CU(/TU). | |
20574 | We just need the header and top level die. | |
a1b64ce1 | 20575 | |
3019eac3 | 20576 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 20577 | For now we skip this optimization. */ |
3019eac3 DE |
20578 | |
20579 | if (cu != NULL) | |
20580 | { | |
20581 | addr_base = cu->addr_base; | |
20582 | addr_size = cu->header.addr_size; | |
20583 | } | |
20584 | else | |
20585 | { | |
976ca316 | 20586 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
20587 | addr_base = reader.cu->addr_base; |
20588 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
20589 | } |
20590 | ||
976ca316 | 20591 | return read_addr_index_1 (per_objfile, addr_index, addr_base, addr_size); |
3019eac3 DE |
20592 | } |
20593 | ||
18a8505e AT |
20594 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
20595 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
20596 | DWO file. */ | |
3019eac3 | 20597 | |
d521ce57 | 20598 | static const char * |
18a8505e AT |
20599 | read_str_index (struct dwarf2_cu *cu, |
20600 | struct dwarf2_section_info *str_section, | |
20601 | struct dwarf2_section_info *str_offsets_section, | |
20602 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 20603 | { |
976ca316 SM |
20604 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20605 | struct objfile *objfile = per_objfile->objfile; | |
c5164cbc | 20606 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 20607 | bfd *abfd = objfile->obfd; |
d521ce57 | 20608 | const gdb_byte *info_ptr; |
3019eac3 | 20609 | ULONGEST str_offset; |
cf532bd1 | 20610 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 20611 | |
96b79293 TT |
20612 | str_section->read (objfile); |
20613 | str_offsets_section->read (objfile); | |
73869dc2 | 20614 | if (str_section->buffer == NULL) |
18a8505e | 20615 | error (_("%s used without %s section" |
9d8780f0 | 20616 | " in CU at offset %s [in module %s]"), |
96b79293 | 20617 | form_name, str_section->get_name (), |
dda83cd7 | 20618 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20619 | if (str_offsets_section->buffer == NULL) |
18a8505e | 20620 | error (_("%s used without %s section" |
9d8780f0 | 20621 | " in CU at offset %s [in module %s]"), |
96b79293 | 20622 | form_name, str_section->get_name (), |
dda83cd7 | 20623 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20624 | info_ptr = (str_offsets_section->buffer |
18a8505e | 20625 | + str_offsets_base |
3019eac3 DE |
20626 | + str_index * cu->header.offset_size); |
20627 | if (cu->header.offset_size == 4) | |
20628 | str_offset = bfd_get_32 (abfd, info_ptr); | |
20629 | else | |
20630 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 20631 | if (str_offset >= str_section->size) |
57d63ce2 | 20632 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
20633 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
20634 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20635 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
20636 | } |
20637 | ||
18a8505e AT |
20638 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
20639 | ||
20640 | static const char * | |
20641 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
20642 | { | |
20643 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
20644 | ? reader->cu->header.addr_size : 0; | |
20645 | return read_str_index (reader->cu, | |
20646 | &reader->dwo_file->sections.str, | |
20647 | &reader->dwo_file->sections.str_offsets, | |
20648 | str_offsets_base, str_index); | |
20649 | } | |
20650 | ||
20651 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
20652 | ||
20653 | static const char * | |
20654 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
20655 | { | |
5e22e966 | 20656 | struct objfile *objfile = cu->per_objfile->objfile; |
18a8505e AT |
20657 | const char *objf_name = objfile_name (objfile); |
20658 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
20659 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
20660 | ||
20661 | if (!cu->str_offsets_base.has_value ()) | |
20662 | error (_("%s used in Fission stub without %s" | |
20663 | " in CU at offset 0x%lx [in module %s]"), | |
20664 | form_name, str_offsets_attr_name, | |
20665 | (long) cu->header.offset_size, objf_name); | |
20666 | ||
20667 | return read_str_index (cu, | |
5e22e966 SM |
20668 | &cu->per_objfile->per_bfd->str, |
20669 | &cu->per_objfile->per_bfd->str_offsets, | |
18a8505e AT |
20670 | *cu->str_offsets_base, str_index); |
20671 | } | |
20672 | ||
3019eac3 DE |
20673 | /* Return the length of an LEB128 number in BUF. */ |
20674 | ||
20675 | static int | |
20676 | leb128_size (const gdb_byte *buf) | |
20677 | { | |
20678 | const gdb_byte *begin = buf; | |
20679 | gdb_byte byte; | |
20680 | ||
20681 | while (1) | |
20682 | { | |
20683 | byte = *buf++; | |
20684 | if ((byte & 128) == 0) | |
20685 | return buf - begin; | |
20686 | } | |
20687 | } | |
20688 | ||
c906108c | 20689 | static void |
e142c38c | 20690 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
20691 | { |
20692 | switch (lang) | |
20693 | { | |
20694 | case DW_LANG_C89: | |
76bee0cc | 20695 | case DW_LANG_C99: |
0cfd832f | 20696 | case DW_LANG_C11: |
c906108c | 20697 | case DW_LANG_C: |
d1be3247 | 20698 | case DW_LANG_UPC: |
e142c38c | 20699 | cu->language = language_c; |
c906108c | 20700 | break; |
9c37b5ae | 20701 | case DW_LANG_Java: |
c906108c | 20702 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
20703 | case DW_LANG_C_plus_plus_11: |
20704 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 20705 | cu->language = language_cplus; |
c906108c | 20706 | break; |
6aecb9c2 JB |
20707 | case DW_LANG_D: |
20708 | cu->language = language_d; | |
20709 | break; | |
c906108c SS |
20710 | case DW_LANG_Fortran77: |
20711 | case DW_LANG_Fortran90: | |
b21b22e0 | 20712 | case DW_LANG_Fortran95: |
f7de9aab MW |
20713 | case DW_LANG_Fortran03: |
20714 | case DW_LANG_Fortran08: | |
e142c38c | 20715 | cu->language = language_fortran; |
c906108c | 20716 | break; |
a766d390 DE |
20717 | case DW_LANG_Go: |
20718 | cu->language = language_go; | |
20719 | break; | |
c906108c | 20720 | case DW_LANG_Mips_Assembler: |
e142c38c | 20721 | cu->language = language_asm; |
c906108c SS |
20722 | break; |
20723 | case DW_LANG_Ada83: | |
8aaf0b47 | 20724 | case DW_LANG_Ada95: |
bc5f45f8 JB |
20725 | cu->language = language_ada; |
20726 | break; | |
72019c9c GM |
20727 | case DW_LANG_Modula2: |
20728 | cu->language = language_m2; | |
20729 | break; | |
fe8e67fd PM |
20730 | case DW_LANG_Pascal83: |
20731 | cu->language = language_pascal; | |
20732 | break; | |
22566fbd DJ |
20733 | case DW_LANG_ObjC: |
20734 | cu->language = language_objc; | |
20735 | break; | |
c44af4eb TT |
20736 | case DW_LANG_Rust: |
20737 | case DW_LANG_Rust_old: | |
20738 | cu->language = language_rust; | |
20739 | break; | |
c906108c SS |
20740 | case DW_LANG_Cobol74: |
20741 | case DW_LANG_Cobol85: | |
c906108c | 20742 | default: |
e142c38c | 20743 | cu->language = language_minimal; |
c906108c SS |
20744 | break; |
20745 | } | |
e142c38c | 20746 | cu->language_defn = language_def (cu->language); |
c906108c SS |
20747 | } |
20748 | ||
20749 | /* Return the named attribute or NULL if not there. */ | |
20750 | ||
20751 | static struct attribute * | |
e142c38c | 20752 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 20753 | { |
a48e046c | 20754 | for (;;) |
c906108c | 20755 | { |
a48e046c TT |
20756 | unsigned int i; |
20757 | struct attribute *spec = NULL; | |
20758 | ||
20759 | for (i = 0; i < die->num_attrs; ++i) | |
20760 | { | |
20761 | if (die->attrs[i].name == name) | |
20762 | return &die->attrs[i]; | |
20763 | if (die->attrs[i].name == DW_AT_specification | |
20764 | || die->attrs[i].name == DW_AT_abstract_origin) | |
20765 | spec = &die->attrs[i]; | |
20766 | } | |
20767 | ||
20768 | if (!spec) | |
20769 | break; | |
c906108c | 20770 | |
f2f0e013 | 20771 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 20772 | } |
c5aa993b | 20773 | |
c906108c SS |
20774 | return NULL; |
20775 | } | |
20776 | ||
7d45c7c3 KB |
20777 | /* Return the string associated with a string-typed attribute, or NULL if it |
20778 | is either not found or is of an incorrect type. */ | |
20779 | ||
20780 | static const char * | |
20781 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
20782 | { | |
20783 | struct attribute *attr; | |
20784 | const char *str = NULL; | |
20785 | ||
20786 | attr = dwarf2_attr (die, name, cu); | |
20787 | ||
20788 | if (attr != NULL) | |
20789 | { | |
95f982e5 | 20790 | str = attr->as_string (); |
e61108c9 | 20791 | if (str == nullptr) |
dda83cd7 | 20792 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
20793 | "DIE at %s in module %s"), |
20794 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
5e22e966 | 20795 | objfile_name (cu->per_objfile->objfile)); |
7d45c7c3 KB |
20796 | } |
20797 | ||
20798 | return str; | |
20799 | } | |
20800 | ||
a084a2a6 | 20801 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 20802 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
20803 | static const char * |
20804 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
20805 | { | |
20806 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
20807 | if (dwo_name == nullptr) | |
20808 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
20809 | return dwo_name; | |
20810 | } | |
20811 | ||
05cf31d1 JB |
20812 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
20813 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 20814 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
20815 | |
20816 | static int | |
20817 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
20818 | { | |
20819 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
20820 | ||
c45bc3f8 | 20821 | return attr != nullptr && attr->as_boolean (); |
05cf31d1 JB |
20822 | } |
20823 | ||
3ca72b44 | 20824 | static int |
e142c38c | 20825 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 20826 | { |
05cf31d1 JB |
20827 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
20828 | which value is non-zero. However, we have to be careful with | |
20829 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
20830 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
20831 | end up accidently finding a declaration attribute that belongs | |
20832 | to a different DIE referenced by the specification attribute, | |
20833 | even though the given DIE does not have a declaration attribute. */ | |
20834 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
20835 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
20836 | } |
20837 | ||
63d06c5c | 20838 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 20839 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
20840 | containing the return value on output. If there is no |
20841 | specification, but there is an abstract origin, that is | |
20842 | returned. */ | |
63d06c5c DC |
20843 | |
20844 | static struct die_info * | |
f2f0e013 | 20845 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 20846 | { |
f2f0e013 DJ |
20847 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
20848 | *spec_cu); | |
63d06c5c | 20849 | |
edb3359d DJ |
20850 | if (spec_attr == NULL) |
20851 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
20852 | ||
63d06c5c DC |
20853 | if (spec_attr == NULL) |
20854 | return NULL; | |
20855 | else | |
f2f0e013 | 20856 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 20857 | } |
c906108c | 20858 | |
527f3840 JK |
20859 | /* Stub for free_line_header to match void * callback types. */ |
20860 | ||
20861 | static void | |
20862 | free_line_header_voidp (void *arg) | |
20863 | { | |
9a3c8263 | 20864 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 20865 | |
fff8551c | 20866 | delete lh; |
527f3840 JK |
20867 | } |
20868 | ||
83769d0b | 20869 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
20870 | |
20871 | static struct dwarf2_section_info * | |
20872 | get_debug_line_section (struct dwarf2_cu *cu) | |
20873 | { | |
20874 | struct dwarf2_section_info *section; | |
976ca316 | 20875 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
36586728 TT |
20876 | |
20877 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
20878 | DWO file. */ | |
20879 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
20880 | section = &cu->dwo_unit->dwo_file->sections.line; | |
20881 | else if (cu->per_cu->is_dwz) | |
20882 | { | |
976ca316 | 20883 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
36586728 TT |
20884 | |
20885 | section = &dwz->line; | |
20886 | } | |
20887 | else | |
976ca316 | 20888 | section = &per_objfile->per_bfd->line; |
36586728 TT |
20889 | |
20890 | return section; | |
20891 | } | |
20892 | ||
debd256d | 20893 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20894 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20895 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20896 | Returns NULL if there is a problem reading the header, e.g., if it |
20897 | has a version we don't understand. | |
debd256d JB |
20898 | |
20899 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20900 | the returned object point into the dwarf line section buffer, |
20901 | and must not be freed. */ | |
ae2de4f8 | 20902 | |
fff8551c | 20903 | static line_header_up |
9c541725 | 20904 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20905 | { |
3019eac3 | 20906 | struct dwarf2_section_info *section; |
976ca316 | 20907 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 20908 | |
36586728 | 20909 | section = get_debug_line_section (cu); |
976ca316 | 20910 | section->read (per_objfile->objfile); |
3019eac3 | 20911 | if (section->buffer == NULL) |
debd256d | 20912 | { |
3019eac3 | 20913 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 20914 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 20915 | else |
b98664d3 | 20916 | complaint (_("missing .debug_line section")); |
debd256d JB |
20917 | return 0; |
20918 | } | |
20919 | ||
0df7ad3a | 20920 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
976ca316 | 20921 | per_objfile, section, &cu->header); |
debd256d | 20922 | } |
c906108c | 20923 | |
c6da4cef | 20924 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 20925 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 20926 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
20927 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20928 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20929 | |
d521ce57 | 20930 | static const char * |
7ba99d21 | 20931 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 20932 | const dwarf2_psymtab *pst, |
c89b44cd TT |
20933 | const char *comp_dir, |
20934 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20935 | { |
d521ce57 TT |
20936 | const char *include_name = fe.name; |
20937 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20938 | const char *pst_filename; |
c6da4cef DE |
20939 | int file_is_pst; |
20940 | ||
8c43009f | 20941 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20942 | |
c89b44cd | 20943 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20944 | if (!IS_ABSOLUTE_PATH (include_name) |
20945 | && (dir_name != NULL || comp_dir != NULL)) | |
20946 | { | |
20947 | /* Avoid creating a duplicate psymtab for PST. | |
20948 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20949 | Before we do the comparison, however, we need to account | |
20950 | for DIR_NAME and COMP_DIR. | |
20951 | First prepend dir_name (if non-NULL). If we still don't | |
20952 | have an absolute path prepend comp_dir (if non-NULL). | |
20953 | However, the directory we record in the include-file's | |
20954 | psymtab does not contain COMP_DIR (to match the | |
20955 | corresponding symtab(s)). | |
20956 | ||
20957 | Example: | |
20958 | ||
20959 | bash$ cd /tmp | |
20960 | bash$ gcc -g ./hello.c | |
20961 | include_name = "hello.c" | |
20962 | dir_name = "." | |
20963 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20964 | DW_AT_name = "./hello.c" |
20965 | ||
20966 | */ | |
c6da4cef DE |
20967 | |
20968 | if (dir_name != NULL) | |
20969 | { | |
c89b44cd TT |
20970 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20971 | include_name, (char *) NULL)); | |
20972 | include_name = name_holder->get (); | |
c6da4cef | 20973 | include_name_to_compare = include_name; |
c6da4cef DE |
20974 | } |
20975 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20976 | { | |
c89b44cd TT |
20977 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20978 | include_name, (char *) NULL)); | |
20979 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20980 | } |
20981 | } | |
20982 | ||
20983 | pst_filename = pst->filename; | |
c89b44cd | 20984 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20985 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20986 | { | |
c89b44cd TT |
20987 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20988 | pst_filename, (char *) NULL)); | |
20989 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20990 | } |
20991 | ||
1e3fad37 | 20992 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20993 | |
c6da4cef DE |
20994 | if (file_is_pst) |
20995 | return NULL; | |
20996 | return include_name; | |
20997 | } | |
20998 | ||
d9b3de22 DE |
20999 | /* State machine to track the state of the line number program. */ |
21000 | ||
6f77053d | 21001 | class lnp_state_machine |
d9b3de22 | 21002 | { |
6f77053d PA |
21003 | public: |
21004 | /* Initialize a machine state for the start of a line number | |
21005 | program. */ | |
804d2729 TT |
21006 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
21007 | bool record_lines_p); | |
6f77053d | 21008 | |
8c43009f PA |
21009 | file_entry *current_file () |
21010 | { | |
21011 | /* lh->file_names is 0-based, but the file name numbers in the | |
21012 | statement program are 1-based. */ | |
6f77053d PA |
21013 | return m_line_header->file_name_at (m_file); |
21014 | } | |
21015 | ||
21016 | /* Record the line in the state machine. END_SEQUENCE is true if | |
21017 | we're processing the end of a sequence. */ | |
21018 | void record_line (bool end_sequence); | |
21019 | ||
a8caed5d | 21020 | /* Check ADDRESS is -1, or zero and less than UNRELOCATED_LOWPC, and if true |
7ab6656f | 21021 | nop-out rest of the lines in this sequence. */ |
6f77053d PA |
21022 | void check_line_address (struct dwarf2_cu *cu, |
21023 | const gdb_byte *line_ptr, | |
7ab6656f | 21024 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
21025 | |
21026 | void handle_set_discriminator (unsigned int discriminator) | |
21027 | { | |
21028 | m_discriminator = discriminator; | |
21029 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
21030 | } | |
21031 | ||
21032 | /* Handle DW_LNE_set_address. */ | |
21033 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
21034 | { | |
21035 | m_op_index = 0; | |
21036 | address += baseaddr; | |
21037 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
21038 | } | |
21039 | ||
21040 | /* Handle DW_LNS_advance_pc. */ | |
21041 | void handle_advance_pc (CORE_ADDR adjust); | |
21042 | ||
21043 | /* Handle a special opcode. */ | |
21044 | void handle_special_opcode (unsigned char op_code); | |
21045 | ||
21046 | /* Handle DW_LNS_advance_line. */ | |
21047 | void handle_advance_line (int line_delta) | |
21048 | { | |
21049 | advance_line (line_delta); | |
21050 | } | |
21051 | ||
21052 | /* Handle DW_LNS_set_file. */ | |
21053 | void handle_set_file (file_name_index file); | |
21054 | ||
21055 | /* Handle DW_LNS_negate_stmt. */ | |
21056 | void handle_negate_stmt () | |
21057 | { | |
21058 | m_is_stmt = !m_is_stmt; | |
21059 | } | |
21060 | ||
21061 | /* Handle DW_LNS_const_add_pc. */ | |
21062 | void handle_const_add_pc (); | |
21063 | ||
21064 | /* Handle DW_LNS_fixed_advance_pc. */ | |
21065 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
21066 | { | |
21067 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21068 | m_op_index = 0; | |
21069 | } | |
21070 | ||
21071 | /* Handle DW_LNS_copy. */ | |
21072 | void handle_copy () | |
21073 | { | |
21074 | record_line (false); | |
21075 | m_discriminator = 0; | |
21076 | } | |
21077 | ||
21078 | /* Handle DW_LNE_end_sequence. */ | |
21079 | void handle_end_sequence () | |
21080 | { | |
804d2729 | 21081 | m_currently_recording_lines = true; |
6f77053d PA |
21082 | } |
21083 | ||
21084 | private: | |
21085 | /* Advance the line by LINE_DELTA. */ | |
21086 | void advance_line (int line_delta) | |
21087 | { | |
21088 | m_line += line_delta; | |
21089 | ||
21090 | if (line_delta != 0) | |
21091 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
21092 | } |
21093 | ||
804d2729 TT |
21094 | struct dwarf2_cu *m_cu; |
21095 | ||
6f77053d PA |
21096 | gdbarch *m_gdbarch; |
21097 | ||
21098 | /* True if we're recording lines. | |
21099 | Otherwise we're building partial symtabs and are just interested in | |
21100 | finding include files mentioned by the line number program. */ | |
21101 | bool m_record_lines_p; | |
21102 | ||
8c43009f | 21103 | /* The line number header. */ |
6f77053d | 21104 | line_header *m_line_header; |
8c43009f | 21105 | |
6f77053d PA |
21106 | /* These are part of the standard DWARF line number state machine, |
21107 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 21108 | |
6f77053d | 21109 | unsigned char m_op_index = 0; |
7ba99d21 AT |
21110 | /* The line table index of the current file. */ |
21111 | file_name_index m_file = 1; | |
6f77053d PA |
21112 | unsigned int m_line = 1; |
21113 | ||
21114 | /* These are initialized in the constructor. */ | |
21115 | ||
21116 | CORE_ADDR m_address; | |
21117 | bool m_is_stmt; | |
21118 | unsigned int m_discriminator; | |
d9b3de22 DE |
21119 | |
21120 | /* Additional bits of state we need to track. */ | |
21121 | ||
21122 | /* The last file that we called dwarf2_start_subfile for. | |
21123 | This is only used for TLLs. */ | |
6f77053d | 21124 | unsigned int m_last_file = 0; |
d9b3de22 | 21125 | /* The last file a line number was recorded for. */ |
6f77053d | 21126 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 21127 | |
1313c56e AB |
21128 | /* The address of the last line entry. */ |
21129 | CORE_ADDR m_last_address; | |
21130 | ||
21131 | /* Set to true when a previous line at the same address (using | |
21132 | m_last_address) had m_is_stmt true. This is reset to false when a | |
21133 | line entry at a new address (m_address different to m_last_address) is | |
21134 | processed. */ | |
21135 | bool m_stmt_at_address = false; | |
21136 | ||
804d2729 TT |
21137 | /* When true, record the lines we decode. */ |
21138 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
21139 | |
21140 | /* The last line number that was recorded, used to coalesce | |
21141 | consecutive entries for the same line. This can happen, for | |
21142 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
21143 | unsigned int m_last_line = 0; |
21144 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 21145 | }; |
d9b3de22 | 21146 | |
6f77053d PA |
21147 | void |
21148 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
21149 | { | |
21150 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
21151 | / m_line_header->maximum_ops_per_instruction) | |
21152 | * m_line_header->minimum_instruction_length); | |
21153 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21154 | m_op_index = ((m_op_index + adjust) | |
21155 | % m_line_header->maximum_ops_per_instruction); | |
21156 | } | |
d9b3de22 | 21157 | |
6f77053d PA |
21158 | void |
21159 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 21160 | { |
6f77053d | 21161 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
21162 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
21163 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
21164 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
21165 | / m_line_header->maximum_ops_per_instruction) |
21166 | * m_line_header->minimum_instruction_length); | |
21167 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 21168 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 21169 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 21170 | |
258bf0ee | 21171 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
21172 | advance_line (line_delta); |
21173 | record_line (false); | |
21174 | m_discriminator = 0; | |
21175 | } | |
d9b3de22 | 21176 | |
6f77053d PA |
21177 | void |
21178 | lnp_state_machine::handle_set_file (file_name_index file) | |
21179 | { | |
21180 | m_file = file; | |
21181 | ||
21182 | const file_entry *fe = current_file (); | |
21183 | if (fe == NULL) | |
21184 | dwarf2_debug_line_missing_file_complaint (); | |
21185 | else if (m_record_lines_p) | |
21186 | { | |
21187 | const char *dir = fe->include_dir (m_line_header); | |
21188 | ||
c24bdb02 | 21189 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21190 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 21191 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
21192 | } |
21193 | } | |
21194 | ||
21195 | void | |
21196 | lnp_state_machine::handle_const_add_pc () | |
21197 | { | |
21198 | CORE_ADDR adjust | |
21199 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
21200 | ||
21201 | CORE_ADDR addr_adj | |
21202 | = (((m_op_index + adjust) | |
21203 | / m_line_header->maximum_ops_per_instruction) | |
21204 | * m_line_header->minimum_instruction_length); | |
21205 | ||
21206 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21207 | m_op_index = ((m_op_index + adjust) | |
21208 | % m_line_header->maximum_ops_per_instruction); | |
21209 | } | |
d9b3de22 | 21210 | |
a05a36a5 DE |
21211 | /* Return non-zero if we should add LINE to the line number table. |
21212 | LINE is the line to add, LAST_LINE is the last line that was added, | |
21213 | LAST_SUBFILE is the subfile for LAST_LINE. | |
21214 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
21215 | had a non-zero discriminator. | |
21216 | ||
21217 | We have to be careful in the presence of discriminators. | |
21218 | E.g., for this line: | |
21219 | ||
21220 | for (i = 0; i < 100000; i++); | |
21221 | ||
21222 | clang can emit four line number entries for that one line, | |
21223 | each with a different discriminator. | |
21224 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
21225 | ||
21226 | However, we want gdb to coalesce all four entries into one. | |
21227 | Otherwise the user could stepi into the middle of the line and | |
21228 | gdb would get confused about whether the pc really was in the | |
21229 | middle of the line. | |
21230 | ||
21231 | Things are further complicated by the fact that two consecutive | |
21232 | line number entries for the same line is a heuristic used by gcc | |
21233 | to denote the end of the prologue. So we can't just discard duplicate | |
21234 | entries, we have to be selective about it. The heuristic we use is | |
21235 | that we only collapse consecutive entries for the same line if at least | |
21236 | one of those entries has a non-zero discriminator. PR 17276. | |
21237 | ||
21238 | Note: Addresses in the line number state machine can never go backwards | |
21239 | within one sequence, thus this coalescing is ok. */ | |
21240 | ||
21241 | static int | |
804d2729 TT |
21242 | dwarf_record_line_p (struct dwarf2_cu *cu, |
21243 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
21244 | int line_has_non_zero_discriminator, |
21245 | struct subfile *last_subfile) | |
21246 | { | |
c24bdb02 | 21247 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
21248 | return 1; |
21249 | if (line != last_line) | |
21250 | return 1; | |
21251 | /* Same line for the same file that we've seen already. | |
21252 | As a last check, for pr 17276, only record the line if the line | |
21253 | has never had a non-zero discriminator. */ | |
21254 | if (!line_has_non_zero_discriminator) | |
21255 | return 1; | |
21256 | return 0; | |
21257 | } | |
21258 | ||
804d2729 TT |
21259 | /* Use the CU's builder to record line number LINE beginning at |
21260 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
21261 | |
21262 | static void | |
d9b3de22 | 21263 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 21264 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 21265 | struct dwarf2_cu *cu) |
252a6764 DE |
21266 | { |
21267 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
21268 | ||
27e0867f DE |
21269 | if (dwarf_line_debug) |
21270 | { | |
21271 | fprintf_unfiltered (gdb_stdlog, | |
21272 | "Recording line %u, file %s, address %s\n", | |
21273 | line, lbasename (subfile->name), | |
21274 | paddress (gdbarch, address)); | |
21275 | } | |
21276 | ||
804d2729 | 21277 | if (cu != nullptr) |
8c95582d | 21278 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
21279 | } |
21280 | ||
21281 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
21282 | Mark the end of a set of line number records. | |
d9b3de22 | 21283 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
21284 | If SUBFILE is NULL the request is ignored. */ |
21285 | ||
21286 | static void | |
21287 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 21288 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 21289 | { |
27e0867f DE |
21290 | if (subfile == NULL) |
21291 | return; | |
21292 | ||
21293 | if (dwarf_line_debug) | |
21294 | { | |
21295 | fprintf_unfiltered (gdb_stdlog, | |
21296 | "Finishing current line, file %s, address %s\n", | |
21297 | lbasename (subfile->name), | |
21298 | paddress (gdbarch, address)); | |
21299 | } | |
21300 | ||
8c95582d | 21301 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
21302 | } |
21303 | ||
6f77053d PA |
21304 | void |
21305 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 21306 | { |
d9b3de22 DE |
21307 | if (dwarf_line_debug) |
21308 | { | |
21309 | fprintf_unfiltered (gdb_stdlog, | |
21310 | "Processing actual line %u: file %u," | |
94a72be7 | 21311 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 21312 | m_line, m_file, |
6f77053d | 21313 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
21314 | m_is_stmt, m_discriminator, |
21315 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
21316 | } |
21317 | ||
6f77053d | 21318 | file_entry *fe = current_file (); |
8c43009f PA |
21319 | |
21320 | if (fe == NULL) | |
d9b3de22 DE |
21321 | dwarf2_debug_line_missing_file_complaint (); |
21322 | /* For now we ignore lines not starting on an instruction boundary. | |
21323 | But not when processing end_sequence for compatibility with the | |
21324 | previous version of the code. */ | |
6f77053d | 21325 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 21326 | { |
8c43009f | 21327 | fe->included_p = 1; |
8c95582d | 21328 | if (m_record_lines_p) |
d9b3de22 | 21329 | { |
1313c56e AB |
21330 | /* When we switch files we insert an end maker in the first file, |
21331 | switch to the second file and add a new line entry. The | |
21332 | problem is that the end marker inserted in the first file will | |
21333 | discard any previous line entries at the same address. If the | |
21334 | line entries in the first file are marked as is-stmt, while | |
21335 | the new line in the second file is non-stmt, then this means | |
21336 | the end marker will discard is-stmt lines so we can have a | |
21337 | non-stmt line. This means that there are less addresses at | |
21338 | which the user can insert a breakpoint. | |
21339 | ||
21340 | To improve this we track the last address in m_last_address, | |
21341 | and whether we have seen an is-stmt at this address. Then | |
21342 | when switching files, if we have seen a stmt at the current | |
21343 | address, and we are switching to create a non-stmt line, then | |
21344 | discard the new line. */ | |
21345 | bool file_changed | |
21346 | = m_last_subfile != m_cu->get_builder ()->get_current_subfile (); | |
21347 | bool ignore_this_line | |
dda83cd7 SM |
21348 | = ((file_changed && !end_sequence && m_last_address == m_address |
21349 | && !m_is_stmt && m_stmt_at_address) | |
21350 | || (!end_sequence && m_line == 0)); | |
1313c56e AB |
21351 | |
21352 | if ((file_changed && !ignore_this_line) || end_sequence) | |
d9b3de22 | 21353 | { |
804d2729 TT |
21354 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
21355 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
21356 | } |
21357 | ||
1313c56e | 21358 | if (!end_sequence && !ignore_this_line) |
d9b3de22 | 21359 | { |
8c95582d AB |
21360 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
21361 | ||
804d2729 | 21362 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
21363 | m_line_has_non_zero_discriminator, |
21364 | m_last_subfile)) | |
d9b3de22 | 21365 | { |
c24bdb02 | 21366 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 21367 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 21368 | builder->get_current_subfile (), |
8c95582d | 21369 | m_line, m_address, is_stmt, |
804d2729 | 21370 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 21371 | } |
c24bdb02 | 21372 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21373 | m_last_line = m_line; |
d9b3de22 DE |
21374 | } |
21375 | } | |
21376 | } | |
1313c56e AB |
21377 | |
21378 | /* Track whether we have seen any m_is_stmt true at m_address in case we | |
21379 | have multiple line table entries all at m_address. */ | |
21380 | if (m_last_address != m_address) | |
21381 | { | |
21382 | m_stmt_at_address = false; | |
21383 | m_last_address = m_address; | |
21384 | } | |
21385 | m_stmt_at_address |= m_is_stmt; | |
d9b3de22 DE |
21386 | } |
21387 | ||
804d2729 TT |
21388 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
21389 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 21390 | { |
804d2729 | 21391 | m_cu = cu; |
6f77053d PA |
21392 | m_gdbarch = arch; |
21393 | m_record_lines_p = record_lines_p; | |
21394 | m_line_header = lh; | |
d9b3de22 | 21395 | |
804d2729 | 21396 | m_currently_recording_lines = true; |
d9b3de22 | 21397 | |
d9b3de22 DE |
21398 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
21399 | was a line entry for it so that the backend has a chance to adjust it | |
21400 | and also record it in case it needs it. This is currently used by MIPS | |
21401 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
21402 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
21403 | m_is_stmt = lh->default_is_stmt; | |
21404 | m_discriminator = 0; | |
1313c56e AB |
21405 | |
21406 | m_last_address = m_address; | |
21407 | m_stmt_at_address = false; | |
252a6764 DE |
21408 | } |
21409 | ||
6f77053d PA |
21410 | void |
21411 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
21412 | const gdb_byte *line_ptr, | |
7ab6656f | 21413 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 21414 | { |
a8caed5d FS |
21415 | /* Linkers resolve a symbolic relocation referencing a GC'd function to 0 or |
21416 | -1. If ADDRESS is 0, ignoring the opcode will err if the text section is | |
21417 | located at 0x0. In this case, additionally check that if | |
21418 | ADDRESS < UNRELOCATED_LOWPC. */ | |
924c2928 | 21419 | |
a8caed5d FS |
21420 | if ((address == 0 && address < unrelocated_lowpc) |
21421 | || address == (CORE_ADDR) -1) | |
924c2928 DE |
21422 | { |
21423 | /* This line table is for a function which has been | |
21424 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
21425 | ||
5e22e966 | 21426 | struct objfile *objfile = cu->per_objfile->objfile; |
924c2928 DE |
21427 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
21428 | ||
b98664d3 | 21429 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 21430 | line_offset, objfile_name (objfile)); |
804d2729 TT |
21431 | m_currently_recording_lines = false; |
21432 | /* Note: m_currently_recording_lines is left as false until we see | |
21433 | DW_LNE_end_sequence. */ | |
924c2928 DE |
21434 | } |
21435 | } | |
21436 | ||
f3f5162e | 21437 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
21438 | Process the line number information in LH. |
21439 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
21440 | program in order to set included_p for every referenced header. */ | |
debd256d | 21441 | |
c906108c | 21442 | static void |
43f3e411 DE |
21443 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
21444 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 21445 | { |
d521ce57 TT |
21446 | const gdb_byte *line_ptr, *extended_end; |
21447 | const gdb_byte *line_end; | |
a8c50c1f | 21448 | unsigned int bytes_read, extended_len; |
699ca60a | 21449 | unsigned char op_code, extended_op; |
e142c38c | 21450 | CORE_ADDR baseaddr; |
5e22e966 | 21451 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21452 | bfd *abfd = objfile->obfd; |
08feed99 | 21453 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
21454 | /* True if we're recording line info (as opposed to building partial |
21455 | symtabs and just interested in finding include files mentioned by | |
21456 | the line number program). */ | |
21457 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 21458 | |
b3b3bada | 21459 | baseaddr = objfile->text_section_offset (); |
c906108c | 21460 | |
debd256d JB |
21461 | line_ptr = lh->statement_program_start; |
21462 | line_end = lh->statement_program_end; | |
c906108c SS |
21463 | |
21464 | /* Read the statement sequences until there's nothing left. */ | |
21465 | while (line_ptr < line_end) | |
21466 | { | |
6f77053d PA |
21467 | /* The DWARF line number program state machine. Reset the state |
21468 | machine at the start of each sequence. */ | |
804d2729 | 21469 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 21470 | bool end_sequence = false; |
d9b3de22 | 21471 | |
8c43009f | 21472 | if (record_lines_p) |
c906108c | 21473 | { |
8c43009f PA |
21474 | /* Start a subfile for the current file of the state |
21475 | machine. */ | |
21476 | const file_entry *fe = state_machine.current_file (); | |
21477 | ||
21478 | if (fe != NULL) | |
804d2729 | 21479 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
21480 | } |
21481 | ||
a738430d | 21482 | /* Decode the table. */ |
d9b3de22 | 21483 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
21484 | { |
21485 | op_code = read_1_byte (abfd, line_ptr); | |
21486 | line_ptr += 1; | |
9aa1fe7e | 21487 | |
debd256d | 21488 | if (op_code >= lh->opcode_base) |
6e70227d | 21489 | { |
8e07a239 | 21490 | /* Special opcode. */ |
6f77053d | 21491 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
21492 | } |
21493 | else switch (op_code) | |
c906108c SS |
21494 | { |
21495 | case DW_LNS_extended_op: | |
3e43a32a MS |
21496 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
21497 | &bytes_read); | |
473b7be6 | 21498 | line_ptr += bytes_read; |
a8c50c1f | 21499 | extended_end = line_ptr + extended_len; |
c906108c SS |
21500 | extended_op = read_1_byte (abfd, line_ptr); |
21501 | line_ptr += 1; | |
8f34b746 TV |
21502 | if (DW_LNE_lo_user <= extended_op |
21503 | && extended_op <= DW_LNE_hi_user) | |
21504 | { | |
21505 | /* Vendor extension, ignore. */ | |
21506 | line_ptr = extended_end; | |
21507 | break; | |
21508 | } | |
c906108c SS |
21509 | switch (extended_op) |
21510 | { | |
21511 | case DW_LNE_end_sequence: | |
6f77053d PA |
21512 | state_machine.handle_end_sequence (); |
21513 | end_sequence = true; | |
c906108c SS |
21514 | break; |
21515 | case DW_LNE_set_address: | |
d9b3de22 DE |
21516 | { |
21517 | CORE_ADDR address | |
c8a7a66f | 21518 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 21519 | line_ptr += bytes_read; |
6f77053d PA |
21520 | |
21521 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 21522 | lowpc - baseaddr, address); |
6f77053d | 21523 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 21524 | } |
c906108c SS |
21525 | break; |
21526 | case DW_LNE_define_file: | |
dda83cd7 SM |
21527 | { |
21528 | const char *cur_file; | |
ecfb656c PA |
21529 | unsigned int mod_time, length; |
21530 | dir_index dindex; | |
6e70227d | 21531 | |
dda83cd7 | 21532 | cur_file = read_direct_string (abfd, line_ptr, |
3e43a32a | 21533 | &bytes_read); |
dda83cd7 SM |
21534 | line_ptr += bytes_read; |
21535 | dindex = (dir_index) | |
21536 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21537 | line_ptr += bytes_read; | |
21538 | mod_time = | |
21539 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21540 | line_ptr += bytes_read; | |
21541 | length = | |
21542 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21543 | line_ptr += bytes_read; | |
21544 | lh->add_file_name (cur_file, dindex, mod_time, length); | |
21545 | } | |
c906108c | 21546 | break; |
d0c6ba3d | 21547 | case DW_LNE_set_discriminator: |
6f77053d PA |
21548 | { |
21549 | /* The discriminator is not interesting to the | |
21550 | debugger; just ignore it. We still need to | |
21551 | check its value though: | |
21552 | if there are consecutive entries for the same | |
21553 | (non-prologue) line we want to coalesce them. | |
21554 | PR 17276. */ | |
21555 | unsigned int discr | |
21556 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21557 | line_ptr += bytes_read; | |
21558 | ||
21559 | state_machine.handle_set_discriminator (discr); | |
21560 | } | |
d0c6ba3d | 21561 | break; |
c906108c | 21562 | default: |
b98664d3 | 21563 | complaint (_("mangled .debug_line section")); |
debd256d | 21564 | return; |
c906108c | 21565 | } |
a8c50c1f DJ |
21566 | /* Make sure that we parsed the extended op correctly. If e.g. |
21567 | we expected a different address size than the producer used, | |
21568 | we may have read the wrong number of bytes. */ | |
21569 | if (line_ptr != extended_end) | |
21570 | { | |
b98664d3 | 21571 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
21572 | return; |
21573 | } | |
c906108c SS |
21574 | break; |
21575 | case DW_LNS_copy: | |
6f77053d | 21576 | state_machine.handle_copy (); |
c906108c SS |
21577 | break; |
21578 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21579 | { |
21580 | CORE_ADDR adjust | |
21581 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21582 | line_ptr += bytes_read; |
6f77053d PA |
21583 | |
21584 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21585 | } |
c906108c SS |
21586 | break; |
21587 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21588 | { |
21589 | int line_delta | |
21590 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21591 | line_ptr += bytes_read; |
6f77053d PA |
21592 | |
21593 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21594 | } |
c906108c SS |
21595 | break; |
21596 | case DW_LNS_set_file: | |
d9b3de22 | 21597 | { |
6f77053d | 21598 | file_name_index file |
ecfb656c PA |
21599 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21600 | &bytes_read); | |
d9b3de22 | 21601 | line_ptr += bytes_read; |
8c43009f | 21602 | |
6f77053d | 21603 | state_machine.handle_set_file (file); |
d9b3de22 | 21604 | } |
c906108c SS |
21605 | break; |
21606 | case DW_LNS_set_column: | |
0ad93d4f | 21607 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21608 | line_ptr += bytes_read; |
21609 | break; | |
21610 | case DW_LNS_negate_stmt: | |
6f77053d | 21611 | state_machine.handle_negate_stmt (); |
c906108c SS |
21612 | break; |
21613 | case DW_LNS_set_basic_block: | |
c906108c | 21614 | break; |
c2c6d25f JM |
21615 | /* Add to the address register of the state machine the |
21616 | address increment value corresponding to special opcode | |
a738430d MK |
21617 | 255. I.e., this value is scaled by the minimum |
21618 | instruction length since special opcode 255 would have | |
b021a221 | 21619 | scaled the increment. */ |
c906108c | 21620 | case DW_LNS_const_add_pc: |
6f77053d | 21621 | state_machine.handle_const_add_pc (); |
c906108c SS |
21622 | break; |
21623 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21624 | { |
6f77053d | 21625 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21626 | line_ptr += 2; |
6f77053d PA |
21627 | |
21628 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21629 | } |
c906108c | 21630 | break; |
9aa1fe7e | 21631 | default: |
a738430d MK |
21632 | { |
21633 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21634 | int i; |
a738430d | 21635 | |
debd256d | 21636 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21637 | { |
21638 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21639 | line_ptr += bytes_read; | |
21640 | } | |
21641 | } | |
c906108c SS |
21642 | } |
21643 | } | |
d9b3de22 DE |
21644 | |
21645 | if (!end_sequence) | |
21646 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21647 | ||
21648 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21649 | in which case we still finish recording the last line). */ | |
6f77053d | 21650 | state_machine.record_line (true); |
c906108c | 21651 | } |
f3f5162e DE |
21652 | } |
21653 | ||
21654 | /* Decode the Line Number Program (LNP) for the given line_header | |
21655 | structure and CU. The actual information extracted and the type | |
21656 | of structures created from the LNP depends on the value of PST. | |
21657 | ||
21658 | 1. If PST is NULL, then this procedure uses the data from the program | |
21659 | to create all necessary symbol tables, and their linetables. | |
21660 | ||
21661 | 2. If PST is not NULL, this procedure reads the program to determine | |
21662 | the list of files included by the unit represented by PST, and | |
21663 | builds all the associated partial symbol tables. | |
21664 | ||
21665 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21666 | It is used for relative paths in the line table. | |
21667 | NOTE: When processing partial symtabs (pst != NULL), | |
21668 | comp_dir == pst->dirname. | |
21669 | ||
21670 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21671 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21672 | symtab we don't use it in the name of the psymtabs we create. | |
21673 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21674 | A good testcase for this is mb-inline.exp. |
21675 | ||
527f3840 JK |
21676 | LOWPC is the lowest address in CU (or 0 if not known). |
21677 | ||
21678 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21679 | for its PC<->lines mapping information. Otherwise only the filename | |
21680 | table is read in. */ | |
f3f5162e DE |
21681 | |
21682 | static void | |
21683 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 21684 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 21685 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21686 | { |
5e22e966 | 21687 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21688 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21689 | |
527f3840 JK |
21690 | if (decode_mapping) |
21691 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21692 | |
21693 | if (decode_for_pst_p) | |
21694 | { | |
aaa75496 | 21695 | /* Now that we're done scanning the Line Header Program, we can |
dda83cd7 | 21696 | create the psymtab of each included file. */ |
7ba99d21 | 21697 | for (auto &file_entry : lh->file_names ()) |
dda83cd7 SM |
21698 | if (file_entry.included_p == 1) |
21699 | { | |
c89b44cd | 21700 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21701 | const char *include_name = |
7ba99d21 AT |
21702 | psymtab_include_file_name (lh, file_entry, pst, |
21703 | comp_dir, &name_holder); | |
c6da4cef | 21704 | if (include_name != NULL) |
dda83cd7 SM |
21705 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21706 | } | |
aaa75496 | 21707 | } |
cb1df416 DJ |
21708 | else |
21709 | { | |
21710 | /* Make sure a symtab is created for every file, even files | |
21711 | which contain only variables (i.e. no code with associated | |
21712 | line numbers). */ | |
c24bdb02 KS |
21713 | buildsym_compunit *builder = cu->get_builder (); |
21714 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 21715 | |
7ba99d21 | 21716 | for (auto &fe : lh->file_names ()) |
cb1df416 | 21717 | { |
804d2729 | 21718 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 21719 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 21720 | { |
c24bdb02 | 21721 | builder->get_current_subfile ()->symtab |
804d2729 | 21722 | = allocate_symtab (cust, |
c24bdb02 | 21723 | builder->get_current_subfile ()->name); |
43f3e411 | 21724 | } |
c24bdb02 | 21725 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
21726 | } |
21727 | } | |
c906108c SS |
21728 | } |
21729 | ||
21730 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21731 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21732 | or NULL if not known. |
c906108c SS |
21733 | This routine tries to keep line numbers from identical absolute and |
21734 | relative file names in a common subfile. | |
21735 | ||
21736 | Using the `list' example from the GDB testsuite, which resides in | |
21737 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21738 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21739 | ||
c5aa993b | 21740 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21741 | DW_AT_comp_dir: /compdir |
357e46e7 | 21742 | files.files[0].name: list0.h |
c5aa993b | 21743 | files.files[0].dir: /srcdir |
357e46e7 | 21744 | files.files[1].name: list0.c |
c5aa993b | 21745 | files.files[1].dir: /srcdir |
c906108c SS |
21746 | |
21747 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21748 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21749 | start_subfile will ensure that this happens provided that we pass the | |
21750 | concatenation of files.files[1].dir and files.files[1].name as the | |
21751 | subfile's name. */ | |
c906108c SS |
21752 | |
21753 | static void | |
804d2729 TT |
21754 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
21755 | const char *dirname) | |
c906108c | 21756 | { |
43816ebc | 21757 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 21758 | |
4d663531 | 21759 | /* In order not to lose the line information directory, |
4f1520fb FR |
21760 | we concatenate it to the filename when it makes sense. |
21761 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21762 | information): ``The directory index is ignored for file names | |
21763 | that represent full path names''. Thus ignoring dirname in the | |
21764 | `else' branch below isn't an issue. */ | |
c906108c | 21765 | |
d5166ae1 | 21766 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 21767 | { |
43816ebc TT |
21768 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
21769 | filename = copy.get (); | |
d521ce57 | 21770 | } |
c906108c | 21771 | |
c24bdb02 | 21772 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
21773 | } |
21774 | ||
804d2729 TT |
21775 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
21776 | buildsym_compunit constructor. */ | |
f4dc4d17 | 21777 | |
c24bdb02 KS |
21778 | struct compunit_symtab * |
21779 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
21780 | CORE_ADDR low_pc) | |
f4dc4d17 | 21781 | { |
c24bdb02 | 21782 | gdb_assert (m_builder == nullptr); |
43f3e411 | 21783 | |
c24bdb02 | 21784 | m_builder.reset (new struct buildsym_compunit |
f6e649dd | 21785 | (this->per_objfile->objfile, |
c24bdb02 | 21786 | name, comp_dir, language, low_pc)); |
93b8bea4 | 21787 | |
c24bdb02 | 21788 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 21789 | |
c24bdb02 KS |
21790 | get_builder ()->record_debugformat ("DWARF 2"); |
21791 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 21792 | |
c24bdb02 | 21793 | processing_has_namespace_info = false; |
43f3e411 | 21794 | |
c24bdb02 | 21795 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
21796 | } |
21797 | ||
4c2df51b DJ |
21798 | static void |
21799 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21800 | struct dwarf2_cu *cu) |
4c2df51b | 21801 | { |
5e22e966 | 21802 | struct objfile *objfile = cu->per_objfile->objfile; |
e7c27a73 DJ |
21803 | struct comp_unit_head *cu_header = &cu->header; |
21804 | ||
4c2df51b DJ |
21805 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21806 | code here to turn a symbol with DW_AT_external and a | |
21807 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21808 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21809 | with some versions of binutils) where shared libraries could have | |
21810 | relocations against symbols in their debug information - the | |
21811 | minimal symbol would have the right address, but the debug info | |
21812 | would not. It's no longer necessary, because we will explicitly | |
21813 | apply relocations when we read in the debug information now. */ | |
21814 | ||
21815 | /* A DW_AT_location attribute with no contents indicates that a | |
21816 | variable has been optimized away. */ | |
9d2246fc | 21817 | if (attr->form_is_block () && attr->as_block ()->size == 0) |
4c2df51b | 21818 | { |
f1e6e072 | 21819 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21820 | return; |
21821 | } | |
21822 | ||
21823 | /* Handle one degenerate form of location expression specially, to | |
21824 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
21825 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
21826 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 21827 | |
9d2246fc TT |
21828 | if (attr->form_is_block ()) |
21829 | { | |
21830 | struct dwarf_block *block = attr->as_block (); | |
21831 | ||
21832 | if ((block->data[0] == DW_OP_addr | |
21833 | && block->size == 1 + cu_header->addr_size) | |
21834 | || ((block->data[0] == DW_OP_GNU_addr_index | |
dda83cd7 | 21835 | || block->data[0] == DW_OP_addrx) |
9d2246fc TT |
21836 | && (block->size |
21837 | == 1 + leb128_size (&block->data[1])))) | |
21838 | { | |
21839 | unsigned int dummy; | |
21840 | ||
21841 | if (block->data[0] == DW_OP_addr) | |
21842 | SET_SYMBOL_VALUE_ADDRESS | |
21843 | (sym, cu->header.read_address (objfile->obfd, | |
21844 | block->data + 1, | |
38583298 | 21845 | &dummy)); |
9d2246fc TT |
21846 | else |
21847 | SET_SYMBOL_VALUE_ADDRESS | |
21848 | (sym, read_addr_index_from_leb128 (cu, block->data + 1, | |
21849 | &dummy)); | |
21850 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; | |
21851 | fixup_symbol_section (sym, objfile); | |
21852 | SET_SYMBOL_VALUE_ADDRESS | |
21853 | (sym, | |
21854 | SYMBOL_VALUE_ADDRESS (sym) | |
21855 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
21856 | return; | |
21857 | } | |
4c2df51b DJ |
21858 | } |
21859 | ||
21860 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21861 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21862 | (i.e. when the value of a register or memory location is | |
21863 | referenced, or a thread-local block, etc.). Then again, it might | |
21864 | not be worthwhile. I'm assuming that it isn't unless performance | |
21865 | or memory numbers show me otherwise. */ | |
21866 | ||
f1e6e072 | 21867 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21868 | |
f1e6e072 | 21869 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 21870 | cu->has_loclist = true; |
4c2df51b DJ |
21871 | } |
21872 | ||
c906108c SS |
21873 | /* Given a pointer to a DWARF information entry, figure out if we need |
21874 | to make a symbol table entry for it, and if so, create a new entry | |
21875 | and return a pointer to it. | |
21876 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21877 | used the passed type. |
21878 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21879 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21880 | |
21881 | static struct symbol * | |
5e2db402 TT |
21882 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21883 | struct symbol *space) | |
c906108c | 21884 | { |
976ca316 SM |
21885 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
21886 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 21887 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 21888 | struct symbol *sym = NULL; |
15d034d0 | 21889 | const char *name; |
c906108c SS |
21890 | struct attribute *attr = NULL; |
21891 | struct attribute *attr2 = NULL; | |
e142c38c | 21892 | CORE_ADDR baseaddr; |
e37fd15a SW |
21893 | struct pending **list_to_add = NULL; |
21894 | ||
edb3359d | 21895 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 21896 | |
b3b3bada | 21897 | baseaddr = objfile->text_section_offset (); |
c906108c | 21898 | |
94af9270 | 21899 | name = dwarf2_name (die, cu); |
c906108c SS |
21900 | if (name) |
21901 | { | |
34eaf542 | 21902 | int suppress_add = 0; |
94af9270 | 21903 | |
34eaf542 TT |
21904 | if (space) |
21905 | sym = space; | |
21906 | else | |
8c14c3a3 | 21907 | sym = new (&objfile->objfile_obstack) symbol; |
c906108c | 21908 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21909 | |
21910 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 21911 | sym->set_language (cu->language, &objfile->objfile_obstack); |
f55ee35c JK |
21912 | /* Fortran does not have mangling standard and the mangling does differ |
21913 | between gfortran, iFort etc. */ | |
bcfe6157 TT |
21914 | const char *physname |
21915 | = (cu->language == language_fortran | |
21916 | ? dwarf2_full_name (name, die, cu) | |
21917 | : dwarf2_physname (name, die, cu)); | |
21918 | const char *linkagename = dw2_linkage_name (die, cu); | |
21919 | ||
21920 | if (linkagename == nullptr || cu->language == language_ada) | |
21921 | sym->set_linkage_name (physname); | |
21922 | else | |
21923 | { | |
21924 | sym->set_demangled_name (physname, &objfile->objfile_obstack); | |
21925 | sym->set_linkage_name (linkagename); | |
21926 | } | |
f55ee35c | 21927 | |
c906108c | 21928 | /* Default assumptions. |
dda83cd7 | 21929 | Use the passed type or decode it from the die. */ |
176620f1 | 21930 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21931 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21932 | if (type != NULL) |
21933 | SYMBOL_TYPE (sym) = type; | |
21934 | else | |
e7c27a73 | 21935 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21936 | attr = dwarf2_attr (die, |
21937 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21938 | cu); | |
435d3d88 | 21939 | if (attr != nullptr) |
529908cb | 21940 | SYMBOL_LINE (sym) = attr->constant_value (0); |
cb1df416 | 21941 | |
edb3359d DJ |
21942 | attr = dwarf2_attr (die, |
21943 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21944 | cu); | |
529908cb | 21945 | if (attr != nullptr && attr->form_is_unsigned ()) |
cb1df416 | 21946 | { |
529908cb TT |
21947 | file_name_index file_index |
21948 | = (file_name_index) attr->as_unsigned (); | |
8c43009f | 21949 | struct file_entry *fe; |
9a619af0 | 21950 | |
ecfb656c PA |
21951 | if (cu->line_header != NULL) |
21952 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21953 | else |
21954 | fe = NULL; | |
21955 | ||
21956 | if (fe == NULL) | |
b98664d3 | 21957 | complaint (_("file index out of range")); |
8c43009f PA |
21958 | else |
21959 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21960 | } |
21961 | ||
c906108c SS |
21962 | switch (die->tag) |
21963 | { | |
21964 | case DW_TAG_label: | |
e142c38c | 21965 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 21966 | if (attr != nullptr) |
3e29f34a MR |
21967 | { |
21968 | CORE_ADDR addr; | |
21969 | ||
95f982e5 | 21970 | addr = attr->as_address (); |
3e29f34a | 21971 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 21972 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
8f5c6526 | 21973 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
3e29f34a | 21974 | } |
8f5c6526 TV |
21975 | else |
21976 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; | |
0f5238ed TT |
21977 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21978 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
d3cb6808 | 21979 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21980 | break; |
21981 | case DW_TAG_subprogram: | |
21982 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21983 | finish_block. */ | |
f1e6e072 | 21984 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21985 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 21986 | if ((attr2 != nullptr && attr2->as_boolean ()) |
0a4b0913 AB |
21987 | || cu->language == language_ada |
21988 | || cu->language == language_fortran) | |
c906108c | 21989 | { |
dda83cd7 SM |
21990 | /* Subprograms marked external are stored as a global symbol. |
21991 | Ada and Fortran subprograms, whether marked external or | |
21992 | not, are always stored as a global symbol, because we want | |
21993 | to be able to access them globally. For instance, we want | |
21994 | to be able to break on a nested subprogram without having | |
21995 | to specify the context. */ | |
c24bdb02 | 21996 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
21997 | } |
21998 | else | |
21999 | { | |
e37fd15a | 22000 | list_to_add = cu->list_in_scope; |
c906108c SS |
22001 | } |
22002 | break; | |
edb3359d DJ |
22003 | case DW_TAG_inlined_subroutine: |
22004 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
22005 | finish_block. */ | |
f1e6e072 | 22006 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 22007 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 22008 | list_to_add = cu->list_in_scope; |
edb3359d | 22009 | break; |
34eaf542 TT |
22010 | case DW_TAG_template_value_param: |
22011 | suppress_add = 1; | |
22012 | /* Fall through. */ | |
72929c62 | 22013 | case DW_TAG_constant: |
c906108c | 22014 | case DW_TAG_variable: |
254e6b9e | 22015 | case DW_TAG_member: |
0963b4bd MS |
22016 | /* Compilation with minimal debug info may result in |
22017 | variables with missing type entries. Change the | |
22018 | misleading `void' type to something sensible. */ | |
78134374 | 22019 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_VOID) |
46a4882b | 22020 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 22021 | |
e142c38c | 22022 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
22023 | /* In the case of DW_TAG_member, we should only be called for |
22024 | static const members. */ | |
22025 | if (die->tag == DW_TAG_member) | |
22026 | { | |
3863f96c DE |
22027 | /* dwarf2_add_field uses die_is_declaration, |
22028 | so we do the same. */ | |
254e6b9e DE |
22029 | gdb_assert (die_is_declaration (die, cu)); |
22030 | gdb_assert (attr); | |
22031 | } | |
435d3d88 | 22032 | if (attr != nullptr) |
c906108c | 22033 | { |
e7c27a73 | 22034 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 22035 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 22036 | if (!suppress_add) |
34eaf542 | 22037 | { |
c45bc3f8 | 22038 | if (attr2 != nullptr && attr2->as_boolean ()) |
c24bdb02 | 22039 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 22040 | else |
e37fd15a | 22041 | list_to_add = cu->list_in_scope; |
34eaf542 | 22042 | } |
c906108c SS |
22043 | break; |
22044 | } | |
e142c38c | 22045 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 22046 | if (attr != nullptr) |
c906108c | 22047 | { |
e7c27a73 | 22048 | var_decode_location (attr, sym, cu); |
e142c38c | 22049 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
22050 | |
22051 | /* Fortran explicitly imports any global symbols to the local | |
22052 | scope by DW_TAG_common_block. */ | |
22053 | if (cu->language == language_fortran && die->parent | |
22054 | && die->parent->tag == DW_TAG_common_block) | |
22055 | attr2 = NULL; | |
22056 | ||
caac4577 JG |
22057 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
22058 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
976ca316 | 22059 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
22060 | { |
22061 | /* When a static variable is eliminated by the linker, | |
22062 | the corresponding debug information is not stripped | |
22063 | out, but the variable address is set to null; | |
22064 | do not add such variables into symbol table. */ | |
22065 | } | |
c45bc3f8 | 22066 | else if (attr2 != nullptr && attr2->as_boolean ()) |
1c809c68 | 22067 | { |
4b610737 TT |
22068 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
22069 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
976ca316 | 22070 | && per_objfile->per_bfd->can_copy) |
4b610737 TT |
22071 | { |
22072 | /* A global static variable might be subject to | |
22073 | copy relocation. We first check for a local | |
22074 | minsym, though, because maybe the symbol was | |
22075 | marked hidden, in which case this would not | |
22076 | apply. */ | |
22077 | bound_minimal_symbol found | |
22078 | = (lookup_minimal_symbol_linkage | |
987012b8 | 22079 | (sym->linkage_name (), objfile)); |
4b610737 TT |
22080 | if (found.minsym != nullptr) |
22081 | sym->maybe_copied = 1; | |
22082 | } | |
f55ee35c | 22083 | |
1c809c68 TT |
22084 | /* A variable with DW_AT_external is never static, |
22085 | but it may be block-scoped. */ | |
804d2729 | 22086 | list_to_add |
c24bdb02 KS |
22087 | = ((cu->list_in_scope |
22088 | == cu->get_builder ()->get_file_symbols ()) | |
22089 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22090 | : cu->list_in_scope); |
1c809c68 | 22091 | } |
c906108c | 22092 | else |
e37fd15a | 22093 | list_to_add = cu->list_in_scope; |
c906108c SS |
22094 | } |
22095 | else | |
22096 | { | |
22097 | /* We do not know the address of this symbol. | |
dda83cd7 SM |
22098 | If it is an external symbol and we have type information |
22099 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
22100 | The address of the variable will then be determined from | |
22101 | the minimal symbol table whenever the variable is | |
22102 | referenced. */ | |
e142c38c | 22103 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
22104 | |
22105 | /* Fortran explicitly imports any global symbols to the local | |
22106 | scope by DW_TAG_common_block. */ | |
22107 | if (cu->language == language_fortran && die->parent | |
22108 | && die->parent->tag == DW_TAG_common_block) | |
22109 | { | |
22110 | /* SYMBOL_CLASS doesn't matter here because | |
22111 | read_common_block is going to reset it. */ | |
22112 | if (!suppress_add) | |
22113 | list_to_add = cu->list_in_scope; | |
22114 | } | |
c45bc3f8 | 22115 | else if (attr2 != nullptr && attr2->as_boolean () |
0971de02 | 22116 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 22117 | { |
0fe7935b DJ |
22118 | /* A variable with DW_AT_external is never static, but it |
22119 | may be block-scoped. */ | |
804d2729 | 22120 | list_to_add |
c24bdb02 KS |
22121 | = ((cu->list_in_scope |
22122 | == cu->get_builder ()->get_file_symbols ()) | |
22123 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22124 | : cu->list_in_scope); |
0fe7935b | 22125 | |
f1e6e072 | 22126 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 22127 | } |
442ddf59 JK |
22128 | else if (!die_is_declaration (die, cu)) |
22129 | { | |
22130 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
22131 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
22132 | if (!suppress_add) |
22133 | list_to_add = cu->list_in_scope; | |
442ddf59 | 22134 | } |
c906108c SS |
22135 | } |
22136 | break; | |
22137 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
22138 | { |
22139 | /* If we are inside a function, mark this as an argument. If | |
22140 | not, we might be looking at an argument to an inlined function | |
22141 | when we do not have enough information to show inlined frames; | |
22142 | pretend it's a local variable in that case so that the user can | |
22143 | still see it. */ | |
804d2729 | 22144 | struct context_stack *curr |
c24bdb02 | 22145 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
22146 | if (curr != nullptr && curr->name != nullptr) |
22147 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
22148 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 22149 | if (attr != nullptr) |
a60f3166 TT |
22150 | { |
22151 | var_decode_location (attr, sym, cu); | |
22152 | } | |
22153 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 22154 | if (attr != nullptr) |
a60f3166 TT |
22155 | { |
22156 | dwarf2_const_value (attr, sym, cu); | |
22157 | } | |
f346a30d | 22158 | |
a60f3166 TT |
22159 | list_to_add = cu->list_in_scope; |
22160 | } | |
c906108c SS |
22161 | break; |
22162 | case DW_TAG_unspecified_parameters: | |
22163 | /* From varargs functions; gdb doesn't seem to have any | |
22164 | interest in this information, so just ignore it for now. | |
22165 | (FIXME?) */ | |
22166 | break; | |
34eaf542 TT |
22167 | case DW_TAG_template_type_param: |
22168 | suppress_add = 1; | |
22169 | /* Fall through. */ | |
c906108c | 22170 | case DW_TAG_class_type: |
680b30c7 | 22171 | case DW_TAG_interface_type: |
c906108c SS |
22172 | case DW_TAG_structure_type: |
22173 | case DW_TAG_union_type: | |
72019c9c | 22174 | case DW_TAG_set_type: |
c906108c | 22175 | case DW_TAG_enumeration_type: |
f1e6e072 | 22176 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22177 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 22178 | |
63d06c5c | 22179 | { |
9c37b5ae | 22180 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
22181 | really ever be static objects: otherwise, if you try |
22182 | to, say, break of a class's method and you're in a file | |
22183 | which doesn't mention that class, it won't work unless | |
22184 | the check for all static symbols in lookup_symbol_aux | |
22185 | saves you. See the OtherFileClass tests in | |
22186 | gdb.c++/namespace.exp. */ | |
22187 | ||
e37fd15a | 22188 | if (!suppress_add) |
34eaf542 | 22189 | { |
c24bdb02 | 22190 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 22191 | list_to_add |
c24bdb02 | 22192 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 22193 | && cu->language == language_cplus |
c24bdb02 | 22194 | ? builder->get_global_symbols () |
804d2729 | 22195 | : cu->list_in_scope); |
63d06c5c | 22196 | |
64382290 | 22197 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 22198 | ... }" also defines a typedef for "foo". */ |
64382290 | 22199 | if (cu->language == language_cplus |
45280282 | 22200 | || cu->language == language_ada |
c44af4eb TT |
22201 | || cu->language == language_d |
22202 | || cu->language == language_rust) | |
64382290 TT |
22203 | { |
22204 | /* The symbol's name is already allocated along | |
22205 | with this objfile, so we don't need to | |
22206 | duplicate it for the type. */ | |
7d93a1e0 | 22207 | if (SYMBOL_TYPE (sym)->name () == 0) |
d0e39ea2 | 22208 | SYMBOL_TYPE (sym)->set_name (sym->search_name ()); |
64382290 | 22209 | } |
63d06c5c DC |
22210 | } |
22211 | } | |
c906108c SS |
22212 | break; |
22213 | case DW_TAG_typedef: | |
f1e6e072 | 22214 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 22215 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22216 | list_to_add = cu->list_in_scope; |
63d06c5c | 22217 | break; |
d8f62e84 | 22218 | case DW_TAG_array_type: |
c906108c | 22219 | case DW_TAG_base_type: |
dda83cd7 | 22220 | case DW_TAG_subrange_type: |
f1e6e072 | 22221 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22222 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22223 | list_to_add = cu->list_in_scope; |
c906108c SS |
22224 | break; |
22225 | case DW_TAG_enumerator: | |
e142c38c | 22226 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 22227 | if (attr != nullptr) |
c906108c | 22228 | { |
e7c27a73 | 22229 | dwarf2_const_value (attr, sym, cu); |
c906108c | 22230 | } |
63d06c5c DC |
22231 | { |
22232 | /* NOTE: carlton/2003-11-10: See comment above in the | |
22233 | DW_TAG_class_type, etc. block. */ | |
22234 | ||
804d2729 | 22235 | list_to_add |
c24bdb02 | 22236 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 22237 | && cu->language == language_cplus |
c24bdb02 | 22238 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 22239 | : cu->list_in_scope); |
63d06c5c | 22240 | } |
c906108c | 22241 | break; |
74921315 | 22242 | case DW_TAG_imported_declaration: |
5c4e30ca | 22243 | case DW_TAG_namespace: |
f1e6e072 | 22244 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 22245 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 22246 | break; |
530e8392 KB |
22247 | case DW_TAG_module: |
22248 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
22249 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 22250 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 22251 | break; |
4357ac6c | 22252 | case DW_TAG_common_block: |
f1e6e072 | 22253 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 22254 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 22255 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 22256 | break; |
c906108c SS |
22257 | default: |
22258 | /* Not a tag we recognize. Hopefully we aren't processing | |
22259 | trash data, but since we must specifically ignore things | |
22260 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 22261 | this point. */ |
b98664d3 | 22262 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 22263 | dwarf_tag_name (die->tag)); |
c906108c SS |
22264 | break; |
22265 | } | |
df8a16a1 | 22266 | |
e37fd15a SW |
22267 | if (suppress_add) |
22268 | { | |
22269 | sym->hash_next = objfile->template_symbols; | |
22270 | objfile->template_symbols = sym; | |
22271 | list_to_add = NULL; | |
22272 | } | |
22273 | ||
22274 | if (list_to_add != NULL) | |
d3cb6808 | 22275 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 22276 | |
df8a16a1 DJ |
22277 | /* For the benefit of old versions of GCC, check for anonymous |
22278 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 22279 | if (!cu->processing_has_namespace_info |
94af9270 | 22280 | && cu->language == language_cplus) |
c24bdb02 | 22281 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
22282 | } |
22283 | return (sym); | |
22284 | } | |
22285 | ||
98bfdba5 PA |
22286 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
22287 | zero-extend it as appropriate for the symbol's type. The DWARF | |
22288 | standard (v4) is not entirely clear about the meaning of using | |
22289 | DW_FORM_dataN for a constant with a signed type, where the type is | |
22290 | wider than the data. The conclusion of a discussion on the DWARF | |
22291 | list was that this is unspecified. We choose to always zero-extend | |
22292 | because that is the interpretation long in use by GCC. */ | |
c906108c | 22293 | |
98bfdba5 | 22294 | static gdb_byte * |
ff39bb5e | 22295 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 22296 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 22297 | { |
5e22e966 | 22298 | struct objfile *objfile = cu->per_objfile->objfile; |
e17a4113 UW |
22299 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
22300 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
529908cb | 22301 | LONGEST l = attr->constant_value (0); |
98bfdba5 PA |
22302 | |
22303 | if (bits < sizeof (*value) * 8) | |
22304 | { | |
22305 | l &= ((LONGEST) 1 << bits) - 1; | |
22306 | *value = l; | |
22307 | } | |
22308 | else if (bits == sizeof (*value) * 8) | |
22309 | *value = l; | |
22310 | else | |
22311 | { | |
224c3ddb | 22312 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
22313 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
22314 | return bytes; | |
22315 | } | |
22316 | ||
22317 | return NULL; | |
22318 | } | |
22319 | ||
22320 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
22321 | the value does not fit in *VALUE, set *BYTES - either already | |
22322 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
22323 | or, set *BATON, if we translated the constant to a location | |
22324 | expression. */ | |
22325 | ||
22326 | static void | |
ff39bb5e | 22327 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
22328 | const char *name, struct obstack *obstack, |
22329 | struct dwarf2_cu *cu, | |
d521ce57 | 22330 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
22331 | struct dwarf2_locexpr_baton **baton) |
22332 | { | |
5e22e966 | 22333 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 22334 | struct objfile *objfile = per_objfile->objfile; |
98bfdba5 | 22335 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 22336 | struct dwarf_block *blk; |
98bfdba5 PA |
22337 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
22338 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
22339 | ||
22340 | *value = 0; | |
22341 | *bytes = NULL; | |
22342 | *baton = NULL; | |
c906108c SS |
22343 | |
22344 | switch (attr->form) | |
22345 | { | |
22346 | case DW_FORM_addr: | |
336d760d | 22347 | case DW_FORM_addrx: |
3019eac3 | 22348 | case DW_FORM_GNU_addr_index: |
ac56253d | 22349 | { |
ac56253d TT |
22350 | gdb_byte *data; |
22351 | ||
98bfdba5 PA |
22352 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
22353 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 22354 | cu_header->addr_size, |
98bfdba5 | 22355 | TYPE_LENGTH (type)); |
ac56253d TT |
22356 | /* Symbols of this form are reasonably rare, so we just |
22357 | piggyback on the existing location code rather than writing | |
22358 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 22359 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
a50264ba | 22360 | (*baton)->per_objfile = per_objfile; |
98bfdba5 PA |
22361 | (*baton)->per_cu = cu->per_cu; |
22362 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 22363 | |
98bfdba5 | 22364 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 22365 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 22366 | (*baton)->data = data; |
ac56253d TT |
22367 | |
22368 | data[0] = DW_OP_addr; | |
22369 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
36d378cf | 22370 | byte_order, attr->as_address ()); |
ac56253d | 22371 | data[cu_header->addr_size + 1] = DW_OP_stack_value; |
ac56253d | 22372 | } |
c906108c | 22373 | break; |
4ac36638 | 22374 | case DW_FORM_string: |
93b5768b | 22375 | case DW_FORM_strp: |
cf532bd1 | 22376 | case DW_FORM_strx: |
3019eac3 | 22377 | case DW_FORM_GNU_str_index: |
36586728 | 22378 | case DW_FORM_GNU_strp_alt: |
c6481205 | 22379 | /* The string is already allocated on the objfile obstack, point |
98bfdba5 | 22380 | directly to it. */ |
2c830f54 | 22381 | *bytes = (const gdb_byte *) attr->as_string (); |
93b5768b | 22382 | break; |
c906108c SS |
22383 | case DW_FORM_block1: |
22384 | case DW_FORM_block2: | |
22385 | case DW_FORM_block4: | |
22386 | case DW_FORM_block: | |
2dc7f7b3 | 22387 | case DW_FORM_exprloc: |
0224619f | 22388 | case DW_FORM_data16: |
9d2246fc | 22389 | blk = attr->as_block (); |
98bfdba5 PA |
22390 | if (TYPE_LENGTH (type) != blk->size) |
22391 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
22392 | TYPE_LENGTH (type)); | |
22393 | *bytes = blk->data; | |
c906108c | 22394 | break; |
2df3850c JM |
22395 | |
22396 | /* The DW_AT_const_value attributes are supposed to carry the | |
22397 | symbol's value "represented as it would be on the target | |
22398 | architecture." By the time we get here, it's already been | |
22399 | converted to host endianness, so we just need to sign- or | |
22400 | zero-extend it as appropriate. */ | |
22401 | case DW_FORM_data1: | |
3aef2284 | 22402 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 22403 | break; |
c906108c | 22404 | case DW_FORM_data2: |
3aef2284 | 22405 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 22406 | break; |
c906108c | 22407 | case DW_FORM_data4: |
3aef2284 | 22408 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 22409 | break; |
c906108c | 22410 | case DW_FORM_data8: |
3aef2284 | 22411 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
22412 | break; |
22413 | ||
c906108c | 22414 | case DW_FORM_sdata: |
663c44ac | 22415 | case DW_FORM_implicit_const: |
1bc397c5 | 22416 | *value = attr->as_signed (); |
2df3850c JM |
22417 | break; |
22418 | ||
c906108c | 22419 | case DW_FORM_udata: |
529908cb | 22420 | *value = attr->as_unsigned (); |
c906108c | 22421 | break; |
2df3850c | 22422 | |
c906108c | 22423 | default: |
b98664d3 | 22424 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 22425 | dwarf_form_name (attr->form)); |
98bfdba5 | 22426 | *value = 0; |
c906108c SS |
22427 | break; |
22428 | } | |
22429 | } | |
22430 | ||
2df3850c | 22431 | |
98bfdba5 PA |
22432 | /* Copy constant value from an attribute to a symbol. */ |
22433 | ||
2df3850c | 22434 | static void |
ff39bb5e | 22435 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 22436 | struct dwarf2_cu *cu) |
2df3850c | 22437 | { |
5e22e966 | 22438 | struct objfile *objfile = cu->per_objfile->objfile; |
12df843f | 22439 | LONGEST value; |
d521ce57 | 22440 | const gdb_byte *bytes; |
98bfdba5 | 22441 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 22442 | |
98bfdba5 | 22443 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 22444 | sym->print_name (), |
98bfdba5 PA |
22445 | &objfile->objfile_obstack, cu, |
22446 | &value, &bytes, &baton); | |
2df3850c | 22447 | |
98bfdba5 PA |
22448 | if (baton != NULL) |
22449 | { | |
98bfdba5 | 22450 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 22451 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
22452 | } |
22453 | else if (bytes != NULL) | |
22454 | { | |
22455 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 22456 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
22457 | } |
22458 | else | |
22459 | { | |
22460 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 22461 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 22462 | } |
2df3850c JM |
22463 | } |
22464 | ||
c906108c SS |
22465 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
22466 | ||
22467 | static struct type * | |
e7c27a73 | 22468 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22469 | { |
c906108c | 22470 | struct attribute *type_attr; |
c906108c | 22471 | |
e142c38c | 22472 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
22473 | if (!type_attr) |
22474 | { | |
5e22e966 | 22475 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22476 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 22477 | return objfile_type (objfile)->builtin_void; |
c906108c | 22478 | } |
348e048f | 22479 | |
673bfd45 | 22480 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22481 | } |
22482 | ||
b4ba55a1 JB |
22483 | /* True iff CU's producer generates GNAT Ada auxiliary information |
22484 | that allows to find parallel types through that information instead | |
22485 | of having to do expensive parallel lookups by type name. */ | |
22486 | ||
22487 | static int | |
22488 | need_gnat_info (struct dwarf2_cu *cu) | |
22489 | { | |
de4cb04a JB |
22490 | /* Assume that the Ada compiler was GNAT, which always produces |
22491 | the auxiliary information. */ | |
22492 | return (cu->language == language_ada); | |
b4ba55a1 JB |
22493 | } |
22494 | ||
b4ba55a1 JB |
22495 | /* Return the auxiliary type of the die in question using its |
22496 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
22497 | attribute is not present. */ | |
22498 | ||
22499 | static struct type * | |
22500 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
22501 | { | |
b4ba55a1 | 22502 | struct attribute *type_attr; |
b4ba55a1 JB |
22503 | |
22504 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
22505 | if (!type_attr) | |
22506 | return NULL; | |
22507 | ||
673bfd45 | 22508 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
22509 | } |
22510 | ||
22511 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
22512 | descriptive type accordingly. */ | |
22513 | ||
22514 | static void | |
22515 | set_descriptive_type (struct type *type, struct die_info *die, | |
22516 | struct dwarf2_cu *cu) | |
22517 | { | |
22518 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
22519 | ||
22520 | if (descriptive_type) | |
22521 | { | |
22522 | ALLOCATE_GNAT_AUX_TYPE (type); | |
22523 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
22524 | } | |
22525 | } | |
22526 | ||
c906108c SS |
22527 | /* Return the containing type of the die in question using its |
22528 | DW_AT_containing_type attribute. */ | |
22529 | ||
22530 | static struct type * | |
e7c27a73 | 22531 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22532 | { |
c906108c | 22533 | struct attribute *type_attr; |
5e22e966 | 22534 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22535 | |
e142c38c | 22536 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
22537 | if (!type_attr) |
22538 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 22539 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 22540 | |
673bfd45 | 22541 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22542 | } |
22543 | ||
ac9ec31b DE |
22544 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
22545 | ||
22546 | static struct type * | |
22547 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
22548 | { | |
976ca316 SM |
22549 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22550 | struct objfile *objfile = per_objfile->objfile; | |
528e1572 | 22551 | char *saved; |
ac9ec31b | 22552 | |
528e1572 SM |
22553 | std::string message |
22554 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
22555 | objfile_name (objfile), | |
22556 | sect_offset_str (cu->header.sect_off), | |
22557 | sect_offset_str (die->sect_off)); | |
efba19b0 | 22558 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 22559 | |
19f392bc | 22560 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22561 | } |
22562 | ||
673bfd45 | 22563 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22564 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22565 | DW_AT_containing_type. | |
673bfd45 DE |
22566 | If there is no type substitute an error marker. */ |
22567 | ||
c906108c | 22568 | static struct type * |
ff39bb5e | 22569 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22570 | struct dwarf2_cu *cu) |
c906108c | 22571 | { |
976ca316 SM |
22572 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22573 | struct objfile *objfile = per_objfile->objfile; | |
f792889a DJ |
22574 | struct type *this_type; |
22575 | ||
ac9ec31b DE |
22576 | gdb_assert (attr->name == DW_AT_type |
22577 | || attr->name == DW_AT_GNAT_descriptive_type | |
22578 | || attr->name == DW_AT_containing_type); | |
22579 | ||
673bfd45 DE |
22580 | /* First see if we have it cached. */ |
22581 | ||
36586728 TT |
22582 | if (attr->form == DW_FORM_GNU_ref_alt) |
22583 | { | |
22584 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 22585 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 22586 | |
976ca316 SM |
22587 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, per_objfile); |
22588 | this_type = get_die_type_at_offset (sect_off, per_cu, per_objfile); | |
36586728 | 22589 | } |
cd6c91b4 | 22590 | else if (attr->form_is_ref ()) |
673bfd45 | 22591 | { |
0826b30a | 22592 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 22593 | |
976ca316 | 22594 | this_type = get_die_type_at_offset (sect_off, cu->per_cu, per_objfile); |
673bfd45 | 22595 | } |
55f1336d | 22596 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22597 | { |
630ed6b9 | 22598 | ULONGEST signature = attr->as_signature (); |
673bfd45 | 22599 | |
ac9ec31b | 22600 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22601 | } |
22602 | else | |
22603 | { | |
b98664d3 | 22604 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22605 | " at %s [in module %s]"), |
22606 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22607 | objfile_name (objfile)); |
ac9ec31b | 22608 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22609 | } |
22610 | ||
22611 | /* If not cached we need to read it in. */ | |
22612 | ||
22613 | if (this_type == NULL) | |
22614 | { | |
ac9ec31b | 22615 | struct die_info *type_die = NULL; |
673bfd45 DE |
22616 | struct dwarf2_cu *type_cu = cu; |
22617 | ||
cd6c91b4 | 22618 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22619 | type_die = follow_die_ref (die, attr, &type_cu); |
22620 | if (type_die == NULL) | |
22621 | return build_error_marker_type (cu, die); | |
22622 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22623 | from an inter-CU reference and the type's CU got expanded before |
22624 | ours. */ | |
ac9ec31b | 22625 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22626 | } |
22627 | ||
22628 | /* If we still don't have a type use an error marker. */ | |
22629 | ||
22630 | if (this_type == NULL) | |
ac9ec31b | 22631 | return build_error_marker_type (cu, die); |
673bfd45 | 22632 | |
f792889a | 22633 | return this_type; |
c906108c SS |
22634 | } |
22635 | ||
673bfd45 DE |
22636 | /* Return the type in DIE, CU. |
22637 | Returns NULL for invalid types. | |
22638 | ||
02142a6c | 22639 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22640 | and only reads the die in if necessary. |
22641 | ||
22642 | NOTE: This can be called when reading in partial or full symbols. */ | |
22643 | ||
f792889a | 22644 | static struct type * |
e7c27a73 | 22645 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22646 | { |
f792889a DJ |
22647 | struct type *this_type; |
22648 | ||
22649 | this_type = get_die_type (die, cu); | |
22650 | if (this_type) | |
22651 | return this_type; | |
22652 | ||
673bfd45 DE |
22653 | return read_type_die_1 (die, cu); |
22654 | } | |
22655 | ||
22656 | /* Read the type in DIE, CU. | |
22657 | Returns NULL for invalid types. */ | |
22658 | ||
22659 | static struct type * | |
22660 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22661 | { | |
22662 | struct type *this_type = NULL; | |
22663 | ||
c906108c SS |
22664 | switch (die->tag) |
22665 | { | |
22666 | case DW_TAG_class_type: | |
680b30c7 | 22667 | case DW_TAG_interface_type: |
c906108c SS |
22668 | case DW_TAG_structure_type: |
22669 | case DW_TAG_union_type: | |
f792889a | 22670 | this_type = read_structure_type (die, cu); |
c906108c SS |
22671 | break; |
22672 | case DW_TAG_enumeration_type: | |
f792889a | 22673 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22674 | break; |
22675 | case DW_TAG_subprogram: | |
22676 | case DW_TAG_subroutine_type: | |
edb3359d | 22677 | case DW_TAG_inlined_subroutine: |
f792889a | 22678 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22679 | break; |
22680 | case DW_TAG_array_type: | |
f792889a | 22681 | this_type = read_array_type (die, cu); |
c906108c | 22682 | break; |
72019c9c | 22683 | case DW_TAG_set_type: |
f792889a | 22684 | this_type = read_set_type (die, cu); |
72019c9c | 22685 | break; |
c906108c | 22686 | case DW_TAG_pointer_type: |
f792889a | 22687 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22688 | break; |
22689 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22690 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22691 | break; |
22692 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22693 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22694 | break; | |
22695 | case DW_TAG_rvalue_reference_type: | |
22696 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22697 | break; |
22698 | case DW_TAG_const_type: | |
f792889a | 22699 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22700 | break; |
22701 | case DW_TAG_volatile_type: | |
f792889a | 22702 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22703 | break; |
06d66ee9 TT |
22704 | case DW_TAG_restrict_type: |
22705 | this_type = read_tag_restrict_type (die, cu); | |
22706 | break; | |
c906108c | 22707 | case DW_TAG_string_type: |
f792889a | 22708 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22709 | break; |
22710 | case DW_TAG_typedef: | |
f792889a | 22711 | this_type = read_typedef (die, cu); |
c906108c | 22712 | break; |
a02abb62 | 22713 | case DW_TAG_subrange_type: |
f792889a | 22714 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22715 | break; |
c906108c | 22716 | case DW_TAG_base_type: |
f792889a | 22717 | this_type = read_base_type (die, cu); |
c906108c | 22718 | break; |
81a17f79 | 22719 | case DW_TAG_unspecified_type: |
f792889a | 22720 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22721 | break; |
0114d602 DJ |
22722 | case DW_TAG_namespace: |
22723 | this_type = read_namespace_type (die, cu); | |
22724 | break; | |
f55ee35c JK |
22725 | case DW_TAG_module: |
22726 | this_type = read_module_type (die, cu); | |
22727 | break; | |
a2c2acaf MW |
22728 | case DW_TAG_atomic_type: |
22729 | this_type = read_tag_atomic_type (die, cu); | |
22730 | break; | |
c906108c | 22731 | default: |
b98664d3 | 22732 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 22733 | dwarf_tag_name (die->tag)); |
c906108c SS |
22734 | break; |
22735 | } | |
63d06c5c | 22736 | |
f792889a | 22737 | return this_type; |
63d06c5c DC |
22738 | } |
22739 | ||
abc72ce4 DE |
22740 | /* See if we can figure out if the class lives in a namespace. We do |
22741 | this by looking for a member function; its demangled name will | |
22742 | contain namespace info, if there is any. | |
22743 | Return the computed name or NULL. | |
22744 | Space for the result is allocated on the objfile's obstack. | |
22745 | This is the full-die version of guess_partial_die_structure_name. | |
22746 | In this case we know DIE has no useful parent. */ | |
22747 | ||
43816ebc | 22748 | static const char * |
abc72ce4 DE |
22749 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
22750 | { | |
22751 | struct die_info *spec_die; | |
22752 | struct dwarf2_cu *spec_cu; | |
22753 | struct die_info *child; | |
5e22e966 | 22754 | struct objfile *objfile = cu->per_objfile->objfile; |
abc72ce4 DE |
22755 | |
22756 | spec_cu = cu; | |
22757 | spec_die = die_specification (die, &spec_cu); | |
22758 | if (spec_die != NULL) | |
22759 | { | |
22760 | die = spec_die; | |
22761 | cu = spec_cu; | |
22762 | } | |
22763 | ||
22764 | for (child = die->child; | |
22765 | child != NULL; | |
22766 | child = child->sibling) | |
22767 | { | |
22768 | if (child->tag == DW_TAG_subprogram) | |
22769 | { | |
73b9be8b | 22770 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22771 | |
7d45c7c3 | 22772 | if (linkage_name != NULL) |
abc72ce4 | 22773 | { |
43816ebc | 22774 | gdb::unique_xmalloc_ptr<char> actual_name |
eff93b4d | 22775 | (cu->language_defn->class_name_from_physname (linkage_name)); |
43816ebc | 22776 | const char *name = NULL; |
abc72ce4 DE |
22777 | |
22778 | if (actual_name != NULL) | |
22779 | { | |
15d034d0 | 22780 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22781 | |
22782 | if (die_name != NULL | |
43816ebc | 22783 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
22784 | { |
22785 | /* Strip off the class name from the full name. | |
22786 | We want the prefix. */ | |
22787 | int die_name_len = strlen (die_name); | |
43816ebc TT |
22788 | int actual_name_len = strlen (actual_name.get ()); |
22789 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
22790 | |
22791 | /* Test for '::' as a sanity check. */ | |
22792 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 22793 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 22794 | name = obstack_strndup ( |
e3b94546 | 22795 | &objfile->per_bfd->storage_obstack, |
43816ebc | 22796 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22797 | } |
22798 | } | |
abc72ce4 DE |
22799 | return name; |
22800 | } | |
22801 | } | |
22802 | } | |
22803 | ||
22804 | return NULL; | |
22805 | } | |
22806 | ||
96408a79 SA |
22807 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22808 | prefix part in such case. See | |
22809 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22810 | ||
a121b7c1 | 22811 | static const char * |
96408a79 SA |
22812 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22813 | { | |
22814 | struct attribute *attr; | |
e6a959d6 | 22815 | const char *base; |
96408a79 SA |
22816 | |
22817 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22818 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22819 | return NULL; | |
22820 | ||
7d45c7c3 | 22821 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22822 | return NULL; |
22823 | ||
73b9be8b | 22824 | attr = dw2_linkage_name_attr (die, cu); |
2c830f54 TT |
22825 | const char *attr_name = attr->as_string (); |
22826 | if (attr == NULL || attr_name == NULL) | |
96408a79 SA |
22827 | return NULL; |
22828 | ||
22829 | /* dwarf2_name had to be already called. */ | |
3b64bf15 | 22830 | gdb_assert (attr->canonical_string_p ()); |
96408a79 SA |
22831 | |
22832 | /* Strip the base name, keep any leading namespaces/classes. */ | |
2c830f54 TT |
22833 | base = strrchr (attr_name, ':'); |
22834 | if (base == NULL || base == attr_name || base[-1] != ':') | |
96408a79 SA |
22835 | return ""; |
22836 | ||
5e22e966 | 22837 | struct objfile *objfile = cu->per_objfile->objfile; |
0cf9feb9 | 22838 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
2c830f54 TT |
22839 | attr_name, |
22840 | &base[-1] - attr_name); | |
96408a79 SA |
22841 | } |
22842 | ||
fdde2d81 | 22843 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22844 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22845 | |
0114d602 DJ |
22846 | For example, if we're within the method foo() in the following |
22847 | code: | |
22848 | ||
22849 | namespace N { | |
22850 | class C { | |
22851 | void foo () { | |
22852 | } | |
22853 | }; | |
22854 | } | |
22855 | ||
22856 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22857 | |
0d5cff50 | 22858 | static const char * |
e142c38c | 22859 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22860 | { |
976ca316 | 22861 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
0114d602 DJ |
22862 | struct die_info *parent, *spec_die; |
22863 | struct dwarf2_cu *spec_cu; | |
22864 | struct type *parent_type; | |
a121b7c1 | 22865 | const char *retval; |
63d06c5c | 22866 | |
9c37b5ae | 22867 | if (cu->language != language_cplus |
c44af4eb TT |
22868 | && cu->language != language_fortran && cu->language != language_d |
22869 | && cu->language != language_rust) | |
0114d602 DJ |
22870 | return ""; |
22871 | ||
96408a79 SA |
22872 | retval = anonymous_struct_prefix (die, cu); |
22873 | if (retval) | |
22874 | return retval; | |
22875 | ||
0114d602 DJ |
22876 | /* We have to be careful in the presence of DW_AT_specification. |
22877 | For example, with GCC 3.4, given the code | |
22878 | ||
22879 | namespace N { | |
22880 | void foo() { | |
22881 | // Definition of N::foo. | |
22882 | } | |
22883 | } | |
22884 | ||
22885 | then we'll have a tree of DIEs like this: | |
22886 | ||
22887 | 1: DW_TAG_compile_unit | |
22888 | 2: DW_TAG_namespace // N | |
22889 | 3: DW_TAG_subprogram // declaration of N::foo | |
22890 | 4: DW_TAG_subprogram // definition of N::foo | |
22891 | DW_AT_specification // refers to die #3 | |
22892 | ||
22893 | Thus, when processing die #4, we have to pretend that we're in | |
22894 | the context of its DW_AT_specification, namely the contex of die | |
22895 | #3. */ | |
22896 | spec_cu = cu; | |
22897 | spec_die = die_specification (die, &spec_cu); | |
22898 | if (spec_die == NULL) | |
22899 | parent = die->parent; | |
22900 | else | |
63d06c5c | 22901 | { |
0114d602 DJ |
22902 | parent = spec_die->parent; |
22903 | cu = spec_cu; | |
63d06c5c | 22904 | } |
0114d602 DJ |
22905 | |
22906 | if (parent == NULL) | |
22907 | return ""; | |
98bfdba5 PA |
22908 | else if (parent->building_fullname) |
22909 | { | |
22910 | const char *name; | |
22911 | const char *parent_name; | |
22912 | ||
22913 | /* It has been seen on RealView 2.2 built binaries, | |
22914 | DW_TAG_template_type_param types actually _defined_ as | |
22915 | children of the parent class: | |
22916 | ||
22917 | enum E {}; | |
22918 | template class <class Enum> Class{}; | |
22919 | Class<enum E> class_e; | |
22920 | ||
dda83cd7 SM |
22921 | 1: DW_TAG_class_type (Class) |
22922 | 2: DW_TAG_enumeration_type (E) | |
22923 | 3: DW_TAG_enumerator (enum1:0) | |
22924 | 3: DW_TAG_enumerator (enum2:1) | |
22925 | ... | |
22926 | 2: DW_TAG_template_type_param | |
22927 | DW_AT_type DW_FORM_ref_udata (E) | |
98bfdba5 PA |
22928 | |
22929 | Besides being broken debug info, it can put GDB into an | |
22930 | infinite loop. Consider: | |
22931 | ||
22932 | When we're building the full name for Class<E>, we'll start | |
22933 | at Class, and go look over its template type parameters, | |
22934 | finding E. We'll then try to build the full name of E, and | |
22935 | reach here. We're now trying to build the full name of E, | |
22936 | and look over the parent DIE for containing scope. In the | |
22937 | broken case, if we followed the parent DIE of E, we'd again | |
22938 | find Class, and once again go look at its template type | |
22939 | arguments, etc., etc. Simply don't consider such parent die | |
22940 | as source-level parent of this die (it can't be, the language | |
22941 | doesn't allow it), and break the loop here. */ | |
22942 | name = dwarf2_name (die, cu); | |
22943 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 22944 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
22945 | name ? name : "<unknown>", |
22946 | parent_name ? parent_name : "<unknown>"); | |
22947 | return ""; | |
22948 | } | |
63d06c5c | 22949 | else |
0114d602 DJ |
22950 | switch (parent->tag) |
22951 | { | |
63d06c5c | 22952 | case DW_TAG_namespace: |
0114d602 | 22953 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22954 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22955 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22956 | Work around this problem here. */ | |
22957 | if (cu->language == language_cplus | |
7d93a1e0 | 22958 | && strcmp (parent_type->name (), "::") == 0) |
acebe513 | 22959 | return ""; |
0114d602 | 22960 | /* We give a name to even anonymous namespaces. */ |
7d93a1e0 | 22961 | return parent_type->name (); |
63d06c5c | 22962 | case DW_TAG_class_type: |
680b30c7 | 22963 | case DW_TAG_interface_type: |
63d06c5c | 22964 | case DW_TAG_structure_type: |
0114d602 | 22965 | case DW_TAG_union_type: |
f55ee35c | 22966 | case DW_TAG_module: |
0114d602 | 22967 | parent_type = read_type_die (parent, cu); |
7d93a1e0 SM |
22968 | if (parent_type->name () != NULL) |
22969 | return parent_type->name (); | |
0114d602 DJ |
22970 | else |
22971 | /* An anonymous structure is only allowed non-static data | |
22972 | members; no typedefs, no member functions, et cetera. | |
22973 | So it does not need a prefix. */ | |
22974 | return ""; | |
abc72ce4 | 22975 | case DW_TAG_compile_unit: |
95554aad | 22976 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22977 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22978 | if (cu->language == language_cplus | |
976ca316 | 22979 | && !per_objfile->per_bfd->types.empty () |
abc72ce4 DE |
22980 | && die->child != NULL |
22981 | && (die->tag == DW_TAG_class_type | |
22982 | || die->tag == DW_TAG_structure_type | |
22983 | || die->tag == DW_TAG_union_type)) | |
22984 | { | |
43816ebc | 22985 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
22986 | if (name != NULL) |
22987 | return name; | |
22988 | } | |
22989 | return ""; | |
0a4b0913 AB |
22990 | case DW_TAG_subprogram: |
22991 | /* Nested subroutines in Fortran get a prefix with the name | |
22992 | of the parent's subroutine. */ | |
22993 | if (cu->language == language_fortran) | |
22994 | { | |
22995 | if ((die->tag == DW_TAG_subprogram) | |
22996 | && (dwarf2_name (parent, cu) != NULL)) | |
22997 | return dwarf2_name (parent, cu); | |
22998 | } | |
22999 | return determine_prefix (parent, cu); | |
3d567982 TT |
23000 | case DW_TAG_enumeration_type: |
23001 | parent_type = read_type_die (parent, cu); | |
23002 | if (TYPE_DECLARED_CLASS (parent_type)) | |
23003 | { | |
7d93a1e0 SM |
23004 | if (parent_type->name () != NULL) |
23005 | return parent_type->name (); | |
3d567982 TT |
23006 | return ""; |
23007 | } | |
23008 | /* Fall through. */ | |
63d06c5c | 23009 | default: |
8176b9b8 | 23010 | return determine_prefix (parent, cu); |
63d06c5c | 23011 | } |
63d06c5c DC |
23012 | } |
23013 | ||
3e43a32a MS |
23014 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
23015 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
23016 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
23017 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
23018 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 23019 | |
f55ee35c | 23020 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
23021 | |
23022 | static char * | |
f55ee35c | 23023 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
dda83cd7 | 23024 | int physname, struct dwarf2_cu *cu) |
63d06c5c | 23025 | { |
f55ee35c | 23026 | const char *lead = ""; |
5c315b68 | 23027 | const char *sep; |
63d06c5c | 23028 | |
3e43a32a MS |
23029 | if (suffix == NULL || suffix[0] == '\0' |
23030 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 23031 | sep = ""; |
45280282 IB |
23032 | else if (cu->language == language_d) |
23033 | { | |
23034 | /* For D, the 'main' function could be defined in any module, but it | |
23035 | should never be prefixed. */ | |
23036 | if (strcmp (suffix, "D main") == 0) | |
23037 | { | |
23038 | prefix = ""; | |
23039 | sep = ""; | |
23040 | } | |
23041 | else | |
23042 | sep = "."; | |
23043 | } | |
f55ee35c JK |
23044 | else if (cu->language == language_fortran && physname) |
23045 | { | |
23046 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
23047 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
23048 | ||
23049 | lead = "__"; | |
23050 | sep = "_MOD_"; | |
23051 | } | |
987504bb JJ |
23052 | else |
23053 | sep = "::"; | |
63d06c5c | 23054 | |
6dd47d34 DE |
23055 | if (prefix == NULL) |
23056 | prefix = ""; | |
23057 | if (suffix == NULL) | |
23058 | suffix = ""; | |
23059 | ||
987504bb JJ |
23060 | if (obs == NULL) |
23061 | { | |
3e43a32a | 23062 | char *retval |
224c3ddb SM |
23063 | = ((char *) |
23064 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 23065 | |
f55ee35c JK |
23066 | strcpy (retval, lead); |
23067 | strcat (retval, prefix); | |
6dd47d34 DE |
23068 | strcat (retval, sep); |
23069 | strcat (retval, suffix); | |
63d06c5c DC |
23070 | return retval; |
23071 | } | |
987504bb JJ |
23072 | else |
23073 | { | |
23074 | /* We have an obstack. */ | |
f55ee35c | 23075 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 23076 | } |
63d06c5c DC |
23077 | } |
23078 | ||
71c25dea TT |
23079 | /* Get name of a die, return NULL if not found. */ |
23080 | ||
15d034d0 TT |
23081 | static const char * |
23082 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 23083 | struct objfile *objfile) |
71c25dea TT |
23084 | { |
23085 | if (name && cu->language == language_cplus) | |
23086 | { | |
596dc4ad TT |
23087 | gdb::unique_xmalloc_ptr<char> canon_name |
23088 | = cp_canonicalize_string (name); | |
71c25dea | 23089 | |
596dc4ad TT |
23090 | if (canon_name != nullptr) |
23091 | name = objfile->intern (canon_name.get ()); | |
71c25dea TT |
23092 | } |
23093 | ||
23094 | return name; | |
c906108c SS |
23095 | } |
23096 | ||
96553a0c DE |
23097 | /* Get name of a die, return NULL if not found. |
23098 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 23099 | |
15d034d0 | 23100 | static const char * |
e142c38c | 23101 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
23102 | { |
23103 | struct attribute *attr; | |
5e22e966 | 23104 | struct objfile *objfile = cu->per_objfile->objfile; |
9219021c | 23105 | |
e142c38c | 23106 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2c830f54 TT |
23107 | const char *attr_name = attr == nullptr ? nullptr : attr->as_string (); |
23108 | if (attr_name == nullptr | |
96553a0c | 23109 | && die->tag != DW_TAG_namespace |
53832f31 TT |
23110 | && die->tag != DW_TAG_class_type |
23111 | && die->tag != DW_TAG_interface_type | |
23112 | && die->tag != DW_TAG_structure_type | |
23113 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
23114 | return NULL; |
23115 | ||
23116 | switch (die->tag) | |
23117 | { | |
23118 | case DW_TAG_compile_unit: | |
95554aad | 23119 | case DW_TAG_partial_unit: |
71c25dea TT |
23120 | /* Compilation units have a DW_AT_name that is a filename, not |
23121 | a source language identifier. */ | |
23122 | case DW_TAG_enumeration_type: | |
23123 | case DW_TAG_enumerator: | |
23124 | /* These tags always have simple identifiers already; no need | |
23125 | to canonicalize them. */ | |
2c830f54 | 23126 | return attr_name; |
907af001 | 23127 | |
96553a0c | 23128 | case DW_TAG_namespace: |
2c830f54 TT |
23129 | if (attr_name != nullptr) |
23130 | return attr_name; | |
96553a0c DE |
23131 | return CP_ANONYMOUS_NAMESPACE_STR; |
23132 | ||
907af001 UW |
23133 | case DW_TAG_class_type: |
23134 | case DW_TAG_interface_type: | |
23135 | case DW_TAG_structure_type: | |
23136 | case DW_TAG_union_type: | |
23137 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
23138 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
23139 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
23140 | and GCC 4.4. We work around this problem by ignoring these. */ | |
2c830f54 TT |
23141 | if (attr_name != nullptr |
23142 | && (startswith (attr_name, "._") | |
23143 | || startswith (attr_name, "<anonymous"))) | |
907af001 | 23144 | return NULL; |
53832f31 TT |
23145 | |
23146 | /* GCC might emit a nameless typedef that has a linkage name. See | |
23147 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
2c830f54 | 23148 | if (!attr || attr_name == NULL) |
53832f31 | 23149 | { |
73b9be8b | 23150 | attr = dw2_linkage_name_attr (die, cu); |
95eb9e54 | 23151 | attr_name = attr == nullptr ? nullptr : attr->as_string (); |
2c830f54 | 23152 | if (attr == NULL || attr_name == NULL) |
53832f31 TT |
23153 | return NULL; |
23154 | ||
2c830f54 | 23155 | /* Avoid demangling attr_name the second time on a second |
df5c6c50 | 23156 | call for the same DIE. */ |
3b64bf15 | 23157 | if (!attr->canonical_string_p ()) |
53832f31 | 23158 | { |
43816ebc | 23159 | gdb::unique_xmalloc_ptr<char> demangled |
2c830f54 | 23160 | (gdb_demangle (attr_name, DMGL_TYPES)); |
4f180d53 AT |
23161 | if (demangled == nullptr) |
23162 | return nullptr; | |
43816ebc | 23163 | |
c6481205 | 23164 | attr->set_string_canonical (objfile->intern (demangled.get ())); |
95eb9e54 | 23165 | attr_name = attr->as_string (); |
53832f31 | 23166 | } |
67430cd0 | 23167 | |
2c830f54 TT |
23168 | /* Strip any leading namespaces/classes, keep only the |
23169 | base name. DW_AT_name for named DIEs does not | |
23170 | contain the prefixes. */ | |
23171 | const char *base = strrchr (attr_name, ':'); | |
23172 | if (base && base > attr_name && base[-1] == ':') | |
67430cd0 TT |
23173 | return &base[1]; |
23174 | else | |
2c830f54 | 23175 | return attr_name; |
53832f31 | 23176 | } |
907af001 UW |
23177 | break; |
23178 | ||
71c25dea | 23179 | default: |
907af001 UW |
23180 | break; |
23181 | } | |
23182 | ||
3b64bf15 | 23183 | if (!attr->canonical_string_p ()) |
c6481205 TT |
23184 | attr->set_string_canonical (dwarf2_canonicalize_name (attr_name, cu, |
23185 | objfile)); | |
2c830f54 | 23186 | return attr->as_string (); |
9219021c DC |
23187 | } |
23188 | ||
23189 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
23190 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
23191 | containing the return value on output. */ | |
9219021c DC |
23192 | |
23193 | static struct die_info * | |
f2f0e013 | 23194 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
23195 | { |
23196 | struct attribute *attr; | |
9219021c | 23197 | |
f2f0e013 | 23198 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
23199 | if (attr == NULL) |
23200 | return NULL; | |
23201 | ||
f2f0e013 | 23202 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
23203 | } |
23204 | ||
f9aca02d | 23205 | static void |
d97bc12b | 23206 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
23207 | { |
23208 | unsigned int i; | |
23209 | ||
d97bc12b | 23210 | print_spaces (indent, f); |
9d8780f0 | 23211 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 23212 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 23213 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
23214 | |
23215 | if (die->parent != NULL) | |
23216 | { | |
23217 | print_spaces (indent, f); | |
9d8780f0 SM |
23218 | fprintf_unfiltered (f, " parent at offset: %s\n", |
23219 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
23220 | } |
23221 | ||
23222 | print_spaces (indent, f); | |
23223 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 23224 | dwarf_bool_name (die->child != NULL)); |
c906108c | 23225 | |
d97bc12b DE |
23226 | print_spaces (indent, f); |
23227 | fprintf_unfiltered (f, " attributes:\n"); | |
23228 | ||
c906108c SS |
23229 | for (i = 0; i < die->num_attrs; ++i) |
23230 | { | |
d97bc12b DE |
23231 | print_spaces (indent, f); |
23232 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
23233 | dwarf_attr_name (die->attrs[i].name), |
23234 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 23235 | |
c906108c SS |
23236 | switch (die->attrs[i].form) |
23237 | { | |
c906108c | 23238 | case DW_FORM_addr: |
336d760d | 23239 | case DW_FORM_addrx: |
3019eac3 | 23240 | case DW_FORM_GNU_addr_index: |
d97bc12b | 23241 | fprintf_unfiltered (f, "address: "); |
36d378cf | 23242 | fputs_filtered (hex_string (die->attrs[i].as_address ()), f); |
c906108c SS |
23243 | break; |
23244 | case DW_FORM_block2: | |
23245 | case DW_FORM_block4: | |
23246 | case DW_FORM_block: | |
23247 | case DW_FORM_block1: | |
56eb65bd | 23248 | fprintf_unfiltered (f, "block: size %s", |
9d2246fc | 23249 | pulongest (die->attrs[i].as_block ()->size)); |
c906108c | 23250 | break; |
2dc7f7b3 | 23251 | case DW_FORM_exprloc: |
56eb65bd | 23252 | fprintf_unfiltered (f, "expression: size %s", |
9d2246fc | 23253 | pulongest (die->attrs[i].as_block ()->size)); |
2dc7f7b3 | 23254 | break; |
0224619f JK |
23255 | case DW_FORM_data16: |
23256 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
23257 | break; | |
4568ecf9 DE |
23258 | case DW_FORM_ref_addr: |
23259 | fprintf_unfiltered (f, "ref address: "); | |
529908cb | 23260 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
4568ecf9 | 23261 | break; |
36586728 TT |
23262 | case DW_FORM_GNU_ref_alt: |
23263 | fprintf_unfiltered (f, "alt ref address: "); | |
529908cb | 23264 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
36586728 | 23265 | break; |
10b3939b DJ |
23266 | case DW_FORM_ref1: |
23267 | case DW_FORM_ref2: | |
23268 | case DW_FORM_ref4: | |
4568ecf9 DE |
23269 | case DW_FORM_ref8: |
23270 | case DW_FORM_ref_udata: | |
d97bc12b | 23271 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
529908cb | 23272 | (long) (die->attrs[i].as_unsigned ())); |
10b3939b | 23273 | break; |
c906108c SS |
23274 | case DW_FORM_data1: |
23275 | case DW_FORM_data2: | |
23276 | case DW_FORM_data4: | |
ce5d95e1 | 23277 | case DW_FORM_data8: |
c906108c | 23278 | case DW_FORM_udata: |
43bbcdc2 | 23279 | fprintf_unfiltered (f, "constant: %s", |
529908cb | 23280 | pulongest (die->attrs[i].as_unsigned ())); |
c906108c | 23281 | break; |
2dc7f7b3 TT |
23282 | case DW_FORM_sec_offset: |
23283 | fprintf_unfiltered (f, "section offset: %s", | |
529908cb | 23284 | pulongest (die->attrs[i].as_unsigned ())); |
2dc7f7b3 | 23285 | break; |
55f1336d | 23286 | case DW_FORM_ref_sig8: |
ac9ec31b | 23287 | fprintf_unfiltered (f, "signature: %s", |
630ed6b9 | 23288 | hex_string (die->attrs[i].as_signature ())); |
348e048f | 23289 | break; |
c906108c | 23290 | case DW_FORM_string: |
4bdf3d34 | 23291 | case DW_FORM_strp: |
43988095 | 23292 | case DW_FORM_line_strp: |
cf532bd1 | 23293 | case DW_FORM_strx: |
3019eac3 | 23294 | case DW_FORM_GNU_str_index: |
36586728 | 23295 | case DW_FORM_GNU_strp_alt: |
8285870a | 23296 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c6481205 TT |
23297 | die->attrs[i].as_string () |
23298 | ? die->attrs[i].as_string () : "", | |
23299 | die->attrs[i].canonical_string_p () ? "is" : "not"); | |
c906108c SS |
23300 | break; |
23301 | case DW_FORM_flag: | |
c45bc3f8 | 23302 | if (die->attrs[i].as_boolean ()) |
d97bc12b | 23303 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 23304 | else |
d97bc12b | 23305 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 23306 | break; |
2dc7f7b3 TT |
23307 | case DW_FORM_flag_present: |
23308 | fprintf_unfiltered (f, "flag: TRUE"); | |
23309 | break; | |
a8329558 | 23310 | case DW_FORM_indirect: |
0963b4bd MS |
23311 | /* The reader will have reduced the indirect form to |
23312 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 23313 | fprintf_unfiltered (f, |
3e43a32a | 23314 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 23315 | break; |
1bc397c5 | 23316 | case DW_FORM_sdata: |
663c44ac JK |
23317 | case DW_FORM_implicit_const: |
23318 | fprintf_unfiltered (f, "constant: %s", | |
1bc397c5 | 23319 | plongest (die->attrs[i].as_signed ())); |
663c44ac | 23320 | break; |
c906108c | 23321 | default: |
d97bc12b | 23322 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 23323 | die->attrs[i].form); |
d97bc12b | 23324 | break; |
c906108c | 23325 | } |
d97bc12b | 23326 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
23327 | } |
23328 | } | |
23329 | ||
f9aca02d | 23330 | static void |
d97bc12b | 23331 | dump_die_for_error (struct die_info *die) |
c906108c | 23332 | { |
d97bc12b DE |
23333 | dump_die_shallow (gdb_stderr, 0, die); |
23334 | } | |
23335 | ||
23336 | static void | |
23337 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
23338 | { | |
23339 | int indent = level * 4; | |
23340 | ||
23341 | gdb_assert (die != NULL); | |
23342 | ||
23343 | if (level >= max_level) | |
23344 | return; | |
23345 | ||
23346 | dump_die_shallow (f, indent, die); | |
23347 | ||
23348 | if (die->child != NULL) | |
c906108c | 23349 | { |
d97bc12b DE |
23350 | print_spaces (indent, f); |
23351 | fprintf_unfiltered (f, " Children:"); | |
23352 | if (level + 1 < max_level) | |
23353 | { | |
23354 | fprintf_unfiltered (f, "\n"); | |
23355 | dump_die_1 (f, level + 1, max_level, die->child); | |
23356 | } | |
23357 | else | |
23358 | { | |
3e43a32a MS |
23359 | fprintf_unfiltered (f, |
23360 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
23361 | } |
23362 | } | |
23363 | ||
23364 | if (die->sibling != NULL && level > 0) | |
23365 | { | |
23366 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
23367 | } |
23368 | } | |
23369 | ||
d97bc12b DE |
23370 | /* This is called from the pdie macro in gdbinit.in. |
23371 | It's not static so gcc will keep a copy callable from gdb. */ | |
23372 | ||
23373 | void | |
23374 | dump_die (struct die_info *die, int max_level) | |
23375 | { | |
23376 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
23377 | } | |
23378 | ||
f9aca02d | 23379 | static void |
51545339 | 23380 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 23381 | { |
51545339 | 23382 | void **slot; |
c906108c | 23383 | |
9c541725 PA |
23384 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
23385 | to_underlying (die->sect_off), | |
b64f50a1 | 23386 | INSERT); |
51545339 DJ |
23387 | |
23388 | *slot = die; | |
c906108c SS |
23389 | } |
23390 | ||
348e048f DE |
23391 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
23392 | On entry *REF_CU is the CU of SRC_DIE. | |
23393 | On exit *REF_CU is the CU of the result. */ | |
23394 | ||
23395 | static struct die_info * | |
ff39bb5e | 23396 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
23397 | struct dwarf2_cu **ref_cu) |
23398 | { | |
23399 | struct die_info *die; | |
23400 | ||
cd6c91b4 | 23401 | if (attr->form_is_ref ()) |
348e048f | 23402 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 23403 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
23404 | die = follow_die_sig (src_die, attr, ref_cu); |
23405 | else | |
23406 | { | |
23407 | dump_die_for_error (src_die); | |
23408 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
5e22e966 | 23409 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
348e048f DE |
23410 | } |
23411 | ||
23412 | return die; | |
03dd20cc DJ |
23413 | } |
23414 | ||
5c631832 | 23415 | /* Follow reference OFFSET. |
673bfd45 DE |
23416 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
23417 | On exit *REF_CU is the CU of the result. | |
23418 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 23419 | |
f9aca02d | 23420 | static struct die_info * |
9c541725 | 23421 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 23422 | struct dwarf2_cu **ref_cu) |
c906108c | 23423 | { |
10b3939b | 23424 | struct die_info temp_die; |
f2f0e013 | 23425 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
976ca316 | 23426 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10b3939b | 23427 | |
348e048f DE |
23428 | gdb_assert (cu->per_cu != NULL); |
23429 | ||
98bfdba5 PA |
23430 | target_cu = cu; |
23431 | ||
3019eac3 | 23432 | if (cu->per_cu->is_debug_types) |
348e048f DE |
23433 | { |
23434 | /* .debug_types CUs cannot reference anything outside their CU. | |
23435 | If they need to, they have to reference a signatured type via | |
55f1336d | 23436 | DW_FORM_ref_sig8. */ |
4057dfde | 23437 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 23438 | return NULL; |
348e048f | 23439 | } |
36586728 | 23440 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 23441 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
23442 | { |
23443 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 23444 | |
9c541725 | 23445 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
976ca316 | 23446 | per_objfile); |
03dd20cc DJ |
23447 | |
23448 | /* If necessary, add it to the queue and load its DIEs. */ | |
976ca316 | 23449 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
4a636814 SM |
23450 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
23451 | false, cu->language); | |
03dd20cc | 23452 | |
976ca316 | 23453 | target_cu = per_objfile->get_cu (per_cu); |
10b3939b | 23454 | } |
98bfdba5 PA |
23455 | else if (cu->dies == NULL) |
23456 | { | |
23457 | /* We're loading full DIEs during partial symbol reading. */ | |
976ca316 | 23458 | gdb_assert (per_objfile->per_bfd->reading_partial_symbols); |
4a636814 SM |
23459 | load_full_comp_unit (cu->per_cu, per_objfile, cu, false, |
23460 | language_minimal); | |
98bfdba5 | 23461 | } |
c906108c | 23462 | |
f2f0e013 | 23463 | *ref_cu = target_cu; |
9c541725 | 23464 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
23465 | |
23466 | if (target_cu != cu) | |
23467 | target_cu->ancestor = cu; | |
23468 | ||
9a3c8263 | 23469 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
23470 | &temp_die, |
23471 | to_underlying (sect_off)); | |
5c631832 | 23472 | } |
10b3939b | 23473 | |
5c631832 JK |
23474 | /* Follow reference attribute ATTR of SRC_DIE. |
23475 | On entry *REF_CU is the CU of SRC_DIE. | |
23476 | On exit *REF_CU is the CU of the result. */ | |
23477 | ||
23478 | static struct die_info * | |
ff39bb5e | 23479 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23480 | struct dwarf2_cu **ref_cu) |
23481 | { | |
0826b30a | 23482 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
23483 | struct dwarf2_cu *cu = *ref_cu; |
23484 | struct die_info *die; | |
23485 | ||
9c541725 | 23486 | die = follow_die_offset (sect_off, |
36586728 TT |
23487 | (attr->form == DW_FORM_GNU_ref_alt |
23488 | || cu->per_cu->is_dwz), | |
23489 | ref_cu); | |
5c631832 | 23490 | if (!die) |
9d8780f0 SM |
23491 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23492 | "at %s [in module %s]"), | |
23493 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23494 | objfile_name (cu->per_objfile->objfile)); |
348e048f | 23495 | |
5c631832 JK |
23496 | return die; |
23497 | } | |
23498 | ||
d4c9a4f8 | 23499 | /* See read.h. */ |
5c631832 JK |
23500 | |
23501 | struct dwarf2_locexpr_baton | |
9c541725 | 23502 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 23503 | dwarf2_per_cu_data *per_cu, |
976ca316 | 23504 | dwarf2_per_objfile *per_objfile, |
041d9819 SM |
23505 | gdb::function_view<CORE_ADDR ()> get_frame_pc, |
23506 | bool resolve_abstract_p) | |
5c631832 | 23507 | { |
5c631832 JK |
23508 | struct die_info *die; |
23509 | struct attribute *attr; | |
23510 | struct dwarf2_locexpr_baton retval; | |
976ca316 | 23511 | struct objfile *objfile = per_objfile->objfile; |
8cf6f0b1 | 23512 | |
976ca316 | 23513 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 | 23514 | if (cu == nullptr) |
976ca316 | 23515 | cu = load_cu (per_cu, per_objfile, false); |
1b555f17 SM |
23516 | |
23517 | if (cu == nullptr) | |
cc12ce38 DE |
23518 | { |
23519 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23520 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23521 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23522 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23523 | } |
918dd910 | 23524 | |
9c541725 | 23525 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23526 | if (!die) |
9d8780f0 SM |
23527 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23528 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23529 | |
23530 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 23531 | if (!attr && resolve_abstract_p |
976ca316 SM |
23532 | && (per_objfile->per_bfd->abstract_to_concrete.find (die->sect_off) |
23533 | != per_objfile->per_bfd->abstract_to_concrete.end ())) | |
e4a62c65 | 23534 | { |
041d9819 | 23535 | CORE_ADDR pc = get_frame_pc (); |
b3b3bada | 23536 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 23537 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 23538 | |
3360b6e7 | 23539 | for (const auto &cand_off |
976ca316 | 23540 | : per_objfile->per_bfd->abstract_to_concrete[die->sect_off]) |
e4a62c65 | 23541 | { |
3360b6e7 TV |
23542 | struct dwarf2_cu *cand_cu = cu; |
23543 | struct die_info *cand | |
23544 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
23545 | if (!cand | |
23546 | || !cand->parent | |
e4a62c65 TV |
23547 | || cand->parent->tag != DW_TAG_subprogram) |
23548 | continue; | |
23549 | ||
23550 | CORE_ADDR pc_low, pc_high; | |
23551 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
23552 | if (pc_low == ((CORE_ADDR) -1)) |
23553 | continue; | |
23554 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
23555 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
23556 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
23557 | continue; |
23558 | ||
23559 | die = cand; | |
23560 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23561 | break; | |
23562 | } | |
23563 | } | |
23564 | ||
5c631832 JK |
23565 | if (!attr) |
23566 | { | |
e103e986 JK |
23567 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23568 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23569 | |
e103e986 | 23570 | retval.data = NULL; |
5c631832 JK |
23571 | retval.size = 0; |
23572 | } | |
cd6c91b4 | 23573 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
23574 | { |
23575 | struct dwarf2_loclist_baton loclist_baton; | |
041d9819 | 23576 | CORE_ADDR pc = get_frame_pc (); |
8cf6f0b1 TT |
23577 | size_t size; |
23578 | ||
23579 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23580 | ||
23581 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23582 | &size, pc); | |
23583 | retval.size = size; | |
23584 | } | |
5c631832 JK |
23585 | else |
23586 | { | |
4fc6c0d5 | 23587 | if (!attr->form_is_block ()) |
9d8780f0 | 23588 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23589 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23590 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 | 23591 | |
9d2246fc TT |
23592 | struct dwarf_block *block = attr->as_block (); |
23593 | retval.data = block->data; | |
23594 | retval.size = block->size; | |
5c631832 | 23595 | } |
976ca316 | 23596 | retval.per_objfile = per_objfile; |
5c631832 | 23597 | retval.per_cu = cu->per_cu; |
918dd910 | 23598 | |
976ca316 | 23599 | per_objfile->age_comp_units (); |
918dd910 | 23600 | |
5c631832 | 23601 | return retval; |
348e048f DE |
23602 | } |
23603 | ||
d4c9a4f8 | 23604 | /* See read.h. */ |
8b9737bf TT |
23605 | |
23606 | struct dwarf2_locexpr_baton | |
23607 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 23608 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23609 | dwarf2_per_objfile *per_objfile, |
041d9819 | 23610 | gdb::function_view<CORE_ADDR ()> get_frame_pc) |
8b9737bf | 23611 | { |
9c541725 | 23612 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23613 | |
14095eb3 | 23614 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, per_objfile, |
041d9819 | 23615 | get_frame_pc); |
8b9737bf TT |
23616 | } |
23617 | ||
b6807d98 TT |
23618 | /* Write a constant of a given type as target-ordered bytes into |
23619 | OBSTACK. */ | |
23620 | ||
23621 | static const gdb_byte * | |
23622 | write_constant_as_bytes (struct obstack *obstack, | |
23623 | enum bfd_endian byte_order, | |
23624 | struct type *type, | |
23625 | ULONGEST value, | |
23626 | LONGEST *len) | |
23627 | { | |
23628 | gdb_byte *result; | |
23629 | ||
23630 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23631 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23632 | store_unsigned_integer (result, *len, byte_order, value); |
23633 | ||
23634 | return result; | |
23635 | } | |
23636 | ||
d4c9a4f8 | 23637 | /* See read.h. */ |
b6807d98 TT |
23638 | |
23639 | const gdb_byte * | |
9c541725 | 23640 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 | 23641 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23642 | dwarf2_per_objfile *per_objfile, |
d4c9a4f8 | 23643 | obstack *obstack, |
b6807d98 TT |
23644 | LONGEST *len) |
23645 | { | |
b6807d98 TT |
23646 | struct die_info *die; |
23647 | struct attribute *attr; | |
23648 | const gdb_byte *result = NULL; | |
23649 | struct type *type; | |
23650 | LONGEST value; | |
23651 | enum bfd_endian byte_order; | |
14095eb3 | 23652 | struct objfile *objfile = per_objfile->objfile; |
b6807d98 | 23653 | |
7188ed02 | 23654 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
23655 | if (cu == nullptr) |
23656 | cu = load_cu (per_cu, per_objfile, false); | |
23657 | ||
23658 | if (cu == nullptr) | |
cc12ce38 DE |
23659 | { |
23660 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23661 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23662 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23663 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23664 | } |
b6807d98 | 23665 | |
9c541725 | 23666 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23667 | if (!die) |
9d8780f0 SM |
23668 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23669 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23670 | |
23671 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23672 | if (attr == NULL) | |
23673 | return NULL; | |
23674 | ||
e3b94546 | 23675 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23676 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23677 | ||
23678 | switch (attr->form) | |
23679 | { | |
23680 | case DW_FORM_addr: | |
336d760d | 23681 | case DW_FORM_addrx: |
b6807d98 TT |
23682 | case DW_FORM_GNU_addr_index: |
23683 | { | |
23684 | gdb_byte *tem; | |
23685 | ||
23686 | *len = cu->header.addr_size; | |
224c3ddb | 23687 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
36d378cf | 23688 | store_unsigned_integer (tem, *len, byte_order, attr->as_address ()); |
b6807d98 TT |
23689 | result = tem; |
23690 | } | |
23691 | break; | |
23692 | case DW_FORM_string: | |
23693 | case DW_FORM_strp: | |
cf532bd1 | 23694 | case DW_FORM_strx: |
b6807d98 TT |
23695 | case DW_FORM_GNU_str_index: |
23696 | case DW_FORM_GNU_strp_alt: | |
c6481205 | 23697 | /* The string is already allocated on the objfile obstack, point |
b6807d98 | 23698 | directly to it. */ |
2c830f54 TT |
23699 | { |
23700 | const char *attr_name = attr->as_string (); | |
23701 | result = (const gdb_byte *) attr_name; | |
23702 | *len = strlen (attr_name); | |
23703 | } | |
b6807d98 TT |
23704 | break; |
23705 | case DW_FORM_block1: | |
23706 | case DW_FORM_block2: | |
23707 | case DW_FORM_block4: | |
23708 | case DW_FORM_block: | |
23709 | case DW_FORM_exprloc: | |
0224619f | 23710 | case DW_FORM_data16: |
9d2246fc TT |
23711 | { |
23712 | struct dwarf_block *block = attr->as_block (); | |
23713 | result = block->data; | |
23714 | *len = block->size; | |
23715 | } | |
b6807d98 TT |
23716 | break; |
23717 | ||
23718 | /* The DW_AT_const_value attributes are supposed to carry the | |
23719 | symbol's value "represented as it would be on the target | |
23720 | architecture." By the time we get here, it's already been | |
23721 | converted to host endianness, so we just need to sign- or | |
23722 | zero-extend it as appropriate. */ | |
23723 | case DW_FORM_data1: | |
23724 | type = die_type (die, cu); | |
23725 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23726 | if (result == NULL) | |
23727 | result = write_constant_as_bytes (obstack, byte_order, | |
23728 | type, value, len); | |
23729 | break; | |
23730 | case DW_FORM_data2: | |
23731 | type = die_type (die, cu); | |
23732 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23733 | if (result == NULL) | |
23734 | result = write_constant_as_bytes (obstack, byte_order, | |
23735 | type, value, len); | |
23736 | break; | |
23737 | case DW_FORM_data4: | |
23738 | type = die_type (die, cu); | |
23739 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23740 | if (result == NULL) | |
23741 | result = write_constant_as_bytes (obstack, byte_order, | |
23742 | type, value, len); | |
23743 | break; | |
23744 | case DW_FORM_data8: | |
23745 | type = die_type (die, cu); | |
23746 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23747 | if (result == NULL) | |
23748 | result = write_constant_as_bytes (obstack, byte_order, | |
23749 | type, value, len); | |
23750 | break; | |
23751 | ||
23752 | case DW_FORM_sdata: | |
663c44ac | 23753 | case DW_FORM_implicit_const: |
b6807d98 TT |
23754 | type = die_type (die, cu); |
23755 | result = write_constant_as_bytes (obstack, byte_order, | |
1bc397c5 | 23756 | type, attr->as_signed (), len); |
b6807d98 TT |
23757 | break; |
23758 | ||
23759 | case DW_FORM_udata: | |
23760 | type = die_type (die, cu); | |
23761 | result = write_constant_as_bytes (obstack, byte_order, | |
529908cb | 23762 | type, attr->as_unsigned (), len); |
b6807d98 TT |
23763 | break; |
23764 | ||
23765 | default: | |
b98664d3 | 23766 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23767 | dwarf_form_name (attr->form)); |
23768 | break; | |
23769 | } | |
23770 | ||
23771 | return result; | |
23772 | } | |
23773 | ||
d4c9a4f8 | 23774 | /* See read.h. */ |
7942e96e AA |
23775 | |
23776 | struct type * | |
9c541725 | 23777 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
14095eb3 SM |
23778 | dwarf2_per_cu_data *per_cu, |
23779 | dwarf2_per_objfile *per_objfile) | |
7942e96e | 23780 | { |
7942e96e AA |
23781 | struct die_info *die; |
23782 | ||
7188ed02 | 23783 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
23784 | if (cu == nullptr) |
23785 | cu = load_cu (per_cu, per_objfile, false); | |
23786 | ||
23787 | if (cu == nullptr) | |
23788 | return nullptr; | |
7942e96e | 23789 | |
9c541725 | 23790 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23791 | if (!die) |
23792 | return NULL; | |
23793 | ||
23794 | return die_type (die, cu); | |
23795 | } | |
23796 | ||
8cb5117c | 23797 | /* See read.h. */ |
8a9b8146 TT |
23798 | |
23799 | struct type * | |
b64f50a1 | 23800 | dwarf2_get_die_type (cu_offset die_offset, |
aa66c379 SM |
23801 | dwarf2_per_cu_data *per_cu, |
23802 | dwarf2_per_objfile *per_objfile) | |
8a9b8146 | 23803 | { |
9c541725 | 23804 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
aa66c379 | 23805 | return get_die_type_at_offset (die_offset_sect, per_cu, per_objfile); |
8a9b8146 TT |
23806 | } |
23807 | ||
ac9ec31b | 23808 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23809 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23810 | On exit *REF_CU is the CU of the result. |
23811 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23812 | |
23813 | static struct die_info * | |
ac9ec31b DE |
23814 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23815 | struct dwarf2_cu **ref_cu) | |
348e048f | 23816 | { |
348e048f | 23817 | struct die_info temp_die; |
c24bdb02 | 23818 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f | 23819 | struct die_info *die; |
976ca316 | 23820 | dwarf2_per_objfile *per_objfile = (*ref_cu)->per_objfile; |
120ce1b5 | 23821 | |
348e048f | 23822 | |
ac9ec31b DE |
23823 | /* While it might be nice to assert sig_type->type == NULL here, |
23824 | we can get here for DW_AT_imported_declaration where we need | |
23825 | the DIE not the type. */ | |
348e048f DE |
23826 | |
23827 | /* If necessary, add it to the queue and load its DIEs. */ | |
23828 | ||
976ca316 | 23829 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, per_objfile, |
120ce1b5 | 23830 | language_minimal)) |
976ca316 | 23831 | read_signatured_type (sig_type, per_objfile); |
348e048f | 23832 | |
976ca316 | 23833 | sig_cu = per_objfile->get_cu (&sig_type->per_cu); |
69d751e3 | 23834 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23835 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23836 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23837 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23838 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23839 | if (die) |
23840 | { | |
796a7ff8 DE |
23841 | /* For .gdb_index version 7 keep track of included TUs. |
23842 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
976ca316 SM |
23843 | if (per_objfile->per_bfd->index_table != NULL |
23844 | && per_objfile->per_bfd->index_table->version <= 7) | |
796a7ff8 | 23845 | { |
ae640021 | 23846 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
23847 | } |
23848 | ||
348e048f | 23849 | *ref_cu = sig_cu; |
c24bdb02 KS |
23850 | if (sig_cu != cu) |
23851 | sig_cu->ancestor = cu; | |
23852 | ||
348e048f DE |
23853 | return die; |
23854 | } | |
23855 | ||
ac9ec31b DE |
23856 | return NULL; |
23857 | } | |
23858 | ||
23859 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23860 | On entry *REF_CU is the CU of SRC_DIE. | |
23861 | On exit *REF_CU is the CU of the result. | |
23862 | The result is the DIE of the type. | |
23863 | If the referenced type cannot be found an error is thrown. */ | |
23864 | ||
23865 | static struct die_info * | |
ff39bb5e | 23866 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23867 | struct dwarf2_cu **ref_cu) |
23868 | { | |
630ed6b9 | 23869 | ULONGEST signature = attr->as_signature (); |
ac9ec31b DE |
23870 | struct signatured_type *sig_type; |
23871 | struct die_info *die; | |
23872 | ||
23873 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23874 | ||
a2ce51a0 | 23875 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23876 | /* sig_type will be NULL if the signatured type is missing from |
23877 | the debug info. */ | |
23878 | if (sig_type == NULL) | |
23879 | { | |
23880 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
dda83cd7 SM |
23881 | " from DIE at %s [in module %s]"), |
23882 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23883 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
23884 | } |
23885 | ||
23886 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23887 | if (die == NULL) | |
23888 | { | |
23889 | dump_die_for_error (src_die); | |
23890 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23891 | " from DIE at %s [in module %s]"), |
23892 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23893 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
23894 | } |
23895 | ||
23896 | return die; | |
23897 | } | |
23898 | ||
23899 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23900 | reading in and processing the type unit if necessary. */ | |
23901 | ||
23902 | static struct type * | |
23903 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23904 | struct dwarf2_cu *cu) | |
23905 | { | |
976ca316 | 23906 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ac9ec31b DE |
23907 | struct signatured_type *sig_type; |
23908 | struct dwarf2_cu *type_cu; | |
23909 | struct die_info *type_die; | |
23910 | struct type *type; | |
23911 | ||
a2ce51a0 | 23912 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23913 | /* sig_type will be NULL if the signatured type is missing from |
23914 | the debug info. */ | |
23915 | if (sig_type == NULL) | |
23916 | { | |
b98664d3 | 23917 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
23918 | " from DIE at %s [in module %s]"), |
23919 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 23920 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23921 | return build_error_marker_type (cu, die); |
23922 | } | |
23923 | ||
23924 | /* If we already know the type we're done. */ | |
976ca316 | 23925 | type = per_objfile->get_type_for_signatured_type (sig_type); |
e286671b TT |
23926 | if (type != nullptr) |
23927 | return type; | |
ac9ec31b DE |
23928 | |
23929 | type_cu = cu; | |
23930 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23931 | if (type_die != NULL) | |
23932 | { | |
23933 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23934 | is created. This is important, for example, because for c++ classes | |
23935 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23936 | type = read_type_die (type_die, type_cu); | |
23937 | if (type == NULL) | |
23938 | { | |
b98664d3 | 23939 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
23940 | " referenced from DIE at %s [in module %s]"), |
23941 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 23942 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23943 | type = build_error_marker_type (cu, die); |
23944 | } | |
23945 | } | |
23946 | else | |
23947 | { | |
b98664d3 | 23948 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
23949 | " from DIE at %s [in module %s]"), |
23950 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 23951 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23952 | type = build_error_marker_type (cu, die); |
23953 | } | |
e286671b | 23954 | |
976ca316 | 23955 | per_objfile->set_type_for_signatured_type (sig_type, type); |
ac9ec31b DE |
23956 | |
23957 | return type; | |
23958 | } | |
23959 | ||
23960 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23961 | reading in and processing the type unit if necessary. */ | |
23962 | ||
23963 | static struct type * | |
ff39bb5e | 23964 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23965 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23966 | { |
23967 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 23968 | if (attr->form_is_ref ()) |
ac9ec31b DE |
23969 | { |
23970 | struct dwarf2_cu *type_cu = cu; | |
23971 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23972 | ||
23973 | return read_type_die (type_die, type_cu); | |
23974 | } | |
23975 | else if (attr->form == DW_FORM_ref_sig8) | |
23976 | { | |
630ed6b9 | 23977 | return get_signatured_type (die, attr->as_signature (), cu); |
ac9ec31b DE |
23978 | } |
23979 | else | |
23980 | { | |
976ca316 | 23981 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 23982 | |
b98664d3 | 23983 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
23984 | " at %s [in module %s]"), |
23985 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
976ca316 | 23986 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
23987 | return build_error_marker_type (cu, die); |
23988 | } | |
348e048f DE |
23989 | } |
23990 | ||
e5fe5e75 | 23991 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23992 | |
23993 | static void | |
ab432490 SM |
23994 | load_full_type_unit (dwarf2_per_cu_data *per_cu, |
23995 | dwarf2_per_objfile *per_objfile) | |
348e048f | 23996 | { |
52dc124a | 23997 | struct signatured_type *sig_type; |
348e048f | 23998 | |
f4dc4d17 | 23999 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 24000 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 24001 | |
6721b2ec DE |
24002 | /* We have the per_cu, but we need the signatured_type. |
24003 | Fortunately this is an easy translation. */ | |
24004 | gdb_assert (per_cu->is_debug_types); | |
24005 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 24006 | |
7188ed02 | 24007 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 24008 | |
ab432490 | 24009 | read_signatured_type (sig_type, per_objfile); |
348e048f | 24010 | |
7188ed02 | 24011 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); |
348e048f DE |
24012 | } |
24013 | ||
3019eac3 DE |
24014 | /* Read in a signatured type and build its CU and DIEs. |
24015 | If the type is a stub for the real type in a DWO file, | |
24016 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
24017 | |
24018 | static void | |
ab432490 SM |
24019 | read_signatured_type (signatured_type *sig_type, |
24020 | dwarf2_per_objfile *per_objfile) | |
dee91e82 DE |
24021 | { |
24022 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 24023 | |
3019eac3 | 24024 | gdb_assert (per_cu->is_debug_types); |
7188ed02 | 24025 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 24026 | |
2e671100 | 24027 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
24028 | |
24029 | if (!reader.dummy_p) | |
24030 | { | |
24031 | struct dwarf2_cu *cu = reader.cu; | |
24032 | const gdb_byte *info_ptr = reader.info_ptr; | |
24033 | ||
24034 | gdb_assert (cu->die_hash == NULL); | |
24035 | cu->die_hash = | |
24036 | htab_create_alloc_ex (cu->header.length / 12, | |
24037 | die_hash, | |
24038 | die_eq, | |
24039 | NULL, | |
24040 | &cu->comp_unit_obstack, | |
24041 | hashtab_obstack_allocate, | |
24042 | dummy_obstack_deallocate); | |
24043 | ||
3e225074 | 24044 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
24045 | reader.comp_unit_die->child |
24046 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
24047 | reader.comp_unit_die); | |
24048 | cu->dies = reader.comp_unit_die; | |
24049 | /* comp_unit_die is not stored in die_hash, no need. */ | |
24050 | ||
24051 | /* We try not to read any attributes in this function, because | |
24052 | not all CUs needed for references have been loaded yet, and | |
24053 | symbol table processing isn't initialized. But we have to | |
24054 | set the CU language, or we won't be able to build types | |
24055 | correctly. Similarly, if we do not read the producer, we can | |
24056 | not apply producer-specific interpretation. */ | |
24057 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
24058 | |
24059 | reader.keep (); | |
c0ab21c2 TT |
24060 | } |
24061 | ||
7ee85ab1 | 24062 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
24063 | } |
24064 | ||
c906108c SS |
24065 | /* Decode simple location descriptions. |
24066 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
24067 | the location and return the value. If COMPUTED is non-null, it is |
24068 | set to true to indicate that decoding was successful, and false | |
24069 | otherwise. If COMPUTED is null, then this function may emit a | |
24070 | complaint. */ | |
c906108c SS |
24071 | |
24072 | static CORE_ADDR | |
7d79de9a | 24073 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 24074 | { |
5e22e966 | 24075 | struct objfile *objfile = cu->per_objfile->objfile; |
56eb65bd SP |
24076 | size_t i; |
24077 | size_t size = blk->size; | |
d521ce57 | 24078 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
24079 | CORE_ADDR stack[64]; |
24080 | int stacki; | |
24081 | unsigned int bytes_read, unsnd; | |
24082 | gdb_byte op; | |
c906108c | 24083 | |
7d79de9a TT |
24084 | if (computed != nullptr) |
24085 | *computed = false; | |
24086 | ||
21ae7a4d JK |
24087 | i = 0; |
24088 | stacki = 0; | |
24089 | stack[stacki] = 0; | |
24090 | stack[++stacki] = 0; | |
24091 | ||
24092 | while (i < size) | |
24093 | { | |
24094 | op = data[i++]; | |
24095 | switch (op) | |
24096 | { | |
24097 | case DW_OP_lit0: | |
24098 | case DW_OP_lit1: | |
24099 | case DW_OP_lit2: | |
24100 | case DW_OP_lit3: | |
24101 | case DW_OP_lit4: | |
24102 | case DW_OP_lit5: | |
24103 | case DW_OP_lit6: | |
24104 | case DW_OP_lit7: | |
24105 | case DW_OP_lit8: | |
24106 | case DW_OP_lit9: | |
24107 | case DW_OP_lit10: | |
24108 | case DW_OP_lit11: | |
24109 | case DW_OP_lit12: | |
24110 | case DW_OP_lit13: | |
24111 | case DW_OP_lit14: | |
24112 | case DW_OP_lit15: | |
24113 | case DW_OP_lit16: | |
24114 | case DW_OP_lit17: | |
24115 | case DW_OP_lit18: | |
24116 | case DW_OP_lit19: | |
24117 | case DW_OP_lit20: | |
24118 | case DW_OP_lit21: | |
24119 | case DW_OP_lit22: | |
24120 | case DW_OP_lit23: | |
24121 | case DW_OP_lit24: | |
24122 | case DW_OP_lit25: | |
24123 | case DW_OP_lit26: | |
24124 | case DW_OP_lit27: | |
24125 | case DW_OP_lit28: | |
24126 | case DW_OP_lit29: | |
24127 | case DW_OP_lit30: | |
24128 | case DW_OP_lit31: | |
24129 | stack[++stacki] = op - DW_OP_lit0; | |
24130 | break; | |
f1bea926 | 24131 | |
21ae7a4d JK |
24132 | case DW_OP_reg0: |
24133 | case DW_OP_reg1: | |
24134 | case DW_OP_reg2: | |
24135 | case DW_OP_reg3: | |
24136 | case DW_OP_reg4: | |
24137 | case DW_OP_reg5: | |
24138 | case DW_OP_reg6: | |
24139 | case DW_OP_reg7: | |
24140 | case DW_OP_reg8: | |
24141 | case DW_OP_reg9: | |
24142 | case DW_OP_reg10: | |
24143 | case DW_OP_reg11: | |
24144 | case DW_OP_reg12: | |
24145 | case DW_OP_reg13: | |
24146 | case DW_OP_reg14: | |
24147 | case DW_OP_reg15: | |
24148 | case DW_OP_reg16: | |
24149 | case DW_OP_reg17: | |
24150 | case DW_OP_reg18: | |
24151 | case DW_OP_reg19: | |
24152 | case DW_OP_reg20: | |
24153 | case DW_OP_reg21: | |
24154 | case DW_OP_reg22: | |
24155 | case DW_OP_reg23: | |
24156 | case DW_OP_reg24: | |
24157 | case DW_OP_reg25: | |
24158 | case DW_OP_reg26: | |
24159 | case DW_OP_reg27: | |
24160 | case DW_OP_reg28: | |
24161 | case DW_OP_reg29: | |
24162 | case DW_OP_reg30: | |
24163 | case DW_OP_reg31: | |
24164 | stack[++stacki] = op - DW_OP_reg0; | |
24165 | if (i < size) | |
7d79de9a TT |
24166 | { |
24167 | if (computed == nullptr) | |
24168 | dwarf2_complex_location_expr_complaint (); | |
24169 | else | |
24170 | return 0; | |
24171 | } | |
21ae7a4d | 24172 | break; |
c906108c | 24173 | |
21ae7a4d JK |
24174 | case DW_OP_regx: |
24175 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
24176 | i += bytes_read; | |
24177 | stack[++stacki] = unsnd; | |
24178 | if (i < size) | |
7d79de9a TT |
24179 | { |
24180 | if (computed == nullptr) | |
24181 | dwarf2_complex_location_expr_complaint (); | |
24182 | else | |
24183 | return 0; | |
24184 | } | |
21ae7a4d | 24185 | break; |
c906108c | 24186 | |
21ae7a4d | 24187 | case DW_OP_addr: |
c8a7a66f TT |
24188 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
24189 | &bytes_read); | |
21ae7a4d JK |
24190 | i += bytes_read; |
24191 | break; | |
d53d4ac5 | 24192 | |
21ae7a4d JK |
24193 | case DW_OP_const1u: |
24194 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
24195 | i += 1; | |
24196 | break; | |
24197 | ||
24198 | case DW_OP_const1s: | |
24199 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
24200 | i += 1; | |
24201 | break; | |
24202 | ||
24203 | case DW_OP_const2u: | |
24204 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
24205 | i += 2; | |
24206 | break; | |
24207 | ||
24208 | case DW_OP_const2s: | |
24209 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
24210 | i += 2; | |
24211 | break; | |
d53d4ac5 | 24212 | |
21ae7a4d JK |
24213 | case DW_OP_const4u: |
24214 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
24215 | i += 4; | |
24216 | break; | |
24217 | ||
24218 | case DW_OP_const4s: | |
24219 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
24220 | i += 4; | |
24221 | break; | |
24222 | ||
585861ea JK |
24223 | case DW_OP_const8u: |
24224 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
24225 | i += 8; | |
24226 | break; | |
24227 | ||
21ae7a4d JK |
24228 | case DW_OP_constu: |
24229 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
24230 | &bytes_read); | |
24231 | i += bytes_read; | |
24232 | break; | |
24233 | ||
24234 | case DW_OP_consts: | |
24235 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
24236 | i += bytes_read; | |
24237 | break; | |
24238 | ||
24239 | case DW_OP_dup: | |
24240 | stack[stacki + 1] = stack[stacki]; | |
24241 | stacki++; | |
24242 | break; | |
24243 | ||
24244 | case DW_OP_plus: | |
24245 | stack[stacki - 1] += stack[stacki]; | |
24246 | stacki--; | |
24247 | break; | |
24248 | ||
24249 | case DW_OP_plus_uconst: | |
24250 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
24251 | &bytes_read); | |
24252 | i += bytes_read; | |
24253 | break; | |
24254 | ||
24255 | case DW_OP_minus: | |
24256 | stack[stacki - 1] -= stack[stacki]; | |
24257 | stacki--; | |
24258 | break; | |
24259 | ||
24260 | case DW_OP_deref: | |
24261 | /* If we're not the last op, then we definitely can't encode | |
24262 | this using GDB's address_class enum. This is valid for partial | |
24263 | global symbols, although the variable's address will be bogus | |
24264 | in the psymtab. */ | |
24265 | if (i < size) | |
7d79de9a TT |
24266 | { |
24267 | if (computed == nullptr) | |
24268 | dwarf2_complex_location_expr_complaint (); | |
24269 | else | |
24270 | return 0; | |
24271 | } | |
21ae7a4d JK |
24272 | break; |
24273 | ||
dda83cd7 | 24274 | case DW_OP_GNU_push_tls_address: |
4aa4e28b | 24275 | case DW_OP_form_tls_address: |
21ae7a4d JK |
24276 | /* The top of the stack has the offset from the beginning |
24277 | of the thread control block at which the variable is located. */ | |
24278 | /* Nothing should follow this operator, so the top of stack would | |
24279 | be returned. */ | |
24280 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
24281 | address will be bogus in the psymtab. Make it always at least |
24282 | non-zero to not look as a variable garbage collected by linker | |
24283 | which have DW_OP_addr 0. */ | |
21ae7a4d | 24284 | if (i < size) |
7d79de9a TT |
24285 | { |
24286 | if (computed == nullptr) | |
24287 | dwarf2_complex_location_expr_complaint (); | |
24288 | else | |
24289 | return 0; | |
24290 | } | |
585861ea | 24291 | stack[stacki]++; |
dda83cd7 | 24292 | break; |
21ae7a4d JK |
24293 | |
24294 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
24295 | if (computed != nullptr) |
24296 | return 0; | |
21ae7a4d JK |
24297 | break; |
24298 | ||
336d760d | 24299 | case DW_OP_addrx: |
3019eac3 | 24300 | case DW_OP_GNU_addr_index: |
49f6c839 | 24301 | case DW_OP_GNU_const_index: |
3019eac3 DE |
24302 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
24303 | &bytes_read); | |
24304 | i += bytes_read; | |
24305 | break; | |
24306 | ||
21ae7a4d | 24307 | default: |
7d79de9a TT |
24308 | if (computed == nullptr) |
24309 | { | |
24310 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 24311 | |
7d79de9a TT |
24312 | if (name) |
24313 | complaint (_("unsupported stack op: '%s'"), | |
24314 | name); | |
24315 | else | |
24316 | complaint (_("unsupported stack op: '%02x'"), | |
24317 | op); | |
24318 | } | |
21ae7a4d JK |
24319 | |
24320 | return (stack[stacki]); | |
d53d4ac5 | 24321 | } |
3c6e0cb3 | 24322 | |
21ae7a4d | 24323 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
dda83cd7 | 24324 | outside of the allocated space. Also enforce minimum>0. */ |
21ae7a4d JK |
24325 | if (stacki >= ARRAY_SIZE (stack) - 1) |
24326 | { | |
7d79de9a TT |
24327 | if (computed == nullptr) |
24328 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
24329 | return 0; |
24330 | } | |
24331 | ||
24332 | if (stacki <= 0) | |
24333 | { | |
7d79de9a TT |
24334 | if (computed == nullptr) |
24335 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
24336 | return 0; |
24337 | } | |
24338 | } | |
7d79de9a TT |
24339 | |
24340 | if (computed != nullptr) | |
24341 | *computed = true; | |
21ae7a4d | 24342 | return (stack[stacki]); |
c906108c SS |
24343 | } |
24344 | ||
24345 | /* memory allocation interface */ | |
24346 | ||
c906108c | 24347 | static struct dwarf_block * |
7b5a2f43 | 24348 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 24349 | { |
8d749320 | 24350 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
24351 | } |
24352 | ||
c906108c | 24353 | static struct die_info * |
b60c80d6 | 24354 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
24355 | { |
24356 | struct die_info *die; | |
b60c80d6 DJ |
24357 | size_t size = sizeof (struct die_info); |
24358 | ||
24359 | if (num_attrs > 1) | |
24360 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 24361 | |
b60c80d6 | 24362 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
24363 | memset (die, 0, sizeof (struct die_info)); |
24364 | return (die); | |
24365 | } | |
2e276125 JB |
24366 | |
24367 | \f | |
a036ba48 | 24368 | |
c90ec28a | 24369 | /* Macro support. */ |
cf2c3c16 | 24370 | |
9eac9650 TT |
24371 | /* An overload of dwarf_decode_macros that finds the correct section |
24372 | and ensures it is read in before calling the other overload. */ | |
24373 | ||
24374 | static void | |
24375 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
24376 | int section_is_gnu) | |
24377 | { | |
976ca316 SM |
24378 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24379 | struct objfile *objfile = per_objfile->objfile; | |
5a0e026f | 24380 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
24381 | unsigned int offset_size = cu->header.offset_size; |
24382 | struct dwarf2_section_info *section; | |
24383 | const char *section_name; | |
24384 | ||
24385 | if (cu->dwo_unit != nullptr) | |
24386 | { | |
24387 | if (section_is_gnu) | |
24388 | { | |
24389 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24390 | section_name = ".debug_macro.dwo"; | |
24391 | } | |
24392 | else | |
24393 | { | |
24394 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24395 | section_name = ".debug_macinfo.dwo"; | |
24396 | } | |
24397 | } | |
24398 | else | |
24399 | { | |
24400 | if (section_is_gnu) | |
24401 | { | |
976ca316 | 24402 | section = &per_objfile->per_bfd->macro; |
9eac9650 TT |
24403 | section_name = ".debug_macro"; |
24404 | } | |
24405 | else | |
24406 | { | |
976ca316 | 24407 | section = &per_objfile->per_bfd->macinfo; |
9eac9650 TT |
24408 | section_name = ".debug_macinfo"; |
24409 | } | |
24410 | } | |
24411 | ||
24412 | section->read (objfile); | |
24413 | if (section->buffer == nullptr) | |
24414 | { | |
24415 | complaint (_("missing %s section"), section_name); | |
24416 | return; | |
24417 | } | |
24418 | ||
24419 | buildsym_compunit *builder = cu->get_builder (); | |
24420 | ||
048fde1e | 24421 | struct dwarf2_section_info *str_offsets_section; |
24422 | struct dwarf2_section_info *str_section; | |
24423 | ULONGEST str_offsets_base; | |
24424 | ||
24425 | if (cu->dwo_unit != nullptr) | |
24426 | { | |
24427 | str_offsets_section = &cu->dwo_unit->dwo_file | |
24428 | ->sections.str_offsets; | |
24429 | str_section = &cu->dwo_unit->dwo_file->sections.str; | |
24430 | str_offsets_base = cu->header.addr_size; | |
24431 | } | |
24432 | else | |
24433 | { | |
24434 | str_offsets_section = &per_objfile->per_bfd->str_offsets; | |
24435 | str_section = &per_objfile->per_bfd->str; | |
24436 | str_offsets_base = *cu->str_offsets_base; | |
24437 | } | |
24438 | ||
976ca316 | 24439 | dwarf_decode_macros (per_objfile, builder, section, lh, |
048fde1e | 24440 | offset_size, offset, str_section, str_offsets_section, |
24441 | str_offsets_base, section_is_gnu); | |
9eac9650 TT |
24442 | } |
24443 | ||
3019eac3 DE |
24444 | /* Return the .debug_loc section to use for CU. |
24445 | For DWO files use .debug_loc.dwo. */ | |
24446 | ||
24447 | static struct dwarf2_section_info * | |
24448 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24449 | { | |
976ca316 | 24450 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 24451 | |
3019eac3 | 24452 | if (cu->dwo_unit) |
43988095 JK |
24453 | { |
24454 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 24455 | |
43988095 JK |
24456 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
24457 | } | |
976ca316 SM |
24458 | return (cu->header.version >= 5 ? &per_objfile->per_bfd->loclists |
24459 | : &per_objfile->per_bfd->loc); | |
3019eac3 DE |
24460 | } |
24461 | ||
d0ce17d8 CT |
24462 | /* Return the .debug_rnglists section to use for CU. */ |
24463 | static struct dwarf2_section_info * | |
24464 | cu_debug_rnglists_section (struct dwarf2_cu *cu, dwarf_tag tag) | |
24465 | { | |
24466 | if (cu->header.version < 5) | |
24467 | error (_(".debug_rnglists section cannot be used in DWARF %d"), | |
24468 | cu->header.version); | |
24469 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
24470 | ||
24471 | /* Make sure we read the .debug_rnglists section from the file that | |
24472 | contains the DW_AT_ranges attribute we are reading. Normally that | |
24473 | would be the .dwo file, if there is one. However for DW_TAG_compile_unit | |
24474 | or DW_TAG_skeleton unit, we always want to read from objfile/linked | |
24475 | program. */ | |
24476 | if (cu->dwo_unit != nullptr | |
24477 | && tag != DW_TAG_compile_unit | |
24478 | && tag != DW_TAG_skeleton_unit) | |
24479 | { | |
24480 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
24481 | ||
24482 | if (sections->rnglists.size > 0) | |
24483 | return §ions->rnglists; | |
24484 | else | |
24485 | error (_(".debug_rnglists section is missing from .dwo file.")); | |
24486 | } | |
24487 | return &dwarf2_per_objfile->per_bfd->rnglists; | |
24488 | } | |
24489 | ||
8cf6f0b1 TT |
24490 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24491 | ||
24492 | static void | |
24493 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24494 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24495 | const struct attribute *attr) |
8cf6f0b1 | 24496 | { |
976ca316 | 24497 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 DE |
24498 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24499 | ||
976ca316 | 24500 | section->read (per_objfile->objfile); |
8cf6f0b1 | 24501 | |
976ca316 | 24502 | baton->per_objfile = per_objfile; |
8cf6f0b1 TT |
24503 | baton->per_cu = cu->per_cu; |
24504 | gdb_assert (baton->per_cu); | |
24505 | /* We don't know how long the location list is, but make sure we | |
24506 | don't run off the edge of the section. */ | |
d4df075e TT |
24507 | baton->size = section->size - attr->as_unsigned (); |
24508 | baton->data = section->buffer + attr->as_unsigned (); | |
2b24b6e4 TT |
24509 | if (cu->base_address.has_value ()) |
24510 | baton->base_address = *cu->base_address; | |
24511 | else | |
24512 | baton->base_address = 0; | |
f664829e | 24513 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24514 | } |
24515 | ||
4c2df51b | 24516 | static void |
ff39bb5e | 24517 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24518 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24519 | { |
976ca316 SM |
24520 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24521 | struct objfile *objfile = per_objfile->objfile; | |
3019eac3 | 24522 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24523 | |
cd6c91b4 | 24524 | if (attr->form_is_section_offset () |
3019eac3 | 24525 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24526 | the section. If so, fall through to the complaint in the |
24527 | other branch. */ | |
d4df075e | 24528 | && attr->as_unsigned () < section->get_size (objfile)) |
4c2df51b | 24529 | { |
0d53c4c4 | 24530 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24531 | |
8d749320 | 24532 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24533 | |
8cf6f0b1 | 24534 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24535 | |
2b24b6e4 | 24536 | if (!cu->base_address.has_value ()) |
b98664d3 | 24537 | complaint (_("Location list used without " |
3e43a32a | 24538 | "specifying the CU base address.")); |
4c2df51b | 24539 | |
f1e6e072 TT |
24540 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24541 | ? dwarf2_loclist_block_index | |
24542 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24543 | SYMBOL_LOCATION_BATON (sym) = baton; |
24544 | } | |
24545 | else | |
24546 | { | |
24547 | struct dwarf2_locexpr_baton *baton; | |
24548 | ||
8d749320 | 24549 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
976ca316 | 24550 | baton->per_objfile = per_objfile; |
ae0d2f24 UW |
24551 | baton->per_cu = cu->per_cu; |
24552 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 24553 | |
4fc6c0d5 | 24554 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
24555 | { |
24556 | /* Note that we're just copying the block's data pointer | |
24557 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24558 | info_buffer for SYM's objfile; right now we never release |
24559 | that buffer, but when we do clean up properly this may | |
24560 | need to change. */ | |
9d2246fc TT |
24561 | struct dwarf_block *block = attr->as_block (); |
24562 | baton->size = block->size; | |
24563 | baton->data = block->data; | |
0d53c4c4 DJ |
24564 | } |
24565 | else | |
24566 | { | |
24567 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 24568 | sym->natural_name ()); |
0d53c4c4 | 24569 | baton->size = 0; |
0d53c4c4 | 24570 | } |
6e70227d | 24571 | |
f1e6e072 TT |
24572 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24573 | ? dwarf2_locexpr_block_index | |
24574 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24575 | SYMBOL_LOCATION_BATON (sym) = baton; |
24576 | } | |
4c2df51b | 24577 | } |
6502dd73 | 24578 | |
2e6a9f79 | 24579 | /* See read.h. */ |
96408a79 | 24580 | |
2e6a9f79 SM |
24581 | const comp_unit_head * |
24582 | dwarf2_per_cu_data::get_header () const | |
96408a79 | 24583 | { |
2e6a9f79 SM |
24584 | if (!m_header_read_in) |
24585 | { | |
24586 | const gdb_byte *info_ptr | |
24587 | = this->section->buffer + to_underlying (this->sect_off); | |
96408a79 | 24588 | |
2e6a9f79 | 24589 | memset (&m_header, 0, sizeof (m_header)); |
96408a79 | 24590 | |
2e6a9f79 SM |
24591 | read_comp_unit_head (&m_header, info_ptr, this->section, |
24592 | rcuh_kind::COMPILE); | |
24593 | } | |
96408a79 | 24594 | |
2e6a9f79 | 24595 | return &m_header; |
96408a79 SA |
24596 | } |
24597 | ||
09ba997f | 24598 | /* See read.h. */ |
ae0d2f24 | 24599 | |
98714339 | 24600 | int |
09ba997f | 24601 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 24602 | { |
2e6a9f79 | 24603 | return this->get_header ()->addr_size; |
ae0d2f24 UW |
24604 | } |
24605 | ||
09ba997f | 24606 | /* See read.h. */ |
9eae7c52 TT |
24607 | |
24608 | int | |
09ba997f | 24609 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 24610 | { |
2e6a9f79 | 24611 | return this->get_header ()->offset_size; |
96408a79 SA |
24612 | } |
24613 | ||
09ba997f | 24614 | /* See read.h. */ |
96408a79 SA |
24615 | |
24616 | int | |
09ba997f | 24617 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 | 24618 | { |
2e6a9f79 | 24619 | const comp_unit_head *header = this->get_header (); |
96408a79 | 24620 | |
2e6a9f79 SM |
24621 | if (header->version == 2) |
24622 | return header->addr_size; | |
96408a79 | 24623 | else |
2e6a9f79 | 24624 | return header->offset_size; |
181cebd4 JK |
24625 | } |
24626 | ||
09ba997f | 24627 | /* See read.h. */ |
9aa1f1e3 | 24628 | |
09ba997f | 24629 | struct type * |
293e7e51 | 24630 | dwarf2_cu::addr_type () const |
9a49df9d | 24631 | { |
293e7e51 | 24632 | struct objfile *objfile = this->per_objfile->objfile; |
9a49df9d AB |
24633 | struct type *void_type = objfile_type (objfile)->builtin_void; |
24634 | struct type *addr_type = lookup_pointer_type (void_type); | |
293e7e51 | 24635 | int addr_size = this->per_cu->addr_size (); |
9a49df9d AB |
24636 | |
24637 | if (TYPE_LENGTH (addr_type) == addr_size) | |
24638 | return addr_type; | |
24639 | ||
c6d940a9 | 24640 | addr_type = addr_sized_int_type (addr_type->is_unsigned ()); |
9a49df9d AB |
24641 | return addr_type; |
24642 | } | |
24643 | ||
22b6cd70 TT |
24644 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
24645 | the index of the result, and that searches a vector. It will | |
24646 | return a result even if the offset in question does not actually | |
24647 | occur in any CU. This is separate so that it can be unit | |
24648 | tested. */ | |
ae038cb0 | 24649 | |
22b6cd70 TT |
24650 | static int |
24651 | dwarf2_find_containing_comp_unit | |
24652 | (sect_offset sect_off, | |
24653 | unsigned int offset_in_dwz, | |
24654 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 24655 | { |
ae038cb0 DJ |
24656 | int low, high; |
24657 | ||
ae038cb0 | 24658 | low = 0; |
22b6cd70 | 24659 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
24660 | while (high > low) |
24661 | { | |
36586728 | 24662 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 24663 | int mid = low + (high - low) / 2; |
9a619af0 | 24664 | |
22b6cd70 | 24665 | mid_cu = all_comp_units[mid]; |
36586728 | 24666 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 24667 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 24668 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
24669 | high = mid; |
24670 | else | |
24671 | low = mid + 1; | |
24672 | } | |
24673 | gdb_assert (low == high); | |
22b6cd70 TT |
24674 | return low; |
24675 | } | |
24676 | ||
24677 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
24678 | the DIE at OFFSET. Raises an error on failure. */ | |
24679 | ||
24680 | static struct dwarf2_per_cu_data * | |
24681 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
24682 | unsigned int offset_in_dwz, | |
976ca316 | 24683 | dwarf2_per_objfile *per_objfile) |
22b6cd70 | 24684 | { |
976ca316 SM |
24685 | int low = dwarf2_find_containing_comp_unit |
24686 | (sect_off, offset_in_dwz, per_objfile->per_bfd->all_comp_units); | |
24687 | dwarf2_per_cu_data *this_cu = per_objfile->per_bfd->all_comp_units[low]; | |
22b6cd70 | 24688 | |
45b8ae0c | 24689 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 24690 | { |
36586728 | 24691 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 24692 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
24693 | "offset %s [in module %s]"), |
24694 | sect_offset_str (sect_off), | |
976ca316 | 24695 | bfd_get_filename (per_objfile->objfile->obfd)); |
10b3939b | 24696 | |
976ca316 | 24697 | gdb_assert (per_objfile->per_bfd->all_comp_units[low-1]->sect_off |
9c541725 | 24698 | <= sect_off); |
976ca316 | 24699 | return per_objfile->per_bfd->all_comp_units[low-1]; |
ae038cb0 DJ |
24700 | } |
24701 | else | |
24702 | { | |
976ca316 | 24703 | if (low == per_objfile->per_bfd->all_comp_units.size () - 1 |
9c541725 | 24704 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 24705 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 24706 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
24707 | return this_cu; |
24708 | } | |
24709 | } | |
24710 | ||
22b6cd70 TT |
24711 | #if GDB_SELF_TEST |
24712 | ||
24713 | namespace selftests { | |
24714 | namespace find_containing_comp_unit { | |
24715 | ||
24716 | static void | |
24717 | run_test () | |
24718 | { | |
24719 | struct dwarf2_per_cu_data one {}; | |
24720 | struct dwarf2_per_cu_data two {}; | |
24721 | struct dwarf2_per_cu_data three {}; | |
24722 | struct dwarf2_per_cu_data four {}; | |
24723 | ||
24724 | one.length = 5; | |
24725 | two.sect_off = sect_offset (one.length); | |
24726 | two.length = 7; | |
24727 | ||
24728 | three.length = 5; | |
24729 | three.is_dwz = 1; | |
24730 | four.sect_off = sect_offset (three.length); | |
24731 | four.length = 7; | |
24732 | four.is_dwz = 1; | |
24733 | ||
24734 | std::vector<dwarf2_per_cu_data *> units; | |
24735 | units.push_back (&one); | |
24736 | units.push_back (&two); | |
24737 | units.push_back (&three); | |
24738 | units.push_back (&four); | |
24739 | ||
24740 | int result; | |
24741 | ||
24742 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
24743 | SELF_CHECK (units[result] == &one); | |
24744 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
24745 | SELF_CHECK (units[result] == &one); | |
24746 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
24747 | SELF_CHECK (units[result] == &two); | |
24748 | ||
24749 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
24750 | SELF_CHECK (units[result] == &three); | |
24751 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
24752 | SELF_CHECK (units[result] == &three); | |
24753 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
24754 | SELF_CHECK (units[result] == &four); | |
24755 | } | |
24756 | ||
24757 | } | |
24758 | } | |
24759 | ||
24760 | #endif /* GDB_SELF_TEST */ | |
24761 | ||
9e021579 | 24762 | /* Initialize dwarf2_cu to read PER_CU, in the context of PER_OBJFILE. */ |
93311388 | 24763 | |
9e021579 SM |
24764 | dwarf2_cu::dwarf2_cu (dwarf2_per_cu_data *per_cu, |
24765 | dwarf2_per_objfile *per_objfile) | |
24766 | : per_cu (per_cu), | |
24767 | per_objfile (per_objfile), | |
9068261f AB |
24768 | mark (false), |
24769 | has_loclist (false), | |
24770 | checked_producer (false), | |
24771 | producer_is_gxx_lt_4_6 (false), | |
24772 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 24773 | producer_is_icc (false), |
9068261f | 24774 | producer_is_icc_lt_14 (false), |
c258c396 | 24775 | producer_is_codewarrior (false), |
9068261f | 24776 | processing_has_namespace_info (false) |
93311388 | 24777 | { |
9816fde3 JK |
24778 | } |
24779 | ||
24780 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
24781 | ||
24782 | static void | |
95554aad TT |
24783 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
24784 | enum language pretend_language) | |
9816fde3 JK |
24785 | { |
24786 | struct attribute *attr; | |
24787 | ||
24788 | /* Set the language we're debugging. */ | |
24789 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 24790 | if (attr != nullptr) |
529908cb | 24791 | set_cu_language (attr->constant_value (0), cu); |
9816fde3 | 24792 | else |
9cded63f | 24793 | { |
95554aad | 24794 | cu->language = pretend_language; |
9cded63f TT |
24795 | cu->language_defn = language_def (cu->language); |
24796 | } | |
dee91e82 | 24797 | |
7d45c7c3 | 24798 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
24799 | } |
24800 | ||
7188ed02 | 24801 | /* See read.h. */ |
ae038cb0 | 24802 | |
7188ed02 SM |
24803 | dwarf2_cu * |
24804 | dwarf2_per_objfile::get_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 24805 | { |
7188ed02 SM |
24806 | auto it = m_dwarf2_cus.find (per_cu); |
24807 | if (it == m_dwarf2_cus.end ()) | |
24808 | return nullptr; | |
ae038cb0 | 24809 | |
7188ed02 SM |
24810 | return it->second; |
24811 | } | |
24812 | ||
24813 | /* See read.h. */ | |
24814 | ||
24815 | void | |
24816 | dwarf2_per_objfile::set_cu (dwarf2_per_cu_data *per_cu, dwarf2_cu *cu) | |
24817 | { | |
24818 | gdb_assert (this->get_cu (per_cu) == nullptr); | |
24819 | ||
24820 | m_dwarf2_cus[per_cu] = cu; | |
24821 | } | |
24822 | ||
24823 | /* See read.h. */ | |
24824 | ||
24825 | void | |
24826 | dwarf2_per_objfile::age_comp_units () | |
24827 | { | |
24828 | /* Start by clearing all marks. */ | |
24829 | for (auto pair : m_dwarf2_cus) | |
24830 | pair.second->mark = false; | |
24831 | ||
24832 | /* Traverse all CUs, mark them and their dependencies if used recently | |
24833 | enough. */ | |
24834 | for (auto pair : m_dwarf2_cus) | |
ae038cb0 | 24835 | { |
7188ed02 SM |
24836 | dwarf2_cu *cu = pair.second; |
24837 | ||
24838 | cu->last_used++; | |
24839 | if (cu->last_used <= dwarf_max_cache_age) | |
24840 | dwarf2_mark (cu); | |
ae038cb0 DJ |
24841 | } |
24842 | ||
7188ed02 SM |
24843 | /* Delete all CUs still not marked. */ |
24844 | for (auto it = m_dwarf2_cus.begin (); it != m_dwarf2_cus.end ();) | |
ae038cb0 | 24845 | { |
7188ed02 | 24846 | dwarf2_cu *cu = it->second; |
ae038cb0 | 24847 | |
7188ed02 | 24848 | if (!cu->mark) |
ae038cb0 | 24849 | { |
7188ed02 SM |
24850 | delete cu; |
24851 | it = m_dwarf2_cus.erase (it); | |
ae038cb0 DJ |
24852 | } |
24853 | else | |
7188ed02 | 24854 | it++; |
ae038cb0 DJ |
24855 | } |
24856 | } | |
24857 | ||
7188ed02 | 24858 | /* See read.h. */ |
ae038cb0 | 24859 | |
7188ed02 SM |
24860 | void |
24861 | dwarf2_per_objfile::remove_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 24862 | { |
7188ed02 SM |
24863 | auto it = m_dwarf2_cus.find (per_cu); |
24864 | if (it == m_dwarf2_cus.end ()) | |
24865 | return; | |
ae038cb0 | 24866 | |
7188ed02 | 24867 | delete it->second; |
ae038cb0 | 24868 | |
7188ed02 SM |
24869 | m_dwarf2_cus.erase (it); |
24870 | } | |
ae038cb0 | 24871 | |
7188ed02 SM |
24872 | dwarf2_per_objfile::~dwarf2_per_objfile () |
24873 | { | |
24874 | remove_all_cus (); | |
ae038cb0 DJ |
24875 | } |
24876 | ||
dee91e82 DE |
24877 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
24878 | We store these in a hash table separate from the DIEs, and preserve them | |
24879 | when the DIEs are flushed out of cache. | |
24880 | ||
24881 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 24882 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
24883 | or the type may come from a DWO file. Furthermore, while it's more logical |
24884 | to use per_cu->section+offset, with Fission the section with the data is in | |
24885 | the DWO file but we don't know that section at the point we need it. | |
24886 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
24887 | because we can enter the lookup routine, get_die_type_at_offset, from | |
24888 | outside this file, and thus won't necessarily have PER_CU->cu. | |
24889 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 24890 | |
dee91e82 | 24891 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 24892 | { |
dee91e82 | 24893 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 24894 | sect_offset sect_off; |
1c379e20 DJ |
24895 | struct type *type; |
24896 | }; | |
24897 | ||
dee91e82 | 24898 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
24899 | |
24900 | static hashval_t | |
dee91e82 | 24901 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 24902 | { |
9a3c8263 SM |
24903 | const struct dwarf2_per_cu_offset_and_type *ofs |
24904 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 24905 | |
9c541725 | 24906 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
24907 | } |
24908 | ||
dee91e82 | 24909 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
24910 | |
24911 | static int | |
dee91e82 | 24912 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 24913 | { |
9a3c8263 SM |
24914 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
24915 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
24916 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
24917 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 24918 | |
dee91e82 | 24919 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 24920 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
24921 | } |
24922 | ||
24923 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
24924 | table if necessary. For convenience, return TYPE. |
24925 | ||
24926 | The DIEs reading must have careful ordering to: | |
85102364 | 24927 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
24928 | reading current DIE. |
24929 | * Not trying to dereference contents of still incompletely read in types | |
24930 | while reading in other DIEs. | |
24931 | * Enable referencing still incompletely read in types just by a pointer to | |
24932 | the type without accessing its fields. | |
24933 | ||
24934 | Therefore caller should follow these rules: | |
24935 | * Try to fetch any prerequisite types we may need to build this DIE type | |
24936 | before building the type and calling set_die_type. | |
e71ec853 | 24937 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
24938 | possible before fetching more types to complete the current type. |
24939 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 24940 | |
f792889a | 24941 | static struct type * |
57567375 TT |
24942 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
24943 | bool skip_data_location) | |
1c379e20 | 24944 | { |
976ca316 | 24945 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
dee91e82 | 24946 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
976ca316 | 24947 | struct objfile *objfile = per_objfile->objfile; |
3cdcd0ce JB |
24948 | struct attribute *attr; |
24949 | struct dynamic_prop prop; | |
1c379e20 | 24950 | |
b4ba55a1 JB |
24951 | /* For Ada types, make sure that the gnat-specific data is always |
24952 | initialized (if not already set). There are a few types where | |
24953 | we should not be doing so, because the type-specific area is | |
24954 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
24955 | where the type-specific area is used to store the floatformat). | |
24956 | But this is not a problem, because the gnat-specific information | |
24957 | is actually not needed for these types. */ | |
24958 | if (need_gnat_info (cu) | |
78134374 SM |
24959 | && type->code () != TYPE_CODE_FUNC |
24960 | && type->code () != TYPE_CODE_FLT | |
24961 | && type->code () != TYPE_CODE_METHODPTR | |
24962 | && type->code () != TYPE_CODE_MEMBERPTR | |
24963 | && type->code () != TYPE_CODE_METHOD | |
09584414 | 24964 | && type->code () != TYPE_CODE_FIXED_POINT |
b4ba55a1 JB |
24965 | && !HAVE_GNAT_AUX_INFO (type)) |
24966 | INIT_GNAT_SPECIFIC (type); | |
24967 | ||
3f2f83dd KB |
24968 | /* Read DW_AT_allocated and set in type. */ |
24969 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
9cdf9820 | 24970 | if (attr != NULL) |
3f2f83dd | 24971 | { |
293e7e51 | 24972 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 24973 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 24974 | type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); |
3f2f83dd | 24975 | } |
3f2f83dd KB |
24976 | |
24977 | /* Read DW_AT_associated and set in type. */ | |
24978 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
9cdf9820 | 24979 | if (attr != NULL) |
3f2f83dd | 24980 | { |
293e7e51 | 24981 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 24982 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 24983 | type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); |
3f2f83dd | 24984 | } |
3f2f83dd | 24985 | |
3cdcd0ce | 24986 | /* Read DW_AT_data_location and set in type. */ |
57567375 TT |
24987 | if (!skip_data_location) |
24988 | { | |
24989 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
24990 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) | |
24991 | type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); | |
24992 | } | |
3cdcd0ce | 24993 | |
976ca316 SM |
24994 | if (per_objfile->die_type_hash == NULL) |
24995 | per_objfile->die_type_hash | |
0335378b TT |
24996 | = htab_up (htab_create_alloc (127, |
24997 | per_cu_offset_and_type_hash, | |
24998 | per_cu_offset_and_type_eq, | |
24999 | NULL, xcalloc, xfree)); | |
1c379e20 | 25000 | |
dee91e82 | 25001 | ofs.per_cu = cu->per_cu; |
9c541725 | 25002 | ofs.sect_off = die->sect_off; |
1c379e20 | 25003 | ofs.type = type; |
dee91e82 | 25004 | slot = (struct dwarf2_per_cu_offset_and_type **) |
976ca316 | 25005 | htab_find_slot (per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 25006 | if (*slot) |
b98664d3 | 25007 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 25008 | sect_offset_str (die->sect_off)); |
8d749320 SM |
25009 | *slot = XOBNEW (&objfile->objfile_obstack, |
25010 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25011 | **slot = ofs; |
f792889a | 25012 | return type; |
1c379e20 DJ |
25013 | } |
25014 | ||
9c541725 | 25015 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25016 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25017 | |
25018 | static struct type * | |
9c541725 | 25019 | get_die_type_at_offset (sect_offset sect_off, |
aa66c379 | 25020 | dwarf2_per_cu_data *per_cu, |
976ca316 | 25021 | dwarf2_per_objfile *per_objfile) |
1c379e20 | 25022 | { |
dee91e82 | 25023 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 25024 | |
976ca316 | 25025 | if (per_objfile->die_type_hash == NULL) |
f792889a | 25026 | return NULL; |
1c379e20 | 25027 | |
dee91e82 | 25028 | ofs.per_cu = per_cu; |
9c541725 | 25029 | ofs.sect_off = sect_off; |
9a3c8263 | 25030 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
976ca316 | 25031 | htab_find (per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
25032 | if (slot) |
25033 | return slot->type; | |
25034 | else | |
25035 | return NULL; | |
25036 | } | |
25037 | ||
02142a6c | 25038 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25039 | or return NULL if DIE does not have a saved type. */ |
25040 | ||
25041 | static struct type * | |
25042 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25043 | { | |
aa66c379 | 25044 | return get_die_type_at_offset (die->sect_off, cu->per_cu, cu->per_objfile); |
673bfd45 DE |
25045 | } |
25046 | ||
10b3939b DJ |
25047 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25048 | ||
25049 | static void | |
25050 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25051 | struct dwarf2_per_cu_data *ref_per_cu) | |
25052 | { | |
25053 | void **slot; | |
25054 | ||
25055 | if (cu->dependencies == NULL) | |
25056 | cu->dependencies | |
25057 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25058 | NULL, &cu->comp_unit_obstack, | |
25059 | hashtab_obstack_allocate, | |
25060 | dummy_obstack_deallocate); | |
25061 | ||
25062 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25063 | if (*slot == NULL) | |
25064 | *slot = ref_per_cu; | |
25065 | } | |
1c379e20 | 25066 | |
f504f079 DE |
25067 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25068 | Set the mark field in every compilation unit in the | |
7188ed02 SM |
25069 | cache that we must keep because we are keeping CU. |
25070 | ||
25071 | DATA is the dwarf2_per_objfile object in which to look up CUs. */ | |
ae038cb0 | 25072 | |
10b3939b DJ |
25073 | static int |
25074 | dwarf2_mark_helper (void **slot, void *data) | |
25075 | { | |
7188ed02 SM |
25076 | dwarf2_per_cu_data *per_cu = (dwarf2_per_cu_data *) *slot; |
25077 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) data; | |
25078 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); | |
d07ed419 JK |
25079 | |
25080 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25081 | reading of the chain. As such dependencies remain valid it is not much | |
25082 | useful to track and undo them during QUIT cleanups. */ | |
7188ed02 | 25083 | if (cu == nullptr) |
d07ed419 JK |
25084 | return 1; |
25085 | ||
7188ed02 | 25086 | if (cu->mark) |
10b3939b | 25087 | return 1; |
10b3939b | 25088 | |
7188ed02 SM |
25089 | cu->mark = true; |
25090 | ||
25091 | if (cu->dependencies != nullptr) | |
25092 | htab_traverse (cu->dependencies, dwarf2_mark_helper, per_objfile); | |
10b3939b DJ |
25093 | |
25094 | return 1; | |
25095 | } | |
25096 | ||
f504f079 DE |
25097 | /* Set the mark field in CU and in every other compilation unit in the |
25098 | cache that we must keep because we are keeping CU. */ | |
25099 | ||
ae038cb0 DJ |
25100 | static void |
25101 | dwarf2_mark (struct dwarf2_cu *cu) | |
25102 | { | |
25103 | if (cu->mark) | |
25104 | return; | |
7188ed02 | 25105 | |
9068261f | 25106 | cu->mark = true; |
ae038cb0 | 25107 | |
7188ed02 SM |
25108 | if (cu->dependencies != nullptr) |
25109 | htab_traverse (cu->dependencies, dwarf2_mark_helper, cu->per_objfile); | |
72bf9492 DJ |
25110 | } |
25111 | ||
72bf9492 DJ |
25112 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25113 | is its offset in .debug_info for this objfile. */ | |
25114 | ||
25115 | static hashval_t | |
25116 | partial_die_hash (const void *item) | |
25117 | { | |
9a3c8263 SM |
25118 | const struct partial_die_info *part_die |
25119 | = (const struct partial_die_info *) item; | |
9a619af0 | 25120 | |
9c541725 | 25121 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25122 | } |
25123 | ||
25124 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25125 | are equal if they have the same offset. */ | |
25126 | ||
25127 | static int | |
25128 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25129 | { | |
9a3c8263 SM |
25130 | const struct partial_die_info *part_die_lhs |
25131 | = (const struct partial_die_info *) item_lhs; | |
25132 | const struct partial_die_info *part_die_rhs | |
25133 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25134 | |
9c541725 | 25135 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25136 | } |
25137 | ||
3c3bb058 AB |
25138 | struct cmd_list_element *set_dwarf_cmdlist; |
25139 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 25140 | |
9291a0cd | 25141 | static void |
cd4fb1b2 SM |
25142 | show_check_physname (struct ui_file *file, int from_tty, |
25143 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25144 | { |
cd4fb1b2 SM |
25145 | fprintf_filtered (file, |
25146 | _("Whether to check \"physname\" is %s.\n"), | |
25147 | value); | |
9291a0cd TT |
25148 | } |
25149 | ||
6c265988 | 25150 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 25151 | void |
6c265988 | 25152 | _initialize_dwarf2_read () |
9291a0cd | 25153 | { |
0743fc83 | 25154 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 25155 | Set DWARF specific variables.\n\ |
590042fc | 25156 | Configure DWARF variables such as the cache size."), |
0743fc83 TT |
25157 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
25158 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 25159 | |
0743fc83 | 25160 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
25161 | Show DWARF specific variables.\n\ |
25162 | Show DWARF variables such as the cache size."), | |
0743fc83 TT |
25163 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
25164 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 25165 | |
cd4fb1b2 SM |
25166 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25167 | &dwarf_max_cache_age, _("\ | |
25168 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25169 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25170 | A higher limit means that cached compilation units will be stored\n\ | |
25171 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25172 | caching, which can slow down startup."), | |
25173 | NULL, | |
25174 | show_dwarf_max_cache_age, | |
25175 | &set_dwarf_cmdlist, | |
25176 | &show_dwarf_cmdlist); | |
156942c7 | 25177 | |
cd4fb1b2 SM |
25178 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25179 | Set debugging of the DWARF reader."), _("\ | |
25180 | Show debugging of the DWARF reader."), _("\ | |
25181 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25182 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25183 | information. A value greater than 1 provides more verbose information."), | |
25184 | NULL, | |
25185 | NULL, | |
25186 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25187 | |
cd4fb1b2 SM |
25188 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25189 | Set debugging of the DWARF DIE reader."), _("\ | |
25190 | Show debugging of the DWARF DIE reader."), _("\ | |
25191 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25192 | The value is the maximum depth to print."), | |
25193 | NULL, | |
25194 | NULL, | |
25195 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25196 | |
cd4fb1b2 SM |
25197 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25198 | Set debugging of the dwarf line reader."), _("\ | |
25199 | Show debugging of the dwarf line reader."), _("\ | |
25200 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25201 | A value of 1 (one) provides basic information.\n\ | |
25202 | A value greater than 1 provides more verbose information."), | |
25203 | NULL, | |
25204 | NULL, | |
25205 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25206 | |
cd4fb1b2 SM |
25207 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25208 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25209 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25210 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25211 | the demangler."), | |
25212 | NULL, show_check_physname, | |
25213 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25214 | |
e615022a DE |
25215 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25216 | no_class, &use_deprecated_index_sections, _("\ | |
25217 | Set whether to use deprecated gdb_index sections."), _("\ | |
25218 | Show whether to use deprecated gdb_index sections."), _("\ | |
25219 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25220 | Normally they are ignored either because of a missing feature or\n\ | |
25221 | performance issue.\n\ | |
25222 | Warning: This option must be enabled before gdb reads the file."), | |
25223 | NULL, | |
25224 | NULL, | |
25225 | &setlist, &showlist); | |
25226 | ||
f1e6e072 TT |
25227 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25228 | &dwarf2_locexpr_funcs); | |
25229 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25230 | &dwarf2_loclist_funcs); | |
25231 | ||
25232 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25233 | &dwarf2_block_frame_base_locexpr_funcs); | |
25234 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25235 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25236 | |
25237 | #if GDB_SELF_TEST | |
25238 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25239 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
25240 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
25241 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 25242 | #endif |
6502dd73 | 25243 | } |