Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
3666a048 | 3 | Copyright (C) 1994-2021 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" |
c2a62a3d | 43 | #include "dwarf2/sect-names.h" |
2b2558bf | 44 | #include "dwarf2/stringify.h" |
70182375 | 45 | #include "dwarf2/public.h" |
4de283e4 TT |
46 | #include "bfd.h" |
47 | #include "elf-bfd.h" | |
48 | #include "symtab.h" | |
49 | #include "gdbtypes.h" | |
50 | #include "objfiles.h" | |
d55e5aa6 | 51 | #include "dwarf2.h" |
4de283e4 TT |
52 | #include "buildsym.h" |
53 | #include "demangle.h" | |
54 | #include "gdb-demangle.h" | |
4de283e4 | 55 | #include "filenames.h" /* for DOSish file names */ |
4de283e4 TT |
56 | #include "language.h" |
57 | #include "complaints.h" | |
82ca8957 TT |
58 | #include "dwarf2/expr.h" |
59 | #include "dwarf2/loc.h" | |
4de283e4 TT |
60 | #include "cp-support.h" |
61 | #include "hashtab.h" | |
62 | #include "command.h" | |
d55e5aa6 | 63 | #include "gdbcmd.h" |
4de283e4 TT |
64 | #include "block.h" |
65 | #include "addrmap.h" | |
66 | #include "typeprint.h" | |
67 | #include "psympriv.h" | |
4de283e4 | 68 | #include "c-lang.h" |
d55e5aa6 | 69 | #include "go-lang.h" |
4de283e4 TT |
70 | #include "valprint.h" |
71 | #include "gdbcore.h" /* for gnutarget */ | |
72 | #include "gdb/gdb-index.h" | |
4de283e4 TT |
73 | #include "gdb_bfd.h" |
74 | #include "f-lang.h" | |
75 | #include "source.h" | |
4de283e4 | 76 | #include "build-id.h" |
d55e5aa6 | 77 | #include "namespace.h" |
268a13a5 TT |
78 | #include "gdbsupport/function-view.h" |
79 | #include "gdbsupport/gdb_optional.h" | |
80 | #include "gdbsupport/underlying.h" | |
268a13a5 | 81 | #include "gdbsupport/hash_enum.h" |
4de283e4 | 82 | #include "filename-seen-cache.h" |
b32b108a | 83 | #include "producer.h" |
4de283e4 | 84 | #include <fcntl.h> |
4de283e4 | 85 | #include <algorithm> |
4de283e4 | 86 | #include <unordered_map> |
268a13a5 | 87 | #include "gdbsupport/selftest.h" |
c9317f21 | 88 | #include "rust-lang.h" |
268a13a5 | 89 | #include "gdbsupport/pathstuff.h" |
edd45eb0 | 90 | #include "count-one-bits.h" |
437afbb8 | 91 | |
73be47f5 DE |
92 | /* When == 1, print basic high level tracing messages. |
93 | When > 1, be more verbose. | |
b4f54984 DE |
94 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
95 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 96 | |
6f738b01 SM |
97 | /* Print a "dwarf-read" debug statement if dwarf_read_debug is >= 1. */ |
98 | ||
99 | #define dwarf_read_debug_printf(fmt, ...) \ | |
74b773fc SM |
100 | debug_prefixed_printf_cond (dwarf_read_debug >= 1, "dwarf-read", fmt, \ |
101 | ##__VA_ARGS__) | |
6f738b01 SM |
102 | |
103 | /* Print a "dwarf-read" debug statement if dwarf_read_debug is >= 2. */ | |
104 | ||
105 | #define dwarf_read_debug_printf_v(fmt, ...) \ | |
74b773fc SM |
106 | debug_prefixed_printf_cond (dwarf_read_debug >= 2, "dwarf-read", fmt, \ |
107 | ##__VA_ARGS__) | |
6f738b01 | 108 | |
d97bc12b | 109 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 110 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 111 | |
27e0867f | 112 | /* When non-zero, dump line number entries as they are read in. */ |
8fdd972c | 113 | unsigned int dwarf_line_debug = 0; |
27e0867f | 114 | |
491144b5 CB |
115 | /* When true, cross-check physname against demangler. */ |
116 | static bool check_physname = false; | |
900e11f9 | 117 | |
491144b5 CB |
118 | /* When true, do not reject deprecated .gdb_index sections. */ |
119 | static bool use_deprecated_index_sections = false; | |
481860b3 | 120 | |
17ee85fc TT |
121 | /* This is used to store the data that is always per objfile. */ |
122 | static const objfile_key<dwarf2_per_objfile> dwarf2_objfile_data_key; | |
123 | ||
124 | /* These are used to store the dwarf2_per_bfd objects. | |
125 | ||
126 | objfiles having the same BFD, which doesn't require relocations, are going to | |
127 | share a dwarf2_per_bfd object, which is held in the _bfd_data_key version. | |
128 | ||
129 | Other objfiles are not going to share a dwarf2_per_bfd with any other | |
130 | objfiles, so they'll have their own version kept in the _objfile_data_key | |
131 | version. */ | |
132 | static const struct bfd_key<dwarf2_per_bfd> dwarf2_per_bfd_bfd_data_key; | |
133 | static const struct objfile_key<dwarf2_per_bfd> dwarf2_per_bfd_objfile_data_key; | |
6502dd73 | 134 | |
f1e6e072 TT |
135 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
136 | ||
137 | static int dwarf2_locexpr_index; | |
138 | static int dwarf2_loclist_index; | |
139 | static int dwarf2_locexpr_block_index; | |
140 | static int dwarf2_loclist_block_index; | |
141 | ||
41144253 | 142 | /* Size of .debug_loclists section header for 32-bit DWARF format. */ |
143 | #define LOCLIST_HEADER_SIZE32 12 | |
144 | ||
145 | /* Size of .debug_loclists section header for 64-bit DWARF format. */ | |
146 | #define LOCLIST_HEADER_SIZE64 20 | |
147 | ||
d0ce17d8 CT |
148 | /* Size of .debug_rnglists section header for 32-bit DWARF format. */ |
149 | #define RNGLIST_HEADER_SIZE32 12 | |
150 | ||
151 | /* Size of .debug_rnglists section header for 64-bit DWARF format. */ | |
152 | #define RNGLIST_HEADER_SIZE64 20 | |
153 | ||
3f563c84 PA |
154 | /* An index into a (C++) symbol name component in a symbol name as |
155 | recorded in the mapped_index's symbol table. For each C++ symbol | |
156 | in the symbol table, we record one entry for the start of each | |
157 | component in the symbol in a table of name components, and then | |
158 | sort the table, in order to be able to binary search symbol names, | |
159 | ignoring leading namespaces, both completion and regular look up. | |
160 | For example, for symbol "A::B::C", we'll have an entry that points | |
161 | to "A::B::C", another that points to "B::C", and another for "C". | |
162 | Note that function symbols in GDB index have no parameter | |
163 | information, just the function/method names. You can convert a | |
164 | name_component to a "const char *" using the | |
165 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
166 | ||
167 | struct name_component | |
168 | { | |
169 | /* Offset in the symbol name where the component starts. Stored as | |
170 | a (32-bit) offset instead of a pointer to save memory and improve | |
171 | locality on 64-bit architectures. */ | |
172 | offset_type name_offset; | |
173 | ||
174 | /* The symbol's index in the symbol and constant pool tables of a | |
175 | mapped_index. */ | |
176 | offset_type idx; | |
177 | }; | |
178 | ||
44ed8f3e PA |
179 | /* Base class containing bits shared by both .gdb_index and |
180 | .debug_name indexes. */ | |
181 | ||
182 | struct mapped_index_base | |
183 | { | |
22ca247e TT |
184 | mapped_index_base () = default; |
185 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
186 | ||
44ed8f3e PA |
187 | /* The name_component table (a sorted vector). See name_component's |
188 | description above. */ | |
189 | std::vector<name_component> name_components; | |
190 | ||
191 | /* How NAME_COMPONENTS is sorted. */ | |
192 | enum case_sensitivity name_components_casing; | |
193 | ||
194 | /* Return the number of names in the symbol table. */ | |
195 | virtual size_t symbol_name_count () const = 0; | |
196 | ||
197 | /* Get the name of the symbol at IDX in the symbol table. */ | |
fcf23d5b SM |
198 | virtual const char *symbol_name_at |
199 | (offset_type idx, dwarf2_per_objfile *per_objfile) const = 0; | |
44ed8f3e PA |
200 | |
201 | /* Return whether the name at IDX in the symbol table should be | |
202 | ignored. */ | |
203 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
204 | { | |
205 | return false; | |
206 | } | |
207 | ||
208 | /* Build the symbol name component sorted vector, if we haven't | |
209 | yet. */ | |
fcf23d5b | 210 | void build_name_components (dwarf2_per_objfile *per_objfile); |
44ed8f3e PA |
211 | |
212 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
213 | possible matches for LN_NO_PARAMS in the name component | |
214 | vector. */ | |
215 | std::pair<std::vector<name_component>::const_iterator, | |
216 | std::vector<name_component>::const_iterator> | |
3b00ef10 | 217 | find_name_components_bounds (const lookup_name_info &ln_no_params, |
fcf23d5b SM |
218 | enum language lang, |
219 | dwarf2_per_objfile *per_objfile) const; | |
44ed8f3e PA |
220 | |
221 | /* Prevent deleting/destroying via a base class pointer. */ | |
222 | protected: | |
223 | ~mapped_index_base() = default; | |
224 | }; | |
225 | ||
9291a0cd TT |
226 | /* A description of the mapped index. The file format is described in |
227 | a comment by the code that writes the index. */ | |
fc898b42 | 228 | struct mapped_index final : public mapped_index_base |
9291a0cd | 229 | { |
f00a2de2 PA |
230 | /* A slot/bucket in the symbol table hash. */ |
231 | struct symbol_table_slot | |
232 | { | |
233 | const offset_type name; | |
234 | const offset_type vec; | |
235 | }; | |
236 | ||
559a7a62 | 237 | /* Index data format version. */ |
3063847f | 238 | int version = 0; |
559a7a62 | 239 | |
f00a2de2 PA |
240 | /* The address table data. */ |
241 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 242 | |
3876f04e | 243 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 244 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 245 | |
9291a0cd | 246 | /* A pointer to the constant pool. */ |
3063847f | 247 | const char *constant_pool = nullptr; |
3f563c84 | 248 | |
44ed8f3e PA |
249 | bool symbol_name_slot_invalid (offset_type idx) const override |
250 | { | |
251 | const auto &bucket = this->symbol_table[idx]; | |
9ab08412 | 252 | return bucket.name == 0 && bucket.vec == 0; |
44ed8f3e | 253 | } |
5c58de74 | 254 | |
3f563c84 PA |
255 | /* Convenience method to get at the name of the symbol at IDX in the |
256 | symbol table. */ | |
fcf23d5b SM |
257 | const char *symbol_name_at |
258 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
f00a2de2 | 259 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 260 | |
44ed8f3e PA |
261 | size_t symbol_name_count () const override |
262 | { return this->symbol_table.size (); } | |
9291a0cd TT |
263 | }; |
264 | ||
927aa2e7 JK |
265 | /* A description of the mapped .debug_names. |
266 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 267 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 JK |
268 | { |
269 | bfd_endian dwarf5_byte_order; | |
270 | bool dwarf5_is_dwarf64; | |
271 | bool augmentation_is_gdb; | |
272 | uint8_t offset_size; | |
273 | uint32_t cu_count = 0; | |
274 | uint32_t tu_count, bucket_count, name_count; | |
275 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
276 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
277 | const gdb_byte *name_table_string_offs_reordered; | |
278 | const gdb_byte *name_table_entry_offs_reordered; | |
279 | const gdb_byte *entry_pool; | |
280 | ||
281 | struct index_val | |
282 | { | |
283 | ULONGEST dwarf_tag; | |
284 | struct attr | |
285 | { | |
286 | /* Attribute name DW_IDX_*. */ | |
287 | ULONGEST dw_idx; | |
288 | ||
289 | /* Attribute form DW_FORM_*. */ | |
290 | ULONGEST form; | |
291 | ||
292 | /* Value if FORM is DW_FORM_implicit_const. */ | |
293 | LONGEST implicit_const; | |
294 | }; | |
295 | std::vector<attr> attr_vec; | |
296 | }; | |
297 | ||
298 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
299 | ||
fcf23d5b SM |
300 | const char *namei_to_name |
301 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const; | |
44ed8f3e PA |
302 | |
303 | /* Implementation of the mapped_index_base virtual interface, for | |
304 | the name_components cache. */ | |
305 | ||
fcf23d5b SM |
306 | const char *symbol_name_at |
307 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
308 | { return namei_to_name (idx, per_objfile); } | |
44ed8f3e PA |
309 | |
310 | size_t symbol_name_count () const override | |
311 | { return this->name_count; } | |
927aa2e7 JK |
312 | }; |
313 | ||
cd4fb1b2 | 314 | /* See dwarf2read.h. */ |
ed2dc618 | 315 | |
cd4fb1b2 | 316 | dwarf2_per_objfile * |
ed2dc618 SM |
317 | get_dwarf2_per_objfile (struct objfile *objfile) |
318 | { | |
5bfd760d | 319 | return dwarf2_objfile_data_key.get (objfile); |
ed2dc618 | 320 | } |
c906108c | 321 | |
251d32d9 | 322 | /* Default names of the debugging sections. */ |
c906108c | 323 | |
233a11ab CS |
324 | /* Note that if the debugging section has been compressed, it might |
325 | have a name like .zdebug_info. */ | |
326 | ||
9938d15a | 327 | const struct dwarf2_debug_sections dwarf2_elf_names = |
9cdd5dbd | 328 | { |
251d32d9 TG |
329 | { ".debug_info", ".zdebug_info" }, |
330 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
331 | { ".debug_line", ".zdebug_line" }, | |
332 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 333 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 334 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 335 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 336 | { ".debug_str", ".zdebug_str" }, |
18a8505e | 337 | { ".debug_str_offsets", ".zdebug_str_offsets" }, |
43988095 | 338 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 339 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 340 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 341 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 342 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
343 | { ".debug_frame", ".zdebug_frame" }, |
344 | { ".eh_frame", NULL }, | |
24d3216f | 345 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
346 | { ".debug_names", ".zdebug_names" }, |
347 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 348 | 23 |
251d32d9 | 349 | }; |
c906108c | 350 | |
80626a55 | 351 | /* List of DWO/DWP sections. */ |
3019eac3 | 352 | |
80626a55 | 353 | static const struct dwop_section_names |
3019eac3 DE |
354 | { |
355 | struct dwarf2_section_names abbrev_dwo; | |
356 | struct dwarf2_section_names info_dwo; | |
357 | struct dwarf2_section_names line_dwo; | |
358 | struct dwarf2_section_names loc_dwo; | |
43988095 | 359 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
360 | struct dwarf2_section_names macinfo_dwo; |
361 | struct dwarf2_section_names macro_dwo; | |
d0ce17d8 | 362 | struct dwarf2_section_names rnglists_dwo; |
3019eac3 DE |
363 | struct dwarf2_section_names str_dwo; |
364 | struct dwarf2_section_names str_offsets_dwo; | |
365 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
366 | struct dwarf2_section_names cu_index; |
367 | struct dwarf2_section_names tu_index; | |
3019eac3 | 368 | } |
80626a55 | 369 | dwop_section_names = |
3019eac3 DE |
370 | { |
371 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
372 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
373 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
374 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 375 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
376 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
377 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
d0ce17d8 | 378 | { ".debug_rnglists.dwo", ".zdebug_rnglists.dwo" }, |
3019eac3 DE |
379 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
380 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
381 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
382 | { ".debug_cu_index", ".zdebug_cu_index" }, |
383 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
384 | }; |
385 | ||
c906108c SS |
386 | /* local data types */ |
387 | ||
d0ce17d8 CT |
388 | /* The location list and range list sections (.debug_loclists & .debug_rnglists) |
389 | begin with a header, which contains the following information. */ | |
390 | struct loclists_rnglists_header | |
41144253 | 391 | { |
392 | /* A 4-byte or 12-byte length containing the length of the | |
393 | set of entries for this compilation unit, not including the | |
394 | length field itself. */ | |
395 | unsigned int length; | |
396 | ||
397 | /* A 2-byte version identifier. */ | |
398 | short version; | |
399 | ||
400 | /* A 1-byte unsigned integer containing the size in bytes of an address on | |
401 | the target system. */ | |
402 | unsigned char addr_size; | |
403 | ||
404 | /* A 1-byte unsigned integer containing the size in bytes of a segment selector | |
405 | on the target system. */ | |
406 | unsigned char segment_collector_size; | |
407 | ||
408 | /* A 4-byte count of the number of offsets that follow the header. */ | |
409 | unsigned int offset_entry_count; | |
410 | }; | |
411 | ||
3da10d80 KS |
412 | /* Type used for delaying computation of method physnames. |
413 | See comments for compute_delayed_physnames. */ | |
414 | struct delayed_method_info | |
415 | { | |
416 | /* The type to which the method is attached, i.e., its parent class. */ | |
417 | struct type *type; | |
418 | ||
419 | /* The index of the method in the type's function fieldlists. */ | |
420 | int fnfield_index; | |
421 | ||
422 | /* The index of the method in the fieldlist. */ | |
423 | int index; | |
424 | ||
425 | /* The name of the DIE. */ | |
426 | const char *name; | |
427 | ||
428 | /* The DIE associated with this method. */ | |
429 | struct die_info *die; | |
430 | }; | |
431 | ||
e7c27a73 DJ |
432 | /* Internal state when decoding a particular compilation unit. */ |
433 | struct dwarf2_cu | |
434 | { | |
9e021579 SM |
435 | explicit dwarf2_cu (dwarf2_per_cu_data *per_cu, |
436 | dwarf2_per_objfile *per_objfile); | |
fcd3b13d SM |
437 | |
438 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
439 | ||
c24bdb02 KS |
440 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
441 | Create the set of symtabs used by this TU, or if this TU is sharing | |
442 | symtabs with another TU and the symtabs have already been created | |
443 | then restore those symtabs in the line header. | |
444 | We don't need the pc/line-number mapping for type units. */ | |
445 | void setup_type_unit_groups (struct die_info *die); | |
446 | ||
447 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
448 | buildsym_compunit constructor. */ | |
449 | struct compunit_symtab *start_symtab (const char *name, | |
450 | const char *comp_dir, | |
451 | CORE_ADDR low_pc); | |
452 | ||
453 | /* Reset the builder. */ | |
454 | void reset_builder () { m_builder.reset (); } | |
455 | ||
293e7e51 SM |
456 | /* Return a type that is a generic pointer type, the size of which |
457 | matches the address size given in the compilation unit header for | |
458 | this CU. */ | |
459 | struct type *addr_type () const; | |
460 | ||
461 | /* Find an integer type the same size as the address size given in | |
462 | the compilation unit header for this CU. UNSIGNED_P controls if | |
463 | the integer is unsigned or not. */ | |
464 | struct type *addr_sized_int_type (bool unsigned_p) const; | |
465 | ||
d00adf39 | 466 | /* The header of the compilation unit. */ |
fcd3b13d | 467 | struct comp_unit_head header {}; |
e142c38c | 468 | |
d00adf39 | 469 | /* Base address of this compilation unit. */ |
2b24b6e4 | 470 | gdb::optional<CORE_ADDR> base_address; |
d00adf39 | 471 | |
e142c38c | 472 | /* The language we are debugging. */ |
fcd3b13d SM |
473 | enum language language = language_unknown; |
474 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 475 | |
fcd3b13d | 476 | const char *producer = nullptr; |
b0f35d58 | 477 | |
c24bdb02 | 478 | private: |
804d2729 TT |
479 | /* The symtab builder for this CU. This is only non-NULL when full |
480 | symbols are being read. */ | |
c24bdb02 | 481 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 482 | |
c24bdb02 | 483 | public: |
e142c38c DJ |
484 | /* The generic symbol table building routines have separate lists for |
485 | file scope symbols and all all other scopes (local scopes). So | |
486 | we need to select the right one to pass to add_symbol_to_list(). | |
487 | We do it by keeping a pointer to the correct list in list_in_scope. | |
488 | ||
489 | FIXME: The original dwarf code just treated the file scope as the | |
490 | first local scope, and all other local scopes as nested local | |
491 | scopes, and worked fine. Check to see if we really need to | |
492 | distinguish these in buildsym.c. */ | |
fcd3b13d | 493 | struct pending **list_in_scope = nullptr; |
e142c38c | 494 | |
b64f50a1 JK |
495 | /* Hash table holding all the loaded partial DIEs |
496 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 497 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
498 | |
499 | /* Storage for things with the same lifetime as this read-in compilation | |
500 | unit, including partial DIEs. */ | |
fcd3b13d | 501 | auto_obstack comp_unit_obstack; |
72bf9492 | 502 | |
69d751e3 | 503 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
504 | struct dwarf2_per_cu_data *per_cu; |
505 | ||
9e021579 | 506 | /* The dwarf2_per_objfile that owns this. */ |
976ca316 | 507 | dwarf2_per_objfile *per_objfile; |
9e021579 | 508 | |
ae038cb0 | 509 | /* How many compilation units ago was this CU last referenced? */ |
fcd3b13d | 510 | int last_used = 0; |
ae038cb0 | 511 | |
b64f50a1 JK |
512 | /* A hash table of DIE cu_offset for following references with |
513 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 514 | htab_t die_hash = nullptr; |
10b3939b DJ |
515 | |
516 | /* Full DIEs if read in. */ | |
fcd3b13d | 517 | struct die_info *dies = nullptr; |
10b3939b DJ |
518 | |
519 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
520 | units referenced by this one. Only set during full symbol processing; | |
521 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 522 | htab_t dependencies = nullptr; |
10b3939b | 523 | |
cb1df416 | 524 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 525 | struct line_header *line_header = nullptr; |
4c8aa72d | 526 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
5989a64e | 527 | it's owned by dwarf2_per_bfd::line_header_hash. If non-NULL, |
4c8aa72d PA |
528 | this is the DW_TAG_compile_unit die for this CU. We'll hold on |
529 | to the line header as long as this DIE is being processed. See | |
530 | process_die_scope. */ | |
fcd3b13d | 531 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 532 | |
3da10d80 KS |
533 | /* A list of methods which need to have physnames computed |
534 | after all type information has been read. */ | |
c89b44cd | 535 | std::vector<delayed_method_info> method_list; |
3da10d80 | 536 | |
96408a79 | 537 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 538 | htab_t call_site_htab = nullptr; |
96408a79 | 539 | |
034e5797 DE |
540 | /* Non-NULL if this CU came from a DWO file. |
541 | There is an invariant here that is important to remember: | |
542 | Except for attributes copied from the top level DIE in the "main" | |
543 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 544 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
545 | Either there isn't a DWO file (in which case this is NULL and the point |
546 | is moot), or there is and either we're not going to read it (in which | |
547 | case this is NULL) or there is and we are reading it (in which case this | |
548 | is non-NULL). */ | |
fcd3b13d | 549 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 550 | |
18a8505e | 551 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 552 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 553 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 554 | |
2b0c7f41 SM |
555 | /* The DW_AT_GNU_ranges_base attribute, if present. |
556 | ||
557 | This is only relevant in the context of pre-DWARF 5 split units. In this | |
558 | context, there is a .debug_ranges section in the linked executable, | |
559 | containing all the ranges data for all the compilation units. Each | |
560 | skeleton/stub unit has (if needed) a DW_AT_GNU_ranges_base attribute that | |
561 | indicates the base of its contribution to that section. The DW_AT_ranges | |
562 | attributes in the split-unit are of the form DW_FORM_sec_offset and point | |
563 | into the .debug_ranges section of the linked file. However, they are not | |
564 | "true" DW_FORM_sec_offset, because they are relative to the base of their | |
565 | compilation unit's contribution, rather than relative to the beginning of | |
566 | the section. The DW_AT_GNU_ranges_base value must be added to it to make | |
567 | it relative to the beginning of the section. | |
568 | ||
569 | Note that the value is zero when we are not in a pre-DWARF 5 split-unit | |
570 | case, so this value can be added without needing to know whether we are in | |
571 | this case or not. | |
572 | ||
573 | N.B. If a DW_AT_ranges attribute is found on the DW_TAG_compile_unit in the | |
574 | skeleton/stub, it must not have the base added, as it already points to the | |
575 | right place. And since the DW_TAG_compile_unit DIE in the split-unit can't | |
576 | have a DW_AT_ranges attribute, we can use the | |
577 | ||
578 | die->tag != DW_AT_compile_unit | |
579 | ||
580 | to determine whether the base should be added or not. */ | |
581 | ULONGEST gnu_ranges_base = 0; | |
582 | ||
583 | /* The DW_AT_rnglists_base attribute, if present. | |
584 | ||
585 | This is used when processing attributes of form DW_FORM_rnglistx in | |
586 | non-split units. Attributes of this form found in a split unit don't | |
587 | use it, as split-unit files have their own non-shared .debug_rnglists.dwo | |
588 | section. */ | |
589 | ULONGEST rnglists_base = 0; | |
2e3cf129 | 590 | |
41144253 | 591 | /* The DW_AT_loclists_base attribute if present. */ |
592 | ULONGEST loclist_base = 0; | |
593 | ||
c9317f21 TT |
594 | /* When reading debug info generated by older versions of rustc, we |
595 | have to rewrite some union types to be struct types with a | |
596 | variant part. This rewriting must be done after the CU is fully | |
597 | read in, because otherwise at the point of rewriting some struct | |
598 | type might not have been fully processed. So, we keep a list of | |
599 | all such types here and process them after expansion. */ | |
600 | std::vector<struct type *> rust_unions; | |
601 | ||
18a8505e AT |
602 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
603 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
604 | value is often implicit and is the size of the header of | |
605 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
606 | gdb::optional<ULONGEST> str_offsets_base; | |
607 | ||
ae038cb0 | 608 | /* Mark used when releasing cached dies. */ |
9068261f | 609 | bool mark : 1; |
ae038cb0 | 610 | |
8be455d7 JK |
611 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
612 | This test is imperfect as there may exist optimized debug code not using | |
613 | any location list and still facing inlining issues if handled as | |
614 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 615 | bool has_loclist : 1; |
ba919b58 | 616 | |
9068261f | 617 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
618 | if all the producer_is_* fields are valid. This information is cached |
619 | because profiling CU expansion showed excessive time spent in | |
620 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
621 | bool checked_producer : 1; |
622 | bool producer_is_gxx_lt_4_6 : 1; | |
623 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 624 | bool producer_is_icc : 1; |
9068261f | 625 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 626 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 627 | |
9068261f | 628 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
629 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
630 | this information, but later versions do. */ | |
631 | ||
9068261f | 632 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
633 | |
634 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
635 | |
636 | /* If this CU was inherited by another CU (via specification, | |
637 | abstract_origin, etc), this is the ancestor CU. */ | |
638 | dwarf2_cu *ancestor; | |
639 | ||
640 | /* Get the buildsym_compunit for this CU. */ | |
641 | buildsym_compunit *get_builder () | |
642 | { | |
643 | /* If this CU has a builder associated with it, use that. */ | |
644 | if (m_builder != nullptr) | |
645 | return m_builder.get (); | |
646 | ||
647 | /* Otherwise, search ancestors for a valid builder. */ | |
648 | if (ancestor != nullptr) | |
649 | return ancestor->get_builder (); | |
650 | ||
651 | return nullptr; | |
652 | } | |
e7c27a73 DJ |
653 | }; |
654 | ||
094b34ac DE |
655 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
656 | This includes type_unit_group and quick_file_names. */ | |
657 | ||
658 | struct stmt_list_hash | |
659 | { | |
660 | /* The DWO unit this table is from or NULL if there is none. */ | |
661 | struct dwo_unit *dwo_unit; | |
662 | ||
663 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 664 | sect_offset line_sect_off; |
094b34ac DE |
665 | }; |
666 | ||
5989a64e | 667 | /* Each element of dwarf2_per_bfd->type_unit_groups is a pointer to |
8adb8487 TT |
668 | an object of this type. This contains elements of type unit groups |
669 | that can be shared across objfiles. The non-shareable parts are in | |
670 | type_unit_group_unshareable. */ | |
f4dc4d17 DE |
671 | |
672 | struct type_unit_group | |
673 | { | |
0186c6a7 | 674 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
675 | To simplify things we create an artificial CU that "includes" all the |
676 | type units using this stmt_list so that the rest of the code still has | |
197400e8 | 677 | a "per_cu" handle on the symtab. */ |
094b34ac DE |
678 | struct dwarf2_per_cu_data per_cu; |
679 | ||
0186c6a7 DE |
680 | /* The TUs that share this DW_AT_stmt_list entry. |
681 | This is added to while parsing type units to build partial symtabs, | |
682 | and is deleted afterwards and not used again. */ | |
a8b3b8e9 | 683 | std::vector<signatured_type *> *tus; |
f4dc4d17 | 684 | |
094b34ac DE |
685 | /* The data used to construct the hash key. */ |
686 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
687 | }; |
688 | ||
73869dc2 | 689 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
690 | |
691 | struct dwo_sections | |
692 | { | |
693 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
694 | struct dwarf2_section_info line; |
695 | struct dwarf2_section_info loc; | |
43988095 | 696 | struct dwarf2_section_info loclists; |
09262596 DE |
697 | struct dwarf2_section_info macinfo; |
698 | struct dwarf2_section_info macro; | |
d0ce17d8 | 699 | struct dwarf2_section_info rnglists; |
3019eac3 DE |
700 | struct dwarf2_section_info str; |
701 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
702 | /* In the case of a virtual DWO file, these two are unused. */ |
703 | struct dwarf2_section_info info; | |
fd5866f6 | 704 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
705 | }; |
706 | ||
c88ee1f0 | 707 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
708 | |
709 | struct dwo_unit | |
710 | { | |
711 | /* Backlink to the containing struct dwo_file. */ | |
712 | struct dwo_file *dwo_file; | |
713 | ||
714 | /* The "id" that distinguishes this CU/TU. | |
715 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
716 | Since signatures came first, we stick with it for consistency. */ | |
717 | ULONGEST signature; | |
718 | ||
719 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 720 | struct dwarf2_section_info *section; |
3019eac3 | 721 | |
9c541725 PA |
722 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
723 | sect_offset sect_off; | |
3019eac3 DE |
724 | unsigned int length; |
725 | ||
726 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
727 | cu_offset type_offset_in_tu; | |
728 | }; | |
729 | ||
73869dc2 DE |
730 | /* include/dwarf2.h defines the DWP section codes. |
731 | It defines a max value but it doesn't define a min value, which we | |
732 | use for error checking, so provide one. */ | |
733 | ||
734 | enum dwp_v2_section_ids | |
735 | { | |
736 | DW_SECT_MIN = 1 | |
737 | }; | |
738 | ||
80626a55 | 739 | /* Data for one DWO file. |
57d63ce2 DE |
740 | |
741 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
742 | appears in a DWP file). DWP files don't really have DWO files per se - | |
743 | comdat folding of types "loses" the DWO file they came from, and from | |
744 | a high level view DWP files appear to contain a mass of random types. | |
745 | However, to maintain consistency with the non-DWP case we pretend DWP | |
746 | files contain virtual DWO files, and we assign each TU with one virtual | |
747 | DWO file (generally based on the line and abbrev section offsets - | |
748 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
749 | |
750 | struct dwo_file | |
751 | { | |
51ac9db5 SM |
752 | dwo_file () = default; |
753 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
754 | ||
18a8505e | 755 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
756 | For virtual DWO files the name is constructed from the section offsets |
757 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
758 | from related CU+TUs. */ | |
51ac9db5 | 759 | const char *dwo_name = nullptr; |
0ac5b59e DE |
760 | |
761 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 762 | const char *comp_dir = nullptr; |
3019eac3 | 763 | |
80626a55 DE |
764 | /* The bfd, when the file is open. Otherwise this is NULL. |
765 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 766 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 767 | |
73869dc2 | 768 | /* The sections that make up this DWO file. |
d2854d8d | 769 | Remember that for virtual DWO files in DWP V2 or DWP V5, these are virtual |
73869dc2 | 770 | sections (for lack of a better name). */ |
51ac9db5 | 771 | struct dwo_sections sections {}; |
3019eac3 | 772 | |
33c5cd75 DB |
773 | /* The CUs in the file. |
774 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
775 | an extension to handle LLVM's Link Time Optimization output (where | |
776 | multiple source files may be compiled into a single object/dwo pair). */ | |
b0b6a987 | 777 | htab_up cus; |
3019eac3 DE |
778 | |
779 | /* Table of TUs in the file. | |
780 | Each element is a struct dwo_unit. */ | |
b0b6a987 | 781 | htab_up tus; |
3019eac3 DE |
782 | }; |
783 | ||
80626a55 DE |
784 | /* These sections are what may appear in a DWP file. */ |
785 | ||
786 | struct dwp_sections | |
787 | { | |
d2854d8d | 788 | /* These are used by all DWP versions (1, 2 and 5). */ |
80626a55 DE |
789 | struct dwarf2_section_info str; |
790 | struct dwarf2_section_info cu_index; | |
791 | struct dwarf2_section_info tu_index; | |
73869dc2 | 792 | |
d2854d8d | 793 | /* These are only used by DWP version 2 and version 5 files. |
73869dc2 DE |
794 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other |
795 | sections are referenced by section number, and are not recorded here. | |
d2854d8d CT |
796 | In DWP version 2 or 5 there is at most one copy of all these sections, |
797 | each section being (effectively) comprised of the concatenation of all of | |
798 | the individual sections that exist in the version 1 format. | |
73869dc2 DE |
799 | To keep the code simple we treat each of these concatenated pieces as a |
800 | section itself (a virtual section?). */ | |
801 | struct dwarf2_section_info abbrev; | |
802 | struct dwarf2_section_info info; | |
803 | struct dwarf2_section_info line; | |
804 | struct dwarf2_section_info loc; | |
d2854d8d | 805 | struct dwarf2_section_info loclists; |
73869dc2 DE |
806 | struct dwarf2_section_info macinfo; |
807 | struct dwarf2_section_info macro; | |
d2854d8d | 808 | struct dwarf2_section_info rnglists; |
73869dc2 DE |
809 | struct dwarf2_section_info str_offsets; |
810 | struct dwarf2_section_info types; | |
80626a55 DE |
811 | }; |
812 | ||
73869dc2 DE |
813 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
814 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 815 | |
73869dc2 | 816 | struct virtual_v1_dwo_sections |
80626a55 DE |
817 | { |
818 | struct dwarf2_section_info abbrev; | |
819 | struct dwarf2_section_info line; | |
820 | struct dwarf2_section_info loc; | |
821 | struct dwarf2_section_info macinfo; | |
822 | struct dwarf2_section_info macro; | |
823 | struct dwarf2_section_info str_offsets; | |
824 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 825 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
826 | struct dwarf2_section_info info_or_types; |
827 | }; | |
828 | ||
d2854d8d | 829 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2 or 5. |
73869dc2 DE |
830 | In version 2, the sections of the DWO files are concatenated together |
831 | and stored in one section of that name. Thus each ELF section contains | |
832 | several "virtual" sections. */ | |
833 | ||
d2854d8d | 834 | struct virtual_v2_or_v5_dwo_sections |
73869dc2 DE |
835 | { |
836 | bfd_size_type abbrev_offset; | |
837 | bfd_size_type abbrev_size; | |
838 | ||
839 | bfd_size_type line_offset; | |
840 | bfd_size_type line_size; | |
841 | ||
842 | bfd_size_type loc_offset; | |
843 | bfd_size_type loc_size; | |
844 | ||
d2854d8d CT |
845 | bfd_size_type loclists_offset; |
846 | bfd_size_type loclists_size; | |
847 | ||
73869dc2 DE |
848 | bfd_size_type macinfo_offset; |
849 | bfd_size_type macinfo_size; | |
850 | ||
851 | bfd_size_type macro_offset; | |
852 | bfd_size_type macro_size; | |
853 | ||
d2854d8d CT |
854 | bfd_size_type rnglists_offset; |
855 | bfd_size_type rnglists_size; | |
856 | ||
73869dc2 DE |
857 | bfd_size_type str_offsets_offset; |
858 | bfd_size_type str_offsets_size; | |
859 | ||
860 | /* Each DWP hash table entry records one CU or one TU. | |
861 | That is recorded here, and copied to dwo_unit.section. */ | |
862 | bfd_size_type info_or_types_offset; | |
863 | bfd_size_type info_or_types_size; | |
864 | }; | |
865 | ||
80626a55 DE |
866 | /* Contents of DWP hash tables. */ |
867 | ||
868 | struct dwp_hash_table | |
869 | { | |
73869dc2 | 870 | uint32_t version, nr_columns; |
80626a55 | 871 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
872 | const gdb_byte *hash_table, *unit_table; |
873 | union | |
874 | { | |
875 | struct | |
876 | { | |
877 | const gdb_byte *indices; | |
878 | } v1; | |
879 | struct | |
880 | { | |
881 | /* This is indexed by column number and gives the id of the section | |
882 | in that column. */ | |
883 | #define MAX_NR_V2_DWO_SECTIONS \ | |
884 | (1 /* .debug_info or .debug_types */ \ | |
885 | + 1 /* .debug_abbrev */ \ | |
886 | + 1 /* .debug_line */ \ | |
887 | + 1 /* .debug_loc */ \ | |
888 | + 1 /* .debug_str_offsets */ \ | |
889 | + 1 /* .debug_macro or .debug_macinfo */) | |
890 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
891 | const gdb_byte *offsets; | |
892 | const gdb_byte *sizes; | |
893 | } v2; | |
d2854d8d CT |
894 | struct |
895 | { | |
896 | /* This is indexed by column number and gives the id of the section | |
897 | in that column. */ | |
898 | #define MAX_NR_V5_DWO_SECTIONS \ | |
899 | (1 /* .debug_info */ \ | |
900 | + 1 /* .debug_abbrev */ \ | |
901 | + 1 /* .debug_line */ \ | |
902 | + 1 /* .debug_loclists */ \ | |
903 | + 1 /* .debug_str_offsets */ \ | |
904 | + 1 /* .debug_macro */ \ | |
905 | + 1 /* .debug_rnglists */) | |
906 | int section_ids[MAX_NR_V5_DWO_SECTIONS]; | |
907 | const gdb_byte *offsets; | |
908 | const gdb_byte *sizes; | |
909 | } v5; | |
73869dc2 | 910 | } section_pool; |
80626a55 DE |
911 | }; |
912 | ||
913 | /* Data for one DWP file. */ | |
914 | ||
915 | struct dwp_file | |
916 | { | |
400174b1 TT |
917 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
918 | : name (name_), | |
919 | dbfd (std::move (abfd)) | |
920 | { | |
921 | } | |
922 | ||
80626a55 DE |
923 | /* Name of the file. */ |
924 | const char *name; | |
925 | ||
73869dc2 | 926 | /* File format version. */ |
400174b1 | 927 | int version = 0; |
73869dc2 | 928 | |
93417882 | 929 | /* The bfd. */ |
400174b1 | 930 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
931 | |
932 | /* Section info for this file. */ | |
400174b1 | 933 | struct dwp_sections sections {}; |
80626a55 | 934 | |
57d63ce2 | 935 | /* Table of CUs in the file. */ |
400174b1 | 936 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
937 | |
938 | /* Table of TUs in the file. */ | |
400174b1 | 939 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 940 | |
19ac8c2e | 941 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
48b490f2 TT |
942 | htab_up loaded_cus; |
943 | htab_up loaded_tus; | |
80626a55 | 944 | |
73869dc2 DE |
945 | /* Table to map ELF section numbers to their sections. |
946 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
947 | unsigned int num_sections = 0; |
948 | asection **elf_sections = nullptr; | |
80626a55 DE |
949 | }; |
950 | ||
0963b4bd MS |
951 | /* Struct used to pass misc. parameters to read_die_and_children, et |
952 | al. which are used for both .debug_info and .debug_types dies. | |
953 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 954 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
955 | |
956 | struct die_reader_specs | |
957 | { | |
a32a8923 | 958 | /* The bfd of die_section. */ |
0280fdcc | 959 | bfd *abfd; |
93311388 DE |
960 | |
961 | /* The CU of the DIE we are parsing. */ | |
962 | struct dwarf2_cu *cu; | |
963 | ||
80626a55 | 964 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
965 | struct dwo_file *dwo_file; |
966 | ||
dee91e82 | 967 | /* The section the die comes from. |
3019eac3 | 968 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
969 | struct dwarf2_section_info *die_section; |
970 | ||
971 | /* die_section->buffer. */ | |
d521ce57 | 972 | const gdb_byte *buffer; |
f664829e DE |
973 | |
974 | /* The end of the buffer. */ | |
975 | const gdb_byte *buffer_end; | |
a2ce51a0 | 976 | |
685af9cd TT |
977 | /* The abbreviation table to use when reading the DIEs. */ |
978 | struct abbrev_table *abbrev_table; | |
93311388 DE |
979 | }; |
980 | ||
c0ab21c2 TT |
981 | /* A subclass of die_reader_specs that holds storage and has complex |
982 | constructor and destructor behavior. */ | |
983 | ||
984 | class cutu_reader : public die_reader_specs | |
985 | { | |
986 | public: | |
987 | ||
ab432490 SM |
988 | cutu_reader (dwarf2_per_cu_data *this_cu, |
989 | dwarf2_per_objfile *per_objfile, | |
c0ab21c2 | 990 | struct abbrev_table *abbrev_table, |
2e671100 | 991 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
992 | bool skip_partial); |
993 | ||
994 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
ab432490 | 995 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
996 | struct dwarf2_cu *parent_cu = nullptr, |
997 | struct dwo_file *dwo_file = nullptr); | |
998 | ||
c0ab21c2 TT |
999 | DISABLE_COPY_AND_ASSIGN (cutu_reader); |
1000 | ||
1001 | const gdb_byte *info_ptr = nullptr; | |
1002 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
1003 | bool dummy_p = false; |
1004 | ||
6751ebae TT |
1005 | /* Release the new CU, putting it on the chain. This cannot be done |
1006 | for dummy CUs. */ | |
1007 | void keep (); | |
1008 | ||
c0ab21c2 | 1009 | private: |
9e021579 SM |
1010 | void init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
1011 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 1012 | dwarf2_cu *existing_cu); |
c0ab21c2 TT |
1013 | |
1014 | struct dwarf2_per_cu_data *m_this_cu; | |
c0ab21c2 TT |
1015 | std::unique_ptr<dwarf2_cu> m_new_cu; |
1016 | ||
1017 | /* The ordinary abbreviation table. */ | |
1018 | abbrev_table_up m_abbrev_table_holder; | |
1019 | ||
1020 | /* The DWO abbreviation table. */ | |
1021 | abbrev_table_up m_dwo_abbrev_table; | |
1022 | }; | |
dee91e82 | 1023 | |
c906108c | 1024 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1025 | need this much information. */ |
6f06d47b | 1026 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1027 | { |
7c32eebb | 1028 | partial_die_info (sect_offset sect_off, const struct abbrev_info *abbrev); |
6f06d47b YQ |
1029 | |
1030 | /* Disable assign but still keep copy ctor, which is needed | |
1031 | load_partial_dies. */ | |
1032 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1033 | ||
52356b79 YQ |
1034 | /* Adjust the partial die before generating a symbol for it. This |
1035 | function may set the is_external flag or change the DIE's | |
1036 | name. */ | |
1037 | void fixup (struct dwarf2_cu *cu); | |
1038 | ||
48fbe735 YQ |
1039 | /* Read a minimal amount of information into the minimal die |
1040 | structure. */ | |
1041 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1042 | const struct abbrev_info &abbrev, | |
1043 | const gdb_byte *info_ptr); | |
1044 | ||
7d00ffec TT |
1045 | /* Compute the name of this partial DIE. This memoizes the |
1046 | result, so it is safe to call multiple times. */ | |
1047 | const char *name (dwarf2_cu *cu); | |
1048 | ||
72bf9492 | 1049 | /* Offset of this DIE. */ |
6f06d47b | 1050 | const sect_offset sect_off; |
72bf9492 DJ |
1051 | |
1052 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1053 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1054 | |
72bf9492 | 1055 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1056 | const unsigned int has_children : 1; |
1057 | ||
72bf9492 DJ |
1058 | unsigned int is_external : 1; |
1059 | unsigned int is_declaration : 1; | |
1060 | unsigned int has_type : 1; | |
1061 | unsigned int has_specification : 1; | |
1062 | unsigned int has_pc_info : 1; | |
481860b3 | 1063 | unsigned int may_be_inlined : 1; |
72bf9492 | 1064 | |
0c1b455e TT |
1065 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1066 | unsigned int main_subprogram : 1; | |
1067 | ||
72bf9492 DJ |
1068 | /* Flag set if the SCOPE field of this structure has been |
1069 | computed. */ | |
1070 | unsigned int scope_set : 1; | |
1071 | ||
fa4028e9 JB |
1072 | /* Flag set if the DIE has a byte_size attribute. */ |
1073 | unsigned int has_byte_size : 1; | |
1074 | ||
ff908ebf AW |
1075 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1076 | unsigned int has_const_value : 1; | |
1077 | ||
98bfdba5 PA |
1078 | /* Flag set if any of the DIE's children are template arguments. */ |
1079 | unsigned int has_template_arguments : 1; | |
1080 | ||
52356b79 | 1081 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1082 | unsigned int fixup_called : 1; |
1083 | ||
36586728 TT |
1084 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1085 | unsigned int is_dwz : 1; | |
1086 | ||
1087 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1088 | unsigned int spec_is_dwz : 1; | |
1089 | ||
7d00ffec TT |
1090 | unsigned int canonical_name : 1; |
1091 | ||
72bf9492 | 1092 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1093 | sometimes a default name for unnamed DIEs. */ |
7d00ffec | 1094 | const char *raw_name = nullptr; |
72bf9492 | 1095 | |
abc72ce4 | 1096 | /* The linkage name, if present. */ |
6f06d47b | 1097 | const char *linkage_name = nullptr; |
abc72ce4 | 1098 | |
72bf9492 DJ |
1099 | /* The scope to prepend to our children. This is generally |
1100 | allocated on the comp_unit_obstack, so will disappear | |
1101 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1102 | const char *scope = nullptr; |
72bf9492 | 1103 | |
95554aad TT |
1104 | /* Some data associated with the partial DIE. The tag determines |
1105 | which field is live. */ | |
1106 | union | |
1107 | { | |
1108 | /* The location description associated with this DIE, if any. */ | |
1109 | struct dwarf_block *locdesc; | |
1110 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1111 | sect_offset sect_off; |
6f06d47b | 1112 | } d {}; |
72bf9492 DJ |
1113 | |
1114 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1115 | CORE_ADDR lowpc = 0; |
1116 | CORE_ADDR highpc = 0; | |
72bf9492 | 1117 | |
93311388 | 1118 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1119 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1120 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1121 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1122 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1123 | |
1124 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1125 | DW_AT_specification (or DW_AT_abstract_origin or | |
1126 | DW_AT_extension). */ | |
6f06d47b | 1127 | sect_offset spec_offset {}; |
72bf9492 DJ |
1128 | |
1129 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1130 | if any. */ | |
6f06d47b YQ |
1131 | struct partial_die_info *die_parent = nullptr; |
1132 | struct partial_die_info *die_child = nullptr; | |
1133 | struct partial_die_info *die_sibling = nullptr; | |
1134 | ||
1135 | friend struct partial_die_info * | |
1136 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1137 | ||
1138 | private: | |
1139 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1140 | partial_die_info (sect_offset sect_off) | |
1141 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1142 | { | |
1143 | } | |
1144 | ||
1145 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1146 | int has_children_) | |
1147 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1148 | { | |
1149 | is_external = 0; | |
1150 | is_declaration = 0; | |
1151 | has_type = 0; | |
1152 | has_specification = 0; | |
1153 | has_pc_info = 0; | |
1154 | may_be_inlined = 0; | |
1155 | main_subprogram = 0; | |
1156 | scope_set = 0; | |
1157 | has_byte_size = 0; | |
1158 | has_const_value = 0; | |
1159 | has_template_arguments = 0; | |
1160 | fixup_called = 0; | |
1161 | is_dwz = 0; | |
1162 | spec_is_dwz = 0; | |
7d00ffec | 1163 | canonical_name = 0; |
6f06d47b | 1164 | } |
c906108c SS |
1165 | }; |
1166 | ||
c906108c SS |
1167 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1168 | but this would require a corresponding change in unpack_field_as_long | |
1169 | and friends. */ | |
1170 | static int bits_per_byte = 8; | |
1171 | ||
9c6a1327 TT |
1172 | struct variant_part_builder; |
1173 | ||
1174 | /* When reading a variant, we track a bit more information about the | |
1175 | field, and store it in an object of this type. */ | |
2ddeaf8a TT |
1176 | |
1177 | struct variant_field | |
1178 | { | |
9c6a1327 TT |
1179 | int first_field = -1; |
1180 | int last_field = -1; | |
1181 | ||
1182 | /* A variant can contain other variant parts. */ | |
1183 | std::vector<variant_part_builder> variant_parts; | |
1184 | ||
2ddeaf8a TT |
1185 | /* If we see a DW_TAG_variant, then this will be set if this is the |
1186 | default branch. */ | |
9c6a1327 TT |
1187 | bool default_branch = false; |
1188 | /* If we see a DW_AT_discr_value, then this will be the discriminant | |
1189 | value. */ | |
1190 | ULONGEST discriminant_value = 0; | |
1191 | /* If we see a DW_AT_discr_list, then this is a pointer to the list | |
1192 | data. */ | |
1193 | struct dwarf_block *discr_list_data = nullptr; | |
1194 | }; | |
1195 | ||
1196 | /* This represents a DW_TAG_variant_part. */ | |
1197 | ||
1198 | struct variant_part_builder | |
1199 | { | |
1200 | /* The offset of the discriminant field. */ | |
1201 | sect_offset discriminant_offset {}; | |
1202 | ||
1203 | /* Variants that are direct children of this variant part. */ | |
1204 | std::vector<variant_field> variants; | |
1205 | ||
1206 | /* True if we're currently reading a variant. */ | |
1207 | bool processing_variant = false; | |
2ddeaf8a TT |
1208 | }; |
1209 | ||
52059ffd TT |
1210 | struct nextfield |
1211 | { | |
be2daae6 TT |
1212 | int accessibility = 0; |
1213 | int virtuality = 0; | |
9c6a1327 TT |
1214 | /* Variant parts need to find the discriminant, which is a DIE |
1215 | reference. We track the section offset of each field to make | |
1216 | this link. */ | |
1217 | sect_offset offset; | |
be2daae6 | 1218 | struct field field {}; |
52059ffd TT |
1219 | }; |
1220 | ||
1221 | struct fnfieldlist | |
1222 | { | |
be2daae6 TT |
1223 | const char *name = nullptr; |
1224 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1225 | }; |
1226 | ||
c906108c SS |
1227 | /* The routines that read and process dies for a C struct or C++ class |
1228 | pass lists of data member fields and lists of member function fields | |
1229 | in an instance of a field_info structure, as defined below. */ | |
1230 | struct field_info | |
2de01bdb SM |
1231 | { |
1232 | /* List of data member and baseclasses fields. */ | |
1233 | std::vector<struct nextfield> fields; | |
1234 | std::vector<struct nextfield> baseclasses; | |
1235 | ||
1236 | /* Set if the accessibility of one of the fields is not public. */ | |
264fc0e2 | 1237 | bool non_public_fields = false; |
2de01bdb SM |
1238 | |
1239 | /* Member function fieldlist array, contains name of possibly overloaded | |
1240 | member function, number of overloaded member functions and a pointer | |
1241 | to the head of the member function field chain. */ | |
1242 | std::vector<struct fnfieldlist> fnfieldlists; | |
1243 | ||
1244 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1245 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1246 | std::vector<struct decl_field> typedef_field_list; | |
1247 | ||
1248 | /* Nested types defined by this class and the number of elements in this | |
1249 | list. */ | |
1250 | std::vector<struct decl_field> nested_types_list; | |
1251 | ||
1252 | /* If non-null, this is the variant part we are currently | |
1253 | reading. */ | |
1254 | variant_part_builder *current_variant_part = nullptr; | |
1255 | /* This holds all the top-level variant parts attached to the type | |
1256 | we're reading. */ | |
1257 | std::vector<variant_part_builder> variant_parts; | |
1258 | ||
1259 | /* Return the total number of fields (including baseclasses). */ | |
1260 | int nfields () const | |
c5aa993b | 1261 | { |
2de01bdb SM |
1262 | return fields.size () + baseclasses.size (); |
1263 | } | |
1264 | }; | |
c906108c | 1265 | |
ae038cb0 DJ |
1266 | /* Loaded secondary compilation units are kept in memory until they |
1267 | have not been referenced for the processing of this many | |
1268 | compilation units. Set this to zero to disable caching. Cache | |
1269 | sizes of up to at least twenty will improve startup time for | |
1270 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1271 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1272 | static void |
b4f54984 DE |
1273 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1274 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1275 | { |
3e43a32a | 1276 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1277 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1278 | value); |
1279 | } | |
4390d890 | 1280 | \f |
c906108c SS |
1281 | /* local function prototypes */ |
1282 | ||
918dd910 JK |
1283 | static void dwarf2_find_base_address (struct die_info *die, |
1284 | struct dwarf2_cu *cu); | |
1285 | ||
891813be | 1286 | static dwarf2_psymtab *create_partial_symtab |
7aa104c4 SM |
1287 | (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
1288 | const char *name); | |
0018ea6f | 1289 | |
f1902523 JK |
1290 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1291 | const gdb_byte *info_ptr, | |
3e225074 | 1292 | struct die_info *type_unit_die); |
f1902523 | 1293 | |
976ca316 | 1294 | static void dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile); |
c906108c | 1295 | |
72bf9492 DJ |
1296 | static void scan_partial_symbols (struct partial_die_info *, |
1297 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1298 | int, struct dwarf2_cu *); |
c906108c | 1299 | |
72bf9492 DJ |
1300 | static void add_partial_symbol (struct partial_die_info *, |
1301 | struct dwarf2_cu *); | |
63d06c5c | 1302 | |
72bf9492 DJ |
1303 | static void add_partial_namespace (struct partial_die_info *pdi, |
1304 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1305 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1306 | |
5d7cb8df | 1307 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1308 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1309 | struct dwarf2_cu *cu); |
1310 | ||
72bf9492 DJ |
1311 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1312 | struct dwarf2_cu *cu); | |
91c24f0a | 1313 | |
bc30ff58 JB |
1314 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1315 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1316 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1317 | |
d521ce57 | 1318 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1319 | |
dee91e82 | 1320 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1321 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1322 | |
fb816e8b TV |
1323 | /* A pair of partial_die_info and compilation unit. */ |
1324 | struct cu_partial_die_info | |
1325 | { | |
1326 | /* The compilation unit of the partial_die_info. */ | |
1327 | struct dwarf2_cu *cu; | |
1328 | /* A partial_die_info. */ | |
1329 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1330 | |
1331 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1332 | : cu (cu), | |
1333 | pdi (pdi) | |
405feb71 | 1334 | { /* Nothing. */ } |
122cf0f2 AB |
1335 | |
1336 | private: | |
1337 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1338 | }; |
1339 | ||
122cf0f2 AB |
1340 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1341 | struct dwarf2_cu *); | |
72bf9492 | 1342 | |
d521ce57 | 1343 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
4444f407 TT |
1344 | struct attribute *, |
1345 | const struct attr_abbrev *, | |
7a5f294d | 1346 | const gdb_byte *); |
18a8505e AT |
1347 | |
1348 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 1349 | struct attribute *attr, dwarf_tag tag); |
18a8505e AT |
1350 | |
1351 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1352 | |
976ca316 SM |
1353 | static sect_offset read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
1354 | dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1355 | |
ed2dc618 | 1356 | static const char *read_indirect_string |
976ca316 | 1357 | (dwarf2_per_objfile *per_objfile, bfd *, const gdb_byte *, |
ed2dc618 | 1358 | const struct comp_unit_head *, unsigned int *); |
4bdf3d34 | 1359 | |
ed2dc618 | 1360 | static const char *read_indirect_string_at_offset |
976ca316 | 1361 | (dwarf2_per_objfile *per_objfile, LONGEST str_offset); |
927aa2e7 | 1362 | |
d521ce57 TT |
1363 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1364 | const gdb_byte *, | |
3019eac3 DE |
1365 | unsigned int *); |
1366 | ||
18a8505e AT |
1367 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1368 | ULONGEST str_index); | |
1369 | ||
1370 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1371 | ULONGEST str_index); | |
3019eac3 | 1372 | |
e142c38c | 1373 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1374 | |
e142c38c DJ |
1375 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1376 | struct dwarf2_cu *); | |
c906108c | 1377 | |
7d45c7c3 | 1378 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
dda83cd7 | 1379 | struct dwarf2_cu *cu); |
7d45c7c3 | 1380 | |
a084a2a6 AT |
1381 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1382 | ||
05cf31d1 | 1383 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
dda83cd7 | 1384 | struct dwarf2_cu *cu); |
05cf31d1 | 1385 | |
e142c38c | 1386 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1387 | |
e142c38c | 1388 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1389 | struct dwarf2_cu **); |
63d06c5c | 1390 | |
9c541725 | 1391 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1392 | struct dwarf2_cu *cu); |
debd256d | 1393 | |
f3f5162e | 1394 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1395 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1396 | CORE_ADDR, int decode_mapping); |
c906108c | 1397 | |
804d2729 TT |
1398 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1399 | const char *); | |
c906108c | 1400 | |
a14ed312 | 1401 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1402 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1403 | |
ff39bb5e | 1404 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1405 | struct dwarf2_cu *); |
c906108c | 1406 | |
ff39bb5e | 1407 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1408 | struct type *type, |
1409 | const char *name, | |
1410 | struct obstack *obstack, | |
12df843f | 1411 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1412 | const gdb_byte **bytes, |
98bfdba5 | 1413 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1414 | |
57567375 TT |
1415 | static struct type *read_subrange_index_type (struct die_info *die, |
1416 | struct dwarf2_cu *cu); | |
1417 | ||
e7c27a73 | 1418 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1419 | |
b4ba55a1 JB |
1420 | static int need_gnat_info (struct dwarf2_cu *); |
1421 | ||
3e43a32a MS |
1422 | static struct type *die_descriptive_type (struct die_info *, |
1423 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1424 | |
1425 | static void set_descriptive_type (struct type *, struct die_info *, | |
1426 | struct dwarf2_cu *); | |
1427 | ||
e7c27a73 DJ |
1428 | static struct type *die_containing_type (struct die_info *, |
1429 | struct dwarf2_cu *); | |
c906108c | 1430 | |
ff39bb5e | 1431 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1432 | struct dwarf2_cu *); |
c906108c | 1433 | |
f792889a | 1434 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1435 | |
673bfd45 DE |
1436 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1437 | ||
0d5cff50 | 1438 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1439 | |
6e70227d | 1440 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1441 | const char *suffix, int physname, |
1442 | struct dwarf2_cu *cu); | |
63d06c5c | 1443 | |
e7c27a73 | 1444 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1445 | |
348e048f DE |
1446 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1447 | ||
e7c27a73 | 1448 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1449 | |
e7c27a73 | 1450 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1451 | |
96408a79 SA |
1452 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1453 | ||
71a3c369 TT |
1454 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1455 | ||
41144253 | 1456 | /* Return the .debug_loclists section to use for cu. */ |
1457 | static struct dwarf2_section_info *cu_debug_loc_section (struct dwarf2_cu *cu); | |
1458 | ||
d0ce17d8 CT |
1459 | /* Return the .debug_rnglists section to use for cu. */ |
1460 | static struct dwarf2_section_info *cu_debug_rnglists_section | |
1461 | (struct dwarf2_cu *cu, dwarf_tag tag); | |
1462 | ||
3a2b436a | 1463 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1464 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1465 | enum pc_bounds_kind |
1466 | { | |
e385593e | 1467 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1468 | PC_BOUNDS_NOT_PRESENT, |
1469 | ||
e385593e JK |
1470 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1471 | were present but they do not form a valid range of PC addresses. */ | |
1472 | PC_BOUNDS_INVALID, | |
1473 | ||
3a2b436a JK |
1474 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1475 | PC_BOUNDS_RANGES, | |
1476 | ||
1477 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1478 | PC_BOUNDS_HIGH_LOW, | |
1479 | }; | |
1480 | ||
1481 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1482 | CORE_ADDR *, CORE_ADDR *, | |
1483 | struct dwarf2_cu *, | |
891813be | 1484 | dwarf2_psymtab *); |
c906108c | 1485 | |
fae299cd DC |
1486 | static void get_scope_pc_bounds (struct die_info *, |
1487 | CORE_ADDR *, CORE_ADDR *, | |
1488 | struct dwarf2_cu *); | |
1489 | ||
801e3a5b | 1490 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
dda83cd7 | 1491 | CORE_ADDR, struct dwarf2_cu *); |
801e3a5b | 1492 | |
a14ed312 | 1493 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1494 | struct dwarf2_cu *); |
c906108c | 1495 | |
a14ed312 | 1496 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1497 | struct type *, struct dwarf2_cu *); |
c906108c | 1498 | |
a14ed312 | 1499 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1500 | struct die_info *, struct type *, |
e7c27a73 | 1501 | struct dwarf2_cu *); |
c906108c | 1502 | |
a14ed312 | 1503 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1504 | struct type *, |
1505 | struct dwarf2_cu *); | |
c906108c | 1506 | |
134d01f1 | 1507 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1508 | |
e7c27a73 | 1509 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1510 | |
e7c27a73 | 1511 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1512 | |
5d7cb8df JK |
1513 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1514 | ||
804d2729 | 1515 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1516 | |
27aa8d6a SW |
1517 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1518 | ||
74921315 KS |
1519 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1520 | ||
f55ee35c JK |
1521 | static struct type *read_module_type (struct die_info *die, |
1522 | struct dwarf2_cu *cu); | |
1523 | ||
38d518c9 | 1524 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1525 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1526 | |
134d01f1 | 1527 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1528 | |
7d79de9a TT |
1529 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *, |
1530 | bool * = nullptr); | |
c906108c | 1531 | |
6e70227d | 1532 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1533 | struct dwarf2_cu *); |
1534 | ||
bf6af496 | 1535 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1536 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1537 | struct die_info *); |
639d11d3 | 1538 | |
dee91e82 | 1539 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1540 | const gdb_byte *info_ptr, |
1541 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1542 | struct die_info *parent); |
1543 | ||
d521ce57 TT |
1544 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1545 | struct die_info **, const gdb_byte *, | |
3e225074 | 1546 | int); |
3019eac3 | 1547 | |
d521ce57 | 1548 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1549 | struct die_info **, const gdb_byte *); |
93311388 | 1550 | |
e7c27a73 | 1551 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1552 | |
15d034d0 | 1553 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
be1e3d3e | 1554 | struct objfile *); |
71c25dea | 1555 | |
15d034d0 | 1556 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1557 | |
15d034d0 | 1558 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1559 | struct die_info *die, |
1560 | struct dwarf2_cu *cu); | |
1561 | ||
ca69b9e6 DE |
1562 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1563 | struct dwarf2_cu *cu); | |
1564 | ||
e142c38c | 1565 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1566 | struct dwarf2_cu **); |
9219021c | 1567 | |
d97bc12b DE |
1568 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1569 | ||
1570 | static void dump_die_for_error (struct die_info *); | |
1571 | ||
1572 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1573 | struct die_info *); | |
c906108c | 1574 | |
d97bc12b | 1575 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1576 | |
51545339 | 1577 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1578 | struct dwarf2_cu *); |
c906108c | 1579 | |
348e048f | 1580 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1581 | const struct attribute *, |
348e048f DE |
1582 | struct dwarf2_cu **); |
1583 | ||
10b3939b | 1584 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1585 | const struct attribute *, |
f2f0e013 | 1586 | struct dwarf2_cu **); |
c906108c | 1587 | |
348e048f | 1588 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1589 | const struct attribute *, |
348e048f DE |
1590 | struct dwarf2_cu **); |
1591 | ||
ac9ec31b DE |
1592 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1593 | struct dwarf2_cu *); | |
1594 | ||
1595 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1596 | const struct attribute *, |
ac9ec31b DE |
1597 | struct dwarf2_cu *); |
1598 | ||
ab432490 SM |
1599 | static void load_full_type_unit (dwarf2_per_cu_data *per_cu, |
1600 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1601 | |
ab432490 SM |
1602 | static void read_signatured_type (signatured_type *sig_type, |
1603 | dwarf2_per_objfile *per_objfile); | |
348e048f | 1604 | |
63e43d3a PMR |
1605 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1606 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1607 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1608 | |
c906108c SS |
1609 | /* memory allocation interface */ |
1610 | ||
7b5a2f43 | 1611 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1612 | |
b60c80d6 | 1613 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1614 | |
43f3e411 | 1615 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1616 | |
8cf6f0b1 TT |
1617 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1618 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1619 | const struct attribute *attr); |
8cf6f0b1 | 1620 | |
ff39bb5e | 1621 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1622 | struct symbol *sym, |
f1e6e072 TT |
1623 | struct dwarf2_cu *cu, |
1624 | int is_block); | |
4c2df51b | 1625 | |
d521ce57 TT |
1626 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1627 | const gdb_byte *info_ptr, | |
7c32eebb | 1628 | const struct abbrev_info *abbrev); |
4bb7a0a7 | 1629 | |
72bf9492 DJ |
1630 | static hashval_t partial_die_hash (const void *item); |
1631 | ||
1632 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1633 | ||
ae038cb0 | 1634 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 | 1635 | (sect_offset sect_off, unsigned int offset_in_dwz, |
976ca316 | 1636 | dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1637 | |
9816fde3 | 1638 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1639 | struct die_info *comp_unit_die, |
1640 | enum language pretend_language); | |
93311388 | 1641 | |
f792889a | 1642 | static struct type *set_die_type (struct die_info *, struct type *, |
57567375 | 1643 | struct dwarf2_cu *, bool = false); |
1c379e20 | 1644 | |
976ca316 | 1645 | static void create_all_comp_units (dwarf2_per_objfile *per_objfile); |
ae038cb0 | 1646 | |
976ca316 | 1647 | static int create_all_type_units (dwarf2_per_objfile *per_objfile); |
1fd400ff | 1648 | |
ab432490 SM |
1649 | static void load_full_comp_unit (dwarf2_per_cu_data *per_cu, |
1650 | dwarf2_per_objfile *per_objfile, | |
4a636814 | 1651 | dwarf2_cu *existing_cu, |
ab432490 SM |
1652 | bool skip_partial, |
1653 | enum language pretend_language); | |
10b3939b | 1654 | |
8fc0b21d | 1655 | static void process_full_comp_unit (dwarf2_cu *cu, |
47b14e86 | 1656 | enum language pretend_language); |
10b3939b | 1657 | |
8fc0b21d | 1658 | static void process_full_type_unit (dwarf2_cu *cu, |
47b14e86 | 1659 | enum language pretend_language); |
f4dc4d17 | 1660 | |
10b3939b DJ |
1661 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1662 | struct dwarf2_per_cu_data *); | |
1663 | ||
ae038cb0 DJ |
1664 | static void dwarf2_mark (struct dwarf2_cu *); |
1665 | ||
b64f50a1 | 1666 | static struct type *get_die_type_at_offset (sect_offset, |
aa66c379 SM |
1667 | dwarf2_per_cu_data *per_cu, |
1668 | dwarf2_per_objfile *per_objfile); | |
673bfd45 | 1669 | |
f792889a | 1670 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1671 | |
120ce1b5 SM |
1672 | static void queue_comp_unit (dwarf2_per_cu_data *per_cu, |
1673 | dwarf2_per_objfile *per_objfile, | |
95554aad TT |
1674 | enum language pretend_language); |
1675 | ||
976ca316 | 1676 | static void process_queue (dwarf2_per_objfile *per_objfile); |
9291a0cd | 1677 | |
b303c6f6 AB |
1678 | /* Class, the destructor of which frees all allocated queue entries. This |
1679 | will only have work to do if an error was thrown while processing the | |
1680 | dwarf. If no error was thrown then the queue entries should have all | |
1681 | been processed, and freed, as we went along. */ | |
1682 | ||
1683 | class dwarf2_queue_guard | |
1684 | { | |
1685 | public: | |
39856def TT |
1686 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1687 | : m_per_objfile (per_objfile) | |
1688 | { | |
08ac5771 SM |
1689 | gdb_assert (!m_per_objfile->per_bfd->queue.has_value ()); |
1690 | ||
1691 | m_per_objfile->per_bfd->queue.emplace (); | |
39856def | 1692 | } |
b303c6f6 AB |
1693 | |
1694 | /* Free any entries remaining on the queue. There should only be | |
1695 | entries left if we hit an error while processing the dwarf. */ | |
1696 | ~dwarf2_queue_guard () | |
1697 | { | |
08ac5771 SM |
1698 | gdb_assert (m_per_objfile->per_bfd->queue.has_value ()); |
1699 | ||
1700 | m_per_objfile->per_bfd->queue.reset (); | |
39856def | 1701 | } |
b303c6f6 | 1702 | |
39856def | 1703 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1704 | |
39856def TT |
1705 | private: |
1706 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1707 | }; |
1708 | ||
39856def TT |
1709 | dwarf2_queue_item::~dwarf2_queue_item () |
1710 | { | |
1711 | /* Anything still marked queued is likely to be in an | |
1712 | inconsistent state, so discard it. */ | |
1713 | if (per_cu->queued) | |
1714 | { | |
7188ed02 | 1715 | per_objfile->remove_cu (per_cu); |
39856def TT |
1716 | per_cu->queued = 0; |
1717 | } | |
1718 | } | |
1719 | ||
d721ba37 PA |
1720 | /* The return type of find_file_and_directory. Note, the enclosed |
1721 | string pointers are only valid while this object is valid. */ | |
1722 | ||
1723 | struct file_and_directory | |
1724 | { | |
1725 | /* The filename. This is never NULL. */ | |
1726 | const char *name; | |
1727 | ||
1728 | /* The compilation directory. NULL if not known. If we needed to | |
1729 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1730 | points directly to the DW_AT_comp_dir string attribute owned by | |
1731 | the obstack that owns the DIE. */ | |
1732 | const char *comp_dir; | |
1733 | ||
1734 | /* If we needed to build a new string for comp_dir, this is what | |
1735 | owns the storage. */ | |
1736 | std::string comp_dir_storage; | |
1737 | }; | |
1738 | ||
1739 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1740 | struct dwarf2_cu *cu); | |
9291a0cd | 1741 | |
298e9637 | 1742 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1743 | |
298e9637 | 1744 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1745 | |
57d63ce2 | 1746 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
976ca316 SM |
1747 | (dwarf2_per_objfile *per_objfile, struct dwp_file *dwp_file, |
1748 | const char *comp_dir, ULONGEST signature, int is_debug_types); | |
a2ce51a0 | 1749 | |
976ca316 | 1750 | static struct dwp_file *get_dwp_file (dwarf2_per_objfile *per_objfile); |
a2ce51a0 | 1751 | |
3019eac3 | 1752 | static struct dwo_unit *lookup_dwo_comp_unit |
4ab09049 SM |
1753 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
1754 | ULONGEST signature); | |
3019eac3 DE |
1755 | |
1756 | static struct dwo_unit *lookup_dwo_type_unit | |
4ab09049 | 1757 | (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir); |
3019eac3 | 1758 | |
1b555f17 | 1759 | static void queue_and_load_all_dwo_tus (dwarf2_cu *cu); |
89e63ee4 | 1760 | |
263db9a1 TT |
1761 | /* A unique pointer to a dwo_file. */ |
1762 | ||
51ac9db5 | 1763 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1764 | |
976ca316 | 1765 | static void process_cu_includes (dwarf2_per_objfile *per_objfile); |
95554aad | 1766 | |
1b80a9fa | 1767 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1768 | |
1769 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1770 | \f |
1771 | /* Various complaints about symbol reading that don't abort the process. */ | |
1772 | ||
4390d890 DE |
1773 | static void |
1774 | dwarf2_debug_line_missing_file_complaint (void) | |
1775 | { | |
b98664d3 | 1776 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1777 | } |
1778 | ||
1779 | static void | |
1780 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1781 | { | |
b98664d3 | 1782 | complaint (_(".debug_line section has line " |
4390d890 DE |
1783 | "program sequence without an end")); |
1784 | } | |
1785 | ||
1786 | static void | |
1787 | dwarf2_complex_location_expr_complaint (void) | |
1788 | { | |
b98664d3 | 1789 | complaint (_("location expression too complex")); |
4390d890 DE |
1790 | } |
1791 | ||
1792 | static void | |
1793 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1794 | int arg3) | |
1795 | { | |
b98664d3 | 1796 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1797 | arg1, arg2, arg3); |
1798 | } | |
1799 | ||
4390d890 DE |
1800 | static void |
1801 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1802 | { | |
b98664d3 | 1803 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1804 | arg1, arg2); |
1805 | } | |
527f3840 JK |
1806 | |
1807 | /* Hash function for line_header_hash. */ | |
1808 | ||
1809 | static hashval_t | |
1810 | line_header_hash (const struct line_header *ofs) | |
1811 | { | |
9c541725 | 1812 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1813 | } |
1814 | ||
1815 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1816 | ||
1817 | static hashval_t | |
1818 | line_header_hash_voidp (const void *item) | |
1819 | { | |
9a3c8263 | 1820 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1821 | |
1822 | return line_header_hash (ofs); | |
1823 | } | |
1824 | ||
1825 | /* Equality function for line_header_hash. */ | |
1826 | ||
1827 | static int | |
1828 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1829 | { | |
9a3c8263 SM |
1830 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1831 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1832 | |
9c541725 | 1833 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1834 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1835 | } | |
1836 | ||
4390d890 | 1837 | \f |
9291a0cd | 1838 | |
330cdd98 PA |
1839 | /* See declaration. */ |
1840 | ||
5989a64e SM |
1841 | dwarf2_per_bfd::dwarf2_per_bfd (bfd *obfd, const dwarf2_debug_sections *names, |
1842 | bool can_copy_) | |
c3699833 SM |
1843 | : obfd (obfd), |
1844 | can_copy (can_copy_) | |
330cdd98 PA |
1845 | { |
1846 | if (names == NULL) | |
1847 | names = &dwarf2_elf_names; | |
1848 | ||
330cdd98 PA |
1849 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) |
1850 | locate_sections (obfd, sec, *names); | |
1851 | } | |
1852 | ||
5989a64e | 1853 | dwarf2_per_bfd::~dwarf2_per_bfd () |
330cdd98 | 1854 | { |
b76e467d | 1855 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 1856 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1857 | |
b2bdb8cf | 1858 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 1859 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 1860 | |
5989a64e | 1861 | /* Everything else should be on this->obstack. */ |
330cdd98 PA |
1862 | } |
1863 | ||
7188ed02 | 1864 | /* See read.h. */ |
330cdd98 PA |
1865 | |
1866 | void | |
7188ed02 | 1867 | dwarf2_per_objfile::remove_all_cus () |
330cdd98 | 1868 | { |
08ac5771 SM |
1869 | gdb_assert (!this->per_bfd->queue.has_value ()); |
1870 | ||
7188ed02 SM |
1871 | for (auto pair : m_dwarf2_cus) |
1872 | delete pair.second; | |
330cdd98 | 1873 | |
7188ed02 | 1874 | m_dwarf2_cus.clear (); |
330cdd98 PA |
1875 | } |
1876 | ||
11ed8cad TT |
1877 | /* A helper class that calls free_cached_comp_units on |
1878 | destruction. */ | |
1879 | ||
1880 | class free_cached_comp_units | |
1881 | { | |
1882 | public: | |
1883 | ||
1884 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1885 | : m_per_objfile (per_objfile) | |
1886 | { | |
1887 | } | |
1888 | ||
1889 | ~free_cached_comp_units () | |
1890 | { | |
7188ed02 | 1891 | m_per_objfile->remove_all_cus (); |
11ed8cad TT |
1892 | } |
1893 | ||
1894 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1895 | ||
1896 | private: | |
1897 | ||
1898 | dwarf2_per_objfile *m_per_objfile; | |
1899 | }; | |
1900 | ||
af758d11 SM |
1901 | /* See read.h. */ |
1902 | ||
1903 | bool | |
1904 | dwarf2_per_objfile::symtab_set_p (const dwarf2_per_cu_data *per_cu) const | |
1905 | { | |
1906 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1907 | ||
1908 | return this->m_symtabs[per_cu->index] != nullptr; | |
1909 | } | |
1910 | ||
1911 | /* See read.h. */ | |
1912 | ||
1913 | compunit_symtab * | |
1914 | dwarf2_per_objfile::get_symtab (const dwarf2_per_cu_data *per_cu) const | |
1915 | { | |
1916 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1917 | ||
1918 | return this->m_symtabs[per_cu->index]; | |
1919 | } | |
1920 | ||
1921 | /* See read.h. */ | |
1922 | ||
1923 | void | |
1924 | dwarf2_per_objfile::set_symtab (const dwarf2_per_cu_data *per_cu, | |
1925 | compunit_symtab *symtab) | |
1926 | { | |
1927 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1928 | gdb_assert (this->m_symtabs[per_cu->index] == nullptr); | |
1929 | ||
1930 | this->m_symtabs[per_cu->index] = symtab; | |
1931 | } | |
1932 | ||
c906108c | 1933 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1934 | information and return true if we have enough to do something. |
1935 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1936 | ELF names are used. CAN_COPY is true for formats where symbol |
1937 | interposition is possible and so symbol values must follow copy | |
1938 | relocation rules. */ | |
c906108c SS |
1939 | |
1940 | int | |
251d32d9 | 1941 | dwarf2_has_info (struct objfile *objfile, |
dda83cd7 | 1942 | const struct dwarf2_debug_sections *names, |
4b610737 | 1943 | bool can_copy) |
c906108c | 1944 | { |
97cbe998 SDJ |
1945 | if (objfile->flags & OBJF_READNEVER) |
1946 | return 0; | |
1947 | ||
976ca316 | 1948 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 1949 | |
976ca316 | 1950 | if (per_objfile == NULL) |
5989a64e | 1951 | { |
17ee85fc TT |
1952 | dwarf2_per_bfd *per_bfd; |
1953 | ||
1954 | /* We can share a "dwarf2_per_bfd" with other objfiles if the BFD | |
eb36a3eb TT |
1955 | doesn't require relocations. */ |
1956 | if (!gdb_bfd_requires_relocations (objfile->obfd)) | |
17ee85fc TT |
1957 | { |
1958 | /* See if one has been created for this BFD yet. */ | |
1959 | per_bfd = dwarf2_per_bfd_bfd_data_key.get (objfile->obfd); | |
1960 | ||
1961 | if (per_bfd == nullptr) | |
1962 | { | |
1963 | /* No, create it now. */ | |
1964 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
1965 | dwarf2_per_bfd_bfd_data_key.set (objfile->obfd, per_bfd); | |
1966 | } | |
1967 | } | |
1968 | else | |
1969 | { | |
1970 | /* No sharing possible, create one specifically for this objfile. */ | |
1971 | per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
1972 | dwarf2_per_bfd_objfile_data_key.set (objfile, per_bfd); | |
1973 | } | |
5989a64e | 1974 | |
976ca316 | 1975 | per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, per_bfd); |
5989a64e | 1976 | } |
5bfd760d | 1977 | |
976ca316 SM |
1978 | return (!per_objfile->per_bfd->info.is_virtual |
1979 | && per_objfile->per_bfd->info.s.section != NULL | |
1980 | && !per_objfile->per_bfd->abbrev.is_virtual | |
1981 | && per_objfile->per_bfd->abbrev.s.section != NULL); | |
73869dc2 DE |
1982 | } |
1983 | ||
330cdd98 | 1984 | /* See declaration. */ |
c906108c | 1985 | |
330cdd98 | 1986 | void |
5989a64e SM |
1987 | dwarf2_per_bfd::locate_sections (bfd *abfd, asection *sectp, |
1988 | const dwarf2_debug_sections &names) | |
c906108c | 1989 | { |
fd361982 | 1990 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 1991 | |
dc7650b8 JK |
1992 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1993 | { | |
1994 | } | |
950b7495 KS |
1995 | else if (elf_section_data (sectp)->this_hdr.sh_size |
1996 | > bfd_get_file_size (abfd)) | |
1997 | { | |
1998 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
1999 | warning (_("Discarding section %s which has a section size (%s" | |
2000 | ") larger than the file size [in module %s]"), | |
2001 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
2002 | bfd_get_filename (abfd)); | |
2003 | } | |
fbedd546 | 2004 | else if (names.info.matches (sectp->name)) |
c906108c | 2005 | { |
330cdd98 | 2006 | this->info.s.section = sectp; |
fd361982 | 2007 | this->info.size = bfd_section_size (sectp); |
c906108c | 2008 | } |
fbedd546 | 2009 | else if (names.abbrev.matches (sectp->name)) |
c906108c | 2010 | { |
330cdd98 | 2011 | this->abbrev.s.section = sectp; |
fd361982 | 2012 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 2013 | } |
fbedd546 | 2014 | else if (names.line.matches (sectp->name)) |
c906108c | 2015 | { |
330cdd98 | 2016 | this->line.s.section = sectp; |
fd361982 | 2017 | this->line.size = bfd_section_size (sectp); |
c906108c | 2018 | } |
fbedd546 | 2019 | else if (names.loc.matches (sectp->name)) |
c906108c | 2020 | { |
330cdd98 | 2021 | this->loc.s.section = sectp; |
fd361982 | 2022 | this->loc.size = bfd_section_size (sectp); |
c906108c | 2023 | } |
fbedd546 | 2024 | else if (names.loclists.matches (sectp->name)) |
43988095 | 2025 | { |
330cdd98 | 2026 | this->loclists.s.section = sectp; |
fd361982 | 2027 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 2028 | } |
fbedd546 | 2029 | else if (names.macinfo.matches (sectp->name)) |
c906108c | 2030 | { |
330cdd98 | 2031 | this->macinfo.s.section = sectp; |
fd361982 | 2032 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 2033 | } |
fbedd546 | 2034 | else if (names.macro.matches (sectp->name)) |
cf2c3c16 | 2035 | { |
330cdd98 | 2036 | this->macro.s.section = sectp; |
fd361982 | 2037 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 2038 | } |
fbedd546 | 2039 | else if (names.str.matches (sectp->name)) |
c906108c | 2040 | { |
330cdd98 | 2041 | this->str.s.section = sectp; |
fd361982 | 2042 | this->str.size = bfd_section_size (sectp); |
c906108c | 2043 | } |
fbedd546 | 2044 | else if (names.str_offsets.matches (sectp->name)) |
18a8505e AT |
2045 | { |
2046 | this->str_offsets.s.section = sectp; | |
2047 | this->str_offsets.size = bfd_section_size (sectp); | |
2048 | } | |
fbedd546 | 2049 | else if (names.line_str.matches (sectp->name)) |
43988095 | 2050 | { |
330cdd98 | 2051 | this->line_str.s.section = sectp; |
fd361982 | 2052 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 2053 | } |
fbedd546 | 2054 | else if (names.addr.matches (sectp->name)) |
3019eac3 | 2055 | { |
330cdd98 | 2056 | this->addr.s.section = sectp; |
fd361982 | 2057 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 2058 | } |
fbedd546 | 2059 | else if (names.frame.matches (sectp->name)) |
b6af0555 | 2060 | { |
330cdd98 | 2061 | this->frame.s.section = sectp; |
fd361982 | 2062 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 2063 | } |
fbedd546 | 2064 | else if (names.eh_frame.matches (sectp->name)) |
b6af0555 | 2065 | { |
330cdd98 | 2066 | this->eh_frame.s.section = sectp; |
fd361982 | 2067 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 2068 | } |
fbedd546 | 2069 | else if (names.ranges.matches (sectp->name)) |
af34e669 | 2070 | { |
330cdd98 | 2071 | this->ranges.s.section = sectp; |
fd361982 | 2072 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 2073 | } |
fbedd546 | 2074 | else if (names.rnglists.matches (sectp->name)) |
43988095 | 2075 | { |
330cdd98 | 2076 | this->rnglists.s.section = sectp; |
fd361982 | 2077 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 2078 | } |
fbedd546 | 2079 | else if (names.types.matches (sectp->name)) |
348e048f | 2080 | { |
8b70b953 TT |
2081 | struct dwarf2_section_info type_section; |
2082 | ||
2083 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2084 | type_section.s.section = sectp; |
fd361982 | 2085 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2086 | |
fd5866f6 | 2087 | this->types.push_back (type_section); |
348e048f | 2088 | } |
fbedd546 | 2089 | else if (names.gdb_index.matches (sectp->name)) |
9291a0cd | 2090 | { |
330cdd98 | 2091 | this->gdb_index.s.section = sectp; |
fd361982 | 2092 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2093 | } |
fbedd546 | 2094 | else if (names.debug_names.matches (sectp->name)) |
927aa2e7 JK |
2095 | { |
2096 | this->debug_names.s.section = sectp; | |
fd361982 | 2097 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2098 | } |
fbedd546 | 2099 | else if (names.debug_aranges.matches (sectp->name)) |
927aa2e7 JK |
2100 | { |
2101 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2102 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2103 | } |
dce234bc | 2104 | |
fd361982 AM |
2105 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2106 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2107 | this->has_section_at_zero = true; |
c906108c SS |
2108 | } |
2109 | ||
dce234bc | 2110 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2111 | SECTION_NAME. */ |
af34e669 | 2112 | |
dce234bc | 2113 | void |
3017a003 | 2114 | dwarf2_get_section_info (struct objfile *objfile, |
dda83cd7 SM |
2115 | enum dwarf2_section_enum sect, |
2116 | asection **sectp, const gdb_byte **bufp, | |
2117 | bfd_size_type *sizep) | |
dce234bc | 2118 | { |
976ca316 | 2119 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
dce234bc | 2120 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2121 | |
2122 | /* We may see an objfile without any DWARF, in which case we just | |
2123 | return nothing. */ | |
976ca316 | 2124 | if (per_objfile == NULL) |
a3b2a86b TT |
2125 | { |
2126 | *sectp = NULL; | |
2127 | *bufp = NULL; | |
2128 | *sizep = 0; | |
2129 | return; | |
2130 | } | |
3017a003 TG |
2131 | switch (sect) |
2132 | { | |
2133 | case DWARF2_DEBUG_FRAME: | |
976ca316 | 2134 | info = &per_objfile->per_bfd->frame; |
3017a003 TG |
2135 | break; |
2136 | case DWARF2_EH_FRAME: | |
976ca316 | 2137 | info = &per_objfile->per_bfd->eh_frame; |
3017a003 TG |
2138 | break; |
2139 | default: | |
2140 | gdb_assert_not_reached ("unexpected section"); | |
2141 | } | |
dce234bc | 2142 | |
96b79293 | 2143 | info->read (objfile); |
dce234bc | 2144 | |
96b79293 | 2145 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2146 | *bufp = info->buffer; |
2147 | *sizep = info->size; | |
2148 | } | |
2149 | ||
9291a0cd | 2150 | \f |
39298a5d | 2151 | /* DWARF quick_symbol_functions support. */ |
7b9f3c50 DE |
2152 | |
2153 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2154 | unique line tables, so we maintain a separate table of all .debug_line | |
2155 | derived entries to support the sharing. | |
2156 | All the quick functions need is the list of file names. We discard the | |
2157 | line_header when we're done and don't need to record it here. */ | |
2158 | struct quick_file_names | |
2159 | { | |
094b34ac DE |
2160 | /* The data used to construct the hash key. */ |
2161 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2162 | |
2163 | /* The number of entries in file_names, real_names. */ | |
2164 | unsigned int num_file_names; | |
2165 | ||
2166 | /* The file names from the line table, after being run through | |
2167 | file_full_name. */ | |
2168 | const char **file_names; | |
2169 | ||
2170 | /* The file names from the line table after being run through | |
2171 | gdb_realpath. These are computed lazily. */ | |
2172 | const char **real_names; | |
2173 | }; | |
2174 | ||
2175 | /* When using the index (and thus not using psymtabs), each CU has an | |
2176 | object of this type. This is used to hold information needed by | |
2177 | the various "quick" methods. */ | |
2178 | struct dwarf2_per_cu_quick_data | |
2179 | { | |
2180 | /* The file table. This can be NULL if there was no file table | |
2181 | or it's currently not read in. | |
5989a64e | 2182 | NOTE: This points into dwarf2_per_objfile->per_bfd->quick_file_names_table. */ |
7b9f3c50 DE |
2183 | struct quick_file_names *file_names; |
2184 | ||
7b9f3c50 DE |
2185 | /* A temporary mark bit used when iterating over all CUs in |
2186 | expand_symtabs_matching. */ | |
2187 | unsigned int mark : 1; | |
2188 | ||
2189 | /* True if we've tried to read the file table and found there isn't one. | |
2190 | There will be no point in trying to read it again next time. */ | |
2191 | unsigned int no_file_data : 1; | |
2192 | }; | |
2193 | ||
edc02ceb TT |
2194 | /* A subclass of psymbol_functions that arranges to read the DWARF |
2195 | partial symbols when needed. */ | |
2196 | struct lazy_dwarf_reader : public psymbol_functions | |
2197 | { | |
2198 | using psymbol_functions::psymbol_functions; | |
2199 | ||
2200 | bool can_lazily_read_symbols () override | |
2201 | { | |
2202 | return true; | |
2203 | } | |
2204 | ||
2205 | void read_partial_symbols (struct objfile *objfile) override | |
2206 | { | |
2207 | if (dwarf2_has_info (objfile, nullptr)) | |
2208 | dwarf2_build_psymtabs (objfile, this); | |
2209 | } | |
2210 | }; | |
2211 | ||
2212 | static quick_symbol_functions_up | |
2213 | make_lazy_dwarf_reader () | |
2214 | { | |
2215 | return quick_symbol_functions_up (new lazy_dwarf_reader); | |
2216 | } | |
2217 | ||
39298a5d TT |
2218 | struct dwarf2_base_index_functions : public quick_symbol_functions |
2219 | { | |
2220 | bool has_symbols (struct objfile *objfile) override; | |
2221 | ||
2222 | struct symtab *find_last_source_symtab (struct objfile *objfile) override; | |
2223 | ||
2224 | void forget_cached_source_info (struct objfile *objfile) override; | |
2225 | ||
2226 | bool map_symtabs_matching_filename | |
2227 | (struct objfile *objfile, const char *name, const char *real_path, | |
2228 | gdb::function_view<bool (symtab *)> callback) override; | |
2229 | ||
2230 | enum language lookup_global_symbol_language (struct objfile *objfile, | |
2231 | const char *name, | |
2232 | domain_enum domain, | |
2233 | bool *symbol_found_p) override | |
2234 | { | |
2235 | *symbol_found_p = false; | |
2236 | return language_unknown; | |
2237 | } | |
2238 | ||
4829711b | 2239 | void print_stats (struct objfile *objfile, bool print_bcache) override; |
39298a5d TT |
2240 | |
2241 | void expand_all_symtabs (struct objfile *objfile) override; | |
2242 | ||
2243 | void expand_symtabs_with_fullname (struct objfile *objfile, | |
2244 | const char *fullname) override; | |
2245 | ||
2246 | struct compunit_symtab *find_pc_sect_compunit_symtab | |
2247 | (struct objfile *objfile, struct bound_minimal_symbol msymbol, | |
2248 | CORE_ADDR pc, struct obj_section *section, int warn_if_readin) override; | |
2249 | ||
2250 | struct compunit_symtab *find_compunit_symtab_by_address | |
2251 | (struct objfile *objfile, CORE_ADDR address) override | |
2252 | { | |
2253 | return nullptr; | |
2254 | } | |
2255 | ||
2256 | void map_symbol_filenames (struct objfile *objfile, | |
f4655dee TT |
2257 | gdb::function_view<symbol_filename_ftype> fun, |
2258 | bool need_fullname) override; | |
39298a5d TT |
2259 | }; |
2260 | ||
2261 | struct dwarf2_gdb_index : public dwarf2_base_index_functions | |
2262 | { | |
2263 | struct compunit_symtab *lookup_symbol (struct objfile *objfile, | |
2264 | block_enum block_index, | |
2265 | const char *name, | |
2266 | domain_enum domain) override; | |
2267 | ||
2268 | void dump (struct objfile *objfile) override; | |
2269 | ||
2270 | void expand_symtabs_for_function (struct objfile *objfile, | |
2271 | const char *func_name) override; | |
2272 | ||
2273 | void map_matching_symbols | |
2274 | (struct objfile *, | |
2275 | const lookup_name_info &lookup_name, | |
2276 | domain_enum domain, | |
2277 | int global, | |
2278 | gdb::function_view<symbol_found_callback_ftype> callback, | |
2279 | symbol_compare_ftype *ordered_compare) override; | |
2280 | ||
2281 | void expand_symtabs_matching | |
2282 | (struct objfile *objfile, | |
2283 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
2284 | const lookup_name_info *lookup_name, | |
2285 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
2286 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
2287 | enum search_domain kind) override; | |
2288 | }; | |
2289 | ||
2290 | struct dwarf2_debug_names_index : public dwarf2_base_index_functions | |
2291 | { | |
2292 | struct compunit_symtab *lookup_symbol (struct objfile *objfile, | |
2293 | block_enum block_index, | |
2294 | const char *name, | |
2295 | domain_enum domain) override; | |
2296 | ||
2297 | void dump (struct objfile *objfile) override; | |
2298 | ||
2299 | void expand_symtabs_for_function (struct objfile *objfile, | |
2300 | const char *func_name) override; | |
2301 | ||
2302 | void map_matching_symbols | |
2303 | (struct objfile *, | |
2304 | const lookup_name_info &lookup_name, | |
2305 | domain_enum domain, | |
2306 | int global, | |
2307 | gdb::function_view<symbol_found_callback_ftype> callback, | |
2308 | symbol_compare_ftype *ordered_compare) override; | |
2309 | ||
2310 | void expand_symtabs_matching | |
2311 | (struct objfile *objfile, | |
2312 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
2313 | const lookup_name_info *lookup_name, | |
2314 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
2315 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
2316 | enum search_domain kind) override; | |
2317 | }; | |
2318 | ||
edc02ceb | 2319 | static quick_symbol_functions_up |
39298a5d TT |
2320 | make_dwarf_gdb_index () |
2321 | { | |
2322 | return quick_symbol_functions_up (new dwarf2_gdb_index); | |
2323 | } | |
2324 | ||
edc02ceb | 2325 | static quick_symbol_functions_up |
39298a5d TT |
2326 | make_dwarf_debug_names () |
2327 | { | |
2328 | return quick_symbol_functions_up (new dwarf2_debug_names_index); | |
2329 | } | |
2330 | ||
094b34ac DE |
2331 | /* Utility hash function for a stmt_list_hash. */ |
2332 | ||
2333 | static hashval_t | |
2334 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2335 | { | |
2336 | hashval_t v = 0; | |
2337 | ||
2338 | if (stmt_list_hash->dwo_unit != NULL) | |
2339 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2340 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2341 | return v; |
2342 | } | |
2343 | ||
2344 | /* Utility equality function for a stmt_list_hash. */ | |
2345 | ||
2346 | static int | |
2347 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2348 | const struct stmt_list_hash *rhs) | |
2349 | { | |
2350 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2351 | return 0; | |
2352 | if (lhs->dwo_unit != NULL | |
2353 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2354 | return 0; | |
2355 | ||
9c541725 | 2356 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2357 | } |
2358 | ||
7b9f3c50 DE |
2359 | /* Hash function for a quick_file_names. */ |
2360 | ||
2361 | static hashval_t | |
2362 | hash_file_name_entry (const void *e) | |
2363 | { | |
9a3c8263 SM |
2364 | const struct quick_file_names *file_data |
2365 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2366 | |
094b34ac | 2367 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2368 | } |
2369 | ||
2370 | /* Equality function for a quick_file_names. */ | |
2371 | ||
2372 | static int | |
2373 | eq_file_name_entry (const void *a, const void *b) | |
2374 | { | |
9a3c8263 SM |
2375 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2376 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2377 | |
094b34ac | 2378 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2379 | } |
2380 | ||
2381 | /* Delete function for a quick_file_names. */ | |
2382 | ||
2383 | static void | |
2384 | delete_file_name_entry (void *e) | |
2385 | { | |
9a3c8263 | 2386 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2387 | int i; |
2388 | ||
2389 | for (i = 0; i < file_data->num_file_names; ++i) | |
2390 | { | |
2391 | xfree ((void*) file_data->file_names[i]); | |
2392 | if (file_data->real_names) | |
2393 | xfree ((void*) file_data->real_names[i]); | |
2394 | } | |
2395 | ||
45940949 TT |
2396 | /* The space for the struct itself lives on the obstack, so we don't |
2397 | free it here. */ | |
7b9f3c50 DE |
2398 | } |
2399 | ||
2400 | /* Create a quick_file_names hash table. */ | |
2401 | ||
5895093f | 2402 | static htab_up |
7b9f3c50 DE |
2403 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2404 | { | |
5895093f TT |
2405 | return htab_up (htab_create_alloc (nr_initial_entries, |
2406 | hash_file_name_entry, eq_file_name_entry, | |
2407 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2408 | } |
9291a0cd | 2409 | |
ab432490 SM |
2410 | /* Read in CU (dwarf2_cu object) for PER_CU in the context of PER_OBJFILE. This |
2411 | function is unrelated to symtabs, symtab would have to be created afterwards. | |
2412 | You should call age_cached_comp_units after processing the CU. */ | |
918dd910 | 2413 | |
1b555f17 | 2414 | static dwarf2_cu * |
ab432490 SM |
2415 | load_cu (dwarf2_per_cu_data *per_cu, dwarf2_per_objfile *per_objfile, |
2416 | bool skip_partial) | |
918dd910 | 2417 | { |
3019eac3 | 2418 | if (per_cu->is_debug_types) |
ab432490 | 2419 | load_full_type_unit (per_cu, per_objfile); |
918dd910 | 2420 | else |
4a636814 SM |
2421 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
2422 | skip_partial, language_minimal); | |
918dd910 | 2423 | |
7188ed02 SM |
2424 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
2425 | if (cu == nullptr) | |
1b555f17 | 2426 | return nullptr; /* Dummy CU. */ |
2dc860c0 | 2427 | |
7188ed02 | 2428 | dwarf2_find_base_address (cu->dies, cu); |
1b555f17 | 2429 | |
7188ed02 | 2430 | return cu; |
918dd910 JK |
2431 | } |
2432 | ||
1350c3b4 | 2433 | /* Read in the symbols for PER_CU in the context of PER_OBJFILE. */ |
2fdf6df6 | 2434 | |
9291a0cd | 2435 | static void |
97a1449a | 2436 | dw2_do_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2437 | dwarf2_per_objfile *per_objfile, bool skip_partial) |
9291a0cd | 2438 | { |
f4dc4d17 DE |
2439 | /* Skip type_unit_groups, reading the type units they contain |
2440 | is handled elsewhere. */ | |
197400e8 | 2441 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2442 | return; |
2443 | ||
08ac5771 SM |
2444 | { |
2445 | /* The destructor of dwarf2_queue_guard frees any entries left on | |
2446 | the queue. After this point we're guaranteed to leave this function | |
2447 | with the dwarf queue empty. */ | |
2448 | dwarf2_queue_guard q_guard (per_objfile); | |
89e63ee4 | 2449 | |
08ac5771 SM |
2450 | if (!per_objfile->symtab_set_p (per_cu)) |
2451 | { | |
2452 | queue_comp_unit (per_cu, per_objfile, language_minimal); | |
2453 | dwarf2_cu *cu = load_cu (per_cu, per_objfile, skip_partial); | |
2454 | ||
2455 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2456 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2457 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2458 | if (!per_cu->is_debug_types | |
2459 | && cu != NULL | |
2460 | && cu->dwo_unit != NULL | |
2461 | && per_objfile->per_bfd->index_table != NULL | |
2462 | && per_objfile->per_bfd->index_table->version <= 7 | |
2463 | /* DWP files aren't supported yet. */ | |
2464 | && get_dwp_file (per_objfile) == NULL) | |
2465 | queue_and_load_all_dwo_tus (cu); | |
2466 | } | |
9291a0cd | 2467 | |
08ac5771 SM |
2468 | process_queue (per_objfile); |
2469 | } | |
9291a0cd TT |
2470 | |
2471 | /* Age the cache, releasing compilation units that have not | |
2472 | been used recently. */ | |
976ca316 | 2473 | per_objfile->age_comp_units (); |
9291a0cd TT |
2474 | } |
2475 | ||
97a1449a SM |
2476 | /* Ensure that the symbols for PER_CU have been read in. DWARF2_PER_OBJFILE is |
2477 | the per-objfile for which this symtab is instantiated. | |
2478 | ||
2479 | Returns the resulting symbol table. */ | |
2fdf6df6 | 2480 | |
43f3e411 | 2481 | static struct compunit_symtab * |
97a1449a | 2482 | dw2_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
976ca316 | 2483 | dwarf2_per_objfile *per_objfile, |
97a1449a | 2484 | bool skip_partial) |
9291a0cd | 2485 | { |
976ca316 | 2486 | gdb_assert (per_objfile->per_bfd->using_index); |
af758d11 | 2487 | |
976ca316 | 2488 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd | 2489 | { |
976ca316 | 2490 | free_cached_comp_units freer (per_objfile); |
c83dd867 | 2491 | scoped_restore decrementer = increment_reading_symtab (); |
976ca316 SM |
2492 | dw2_do_instantiate_symtab (per_cu, per_objfile, skip_partial); |
2493 | process_cu_includes (per_objfile); | |
9291a0cd | 2494 | } |
f194fefb | 2495 | |
976ca316 | 2496 | return per_objfile->get_symtab (per_cu); |
9291a0cd TT |
2497 | } |
2498 | ||
ff4c9fec | 2499 | /* See declaration. */ |
f4dc4d17 | 2500 | |
ff4c9fec | 2501 | dwarf2_per_cu_data * |
5989a64e | 2502 | dwarf2_per_bfd::get_cutu (int index) |
ff4c9fec | 2503 | { |
b76e467d | 2504 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2505 | { |
b76e467d | 2506 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2507 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2508 | return &this->all_type_units[index]->per_cu; |
2509 | } | |
f4dc4d17 | 2510 | |
ff4c9fec SM |
2511 | return this->all_comp_units[index]; |
2512 | } | |
f4dc4d17 | 2513 | |
ff4c9fec | 2514 | /* See declaration. */ |
2fdf6df6 | 2515 | |
ff4c9fec | 2516 | dwarf2_per_cu_data * |
5989a64e | 2517 | dwarf2_per_bfd::get_cu (int index) |
1fd400ff | 2518 | { |
b76e467d | 2519 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2520 | |
ff4c9fec | 2521 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2522 | } |
2523 | ||
ff4c9fec | 2524 | /* See declaration. */ |
f4dc4d17 | 2525 | |
ff4c9fec | 2526 | signatured_type * |
5989a64e | 2527 | dwarf2_per_bfd::get_tu (int index) |
f4dc4d17 | 2528 | { |
b2bdb8cf | 2529 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2530 | |
ff4c9fec | 2531 | return this->all_type_units[index]; |
1fd400ff TT |
2532 | } |
2533 | ||
d3473f0c TT |
2534 | /* See read.h. */ |
2535 | ||
2536 | dwarf2_per_cu_data * | |
5989a64e | 2537 | dwarf2_per_bfd::allocate_per_cu () |
d3473f0c TT |
2538 | { |
2539 | dwarf2_per_cu_data *result = OBSTACK_ZALLOC (&obstack, dwarf2_per_cu_data); | |
1859c670 | 2540 | result->per_bfd = this; |
d3473f0c TT |
2541 | result->index = m_num_psymtabs++; |
2542 | return result; | |
2543 | } | |
2544 | ||
2545 | /* See read.h. */ | |
2546 | ||
2547 | signatured_type * | |
5989a64e | 2548 | dwarf2_per_bfd::allocate_signatured_type () |
d3473f0c TT |
2549 | { |
2550 | signatured_type *result = OBSTACK_ZALLOC (&obstack, signatured_type); | |
1859c670 | 2551 | result->per_cu.per_bfd = this; |
d3473f0c TT |
2552 | result->per_cu.index = m_num_psymtabs++; |
2553 | return result; | |
2554 | } | |
2555 | ||
168c9250 | 2556 | /* Return a new dwarf2_per_cu_data allocated on the per-bfd |
45940949 | 2557 | obstack, and constructed with the specified field values. */ |
4b514bc8 JK |
2558 | |
2559 | static dwarf2_per_cu_data * | |
168c9250 SM |
2560 | create_cu_from_index_list (dwarf2_per_bfd *per_bfd, |
2561 | struct dwarf2_section_info *section, | |
2562 | int is_dwz, | |
2563 | sect_offset sect_off, ULONGEST length) | |
4b514bc8 | 2564 | { |
168c9250 | 2565 | dwarf2_per_cu_data *the_cu = per_bfd->allocate_per_cu (); |
4b514bc8 JK |
2566 | the_cu->sect_off = sect_off; |
2567 | the_cu->length = length; | |
4b514bc8 | 2568 | the_cu->section = section; |
168c9250 | 2569 | the_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 2570 | struct dwarf2_per_cu_quick_data); |
4b514bc8 JK |
2571 | the_cu->is_dwz = is_dwz; |
2572 | return the_cu; | |
2573 | } | |
2574 | ||
2ec9a5e0 TT |
2575 | /* A helper for create_cus_from_index that handles a given list of |
2576 | CUs. */ | |
2fdf6df6 | 2577 | |
74a0d9f6 | 2578 | static void |
168c9250 | 2579 | create_cus_from_index_list (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2580 | const gdb_byte *cu_list, offset_type n_elements, |
2581 | struct dwarf2_section_info *section, | |
b76e467d | 2582 | int is_dwz) |
9291a0cd | 2583 | { |
12359b5e | 2584 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2585 | { |
74a0d9f6 | 2586 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2587 | |
2588 | sect_offset sect_off | |
2589 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2590 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2591 | cu_list += 2 * 8; |
2592 | ||
b76e467d | 2593 | dwarf2_per_cu_data *per_cu |
168c9250 SM |
2594 | = create_cu_from_index_list (per_bfd, section, is_dwz, sect_off, |
2595 | length); | |
2596 | per_bfd->all_comp_units.push_back (per_cu); | |
9291a0cd | 2597 | } |
9291a0cd TT |
2598 | } |
2599 | ||
2ec9a5e0 | 2600 | /* Read the CU list from the mapped index, and use it to create all |
168c9250 | 2601 | the CU objects for PER_BFD. */ |
2ec9a5e0 | 2602 | |
74a0d9f6 | 2603 | static void |
168c9250 | 2604 | create_cus_from_index (dwarf2_per_bfd *per_bfd, |
2ec9a5e0 TT |
2605 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2606 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2607 | { | |
168c9250 SM |
2608 | gdb_assert (per_bfd->all_comp_units.empty ()); |
2609 | per_bfd->all_comp_units.reserve ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2610 | |
168c9250 SM |
2611 | create_cus_from_index_list (per_bfd, cu_list, cu_list_elements, |
2612 | &per_bfd->info, 0); | |
2ec9a5e0 TT |
2613 | |
2614 | if (dwz_elements == 0) | |
74a0d9f6 | 2615 | return; |
2ec9a5e0 | 2616 | |
168c9250 SM |
2617 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
2618 | create_cus_from_index_list (per_bfd, dwz_list, dwz_elements, | |
b76e467d | 2619 | &dwz->info, 1); |
2ec9a5e0 TT |
2620 | } |
2621 | ||
1fd400ff | 2622 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2623 | |
74a0d9f6 | 2624 | static void |
12359b5e | 2625 | create_signatured_type_table_from_index |
168c9250 SM |
2626 | (dwarf2_per_bfd *per_bfd, struct dwarf2_section_info *section, |
2627 | const gdb_byte *bytes, offset_type elements) | |
1fd400ff | 2628 | { |
168c9250 SM |
2629 | gdb_assert (per_bfd->all_type_units.empty ()); |
2630 | per_bfd->all_type_units.reserve (elements / 3); | |
1fd400ff | 2631 | |
298e9637 | 2632 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2633 | |
12359b5e | 2634 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2635 | { |
52dc124a | 2636 | struct signatured_type *sig_type; |
9c541725 | 2637 | ULONGEST signature; |
1fd400ff | 2638 | void **slot; |
9c541725 | 2639 | cu_offset type_offset_in_tu; |
1fd400ff | 2640 | |
74a0d9f6 | 2641 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2642 | sect_offset sect_off |
2643 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2644 | type_offset_in_tu | |
2645 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2646 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2647 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2648 | bytes += 3 * 8; | |
2649 | ||
168c9250 | 2650 | sig_type = per_bfd->allocate_signatured_type (); |
52dc124a | 2651 | sig_type->signature = signature; |
9c541725 | 2652 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2653 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2654 | sig_type->per_cu.section = section; |
9c541725 | 2655 | sig_type->per_cu.sect_off = sect_off; |
52dc124a | 2656 | sig_type->per_cu.v.quick |
168c9250 | 2657 | = OBSTACK_ZALLOC (&per_bfd->obstack, |
1fd400ff TT |
2658 | struct dwarf2_per_cu_quick_data); |
2659 | ||
b0b6a987 | 2660 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2661 | *slot = sig_type; |
1fd400ff | 2662 | |
168c9250 | 2663 | per_bfd->all_type_units.push_back (sig_type); |
1fd400ff TT |
2664 | } |
2665 | ||
168c9250 | 2666 | per_bfd->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2667 | } |
2668 | ||
927aa2e7 JK |
2669 | /* Create the signatured type hash table from .debug_names. */ |
2670 | ||
2671 | static void | |
2672 | create_signatured_type_table_from_debug_names | |
976ca316 | 2673 | (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2674 | const mapped_debug_names &map, |
2675 | struct dwarf2_section_info *section, | |
2676 | struct dwarf2_section_info *abbrev_section) | |
2677 | { | |
976ca316 | 2678 | struct objfile *objfile = per_objfile->objfile; |
ed2dc618 | 2679 | |
96b79293 TT |
2680 | section->read (objfile); |
2681 | abbrev_section->read (objfile); | |
927aa2e7 | 2682 | |
976ca316 SM |
2683 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
2684 | per_objfile->per_bfd->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2685 | |
298e9637 | 2686 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2687 | |
2688 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2689 | { | |
2690 | struct signatured_type *sig_type; | |
927aa2e7 | 2691 | void **slot; |
927aa2e7 JK |
2692 | |
2693 | sect_offset sect_off | |
2694 | = (sect_offset) (extract_unsigned_integer | |
2695 | (map.tu_table_reordered + i * map.offset_size, | |
2696 | map.offset_size, | |
2697 | map.dwarf5_byte_order)); | |
2698 | ||
2699 | comp_unit_head cu_header; | |
976ca316 | 2700 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 | 2701 | abbrev_section, |
927aa2e7 JK |
2702 | section->buffer + to_underlying (sect_off), |
2703 | rcuh_kind::TYPE); | |
2704 | ||
976ca316 | 2705 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
927aa2e7 JK |
2706 | sig_type->signature = cu_header.signature; |
2707 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2708 | sig_type->per_cu.is_debug_types = 1; | |
2709 | sig_type->per_cu.section = section; | |
2710 | sig_type->per_cu.sect_off = sect_off; | |
927aa2e7 | 2711 | sig_type->per_cu.v.quick |
976ca316 | 2712 | = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
927aa2e7 JK |
2713 | struct dwarf2_per_cu_quick_data); |
2714 | ||
b0b6a987 | 2715 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2716 | *slot = sig_type; |
2717 | ||
976ca316 | 2718 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2719 | } |
2720 | ||
976ca316 | 2721 | per_objfile->per_bfd->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2722 | } |
2723 | ||
9291a0cd | 2724 | /* Read the address map data from the mapped index, and use it to |
efd7398e | 2725 | populate the psymtabs_addrmap. */ |
2fdf6df6 | 2726 | |
9291a0cd | 2727 | static void |
976ca316 | 2728 | create_addrmap_from_index (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 2729 | struct mapped_index *index) |
9291a0cd | 2730 | { |
976ca316 | 2731 | struct objfile *objfile = per_objfile->objfile; |
efd7398e | 2732 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
08feed99 | 2733 | struct gdbarch *gdbarch = objfile->arch (); |
9291a0cd | 2734 | const gdb_byte *iter, *end; |
9291a0cd | 2735 | struct addrmap *mutable_map; |
9291a0cd TT |
2736 | CORE_ADDR baseaddr; |
2737 | ||
8268c778 PA |
2738 | auto_obstack temp_obstack; |
2739 | ||
9291a0cd TT |
2740 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2741 | ||
f00a2de2 PA |
2742 | iter = index->address_table.data (); |
2743 | end = iter + index->address_table.size (); | |
9291a0cd | 2744 | |
b3b3bada | 2745 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2746 | |
2747 | while (iter < end) | |
2748 | { | |
2749 | ULONGEST hi, lo, cu_index; | |
2750 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2751 | iter += 8; | |
2752 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2753 | iter += 8; | |
2754 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2755 | iter += 4; | |
f652bce2 | 2756 | |
24a55014 | 2757 | if (lo > hi) |
f652bce2 | 2758 | { |
b98664d3 | 2759 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2760 | hex_string (lo), hex_string (hi)); |
24a55014 | 2761 | continue; |
f652bce2 | 2762 | } |
24a55014 | 2763 | |
efd7398e | 2764 | if (cu_index >= per_bfd->all_comp_units.size ()) |
f652bce2 | 2765 | { |
b98664d3 | 2766 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2767 | (unsigned) cu_index); |
24a55014 | 2768 | continue; |
f652bce2 | 2769 | } |
24a55014 | 2770 | |
79748972 TT |
2771 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2772 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2773 | addrmap_set_empty (mutable_map, lo, hi - 1, |
efd7398e | 2774 | per_bfd->get_cu (cu_index)); |
9291a0cd TT |
2775 | } |
2776 | ||
efd7398e TT |
2777 | per_bfd->index_addrmap = addrmap_create_fixed (mutable_map, |
2778 | &per_bfd->obstack); | |
9291a0cd TT |
2779 | } |
2780 | ||
927aa2e7 | 2781 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
efd7398e | 2782 | populate the psymtabs_addrmap. */ |
927aa2e7 JK |
2783 | |
2784 | static void | |
976ca316 | 2785 | create_addrmap_from_aranges (dwarf2_per_objfile *per_objfile, |
927aa2e7 JK |
2786 | struct dwarf2_section_info *section) |
2787 | { | |
976ca316 | 2788 | struct objfile *objfile = per_objfile->objfile; |
927aa2e7 | 2789 | bfd *abfd = objfile->obfd; |
08feed99 | 2790 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 2791 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
efd7398e | 2792 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
927aa2e7 JK |
2793 | |
2794 | auto_obstack temp_obstack; | |
2795 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2796 | ||
2797 | std::unordered_map<sect_offset, | |
2798 | dwarf2_per_cu_data *, | |
2799 | gdb::hash_enum<sect_offset>> | |
2800 | debug_info_offset_to_per_cu; | |
bab287cd | 2801 | for (dwarf2_per_cu_data *per_cu : per_bfd->all_comp_units) |
927aa2e7 | 2802 | { |
927aa2e7 JK |
2803 | const auto insertpair |
2804 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2805 | if (!insertpair.second) | |
2806 | { | |
2807 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2808 | "debug_info_offset %s, ignoring .debug_aranges."), |
2809 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2810 | return; |
2811 | } | |
2812 | } | |
2813 | ||
96b79293 | 2814 | section->read (objfile); |
927aa2e7 JK |
2815 | |
2816 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2817 | ||
2818 | const gdb_byte *addr = section->buffer; | |
2819 | ||
2820 | while (addr < section->buffer + section->size) | |
2821 | { | |
2822 | const gdb_byte *const entry_addr = addr; | |
2823 | unsigned int bytes_read; | |
2824 | ||
2825 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2826 | &bytes_read); | |
2827 | addr += bytes_read; | |
2828 | ||
2829 | const gdb_byte *const entry_end = addr + entry_length; | |
2830 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2831 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2832 | if (addr + entry_length > section->buffer + section->size) | |
2833 | { | |
47e3f474 | 2834 | warning (_("Section .debug_aranges in %s entry at offset %s " |
dda83cd7 | 2835 | "length %s exceeds section length %s, " |
927aa2e7 | 2836 | "ignoring .debug_aranges."), |
47e3f474 TV |
2837 | objfile_name (objfile), |
2838 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2839 | plongest (bytes_read + entry_length), |
2840 | pulongest (section->size)); | |
2841 | return; | |
2842 | } | |
2843 | ||
2844 | /* The version number. */ | |
2845 | const uint16_t version = read_2_bytes (abfd, addr); | |
2846 | addr += 2; | |
2847 | if (version != 2) | |
2848 | { | |
47e3f474 | 2849 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2850 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2851 | objfile_name (objfile), |
2852 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2853 | return; |
2854 | } | |
2855 | ||
2856 | const uint64_t debug_info_offset | |
2857 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2858 | addr += offset_size; | |
2859 | const auto per_cu_it | |
2860 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2861 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2862 | { | |
47e3f474 | 2863 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2864 | "debug_info_offset %s does not exists, " |
2865 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2866 | objfile_name (objfile), |
2867 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2868 | pulongest (debug_info_offset)); |
2869 | return; | |
2870 | } | |
2871 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2872 | ||
2873 | const uint8_t address_size = *addr++; | |
2874 | if (address_size < 1 || address_size > 8) | |
2875 | { | |
47e3f474 | 2876 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2877 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2878 | objfile_name (objfile), |
2879 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2880 | return; |
2881 | } | |
2882 | ||
2883 | const uint8_t segment_selector_size = *addr++; | |
2884 | if (segment_selector_size != 0) | |
2885 | { | |
47e3f474 | 2886 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2887 | "segment_selector_size %u is not supported, " |
2888 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2889 | objfile_name (objfile), |
2890 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2891 | segment_selector_size); |
2892 | return; | |
2893 | } | |
2894 | ||
2895 | /* Must pad to an alignment boundary that is twice the address | |
dda83cd7 SM |
2896 | size. It is undocumented by the DWARF standard but GCC does |
2897 | use it. */ | |
927aa2e7 JK |
2898 | for (size_t padding = ((-(addr - section->buffer)) |
2899 | & (2 * address_size - 1)); | |
dda83cd7 | 2900 | padding > 0; padding--) |
927aa2e7 JK |
2901 | if (*addr++ != 0) |
2902 | { | |
47e3f474 | 2903 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2904 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2905 | objfile_name (objfile), |
2906 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2907 | return; |
2908 | } | |
2909 | ||
2910 | for (;;) | |
2911 | { | |
2912 | if (addr + 2 * address_size > entry_end) | |
2913 | { | |
47e3f474 | 2914 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2915 | "address list is not properly terminated, " |
2916 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2917 | objfile_name (objfile), |
2918 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2919 | return; |
2920 | } | |
2921 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2922 | dwarf5_byte_order); | |
2923 | addr += address_size; | |
2924 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2925 | dwarf5_byte_order); | |
2926 | addr += address_size; | |
2927 | if (start == 0 && length == 0) | |
2928 | break; | |
efd7398e | 2929 | if (start == 0 && !per_bfd->has_section_at_zero) |
927aa2e7 JK |
2930 | { |
2931 | /* Symbol was eliminated due to a COMDAT group. */ | |
2932 | continue; | |
2933 | } | |
2934 | ULONGEST end = start + length; | |
79748972 TT |
2935 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
2936 | - baseaddr); | |
2937 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
2938 | - baseaddr); | |
927aa2e7 JK |
2939 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
2940 | } | |
2941 | } | |
2942 | ||
efd7398e TT |
2943 | per_bfd->index_addrmap = addrmap_create_fixed (mutable_map, |
2944 | &per_bfd->obstack); | |
927aa2e7 JK |
2945 | } |
2946 | ||
9291a0cd TT |
2947 | /* Find a slot in the mapped index INDEX for the object named NAME. |
2948 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
2949 | constant pool and return true. If NAME cannot be found, return |
2950 | false. */ | |
2fdf6df6 | 2951 | |
109483d9 | 2952 | static bool |
9291a0cd TT |
2953 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
2954 | offset_type **vec_out) | |
2955 | { | |
0cf03b49 | 2956 | offset_type hash; |
9291a0cd | 2957 | offset_type slot, step; |
559a7a62 | 2958 | int (*cmp) (const char *, const char *); |
9291a0cd | 2959 | |
791afaa2 | 2960 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 2961 | if (current_language->la_language == language_cplus |
45280282 IB |
2962 | || current_language->la_language == language_fortran |
2963 | || current_language->la_language == language_d) | |
0cf03b49 JK |
2964 | { |
2965 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2966 | not contain any. */ | |
a8719064 | 2967 | |
72998fb3 | 2968 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2969 | { |
109483d9 | 2970 | without_params = cp_remove_params (name); |
0cf03b49 | 2971 | |
72998fb3 | 2972 | if (without_params != NULL) |
791afaa2 | 2973 | name = without_params.get (); |
0cf03b49 JK |
2974 | } |
2975 | } | |
2976 | ||
559a7a62 | 2977 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2978 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2979 | simulate our NAME being searched is also lowercased. */ |
2980 | hash = mapped_index_string_hash ((index->version == 4 | |
dda83cd7 | 2981 | && case_sensitivity == case_sensitive_off |
559a7a62 JK |
2982 | ? 5 : index->version), |
2983 | name); | |
2984 | ||
f00a2de2 PA |
2985 | slot = hash & (index->symbol_table.size () - 1); |
2986 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 2987 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2988 | |
2989 | for (;;) | |
2990 | { | |
9291a0cd | 2991 | const char *str; |
f00a2de2 PA |
2992 | |
2993 | const auto &bucket = index->symbol_table[slot]; | |
2994 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 2995 | return false; |
9291a0cd | 2996 | |
f00a2de2 | 2997 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 2998 | if (!cmp (name, str)) |
9291a0cd TT |
2999 | { |
3000 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 3001 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 3002 | return true; |
9291a0cd TT |
3003 | } |
3004 | ||
f00a2de2 | 3005 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
3006 | } |
3007 | } | |
3008 | ||
4485a1c1 SM |
3009 | /* A helper function that reads the .gdb_index from BUFFER and fills |
3010 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 3011 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
3012 | ok to use deprecated sections. |
3013 | ||
3014 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3015 | out parameters that are filled in with information about the CU and | |
3016 | TU lists in the section. | |
3017 | ||
4485a1c1 | 3018 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 3019 | |
d33bc52e | 3020 | static bool |
3810f182 | 3021 | read_gdb_index_from_buffer (const char *filename, |
4485a1c1 SM |
3022 | bool deprecated_ok, |
3023 | gdb::array_view<const gdb_byte> buffer, | |
3024 | struct mapped_index *map, | |
3025 | const gdb_byte **cu_list, | |
3026 | offset_type *cu_list_elements, | |
3027 | const gdb_byte **types_list, | |
3028 | offset_type *types_list_elements) | |
3029 | { | |
3030 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 3031 | |
9291a0cd | 3032 | /* Version check. */ |
4485a1c1 | 3033 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3034 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3035 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3036 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3037 | indices. */ |
831adc1f | 3038 | if (version < 4) |
481860b3 GB |
3039 | { |
3040 | static int warning_printed = 0; | |
3041 | if (!warning_printed) | |
3042 | { | |
3043 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3044 | filename); |
481860b3 GB |
3045 | warning_printed = 1; |
3046 | } | |
3047 | return 0; | |
3048 | } | |
3049 | /* Index version 4 uses a different hash function than index version | |
3050 | 5 and later. | |
3051 | ||
3052 | Versions earlier than 6 did not emit psymbols for inlined | |
3053 | functions. Using these files will cause GDB not to be able to | |
3054 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3055 | indices unless the user has done |
3056 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3057 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3058 | { |
3059 | static int warning_printed = 0; | |
3060 | if (!warning_printed) | |
3061 | { | |
e615022a DE |
3062 | warning (_("\ |
3063 | Skipping deprecated .gdb_index section in %s.\n\ | |
3064 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3065 | to use the section anyway."), | |
2ec9a5e0 | 3066 | filename); |
481860b3 GB |
3067 | warning_printed = 1; |
3068 | } | |
3069 | return 0; | |
3070 | } | |
796a7ff8 | 3071 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3072 | of the TU (for symbols coming from TUs), |
3073 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3074 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3075 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3076 | These are just performance bugs, and we can't distinguish gdb-generated | |
3077 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3078 | |
481860b3 | 3079 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3080 | longer backward compatible. */ |
796a7ff8 | 3081 | if (version > 8) |
594e8718 | 3082 | return 0; |
9291a0cd | 3083 | |
559a7a62 | 3084 | map->version = version; |
9291a0cd | 3085 | |
4485a1c1 | 3086 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3087 | |
4485a1c1 | 3088 | int i = 0; |
2ec9a5e0 TT |
3089 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3090 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3091 | / 8); | |
1fd400ff TT |
3092 | ++i; |
3093 | ||
2ec9a5e0 TT |
3094 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3095 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3096 | - MAYBE_SWAP (metadata[i])) | |
3097 | / 8); | |
987d643c | 3098 | ++i; |
1fd400ff | 3099 | |
f00a2de2 PA |
3100 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3101 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3102 | map->address_table | |
3103 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3104 | ++i; |
3105 | ||
f00a2de2 PA |
3106 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3107 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3108 | map->symbol_table | |
3109 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3110 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3111 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3112 | |
f00a2de2 | 3113 | ++i; |
f9d83a0b | 3114 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3115 | |
2ec9a5e0 TT |
3116 | return 1; |
3117 | } | |
3118 | ||
4485a1c1 SM |
3119 | /* Callback types for dwarf2_read_gdb_index. */ |
3120 | ||
3121 | typedef gdb::function_view | |
5989a64e | 3122 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_bfd *)> |
4485a1c1 SM |
3123 | get_gdb_index_contents_ftype; |
3124 | typedef gdb::function_view | |
3125 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3126 | get_gdb_index_contents_dwz_ftype; | |
3127 | ||
927aa2e7 | 3128 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3129 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3130 | ||
3131 | static int | |
4485a1c1 | 3132 | dwarf2_read_gdb_index |
976ca316 | 3133 | (dwarf2_per_objfile *per_objfile, |
4485a1c1 SM |
3134 | get_gdb_index_contents_ftype get_gdb_index_contents, |
3135 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3136 | { |
2ec9a5e0 TT |
3137 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3138 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3139 | struct dwz_file *dwz; |
976ca316 | 3140 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 3141 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
2ec9a5e0 | 3142 | |
4485a1c1 | 3143 | gdb::array_view<const gdb_byte> main_index_contents |
f8c41851 | 3144 | = get_gdb_index_contents (objfile, per_bfd); |
4485a1c1 SM |
3145 | |
3146 | if (main_index_contents.empty ()) | |
3147 | return 0; | |
3148 | ||
3063847f | 3149 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
3810f182 | 3150 | if (!read_gdb_index_from_buffer (objfile_name (objfile), |
4485a1c1 SM |
3151 | use_deprecated_index_sections, |
3152 | main_index_contents, map.get (), &cu_list, | |
3153 | &cu_list_elements, &types_list, | |
3154 | &types_list_elements)) | |
2ec9a5e0 TT |
3155 | return 0; |
3156 | ||
0fefef59 | 3157 | /* Don't use the index if it's empty. */ |
3063847f | 3158 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3159 | return 0; |
3160 | ||
2ec9a5e0 TT |
3161 | /* If there is a .dwz file, read it so we can get its CU list as |
3162 | well. */ | |
f8c41851 | 3163 | dwz = dwarf2_get_dwz_file (per_bfd); |
4db1a1dc | 3164 | if (dwz != NULL) |
2ec9a5e0 | 3165 | { |
2ec9a5e0 TT |
3166 | struct mapped_index dwz_map; |
3167 | const gdb_byte *dwz_types_ignore; | |
3168 | offset_type dwz_types_elements_ignore; | |
3169 | ||
4485a1c1 SM |
3170 | gdb::array_view<const gdb_byte> dwz_index_content |
3171 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3172 | ||
3173 | if (dwz_index_content.empty ()) | |
3174 | return 0; | |
3175 | ||
3810f182 | 3176 | if (!read_gdb_index_from_buffer (bfd_get_filename (dwz->dwz_bfd.get ()), |
00f93c44 | 3177 | 1, dwz_index_content, &dwz_map, |
4485a1c1 SM |
3178 | &dwz_list, &dwz_list_elements, |
3179 | &dwz_types_ignore, | |
3180 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3181 | { |
3182 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3183 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3184 | return 0; |
3185 | } | |
3186 | } | |
3187 | ||
f8c41851 SM |
3188 | create_cus_from_index (per_bfd, cu_list, cu_list_elements, dwz_list, |
3189 | dwz_list_elements); | |
1fd400ff | 3190 | |
8b70b953 TT |
3191 | if (types_list_elements) |
3192 | { | |
8b70b953 TT |
3193 | /* We can only handle a single .debug_types when we have an |
3194 | index. */ | |
f8c41851 | 3195 | if (per_bfd->types.size () != 1) |
8b70b953 TT |
3196 | return 0; |
3197 | ||
f8c41851 | 3198 | dwarf2_section_info *section = &per_bfd->types[0]; |
8b70b953 | 3199 | |
f8c41851 | 3200 | create_signatured_type_table_from_index (per_bfd, section, types_list, |
168c9250 | 3201 | types_list_elements); |
8b70b953 | 3202 | } |
9291a0cd | 3203 | |
976ca316 | 3204 | create_addrmap_from_index (per_objfile, map.get ()); |
9291a0cd | 3205 | |
f8c41851 SM |
3206 | per_bfd->index_table = std::move (map); |
3207 | per_bfd->using_index = 1; | |
3208 | per_bfd->quick_file_names_table = | |
3209 | create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
3210 | ||
9291a0cd TT |
3211 | return 1; |
3212 | } | |
3213 | ||
dee91e82 | 3214 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3215 | |
dee91e82 DE |
3216 | static void |
3217 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
3e225074 | 3218 | struct die_info *comp_unit_die) |
9291a0cd | 3219 | { |
dee91e82 | 3220 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3221 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
976ca316 | 3222 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
094b34ac | 3223 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3224 | struct attribute *attr; |
7b9f3c50 DE |
3225 | void **slot; |
3226 | struct quick_file_names *qfn; | |
9291a0cd | 3227 | |
0186c6a7 DE |
3228 | gdb_assert (! this_cu->is_debug_types); |
3229 | ||
07261596 TT |
3230 | /* Our callers never want to match partial units -- instead they |
3231 | will match the enclosing full CU. */ | |
3232 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3233 | { | |
3234 | this_cu->v.quick->no_file_data = 1; | |
3235 | return; | |
3236 | } | |
3237 | ||
0186c6a7 | 3238 | lh_cu = this_cu; |
7b9f3c50 | 3239 | slot = NULL; |
dee91e82 | 3240 | |
fff8551c | 3241 | line_header_up lh; |
9c541725 | 3242 | sect_offset line_offset {}; |
fff8551c | 3243 | |
dee91e82 | 3244 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
d4df075e | 3245 | if (attr != nullptr && attr->form_is_unsigned ()) |
9291a0cd | 3246 | { |
7b9f3c50 DE |
3247 | struct quick_file_names find_entry; |
3248 | ||
d4df075e | 3249 | line_offset = (sect_offset) attr->as_unsigned (); |
7b9f3c50 DE |
3250 | |
3251 | /* We may have already read in this line header (TU line header sharing). | |
3252 | If we have we're done. */ | |
094b34ac | 3253 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3254 | find_entry.hash.line_sect_off = line_offset; |
976ca316 | 3255 | slot = htab_find_slot (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 DE |
3256 | &find_entry, INSERT); |
3257 | if (*slot != NULL) | |
3258 | { | |
9a3c8263 | 3259 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3260 | return; |
7b9f3c50 DE |
3261 | } |
3262 | ||
3019eac3 | 3263 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3264 | } |
3265 | if (lh == NULL) | |
3266 | { | |
094b34ac | 3267 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3268 | return; |
9291a0cd TT |
3269 | } |
3270 | ||
976ca316 | 3271 | qfn = XOBNEW (&per_objfile->per_bfd->obstack, struct quick_file_names); |
094b34ac | 3272 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3273 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3274 | gdb_assert (slot != NULL); |
3275 | *slot = qfn; | |
9291a0cd | 3276 | |
d721ba37 | 3277 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3278 | |
aa391654 TT |
3279 | int offset = 0; |
3280 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3281 | ++offset; | |
3282 | ||
7ba99d21 | 3283 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3284 | qfn->file_names = |
976ca316 | 3285 | XOBNEWVEC (&per_objfile->per_bfd->obstack, const char *, |
45940949 | 3286 | qfn->num_file_names); |
aa391654 TT |
3287 | if (offset != 0) |
3288 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3289 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3290 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3291 | fnd.comp_dir).release (); | |
7b9f3c50 | 3292 | qfn->real_names = NULL; |
9291a0cd | 3293 | |
094b34ac | 3294 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3295 | } |
3296 | ||
3297 | /* A helper for the "quick" functions which attempts to read the line | |
3298 | table for THIS_CU. */ | |
3299 | ||
3300 | static struct quick_file_names * | |
ab432490 SM |
3301 | dw2_get_file_names (dwarf2_per_cu_data *this_cu, |
3302 | dwarf2_per_objfile *per_objfile) | |
dee91e82 | 3303 | { |
0186c6a7 DE |
3304 | /* This should never be called for TUs. */ |
3305 | gdb_assert (! this_cu->is_debug_types); | |
3306 | /* Nor type unit groups. */ | |
197400e8 | 3307 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3308 | |
dee91e82 DE |
3309 | if (this_cu->v.quick->file_names != NULL) |
3310 | return this_cu->v.quick->file_names; | |
3311 | /* If we know there is no line data, no point in looking again. */ | |
3312 | if (this_cu->v.quick->no_file_data) | |
3313 | return NULL; | |
3314 | ||
ab432490 | 3315 | cutu_reader reader (this_cu, per_objfile); |
c0ab21c2 | 3316 | if (!reader.dummy_p) |
eb5dd737 | 3317 | dw2_get_file_names_reader (&reader, reader.comp_unit_die); |
dee91e82 DE |
3318 | |
3319 | if (this_cu->v.quick->no_file_data) | |
3320 | return NULL; | |
3321 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3322 | } |
3323 | ||
3324 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3325 | real path for a given file name from the line table. */ |
2fdf6df6 | 3326 | |
9291a0cd | 3327 | static const char * |
976ca316 | 3328 | dw2_get_real_path (dwarf2_per_objfile *per_objfile, |
7b9f3c50 | 3329 | struct quick_file_names *qfn, int index) |
9291a0cd | 3330 | { |
7b9f3c50 | 3331 | if (qfn->real_names == NULL) |
976ca316 | 3332 | qfn->real_names = OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
26f2dc30 | 3333 | qfn->num_file_names, const char *); |
9291a0cd | 3334 | |
7b9f3c50 | 3335 | if (qfn->real_names[index] == NULL) |
14278e1f | 3336 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3337 | |
7b9f3c50 | 3338 | return qfn->real_names[index]; |
9291a0cd TT |
3339 | } |
3340 | ||
39298a5d TT |
3341 | struct symtab * |
3342 | dwarf2_base_index_functions::find_last_source_symtab (struct objfile *objfile) | |
9291a0cd | 3343 | { |
976ca316 SM |
3344 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3345 | dwarf2_per_cu_data *dwarf_cu = per_objfile->per_bfd->all_comp_units.back (); | |
3346 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, per_objfile, false); | |
ae2de4f8 | 3347 | |
43f3e411 DE |
3348 | if (cust == NULL) |
3349 | return NULL; | |
ed2dc618 | 3350 | |
43f3e411 | 3351 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3352 | } |
3353 | ||
7b9f3c50 DE |
3354 | /* Traversal function for dw2_forget_cached_source_info. */ |
3355 | ||
3356 | static int | |
3357 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3358 | { |
7b9f3c50 | 3359 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3360 | |
7b9f3c50 | 3361 | if (file_data->real_names) |
9291a0cd | 3362 | { |
7b9f3c50 | 3363 | int i; |
9291a0cd | 3364 | |
7b9f3c50 | 3365 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3366 | { |
7b9f3c50 DE |
3367 | xfree ((void*) file_data->real_names[i]); |
3368 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3369 | } |
3370 | } | |
7b9f3c50 DE |
3371 | |
3372 | return 1; | |
3373 | } | |
3374 | ||
39298a5d TT |
3375 | void |
3376 | dwarf2_base_index_functions::forget_cached_source_info | |
3377 | (struct objfile *objfile) | |
7b9f3c50 | 3378 | { |
976ca316 | 3379 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
7b9f3c50 | 3380 | |
976ca316 | 3381 | htab_traverse_noresize (per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 | 3382 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3383 | } |
3384 | ||
f8eba3c6 TT |
3385 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3386 | the symtabs and calls the iterator. */ | |
3387 | ||
3388 | static int | |
3389 | dw2_map_expand_apply (struct objfile *objfile, | |
3390 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3391 | const char *name, const char *real_path, |
14bc53a8 | 3392 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3393 | { |
43f3e411 | 3394 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3395 | |
3396 | /* Don't visit already-expanded CUs. */ | |
af758d11 SM |
3397 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3398 | if (per_objfile->symtab_set_p (per_cu)) | |
f8eba3c6 TT |
3399 | return 0; |
3400 | ||
3401 | /* This may expand more than one symtab, and we want to iterate over | |
3402 | all of them. */ | |
97a1449a | 3403 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
f8eba3c6 | 3404 | |
14bc53a8 PA |
3405 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3406 | last_made, callback); | |
f8eba3c6 TT |
3407 | } |
3408 | ||
3409 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3410 | ||
39298a5d TT |
3411 | bool |
3412 | dwarf2_base_index_functions::map_symtabs_matching_filename | |
14bc53a8 PA |
3413 | (struct objfile *objfile, const char *name, const char *real_path, |
3414 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3415 | { |
c011a4f4 | 3416 | const char *name_basename = lbasename (name); |
976ca316 | 3417 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 3418 | |
848e3e78 DE |
3419 | /* The rule is CUs specify all the files, including those used by |
3420 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3421 | |
976ca316 | 3422 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3423 | { |
3d7bb9d9 | 3424 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3425 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3426 | continue; |
3427 | ||
976ca316 | 3428 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3429 | if (file_data == NULL) |
9291a0cd TT |
3430 | continue; |
3431 | ||
b76e467d | 3432 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3433 | { |
7b9f3c50 | 3434 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3435 | const char *this_real_name; |
9291a0cd | 3436 | |
af529f8f | 3437 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3438 | { |
f5b95b50 | 3439 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3440 | callback)) |
3441 | return true; | |
288e77a7 | 3442 | continue; |
4aac40c8 | 3443 | } |
9291a0cd | 3444 | |
c011a4f4 DE |
3445 | /* Before we invoke realpath, which can get expensive when many |
3446 | files are involved, do a quick comparison of the basenames. */ | |
3447 | if (! basenames_may_differ | |
3448 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3449 | continue; | |
3450 | ||
976ca316 | 3451 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
da235a7c | 3452 | if (compare_filenames_for_search (this_real_name, name)) |
9291a0cd | 3453 | { |
da235a7c | 3454 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3455 | callback)) |
3456 | return true; | |
288e77a7 | 3457 | continue; |
da235a7c | 3458 | } |
9291a0cd | 3459 | |
da235a7c JK |
3460 | if (real_path != NULL) |
3461 | { | |
af529f8f JK |
3462 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3463 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3464 | if (this_real_name != NULL |
af529f8f | 3465 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3466 | { |
f5b95b50 | 3467 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3468 | callback)) |
3469 | return true; | |
288e77a7 | 3470 | continue; |
9291a0cd TT |
3471 | } |
3472 | } | |
3473 | } | |
3474 | } | |
3475 | ||
14bc53a8 | 3476 | return false; |
9291a0cd TT |
3477 | } |
3478 | ||
da51c347 DE |
3479 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3480 | ||
3481 | struct dw2_symtab_iterator | |
9291a0cd | 3482 | { |
ed2dc618 | 3483 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
976ca316 | 3484 | dwarf2_per_objfile *per_objfile; |
2b79f376 SM |
3485 | /* If set, only look for symbols that match that block. Valid values are |
3486 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3487 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3488 | /* The kind of symbol we're looking for. */ |
3489 | domain_enum domain; | |
3490 | /* The list of CUs from the index entry of the symbol, | |
3491 | or NULL if not found. */ | |
3492 | offset_type *vec; | |
3493 | /* The next element in VEC to look at. */ | |
3494 | int next; | |
3495 | /* The number of elements in VEC, or zero if there is no match. */ | |
3496 | int length; | |
8943b874 DE |
3497 | /* Have we seen a global version of the symbol? |
3498 | If so we can ignore all further global instances. | |
3499 | This is to work around gold/15646, inefficient gold-generated | |
3500 | indices. */ | |
3501 | int global_seen; | |
da51c347 | 3502 | }; |
9291a0cd | 3503 | |
e5f3ece2 | 3504 | /* Initialize the index symtab iterator ITER, common part. */ |
2fdf6df6 | 3505 | |
9291a0cd | 3506 | static void |
e5f3ece2 TV |
3507 | dw2_symtab_iter_init_common (struct dw2_symtab_iterator *iter, |
3508 | dwarf2_per_objfile *per_objfile, | |
3509 | gdb::optional<block_enum> block_index, | |
3510 | domain_enum domain) | |
da51c347 | 3511 | { |
976ca316 | 3512 | iter->per_objfile = per_objfile; |
da51c347 DE |
3513 | iter->block_index = block_index; |
3514 | iter->domain = domain; | |
3515 | iter->next = 0; | |
8943b874 | 3516 | iter->global_seen = 0; |
e5f3ece2 TV |
3517 | iter->vec = NULL; |
3518 | iter->length = 0; | |
3519 | } | |
da51c347 | 3520 | |
e5f3ece2 TV |
3521 | /* Initialize the index symtab iterator ITER, const char *NAME variant. */ |
3522 | ||
3523 | static void | |
3524 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3525 | dwarf2_per_objfile *per_objfile, | |
3526 | gdb::optional<block_enum> block_index, | |
3527 | domain_enum domain, | |
3528 | const char *name) | |
3529 | { | |
3530 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
ed2dc618 | 3531 | |
e5f3ece2 | 3532 | mapped_index *index = per_objfile->per_bfd->index_table.get (); |
ed2dc618 | 3533 | /* index is NULL if OBJF_READNOW. */ |
e5f3ece2 TV |
3534 | if (index == NULL) |
3535 | return; | |
3536 | ||
3537 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 | 3538 | iter->length = MAYBE_SWAP (*iter->vec); |
e5f3ece2 TV |
3539 | } |
3540 | ||
3541 | /* Initialize the index symtab iterator ITER, offset_type NAMEI variant. */ | |
3542 | ||
3543 | static void | |
3544 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, | |
3545 | dwarf2_per_objfile *per_objfile, | |
3546 | gdb::optional<block_enum> block_index, | |
3547 | domain_enum domain, offset_type namei) | |
3548 | { | |
3549 | dw2_symtab_iter_init_common (iter, per_objfile, block_index, domain); | |
3550 | ||
3551 | mapped_index *index = per_objfile->per_bfd->index_table.get (); | |
3552 | /* index is NULL if OBJF_READNOW. */ | |
3553 | if (index == NULL) | |
3554 | return; | |
3555 | ||
3556 | gdb_assert (!index->symbol_name_slot_invalid (namei)); | |
3557 | const auto &bucket = index->symbol_table[namei]; | |
3558 | ||
3559 | iter->vec = (offset_type *) (index->constant_pool | |
3560 | + MAYBE_SWAP (bucket.vec)); | |
3561 | iter->length = MAYBE_SWAP (*iter->vec); | |
da51c347 DE |
3562 | } |
3563 | ||
3564 | /* Return the next matching CU or NULL if there are no more. */ | |
3565 | ||
3566 | static struct dwarf2_per_cu_data * | |
3567 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3568 | { | |
976ca316 | 3569 | dwarf2_per_objfile *per_objfile = iter->per_objfile; |
ed2dc618 | 3570 | |
da51c347 DE |
3571 | for ( ; iter->next < iter->length; ++iter->next) |
3572 | { | |
3573 | offset_type cu_index_and_attrs = | |
3574 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3575 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3576 | gdb_index_symbol_kind symbol_kind = |
3577 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3578 | /* Only check the symbol attributes if they're present. | |
3579 | Indices prior to version 7 don't record them, | |
3580 | and indices >= 7 may elide them for certain symbols | |
3581 | (gold does this). */ | |
3582 | int attrs_valid = | |
976ca316 | 3583 | (per_objfile->per_bfd->index_table->version >= 7 |
da51c347 DE |
3584 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3585 | ||
3190f0c6 | 3586 | /* Don't crash on bad data. */ |
976ca316 SM |
3587 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
3588 | + per_objfile->per_bfd->all_type_units.size ())) | |
3190f0c6 | 3589 | { |
b98664d3 | 3590 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 3591 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
3190f0c6 DE |
3592 | continue; |
3593 | } | |
3594 | ||
976ca316 | 3595 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
3190f0c6 | 3596 | |
da51c347 | 3597 | /* Skip if already read in. */ |
976ca316 | 3598 | if (per_objfile->symtab_set_p (per_cu)) |
da51c347 DE |
3599 | continue; |
3600 | ||
8943b874 DE |
3601 | /* Check static vs global. */ |
3602 | if (attrs_valid) | |
3603 | { | |
2b79f376 SM |
3604 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3605 | ||
3606 | if (iter->block_index.has_value ()) | |
3607 | { | |
3608 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3609 | ||
3610 | if (is_static != want_static) | |
3611 | continue; | |
3612 | } | |
3613 | ||
8943b874 | 3614 | /* Work around gold/15646. */ |
f030440d TV |
3615 | if (!is_static |
3616 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
3617 | { | |
3618 | if (iter->global_seen) | |
3619 | continue; | |
3620 | ||
3621 | iter->global_seen = 1; | |
3622 | } | |
8943b874 | 3623 | } |
da51c347 DE |
3624 | |
3625 | /* Only check the symbol's kind if it has one. */ | |
3626 | if (attrs_valid) | |
3627 | { | |
3628 | switch (iter->domain) | |
3629 | { | |
3630 | case VAR_DOMAIN: | |
3631 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3632 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3633 | /* Some types are also in VAR_DOMAIN. */ | |
3634 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3635 | continue; | |
3636 | break; | |
3637 | case STRUCT_DOMAIN: | |
3638 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3639 | continue; | |
3640 | break; | |
3641 | case LABEL_DOMAIN: | |
3642 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3643 | continue; | |
3644 | break; | |
59c35742 AB |
3645 | case MODULE_DOMAIN: |
3646 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3647 | continue; | |
3648 | break; | |
da51c347 DE |
3649 | default: |
3650 | break; | |
3651 | } | |
3652 | } | |
3653 | ||
3654 | ++iter->next; | |
3655 | return per_cu; | |
3656 | } | |
3657 | ||
3658 | return NULL; | |
3659 | } | |
3660 | ||
39298a5d TT |
3661 | struct compunit_symtab * |
3662 | dwarf2_gdb_index::lookup_symbol (struct objfile *objfile, | |
3663 | block_enum block_index, | |
3664 | const char *name, domain_enum domain) | |
9291a0cd | 3665 | { |
43f3e411 | 3666 | struct compunit_symtab *stab_best = NULL; |
976ca316 | 3667 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 3668 | |
b5ec771e PA |
3669 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3670 | ||
ed2dc618 SM |
3671 | struct dw2_symtab_iterator iter; |
3672 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3673 | |
976ca316 | 3674 | dw2_symtab_iter_init (&iter, per_objfile, block_index, domain, name); |
9291a0cd | 3675 | |
ed2dc618 SM |
3676 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3677 | { | |
3678 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 3679 | struct compunit_symtab *stab |
976ca316 | 3680 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
ed2dc618 | 3681 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3682 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3683 | |
ed2dc618 SM |
3684 | sym = block_find_symbol (block, name, domain, |
3685 | block_find_non_opaque_type_preferred, | |
3686 | &with_opaque); | |
b2e2f908 | 3687 | |
ed2dc618 SM |
3688 | /* Some caution must be observed with overloaded functions |
3689 | and methods, since the index will not contain any overload | |
3690 | information (but NAME might contain it). */ | |
da51c347 | 3691 | |
ed2dc618 SM |
3692 | if (sym != NULL |
3693 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3694 | return stab; | |
3695 | if (with_opaque != NULL | |
3696 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3697 | stab_best = stab; | |
da51c347 | 3698 | |
ed2dc618 | 3699 | /* Keep looking through other CUs. */ |
9291a0cd | 3700 | } |
9291a0cd | 3701 | |
da51c347 | 3702 | return stab_best; |
9291a0cd TT |
3703 | } |
3704 | ||
39298a5d | 3705 | void |
4829711b TT |
3706 | dwarf2_base_index_functions::print_stats (struct objfile *objfile, |
3707 | bool print_bcache) | |
9291a0cd | 3708 | { |
4829711b TT |
3709 | if (print_bcache) |
3710 | return; | |
3711 | ||
976ca316 SM |
3712 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3713 | int total = (per_objfile->per_bfd->all_comp_units.size () | |
3714 | + per_objfile->per_bfd->all_type_units.size ()); | |
ed2dc618 | 3715 | int count = 0; |
9291a0cd | 3716 | |
ed2dc618 | 3717 | for (int i = 0; i < total; ++i) |
9291a0cd | 3718 | { |
976ca316 | 3719 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3720 | |
976ca316 | 3721 | if (!per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3722 | ++count; |
3723 | } | |
e4a48d9d | 3724 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3725 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3726 | } | |
3727 | ||
779bd270 DE |
3728 | /* This dumps minimal information about the index. |
3729 | It is called via "mt print objfiles". | |
3730 | One use is to verify .gdb_index has been loaded by the | |
3731 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3732 | ||
39298a5d TT |
3733 | void |
3734 | dwarf2_gdb_index::dump (struct objfile *objfile) | |
9291a0cd | 3735 | { |
976ca316 | 3736 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 3737 | |
976ca316 | 3738 | gdb_assert (per_objfile->per_bfd->using_index); |
779bd270 | 3739 | printf_filtered (".gdb_index:"); |
976ca316 | 3740 | if (per_objfile->per_bfd->index_table != NULL) |
779bd270 DE |
3741 | { |
3742 | printf_filtered (" version %d\n", | |
976ca316 | 3743 | per_objfile->per_bfd->index_table->version); |
779bd270 DE |
3744 | } |
3745 | else | |
3746 | printf_filtered (" faked for \"readnow\"\n"); | |
3747 | printf_filtered ("\n"); | |
9291a0cd TT |
3748 | } |
3749 | ||
39298a5d TT |
3750 | void |
3751 | dwarf2_gdb_index::expand_symtabs_for_function (struct objfile *objfile, | |
3752 | const char *func_name) | |
9291a0cd | 3753 | { |
976ca316 | 3754 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
da51c347 | 3755 | |
ed2dc618 SM |
3756 | struct dw2_symtab_iterator iter; |
3757 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3758 | |
976ca316 | 3759 | dw2_symtab_iter_init (&iter, per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3760 | |
ed2dc618 | 3761 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3762 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
da51c347 | 3763 | |
9291a0cd TT |
3764 | } |
3765 | ||
39298a5d TT |
3766 | void |
3767 | dwarf2_base_index_functions::expand_all_symtabs (struct objfile *objfile) | |
9291a0cd | 3768 | { |
976ca316 SM |
3769 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3770 | int total_units = (per_objfile->per_bfd->all_comp_units.size () | |
3771 | + per_objfile->per_bfd->all_type_units.size ()); | |
9291a0cd | 3772 | |
ed2dc618 | 3773 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3774 | { |
976ca316 | 3775 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3776 | |
58f0c718 TT |
3777 | /* We don't want to directly expand a partial CU, because if we |
3778 | read it with the wrong language, then assertion failures can | |
3779 | be triggered later on. See PR symtab/23010. So, tell | |
3780 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3781 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
976ca316 | 3782 | dw2_instantiate_symtab (per_cu, per_objfile, true); |
9291a0cd TT |
3783 | } |
3784 | } | |
3785 | ||
39298a5d TT |
3786 | void |
3787 | dwarf2_base_index_functions::expand_symtabs_with_fullname | |
3788 | (struct objfile *objfile, const char *fullname) | |
9291a0cd | 3789 | { |
976ca316 | 3790 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
d4637a04 DE |
3791 | |
3792 | /* We don't need to consider type units here. | |
3793 | This is only called for examining code, e.g. expand_line_sal. | |
3794 | There can be an order of magnitude (or more) more type units | |
3795 | than comp units, and we avoid them if we can. */ | |
3796 | ||
976ca316 | 3797 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3798 | { |
3d7bb9d9 | 3799 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 3800 | if (per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3801 | continue; |
3802 | ||
976ca316 | 3803 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
7b9f3c50 | 3804 | if (file_data == NULL) |
9291a0cd TT |
3805 | continue; |
3806 | ||
b76e467d | 3807 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3808 | { |
652a8996 JK |
3809 | const char *this_fullname = file_data->file_names[j]; |
3810 | ||
3811 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3812 | { |
976ca316 | 3813 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
9291a0cd TT |
3814 | break; |
3815 | } | |
3816 | } | |
3817 | } | |
3818 | } | |
3819 | ||
9a0bacfb TV |
3820 | static void |
3821 | dw2_expand_symtabs_matching_symbol | |
3822 | (mapped_index_base &index, | |
3823 | const lookup_name_info &lookup_name_in, | |
3824 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
fcf23d5b SM |
3825 | gdb::function_view<bool (offset_type)> match_callback, |
3826 | dwarf2_per_objfile *per_objfile); | |
9a0bacfb TV |
3827 | |
3828 | static void | |
3829 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
3830 | (dwarf2_per_cu_data *per_cu, |
3831 | dwarf2_per_objfile *per_objfile, | |
9a0bacfb TV |
3832 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3833 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify); | |
3834 | ||
9291a0cd | 3835 | static void |
199b4314 TT |
3836 | dw2_map_matching_symbols |
3837 | (struct objfile *objfile, | |
b054970d | 3838 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3839 | int global, |
3840 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3841 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3842 | { |
1aa98955 | 3843 | /* Used for Ada. */ |
976ca316 | 3844 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
1aa98955 | 3845 | |
9a0bacfb TV |
3846 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
3847 | ||
976ca316 | 3848 | if (per_objfile->per_bfd->index_table != nullptr) |
1aa98955 | 3849 | { |
976ca316 | 3850 | mapped_index &index = *per_objfile->per_bfd->index_table; |
1aa98955 | 3851 | |
9a0bacfb TV |
3852 | const char *match_name = name.ada ().lookup_name ().c_str (); |
3853 | auto matcher = [&] (const char *symname) | |
3854 | { | |
3855 | if (ordered_compare == nullptr) | |
3856 | return true; | |
3857 | return ordered_compare (symname, match_name) == 0; | |
3858 | }; | |
3859 | ||
b64f703b | 3860 | dw2_expand_symtabs_matching_symbol (index, name, matcher, |
9a0bacfb TV |
3861 | [&] (offset_type namei) |
3862 | { | |
3863 | struct dw2_symtab_iterator iter; | |
3864 | struct dwarf2_per_cu_data *per_cu; | |
3865 | ||
976ca316 | 3866 | dw2_symtab_iter_init (&iter, per_objfile, block_kind, domain, |
e5f3ece2 | 3867 | namei); |
9a0bacfb | 3868 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
976ca316 | 3869 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 3870 | nullptr); |
9a0bacfb | 3871 | return true; |
976ca316 | 3872 | }, per_objfile); |
9a0bacfb TV |
3873 | } |
3874 | else | |
3875 | { | |
3876 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3877 | proceed assuming all symtabs have been read in. */ | |
3878 | } | |
1aa98955 TV |
3879 | |
3880 | for (compunit_symtab *cust : objfile->compunits ()) | |
3881 | { | |
3882 | const struct block *block; | |
3883 | ||
3884 | if (cust == NULL) | |
3885 | continue; | |
3886 | block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
3887 | if (!iterate_over_symbols_terminated (block, name, | |
3888 | domain, callback)) | |
3889 | return; | |
3890 | } | |
9291a0cd TT |
3891 | } |
3892 | ||
39298a5d TT |
3893 | void |
3894 | dwarf2_gdb_index::map_matching_symbols | |
3895 | (struct objfile *objfile, | |
3896 | const lookup_name_info &name, domain_enum domain, | |
3897 | int global, | |
3898 | gdb::function_view<symbol_found_callback_ftype> callback, | |
3899 | symbol_compare_ftype *ordered_compare) | |
3900 | { | |
3901 | dw2_map_matching_symbols (objfile, name, domain, global, callback, | |
3902 | ordered_compare); | |
3903 | } | |
3904 | ||
e1ef7d7a PA |
3905 | /* Starting from a search name, return the string that finds the upper |
3906 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3907 | list. Returns the empty string to indicate that the upper bound is | |
3908 | the end of the list. */ | |
3909 | ||
3910 | static std::string | |
3911 | make_sort_after_prefix_name (const char *search_name) | |
3912 | { | |
3913 | /* When looking to complete "func", we find the upper bound of all | |
3914 | symbols that start with "func" by looking for where we'd insert | |
3915 | the closest string that would follow "func" in lexicographical | |
3916 | order. Usually, that's "func"-with-last-character-incremented, | |
3917 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3918 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3919 | Especially mind the 0xff character, which is a valid character in | |
3920 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3921 | rule out compilers allowing it in identifiers. Note that | |
3922 | conveniently, strcmp/strcasecmp are specified to compare | |
3923 | characters interpreted as unsigned char. So what we do is treat | |
3924 | the whole string as a base 256 number composed of a sequence of | |
3925 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3926 | to 0, and carries 1 to the following more-significant position. | |
3927 | If the very first character in SEARCH_NAME ends up incremented | |
3928 | and carries/overflows, then the upper bound is the end of the | |
3929 | list. The string after the empty string is also the empty | |
3930 | string. | |
3931 | ||
3932 | Some examples of this operation: | |
3933 | ||
3934 | SEARCH_NAME => "+1" RESULT | |
3935 | ||
3936 | "abc" => "abd" | |
3937 | "ab\xff" => "ac" | |
3938 | "\xff" "a" "\xff" => "\xff" "b" | |
3939 | "\xff" => "" | |
3940 | "\xff\xff" => "" | |
3941 | "" => "" | |
3942 | ||
3943 | Then, with these symbols for example: | |
3944 | ||
3945 | func | |
3946 | func1 | |
3947 | fund | |
3948 | ||
3949 | completing "func" looks for symbols between "func" and | |
3950 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3951 | which finds "func" and "func1", but not "fund". | |
3952 | ||
3953 | And with: | |
3954 | ||
3955 | funcÿ (Latin1 'ÿ' [0xff]) | |
3956 | funcÿ1 | |
3957 | fund | |
3958 | ||
3959 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3960 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3961 | ||
3962 | And with: | |
3963 | ||
3964 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3965 | ÿÿ1 | |
3966 | ||
3967 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3968 | the end of the list. | |
3969 | */ | |
3970 | std::string after = search_name; | |
3971 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3972 | after.pop_back (); | |
3973 | if (!after.empty ()) | |
3974 | after.back () = (unsigned char) after.back () + 1; | |
3975 | return after; | |
3976 | } | |
3977 | ||
5c58de74 | 3978 | /* See declaration. */ |
61d96d7e | 3979 | |
5c58de74 PA |
3980 | std::pair<std::vector<name_component>::const_iterator, |
3981 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3982 | mapped_index_base::find_name_components_bounds |
fcf23d5b SM |
3983 | (const lookup_name_info &lookup_name_without_params, language lang, |
3984 | dwarf2_per_objfile *per_objfile) const | |
3f563c84 | 3985 | { |
5c58de74 PA |
3986 | auto *name_cmp |
3987 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3988 | |
3b00ef10 | 3989 | const char *lang_name |
e0802d59 | 3990 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 3991 | |
3f563c84 PA |
3992 | /* Comparison function object for lower_bound that matches against a |
3993 | given symbol name. */ | |
3994 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3995 | const char *name) | |
3996 | { | |
fcf23d5b | 3997 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
3998 | const char *elem_name = elem_qualified + elem.name_offset; |
3999 | return name_cmp (elem_name, name) < 0; | |
4000 | }; | |
4001 | ||
4002 | /* Comparison function object for upper_bound that matches against a | |
4003 | given symbol name. */ | |
4004 | auto lookup_compare_upper = [&] (const char *name, | |
4005 | const name_component &elem) | |
4006 | { | |
fcf23d5b | 4007 | const char *elem_qualified = this->symbol_name_at (elem.idx, per_objfile); |
3f563c84 PA |
4008 | const char *elem_name = elem_qualified + elem.name_offset; |
4009 | return name_cmp (name, elem_name) < 0; | |
4010 | }; | |
4011 | ||
5c58de74 PA |
4012 | auto begin = this->name_components.begin (); |
4013 | auto end = this->name_components.end (); | |
3f563c84 PA |
4014 | |
4015 | /* Find the lower bound. */ | |
4016 | auto lower = [&] () | |
4017 | { | |
3b00ef10 | 4018 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
4019 | return begin; |
4020 | else | |
3b00ef10 | 4021 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
4022 | } (); |
4023 | ||
4024 | /* Find the upper bound. */ | |
4025 | auto upper = [&] () | |
4026 | { | |
5c58de74 | 4027 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4028 | { |
e1ef7d7a PA |
4029 | /* In completion mode, we want UPPER to point past all |
4030 | symbols names that have the same prefix. I.e., with | |
4031 | these symbols, and completing "func": | |
4032 | ||
4033 | function << lower bound | |
4034 | function1 | |
4035 | other_function << upper bound | |
4036 | ||
4037 | We find the upper bound by looking for the insertion | |
4038 | point of "func"-with-last-character-incremented, | |
4039 | i.e. "fund". */ | |
3b00ef10 | 4040 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 4041 | if (after.empty ()) |
3f563c84 | 4042 | return end; |
e6b2f5ef PA |
4043 | return std::lower_bound (lower, end, after.c_str (), |
4044 | lookup_compare_lower); | |
3f563c84 PA |
4045 | } |
4046 | else | |
3b00ef10 | 4047 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
4048 | } (); |
4049 | ||
5c58de74 PA |
4050 | return {lower, upper}; |
4051 | } | |
4052 | ||
4053 | /* See declaration. */ | |
4054 | ||
4055 | void | |
fcf23d5b | 4056 | mapped_index_base::build_name_components (dwarf2_per_objfile *per_objfile) |
5c58de74 PA |
4057 | { |
4058 | if (!this->name_components.empty ()) | |
4059 | return; | |
4060 | ||
4061 | this->name_components_casing = case_sensitivity; | |
4062 | auto *name_cmp | |
4063 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4064 | ||
4065 | /* The code below only knows how to break apart components of C++ | |
4066 | symbol names (and other languages that use '::' as | |
3b00ef10 | 4067 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
4068 | auto count = this->symbol_name_count (); |
4069 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4070 | { |
44ed8f3e | 4071 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4072 | continue; |
4073 | ||
fcf23d5b | 4074 | const char *name = this->symbol_name_at (idx, per_objfile); |
5c58de74 PA |
4075 | |
4076 | /* Add each name component to the name component table. */ | |
4077 | unsigned int previous_len = 0; | |
3b00ef10 TT |
4078 | |
4079 | if (strstr (name, "::") != nullptr) | |
4080 | { | |
4081 | for (unsigned int current_len = cp_find_first_component (name); | |
4082 | name[current_len] != '\0'; | |
4083 | current_len += cp_find_first_component (name + current_len)) | |
4084 | { | |
4085 | gdb_assert (name[current_len] == ':'); | |
4086 | this->name_components.push_back ({previous_len, idx}); | |
4087 | /* Skip the '::'. */ | |
4088 | current_len += 2; | |
4089 | previous_len = current_len; | |
4090 | } | |
4091 | } | |
4092 | else | |
5c58de74 | 4093 | { |
3b00ef10 TT |
4094 | /* Handle the Ada encoded (aka mangled) form here. */ |
4095 | for (const char *iter = strstr (name, "__"); | |
4096 | iter != nullptr; | |
4097 | iter = strstr (iter, "__")) | |
4098 | { | |
4099 | this->name_components.push_back ({previous_len, idx}); | |
4100 | iter += 2; | |
4101 | previous_len = iter - name; | |
4102 | } | |
5c58de74 | 4103 | } |
3b00ef10 | 4104 | |
5c58de74 PA |
4105 | this->name_components.push_back ({previous_len, idx}); |
4106 | } | |
4107 | ||
4108 | /* Sort name_components elements by name. */ | |
4109 | auto name_comp_compare = [&] (const name_component &left, | |
4110 | const name_component &right) | |
4111 | { | |
fcf23d5b SM |
4112 | const char *left_qualified |
4113 | = this->symbol_name_at (left.idx, per_objfile); | |
4114 | const char *right_qualified | |
4115 | = this->symbol_name_at (right.idx, per_objfile); | |
5c58de74 PA |
4116 | |
4117 | const char *left_name = left_qualified + left.name_offset; | |
4118 | const char *right_name = right_qualified + right.name_offset; | |
4119 | ||
4120 | return name_cmp (left_name, right_name) < 0; | |
4121 | }; | |
4122 | ||
4123 | std::sort (this->name_components.begin (), | |
4124 | this->name_components.end (), | |
4125 | name_comp_compare); | |
4126 | } | |
4127 | ||
4128 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4129 | mapped_index_base instead of the containing objfile. This is split |
4130 | to a separate function in order to be able to unit test the | |
4131 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4132 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4133 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4134 | |
4135 | static void | |
4136 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4137 | (mapped_index_base &index, |
5c58de74 PA |
4138 | const lookup_name_info &lookup_name_in, |
4139 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
fcf23d5b SM |
4140 | gdb::function_view<bool (offset_type)> match_callback, |
4141 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4142 | { |
4143 | lookup_name_info lookup_name_without_params | |
4144 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4145 | |
4146 | /* Build the symbol name component sorted vector, if we haven't | |
4147 | yet. */ | |
fcf23d5b | 4148 | index.build_name_components (per_objfile); |
5c58de74 | 4149 | |
3f563c84 PA |
4150 | /* The same symbol may appear more than once in the range though. |
4151 | E.g., if we're looking for symbols that complete "w", and we have | |
4152 | a symbol named "w1::w2", we'll find the two name components for | |
4153 | that same symbol in the range. To be sure we only call the | |
4154 | callback once per symbol, we first collect the symbol name | |
4155 | indexes that matched in a temporary vector and ignore | |
4156 | duplicates. */ | |
4157 | std::vector<offset_type> matches; | |
3f563c84 | 4158 | |
3b00ef10 TT |
4159 | struct name_and_matcher |
4160 | { | |
4161 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 4162 | const char *name; |
3b00ef10 TT |
4163 | |
4164 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4165 | { |
ecc6c606 | 4166 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
4167 | } |
4168 | }; | |
4169 | ||
4170 | /* A vector holding all the different symbol name matchers, for all | |
4171 | languages. */ | |
4172 | std::vector<name_and_matcher> matchers; | |
4173 | ||
4174 | for (int i = 0; i < nr_languages; i++) | |
4175 | { | |
4176 | enum language lang_e = (enum language) i; | |
4177 | ||
4178 | const language_defn *lang = language_def (lang_e); | |
4179 | symbol_name_matcher_ftype *name_matcher | |
c9debfb9 | 4180 | = lang->get_symbol_name_matcher (lookup_name_without_params); |
3f563c84 | 4181 | |
3b00ef10 | 4182 | name_and_matcher key { |
dda83cd7 | 4183 | name_matcher, |
3b00ef10 TT |
4184 | lookup_name_without_params.language_lookup_name (lang_e) |
4185 | }; | |
4186 | ||
4187 | /* Don't insert the same comparison routine more than once. | |
4188 | Note that we do this linear walk. This is not a problem in | |
4189 | practice because the number of supported languages is | |
4190 | low. */ | |
4191 | if (std::find (matchers.begin (), matchers.end (), key) | |
4192 | != matchers.end ()) | |
9291a0cd | 4193 | continue; |
3b00ef10 TT |
4194 | matchers.push_back (std::move (key)); |
4195 | ||
4196 | auto bounds | |
4197 | = index.find_name_components_bounds (lookup_name_without_params, | |
fcf23d5b | 4198 | lang_e, per_objfile); |
3b00ef10 TT |
4199 | |
4200 | /* Now for each symbol name in range, check to see if we have a name | |
4201 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4202 | ||
4203 | for (; bounds.first != bounds.second; ++bounds.first) | |
4204 | { | |
fcf23d5b SM |
4205 | const char *qualified |
4206 | = index.symbol_name_at (bounds.first->idx, per_objfile); | |
3b00ef10 TT |
4207 | |
4208 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4209 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4210 | continue; | |
9291a0cd | 4211 | |
3b00ef10 TT |
4212 | matches.push_back (bounds.first->idx); |
4213 | } | |
3f563c84 PA |
4214 | } |
4215 | ||
4216 | std::sort (matches.begin (), matches.end ()); | |
4217 | ||
4218 | /* Finally call the callback, once per match. */ | |
4219 | ULONGEST prev = -1; | |
4220 | for (offset_type idx : matches) | |
4221 | { | |
4222 | if (prev != idx) | |
4223 | { | |
3b00ef10 TT |
4224 | if (!match_callback (idx)) |
4225 | break; | |
3f563c84 PA |
4226 | prev = idx; |
4227 | } | |
4228 | } | |
4229 | ||
4230 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4231 | (offset_type)-1 are both possible values. */ | |
4232 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4233 | } | |
4234 | ||
c62446b1 PA |
4235 | #if GDB_SELF_TEST |
4236 | ||
4237 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4238 | ||
a3c5fafd PA |
4239 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4240 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4241 | mapped_index_base interface. Builds an index from the symbol list | |
4242 | passed as parameter to the constructor. */ | |
4243 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4244 | { |
4245 | public: | |
a3c5fafd PA |
4246 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4247 | : m_symbol_table (symbols) | |
c62446b1 PA |
4248 | {} |
4249 | ||
a3c5fafd | 4250 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4251 | |
a3c5fafd | 4252 | /* Return the number of names in the symbol table. */ |
632e107b | 4253 | size_t symbol_name_count () const override |
c62446b1 | 4254 | { |
a3c5fafd | 4255 | return m_symbol_table.size (); |
c62446b1 PA |
4256 | } |
4257 | ||
a3c5fafd | 4258 | /* Get the name of the symbol at IDX in the symbol table. */ |
fcf23d5b SM |
4259 | const char *symbol_name_at |
4260 | (offset_type idx, dwarf2_per_objfile *per_objfile) const override | |
a3c5fafd PA |
4261 | { |
4262 | return m_symbol_table[idx]; | |
4263 | } | |
c62446b1 | 4264 | |
a3c5fafd PA |
4265 | private: |
4266 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4267 | }; |
4268 | ||
4269 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4270 | string, to pass to print routines. */ | |
4271 | ||
4272 | static const char * | |
4273 | string_or_null (const char *str) | |
4274 | { | |
4275 | return str != NULL ? str : "<null>"; | |
4276 | } | |
4277 | ||
4278 | /* Check if a lookup_name_info built from | |
4279 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4280 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4281 | matching order. If no match expected, then an empty list is | |
4282 | specified. Returns true on success. On failure prints a warning | |
4283 | indicating the file:line that failed, and returns false. */ | |
4284 | ||
4285 | static bool | |
4286 | check_match (const char *file, int line, | |
4287 | mock_mapped_index &mock_index, | |
4288 | const char *name, symbol_name_match_type match_type, | |
4289 | bool completion_mode, | |
fcf23d5b SM |
4290 | std::initializer_list<const char *> expected_list, |
4291 | dwarf2_per_objfile *per_objfile) | |
c62446b1 PA |
4292 | { |
4293 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4294 | ||
4295 | bool matched = true; | |
4296 | ||
4297 | auto mismatch = [&] (const char *expected_str, | |
4298 | const char *got) | |
4299 | { | |
4300 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4301 | "expected=\"%s\", got=\"%s\"\n"), | |
4302 | file, line, | |
4303 | (match_type == symbol_name_match_type::FULL | |
4304 | ? "FULL" : "WILD"), | |
4305 | name, string_or_null (expected_str), string_or_null (got)); | |
4306 | matched = false; | |
4307 | }; | |
4308 | ||
4309 | auto expected_it = expected_list.begin (); | |
4310 | auto expected_end = expected_list.end (); | |
4311 | ||
a3c5fafd | 4312 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
b64f703b | 4313 | nullptr, |
c62446b1 PA |
4314 | [&] (offset_type idx) |
4315 | { | |
fcf23d5b | 4316 | const char *matched_name = mock_index.symbol_name_at (idx, per_objfile); |
c62446b1 PA |
4317 | const char *expected_str |
4318 | = expected_it == expected_end ? NULL : *expected_it++; | |
4319 | ||
4320 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4321 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4322 | return true; |
fcf23d5b | 4323 | }, per_objfile); |
c62446b1 PA |
4324 | |
4325 | const char *expected_str | |
4326 | = expected_it == expected_end ? NULL : *expected_it++; | |
4327 | if (expected_str != NULL) | |
4328 | mismatch (expected_str, NULL); | |
4329 | ||
4330 | return matched; | |
4331 | } | |
4332 | ||
4333 | /* The symbols added to the mock mapped_index for testing (in | |
4334 | canonical form). */ | |
4335 | static const char *test_symbols[] = { | |
4336 | "function", | |
4337 | "std::bar", | |
4338 | "std::zfunction", | |
4339 | "std::zfunction2", | |
4340 | "w1::w2", | |
4341 | "ns::foo<char*>", | |
4342 | "ns::foo<int>", | |
4343 | "ns::foo<long>", | |
a20714ff PA |
4344 | "ns2::tmpl<int>::foo2", |
4345 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4346 | |
e1ef7d7a PA |
4347 | /* These are used to check that the increment-last-char in the |
4348 | matching algorithm for completion doesn't match "t1_fund" when | |
4349 | completing "t1_func". */ | |
4350 | "t1_func", | |
4351 | "t1_func1", | |
4352 | "t1_fund", | |
4353 | "t1_fund1", | |
4354 | ||
4355 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4356 | cp-name-parser understands this as a single identifier ("função" | |
4357 | is "function" in PT). */ | |
4358 | u8"u8função", | |
4359 | ||
4360 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4361 | "yfunc\377", | |
4362 | ||
4363 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4364 | "\377", | |
4365 | "\377\377123", | |
4366 | ||
c62446b1 PA |
4367 | /* A name with all sorts of complications. Starts with "z" to make |
4368 | it easier for the completion tests below. */ | |
4369 | #define Z_SYM_NAME \ | |
4370 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4371 | "::tuple<(anonymous namespace)::ui*, " \ | |
4372 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4373 | ||
4374 | Z_SYM_NAME | |
4375 | }; | |
4376 | ||
a3c5fafd PA |
4377 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4378 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4379 | in completion mode. */ | |
5c58de74 PA |
4380 | |
4381 | static bool | |
a3c5fafd | 4382 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 | 4383 | const char *search_name, |
fcf23d5b SM |
4384 | gdb::array_view<const char *> expected_syms, |
4385 | dwarf2_per_objfile *per_objfile) | |
5c58de74 PA |
4386 | { |
4387 | lookup_name_info lookup_name (search_name, | |
4388 | symbol_name_match_type::FULL, true); | |
4389 | ||
3b00ef10 | 4390 | auto bounds = index.find_name_components_bounds (lookup_name, |
fcf23d5b SM |
4391 | language_cplus, |
4392 | per_objfile); | |
5c58de74 PA |
4393 | |
4394 | size_t distance = std::distance (bounds.first, bounds.second); | |
4395 | if (distance != expected_syms.size ()) | |
4396 | return false; | |
4397 | ||
4398 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4399 | { | |
4400 | auto nc_elem = bounds.first + exp_elem; | |
fcf23d5b | 4401 | const char *qualified = index.symbol_name_at (nc_elem->idx, per_objfile); |
5c58de74 PA |
4402 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) |
4403 | return false; | |
4404 | } | |
4405 | ||
4406 | return true; | |
4407 | } | |
4408 | ||
4409 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4410 | method. */ | |
4411 | ||
c62446b1 | 4412 | static void |
5c58de74 PA |
4413 | test_mapped_index_find_name_component_bounds () |
4414 | { | |
4415 | mock_mapped_index mock_index (test_symbols); | |
4416 | ||
fcf23d5b | 4417 | mock_index.build_name_components (NULL /* per_objfile */); |
5c58de74 PA |
4418 | |
4419 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4420 | method in completion mode. */ | |
4421 | { | |
4422 | static const char *expected_syms[] = { | |
4423 | "t1_func", | |
4424 | "t1_func1", | |
5c58de74 PA |
4425 | }; |
4426 | ||
fcf23d5b SM |
4427 | SELF_CHECK (check_find_bounds_finds |
4428 | (mock_index, "t1_func", expected_syms, | |
4429 | NULL /* per_objfile */)); | |
5c58de74 PA |
4430 | } |
4431 | ||
4432 | /* Check that the increment-last-char in the name matching algorithm | |
4433 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4434 | { | |
4435 | static const char *expected_syms1[] = { | |
4436 | "\377", | |
4437 | "\377\377123", | |
4438 | }; | |
fcf23d5b SM |
4439 | SELF_CHECK (check_find_bounds_finds |
4440 | (mock_index, "\377", expected_syms1, NULL /* per_objfile */)); | |
5c58de74 PA |
4441 | |
4442 | static const char *expected_syms2[] = { | |
4443 | "\377\377123", | |
4444 | }; | |
fcf23d5b SM |
4445 | SELF_CHECK (check_find_bounds_finds |
4446 | (mock_index, "\377\377", expected_syms2, | |
4447 | NULL /* per_objfile */)); | |
5c58de74 PA |
4448 | } |
4449 | } | |
4450 | ||
4451 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4452 | ||
4453 | static void | |
4454 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4455 | { |
4456 | mock_mapped_index mock_index (test_symbols); | |
4457 | ||
4458 | /* We let all tests run until the end even if some fails, for debug | |
4459 | convenience. */ | |
4460 | bool any_mismatch = false; | |
4461 | ||
4462 | /* Create the expected symbols list (an initializer_list). Needed | |
4463 | because lists have commas, and we need to pass them to CHECK, | |
4464 | which is a macro. */ | |
4465 | #define EXPECT(...) { __VA_ARGS__ } | |
4466 | ||
4467 | /* Wrapper for check_match that passes down the current | |
4468 | __FILE__/__LINE__. */ | |
4469 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4470 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4471 | mock_index, \ | |
4472 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
fcf23d5b | 4473 | EXPECTED_LIST, NULL) |
c62446b1 PA |
4474 | |
4475 | /* Identity checks. */ | |
4476 | for (const char *sym : test_symbols) | |
4477 | { | |
4478 | /* Should be able to match all existing symbols. */ | |
4479 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4480 | EXPECT (sym)); | |
4481 | ||
4482 | /* Should be able to match all existing symbols with | |
4483 | parameters. */ | |
4484 | std::string with_params = std::string (sym) + "(int)"; | |
4485 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4486 | EXPECT (sym)); | |
4487 | ||
4488 | /* Should be able to match all existing symbols with | |
4489 | parameters and qualifiers. */ | |
4490 | with_params = std::string (sym) + " ( int ) const"; | |
4491 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4492 | EXPECT (sym)); | |
4493 | ||
4494 | /* This should really find sym, but cp-name-parser.y doesn't | |
4495 | know about lvalue/rvalue qualifiers yet. */ | |
4496 | with_params = std::string (sym) + " ( int ) &&"; | |
4497 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4498 | {}); | |
4499 | } | |
4500 | ||
e1ef7d7a PA |
4501 | /* Check that the name matching algorithm for completion doesn't get |
4502 | confused with Latin1 'ÿ' / 0xff. */ | |
4503 | { | |
4504 | static const char str[] = "\377"; | |
4505 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4506 | EXPECT ("\377", "\377\377123")); | |
4507 | } | |
4508 | ||
4509 | /* Check that the increment-last-char in the matching algorithm for | |
4510 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4511 | { | |
4512 | static const char str[] = "t1_func"; | |
4513 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4514 | EXPECT ("t1_func", "t1_func1")); | |
4515 | } | |
4516 | ||
c62446b1 PA |
4517 | /* Check that completion mode works at each prefix of the expected |
4518 | symbol name. */ | |
4519 | { | |
4520 | static const char str[] = "function(int)"; | |
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 ("function")); | |
4529 | } | |
4530 | } | |
4531 | ||
4532 | /* While "w" is a prefix of both components, the match function | |
4533 | should still only be called once. */ | |
4534 | { | |
4535 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4536 | EXPECT ("w1::w2")); | |
a20714ff PA |
4537 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4538 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4539 | } |
4540 | ||
4541 | /* Same, with a "complicated" symbol. */ | |
4542 | { | |
4543 | static const char str[] = Z_SYM_NAME; | |
4544 | size_t len = strlen (str); | |
4545 | std::string lookup; | |
4546 | ||
4547 | for (size_t i = 1; i < len; i++) | |
4548 | { | |
4549 | lookup.assign (str, i); | |
4550 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4551 | EXPECT (Z_SYM_NAME)); | |
4552 | } | |
4553 | } | |
4554 | ||
4555 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4556 | { | |
4557 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4558 | {}); | |
4559 | } | |
4560 | ||
4561 | /* A complete symbol with parameters matches any overload, since the | |
4562 | index has no overload info. */ | |
4563 | { | |
4564 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4565 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4566 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4567 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4568 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4569 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4570 | } |
4571 | ||
4572 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4573 | template argument list. */ | |
4574 | { | |
4575 | static const char expected[] = "ns::foo<int>"; | |
4576 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4577 | EXPECT (expected)); | |
a20714ff PA |
4578 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4579 | EXPECT (expected)); | |
c62446b1 PA |
4580 | } |
4581 | ||
4582 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4583 | template argument list that includes a pointer. */ | |
4584 | { | |
4585 | static const char expected[] = "ns::foo<char*>"; | |
4586 | /* Try both completion and non-completion modes. */ | |
4587 | static const bool completion_mode[2] = {false, true}; | |
4588 | for (size_t i = 0; i < 2; i++) | |
4589 | { | |
4590 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4591 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4592 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4593 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4594 | |
4595 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4596 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4597 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4598 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4599 | } |
4600 | } | |
4601 | ||
4602 | { | |
4603 | /* Check method qualifiers are ignored. */ | |
4604 | static const char expected[] = "ns::foo<char*>"; | |
4605 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4606 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4607 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4608 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4609 | CHECK_MATCH ("foo < char * > ( int ) const", |
4610 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4611 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4612 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4613 | } |
4614 | ||
4615 | /* Test lookup names that don't match anything. */ | |
4616 | { | |
a20714ff PA |
4617 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4618 | {}); | |
4619 | ||
c62446b1 PA |
4620 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4621 | {}); | |
4622 | } | |
4623 | ||
a20714ff PA |
4624 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4625 | which should not be confused with a parameter list. */ | |
4626 | { | |
4627 | static const char *syms[] = { | |
4628 | "A::B::C", | |
4629 | "B::C", | |
4630 | "C", | |
4631 | "A :: B :: C ( int )", | |
4632 | "B :: C ( int )", | |
4633 | "C ( int )", | |
4634 | }; | |
4635 | ||
4636 | for (const char *s : syms) | |
4637 | { | |
4638 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4639 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4640 | } | |
4641 | } | |
4642 | ||
4643 | { | |
4644 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4645 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4646 | EXPECT (expected)); | |
4647 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4648 | EXPECT (expected)); | |
4649 | } | |
4650 | ||
c62446b1 PA |
4651 | SELF_CHECK (!any_mismatch); |
4652 | ||
4653 | #undef EXPECT | |
4654 | #undef CHECK_MATCH | |
4655 | } | |
4656 | ||
5c58de74 PA |
4657 | static void |
4658 | run_test () | |
4659 | { | |
4660 | test_mapped_index_find_name_component_bounds (); | |
4661 | test_dw2_expand_symtabs_matching_symbol (); | |
4662 | } | |
4663 | ||
c62446b1 PA |
4664 | }} // namespace selftests::dw2_expand_symtabs_matching |
4665 | ||
4666 | #endif /* GDB_SELF_TEST */ | |
4667 | ||
4b514bc8 JK |
4668 | /* If FILE_MATCHER is NULL or if PER_CU has |
4669 | dwarf2_per_cu_quick_data::MARK set (see | |
4670 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4671 | EXPANSION_NOTIFY on it. */ | |
4672 | ||
4673 | static void | |
4674 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
4675 | (dwarf2_per_cu_data *per_cu, |
4676 | dwarf2_per_objfile *per_objfile, | |
4b514bc8 JK |
4677 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4678 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4679 | { | |
4680 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4681 | { | |
af758d11 | 4682 | bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); |
4b514bc8 | 4683 | |
97a1449a SM |
4684 | compunit_symtab *symtab |
4685 | = dw2_instantiate_symtab (per_cu, per_objfile, false); | |
af758d11 | 4686 | gdb_assert (symtab != nullptr); |
4b514bc8 | 4687 | |
af758d11 SM |
4688 | if (expansion_notify != NULL && symtab_was_null) |
4689 | expansion_notify (symtab); | |
4b514bc8 JK |
4690 | } |
4691 | } | |
4692 | ||
3f563c84 PA |
4693 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4694 | matched, to expand corresponding CUs that were marked. IDX is the | |
4695 | index of the symbol name that matched. */ | |
4696 | ||
4697 | static void | |
4698 | dw2_expand_marked_cus | |
976ca316 | 4699 | (dwarf2_per_objfile *per_objfile, offset_type idx, |
3f563c84 PA |
4700 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4701 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4702 | search_domain kind) | |
4703 | { | |
3f563c84 PA |
4704 | offset_type *vec, vec_len, vec_idx; |
4705 | bool global_seen = false; | |
976ca316 | 4706 | mapped_index &index = *per_objfile->per_bfd->index_table; |
3f563c84 | 4707 | |
61920122 | 4708 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4709 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4710 | vec_len = MAYBE_SWAP (vec[0]); |
4711 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4712 | { | |
61920122 PA |
4713 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4714 | /* This value is only valid for index versions >= 7. */ | |
4715 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4716 | gdb_index_symbol_kind symbol_kind = | |
4717 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4718 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4719 | /* Only check the symbol attributes if they're present. | |
4720 | Indices prior to version 7 don't record them, | |
4721 | and indices >= 7 may elide them for certain symbols | |
4722 | (gold does this). */ | |
4723 | int attrs_valid = | |
4724 | (index.version >= 7 | |
4725 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4726 | ||
4727 | /* Work around gold/15646. */ | |
f030440d TV |
4728 | if (attrs_valid |
4729 | && !is_static | |
4730 | && symbol_kind == GDB_INDEX_SYMBOL_KIND_TYPE) | |
9291a0cd | 4731 | { |
f030440d | 4732 | if (global_seen) |
61920122 | 4733 | continue; |
f030440d TV |
4734 | |
4735 | global_seen = true; | |
61920122 | 4736 | } |
3190f0c6 | 4737 | |
61920122 PA |
4738 | /* Only check the symbol's kind if it has one. */ |
4739 | if (attrs_valid) | |
4740 | { | |
4741 | switch (kind) | |
8943b874 | 4742 | { |
61920122 PA |
4743 | case VARIABLES_DOMAIN: |
4744 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4745 | continue; | |
4746 | break; | |
4747 | case FUNCTIONS_DOMAIN: | |
4748 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4749 | continue; |
61920122 PA |
4750 | break; |
4751 | case TYPES_DOMAIN: | |
4752 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4753 | continue; | |
4754 | break; | |
59c35742 AB |
4755 | case MODULES_DOMAIN: |
4756 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4757 | continue; | |
4758 | break; | |
61920122 PA |
4759 | default: |
4760 | break; | |
8943b874 | 4761 | } |
61920122 | 4762 | } |
8943b874 | 4763 | |
61920122 | 4764 | /* Don't crash on bad data. */ |
976ca316 SM |
4765 | if (cu_index >= (per_objfile->per_bfd->all_comp_units.size () |
4766 | + per_objfile->per_bfd->all_type_units.size ())) | |
61920122 | 4767 | { |
b98664d3 | 4768 | complaint (_(".gdb_index entry has bad CU index" |
976ca316 | 4769 | " [in module %s]"), objfile_name (per_objfile->objfile)); |
61920122 PA |
4770 | continue; |
4771 | } | |
4772 | ||
976ca316 SM |
4773 | dwarf2_per_cu_data *per_cu = per_objfile->per_bfd->get_cutu (cu_index); |
4774 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, | |
4b514bc8 | 4775 | expansion_notify); |
61920122 PA |
4776 | } |
4777 | } | |
4778 | ||
4b514bc8 JK |
4779 | /* If FILE_MATCHER is non-NULL, set all the |
4780 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4781 | that match FILE_MATCHER. */ | |
4782 | ||
61920122 | 4783 | static void |
4b514bc8 | 4784 | dw_expand_symtabs_matching_file_matcher |
976ca316 | 4785 | (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 4786 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) |
61920122 | 4787 | { |
4b514bc8 | 4788 | if (file_matcher == NULL) |
61920122 PA |
4789 | return; |
4790 | ||
4b514bc8 JK |
4791 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4792 | htab_eq_pointer, | |
4793 | NULL, xcalloc, xfree)); | |
4794 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4795 | htab_eq_pointer, |
4796 | NULL, xcalloc, xfree)); | |
61920122 | 4797 | |
4b514bc8 JK |
4798 | /* The rule is CUs specify all the files, including those used by |
4799 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4800 | |
976ca316 | 4801 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4802 | { |
927aa2e7 JK |
4803 | QUIT; |
4804 | ||
4805 | per_cu->v.quick->mark = 0; | |
4806 | ||
4807 | /* We only need to look at symtabs not already expanded. */ | |
976ca316 | 4808 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4809 | continue; |
4810 | ||
976ca316 | 4811 | quick_file_names *file_data = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
4812 | if (file_data == NULL) |
4813 | continue; | |
4814 | ||
4815 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4816 | continue; | |
4817 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4818 | { | |
4819 | per_cu->v.quick->mark = 1; | |
4820 | continue; | |
4821 | } | |
4822 | ||
b76e467d | 4823 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4824 | { |
4825 | const char *this_real_name; | |
4826 | ||
4827 | if (file_matcher (file_data->file_names[j], false)) | |
4828 | { | |
4829 | per_cu->v.quick->mark = 1; | |
4830 | break; | |
4831 | } | |
4832 | ||
4833 | /* Before we invoke realpath, which can get expensive when many | |
4834 | files are involved, do a quick comparison of the basenames. */ | |
4835 | if (!basenames_may_differ | |
4836 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4837 | true)) | |
4838 | continue; | |
4839 | ||
976ca316 | 4840 | this_real_name = dw2_get_real_path (per_objfile, file_data, j); |
927aa2e7 JK |
4841 | if (file_matcher (this_real_name, false)) |
4842 | { | |
4843 | per_cu->v.quick->mark = 1; | |
4844 | break; | |
4845 | } | |
4846 | } | |
4847 | ||
b76e467d SM |
4848 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4849 | ? visited_found.get () | |
4850 | : visited_not_found.get (), | |
4851 | file_data, INSERT); | |
927aa2e7 JK |
4852 | *slot = file_data; |
4853 | } | |
4854 | } | |
4855 | ||
4856 | static void | |
4857 | dw2_expand_symtabs_matching | |
4858 | (struct objfile *objfile, | |
4859 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 4860 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
4861 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
4862 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4863 | enum search_domain kind) | |
4864 | { | |
976ca316 | 4865 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 JK |
4866 | |
4867 | /* index_table is NULL if OBJF_READNOW. */ | |
976ca316 | 4868 | if (!per_objfile->per_bfd->index_table) |
927aa2e7 JK |
4869 | return; |
4870 | ||
976ca316 | 4871 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
927aa2e7 | 4872 | |
c1a66c06 TV |
4873 | if (symbol_matcher == NULL && lookup_name == NULL) |
4874 | { | |
976ca316 | 4875 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
4876 | { |
4877 | QUIT; | |
4878 | ||
976ca316 | 4879 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, |
97a1449a | 4880 | file_matcher, expansion_notify); |
c1a66c06 TV |
4881 | } |
4882 | return; | |
4883 | } | |
4884 | ||
976ca316 | 4885 | mapped_index &index = *per_objfile->per_bfd->index_table; |
927aa2e7 | 4886 | |
c1a66c06 | 4887 | dw2_expand_symtabs_matching_symbol (index, *lookup_name, |
927aa2e7 | 4888 | symbol_matcher, |
b64f703b | 4889 | [&] (offset_type idx) |
927aa2e7 | 4890 | { |
976ca316 SM |
4891 | dw2_expand_marked_cus (per_objfile, idx, file_matcher, expansion_notify, |
4892 | kind); | |
3b00ef10 | 4893 | return true; |
976ca316 | 4894 | }, per_objfile); |
927aa2e7 JK |
4895 | } |
4896 | ||
39298a5d TT |
4897 | void |
4898 | dwarf2_gdb_index::expand_symtabs_matching | |
4899 | (struct objfile *objfile, | |
4900 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4901 | const lookup_name_info *lookup_name, | |
4902 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4903 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4904 | enum search_domain kind) | |
4905 | { | |
4906 | dw2_expand_symtabs_matching (objfile, file_matcher, lookup_name, | |
4907 | symbol_matcher, expansion_notify, kind); | |
4908 | } | |
4909 | ||
927aa2e7 JK |
4910 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific |
4911 | symtab. */ | |
4912 | ||
4913 | static struct compunit_symtab * | |
4914 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4915 | CORE_ADDR pc) | |
4916 | { | |
4917 | int i; | |
4918 | ||
4919 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4920 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4921 | return cust; | |
4922 | ||
4923 | if (cust->includes == NULL) | |
4924 | return NULL; | |
4925 | ||
4926 | for (i = 0; cust->includes[i]; ++i) | |
4927 | { | |
4928 | struct compunit_symtab *s = cust->includes[i]; | |
4929 | ||
4930 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4931 | if (s != NULL) | |
4932 | return s; | |
4933 | } | |
4934 | ||
4935 | return NULL; | |
4936 | } | |
4937 | ||
39298a5d TT |
4938 | struct compunit_symtab * |
4939 | dwarf2_base_index_functions::find_pc_sect_compunit_symtab | |
4940 | (struct objfile *objfile, | |
4941 | struct bound_minimal_symbol msymbol, | |
4942 | CORE_ADDR pc, | |
4943 | struct obj_section *section, | |
4944 | int warn_if_readin) | |
927aa2e7 JK |
4945 | { |
4946 | struct dwarf2_per_cu_data *data; | |
4947 | struct compunit_symtab *result; | |
4948 | ||
efd7398e TT |
4949 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
4950 | if (per_objfile->per_bfd->index_addrmap == nullptr) | |
927aa2e7 JK |
4951 | return NULL; |
4952 | ||
b3b3bada | 4953 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
efd7398e TT |
4954 | data = ((struct dwarf2_per_cu_data *) |
4955 | addrmap_find (per_objfile->per_bfd->index_addrmap, | |
4956 | pc - baseaddr)); | |
927aa2e7 JK |
4957 | if (!data) |
4958 | return NULL; | |
4959 | ||
af758d11 | 4960 | if (warn_if_readin && per_objfile->symtab_set_p (data)) |
927aa2e7 | 4961 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
08feed99 | 4962 | paddress (objfile->arch (), pc)); |
927aa2e7 | 4963 | |
97a1449a SM |
4964 | result = recursively_find_pc_sect_compunit_symtab |
4965 | (dw2_instantiate_symtab (data, per_objfile, false), pc); | |
4966 | ||
927aa2e7 JK |
4967 | gdb_assert (result != NULL); |
4968 | return result; | |
4969 | } | |
4970 | ||
39298a5d | 4971 | void |
f4655dee TT |
4972 | dwarf2_base_index_functions::map_symbol_filenames |
4973 | (struct objfile *objfile, | |
4974 | gdb::function_view<symbol_filename_ftype> fun, | |
4975 | bool need_fullname) | |
927aa2e7 | 4976 | { |
976ca316 | 4977 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
927aa2e7 | 4978 | |
976ca316 | 4979 | if (!per_objfile->per_bfd->filenames_cache) |
927aa2e7 | 4980 | { |
976ca316 | 4981 | per_objfile->per_bfd->filenames_cache.emplace (); |
927aa2e7 JK |
4982 | |
4983 | htab_up visited (htab_create_alloc (10, | |
4984 | htab_hash_pointer, htab_eq_pointer, | |
4985 | NULL, xcalloc, xfree)); | |
4986 | ||
4987 | /* The rule is CUs specify all the files, including those used | |
4988 | by any TU, so there's no need to scan TUs here. We can | |
4989 | ignore file names coming from already-expanded CUs. */ | |
4990 | ||
976ca316 | 4991 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4992 | { |
976ca316 | 4993 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4994 | { |
4995 | void **slot = htab_find_slot (visited.get (), | |
4996 | per_cu->v.quick->file_names, | |
4997 | INSERT); | |
4998 | ||
4999 | *slot = per_cu->v.quick->file_names; | |
5000 | } | |
5001 | } | |
5002 | ||
976ca316 | 5003 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 5004 | { |
927aa2e7 | 5005 | /* We only need to look at symtabs not already expanded. */ |
976ca316 | 5006 | if (per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5007 | continue; |
5008 | ||
ab432490 | 5009 | quick_file_names *file_data |
976ca316 | 5010 | = dw2_get_file_names (per_cu, per_objfile); |
927aa2e7 JK |
5011 | if (file_data == NULL) |
5012 | continue; | |
5013 | ||
b76e467d | 5014 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
5015 | if (*slot) |
5016 | { | |
5017 | /* Already visited. */ | |
5018 | continue; | |
5019 | } | |
5020 | *slot = file_data; | |
5021 | ||
5022 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5023 | { | |
5024 | const char *filename = file_data->file_names[j]; | |
976ca316 | 5025 | per_objfile->per_bfd->filenames_cache->seen (filename); |
927aa2e7 JK |
5026 | } |
5027 | } | |
5028 | } | |
5029 | ||
976ca316 | 5030 | per_objfile->per_bfd->filenames_cache->traverse ([&] (const char *filename) |
927aa2e7 JK |
5031 | { |
5032 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5033 | ||
5034 | if (need_fullname) | |
5035 | this_real_name = gdb_realpath (filename); | |
f4655dee | 5036 | fun (filename, this_real_name.get ()); |
927aa2e7 JK |
5037 | }); |
5038 | } | |
5039 | ||
39298a5d TT |
5040 | bool |
5041 | dwarf2_base_index_functions::has_symbols (struct objfile *objfile) | |
927aa2e7 | 5042 | { |
fae2120b | 5043 | return true; |
927aa2e7 JK |
5044 | } |
5045 | ||
927aa2e7 JK |
5046 | /* DWARF-5 debug_names reader. */ |
5047 | ||
5048 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5049 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5050 | ||
5051 | /* A helper function that reads the .debug_names section in SECTION | |
5052 | and fills in MAP. FILENAME is the name of the file containing the | |
5053 | section; it is used for error reporting. | |
5054 | ||
5055 | Returns true if all went well, false otherwise. */ | |
5056 | ||
5057 | static bool | |
5058 | read_debug_names_from_section (struct objfile *objfile, | |
5059 | const char *filename, | |
5060 | struct dwarf2_section_info *section, | |
5061 | mapped_debug_names &map) | |
5062 | { | |
96b79293 | 5063 | if (section->empty ()) |
927aa2e7 JK |
5064 | return false; |
5065 | ||
5066 | /* Older elfutils strip versions could keep the section in the main | |
5067 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5068 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
5069 | return false; |
5070 | ||
96b79293 | 5071 | section->read (objfile); |
927aa2e7 | 5072 | |
08feed99 | 5073 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
5074 | |
5075 | const gdb_byte *addr = section->buffer; | |
5076 | ||
96b79293 | 5077 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
5078 | |
5079 | unsigned int bytes_read; | |
5080 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5081 | addr += bytes_read; | |
5082 | ||
5083 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5084 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5085 | if (bytes_read + length != section->size) | |
5086 | { | |
5087 | /* There may be multiple per-CU indices. */ | |
5088 | warning (_("Section .debug_names in %s length %s does not match " | |
5089 | "section length %s, ignoring .debug_names."), | |
5090 | filename, plongest (bytes_read + length), | |
5091 | pulongest (section->size)); | |
5092 | return false; | |
5093 | } | |
5094 | ||
5095 | /* The version number. */ | |
5096 | uint16_t version = read_2_bytes (abfd, addr); | |
5097 | addr += 2; | |
5098 | if (version != 5) | |
5099 | { | |
5100 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5101 | "ignoring .debug_names."), | |
5102 | filename, version); | |
5103 | return false; | |
5104 | } | |
5105 | ||
5106 | /* Padding. */ | |
5107 | uint16_t padding = read_2_bytes (abfd, addr); | |
5108 | addr += 2; | |
5109 | if (padding != 0) | |
5110 | { | |
5111 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5112 | "ignoring .debug_names."), | |
5113 | filename, padding); | |
5114 | return false; | |
5115 | } | |
5116 | ||
5117 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5118 | map.cu_count = read_4_bytes (abfd, addr); | |
5119 | addr += 4; | |
5120 | ||
5121 | /* local_type_unit_count - The number of TUs in the local TU | |
5122 | list. */ | |
5123 | map.tu_count = read_4_bytes (abfd, addr); | |
5124 | addr += 4; | |
5125 | ||
5126 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5127 | list. */ | |
5128 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5129 | addr += 4; | |
5130 | if (foreign_tu_count != 0) | |
5131 | { | |
5132 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5133 | "ignoring .debug_names."), | |
5134 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5135 | return false; | |
5136 | } | |
5137 | ||
5138 | /* bucket_count - The number of hash buckets in the hash lookup | |
5139 | table. */ | |
5140 | map.bucket_count = read_4_bytes (abfd, addr); | |
5141 | addr += 4; | |
5142 | ||
5143 | /* name_count - The number of unique names in the index. */ | |
5144 | map.name_count = read_4_bytes (abfd, addr); | |
5145 | addr += 4; | |
5146 | ||
5147 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5148 | table. */ | |
5149 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5150 | addr += 4; | |
5151 | ||
5152 | /* augmentation_string_size - The size in bytes of the augmentation | |
5153 | string. This value is rounded up to a multiple of 4. */ | |
5154 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5155 | addr += 4; | |
5156 | map.augmentation_is_gdb = ((augmentation_string_size | |
5157 | == sizeof (dwarf5_augmentation)) | |
5158 | && memcmp (addr, dwarf5_augmentation, | |
5159 | sizeof (dwarf5_augmentation)) == 0); | |
5160 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5161 | addr += augmentation_string_size; | |
5162 | ||
5163 | /* List of CUs */ | |
5164 | map.cu_table_reordered = addr; | |
5165 | addr += map.cu_count * map.offset_size; | |
5166 | ||
5167 | /* List of Local TUs */ | |
5168 | map.tu_table_reordered = addr; | |
5169 | addr += map.tu_count * map.offset_size; | |
5170 | ||
5171 | /* Hash Lookup Table */ | |
5172 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5173 | addr += map.bucket_count * 4; | |
5174 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5175 | addr += map.name_count * 4; | |
5176 | ||
5177 | /* Name Table */ | |
5178 | map.name_table_string_offs_reordered = addr; | |
5179 | addr += map.name_count * map.offset_size; | |
5180 | map.name_table_entry_offs_reordered = addr; | |
5181 | addr += map.name_count * map.offset_size; | |
5182 | ||
5183 | const gdb_byte *abbrev_table_start = addr; | |
5184 | for (;;) | |
5185 | { | |
927aa2e7 JK |
5186 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5187 | addr += bytes_read; | |
5188 | if (index_num == 0) | |
5189 | break; | |
5190 | ||
5191 | const auto insertpair | |
5192 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5193 | if (!insertpair.second) | |
5194 | { | |
5195 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5196 | "ignoring .debug_names."), | |
5197 | filename, pulongest (index_num)); | |
5198 | return false; | |
5199 | } | |
5200 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5201 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5202 | addr += bytes_read; | |
5203 | ||
5204 | for (;;) | |
5205 | { | |
5206 | mapped_debug_names::index_val::attr attr; | |
5207 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5208 | addr += bytes_read; | |
5209 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5210 | addr += bytes_read; | |
5211 | if (attr.form == DW_FORM_implicit_const) | |
5212 | { | |
5213 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5214 | &bytes_read); | |
5215 | addr += bytes_read; | |
5216 | } | |
5217 | if (attr.dw_idx == 0 && attr.form == 0) | |
5218 | break; | |
5219 | indexval.attr_vec.push_back (std::move (attr)); | |
5220 | } | |
5221 | } | |
5222 | if (addr != abbrev_table_start + abbrev_table_size) | |
5223 | { | |
5224 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5225 | "of size %s vs. written as %u, ignoring .debug_names."), |
5226 | filename, plongest (addr - abbrev_table_start), | |
5227 | abbrev_table_size); | |
927aa2e7 JK |
5228 | return false; |
5229 | } | |
5230 | map.entry_pool = addr; | |
5231 | ||
5232 | return true; | |
5233 | } | |
5234 | ||
5235 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5236 | list. */ | |
5237 | ||
5238 | static void | |
168c9250 | 5239 | create_cus_from_debug_names_list (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5240 | const mapped_debug_names &map, |
5241 | dwarf2_section_info §ion, | |
b76e467d | 5242 | bool is_dwz) |
927aa2e7 | 5243 | { |
3ee6bb11 TV |
5244 | if (!map.augmentation_is_gdb) |
5245 | { | |
fc9a13fb TV |
5246 | for (uint32_t i = 0; i < map.cu_count; ++i) |
5247 | { | |
5248 | sect_offset sect_off | |
5249 | = (sect_offset) (extract_unsigned_integer | |
5250 | (map.cu_table_reordered + i * map.offset_size, | |
5251 | map.offset_size, | |
5252 | map.dwarf5_byte_order)); | |
5253 | /* We don't know the length of the CU, because the CU list in a | |
5254 | .debug_names index can be incomplete, so we can't use the start | |
5255 | of the next CU as end of this CU. We create the CUs here with | |
5256 | length 0, and in cutu_reader::cutu_reader we'll fill in the | |
5257 | actual length. */ | |
5258 | dwarf2_per_cu_data *per_cu | |
5259 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, | |
5260 | sect_off, 0); | |
5261 | per_bfd->all_comp_units.push_back (per_cu); | |
5262 | } | |
d3b54e63 | 5263 | return; |
3ee6bb11 TV |
5264 | } |
5265 | ||
927aa2e7 JK |
5266 | sect_offset sect_off_prev; |
5267 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5268 | { | |
5269 | sect_offset sect_off_next; | |
5270 | if (i < map.cu_count) | |
5271 | { | |
5272 | sect_off_next | |
5273 | = (sect_offset) (extract_unsigned_integer | |
5274 | (map.cu_table_reordered + i * map.offset_size, | |
5275 | map.offset_size, | |
5276 | map.dwarf5_byte_order)); | |
5277 | } | |
5278 | else | |
5279 | sect_off_next = (sect_offset) section.size; | |
5280 | if (i >= 1) | |
5281 | { | |
5282 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5283 | dwarf2_per_cu_data *per_cu |
168c9250 | 5284 | = create_cu_from_index_list (per_bfd, §ion, is_dwz, |
927aa2e7 | 5285 | sect_off_prev, length); |
168c9250 | 5286 | per_bfd->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5287 | } |
5288 | sect_off_prev = sect_off_next; | |
5289 | } | |
5290 | } | |
5291 | ||
5292 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5293 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5294 | |
5295 | static void | |
168c9250 | 5296 | create_cus_from_debug_names (dwarf2_per_bfd *per_bfd, |
927aa2e7 JK |
5297 | const mapped_debug_names &map, |
5298 | const mapped_debug_names &dwz_map) | |
5299 | { | |
168c9250 SM |
5300 | gdb_assert (per_bfd->all_comp_units.empty ()); |
5301 | per_bfd->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5302 | |
168c9250 | 5303 | create_cus_from_debug_names_list (per_bfd, map, per_bfd->info, |
b76e467d | 5304 | false /* is_dwz */); |
927aa2e7 JK |
5305 | |
5306 | if (dwz_map.cu_count == 0) | |
5307 | return; | |
5308 | ||
168c9250 SM |
5309 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
5310 | create_cus_from_debug_names_list (per_bfd, dwz_map, dwz->info, | |
b76e467d | 5311 | true /* is_dwz */); |
927aa2e7 JK |
5312 | } |
5313 | ||
5314 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5315 | elements of all the CUs and return true. Otherwise, return false. */ | |
5316 | ||
5317 | static bool | |
976ca316 | 5318 | dwarf2_read_debug_names (dwarf2_per_objfile *per_objfile) |
927aa2e7 | 5319 | { |
fcf23d5b SM |
5320 | std::unique_ptr<mapped_debug_names> map (new mapped_debug_names); |
5321 | mapped_debug_names dwz_map; | |
976ca316 | 5322 | struct objfile *objfile = per_objfile->objfile; |
f8c41851 | 5323 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
927aa2e7 JK |
5324 | |
5325 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
bab287cd | 5326 | &per_bfd->debug_names, *map)) |
927aa2e7 JK |
5327 | return false; |
5328 | ||
5329 | /* Don't use the index if it's empty. */ | |
22ca247e | 5330 | if (map->name_count == 0) |
927aa2e7 JK |
5331 | return false; |
5332 | ||
5333 | /* If there is a .dwz file, read it so we can get its CU list as | |
5334 | well. */ | |
f8c41851 | 5335 | dwz_file *dwz = dwarf2_get_dwz_file (per_bfd); |
927aa2e7 JK |
5336 | if (dwz != NULL) |
5337 | { | |
5338 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5339 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5340 | &dwz->debug_names, dwz_map)) |
5341 | { | |
5342 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5343 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5344 | return false; |
5345 | } | |
5346 | } | |
5347 | ||
f8c41851 | 5348 | create_cus_from_debug_names (per_bfd, *map, dwz_map); |
927aa2e7 | 5349 | |
22ca247e | 5350 | if (map->tu_count != 0) |
927aa2e7 JK |
5351 | { |
5352 | /* We can only handle a single .debug_types when we have an | |
5353 | index. */ | |
f8c41851 | 5354 | if (per_bfd->types.size () != 1) |
927aa2e7 JK |
5355 | return false; |
5356 | ||
f8c41851 | 5357 | dwarf2_section_info *section = &per_bfd->types[0]; |
927aa2e7 JK |
5358 | |
5359 | create_signatured_type_table_from_debug_names | |
f8c41851 | 5360 | (per_objfile, *map, section, &per_bfd->abbrev); |
927aa2e7 JK |
5361 | } |
5362 | ||
f8c41851 | 5363 | create_addrmap_from_aranges (per_objfile, &per_bfd->debug_aranges); |
927aa2e7 | 5364 | |
f8c41851 SM |
5365 | per_bfd->debug_names_table = std::move (map); |
5366 | per_bfd->using_index = 1; | |
5367 | per_bfd->quick_file_names_table = | |
bab287cd | 5368 | create_quick_file_names_table (per_bfd->all_comp_units.size ()); |
927aa2e7 JK |
5369 | |
5370 | return true; | |
5371 | } | |
5372 | ||
927aa2e7 JK |
5373 | /* Type used to manage iterating over all CUs looking for a symbol for |
5374 | .debug_names. */ | |
5375 | ||
5376 | class dw2_debug_names_iterator | |
5377 | { | |
5378 | public: | |
927aa2e7 | 5379 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5380 | gdb::optional<block_enum> block_index, |
5381 | domain_enum domain, | |
fcf23d5b | 5382 | const char *name, dwarf2_per_objfile *per_objfile) |
2b79f376 | 5383 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5384 | m_addr (find_vec_in_debug_names (map, name, per_objfile)), |
5385 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5386 | {} |
5387 | ||
5388 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
fcf23d5b | 5389 | search_domain search, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5390 | : m_map (map), |
5391 | m_search (search), | |
fcf23d5b SM |
5392 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5393 | m_per_objfile (per_objfile) | |
927aa2e7 JK |
5394 | {} |
5395 | ||
3b00ef10 TT |
5396 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5397 | block_enum block_index, domain_enum domain, | |
fcf23d5b | 5398 | uint32_t namei, dwarf2_per_objfile *per_objfile) |
3b00ef10 | 5399 | : m_map (map), m_block_index (block_index), m_domain (domain), |
fcf23d5b SM |
5400 | m_addr (find_vec_in_debug_names (map, namei, per_objfile)), |
5401 | m_per_objfile (per_objfile) | |
3b00ef10 TT |
5402 | {} |
5403 | ||
927aa2e7 JK |
5404 | /* Return the next matching CU or NULL if there are no more. */ |
5405 | dwarf2_per_cu_data *next (); | |
5406 | ||
5407 | private: | |
5408 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
976ca316 SM |
5409 | const char *name, |
5410 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 | 5411 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, |
976ca316 SM |
5412 | uint32_t namei, |
5413 | dwarf2_per_objfile *per_objfile); | |
927aa2e7 JK |
5414 | |
5415 | /* The internalized form of .debug_names. */ | |
5416 | const mapped_debug_names &m_map; | |
5417 | ||
2b79f376 SM |
5418 | /* If set, only look for symbols that match that block. Valid values are |
5419 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5420 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5421 | |
5422 | /* The kind of symbol we're looking for. */ | |
5423 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5424 | const search_domain m_search = ALL_DOMAIN; | |
5425 | ||
5426 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5427 | not found. */ | |
5428 | const gdb_byte *m_addr; | |
fcf23d5b SM |
5429 | |
5430 | dwarf2_per_objfile *m_per_objfile; | |
927aa2e7 JK |
5431 | }; |
5432 | ||
5433 | const char * | |
fcf23d5b | 5434 | mapped_debug_names::namei_to_name |
976ca316 | 5435 | (uint32_t namei, dwarf2_per_objfile *per_objfile) const |
927aa2e7 JK |
5436 | { |
5437 | const ULONGEST namei_string_offs | |
5438 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5439 | + namei * offset_size), | |
5440 | offset_size, | |
5441 | dwarf5_byte_order); | |
976ca316 | 5442 | return read_indirect_string_at_offset (per_objfile, namei_string_offs); |
927aa2e7 JK |
5443 | } |
5444 | ||
5445 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5446 | found, return pointer to its pool data. If NAME cannot be found, | |
5447 | return NULL. */ | |
5448 | ||
5449 | const gdb_byte * | |
5450 | dw2_debug_names_iterator::find_vec_in_debug_names | |
976ca316 SM |
5451 | (const mapped_debug_names &map, const char *name, |
5452 | dwarf2_per_objfile *per_objfile) | |
927aa2e7 JK |
5453 | { |
5454 | int (*cmp) (const char *, const char *); | |
5455 | ||
54ee4252 | 5456 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5457 | if (current_language->la_language == language_cplus |
5458 | || current_language->la_language == language_fortran | |
5459 | || current_language->la_language == language_d) | |
5460 | { | |
5461 | /* NAME is already canonical. Drop any qualifiers as | |
5462 | .debug_names does not contain any. */ | |
5463 | ||
5464 | if (strchr (name, '(') != NULL) | |
5465 | { | |
54ee4252 | 5466 | without_params = cp_remove_params (name); |
927aa2e7 | 5467 | if (without_params != NULL) |
54ee4252 | 5468 | name = without_params.get (); |
927aa2e7 JK |
5469 | } |
5470 | } | |
5471 | ||
5472 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5473 | ||
5474 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5475 | uint32_t namei | |
5476 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5477 | (map.bucket_table_reordered | |
5478 | + (full_hash % map.bucket_count)), 4, | |
5479 | map.dwarf5_byte_order); | |
5480 | if (namei == 0) | |
5481 | return NULL; | |
5482 | --namei; | |
5483 | if (namei >= map.name_count) | |
5484 | { | |
b98664d3 | 5485 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5486 | "[in module %s]"), |
5487 | namei, map.name_count, | |
fcf23d5b | 5488 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5489 | return NULL; |
5490 | } | |
5491 | ||
5492 | for (;;) | |
5493 | { | |
5494 | const uint32_t namei_full_hash | |
5495 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5496 | (map.hash_table_reordered + namei), 4, | |
5497 | map.dwarf5_byte_order); | |
5498 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5499 | return NULL; | |
5500 | ||
5501 | if (full_hash == namei_full_hash) | |
5502 | { | |
fcf23d5b | 5503 | const char *const namei_string = map.namei_to_name (namei, per_objfile); |
927aa2e7 JK |
5504 | |
5505 | #if 0 /* An expensive sanity check. */ | |
5506 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5507 | { | |
b98664d3 | 5508 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5509 | "[in module %s]"), |
5510 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5511 | return NULL; | |
5512 | } | |
5513 | #endif | |
5514 | ||
5515 | if (cmp (namei_string, name) == 0) | |
5516 | { | |
5517 | const ULONGEST namei_entry_offs | |
5518 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5519 | + namei * map.offset_size), | |
5520 | map.offset_size, map.dwarf5_byte_order); | |
5521 | return map.entry_pool + namei_entry_offs; | |
5522 | } | |
5523 | } | |
5524 | ||
5525 | ++namei; | |
5526 | if (namei >= map.name_count) | |
5527 | return NULL; | |
5528 | } | |
5529 | } | |
5530 | ||
5531 | const gdb_byte * | |
5532 | dw2_debug_names_iterator::find_vec_in_debug_names | |
fcf23d5b | 5533 | (const mapped_debug_names &map, uint32_t namei, dwarf2_per_objfile *per_objfile) |
927aa2e7 JK |
5534 | { |
5535 | if (namei >= map.name_count) | |
5536 | { | |
b98664d3 | 5537 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5538 | "[in module %s]"), |
5539 | namei, map.name_count, | |
fcf23d5b | 5540 | objfile_name (per_objfile->objfile)); |
927aa2e7 JK |
5541 | return NULL; |
5542 | } | |
5543 | ||
5544 | const ULONGEST namei_entry_offs | |
5545 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5546 | + namei * map.offset_size), | |
5547 | map.offset_size, map.dwarf5_byte_order); | |
5548 | return map.entry_pool + namei_entry_offs; | |
5549 | } | |
5550 | ||
5551 | /* See dw2_debug_names_iterator. */ | |
5552 | ||
5553 | dwarf2_per_cu_data * | |
5554 | dw2_debug_names_iterator::next () | |
5555 | { | |
5556 | if (m_addr == NULL) | |
5557 | return NULL; | |
5558 | ||
fcf23d5b SM |
5559 | dwarf2_per_bfd *per_bfd = m_per_objfile->per_bfd; |
5560 | struct objfile *objfile = m_per_objfile->objfile; | |
ed2dc618 | 5561 | bfd *const abfd = objfile->obfd; |
927aa2e7 JK |
5562 | |
5563 | again: | |
5564 | ||
5565 | unsigned int bytes_read; | |
5566 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5567 | m_addr += bytes_read; | |
5568 | if (abbrev == 0) | |
5569 | return NULL; | |
5570 | ||
5571 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5572 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5573 | { | |
b98664d3 | 5574 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5575 | "[in module %s]"), |
ed2dc618 | 5576 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5577 | return NULL; |
5578 | } | |
5579 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5580 | enum class symbol_linkage { |
5581 | unknown, | |
5582 | static_, | |
5583 | extern_, | |
23c13d42 | 5584 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5585 | dwarf2_per_cu_data *per_cu = NULL; |
5586 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5587 | { | |
5588 | ULONGEST ull; | |
5589 | switch (attr.form) | |
5590 | { | |
5591 | case DW_FORM_implicit_const: | |
5592 | ull = attr.implicit_const; | |
5593 | break; | |
5594 | case DW_FORM_flag_present: | |
5595 | ull = 1; | |
5596 | break; | |
5597 | case DW_FORM_udata: | |
5598 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5599 | m_addr += bytes_read; | |
5600 | break; | |
6dc55ce9 | 5601 | case DW_FORM_ref4: |
5602 | ull = read_4_bytes (abfd, m_addr); | |
5603 | m_addr += 4; | |
5604 | break; | |
5605 | case DW_FORM_ref8: | |
5606 | ull = read_8_bytes (abfd, m_addr); | |
5607 | m_addr += 8; | |
5608 | break; | |
5609 | case DW_FORM_ref_sig8: | |
5610 | ull = read_8_bytes (abfd, m_addr); | |
5611 | m_addr += 8; | |
5612 | break; | |
927aa2e7 | 5613 | default: |
b98664d3 | 5614 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5615 | dwarf_form_name (attr.form), |
ed2dc618 | 5616 | objfile_name (objfile)); |
927aa2e7 JK |
5617 | return NULL; |
5618 | } | |
5619 | switch (attr.dw_idx) | |
5620 | { | |
5621 | case DW_IDX_compile_unit: | |
5622 | /* Don't crash on bad data. */ | |
bab287cd | 5623 | if (ull >= per_bfd->all_comp_units.size ()) |
927aa2e7 | 5624 | { |
b98664d3 | 5625 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5626 | " [in module %s]"), |
5627 | pulongest (ull), | |
fcf23d5b | 5628 | objfile_name (objfile)); |
927aa2e7 JK |
5629 | continue; |
5630 | } | |
fcf23d5b | 5631 | per_cu = per_bfd->get_cutu (ull); |
927aa2e7 | 5632 | break; |
8af5c486 JK |
5633 | case DW_IDX_type_unit: |
5634 | /* Don't crash on bad data. */ | |
fcf23d5b | 5635 | if (ull >= per_bfd->all_type_units.size ()) |
8af5c486 | 5636 | { |
b98664d3 | 5637 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5638 | " [in module %s]"), |
5639 | pulongest (ull), | |
fcf23d5b | 5640 | objfile_name (objfile)); |
8af5c486 JK |
5641 | continue; |
5642 | } | |
fcf23d5b | 5643 | per_cu = &per_bfd->get_tu (ull)->per_cu; |
8af5c486 | 5644 | break; |
6dc55ce9 | 5645 | case DW_IDX_die_offset: |
5646 | /* In a per-CU index (as opposed to a per-module index), index | |
5647 | entries without CU attribute implicitly refer to the single CU. */ | |
5648 | if (per_cu == NULL) | |
fcf23d5b | 5649 | per_cu = per_bfd->get_cu (0); |
6dc55ce9 | 5650 | break; |
927aa2e7 JK |
5651 | case DW_IDX_GNU_internal: |
5652 | if (!m_map.augmentation_is_gdb) | |
5653 | break; | |
23c13d42 | 5654 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5655 | break; |
5656 | case DW_IDX_GNU_external: | |
5657 | if (!m_map.augmentation_is_gdb) | |
5658 | break; | |
23c13d42 | 5659 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5660 | break; |
5661 | } | |
5662 | } | |
5663 | ||
5664 | /* Skip if already read in. */ | |
fcf23d5b | 5665 | if (m_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5666 | goto again; |
5667 | ||
5668 | /* Check static vs global. */ | |
23c13d42 | 5669 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5670 | { |
2b79f376 | 5671 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5672 | const bool symbol_is_static = |
5673 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5674 | if (want_static != symbol_is_static) |
2b79f376 | 5675 | goto again; |
927aa2e7 JK |
5676 | } |
5677 | ||
5678 | /* Match dw2_symtab_iter_next, symbol_kind | |
5679 | and debug_names::psymbol_tag. */ | |
5680 | switch (m_domain) | |
5681 | { | |
5682 | case VAR_DOMAIN: | |
5683 | switch (indexval.dwarf_tag) | |
5684 | { | |
5685 | case DW_TAG_variable: | |
5686 | case DW_TAG_subprogram: | |
5687 | /* Some types are also in VAR_DOMAIN. */ | |
5688 | case DW_TAG_typedef: | |
5689 | case DW_TAG_structure_type: | |
5690 | break; | |
5691 | default: | |
5692 | goto again; | |
5693 | } | |
5694 | break; | |
5695 | case STRUCT_DOMAIN: | |
5696 | switch (indexval.dwarf_tag) | |
5697 | { | |
5698 | case DW_TAG_typedef: | |
5699 | case DW_TAG_structure_type: | |
5700 | break; | |
5701 | default: | |
5702 | goto again; | |
5703 | } | |
5704 | break; | |
5705 | case LABEL_DOMAIN: | |
5706 | switch (indexval.dwarf_tag) | |
5707 | { | |
5708 | case 0: | |
5709 | case DW_TAG_variable: | |
5710 | break; | |
5711 | default: | |
5712 | goto again; | |
5713 | } | |
5714 | break; | |
59c35742 AB |
5715 | case MODULE_DOMAIN: |
5716 | switch (indexval.dwarf_tag) | |
5717 | { | |
5718 | case DW_TAG_module: | |
5719 | break; | |
5720 | default: | |
5721 | goto again; | |
5722 | } | |
5723 | break; | |
927aa2e7 JK |
5724 | default: |
5725 | break; | |
5726 | } | |
5727 | ||
5728 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5729 | debug_names::psymbol_tag. */ | |
5730 | switch (m_search) | |
4b514bc8 | 5731 | { |
927aa2e7 JK |
5732 | case VARIABLES_DOMAIN: |
5733 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5734 | { |
927aa2e7 JK |
5735 | case DW_TAG_variable: |
5736 | break; | |
5737 | default: | |
5738 | goto again; | |
4b514bc8 | 5739 | } |
927aa2e7 JK |
5740 | break; |
5741 | case FUNCTIONS_DOMAIN: | |
5742 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5743 | { |
927aa2e7 JK |
5744 | case DW_TAG_subprogram: |
5745 | break; | |
5746 | default: | |
5747 | goto again; | |
4b514bc8 | 5748 | } |
927aa2e7 JK |
5749 | break; |
5750 | case TYPES_DOMAIN: | |
5751 | switch (indexval.dwarf_tag) | |
5752 | { | |
5753 | case DW_TAG_typedef: | |
5754 | case DW_TAG_structure_type: | |
5755 | break; | |
5756 | default: | |
5757 | goto again; | |
5758 | } | |
5759 | break; | |
59c35742 AB |
5760 | case MODULES_DOMAIN: |
5761 | switch (indexval.dwarf_tag) | |
5762 | { | |
5763 | case DW_TAG_module: | |
5764 | break; | |
5765 | default: | |
5766 | goto again; | |
5767 | } | |
927aa2e7 JK |
5768 | default: |
5769 | break; | |
4b514bc8 | 5770 | } |
927aa2e7 JK |
5771 | |
5772 | return per_cu; | |
4b514bc8 | 5773 | } |
61920122 | 5774 | |
39298a5d TT |
5775 | struct compunit_symtab * |
5776 | dwarf2_debug_names_index::lookup_symbol | |
5777 | (struct objfile *objfile, block_enum block_index, | |
5778 | const char *name, domain_enum domain) | |
4b514bc8 | 5779 | { |
976ca316 | 5780 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
61920122 | 5781 | |
976ca316 | 5782 | const auto &mapp = per_objfile->per_bfd->debug_names_table; |
927aa2e7 | 5783 | if (!mapp) |
61920122 | 5784 | { |
927aa2e7 JK |
5785 | /* index is NULL if OBJF_READNOW. */ |
5786 | return NULL; | |
5787 | } | |
5788 | const auto &map = *mapp; | |
9291a0cd | 5789 | |
976ca316 | 5790 | dw2_debug_names_iterator iter (map, block_index, domain, name, per_objfile); |
9703b513 | 5791 | |
927aa2e7 JK |
5792 | struct compunit_symtab *stab_best = NULL; |
5793 | struct dwarf2_per_cu_data *per_cu; | |
5794 | while ((per_cu = iter.next ()) != NULL) | |
5795 | { | |
5796 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a | 5797 | compunit_symtab *stab |
976ca316 | 5798 | = dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 | 5799 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5800 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5801 | |
927aa2e7 JK |
5802 | sym = block_find_symbol (block, name, domain, |
5803 | block_find_non_opaque_type_preferred, | |
5804 | &with_opaque); | |
9703b513 | 5805 | |
927aa2e7 JK |
5806 | /* Some caution must be observed with overloaded functions and |
5807 | methods, since the index will not contain any overload | |
5808 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5809 | |
927aa2e7 | 5810 | if (sym != NULL |
987012b8 | 5811 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5812 | return stab; |
5813 | if (with_opaque != NULL | |
987012b8 | 5814 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5815 | stab_best = stab; |
9703b513 | 5816 | |
927aa2e7 | 5817 | /* Keep looking through other CUs. */ |
9703b513 TT |
5818 | } |
5819 | ||
927aa2e7 | 5820 | return stab_best; |
9703b513 TT |
5821 | } |
5822 | ||
927aa2e7 JK |
5823 | /* This dumps minimal information about .debug_names. It is called |
5824 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5825 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5826 | |
39298a5d TT |
5827 | void |
5828 | dwarf2_debug_names_index::dump (struct objfile *objfile) | |
927aa2e7 | 5829 | { |
976ca316 | 5830 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 5831 | |
976ca316 | 5832 | gdb_assert (per_objfile->per_bfd->using_index); |
927aa2e7 | 5833 | printf_filtered (".debug_names:"); |
976ca316 | 5834 | if (per_objfile->per_bfd->debug_names_table) |
927aa2e7 JK |
5835 | printf_filtered (" exists\n"); |
5836 | else | |
5837 | printf_filtered (" faked for \"readnow\"\n"); | |
5838 | printf_filtered ("\n"); | |
9291a0cd TT |
5839 | } |
5840 | ||
39298a5d TT |
5841 | void |
5842 | dwarf2_debug_names_index::expand_symtabs_for_function | |
5843 | (struct objfile *objfile, const char *func_name) | |
9291a0cd | 5844 | { |
976ca316 | 5845 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ae2de4f8 | 5846 | |
976ca316 SM |
5847 | /* per_objfile->per_bfd->debug_names_table is NULL if OBJF_READNOW. */ |
5848 | if (per_objfile->per_bfd->debug_names_table) | |
24c79950 | 5849 | { |
976ca316 | 5850 | const mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
24c79950 | 5851 | |
fcf23d5b | 5852 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name, |
976ca316 | 5853 | per_objfile); |
24c79950 | 5854 | |
927aa2e7 JK |
5855 | struct dwarf2_per_cu_data *per_cu; |
5856 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5857 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
927aa2e7 JK |
5858 | } |
5859 | } | |
24c79950 | 5860 | |
39298a5d TT |
5861 | void |
5862 | dwarf2_debug_names_index::map_matching_symbols | |
3b00ef10 TT |
5863 | (struct objfile *objfile, |
5864 | const lookup_name_info &name, domain_enum domain, | |
5865 | int global, | |
5866 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5867 | symbol_compare_ftype *ordered_compare) | |
5868 | { | |
976ca316 | 5869 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3b00ef10 TT |
5870 | |
5871 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
976ca316 | 5872 | if (!per_objfile->per_bfd->debug_names_table) |
3b00ef10 TT |
5873 | return; |
5874 | ||
976ca316 | 5875 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
3b00ef10 TT |
5876 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
5877 | ||
5878 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5879 | auto matcher = [&] (const char *symname) | |
5880 | { | |
5881 | if (ordered_compare == nullptr) | |
5882 | return true; | |
5883 | return ordered_compare (symname, match_name) == 0; | |
5884 | }; | |
5885 | ||
b64f703b | 5886 | dw2_expand_symtabs_matching_symbol (map, name, matcher, |
3b00ef10 TT |
5887 | [&] (offset_type namei) |
5888 | { | |
5889 | /* The name was matched, now expand corresponding CUs that were | |
5890 | marked. */ | |
fcf23d5b | 5891 | dw2_debug_names_iterator iter (map, block_kind, domain, namei, |
976ca316 | 5892 | per_objfile); |
3b00ef10 TT |
5893 | |
5894 | struct dwarf2_per_cu_data *per_cu; | |
5895 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 | 5896 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, nullptr, |
97a1449a | 5897 | nullptr); |
3b00ef10 | 5898 | return true; |
976ca316 | 5899 | }, per_objfile); |
3b00ef10 TT |
5900 | |
5901 | /* It's a shame we couldn't do this inside the | |
5902 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5903 | that have already been expanded. Instead, this loop matches what | |
5904 | the psymtab code does. */ | |
976ca316 | 5905 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
3b00ef10 | 5906 | { |
976ca316 | 5907 | compunit_symtab *symtab = per_objfile->get_symtab (per_cu); |
af758d11 | 5908 | if (symtab != nullptr) |
3b00ef10 TT |
5909 | { |
5910 | const struct block *block | |
af758d11 | 5911 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (symtab), block_kind); |
3b00ef10 TT |
5912 | if (!iterate_over_symbols_terminated (block, name, |
5913 | domain, callback)) | |
5914 | break; | |
5915 | } | |
5916 | } | |
5917 | } | |
5918 | ||
39298a5d TT |
5919 | void |
5920 | dwarf2_debug_names_index::expand_symtabs_matching | |
927aa2e7 JK |
5921 | (struct objfile *objfile, |
5922 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 5923 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
5924 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
5925 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5926 | enum search_domain kind) | |
5927 | { | |
976ca316 | 5928 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9291a0cd | 5929 | |
927aa2e7 | 5930 | /* debug_names_table is NULL if OBJF_READNOW. */ |
976ca316 | 5931 | if (!per_objfile->per_bfd->debug_names_table) |
927aa2e7 | 5932 | return; |
9291a0cd | 5933 | |
976ca316 | 5934 | dw_expand_symtabs_matching_file_matcher (per_objfile, file_matcher); |
24c79950 | 5935 | |
c1a66c06 TV |
5936 | if (symbol_matcher == NULL && lookup_name == NULL) |
5937 | { | |
976ca316 | 5938 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
5939 | { |
5940 | QUIT; | |
5941 | ||
976ca316 SM |
5942 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
5943 | expansion_notify); | |
c1a66c06 TV |
5944 | } |
5945 | return; | |
5946 | } | |
5947 | ||
976ca316 | 5948 | mapped_debug_names &map = *per_objfile->per_bfd->debug_names_table; |
bbf2f4df | 5949 | |
c1a66c06 | 5950 | dw2_expand_symtabs_matching_symbol (map, *lookup_name, |
44ed8f3e | 5951 | symbol_matcher, |
b64f703b | 5952 | [&] (offset_type namei) |
927aa2e7 | 5953 | { |
927aa2e7 JK |
5954 | /* The name was matched, now expand corresponding CUs that were |
5955 | marked. */ | |
976ca316 | 5956 | dw2_debug_names_iterator iter (map, kind, namei, per_objfile); |
bbf2f4df | 5957 | |
927aa2e7 JK |
5958 | struct dwarf2_per_cu_data *per_cu; |
5959 | while ((per_cu = iter.next ()) != NULL) | |
976ca316 SM |
5960 | dw2_expand_symtabs_matching_one (per_cu, per_objfile, file_matcher, |
5961 | expansion_notify); | |
3b00ef10 | 5962 | return true; |
976ca316 | 5963 | }, per_objfile); |
9291a0cd TT |
5964 | } |
5965 | ||
4485a1c1 | 5966 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5989a64e | 5967 | to either a dwarf2_per_bfd or dwz_file object. */ |
4485a1c1 SM |
5968 | |
5969 | template <typename T> | |
5970 | static gdb::array_view<const gdb_byte> | |
5971 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5972 | { | |
5973 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5974 | ||
96b79293 | 5975 | if (section->empty ()) |
4485a1c1 SM |
5976 | return {}; |
5977 | ||
5978 | /* Older elfutils strip versions could keep the section in the main | |
5979 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5980 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5981 | return {}; |
5982 | ||
96b79293 | 5983 | section->read (obj); |
4485a1c1 | 5984 | |
8bebfcda PA |
5985 | /* dwarf2_section_info::size is a bfd_size_type, while |
5986 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5987 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5988 | is 32-bit. So we need an explicit narrowing conversion here. | |
5989 | This is fine, because it's impossible to allocate or mmap an | |
5990 | array/buffer larger than what size_t can represent. */ | |
5991 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5992 | } |
5993 | ||
87d6a7aa SM |
5994 | /* Lookup the index cache for the contents of the index associated to |
5995 | DWARF2_OBJ. */ | |
5996 | ||
5997 | static gdb::array_view<const gdb_byte> | |
5989a64e | 5998 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd) |
87d6a7aa SM |
5999 | { |
6000 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
6001 | if (build_id == nullptr) | |
6002 | return {}; | |
6003 | ||
6004 | return global_index_cache.lookup_gdb_index (build_id, | |
5989a64e | 6005 | &dwarf2_per_bfd->index_cache_res); |
87d6a7aa SM |
6006 | } |
6007 | ||
6008 | /* Same as the above, but for DWZ. */ | |
6009 | ||
6010 | static gdb::array_view<const gdb_byte> | |
6011 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
6012 | { | |
6013 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
6014 | if (build_id == nullptr) | |
6015 | return {}; | |
6016 | ||
6017 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
6018 | } | |
6019 | ||
edc02ceb | 6020 | /* See dwarf2/public.h. */ |
9291a0cd | 6021 | |
edc02ceb TT |
6022 | void |
6023 | dwarf2_initialize_objfile (struct objfile *objfile) | |
9291a0cd | 6024 | { |
976ca316 SM |
6025 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6026 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
ed2dc618 | 6027 | |
850ed749 SM |
6028 | dwarf_read_debug_printf ("called"); |
6029 | ||
9291a0cd TT |
6030 | /* If we're about to read full symbols, don't bother with the |
6031 | indices. In this case we also don't care if some other debug | |
6032 | format is making psymtabs, because they are all about to be | |
6033 | expanded anyway. */ | |
6034 | if ((objfile->flags & OBJF_READNOW)) | |
6035 | { | |
850ed749 SM |
6036 | dwarf_read_debug_printf ("readnow requested"); |
6037 | ||
17ee85fc TT |
6038 | /* When using READNOW, the using_index flag (set below) indicates that |
6039 | PER_BFD was already initialized, when we loaded some other objfile. */ | |
6040 | if (per_bfd->using_index) | |
6041 | { | |
850ed749 | 6042 | dwarf_read_debug_printf ("using_index already set"); |
976ca316 | 6043 | per_objfile->resize_symtabs (); |
edc02ceb TT |
6044 | objfile->qf.push_front (make_dwarf_gdb_index ()); |
6045 | return; | |
17ee85fc TT |
6046 | } |
6047 | ||
6048 | per_bfd->using_index = 1; | |
976ca316 SM |
6049 | create_all_comp_units (per_objfile); |
6050 | create_all_type_units (per_objfile); | |
17ee85fc TT |
6051 | per_bfd->quick_file_names_table |
6052 | = create_quick_file_names_table (per_bfd->all_comp_units.size ()); | |
976ca316 | 6053 | per_objfile->resize_symtabs (); |
9291a0cd | 6054 | |
17ee85fc TT |
6055 | for (int i = 0; i < (per_bfd->all_comp_units.size () |
6056 | + per_bfd->all_type_units.size ()); ++i) | |
9291a0cd | 6057 | { |
17ee85fc | 6058 | dwarf2_per_cu_data *per_cu = per_bfd->get_cutu (i); |
9291a0cd | 6059 | |
17ee85fc | 6060 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
e254ef6a | 6061 | struct dwarf2_per_cu_quick_data); |
9291a0cd TT |
6062 | } |
6063 | ||
edc02ceb TT |
6064 | /* Arrange for gdb to see the "quick" functions. However, these |
6065 | functions will be no-ops because we will have expanded all | |
6066 | symtabs. */ | |
6067 | objfile->qf.push_front (make_dwarf_gdb_index ()); | |
6068 | return; | |
9291a0cd TT |
6069 | } |
6070 | ||
17ee85fc TT |
6071 | /* Was a debug names index already read when we processed an objfile sharing |
6072 | PER_BFD? */ | |
6073 | if (per_bfd->debug_names_table != nullptr) | |
6074 | { | |
850ed749 | 6075 | dwarf_read_debug_printf ("re-using shared debug names table"); |
976ca316 | 6076 | per_objfile->resize_symtabs (); |
edc02ceb TT |
6077 | objfile->qf.push_front (make_dwarf_debug_names ()); |
6078 | return; | |
17ee85fc TT |
6079 | } |
6080 | ||
6081 | /* Was a GDB index already read when we processed an objfile sharing | |
6082 | PER_BFD? */ | |
6083 | if (per_bfd->index_table != nullptr) | |
6084 | { | |
850ed749 | 6085 | dwarf_read_debug_printf ("re-using shared index table"); |
976ca316 | 6086 | per_objfile->resize_symtabs (); |
edc02ceb TT |
6087 | objfile->qf.push_front (make_dwarf_gdb_index ()); |
6088 | return; | |
17ee85fc TT |
6089 | } |
6090 | ||
efb763a5 SM |
6091 | /* There might already be partial symtabs built for this BFD. This happens |
6092 | when loading the same binary twice with the index-cache enabled. If so, | |
6093 | don't try to read an index. The objfile / per_objfile initialization will | |
6094 | be completed in dwarf2_build_psymtabs, in the standard partial symtabs | |
6095 | code path. */ | |
6096 | if (per_bfd->partial_symtabs != nullptr) | |
850ed749 SM |
6097 | { |
6098 | dwarf_read_debug_printf ("re-using shared partial symtabs"); | |
edc02ceb TT |
6099 | objfile->qf.push_front (make_lazy_dwarf_reader ()); |
6100 | return; | |
850ed749 | 6101 | } |
efb763a5 | 6102 | |
976ca316 | 6103 | if (dwarf2_read_debug_names (per_objfile)) |
3c0aa29a | 6104 | { |
850ed749 | 6105 | dwarf_read_debug_printf ("found debug names"); |
976ca316 | 6106 | per_objfile->resize_symtabs (); |
edc02ceb TT |
6107 | objfile->qf.push_front (make_dwarf_debug_names ()); |
6108 | return; | |
3c0aa29a | 6109 | } |
927aa2e7 | 6110 | |
976ca316 | 6111 | if (dwarf2_read_gdb_index (per_objfile, |
5989a64e | 6112 | get_gdb_index_contents_from_section<struct dwarf2_per_bfd>, |
4485a1c1 | 6113 | get_gdb_index_contents_from_section<dwz_file>)) |
3c0aa29a | 6114 | { |
850ed749 | 6115 | dwarf_read_debug_printf ("found gdb index from file"); |
976ca316 | 6116 | per_objfile->resize_symtabs (); |
edc02ceb TT |
6117 | objfile->qf.push_front (make_dwarf_gdb_index ()); |
6118 | return; | |
3c0aa29a | 6119 | } |
9291a0cd | 6120 | |
87d6a7aa | 6121 | /* ... otherwise, try to find the index in the index cache. */ |
976ca316 | 6122 | if (dwarf2_read_gdb_index (per_objfile, |
87d6a7aa SM |
6123 | get_gdb_index_contents_from_cache, |
6124 | get_gdb_index_contents_from_cache_dwz)) | |
6125 | { | |
850ed749 | 6126 | dwarf_read_debug_printf ("found gdb index from cache"); |
87d6a7aa | 6127 | global_index_cache.hit (); |
976ca316 | 6128 | per_objfile->resize_symtabs (); |
edc02ceb TT |
6129 | objfile->qf.push_front (make_dwarf_gdb_index ()); |
6130 | return; | |
87d6a7aa SM |
6131 | } |
6132 | ||
6133 | global_index_cache.miss (); | |
edc02ceb | 6134 | objfile->qf.push_front (make_lazy_dwarf_reader ()); |
9291a0cd TT |
6135 | } |
6136 | ||
6137 | \f | |
6138 | ||
dce234bc PP |
6139 | /* Build a partial symbol table. */ |
6140 | ||
6141 | void | |
eb36a3eb | 6142 | dwarf2_build_psymtabs (struct objfile *objfile, psymbol_functions *psf) |
dce234bc | 6143 | { |
976ca316 SM |
6144 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
6145 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
17ee85fc TT |
6146 | |
6147 | if (per_bfd->partial_symtabs != nullptr) | |
6148 | { | |
6149 | /* Partial symbols were already read, so now we can simply | |
6150 | attach them. */ | |
eb36a3eb TT |
6151 | if (psf == nullptr) |
6152 | { | |
6153 | psf = new psymbol_functions (per_bfd->partial_symtabs); | |
6154 | objfile->qf.emplace_front (psf); | |
6155 | } | |
6156 | else | |
6157 | psf->set_partial_symtabs (per_bfd->partial_symtabs); | |
976ca316 | 6158 | per_objfile->resize_symtabs (); |
17ee85fc TT |
6159 | return; |
6160 | } | |
c9bf0622 | 6161 | |
eb36a3eb TT |
6162 | if (psf == nullptr) |
6163 | { | |
6164 | psf = new psymbol_functions; | |
6165 | objfile->qf.emplace_front (psf); | |
6166 | } | |
6167 | const std::shared_ptr<psymtab_storage> &partial_symtabs | |
6168 | = psf->get_partial_symtabs (); | |
6169 | ||
51962708 TT |
6170 | /* Set the local reference to partial symtabs, so that we don't try |
6171 | to read them again if reading another objfile with the same BFD. | |
6172 | If we can't in fact share, this won't make a difference anyway as | |
6173 | the dwarf2_per_bfd object won't be shared. */ | |
eb36a3eb | 6174 | per_bfd->partial_symtabs = partial_symtabs; |
51962708 | 6175 | |
a70b8144 | 6176 | try |
c9bf0622 TT |
6177 | { |
6178 | /* This isn't really ideal: all the data we allocate on the | |
6179 | objfile's obstack is still uselessly kept around. However, | |
6180 | freeing it seems unsafe. */ | |
eb36a3eb | 6181 | psymtab_discarder psymtabs (partial_symtabs.get ()); |
976ca316 | 6182 | dwarf2_build_psymtabs_hard (per_objfile); |
906768f9 | 6183 | psymtabs.keep (); |
87d6a7aa | 6184 | |
976ca316 | 6185 | per_objfile->resize_symtabs (); |
af758d11 | 6186 | |
87d6a7aa | 6187 | /* (maybe) store an index in the cache. */ |
976ca316 | 6188 | global_index_cache.store (per_objfile); |
c9bf0622 | 6189 | } |
230d2906 | 6190 | catch (const gdb_exception_error &except) |
492d29ea PA |
6191 | { |
6192 | exception_print (gdb_stderr, except); | |
6193 | } | |
c906108c | 6194 | } |
c906108c | 6195 | |
3b80fe9b DE |
6196 | /* Find the base address of the compilation unit for range lists and |
6197 | location lists. It will normally be specified by DW_AT_low_pc. | |
6198 | In DWARF-3 draft 4, the base address could be overridden by | |
6199 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6200 | compilation units with discontinuous ranges. */ | |
6201 | ||
6202 | static void | |
6203 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6204 | { | |
6205 | struct attribute *attr; | |
6206 | ||
2b24b6e4 | 6207 | cu->base_address.reset (); |
3b80fe9b DE |
6208 | |
6209 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6210 | if (attr != nullptr) |
95f982e5 | 6211 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
6212 | else |
6213 | { | |
6214 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6215 | if (attr != nullptr) |
95f982e5 | 6216 | cu->base_address = attr->as_address (); |
3b80fe9b DE |
6217 | } |
6218 | } | |
6219 | ||
36586728 TT |
6220 | /* Helper function that returns the proper abbrev section for |
6221 | THIS_CU. */ | |
6222 | ||
6223 | static struct dwarf2_section_info * | |
6224 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6225 | { | |
6226 | struct dwarf2_section_info *abbrev; | |
c3699833 | 6227 | dwarf2_per_bfd *per_bfd = this_cu->per_bfd; |
36586728 TT |
6228 | |
6229 | if (this_cu->is_dwz) | |
a7308ce0 | 6230 | abbrev = &dwarf2_get_dwz_file (per_bfd, true)->abbrev; |
36586728 | 6231 | else |
c3699833 | 6232 | abbrev = &per_bfd->abbrev; |
36586728 TT |
6233 | |
6234 | return abbrev; | |
6235 | } | |
6236 | ||
f4dc4d17 DE |
6237 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6238 | ||
6239 | static sect_offset | |
976ca316 | 6240 | read_abbrev_offset (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6241 | struct dwarf2_section_info *section, |
9c541725 | 6242 | sect_offset sect_off) |
f4dc4d17 | 6243 | { |
96b79293 | 6244 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 6245 | const gdb_byte *info_ptr; |
ac298888 | 6246 | unsigned int initial_length_size, offset_size; |
43988095 | 6247 | uint16_t version; |
f4dc4d17 | 6248 | |
976ca316 | 6249 | section->read (per_objfile->objfile); |
9c541725 | 6250 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6251 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6252 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6253 | info_ptr += initial_length_size; |
6254 | ||
6255 | version = read_2_bytes (abfd, info_ptr); | |
6256 | info_ptr += 2; | |
6257 | if (version >= 5) | |
6258 | { | |
6259 | /* Skip unit type and address size. */ | |
6260 | info_ptr += 2; | |
6261 | } | |
6262 | ||
24aa364d | 6263 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6264 | } |
6265 | ||
b83470bf TT |
6266 | /* A partial symtab that is used only for include files. */ |
6267 | struct dwarf2_include_psymtab : public partial_symtab | |
6268 | { | |
7b249e47 TT |
6269 | dwarf2_include_psymtab (const char *filename, |
6270 | psymtab_storage *partial_symtabs, | |
6271 | struct objfile *objfile) | |
6272 | : partial_symtab (filename, partial_symtabs, objfile) | |
b83470bf TT |
6273 | { |
6274 | } | |
6275 | ||
6276 | void read_symtab (struct objfile *objfile) override | |
6277 | { | |
194d088f TV |
6278 | /* It's an include file, no symbols to read for it. |
6279 | Everything is in the includer symtab. */ | |
6280 | ||
6281 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
6282 | expansion of the includer psymtab. We use the dependencies[0] field to | |
6283 | model the includer. But if we go the regular route of calling | |
6284 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
6285 | to expand the includer, we'll only use expand_psymtab on the includer | |
6286 | (making it a non-toplevel psymtab), while if we expand the includer via | |
6287 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
6288 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
6289 | psymtab, and trigger read_symtab on the includer here directly. */ | |
6290 | includer ()->read_symtab (objfile); | |
b83470bf TT |
6291 | } |
6292 | ||
6293 | void expand_psymtab (struct objfile *objfile) override | |
6294 | { | |
194d088f TV |
6295 | /* This is not called by read_symtab, and should not be called by any |
6296 | expand_dependencies. */ | |
6297 | gdb_assert (false); | |
b83470bf TT |
6298 | } |
6299 | ||
5717c425 | 6300 | bool readin_p (struct objfile *objfile) const override |
b83470bf | 6301 | { |
5717c425 | 6302 | return includer ()->readin_p (objfile); |
b83470bf TT |
6303 | } |
6304 | ||
5717c425 | 6305 | compunit_symtab *get_compunit_symtab (struct objfile *objfile) const override |
b83470bf TT |
6306 | { |
6307 | return nullptr; | |
6308 | } | |
6309 | ||
6310 | private: | |
194d088f TV |
6311 | partial_symtab *includer () const |
6312 | { | |
6313 | /* An include psymtab has exactly one dependency: the psymtab that | |
6314 | includes it. */ | |
6315 | gdb_assert (this->number_of_dependencies == 1); | |
6316 | return this->dependencies[0]; | |
6317 | } | |
b83470bf TT |
6318 | }; |
6319 | ||
aaa75496 JB |
6320 | /* Allocate a new partial symtab for file named NAME and mark this new |
6321 | partial symtab as being an include of PST. */ | |
6322 | ||
6323 | static void | |
84685904 | 6324 | dwarf2_create_include_psymtab (dwarf2_per_bfd *per_bfd, |
7b249e47 TT |
6325 | const char *name, |
6326 | dwarf2_psymtab *pst, | |
6327 | psymtab_storage *partial_symtabs, | |
dda83cd7 | 6328 | struct objfile *objfile) |
aaa75496 | 6329 | { |
7b249e47 TT |
6330 | dwarf2_include_psymtab *subpst |
6331 | = new dwarf2_include_psymtab (name, partial_symtabs, objfile); | |
aaa75496 | 6332 | |
fbd9ab74 | 6333 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
45940949 | 6334 | subpst->dirname = pst->dirname; |
fbd9ab74 | 6335 | |
84685904 | 6336 | subpst->dependencies = per_bfd->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6337 | subpst->dependencies[0] = pst; |
6338 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
6339 | } |
6340 | ||
6341 | /* Read the Line Number Program data and extract the list of files | |
6342 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6343 | partial symtab for each of these included files. */ |
aaa75496 JB |
6344 | |
6345 | static void | |
6346 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6347 | struct die_info *die, |
891813be | 6348 | dwarf2_psymtab *pst) |
aaa75496 | 6349 | { |
fff8551c | 6350 | line_header_up lh; |
d85a05f0 | 6351 | struct attribute *attr; |
aaa75496 | 6352 | |
d85a05f0 | 6353 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e TT |
6354 | if (attr != nullptr && attr->form_is_unsigned ()) |
6355 | lh = dwarf_decode_line_header ((sect_offset) attr->as_unsigned (), cu); | |
aaa75496 JB |
6356 | if (lh == NULL) |
6357 | return; /* No linetable, so no includes. */ | |
6358 | ||
79748972 TT |
6359 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6360 | that we pass in the raw text_low here; that is ok because we're | |
6361 | only decoding the line table to make include partial symtabs, and | |
6362 | so the addresses aren't really used. */ | |
4ae976d1 | 6363 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6364 | pst->raw_text_low (), 1); |
aaa75496 JB |
6365 | } |
6366 | ||
348e048f | 6367 | static hashval_t |
52dc124a | 6368 | hash_signatured_type (const void *item) |
348e048f | 6369 | { |
9a3c8263 SM |
6370 | const struct signatured_type *sig_type |
6371 | = (const struct signatured_type *) item; | |
9a619af0 | 6372 | |
348e048f | 6373 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6374 | return sig_type->signature; |
348e048f DE |
6375 | } |
6376 | ||
6377 | static int | |
52dc124a | 6378 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6379 | { |
9a3c8263 SM |
6380 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6381 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6382 | |
348e048f DE |
6383 | return lhs->signature == rhs->signature; |
6384 | } | |
6385 | ||
1fd400ff TT |
6386 | /* Allocate a hash table for signatured types. */ |
6387 | ||
b0b6a987 | 6388 | static htab_up |
298e9637 | 6389 | allocate_signatured_type_table () |
1fd400ff | 6390 | { |
b0b6a987 TT |
6391 | return htab_up (htab_create_alloc (41, |
6392 | hash_signatured_type, | |
6393 | eq_signatured_type, | |
6394 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6395 | } |
6396 | ||
d467dd73 | 6397 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6398 | |
6399 | static int | |
d467dd73 | 6400 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6401 | { |
9a3c8263 | 6402 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6403 | std::vector<signatured_type *> *all_type_units |
6404 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6405 | |
b2bdb8cf | 6406 | all_type_units->push_back (sigt); |
1fd400ff TT |
6407 | |
6408 | return 1; | |
6409 | } | |
6410 | ||
78d4d2c5 | 6411 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6412 | and fill them into TYPES_HTAB. It will process only type units, |
6413 | therefore DW_UT_type. */ | |
c88ee1f0 | 6414 | |
78d4d2c5 | 6415 | static void |
976ca316 | 6416 | create_debug_type_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6417 | struct dwo_file *dwo_file, |
b0b6a987 | 6418 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6419 | rcuh_kind section_kind) |
348e048f | 6420 | { |
976ca316 | 6421 | struct objfile *objfile = per_objfile->objfile; |
4bdcc0c1 | 6422 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6423 | bfd *abfd; |
6424 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6425 | |
4bdcc0c1 DE |
6426 | abbrev_section = (dwo_file != NULL |
6427 | ? &dwo_file->sections.abbrev | |
976ca316 | 6428 | : &per_objfile->per_bfd->abbrev); |
4bdcc0c1 | 6429 | |
4800761a | 6430 | dwarf_read_debug_printf ("Reading %s for %s", |
6f738b01 SM |
6431 | section->get_name (), |
6432 | abbrev_section->get_file_name ()); | |
09406207 | 6433 | |
96b79293 | 6434 | section->read (objfile); |
78d4d2c5 | 6435 | info_ptr = section->buffer; |
348e048f | 6436 | |
78d4d2c5 JK |
6437 | if (info_ptr == NULL) |
6438 | return; | |
348e048f | 6439 | |
78d4d2c5 JK |
6440 | /* We can't set abfd until now because the section may be empty or |
6441 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6442 | abfd = section->get_bfd_owner (); |
348e048f | 6443 | |
c0ab21c2 TT |
6444 | /* We don't use cutu_reader here because we don't need to read |
6445 | any dies: the signature is in the header. */ | |
3019eac3 | 6446 | |
78d4d2c5 JK |
6447 | end_ptr = info_ptr + section->size; |
6448 | while (info_ptr < end_ptr) | |
6449 | { | |
78d4d2c5 JK |
6450 | struct signatured_type *sig_type; |
6451 | struct dwo_unit *dwo_tu; | |
6452 | void **slot; | |
6453 | const gdb_byte *ptr = info_ptr; | |
6454 | struct comp_unit_head header; | |
6455 | unsigned int length; | |
8b70b953 | 6456 | |
9c541725 | 6457 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6458 | |
a49dd8dd JK |
6459 | /* Initialize it due to a false compiler warning. */ |
6460 | header.signature = -1; | |
9c541725 | 6461 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6462 | |
78d4d2c5 JK |
6463 | /* We need to read the type's signature in order to build the hash |
6464 | table, but we don't need anything else just yet. */ | |
348e048f | 6465 | |
976ca316 | 6466 | ptr = read_and_check_comp_unit_head (per_objfile, &header, section, |
43988095 | 6467 | abbrev_section, ptr, section_kind); |
348e048f | 6468 | |
4057dfde | 6469 | length = header.get_length (); |
6caca83c | 6470 | |
78d4d2c5 JK |
6471 | /* Skip dummy type units. */ |
6472 | if (ptr >= info_ptr + length | |
43988095 | 6473 | || peek_abbrev_code (abfd, ptr) == 0 |
d2854d8d CT |
6474 | || (header.unit_type != DW_UT_type |
6475 | && header.unit_type != DW_UT_split_type)) | |
78d4d2c5 JK |
6476 | { |
6477 | info_ptr += length; | |
6478 | continue; | |
6479 | } | |
dee91e82 | 6480 | |
78d4d2c5 JK |
6481 | if (types_htab == NULL) |
6482 | { | |
6483 | if (dwo_file) | |
298e9637 | 6484 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6485 | else |
298e9637 | 6486 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6487 | } |
8b70b953 | 6488 | |
78d4d2c5 JK |
6489 | if (dwo_file) |
6490 | { | |
6491 | sig_type = NULL; | |
976ca316 | 6492 | dwo_tu = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, dwo_unit); |
78d4d2c5 | 6493 | dwo_tu->dwo_file = dwo_file; |
43988095 | 6494 | dwo_tu->signature = header.signature; |
9c541725 | 6495 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6496 | dwo_tu->section = section; |
9c541725 | 6497 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6498 | dwo_tu->length = length; |
6499 | } | |
6500 | else | |
6501 | { | |
6502 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6503 | The real type_offset is in the DWO file. */ | |
6504 | dwo_tu = NULL; | |
976ca316 | 6505 | sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
43988095 | 6506 | sig_type->signature = header.signature; |
9c541725 | 6507 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 JK |
6508 | sig_type->per_cu.is_debug_types = 1; |
6509 | sig_type->per_cu.section = section; | |
9c541725 | 6510 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6511 | sig_type->per_cu.length = length; |
6512 | } | |
6513 | ||
b0b6a987 | 6514 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6515 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6516 | INSERT); | |
6517 | gdb_assert (slot != NULL); | |
6518 | if (*slot != NULL) | |
6519 | { | |
9c541725 | 6520 | sect_offset dup_sect_off; |
0349ea22 | 6521 | |
3019eac3 DE |
6522 | if (dwo_file) |
6523 | { | |
78d4d2c5 JK |
6524 | const struct dwo_unit *dup_tu |
6525 | = (const struct dwo_unit *) *slot; | |
6526 | ||
9c541725 | 6527 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6528 | } |
6529 | else | |
6530 | { | |
78d4d2c5 JK |
6531 | const struct signatured_type *dup_tu |
6532 | = (const struct signatured_type *) *slot; | |
6533 | ||
9c541725 | 6534 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6535 | } |
8b70b953 | 6536 | |
b98664d3 | 6537 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6538 | " the entry at offset %s, signature %s"), |
6539 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6540 | hex_string (header.signature)); |
78d4d2c5 JK |
6541 | } |
6542 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6543 | |
6f738b01 SM |
6544 | dwarf_read_debug_printf_v (" offset %s, signature %s", |
6545 | sect_offset_str (sect_off), | |
6546 | hex_string (header.signature)); | |
3019eac3 | 6547 | |
78d4d2c5 JK |
6548 | info_ptr += length; |
6549 | } | |
6550 | } | |
3019eac3 | 6551 | |
78d4d2c5 JK |
6552 | /* Create the hash table of all entries in the .debug_types |
6553 | (or .debug_types.dwo) section(s). | |
6554 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6555 | otherwise it is NULL. | |
b3c8eb43 | 6556 | |
78d4d2c5 | 6557 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6558 | |
78d4d2c5 | 6559 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6560 | |
78d4d2c5 | 6561 | static void |
976ca316 | 6562 | create_debug_types_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 6563 | struct dwo_file *dwo_file, |
fd5866f6 | 6564 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6565 | htab_up &types_htab) |
78d4d2c5 | 6566 | { |
fd5866f6 | 6567 | for (dwarf2_section_info §ion : type_sections) |
976ca316 SM |
6568 | create_debug_type_hash_table (per_objfile, dwo_file, §ion, types_htab, |
6569 | rcuh_kind::TYPE); | |
3019eac3 DE |
6570 | } |
6571 | ||
6572 | /* Create the hash table of all entries in the .debug_types section, | |
6573 | and initialize all_type_units. | |
6574 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6575 | otherwise non-zero. */ | |
6576 | ||
6577 | static int | |
976ca316 | 6578 | create_all_type_units (dwarf2_per_objfile *per_objfile) |
3019eac3 | 6579 | { |
b0b6a987 | 6580 | htab_up types_htab; |
3019eac3 | 6581 | |
976ca316 SM |
6582 | create_debug_type_hash_table (per_objfile, NULL, &per_objfile->per_bfd->info, |
6583 | types_htab, rcuh_kind::COMPILE); | |
6584 | create_debug_types_hash_table (per_objfile, NULL, per_objfile->per_bfd->types, | |
6585 | types_htab); | |
3019eac3 DE |
6586 | if (types_htab == NULL) |
6587 | { | |
976ca316 | 6588 | per_objfile->per_bfd->signatured_types = NULL; |
3019eac3 DE |
6589 | return 0; |
6590 | } | |
6591 | ||
976ca316 | 6592 | per_objfile->per_bfd->signatured_types = std::move (types_htab); |
348e048f | 6593 | |
976ca316 SM |
6594 | gdb_assert (per_objfile->per_bfd->all_type_units.empty ()); |
6595 | per_objfile->per_bfd->all_type_units.reserve | |
6596 | (htab_elements (per_objfile->per_bfd->signatured_types.get ())); | |
b2bdb8cf | 6597 | |
976ca316 | 6598 | htab_traverse_noresize (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6599 | add_signatured_type_cu_to_table, |
976ca316 | 6600 | &per_objfile->per_bfd->all_type_units); |
1fd400ff | 6601 | |
348e048f DE |
6602 | return 1; |
6603 | } | |
6604 | ||
5989a64e | 6605 | /* Add an entry for signature SIG to dwarf2_per_objfile->per_bfd->signatured_types. |
6aa5f3a6 DE |
6606 | If SLOT is non-NULL, it is the entry to use in the hash table. |
6607 | Otherwise we find one. */ | |
6608 | ||
6609 | static struct signatured_type * | |
976ca316 | 6610 | add_type_unit (dwarf2_per_objfile *per_objfile, ULONGEST sig, void **slot) |
6aa5f3a6 | 6611 | { |
976ca316 SM |
6612 | if (per_objfile->per_bfd->all_type_units.size () |
6613 | == per_objfile->per_bfd->all_type_units.capacity ()) | |
6614 | ++per_objfile->per_bfd->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6615 | |
976ca316 | 6616 | signatured_type *sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
b2bdb8cf | 6617 | |
976ca316 | 6618 | per_objfile->resize_symtabs (); |
af758d11 | 6619 | |
976ca316 | 6620 | per_objfile->per_bfd->all_type_units.push_back (sig_type); |
6aa5f3a6 DE |
6621 | sig_type->signature = sig; |
6622 | sig_type->per_cu.is_debug_types = 1; | |
976ca316 | 6623 | if (per_objfile->per_bfd->using_index) |
6aa5f3a6 DE |
6624 | { |
6625 | sig_type->per_cu.v.quick = | |
976ca316 | 6626 | OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, |
6aa5f3a6 DE |
6627 | struct dwarf2_per_cu_quick_data); |
6628 | } | |
6629 | ||
6630 | if (slot == NULL) | |
6631 | { | |
976ca316 | 6632 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 DE |
6633 | sig_type, INSERT); |
6634 | } | |
6635 | gdb_assert (*slot == NULL); | |
6636 | *slot = sig_type; | |
6637 | /* The rest of sig_type must be filled in by the caller. */ | |
6638 | return sig_type; | |
6639 | } | |
6640 | ||
a2ce51a0 DE |
6641 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6642 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6643 | ||
6644 | static void | |
976ca316 | 6645 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile *per_objfile, |
a2ce51a0 DE |
6646 | struct signatured_type *sig_entry, |
6647 | struct dwo_unit *dwo_entry) | |
6648 | { | |
976ca316 | 6649 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
1859c670 | 6650 | |
7ee85ab1 | 6651 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 | 6652 | gdb_assert (! sig_entry->per_cu.queued); |
976ca316 | 6653 | gdb_assert (per_objfile->get_cu (&sig_entry->per_cu) == NULL); |
1859c670 | 6654 | if (per_bfd->using_index) |
6aa5f3a6 DE |
6655 | { |
6656 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
976ca316 | 6657 | gdb_assert (!per_objfile->symtab_set_p (&sig_entry->per_cu)); |
6aa5f3a6 DE |
6658 | } |
6659 | else | |
6660 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6661 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6662 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6663 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6664 | gdb_assert (sig_entry->dwo_unit == NULL); |
6665 | ||
6666 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6667 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6668 | sig_entry->per_cu.length = dwo_entry->length; |
6669 | sig_entry->per_cu.reading_dwo_directly = 1; | |
1859c670 | 6670 | sig_entry->per_cu.per_bfd = per_bfd; |
a2ce51a0 DE |
6671 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6672 | sig_entry->dwo_unit = dwo_entry; | |
6673 | } | |
6674 | ||
6675 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6676 | If we haven't read the TU yet, create the signatured_type data structure |
6677 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6678 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6679 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6680 | containing that CU. Otherwise we could end up reading several other DWO | |
6681 | files (due to comdat folding) to process the transitive closure of all the | |
6682 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6683 | type signature that it needs. | |
a2ce51a0 DE |
6684 | We only do this for .gdb_index because in the psymtab case we already have |
6685 | to read all the DWOs to build the type unit groups. */ | |
6686 | ||
6687 | static struct signatured_type * | |
6688 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6689 | { | |
976ca316 | 6690 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a2ce51a0 DE |
6691 | struct dwo_file *dwo_file; |
6692 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6693 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6694 | void **slot; |
a2ce51a0 | 6695 | |
976ca316 | 6696 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 | 6697 | |
6aa5f3a6 DE |
6698 | /* If TU skeletons have been removed then we may not have read in any |
6699 | TUs yet. */ | |
976ca316 SM |
6700 | if (per_objfile->per_bfd->signatured_types == NULL) |
6701 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 DE |
6702 | |
6703 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6704 | Use the global signatured_types array to do our own comdat-folding |
6705 | of types. If this is the first time we're reading this TU, and | |
6706 | the TU has an entry in .gdb_index, replace the recorded data from | |
6707 | .gdb_index with this TU. */ | |
a2ce51a0 | 6708 | |
a2ce51a0 | 6709 | find_sig_entry.signature = sig; |
976ca316 | 6710 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6711 | &find_sig_entry, INSERT); |
9a3c8263 | 6712 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6713 | |
6714 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6715 | read. Don't reassign the global entry to point to this DWO if that's |
6716 | the case. Also note that if the TU is already being read, it may not | |
6717 | have come from a DWO, the program may be a mix of Fission-compiled | |
6718 | code and non-Fission-compiled code. */ | |
6719 | ||
6720 | /* Have we already tried to read this TU? | |
6721 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6722 | needn't exist in the global table yet). */ | |
6723 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6724 | return sig_entry; |
6725 | ||
6aa5f3a6 DE |
6726 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6727 | dwo_unit of the TU itself. */ | |
6728 | dwo_file = cu->dwo_unit->dwo_file; | |
6729 | ||
a2ce51a0 DE |
6730 | /* Ok, this is the first time we're reading this TU. */ |
6731 | if (dwo_file->tus == NULL) | |
6732 | return NULL; | |
6733 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6734 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6735 | &find_dwo_entry); | |
a2ce51a0 DE |
6736 | if (dwo_entry == NULL) |
6737 | return NULL; | |
6738 | ||
6aa5f3a6 DE |
6739 | /* If the global table doesn't have an entry for this TU, add one. */ |
6740 | if (sig_entry == NULL) | |
976ca316 | 6741 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6aa5f3a6 | 6742 | |
976ca316 | 6743 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6744 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6745 | return sig_entry; |
6746 | } | |
6747 | ||
a2ce51a0 DE |
6748 | /* Subroutine of lookup_signatured_type. |
6749 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6750 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6751 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6752 | |
6753 | static struct signatured_type * | |
6754 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6755 | { | |
976ca316 SM |
6756 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
6757 | struct dwp_file *dwp_file = get_dwp_file (per_objfile); | |
a2ce51a0 DE |
6758 | struct dwo_unit *dwo_entry; |
6759 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6760 | void **slot; |
a2ce51a0 | 6761 | |
976ca316 | 6762 | gdb_assert (cu->dwo_unit && per_objfile->per_bfd->using_index); |
a2ce51a0 DE |
6763 | gdb_assert (dwp_file != NULL); |
6764 | ||
6aa5f3a6 DE |
6765 | /* If TU skeletons have been removed then we may not have read in any |
6766 | TUs yet. */ | |
976ca316 SM |
6767 | if (per_objfile->per_bfd->signatured_types == NULL) |
6768 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 | 6769 | |
6aa5f3a6 | 6770 | find_sig_entry.signature = sig; |
976ca316 | 6771 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6772 | &find_sig_entry, INSERT); |
9a3c8263 | 6773 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6774 | |
6775 | /* Have we already tried to read this TU? | |
6776 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6777 | needn't exist in the global table yet). */ | |
6778 | if (sig_entry != NULL) | |
6779 | return sig_entry; | |
6780 | ||
a2ce51a0 DE |
6781 | if (dwp_file->tus == NULL) |
6782 | return NULL; | |
976ca316 SM |
6783 | dwo_entry = lookup_dwo_unit_in_dwp (per_objfile, dwp_file, NULL, sig, |
6784 | 1 /* is_debug_types */); | |
a2ce51a0 DE |
6785 | if (dwo_entry == NULL) |
6786 | return NULL; | |
6787 | ||
976ca316 SM |
6788 | sig_entry = add_type_unit (per_objfile, sig, slot); |
6789 | fill_in_sig_entry_from_dwo_entry (per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6790 | |
a2ce51a0 DE |
6791 | return sig_entry; |
6792 | } | |
6793 | ||
380bca97 | 6794 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6795 | Returns NULL if signature SIG is not present in the table. |
6796 | It is up to the caller to complain about this. */ | |
348e048f DE |
6797 | |
6798 | static struct signatured_type * | |
a2ce51a0 | 6799 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6800 | { |
976ca316 | 6801 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 6802 | |
976ca316 | 6803 | if (cu->dwo_unit && per_objfile->per_bfd->using_index) |
a2ce51a0 DE |
6804 | { |
6805 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6806 | These cases require special processing. */ | |
976ca316 | 6807 | if (get_dwp_file (per_objfile) == NULL) |
a2ce51a0 DE |
6808 | return lookup_dwo_signatured_type (cu, sig); |
6809 | else | |
6810 | return lookup_dwp_signatured_type (cu, sig); | |
6811 | } | |
6812 | else | |
6813 | { | |
6814 | struct signatured_type find_entry, *entry; | |
348e048f | 6815 | |
976ca316 | 6816 | if (per_objfile->per_bfd->signatured_types == NULL) |
a2ce51a0 DE |
6817 | return NULL; |
6818 | find_entry.signature = sig; | |
9a3c8263 | 6819 | entry = ((struct signatured_type *) |
976ca316 | 6820 | htab_find (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6821 | &find_entry)); |
a2ce51a0 DE |
6822 | return entry; |
6823 | } | |
348e048f | 6824 | } |
18a8505e | 6825 | |
42e7ad6c | 6826 | /* Low level DIE reading support. */ |
348e048f | 6827 | |
d85a05f0 DJ |
6828 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6829 | ||
6830 | static void | |
6831 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6832 | struct dwarf2_cu *cu, |
3019eac3 | 6833 | struct dwarf2_section_info *section, |
685af9cd TT |
6834 | struct dwo_file *dwo_file, |
6835 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6836 | { |
fceca515 | 6837 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6838 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6839 | reader->cu = cu; |
3019eac3 | 6840 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6841 | reader->die_section = section; |
6842 | reader->buffer = section->buffer; | |
f664829e | 6843 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6844 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6845 | } |
6846 | ||
c0ab21c2 | 6847 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6848 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6849 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6850 | already. |
6851 | ||
6852 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6853 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6854 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6855 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6856 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6857 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6858 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6859 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6860 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6861 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6862 | kept around for at least as long as *RESULT_READER. | |
6863 | ||
b0c7bfa9 DE |
6864 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6865 | ||
6866 | static int | |
4ab09049 | 6867 | read_cutu_die_from_dwo (dwarf2_cu *cu, |
b0c7bfa9 | 6868 | struct dwo_unit *dwo_unit, |
b0c7bfa9 | 6869 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6870 | const char *stub_comp_dir, |
b0c7bfa9 | 6871 | struct die_reader_specs *result_reader, |
d521ce57 | 6872 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6873 | struct die_info **result_comp_unit_die, |
685af9cd | 6874 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6875 | { |
976ca316 | 6876 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
4ab09049 | 6877 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
976ca316 | 6878 | struct objfile *objfile = per_objfile->objfile; |
b0c7bfa9 | 6879 | bfd *abfd; |
d521ce57 | 6880 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6881 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6882 | int i,num_extra_attrs; | |
6883 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6884 | struct die_info *comp_unit_die; |
6885 | ||
b0aeadb3 DE |
6886 | /* At most one of these may be provided. */ |
6887 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6888 | |
b0c7bfa9 DE |
6889 | /* These attributes aren't processed until later: |
6890 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6891 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6892 | referenced later. However, these attributes are found in the stub | |
6893 | which we won't have later. In order to not impose this complication | |
6894 | on the rest of the code, we read them here and copy them to the | |
6895 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6896 | |
6897 | stmt_list = NULL; | |
6898 | low_pc = NULL; | |
6899 | high_pc = NULL; | |
6900 | ranges = NULL; | |
6901 | comp_dir = NULL; | |
6902 | ||
6903 | if (stub_comp_unit_die != NULL) | |
6904 | { | |
6905 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6906 | DWO file. */ | |
4ab09049 | 6907 | if (!per_cu->is_debug_types) |
b0c7bfa9 DE |
6908 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); |
6909 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6910 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6911 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6912 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6913 | ||
a39fdb41 | 6914 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6915 | |
2b0c7f41 SM |
6916 | /* There should be a DW_AT_GNU_ranges_base attribute here (if needed). |
6917 | We need the value before we can process DW_AT_ranges values from the | |
6918 | DWO. */ | |
6919 | cu->gnu_ranges_base = stub_comp_unit_die->gnu_ranges_base (); | |
6920 | ||
6921 | /* For DWARF5: record the DW_AT_rnglists_base value from the skeleton. If | |
6922 | there are attributes of form DW_FORM_rnglistx in the skeleton, they'll | |
6923 | need the rnglists base. Attributes of form DW_FORM_rnglistx in the | |
6924 | split unit don't use it, as the DWO has its own .debug_rnglists.dwo | |
6925 | section. */ | |
6926 | cu->rnglists_base = stub_comp_unit_die->rnglists_base (); | |
b0c7bfa9 | 6927 | } |
a2ce51a0 DE |
6928 | else if (stub_comp_dir != NULL) |
6929 | { | |
6930 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
fe56917a | 6931 | comp_dir = OBSTACK_ZALLOC (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6932 | comp_dir->name = DW_AT_comp_dir; |
6933 | comp_dir->form = DW_FORM_string; | |
c6481205 | 6934 | comp_dir->set_string_noncanonical (stub_comp_dir); |
a2ce51a0 | 6935 | } |
b0c7bfa9 DE |
6936 | |
6937 | /* Set up for reading the DWO CU/TU. */ | |
6938 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6939 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6940 | section->read (objfile); |
6941 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6942 | begin_info_ptr = info_ptr = (section->buffer |
6943 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6944 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 | 6945 | |
4ab09049 | 6946 | if (per_cu->is_debug_types) |
b0c7bfa9 | 6947 | { |
4ab09049 | 6948 | signatured_type *sig_type = (struct signatured_type *) per_cu; |
b0c7bfa9 | 6949 | |
976ca316 SM |
6950 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6951 | section, dwo_abbrev_section, | |
43988095 | 6952 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6953 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6954 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6955 | { |
6956 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6957 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6958 | hex_string (sig_type->signature), |
43988095 | 6959 | hex_string (cu->header.signature), |
9d8780f0 | 6960 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6961 | bfd_get_filename (abfd)); |
6962 | } | |
9c541725 | 6963 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6964 | /* For DWOs coming from DWP files, we don't know the CU length |
6965 | nor the type's offset in the TU until now. */ | |
4057dfde | 6966 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6967 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6968 | |
6969 | /* Establish the type offset that can be used to lookup the type. | |
6970 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6971 | sig_type->type_offset_in_section |
6972 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6973 | } |
6974 | else | |
6975 | { | |
976ca316 SM |
6976 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
6977 | section, dwo_abbrev_section, | |
43988095 | 6978 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6979 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6980 | /* For DWOs coming from DWP files, we don't know the CU length |
6981 | until now. */ | |
4057dfde | 6982 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6983 | } |
6984 | ||
606decb2 | 6985 | dwo_abbrev_section->read (objfile); |
685af9cd | 6986 | *result_dwo_abbrev_table |
606decb2 | 6987 | = abbrev_table::read (dwo_abbrev_section, cu->header.abbrev_sect_off); |
685af9cd TT |
6988 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6989 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6990 | |
6991 | /* Read in the die, but leave space to copy over the attributes | |
6992 | from the stub. This has the benefit of simplifying the rest of | |
6993 | the code - all the work to maintain the illusion of a single | |
6994 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6995 | num_extra_attrs = ((stmt_list != NULL) | |
6996 | + (low_pc != NULL) | |
6997 | + (high_pc != NULL) | |
6998 | + (ranges != NULL) | |
6999 | + (comp_dir != NULL)); | |
7000 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 7001 | num_extra_attrs); |
b0c7bfa9 DE |
7002 | |
7003 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7004 | comp_unit_die = *result_comp_unit_die; | |
7005 | i = comp_unit_die->num_attrs; | |
7006 | if (stmt_list != NULL) | |
7007 | comp_unit_die->attrs[i++] = *stmt_list; | |
7008 | if (low_pc != NULL) | |
7009 | comp_unit_die->attrs[i++] = *low_pc; | |
7010 | if (high_pc != NULL) | |
7011 | comp_unit_die->attrs[i++] = *high_pc; | |
7012 | if (ranges != NULL) | |
7013 | comp_unit_die->attrs[i++] = *ranges; | |
7014 | if (comp_dir != NULL) | |
7015 | comp_unit_die->attrs[i++] = *comp_dir; | |
7016 | comp_unit_die->num_attrs += num_extra_attrs; | |
7017 | ||
b4f54984 | 7018 | if (dwarf_die_debug) |
bf6af496 DE |
7019 | { |
7020 | fprintf_unfiltered (gdb_stdlog, | |
7021 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 7022 | section->get_name (), |
bf6af496 DE |
7023 | (unsigned) (begin_info_ptr - section->buffer), |
7024 | bfd_get_filename (abfd)); | |
b4f54984 | 7025 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7026 | } |
7027 | ||
b0c7bfa9 DE |
7028 | /* Skip dummy compilation units. */ |
7029 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7030 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7031 | return 0; | |
7032 | ||
7033 | *result_info_ptr = info_ptr; | |
7034 | return 1; | |
7035 | } | |
7036 | ||
a084a2a6 AT |
7037 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
7038 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
7039 | signature is part of the header. */ | |
7040 | static gdb::optional<ULONGEST> | |
7041 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
7042 | { | |
7043 | if (cu->header.version >= 5) | |
7044 | return cu->header.signature; | |
7045 | struct attribute *attr; | |
7046 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
529908cb | 7047 | if (attr == nullptr || !attr->form_is_unsigned ()) |
a084a2a6 | 7048 | return gdb::optional<ULONGEST> (); |
529908cb | 7049 | return attr->as_unsigned (); |
a084a2a6 AT |
7050 | } |
7051 | ||
c0ab21c2 | 7052 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 7053 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 7054 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7055 | |
7056 | static struct dwo_unit * | |
4ab09049 | 7057 | lookup_dwo_unit (dwarf2_cu *cu, die_info *comp_unit_die, const char *dwo_name) |
b0c7bfa9 | 7058 | { |
4ab09049 | 7059 | dwarf2_per_cu_data *per_cu = cu->per_cu; |
b0c7bfa9 | 7060 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 7061 | const char *comp_dir; |
b0c7bfa9 | 7062 | |
a2ce51a0 DE |
7063 | gdb_assert (cu != NULL); |
7064 | ||
b0c7bfa9 | 7065 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 7066 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 7067 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 | 7068 | |
4ab09049 SM |
7069 | if (per_cu->is_debug_types) |
7070 | dwo_unit = lookup_dwo_type_unit (cu, dwo_name, comp_dir); | |
b0c7bfa9 DE |
7071 | else |
7072 | { | |
a084a2a6 | 7073 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
4ab09049 | 7074 | |
a084a2a6 | 7075 | if (!signature.has_value ()) |
b0c7bfa9 DE |
7076 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
7077 | " [in module %s]"), | |
4ab09049 SM |
7078 | dwo_name, bfd_get_filename (per_cu->per_bfd->obfd)); |
7079 | ||
7080 | dwo_unit = lookup_dwo_comp_unit (cu, dwo_name, comp_dir, *signature); | |
b0c7bfa9 DE |
7081 | } |
7082 | ||
b0c7bfa9 DE |
7083 | return dwo_unit; |
7084 | } | |
7085 | ||
c0ab21c2 | 7086 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 7087 | See it for a description of the parameters. |
fcd3b13d | 7088 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 7089 | |
c0ab21c2 | 7090 | void |
9e021579 SM |
7091 | cutu_reader::init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
7092 | dwarf2_per_objfile *per_objfile, | |
2e671100 | 7093 | dwarf2_cu *existing_cu) |
a2ce51a0 | 7094 | { |
a2ce51a0 | 7095 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7096 | |
7097 | /* Verify we can do the following downcast, and that we have the | |
7098 | data we need. */ | |
7099 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7100 | sig_type = (struct signatured_type *) this_cu; | |
7101 | gdb_assert (sig_type->dwo_unit != NULL); | |
7102 | ||
2e671100 SM |
7103 | dwarf2_cu *cu; |
7104 | ||
7105 | if (existing_cu != nullptr) | |
6aa5f3a6 | 7106 | { |
2e671100 SM |
7107 | cu = existing_cu; |
7108 | gdb_assert (cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 7109 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 7110 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
7111 | } |
7112 | else | |
7113 | { | |
7188ed02 | 7114 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 7115 | in per_objfile yet. */ |
7188ed02 | 7116 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
9e021579 | 7117 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
2e671100 | 7118 | cu = m_new_cu.get (); |
6aa5f3a6 DE |
7119 | } |
7120 | ||
7121 | /* A future optimization, if needed, would be to use an existing | |
7122 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7123 | could share abbrev tables. */ | |
a2ce51a0 | 7124 | |
2e671100 | 7125 | if (read_cutu_die_from_dwo (cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7126 | NULL /* stub_comp_unit_die */, |
7127 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 7128 | this, &info_ptr, |
3e225074 | 7129 | &comp_unit_die, |
c0ab21c2 | 7130 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
7131 | { |
7132 | /* Dummy die. */ | |
c0ab21c2 | 7133 | dummy_p = true; |
a2ce51a0 | 7134 | } |
a2ce51a0 DE |
7135 | } |
7136 | ||
fd820528 | 7137 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7138 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7139 | |
f4dc4d17 DE |
7140 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7141 | Otherwise the table specified in the comp unit header is read in and used. | |
7142 | This is an optimization for when we already have the abbrev table. | |
7143 | ||
2e671100 SM |
7144 | If EXISTING_CU is non-NULL, then use it. Otherwise, a new CU is |
7145 | allocated. */ | |
aaa75496 | 7146 | |
ab432490 | 7147 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7148 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 | 7149 | struct abbrev_table *abbrev_table, |
2e671100 | 7150 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
7151 | bool skip_partial) |
7152 | : die_reader_specs {}, | |
6751ebae | 7153 | m_this_cu (this_cu) |
c906108c | 7154 | { |
976ca316 | 7155 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7156 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7157 | bfd *abfd = section->get_bfd_owner (); |
c0ab21c2 | 7158 | const gdb_byte *begin_info_ptr; |
dee91e82 | 7159 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7160 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7161 | /* Non-zero if CU currently points to a DWO file and we need to |
7162 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7163 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7164 | int rereading_dwo_cu = 0; |
c906108c | 7165 | |
b4f54984 | 7166 | if (dwarf_die_debug) |
9d8780f0 | 7167 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7168 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7169 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7170 | |
a2ce51a0 DE |
7171 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7172 | file (instead of going through the stub), short-circuit all of this. */ | |
7173 | if (this_cu->reading_dwo_directly) | |
7174 | { | |
7175 | /* Narrow down the scope of possibilities to have to understand. */ | |
7176 | gdb_assert (this_cu->is_debug_types); | |
7177 | gdb_assert (abbrev_table == NULL); | |
976ca316 | 7178 | init_tu_and_read_dwo_dies (this_cu, per_objfile, existing_cu); |
a2ce51a0 DE |
7179 | return; |
7180 | } | |
7181 | ||
dee91e82 | 7182 | /* This is cheap if the section is already read in. */ |
96b79293 | 7183 | section->read (objfile); |
dee91e82 | 7184 | |
9c541725 | 7185 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7186 | |
7187 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7188 | |
2e671100 SM |
7189 | dwarf2_cu *cu; |
7190 | ||
7191 | if (existing_cu != nullptr) | |
dee91e82 | 7192 | { |
2e671100 | 7193 | cu = existing_cu; |
42e7ad6c DE |
7194 | /* If this CU is from a DWO file we need to start over, we need to |
7195 | refetch the attributes from the skeleton CU. | |
7196 | This could be optimized by retrieving those attributes from when we | |
7197 | were here the first time: the previous comp_unit_die was stored in | |
7198 | comp_unit_obstack. But there's no data yet that we need this | |
7199 | optimization. */ | |
7200 | if (cu->dwo_unit != NULL) | |
7201 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7202 | } |
7203 | else | |
7204 | { | |
7188ed02 | 7205 | /* If an existing_cu is provided, a dwarf2_cu must not exist for this_cu |
dda83cd7 | 7206 | in per_objfile yet. */ |
976ca316 SM |
7207 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
7208 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); | |
c0ab21c2 | 7209 | cu = m_new_cu.get (); |
42e7ad6c | 7210 | } |
dee91e82 | 7211 | |
b0c7bfa9 | 7212 | /* Get the header. */ |
9c541725 | 7213 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7214 | { |
7215 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7216 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7217 | } |
7218 | else | |
7219 | { | |
3019eac3 | 7220 | if (this_cu->is_debug_types) |
dee91e82 | 7221 | { |
976ca316 SM |
7222 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7223 | section, abbrev_section, | |
7224 | info_ptr, rcuh_kind::TYPE); | |
dee91e82 | 7225 | |
42e7ad6c DE |
7226 | /* Since per_cu is the first member of struct signatured_type, |
7227 | we can go from a pointer to one to a pointer to the other. */ | |
7228 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7229 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7230 | gdb_assert (sig_type->type_offset_in_tu |
7231 | == cu->header.type_cu_offset_in_tu); | |
7232 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7233 | |
42e7ad6c DE |
7234 | /* LENGTH has not been set yet for type units if we're |
7235 | using .gdb_index. */ | |
4057dfde | 7236 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
7237 | |
7238 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7239 | sig_type->type_offset_in_section = |
7240 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7241 | |
7242 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7243 | } |
7244 | else | |
7245 | { | |
976ca316 SM |
7246 | info_ptr = read_and_check_comp_unit_head (per_objfile, &cu->header, |
7247 | section, abbrev_section, | |
43988095 JK |
7248 | info_ptr, |
7249 | rcuh_kind::COMPILE); | |
dee91e82 | 7250 | |
9c541725 | 7251 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
3ee6bb11 TV |
7252 | if (this_cu->length == 0) |
7253 | this_cu->length = cu->header.get_length (); | |
7254 | else | |
7255 | gdb_assert (this_cu->length == cu->header.get_length ()); | |
43988095 | 7256 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7257 | } |
7258 | } | |
10b3939b | 7259 | |
6caca83c | 7260 | /* Skip dummy compilation units. */ |
dee91e82 | 7261 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7262 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7263 | { |
7264 | dummy_p = true; | |
7265 | return; | |
7266 | } | |
6caca83c | 7267 | |
433df2d4 DE |
7268 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7269 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7270 | done. */ |
f4dc4d17 | 7271 | if (abbrev_table != NULL) |
685af9cd TT |
7272 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7273 | else | |
f4dc4d17 | 7274 | { |
606decb2 | 7275 | abbrev_section->read (objfile); |
c0ab21c2 | 7276 | m_abbrev_table_holder |
606decb2 | 7277 | = abbrev_table::read (abbrev_section, cu->header.abbrev_sect_off); |
c0ab21c2 | 7278 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7279 | } |
af703f96 | 7280 | |
dee91e82 | 7281 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 7282 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 7283 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 7284 | |
58f0c718 | 7285 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7286 | { |
7287 | dummy_p = true; | |
7288 | return; | |
7289 | } | |
58f0c718 | 7290 | |
b0c7bfa9 | 7291 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7292 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7293 | table from the DWO file and pass the ownership over to us. It will be | |
7294 | referenced from READER, so we must make sure to free it after we're done | |
7295 | with READER. | |
7296 | ||
b0c7bfa9 DE |
7297 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7298 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7299 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7300 | if (dwo_name != nullptr) |
3019eac3 | 7301 | { |
3019eac3 | 7302 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7303 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 7304 | |
3e225074 | 7305 | if (comp_unit_die->has_children) |
6a506a2d | 7306 | { |
b98664d3 | 7307 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7308 | " has children (offset %s) [in module %s]"), |
7309 | sect_offset_str (this_cu->sect_off), | |
7310 | bfd_get_filename (abfd)); | |
6a506a2d | 7311 | } |
4ab09049 | 7312 | dwo_unit = lookup_dwo_unit (cu, comp_unit_die, dwo_name); |
6a506a2d | 7313 | if (dwo_unit != NULL) |
3019eac3 | 7314 | { |
4ab09049 | 7315 | if (read_cutu_die_from_dwo (cu, dwo_unit, |
a2ce51a0 | 7316 | comp_unit_die, NULL, |
c0ab21c2 | 7317 | this, &info_ptr, |
3e225074 | 7318 | &dwo_comp_unit_die, |
c0ab21c2 | 7319 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7320 | { |
7321 | /* Dummy die. */ | |
c0ab21c2 | 7322 | dummy_p = true; |
6a506a2d DE |
7323 | return; |
7324 | } | |
7325 | comp_unit_die = dwo_comp_unit_die; | |
7326 | } | |
7327 | else | |
7328 | { | |
7329 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7330 | the stub. A complaint has already been logged. There's | |
7331 | not much more we can do except pass on the stub DIE to | |
7332 | die_reader_func. We don't want to throw an error on bad | |
7333 | debug info. */ | |
3019eac3 DE |
7334 | } |
7335 | } | |
c0ab21c2 | 7336 | } |
3019eac3 | 7337 | |
6751ebae TT |
7338 | void |
7339 | cutu_reader::keep () | |
c0ab21c2 | 7340 | { |
b0c7bfa9 | 7341 | /* Done, clean up. */ |
6751ebae TT |
7342 | gdb_assert (!dummy_p); |
7343 | if (m_new_cu != NULL) | |
348e048f | 7344 | { |
7188ed02 | 7345 | /* Save this dwarf2_cu in the per_objfile. The per_objfile owns it |
dda83cd7 | 7346 | now. */ |
7188ed02 SM |
7347 | dwarf2_per_objfile *per_objfile = m_new_cu->per_objfile; |
7348 | per_objfile->set_cu (m_this_cu, m_new_cu.release ()); | |
348e048f | 7349 | } |
dee91e82 DE |
7350 | } |
7351 | ||
18a8505e AT |
7352 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7353 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7354 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7355 | |
7356 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7357 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7358 | |
7359 | We fill in THIS_CU->length. | |
7360 | ||
dee91e82 | 7361 | THIS_CU->cu is always freed when done. |
3019eac3 | 7362 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7363 | to care whether it refers to the "main" CU or the DWO CU. |
7364 | ||
7365 | When parent_cu is passed, it is used to provide a default value for | |
7366 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7367 | |
ab432490 | 7368 | cutu_reader::cutu_reader (dwarf2_per_cu_data *this_cu, |
976ca316 | 7369 | dwarf2_per_objfile *per_objfile, |
c0ab21c2 TT |
7370 | struct dwarf2_cu *parent_cu, |
7371 | struct dwo_file *dwo_file) | |
7372 | : die_reader_specs {}, | |
7373 | m_this_cu (this_cu) | |
dee91e82 | 7374 | { |
976ca316 | 7375 | struct objfile *objfile = per_objfile->objfile; |
8a0459fd | 7376 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7377 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7378 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7379 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7380 | |
b4f54984 | 7381 | if (dwarf_die_debug) |
9d8780f0 | 7382 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7383 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7384 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7385 | |
976ca316 | 7386 | gdb_assert (per_objfile->get_cu (this_cu) == nullptr); |
dee91e82 | 7387 | |
33e80786 DE |
7388 | abbrev_section = (dwo_file != NULL |
7389 | ? &dwo_file->sections.abbrev | |
7390 | : get_abbrev_section_for_cu (this_cu)); | |
7391 | ||
dee91e82 | 7392 | /* This is cheap if the section is already read in. */ |
96b79293 | 7393 | section->read (objfile); |
dee91e82 | 7394 | |
976ca316 | 7395 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
dee91e82 | 7396 | |
9c541725 | 7397 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
976ca316 SM |
7398 | info_ptr = read_and_check_comp_unit_head (per_objfile, &m_new_cu->header, |
7399 | section, abbrev_section, info_ptr, | |
43988095 JK |
7400 | (this_cu->is_debug_types |
7401 | ? rcuh_kind::TYPE | |
7402 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7403 | |
18a8505e AT |
7404 | if (parent_cu != nullptr) |
7405 | { | |
c0ab21c2 TT |
7406 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7407 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7408 | } |
4057dfde | 7409 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7410 | |
7411 | /* Skip dummy compilation units. */ | |
7412 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7413 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7414 | { |
7415 | dummy_p = true; | |
7416 | return; | |
7417 | } | |
72bf9492 | 7418 | |
606decb2 | 7419 | abbrev_section->read (objfile); |
c0ab21c2 | 7420 | m_abbrev_table_holder |
606decb2 | 7421 | = abbrev_table::read (abbrev_section, m_new_cu->header.abbrev_sect_off); |
dee91e82 | 7422 | |
c0ab21c2 TT |
7423 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7424 | m_abbrev_table_holder.get ()); | |
3e225074 | 7425 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7426 | } |
7427 | ||
0018ea6f DE |
7428 | \f |
7429 | /* Type Unit Groups. | |
dee91e82 | 7430 | |
0018ea6f DE |
7431 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7432 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7433 | so that all types coming from the same compilation (.o file) are grouped | |
7434 | together. A future step could be to put the types in the same symtab as | |
7435 | the CU the types ultimately came from. */ | |
ff013f42 | 7436 | |
f4dc4d17 DE |
7437 | static hashval_t |
7438 | hash_type_unit_group (const void *item) | |
7439 | { | |
9a3c8263 SM |
7440 | const struct type_unit_group *tu_group |
7441 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7442 | |
094b34ac | 7443 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7444 | } |
348e048f DE |
7445 | |
7446 | static int | |
f4dc4d17 | 7447 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7448 | { |
9a3c8263 SM |
7449 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7450 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7451 | |
094b34ac | 7452 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7453 | } |
348e048f | 7454 | |
f4dc4d17 DE |
7455 | /* Allocate a hash table for type unit groups. */ |
7456 | ||
eaa5fa8b | 7457 | static htab_up |
298e9637 | 7458 | allocate_type_unit_groups_table () |
f4dc4d17 | 7459 | { |
eaa5fa8b TT |
7460 | return htab_up (htab_create_alloc (3, |
7461 | hash_type_unit_group, | |
7462 | eq_type_unit_group, | |
7463 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7464 | } |
dee91e82 | 7465 | |
f4dc4d17 DE |
7466 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7467 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7468 | of any one psymtab grow too big. */ | |
7469 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7470 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7471 | |
094b34ac | 7472 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7473 | Create the type_unit_group object used to hold one or more TUs. */ |
7474 | ||
7475 | static struct type_unit_group * | |
094b34ac | 7476 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7477 | { |
976ca316 SM |
7478 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7479 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
094b34ac | 7480 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7481 | struct type_unit_group *tu_group; |
f4dc4d17 | 7482 | |
bab287cd | 7483 | tu_group = OBSTACK_ZALLOC (&per_bfd->obstack, type_unit_group); |
094b34ac | 7484 | per_cu = &tu_group->per_cu; |
1859c670 | 7485 | per_cu->per_bfd = per_bfd; |
f4dc4d17 | 7486 | |
1859c670 | 7487 | if (per_bfd->using_index) |
094b34ac | 7488 | { |
1859c670 | 7489 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
094b34ac | 7490 | struct dwarf2_per_cu_quick_data); |
094b34ac DE |
7491 | } |
7492 | else | |
7493 | { | |
9c541725 | 7494 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7495 | dwarf2_psymtab *pst; |
528e1572 | 7496 | std::string name; |
094b34ac DE |
7497 | |
7498 | /* Give the symtab a useful name for debug purposes. */ | |
7499 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7500 | name = string_printf ("<type_units_%d>", |
7501 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7502 | else |
528e1572 | 7503 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7504 | |
976ca316 | 7505 | pst = create_partial_symtab (per_cu, per_objfile, name.c_str ()); |
6d94535f | 7506 | pst->anonymous = true; |
094b34ac | 7507 | } |
f4dc4d17 | 7508 | |
094b34ac | 7509 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7510 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7511 | |
7512 | return tu_group; | |
7513 | } | |
7514 | ||
094b34ac DE |
7515 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7516 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7517 | |
7518 | static struct type_unit_group * | |
ff39bb5e | 7519 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7520 | { |
976ca316 SM |
7521 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
7522 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; | |
f4dc4d17 DE |
7523 | struct type_unit_group *tu_group; |
7524 | void **slot; | |
7525 | unsigned int line_offset; | |
7526 | struct type_unit_group type_unit_group_for_lookup; | |
7527 | ||
976ca316 SM |
7528 | if (per_objfile->per_bfd->type_unit_groups == NULL) |
7529 | per_objfile->per_bfd->type_unit_groups = allocate_type_unit_groups_table (); | |
f4dc4d17 DE |
7530 | |
7531 | /* Do we need to create a new group, or can we use an existing one? */ | |
7532 | ||
529908cb | 7533 | if (stmt_list != nullptr && stmt_list->form_is_unsigned ()) |
f4dc4d17 | 7534 | { |
529908cb | 7535 | line_offset = stmt_list->as_unsigned (); |
f4dc4d17 DE |
7536 | ++tu_stats->nr_symtab_sharers; |
7537 | } | |
7538 | else | |
7539 | { | |
7540 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7541 | We can do various things here like create one group per TU or | |
7542 | spread them over multiple groups to split up the expansion work. | |
7543 | To avoid worst case scenarios (too many groups or too large groups) | |
7544 | we, umm, group them in bunches. */ | |
7545 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7546 | | (tu_stats->nr_stmt_less_type_units | |
7547 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7548 | ++tu_stats->nr_stmt_less_type_units; | |
7549 | } | |
7550 | ||
094b34ac | 7551 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7552 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
976ca316 | 7553 | slot = htab_find_slot (per_objfile->per_bfd->type_unit_groups.get (), |
f4dc4d17 DE |
7554 | &type_unit_group_for_lookup, INSERT); |
7555 | if (*slot != NULL) | |
7556 | { | |
9a3c8263 | 7557 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7558 | gdb_assert (tu_group != NULL); |
7559 | } | |
7560 | else | |
7561 | { | |
9c541725 | 7562 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7563 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7564 | *slot = tu_group; |
7565 | ++tu_stats->nr_symtabs; | |
7566 | } | |
7567 | ||
7568 | return tu_group; | |
7569 | } | |
0018ea6f DE |
7570 | \f |
7571 | /* Partial symbol tables. */ | |
7572 | ||
7573 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7574 | ||
7575 | The caller must fill in the following details: | |
7576 | dirname, textlow, texthigh. */ | |
7577 | ||
891813be | 7578 | static dwarf2_psymtab * |
7aa104c4 SM |
7579 | create_partial_symtab (dwarf2_per_cu_data *per_cu, |
7580 | dwarf2_per_objfile *per_objfile, | |
7581 | const char *name) | |
0018ea6f | 7582 | { |
7aa104c4 | 7583 | struct objfile *objfile = per_objfile->objfile; |
891813be | 7584 | dwarf2_psymtab *pst; |
0018ea6f | 7585 | |
7b249e47 TT |
7586 | pst = new dwarf2_psymtab (name, per_objfile->per_bfd->partial_symtabs.get (), |
7587 | objfile, per_cu); | |
0018ea6f | 7588 | |
6d94535f | 7589 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7590 | |
7591 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7592 | per_cu->v.psymtab = pst; |
7593 | ||
7594 | return pst; | |
7595 | } | |
7596 | ||
c0ab21c2 | 7597 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7598 | |
7599 | static void | |
7600 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7601 | const gdb_byte *info_ptr, |
0018ea6f | 7602 | struct die_info *comp_unit_die, |
c0ab21c2 | 7603 | enum language pretend_language) |
0018ea6f DE |
7604 | { |
7605 | struct dwarf2_cu *cu = reader->cu; | |
7aa104c4 | 7606 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
84685904 | 7607 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
7aa104c4 | 7608 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 7609 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7610 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7611 | CORE_ADDR baseaddr; |
7612 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7613 | dwarf2_psymtab *pst; |
3a2b436a | 7614 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7615 | const char *filename; |
0018ea6f | 7616 | |
0018ea6f DE |
7617 | gdb_assert (! per_cu->is_debug_types); |
7618 | ||
c0ab21c2 | 7619 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7620 | |
0018ea6f | 7621 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7622 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7623 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7624 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7625 | if (filename == NULL) | |
0018ea6f | 7626 | filename = ""; |
2e927613 TV |
7627 | else if (strcmp (filename, artificial) == 0) |
7628 | { | |
7629 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7630 | sect_offset_str (per_cu->sect_off), |
7631 | (char *) NULL)); | |
2e927613 TV |
7632 | filename = debug_filename.get (); |
7633 | } | |
0018ea6f | 7634 | |
7aa104c4 | 7635 | pst = create_partial_symtab (per_cu, per_objfile, filename); |
0018ea6f DE |
7636 | |
7637 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7638 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7639 | |
b3b3bada | 7640 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7641 | |
7642 | dwarf2_find_base_address (comp_unit_die, cu); | |
7643 | ||
7644 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7645 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7646 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7647 | &best_highpc, cu, pst); | |
7648 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7649 | { |
7650 | CORE_ADDR low | |
7651 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7652 | - baseaddr); | |
7653 | CORE_ADDR high | |
7654 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7655 | - baseaddr - 1); | |
7656 | /* Store the contiguous range if it is not empty; it can be | |
7657 | empty for CUs with no code. */ | |
84685904 | 7658 | addrmap_set_empty (per_bfd->partial_symtabs->psymtabs_addrmap, |
d320c2b5 | 7659 | low, high, pst); |
79748972 | 7660 | } |
0018ea6f DE |
7661 | |
7662 | /* Check if comp unit has_children. | |
7663 | If so, read the rest of the partial symbols from this comp unit. | |
7664 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7665 | if (comp_unit_die->has_children) |
0018ea6f DE |
7666 | { |
7667 | struct partial_die_info *first_die; | |
7668 | CORE_ADDR lowpc, highpc; | |
7669 | ||
7670 | lowpc = ((CORE_ADDR) -1); | |
7671 | highpc = ((CORE_ADDR) 0); | |
7672 | ||
7673 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7674 | ||
7675 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7676 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7677 | |
7678 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7679 | complaints from `maint check'. */ | |
7680 | if (lowpc == ((CORE_ADDR) -1)) | |
7681 | lowpc = highpc; | |
7682 | ||
7683 | /* If the compilation unit didn't have an explicit address range, | |
7684 | then use the information extracted from its child dies. */ | |
e385593e | 7685 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7686 | { |
7687 | best_lowpc = lowpc; | |
7688 | best_highpc = highpc; | |
7689 | } | |
7690 | } | |
4ae976d1 | 7691 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7692 | best_lowpc + baseaddr) |
7693 | - baseaddr); | |
4ae976d1 | 7694 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7695 | best_highpc + baseaddr) |
7696 | - baseaddr); | |
0018ea6f | 7697 | |
ae7754b2 | 7698 | pst->end (); |
0018ea6f | 7699 | |
ae640021 | 7700 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7701 | { |
7702 | int i; | |
ae640021 | 7703 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7704 | |
7705 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7706 | post-pass. */ | |
7707 | pst->number_of_dependencies = len; | |
a9342b62 | 7708 | pst->dependencies |
84685904 | 7709 | = per_bfd->partial_symtabs->allocate_dependencies (len); |
ae640021 AB |
7710 | for (i = 0; i < len; ++i) |
7711 | { | |
7712 | pst->dependencies[i] | |
7713 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7714 | } | |
0018ea6f | 7715 | |
ae640021 | 7716 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7717 | } |
7718 | ||
7719 | /* Get the list of files included in the current compilation unit, | |
7720 | and build a psymtab for each of them. */ | |
7721 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7722 | ||
6f738b01 SM |
7723 | dwarf_read_debug_printf ("Psymtab for %s unit @%s: %s - %s" |
7724 | ", %d global, %d static syms", | |
7725 | per_cu->is_debug_types ? "type" : "comp", | |
7726 | sect_offset_str (per_cu->sect_off), | |
7727 | paddress (gdbarch, pst->text_low (objfile)), | |
7728 | paddress (gdbarch, pst->text_high (objfile)), | |
7729 | (int) pst->global_psymbols.size (), | |
7730 | (int) pst->static_psymbols.size ()); | |
0018ea6f DE |
7731 | } |
7732 | ||
7733 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7734 | Process compilation unit THIS_CU for a psymtab. */ | |
7735 | ||
7736 | static void | |
ab432490 SM |
7737 | process_psymtab_comp_unit (dwarf2_per_cu_data *this_cu, |
7738 | dwarf2_per_objfile *per_objfile, | |
135f5437 | 7739 | bool want_partial_unit, |
b93601f3 | 7740 | enum language pretend_language) |
0018ea6f DE |
7741 | { |
7742 | /* If this compilation unit was already read in, free the | |
7743 | cached copy in order to read it in again. This is | |
7744 | necessary because we skipped some symbols when we first | |
7745 | read in the compilation unit (see load_partial_dies). | |
7746 | This problem could be avoided, but the benefit is unclear. */ | |
7188ed02 | 7747 | per_objfile->remove_cu (this_cu); |
0018ea6f | 7748 | |
2e671100 | 7749 | cutu_reader reader (this_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 | 7750 | |
58990295 TV |
7751 | switch (reader.comp_unit_die->tag) |
7752 | { | |
7753 | case DW_TAG_compile_unit: | |
7754 | this_cu->unit_type = DW_UT_compile; | |
7755 | break; | |
7756 | case DW_TAG_partial_unit: | |
7757 | this_cu->unit_type = DW_UT_partial; | |
7758 | break; | |
e77b0004 TV |
7759 | case DW_TAG_type_unit: |
7760 | this_cu->unit_type = DW_UT_type; | |
7761 | break; | |
58990295 | 7762 | default: |
702cf3f5 AB |
7763 | error (_("Dwarf Error: unexpected tag '%s' at offset %s [in module %s]"), |
7764 | dwarf_tag_name (reader.comp_unit_die->tag), | |
7765 | sect_offset_str (reader.cu->per_cu->sect_off), | |
7766 | objfile_name (per_objfile->objfile)); | |
58990295 TV |
7767 | } |
7768 | ||
c0ab21c2 | 7769 | if (reader.dummy_p) |
f1902523 | 7770 | { |
c0ab21c2 | 7771 | /* Nothing. */ |
f1902523 | 7772 | } |
c0ab21c2 | 7773 | else if (this_cu->is_debug_types) |
3e225074 TT |
7774 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7775 | reader.comp_unit_die); | |
135f5437 TT |
7776 | else if (want_partial_unit |
7777 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7778 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7779 | reader.comp_unit_die, | |
c0ab21c2 | 7780 | pretend_language); |
0018ea6f | 7781 | |
7188ed02 | 7782 | this_cu->lang = reader.cu->language; |
58990295 | 7783 | |
0018ea6f | 7784 | /* Age out any secondary CUs. */ |
7188ed02 | 7785 | per_objfile->age_comp_units (); |
0018ea6f | 7786 | } |
f4dc4d17 DE |
7787 | |
7788 | /* Reader function for build_type_psymtabs. */ | |
7789 | ||
7790 | static void | |
7791 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7792 | const gdb_byte *info_ptr, |
3e225074 | 7793 | struct die_info *type_unit_die) |
f4dc4d17 | 7794 | { |
976ca316 | 7795 | dwarf2_per_objfile *per_objfile = reader->cu->per_objfile; |
f4dc4d17 DE |
7796 | struct dwarf2_cu *cu = reader->cu; |
7797 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7798 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7799 | struct type_unit_group *tu_group; |
7800 | struct attribute *attr; | |
7801 | struct partial_die_info *first_die; | |
7802 | CORE_ADDR lowpc, highpc; | |
891813be | 7803 | dwarf2_psymtab *pst; |
f4dc4d17 | 7804 | |
0186c6a7 DE |
7805 | gdb_assert (per_cu->is_debug_types); |
7806 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7807 | |
3e225074 | 7808 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7809 | return; |
7810 | ||
052c8bb8 | 7811 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7812 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7813 | |
df07e2c7 | 7814 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7815 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7816 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7817 | |
7818 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
976ca316 | 7819 | pst = create_partial_symtab (per_cu, per_objfile, ""); |
6d94535f | 7820 | pst->anonymous = true; |
f4dc4d17 DE |
7821 | |
7822 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7823 | ||
7824 | lowpc = (CORE_ADDR) -1; | |
7825 | highpc = (CORE_ADDR) 0; | |
7826 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7827 | ||
ae7754b2 | 7828 | pst->end (); |
f4dc4d17 DE |
7829 | } |
7830 | ||
73051182 DE |
7831 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7832 | ||
7833 | struct tu_abbrev_offset | |
7834 | { | |
b2bdb8cf SM |
7835 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7836 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7837 | {} | |
7838 | ||
7839 | signatured_type *sig_type; | |
73051182 DE |
7840 | sect_offset abbrev_offset; |
7841 | }; | |
7842 | ||
484cf504 | 7843 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7844 | |
484cf504 TT |
7845 | static bool |
7846 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7847 | const struct tu_abbrev_offset &b) | |
73051182 | 7848 | { |
484cf504 | 7849 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7850 | } |
7851 | ||
7852 | /* Efficiently read all the type units. | |
7853 | This does the bulk of the work for build_type_psymtabs. | |
7854 | ||
7855 | The efficiency is because we sort TUs by the abbrev table they use and | |
7856 | only read each abbrev table once. In one program there are 200K TUs | |
7857 | sharing 8K abbrev tables. | |
7858 | ||
7859 | The main purpose of this function is to support building the | |
5989a64e | 7860 | dwarf2_per_objfile->per_bfd->type_unit_groups table. |
73051182 DE |
7861 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we |
7862 | can collapse the search space by grouping them by stmt_list. | |
7863 | The savings can be significant, in the same program from above the 200K TUs | |
7864 | share 8K stmt_list tables. | |
7865 | ||
7866 | FUNC is expected to call get_type_unit_group, which will create the | |
7867 | struct type_unit_group if necessary and add it to | |
5989a64e | 7868 | dwarf2_per_objfile->per_bfd->type_unit_groups. */ |
73051182 DE |
7869 | |
7870 | static void | |
976ca316 | 7871 | build_type_psymtabs_1 (dwarf2_per_objfile *per_objfile) |
73051182 | 7872 | { |
976ca316 | 7873 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
685af9cd | 7874 | abbrev_table_up abbrev_table; |
73051182 | 7875 | sect_offset abbrev_offset; |
73051182 DE |
7876 | |
7877 | /* It's up to the caller to not call us multiple times. */ | |
976ca316 | 7878 | gdb_assert (per_objfile->per_bfd->type_unit_groups == NULL); |
73051182 | 7879 | |
976ca316 | 7880 | if (per_objfile->per_bfd->all_type_units.empty ()) |
73051182 DE |
7881 | return; |
7882 | ||
7883 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7884 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7885 | read each abbrev table in. | |
7886 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7887 | This is simpler and efficient enough for now. | |
7888 | ||
7889 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7890 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7891 | stmt_list value too so in practice this should work well. | |
7892 | ||
7893 | The basic algorithm here is: | |
7894 | ||
7895 | sort TUs by abbrev table | |
7896 | for each TU with same abbrev table: | |
7897 | read abbrev table if first user | |
7898 | read TU top level DIE | |
7899 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7900 | call FUNC */ | |
7901 | ||
6f738b01 | 7902 | dwarf_read_debug_printf ("Building type unit groups ..."); |
73051182 DE |
7903 | |
7904 | /* Sort in a separate table to maintain the order of all_type_units | |
7905 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf | 7906 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
976ca316 | 7907 | sorted_by_abbrev.reserve (per_objfile->per_bfd->all_type_units.size ()); |
b2bdb8cf | 7908 | |
976ca316 | 7909 | for (signatured_type *sig_type : per_objfile->per_bfd->all_type_units) |
b2bdb8cf | 7910 | sorted_by_abbrev.emplace_back |
976ca316 | 7911 | (sig_type, read_abbrev_offset (per_objfile, sig_type->per_cu.section, |
b2bdb8cf | 7912 | sig_type->per_cu.sect_off)); |
73051182 | 7913 | |
484cf504 TT |
7914 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7915 | sort_tu_by_abbrev_offset); | |
73051182 | 7916 | |
9c541725 | 7917 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7918 | |
b2bdb8cf | 7919 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7920 | { |
73051182 DE |
7921 | /* Switch to the next abbrev table if necessary. */ |
7922 | if (abbrev_table == NULL | |
b2bdb8cf | 7923 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7924 | { |
b2bdb8cf | 7925 | abbrev_offset = tu.abbrev_offset; |
606decb2 | 7926 | per_objfile->per_bfd->abbrev.read (per_objfile->objfile); |
73051182 | 7927 | abbrev_table = |
606decb2 | 7928 | abbrev_table::read (&per_objfile->per_bfd->abbrev, abbrev_offset); |
73051182 DE |
7929 | ++tu_stats->nr_uniq_abbrev_tables; |
7930 | } | |
7931 | ||
976ca316 | 7932 | cutu_reader reader (&tu.sig_type->per_cu, per_objfile, |
2e671100 | 7933 | abbrev_table.get (), nullptr, false); |
c0ab21c2 TT |
7934 | if (!reader.dummy_p) |
7935 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7936 | reader.comp_unit_die); |
73051182 | 7937 | } |
6aa5f3a6 | 7938 | } |
73051182 | 7939 | |
6aa5f3a6 DE |
7940 | /* Print collected type unit statistics. */ |
7941 | ||
7942 | static void | |
976ca316 | 7943 | print_tu_stats (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 | 7944 | { |
976ca316 | 7945 | struct tu_stats *tu_stats = &per_objfile->per_bfd->tu_stats; |
6aa5f3a6 | 7946 | |
6f738b01 SM |
7947 | dwarf_read_debug_printf ("Type unit statistics:"); |
7948 | dwarf_read_debug_printf (" %zu TUs", | |
7949 | per_objfile->per_bfd->all_type_units.size ()); | |
7950 | dwarf_read_debug_printf (" %d uniq abbrev tables", | |
7951 | tu_stats->nr_uniq_abbrev_tables); | |
7952 | dwarf_read_debug_printf (" %d symtabs from stmt_list entries", | |
7953 | tu_stats->nr_symtabs); | |
7954 | dwarf_read_debug_printf (" %d symtab sharers", | |
7955 | tu_stats->nr_symtab_sharers); | |
7956 | dwarf_read_debug_printf (" %d type units without a stmt_list", | |
7957 | tu_stats->nr_stmt_less_type_units); | |
7958 | dwarf_read_debug_printf (" %d all_type_units reallocs", | |
7959 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7960 | } |
7961 | ||
f4dc4d17 DE |
7962 | /* Traversal function for build_type_psymtabs. */ |
7963 | ||
7964 | static int | |
7965 | build_type_psymtab_dependencies (void **slot, void *info) | |
7966 | { | |
976ca316 | 7967 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
84685904 | 7968 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
f4dc4d17 | 7969 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; |
094b34ac | 7970 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 7971 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 7972 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7973 | int i; |
7974 | ||
7975 | gdb_assert (len > 0); | |
197400e8 | 7976 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
7977 | |
7978 | pst->number_of_dependencies = len; | |
84685904 | 7979 | pst->dependencies = per_bfd->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7980 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7981 | { |
df07e2c7 | 7982 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
7983 | gdb_assert (iter->per_cu.is_debug_types); |
7984 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 7985 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7986 | } |
7987 | ||
df07e2c7 AB |
7988 | delete tu_group->tus; |
7989 | tu_group->tus = nullptr; | |
348e048f DE |
7990 | |
7991 | return 1; | |
7992 | } | |
7993 | ||
7994 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7995 | Build partial symbol tables for the .debug_types comp-units. */ | |
7996 | ||
7997 | static void | |
976ca316 | 7998 | build_type_psymtabs (dwarf2_per_objfile *per_objfile) |
348e048f | 7999 | { |
976ca316 | 8000 | if (! create_all_type_units (per_objfile)) |
348e048f DE |
8001 | return; |
8002 | ||
976ca316 | 8003 | build_type_psymtabs_1 (per_objfile); |
6aa5f3a6 | 8004 | } |
f4dc4d17 | 8005 | |
6aa5f3a6 DE |
8006 | /* Traversal function for process_skeletonless_type_unit. |
8007 | Read a TU in a DWO file and build partial symbols for it. */ | |
8008 | ||
8009 | static int | |
8010 | process_skeletonless_type_unit (void **slot, void *info) | |
8011 | { | |
8012 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
976ca316 | 8013 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) info; |
6aa5f3a6 DE |
8014 | struct signatured_type find_entry, *entry; |
8015 | ||
8016 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8017 | ||
976ca316 SM |
8018 | if (per_objfile->per_bfd->signatured_types == NULL) |
8019 | per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
6aa5f3a6 DE |
8020 | |
8021 | find_entry.signature = dwo_unit->signature; | |
976ca316 | 8022 | slot = htab_find_slot (per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 8023 | &find_entry, INSERT); |
6aa5f3a6 DE |
8024 | /* If we've already seen this type there's nothing to do. What's happening |
8025 | is we're doing our own version of comdat-folding here. */ | |
8026 | if (*slot != NULL) | |
8027 | return 1; | |
8028 | ||
8029 | /* This does the job that create_all_type_units would have done for | |
8030 | this TU. */ | |
976ca316 SM |
8031 | entry = add_type_unit (per_objfile, dwo_unit->signature, slot); |
8032 | fill_in_sig_entry_from_dwo_entry (per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8033 | *slot = entry; |
8034 | ||
8035 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
976ca316 | 8036 | cutu_reader reader (&entry->per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
8037 | if (!reader.dummy_p) |
8038 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 8039 | reader.comp_unit_die); |
6aa5f3a6 DE |
8040 | |
8041 | return 1; | |
8042 | } | |
8043 | ||
8044 | /* Traversal function for process_skeletonless_type_units. */ | |
8045 | ||
8046 | static int | |
8047 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8048 | { | |
8049 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8050 | ||
8051 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
8052 | htab_traverse_noresize (dwo_file->tus.get (), |
8053 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
8054 | |
8055 | return 1; | |
8056 | } | |
8057 | ||
8058 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8059 | This is needed in case a TU was emitted without its skeleton. | |
8060 | Note: This can't be done until we know what all the DWO files are. */ | |
8061 | ||
8062 | static void | |
976ca316 | 8063 | process_skeletonless_type_units (dwarf2_per_objfile *per_objfile) |
6aa5f3a6 DE |
8064 | { |
8065 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
976ca316 SM |
8066 | if (get_dwp_file (per_objfile) == NULL |
8067 | && per_objfile->per_bfd->dwo_files != NULL) | |
6aa5f3a6 | 8068 | { |
976ca316 | 8069 | htab_traverse_noresize (per_objfile->per_bfd->dwo_files.get (), |
6aa5f3a6 | 8070 | process_dwo_file_for_skeletonless_type_units, |
976ca316 | 8071 | per_objfile); |
6aa5f3a6 | 8072 | } |
348e048f DE |
8073 | } |
8074 | ||
ed2dc618 | 8075 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8076 | |
8077 | static void | |
976ca316 | 8078 | set_partial_user (dwarf2_per_objfile *per_objfile) |
95554aad | 8079 | { |
976ca316 | 8080 | for (dwarf2_per_cu_data *per_cu : per_objfile->per_bfd->all_comp_units) |
95554aad | 8081 | { |
891813be | 8082 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 8083 | |
36586728 TT |
8084 | if (pst == NULL) |
8085 | continue; | |
8086 | ||
b76e467d | 8087 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8088 | { |
8089 | /* Set the 'user' field only if it is not already set. */ | |
8090 | if (pst->dependencies[j]->user == NULL) | |
8091 | pst->dependencies[j]->user = pst; | |
8092 | } | |
8093 | } | |
8094 | } | |
8095 | ||
93311388 DE |
8096 | /* Build the partial symbol table by doing a quick pass through the |
8097 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8098 | |
93311388 | 8099 | static void |
976ca316 | 8100 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile *per_objfile) |
93311388 | 8101 | { |
976ca316 | 8102 | struct objfile *objfile = per_objfile->objfile; |
84685904 | 8103 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; |
93311388 | 8104 | |
6f738b01 SM |
8105 | dwarf_read_debug_printf ("Building psymtabs of objfile %s ...", |
8106 | objfile_name (objfile)); | |
45cfd468 | 8107 | |
76935768 | 8108 | scoped_restore restore_reading_psyms |
bab287cd | 8109 | = make_scoped_restore (&per_bfd->reading_partial_symbols, true); |
98bfdba5 | 8110 | |
84685904 | 8111 | per_bfd->info.read (objfile); |
91c24f0a | 8112 | |
93311388 DE |
8113 | /* Any cached compilation units will be linked by the per-objfile |
8114 | read_in_chain. Make sure to free them when we're done. */ | |
976ca316 | 8115 | free_cached_comp_units freer (per_objfile); |
72bf9492 | 8116 | |
976ca316 | 8117 | build_type_psymtabs (per_objfile); |
348e048f | 8118 | |
976ca316 | 8119 | create_all_comp_units (per_objfile); |
c906108c | 8120 | |
60606b2c TT |
8121 | /* Create a temporary address map on a temporary obstack. We later |
8122 | copy this to the final obstack. */ | |
8268c778 | 8123 | auto_obstack temp_obstack; |
791afaa2 TT |
8124 | |
8125 | scoped_restore save_psymtabs_addrmap | |
84685904 | 8126 | = make_scoped_restore (&per_bfd->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 8127 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 8128 | |
84685904 | 8129 | for (dwarf2_per_cu_data *per_cu : per_bfd->all_comp_units) |
3d5afab3 TV |
8130 | { |
8131 | if (per_cu->v.psymtab != NULL) | |
8132 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
8133 | continue; | |
976ca316 | 8134 | process_psymtab_comp_unit (per_cu, per_objfile, false, |
ab432490 | 8135 | language_minimal); |
3d5afab3 | 8136 | } |
ff013f42 | 8137 | |
6aa5f3a6 | 8138 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
976ca316 | 8139 | process_skeletonless_type_units (per_objfile); |
6aa5f3a6 DE |
8140 | |
8141 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
84685904 | 8142 | if (per_bfd->type_unit_groups != NULL) |
6aa5f3a6 | 8143 | { |
84685904 | 8144 | htab_traverse_noresize (per_bfd->type_unit_groups.get (), |
976ca316 | 8145 | build_type_psymtab_dependencies, per_objfile); |
6aa5f3a6 DE |
8146 | } |
8147 | ||
6f738b01 | 8148 | if (dwarf_read_debug > 0) |
976ca316 | 8149 | print_tu_stats (per_objfile); |
6aa5f3a6 | 8150 | |
976ca316 | 8151 | set_partial_user (per_objfile); |
95554aad | 8152 | |
84685904 TT |
8153 | per_bfd->partial_symtabs->psymtabs_addrmap |
8154 | = addrmap_create_fixed (per_bfd->partial_symtabs->psymtabs_addrmap, | |
8155 | per_bfd->partial_symtabs->obstack ()); | |
791afaa2 TT |
8156 | /* At this point we want to keep the address map. */ |
8157 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8158 | |
6f738b01 SM |
8159 | dwarf_read_debug_printf ("Done building psymtabs of %s", |
8160 | objfile_name (objfile)); | |
ae038cb0 DJ |
8161 | } |
8162 | ||
dee91e82 DE |
8163 | /* Load the partial DIEs for a secondary CU into memory. |
8164 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8165 | |
dee91e82 | 8166 | static void |
ab432490 | 8167 | load_partial_comp_unit (dwarf2_per_cu_data *this_cu, |
2e671100 SM |
8168 | dwarf2_per_objfile *per_objfile, |
8169 | dwarf2_cu *existing_cu) | |
dee91e82 | 8170 | { |
2e671100 | 8171 | cutu_reader reader (this_cu, per_objfile, nullptr, existing_cu, false); |
c0ab21c2 TT |
8172 | |
8173 | if (!reader.dummy_p) | |
8174 | { | |
8175 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
8176 | language_minimal); | |
8177 | ||
8178 | /* Check if comp unit has_children. | |
8179 | If so, read the rest of the partial symbols from this comp unit. | |
8180 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 8181 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 8182 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
8183 | |
8184 | reader.keep (); | |
c0ab21c2 | 8185 | } |
ae038cb0 DJ |
8186 | } |
8187 | ||
ae038cb0 | 8188 | static void |
976ca316 | 8189 | read_comp_units_from_section (dwarf2_per_objfile *per_objfile, |
36586728 | 8190 | struct dwarf2_section_info *section, |
f1902523 | 8191 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8192 | unsigned int is_dwz) |
ae038cb0 | 8193 | { |
d521ce57 | 8194 | const gdb_byte *info_ptr; |
976ca316 | 8195 | struct objfile *objfile = per_objfile->objfile; |
be391dca | 8196 | |
6f738b01 SM |
8197 | dwarf_read_debug_printf ("Reading %s for %s", |
8198 | section->get_name (), | |
8199 | section->get_file_name ()); | |
bf6af496 | 8200 | |
96b79293 | 8201 | section->read (objfile); |
ae038cb0 | 8202 | |
36586728 | 8203 | info_ptr = section->buffer; |
6e70227d | 8204 | |
36586728 | 8205 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8206 | { |
ae038cb0 | 8207 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8208 | |
9c541725 | 8209 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8210 | |
f1902523 | 8211 | comp_unit_head cu_header; |
976ca316 | 8212 | read_and_check_comp_unit_head (per_objfile, &cu_header, section, |
ed2dc618 SM |
8213 | abbrev_section, info_ptr, |
8214 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8215 | |
8216 | /* Save the compilation unit for later lookup. */ | |
f1902523 | 8217 | if (cu_header.unit_type != DW_UT_type) |
976ca316 | 8218 | this_cu = per_objfile->per_bfd->allocate_per_cu (); |
f1902523 JK |
8219 | else |
8220 | { | |
976ca316 | 8221 | auto sig_type = per_objfile->per_bfd->allocate_signatured_type (); |
f1902523 JK |
8222 | sig_type->signature = cu_header.signature; |
8223 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8224 | this_cu = &sig_type->per_cu; | |
8225 | } | |
8226 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8227 | this_cu->sect_off = sect_off; |
f1902523 | 8228 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8229 | this_cu->is_dwz = is_dwz; |
8a0459fd | 8230 | this_cu->section = section; |
ae038cb0 | 8231 | |
976ca316 | 8232 | per_objfile->per_bfd->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8233 | |
8234 | info_ptr = info_ptr + this_cu->length; | |
8235 | } | |
36586728 TT |
8236 | } |
8237 | ||
8238 | /* Create a list of all compilation units in OBJFILE. | |
8239 | This is only done for -readnow and building partial symtabs. */ | |
8240 | ||
8241 | static void | |
976ca316 | 8242 | create_all_comp_units (dwarf2_per_objfile *per_objfile) |
36586728 | 8243 | { |
976ca316 SM |
8244 | gdb_assert (per_objfile->per_bfd->all_comp_units.empty ()); |
8245 | read_comp_units_from_section (per_objfile, &per_objfile->per_bfd->info, | |
8246 | &per_objfile->per_bfd->abbrev, 0); | |
36586728 | 8247 | |
976ca316 | 8248 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd); |
4db1a1dc | 8249 | if (dwz != NULL) |
976ca316 | 8250 | read_comp_units_from_section (per_objfile, &dwz->info, &dwz->abbrev, 1); |
c906108c SS |
8251 | } |
8252 | ||
5734ee8b | 8253 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8254 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8255 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8256 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8257 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8258 | |
72bf9492 DJ |
8259 | static void |
8260 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8261 | CORE_ADDR *highpc, int set_addrmap, |
8262 | struct dwarf2_cu *cu) | |
c906108c | 8263 | { |
72bf9492 | 8264 | struct partial_die_info *pdi; |
c906108c | 8265 | |
91c24f0a DC |
8266 | /* Now, march along the PDI's, descending into ones which have |
8267 | interesting children but skipping the children of the other ones, | |
8268 | until we reach the end of the compilation unit. */ | |
c906108c | 8269 | |
72bf9492 | 8270 | pdi = first_die; |
91c24f0a | 8271 | |
72bf9492 DJ |
8272 | while (pdi != NULL) |
8273 | { | |
52356b79 | 8274 | pdi->fixup (cu); |
c906108c | 8275 | |
f55ee35c | 8276 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8277 | children, so we need to look at them. Ditto for anonymous |
8278 | enums. */ | |
933c6fe4 | 8279 | |
7d00ffec | 8280 | if (pdi->raw_name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8281 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8282 | || pdi->tag == DW_TAG_imported_unit |
8283 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8284 | { |
72bf9492 | 8285 | switch (pdi->tag) |
c906108c SS |
8286 | { |
8287 | case DW_TAG_subprogram: | |
b1dc1806 | 8288 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8289 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
f9b5d5ea TV |
8290 | if (cu->language == language_cplus) |
8291 | scan_partial_symbols (pdi->die_child, lowpc, highpc, | |
8292 | set_addrmap, cu); | |
c906108c | 8293 | break; |
72929c62 | 8294 | case DW_TAG_constant: |
c906108c SS |
8295 | case DW_TAG_variable: |
8296 | case DW_TAG_typedef: | |
91c24f0a | 8297 | case DW_TAG_union_type: |
317d2668 TV |
8298 | if (!pdi->is_declaration |
8299 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 8300 | { |
72bf9492 | 8301 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8302 | } |
8303 | break; | |
c906108c | 8304 | case DW_TAG_class_type: |
680b30c7 | 8305 | case DW_TAG_interface_type: |
c906108c | 8306 | case DW_TAG_structure_type: |
72bf9492 | 8307 | if (!pdi->is_declaration) |
c906108c | 8308 | { |
72bf9492 | 8309 | add_partial_symbol (pdi, cu); |
c906108c | 8310 | } |
b7fee5a3 KS |
8311 | if ((cu->language == language_rust |
8312 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8313 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8314 | set_addrmap, cu); | |
c906108c | 8315 | break; |
91c24f0a | 8316 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8317 | if (!pdi->is_declaration) |
8318 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8319 | break; |
8320 | case DW_TAG_base_type: | |
dda83cd7 | 8321 | case DW_TAG_subrange_type: |
c906108c | 8322 | /* File scope base type definitions are added to the partial |
dda83cd7 | 8323 | symbol table. */ |
72bf9492 | 8324 | add_partial_symbol (pdi, cu); |
c906108c | 8325 | break; |
d9fa45fe | 8326 | case DW_TAG_namespace: |
cdc07690 | 8327 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8328 | break; |
5d7cb8df | 8329 | case DW_TAG_module: |
59c35742 AB |
8330 | if (!pdi->is_declaration) |
8331 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8332 | break; |
95554aad TT |
8333 | case DW_TAG_imported_unit: |
8334 | { | |
8335 | struct dwarf2_per_cu_data *per_cu; | |
8336 | ||
f4dc4d17 DE |
8337 | /* For now we don't handle imported units in type units. */ |
8338 | if (cu->per_cu->is_debug_types) | |
8339 | { | |
8340 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8341 | " supported in type units [in module %s]"), | |
5e22e966 | 8342 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
8343 | } |
8344 | ||
e3b94546 | 8345 | per_cu = dwarf2_find_containing_comp_unit |
5e22e966 | 8346 | (pdi->d.sect_off, pdi->is_dwz, cu->per_objfile); |
95554aad TT |
8347 | |
8348 | /* Go read the partial unit, if needed. */ | |
8349 | if (per_cu->v.psymtab == NULL) | |
ab432490 SM |
8350 | process_psymtab_comp_unit (per_cu, cu->per_objfile, true, |
8351 | cu->language); | |
95554aad | 8352 | |
ae640021 | 8353 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8354 | } |
8355 | break; | |
74921315 KS |
8356 | case DW_TAG_imported_declaration: |
8357 | add_partial_symbol (pdi, cu); | |
8358 | break; | |
c906108c SS |
8359 | default: |
8360 | break; | |
8361 | } | |
8362 | } | |
8363 | ||
72bf9492 DJ |
8364 | /* If the die has a sibling, skip to the sibling. */ |
8365 | ||
8366 | pdi = pdi->die_sibling; | |
8367 | } | |
8368 | } | |
8369 | ||
8370 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8371 | |
72bf9492 | 8372 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8373 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8374 | Enumerators are an exception; they use the scope of their parent |
8375 | enumeration type, i.e. the name of the enumeration type is not | |
8376 | prepended to the enumerator. | |
91c24f0a | 8377 | |
72bf9492 DJ |
8378 | There are two complexities. One is DW_AT_specification; in this |
8379 | case "parent" means the parent of the target of the specification, | |
8380 | instead of the direct parent of the DIE. The other is compilers | |
8381 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8382 | the fully qualified name of structure types from their members' | |
8383 | linkage names. This must be done using the DIE's children rather | |
8384 | than the children of any DW_AT_specification target. We only need | |
8385 | to do this for structures at the top level, i.e. if the target of | |
8386 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8387 | have a parent. */ | |
8388 | ||
8389 | /* Compute the scope prefix associated with PDI's parent, in | |
8390 | compilation unit CU. The result will be allocated on CU's | |
8391 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8392 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8393 | static const char * |
72bf9492 DJ |
8394 | partial_die_parent_scope (struct partial_die_info *pdi, |
8395 | struct dwarf2_cu *cu) | |
8396 | { | |
15d034d0 | 8397 | const char *grandparent_scope; |
72bf9492 | 8398 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8399 | |
72bf9492 DJ |
8400 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8401 | then this means the parent of the specification DIE. */ | |
8402 | ||
8403 | real_pdi = pdi; | |
72bf9492 | 8404 | while (real_pdi->has_specification) |
fb816e8b | 8405 | { |
122cf0f2 AB |
8406 | auto res = find_partial_die (real_pdi->spec_offset, |
8407 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8408 | real_pdi = res.pdi; |
8409 | cu = res.cu; | |
8410 | } | |
72bf9492 DJ |
8411 | |
8412 | parent = real_pdi->die_parent; | |
8413 | if (parent == NULL) | |
8414 | return NULL; | |
8415 | ||
8416 | if (parent->scope_set) | |
8417 | return parent->scope; | |
8418 | ||
52356b79 | 8419 | parent->fixup (cu); |
72bf9492 | 8420 | |
10b3939b | 8421 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8422 | |
acebe513 UW |
8423 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8424 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8425 | Work around this problem here. */ | |
8426 | if (cu->language == language_cplus | |
6e70227d | 8427 | && parent->tag == DW_TAG_namespace |
7d00ffec | 8428 | && strcmp (parent->name (cu), "::") == 0 |
acebe513 UW |
8429 | && grandparent_scope == NULL) |
8430 | { | |
8431 | parent->scope = NULL; | |
8432 | parent->scope_set = 1; | |
8433 | return NULL; | |
8434 | } | |
8435 | ||
0a4b0913 | 8436 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8437 | if (pdi->tag == DW_TAG_enumerator) |
8438 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8439 | parent->scope = grandparent_scope; | |
8440 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8441 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8442 | || parent->tag == DW_TAG_structure_type |
8443 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8444 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8445 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8446 | || parent->tag == DW_TAG_enumeration_type |
8447 | || (cu->language == language_fortran | |
8448 | && parent->tag == DW_TAG_subprogram | |
8449 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8450 | { |
8451 | if (grandparent_scope == NULL) | |
7d00ffec | 8452 | parent->scope = parent->name (cu); |
72bf9492 | 8453 | else |
3e43a32a MS |
8454 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8455 | grandparent_scope, | |
7d00ffec | 8456 | parent->name (cu), 0, cu); |
72bf9492 | 8457 | } |
72bf9492 DJ |
8458 | else |
8459 | { | |
8460 | /* FIXME drow/2004-04-01: What should we be doing with | |
8461 | function-local names? For partial symbols, we should probably be | |
8462 | ignoring them. */ | |
fa9c3fa0 TT |
8463 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8464 | dwarf_tag_name (parent->tag), | |
8465 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8466 | parent->scope = grandparent_scope; |
c906108c SS |
8467 | } |
8468 | ||
72bf9492 DJ |
8469 | parent->scope_set = 1; |
8470 | return parent->scope; | |
8471 | } | |
8472 | ||
8473 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8474 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8475 | |
43816ebc | 8476 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8477 | partial_die_full_name (struct partial_die_info *pdi, |
8478 | struct dwarf2_cu *cu) | |
8479 | { | |
15d034d0 | 8480 | const char *parent_scope; |
72bf9492 | 8481 | |
98bfdba5 PA |
8482 | /* If this is a template instantiation, we can not work out the |
8483 | template arguments from partial DIEs. So, unfortunately, we have | |
8484 | to go through the full DIEs. At least any work we do building | |
8485 | types here will be reused if full symbols are loaded later. */ | |
8486 | if (pdi->has_template_arguments) | |
8487 | { | |
52356b79 | 8488 | pdi->fixup (cu); |
98bfdba5 | 8489 | |
7d00ffec | 8490 | if (pdi->name (cu) != NULL && strchr (pdi->name (cu), '<') == NULL) |
98bfdba5 PA |
8491 | { |
8492 | struct die_info *die; | |
8493 | struct attribute attr; | |
8494 | struct dwarf2_cu *ref_cu = cu; | |
8495 | ||
b64f50a1 | 8496 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8497 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8498 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8499 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8500 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8501 | ||
43816ebc | 8502 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8503 | } |
8504 | } | |
8505 | ||
72bf9492 DJ |
8506 | parent_scope = partial_die_parent_scope (pdi, cu); |
8507 | if (parent_scope == NULL) | |
8508 | return NULL; | |
8509 | else | |
43816ebc | 8510 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
7d00ffec TT |
8511 | pdi->name (cu), |
8512 | 0, cu)); | |
c906108c SS |
8513 | } |
8514 | ||
8515 | static void | |
72bf9492 | 8516 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8517 | { |
976ca316 SM |
8518 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
8519 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 8520 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8521 | CORE_ADDR addr = 0; |
15d034d0 | 8522 | const char *actual_name = NULL; |
e142c38c DJ |
8523 | CORE_ADDR baseaddr; |
8524 | ||
b3b3bada | 8525 | baseaddr = objfile->text_section_offset (); |
c906108c | 8526 | |
43816ebc TT |
8527 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8528 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8529 | if (built_actual_name != NULL) |
43816ebc | 8530 | actual_name = built_actual_name.get (); |
63d06c5c | 8531 | |
72bf9492 | 8532 | if (actual_name == NULL) |
7d00ffec | 8533 | actual_name = pdi->name (cu); |
72bf9492 | 8534 | |
76e288d1 TT |
8535 | partial_symbol psymbol; |
8536 | memset (&psymbol, 0, sizeof (psymbol)); | |
8537 | psymbol.ginfo.set_language (cu->language, &objfile->objfile_obstack); | |
a52d653e | 8538 | psymbol.ginfo.set_section_index (-1); |
76e288d1 TT |
8539 | |
8540 | /* The code below indicates that the psymbol should be installed by | |
8541 | setting this. */ | |
8542 | gdb::optional<psymbol_placement> where; | |
8543 | ||
c906108c SS |
8544 | switch (pdi->tag) |
8545 | { | |
b1dc1806 | 8546 | case DW_TAG_inlined_subroutine: |
c906108c | 8547 | case DW_TAG_subprogram: |
79748972 TT |
8548 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8549 | - baseaddr); | |
0a4b0913 AB |
8550 | if (pdi->is_external |
8551 | || cu->language == language_ada | |
8552 | || (cu->language == language_fortran | |
8553 | && pdi->die_parent != NULL | |
8554 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8555 | { | |
dda83cd7 SM |
8556 | /* Normally, only "external" DIEs are part of the global scope. |
8557 | But in Ada and Fortran, we want to be able to access nested | |
8558 | procedures globally. So all Ada and Fortran subprograms are | |
8559 | stored in the global scope. */ | |
76e288d1 | 8560 | where = psymbol_placement::GLOBAL; |
c906108c SS |
8561 | } |
8562 | else | |
76e288d1 TT |
8563 | where = psymbol_placement::STATIC; |
8564 | ||
8565 | psymbol.domain = VAR_DOMAIN; | |
8566 | psymbol.aclass = LOC_BLOCK; | |
a52d653e | 8567 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 | 8568 | psymbol.ginfo.value.address = addr; |
0c1b455e TT |
8569 | |
8570 | if (pdi->main_subprogram && actual_name != NULL) | |
8571 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8572 | break; |
72929c62 | 8573 | case DW_TAG_constant: |
76e288d1 TT |
8574 | psymbol.domain = VAR_DOMAIN; |
8575 | psymbol.aclass = LOC_STATIC; | |
8576 | where = (pdi->is_external | |
8577 | ? psymbol_placement::GLOBAL | |
8578 | : psymbol_placement::STATIC); | |
72929c62 | 8579 | break; |
c906108c | 8580 | case DW_TAG_variable: |
95554aad TT |
8581 | if (pdi->d.locdesc) |
8582 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8583 | |
95554aad | 8584 | if (pdi->d.locdesc |
caac4577 | 8585 | && addr == 0 |
976ca316 | 8586 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
8587 | { |
8588 | /* A global or static variable may also have been stripped | |
8589 | out by the linker if unused, in which case its address | |
8590 | will be nullified; do not add such variables into partial | |
8591 | symbol table then. */ | |
8592 | } | |
8593 | else if (pdi->is_external) | |
c906108c SS |
8594 | { |
8595 | /* Global Variable. | |
8596 | Don't enter into the minimal symbol tables as there is | |
8597 | a minimal symbol table entry from the ELF symbols already. | |
8598 | Enter into partial symbol table if it has a location | |
8599 | descriptor or a type. | |
8600 | If the location descriptor is missing, new_symbol will create | |
8601 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8602 | be determined from the minimal symbol table whenever the variable | |
8603 | is referenced. | |
8604 | The address for the partial symbol table entry is not | |
8605 | used by GDB, but it comes in handy for debugging partial symbol | |
8606 | table building. */ | |
8607 | ||
95554aad | 8608 | if (pdi->d.locdesc || pdi->has_type) |
76e288d1 TT |
8609 | { |
8610 | psymbol.domain = VAR_DOMAIN; | |
8611 | psymbol.aclass = LOC_STATIC; | |
a52d653e | 8612 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 TT |
8613 | psymbol.ginfo.value.address = addr; |
8614 | where = psymbol_placement::GLOBAL; | |
8615 | } | |
c906108c SS |
8616 | } |
8617 | else | |
8618 | { | |
ff908ebf AW |
8619 | int has_loc = pdi->d.locdesc != NULL; |
8620 | ||
8621 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8622 | without location descriptors or constant values). */ | |
8623 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8624 | return; |
ff908ebf | 8625 | |
76e288d1 TT |
8626 | psymbol.domain = VAR_DOMAIN; |
8627 | psymbol.aclass = LOC_STATIC; | |
a52d653e | 8628 | psymbol.ginfo.set_section_index (SECT_OFF_TEXT (objfile)); |
76e288d1 TT |
8629 | if (has_loc) |
8630 | psymbol.ginfo.value.address = addr; | |
8631 | where = psymbol_placement::STATIC; | |
c906108c SS |
8632 | } |
8633 | break; | |
d8f62e84 | 8634 | case DW_TAG_array_type: |
c906108c SS |
8635 | case DW_TAG_typedef: |
8636 | case DW_TAG_base_type: | |
a02abb62 | 8637 | case DW_TAG_subrange_type: |
76e288d1 TT |
8638 | psymbol.domain = VAR_DOMAIN; |
8639 | psymbol.aclass = LOC_TYPEDEF; | |
8640 | where = psymbol_placement::STATIC; | |
c906108c | 8641 | break; |
74921315 | 8642 | case DW_TAG_imported_declaration: |
72bf9492 | 8643 | case DW_TAG_namespace: |
76e288d1 TT |
8644 | psymbol.domain = VAR_DOMAIN; |
8645 | psymbol.aclass = LOC_TYPEDEF; | |
8646 | where = psymbol_placement::GLOBAL; | |
72bf9492 | 8647 | break; |
530e8392 | 8648 | case DW_TAG_module: |
a5fd13a9 | 8649 | /* With Fortran 77 there might be a "BLOCK DATA" module |
dda83cd7 SM |
8650 | available without any name. If so, we skip the module as it |
8651 | doesn't bring any value. */ | |
a5fd13a9 | 8652 | if (actual_name != nullptr) |
76e288d1 TT |
8653 | { |
8654 | psymbol.domain = MODULE_DOMAIN; | |
8655 | psymbol.aclass = LOC_TYPEDEF; | |
8656 | where = psymbol_placement::GLOBAL; | |
8657 | } | |
530e8392 | 8658 | break; |
c906108c | 8659 | case DW_TAG_class_type: |
680b30c7 | 8660 | case DW_TAG_interface_type: |
c906108c SS |
8661 | case DW_TAG_structure_type: |
8662 | case DW_TAG_union_type: | |
8663 | case DW_TAG_enumeration_type: | |
fa4028e9 | 8664 | /* Skip external references. The DWARF standard says in the section |
dda83cd7 SM |
8665 | about "Structure, Union, and Class Type Entries": "An incomplete |
8666 | structure, union or class type is represented by a structure, | |
8667 | union or class entry that does not have a byte size attribute | |
8668 | and that has a DW_AT_declaration attribute." */ | |
fa4028e9 | 8669 | if (!pdi->has_byte_size && pdi->is_declaration) |
43816ebc | 8670 | return; |
fa4028e9 | 8671 | |
63d06c5c DC |
8672 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8673 | static vs. global. */ | |
76e288d1 TT |
8674 | psymbol.domain = STRUCT_DOMAIN; |
8675 | psymbol.aclass = LOC_TYPEDEF; | |
8676 | where = (cu->language == language_cplus | |
8677 | ? psymbol_placement::GLOBAL | |
8678 | : psymbol_placement::STATIC); | |
c906108c SS |
8679 | break; |
8680 | case DW_TAG_enumerator: | |
76e288d1 TT |
8681 | psymbol.domain = VAR_DOMAIN; |
8682 | psymbol.aclass = LOC_CONST; | |
8683 | where = (cu->language == language_cplus | |
8684 | ? psymbol_placement::GLOBAL | |
8685 | : psymbol_placement::STATIC); | |
c906108c SS |
8686 | break; |
8687 | default: | |
8688 | break; | |
8689 | } | |
76e288d1 TT |
8690 | |
8691 | if (where.has_value ()) | |
8692 | { | |
f049a313 TT |
8693 | if (built_actual_name != nullptr) |
8694 | actual_name = objfile->intern (actual_name); | |
bcfe6157 TT |
8695 | if (pdi->linkage_name == nullptr || cu->language == language_ada) |
8696 | psymbol.ginfo.set_linkage_name (actual_name); | |
8697 | else | |
8698 | { | |
8699 | psymbol.ginfo.set_demangled_name (actual_name, | |
8700 | &objfile->objfile_obstack); | |
8701 | psymbol.ginfo.set_linkage_name (pdi->linkage_name); | |
8702 | } | |
7b249e47 TT |
8703 | cu->per_cu->v.psymtab->add_psymbol |
8704 | (psymbol, *where, per_objfile->per_bfd->partial_symtabs.get (), | |
8705 | objfile); | |
76e288d1 | 8706 | } |
c906108c SS |
8707 | } |
8708 | ||
5c4e30ca DC |
8709 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8710 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8711 | the name of the enclosing namespace. */ | |
91c24f0a | 8712 | |
72bf9492 DJ |
8713 | static void |
8714 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8715 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8716 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8717 | { |
72bf9492 | 8718 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8719 | |
72bf9492 | 8720 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8721 | |
8722 | /* Now scan partial symbols in that namespace. */ | |
8723 | ||
91c24f0a | 8724 | if (pdi->has_children) |
cdc07690 | 8725 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8726 | } |
8727 | ||
5d7cb8df JK |
8728 | /* Read a partial die corresponding to a Fortran module. */ |
8729 | ||
8730 | static void | |
8731 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8732 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8733 | { |
530e8392 KB |
8734 | /* Add a symbol for the namespace. */ |
8735 | ||
8736 | add_partial_symbol (pdi, cu); | |
8737 | ||
f55ee35c | 8738 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8739 | |
8740 | if (pdi->has_children) | |
cdc07690 | 8741 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8742 | } |
8743 | ||
b1dc1806 XR |
8744 | /* Read a partial die corresponding to a subprogram or an inlined |
8745 | subprogram and create a partial symbol for that subprogram. | |
8746 | When the CU language allows it, this routine also defines a partial | |
8747 | symbol for each nested subprogram that this subprogram contains. | |
8748 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8749 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8750 | |
cdc07690 YQ |
8751 | PDI may also be a lexical block, in which case we simply search |
8752 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8753 | Again, this is only performed when the CU language allows this |
8754 | type of definitions. */ | |
8755 | ||
8756 | static void | |
8757 | add_partial_subprogram (struct partial_die_info *pdi, | |
8758 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8759 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8760 | { |
b1dc1806 | 8761 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8762 | { |
8763 | if (pdi->has_pc_info) | |
dda83cd7 SM |
8764 | { |
8765 | if (pdi->lowpc < *lowpc) | |
8766 | *lowpc = pdi->lowpc; | |
8767 | if (pdi->highpc > *highpc) | |
8768 | *highpc = pdi->highpc; | |
cdc07690 | 8769 | if (set_addrmap) |
5734ee8b | 8770 | { |
5e22e966 | 8771 | struct objfile *objfile = cu->per_objfile->objfile; |
84685904 | 8772 | dwarf2_per_bfd *per_bfd = cu->per_objfile->per_bfd; |
08feed99 | 8773 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8774 | CORE_ADDR baseaddr; |
b926417a TT |
8775 | CORE_ADDR this_highpc; |
8776 | CORE_ADDR this_lowpc; | |
5734ee8b | 8777 | |
b3b3bada | 8778 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8779 | this_lowpc |
8780 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8781 | pdi->lowpc + baseaddr) | |
8782 | - baseaddr); | |
8783 | this_highpc | |
8784 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8785 | pdi->highpc + baseaddr) | |
8786 | - baseaddr); | |
84685904 | 8787 | addrmap_set_empty (per_bfd->partial_symtabs->psymtabs_addrmap, |
b926417a | 8788 | this_lowpc, this_highpc - 1, |
9291a0cd | 8789 | cu->per_cu->v.psymtab); |
5734ee8b | 8790 | } |
dda83cd7 | 8791 | } |
481860b3 GB |
8792 | |
8793 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8794 | { | |
dda83cd7 | 8795 | if (!pdi->is_declaration) |
e8d05480 JB |
8796 | /* Ignore subprogram DIEs that do not have a name, they are |
8797 | illegal. Do not emit a complaint at this point, we will | |
8798 | do so when we convert this psymtab into a symtab. */ | |
7d00ffec | 8799 | if (pdi->name (cu)) |
e8d05480 | 8800 | add_partial_symbol (pdi, cu); |
dda83cd7 | 8801 | } |
bc30ff58 | 8802 | } |
6e70227d | 8803 | |
bc30ff58 JB |
8804 | if (! pdi->has_children) |
8805 | return; | |
8806 | ||
0a4b0913 | 8807 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8808 | { |
8809 | pdi = pdi->die_child; | |
8810 | while (pdi != NULL) | |
8811 | { | |
52356b79 | 8812 | pdi->fixup (cu); |
bc30ff58 | 8813 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8814 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8815 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8816 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8817 | pdi = pdi->die_sibling; |
8818 | } | |
8819 | } | |
8820 | } | |
8821 | ||
91c24f0a DC |
8822 | /* Read a partial die corresponding to an enumeration type. */ |
8823 | ||
72bf9492 DJ |
8824 | static void |
8825 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8826 | struct dwarf2_cu *cu) | |
91c24f0a | 8827 | { |
72bf9492 | 8828 | struct partial_die_info *pdi; |
91c24f0a | 8829 | |
7d00ffec | 8830 | if (enum_pdi->name (cu) != NULL) |
72bf9492 DJ |
8831 | add_partial_symbol (enum_pdi, cu); |
8832 | ||
8833 | pdi = enum_pdi->die_child; | |
8834 | while (pdi) | |
91c24f0a | 8835 | { |
7d00ffec | 8836 | if (pdi->tag != DW_TAG_enumerator || pdi->raw_name == NULL) |
b98664d3 | 8837 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8838 | else |
72bf9492 DJ |
8839 | add_partial_symbol (pdi, cu); |
8840 | pdi = pdi->die_sibling; | |
91c24f0a | 8841 | } |
91c24f0a DC |
8842 | } |
8843 | ||
6caca83c CC |
8844 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8845 | ||
8846 | static unsigned int | |
d521ce57 | 8847 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8848 | { |
8849 | unsigned int bytes_read; | |
8850 | ||
8851 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8852 | } | |
8853 | ||
685af9cd TT |
8854 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8855 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8856 | ||
4bb7a0a7 DJ |
8857 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8858 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8859 | the initial number. */ | |
8860 | ||
7c32eebb | 8861 | static const struct abbrev_info * |
685af9cd TT |
8862 | peek_die_abbrev (const die_reader_specs &reader, |
8863 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8864 | { |
685af9cd | 8865 | dwarf2_cu *cu = reader.cu; |
0280fdcc | 8866 | bfd *abfd = reader.abfd; |
685af9cd TT |
8867 | unsigned int abbrev_number |
8868 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8869 | |
8870 | if (abbrev_number == 0) | |
8871 | return NULL; | |
8872 | ||
7c32eebb TT |
8873 | const abbrev_info *abbrev |
8874 | = reader.abbrev_table->lookup_abbrev (abbrev_number); | |
4bb7a0a7 DJ |
8875 | if (!abbrev) |
8876 | { | |
422b9917 | 8877 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8878 | " at offset %s [in module %s]"), |
422b9917 | 8879 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8880 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8881 | } |
8882 | ||
8883 | return abbrev; | |
8884 | } | |
8885 | ||
93311388 DE |
8886 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8887 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8888 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8889 | ||
d521ce57 TT |
8890 | static const gdb_byte * |
8891 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8892 | { |
4bb7a0a7 DJ |
8893 | while (1) |
8894 | { | |
685af9cd | 8895 | unsigned int bytes_read; |
7c32eebb TT |
8896 | const abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, |
8897 | &bytes_read); | |
685af9cd | 8898 | |
4bb7a0a7 DJ |
8899 | if (abbrev == NULL) |
8900 | return info_ptr + bytes_read; | |
8901 | else | |
dee91e82 | 8902 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8903 | } |
8904 | } | |
8905 | ||
93311388 DE |
8906 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8907 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8908 | abbrev corresponding to that skipped uleb128 should be passed in |
8909 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8910 | children. */ | |
8911 | ||
d521ce57 TT |
8912 | static const gdb_byte * |
8913 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
7c32eebb | 8914 | const struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8915 | { |
8916 | unsigned int bytes_read; | |
8917 | struct attribute attr; | |
dee91e82 DE |
8918 | bfd *abfd = reader->abfd; |
8919 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8920 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8921 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8922 | unsigned int form, i; |
8923 | ||
8924 | for (i = 0; i < abbrev->num_attrs; i++) | |
8925 | { | |
8926 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8927 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8928 | { | |
7a5f294d | 8929 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 8930 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8931 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8932 | else |
b9502d3f | 8933 | { |
0826b30a | 8934 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8935 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8936 | |
8937 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8938 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8939 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8940 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8941 | else |
8942 | return sibling_ptr; | |
8943 | } | |
4bb7a0a7 DJ |
8944 | } |
8945 | ||
8946 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8947 | form = abbrev->attrs[i].form; | |
8948 | skip_attribute: | |
8949 | switch (form) | |
8950 | { | |
4bb7a0a7 | 8951 | case DW_FORM_ref_addr: |
ae411497 TT |
8952 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8953 | and later it is offset sized. */ | |
8954 | if (cu->header.version == 2) | |
8955 | info_ptr += cu->header.addr_size; | |
8956 | else | |
8957 | info_ptr += cu->header.offset_size; | |
8958 | break; | |
36586728 TT |
8959 | case DW_FORM_GNU_ref_alt: |
8960 | info_ptr += cu->header.offset_size; | |
8961 | break; | |
ae411497 | 8962 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8963 | info_ptr += cu->header.addr_size; |
8964 | break; | |
8965 | case DW_FORM_data1: | |
8966 | case DW_FORM_ref1: | |
8967 | case DW_FORM_flag: | |
8fe0f950 | 8968 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8969 | info_ptr += 1; |
8970 | break; | |
2dc7f7b3 | 8971 | case DW_FORM_flag_present: |
43988095 | 8972 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8973 | break; |
4bb7a0a7 DJ |
8974 | case DW_FORM_data2: |
8975 | case DW_FORM_ref2: | |
8fe0f950 | 8976 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8977 | info_ptr += 2; |
8978 | break; | |
8fe0f950 AT |
8979 | case DW_FORM_strx3: |
8980 | info_ptr += 3; | |
8981 | break; | |
4bb7a0a7 DJ |
8982 | case DW_FORM_data4: |
8983 | case DW_FORM_ref4: | |
8fe0f950 | 8984 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8985 | info_ptr += 4; |
8986 | break; | |
8987 | case DW_FORM_data8: | |
8988 | case DW_FORM_ref8: | |
55f1336d | 8989 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8990 | info_ptr += 8; |
8991 | break; | |
0224619f JK |
8992 | case DW_FORM_data16: |
8993 | info_ptr += 16; | |
8994 | break; | |
4bb7a0a7 | 8995 | case DW_FORM_string: |
9b1c24c8 | 8996 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8997 | info_ptr += bytes_read; |
8998 | break; | |
2dc7f7b3 | 8999 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9000 | case DW_FORM_strp: |
36586728 | 9001 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9002 | info_ptr += cu->header.offset_size; |
9003 | break; | |
2dc7f7b3 | 9004 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9005 | case DW_FORM_block: |
9006 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9007 | info_ptr += bytes_read; | |
9008 | break; | |
9009 | case DW_FORM_block1: | |
9010 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9011 | break; | |
9012 | case DW_FORM_block2: | |
9013 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9014 | break; | |
9015 | case DW_FORM_block4: | |
9016 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9017 | break; | |
336d760d | 9018 | case DW_FORM_addrx: |
cf532bd1 | 9019 | case DW_FORM_strx: |
4bb7a0a7 DJ |
9020 | case DW_FORM_sdata: |
9021 | case DW_FORM_udata: | |
9022 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9023 | case DW_FORM_GNU_addr_index: |
9024 | case DW_FORM_GNU_str_index: | |
18a8505e | 9025 | case DW_FORM_rnglistx: |
41144253 | 9026 | case DW_FORM_loclistx: |
d521ce57 | 9027 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9028 | break; |
9029 | case DW_FORM_indirect: | |
9030 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9031 | info_ptr += bytes_read; | |
9032 | /* We need to continue parsing from here, so just go back to | |
9033 | the top. */ | |
9034 | goto skip_attribute; | |
9035 | ||
9036 | default: | |
3e43a32a MS |
9037 | error (_("Dwarf Error: Cannot handle %s " |
9038 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9039 | dwarf_form_name (form), |
9040 | bfd_get_filename (abfd)); | |
9041 | } | |
9042 | } | |
9043 | ||
9044 | if (abbrev->has_children) | |
dee91e82 | 9045 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9046 | else |
9047 | return info_ptr; | |
9048 | } | |
9049 | ||
93311388 | 9050 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9051 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9052 | |
d521ce57 | 9053 | static const gdb_byte * |
dee91e82 DE |
9054 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9055 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9056 | const gdb_byte *info_ptr) |
91c24f0a DC |
9057 | { |
9058 | /* Do we know the sibling already? */ | |
72bf9492 | 9059 | |
91c24f0a DC |
9060 | if (orig_pdi->sibling) |
9061 | return orig_pdi->sibling; | |
9062 | ||
9063 | /* Are there any children to deal with? */ | |
9064 | ||
9065 | if (!orig_pdi->has_children) | |
9066 | return info_ptr; | |
9067 | ||
4bb7a0a7 | 9068 | /* Skip the children the long way. */ |
91c24f0a | 9069 | |
dee91e82 | 9070 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9071 | } |
9072 | ||
257e7a09 | 9073 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9074 | not NULL. */ |
c906108c | 9075 | |
891813be TT |
9076 | void |
9077 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 9078 | { |
976ca316 | 9079 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
ed2dc618 | 9080 | |
976ca316 | 9081 | gdb_assert (!per_objfile->symtab_set_p (per_cu_data)); |
af758d11 | 9082 | |
077cbab2 TT |
9083 | /* If this psymtab is constructed from a debug-only objfile, the |
9084 | has_section_at_zero flag will not necessarily be correct. We | |
9085 | can get the correct value for this flag by looking at the data | |
9086 | associated with the (presumably stripped) associated objfile. */ | |
9087 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 9088 | { |
976ca316 | 9089 | dwarf2_per_objfile *per_objfile_backlink |
077cbab2 | 9090 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
c906108c | 9091 | |
976ca316 SM |
9092 | per_objfile->per_bfd->has_section_at_zero |
9093 | = per_objfile_backlink->per_bfd->has_section_at_zero; | |
077cbab2 | 9094 | } |
98bfdba5 | 9095 | |
8566b89b | 9096 | expand_psymtab (objfile); |
95554aad | 9097 | |
976ca316 | 9098 | process_cu_includes (per_objfile); |
c906108c | 9099 | } |
9cdd5dbd DE |
9100 | \f |
9101 | /* Reading in full CUs. */ | |
c906108c | 9102 | |
10b3939b DJ |
9103 | /* Add PER_CU to the queue. */ |
9104 | ||
9105 | static void | |
120ce1b5 SM |
9106 | queue_comp_unit (dwarf2_per_cu_data *per_cu, |
9107 | dwarf2_per_objfile *per_objfile, | |
95554aad | 9108 | enum language pretend_language) |
10b3939b | 9109 | { |
10b3939b | 9110 | per_cu->queued = 1; |
08ac5771 SM |
9111 | |
9112 | gdb_assert (per_objfile->per_bfd->queue.has_value ()); | |
9113 | per_cu->per_bfd->queue->emplace (per_cu, per_objfile, pretend_language); | |
10b3939b DJ |
9114 | } |
9115 | ||
616c069a SM |
9116 | /* If PER_CU is not yet expanded of queued for expansion, add it to the queue. |
9117 | ||
89e63ee4 DE |
9118 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a |
9119 | dependency. | |
69d751e3 | 9120 | |
616c069a SM |
9121 | Return true if maybe_queue_comp_unit requires the caller to load the CU's |
9122 | DIEs, false otherwise. | |
9123 | ||
9124 | Explanation: there is an invariant that if a CU is queued for expansion | |
9125 | (present in `dwarf2_per_bfd::queue`), then its DIEs are loaded | |
9126 | (a dwarf2_cu object exists for this CU, and `dwarf2_per_objfile::get_cu` | |
9127 | returns non-nullptr). If the CU gets enqueued by this function but its DIEs | |
9128 | are not yet loaded, the the caller must load the CU's DIEs to ensure the | |
9129 | invariant is respected. | |
9130 | ||
9131 | The caller is therefore not required to load the CU's DIEs (we return false) | |
9132 | if: | |
9133 | ||
9134 | - the CU is already expanded, and therefore does not get enqueued | |
9135 | - the CU gets enqueued for expansion, but its DIEs are already loaded | |
9136 | ||
9137 | Note that the caller should not use this function's return value as an | |
9138 | indicator of whether the CU's DIEs are loaded right now, it should check | |
9139 | that by calling `dwarf2_per_objfile::get_cu` instead. */ | |
0907af0c DE |
9140 | |
9141 | static int | |
89e63ee4 | 9142 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
120ce1b5 SM |
9143 | dwarf2_per_cu_data *per_cu, |
9144 | dwarf2_per_objfile *per_objfile, | |
0907af0c DE |
9145 | enum language pretend_language) |
9146 | { | |
9147 | /* We may arrive here during partial symbol reading, if we need full | |
9148 | DIEs to process an unusual case (e.g. template arguments). Do | |
9149 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
1859c670 | 9150 | if (per_cu->per_bfd->reading_partial_symbols) |
0907af0c | 9151 | { |
7188ed02 SM |
9152 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9153 | ||
9154 | if (cu == NULL || cu->dies == NULL) | |
0907af0c DE |
9155 | return 1; |
9156 | return 0; | |
9157 | } | |
9158 | ||
9159 | /* Mark the dependence relation so that we don't flush PER_CU | |
9160 | too early. */ | |
89e63ee4 DE |
9161 | if (dependent_cu != NULL) |
9162 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9163 | |
9164 | /* If it's already on the queue, we have nothing to do. */ | |
9165 | if (per_cu->queued) | |
de53369b SM |
9166 | { |
9167 | /* Verify the invariant that if a CU is queued for expansion, its DIEs are | |
9168 | loaded. */ | |
9169 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); | |
616c069a SM |
9170 | |
9171 | /* If the CU is queued for expansion, it should not already be | |
9172 | expanded. */ | |
9173 | gdb_assert (!per_objfile->symtab_set_p (per_cu)); | |
9174 | ||
9175 | /* The DIEs are already loaded, the caller doesn't need to do it. */ | |
de53369b SM |
9176 | return 0; |
9177 | } | |
0907af0c | 9178 | |
616c069a SM |
9179 | bool queued = false; |
9180 | if (!per_objfile->symtab_set_p (per_cu)) | |
9181 | { | |
9182 | /* Add it to the queue. */ | |
9183 | queue_comp_unit (per_cu, per_objfile, pretend_language); | |
9184 | queued = true; | |
9185 | } | |
9186 | ||
0907af0c DE |
9187 | /* If the compilation unit is already loaded, just mark it as |
9188 | used. */ | |
7188ed02 SM |
9189 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
9190 | if (cu != nullptr) | |
616c069a | 9191 | cu->last_used = 0; |
0907af0c | 9192 | |
616c069a SM |
9193 | /* Ask the caller to load the CU's DIEs if the CU got enqueued for expansion |
9194 | and the DIEs are not already loaded. */ | |
9195 | return queued && cu == nullptr; | |
0907af0c DE |
9196 | } |
9197 | ||
10b3939b DJ |
9198 | /* Process the queue. */ |
9199 | ||
9200 | static void | |
976ca316 | 9201 | process_queue (dwarf2_per_objfile *per_objfile) |
10b3939b | 9202 | { |
6f738b01 SM |
9203 | dwarf_read_debug_printf ("Expanding one or more symtabs of objfile %s ...", |
9204 | objfile_name (per_objfile->objfile)); | |
45cfd468 | 9205 | |
03dd20cc DJ |
9206 | /* The queue starts out with one item, but following a DIE reference |
9207 | may load a new CU, adding it to the end of the queue. */ | |
08ac5771 | 9208 | while (!per_objfile->per_bfd->queue->empty ()) |
10b3939b | 9209 | { |
08ac5771 | 9210 | dwarf2_queue_item &item = per_objfile->per_bfd->queue->front (); |
7188ed02 | 9211 | dwarf2_per_cu_data *per_cu = item.per_cu; |
39856def | 9212 | |
976ca316 | 9213 | if (!per_objfile->symtab_set_p (per_cu)) |
f4dc4d17 | 9214 | { |
976ca316 | 9215 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
f4dc4d17 | 9216 | |
7188ed02 SM |
9217 | /* Skip dummy CUs. */ |
9218 | if (cu != nullptr) | |
73be47f5 | 9219 | { |
7188ed02 SM |
9220 | unsigned int debug_print_threshold; |
9221 | char buf[100]; | |
9222 | ||
9223 | if (per_cu->is_debug_types) | |
9224 | { | |
9225 | struct signatured_type *sig_type = | |
9226 | (struct signatured_type *) per_cu; | |
9227 | ||
9228 | sprintf (buf, "TU %s at offset %s", | |
9229 | hex_string (sig_type->signature), | |
9230 | sect_offset_str (per_cu->sect_off)); | |
9231 | /* There can be 100s of TUs. | |
9232 | Only print them in verbose mode. */ | |
9233 | debug_print_threshold = 2; | |
9234 | } | |
9235 | else | |
9236 | { | |
9237 | sprintf (buf, "CU at offset %s", | |
9238 | sect_offset_str (per_cu->sect_off)); | |
9239 | debug_print_threshold = 1; | |
9240 | } | |
247f5c4f | 9241 | |
7188ed02 | 9242 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 9243 | dwarf_read_debug_printf ("Expanding symtab of %s", buf); |
f4dc4d17 | 9244 | |
7188ed02 SM |
9245 | if (per_cu->is_debug_types) |
9246 | process_full_type_unit (cu, item.pretend_language); | |
9247 | else | |
9248 | process_full_comp_unit (cu, item.pretend_language); | |
f4dc4d17 | 9249 | |
7188ed02 | 9250 | if (dwarf_read_debug >= debug_print_threshold) |
6f738b01 | 9251 | dwarf_read_debug_printf ("Done expanding %s", buf); |
7188ed02 | 9252 | } |
f4dc4d17 | 9253 | } |
10b3939b | 9254 | |
7188ed02 | 9255 | per_cu->queued = 0; |
08ac5771 | 9256 | per_objfile->per_bfd->queue->pop (); |
10b3939b DJ |
9257 | } |
9258 | ||
6f738b01 SM |
9259 | dwarf_read_debug_printf ("Done expanding symtabs of %s.", |
9260 | objfile_name (per_objfile->objfile)); | |
10b3939b DJ |
9261 | } |
9262 | ||
10b3939b DJ |
9263 | /* Read in full symbols for PST, and anything it depends on. */ |
9264 | ||
8566b89b TT |
9265 | void |
9266 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9267 | { |
af758d11 | 9268 | gdb_assert (!readin_p (objfile)); |
95554aad | 9269 | |
17ee85fc TT |
9270 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9271 | free_cached_comp_units freer (per_objfile); | |
48993951 | 9272 | expand_dependencies (objfile); |
aaa75496 | 9273 | |
97a1449a | 9274 | dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); |
5717c425 | 9275 | gdb_assert (get_compunit_symtab (objfile) != nullptr); |
10b3939b DJ |
9276 | } |
9277 | ||
af758d11 SM |
9278 | /* See psympriv.h. */ |
9279 | ||
9280 | bool | |
9281 | dwarf2_psymtab::readin_p (struct objfile *objfile) const | |
9282 | { | |
9283 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9284 | return per_objfile->symtab_set_p (per_cu_data); | |
9285 | } | |
9286 | ||
9287 | /* See psympriv.h. */ | |
9288 | ||
9289 | compunit_symtab * | |
9290 | dwarf2_psymtab::get_compunit_symtab (struct objfile *objfile) const | |
9291 | { | |
9292 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9293 | return per_objfile->get_symtab (per_cu_data); | |
9294 | } | |
9295 | ||
dee91e82 DE |
9296 | /* Trivial hash function for die_info: the hash value of a DIE |
9297 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9298 | |
dee91e82 DE |
9299 | static hashval_t |
9300 | die_hash (const void *item) | |
10b3939b | 9301 | { |
9a3c8263 | 9302 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9303 | |
9c541725 | 9304 | return to_underlying (die->sect_off); |
dee91e82 | 9305 | } |
63d06c5c | 9306 | |
dee91e82 DE |
9307 | /* Trivial comparison function for die_info structures: two DIEs |
9308 | are equal if they have the same offset. */ | |
98bfdba5 | 9309 | |
dee91e82 DE |
9310 | static int |
9311 | die_eq (const void *item_lhs, const void *item_rhs) | |
9312 | { | |
9a3c8263 SM |
9313 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9314 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9315 | |
9c541725 | 9316 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9317 | } |
c906108c | 9318 | |
4a636814 SM |
9319 | /* Load the DIEs associated with PER_CU into memory. |
9320 | ||
9321 | In some cases, the caller, while reading partial symbols, will need to load | |
9322 | the full symbols for the CU for some reason. It will already have a | |
9323 | dwarf2_cu object for THIS_CU and pass it as EXISTING_CU, so it can be re-used | |
9324 | rather than creating a new one. */ | |
c906108c | 9325 | |
dee91e82 | 9326 | static void |
ab432490 SM |
9327 | load_full_comp_unit (dwarf2_per_cu_data *this_cu, |
9328 | dwarf2_per_objfile *per_objfile, | |
4a636814 | 9329 | dwarf2_cu *existing_cu, |
c0ab21c2 TT |
9330 | bool skip_partial, |
9331 | enum language pretend_language) | |
dee91e82 | 9332 | { |
c0ab21c2 TT |
9333 | gdb_assert (! this_cu->is_debug_types); |
9334 | ||
7188ed02 | 9335 | cutu_reader reader (this_cu, per_objfile, NULL, existing_cu, skip_partial); |
c0ab21c2 TT |
9336 | if (reader.dummy_p) |
9337 | return; | |
9338 | ||
9339 | struct dwarf2_cu *cu = reader.cu; | |
9340 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9341 | |
dee91e82 DE |
9342 | gdb_assert (cu->die_hash == NULL); |
9343 | cu->die_hash = | |
9344 | htab_create_alloc_ex (cu->header.length / 12, | |
9345 | die_hash, | |
9346 | die_eq, | |
9347 | NULL, | |
9348 | &cu->comp_unit_obstack, | |
9349 | hashtab_obstack_allocate, | |
9350 | dummy_obstack_deallocate); | |
e142c38c | 9351 | |
3e225074 | 9352 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
9353 | reader.comp_unit_die->child |
9354 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9355 | &info_ptr, reader.comp_unit_die); | |
9356 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9357 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9358 | |
9359 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9360 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9361 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9362 | or we won't be able to build types correctly. |
9363 | Similarly, if we do not read the producer, we can not apply | |
9364 | producer-specific interpretation. */ | |
c0ab21c2 | 9365 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
9366 | |
9367 | reader.keep (); | |
10b3939b DJ |
9368 | } |
9369 | ||
3da10d80 KS |
9370 | /* Add a DIE to the delayed physname list. */ |
9371 | ||
9372 | static void | |
9373 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9374 | const char *name, struct die_info *die, | |
9375 | struct dwarf2_cu *cu) | |
9376 | { | |
9377 | struct delayed_method_info mi; | |
9378 | mi.type = type; | |
9379 | mi.fnfield_index = fnfield_index; | |
9380 | mi.index = index; | |
9381 | mi.name = name; | |
9382 | mi.die = die; | |
c89b44cd | 9383 | cu->method_list.push_back (mi); |
3da10d80 KS |
9384 | } |
9385 | ||
3693fdb3 PA |
9386 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9387 | "const" / "volatile". If so, decrements LEN by the length of the | |
9388 | modifier and return true. Otherwise return false. */ | |
9389 | ||
9390 | template<size_t N> | |
9391 | static bool | |
9392 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9393 | { | |
9394 | size_t mod_len = sizeof (mod) - 1; | |
9395 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9396 | { | |
9397 | len -= mod_len; | |
9398 | return true; | |
9399 | } | |
9400 | return false; | |
9401 | } | |
9402 | ||
3da10d80 KS |
9403 | /* Compute the physnames of any methods on the CU's method list. |
9404 | ||
9405 | The computation of method physnames is delayed in order to avoid the | |
9406 | (bad) condition that one of the method's formal parameters is of an as yet | |
9407 | incomplete type. */ | |
9408 | ||
9409 | static void | |
9410 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9411 | { | |
3693fdb3 | 9412 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9413 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9414 | return; |
9415 | gdb_assert (cu->language == language_cplus); | |
9416 | ||
52941706 | 9417 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9418 | { |
1d06ead6 | 9419 | const char *physname; |
3da10d80 | 9420 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9421 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9422 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9423 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9424 | = physname ? physname : ""; |
3693fdb3 PA |
9425 | |
9426 | /* Since there's no tag to indicate whether a method is a | |
9427 | const/volatile overload, extract that information out of the | |
9428 | demangled name. */ | |
9429 | if (physname != NULL) | |
9430 | { | |
9431 | size_t len = strlen (physname); | |
9432 | ||
9433 | while (1) | |
9434 | { | |
9435 | if (physname[len] == ')') /* shortcut */ | |
9436 | break; | |
9437 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9438 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9439 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9440 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9441 | else |
9442 | break; | |
9443 | } | |
9444 | } | |
3da10d80 | 9445 | } |
c89b44cd TT |
9446 | |
9447 | /* The list is no longer needed. */ | |
9448 | cu->method_list.clear (); | |
3da10d80 KS |
9449 | } |
9450 | ||
a766d390 DE |
9451 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9452 | and it's not clear if/how imported objects will appear. | |
9453 | To keep Go support simple until that's worked out, | |
9454 | go back through what we've read and create something usable. | |
9455 | We could do this while processing each DIE, and feels kinda cleaner, | |
9456 | but that way is more invasive. | |
9457 | This is to, for example, allow the user to type "p var" or "b main" | |
9458 | without having to specify the package name, and allow lookups | |
9459 | of module.object to work in contexts that use the expression | |
9460 | parser. */ | |
9461 | ||
9462 | static void | |
9463 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9464 | { | |
421d1616 | 9465 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9466 | struct pending *list; |
9467 | int i; | |
9468 | ||
c24bdb02 | 9469 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9470 | list != NULL; |
9471 | list = list->next) | |
a766d390 DE |
9472 | { |
9473 | for (i = 0; i < list->nsyms; ++i) | |
9474 | { | |
9475 | struct symbol *sym = list->symbol[i]; | |
9476 | ||
c1b5c1eb | 9477 | if (sym->language () == language_go |
a766d390 DE |
9478 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9479 | { | |
421d1616 TT |
9480 | gdb::unique_xmalloc_ptr<char> this_package_name |
9481 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9482 | |
9483 | if (this_package_name == NULL) | |
9484 | continue; | |
9485 | if (package_name == NULL) | |
421d1616 | 9486 | package_name = std::move (this_package_name); |
a766d390 DE |
9487 | else |
9488 | { | |
5e22e966 | 9489 | struct objfile *objfile = cu->per_objfile->objfile; |
421d1616 | 9490 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9491 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9492 | (symbol_symtab (sym) != NULL |
9493 | ? symtab_to_filename_for_display | |
9494 | (symbol_symtab (sym)) | |
e3b94546 | 9495 | : objfile_name (objfile)), |
421d1616 | 9496 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9497 | } |
9498 | } | |
9499 | } | |
9500 | } | |
9501 | ||
9502 | if (package_name != NULL) | |
9503 | { | |
5e22e966 | 9504 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 9505 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9506 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9507 | saved_package_name); | |
a766d390 DE |
9508 | struct symbol *sym; |
9509 | ||
8c14c3a3 | 9510 | sym = new (&objfile->objfile_obstack) symbol; |
d3ecddab | 9511 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9512 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9513 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9514 | e.g., "main" finds the "main" module and not C's main(). */ | |
9515 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9516 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9517 | SYMBOL_TYPE (sym) = type; |
9518 | ||
c24bdb02 | 9519 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9520 | } |
9521 | } | |
9522 | ||
c9317f21 TT |
9523 | /* Allocate a fully-qualified name consisting of the two parts on the |
9524 | obstack. */ | |
9525 | ||
9526 | static const char * | |
9527 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9528 | { | |
9529 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9530 | } | |
9531 | ||
9c6a1327 TT |
9532 | /* A helper that allocates a variant part to attach to a Rust enum |
9533 | type. OBSTACK is where the results should be allocated. TYPE is | |
9534 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
57d02173 TT |
9535 | discriminant. It must be the index of one of the fields of TYPE, |
9536 | or -1 to mean there is no discriminant (univariant enum). | |
9c6a1327 TT |
9537 | DEFAULT_INDEX is the index of the default field; or -1 if there is |
9538 | no default. RANGES is indexed by "effective" field number (the | |
9539 | field index, but omitting the discriminant and default fields) and | |
9540 | must hold the discriminant values used by the variants. Note that | |
9541 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9542 | already allocated on it, or static. */ | |
c9317f21 | 9543 | |
9c6a1327 TT |
9544 | static void |
9545 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9546 | int discriminant_index, int default_index, | |
9547 | gdb::array_view<discriminant_range> ranges) | |
9548 | { | |
57d02173 TT |
9549 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. */ |
9550 | gdb_assert (discriminant_index == -1 | |
9551 | || (discriminant_index >= 0 | |
9552 | && discriminant_index < type->num_fields ())); | |
c9317f21 | 9553 | gdb_assert (default_index == -1 |
1f704f76 | 9554 | || (default_index >= 0 && default_index < type->num_fields ())); |
c9317f21 | 9555 | |
9c6a1327 | 9556 | /* We have one variant for each non-discriminant field. */ |
57d02173 TT |
9557 | int n_variants = type->num_fields (); |
9558 | if (discriminant_index != -1) | |
9559 | --n_variants; | |
c9317f21 | 9560 | |
9c6a1327 TT |
9561 | variant *variants = new (obstack) variant[n_variants]; |
9562 | int var_idx = 0; | |
9563 | int range_idx = 0; | |
1f704f76 | 9564 | for (int i = 0; i < type->num_fields (); ++i) |
9c6a1327 TT |
9565 | { |
9566 | if (i == discriminant_index) | |
9567 | continue; | |
c9317f21 | 9568 | |
9c6a1327 TT |
9569 | variants[var_idx].first_field = i; |
9570 | variants[var_idx].last_field = i + 1; | |
9571 | ||
9572 | /* The default field does not need a range, but other fields do. | |
9573 | We skipped the discriminant above. */ | |
9574 | if (i != default_index) | |
9575 | { | |
9576 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9577 | ++range_idx; | |
9578 | } | |
c9317f21 | 9579 | |
9c6a1327 TT |
9580 | ++var_idx; |
9581 | } | |
9582 | ||
9583 | gdb_assert (range_idx == ranges.size ()); | |
9584 | gdb_assert (var_idx == n_variants); | |
9585 | ||
9586 | variant_part *part = new (obstack) variant_part; | |
9587 | part->discriminant_index = discriminant_index; | |
57d02173 TT |
9588 | /* If there is no discriminant, then whether it is signed is of no |
9589 | consequence. */ | |
9590 | part->is_unsigned | |
9591 | = (discriminant_index == -1 | |
9592 | ? false | |
c6d940a9 | 9593 | : type->field (discriminant_index).type ()->is_unsigned ()); |
9c6a1327 TT |
9594 | part->variants = gdb::array_view<variant> (variants, n_variants); |
9595 | ||
9596 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9597 | gdb::array_view<variant_part> *prop_value | |
9598 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9599 | |
9c6a1327 | 9600 | struct dynamic_prop prop; |
8c2e4e06 | 9601 | prop.set_variant_parts (prop_value); |
9c6a1327 | 9602 | |
5c54719c | 9603 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
c9317f21 TT |
9604 | } |
9605 | ||
9606 | /* Some versions of rustc emitted enums in an unusual way. | |
9607 | ||
9608 | Ordinary enums were emitted as unions. The first element of each | |
9609 | structure in the union was named "RUST$ENUM$DISR". This element | |
9610 | held the discriminant. | |
9611 | ||
9612 | These versions of Rust also implemented the "non-zero" | |
9613 | optimization. When the enum had two values, and one is empty and | |
9614 | the other holds a pointer that cannot be zero, the pointer is used | |
9615 | as the discriminant, with a zero value meaning the empty variant. | |
9616 | Here, the union's first member is of the form | |
9617 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9618 | where the fieldnos are the indices of the fields that should be | |
9619 | traversed in order to find the field (which may be several fields deep) | |
9620 | and the variantname is the name of the variant of the case when the | |
9621 | field is zero. | |
9622 | ||
9623 | This function recognizes whether TYPE is of one of these forms, | |
9624 | and, if so, smashes it to be a variant type. */ | |
9625 | ||
9626 | static void | |
9627 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9628 | { | |
78134374 | 9629 | gdb_assert (type->code () == TYPE_CODE_UNION); |
c9317f21 TT |
9630 | |
9631 | /* We don't need to deal with empty enums. */ | |
1f704f76 | 9632 | if (type->num_fields () == 0) |
c9317f21 TT |
9633 | return; |
9634 | ||
9635 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
1f704f76 | 9636 | if (type->num_fields () == 1 |
c9317f21 TT |
9637 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) |
9638 | { | |
9639 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9640 | ||
9641 | /* Decode the field name to find the offset of the | |
9642 | discriminant. */ | |
9643 | ULONGEST bit_offset = 0; | |
940da03e | 9644 | struct type *field_type = type->field (0).type (); |
c9317f21 TT |
9645 | while (name[0] >= '0' && name[0] <= '9') |
9646 | { | |
9647 | char *tail; | |
9648 | unsigned long index = strtoul (name, &tail, 10); | |
9649 | name = tail; | |
9650 | if (*name != '$' | |
1f704f76 | 9651 | || index >= field_type->num_fields () |
c9317f21 TT |
9652 | || (TYPE_FIELD_LOC_KIND (field_type, index) |
9653 | != FIELD_LOC_KIND_BITPOS)) | |
9654 | { | |
b98664d3 | 9655 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9656 | "[in module %s]"), |
9657 | TYPE_FIELD_NAME (type, 0), | |
9658 | objfile_name (objfile)); | |
9659 | return; | |
9660 | } | |
9661 | ++name; | |
9662 | ||
9663 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
940da03e | 9664 | field_type = field_type->field (index).type (); |
c9317f21 TT |
9665 | } |
9666 | ||
9c6a1327 TT |
9667 | /* Smash this type to be a structure type. We have to do this |
9668 | because the type has already been recorded. */ | |
67607e24 | 9669 | type->set_code (TYPE_CODE_STRUCT); |
5e33d5f4 | 9670 | type->set_num_fields (3); |
9c6a1327 | 9671 | /* Save the field we care about. */ |
ceacbf6e | 9672 | struct field saved_field = type->field (0); |
3cabb6b0 SM |
9673 | type->set_fields |
9674 | ((struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field))); | |
c9317f21 | 9675 | |
9c6a1327 | 9676 | /* Put the discriminant at index 0. */ |
5d14b6e5 | 9677 | type->field (0).set_type (field_type); |
9c6a1327 TT |
9678 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9679 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
ceacbf6e | 9680 | SET_FIELD_BITPOS (type->field (0), bit_offset); |
c9317f21 TT |
9681 | |
9682 | /* The order of fields doesn't really matter, so put the real | |
9683 | field at index 1 and the data-less field at index 2. */ | |
ceacbf6e | 9684 | type->field (1) = saved_field; |
9c6a1327 | 9685 | TYPE_FIELD_NAME (type, 1) |
940da03e SM |
9686 | = rust_last_path_segment (type->field (1).type ()->name ()); |
9687 | type->field (1).type ()->set_name | |
7d93a1e0 | 9688 | (rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
d0e39ea2 | 9689 | TYPE_FIELD_NAME (type, 1))); |
c9317f21 TT |
9690 | |
9691 | const char *dataless_name | |
7d93a1e0 | 9692 | = rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
c9317f21 TT |
9693 | name); |
9694 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9695 | dataless_name); | |
5d14b6e5 | 9696 | type->field (2).set_type (dataless_type); |
c9317f21 TT |
9697 | /* NAME points into the original discriminant name, which |
9698 | already has the correct lifetime. */ | |
9c6a1327 | 9699 | TYPE_FIELD_NAME (type, 2) = name; |
ceacbf6e | 9700 | SET_FIELD_BITPOS (type->field (2), 0); |
c9317f21 | 9701 | |
9c6a1327 TT |
9702 | /* Indicate that this is a variant type. */ |
9703 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9704 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9705 | } |
77c2dba3 TT |
9706 | /* A union with a single anonymous field is probably an old-style |
9707 | univariant enum. */ | |
1f704f76 | 9708 | else if (type->num_fields () == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) |
c9317f21 | 9709 | { |
c9317f21 TT |
9710 | /* Smash this type to be a structure type. We have to do this |
9711 | because the type has already been recorded. */ | |
67607e24 | 9712 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9713 | |
940da03e | 9714 | struct type *field_type = type->field (0).type (); |
c9317f21 | 9715 | const char *variant_name |
7d93a1e0 | 9716 | = rust_last_path_segment (field_type->name ()); |
9c6a1327 | 9717 | TYPE_FIELD_NAME (type, 0) = variant_name; |
d0e39ea2 SM |
9718 | field_type->set_name |
9719 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9720 | type->name (), variant_name)); |
57d02173 TT |
9721 | |
9722 | alloc_rust_variant (&objfile->objfile_obstack, type, -1, 0, {}); | |
c9317f21 TT |
9723 | } |
9724 | else | |
9725 | { | |
9726 | struct type *disr_type = nullptr; | |
1f704f76 | 9727 | for (int i = 0; i < type->num_fields (); ++i) |
c9317f21 | 9728 | { |
940da03e | 9729 | disr_type = type->field (i).type (); |
c9317f21 | 9730 | |
78134374 | 9731 | if (disr_type->code () != TYPE_CODE_STRUCT) |
a037790e TT |
9732 | { |
9733 | /* All fields of a true enum will be structs. */ | |
9734 | return; | |
9735 | } | |
1f704f76 | 9736 | else if (disr_type->num_fields () == 0) |
c9317f21 TT |
9737 | { |
9738 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9739 | disr_type = nullptr; |
c9317f21 TT |
9740 | } |
9741 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9742 | "RUST$ENUM$DISR") != 0) | |
9743 | { | |
9744 | /* Not a Rust enum. */ | |
9745 | return; | |
9746 | } | |
9747 | else | |
9748 | { | |
9749 | /* Found one. */ | |
9750 | break; | |
9751 | } | |
9752 | } | |
9753 | ||
9754 | /* If we got here without a discriminant, then it's probably | |
9755 | just a union. */ | |
9756 | if (disr_type == nullptr) | |
9757 | return; | |
9758 | ||
9759 | /* Smash this type to be a structure type. We have to do this | |
9760 | because the type has already been recorded. */ | |
67607e24 | 9761 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9762 | |
9c6a1327 | 9763 | /* Make space for the discriminant field. */ |
ceacbf6e | 9764 | struct field *disr_field = &disr_type->field (0); |
9c6a1327 | 9765 | field *new_fields |
1f704f76 | 9766 | = (struct field *) TYPE_ZALLOC (type, ((type->num_fields () + 1) |
9c6a1327 | 9767 | * sizeof (struct field))); |
80fc5e77 | 9768 | memcpy (new_fields + 1, type->fields (), |
1f704f76 | 9769 | type->num_fields () * sizeof (struct field)); |
3cabb6b0 | 9770 | type->set_fields (new_fields); |
1f704f76 | 9771 | type->set_num_fields (type->num_fields () + 1); |
c9317f21 TT |
9772 | |
9773 | /* Install the discriminant at index 0 in the union. */ | |
ceacbf6e | 9774 | type->field (0) = *disr_field; |
9c6a1327 TT |
9775 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9776 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9777 | |
9778 | /* We need a way to find the correct discriminant given a | |
9779 | variant name. For convenience we build a map here. */ | |
b6cdac4b | 9780 | struct type *enum_type = disr_field->type (); |
c9317f21 | 9781 | std::unordered_map<std::string, ULONGEST> discriminant_map; |
1f704f76 | 9782 | for (int i = 0; i < enum_type->num_fields (); ++i) |
c9317f21 TT |
9783 | { |
9784 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9785 | { | |
9786 | const char *name | |
9787 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9788 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9789 | } | |
9790 | } | |
9791 | ||
1f704f76 | 9792 | int n_fields = type->num_fields (); |
9c6a1327 TT |
9793 | /* We don't need a range entry for the discriminant, but we do |
9794 | need one for every other field, as there is no default | |
9795 | variant. */ | |
9796 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9797 | discriminant_range, | |
9798 | n_fields - 1); | |
c9317f21 TT |
9799 | /* Skip the discriminant here. */ |
9800 | for (int i = 1; i < n_fields; ++i) | |
9801 | { | |
9802 | /* Find the final word in the name of this variant's type. | |
9803 | That name can be used to look up the correct | |
9804 | discriminant. */ | |
9805 | const char *variant_name | |
940da03e | 9806 | = rust_last_path_segment (type->field (i).type ()->name ()); |
c9317f21 TT |
9807 | |
9808 | auto iter = discriminant_map.find (variant_name); | |
9809 | if (iter != discriminant_map.end ()) | |
9c6a1327 | 9810 | { |
57d02173 TT |
9811 | ranges[i - 1].low = iter->second; |
9812 | ranges[i - 1].high = iter->second; | |
9c6a1327 | 9813 | } |
c9317f21 | 9814 | |
57d02173 TT |
9815 | /* In Rust, each element should have the size of the |
9816 | enclosing enum. */ | |
9817 | TYPE_LENGTH (type->field (i).type ()) = TYPE_LENGTH (type); | |
9818 | ||
bedda9ac | 9819 | /* Remove the discriminant field, if it exists. */ |
940da03e | 9820 | struct type *sub_type = type->field (i).type (); |
1f704f76 | 9821 | if (sub_type->num_fields () > 0) |
bedda9ac | 9822 | { |
5e33d5f4 | 9823 | sub_type->set_num_fields (sub_type->num_fields () - 1); |
3cabb6b0 | 9824 | sub_type->set_fields (sub_type->fields () + 1); |
bedda9ac | 9825 | } |
9c6a1327 | 9826 | TYPE_FIELD_NAME (type, i) = variant_name; |
d0e39ea2 SM |
9827 | sub_type->set_name |
9828 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9829 | type->name (), variant_name)); |
c9317f21 | 9830 | } |
9c6a1327 TT |
9831 | |
9832 | /* Indicate that this is a variant type. */ | |
a1520ad8 | 9833 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, -1, |
9c6a1327 TT |
9834 | gdb::array_view<discriminant_range> (ranges, |
9835 | n_fields - 1)); | |
c9317f21 TT |
9836 | } |
9837 | } | |
9838 | ||
9839 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9840 | ||
9841 | static void | |
9842 | rust_union_quirks (struct dwarf2_cu *cu) | |
9843 | { | |
9844 | gdb_assert (cu->language == language_rust); | |
52941706 | 9845 | for (type *type_ : cu->rust_unions) |
5e22e966 | 9846 | quirk_rust_enum (type_, cu->per_objfile->objfile); |
2d79090e TT |
9847 | /* We don't need this any more. */ |
9848 | cu->rust_unions.clear (); | |
c9317f21 TT |
9849 | } |
9850 | ||
8adb8487 TT |
9851 | /* See read.h. */ |
9852 | ||
9853 | type_unit_group_unshareable * | |
9854 | dwarf2_per_objfile::get_type_unit_group_unshareable (type_unit_group *tu_group) | |
9855 | { | |
9856 | auto iter = this->m_type_units.find (tu_group); | |
9857 | if (iter != this->m_type_units.end ()) | |
9858 | return iter->second.get (); | |
9859 | ||
9860 | type_unit_group_unshareable_up uniq (new type_unit_group_unshareable); | |
9861 | type_unit_group_unshareable *result = uniq.get (); | |
9862 | this->m_type_units[tu_group] = std::move (uniq); | |
9863 | return result; | |
9864 | } | |
9865 | ||
e286671b TT |
9866 | struct type * |
9867 | dwarf2_per_objfile::get_type_for_signatured_type | |
9868 | (signatured_type *sig_type) const | |
9869 | { | |
9870 | auto iter = this->m_type_map.find (sig_type); | |
9871 | if (iter == this->m_type_map.end ()) | |
9872 | return nullptr; | |
9873 | ||
9874 | return iter->second; | |
9875 | } | |
9876 | ||
9877 | void dwarf2_per_objfile::set_type_for_signatured_type | |
9878 | (signatured_type *sig_type, struct type *type) | |
9879 | { | |
9880 | gdb_assert (this->m_type_map.find (sig_type) == this->m_type_map.end ()); | |
9881 | ||
9882 | this->m_type_map[sig_type] = type; | |
9883 | } | |
9884 | ||
95554aad TT |
9885 | /* A helper function for computing the list of all symbol tables |
9886 | included by PER_CU. */ | |
9887 | ||
9888 | static void | |
4c39bc03 | 9889 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9890 | htab_t all_children, htab_t all_type_symtabs, |
43182c09 SM |
9891 | dwarf2_per_cu_data *per_cu, |
9892 | dwarf2_per_objfile *per_objfile, | |
43f3e411 | 9893 | struct compunit_symtab *immediate_parent) |
95554aad | 9894 | { |
af758d11 | 9895 | void **slot = htab_find_slot (all_children, per_cu, INSERT); |
95554aad TT |
9896 | if (*slot != NULL) |
9897 | { | |
9898 | /* This inclusion and its children have been processed. */ | |
9899 | return; | |
9900 | } | |
9901 | ||
9902 | *slot = per_cu; | |
af758d11 | 9903 | |
95554aad | 9904 | /* Only add a CU if it has a symbol table. */ |
43182c09 | 9905 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
43f3e411 | 9906 | if (cust != NULL) |
ec94af83 DE |
9907 | { |
9908 | /* If this is a type unit only add its symbol table if we haven't | |
9909 | seen it yet (type unit per_cu's can share symtabs). */ | |
9910 | if (per_cu->is_debug_types) | |
9911 | { | |
43f3e411 | 9912 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9913 | if (*slot == NULL) |
9914 | { | |
43f3e411 | 9915 | *slot = cust; |
4c39bc03 | 9916 | result->push_back (cust); |
43f3e411 DE |
9917 | if (cust->user == NULL) |
9918 | cust->user = immediate_parent; | |
ec94af83 DE |
9919 | } |
9920 | } | |
9921 | else | |
f9125b6c | 9922 | { |
4c39bc03 | 9923 | result->push_back (cust); |
43f3e411 DE |
9924 | if (cust->user == NULL) |
9925 | cust->user = immediate_parent; | |
f9125b6c | 9926 | } |
ec94af83 | 9927 | } |
95554aad | 9928 | |
ae640021 AB |
9929 | if (!per_cu->imported_symtabs_empty ()) |
9930 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9931 | { | |
9932 | recursively_compute_inclusions (result, all_children, | |
43182c09 SM |
9933 | all_type_symtabs, ptr, per_objfile, |
9934 | cust); | |
ae640021 | 9935 | } |
95554aad TT |
9936 | } |
9937 | ||
43f3e411 | 9938 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9939 | PER_CU. */ |
9940 | ||
9941 | static void | |
43182c09 SM |
9942 | compute_compunit_symtab_includes (dwarf2_per_cu_data *per_cu, |
9943 | dwarf2_per_objfile *per_objfile) | |
95554aad | 9944 | { |
f4dc4d17 DE |
9945 | gdb_assert (! per_cu->is_debug_types); |
9946 | ||
ae640021 | 9947 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9948 | { |
ae640021 | 9949 | int len; |
4c39bc03 | 9950 | std::vector<compunit_symtab *> result_symtabs; |
43182c09 | 9951 | compunit_symtab *cust = per_objfile->get_symtab (per_cu); |
95554aad TT |
9952 | |
9953 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9954 | if (cust == NULL) |
95554aad TT |
9955 | return; |
9956 | ||
280a9412 TT |
9957 | htab_up all_children (htab_create_alloc (1, htab_hash_pointer, |
9958 | htab_eq_pointer, | |
9959 | NULL, xcalloc, xfree)); | |
9960 | htab_up all_type_symtabs (htab_create_alloc (1, htab_hash_pointer, | |
9961 | htab_eq_pointer, | |
9962 | NULL, xcalloc, xfree)); | |
95554aad | 9963 | |
ae640021 | 9964 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 | 9965 | { |
280a9412 TT |
9966 | recursively_compute_inclusions (&result_symtabs, all_children.get (), |
9967 | all_type_symtabs.get (), ptr, | |
9968 | per_objfile, cust); | |
ec94af83 | 9969 | } |
95554aad | 9970 | |
ec94af83 | 9971 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9972 | len = result_symtabs.size (); |
43f3e411 | 9973 | cust->includes |
f6e649dd | 9974 | = XOBNEWVEC (&per_objfile->objfile->objfile_obstack, |
8d749320 | 9975 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9976 | memcpy (cust->includes, result_symtabs.data (), |
9977 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9978 | cust->includes[len] = NULL; |
95554aad TT |
9979 | } |
9980 | } | |
9981 | ||
9982 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9983 | read. */ | |
9984 | ||
9985 | static void | |
976ca316 | 9986 | process_cu_includes (dwarf2_per_objfile *per_objfile) |
95554aad | 9987 | { |
976ca316 | 9988 | for (dwarf2_per_cu_data *iter : per_objfile->per_bfd->just_read_cus) |
f4dc4d17 DE |
9989 | { |
9990 | if (! iter->is_debug_types) | |
976ca316 | 9991 | compute_compunit_symtab_includes (iter, per_objfile); |
f4dc4d17 | 9992 | } |
95554aad | 9993 | |
976ca316 | 9994 | per_objfile->per_bfd->just_read_cus.clear (); |
95554aad TT |
9995 | } |
9996 | ||
8fc0b21d | 9997 | /* Generate full symbol information for CU, whose DIEs have |
10b3939b DJ |
9998 | already been loaded into memory. */ |
9999 | ||
10000 | static void | |
8fc0b21d | 10001 | process_full_comp_unit (dwarf2_cu *cu, enum language pretend_language) |
10b3939b | 10002 | { |
976ca316 SM |
10003 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10004 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 10005 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 10006 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10007 | struct compunit_symtab *cust; |
10b3939b | 10008 | CORE_ADDR baseaddr; |
4359dff1 | 10009 | struct block *static_block; |
3e29f34a | 10010 | CORE_ADDR addr; |
10b3939b | 10011 | |
b3b3bada | 10012 | baseaddr = objfile->text_section_offset (); |
10b3939b | 10013 | |
c89b44cd TT |
10014 | /* Clear the list here in case something was left over. */ |
10015 | cu->method_list.clear (); | |
10b3939b | 10016 | |
95554aad TT |
10017 | cu->language = pretend_language; |
10018 | cu->language_defn = language_def (cu->language); | |
10019 | ||
1c47ec3e TV |
10020 | dwarf2_find_base_address (cu->dies, cu); |
10021 | ||
702cf3f5 AB |
10022 | /* Before we start reading the top-level DIE, ensure it has a valid tag |
10023 | type. */ | |
10024 | switch (cu->dies->tag) | |
10025 | { | |
10026 | case DW_TAG_compile_unit: | |
10027 | case DW_TAG_partial_unit: | |
10028 | case DW_TAG_type_unit: | |
10029 | break; | |
10030 | default: | |
10031 | error (_("Dwarf Error: unexpected tag '%s' at offset %s [in module %s]"), | |
10032 | dwarf_tag_name (cu->dies->tag), | |
10033 | sect_offset_str (cu->per_cu->sect_off), | |
10034 | objfile_name (per_objfile->objfile)); | |
10035 | } | |
10036 | ||
c906108c | 10037 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10038 | process_die (cu->dies, cu); |
c906108c | 10039 | |
a766d390 DE |
10040 | /* For now fudge the Go package. */ |
10041 | if (cu->language == language_go) | |
10042 | fixup_go_packaging (cu); | |
10043 | ||
5f48f8f3 | 10044 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
10045 | should be complete, and it should now be safe to compute all of the |
10046 | physnames. */ | |
10047 | compute_delayed_physnames (cu); | |
3da10d80 | 10048 | |
c9317f21 TT |
10049 | if (cu->language == language_rust) |
10050 | rust_union_quirks (cu); | |
10051 | ||
fae299cd DC |
10052 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10053 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10054 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10055 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10056 | |
3e29f34a | 10057 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 10058 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
10059 | |
10060 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10061 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10062 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10063 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10064 | this comp unit. */ | |
10065 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10066 | ||
c24bdb02 | 10067 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
10068 | SECT_OFF_TEXT (objfile), |
10069 | 0); | |
c906108c | 10070 | |
43f3e411 | 10071 | if (cust != NULL) |
c906108c | 10072 | { |
df15bd07 | 10073 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10074 | |
8be455d7 JK |
10075 | /* Set symtab language to language from DW_AT_language. If the |
10076 | compilation is from a C file generated by language preprocessors, do | |
10077 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10078 | if (!(cu->language == language_c |
40e3ad0e | 10079 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10080 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10081 | |
10082 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10083 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10084 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10085 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10086 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10087 | |
10088 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10089 | needed, it would be wrong due to missing DW_AT_producer there. | |
10090 | ||
10091 | Still one can confuse GDB by using non-standard GCC compilation | |
10092 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 10093 | */ |
ab260dad | 10094 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10095 | cust->locations_valid = 1; |
e0d00bc7 JK |
10096 | |
10097 | if (gcc_4_minor >= 5) | |
43f3e411 | 10098 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10099 | |
43f3e411 | 10100 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10101 | } |
9291a0cd | 10102 | |
976ca316 | 10103 | per_objfile->set_symtab (cu->per_cu, cust); |
c906108c | 10104 | |
95554aad | 10105 | /* Push it for inclusion processing later. */ |
976ca316 | 10106 | per_objfile->per_bfd->just_read_cus.push_back (cu->per_cu); |
804d2729 TT |
10107 | |
10108 | /* Not needed any more. */ | |
c24bdb02 | 10109 | cu->reset_builder (); |
f4dc4d17 | 10110 | } |
45cfd468 | 10111 | |
8fc0b21d | 10112 | /* Generate full symbol information for type unit CU, whose DIEs have |
f4dc4d17 DE |
10113 | already been loaded into memory. */ |
10114 | ||
10115 | static void | |
8fc0b21d | 10116 | process_full_type_unit (dwarf2_cu *cu, |
f4dc4d17 DE |
10117 | enum language pretend_language) |
10118 | { | |
976ca316 SM |
10119 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10120 | struct objfile *objfile = per_objfile->objfile; | |
43f3e411 | 10121 | struct compunit_symtab *cust; |
0186c6a7 DE |
10122 | struct signatured_type *sig_type; |
10123 | ||
8fc0b21d SM |
10124 | gdb_assert (cu->per_cu->is_debug_types); |
10125 | sig_type = (struct signatured_type *) cu->per_cu; | |
f4dc4d17 | 10126 | |
c89b44cd TT |
10127 | /* Clear the list here in case something was left over. */ |
10128 | cu->method_list.clear (); | |
f4dc4d17 | 10129 | |
f4dc4d17 DE |
10130 | cu->language = pretend_language; |
10131 | cu->language_defn = language_def (cu->language); | |
10132 | ||
10133 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10134 | process_die (cu->dies, cu); | |
10135 | ||
10136 | /* For now fudge the Go package. */ | |
10137 | if (cu->language == language_go) | |
10138 | fixup_go_packaging (cu); | |
10139 | ||
5f48f8f3 | 10140 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
10141 | should be complete, and it should now be safe to compute all of the |
10142 | physnames. */ | |
10143 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10144 | |
c9317f21 TT |
10145 | if (cu->language == language_rust) |
10146 | rust_union_quirks (cu); | |
10147 | ||
f4dc4d17 DE |
10148 | /* TUs share symbol tables. |
10149 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10150 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10151 | this TU's symbols to the existing symtab. */ | |
8adb8487 | 10152 | type_unit_group_unshareable *tug_unshare = |
976ca316 | 10153 | per_objfile->get_type_unit_group_unshareable (sig_type->type_unit_group); |
8adb8487 | 10154 | if (tug_unshare->compunit_symtab == NULL) |
45cfd468 | 10155 | { |
c24bdb02 KS |
10156 | buildsym_compunit *builder = cu->get_builder (); |
10157 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
8adb8487 | 10158 | tug_unshare->compunit_symtab = cust; |
f4dc4d17 | 10159 | |
43f3e411 | 10160 | if (cust != NULL) |
f4dc4d17 DE |
10161 | { |
10162 | /* Set symtab language to language from DW_AT_language. If the | |
10163 | compilation is from a C file generated by language preprocessors, | |
10164 | do not set the language if it was already deduced by | |
10165 | start_subfile. */ | |
43f3e411 DE |
10166 | if (!(cu->language == language_c |
10167 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10168 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10169 | } |
10170 | } | |
10171 | else | |
10172 | { | |
c24bdb02 | 10173 | cu->get_builder ()->augment_type_symtab (); |
8adb8487 | 10174 | cust = tug_unshare->compunit_symtab; |
f4dc4d17 DE |
10175 | } |
10176 | ||
976ca316 | 10177 | per_objfile->set_symtab (cu->per_cu, cust); |
804d2729 TT |
10178 | |
10179 | /* Not needed any more. */ | |
c24bdb02 | 10180 | cu->reset_builder (); |
c906108c SS |
10181 | } |
10182 | ||
95554aad TT |
10183 | /* Process an imported unit DIE. */ |
10184 | ||
10185 | static void | |
10186 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10187 | { | |
10188 | struct attribute *attr; | |
10189 | ||
f4dc4d17 DE |
10190 | /* For now we don't handle imported units in type units. */ |
10191 | if (cu->per_cu->is_debug_types) | |
10192 | { | |
10193 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10194 | " supported in type units [in module %s]"), | |
5e22e966 | 10195 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
10196 | } |
10197 | ||
95554aad TT |
10198 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10199 | if (attr != NULL) | |
10200 | { | |
0826b30a | 10201 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 | 10202 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
ab432490 | 10203 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
9c541725 | 10204 | dwarf2_per_cu_data *per_cu |
ab432490 | 10205 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, per_objfile); |
95554aad | 10206 | |
58990295 TV |
10207 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
10208 | into another compilation unit, at root level. Regard this as a hint, | |
10209 | and ignore it. */ | |
10210 | if (die->parent && die->parent->parent == NULL | |
10211 | && per_cu->unit_type == DW_UT_compile | |
10212 | && per_cu->lang == language_cplus) | |
10213 | return; | |
10214 | ||
69d751e3 | 10215 | /* If necessary, add it to the queue and load its DIEs. */ |
120ce1b5 | 10216 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language)) |
4a636814 SM |
10217 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
10218 | false, cu->language); | |
95554aad | 10219 | |
ae640021 | 10220 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
10221 | } |
10222 | } | |
10223 | ||
4c8aa72d PA |
10224 | /* RAII object that represents a process_die scope: i.e., |
10225 | starts/finishes processing a DIE. */ | |
10226 | class process_die_scope | |
adde2bff | 10227 | { |
4c8aa72d PA |
10228 | public: |
10229 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10230 | : m_die (die), m_cu (cu) | |
10231 | { | |
10232 | /* We should only be processing DIEs not already in process. */ | |
10233 | gdb_assert (!m_die->in_process); | |
10234 | m_die->in_process = true; | |
10235 | } | |
8c3cb9fa | 10236 | |
4c8aa72d PA |
10237 | ~process_die_scope () |
10238 | { | |
10239 | m_die->in_process = false; | |
10240 | ||
10241 | /* If we're done processing the DIE for the CU that owns the line | |
10242 | header, we don't need the line header anymore. */ | |
10243 | if (m_cu->line_header_die_owner == m_die) | |
10244 | { | |
10245 | delete m_cu->line_header; | |
10246 | m_cu->line_header = NULL; | |
10247 | m_cu->line_header_die_owner = NULL; | |
10248 | } | |
10249 | } | |
10250 | ||
10251 | private: | |
10252 | die_info *m_die; | |
10253 | dwarf2_cu *m_cu; | |
10254 | }; | |
adde2bff | 10255 | |
c906108c SS |
10256 | /* Process a die and its children. */ |
10257 | ||
10258 | static void | |
e7c27a73 | 10259 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10260 | { |
4c8aa72d | 10261 | process_die_scope scope (die, cu); |
adde2bff | 10262 | |
c906108c SS |
10263 | switch (die->tag) |
10264 | { | |
10265 | case DW_TAG_padding: | |
10266 | break; | |
10267 | case DW_TAG_compile_unit: | |
95554aad | 10268 | case DW_TAG_partial_unit: |
e7c27a73 | 10269 | read_file_scope (die, cu); |
c906108c | 10270 | break; |
348e048f DE |
10271 | case DW_TAG_type_unit: |
10272 | read_type_unit_scope (die, cu); | |
10273 | break; | |
c906108c | 10274 | case DW_TAG_subprogram: |
0a4b0913 AB |
10275 | /* Nested subprograms in Fortran get a prefix. */ |
10276 | if (cu->language == language_fortran | |
10277 | && die->parent != NULL | |
10278 | && die->parent->tag == DW_TAG_subprogram) | |
10279 | cu->processing_has_namespace_info = true; | |
10280 | /* Fall through. */ | |
c906108c | 10281 | case DW_TAG_inlined_subroutine: |
edb3359d | 10282 | read_func_scope (die, cu); |
c906108c SS |
10283 | break; |
10284 | case DW_TAG_lexical_block: | |
14898363 L |
10285 | case DW_TAG_try_block: |
10286 | case DW_TAG_catch_block: | |
e7c27a73 | 10287 | read_lexical_block_scope (die, cu); |
c906108c | 10288 | break; |
216f72a1 | 10289 | case DW_TAG_call_site: |
96408a79 SA |
10290 | case DW_TAG_GNU_call_site: |
10291 | read_call_site_scope (die, cu); | |
10292 | break; | |
c906108c | 10293 | case DW_TAG_class_type: |
680b30c7 | 10294 | case DW_TAG_interface_type: |
c906108c SS |
10295 | case DW_TAG_structure_type: |
10296 | case DW_TAG_union_type: | |
134d01f1 | 10297 | process_structure_scope (die, cu); |
c906108c SS |
10298 | break; |
10299 | case DW_TAG_enumeration_type: | |
134d01f1 | 10300 | process_enumeration_scope (die, cu); |
c906108c | 10301 | break; |
134d01f1 | 10302 | |
f792889a DJ |
10303 | /* These dies have a type, but processing them does not create |
10304 | a symbol or recurse to process the children. Therefore we can | |
10305 | read them on-demand through read_type_die. */ | |
c906108c | 10306 | case DW_TAG_subroutine_type: |
72019c9c | 10307 | case DW_TAG_set_type: |
c906108c | 10308 | case DW_TAG_pointer_type: |
c906108c | 10309 | case DW_TAG_ptr_to_member_type: |
c906108c | 10310 | case DW_TAG_reference_type: |
4297a3f0 | 10311 | case DW_TAG_rvalue_reference_type: |
c906108c | 10312 | case DW_TAG_string_type: |
c906108c | 10313 | break; |
134d01f1 | 10314 | |
d8f62e84 TT |
10315 | case DW_TAG_array_type: |
10316 | /* We only need to handle this case for Ada -- in other | |
10317 | languages, it's normal for the compiler to emit a typedef | |
10318 | instead. */ | |
10319 | if (cu->language != language_ada) | |
10320 | break; | |
10321 | /* FALLTHROUGH */ | |
c906108c | 10322 | case DW_TAG_base_type: |
a02abb62 | 10323 | case DW_TAG_subrange_type: |
cb249c71 | 10324 | case DW_TAG_typedef: |
134d01f1 | 10325 | /* Add a typedef symbol for the type definition, if it has a |
dda83cd7 | 10326 | DW_AT_name. */ |
f792889a | 10327 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10328 | break; |
c906108c | 10329 | case DW_TAG_common_block: |
e7c27a73 | 10330 | read_common_block (die, cu); |
c906108c SS |
10331 | break; |
10332 | case DW_TAG_common_inclusion: | |
10333 | break; | |
d9fa45fe | 10334 | case DW_TAG_namespace: |
9068261f | 10335 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10336 | read_namespace (die, cu); |
d9fa45fe | 10337 | break; |
5d7cb8df | 10338 | case DW_TAG_module: |
9068261f | 10339 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10340 | read_module (die, cu); |
10341 | break; | |
d9fa45fe | 10342 | case DW_TAG_imported_declaration: |
9068261f | 10343 | cu->processing_has_namespace_info = true; |
74921315 KS |
10344 | if (read_namespace_alias (die, cu)) |
10345 | break; | |
86a73007 TT |
10346 | /* The declaration is not a global namespace alias. */ |
10347 | /* Fall through. */ | |
d9fa45fe | 10348 | case DW_TAG_imported_module: |
9068261f | 10349 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10350 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10351 | || cu->language != language_fortran)) | |
b98664d3 | 10352 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10353 | dwarf_tag_name (die->tag)); |
10354 | read_import_statement (die, cu); | |
d9fa45fe | 10355 | break; |
95554aad TT |
10356 | |
10357 | case DW_TAG_imported_unit: | |
10358 | process_imported_unit_die (die, cu); | |
10359 | break; | |
10360 | ||
71a3c369 TT |
10361 | case DW_TAG_variable: |
10362 | read_variable (die, cu); | |
10363 | break; | |
10364 | ||
c906108c | 10365 | default: |
e7c27a73 | 10366 | new_symbol (die, NULL, cu); |
c906108c SS |
10367 | break; |
10368 | } | |
10369 | } | |
ca69b9e6 DE |
10370 | \f |
10371 | /* DWARF name computation. */ | |
c906108c | 10372 | |
94af9270 KS |
10373 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10374 | needs to have the name of the scope prepended to the name listed in the | |
10375 | die. */ | |
10376 | ||
10377 | static int | |
10378 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10379 | { | |
1c809c68 TT |
10380 | struct attribute *attr; |
10381 | ||
94af9270 KS |
10382 | switch (die->tag) |
10383 | { | |
10384 | case DW_TAG_namespace: | |
10385 | case DW_TAG_typedef: | |
10386 | case DW_TAG_class_type: | |
10387 | case DW_TAG_interface_type: | |
10388 | case DW_TAG_structure_type: | |
10389 | case DW_TAG_union_type: | |
10390 | case DW_TAG_enumeration_type: | |
10391 | case DW_TAG_enumerator: | |
10392 | case DW_TAG_subprogram: | |
08a76f8a | 10393 | case DW_TAG_inlined_subroutine: |
94af9270 | 10394 | case DW_TAG_member: |
74921315 | 10395 | case DW_TAG_imported_declaration: |
94af9270 KS |
10396 | return 1; |
10397 | ||
10398 | case DW_TAG_variable: | |
c2b0a229 | 10399 | case DW_TAG_constant: |
94af9270 KS |
10400 | /* We only need to prefix "globally" visible variables. These include |
10401 | any variable marked with DW_AT_external or any variable that | |
10402 | lives in a namespace. [Variables in anonymous namespaces | |
10403 | require prefixing, but they are not DW_AT_external.] */ | |
10404 | ||
10405 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10406 | { | |
10407 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10408 | |
94af9270 KS |
10409 | return die_needs_namespace (die_specification (die, &spec_cu), |
10410 | spec_cu); | |
10411 | } | |
10412 | ||
1c809c68 | 10413 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10414 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10415 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10416 | return 0; |
10417 | /* A variable in a lexical block of some kind does not need a | |
10418 | namespace, even though in C++ such variables may be external | |
10419 | and have a mangled name. */ | |
10420 | if (die->parent->tag == DW_TAG_lexical_block | |
10421 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10422 | || die->parent->tag == DW_TAG_catch_block |
10423 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10424 | return 0; |
10425 | return 1; | |
94af9270 KS |
10426 | |
10427 | default: | |
10428 | return 0; | |
10429 | } | |
10430 | } | |
10431 | ||
73b9be8b KS |
10432 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10433 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10434 | defined for the given DIE. */ | |
10435 | ||
10436 | static struct attribute * | |
10437 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10438 | { | |
10439 | struct attribute *attr; | |
10440 | ||
10441 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10442 | if (attr == NULL) | |
10443 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10444 | ||
10445 | return attr; | |
10446 | } | |
10447 | ||
10448 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10449 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10450 | defined for the given DIE. */ | |
10451 | ||
10452 | static const char * | |
10453 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10454 | { | |
10455 | const char *linkage_name; | |
10456 | ||
10457 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10458 | if (linkage_name == NULL) | |
10459 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10460 | ||
787de330 TT |
10461 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10462 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10463 | if (cu->language == language_rust && linkage_name != NULL | |
10464 | && strchr (linkage_name, '{') != NULL) | |
10465 | linkage_name = NULL; | |
10466 | ||
73b9be8b KS |
10467 | return linkage_name; |
10468 | } | |
10469 | ||
94af9270 | 10470 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10471 | compute the physname for the object, which include a method's: |
9c37b5ae | 10472 | - formal parameters (C++), |
a766d390 | 10473 | - receiver type (Go), |
a766d390 DE |
10474 | |
10475 | The term "physname" is a bit confusing. | |
10476 | For C++, for example, it is the demangled name. | |
10477 | For Go, for example, it's the mangled name. | |
94af9270 | 10478 | |
af6b7be1 JB |
10479 | For Ada, return the DIE's linkage name rather than the fully qualified |
10480 | name. PHYSNAME is ignored.. | |
10481 | ||
5989a64e | 10482 | The result is allocated on the objfile->per_bfd's obstack and |
45940949 | 10483 | canonicalized. */ |
94af9270 KS |
10484 | |
10485 | static const char * | |
15d034d0 TT |
10486 | dwarf2_compute_name (const char *name, |
10487 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10488 | int physname) |
10489 | { | |
5e22e966 | 10490 | struct objfile *objfile = cu->per_objfile->objfile; |
bb5ed363 | 10491 | |
94af9270 KS |
10492 | if (name == NULL) |
10493 | name = dwarf2_name (die, cu); | |
10494 | ||
2ee7123e DE |
10495 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10496 | but otherwise compute it by typename_concat inside GDB. | |
10497 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10498 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10499 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10500 | will set the demangled name to the result of dwarf2_full_name, and it is |
10501 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10502 | if (cu->language == language_ada |
10503 | || (cu->language == language_fortran && physname)) | |
10504 | { | |
10505 | /* For Ada unit, we prefer the linkage name over the name, as | |
10506 | the former contains the exported name, which the user expects | |
10507 | to be able to reference. Ideally, we want the user to be able | |
10508 | to reference this entity using either natural or linkage name, | |
10509 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10510 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10511 | |
2ee7123e DE |
10512 | if (linkage_name != NULL) |
10513 | return linkage_name; | |
f55ee35c JK |
10514 | } |
10515 | ||
94af9270 KS |
10516 | /* These are the only languages we know how to qualify names in. */ |
10517 | if (name != NULL | |
9c37b5ae | 10518 | && (cu->language == language_cplus |
c44af4eb TT |
10519 | || cu->language == language_fortran || cu->language == language_d |
10520 | || cu->language == language_rust)) | |
94af9270 KS |
10521 | { |
10522 | if (die_needs_namespace (die, cu)) | |
10523 | { | |
0d5cff50 | 10524 | const char *prefix; |
34a68019 | 10525 | const char *canonical_name = NULL; |
94af9270 | 10526 | |
d7e74731 PA |
10527 | string_file buf; |
10528 | ||
94af9270 | 10529 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10530 | if (*prefix != '\0') |
10531 | { | |
43816ebc TT |
10532 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10533 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10534 | |
43816ebc | 10535 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10536 | } |
10537 | else | |
d7e74731 | 10538 | buf.puts (name); |
94af9270 | 10539 | |
98bfdba5 PA |
10540 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10541 | as children with DW_TAG_template_type_param or | |
10542 | DW_TAG_value_type_param. If the latter, add them to the name | |
10543 | here. If the name already has template parameters, then | |
10544 | skip this step; some versions of GCC emit both, and | |
10545 | it is more efficient to use the pre-computed name. | |
10546 | ||
10547 | Something to keep in mind about this process: it is very | |
10548 | unlikely, or in some cases downright impossible, to produce | |
10549 | something that will match the mangled name of a function. | |
10550 | If the definition of the function has the same debug info, | |
10551 | we should be able to match up with it anyway. But fallbacks | |
10552 | using the minimal symbol, for instance to find a method | |
10553 | implemented in a stripped copy of libstdc++, will not work. | |
10554 | If we do not have debug info for the definition, we will have to | |
10555 | match them up some other way. | |
10556 | ||
10557 | When we do name matching there is a related problem with function | |
10558 | templates; two instantiated function templates are allowed to | |
10559 | differ only by their return types, which we do not add here. */ | |
10560 | ||
10561 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10562 | { | |
10563 | struct attribute *attr; | |
10564 | struct die_info *child; | |
10565 | int first = 1; | |
2c75ccb2 | 10566 | const language_defn *cplus_lang = language_def (cu->language); |
98bfdba5 PA |
10567 | |
10568 | die->building_fullname = 1; | |
10569 | ||
10570 | for (child = die->child; child != NULL; child = child->sibling) | |
10571 | { | |
10572 | struct type *type; | |
12df843f | 10573 | LONGEST value; |
d521ce57 | 10574 | const gdb_byte *bytes; |
98bfdba5 PA |
10575 | struct dwarf2_locexpr_baton *baton; |
10576 | struct value *v; | |
10577 | ||
10578 | if (child->tag != DW_TAG_template_type_param | |
10579 | && child->tag != DW_TAG_template_value_param) | |
10580 | continue; | |
10581 | ||
10582 | if (first) | |
10583 | { | |
d7e74731 | 10584 | buf.puts ("<"); |
98bfdba5 PA |
10585 | first = 0; |
10586 | } | |
10587 | else | |
d7e74731 | 10588 | buf.puts (", "); |
98bfdba5 PA |
10589 | |
10590 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10591 | if (attr == NULL) | |
10592 | { | |
b98664d3 | 10593 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10594 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10595 | continue; |
10596 | } | |
10597 | type = die_type (child, cu); | |
10598 | ||
10599 | if (child->tag == DW_TAG_template_type_param) | |
10600 | { | |
2c75ccb2 AB |
10601 | cplus_lang->print_type (type, "", &buf, -1, 0, |
10602 | &type_print_raw_options); | |
98bfdba5 PA |
10603 | continue; |
10604 | } | |
10605 | ||
10606 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10607 | if (attr == NULL) | |
10608 | { | |
b98664d3 | 10609 | complaint (_("template parameter missing " |
3e43a32a | 10610 | "DW_AT_const_value")); |
d7e74731 | 10611 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10612 | continue; |
10613 | } | |
10614 | ||
10615 | dwarf2_const_value_attr (attr, type, name, | |
10616 | &cu->comp_unit_obstack, cu, | |
10617 | &value, &bytes, &baton); | |
10618 | ||
20ce4123 | 10619 | if (type->has_no_signedness ()) |
98bfdba5 PA |
10620 | /* GDB prints characters as NUMBER 'CHAR'. If that's |
10621 | changed, this can use value_print instead. */ | |
2c75ccb2 | 10622 | cplus_lang->printchar (value, type, &buf); |
98bfdba5 PA |
10623 | else |
10624 | { | |
10625 | struct value_print_options opts; | |
10626 | ||
10627 | if (baton != NULL) | |
10628 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10629 | baton->data, | |
10630 | baton->size, | |
9f47c707 SM |
10631 | baton->per_cu, |
10632 | baton->per_objfile); | |
98bfdba5 PA |
10633 | else if (bytes != NULL) |
10634 | { | |
10635 | v = allocate_value (type); | |
10636 | memcpy (value_contents_writeable (v), bytes, | |
10637 | TYPE_LENGTH (type)); | |
10638 | } | |
10639 | else | |
10640 | v = value_from_longest (type, value); | |
10641 | ||
3e43a32a MS |
10642 | /* Specify decimal so that we do not depend on |
10643 | the radix. */ | |
98bfdba5 PA |
10644 | get_formatted_print_options (&opts, 'd'); |
10645 | opts.raw = 1; | |
d7e74731 | 10646 | value_print (v, &buf, &opts); |
98bfdba5 | 10647 | release_value (v); |
98bfdba5 PA |
10648 | } |
10649 | } | |
10650 | ||
10651 | die->building_fullname = 0; | |
10652 | ||
10653 | if (!first) | |
10654 | { | |
10655 | /* Close the argument list, with a space if necessary | |
10656 | (nested templates). */ | |
d7e74731 PA |
10657 | if (!buf.empty () && buf.string ().back () == '>') |
10658 | buf.puts (" >"); | |
98bfdba5 | 10659 | else |
d7e74731 | 10660 | buf.puts (">"); |
98bfdba5 PA |
10661 | } |
10662 | } | |
10663 | ||
9c37b5ae | 10664 | /* For C++ methods, append formal parameter type |
94af9270 | 10665 | information, if PHYSNAME. */ |
6e70227d | 10666 | |
94af9270 | 10667 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10668 | && cu->language == language_cplus) |
94af9270 KS |
10669 | { |
10670 | struct type *type = read_type_die (die, cu); | |
10671 | ||
d7e74731 | 10672 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10673 | &type_print_raw_options); |
94af9270 | 10674 | |
9c37b5ae | 10675 | if (cu->language == language_cplus) |
94af9270 | 10676 | { |
60430eff DJ |
10677 | /* Assume that an artificial first parameter is |
10678 | "this", but do not crash if it is not. RealView | |
10679 | marks unnamed (and thus unused) parameters as | |
10680 | artificial; there is no way to differentiate | |
10681 | the two cases. */ | |
1f704f76 | 10682 | if (type->num_fields () > 0 |
94af9270 | 10683 | && TYPE_FIELD_ARTIFICIAL (type, 0) |
940da03e SM |
10684 | && type->field (0).type ()->code () == TYPE_CODE_PTR |
10685 | && TYPE_CONST (TYPE_TARGET_TYPE (type->field (0).type ()))) | |
d7e74731 | 10686 | buf.puts (" const"); |
94af9270 KS |
10687 | } |
10688 | } | |
10689 | ||
d7e74731 | 10690 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10691 | |
10692 | if (cu->language == language_cplus) | |
34a68019 | 10693 | canonical_name |
322a8516 | 10694 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10695 | objfile); |
34a68019 TT |
10696 | |
10697 | /* If we only computed INTERMEDIATE_NAME, or if | |
10698 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10699 | intern it. */ |
322a8516 | 10700 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10701 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10702 | else |
10703 | name = canonical_name; | |
94af9270 KS |
10704 | } |
10705 | } | |
10706 | ||
10707 | return name; | |
10708 | } | |
10709 | ||
0114d602 DJ |
10710 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10711 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10712 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10713 | not have a name. NAME may either be from a previous call to |
10714 | dwarf2_name or NULL. | |
10715 | ||
9c37b5ae | 10716 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10717 | |
10718 | static const char * | |
15d034d0 | 10719 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10720 | { |
94af9270 KS |
10721 | return dwarf2_compute_name (name, die, cu, 0); |
10722 | } | |
0114d602 | 10723 | |
94af9270 KS |
10724 | /* Construct a physname for the given DIE in CU. NAME may either be |
10725 | from a previous call to dwarf2_name or NULL. The result will be | |
10726 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10727 | name. | |
0114d602 | 10728 | |
9c37b5ae | 10729 | The output string will be canonicalized (if C++). */ |
0114d602 | 10730 | |
94af9270 | 10731 | static const char * |
15d034d0 | 10732 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10733 | { |
5e22e966 | 10734 | struct objfile *objfile = cu->per_objfile->objfile; |
900e11f9 | 10735 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10736 | int need_copy = 1; |
10737 | ||
10738 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10739 | on its own. */ | |
10740 | if (!die_needs_namespace (die, cu)) | |
10741 | return dwarf2_compute_name (name, die, cu, 1); | |
10742 | ||
906bb4c5 TT |
10743 | if (cu->language != language_rust) |
10744 | mangled = dw2_linkage_name (die, cu); | |
900e11f9 JK |
10745 | |
10746 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10747 | has computed. */ | |
791afaa2 | 10748 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10749 | if (mangled != NULL) |
900e11f9 | 10750 | { |
900e11f9 | 10751 | |
d3355e4d | 10752 | if (language_def (cu->language)->store_sym_names_in_linkage_form_p ()) |
59cc4834 JB |
10753 | { |
10754 | /* Do nothing (do not demangle the symbol name). */ | |
10755 | } | |
a766d390 DE |
10756 | else |
10757 | { | |
0eb876f5 JB |
10758 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10759 | their return type. It is easier for GDB users to search | |
10760 | for such functions as `name(params)' than `long name(params)'. | |
10761 | In such case the minimal symbol names do not match the full | |
10762 | symbol names but for template functions there is never a need | |
10763 | to look up their definition from their declaration so | |
10764 | the only disadvantage remains the minimal symbol variant | |
10765 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10766 | demangled.reset (gdb_demangle (mangled, |
10767 | (DMGL_PARAMS | DMGL_ANSI | |
10768 | | DMGL_RET_DROP))); | |
a766d390 | 10769 | } |
900e11f9 | 10770 | if (demangled) |
791afaa2 | 10771 | canon = demangled.get (); |
900e11f9 JK |
10772 | else |
10773 | { | |
10774 | canon = mangled; | |
10775 | need_copy = 0; | |
10776 | } | |
10777 | } | |
10778 | ||
10779 | if (canon == NULL || check_physname) | |
10780 | { | |
10781 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10782 | ||
10783 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10784 | { | |
10785 | /* It may not mean a bug in GDB. The compiler could also | |
10786 | compute DW_AT_linkage_name incorrectly. But in such case | |
10787 | GDB would need to be bug-to-bug compatible. */ | |
10788 | ||
b98664d3 | 10789 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10790 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10791 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10792 | objfile_name (objfile)); |
900e11f9 JK |
10793 | |
10794 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10795 | is available here - over computed PHYSNAME. It is safer | |
10796 | against both buggy GDB and buggy compilers. */ | |
10797 | ||
10798 | retval = canon; | |
10799 | } | |
10800 | else | |
10801 | { | |
10802 | retval = physname; | |
10803 | need_copy = 0; | |
10804 | } | |
10805 | } | |
10806 | else | |
10807 | retval = canon; | |
10808 | ||
10809 | if (need_copy) | |
be1e3d3e | 10810 | retval = objfile->intern (retval); |
900e11f9 | 10811 | |
900e11f9 | 10812 | return retval; |
0114d602 DJ |
10813 | } |
10814 | ||
74921315 KS |
10815 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10816 | a new symbol for it. | |
10817 | ||
10818 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10819 | ||
10820 | static int | |
10821 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10822 | { | |
10823 | struct attribute *attr; | |
10824 | ||
10825 | /* If the die does not have a name, this is not a namespace | |
10826 | alias. */ | |
10827 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10828 | if (attr != NULL) | |
10829 | { | |
10830 | int num; | |
10831 | struct die_info *d = die; | |
10832 | struct dwarf2_cu *imported_cu = cu; | |
10833 | ||
10834 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10835 | keep inspecting DIEs until we hit the underlying import. */ | |
10836 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10837 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10838 | { | |
10839 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10840 | if (attr == NULL) | |
10841 | break; | |
10842 | ||
10843 | d = follow_die_ref (d, attr, &imported_cu); | |
10844 | if (d->tag != DW_TAG_imported_declaration) | |
10845 | break; | |
10846 | } | |
10847 | ||
10848 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10849 | { | |
b98664d3 | 10850 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10851 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10852 | return 0; |
10853 | } | |
10854 | ||
10855 | if (attr != NULL) | |
10856 | { | |
10857 | struct type *type; | |
0826b30a | 10858 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10859 | |
aa66c379 | 10860 | type = get_die_type_at_offset (sect_off, cu->per_cu, cu->per_objfile); |
78134374 | 10861 | if (type != NULL && type->code () == TYPE_CODE_NAMESPACE) |
74921315 KS |
10862 | { |
10863 | /* This declaration is a global namespace alias. Add | |
10864 | a symbol for it whose type is the aliased namespace. */ | |
10865 | new_symbol (die, type, cu); | |
10866 | return 1; | |
10867 | } | |
10868 | } | |
10869 | } | |
10870 | ||
10871 | return 0; | |
10872 | } | |
10873 | ||
22cee43f | 10874 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10875 | current context for CU. |
22cee43f PMR |
10876 | |
10877 | For Ada, imported declarations can materialize renamings, which *may* be | |
10878 | global. However it is impossible (for now?) in DWARF to distinguish | |
10879 | "external" imported declarations and "static" ones. As all imported | |
10880 | declarations seem to be static in all other languages, make them all CU-wide | |
10881 | global only in Ada. */ | |
10882 | ||
10883 | static struct using_direct ** | |
804d2729 | 10884 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10885 | { |
c24bdb02 KS |
10886 | if (cu->language == language_ada |
10887 | && cu->get_builder ()->outermost_context_p ()) | |
10888 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10889 | else |
c24bdb02 | 10890 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10891 | } |
10892 | ||
27aa8d6a SW |
10893 | /* Read the import statement specified by the given die and record it. */ |
10894 | ||
10895 | static void | |
10896 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10897 | { | |
5e22e966 | 10898 | struct objfile *objfile = cu->per_objfile->objfile; |
27aa8d6a | 10899 | struct attribute *import_attr; |
32019081 | 10900 | struct die_info *imported_die, *child_die; |
de4affc9 | 10901 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10902 | const char *imported_name; |
794684b6 | 10903 | const char *imported_name_prefix; |
13387711 SW |
10904 | const char *canonical_name; |
10905 | const char *import_alias; | |
10906 | const char *imported_declaration = NULL; | |
794684b6 | 10907 | const char *import_prefix; |
eb1e02fd | 10908 | std::vector<const char *> excludes; |
13387711 | 10909 | |
27aa8d6a SW |
10910 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10911 | if (import_attr == NULL) | |
10912 | { | |
b98664d3 | 10913 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10914 | dwarf_tag_name (die->tag)); |
10915 | return; | |
10916 | } | |
10917 | ||
de4affc9 CC |
10918 | imported_cu = cu; |
10919 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10920 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10921 | if (imported_name == NULL) |
10922 | { | |
10923 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10924 | ||
dda83cd7 SM |
10925 | The import in the following code: |
10926 | namespace A | |
10927 | { | |
10928 | typedef int B; | |
10929 | } | |
10930 | ||
10931 | int main () | |
10932 | { | |
10933 | using A::B; | |
10934 | B b; | |
10935 | return b; | |
10936 | } | |
10937 | ||
10938 | ... | |
10939 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10940 | <52> DW_AT_decl_file : 1 | |
10941 | <53> DW_AT_decl_line : 6 | |
10942 | <54> DW_AT_import : <0x75> | |
10943 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10944 | <59> DW_AT_name : B | |
10945 | <5b> DW_AT_decl_file : 1 | |
10946 | <5c> DW_AT_decl_line : 2 | |
10947 | <5d> DW_AT_type : <0x6e> | |
10948 | ... | |
10949 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10950 | <76> DW_AT_byte_size : 4 | |
10951 | <77> DW_AT_encoding : 5 (signed) | |
10952 | ||
10953 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10954 | This case will be ignored until the gcc bug is fixed. */ | |
27aa8d6a SW |
10955 | return; |
10956 | } | |
10957 | ||
82856980 SW |
10958 | /* Figure out the local name after import. */ |
10959 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10960 | |
794684b6 SW |
10961 | /* Figure out where the statement is being imported to. */ |
10962 | import_prefix = determine_prefix (die, cu); | |
10963 | ||
10964 | /* Figure out what the scope of the imported die is and prepend it | |
10965 | to the name of the imported die. */ | |
de4affc9 | 10966 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10967 | |
f55ee35c JK |
10968 | if (imported_die->tag != DW_TAG_namespace |
10969 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10970 | { |
13387711 SW |
10971 | imported_declaration = imported_name; |
10972 | canonical_name = imported_name_prefix; | |
794684b6 | 10973 | } |
13387711 | 10974 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10975 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10976 | imported_name_prefix, |
10977 | (cu->language == language_d ? "." : "::"), | |
10978 | imported_name, (char *) NULL); | |
13387711 SW |
10979 | else |
10980 | canonical_name = imported_name; | |
794684b6 | 10981 | |
32019081 JK |
10982 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10983 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10984 | child_die = child_die->sibling) |
32019081 JK |
10985 | { |
10986 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10987 | represented by an imported module entry with an import attribute | |
10988 | referring to the module and owned entries corresponding to those | |
10989 | entities that are renamed as part of being imported. */ | |
10990 | ||
10991 | if (child_die->tag != DW_TAG_imported_declaration) | |
10992 | { | |
b98664d3 | 10993 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10994 | "- DIE at %s [in module %s]"), |
10995 | sect_offset_str (child_die->sect_off), | |
10996 | objfile_name (objfile)); | |
32019081 JK |
10997 | continue; |
10998 | } | |
10999 | ||
11000 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
11001 | if (import_attr == NULL) | |
11002 | { | |
b98664d3 | 11003 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
11004 | dwarf_tag_name (child_die->tag)); |
11005 | continue; | |
11006 | } | |
11007 | ||
11008 | imported_cu = cu; | |
11009 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
11010 | &imported_cu); | |
11011 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11012 | if (imported_name == NULL) | |
11013 | { | |
b98664d3 | 11014 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
11015 | "imported name - DIE at %s [in module %s]"), |
11016 | sect_offset_str (child_die->sect_off), | |
11017 | objfile_name (objfile)); | |
32019081 JK |
11018 | continue; |
11019 | } | |
11020 | ||
eb1e02fd | 11021 | excludes.push_back (imported_name); |
32019081 JK |
11022 | |
11023 | process_die (child_die, cu); | |
11024 | } | |
11025 | ||
804d2729 | 11026 | add_using_directive (using_directives (cu), |
22cee43f PMR |
11027 | import_prefix, |
11028 | canonical_name, | |
11029 | import_alias, | |
11030 | imported_declaration, | |
11031 | excludes, | |
11032 | 0, | |
11033 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11034 | } |
11035 | ||
5230b05a WT |
11036 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11037 | types, but gives them a size of zero. Starting with version 14, | |
11038 | ICC is compatible with GCC. */ | |
11039 | ||
9068261f | 11040 | static bool |
5230b05a WT |
11041 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
11042 | { | |
11043 | if (!cu->checked_producer) | |
11044 | check_producer (cu); | |
11045 | ||
11046 | return cu->producer_is_icc_lt_14; | |
11047 | } | |
11048 | ||
eb77c9df AB |
11049 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
11050 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
11051 | which says that void functions should not have a DW_AT_type. */ | |
11052 | ||
11053 | static bool | |
11054 | producer_is_icc (struct dwarf2_cu *cu) | |
11055 | { | |
11056 | if (!cu->checked_producer) | |
11057 | check_producer (cu); | |
11058 | ||
11059 | return cu->producer_is_icc; | |
11060 | } | |
11061 | ||
1b80a9fa JK |
11062 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11063 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11064 | this, it was first present in GCC release 4.3.0. */ | |
11065 | ||
9068261f | 11066 | static bool |
1b80a9fa JK |
11067 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
11068 | { | |
11069 | if (!cu->checked_producer) | |
11070 | check_producer (cu); | |
11071 | ||
11072 | return cu->producer_is_gcc_lt_4_3; | |
11073 | } | |
11074 | ||
d721ba37 PA |
11075 | static file_and_directory |
11076 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11077 | { |
d721ba37 PA |
11078 | file_and_directory res; |
11079 | ||
9291a0cd TT |
11080 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11081 | is not a source language identifier. */ | |
d721ba37 PA |
11082 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11083 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11084 | |
d721ba37 PA |
11085 | if (res.comp_dir == NULL |
11086 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11087 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11088 | { |
d721ba37 PA |
11089 | res.comp_dir_storage = ldirname (res.name); |
11090 | if (!res.comp_dir_storage.empty ()) | |
11091 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11092 | } |
d721ba37 | 11093 | if (res.comp_dir != NULL) |
9291a0cd TT |
11094 | { |
11095 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11096 | directory, get rid of it. */ | |
d721ba37 | 11097 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11098 | |
d721ba37 PA |
11099 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11100 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11101 | } |
11102 | ||
d721ba37 PA |
11103 | if (res.name == NULL) |
11104 | res.name = "<unknown>"; | |
11105 | ||
11106 | return res; | |
9291a0cd TT |
11107 | } |
11108 | ||
f4dc4d17 DE |
11109 | /* Handle DW_AT_stmt_list for a compilation unit. |
11110 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11111 | COMP_DIR is the compilation directory. LOWPC is passed to |
11112 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11113 | |
11114 | static void | |
11115 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11116 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11117 | { |
976ca316 | 11118 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
2ab95328 | 11119 | struct attribute *attr; |
527f3840 JK |
11120 | struct line_header line_header_local; |
11121 | hashval_t line_header_local_hash; | |
527f3840 JK |
11122 | void **slot; |
11123 | int decode_mapping; | |
2ab95328 | 11124 | |
f4dc4d17 DE |
11125 | gdb_assert (! cu->per_cu->is_debug_types); |
11126 | ||
2ab95328 | 11127 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
d4df075e | 11128 | if (attr == NULL || !attr->form_is_unsigned ()) |
527f3840 JK |
11129 | return; |
11130 | ||
d4df075e | 11131 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
527f3840 JK |
11132 | |
11133 | /* The line header hash table is only created if needed (it exists to | |
11134 | prevent redundant reading of the line table for partial_units). | |
11135 | If we're given a partial_unit, we'll need it. If we're given a | |
11136 | compile_unit, then use the line header hash table if it's already | |
11137 | created, but don't create one just yet. */ | |
11138 | ||
976ca316 | 11139 | if (per_objfile->line_header_hash == NULL |
527f3840 | 11140 | && die->tag == DW_TAG_partial_unit) |
2ab95328 | 11141 | { |
976ca316 | 11142 | per_objfile->line_header_hash |
d15acc42 TT |
11143 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
11144 | line_header_eq_voidp, | |
11145 | free_line_header_voidp, | |
11146 | xcalloc, xfree)); | |
527f3840 | 11147 | } |
2ab95328 | 11148 | |
9c541725 | 11149 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11150 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11151 | line_header_local_hash = line_header_hash (&line_header_local); | |
976ca316 | 11152 | if (per_objfile->line_header_hash != NULL) |
527f3840 | 11153 | { |
976ca316 | 11154 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
11155 | &line_header_local, |
11156 | line_header_local_hash, NO_INSERT); | |
11157 | ||
11158 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11159 | is not present in *SLOT (since if there is something in *SLOT then | |
11160 | it will be for a partial_unit). */ | |
11161 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11162 | { |
527f3840 | 11163 | gdb_assert (*slot != NULL); |
9a3c8263 | 11164 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11165 | return; |
dee91e82 | 11166 | } |
2ab95328 | 11167 | } |
527f3840 JK |
11168 | |
11169 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11170 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11171 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11172 | if (lh == NULL) | |
527f3840 | 11173 | return; |
4c8aa72d PA |
11174 | |
11175 | cu->line_header = lh.release (); | |
11176 | cu->line_header_die_owner = die; | |
527f3840 | 11177 | |
976ca316 | 11178 | if (per_objfile->line_header_hash == NULL) |
527f3840 JK |
11179 | slot = NULL; |
11180 | else | |
11181 | { | |
976ca316 | 11182 | slot = htab_find_slot_with_hash (per_objfile->line_header_hash.get (), |
527f3840 JK |
11183 | &line_header_local, |
11184 | line_header_local_hash, INSERT); | |
11185 | gdb_assert (slot != NULL); | |
11186 | } | |
11187 | if (slot != NULL && *slot == NULL) | |
11188 | { | |
11189 | /* This newly decoded line number information unit will be owned | |
11190 | by line_header_hash hash table. */ | |
11191 | *slot = cu->line_header; | |
4c8aa72d | 11192 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11193 | } |
11194 | else | |
11195 | { | |
11196 | /* We cannot free any current entry in (*slot) as that struct line_header | |
dda83cd7 | 11197 | may be already used by multiple CUs. Create only temporary decoded |
527f3840 JK |
11198 | line_header for this CU - it may happen at most once for each line |
11199 | number information unit. And if we're not using line_header_hash | |
11200 | then this is what we want as well. */ | |
11201 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11202 | } |
11203 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11204 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11205 | decode_mapping); | |
fff8551c | 11206 | |
2ab95328 TT |
11207 | } |
11208 | ||
95554aad | 11209 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11210 | |
c906108c | 11211 | static void |
e7c27a73 | 11212 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11213 | { |
976ca316 SM |
11214 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
11215 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 11216 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 11217 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11218 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11219 | struct attribute *attr; | |
c906108c | 11220 | struct die_info *child_die; |
e142c38c | 11221 | CORE_ADDR baseaddr; |
6e70227d | 11222 | |
380618d6 | 11223 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 11224 | baseaddr = objfile->text_section_offset (); |
c906108c | 11225 | |
fae299cd | 11226 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11227 | |
11228 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11229 | from finish_block. */ | |
2acceee2 | 11230 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11231 | lowpc = highpc; |
3e29f34a | 11232 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11233 | |
d721ba37 | 11234 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11235 | |
f4b8a18d KW |
11236 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11237 | standardised yet. As a workaround for the language detection we fall | |
11238 | back to the DW_AT_producer string. */ | |
11239 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11240 | cu->language = language_opencl; | |
11241 | ||
3019eac3 DE |
11242 | /* Similar hack for Go. */ |
11243 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11244 | set_cu_language (DW_LANG_Go, cu); | |
11245 | ||
c24bdb02 | 11246 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11247 | |
11248 | /* Decode line number information if present. We do this before | |
11249 | processing child DIEs, so that the line header table is available | |
11250 | for DW_AT_decl_file. */ | |
d721ba37 | 11251 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11252 | |
11253 | /* Process all dies in compilation unit. */ | |
11254 | if (die->child != NULL) | |
11255 | { | |
11256 | child_die = die->child; | |
11257 | while (child_die && child_die->tag) | |
11258 | { | |
11259 | process_die (child_die, cu); | |
436c571c | 11260 | child_die = child_die->sibling; |
3019eac3 DE |
11261 | } |
11262 | } | |
11263 | ||
11264 | /* Decode macro information, if present. Dwarf 2 macro information | |
11265 | refers to information in the line number info statement program | |
11266 | header, so we can only read it if we've read the header | |
11267 | successfully. */ | |
0af92d60 JK |
11268 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11269 | if (attr == NULL) | |
11270 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
529908cb | 11271 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 DE |
11272 | { |
11273 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11274 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11275 | |
529908cb | 11276 | dwarf_decode_macros (cu, attr->as_unsigned (), 1); |
3019eac3 DE |
11277 | } |
11278 | else | |
11279 | { | |
11280 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
529908cb | 11281 | if (attr != nullptr && attr->form_is_unsigned () && cu->line_header) |
3019eac3 | 11282 | { |
529908cb | 11283 | unsigned int macro_offset = attr->as_unsigned (); |
3019eac3 | 11284 | |
43f3e411 | 11285 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11286 | } |
11287 | } | |
3019eac3 DE |
11288 | } |
11289 | ||
c24bdb02 KS |
11290 | void |
11291 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11292 | { |
f4dc4d17 DE |
11293 | struct type_unit_group *tu_group; |
11294 | int first_time; | |
3019eac3 | 11295 | struct attribute *attr; |
9c541725 | 11296 | unsigned int i; |
0186c6a7 | 11297 | struct signatured_type *sig_type; |
3019eac3 | 11298 | |
f4dc4d17 | 11299 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11300 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11301 | |
c24bdb02 | 11302 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11303 | |
f4dc4d17 | 11304 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11305 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11306 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11307 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11308 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11309 | |
11310 | /* If we've already processed this stmt_list there's no real need to | |
11311 | do it again, we could fake it and just recreate the part we need | |
11312 | (file name,index -> symtab mapping). If data shows this optimization | |
11313 | is useful we can do it then. */ | |
8adb8487 TT |
11314 | type_unit_group_unshareable *tug_unshare |
11315 | = per_objfile->get_type_unit_group_unshareable (tu_group); | |
11316 | first_time = tug_unshare->compunit_symtab == NULL; | |
f4dc4d17 DE |
11317 | |
11318 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11319 | debug info. */ | |
fff8551c | 11320 | line_header_up lh; |
d4df075e | 11321 | if (attr != NULL && attr->form_is_unsigned ()) |
3019eac3 | 11322 | { |
d4df075e | 11323 | sect_offset line_offset = (sect_offset) attr->as_unsigned (); |
c24bdb02 | 11324 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11325 | } |
11326 | if (lh == NULL) | |
11327 | { | |
11328 | if (first_time) | |
c24bdb02 | 11329 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11330 | else |
11331 | { | |
8adb8487 | 11332 | gdb_assert (tug_unshare->symtabs == NULL); |
c24bdb02 | 11333 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11334 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11335 | m_builder.reset (new struct buildsym_compunit |
11336 | (COMPUNIT_OBJFILE (cust), "", | |
11337 | COMPUNIT_DIRNAME (cust), | |
11338 | compunit_language (cust), | |
11339 | 0, cust)); | |
770479f2 | 11340 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11341 | } |
f4dc4d17 | 11342 | return; |
3019eac3 DE |
11343 | } |
11344 | ||
c24bdb02 KS |
11345 | line_header = lh.release (); |
11346 | line_header_die_owner = die; | |
3019eac3 | 11347 | |
f4dc4d17 DE |
11348 | if (first_time) |
11349 | { | |
c24bdb02 | 11350 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11351 | |
1fd60fc0 DE |
11352 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11353 | still initializing it, and our caller (a few levels up) | |
11354 | process_full_type_unit still needs to know if this is the first | |
11355 | time. */ | |
11356 | ||
8adb8487 | 11357 | tug_unshare->symtabs |
4ac93832 TT |
11358 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, |
11359 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 11360 | |
7ba99d21 AT |
11361 | auto &file_names = line_header->file_names (); |
11362 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11363 | { |
7ba99d21 | 11364 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11365 | dwarf2_start_subfile (this, fe.name, |
11366 | fe.include_dir (line_header)); | |
11367 | buildsym_compunit *b = get_builder (); | |
11368 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11369 | { |
4c8aa72d PA |
11370 | /* NOTE: start_subfile will recognize when it's been |
11371 | passed a file it has already seen. So we can't | |
11372 | assume there's a simple mapping from | |
11373 | cu->line_header->file_names to subfiles, plus | |
11374 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11375 | b->get_current_subfile ()->symtab |
11376 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11377 | } |
11378 | ||
c24bdb02 | 11379 | fe.symtab = b->get_current_subfile ()->symtab; |
8adb8487 | 11380 | tug_unshare->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11381 | } |
11382 | } | |
11383 | else | |
3019eac3 | 11384 | { |
c24bdb02 | 11385 | gdb_assert (m_builder == nullptr); |
8adb8487 | 11386 | struct compunit_symtab *cust = tug_unshare->compunit_symtab; |
c24bdb02 KS |
11387 | m_builder.reset (new struct buildsym_compunit |
11388 | (COMPUNIT_OBJFILE (cust), "", | |
11389 | COMPUNIT_DIRNAME (cust), | |
11390 | compunit_language (cust), | |
11391 | 0, cust)); | |
770479f2 | 11392 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11393 | |
7ba99d21 AT |
11394 | auto &file_names = line_header->file_names (); |
11395 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11396 | { |
7ba99d21 | 11397 | file_entry &fe = file_names[i]; |
8adb8487 | 11398 | fe.symtab = tug_unshare->symtabs[i]; |
f4dc4d17 | 11399 | } |
3019eac3 DE |
11400 | } |
11401 | ||
f4dc4d17 DE |
11402 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11403 | so they don't have a "real" (so to speak) symtab anyway. | |
11404 | There is later code that will assign the main symtab to all symbols | |
11405 | that don't have one. We need to handle the case of a symbol with a | |
11406 | missing symtab (DW_AT_decl_file) anyway. */ | |
11407 | } | |
3019eac3 | 11408 | |
f4dc4d17 DE |
11409 | /* Process DW_TAG_type_unit. |
11410 | For TUs we want to skip the first top level sibling if it's not the | |
11411 | actual type being defined by this TU. In this case the first top | |
11412 | level sibling is there to provide context only. */ | |
3019eac3 | 11413 | |
f4dc4d17 DE |
11414 | static void |
11415 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11416 | { | |
11417 | struct die_info *child_die; | |
3019eac3 | 11418 | |
f4dc4d17 DE |
11419 | prepare_one_comp_unit (cu, die, language_minimal); |
11420 | ||
11421 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11422 | We do this before processing child DIEs, so that the line header table | |
11423 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11424 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11425 | |
11426 | if (die->child != NULL) | |
11427 | { | |
11428 | child_die = die->child; | |
11429 | while (child_die && child_die->tag) | |
11430 | { | |
11431 | process_die (child_die, cu); | |
436c571c | 11432 | child_die = child_die->sibling; |
f4dc4d17 DE |
11433 | } |
11434 | } | |
3019eac3 DE |
11435 | } |
11436 | \f | |
80626a55 DE |
11437 | /* DWO/DWP files. |
11438 | ||
11439 | http://gcc.gnu.org/wiki/DebugFission | |
11440 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11441 | ||
11442 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11443 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11444 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11445 | |
11446 | static hashval_t | |
11447 | hash_dwo_file (const void *item) | |
11448 | { | |
9a3c8263 | 11449 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11450 | hashval_t hash; |
3019eac3 | 11451 | |
a2ce51a0 DE |
11452 | hash = htab_hash_string (dwo_file->dwo_name); |
11453 | if (dwo_file->comp_dir != NULL) | |
11454 | hash += htab_hash_string (dwo_file->comp_dir); | |
11455 | return hash; | |
3019eac3 DE |
11456 | } |
11457 | ||
11458 | static int | |
11459 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11460 | { | |
9a3c8263 SM |
11461 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11462 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11463 | |
a2ce51a0 DE |
11464 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11465 | return 0; | |
11466 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11467 | return lhs->comp_dir == rhs->comp_dir; | |
11468 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11469 | } |
11470 | ||
11471 | /* Allocate a hash table for DWO files. */ | |
11472 | ||
51ac9db5 | 11473 | static htab_up |
298e9637 | 11474 | allocate_dwo_file_hash_table () |
3019eac3 | 11475 | { |
51ac9db5 SM |
11476 | auto delete_dwo_file = [] (void *item) |
11477 | { | |
11478 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11479 | ||
11480 | delete dwo_file; | |
11481 | }; | |
11482 | ||
bc68fb19 TT |
11483 | return htab_up (htab_create_alloc (41, |
11484 | hash_dwo_file, | |
11485 | eq_dwo_file, | |
11486 | delete_dwo_file, | |
11487 | xcalloc, xfree)); | |
3019eac3 DE |
11488 | } |
11489 | ||
80626a55 DE |
11490 | /* Lookup DWO file DWO_NAME. */ |
11491 | ||
11492 | static void ** | |
976ca316 | 11493 | lookup_dwo_file_slot (dwarf2_per_objfile *per_objfile, |
ed2dc618 SM |
11494 | const char *dwo_name, |
11495 | const char *comp_dir) | |
80626a55 DE |
11496 | { |
11497 | struct dwo_file find_entry; | |
11498 | void **slot; | |
11499 | ||
976ca316 SM |
11500 | if (per_objfile->per_bfd->dwo_files == NULL) |
11501 | per_objfile->per_bfd->dwo_files = allocate_dwo_file_hash_table (); | |
80626a55 | 11502 | |
0ac5b59e DE |
11503 | find_entry.dwo_name = dwo_name; |
11504 | find_entry.comp_dir = comp_dir; | |
976ca316 | 11505 | slot = htab_find_slot (per_objfile->per_bfd->dwo_files.get (), &find_entry, |
51ac9db5 | 11506 | INSERT); |
80626a55 DE |
11507 | |
11508 | return slot; | |
11509 | } | |
11510 | ||
3019eac3 DE |
11511 | static hashval_t |
11512 | hash_dwo_unit (const void *item) | |
11513 | { | |
9a3c8263 | 11514 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11515 | |
11516 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11517 | return dwo_unit->signature; | |
11518 | } | |
11519 | ||
11520 | static int | |
11521 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11522 | { | |
9a3c8263 SM |
11523 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11524 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11525 | |
11526 | /* The signature is assumed to be unique within the DWO file. | |
11527 | So while object file CU dwo_id's always have the value zero, | |
11528 | that's OK, assuming each object file DWO file has only one CU, | |
11529 | and that's the rule for now. */ | |
11530 | return lhs->signature == rhs->signature; | |
11531 | } | |
11532 | ||
11533 | /* Allocate a hash table for DWO CUs,TUs. | |
11534 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11535 | ||
b0b6a987 | 11536 | static htab_up |
298e9637 | 11537 | allocate_dwo_unit_table () |
3019eac3 DE |
11538 | { |
11539 | /* Start out with a pretty small number. | |
11540 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11541 | return htab_up (htab_create_alloc (3, |
11542 | hash_dwo_unit, | |
11543 | eq_dwo_unit, | |
11544 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11545 | } |
11546 | ||
19c3d4c9 | 11547 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11548 | |
11549 | static void | |
19c3d4c9 DE |
11550 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11551 | const gdb_byte *info_ptr, | |
11552 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11553 | struct dwo_file *dwo_file, |
11554 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11555 | { |
11556 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11557 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11558 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11559 | |
a084a2a6 AT |
11560 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11561 | if (!signature.has_value ()) | |
3019eac3 | 11562 | { |
b98664d3 | 11563 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11564 | " its dwo_id [in module %s]"), |
9d8780f0 | 11565 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11566 | return; |
11567 | } | |
11568 | ||
3019eac3 | 11569 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11570 | dwo_unit->signature = *signature; |
8a0459fd | 11571 | dwo_unit->section = section; |
9c541725 | 11572 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11573 | dwo_unit->length = cu->per_cu->length; |
11574 | ||
6f738b01 SM |
11575 | dwarf_read_debug_printf (" offset %s, dwo_id %s", |
11576 | sect_offset_str (sect_off), | |
11577 | hex_string (dwo_unit->signature)); | |
3019eac3 DE |
11578 | } |
11579 | ||
33c5cd75 | 11580 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11581 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11582 | |
33c5cd75 | 11583 | static void |
976ca316 | 11584 | create_cus_hash_table (dwarf2_per_objfile *per_objfile, |
18a8505e | 11585 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11586 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 | 11587 | { |
976ca316 SM |
11588 | struct objfile *objfile = per_objfile->objfile; |
11589 | dwarf2_per_bfd *per_bfd = per_objfile->per_bfd; | |
d521ce57 | 11590 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11591 | |
96b79293 | 11592 | section.read (objfile); |
33c5cd75 | 11593 | info_ptr = section.buffer; |
3019eac3 DE |
11594 | |
11595 | if (info_ptr == NULL) | |
33c5cd75 | 11596 | return; |
3019eac3 | 11597 | |
6f738b01 SM |
11598 | dwarf_read_debug_printf ("Reading %s for %s:", |
11599 | section.get_name (), | |
11600 | section.get_file_name ()); | |
3019eac3 | 11601 | |
33c5cd75 | 11602 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11603 | while (info_ptr < end_ptr) |
11604 | { | |
11605 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11606 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11607 | struct dwo_unit *dwo_unit; |
11608 | void **slot; | |
11609 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11610 | |
11611 | memset (&per_cu, 0, sizeof (per_cu)); | |
1859c670 | 11612 | per_cu.per_bfd = per_bfd; |
3019eac3 | 11613 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11614 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11615 | per_cu.section = §ion; | |
11616 | ||
976ca316 | 11617 | cutu_reader reader (&per_cu, per_objfile, cu, &dwo_file); |
c0ab21c2 TT |
11618 | if (!reader.dummy_p) |
11619 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11620 | &dwo_file, &read_unit); |
33c5cd75 DB |
11621 | info_ptr += per_cu.length; |
11622 | ||
11623 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11624 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11625 | continue; |
3019eac3 | 11626 | |
33c5cd75 | 11627 | if (cus_htab == NULL) |
298e9637 | 11628 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11629 | |
1859c670 | 11630 | dwo_unit = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 11631 | struct dwo_unit); |
c0ab21c2 | 11632 | *dwo_unit = read_unit; |
b0b6a987 | 11633 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11634 | gdb_assert (slot != NULL); |
11635 | if (*slot != NULL) | |
19c3d4c9 | 11636 | { |
33c5cd75 DB |
11637 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11638 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11639 | |
b98664d3 | 11640 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11641 | " the entry at offset %s, signature %s"), |
11642 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11643 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11644 | } |
33c5cd75 | 11645 | *slot = (void *)dwo_unit; |
3019eac3 | 11646 | } |
3019eac3 DE |
11647 | } |
11648 | ||
80626a55 DE |
11649 | /* DWP file .debug_{cu,tu}_index section format: |
11650 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
d2854d8d CT |
11651 | [ref: http://dwarfstd.org/doc/DWARF5.pdf, sect 7.3.5 "DWARF Package Files"] |
11652 | ||
11653 | DWP Versions 1 & 2 are older, pre-standard format versions. The first | |
11654 | officially standard DWP format was published with DWARF v5 and is called | |
11655 | Version 5. There are no versions 3 or 4. | |
80626a55 | 11656 | |
d2415c6c DE |
11657 | DWP Version 1: |
11658 | ||
80626a55 DE |
11659 | Both index sections have the same format, and serve to map a 64-bit |
11660 | signature to a set of section numbers. Each section begins with a header, | |
11661 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11662 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11663 | aligned at 8-byte boundaries in the file. | |
11664 | ||
d2415c6c DE |
11665 | The index section header consists of: |
11666 | ||
11667 | V, 32 bit version number | |
11668 | -, 32 bits unused | |
11669 | N, 32 bit number of compilation units or type units in the index | |
11670 | M, 32 bit number of slots in the hash table | |
80626a55 | 11671 | |
d2415c6c | 11672 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11673 | |
d2415c6c DE |
11674 | The hash table begins at offset 16 in the section, and consists of an array |
11675 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11676 | order of the application binary). Unused slots in the hash table are 0. | |
11677 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11678 | |
d2415c6c DE |
11679 | The parallel table begins immediately after the hash table |
11680 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11681 | array of 32-bit indexes (using the byte order of the application binary), | |
11682 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11683 | table contains a 32-bit index into the pool of section numbers. For unused | |
11684 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11685 | |
73869dc2 DE |
11686 | The pool of section numbers begins immediately following the hash table |
11687 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11688 | section numbers consists of an array of 32-bit words (using the byte order | |
11689 | of the application binary). Each item in the array is indexed starting | |
11690 | from 0. The hash table entry provides the index of the first section | |
11691 | number in the set. Additional section numbers in the set follow, and the | |
11692 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11693 | ||
11694 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11695 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11696 | be the second entry. Other members of the set may follow in any order. | |
11697 | ||
11698 | --- | |
11699 | ||
d2854d8d | 11700 | DWP Versions 2 and 5: |
73869dc2 | 11701 | |
d2854d8d | 11702 | DWP Versions 2 and 5 combine all the .debug_info, etc. sections into one, |
73869dc2 DE |
11703 | and the entries in the index tables are now offsets into these sections. |
11704 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11705 | section. | |
11706 | ||
11707 | Index Section Contents: | |
11708 | Header | |
11709 | Hash Table of Signatures dwp_hash_table.hash_table | |
11710 | Parallel Table of Indices dwp_hash_table.unit_table | |
d2854d8d CT |
11711 | Table of Section Offsets dwp_hash_table.{v2|v5}.{section_ids,offsets} |
11712 | Table of Section Sizes dwp_hash_table.{v2|v5}.sizes | |
73869dc2 DE |
11713 | |
11714 | The index section header consists of: | |
11715 | ||
11716 | V, 32 bit version number | |
11717 | L, 32 bit number of columns in the table of section offsets | |
11718 | N, 32 bit number of compilation units or type units in the index | |
11719 | M, 32 bit number of slots in the hash table | |
11720 | ||
11721 | Numbers are recorded using the byte order of the application binary. | |
11722 | ||
11723 | The hash table has the same format as version 1. | |
11724 | The parallel table of indices has the same format as version 1, | |
11725 | except that the entries are origin-1 indices into the table of sections | |
11726 | offsets and the table of section sizes. | |
11727 | ||
11728 | The table of offsets begins immediately following the parallel table | |
11729 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11730 | a two-dimensional array of 32-bit words (using the byte order of the | |
11731 | application binary), with L columns and N+1 rows, in row-major order. | |
11732 | Each row in the array is indexed starting from 0. The first row provides | |
11733 | a key to the remaining rows: each column in this row provides an identifier | |
11734 | for a debug section, and the offsets in the same column of subsequent rows | |
d2854d8d | 11735 | refer to that section. The section identifiers for Version 2 are: |
73869dc2 DE |
11736 | |
11737 | DW_SECT_INFO 1 .debug_info.dwo | |
11738 | DW_SECT_TYPES 2 .debug_types.dwo | |
11739 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11740 | DW_SECT_LINE 4 .debug_line.dwo | |
11741 | DW_SECT_LOC 5 .debug_loc.dwo | |
11742 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11743 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11744 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11745 | ||
d2854d8d CT |
11746 | The section identifiers for Version 5 are: |
11747 | ||
11748 | DW_SECT_INFO_V5 1 .debug_info.dwo | |
11749 | DW_SECT_RESERVED_V5 2 -- | |
11750 | DW_SECT_ABBREV_V5 3 .debug_abbrev.dwo | |
11751 | DW_SECT_LINE_V5 4 .debug_line.dwo | |
11752 | DW_SECT_LOCLISTS_V5 5 .debug_loclists.dwo | |
11753 | DW_SECT_STR_OFFSETS_V5 6 .debug_str_offsets.dwo | |
11754 | DW_SECT_MACRO_V5 7 .debug_macro.dwo | |
11755 | DW_SECT_RNGLISTS_V5 8 .debug_rnglists.dwo | |
11756 | ||
73869dc2 DE |
11757 | The offsets provided by the CU and TU index sections are the base offsets |
11758 | for the contributions made by each CU or TU to the corresponding section | |
11759 | in the package file. Each CU and TU header contains an abbrev_offset | |
11760 | field, used to find the abbreviations table for that CU or TU within the | |
11761 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11762 | be interpreted as relative to the base offset given in the index section. | |
11763 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11764 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11765 | and offsets into other debug sections obtained from DWARF attributes should | |
11766 | also be interpreted as relative to the corresponding base offset. | |
11767 | ||
11768 | The table of sizes begins immediately following the table of offsets. | |
11769 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11770 | with L columns and N rows, in row-major order. Each row in the array is | |
11771 | indexed starting from 1 (row 0 is shared by the two tables). | |
11772 | ||
11773 | --- | |
11774 | ||
11775 | Hash table lookup is handled the same in version 1 and 2: | |
11776 | ||
11777 | We assume that N and M will not exceed 2^32 - 1. | |
11778 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11779 | ||
d2415c6c DE |
11780 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11781 | in the hash table is located as follows: | |
80626a55 | 11782 | |
d2415c6c DE |
11783 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11784 | the low-order k bits all set to 1. | |
80626a55 | 11785 | |
d2415c6c | 11786 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11787 | |
d2415c6c DE |
11788 | 3) If the hash table entry at index H matches the signature, use that |
11789 | entry. If the hash table entry at index H is unused (all zeroes), | |
11790 | terminate the search: the signature is not present in the table. | |
80626a55 | 11791 | |
d2415c6c | 11792 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11793 | |
d2415c6c | 11794 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11795 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11796 | |
11797 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11798 | .debug_{info,types}.dwo in DWP_FILE. | |
11799 | Returns NULL if there isn't one. | |
11800 | Note: This function processes DWP files only, not DWO files. */ | |
11801 | ||
11802 | static struct dwp_hash_table * | |
976ca316 | 11803 | create_dwp_hash_table (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 11804 | struct dwp_file *dwp_file, int is_debug_types) |
80626a55 | 11805 | { |
976ca316 | 11806 | struct objfile *objfile = per_objfile->objfile; |
400174b1 | 11807 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11808 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11809 | struct dwarf2_section_info *index; |
73869dc2 | 11810 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11811 | struct dwp_hash_table *htab; |
11812 | ||
11813 | if (is_debug_types) | |
11814 | index = &dwp_file->sections.tu_index; | |
11815 | else | |
11816 | index = &dwp_file->sections.cu_index; | |
11817 | ||
96b79293 | 11818 | if (index->empty ()) |
80626a55 | 11819 | return NULL; |
96b79293 | 11820 | index->read (objfile); |
80626a55 DE |
11821 | |
11822 | index_ptr = index->buffer; | |
11823 | index_end = index_ptr + index->size; | |
11824 | ||
d2854d8d CT |
11825 | /* For Version 5, the version is really 2 bytes of data & 2 bytes of padding. |
11826 | For now it's safe to just read 4 bytes (particularly as it's difficult to | |
11827 | tell if you're dealing with Version 5 before you've read the version). */ | |
80626a55 | 11828 | version = read_4_bytes (dbfd, index_ptr); |
73869dc2 | 11829 | index_ptr += 4; |
d2854d8d | 11830 | if (version == 2 || version == 5) |
73869dc2 DE |
11831 | nr_columns = read_4_bytes (dbfd, index_ptr); |
11832 | else | |
11833 | nr_columns = 0; | |
11834 | index_ptr += 4; | |
80626a55 DE |
11835 | nr_units = read_4_bytes (dbfd, index_ptr); |
11836 | index_ptr += 4; | |
11837 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11838 | index_ptr += 4; | |
11839 | ||
d2854d8d | 11840 | if (version != 1 && version != 2 && version != 5) |
80626a55 | 11841 | { |
21aa081e | 11842 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11843 | " [in module %s]"), |
21aa081e | 11844 | pulongest (version), dwp_file->name); |
80626a55 DE |
11845 | } |
11846 | if (nr_slots != (nr_slots & -nr_slots)) | |
11847 | { | |
21aa081e | 11848 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11849 | " is not power of 2 [in module %s]"), |
21aa081e | 11850 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11851 | } |
11852 | ||
976ca316 | 11853 | htab = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwp_hash_table); |
73869dc2 DE |
11854 | htab->version = version; |
11855 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11856 | htab->nr_units = nr_units; |
11857 | htab->nr_slots = nr_slots; | |
11858 | htab->hash_table = index_ptr; | |
11859 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11860 | |
11861 | /* Exit early if the table is empty. */ | |
11862 | if (nr_slots == 0 || nr_units == 0 | |
d2854d8d CT |
11863 | || (version == 2 && nr_columns == 0) |
11864 | || (version == 5 && nr_columns == 0)) | |
73869dc2 DE |
11865 | { |
11866 | /* All must be zero. */ | |
11867 | if (nr_slots != 0 || nr_units != 0 | |
d2854d8d CT |
11868 | || (version == 2 && nr_columns != 0) |
11869 | || (version == 5 && nr_columns != 0)) | |
73869dc2 | 11870 | { |
b98664d3 | 11871 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11872 | " all zero [in modules %s]"), |
11873 | dwp_file->name); | |
11874 | } | |
11875 | return htab; | |
11876 | } | |
11877 | ||
11878 | if (version == 1) | |
11879 | { | |
11880 | htab->section_pool.v1.indices = | |
11881 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11882 | /* It's harder to decide whether the section is too small in v1. | |
11883 | V1 is deprecated anyway so we punt. */ | |
11884 | } | |
d2854d8d | 11885 | else if (version == 2) |
73869dc2 DE |
11886 | { |
11887 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11888 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11889 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11890 | /* Reverse map for error checking. */ |
11891 | int ids_seen[DW_SECT_MAX + 1]; | |
11892 | int i; | |
11893 | ||
11894 | if (nr_columns < 2) | |
11895 | { | |
11896 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11897 | " in section table [in module %s]"), | |
11898 | dwp_file->name); | |
11899 | } | |
11900 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11901 | { | |
11902 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11903 | " in section table [in module %s]"), | |
11904 | dwp_file->name); | |
11905 | } | |
04fd5eed GB |
11906 | memset (ids, 255, sizeof_ids); |
11907 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11908 | for (i = 0; i < nr_columns; ++i) |
11909 | { | |
11910 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11911 | ||
11912 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11913 | { | |
11914 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11915 | " in section table [in module %s]"), | |
11916 | id, dwp_file->name); | |
11917 | } | |
11918 | if (ids_seen[id] != -1) | |
11919 | { | |
11920 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11921 | " id %d in section table [in module %s]"), | |
11922 | id, dwp_file->name); | |
11923 | } | |
11924 | ids_seen[id] = i; | |
11925 | ids[i] = id; | |
11926 | } | |
11927 | /* Must have exactly one info or types section. */ | |
11928 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11929 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11930 | != 1) | |
11931 | { | |
11932 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11933 | " DWO info/types section [in module %s]"), | |
11934 | dwp_file->name); | |
11935 | } | |
11936 | /* Must have an abbrev section. */ | |
11937 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11938 | { | |
11939 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11940 | " section [in module %s]"), | |
11941 | dwp_file->name); | |
11942 | } | |
11943 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11944 | htab->section_pool.v2.sizes = | |
11945 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11946 | * nr_units * nr_columns); | |
11947 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11948 | * nr_units * nr_columns)) | |
11949 | > index_end) | |
11950 | { | |
11951 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11952 | " [in module %s]"), | |
11953 | dwp_file->name); | |
11954 | } | |
11955 | } | |
d2854d8d CT |
11956 | else /* version == 5 */ |
11957 | { | |
11958 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11959 | int *ids = htab->section_pool.v5.section_ids; | |
11960 | size_t sizeof_ids = sizeof (htab->section_pool.v5.section_ids); | |
11961 | /* Reverse map for error checking. */ | |
11962 | int ids_seen[DW_SECT_MAX_V5 + 1]; | |
11963 | ||
11964 | if (nr_columns < 2) | |
11965 | { | |
11966 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11967 | " in section table [in module %s]"), | |
11968 | dwp_file->name); | |
11969 | } | |
11970 | if (nr_columns > MAX_NR_V5_DWO_SECTIONS) | |
11971 | { | |
11972 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11973 | " in section table [in module %s]"), | |
11974 | dwp_file->name); | |
11975 | } | |
11976 | memset (ids, 255, sizeof_ids); | |
11977 | memset (ids_seen, 255, sizeof (ids_seen)); | |
11978 | for (int i = 0; i < nr_columns; ++i) | |
11979 | { | |
11980 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11981 | ||
11982 | if (id < DW_SECT_MIN || id > DW_SECT_MAX_V5) | |
11983 | { | |
11984 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11985 | " in section table [in module %s]"), | |
11986 | id, dwp_file->name); | |
11987 | } | |
11988 | if (ids_seen[id] != -1) | |
11989 | { | |
11990 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11991 | " id %d in section table [in module %s]"), | |
11992 | id, dwp_file->name); | |
11993 | } | |
11994 | ids_seen[id] = i; | |
11995 | ids[i] = id; | |
11996 | } | |
11997 | /* Must have seen an info section. */ | |
11998 | if (ids_seen[DW_SECT_INFO_V5] == -1) | |
11999 | { | |
12000 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
12001 | " DWO info/types section [in module %s]"), | |
12002 | dwp_file->name); | |
12003 | } | |
12004 | /* Must have an abbrev section. */ | |
12005 | if (ids_seen[DW_SECT_ABBREV_V5] == -1) | |
12006 | { | |
12007 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
12008 | " section [in module %s]"), | |
12009 | dwp_file->name); | |
12010 | } | |
12011 | htab->section_pool.v5.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12012 | htab->section_pool.v5.sizes | |
12013 | = htab->section_pool.v5.offsets + (sizeof (uint32_t) | |
12014 | * nr_units * nr_columns); | |
12015 | if ((htab->section_pool.v5.sizes + (sizeof (uint32_t) | |
12016 | * nr_units * nr_columns)) | |
12017 | > index_end) | |
12018 | { | |
12019 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12020 | " [in module %s]"), | |
12021 | dwp_file->name); | |
12022 | } | |
12023 | } | |
80626a55 DE |
12024 | |
12025 | return htab; | |
12026 | } | |
12027 | ||
12028 | /* Update SECTIONS with the data from SECTP. | |
12029 | ||
5bb6e9dd TT |
12030 | This function is like the other "locate" section routines, but in |
12031 | this context the sections to read comes from the DWP V1 hash table, | |
12032 | not the full ELF section table. | |
80626a55 DE |
12033 | |
12034 | The result is non-zero for success, or zero if an error was found. */ | |
12035 | ||
12036 | static int | |
73869dc2 DE |
12037 | locate_v1_virtual_dwo_sections (asection *sectp, |
12038 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
12039 | { |
12040 | const struct dwop_section_names *names = &dwop_section_names; | |
12041 | ||
fbedd546 | 12042 | if (names->abbrev_dwo.matches (sectp->name)) |
80626a55 DE |
12043 | { |
12044 | /* There can be only one. */ | |
049412e3 | 12045 | if (sections->abbrev.s.section != NULL) |
80626a55 | 12046 | return 0; |
049412e3 | 12047 | sections->abbrev.s.section = sectp; |
fd361982 | 12048 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 | 12049 | } |
fbedd546 TT |
12050 | else if (names->info_dwo.matches (sectp->name) |
12051 | || names->types_dwo.matches (sectp->name)) | |
80626a55 DE |
12052 | { |
12053 | /* There can be only one. */ | |
049412e3 | 12054 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 12055 | return 0; |
049412e3 | 12056 | sections->info_or_types.s.section = sectp; |
fd361982 | 12057 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 | 12058 | } |
fbedd546 | 12059 | else if (names->line_dwo.matches (sectp->name)) |
80626a55 DE |
12060 | { |
12061 | /* There can be only one. */ | |
049412e3 | 12062 | if (sections->line.s.section != NULL) |
80626a55 | 12063 | return 0; |
049412e3 | 12064 | sections->line.s.section = sectp; |
fd361982 | 12065 | sections->line.size = bfd_section_size (sectp); |
80626a55 | 12066 | } |
fbedd546 | 12067 | else if (names->loc_dwo.matches (sectp->name)) |
80626a55 DE |
12068 | { |
12069 | /* There can be only one. */ | |
049412e3 | 12070 | if (sections->loc.s.section != NULL) |
80626a55 | 12071 | return 0; |
049412e3 | 12072 | sections->loc.s.section = sectp; |
fd361982 | 12073 | sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12074 | } |
fbedd546 | 12075 | else if (names->macinfo_dwo.matches (sectp->name)) |
80626a55 DE |
12076 | { |
12077 | /* There can be only one. */ | |
049412e3 | 12078 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12079 | return 0; |
049412e3 | 12080 | sections->macinfo.s.section = sectp; |
fd361982 | 12081 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 | 12082 | } |
fbedd546 | 12083 | else if (names->macro_dwo.matches (sectp->name)) |
80626a55 DE |
12084 | { |
12085 | /* There can be only one. */ | |
049412e3 | 12086 | if (sections->macro.s.section != NULL) |
80626a55 | 12087 | return 0; |
049412e3 | 12088 | sections->macro.s.section = sectp; |
fd361982 | 12089 | sections->macro.size = bfd_section_size (sectp); |
80626a55 | 12090 | } |
fbedd546 | 12091 | else if (names->str_offsets_dwo.matches (sectp->name)) |
80626a55 DE |
12092 | { |
12093 | /* There can be only one. */ | |
049412e3 | 12094 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12095 | return 0; |
049412e3 | 12096 | sections->str_offsets.s.section = sectp; |
fd361982 | 12097 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12098 | } |
12099 | else | |
12100 | { | |
12101 | /* No other kind of section is valid. */ | |
12102 | return 0; | |
12103 | } | |
12104 | ||
12105 | return 1; | |
12106 | } | |
12107 | ||
73869dc2 DE |
12108 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12109 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12110 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12111 | This is for DWP version 1 files. */ | |
80626a55 DE |
12112 | |
12113 | static struct dwo_unit * | |
976ca316 | 12114 | create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12115 | struct dwp_file *dwp_file, |
73869dc2 DE |
12116 | uint32_t unit_index, |
12117 | const char *comp_dir, | |
12118 | ULONGEST signature, int is_debug_types) | |
80626a55 | 12119 | { |
73869dc2 DE |
12120 | const struct dwp_hash_table *dwp_htab = |
12121 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12122 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
12123 | const char *kind = is_debug_types ? "TU" : "CU"; |
12124 | struct dwo_file *dwo_file; | |
12125 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12126 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12127 | void **dwo_file_slot; |
80626a55 DE |
12128 | int i; |
12129 | ||
73869dc2 DE |
12130 | gdb_assert (dwp_file->version == 1); |
12131 | ||
6f738b01 SM |
12132 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V1 file: %s", |
12133 | kind, pulongest (unit_index), hex_string (signature), | |
12134 | dwp_file->name); | |
80626a55 | 12135 | |
19ac8c2e | 12136 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12137 | Put a limit on the number of sections we look for so that bad data |
12138 | doesn't cause us to loop forever. */ | |
12139 | ||
73869dc2 | 12140 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12141 | (1 /* .debug_info or .debug_types */ \ |
12142 | + 1 /* .debug_abbrev */ \ | |
12143 | + 1 /* .debug_line */ \ | |
12144 | + 1 /* .debug_loc */ \ | |
12145 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12146 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12147 | + 1 /* trailing zero */) |
12148 | ||
12149 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12150 | |
73869dc2 | 12151 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12152 | { |
12153 | asection *sectp; | |
12154 | uint32_t section_nr = | |
12155 | read_4_bytes (dbfd, | |
73869dc2 DE |
12156 | dwp_htab->section_pool.v1.indices |
12157 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12158 | |
12159 | if (section_nr == 0) | |
12160 | break; | |
12161 | if (section_nr >= dwp_file->num_sections) | |
12162 | { | |
12163 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12164 | " [in module %s]"), | |
12165 | dwp_file->name); | |
12166 | } | |
12167 | ||
12168 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12169 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12170 | { |
12171 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12172 | " [in module %s]"), | |
12173 | dwp_file->name); | |
12174 | } | |
12175 | } | |
12176 | ||
12177 | if (i < 2 | |
96b79293 TT |
12178 | || sections.info_or_types.empty () |
12179 | || sections.abbrev.empty ()) | |
80626a55 DE |
12180 | { |
12181 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12182 | " [in module %s]"), | |
12183 | dwp_file->name); | |
12184 | } | |
73869dc2 | 12185 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12186 | { |
12187 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12188 | " [in module %s]"), | |
12189 | dwp_file->name); | |
12190 | } | |
12191 | ||
12192 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12193 | have dwo_unit "live" in that. At least for now. | |
12194 | ||
12195 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12196 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12197 | file, we can combine them back into a virtual DWO file to save space |
12198 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12199 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12200 | ||
791afaa2 TT |
12201 | std::string virtual_dwo_name = |
12202 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
12203 | sections.abbrev.get_id (), |
12204 | sections.line.get_id (), | |
12205 | sections.loc.get_id (), | |
12206 | sections.str_offsets.get_id ()); | |
80626a55 | 12207 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12208 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12209 | comp_dir); |
80626a55 DE |
12210 | /* Create one if necessary. */ |
12211 | if (*dwo_file_slot == NULL) | |
12212 | { | |
6f738b01 SM |
12213 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12214 | virtual_dwo_name.c_str ()); | |
12215 | ||
51ac9db5 | 12216 | dwo_file = new struct dwo_file; |
976ca316 | 12217 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
0ac5b59e | 12218 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12219 | dwo_file->sections.abbrev = sections.abbrev; |
12220 | dwo_file->sections.line = sections.line; | |
12221 | dwo_file->sections.loc = sections.loc; | |
12222 | dwo_file->sections.macinfo = sections.macinfo; | |
12223 | dwo_file->sections.macro = sections.macro; | |
12224 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12225 | /* The "str" section is global to the entire DWP file. */ | |
12226 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12227 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12228 | there's no need to record it in dwo_file. |
12229 | Also, we can't simply record type sections in dwo_file because | |
12230 | we record a pointer into the vector in dwo_unit. As we collect more | |
12231 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12232 | for it, invalidating all copies of pointers into the previous |
12233 | contents. */ | |
80626a55 DE |
12234 | *dwo_file_slot = dwo_file; |
12235 | } | |
12236 | else | |
12237 | { | |
6f738b01 SM |
12238 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12239 | virtual_dwo_name.c_str ()); | |
12240 | ||
9a3c8263 | 12241 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12242 | } |
80626a55 | 12243 | |
976ca316 | 12244 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
80626a55 DE |
12245 | dwo_unit->dwo_file = dwo_file; |
12246 | dwo_unit->signature = signature; | |
8d749320 | 12247 | dwo_unit->section = |
976ca316 | 12248 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
8a0459fd | 12249 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12250 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12251 | |
12252 | return dwo_unit; | |
12253 | } | |
12254 | ||
d2854d8d CT |
12255 | /* Subroutine of create_dwo_unit_in_dwp_v2 and create_dwo_unit_in_dwp_v5 to |
12256 | simplify them. Given a pointer to the containing section SECTION, and | |
12257 | OFFSET,SIZE of the piece within that section used by a TU/CU, return a | |
12258 | virtual section of just that piece. */ | |
73869dc2 DE |
12259 | |
12260 | static struct dwarf2_section_info | |
d2854d8d CT |
12261 | create_dwp_v2_or_v5_section (dwarf2_per_objfile *per_objfile, |
12262 | struct dwarf2_section_info *section, | |
12263 | bfd_size_type offset, bfd_size_type size) | |
73869dc2 DE |
12264 | { |
12265 | struct dwarf2_section_info result; | |
12266 | asection *sectp; | |
12267 | ||
12268 | gdb_assert (section != NULL); | |
12269 | gdb_assert (!section->is_virtual); | |
12270 | ||
12271 | memset (&result, 0, sizeof (result)); | |
12272 | result.s.containing_section = section; | |
dc4ccb6f | 12273 | result.is_virtual = true; |
73869dc2 DE |
12274 | |
12275 | if (size == 0) | |
12276 | return result; | |
12277 | ||
96b79293 | 12278 | sectp = section->get_bfd_section (); |
73869dc2 DE |
12279 | |
12280 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12281 | bounds of the real section. This is a pretty-rare event, so just | |
12282 | flag an error (easier) instead of a warning and trying to cope. */ | |
12283 | if (sectp == NULL | |
fd361982 | 12284 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 12285 | { |
d2854d8d | 12286 | error (_("Dwarf Error: Bad DWP V2 or V5 section info, doesn't fit" |
73869dc2 | 12287 | " in section %s [in module %s]"), |
fd361982 | 12288 | sectp ? bfd_section_name (sectp) : "<unknown>", |
976ca316 | 12289 | objfile_name (per_objfile->objfile)); |
73869dc2 DE |
12290 | } |
12291 | ||
12292 | result.virtual_offset = offset; | |
12293 | result.size = size; | |
12294 | return result; | |
12295 | } | |
12296 | ||
12297 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12298 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12299 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12300 | This is for DWP version 2 files. */ | |
12301 | ||
12302 | static struct dwo_unit * | |
976ca316 | 12303 | create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12304 | struct dwp_file *dwp_file, |
73869dc2 DE |
12305 | uint32_t unit_index, |
12306 | const char *comp_dir, | |
12307 | ULONGEST signature, int is_debug_types) | |
12308 | { | |
73869dc2 DE |
12309 | const struct dwp_hash_table *dwp_htab = |
12310 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12311 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12312 | const char *kind = is_debug_types ? "TU" : "CU"; |
12313 | struct dwo_file *dwo_file; | |
12314 | struct dwo_unit *dwo_unit; | |
d2854d8d | 12315 | struct virtual_v2_or_v5_dwo_sections sections; |
73869dc2 | 12316 | void **dwo_file_slot; |
73869dc2 DE |
12317 | int i; |
12318 | ||
12319 | gdb_assert (dwp_file->version == 2); | |
12320 | ||
6f738b01 SM |
12321 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V2 file: %s", |
12322 | kind, pulongest (unit_index), hex_string (signature), | |
12323 | dwp_file->name); | |
73869dc2 DE |
12324 | |
12325 | /* Fetch the section offsets of this DWO unit. */ | |
12326 | ||
12327 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12328 | |
12329 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12330 | { | |
12331 | uint32_t offset = read_4_bytes (dbfd, | |
12332 | dwp_htab->section_pool.v2.offsets | |
12333 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12334 | + i) | |
12335 | * sizeof (uint32_t))); | |
12336 | uint32_t size = read_4_bytes (dbfd, | |
12337 | dwp_htab->section_pool.v2.sizes | |
12338 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12339 | + i) | |
12340 | * sizeof (uint32_t))); | |
12341 | ||
12342 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12343 | { | |
12344 | case DW_SECT_INFO: | |
12345 | case DW_SECT_TYPES: | |
12346 | sections.info_or_types_offset = offset; | |
12347 | sections.info_or_types_size = size; | |
12348 | break; | |
12349 | case DW_SECT_ABBREV: | |
12350 | sections.abbrev_offset = offset; | |
12351 | sections.abbrev_size = size; | |
12352 | break; | |
12353 | case DW_SECT_LINE: | |
12354 | sections.line_offset = offset; | |
12355 | sections.line_size = size; | |
12356 | break; | |
12357 | case DW_SECT_LOC: | |
12358 | sections.loc_offset = offset; | |
12359 | sections.loc_size = size; | |
12360 | break; | |
12361 | case DW_SECT_STR_OFFSETS: | |
12362 | sections.str_offsets_offset = offset; | |
12363 | sections.str_offsets_size = size; | |
12364 | break; | |
12365 | case DW_SECT_MACINFO: | |
12366 | sections.macinfo_offset = offset; | |
12367 | sections.macinfo_size = size; | |
12368 | break; | |
12369 | case DW_SECT_MACRO: | |
12370 | sections.macro_offset = offset; | |
12371 | sections.macro_size = size; | |
12372 | break; | |
12373 | } | |
12374 | } | |
12375 | ||
12376 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12377 | have dwo_unit "live" in that. At least for now. | |
12378 | ||
12379 | The DWP file can be made up of a random collection of CUs and TUs. | |
12380 | However, for each CU + set of TUs that came from the same original DWO | |
12381 | file, we can combine them back into a virtual DWO file to save space | |
12382 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12383 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12384 | ||
791afaa2 TT |
12385 | std::string virtual_dwo_name = |
12386 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12387 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12388 | (long) (sections.line_size ? sections.line_offset : 0), | |
12389 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12390 | (long) (sections.str_offsets_size | |
12391 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12392 | /* Can we use an existing virtual DWO file? */ |
976ca316 | 12393 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, virtual_dwo_name.c_str (), |
ed2dc618 | 12394 | comp_dir); |
73869dc2 DE |
12395 | /* Create one if necessary. */ |
12396 | if (*dwo_file_slot == NULL) | |
12397 | { | |
6f738b01 SM |
12398 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12399 | virtual_dwo_name.c_str ()); | |
12400 | ||
51ac9db5 | 12401 | dwo_file = new struct dwo_file; |
976ca316 | 12402 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); |
73869dc2 DE |
12403 | dwo_file->comp_dir = comp_dir; |
12404 | dwo_file->sections.abbrev = | |
d2854d8d CT |
12405 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.abbrev, |
12406 | sections.abbrev_offset, | |
12407 | sections.abbrev_size); | |
73869dc2 | 12408 | dwo_file->sections.line = |
d2854d8d CT |
12409 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.line, |
12410 | sections.line_offset, | |
12411 | sections.line_size); | |
73869dc2 | 12412 | dwo_file->sections.loc = |
d2854d8d CT |
12413 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.loc, |
12414 | sections.loc_offset, sections.loc_size); | |
73869dc2 | 12415 | dwo_file->sections.macinfo = |
d2854d8d CT |
12416 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macinfo, |
12417 | sections.macinfo_offset, | |
12418 | sections.macinfo_size); | |
73869dc2 | 12419 | dwo_file->sections.macro = |
d2854d8d CT |
12420 | create_dwp_v2_or_v5_section (per_objfile, &dwp_file->sections.macro, |
12421 | sections.macro_offset, | |
12422 | sections.macro_size); | |
73869dc2 | 12423 | dwo_file->sections.str_offsets = |
d2854d8d CT |
12424 | create_dwp_v2_or_v5_section (per_objfile, |
12425 | &dwp_file->sections.str_offsets, | |
12426 | sections.str_offsets_offset, | |
12427 | sections.str_offsets_size); | |
73869dc2 DE |
12428 | /* The "str" section is global to the entire DWP file. */ |
12429 | dwo_file->sections.str = dwp_file->sections.str; | |
12430 | /* The info or types section is assigned below to dwo_unit, | |
12431 | there's no need to record it in dwo_file. | |
12432 | Also, we can't simply record type sections in dwo_file because | |
12433 | we record a pointer into the vector in dwo_unit. As we collect more | |
12434 | types we'll grow the vector and eventually have to reallocate space | |
12435 | for it, invalidating all copies of pointers into the previous | |
12436 | contents. */ | |
12437 | *dwo_file_slot = dwo_file; | |
12438 | } | |
12439 | else | |
12440 | { | |
6f738b01 SM |
12441 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12442 | virtual_dwo_name.c_str ()); | |
12443 | ||
9a3c8263 | 12444 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12445 | } |
73869dc2 | 12446 | |
976ca316 | 12447 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); |
73869dc2 DE |
12448 | dwo_unit->dwo_file = dwo_file; |
12449 | dwo_unit->signature = signature; | |
8d749320 | 12450 | dwo_unit->section = |
976ca316 | 12451 | XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
d2854d8d | 12452 | *dwo_unit->section = create_dwp_v2_or_v5_section |
dda83cd7 | 12453 | (per_objfile, |
d2854d8d CT |
12454 | is_debug_types |
12455 | ? &dwp_file->sections.types | |
12456 | : &dwp_file->sections.info, | |
12457 | sections.info_or_types_offset, | |
12458 | sections.info_or_types_size); | |
12459 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12460 | ||
12461 | return dwo_unit; | |
12462 | } | |
12463 | ||
12464 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12465 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12466 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12467 | This is for DWP version 5 files. */ | |
12468 | ||
12469 | static struct dwo_unit * | |
12470 | create_dwo_unit_in_dwp_v5 (dwarf2_per_objfile *per_objfile, | |
12471 | struct dwp_file *dwp_file, | |
12472 | uint32_t unit_index, | |
12473 | const char *comp_dir, | |
12474 | ULONGEST signature, int is_debug_types) | |
12475 | { | |
12476 | const struct dwp_hash_table *dwp_htab | |
12477 | = is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12478 | bfd *dbfd = dwp_file->dbfd.get (); | |
12479 | const char *kind = is_debug_types ? "TU" : "CU"; | |
12480 | struct dwo_file *dwo_file; | |
12481 | struct dwo_unit *dwo_unit; | |
12482 | struct virtual_v2_or_v5_dwo_sections sections {}; | |
12483 | void **dwo_file_slot; | |
12484 | ||
12485 | gdb_assert (dwp_file->version == 5); | |
12486 | ||
6f738b01 SM |
12487 | dwarf_read_debug_printf ("Reading %s %s/%s in DWP V5 file: %s", |
12488 | kind, pulongest (unit_index), hex_string (signature), | |
12489 | dwp_file->name); | |
d2854d8d CT |
12490 | |
12491 | /* Fetch the section offsets of this DWO unit. */ | |
12492 | ||
12493 | /* memset (§ions, 0, sizeof (sections)); */ | |
12494 | ||
12495 | for (int i = 0; i < dwp_htab->nr_columns; ++i) | |
12496 | { | |
12497 | uint32_t offset = read_4_bytes (dbfd, | |
dda83cd7 SM |
12498 | dwp_htab->section_pool.v5.offsets |
12499 | + (((unit_index - 1) | |
12500 | * dwp_htab->nr_columns | |
12501 | + i) | |
12502 | * sizeof (uint32_t))); | |
d2854d8d | 12503 | uint32_t size = read_4_bytes (dbfd, |
dda83cd7 SM |
12504 | dwp_htab->section_pool.v5.sizes |
12505 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12506 | + i) | |
12507 | * sizeof (uint32_t))); | |
d2854d8d CT |
12508 | |
12509 | switch (dwp_htab->section_pool.v5.section_ids[i]) | |
dda83cd7 SM |
12510 | { |
12511 | case DW_SECT_ABBREV_V5: | |
12512 | sections.abbrev_offset = offset; | |
12513 | sections.abbrev_size = size; | |
12514 | break; | |
12515 | case DW_SECT_INFO_V5: | |
12516 | sections.info_or_types_offset = offset; | |
12517 | sections.info_or_types_size = size; | |
12518 | break; | |
12519 | case DW_SECT_LINE_V5: | |
12520 | sections.line_offset = offset; | |
12521 | sections.line_size = size; | |
12522 | break; | |
12523 | case DW_SECT_LOCLISTS_V5: | |
12524 | sections.loclists_offset = offset; | |
12525 | sections.loclists_size = size; | |
12526 | break; | |
12527 | case DW_SECT_MACRO_V5: | |
12528 | sections.macro_offset = offset; | |
12529 | sections.macro_size = size; | |
12530 | break; | |
12531 | case DW_SECT_RNGLISTS_V5: | |
12532 | sections.rnglists_offset = offset; | |
12533 | sections.rnglists_size = size; | |
12534 | break; | |
12535 | case DW_SECT_STR_OFFSETS_V5: | |
12536 | sections.str_offsets_offset = offset; | |
12537 | sections.str_offsets_size = size; | |
12538 | break; | |
12539 | case DW_SECT_RESERVED_V5: | |
12540 | default: | |
12541 | break; | |
12542 | } | |
d2854d8d CT |
12543 | } |
12544 | ||
12545 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12546 | have dwo_unit "live" in that. At least for now. | |
12547 | ||
12548 | The DWP file can be made up of a random collection of CUs and TUs. | |
12549 | However, for each CU + set of TUs that came from the same original DWO | |
12550 | file, we can combine them back into a virtual DWO file to save space | |
12551 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12552 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12553 | ||
12554 | std::string virtual_dwo_name = | |
12555 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld-%ld-%ld", | |
dda83cd7 SM |
12556 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), |
12557 | (long) (sections.line_size ? sections.line_offset : 0), | |
12558 | (long) (sections.loclists_size ? sections.loclists_offset : 0), | |
12559 | (long) (sections.str_offsets_size | |
12560 | ? sections.str_offsets_offset : 0), | |
12561 | (long) (sections.macro_size ? sections.macro_offset : 0), | |
12562 | (long) (sections.rnglists_size ? sections.rnglists_offset: 0)); | |
d2854d8d CT |
12563 | /* Can we use an existing virtual DWO file? */ |
12564 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, | |
dda83cd7 SM |
12565 | virtual_dwo_name.c_str (), |
12566 | comp_dir); | |
d2854d8d CT |
12567 | /* Create one if necessary. */ |
12568 | if (*dwo_file_slot == NULL) | |
12569 | { | |
6f738b01 SM |
12570 | dwarf_read_debug_printf ("Creating virtual DWO: %s", |
12571 | virtual_dwo_name.c_str ()); | |
12572 | ||
d2854d8d CT |
12573 | dwo_file = new struct dwo_file; |
12574 | dwo_file->dwo_name = per_objfile->objfile->intern (virtual_dwo_name); | |
12575 | dwo_file->comp_dir = comp_dir; | |
12576 | dwo_file->sections.abbrev = | |
dda83cd7 SM |
12577 | create_dwp_v2_or_v5_section (per_objfile, |
12578 | &dwp_file->sections.abbrev, | |
12579 | sections.abbrev_offset, | |
12580 | sections.abbrev_size); | |
d2854d8d | 12581 | dwo_file->sections.line = |
dda83cd7 SM |
12582 | create_dwp_v2_or_v5_section (per_objfile, |
12583 | &dwp_file->sections.line, | |
12584 | sections.line_offset, sections.line_size); | |
d2854d8d | 12585 | dwo_file->sections.macro = |
dda83cd7 SM |
12586 | create_dwp_v2_or_v5_section (per_objfile, |
12587 | &dwp_file->sections.macro, | |
12588 | sections.macro_offset, | |
12589 | sections.macro_size); | |
d2854d8d | 12590 | dwo_file->sections.loclists = |
dda83cd7 SM |
12591 | create_dwp_v2_or_v5_section (per_objfile, |
12592 | &dwp_file->sections.loclists, | |
12593 | sections.loclists_offset, | |
12594 | sections.loclists_size); | |
d2854d8d | 12595 | dwo_file->sections.rnglists = |
dda83cd7 SM |
12596 | create_dwp_v2_or_v5_section (per_objfile, |
12597 | &dwp_file->sections.rnglists, | |
12598 | sections.rnglists_offset, | |
12599 | sections.rnglists_size); | |
d2854d8d | 12600 | dwo_file->sections.str_offsets = |
dda83cd7 SM |
12601 | create_dwp_v2_or_v5_section (per_objfile, |
12602 | &dwp_file->sections.str_offsets, | |
12603 | sections.str_offsets_offset, | |
12604 | sections.str_offsets_size); | |
d2854d8d CT |
12605 | /* The "str" section is global to the entire DWP file. */ |
12606 | dwo_file->sections.str = dwp_file->sections.str; | |
12607 | /* The info or types section is assigned below to dwo_unit, | |
dda83cd7 SM |
12608 | there's no need to record it in dwo_file. |
12609 | Also, we can't simply record type sections in dwo_file because | |
12610 | we record a pointer into the vector in dwo_unit. As we collect more | |
12611 | types we'll grow the vector and eventually have to reallocate space | |
12612 | for it, invalidating all copies of pointers into the previous | |
12613 | contents. */ | |
d2854d8d CT |
12614 | *dwo_file_slot = dwo_file; |
12615 | } | |
12616 | else | |
12617 | { | |
6f738b01 SM |
12618 | dwarf_read_debug_printf ("Using existing virtual DWO: %s", |
12619 | virtual_dwo_name.c_str ()); | |
12620 | ||
d2854d8d CT |
12621 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
12622 | } | |
12623 | ||
12624 | dwo_unit = OBSTACK_ZALLOC (&per_objfile->per_bfd->obstack, struct dwo_unit); | |
12625 | dwo_unit->dwo_file = dwo_file; | |
12626 | dwo_unit->signature = signature; | |
12627 | dwo_unit->section | |
12628 | = XOBNEW (&per_objfile->per_bfd->obstack, struct dwarf2_section_info); | |
12629 | *dwo_unit->section = create_dwp_v2_or_v5_section (per_objfile, | |
dda83cd7 SM |
12630 | &dwp_file->sections.info, |
12631 | sections.info_or_types_offset, | |
12632 | sections.info_or_types_size); | |
73869dc2 DE |
12633 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
12634 | ||
12635 | return dwo_unit; | |
12636 | } | |
12637 | ||
57d63ce2 DE |
12638 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12639 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12640 | |
12641 | static struct dwo_unit * | |
976ca316 | 12642 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12643 | struct dwp_file *dwp_file, const char *comp_dir, |
57d63ce2 | 12644 | ULONGEST signature, int is_debug_types) |
80626a55 | 12645 | { |
57d63ce2 DE |
12646 | const struct dwp_hash_table *dwp_htab = |
12647 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12648 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12649 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12650 | uint32_t hash = signature & mask; |
12651 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12652 | unsigned int i; | |
12653 | void **slot; | |
870f88f7 | 12654 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12655 | |
12656 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12657 | find_dwo_cu.signature = signature; | |
19ac8c2e | 12658 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
12659 | ? dwp_file->loaded_tus.get () |
12660 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 12661 | &find_dwo_cu, INSERT); |
80626a55 DE |
12662 | |
12663 | if (*slot != NULL) | |
9a3c8263 | 12664 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12665 | |
12666 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12667 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12668 | { |
12669 | ULONGEST signature_in_table; | |
12670 | ||
12671 | signature_in_table = | |
57d63ce2 | 12672 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12673 | if (signature_in_table == signature) |
12674 | { | |
57d63ce2 DE |
12675 | uint32_t unit_index = |
12676 | read_4_bytes (dbfd, | |
12677 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12678 | |
73869dc2 DE |
12679 | if (dwp_file->version == 1) |
12680 | { | |
976ca316 SM |
12681 | *slot = create_dwo_unit_in_dwp_v1 (per_objfile, dwp_file, |
12682 | unit_index, comp_dir, | |
12683 | signature, is_debug_types); | |
73869dc2 | 12684 | } |
d2854d8d | 12685 | else if (dwp_file->version == 2) |
73869dc2 | 12686 | { |
976ca316 SM |
12687 | *slot = create_dwo_unit_in_dwp_v2 (per_objfile, dwp_file, |
12688 | unit_index, comp_dir, | |
12689 | signature, is_debug_types); | |
73869dc2 | 12690 | } |
d2854d8d CT |
12691 | else /* version == 5 */ |
12692 | { | |
12693 | *slot = create_dwo_unit_in_dwp_v5 (per_objfile, dwp_file, | |
12694 | unit_index, comp_dir, | |
12695 | signature, is_debug_types); | |
12696 | } | |
9a3c8263 | 12697 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12698 | } |
12699 | if (signature_in_table == 0) | |
12700 | return NULL; | |
12701 | hash = (hash + hash2) & mask; | |
12702 | } | |
12703 | ||
12704 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12705 | " [in module %s]"), | |
12706 | dwp_file->name); | |
12707 | } | |
12708 | ||
ab5088bf | 12709 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12710 | Open the file specified by FILE_NAME and hand it off to BFD for |
12711 | preliminary analysis. Return a newly initialized bfd *, which | |
12712 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12713 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12714 | SEARCH_CWD is true if the current directory is to be searched. |
12715 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12716 | If successful, the file is added to the bfd include table of the |
12717 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12718 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12719 | NOTE: This function is derived from symfile_bfd_open. */ |
12720 | ||
192b62ce | 12721 | static gdb_bfd_ref_ptr |
976ca316 | 12722 | try_open_dwop_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12723 | const char *file_name, int is_dwp, int search_cwd) |
3019eac3 | 12724 | { |
24b9144d | 12725 | int desc; |
9c02c129 DE |
12726 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12727 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12728 | to debug_file_directory. */ | |
e0cc99a6 | 12729 | const char *search_path; |
9c02c129 DE |
12730 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12731 | ||
e0cc99a6 | 12732 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12733 | if (search_cwd) |
12734 | { | |
12735 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12736 | { |
12737 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12738 | debug_file_directory, | |
12739 | (char *) NULL)); | |
12740 | search_path = search_path_holder.get (); | |
12741 | } | |
6ac97d4c | 12742 | else |
e0cc99a6 | 12743 | search_path = "."; |
6ac97d4c | 12744 | } |
9c02c129 | 12745 | else |
e0cc99a6 | 12746 | search_path = debug_file_directory; |
3019eac3 | 12747 | |
24b9144d | 12748 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12749 | if (is_dwp) |
12750 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12751 | |
12752 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12753 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12754 | O_RDONLY | O_BINARY, &absolute_name); |
12755 | if (desc < 0) | |
12756 | return NULL; | |
12757 | ||
e0cc99a6 TT |
12758 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12759 | gnutarget, desc)); | |
9c02c129 DE |
12760 | if (sym_bfd == NULL) |
12761 | return NULL; | |
192b62ce | 12762 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12763 | |
192b62ce TT |
12764 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12765 | return NULL; | |
3019eac3 | 12766 | |
13aaf454 DE |
12767 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12768 | This is important because things like demangled_names_hash lives in the | |
12769 | objfile's per_bfd space and may have references to things like symbol | |
12770 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
976ca316 | 12771 | gdb_bfd_record_inclusion (per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12772 | |
3019eac3 DE |
12773 | return sym_bfd; |
12774 | } | |
12775 | ||
ab5088bf | 12776 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12777 | COMP_DIR is the DW_AT_comp_dir attribute. |
12778 | The result is the bfd handle of the file. | |
12779 | If there is a problem finding or opening the file, return NULL. | |
12780 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12781 | same as symfile_bfd_open. */ | |
12782 | ||
192b62ce | 12783 | static gdb_bfd_ref_ptr |
976ca316 | 12784 | open_dwo_file (dwarf2_per_objfile *per_objfile, |
ed2dc618 | 12785 | const char *file_name, const char *comp_dir) |
3019eac3 | 12786 | { |
80626a55 | 12787 | if (IS_ABSOLUTE_PATH (file_name)) |
976ca316 | 12788 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12789 | 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
12790 | |
12791 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12792 | ||
12793 | if (comp_dir != NULL) | |
12794 | { | |
43816ebc TT |
12795 | gdb::unique_xmalloc_ptr<char> path_to_try |
12796 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12797 | |
12798 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12799 | search path, which seems useful. */ | |
976ca316 | 12800 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, path_to_try.get (), |
ed2dc618 | 12801 | 0 /*is_dwp*/, |
192b62ce | 12802 | 1 /*search_cwd*/)); |
3019eac3 DE |
12803 | if (abfd != NULL) |
12804 | return abfd; | |
12805 | } | |
12806 | ||
12807 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12808 | is a list of paths. */ | |
12809 | ||
12810 | if (*debug_file_directory == '\0') | |
12811 | return NULL; | |
12812 | ||
976ca316 | 12813 | return try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 12814 | 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
12815 | } |
12816 | ||
80626a55 DE |
12817 | /* This function is mapped across the sections and remembers the offset and |
12818 | size of each of the DWO debugging sections we are interested in. */ | |
12819 | ||
12820 | static void | |
5bb6e9dd TT |
12821 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, |
12822 | dwo_sections *dwo_sections) | |
80626a55 | 12823 | { |
80626a55 DE |
12824 | const struct dwop_section_names *names = &dwop_section_names; |
12825 | ||
fbedd546 | 12826 | if (names->abbrev_dwo.matches (sectp->name)) |
80626a55 | 12827 | { |
049412e3 | 12828 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12829 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 | 12830 | } |
fbedd546 | 12831 | else if (names->info_dwo.matches (sectp->name)) |
80626a55 | 12832 | { |
049412e3 | 12833 | dwo_sections->info.s.section = sectp; |
fd361982 | 12834 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 | 12835 | } |
fbedd546 | 12836 | else if (names->line_dwo.matches (sectp->name)) |
80626a55 | 12837 | { |
049412e3 | 12838 | dwo_sections->line.s.section = sectp; |
fd361982 | 12839 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 | 12840 | } |
fbedd546 | 12841 | else if (names->loc_dwo.matches (sectp->name)) |
80626a55 | 12842 | { |
049412e3 | 12843 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12844 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12845 | } |
fbedd546 | 12846 | else if (names->loclists_dwo.matches (sectp->name)) |
41144253 | 12847 | { |
12848 | dwo_sections->loclists.s.section = sectp; | |
12849 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12850 | } | |
fbedd546 | 12851 | else if (names->macinfo_dwo.matches (sectp->name)) |
80626a55 | 12852 | { |
049412e3 | 12853 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12854 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 | 12855 | } |
fbedd546 | 12856 | else if (names->macro_dwo.matches (sectp->name)) |
80626a55 | 12857 | { |
049412e3 | 12858 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12859 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 | 12860 | } |
fbedd546 | 12861 | else if (names->rnglists_dwo.matches (sectp->name)) |
d0ce17d8 CT |
12862 | { |
12863 | dwo_sections->rnglists.s.section = sectp; | |
12864 | dwo_sections->rnglists.size = bfd_section_size (sectp); | |
12865 | } | |
fbedd546 | 12866 | else if (names->str_dwo.matches (sectp->name)) |
80626a55 | 12867 | { |
049412e3 | 12868 | dwo_sections->str.s.section = sectp; |
fd361982 | 12869 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 | 12870 | } |
fbedd546 | 12871 | else if (names->str_offsets_dwo.matches (sectp->name)) |
80626a55 | 12872 | { |
049412e3 | 12873 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12874 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 | 12875 | } |
fbedd546 | 12876 | else if (names->types_dwo.matches (sectp->name)) |
80626a55 DE |
12877 | { |
12878 | struct dwarf2_section_info type_section; | |
12879 | ||
12880 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12881 | type_section.s.section = sectp; |
fd361982 | 12882 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12883 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12884 | } |
12885 | } | |
12886 | ||
ab5088bf | 12887 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12888 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12889 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12890 | |
12891 | static struct dwo_file * | |
4ab09049 SM |
12892 | open_and_init_dwo_file (dwarf2_cu *cu, const char *dwo_name, |
12893 | const char *comp_dir) | |
3019eac3 | 12894 | { |
976ca316 | 12895 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 12896 | |
976ca316 | 12897 | gdb_bfd_ref_ptr dbfd = open_dwo_file (per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12898 | if (dbfd == NULL) |
12899 | { | |
6f738b01 SM |
12900 | dwarf_read_debug_printf ("DWO file not found: %s", dwo_name); |
12901 | ||
80626a55 DE |
12902 | return NULL; |
12903 | } | |
263db9a1 | 12904 | |
51ac9db5 | 12905 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12906 | dwo_file->dwo_name = dwo_name; |
12907 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12908 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12909 | |
5bb6e9dd TT |
12910 | for (asection *sec : gdb_bfd_sections (dwo_file->dbfd)) |
12911 | dwarf2_locate_dwo_sections (dwo_file->dbfd.get (), sec, | |
12912 | &dwo_file->sections); | |
3019eac3 | 12913 | |
976ca316 SM |
12914 | create_cus_hash_table (per_objfile, cu, *dwo_file, dwo_file->sections.info, |
12915 | dwo_file->cus); | |
3019eac3 | 12916 | |
d2854d8d CT |
12917 | if (cu->per_cu->dwarf_version < 5) |
12918 | { | |
12919 | create_debug_types_hash_table (per_objfile, dwo_file.get (), | |
12920 | dwo_file->sections.types, dwo_file->tus); | |
12921 | } | |
12922 | else | |
12923 | { | |
12924 | create_debug_type_hash_table (per_objfile, dwo_file.get (), | |
12925 | &dwo_file->sections.info, dwo_file->tus, | |
30c80d88 | 12926 | rcuh_kind::COMPILE); |
d2854d8d | 12927 | } |
3019eac3 | 12928 | |
6f738b01 | 12929 | dwarf_read_debug_printf ("DWO file found: %s", dwo_name); |
80626a55 | 12930 | |
263db9a1 | 12931 | return dwo_file.release (); |
3019eac3 DE |
12932 | } |
12933 | ||
80626a55 | 12934 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12935 | size of each of the DWP debugging sections common to version 1 and 2 that |
12936 | we are interested in. */ | |
3019eac3 | 12937 | |
80626a55 | 12938 | static void |
73869dc2 | 12939 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
5bb6e9dd | 12940 | dwp_file *dwp_file) |
3019eac3 | 12941 | { |
80626a55 DE |
12942 | const struct dwop_section_names *names = &dwop_section_names; |
12943 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12944 | |
80626a55 | 12945 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12946 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12947 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12948 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12949 | |
80626a55 | 12950 | /* Look for specific sections that we need. */ |
fbedd546 | 12951 | if (names->str_dwo.matches (sectp->name)) |
80626a55 | 12952 | { |
049412e3 | 12953 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12954 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 | 12955 | } |
fbedd546 | 12956 | else if (names->cu_index.matches (sectp->name)) |
80626a55 | 12957 | { |
049412e3 | 12958 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12959 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 | 12960 | } |
fbedd546 | 12961 | else if (names->tu_index.matches (sectp->name)) |
80626a55 | 12962 | { |
049412e3 | 12963 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12964 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12965 | } |
12966 | } | |
3019eac3 | 12967 | |
73869dc2 DE |
12968 | /* This function is mapped across the sections and remembers the offset and |
12969 | size of each of the DWP version 2 debugging sections that we are interested | |
12970 | in. This is split into a separate function because we don't know if we | |
d2854d8d | 12971 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ |
73869dc2 DE |
12972 | |
12973 | static void | |
12974 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12975 | { | |
9a3c8263 | 12976 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12977 | const struct dwop_section_names *names = &dwop_section_names; |
12978 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12979 | ||
12980 | /* Record the ELF section number for later lookup: this is what the | |
12981 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12982 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12983 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12984 | ||
12985 | /* Look for specific sections that we need. */ | |
fbedd546 | 12986 | if (names->abbrev_dwo.matches (sectp->name)) |
73869dc2 | 12987 | { |
049412e3 | 12988 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12989 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 | 12990 | } |
fbedd546 | 12991 | else if (names->info_dwo.matches (sectp->name)) |
73869dc2 | 12992 | { |
049412e3 | 12993 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12994 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 | 12995 | } |
fbedd546 | 12996 | else if (names->line_dwo.matches (sectp->name)) |
73869dc2 | 12997 | { |
049412e3 | 12998 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12999 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 | 13000 | } |
fbedd546 | 13001 | else if (names->loc_dwo.matches (sectp->name)) |
73869dc2 | 13002 | { |
049412e3 | 13003 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 13004 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 | 13005 | } |
fbedd546 | 13006 | else if (names->macinfo_dwo.matches (sectp->name)) |
73869dc2 | 13007 | { |
049412e3 | 13008 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 13009 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 | 13010 | } |
fbedd546 | 13011 | else if (names->macro_dwo.matches (sectp->name)) |
73869dc2 | 13012 | { |
049412e3 | 13013 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 13014 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 | 13015 | } |
fbedd546 | 13016 | else if (names->str_offsets_dwo.matches (sectp->name)) |
73869dc2 | 13017 | { |
049412e3 | 13018 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 13019 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 | 13020 | } |
fbedd546 | 13021 | else if (names->types_dwo.matches (sectp->name)) |
73869dc2 | 13022 | { |
049412e3 | 13023 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 13024 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
13025 | } |
13026 | } | |
13027 | ||
d2854d8d CT |
13028 | /* This function is mapped across the sections and remembers the offset and |
13029 | size of each of the DWP version 5 debugging sections that we are interested | |
13030 | in. This is split into a separate function because we don't know if we | |
13031 | have version 1 or 2 or 5 until we parse the cu_index/tu_index sections. */ | |
13032 | ||
13033 | static void | |
13034 | dwarf2_locate_v5_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
13035 | { | |
13036 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; | |
13037 | const struct dwop_section_names *names = &dwop_section_names; | |
13038 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
13039 | ||
13040 | /* Record the ELF section number for later lookup: this is what the | |
13041 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
13042 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
13043 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
13044 | ||
13045 | /* Look for specific sections that we need. */ | |
fbedd546 | 13046 | if (names->abbrev_dwo.matches (sectp->name)) |
d2854d8d CT |
13047 | { |
13048 | dwp_file->sections.abbrev.s.section = sectp; | |
13049 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); | |
13050 | } | |
fbedd546 | 13051 | else if (names->info_dwo.matches (sectp->name)) |
d2854d8d CT |
13052 | { |
13053 | dwp_file->sections.info.s.section = sectp; | |
13054 | dwp_file->sections.info.size = bfd_section_size (sectp); | |
13055 | } | |
fbedd546 | 13056 | else if (names->line_dwo.matches (sectp->name)) |
d2854d8d CT |
13057 | { |
13058 | dwp_file->sections.line.s.section = sectp; | |
13059 | dwp_file->sections.line.size = bfd_section_size (sectp); | |
13060 | } | |
fbedd546 | 13061 | else if (names->loclists_dwo.matches (sectp->name)) |
d2854d8d CT |
13062 | { |
13063 | dwp_file->sections.loclists.s.section = sectp; | |
13064 | dwp_file->sections.loclists.size = bfd_section_size (sectp); | |
13065 | } | |
fbedd546 | 13066 | else if (names->macro_dwo.matches (sectp->name)) |
d2854d8d CT |
13067 | { |
13068 | dwp_file->sections.macro.s.section = sectp; | |
13069 | dwp_file->sections.macro.size = bfd_section_size (sectp); | |
13070 | } | |
fbedd546 | 13071 | else if (names->rnglists_dwo.matches (sectp->name)) |
d2854d8d CT |
13072 | { |
13073 | dwp_file->sections.rnglists.s.section = sectp; | |
13074 | dwp_file->sections.rnglists.size = bfd_section_size (sectp); | |
13075 | } | |
fbedd546 | 13076 | else if (names->str_offsets_dwo.matches (sectp->name)) |
d2854d8d CT |
13077 | { |
13078 | dwp_file->sections.str_offsets.s.section = sectp; | |
13079 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); | |
13080 | } | |
13081 | } | |
13082 | ||
80626a55 | 13083 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13084 | |
80626a55 DE |
13085 | static hashval_t |
13086 | hash_dwp_loaded_cutus (const void *item) | |
13087 | { | |
9a3c8263 | 13088 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13089 | |
80626a55 DE |
13090 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13091 | return dwo_unit->signature; | |
3019eac3 DE |
13092 | } |
13093 | ||
80626a55 | 13094 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13095 | |
80626a55 DE |
13096 | static int |
13097 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13098 | { |
9a3c8263 SM |
13099 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13100 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13101 | |
80626a55 DE |
13102 | return dua->signature == dub->signature; |
13103 | } | |
3019eac3 | 13104 | |
80626a55 | 13105 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13106 | |
48b490f2 | 13107 | static htab_up |
298e9637 | 13108 | allocate_dwp_loaded_cutus_table () |
80626a55 | 13109 | { |
48b490f2 TT |
13110 | return htab_up (htab_create_alloc (3, |
13111 | hash_dwp_loaded_cutus, | |
13112 | eq_dwp_loaded_cutus, | |
13113 | NULL, xcalloc, xfree)); | |
80626a55 | 13114 | } |
3019eac3 | 13115 | |
ab5088bf DE |
13116 | /* Try to open DWP file FILE_NAME. |
13117 | The result is the bfd handle of the file. | |
13118 | If there is a problem finding or opening the file, return NULL. | |
13119 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13120 | same as symfile_bfd_open. */ | |
13121 | ||
192b62ce | 13122 | static gdb_bfd_ref_ptr |
976ca316 | 13123 | open_dwp_file (dwarf2_per_objfile *per_objfile, const char *file_name) |
ab5088bf | 13124 | { |
976ca316 | 13125 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (per_objfile, file_name, |
ed2dc618 | 13126 | 1 /*is_dwp*/, |
192b62ce | 13127 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13128 | if (abfd != NULL) |
13129 | return abfd; | |
13130 | ||
13131 | /* Work around upstream bug 15652. | |
13132 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13133 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13134 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13135 | of the executable's path may have discarded the needed info. | |
13136 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13137 | .gnu_debuglink, but that doesn't exist yet.] | |
13138 | Strip the directory from FILE_NAME and search again. */ | |
13139 | if (*debug_file_directory != '\0') | |
13140 | { | |
13141 | /* Don't implicitly search the current directory here. | |
13142 | If the user wants to search "." to handle this case, | |
13143 | it must be added to debug-file-directory. */ | |
976ca316 SM |
13144 | return try_open_dwop_file (per_objfile, lbasename (file_name), |
13145 | 1 /*is_dwp*/, | |
6ac97d4c DE |
13146 | 0 /*search_cwd*/); |
13147 | } | |
13148 | ||
13149 | return NULL; | |
ab5088bf DE |
13150 | } |
13151 | ||
80626a55 DE |
13152 | /* Initialize the use of the DWP file for the current objfile. |
13153 | By convention the name of the DWP file is ${objfile}.dwp. | |
13154 | The result is NULL if it can't be found. */ | |
a766d390 | 13155 | |
400174b1 | 13156 | static std::unique_ptr<struct dwp_file> |
976ca316 | 13157 | open_and_init_dwp_file (dwarf2_per_objfile *per_objfile) |
80626a55 | 13158 | { |
976ca316 | 13159 | struct objfile *objfile = per_objfile->objfile; |
80626a55 | 13160 | |
82bf32bc JK |
13161 | /* Try to find first .dwp for the binary file before any symbolic links |
13162 | resolving. */ | |
6c447423 DE |
13163 | |
13164 | /* If the objfile is a debug file, find the name of the real binary | |
13165 | file and get the name of dwp file from there. */ | |
d721ba37 | 13166 | std::string dwp_name; |
6c447423 DE |
13167 | if (objfile->separate_debug_objfile_backlink != NULL) |
13168 | { | |
13169 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13170 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13171 | |
d721ba37 | 13172 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13173 | } |
13174 | else | |
d721ba37 PA |
13175 | dwp_name = objfile->original_name; |
13176 | ||
13177 | dwp_name += ".dwp"; | |
80626a55 | 13178 | |
976ca316 | 13179 | gdb_bfd_ref_ptr dbfd (open_dwp_file (per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13180 | if (dbfd == NULL |
13181 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13182 | { | |
13183 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13184 | dwp_name = objfile_name (objfile); |
13185 | dwp_name += ".dwp"; | |
976ca316 | 13186 | dbfd = open_dwp_file (per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13187 | } |
13188 | ||
80626a55 DE |
13189 | if (dbfd == NULL) |
13190 | { | |
6f738b01 SM |
13191 | dwarf_read_debug_printf ("DWP file not found: %s", dwp_name.c_str ()); |
13192 | ||
400174b1 | 13193 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 13194 | } |
400174b1 TT |
13195 | |
13196 | const char *name = bfd_get_filename (dbfd.get ()); | |
13197 | std::unique_ptr<struct dwp_file> dwp_file | |
13198 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 13199 | |
0a0f4c01 | 13200 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 | 13201 | dwp_file->elf_sections = |
976ca316 | 13202 | OBSTACK_CALLOC (&per_objfile->per_bfd->obstack, |
80626a55 DE |
13203 | dwp_file->num_sections, asection *); |
13204 | ||
5bb6e9dd TT |
13205 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
13206 | dwarf2_locate_common_dwp_sections (dwp_file->dbfd.get (), sec, | |
13207 | dwp_file.get ()); | |
80626a55 | 13208 | |
976ca316 | 13209 | dwp_file->cus = create_dwp_hash_table (per_objfile, dwp_file.get (), 0); |
80626a55 | 13210 | |
976ca316 | 13211 | dwp_file->tus = create_dwp_hash_table (per_objfile, dwp_file.get (), 1); |
80626a55 | 13212 | |
73869dc2 | 13213 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13214 | if (dwp_file->cus && dwp_file->tus |
13215 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13216 | { |
13217 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13218 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13219 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13220 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13221 | " TU version %s [in DWP file %s]"), | |
13222 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13223 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13224 | } |
08302ed2 DE |
13225 | |
13226 | if (dwp_file->cus) | |
13227 | dwp_file->version = dwp_file->cus->version; | |
13228 | else if (dwp_file->tus) | |
13229 | dwp_file->version = dwp_file->tus->version; | |
13230 | else | |
13231 | dwp_file->version = 2; | |
73869dc2 | 13232 | |
5bb6e9dd TT |
13233 | for (asection *sec : gdb_bfd_sections (dwp_file->dbfd)) |
13234 | { | |
13235 | if (dwp_file->version == 2) | |
13236 | dwarf2_locate_v2_dwp_sections (dwp_file->dbfd.get (), sec, | |
13237 | dwp_file.get ()); | |
13238 | else | |
13239 | dwarf2_locate_v5_dwp_sections (dwp_file->dbfd.get (), sec, | |
13240 | dwp_file.get ()); | |
13241 | } | |
73869dc2 | 13242 | |
298e9637 SM |
13243 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
13244 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 13245 | |
6f738b01 SM |
13246 | dwarf_read_debug_printf ("DWP file found: %s", dwp_file->name); |
13247 | dwarf_read_debug_printf (" %s CUs, %s TUs", | |
13248 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13249 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13250 | |
13251 | return dwp_file; | |
3019eac3 | 13252 | } |
c906108c | 13253 | |
ab5088bf DE |
13254 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13255 | ||
13256 | static struct dwp_file * | |
976ca316 | 13257 | get_dwp_file (dwarf2_per_objfile *per_objfile) |
ab5088bf | 13258 | { |
976ca316 | 13259 | if (!per_objfile->per_bfd->dwp_checked) |
ab5088bf | 13260 | { |
976ca316 SM |
13261 | per_objfile->per_bfd->dwp_file = open_and_init_dwp_file (per_objfile); |
13262 | per_objfile->per_bfd->dwp_checked = 1; | |
ab5088bf | 13263 | } |
976ca316 | 13264 | return per_objfile->per_bfd->dwp_file.get (); |
ab5088bf DE |
13265 | } |
13266 | ||
80626a55 DE |
13267 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13268 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13269 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13270 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13271 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13272 | ||
13273 | This is called, for example, when wanting to read a variable with a | |
13274 | complex location. Therefore we don't want to do file i/o for every call. | |
13275 | Therefore we don't want to look for a DWO file on every call. | |
13276 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13277 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13278 | for a DWO file. | |
13279 | ||
1c658ad5 | 13280 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13281 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13282 | |
3019eac3 | 13283 | static struct dwo_unit * |
4ab09049 | 13284 | lookup_dwo_cutu (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 | 13285 | ULONGEST signature, int is_debug_types) |
3019eac3 | 13286 | { |
976ca316 SM |
13287 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13288 | struct objfile *objfile = per_objfile->objfile; | |
80626a55 DE |
13289 | const char *kind = is_debug_types ? "TU" : "CU"; |
13290 | void **dwo_file_slot; | |
3019eac3 | 13291 | struct dwo_file *dwo_file; |
80626a55 | 13292 | struct dwp_file *dwp_file; |
cb1df416 | 13293 | |
6a506a2d DE |
13294 | /* First see if there's a DWP file. |
13295 | If we have a DWP file but didn't find the DWO inside it, don't | |
13296 | look for the original DWO file. It makes gdb behave differently | |
13297 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13298 | |
976ca316 | 13299 | dwp_file = get_dwp_file (per_objfile); |
80626a55 | 13300 | if (dwp_file != NULL) |
cf2c3c16 | 13301 | { |
80626a55 DE |
13302 | const struct dwp_hash_table *dwp_htab = |
13303 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13304 | ||
13305 | if (dwp_htab != NULL) | |
13306 | { | |
13307 | struct dwo_unit *dwo_cutu = | |
976ca316 SM |
13308 | lookup_dwo_unit_in_dwp (per_objfile, dwp_file, comp_dir, signature, |
13309 | is_debug_types); | |
80626a55 DE |
13310 | |
13311 | if (dwo_cutu != NULL) | |
13312 | { | |
6f738b01 SM |
13313 | dwarf_read_debug_printf ("Virtual DWO %s %s found: @%s", |
13314 | kind, hex_string (signature), | |
13315 | host_address_to_string (dwo_cutu)); | |
13316 | ||
80626a55 DE |
13317 | return dwo_cutu; |
13318 | } | |
13319 | } | |
13320 | } | |
6a506a2d | 13321 | else |
80626a55 | 13322 | { |
6a506a2d | 13323 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13324 | |
976ca316 | 13325 | dwo_file_slot = lookup_dwo_file_slot (per_objfile, dwo_name, comp_dir); |
6a506a2d | 13326 | if (*dwo_file_slot == NULL) |
80626a55 | 13327 | { |
6a506a2d | 13328 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
4ab09049 | 13329 | *dwo_file_slot = open_and_init_dwo_file (cu, dwo_name, comp_dir); |
19c3d4c9 | 13330 | } |
6a506a2d | 13331 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13332 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13333 | |
6a506a2d | 13334 | if (dwo_file != NULL) |
19c3d4c9 | 13335 | { |
6a506a2d DE |
13336 | struct dwo_unit *dwo_cutu = NULL; |
13337 | ||
13338 | if (is_debug_types && dwo_file->tus) | |
13339 | { | |
13340 | struct dwo_unit find_dwo_cutu; | |
13341 | ||
13342 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13343 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 13344 | dwo_cutu |
b0b6a987 TT |
13345 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
13346 | &find_dwo_cutu); | |
6a506a2d | 13347 | } |
33c5cd75 | 13348 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13349 | { |
33c5cd75 DB |
13350 | struct dwo_unit find_dwo_cutu; |
13351 | ||
13352 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13353 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 13354 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 13355 | &find_dwo_cutu); |
6a506a2d DE |
13356 | } |
13357 | ||
13358 | if (dwo_cutu != NULL) | |
13359 | { | |
6f738b01 SM |
13360 | dwarf_read_debug_printf ("DWO %s %s(%s) found: @%s", |
13361 | kind, dwo_name, hex_string (signature), | |
13362 | host_address_to_string (dwo_cutu)); | |
13363 | ||
6a506a2d | 13364 | return dwo_cutu; |
80626a55 DE |
13365 | } |
13366 | } | |
2e276125 | 13367 | } |
9cdd5dbd | 13368 | |
80626a55 DE |
13369 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13370 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13371 | correctly to find the file. */ | |
13372 | ||
6f738b01 SM |
13373 | dwarf_read_debug_printf ("DWO %s %s(%s) not found", |
13374 | kind, dwo_name, hex_string (signature)); | |
3019eac3 | 13375 | |
6656a72d DE |
13376 | /* This is a warning and not a complaint because it can be caused by |
13377 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13378 | { |
13379 | /* Print the name of the DWP file if we looked there, helps the user | |
13380 | better diagnose the problem. */ | |
791afaa2 | 13381 | std::string dwp_text; |
43942612 DE |
13382 | |
13383 | if (dwp_file != NULL) | |
791afaa2 TT |
13384 | dwp_text = string_printf (" [in DWP file %s]", |
13385 | lbasename (dwp_file->name)); | |
43942612 | 13386 | |
9d8780f0 | 13387 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 | 13388 | " [in module %s]"), |
4ab09049 SM |
13389 | kind, dwo_name, hex_string (signature), dwp_text.c_str (), kind, |
13390 | sect_offset_str (cu->per_cu->sect_off), objfile_name (objfile)); | |
43942612 | 13391 | } |
3019eac3 | 13392 | return NULL; |
5fb290d7 DJ |
13393 | } |
13394 | ||
80626a55 DE |
13395 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13396 | See lookup_dwo_cutu_unit for details. */ | |
13397 | ||
13398 | static struct dwo_unit * | |
4ab09049 | 13399 | lookup_dwo_comp_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir, |
80626a55 DE |
13400 | ULONGEST signature) |
13401 | { | |
4ab09049 SM |
13402 | gdb_assert (!cu->per_cu->is_debug_types); |
13403 | ||
13404 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, signature, 0); | |
80626a55 DE |
13405 | } |
13406 | ||
13407 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13408 | See lookup_dwo_cutu_unit for details. */ | |
13409 | ||
13410 | static struct dwo_unit * | |
4ab09049 | 13411 | lookup_dwo_type_unit (dwarf2_cu *cu, const char *dwo_name, const char *comp_dir) |
80626a55 | 13412 | { |
4ab09049 SM |
13413 | gdb_assert (cu->per_cu->is_debug_types); |
13414 | ||
13415 | signatured_type *sig_type = (signatured_type *) cu->per_cu; | |
13416 | ||
13417 | return lookup_dwo_cutu (cu, dwo_name, comp_dir, sig_type->signature, 1); | |
80626a55 DE |
13418 | } |
13419 | ||
89e63ee4 DE |
13420 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13421 | ||
13422 | static int | |
13423 | queue_and_load_dwo_tu (void **slot, void *info) | |
13424 | { | |
13425 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
d460f660 | 13426 | dwarf2_cu *cu = (dwarf2_cu *) info; |
89e63ee4 | 13427 | ULONGEST signature = dwo_unit->signature; |
d460f660 | 13428 | signatured_type *sig_type = lookup_dwo_signatured_type (cu, signature); |
89e63ee4 DE |
13429 | |
13430 | if (sig_type != NULL) | |
13431 | { | |
13432 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13433 | ||
13434 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13435 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13436 | while processing PER_CU. */ | |
120ce1b5 | 13437 | if (maybe_queue_comp_unit (NULL, sig_cu, cu->per_objfile, cu->language)) |
d460f660 SM |
13438 | load_full_type_unit (sig_cu, cu->per_objfile); |
13439 | cu->per_cu->imported_symtabs_push (sig_cu); | |
89e63ee4 DE |
13440 | } |
13441 | ||
13442 | return 1; | |
13443 | } | |
13444 | ||
1b555f17 | 13445 | /* Queue all TUs contained in the DWO of CU to be read in. |
89e63ee4 DE |
13446 | The DWO may have the only definition of the type, though it may not be |
13447 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13448 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13449 | ||
13450 | static void | |
1b555f17 | 13451 | queue_and_load_all_dwo_tus (dwarf2_cu *cu) |
89e63ee4 DE |
13452 | { |
13453 | struct dwo_unit *dwo_unit; | |
13454 | struct dwo_file *dwo_file; | |
13455 | ||
1b555f17 SM |
13456 | gdb_assert (cu != nullptr); |
13457 | gdb_assert (!cu->per_cu->is_debug_types); | |
13458 | gdb_assert (get_dwp_file (cu->per_objfile) == nullptr); | |
89e63ee4 | 13459 | |
1b555f17 | 13460 | dwo_unit = cu->dwo_unit; |
89e63ee4 DE |
13461 | gdb_assert (dwo_unit != NULL); |
13462 | ||
13463 | dwo_file = dwo_unit->dwo_file; | |
13464 | if (dwo_file->tus != NULL) | |
1b555f17 | 13465 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, cu); |
89e63ee4 DE |
13466 | } |
13467 | ||
3019eac3 | 13468 | /* Read in various DIEs. */ |
348e048f | 13469 | |
d389af10 | 13470 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13471 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13472 | already referenced by DW_AT_abstract_origin from the children of the | |
13473 | current DIE. */ | |
d389af10 JK |
13474 | |
13475 | static void | |
13476 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13477 | { | |
13478 | struct die_info *child_die; | |
791afaa2 | 13479 | sect_offset *offsetp; |
d389af10 JK |
13480 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13481 | struct die_info *origin_die; | |
13482 | /* Iterator of the ORIGIN_DIE children. */ | |
13483 | struct die_info *origin_child_die; | |
d389af10 | 13484 | struct attribute *attr; |
cd02d79d PA |
13485 | struct dwarf2_cu *origin_cu; |
13486 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13487 | |
13488 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13489 | if (!attr) | |
13490 | return; | |
13491 | ||
cd02d79d PA |
13492 | /* Note that following die references may follow to a die in a |
13493 | different cu. */ | |
13494 | ||
13495 | origin_cu = cu; | |
13496 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13497 | ||
13498 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13499 | symbols in. */ | |
13500 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13501 | origin_cu->list_in_scope = cu->list_in_scope; | |
13502 | ||
edb3359d DJ |
13503 | if (die->tag != origin_die->tag |
13504 | && !(die->tag == DW_TAG_inlined_subroutine | |
13505 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13506 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13507 | sect_offset_str (die->sect_off), |
13508 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13509 | |
791afaa2 | 13510 | std::vector<sect_offset> offsets; |
d389af10 | 13511 | |
3ea89b92 PMR |
13512 | for (child_die = die->child; |
13513 | child_die && child_die->tag; | |
436c571c | 13514 | child_die = child_die->sibling) |
3ea89b92 PMR |
13515 | { |
13516 | struct die_info *child_origin_die; | |
13517 | struct dwarf2_cu *child_origin_cu; | |
13518 | ||
13519 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13520 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13521 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13522 | present in the abstract instance but not referenced in the concrete | |
13523 | one. */ | |
216f72a1 | 13524 | if (child_die->tag == DW_TAG_call_site |
dda83cd7 | 13525 | || child_die->tag == DW_TAG_GNU_call_site) |
3ea89b92 PMR |
13526 | continue; |
13527 | ||
c38f313d DJ |
13528 | /* For each CHILD_DIE, find the corresponding child of |
13529 | ORIGIN_DIE. If there is more than one layer of | |
13530 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13531 | but GCC versions at least through 4.4 generate this (GCC PR | |
13532 | 40573). */ | |
3ea89b92 PMR |
13533 | child_origin_die = child_die; |
13534 | child_origin_cu = cu; | |
c38f313d DJ |
13535 | while (1) |
13536 | { | |
cd02d79d PA |
13537 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13538 | child_origin_cu); | |
c38f313d DJ |
13539 | if (attr == NULL) |
13540 | break; | |
cd02d79d PA |
13541 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13542 | &child_origin_cu); | |
c38f313d DJ |
13543 | } |
13544 | ||
d389af10 JK |
13545 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13546 | counterpart may exist. */ | |
c38f313d | 13547 | if (child_origin_die != child_die) |
d389af10 | 13548 | { |
edb3359d DJ |
13549 | if (child_die->tag != child_origin_die->tag |
13550 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13551 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13552 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13553 | "different tags"), |
9d8780f0 SM |
13554 | sect_offset_str (child_die->sect_off), |
13555 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13556 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13557 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13558 | "different parents"), |
9d8780f0 SM |
13559 | sect_offset_str (child_die->sect_off), |
13560 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13561 | else |
791afaa2 | 13562 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13563 | } |
d389af10 | 13564 | } |
791afaa2 TT |
13565 | std::sort (offsets.begin (), offsets.end ()); |
13566 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13567 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13568 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13569 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13570 | "to DIE %s as their abstract origin"), |
13571 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13572 | |
791afaa2 | 13573 | offsetp = offsets.data (); |
d389af10 JK |
13574 | origin_child_die = origin_die->child; |
13575 | while (origin_child_die && origin_child_die->tag) | |
13576 | { | |
13577 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13578 | while (offsetp < offsets_end |
9c541725 | 13579 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13580 | offsetp++; |
b64f50a1 | 13581 | if (offsetp >= offsets_end |
9c541725 | 13582 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13583 | { |
adde2bff DE |
13584 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13585 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13586 | This can happen with mutually referenced abstract_origins. | |
13587 | PR 16581. */ | |
13588 | if (!origin_child_die->in_process) | |
13589 | process_die (origin_child_die, origin_cu); | |
d389af10 | 13590 | } |
436c571c | 13591 | origin_child_die = origin_child_die->sibling; |
d389af10 | 13592 | } |
cd02d79d | 13593 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
13594 | |
13595 | if (cu != origin_cu) | |
13596 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
13597 | } |
13598 | ||
c906108c | 13599 | static void |
e7c27a73 | 13600 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13601 | { |
5e22e966 | 13602 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13603 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 13604 | struct context_stack *newobj; |
c906108c SS |
13605 | CORE_ADDR lowpc; |
13606 | CORE_ADDR highpc; | |
13607 | struct die_info *child_die; | |
edb3359d | 13608 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13609 | const char *name; |
e142c38c | 13610 | CORE_ADDR baseaddr; |
801e3a5b | 13611 | struct block *block; |
edb3359d | 13612 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13613 | std::vector<struct symbol *> template_args; |
34eaf542 | 13614 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13615 | |
13616 | if (inlined_func) | |
13617 | { | |
13618 | /* If we do not have call site information, we can't show the | |
13619 | caller of this inlined function. That's too confusing, so | |
13620 | only use the scope for local variables. */ | |
13621 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13622 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13623 | if (call_line == NULL || call_file == NULL) | |
13624 | { | |
13625 | read_lexical_block_scope (die, cu); | |
13626 | return; | |
13627 | } | |
13628 | } | |
c906108c | 13629 | |
b3b3bada | 13630 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13631 | |
94af9270 | 13632 | name = dwarf2_name (die, cu); |
c906108c | 13633 | |
e8d05480 JB |
13634 | /* Ignore functions with missing or empty names. These are actually |
13635 | illegal according to the DWARF standard. */ | |
13636 | if (name == NULL) | |
13637 | { | |
b98664d3 | 13638 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13639 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13640 | return; |
13641 | } | |
13642 | ||
13643 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13644 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13645 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13646 | { |
ae4d0c03 | 13647 | attr = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 13648 | if (attr == nullptr || !attr->as_boolean ()) |
b98664d3 | 13649 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13650 | "for subprogram DIE at %s"), |
13651 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13652 | return; |
13653 | } | |
c906108c | 13654 | |
3e29f34a MR |
13655 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13656 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13657 | |
34eaf542 TT |
13658 | /* If we have any template arguments, then we must allocate a |
13659 | different sort of symbol. */ | |
436c571c | 13660 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
13661 | { |
13662 | if (child_die->tag == DW_TAG_template_type_param | |
13663 | || child_die->tag == DW_TAG_template_value_param) | |
13664 | { | |
8c14c3a3 | 13665 | templ_func = new (&objfile->objfile_obstack) template_symbol; |
cf724bc9 | 13666 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13667 | break; |
13668 | } | |
13669 | } | |
13670 | ||
702cf3f5 | 13671 | gdb_assert (cu->get_builder () != nullptr); |
c24bdb02 | 13672 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13673 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13674 | (struct symbol *) templ_func); | |
4c2df51b | 13675 | |
81873cc8 | 13676 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13677 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13678 | cu->language); |
13679 | ||
4cecd739 DJ |
13680 | /* If there is a location expression for DW_AT_frame_base, record |
13681 | it. */ | |
e142c38c | 13682 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13683 | if (attr != nullptr) |
fe978cb0 | 13684 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13685 | |
63e43d3a PMR |
13686 | /* If there is a location for the static link, record it. */ |
13687 | newobj->static_link = NULL; | |
13688 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13689 | if (attr != nullptr) |
63e43d3a | 13690 | { |
224c3ddb SM |
13691 | newobj->static_link |
13692 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 13693 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
293e7e51 | 13694 | cu->addr_type ()); |
63e43d3a PMR |
13695 | } |
13696 | ||
c24bdb02 | 13697 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13698 | |
639d11d3 | 13699 | if (die->child != NULL) |
c906108c | 13700 | { |
639d11d3 | 13701 | child_die = die->child; |
c906108c SS |
13702 | while (child_die && child_die->tag) |
13703 | { | |
34eaf542 TT |
13704 | if (child_die->tag == DW_TAG_template_type_param |
13705 | || child_die->tag == DW_TAG_template_value_param) | |
13706 | { | |
13707 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13708 | ||
f1078f66 | 13709 | if (arg != NULL) |
2f4732b0 | 13710 | template_args.push_back (arg); |
34eaf542 TT |
13711 | } |
13712 | else | |
13713 | process_die (child_die, cu); | |
436c571c | 13714 | child_die = child_die->sibling; |
c906108c SS |
13715 | } |
13716 | } | |
13717 | ||
d389af10 JK |
13718 | inherit_abstract_dies (die, cu); |
13719 | ||
4a811a97 UW |
13720 | /* If we have a DW_AT_specification, we might need to import using |
13721 | directives from the context of the specification DIE. See the | |
13722 | comment in determine_prefix. */ | |
13723 | if (cu->language == language_cplus | |
13724 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13725 | { | |
13726 | struct dwarf2_cu *spec_cu = cu; | |
13727 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13728 | ||
13729 | while (spec_die) | |
13730 | { | |
13731 | child_die = spec_die->child; | |
13732 | while (child_die && child_die->tag) | |
13733 | { | |
13734 | if (child_die->tag == DW_TAG_imported_module) | |
13735 | process_die (child_die, spec_cu); | |
436c571c | 13736 | child_die = child_die->sibling; |
4a811a97 UW |
13737 | } |
13738 | ||
13739 | /* In some cases, GCC generates specification DIEs that | |
13740 | themselves contain DW_AT_specification attributes. */ | |
13741 | spec_die = die_specification (spec_die, &spec_cu); | |
13742 | } | |
13743 | } | |
13744 | ||
c24bdb02 | 13745 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13746 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13747 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13748 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13749 | |
df8a16a1 | 13750 | /* For C++, set the block's scope. */ |
45280282 IB |
13751 | if ((cu->language == language_cplus |
13752 | || cu->language == language_fortran | |
c44af4eb TT |
13753 | || cu->language == language_d |
13754 | || cu->language == language_rust) | |
4d4ec4e5 | 13755 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13756 | block_set_scope (block, determine_prefix (die, cu), |
13757 | &objfile->objfile_obstack); | |
df8a16a1 | 13758 | |
801e3a5b JB |
13759 | /* If we have address ranges, record them. */ |
13760 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13761 | |
a60f3166 | 13762 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13763 | |
34eaf542 | 13764 | /* Attach template arguments to function. */ |
2f4732b0 | 13765 | if (!template_args.empty ()) |
34eaf542 TT |
13766 | { |
13767 | gdb_assert (templ_func != NULL); | |
13768 | ||
2f4732b0 | 13769 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13770 | templ_func->template_arguments |
dda83cd7 | 13771 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
8d749320 | 13772 | templ_func->n_template_arguments); |
34eaf542 | 13773 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13774 | template_args.data (), |
34eaf542 | 13775 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13776 | |
13777 | /* Make sure that the symtab is set on the new symbols. Even | |
13778 | though they don't appear in this symtab directly, other parts | |
13779 | of gdb assume that symbols do, and this is reasonably | |
13780 | true. */ | |
8634679f | 13781 | for (symbol *sym : template_args) |
3e1d3d8c | 13782 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13783 | } |
13784 | ||
208d8187 JB |
13785 | /* In C++, we can have functions nested inside functions (e.g., when |
13786 | a function declares a class that has methods). This means that | |
13787 | when we finish processing a function scope, we may need to go | |
13788 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13789 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13790 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13791 | |
921e78cf JB |
13792 | /* If we've finished processing a top-level function, subsequent |
13793 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13794 | if (cu->get_builder ()->outermost_context_p ()) |
13795 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13796 | } |
13797 | ||
13798 | /* Process all the DIES contained within a lexical block scope. Start | |
13799 | a new scope, process the dies, and then close the scope. */ | |
13800 | ||
13801 | static void | |
e7c27a73 | 13802 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13803 | { |
5e22e966 | 13804 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13805 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13806 | CORE_ADDR lowpc, highpc; |
13807 | struct die_info *child_die; | |
e142c38c DJ |
13808 | CORE_ADDR baseaddr; |
13809 | ||
b3b3bada | 13810 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13811 | |
13812 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13813 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13814 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13815 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13816 | describe ranges. */ |
e385593e JK |
13817 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13818 | { | |
13819 | case PC_BOUNDS_NOT_PRESENT: | |
13820 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13821 | there was no wrapping by that DW_TAG_lexical_block. | |
13822 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13823 | for (child_die = die->child; | |
13824 | child_die != NULL && child_die->tag; | |
436c571c | 13825 | child_die = child_die->sibling) |
4f7bc5ed TT |
13826 | { |
13827 | /* We might already be processing this DIE. This can happen | |
13828 | in an unusual circumstance -- where a subroutine A | |
13829 | appears lexically in another subroutine B, but A actually | |
13830 | inlines B. The recursion is broken here, rather than in | |
13831 | inherit_abstract_dies, because it seems better to simply | |
13832 | drop concrete children here. */ | |
13833 | if (!child_die->in_process) | |
13834 | process_die (child_die, cu); | |
13835 | } | |
e385593e JK |
13836 | return; |
13837 | case PC_BOUNDS_INVALID: | |
13838 | return; | |
13839 | } | |
3e29f34a MR |
13840 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13841 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13842 | |
c24bdb02 | 13843 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13844 | if (die->child != NULL) |
c906108c | 13845 | { |
639d11d3 | 13846 | child_die = die->child; |
c906108c SS |
13847 | while (child_die && child_die->tag) |
13848 | { | |
e7c27a73 | 13849 | process_die (child_die, cu); |
436c571c | 13850 | child_die = child_die->sibling; |
c906108c SS |
13851 | } |
13852 | } | |
3ea89b92 | 13853 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13854 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13855 | |
c24bdb02 KS |
13856 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13857 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13858 | { |
801e3a5b | 13859 | struct block *block |
dda83cd7 | 13860 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13861 | cstk.start_addr, highpc); |
801e3a5b JB |
13862 | |
13863 | /* Note that recording ranges after traversing children, as we | |
dda83cd7 SM |
13864 | do here, means that recording a parent's ranges entails |
13865 | walking across all its children's ranges as they appear in | |
13866 | the address map, which is quadratic behavior. | |
13867 | ||
13868 | It would be nicer to record the parent's ranges before | |
13869 | traversing its children, simply overriding whatever you find | |
13870 | there. But since we don't even decide whether to create a | |
13871 | block until after we've traversed its children, that's hard | |
13872 | to do. */ | |
801e3a5b | 13873 | dwarf2_record_block_ranges (die, block, baseaddr, cu); |
c906108c | 13874 | } |
c24bdb02 KS |
13875 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13876 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13877 | } |
13878 | ||
216f72a1 | 13879 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13880 | |
13881 | static void | |
13882 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13883 | { | |
5e22e966 | 13884 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 13885 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 13886 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13887 | CORE_ADDR pc, baseaddr; |
13888 | struct attribute *attr; | |
13889 | struct call_site *call_site, call_site_local; | |
13890 | void **slot; | |
13891 | int nparams; | |
13892 | struct die_info *child_die; | |
13893 | ||
b3b3bada | 13894 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13895 | |
216f72a1 JK |
13896 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13897 | if (attr == NULL) | |
13898 | { | |
13899 | /* This was a pre-DWARF-5 GNU extension alias | |
13900 | for DW_AT_call_return_pc. */ | |
13901 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13902 | } | |
96408a79 SA |
13903 | if (!attr) |
13904 | { | |
b98664d3 | 13905 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13906 | "DIE %s [in module %s]"), |
13907 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13908 | return; |
13909 | } | |
95f982e5 | 13910 | pc = attr->as_address () + baseaddr; |
3e29f34a | 13911 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13912 | |
13913 | if (cu->call_site_htab == NULL) | |
13914 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13915 | NULL, &objfile->objfile_obstack, | |
13916 | hashtab_obstack_allocate, NULL); | |
13917 | call_site_local.pc = pc; | |
13918 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13919 | if (*slot != NULL) | |
13920 | { | |
b98664d3 | 13921 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13922 | "DIE %s [in module %s]"), |
13923 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13924 | objfile_name (objfile)); |
96408a79 SA |
13925 | return; |
13926 | } | |
13927 | ||
13928 | /* Count parameters at the caller. */ | |
13929 | ||
13930 | nparams = 0; | |
13931 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13932 | child_die = child_die->sibling) |
96408a79 | 13933 | { |
216f72a1 | 13934 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 13935 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 | 13936 | { |
b98664d3 | 13937 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13938 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13939 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13940 | objfile_name (objfile)); |
96408a79 SA |
13941 | continue; |
13942 | } | |
13943 | ||
13944 | nparams++; | |
13945 | } | |
13946 | ||
224c3ddb SM |
13947 | call_site |
13948 | = ((struct call_site *) | |
13949 | obstack_alloc (&objfile->objfile_obstack, | |
13950 | sizeof (*call_site) | |
13951 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13952 | *slot = call_site; |
13953 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13954 | call_site->pc = pc; | |
13955 | ||
216f72a1 JK |
13956 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13957 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13958 | { |
13959 | struct die_info *func_die; | |
13960 | ||
13961 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13962 | for (func_die = die->parent; | |
13963 | func_die && func_die->tag != DW_TAG_subprogram | |
13964 | && func_die->tag != DW_TAG_subroutine_type; | |
13965 | func_die = func_die->parent); | |
13966 | ||
216f72a1 JK |
13967 | /* DW_AT_call_all_calls is a superset |
13968 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13969 | if (func_die |
dda83cd7 SM |
13970 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
13971 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
216f72a1 | 13972 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13973 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13974 | { | |
13975 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13976 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13977 | both the initial caller containing the real return address PC and | |
13978 | the final callee containing the current PC of a chain of tail | |
13979 | calls do not need to have the tail call list complete. But any | |
13980 | function candidate for a virtual tail call frame searched via | |
13981 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13982 | determined unambiguously. */ | |
13983 | } | |
13984 | else | |
13985 | { | |
13986 | struct type *func_type = NULL; | |
13987 | ||
13988 | if (func_die) | |
13989 | func_type = get_die_type (func_die, cu); | |
13990 | if (func_type != NULL) | |
13991 | { | |
78134374 | 13992 | gdb_assert (func_type->code () == TYPE_CODE_FUNC); |
96408a79 SA |
13993 | |
13994 | /* Enlist this call site to the function. */ | |
13995 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13996 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13997 | } | |
13998 | else | |
b98664d3 | 13999 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
14000 | "DIE %s [in module %s]"), |
14001 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14002 | } |
14003 | } | |
14004 | ||
216f72a1 JK |
14005 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
14006 | if (attr == NULL) | |
14007 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
14008 | if (attr == NULL) | |
14009 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 14010 | if (attr == NULL) |
216f72a1 JK |
14011 | { |
14012 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
14013 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14014 | } | |
96408a79 | 14015 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
9d2246fc | 14016 | if (!attr || (attr->form_is_block () && attr->as_block ()->size == 0)) |
96408a79 | 14017 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 14018 | else if (attr->form_is_block ()) |
96408a79 SA |
14019 | { |
14020 | struct dwarf2_locexpr_baton *dlbaton; | |
9d2246fc | 14021 | struct dwarf_block *block = attr->as_block (); |
96408a79 | 14022 | |
8d749320 | 14023 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
9d2246fc TT |
14024 | dlbaton->data = block->data; |
14025 | dlbaton->size = block->size; | |
a50264ba | 14026 | dlbaton->per_objfile = per_objfile; |
96408a79 SA |
14027 | dlbaton->per_cu = cu->per_cu; |
14028 | ||
14029 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
14030 | } | |
cd6c91b4 | 14031 | else if (attr->form_is_ref ()) |
96408a79 | 14032 | { |
96408a79 SA |
14033 | struct dwarf2_cu *target_cu = cu; |
14034 | struct die_info *target_die; | |
14035 | ||
ac9ec31b | 14036 | target_die = follow_die_ref (die, attr, &target_cu); |
5e22e966 | 14037 | gdb_assert (target_cu->per_objfile->objfile == objfile); |
96408a79 SA |
14038 | if (die_is_declaration (target_die, target_cu)) |
14039 | { | |
7d45c7c3 | 14040 | const char *target_physname; |
9112db09 JK |
14041 | |
14042 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 14043 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 14044 | if (target_physname == NULL) |
9112db09 | 14045 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 14046 | if (target_physname == NULL) |
b98664d3 | 14047 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 14048 | "physname, for referencing DIE %s [in module %s]"), |
9d8780f0 | 14049 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 14050 | else |
7d455152 | 14051 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
14052 | } |
14053 | else | |
14054 | { | |
14055 | CORE_ADDR lowpc; | |
14056 | ||
14057 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 14058 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 14059 | <= PC_BOUNDS_INVALID) |
b98664d3 | 14060 | complaint (_("DW_AT_call_target target DIE has invalid " |
dda83cd7 | 14061 | "low pc, for referencing DIE %s [in module %s]"), |
9d8780f0 | 14062 | sect_offset_str (die->sect_off), objfile_name (objfile)); |
96408a79 | 14063 | else |
3e29f34a MR |
14064 | { |
14065 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
14066 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
14067 | } | |
96408a79 SA |
14068 | } |
14069 | } | |
14070 | else | |
b98664d3 | 14071 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
14072 | "block nor reference, for DIE %s [in module %s]"), |
14073 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14074 | |
14075 | call_site->per_cu = cu->per_cu; | |
9f47c707 | 14076 | call_site->per_objfile = per_objfile; |
96408a79 SA |
14077 | |
14078 | for (child_die = die->child; | |
14079 | child_die && child_die->tag; | |
436c571c | 14080 | child_die = child_die->sibling) |
96408a79 | 14081 | { |
96408a79 | 14082 | struct call_site_parameter *parameter; |
1788b2d3 | 14083 | struct attribute *loc, *origin; |
96408a79 | 14084 | |
216f72a1 | 14085 | if (child_die->tag != DW_TAG_call_site_parameter |
dda83cd7 | 14086 | && child_die->tag != DW_TAG_GNU_call_site_parameter) |
96408a79 SA |
14087 | { |
14088 | /* Already printed the complaint above. */ | |
14089 | continue; | |
14090 | } | |
14091 | ||
14092 | gdb_assert (call_site->parameter_count < nparams); | |
14093 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14094 | ||
1788b2d3 JK |
14095 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14096 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14097 | register is contained in DW_AT_call_value. */ |
96408a79 | 14098 | |
24c5c679 | 14099 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14100 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14101 | if (origin == NULL) | |
14102 | { | |
14103 | /* This was a pre-DWARF-5 GNU extension alias | |
14104 | for DW_AT_call_parameter. */ | |
14105 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14106 | } | |
cd6c91b4 | 14107 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 14108 | { |
1788b2d3 | 14109 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 14110 | |
0826b30a | 14111 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 14112 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
14113 | { |
14114 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14115 | binding can be done only inside one CU. Such referenced DIE | |
14116 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 14117 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14118 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14119 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14120 | objfile_name (objfile)); |
d76b7dbc JK |
14121 | continue; |
14122 | } | |
9c541725 PA |
14123 | parameter->u.param_cu_off |
14124 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 14125 | } |
4fc6c0d5 | 14126 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 14127 | { |
b98664d3 | 14128 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
14129 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14130 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14131 | continue; |
14132 | } | |
24c5c679 | 14133 | else |
96408a79 | 14134 | { |
9d2246fc TT |
14135 | struct dwarf_block *block = loc->as_block (); |
14136 | ||
24c5c679 | 14137 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
9d2246fc | 14138 | (block->data, &block->data[block->size]); |
24c5c679 JK |
14139 | if (parameter->u.dwarf_reg != -1) |
14140 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
9d2246fc TT |
14141 | else if (dwarf_block_to_sp_offset (gdbarch, block->data, |
14142 | &block->data[block->size], | |
24c5c679 JK |
14143 | ¶meter->u.fb_offset)) |
14144 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14145 | else | |
14146 | { | |
b98664d3 | 14147 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 14148 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 14149 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14150 | "[in module %s]"), |
9d8780f0 | 14151 | sect_offset_str (child_die->sect_off), |
9c541725 | 14152 | objfile_name (objfile)); |
24c5c679 JK |
14153 | continue; |
14154 | } | |
96408a79 SA |
14155 | } |
14156 | ||
216f72a1 JK |
14157 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14158 | if (attr == NULL) | |
14159 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 14160 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 14161 | { |
b98664d3 | 14162 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14163 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14164 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14165 | objfile_name (objfile)); |
96408a79 SA |
14166 | continue; |
14167 | } | |
9d2246fc TT |
14168 | |
14169 | struct dwarf_block *block = attr->as_block (); | |
14170 | parameter->value = block->data; | |
14171 | parameter->value_size = block->size; | |
96408a79 SA |
14172 | |
14173 | /* Parameters are not pre-cleared by memset above. */ | |
14174 | parameter->data_value = NULL; | |
14175 | parameter->data_value_size = 0; | |
14176 | call_site->parameter_count++; | |
14177 | ||
216f72a1 JK |
14178 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14179 | if (attr == NULL) | |
14180 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 14181 | if (attr != nullptr) |
96408a79 | 14182 | { |
4fc6c0d5 | 14183 | if (!attr->form_is_block ()) |
b98664d3 | 14184 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14185 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14186 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14187 | objfile_name (objfile)); |
96408a79 SA |
14188 | else |
14189 | { | |
9d2246fc TT |
14190 | block = attr->as_block (); |
14191 | parameter->data_value = block->data; | |
14192 | parameter->data_value_size = block->size; | |
96408a79 SA |
14193 | } |
14194 | } | |
14195 | } | |
14196 | } | |
14197 | ||
71a3c369 TT |
14198 | /* Helper function for read_variable. If DIE represents a virtual |
14199 | table, then return the type of the concrete object that is | |
14200 | associated with the virtual table. Otherwise, return NULL. */ | |
14201 | ||
14202 | static struct type * | |
14203 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14204 | { | |
14205 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14206 | if (attr == NULL) | |
14207 | return NULL; | |
14208 | ||
14209 | /* Find the type DIE. */ | |
14210 | struct die_info *type_die = NULL; | |
14211 | struct dwarf2_cu *type_cu = cu; | |
14212 | ||
cd6c91b4 | 14213 | if (attr->form_is_ref ()) |
71a3c369 TT |
14214 | type_die = follow_die_ref (die, attr, &type_cu); |
14215 | if (type_die == NULL) | |
14216 | return NULL; | |
14217 | ||
14218 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14219 | return NULL; | |
14220 | return die_containing_type (type_die, type_cu); | |
14221 | } | |
14222 | ||
14223 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14224 | ||
14225 | static void | |
14226 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14227 | { | |
14228 | struct rust_vtable_symbol *storage = NULL; | |
14229 | ||
14230 | if (cu->language == language_rust) | |
14231 | { | |
14232 | struct type *containing_type = rust_containing_type (die, cu); | |
14233 | ||
14234 | if (containing_type != NULL) | |
14235 | { | |
5e22e966 | 14236 | struct objfile *objfile = cu->per_objfile->objfile; |
71a3c369 | 14237 | |
8c14c3a3 | 14238 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol; |
71a3c369 | 14239 | storage->concrete_type = containing_type; |
cf724bc9 | 14240 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14241 | } |
14242 | } | |
14243 | ||
e4a62c65 TV |
14244 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
14245 | struct attribute *abstract_origin | |
14246 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14247 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
14248 | if (res == NULL && loc && abstract_origin) | |
14249 | { | |
14250 | /* We have a variable without a name, but with a location and an abstract | |
14251 | origin. This may be a concrete instance of an abstract variable | |
14252 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
14253 | later. */ | |
14254 | struct dwarf2_cu *origin_cu = cu; | |
14255 | struct die_info *origin_die | |
14256 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
5e22e966 SM |
14257 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14258 | per_objfile->per_bfd->abstract_to_concrete | |
14259 | [origin_die->sect_off].push_back (die->sect_off); | |
e4a62c65 | 14260 | } |
71a3c369 TT |
14261 | } |
14262 | ||
43988095 JK |
14263 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14264 | reading .debug_rnglists. | |
14265 | Callback's type should be: | |
14266 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14267 | Return true if the attributes are present and valid, otherwise, | |
14268 | return false. */ | |
14269 | ||
14270 | template <typename Callback> | |
14271 | static bool | |
14272 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
d0ce17d8 | 14273 | dwarf_tag tag, Callback &&callback) |
43988095 | 14274 | { |
976ca316 SM |
14275 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14276 | struct objfile *objfile = per_objfile->objfile; | |
43988095 | 14277 | bfd *obfd = objfile->obfd; |
43988095 | 14278 | /* Base address selection entry. */ |
2b24b6e4 | 14279 | gdb::optional<CORE_ADDR> base; |
43988095 | 14280 | const gdb_byte *buffer; |
43988095 JK |
14281 | CORE_ADDR baseaddr; |
14282 | bool overflow = false; | |
d0ce17d8 CT |
14283 | ULONGEST addr_index; |
14284 | struct dwarf2_section_info *rnglists_section; | |
43988095 | 14285 | |
43988095 | 14286 | base = cu->base_address; |
d0ce17d8 CT |
14287 | rnglists_section = cu_debug_rnglists_section (cu, tag); |
14288 | rnglists_section->read (objfile); | |
43988095 | 14289 | |
d0ce17d8 | 14290 | if (offset >= rnglists_section->size) |
43988095 | 14291 | { |
b98664d3 | 14292 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
14293 | offset); |
14294 | return false; | |
14295 | } | |
d0ce17d8 | 14296 | buffer = rnglists_section->buffer + offset; |
43988095 | 14297 | |
b3b3bada | 14298 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
14299 | |
14300 | while (1) | |
14301 | { | |
7814882a JK |
14302 | /* Initialize it due to a false compiler warning. */ |
14303 | CORE_ADDR range_beginning = 0, range_end = 0; | |
d0ce17d8 CT |
14304 | const gdb_byte *buf_end = (rnglists_section->buffer |
14305 | + rnglists_section->size); | |
43988095 JK |
14306 | unsigned int bytes_read; |
14307 | ||
14308 | if (buffer == buf_end) | |
14309 | { | |
14310 | overflow = true; | |
14311 | break; | |
14312 | } | |
14313 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14314 | switch (rlet) | |
14315 | { | |
14316 | case DW_RLE_end_of_list: | |
14317 | break; | |
14318 | case DW_RLE_base_address: | |
14319 | if (buffer + cu->header.addr_size > buf_end) | |
14320 | { | |
14321 | overflow = true; | |
14322 | break; | |
14323 | } | |
c8a7a66f | 14324 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14325 | buffer += bytes_read; |
14326 | break; | |
dda83cd7 SM |
14327 | case DW_RLE_base_addressx: |
14328 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14329 | buffer += bytes_read; | |
14330 | base = read_addr_index (cu, addr_index); | |
14331 | break; | |
43988095 JK |
14332 | case DW_RLE_start_length: |
14333 | if (buffer + cu->header.addr_size > buf_end) | |
14334 | { | |
14335 | overflow = true; | |
14336 | break; | |
14337 | } | |
c8a7a66f TT |
14338 | range_beginning = cu->header.read_address (obfd, buffer, |
14339 | &bytes_read); | |
43988095 JK |
14340 | buffer += bytes_read; |
14341 | range_end = (range_beginning | |
14342 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14343 | buffer += bytes_read; | |
14344 | if (buffer > buf_end) | |
14345 | { | |
14346 | overflow = true; | |
14347 | break; | |
14348 | } | |
14349 | break; | |
d0ce17d8 | 14350 | case DW_RLE_startx_length: |
dda83cd7 SM |
14351 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
14352 | buffer += bytes_read; | |
14353 | range_beginning = read_addr_index (cu, addr_index); | |
14354 | if (buffer > buf_end) | |
14355 | { | |
14356 | overflow = true; | |
14357 | break; | |
14358 | } | |
14359 | range_end = (range_beginning | |
14360 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14361 | buffer += bytes_read; | |
14362 | break; | |
43988095 JK |
14363 | case DW_RLE_offset_pair: |
14364 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14365 | buffer += bytes_read; | |
14366 | if (buffer > buf_end) | |
14367 | { | |
14368 | overflow = true; | |
14369 | break; | |
14370 | } | |
14371 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14372 | buffer += bytes_read; | |
14373 | if (buffer > buf_end) | |
14374 | { | |
14375 | overflow = true; | |
14376 | break; | |
14377 | } | |
14378 | break; | |
14379 | case DW_RLE_start_end: | |
14380 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14381 | { | |
14382 | overflow = true; | |
14383 | break; | |
14384 | } | |
c8a7a66f TT |
14385 | range_beginning = cu->header.read_address (obfd, buffer, |
14386 | &bytes_read); | |
43988095 | 14387 | buffer += bytes_read; |
c8a7a66f | 14388 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
14389 | buffer += bytes_read; |
14390 | break; | |
d0ce17d8 | 14391 | case DW_RLE_startx_endx: |
dda83cd7 SM |
14392 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); |
14393 | buffer += bytes_read; | |
14394 | range_beginning = read_addr_index (cu, addr_index); | |
14395 | if (buffer > buf_end) | |
14396 | { | |
14397 | overflow = true; | |
14398 | break; | |
14399 | } | |
14400 | addr_index = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14401 | buffer += bytes_read; | |
14402 | range_end = read_addr_index (cu, addr_index); | |
14403 | break; | |
43988095 | 14404 | default: |
b98664d3 | 14405 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14406 | return false; |
14407 | } | |
14408 | if (rlet == DW_RLE_end_of_list || overflow) | |
14409 | break; | |
14410 | if (rlet == DW_RLE_base_address) | |
14411 | continue; | |
14412 | ||
43988095 JK |
14413 | if (range_beginning > range_end) |
14414 | { | |
14415 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14416 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14417 | return false; |
14418 | } | |
14419 | ||
14420 | /* Empty range entries have no effect. */ | |
14421 | if (range_beginning == range_end) | |
14422 | continue; | |
14423 | ||
d0ce17d8 CT |
14424 | /* Only DW_RLE_offset_pair needs the base address added. */ |
14425 | if (rlet == DW_RLE_offset_pair) | |
14426 | { | |
14427 | if (!base.has_value ()) | |
14428 | { | |
14429 | /* We have no valid base address for the DW_RLE_offset_pair. */ | |
14430 | complaint (_("Invalid .debug_rnglists data (no base address for " | |
14431 | "DW_RLE_offset_pair)")); | |
14432 | return false; | |
14433 | } | |
14434 | ||
14435 | range_beginning += *base; | |
14436 | range_end += *base; | |
14437 | } | |
43988095 JK |
14438 | |
14439 | /* A not-uncommon case of bad debug info. | |
14440 | Don't pollute the addrmap with bad data. */ | |
14441 | if (range_beginning + baseaddr == 0 | |
976ca316 | 14442 | && !per_objfile->per_bfd->has_section_at_zero) |
43988095 | 14443 | { |
b98664d3 | 14444 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14445 | " [in module %s]"), objfile_name (objfile)); |
14446 | continue; | |
14447 | } | |
14448 | ||
14449 | callback (range_beginning, range_end); | |
14450 | } | |
14451 | ||
14452 | if (overflow) | |
14453 | { | |
b98664d3 | 14454 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14455 | "for DW_AT_ranges attribute"), |
14456 | offset); | |
14457 | return false; | |
14458 | } | |
14459 | ||
14460 | return true; | |
14461 | } | |
14462 | ||
14463 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14464 | Callback's type should be: | |
14465 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14466 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14467 | |
43988095 | 14468 | template <typename Callback> |
43039443 | 14469 | static int |
d0ce17d8 | 14470 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, dwarf_tag tag, |
43988095 | 14471 | Callback &&callback) |
43039443 | 14472 | { |
5e22e966 SM |
14473 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14474 | struct objfile *objfile = per_objfile->objfile; | |
43039443 JK |
14475 | struct comp_unit_head *cu_header = &cu->header; |
14476 | bfd *obfd = objfile->obfd; | |
14477 | unsigned int addr_size = cu_header->addr_size; | |
14478 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14479 | /* Base address selection entry. */ | |
2b24b6e4 | 14480 | gdb::optional<CORE_ADDR> base; |
43039443 | 14481 | unsigned int dummy; |
d521ce57 | 14482 | const gdb_byte *buffer; |
ff013f42 | 14483 | CORE_ADDR baseaddr; |
43039443 | 14484 | |
43988095 | 14485 | if (cu_header->version >= 5) |
d0ce17d8 | 14486 | return dwarf2_rnglists_process (offset, cu, tag, callback); |
43988095 | 14487 | |
d00adf39 | 14488 | base = cu->base_address; |
43039443 | 14489 | |
5e22e966 SM |
14490 | per_objfile->per_bfd->ranges.read (objfile); |
14491 | if (offset >= per_objfile->per_bfd->ranges.size) | |
43039443 | 14492 | { |
b98664d3 | 14493 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14494 | offset); |
14495 | return 0; | |
14496 | } | |
5e22e966 | 14497 | buffer = per_objfile->per_bfd->ranges.buffer + offset; |
43039443 | 14498 | |
b3b3bada | 14499 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 14500 | |
43039443 JK |
14501 | while (1) |
14502 | { | |
14503 | CORE_ADDR range_beginning, range_end; | |
14504 | ||
c8a7a66f | 14505 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 14506 | buffer += addr_size; |
c8a7a66f | 14507 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
14508 | buffer += addr_size; |
14509 | offset += 2 * addr_size; | |
14510 | ||
14511 | /* An end of list marker is a pair of zero addresses. */ | |
14512 | if (range_beginning == 0 && range_end == 0) | |
14513 | /* Found the end of list entry. */ | |
14514 | break; | |
14515 | ||
14516 | /* Each base address selection entry is a pair of 2 values. | |
14517 | The first is the largest possible address, the second is | |
14518 | the base address. Check for a base address here. */ | |
14519 | if ((range_beginning & mask) == mask) | |
14520 | { | |
28d2bfb9 AB |
14521 | /* If we found the largest possible address, then we already |
14522 | have the base address in range_end. */ | |
14523 | base = range_end; | |
43039443 JK |
14524 | continue; |
14525 | } | |
14526 | ||
2b24b6e4 | 14527 | if (!base.has_value ()) |
43039443 JK |
14528 | { |
14529 | /* We have no valid base address for the ranges | |
14530 | data. */ | |
b98664d3 | 14531 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14532 | return 0; |
14533 | } | |
14534 | ||
9277c30c UW |
14535 | if (range_beginning > range_end) |
14536 | { | |
14537 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14538 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14539 | return 0; |
14540 | } | |
14541 | ||
14542 | /* Empty range entries have no effect. */ | |
14543 | if (range_beginning == range_end) | |
14544 | continue; | |
14545 | ||
2b24b6e4 TT |
14546 | range_beginning += *base; |
14547 | range_end += *base; | |
43039443 | 14548 | |
01093045 DE |
14549 | /* A not-uncommon case of bad debug info. |
14550 | Don't pollute the addrmap with bad data. */ | |
14551 | if (range_beginning + baseaddr == 0 | |
5e22e966 | 14552 | && !per_objfile->per_bfd->has_section_at_zero) |
01093045 | 14553 | { |
b98664d3 | 14554 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14555 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14556 | continue; |
14557 | } | |
14558 | ||
5f46c5a5 JK |
14559 | callback (range_beginning, range_end); |
14560 | } | |
14561 | ||
14562 | return 1; | |
14563 | } | |
14564 | ||
14565 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14566 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
efd7398e | 14567 | If RANGES_PST is not NULL we should set up the `psymtabs_addrmap'. */ |
5f46c5a5 JK |
14568 | |
14569 | static int | |
14570 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14571 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
d0ce17d8 | 14572 | dwarf2_psymtab *ranges_pst, dwarf_tag tag) |
5f46c5a5 | 14573 | { |
5e22e966 | 14574 | struct objfile *objfile = cu->per_objfile->objfile; |
84685904 | 14575 | dwarf2_per_bfd *per_bfd = cu->per_objfile->per_bfd; |
08feed99 | 14576 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 14577 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
14578 | int low_set = 0; |
14579 | CORE_ADDR low = 0; | |
14580 | CORE_ADDR high = 0; | |
14581 | int retval; | |
14582 | ||
d0ce17d8 | 14583 | retval = dwarf2_ranges_process (offset, cu, tag, |
5f46c5a5 JK |
14584 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) |
14585 | { | |
9277c30c | 14586 | if (ranges_pst != NULL) |
3e29f34a MR |
14587 | { |
14588 | CORE_ADDR lowpc; | |
14589 | CORE_ADDR highpc; | |
14590 | ||
79748972 TT |
14591 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14592 | range_beginning + baseaddr) | |
14593 | - baseaddr); | |
14594 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14595 | range_end + baseaddr) | |
14596 | - baseaddr); | |
84685904 | 14597 | addrmap_set_empty (per_bfd->partial_symtabs->psymtabs_addrmap, |
d320c2b5 | 14598 | lowpc, highpc - 1, ranges_pst); |
3e29f34a | 14599 | } |
ff013f42 | 14600 | |
43039443 JK |
14601 | /* FIXME: This is recording everything as a low-high |
14602 | segment of consecutive addresses. We should have a | |
14603 | data structure for discontiguous block ranges | |
14604 | instead. */ | |
14605 | if (! low_set) | |
14606 | { | |
14607 | low = range_beginning; | |
14608 | high = range_end; | |
14609 | low_set = 1; | |
14610 | } | |
14611 | else | |
14612 | { | |
14613 | if (range_beginning < low) | |
14614 | low = range_beginning; | |
14615 | if (range_end > high) | |
14616 | high = range_end; | |
14617 | } | |
5f46c5a5 JK |
14618 | }); |
14619 | if (!retval) | |
14620 | return 0; | |
43039443 JK |
14621 | |
14622 | if (! low_set) | |
14623 | /* If the first entry is an end-of-list marker, the range | |
14624 | describes an empty scope, i.e. no instructions. */ | |
14625 | return 0; | |
14626 | ||
14627 | if (low_return) | |
14628 | *low_return = low; | |
14629 | if (high_return) | |
14630 | *high_return = high; | |
14631 | return 1; | |
14632 | } | |
14633 | ||
3a2b436a JK |
14634 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14635 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14636 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14637 | |
3a2b436a | 14638 | static enum pc_bounds_kind |
af34e669 | 14639 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 14640 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 14641 | dwarf2_psymtab *pst) |
c906108c | 14642 | { |
976ca316 | 14643 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
c906108c | 14644 | struct attribute *attr; |
91da1414 | 14645 | struct attribute *attr_high; |
af34e669 DJ |
14646 | CORE_ADDR low = 0; |
14647 | CORE_ADDR high = 0; | |
e385593e | 14648 | enum pc_bounds_kind ret; |
c906108c | 14649 | |
91da1414 MW |
14650 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14651 | if (attr_high) | |
af34e669 | 14652 | { |
e142c38c | 14653 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14654 | if (attr != nullptr) |
dda83cd7 | 14655 | { |
95f982e5 TT |
14656 | low = attr->as_address (); |
14657 | high = attr_high->as_address (); | |
cd6c91b4 | 14658 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14659 | high += low; |
91da1414 | 14660 | } |
af34e669 DJ |
14661 | else |
14662 | /* Found high w/o low attribute. */ | |
e385593e | 14663 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14664 | |
14665 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14666 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14667 | } |
c906108c | 14668 | else |
af34e669 | 14669 | { |
e142c38c | 14670 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
529908cb | 14671 | if (attr != nullptr && attr->form_is_unsigned ()) |
af34e669 | 14672 | { |
2b0c7f41 SM |
14673 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
14674 | on DWARF version). */ | |
14675 | ULONGEST ranges_offset = attr->as_unsigned (); | |
14676 | ||
14677 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add | |
14678 | this value. */ | |
14679 | if (die->tag != DW_TAG_compile_unit) | |
14680 | ranges_offset += cu->gnu_ranges_base; | |
2e3cf129 | 14681 | |
af34e669 | 14682 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14683 | .debug_ranges section. */ |
d0ce17d8 CT |
14684 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst, |
14685 | die->tag)) | |
e385593e | 14686 | return PC_BOUNDS_INVALID; |
43039443 | 14687 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14688 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14689 | } |
e385593e JK |
14690 | else |
14691 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14692 | } |
c906108c | 14693 | |
48fbe735 | 14694 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14695 | if (high <= low) |
e385593e | 14696 | return PC_BOUNDS_INVALID; |
c906108c SS |
14697 | |
14698 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14699 | eliminate duplicate copies of functions and vtables and such. | |
14700 | The linker will arbitrarily choose one and discard the others. | |
14701 | The AT_*_pc values for such functions refer to local labels in | |
14702 | these sections. If the section from that file was discarded, the | |
14703 | labels are not in the output, so the relocs get a value of 0. | |
14704 | If this is a discarded function, mark the pc bounds as invalid, | |
14705 | so that GDB will ignore it. */ | |
976ca316 | 14706 | if (low == 0 && !per_objfile->per_bfd->has_section_at_zero) |
e385593e | 14707 | return PC_BOUNDS_INVALID; |
c906108c SS |
14708 | |
14709 | *lowpc = low; | |
96408a79 SA |
14710 | if (highpc) |
14711 | *highpc = high; | |
af34e669 | 14712 | return ret; |
c906108c SS |
14713 | } |
14714 | ||
b084d499 JB |
14715 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14716 | its low and high PC addresses. Do nothing if these addresses could not | |
14717 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14718 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14719 | ||
14720 | static void | |
14721 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
dda83cd7 SM |
14722 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
14723 | struct dwarf2_cu *cu) | |
b084d499 JB |
14724 | { |
14725 | CORE_ADDR low, high; | |
14726 | struct die_info *child = die->child; | |
14727 | ||
e385593e | 14728 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14729 | { |
325fac50 PA |
14730 | *lowpc = std::min (*lowpc, low); |
14731 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14732 | } |
14733 | ||
14734 | /* If the language does not allow nested subprograms (either inside | |
14735 | subprograms or lexical blocks), we're done. */ | |
14736 | if (cu->language != language_ada) | |
14737 | return; | |
6e70227d | 14738 | |
b084d499 JB |
14739 | /* Check all the children of the given DIE. If it contains nested |
14740 | subprograms, then check their pc bounds. Likewise, we need to | |
14741 | check lexical blocks as well, as they may also contain subprogram | |
14742 | definitions. */ | |
14743 | while (child && child->tag) | |
14744 | { | |
14745 | if (child->tag == DW_TAG_subprogram | |
dda83cd7 SM |
14746 | || child->tag == DW_TAG_lexical_block) |
14747 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 14748 | child = child->sibling; |
b084d499 JB |
14749 | } |
14750 | } | |
14751 | ||
fae299cd DC |
14752 | /* Get the low and high pc's represented by the scope DIE, and store |
14753 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14754 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14755 | ||
14756 | static void | |
14757 | get_scope_pc_bounds (struct die_info *die, | |
14758 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14759 | struct dwarf2_cu *cu) | |
14760 | { | |
14761 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14762 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14763 | CORE_ADDR current_low, current_high; | |
14764 | ||
3a2b436a | 14765 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14766 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14767 | { |
14768 | best_low = current_low; | |
14769 | best_high = current_high; | |
14770 | } | |
14771 | else | |
14772 | { | |
14773 | struct die_info *child = die->child; | |
14774 | ||
14775 | while (child && child->tag) | |
14776 | { | |
14777 | switch (child->tag) { | |
14778 | case DW_TAG_subprogram: | |
dda83cd7 | 14779 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14780 | break; |
14781 | case DW_TAG_namespace: | |
f55ee35c | 14782 | case DW_TAG_module: |
fae299cd DC |
14783 | /* FIXME: carlton/2004-01-16: Should we do this for |
14784 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14785 | that current GCC's always emit the DIEs corresponding | |
14786 | to definitions of methods of classes as children of a | |
14787 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14788 | the DIEs giving the declarations, which could be | |
14789 | anywhere). But I don't see any reason why the | |
14790 | standards says that they have to be there. */ | |
14791 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14792 | ||
14793 | if (current_low != ((CORE_ADDR) -1)) | |
14794 | { | |
325fac50 PA |
14795 | best_low = std::min (best_low, current_low); |
14796 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14797 | } |
14798 | break; | |
14799 | default: | |
0963b4bd | 14800 | /* Ignore. */ |
fae299cd DC |
14801 | break; |
14802 | } | |
14803 | ||
436c571c | 14804 | child = child->sibling; |
fae299cd DC |
14805 | } |
14806 | } | |
14807 | ||
14808 | *lowpc = best_low; | |
14809 | *highpc = best_high; | |
14810 | } | |
14811 | ||
801e3a5b JB |
14812 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14813 | in DIE. */ | |
380bca97 | 14814 | |
801e3a5b JB |
14815 | static void |
14816 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
dda83cd7 | 14817 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) |
801e3a5b | 14818 | { |
5e22e966 | 14819 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14820 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14821 | struct attribute *attr; |
91da1414 | 14822 | struct attribute *attr_high; |
801e3a5b | 14823 | |
91da1414 MW |
14824 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14825 | if (attr_high) | |
801e3a5b | 14826 | { |
801e3a5b | 14827 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14828 | if (attr != nullptr) |
dda83cd7 | 14829 | { |
95f982e5 TT |
14830 | CORE_ADDR low = attr->as_address (); |
14831 | CORE_ADDR high = attr_high->as_address (); | |
31aa7e4e | 14832 | |
cd6c91b4 | 14833 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14834 | high += low; |
9a619af0 | 14835 | |
3e29f34a MR |
14836 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14837 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14838 | cu->get_builder ()->record_block_range (block, low, high - 1); |
dda83cd7 | 14839 | } |
801e3a5b JB |
14840 | } |
14841 | ||
14842 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
529908cb | 14843 | if (attr != nullptr && attr->form_is_unsigned ()) |
801e3a5b | 14844 | { |
2b0c7f41 SM |
14845 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
14846 | on DWARF version). */ | |
14847 | ULONGEST ranges_offset = attr->as_unsigned (); | |
801e3a5b | 14848 | |
2b0c7f41 SM |
14849 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add |
14850 | this value. */ | |
14851 | if (die->tag != DW_TAG_compile_unit) | |
14852 | ranges_offset += cu->gnu_ranges_base; | |
801e3a5b | 14853 | |
2d5f09ec | 14854 | std::vector<blockrange> blockvec; |
2b0c7f41 | 14855 | dwarf2_ranges_process (ranges_offset, cu, die->tag, |
5f46c5a5 JK |
14856 | [&] (CORE_ADDR start, CORE_ADDR end) |
14857 | { | |
58fdfd2c JK |
14858 | start += baseaddr; |
14859 | end += baseaddr; | |
5f46c5a5 JK |
14860 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14861 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14862 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14863 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14864 | }); |
2d5f09ec KB |
14865 | |
14866 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14867 | } |
14868 | } | |
14869 | ||
685b1105 JK |
14870 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14871 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14872 | |
685b1105 JK |
14873 | static void |
14874 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14875 | { |
38360086 | 14876 | int major, minor; |
60d5a603 JK |
14877 | |
14878 | if (cu->producer == NULL) | |
14879 | { | |
14880 | /* For unknown compilers expect their behavior is DWARF version | |
14881 | compliant. | |
14882 | ||
14883 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14884 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14885 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14886 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14887 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14888 | } |
b1ffba5a | 14889 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14890 | { |
38360086 MW |
14891 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14892 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14893 | } |
5230b05a | 14894 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14895 | { |
14896 | cu->producer_is_icc = true; | |
14897 | cu->producer_is_icc_lt_14 = major < 14; | |
14898 | } | |
c258c396 JD |
14899 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14900 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14901 | else |
14902 | { | |
14903 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14904 | compliant. */ | |
60d5a603 JK |
14905 | } |
14906 | ||
9068261f | 14907 | cu->checked_producer = true; |
685b1105 | 14908 | } |
ba919b58 | 14909 | |
685b1105 JK |
14910 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14911 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14912 | during 4.6.0 experimental. */ | |
14913 | ||
9068261f | 14914 | static bool |
685b1105 JK |
14915 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14916 | { | |
14917 | if (!cu->checked_producer) | |
14918 | check_producer (cu); | |
14919 | ||
14920 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14921 | } |
14922 | ||
c258c396 JD |
14923 | |
14924 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14925 | with incorrect is_stmt attributes. */ | |
14926 | ||
14927 | static bool | |
14928 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14929 | { | |
14930 | if (!cu->checked_producer) | |
14931 | check_producer (cu); | |
14932 | ||
14933 | return cu->producer_is_codewarrior; | |
14934 | } | |
14935 | ||
bf23a268 TT |
14936 | /* Return the accessibility of DIE, as given by DW_AT_accessibility. |
14937 | If that attribute is not available, return the appropriate | |
14938 | default. */ | |
60d5a603 JK |
14939 | |
14940 | static enum dwarf_access_attribute | |
bf23a268 | 14941 | dwarf2_access_attribute (struct die_info *die, struct dwarf2_cu *cu) |
60d5a603 | 14942 | { |
bf23a268 TT |
14943 | attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
14944 | if (attr != nullptr) | |
14945 | { | |
14946 | LONGEST value = attr->constant_value (-1); | |
14947 | if (value == DW_ACCESS_public | |
14948 | || value == DW_ACCESS_protected | |
14949 | || value == DW_ACCESS_private) | |
14950 | return (dwarf_access_attribute) value; | |
14951 | complaint (_("Unhandled DW_AT_accessibility value (%s)"), | |
14952 | plongest (value)); | |
14953 | } | |
14954 | ||
60d5a603 JK |
14955 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) |
14956 | { | |
14957 | /* The default DWARF 2 accessibility for members is public, the default | |
14958 | accessibility for inheritance is private. */ | |
14959 | ||
14960 | if (die->tag != DW_TAG_inheritance) | |
14961 | return DW_ACCESS_public; | |
14962 | else | |
14963 | return DW_ACCESS_private; | |
14964 | } | |
14965 | else | |
14966 | { | |
14967 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14968 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14969 | depends on the container kind. */ | |
14970 | ||
14971 | if (die->parent->tag == DW_TAG_class_type) | |
14972 | return DW_ACCESS_private; | |
14973 | else | |
14974 | return DW_ACCESS_public; | |
14975 | } | |
14976 | } | |
14977 | ||
74ac6d43 TT |
14978 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14979 | offset. If the attribute was not found return 0, otherwise return | |
14980 | 1. If it was found but could not properly be handled, set *OFFSET | |
14981 | to 0. */ | |
14982 | ||
14983 | static int | |
14984 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14985 | LONGEST *offset) | |
14986 | { | |
14987 | struct attribute *attr; | |
14988 | ||
14989 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14990 | if (attr != NULL) | |
14991 | { | |
14992 | *offset = 0; | |
14993 | ||
14994 | /* Note that we do not check for a section offset first here. | |
14995 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14996 | so if we see it, we can assume that a constant form is really | |
14997 | a constant and not a section offset. */ | |
cd6c91b4 | 14998 | if (attr->form_is_constant ()) |
0826b30a | 14999 | *offset = attr->constant_value (0); |
cd6c91b4 | 15000 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 15001 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 15002 | else if (attr->form_is_block ()) |
9d2246fc | 15003 | *offset = decode_locdesc (attr->as_block (), cu); |
74ac6d43 TT |
15004 | else |
15005 | dwarf2_complex_location_expr_complaint (); | |
15006 | ||
15007 | return 1; | |
15008 | } | |
15009 | ||
15010 | return 0; | |
15011 | } | |
15012 | ||
7d79de9a TT |
15013 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
15014 | ||
15015 | static void | |
15016 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
15017 | struct field *field) | |
15018 | { | |
15019 | struct attribute *attr; | |
15020 | ||
15021 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
15022 | if (attr != NULL) | |
15023 | { | |
15024 | if (attr->form_is_constant ()) | |
15025 | { | |
15026 | LONGEST offset = attr->constant_value (0); | |
15027 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
15028 | } | |
15029 | else if (attr->form_is_section_offset ()) | |
15030 | dwarf2_complex_location_expr_complaint (); | |
15031 | else if (attr->form_is_block ()) | |
15032 | { | |
15033 | bool handled; | |
9d2246fc | 15034 | CORE_ADDR offset = decode_locdesc (attr->as_block (), cu, &handled); |
7d79de9a TT |
15035 | if (handled) |
15036 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
15037 | else | |
15038 | { | |
5e22e966 SM |
15039 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
15040 | struct objfile *objfile = per_objfile->objfile; | |
7d79de9a TT |
15041 | struct dwarf2_locexpr_baton *dlbaton |
15042 | = XOBNEW (&objfile->objfile_obstack, | |
15043 | struct dwarf2_locexpr_baton); | |
9d2246fc TT |
15044 | dlbaton->data = attr->as_block ()->data; |
15045 | dlbaton->size = attr->as_block ()->size; | |
7d79de9a TT |
15046 | /* When using this baton, we want to compute the address |
15047 | of the field, not the value. This is why | |
15048 | is_reference is set to false here. */ | |
15049 | dlbaton->is_reference = false; | |
5e22e966 | 15050 | dlbaton->per_objfile = per_objfile; |
7d79de9a TT |
15051 | dlbaton->per_cu = cu->per_cu; |
15052 | ||
15053 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
15054 | } | |
15055 | } | |
15056 | else | |
15057 | dwarf2_complex_location_expr_complaint (); | |
15058 | } | |
15059 | } | |
15060 | ||
c906108c SS |
15061 | /* Add an aggregate field to the field list. */ |
15062 | ||
15063 | static void | |
107d2387 | 15064 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15065 | struct dwarf2_cu *cu) |
6e70227d | 15066 | { |
5e22e966 | 15067 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 15068 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
15069 | struct nextfield *new_field; |
15070 | struct attribute *attr; | |
15071 | struct field *fp; | |
15d034d0 | 15072 | const char *fieldname = ""; |
c906108c | 15073 | |
7d0ccb61 DJ |
15074 | if (die->tag == DW_TAG_inheritance) |
15075 | { | |
be2daae6 TT |
15076 | fip->baseclasses.emplace_back (); |
15077 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
15078 | } |
15079 | else | |
15080 | { | |
be2daae6 TT |
15081 | fip->fields.emplace_back (); |
15082 | new_field = &fip->fields.back (); | |
7d0ccb61 | 15083 | } |
be2daae6 | 15084 | |
9c6a1327 TT |
15085 | new_field->offset = die->sect_off; |
15086 | ||
bf23a268 | 15087 | new_field->accessibility = dwarf2_access_attribute (die, cu); |
c906108c | 15088 | if (new_field->accessibility != DW_ACCESS_public) |
264fc0e2 | 15089 | fip->non_public_fields = true; |
60d5a603 | 15090 | |
e142c38c | 15091 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 15092 | if (attr != nullptr) |
23dca5c3 | 15093 | new_field->virtuality = attr->as_virtuality (); |
60d5a603 JK |
15094 | else |
15095 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15096 | |
15097 | fp = &new_field->field; | |
a9a9bd0f | 15098 | |
e142c38c | 15099 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15100 | { |
a9a9bd0f | 15101 | /* Data member other than a C++ static data member. */ |
6e70227d | 15102 | |
c906108c | 15103 | /* Get type of field. */ |
5d14b6e5 | 15104 | fp->set_type (die_type (die, cu)); |
c906108c | 15105 | |
d6a843b5 | 15106 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15107 | |
c906108c | 15108 | /* Get bit size of field (zero if none). */ |
e142c38c | 15109 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 15110 | if (attr != nullptr) |
c906108c | 15111 | { |
529908cb | 15112 | FIELD_BITSIZE (*fp) = attr->constant_value (0); |
c906108c SS |
15113 | } |
15114 | else | |
15115 | { | |
15116 | FIELD_BITSIZE (*fp) = 0; | |
15117 | } | |
15118 | ||
15119 | /* Get bit offset of field. */ | |
7d79de9a | 15120 | handle_data_member_location (die, cu, fp); |
e142c38c | 15121 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
7c184d33 | 15122 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c | 15123 | { |
d5a22e77 | 15124 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
15125 | { |
15126 | /* For big endian bits, the DW_AT_bit_offset gives the | |
dda83cd7 SM |
15127 | additional bit offset from the MSB of the containing |
15128 | anonymous object to the MSB of the field. We don't | |
15129 | have to do anything special since we don't need to | |
15130 | know the size of the anonymous object. */ | |
529908cb | 15131 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) |
7c184d33 | 15132 | + attr->constant_value (0))); |
c906108c SS |
15133 | } |
15134 | else | |
15135 | { | |
15136 | /* For little endian bits, compute the bit offset to the | |
dda83cd7 SM |
15137 | MSB of the anonymous object, subtract off the number of |
15138 | bits from the MSB of the field to the MSB of the | |
15139 | object, and then subtract off the number of bits of | |
15140 | the field itself. The result is the bit offset of | |
15141 | the LSB of the field. */ | |
c906108c | 15142 | int anonymous_size; |
7c184d33 | 15143 | int bit_offset = attr->constant_value (0); |
c906108c | 15144 | |
e142c38c | 15145 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
7c184d33 | 15146 | if (attr != nullptr && attr->form_is_constant ()) |
c906108c SS |
15147 | { |
15148 | /* The size of the anonymous object containing | |
15149 | the bit field is explicit, so use the | |
15150 | indicated size (in bytes). */ | |
7c184d33 | 15151 | anonymous_size = attr->constant_value (0); |
c906108c SS |
15152 | } |
15153 | else | |
15154 | { | |
15155 | /* The size of the anonymous object containing | |
15156 | the bit field must be inferred from the type | |
15157 | attribute of the data member containing the | |
15158 | bit field. */ | |
5d14b6e5 | 15159 | anonymous_size = TYPE_LENGTH (fp->type ()); |
c906108c | 15160 | } |
f41f5e61 PA |
15161 | SET_FIELD_BITPOS (*fp, |
15162 | (FIELD_BITPOS (*fp) | |
15163 | + anonymous_size * bits_per_byte | |
15164 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15165 | } |
15166 | } | |
da5b30da AA |
15167 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15168 | if (attr != NULL) | |
15169 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 15170 | + attr->constant_value (0))); |
c906108c SS |
15171 | |
15172 | /* Get name of field. */ | |
39cbfefa DJ |
15173 | fieldname = dwarf2_name (die, cu); |
15174 | if (fieldname == NULL) | |
15175 | fieldname = ""; | |
d8151005 DJ |
15176 | |
15177 | /* The name is already allocated along with this objfile, so we don't | |
15178 | need to duplicate it for the type. */ | |
15179 | fp->name = fieldname; | |
c906108c SS |
15180 | |
15181 | /* Change accessibility for artificial fields (e.g. virtual table | |
dda83cd7 | 15182 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15183 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15184 | { |
d48cc9dd | 15185 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c | 15186 | new_field->accessibility = DW_ACCESS_private; |
264fc0e2 | 15187 | fip->non_public_fields = true; |
c906108c SS |
15188 | } |
15189 | } | |
a9a9bd0f | 15190 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15191 | { |
a9a9bd0f DC |
15192 | /* C++ static member. */ |
15193 | ||
15194 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15195 | is a declaration, but all versions of G++ as of this writing | |
15196 | (so through at least 3.2.1) incorrectly generate | |
15197 | DW_TAG_variable tags. */ | |
6e70227d | 15198 | |
ff355380 | 15199 | const char *physname; |
c906108c | 15200 | |
a9a9bd0f | 15201 | /* Get name of field. */ |
39cbfefa DJ |
15202 | fieldname = dwarf2_name (die, cu); |
15203 | if (fieldname == NULL) | |
c906108c SS |
15204 | return; |
15205 | ||
254e6b9e | 15206 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15207 | if (attr |
15208 | /* Only create a symbol if this is an external value. | |
15209 | new_symbol checks this and puts the value in the global symbol | |
15210 | table, which we want. If it is not external, new_symbol | |
15211 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15212 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15213 | { |
15214 | /* A static const member, not much different than an enum as far as | |
15215 | we're concerned, except that we can support more types. */ | |
15216 | new_symbol (die, NULL, cu); | |
15217 | } | |
15218 | ||
2df3850c | 15219 | /* Get physical name. */ |
ff355380 | 15220 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15221 | |
d8151005 DJ |
15222 | /* The name is already allocated along with this objfile, so we don't |
15223 | need to duplicate it for the type. */ | |
15224 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
5d14b6e5 | 15225 | fp->set_type (die_type (die, cu)); |
d8151005 | 15226 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15227 | } |
15228 | else if (die->tag == DW_TAG_inheritance) | |
15229 | { | |
74ac6d43 | 15230 | /* C++ base class field. */ |
7d79de9a | 15231 | handle_data_member_location (die, cu, fp); |
c906108c | 15232 | FIELD_BITSIZE (*fp) = 0; |
5d14b6e5 SM |
15233 | fp->set_type (die_type (die, cu)); |
15234 | FIELD_NAME (*fp) = fp->type ()->name (); | |
c906108c | 15235 | } |
2ddeaf8a TT |
15236 | else |
15237 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15238 | } |
15239 | ||
883fd55a KS |
15240 | /* Can the type given by DIE define another type? */ |
15241 | ||
15242 | static bool | |
15243 | type_can_define_types (const struct die_info *die) | |
15244 | { | |
15245 | switch (die->tag) | |
15246 | { | |
15247 | case DW_TAG_typedef: | |
15248 | case DW_TAG_class_type: | |
15249 | case DW_TAG_structure_type: | |
15250 | case DW_TAG_union_type: | |
15251 | case DW_TAG_enumeration_type: | |
15252 | return true; | |
15253 | ||
15254 | default: | |
15255 | return false; | |
15256 | } | |
15257 | } | |
15258 | ||
15259 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15260 | |
15261 | static void | |
883fd55a KS |
15262 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15263 | struct dwarf2_cu *cu) | |
6e70227d | 15264 | { |
be2daae6 TT |
15265 | struct decl_field fp; |
15266 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15267 | |
883fd55a | 15268 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15269 | |
883fd55a | 15270 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15271 | fp.name = dwarf2_name (die, cu); |
15272 | fp.type = read_type_die (die, cu); | |
98751a41 | 15273 | |
c191a687 | 15274 | /* Save accessibility. */ |
bf23a268 | 15275 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
c191a687 KS |
15276 | switch (accessibility) |
15277 | { | |
15278 | case DW_ACCESS_public: | |
15279 | /* The assumed value if neither private nor protected. */ | |
15280 | break; | |
15281 | case DW_ACCESS_private: | |
be2daae6 | 15282 | fp.is_private = 1; |
c191a687 KS |
15283 | break; |
15284 | case DW_ACCESS_protected: | |
be2daae6 | 15285 | fp.is_protected = 1; |
c191a687 | 15286 | break; |
c191a687 KS |
15287 | } |
15288 | ||
883fd55a | 15289 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15290 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15291 | else |
be2daae6 | 15292 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15293 | } |
15294 | ||
9c6a1327 TT |
15295 | /* A convenience typedef that's used when finding the discriminant |
15296 | field for a variant part. */ | |
1b95cdb7 SM |
15297 | typedef std::unordered_map<sect_offset, int, gdb::hash_enum<sect_offset>> |
15298 | offset_map_type; | |
9c6a1327 TT |
15299 | |
15300 | /* Compute the discriminant range for a given variant. OBSTACK is | |
15301 | where the results will be stored. VARIANT is the variant to | |
15302 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
15303 | or unsigned. */ | |
15304 | ||
15305 | static const gdb::array_view<discriminant_range> | |
15306 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
15307 | bool is_unsigned) | |
15308 | { | |
15309 | std::vector<discriminant_range> ranges; | |
15310 | ||
15311 | if (variant.default_branch) | |
15312 | return {}; | |
15313 | ||
15314 | if (variant.discr_list_data == nullptr) | |
15315 | { | |
15316 | discriminant_range r | |
15317 | = {variant.discriminant_value, variant.discriminant_value}; | |
15318 | ranges.push_back (r); | |
15319 | } | |
15320 | else | |
15321 | { | |
15322 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
15323 | variant.discr_list_data->size); | |
15324 | while (!data.empty ()) | |
15325 | { | |
15326 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
15327 | { | |
15328 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
15329 | break; | |
15330 | } | |
15331 | bool is_range = data[0] == DW_DSC_range; | |
15332 | data = data.slice (1); | |
15333 | ||
15334 | ULONGEST low, high; | |
15335 | unsigned int bytes_read; | |
15336 | ||
15337 | if (data.empty ()) | |
15338 | { | |
15339 | complaint (_("DW_AT_discr_list missing low value")); | |
15340 | break; | |
15341 | } | |
15342 | if (is_unsigned) | |
15343 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
15344 | else | |
15345 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
15346 | &bytes_read); | |
15347 | data = data.slice (bytes_read); | |
15348 | ||
15349 | if (is_range) | |
15350 | { | |
15351 | if (data.empty ()) | |
15352 | { | |
15353 | complaint (_("DW_AT_discr_list missing high value")); | |
15354 | break; | |
15355 | } | |
15356 | if (is_unsigned) | |
15357 | high = read_unsigned_leb128 (nullptr, data.data (), | |
15358 | &bytes_read); | |
15359 | else | |
15360 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
15361 | &bytes_read); | |
15362 | data = data.slice (bytes_read); | |
15363 | } | |
15364 | else | |
15365 | high = low; | |
15366 | ||
15367 | ranges.push_back ({ low, high }); | |
15368 | } | |
15369 | } | |
15370 | ||
15371 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
15372 | ranges.size ()); | |
15373 | std::copy (ranges.begin (), ranges.end (), result); | |
15374 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
15375 | } | |
15376 | ||
15377 | static const gdb::array_view<variant_part> create_variant_parts | |
15378 | (struct obstack *obstack, | |
15379 | const offset_map_type &offset_map, | |
15380 | struct field_info *fi, | |
15381 | const std::vector<variant_part_builder> &variant_parts); | |
15382 | ||
15383 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
15384 | the variant to fill in. OBSTACK is where any needed allocations | |
15385 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
15386 | fields for the type. FI describes the fields of the type we're | |
15387 | processing. FIELD is the variant field we're converting. */ | |
15388 | ||
15389 | static void | |
15390 | create_one_variant (variant &result, struct obstack *obstack, | |
15391 | const offset_map_type &offset_map, | |
15392 | struct field_info *fi, const variant_field &field) | |
15393 | { | |
15394 | result.discriminants = convert_variant_range (obstack, field, false); | |
15395 | result.first_field = field.first_field + fi->baseclasses.size (); | |
15396 | result.last_field = field.last_field + fi->baseclasses.size (); | |
15397 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
15398 | field.variant_parts); | |
15399 | } | |
15400 | ||
15401 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
15402 | is the variant part to fill in. OBSTACK is where any needed | |
15403 | allocations will be done. OFFSET_MAP holds the mapping from | |
15404 | section offsets to fields for the type. FI describes the fields of | |
15405 | the type we're processing. BUILDER is the variant part to be | |
15406 | converted. */ | |
15407 | ||
15408 | static void | |
15409 | create_one_variant_part (variant_part &result, | |
15410 | struct obstack *obstack, | |
15411 | const offset_map_type &offset_map, | |
15412 | struct field_info *fi, | |
15413 | const variant_part_builder &builder) | |
15414 | { | |
15415 | auto iter = offset_map.find (builder.discriminant_offset); | |
15416 | if (iter == offset_map.end ()) | |
15417 | { | |
15418 | result.discriminant_index = -1; | |
15419 | /* Doesn't matter. */ | |
15420 | result.is_unsigned = false; | |
15421 | } | |
15422 | else | |
15423 | { | |
15424 | result.discriminant_index = iter->second; | |
15425 | result.is_unsigned | |
c6d940a9 | 15426 | = fi->fields[result.discriminant_index].field.type ()->is_unsigned (); |
9c6a1327 TT |
15427 | } |
15428 | ||
15429 | size_t n = builder.variants.size (); | |
15430 | variant *output = new (obstack) variant[n]; | |
15431 | for (size_t i = 0; i < n; ++i) | |
15432 | create_one_variant (output[i], obstack, offset_map, fi, | |
15433 | builder.variants[i]); | |
15434 | ||
15435 | result.variants = gdb::array_view<variant> (output, n); | |
15436 | } | |
15437 | ||
15438 | /* Create a vector of variant parts that can be attached to a type. | |
15439 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
15440 | holds the mapping from section offsets to fields for the type. FI | |
15441 | describes the fields of the type we're processing. VARIANT_PARTS | |
15442 | is the vector to convert. */ | |
15443 | ||
15444 | static const gdb::array_view<variant_part> | |
15445 | create_variant_parts (struct obstack *obstack, | |
15446 | const offset_map_type &offset_map, | |
15447 | struct field_info *fi, | |
15448 | const std::vector<variant_part_builder> &variant_parts) | |
15449 | { | |
15450 | if (variant_parts.empty ()) | |
15451 | return {}; | |
15452 | ||
15453 | size_t n = variant_parts.size (); | |
15454 | variant_part *result = new (obstack) variant_part[n]; | |
15455 | for (size_t i = 0; i < n; ++i) | |
15456 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
15457 | variant_parts[i]); | |
15458 | ||
15459 | return gdb::array_view<variant_part> (result, n); | |
15460 | } | |
15461 | ||
15462 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
15463 | done. */ | |
15464 | ||
15465 | static void | |
15466 | add_variant_property (struct field_info *fip, struct type *type, | |
15467 | struct dwarf2_cu *cu) | |
15468 | { | |
15469 | /* Map section offsets of fields to their field index. Note the | |
15470 | field index here does not take the number of baseclasses into | |
15471 | account. */ | |
15472 | offset_map_type offset_map; | |
15473 | for (int i = 0; i < fip->fields.size (); ++i) | |
15474 | offset_map[fip->fields[i].offset] = i; | |
15475 | ||
5e22e966 | 15476 | struct objfile *objfile = cu->per_objfile->objfile; |
9c6a1327 TT |
15477 | gdb::array_view<variant_part> parts |
15478 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
15479 | fip->variant_parts); | |
15480 | ||
15481 | struct dynamic_prop prop; | |
8c2e4e06 SM |
15482 | prop.set_variant_parts ((gdb::array_view<variant_part> *) |
15483 | obstack_copy (&objfile->objfile_obstack, &parts, | |
15484 | sizeof (parts))); | |
9c6a1327 | 15485 | |
5c54719c | 15486 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
9c6a1327 TT |
15487 | } |
15488 | ||
c906108c SS |
15489 | /* Create the vector of fields, and attach it to the type. */ |
15490 | ||
15491 | static void | |
fba45db2 | 15492 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15493 | struct dwarf2_cu *cu) |
c906108c | 15494 | { |
317f7127 | 15495 | int nfields = fip->nfields (); |
c906108c SS |
15496 | |
15497 | /* Record the field count, allocate space for the array of fields, | |
15498 | and create blank accessibility bitfields if necessary. */ | |
5e33d5f4 | 15499 | type->set_num_fields (nfields); |
3cabb6b0 SM |
15500 | type->set_fields |
15501 | ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * nfields)); | |
c906108c | 15502 | |
b4ba55a1 | 15503 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15504 | { |
15505 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15506 | ||
15507 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15508 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15509 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15510 | ||
15511 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15512 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15513 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15514 | ||
774b6a14 TT |
15515 | TYPE_FIELD_IGNORE_BITS (type) = |
15516 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15517 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15518 | } |
15519 | ||
15520 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15521 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15522 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15523 | { |
be2daae6 | 15524 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15525 | unsigned char *pointer; |
c906108c SS |
15526 | |
15527 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15528 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15529 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15530 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15531 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15532 | } |
15533 | ||
9c6a1327 TT |
15534 | if (!fip->variant_parts.empty ()) |
15535 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 15536 | |
be2daae6 TT |
15537 | /* Copy the saved-up fields into the field vector. */ |
15538 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15539 | { |
be2daae6 TT |
15540 | struct nextfield &field |
15541 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15542 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15543 | |
ceacbf6e | 15544 | type->field (i) = field.field; |
be2daae6 | 15545 | switch (field.accessibility) |
c906108c | 15546 | { |
c5aa993b | 15547 | case DW_ACCESS_private: |
b4ba55a1 | 15548 | if (cu->language != language_ada) |
be2daae6 | 15549 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15550 | break; |
c906108c | 15551 | |
c5aa993b | 15552 | case DW_ACCESS_protected: |
b4ba55a1 | 15553 | if (cu->language != language_ada) |
be2daae6 | 15554 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15555 | break; |
c906108c | 15556 | |
c5aa993b JM |
15557 | case DW_ACCESS_public: |
15558 | break; | |
c906108c | 15559 | |
c5aa993b JM |
15560 | default: |
15561 | /* Unknown accessibility. Complain and treat it as public. */ | |
15562 | { | |
b98664d3 | 15563 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15564 | field.accessibility); |
c5aa993b JM |
15565 | } |
15566 | break; | |
c906108c | 15567 | } |
be2daae6 | 15568 | if (i < fip->baseclasses.size ()) |
c906108c | 15569 | { |
be2daae6 | 15570 | switch (field.virtuality) |
c906108c | 15571 | { |
c5aa993b JM |
15572 | case DW_VIRTUALITY_virtual: |
15573 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15574 | if (cu->language == language_ada) |
a73c6dcd | 15575 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15576 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15577 | break; |
c906108c SS |
15578 | } |
15579 | } | |
c906108c SS |
15580 | } |
15581 | } | |
15582 | ||
7d27a96d TT |
15583 | /* Return true if this member function is a constructor, false |
15584 | otherwise. */ | |
15585 | ||
15586 | static int | |
15587 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15588 | { | |
15589 | const char *fieldname; | |
fe978cb0 | 15590 | const char *type_name; |
7d27a96d TT |
15591 | int len; |
15592 | ||
15593 | if (die->parent == NULL) | |
15594 | return 0; | |
15595 | ||
15596 | if (die->parent->tag != DW_TAG_structure_type | |
15597 | && die->parent->tag != DW_TAG_union_type | |
15598 | && die->parent->tag != DW_TAG_class_type) | |
15599 | return 0; | |
15600 | ||
15601 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15602 | type_name = dwarf2_name (die->parent, cu); |
15603 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15604 | return 0; |
15605 | ||
15606 | len = strlen (fieldname); | |
fe978cb0 PA |
15607 | return (strncmp (fieldname, type_name, len) == 0 |
15608 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15609 | } |
15610 | ||
c906108c SS |
15611 | /* Add a member function to the proper fieldlist. */ |
15612 | ||
15613 | static void | |
107d2387 | 15614 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15615 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15616 | { |
5e22e966 | 15617 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 15618 | struct attribute *attr; |
c906108c | 15619 | int i; |
be2daae6 | 15620 | struct fnfieldlist *flp = nullptr; |
c906108c | 15621 | struct fn_field *fnp; |
15d034d0 | 15622 | const char *fieldname; |
f792889a | 15623 | struct type *this_type; |
c906108c | 15624 | |
b4ba55a1 | 15625 | if (cu->language == language_ada) |
a73c6dcd | 15626 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15627 | |
2df3850c | 15628 | /* Get name of member function. */ |
39cbfefa DJ |
15629 | fieldname = dwarf2_name (die, cu); |
15630 | if (fieldname == NULL) | |
2df3850c | 15631 | return; |
c906108c | 15632 | |
c906108c | 15633 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15634 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15635 | { |
27bfe10e | 15636 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15637 | { |
15638 | flp = &fip->fnfieldlists[i]; | |
15639 | break; | |
15640 | } | |
c906108c SS |
15641 | } |
15642 | ||
be2daae6 TT |
15643 | /* Create a new fnfieldlist if necessary. */ |
15644 | if (flp == nullptr) | |
c906108c | 15645 | { |
be2daae6 TT |
15646 | fip->fnfieldlists.emplace_back (); |
15647 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15648 | flp->name = fieldname; |
be2daae6 | 15649 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15650 | } |
15651 | ||
be2daae6 TT |
15652 | /* Create a new member function field and add it to the vector of |
15653 | fnfieldlists. */ | |
15654 | flp->fnfields.emplace_back (); | |
15655 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15656 | |
15657 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15658 | if (cu->language == language_cplus) |
be2daae6 TT |
15659 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15660 | die, cu); | |
3da10d80 KS |
15661 | else |
15662 | { | |
1d06ead6 | 15663 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15664 | fnp->physname = physname ? physname : ""; |
15665 | } | |
15666 | ||
c906108c | 15667 | fnp->type = alloc_type (objfile); |
f792889a | 15668 | this_type = read_type_die (die, cu); |
78134374 | 15669 | if (this_type && this_type->code () == TYPE_CODE_FUNC) |
c906108c | 15670 | { |
1f704f76 | 15671 | int nparams = this_type->num_fields (); |
c906108c | 15672 | |
f792889a | 15673 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15674 | of the method itself (TYPE_CODE_METHOD). */ |
15675 | smash_to_method_type (fnp->type, type, | |
f792889a | 15676 | TYPE_TARGET_TYPE (this_type), |
80fc5e77 | 15677 | this_type->fields (), |
1f704f76 | 15678 | this_type->num_fields (), |
a409645d | 15679 | this_type->has_varargs ()); |
c906108c SS |
15680 | |
15681 | /* Handle static member functions. | |
dda83cd7 SM |
15682 | Dwarf2 has no clean way to discern C++ static and non-static |
15683 | member functions. G++ helps GDB by marking the first | |
15684 | parameter for non-static member functions (which is the this | |
15685 | pointer) as artificial. We obtain this information from | |
15686 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15687 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15688 | fnp->voffset = VOFFSET_STATIC; |
15689 | } | |
15690 | else | |
b98664d3 | 15691 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15692 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15693 | |
15694 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15695 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15696 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15697 | |
3e43a32a MS |
15698 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15699 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15700 | |
15701 | /* Get accessibility. */ | |
bf23a268 | 15702 | dwarf_access_attribute accessibility = dwarf2_access_attribute (die, cu); |
60d5a603 | 15703 | switch (accessibility) |
c906108c | 15704 | { |
60d5a603 JK |
15705 | case DW_ACCESS_private: |
15706 | fnp->is_private = 1; | |
15707 | break; | |
15708 | case DW_ACCESS_protected: | |
15709 | fnp->is_protected = 1; | |
15710 | break; | |
c906108c SS |
15711 | } |
15712 | ||
b02dede2 | 15713 | /* Check for artificial methods. */ |
e142c38c | 15714 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
c45bc3f8 | 15715 | if (attr && attr->as_boolean ()) |
b02dede2 DJ |
15716 | fnp->is_artificial = 1; |
15717 | ||
e35000a7 TBA |
15718 | /* Check for defaulted methods. */ |
15719 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
e8e5c158 TT |
15720 | if (attr != nullptr) |
15721 | fnp->defaulted = attr->defaulted (); | |
e35000a7 TBA |
15722 | |
15723 | /* Check for deleted methods. */ | |
15724 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
c45bc3f8 | 15725 | if (attr != nullptr && attr->as_boolean ()) |
e35000a7 TBA |
15726 | fnp->is_deleted = 1; |
15727 | ||
7d27a96d TT |
15728 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15729 | ||
0d564a31 | 15730 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15731 | function. For older versions of GCC, this is an offset in the |
15732 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15733 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15734 | to the object address. */ |
15735 | ||
e142c38c | 15736 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15737 | if (attr != nullptr) |
8e19ed76 | 15738 | { |
9d2246fc | 15739 | if (attr->form_is_block () && attr->as_block ()->size > 0) |
dda83cd7 | 15740 | { |
9d2246fc TT |
15741 | struct dwarf_block *block = attr->as_block (); |
15742 | ||
15743 | if (block->data[0] == DW_OP_constu) | |
aec5aa8b TT |
15744 | { |
15745 | /* Old-style GCC. */ | |
9d2246fc | 15746 | fnp->voffset = decode_locdesc (block, cu) + 2; |
aec5aa8b | 15747 | } |
9d2246fc TT |
15748 | else if (block->data[0] == DW_OP_deref |
15749 | || (block->size > 1 | |
15750 | && block->data[0] == DW_OP_deref_size | |
15751 | && block->data[1] == cu->header.addr_size)) | |
aec5aa8b | 15752 | { |
9d2246fc | 15753 | fnp->voffset = decode_locdesc (block, cu); |
aec5aa8b TT |
15754 | if ((fnp->voffset % cu->header.addr_size) != 0) |
15755 | dwarf2_complex_location_expr_complaint (); | |
15756 | else | |
15757 | fnp->voffset /= cu->header.addr_size; | |
15758 | fnp->voffset += 2; | |
15759 | } | |
15760 | else | |
15761 | dwarf2_complex_location_expr_complaint (); | |
15762 | ||
15763 | if (!fnp->fcontext) | |
7e993ebf KS |
15764 | { |
15765 | /* If there is no `this' field and no DW_AT_containing_type, | |
15766 | we cannot actually find a base class context for the | |
15767 | vtable! */ | |
1f704f76 | 15768 | if (this_type->num_fields () == 0 |
7e993ebf KS |
15769 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) |
15770 | { | |
b98664d3 | 15771 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15772 | "function \"%s\" (offset %s)"), |
15773 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15774 | } |
15775 | else | |
15776 | { | |
15777 | fnp->fcontext | |
940da03e | 15778 | = TYPE_TARGET_TYPE (this_type->field (0).type ()); |
7e993ebf KS |
15779 | } |
15780 | } | |
aec5aa8b | 15781 | } |
cd6c91b4 | 15782 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 15783 | { |
4d3c2250 | 15784 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 | 15785 | } |
8e19ed76 | 15786 | else |
dda83cd7 | 15787 | { |
4d3c2250 KB |
15788 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15789 | fieldname); | |
dda83cd7 | 15790 | } |
0d564a31 | 15791 | } |
d48cc9dd DJ |
15792 | else |
15793 | { | |
15794 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
23dca5c3 | 15795 | if (attr != nullptr && attr->as_virtuality () != DW_VIRTUALITY_none) |
d48cc9dd DJ |
15796 | { |
15797 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15798 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15799 | "but the vtable offset is not specified"), |
9d8780f0 | 15800 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15801 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15802 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15803 | } | |
15804 | } | |
c906108c SS |
15805 | } |
15806 | ||
15807 | /* Create the vector of member function fields, and attach it to the type. */ | |
15808 | ||
15809 | static void | |
fba45db2 | 15810 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15811 | struct dwarf2_cu *cu) |
c906108c | 15812 | { |
b4ba55a1 | 15813 | if (cu->language == language_ada) |
a73c6dcd | 15814 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15815 | |
c906108c SS |
15816 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15817 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15818 | TYPE_ALLOC (type, |
15819 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15820 | |
be2daae6 | 15821 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15822 | { |
be2daae6 | 15823 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15824 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15825 | |
be2daae6 TT |
15826 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15827 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15828 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15829 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15830 | ||
15831 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15832 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15833 | } |
15834 | ||
be2daae6 | 15835 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15836 | } |
15837 | ||
1168df01 JB |
15838 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15839 | language, zero otherwise. */ | |
15840 | static int | |
15841 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15842 | { | |
15843 | static const char vptr[] = "_vptr"; | |
15844 | ||
9c37b5ae TT |
15845 | /* Look for the C++ form of the vtable. */ |
15846 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15847 | return 1; |
15848 | ||
15849 | return 0; | |
15850 | } | |
15851 | ||
c0dd20ea | 15852 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15853 | functions, with the ABI-specified layout. If TYPE describes |
15854 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15855 | |
15856 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15857 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15858 | |
0b92b5bb TT |
15859 | static void |
15860 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15861 | { |
09e2d7c7 | 15862 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15863 | |
15864 | /* Check for a structure with no name and two children. */ | |
1f704f76 | 15865 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) |
0b92b5bb | 15866 | return; |
c0dd20ea DJ |
15867 | |
15868 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15869 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15870 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15871 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15872 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15873 | return; | |
c0dd20ea DJ |
15874 | |
15875 | /* Find the type of the method. */ | |
940da03e | 15876 | pfn_type = type->field (0).type (); |
c0dd20ea | 15877 | if (pfn_type == NULL |
78134374 SM |
15878 | || pfn_type->code () != TYPE_CODE_PTR |
15879 | || TYPE_TARGET_TYPE (pfn_type)->code () != TYPE_CODE_FUNC) | |
0b92b5bb | 15880 | return; |
c0dd20ea DJ |
15881 | |
15882 | /* Look for the "this" argument. */ | |
15883 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
1f704f76 | 15884 | if (pfn_type->num_fields () == 0 |
940da03e SM |
15885 | /* || pfn_type->field (0).type () == NULL */ |
15886 | || pfn_type->field (0).type ()->code () != TYPE_CODE_PTR) | |
0b92b5bb | 15887 | return; |
c0dd20ea | 15888 | |
940da03e | 15889 | self_type = TYPE_TARGET_TYPE (pfn_type->field (0).type ()); |
0b92b5bb | 15890 | new_type = alloc_type (objfile); |
09e2d7c7 | 15891 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
80fc5e77 | 15892 | pfn_type->fields (), pfn_type->num_fields (), |
a409645d | 15893 | pfn_type->has_varargs ()); |
0b92b5bb | 15894 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15895 | } |
1168df01 | 15896 | |
e26624c6 TT |
15897 | /* Helper for quirk_ada_thick_pointer. If TYPE is an array type that |
15898 | requires rewriting, then copy it and return the updated copy. | |
15899 | Otherwise return nullptr. */ | |
15900 | ||
15901 | static struct type * | |
15902 | rewrite_array_type (struct type *type) | |
15903 | { | |
15904 | if (type->code () != TYPE_CODE_ARRAY) | |
15905 | return nullptr; | |
15906 | ||
15907 | struct type *index_type = type->index_type (); | |
15908 | range_bounds *current_bounds = index_type->bounds (); | |
15909 | ||
15910 | /* Handle multi-dimensional arrays. */ | |
15911 | struct type *new_target = rewrite_array_type (TYPE_TARGET_TYPE (type)); | |
15912 | if (new_target == nullptr) | |
15913 | { | |
15914 | /* Maybe we don't need to rewrite this array. */ | |
15915 | if (current_bounds->low.kind () == PROP_CONST | |
15916 | && current_bounds->high.kind () == PROP_CONST) | |
15917 | return nullptr; | |
15918 | } | |
15919 | ||
15920 | /* Either the target type was rewritten, or the bounds have to be | |
15921 | updated. Either way we want to copy the type and update | |
15922 | everything. */ | |
15923 | struct type *copy = copy_type (type); | |
15924 | int nfields = copy->num_fields (); | |
15925 | field *new_fields | |
15926 | = ((struct field *) TYPE_ZALLOC (copy, | |
15927 | nfields * sizeof (struct field))); | |
15928 | memcpy (new_fields, copy->fields (), nfields * sizeof (struct field)); | |
15929 | copy->set_fields (new_fields); | |
15930 | if (new_target != nullptr) | |
15931 | TYPE_TARGET_TYPE (copy) = new_target; | |
15932 | ||
15933 | struct type *index_copy = copy_type (index_type); | |
15934 | range_bounds *bounds | |
15935 | = (struct range_bounds *) TYPE_ZALLOC (index_copy, | |
15936 | sizeof (range_bounds)); | |
15937 | *bounds = *current_bounds; | |
15938 | bounds->low.set_const_val (1); | |
15939 | bounds->high.set_const_val (0); | |
15940 | index_copy->set_bounds (bounds); | |
15941 | copy->set_index_type (index_copy); | |
15942 | ||
15943 | return copy; | |
15944 | } | |
15945 | ||
57567375 TT |
15946 | /* While some versions of GCC will generate complicated DWARF for an |
15947 | array (see quirk_ada_thick_pointer), more recent versions were | |
15948 | modified to emit an explicit thick pointer structure. However, in | |
15949 | this case, the array still has DWARF expressions for its ranges, | |
15950 | and these must be ignored. */ | |
15951 | ||
15952 | static void | |
15953 | quirk_ada_thick_pointer_struct (struct die_info *die, struct dwarf2_cu *cu, | |
15954 | struct type *type) | |
15955 | { | |
15956 | gdb_assert (cu->language == language_ada); | |
15957 | ||
15958 | /* Check for a structure with two children. */ | |
15959 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) | |
15960 | return; | |
15961 | ||
15962 | /* Check for P_ARRAY and P_BOUNDS members. */ | |
15963 | if (TYPE_FIELD_NAME (type, 0) == NULL | |
15964 | || strcmp (TYPE_FIELD_NAME (type, 0), "P_ARRAY") != 0 | |
15965 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15966 | || strcmp (TYPE_FIELD_NAME (type, 1), "P_BOUNDS") != 0) | |
15967 | return; | |
15968 | ||
15969 | /* Make sure we're looking at a pointer to an array. */ | |
15970 | if (type->field (0).type ()->code () != TYPE_CODE_PTR) | |
15971 | return; | |
57567375 | 15972 | |
e26624c6 TT |
15973 | /* The Ada code already knows how to handle these types, so all that |
15974 | we need to do is turn the bounds into static bounds. However, we | |
15975 | don't want to rewrite existing array or index types in-place, | |
15976 | because those may be referenced in other contexts where this | |
15977 | rewriting is undesirable. */ | |
15978 | struct type *new_ary_type | |
15979 | = rewrite_array_type (TYPE_TARGET_TYPE (type->field (0).type ())); | |
15980 | if (new_ary_type != nullptr) | |
15981 | type->field (0).set_type (lookup_pointer_type (new_ary_type)); | |
57567375 TT |
15982 | } |
15983 | ||
2b4424c3 TT |
15984 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15985 | appropriate error checking and issuing complaints if there is a | |
15986 | problem. */ | |
15987 | ||
15988 | static ULONGEST | |
15989 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15990 | { | |
15991 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15992 | ||
15993 | if (attr == nullptr) | |
15994 | return 0; | |
15995 | ||
cd6c91b4 | 15996 | if (!attr->form_is_constant ()) |
2b4424c3 | 15997 | { |
b98664d3 | 15998 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15999 | " - DIE at %s [in module %s]"), |
16000 | sect_offset_str (die->sect_off), | |
5e22e966 | 16001 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
16002 | return 0; |
16003 | } | |
16004 | ||
529908cb TT |
16005 | LONGEST val = attr->constant_value (0); |
16006 | if (val < 0) | |
2b4424c3 | 16007 | { |
529908cb TT |
16008 | complaint (_("DW_AT_alignment value must not be negative" |
16009 | " - DIE at %s [in module %s]"), | |
16010 | sect_offset_str (die->sect_off), | |
16011 | objfile_name (cu->per_objfile->objfile)); | |
16012 | return 0; | |
2b4424c3 | 16013 | } |
529908cb | 16014 | ULONGEST align = val; |
2b4424c3 TT |
16015 | |
16016 | if (align == 0) | |
16017 | { | |
b98664d3 | 16018 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
16019 | " - DIE at %s [in module %s]"), |
16020 | sect_offset_str (die->sect_off), | |
5e22e966 | 16021 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
16022 | return 0; |
16023 | } | |
16024 | if ((align & (align - 1)) != 0) | |
16025 | { | |
b98664d3 | 16026 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
16027 | " - DIE at %s [in module %s]"), |
16028 | sect_offset_str (die->sect_off), | |
5e22e966 | 16029 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
16030 | return 0; |
16031 | } | |
16032 | ||
16033 | return align; | |
16034 | } | |
16035 | ||
16036 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
16037 | the alignment for TYPE. */ | |
16038 | ||
16039 | static void | |
16040 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
16041 | struct type *type) | |
16042 | { | |
16043 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 16044 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
16045 | " - DIE at %s [in module %s]"), |
16046 | sect_offset_str (die->sect_off), | |
5e22e966 | 16047 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 16048 | } |
685b1105 | 16049 | |
e35000a7 TBA |
16050 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
16051 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
16052 | ||
16053 | static bool | |
16054 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
16055 | { | |
16056 | switch (value) | |
16057 | { | |
16058 | case DW_CC_normal: | |
16059 | case DW_CC_pass_by_reference: | |
16060 | case DW_CC_pass_by_value: | |
16061 | return true; | |
16062 | ||
16063 | default: | |
16064 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 16065 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
16066 | return false; |
16067 | } | |
16068 | } | |
16069 | ||
d0922fcf TBA |
16070 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
16071 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
16072 | also according to GNU-specific values (see include/dwarf2.h). */ | |
16073 | ||
16074 | static bool | |
16075 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
16076 | { | |
16077 | switch (value) | |
16078 | { | |
16079 | case DW_CC_normal: | |
16080 | case DW_CC_program: | |
16081 | case DW_CC_nocall: | |
16082 | return true; | |
16083 | ||
16084 | case DW_CC_GNU_renesas_sh: | |
16085 | case DW_CC_GNU_borland_fastcall_i386: | |
16086 | case DW_CC_GDB_IBM_OpenCL: | |
16087 | return true; | |
16088 | ||
16089 | default: | |
16090 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 16091 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
16092 | return false; |
16093 | } | |
16094 | } | |
16095 | ||
c906108c | 16096 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
16097 | (definition) to create a type for the structure or union. Fill in |
16098 | the type's name and general properties; the members will not be | |
83655187 DE |
16099 | processed until process_structure_scope. A symbol table entry for |
16100 | the type will also not be done until process_structure_scope (assuming | |
16101 | the type has a name). | |
c906108c | 16102 | |
c767944b DJ |
16103 | NOTE: we need to call these functions regardless of whether or not the |
16104 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 16105 | structure or union. This gets the type entered into our set of |
83655187 | 16106 | user defined types. */ |
c906108c | 16107 | |
f792889a | 16108 | static struct type * |
134d01f1 | 16109 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16110 | { |
5e22e966 | 16111 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
16112 | struct type *type; |
16113 | struct attribute *attr; | |
15d034d0 | 16114 | const char *name; |
c906108c | 16115 | |
348e048f DE |
16116 | /* If the definition of this type lives in .debug_types, read that type. |
16117 | Don't follow DW_AT_specification though, that will take us back up | |
16118 | the chain and we want to go down. */ | |
052c8bb8 | 16119 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16120 | if (attr != nullptr) |
348e048f | 16121 | { |
ac9ec31b | 16122 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16123 | |
ac9ec31b | 16124 | /* The type's CU may not be the same as CU. |
02142a6c | 16125 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16126 | return set_die_type (die, type, cu); |
16127 | } | |
16128 | ||
c0dd20ea | 16129 | type = alloc_type (objfile); |
c906108c | 16130 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 16131 | |
39cbfefa DJ |
16132 | name = dwarf2_name (die, cu); |
16133 | if (name != NULL) | |
c906108c | 16134 | { |
987504bb | 16135 | if (cu->language == language_cplus |
c44af4eb TT |
16136 | || cu->language == language_d |
16137 | || cu->language == language_rust) | |
63d06c5c | 16138 | { |
15d034d0 | 16139 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
16140 | |
16141 | /* dwarf2_full_name might have already finished building the DIE's | |
16142 | type. If so, there is no need to continue. */ | |
16143 | if (get_die_type (die, cu) != NULL) | |
16144 | return get_die_type (die, cu); | |
16145 | ||
d0e39ea2 | 16146 | type->set_name (full_name); |
63d06c5c DC |
16147 | } |
16148 | else | |
16149 | { | |
d8151005 DJ |
16150 | /* The name is already allocated along with this objfile, so |
16151 | we don't need to duplicate it for the type. */ | |
d0e39ea2 | 16152 | type->set_name (name); |
63d06c5c | 16153 | } |
c906108c SS |
16154 | } |
16155 | ||
16156 | if (die->tag == DW_TAG_structure_type) | |
16157 | { | |
67607e24 | 16158 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
16159 | } |
16160 | else if (die->tag == DW_TAG_union_type) | |
16161 | { | |
67607e24 | 16162 | type->set_code (TYPE_CODE_UNION); |
c906108c SS |
16163 | } |
16164 | else | |
16165 | { | |
67607e24 | 16166 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
16167 | } |
16168 | ||
0cc2414c TT |
16169 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
16170 | TYPE_DECLARED_CLASS (type) = 1; | |
16171 | ||
e35000a7 TBA |
16172 | /* Store the calling convention in the type if it's available in |
16173 | the die. Otherwise the calling convention remains set to | |
16174 | the default value DW_CC_normal. */ | |
16175 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
16176 | if (attr != nullptr | |
529908cb | 16177 | && is_valid_DW_AT_calling_convention_for_type (attr->constant_value (0))) |
e35000a7 TBA |
16178 | { |
16179 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16180 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
529908cb | 16181 | = (enum dwarf_calling_convention) (attr->constant_value (0)); |
e35000a7 TBA |
16182 | } |
16183 | ||
e142c38c | 16184 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16185 | if (attr != nullptr) |
c906108c | 16186 | { |
cd6c91b4 | 16187 | if (attr->form_is_constant ()) |
dda83cd7 | 16188 | TYPE_LENGTH (type) = attr->constant_value (0); |
155bfbd3 JB |
16189 | else |
16190 | { | |
f8e89861 | 16191 | struct dynamic_prop prop; |
293e7e51 | 16192 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) |
5c54719c | 16193 | type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); |
dda83cd7 | 16194 | TYPE_LENGTH (type) = 0; |
155bfbd3 | 16195 | } |
c906108c SS |
16196 | } |
16197 | else | |
16198 | { | |
16199 | TYPE_LENGTH (type) = 0; | |
16200 | } | |
16201 | ||
2b4424c3 TT |
16202 | maybe_set_alignment (cu, die, type); |
16203 | ||
5230b05a | 16204 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 16205 | { |
5230b05a WT |
16206 | /* ICC<14 does not output the required DW_AT_declaration on |
16207 | incomplete types, but gives them a size of zero. */ | |
b4b73759 | 16208 | type->set_is_stub (true); |
685b1105 JK |
16209 | } |
16210 | else | |
9baccff6 | 16211 | type->set_stub_is_supported (true); |
685b1105 | 16212 | |
dc718098 | 16213 | if (die_is_declaration (die, cu)) |
b4b73759 | 16214 | type->set_is_stub (true); |
a6c727b2 DJ |
16215 | else if (attr == NULL && die->child == NULL |
16216 | && producer_is_realview (cu->producer)) | |
16217 | /* RealView does not output the required DW_AT_declaration | |
16218 | on incomplete types. */ | |
b4b73759 | 16219 | type->set_is_stub (true); |
dc718098 | 16220 | |
c906108c SS |
16221 | /* We need to add the type field to the die immediately so we don't |
16222 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 16223 | type within the structure itself. */ |
1c379e20 | 16224 | set_die_type (die, type, cu); |
c906108c | 16225 | |
7e314c57 JK |
16226 | /* set_die_type should be already done. */ |
16227 | set_descriptive_type (type, die, cu); | |
16228 | ||
c767944b DJ |
16229 | return type; |
16230 | } | |
16231 | ||
9c6a1327 TT |
16232 | static void handle_struct_member_die |
16233 | (struct die_info *child_die, | |
16234 | struct type *type, | |
16235 | struct field_info *fi, | |
16236 | std::vector<struct symbol *> *template_args, | |
16237 | struct dwarf2_cu *cu); | |
16238 | ||
16239 | /* A helper for handle_struct_member_die that handles | |
16240 | DW_TAG_variant_part. */ | |
16241 | ||
16242 | static void | |
16243 | handle_variant_part (struct die_info *die, struct type *type, | |
16244 | struct field_info *fi, | |
16245 | std::vector<struct symbol *> *template_args, | |
16246 | struct dwarf2_cu *cu) | |
16247 | { | |
16248 | variant_part_builder *new_part; | |
16249 | if (fi->current_variant_part == nullptr) | |
16250 | { | |
16251 | fi->variant_parts.emplace_back (); | |
16252 | new_part = &fi->variant_parts.back (); | |
16253 | } | |
16254 | else if (!fi->current_variant_part->processing_variant) | |
16255 | { | |
16256 | complaint (_("nested DW_TAG_variant_part seen " | |
16257 | "- DIE at %s [in module %s]"), | |
16258 | sect_offset_str (die->sect_off), | |
5e22e966 | 16259 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16260 | return; |
16261 | } | |
16262 | else | |
16263 | { | |
16264 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
16265 | current.variant_parts.emplace_back (); | |
16266 | new_part = ¤t.variant_parts.back (); | |
16267 | } | |
16268 | ||
16269 | /* When we recurse, we want callees to add to this new variant | |
16270 | part. */ | |
16271 | scoped_restore save_current_variant_part | |
16272 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
16273 | ||
16274 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
16275 | if (discr == NULL) | |
16276 | { | |
16277 | /* It's a univariant form, an extension we support. */ | |
16278 | } | |
16279 | else if (discr->form_is_ref ()) | |
16280 | { | |
16281 | struct dwarf2_cu *target_cu = cu; | |
16282 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16283 | ||
16284 | new_part->discriminant_offset = target_die->sect_off; | |
16285 | } | |
16286 | else | |
16287 | { | |
16288 | complaint (_("DW_AT_discr does not have DIE reference form" | |
16289 | " - DIE at %s [in module %s]"), | |
16290 | sect_offset_str (die->sect_off), | |
5e22e966 | 16291 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16292 | } |
16293 | ||
16294 | for (die_info *child_die = die->child; | |
16295 | child_die != NULL; | |
16296 | child_die = child_die->sibling) | |
16297 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
16298 | } | |
16299 | ||
16300 | /* A helper for handle_struct_member_die that handles | |
16301 | DW_TAG_variant. */ | |
16302 | ||
16303 | static void | |
16304 | handle_variant (struct die_info *die, struct type *type, | |
16305 | struct field_info *fi, | |
16306 | std::vector<struct symbol *> *template_args, | |
16307 | struct dwarf2_cu *cu) | |
16308 | { | |
16309 | if (fi->current_variant_part == nullptr) | |
16310 | { | |
16311 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
16312 | "- DIE at %s [in module %s]"), | |
16313 | sect_offset_str (die->sect_off), | |
5e22e966 | 16314 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16315 | return; |
16316 | } | |
16317 | if (fi->current_variant_part->processing_variant) | |
16318 | { | |
16319 | complaint (_("nested DW_TAG_variant seen " | |
16320 | "- DIE at %s [in module %s]"), | |
16321 | sect_offset_str (die->sect_off), | |
5e22e966 | 16322 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
16323 | return; |
16324 | } | |
16325 | ||
16326 | scoped_restore save_processing_variant | |
16327 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
16328 | true); | |
16329 | ||
16330 | fi->current_variant_part->variants.emplace_back (); | |
16331 | variant_field &variant = fi->current_variant_part->variants.back (); | |
16332 | variant.first_field = fi->fields.size (); | |
16333 | ||
16334 | /* In a variant we want to get the discriminant and also add a | |
16335 | field for our sole member child. */ | |
16336 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
cae21f8e | 16337 | if (discr == nullptr || !discr->form_is_constant ()) |
9c6a1327 TT |
16338 | { |
16339 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
9d2246fc | 16340 | if (discr == nullptr || discr->as_block ()->size == 0) |
9c6a1327 TT |
16341 | variant.default_branch = true; |
16342 | else | |
9d2246fc | 16343 | variant.discr_list_data = discr->as_block (); |
9c6a1327 TT |
16344 | } |
16345 | else | |
cae21f8e | 16346 | variant.discriminant_value = discr->constant_value (0); |
9c6a1327 TT |
16347 | |
16348 | for (die_info *variant_child = die->child; | |
16349 | variant_child != NULL; | |
16350 | variant_child = variant_child->sibling) | |
16351 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
16352 | ||
16353 | variant.last_field = fi->fields.size (); | |
16354 | } | |
16355 | ||
2ddeaf8a TT |
16356 | /* A helper for process_structure_scope that handles a single member |
16357 | DIE. */ | |
16358 | ||
16359 | static void | |
16360 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
16361 | struct field_info *fi, | |
16362 | std::vector<struct symbol *> *template_args, | |
16363 | struct dwarf2_cu *cu) | |
16364 | { | |
16365 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 16366 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
16367 | { |
16368 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
16369 | should be a DW_TAG_member that is a declaration, but | |
16370 | all versions of G++ as of this writing (so through at | |
16371 | least 3.2.1) incorrectly generate DW_TAG_variable | |
16372 | tags for them instead. */ | |
16373 | dwarf2_add_field (fi, child_die, cu); | |
16374 | } | |
16375 | else if (child_die->tag == DW_TAG_subprogram) | |
16376 | { | |
16377 | /* Rust doesn't have member functions in the C++ sense. | |
16378 | However, it does emit ordinary functions as children | |
16379 | of a struct DIE. */ | |
16380 | if (cu->language == language_rust) | |
16381 | read_func_scope (child_die, cu); | |
16382 | else | |
16383 | { | |
16384 | /* C++ member function. */ | |
16385 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
16386 | } | |
16387 | } | |
16388 | else if (child_die->tag == DW_TAG_inheritance) | |
16389 | { | |
16390 | /* C++ base class field. */ | |
16391 | dwarf2_add_field (fi, child_die, cu); | |
16392 | } | |
16393 | else if (type_can_define_types (child_die)) | |
16394 | dwarf2_add_type_defn (fi, child_die, cu); | |
16395 | else if (child_die->tag == DW_TAG_template_type_param | |
16396 | || child_die->tag == DW_TAG_template_value_param) | |
16397 | { | |
16398 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
16399 | ||
16400 | if (arg != NULL) | |
16401 | template_args->push_back (arg); | |
16402 | } | |
9c6a1327 TT |
16403 | else if (child_die->tag == DW_TAG_variant_part) |
16404 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 16405 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 16406 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
16407 | } |
16408 | ||
c767944b DJ |
16409 | /* Finish creating a structure or union type, including filling in |
16410 | its members and creating a symbol for it. */ | |
16411 | ||
16412 | static void | |
16413 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16414 | { | |
5e22e966 | 16415 | struct objfile *objfile = cu->per_objfile->objfile; |
ca040673 | 16416 | struct die_info *child_die; |
c767944b DJ |
16417 | struct type *type; |
16418 | ||
16419 | type = get_die_type (die, cu); | |
16420 | if (type == NULL) | |
16421 | type = read_structure_type (die, cu); | |
16422 | ||
3e1d3d8c | 16423 | bool has_template_parameters = false; |
e142c38c | 16424 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16425 | { |
16426 | struct field_info fi; | |
2f4732b0 | 16427 | std::vector<struct symbol *> template_args; |
c906108c | 16428 | |
639d11d3 | 16429 | child_die = die->child; |
c906108c SS |
16430 | |
16431 | while (child_die && child_die->tag) | |
16432 | { | |
2ddeaf8a | 16433 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 16434 | child_die = child_die->sibling; |
c906108c SS |
16435 | } |
16436 | ||
34eaf542 | 16437 | /* Attach template arguments to type. */ |
2f4732b0 | 16438 | if (!template_args.empty ()) |
34eaf542 | 16439 | { |
3e1d3d8c | 16440 | has_template_parameters = true; |
34eaf542 | 16441 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16442 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16443 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16444 | = XOBNEWVEC (&objfile->objfile_obstack, |
16445 | struct symbol *, | |
16446 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16447 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16448 | template_args.data (), |
34eaf542 TT |
16449 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16450 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16451 | } |
16452 | ||
c906108c | 16453 | /* Attach fields and member functions to the type. */ |
317f7127 | 16454 | if (fi.nfields () > 0) |
e7c27a73 | 16455 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16456 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16457 | { |
e7c27a73 | 16458 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16459 | |
c5aa993b | 16460 | /* Get the type which refers to the base class (possibly this |
c906108c | 16461 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16462 | class from the DW_AT_containing_type attribute. This use of |
16463 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16464 | |
e142c38c | 16465 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16466 | { |
e7c27a73 | 16467 | struct type *t = die_containing_type (die, cu); |
c906108c | 16468 | |
ae6ae975 | 16469 | set_type_vptr_basetype (type, t); |
c906108c SS |
16470 | if (type == t) |
16471 | { | |
c906108c SS |
16472 | int i; |
16473 | ||
16474 | /* Our own class provides vtbl ptr. */ | |
1f704f76 | 16475 | for (i = t->num_fields () - 1; |
c906108c SS |
16476 | i >= TYPE_N_BASECLASSES (t); |
16477 | --i) | |
16478 | { | |
0d5cff50 | 16479 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16480 | |
dda83cd7 | 16481 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16482 | { |
ae6ae975 | 16483 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16484 | break; |
16485 | } | |
16486 | } | |
16487 | ||
16488 | /* Complain if virtual function table field not found. */ | |
16489 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16490 | complaint (_("virtual function table pointer " |
3e43a32a | 16491 | "not found when defining class '%s'"), |
7d93a1e0 | 16492 | type->name () ? type->name () : ""); |
c906108c SS |
16493 | } |
16494 | else | |
16495 | { | |
ae6ae975 | 16496 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16497 | } |
16498 | } | |
f6235d4c | 16499 | else if (cu->producer |
61012eef | 16500 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16501 | { |
16502 | /* The IBM XLC compiler does not provide direct indication | |
dda83cd7 SM |
16503 | of the containing type, but the vtable pointer is |
16504 | always named __vfp. */ | |
f6235d4c EZ |
16505 | |
16506 | int i; | |
16507 | ||
1f704f76 | 16508 | for (i = type->num_fields () - 1; |
f6235d4c EZ |
16509 | i >= TYPE_N_BASECLASSES (type); |
16510 | --i) | |
16511 | { | |
16512 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16513 | { | |
ae6ae975 DE |
16514 | set_type_vptr_fieldno (type, i); |
16515 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16516 | break; |
16517 | } | |
16518 | } | |
16519 | } | |
c906108c | 16520 | } |
98751a41 JK |
16521 | |
16522 | /* Copy fi.typedef_field_list linked list elements content into the | |
16523 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16524 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16525 | { |
be2daae6 | 16526 | int count = fi.typedef_field_list.size (); |
98751a41 | 16527 | |
a0d7a4ff | 16528 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16529 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16530 | = ((struct decl_field *) |
be2daae6 TT |
16531 | TYPE_ALLOC (type, |
16532 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16533 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16534 | |
be2daae6 TT |
16535 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16536 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16537 | } |
c767944b | 16538 | |
883fd55a KS |
16539 | /* Copy fi.nested_types_list linked list elements content into the |
16540 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16541 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16542 | { |
be2daae6 | 16543 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16544 | |
16545 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16546 | TYPE_NESTED_TYPES_ARRAY (type) | |
16547 | = ((struct decl_field *) | |
be2daae6 TT |
16548 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16549 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16550 | |
be2daae6 TT |
16551 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16552 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16553 | } |
c906108c | 16554 | } |
63d06c5c | 16555 | |
bb5ed363 | 16556 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16557 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16558 | cu->rust_unions.push_back (type); | |
57567375 TT |
16559 | else if (cu->language == language_ada) |
16560 | quirk_ada_thick_pointer_struct (die, cu, type); | |
0b92b5bb | 16561 | |
90aeadfc DC |
16562 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16563 | snapshots) has been known to create a die giving a declaration | |
16564 | for a class that has, as a child, a die giving a definition for a | |
16565 | nested class. So we have to process our children even if the | |
16566 | current die is a declaration. Normally, of course, a declaration | |
16567 | won't have any children at all. */ | |
134d01f1 | 16568 | |
ca040673 DE |
16569 | child_die = die->child; |
16570 | ||
90aeadfc DC |
16571 | while (child_die != NULL && child_die->tag) |
16572 | { | |
16573 | if (child_die->tag == DW_TAG_member | |
16574 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16575 | || child_die->tag == DW_TAG_inheritance |
16576 | || child_die->tag == DW_TAG_template_value_param | |
16577 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16578 | { |
90aeadfc | 16579 | /* Do nothing. */ |
134d01f1 | 16580 | } |
90aeadfc DC |
16581 | else |
16582 | process_die (child_die, cu); | |
134d01f1 | 16583 | |
436c571c | 16584 | child_die = child_die->sibling; |
134d01f1 DJ |
16585 | } |
16586 | ||
fa4028e9 JB |
16587 | /* Do not consider external references. According to the DWARF standard, |
16588 | these DIEs are identified by the fact that they have no byte_size | |
16589 | attribute, and a declaration attribute. */ | |
16590 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15cd93d0 TV |
16591 | || !die_is_declaration (die, cu) |
16592 | || dwarf2_attr (die, DW_AT_signature, cu) != NULL) | |
3e1d3d8c TT |
16593 | { |
16594 | struct symbol *sym = new_symbol (die, type, cu); | |
16595 | ||
16596 | if (has_template_parameters) | |
16597 | { | |
a776957c TT |
16598 | struct symtab *symtab; |
16599 | if (sym != nullptr) | |
16600 | symtab = symbol_symtab (sym); | |
16601 | else if (cu->line_header != nullptr) | |
16602 | { | |
16603 | /* Any related symtab will do. */ | |
16604 | symtab | |
7ba99d21 | 16605 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
16606 | } |
16607 | else | |
16608 | { | |
16609 | symtab = nullptr; | |
16610 | complaint (_("could not find suitable " | |
16611 | "symtab for template parameter" | |
16612 | " - DIE at %s [in module %s]"), | |
16613 | sect_offset_str (die->sect_off), | |
16614 | objfile_name (objfile)); | |
16615 | } | |
16616 | ||
16617 | if (symtab != nullptr) | |
16618 | { | |
16619 | /* Make sure that the symtab is set on the new symbols. | |
16620 | Even though they don't appear in this symtab directly, | |
16621 | other parts of gdb assume that symbols do, and this is | |
16622 | reasonably true. */ | |
16623 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16624 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16625 | } | |
3e1d3d8c TT |
16626 | } |
16627 | } | |
134d01f1 DJ |
16628 | } |
16629 | ||
ed6acedd TT |
16630 | /* Assuming DIE is an enumeration type, and TYPE is its associated |
16631 | type, update TYPE using some information only available in DIE's | |
16632 | children. In particular, the fields are computed. */ | |
55426c9d JB |
16633 | |
16634 | static void | |
16635 | update_enumeration_type_from_children (struct die_info *die, | |
16636 | struct type *type, | |
16637 | struct dwarf2_cu *cu) | |
16638 | { | |
60f7655a | 16639 | struct die_info *child_die; |
55426c9d JB |
16640 | int unsigned_enum = 1; |
16641 | int flag_enum = 1; | |
55426c9d | 16642 | |
8268c778 | 16643 | auto_obstack obstack; |
ed6acedd | 16644 | std::vector<struct field> fields; |
55426c9d | 16645 | |
60f7655a DE |
16646 | for (child_die = die->child; |
16647 | child_die != NULL && child_die->tag; | |
436c571c | 16648 | child_die = child_die->sibling) |
55426c9d JB |
16649 | { |
16650 | struct attribute *attr; | |
16651 | LONGEST value; | |
16652 | const gdb_byte *bytes; | |
16653 | struct dwarf2_locexpr_baton *baton; | |
16654 | const char *name; | |
60f7655a | 16655 | |
55426c9d JB |
16656 | if (child_die->tag != DW_TAG_enumerator) |
16657 | continue; | |
16658 | ||
16659 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16660 | if (attr == NULL) | |
16661 | continue; | |
16662 | ||
16663 | name = dwarf2_name (child_die, cu); | |
16664 | if (name == NULL) | |
16665 | name = "<anonymous enumerator>"; | |
16666 | ||
16667 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16668 | &value, &bytes, &baton); | |
16669 | if (value < 0) | |
16670 | { | |
16671 | unsigned_enum = 0; | |
16672 | flag_enum = 0; | |
16673 | } | |
55426c9d | 16674 | else |
edd45eb0 SM |
16675 | { |
16676 | if (count_one_bits_ll (value) >= 2) | |
16677 | flag_enum = 0; | |
edd45eb0 | 16678 | } |
55426c9d | 16679 | |
ed6acedd TT |
16680 | fields.emplace_back (); |
16681 | struct field &field = fields.back (); | |
16682 | FIELD_NAME (field) = dwarf2_physname (name, child_die, cu); | |
16683 | SET_FIELD_ENUMVAL (field, value); | |
16684 | } | |
16685 | ||
16686 | if (!fields.empty ()) | |
16687 | { | |
5e33d5f4 | 16688 | type->set_num_fields (fields.size ()); |
3cabb6b0 SM |
16689 | type->set_fields |
16690 | ((struct field *) | |
16691 | TYPE_ALLOC (type, sizeof (struct field) * fields.size ())); | |
80fc5e77 | 16692 | memcpy (type->fields (), fields.data (), |
ed6acedd | 16693 | sizeof (struct field) * fields.size ()); |
55426c9d JB |
16694 | } |
16695 | ||
16696 | if (unsigned_enum) | |
653223d3 SM |
16697 | type->set_is_unsigned (true); |
16698 | ||
55426c9d JB |
16699 | if (flag_enum) |
16700 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16701 | } |
16702 | ||
134d01f1 DJ |
16703 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16704 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16705 | |
f792889a | 16706 | static struct type * |
134d01f1 | 16707 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16708 | { |
5e22e966 | 16709 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16710 | struct type *type; |
c906108c | 16711 | struct attribute *attr; |
0114d602 | 16712 | const char *name; |
134d01f1 | 16713 | |
348e048f DE |
16714 | /* If the definition of this type lives in .debug_types, read that type. |
16715 | Don't follow DW_AT_specification though, that will take us back up | |
16716 | the chain and we want to go down. */ | |
052c8bb8 | 16717 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16718 | if (attr != nullptr) |
348e048f | 16719 | { |
ac9ec31b | 16720 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16721 | |
ac9ec31b | 16722 | /* The type's CU may not be the same as CU. |
02142a6c | 16723 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16724 | return set_die_type (die, type, cu); |
16725 | } | |
16726 | ||
c906108c SS |
16727 | type = alloc_type (objfile); |
16728 | ||
67607e24 | 16729 | type->set_code (TYPE_CODE_ENUM); |
94af9270 | 16730 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16731 | if (name != NULL) |
d0e39ea2 | 16732 | type->set_name (name); |
c906108c | 16733 | |
0626fc76 TT |
16734 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16735 | if (attr != NULL) | |
16736 | { | |
16737 | struct type *underlying_type = die_type (die, cu); | |
16738 | ||
16739 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16740 | } | |
16741 | ||
e142c38c | 16742 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16743 | if (attr != nullptr) |
c906108c | 16744 | { |
529908cb | 16745 | TYPE_LENGTH (type) = attr->constant_value (0); |
c906108c SS |
16746 | } |
16747 | else | |
16748 | { | |
16749 | TYPE_LENGTH (type) = 0; | |
16750 | } | |
16751 | ||
2b4424c3 TT |
16752 | maybe_set_alignment (cu, die, type); |
16753 | ||
137033e9 JB |
16754 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16755 | declared as private in the package spec, and then defined only | |
16756 | inside the package body. Such types are known as Taft Amendment | |
16757 | Types. When another package uses such a type, an incomplete DIE | |
16758 | may be generated by the compiler. */ | |
02eb380e | 16759 | if (die_is_declaration (die, cu)) |
b4b73759 | 16760 | type->set_is_stub (true); |
02eb380e | 16761 | |
0626fc76 TT |
16762 | /* If this type has an underlying type that is not a stub, then we |
16763 | may use its attributes. We always use the "unsigned" attribute | |
16764 | in this situation, because ordinarily we guess whether the type | |
16765 | is unsigned -- but the guess can be wrong and the underlying type | |
16766 | can tell us the reality. However, we defer to a local size | |
16767 | attribute if one exists, because this lets the compiler override | |
16768 | the underlying type if needed. */ | |
e46d3488 | 16769 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_TARGET_TYPE (type)->is_stub ()) |
0626fc76 | 16770 | { |
9e7c9a03 HD |
16771 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
16772 | underlying_type = check_typedef (underlying_type); | |
653223d3 SM |
16773 | |
16774 | type->set_is_unsigned (underlying_type->is_unsigned ()); | |
16775 | ||
0626fc76 | 16776 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 16777 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
653223d3 | 16778 | |
2b4424c3 | 16779 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
16780 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
16781 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
16782 | } |
16783 | ||
3d567982 TT |
16784 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16785 | ||
ed6acedd TT |
16786 | set_die_type (die, type, cu); |
16787 | ||
16788 | /* Finish the creation of this type by using the enum's children. | |
16789 | Note that, as usual, this must come after set_die_type to avoid | |
16790 | infinite recursion when trying to compute the names of the | |
16791 | enumerators. */ | |
16792 | update_enumeration_type_from_children (die, type, cu); | |
16793 | ||
16794 | return type; | |
134d01f1 DJ |
16795 | } |
16796 | ||
16797 | /* Given a pointer to a die which begins an enumeration, process all | |
16798 | the dies that define the members of the enumeration, and create the | |
16799 | symbol for the enumeration type. | |
16800 | ||
16801 | NOTE: We reverse the order of the element list. */ | |
16802 | ||
16803 | static void | |
16804 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16805 | { | |
f792889a | 16806 | struct type *this_type; |
134d01f1 | 16807 | |
f792889a DJ |
16808 | this_type = get_die_type (die, cu); |
16809 | if (this_type == NULL) | |
16810 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16811 | |
639d11d3 | 16812 | if (die->child != NULL) |
c906108c | 16813 | { |
9dc481d3 | 16814 | struct die_info *child_die; |
15d034d0 | 16815 | const char *name; |
9dc481d3 | 16816 | |
639d11d3 | 16817 | child_die = die->child; |
c906108c SS |
16818 | while (child_die && child_die->tag) |
16819 | { | |
16820 | if (child_die->tag != DW_TAG_enumerator) | |
16821 | { | |
e7c27a73 | 16822 | process_die (child_die, cu); |
c906108c SS |
16823 | } |
16824 | else | |
16825 | { | |
39cbfefa DJ |
16826 | name = dwarf2_name (child_die, cu); |
16827 | if (name) | |
ed6acedd | 16828 | new_symbol (child_die, this_type, cu); |
c906108c SS |
16829 | } |
16830 | ||
436c571c | 16831 | child_die = child_die->sibling; |
c906108c | 16832 | } |
c906108c | 16833 | } |
134d01f1 | 16834 | |
6c83ed52 TT |
16835 | /* If we are reading an enum from a .debug_types unit, and the enum |
16836 | is a declaration, and the enum is not the signatured type in the | |
16837 | unit, then we do not want to add a symbol for it. Adding a | |
16838 | symbol would in some cases obscure the true definition of the | |
16839 | enum, giving users an incomplete type when the definition is | |
16840 | actually available. Note that we do not want to do this for all | |
16841 | enums which are just declarations, because C++0x allows forward | |
16842 | enum declarations. */ | |
3019eac3 | 16843 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16844 | && die_is_declaration (die, cu)) |
16845 | { | |
52dc124a | 16846 | struct signatured_type *sig_type; |
6c83ed52 | 16847 | |
c0f78cd4 | 16848 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16849 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16850 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16851 | return; |
16852 | } | |
16853 | ||
f792889a | 16854 | new_symbol (die, this_type, cu); |
c906108c SS |
16855 | } |
16856 | ||
57567375 TT |
16857 | /* Helper function for quirk_ada_thick_pointer that examines a bounds |
16858 | expression for an index type and finds the corresponding field | |
16859 | offset in the hidden "P_BOUNDS" structure. Returns true on success | |
16860 | and updates *FIELD, false if it fails to recognize an | |
16861 | expression. */ | |
16862 | ||
16863 | static bool | |
16864 | recognize_bound_expression (struct die_info *die, enum dwarf_attribute name, | |
16865 | int *bounds_offset, struct field *field, | |
16866 | struct dwarf2_cu *cu) | |
16867 | { | |
16868 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
16869 | if (attr == nullptr || !attr->form_is_block ()) | |
16870 | return false; | |
16871 | ||
16872 | const struct dwarf_block *block = attr->as_block (); | |
16873 | const gdb_byte *start = block->data; | |
16874 | const gdb_byte *end = block->data + block->size; | |
16875 | ||
16876 | /* The expression to recognize generally looks like: | |
16877 | ||
16878 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16879 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
16880 | ||
16881 | However, the second "plus_uconst" may be missing: | |
16882 | ||
16883 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16884 | DW_OP_deref_size: 4) | |
16885 | ||
16886 | This happens when the field is at the start of the structure. | |
16887 | ||
16888 | Also, the final deref may not be sized: | |
16889 | ||
16890 | (DW_OP_push_object_address; DW_OP_plus_uconst: 4; DW_OP_deref; | |
16891 | DW_OP_deref) | |
16892 | ||
16893 | This happens when the size of the index type happens to be the | |
16894 | same as the architecture's word size. This can occur with or | |
16895 | without the second plus_uconst. */ | |
16896 | ||
16897 | if (end - start < 2) | |
16898 | return false; | |
16899 | if (*start++ != DW_OP_push_object_address) | |
16900 | return false; | |
16901 | if (*start++ != DW_OP_plus_uconst) | |
16902 | return false; | |
16903 | ||
16904 | uint64_t this_bound_off; | |
16905 | start = gdb_read_uleb128 (start, end, &this_bound_off); | |
16906 | if (start == nullptr || (int) this_bound_off != this_bound_off) | |
16907 | return false; | |
16908 | /* Update *BOUNDS_OFFSET if needed, or alternatively verify that it | |
16909 | is consistent among all bounds. */ | |
16910 | if (*bounds_offset == -1) | |
16911 | *bounds_offset = this_bound_off; | |
16912 | else if (*bounds_offset != this_bound_off) | |
16913 | return false; | |
16914 | ||
16915 | if (start == end || *start++ != DW_OP_deref) | |
16916 | return false; | |
16917 | ||
16918 | int offset = 0; | |
16919 | if (start ==end) | |
16920 | return false; | |
16921 | else if (*start == DW_OP_deref_size || *start == DW_OP_deref) | |
16922 | { | |
16923 | /* This means an offset of 0. */ | |
16924 | } | |
16925 | else if (*start++ != DW_OP_plus_uconst) | |
16926 | return false; | |
16927 | else | |
16928 | { | |
16929 | /* The size is the parameter to DW_OP_plus_uconst. */ | |
16930 | uint64_t val; | |
16931 | start = gdb_read_uleb128 (start, end, &val); | |
16932 | if (start == nullptr) | |
16933 | return false; | |
16934 | if ((int) val != val) | |
16935 | return false; | |
16936 | offset = val; | |
16937 | } | |
16938 | ||
16939 | if (start == end) | |
16940 | return false; | |
16941 | ||
16942 | uint64_t size; | |
16943 | if (*start == DW_OP_deref_size) | |
16944 | { | |
16945 | start = gdb_read_uleb128 (start + 1, end, &size); | |
16946 | if (start == nullptr) | |
16947 | return false; | |
16948 | } | |
16949 | else if (*start == DW_OP_deref) | |
16950 | { | |
16951 | size = cu->header.addr_size; | |
16952 | ++start; | |
16953 | } | |
16954 | else | |
16955 | return false; | |
16956 | ||
16957 | SET_FIELD_BITPOS (*field, 8 * offset); | |
16958 | if (size != TYPE_LENGTH (field->type ())) | |
16959 | FIELD_BITSIZE (*field) = 8 * size; | |
16960 | ||
16961 | return true; | |
16962 | } | |
16963 | ||
16964 | /* With -fgnat-encodings=minimal, gcc will emit some unusual DWARF for | |
16965 | some kinds of Ada arrays: | |
16966 | ||
16967 | <1><11db>: Abbrev Number: 7 (DW_TAG_array_type) | |
16968 | <11dc> DW_AT_name : (indirect string, offset: 0x1bb8): string | |
16969 | <11e0> DW_AT_data_location: 2 byte block: 97 6 | |
16970 | (DW_OP_push_object_address; DW_OP_deref) | |
16971 | <11e3> DW_AT_type : <0x1173> | |
16972 | <11e7> DW_AT_sibling : <0x1201> | |
16973 | <2><11eb>: Abbrev Number: 8 (DW_TAG_subrange_type) | |
16974 | <11ec> DW_AT_type : <0x1206> | |
16975 | <11f0> DW_AT_lower_bound : 6 byte block: 97 23 8 6 94 4 | |
16976 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16977 | DW_OP_deref_size: 4) | |
16978 | <11f7> DW_AT_upper_bound : 8 byte block: 97 23 8 6 23 4 94 4 | |
16979 | (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref; | |
16980 | DW_OP_plus_uconst: 4; DW_OP_deref_size: 4) | |
16981 | ||
16982 | This actually represents a "thick pointer", which is a structure | |
16983 | with two elements: one that is a pointer to the array data, and one | |
16984 | that is a pointer to another structure; this second structure holds | |
16985 | the array bounds. | |
16986 | ||
16987 | This returns a new type on success, or nullptr if this didn't | |
16988 | recognize the type. */ | |
16989 | ||
16990 | static struct type * | |
16991 | quirk_ada_thick_pointer (struct die_info *die, struct dwarf2_cu *cu, | |
16992 | struct type *type) | |
16993 | { | |
16994 | struct attribute *attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
16995 | /* So far we've only seen this with block form. */ | |
16996 | if (attr == nullptr || !attr->form_is_block ()) | |
16997 | return nullptr; | |
16998 | ||
16999 | /* Note that this will fail if the structure layout is changed by | |
17000 | the compiler. However, we have no good way to recognize some | |
17001 | other layout, because we don't know what expression the compiler | |
17002 | might choose to emit should this happen. */ | |
17003 | struct dwarf_block *blk = attr->as_block (); | |
17004 | if (blk->size != 2 | |
17005 | || blk->data[0] != DW_OP_push_object_address | |
17006 | || blk->data[1] != DW_OP_deref) | |
17007 | return nullptr; | |
17008 | ||
17009 | int bounds_offset = -1; | |
17010 | int max_align = -1; | |
17011 | std::vector<struct field> range_fields; | |
17012 | for (struct die_info *child_die = die->child; | |
17013 | child_die; | |
17014 | child_die = child_die->sibling) | |
17015 | { | |
17016 | if (child_die->tag == DW_TAG_subrange_type) | |
17017 | { | |
17018 | struct type *underlying = read_subrange_index_type (child_die, cu); | |
17019 | ||
17020 | int this_align = type_align (underlying); | |
17021 | if (this_align > max_align) | |
17022 | max_align = this_align; | |
17023 | ||
17024 | range_fields.emplace_back (); | |
17025 | range_fields.emplace_back (); | |
17026 | ||
17027 | struct field &lower = range_fields[range_fields.size () - 2]; | |
17028 | struct field &upper = range_fields[range_fields.size () - 1]; | |
17029 | ||
17030 | lower.set_type (underlying); | |
17031 | FIELD_ARTIFICIAL (lower) = 1; | |
17032 | ||
17033 | upper.set_type (underlying); | |
17034 | FIELD_ARTIFICIAL (upper) = 1; | |
17035 | ||
17036 | if (!recognize_bound_expression (child_die, DW_AT_lower_bound, | |
17037 | &bounds_offset, &lower, cu) | |
17038 | || !recognize_bound_expression (child_die, DW_AT_upper_bound, | |
17039 | &bounds_offset, &upper, cu)) | |
17040 | return nullptr; | |
17041 | } | |
17042 | } | |
17043 | ||
17044 | /* This shouldn't really happen, but double-check that we found | |
17045 | where the bounds are stored. */ | |
17046 | if (bounds_offset == -1) | |
17047 | return nullptr; | |
17048 | ||
17049 | struct objfile *objfile = cu->per_objfile->objfile; | |
17050 | for (int i = 0; i < range_fields.size (); i += 2) | |
17051 | { | |
17052 | char name[20]; | |
17053 | ||
17054 | /* Set the name of each field in the bounds. */ | |
17055 | xsnprintf (name, sizeof (name), "LB%d", i / 2); | |
17056 | FIELD_NAME (range_fields[i]) = objfile->intern (name); | |
17057 | xsnprintf (name, sizeof (name), "UB%d", i / 2); | |
17058 | FIELD_NAME (range_fields[i + 1]) = objfile->intern (name); | |
17059 | } | |
17060 | ||
17061 | struct type *bounds = alloc_type (objfile); | |
17062 | bounds->set_code (TYPE_CODE_STRUCT); | |
17063 | ||
17064 | bounds->set_num_fields (range_fields.size ()); | |
17065 | bounds->set_fields | |
17066 | ((struct field *) TYPE_ALLOC (bounds, (bounds->num_fields () | |
17067 | * sizeof (struct field)))); | |
17068 | memcpy (bounds->fields (), range_fields.data (), | |
17069 | bounds->num_fields () * sizeof (struct field)); | |
17070 | ||
17071 | int last_fieldno = range_fields.size () - 1; | |
17072 | int bounds_size = (TYPE_FIELD_BITPOS (bounds, last_fieldno) / 8 | |
17073 | + TYPE_LENGTH (bounds->field (last_fieldno).type ())); | |
17074 | TYPE_LENGTH (bounds) = align_up (bounds_size, max_align); | |
17075 | ||
17076 | /* Rewrite the existing array type in place. Specifically, we | |
17077 | remove any dynamic properties we might have read, and we replace | |
17078 | the index types. */ | |
17079 | struct type *iter = type; | |
17080 | for (int i = 0; i < range_fields.size (); i += 2) | |
17081 | { | |
17082 | gdb_assert (iter->code () == TYPE_CODE_ARRAY); | |
17083 | iter->main_type->dyn_prop_list = nullptr; | |
17084 | iter->set_index_type | |
17085 | (create_static_range_type (NULL, bounds->field (i).type (), 1, 0)); | |
17086 | iter = TYPE_TARGET_TYPE (iter); | |
17087 | } | |
17088 | ||
17089 | struct type *result = alloc_type (objfile); | |
17090 | result->set_code (TYPE_CODE_STRUCT); | |
17091 | ||
17092 | result->set_num_fields (2); | |
17093 | result->set_fields | |
17094 | ((struct field *) TYPE_ZALLOC (result, (result->num_fields () | |
17095 | * sizeof (struct field)))); | |
17096 | ||
17097 | /* The names are chosen to coincide with what the compiler does with | |
17098 | -fgnat-encodings=all, which the Ada code in gdb already | |
17099 | understands. */ | |
17100 | TYPE_FIELD_NAME (result, 0) = "P_ARRAY"; | |
17101 | result->field (0).set_type (lookup_pointer_type (type)); | |
17102 | ||
17103 | TYPE_FIELD_NAME (result, 1) = "P_BOUNDS"; | |
17104 | result->field (1).set_type (lookup_pointer_type (bounds)); | |
17105 | SET_FIELD_BITPOS (result->field (1), 8 * bounds_offset); | |
17106 | ||
17107 | result->set_name (type->name ()); | |
17108 | TYPE_LENGTH (result) = (TYPE_LENGTH (result->field (0).type ()) | |
17109 | + TYPE_LENGTH (result->field (1).type ())); | |
17110 | ||
17111 | return result; | |
17112 | } | |
17113 | ||
c906108c SS |
17114 | /* Extract all information from a DW_TAG_array_type DIE and put it in |
17115 | the DIE's type field. For now, this only handles one dimensional | |
17116 | arrays. */ | |
17117 | ||
f792889a | 17118 | static struct type * |
e7c27a73 | 17119 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17120 | { |
5e22e966 | 17121 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 17122 | struct die_info *child_die; |
7e314c57 | 17123 | struct type *type; |
c906108c | 17124 | struct type *element_type, *range_type, *index_type; |
c906108c | 17125 | struct attribute *attr; |
15d034d0 | 17126 | const char *name; |
a405673c | 17127 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 17128 | unsigned int bit_stride = 0; |
c906108c | 17129 | |
e7c27a73 | 17130 | element_type = die_type (die, cu); |
c906108c | 17131 | |
7e314c57 JK |
17132 | /* The die_type call above may have already set the type for this DIE. */ |
17133 | type = get_die_type (die, cu); | |
17134 | if (type) | |
17135 | return type; | |
17136 | ||
dc53a7ad JB |
17137 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
17138 | if (attr != NULL) | |
a405673c JB |
17139 | { |
17140 | int stride_ok; | |
293e7e51 | 17141 | struct type *prop_type = cu->addr_sized_int_type (false); |
a405673c JB |
17142 | |
17143 | byte_stride_prop | |
17144 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
17145 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
17146 | prop_type); | |
a405673c JB |
17147 | if (!stride_ok) |
17148 | { | |
b98664d3 | 17149 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
17150 | " - DIE at %s [in module %s]"), |
17151 | sect_offset_str (die->sect_off), | |
5e22e966 | 17152 | objfile_name (cu->per_objfile->objfile)); |
a405673c JB |
17153 | /* Ignore this attribute. We will likely not be able to print |
17154 | arrays of this type correctly, but there is little we can do | |
17155 | to help if we cannot read the attribute's value. */ | |
17156 | byte_stride_prop = NULL; | |
17157 | } | |
17158 | } | |
dc53a7ad JB |
17159 | |
17160 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17161 | if (attr != NULL) | |
529908cb | 17162 | bit_stride = attr->constant_value (0); |
dc53a7ad | 17163 | |
c906108c SS |
17164 | /* Irix 6.2 native cc creates array types without children for |
17165 | arrays with unspecified length. */ | |
639d11d3 | 17166 | if (die->child == NULL) |
c906108c | 17167 | { |
46bf5051 | 17168 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 17169 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 17170 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 17171 | byte_stride_prop, bit_stride); |
f792889a | 17172 | return set_die_type (die, type, cu); |
c906108c SS |
17173 | } |
17174 | ||
791afaa2 | 17175 | std::vector<struct type *> range_types; |
639d11d3 | 17176 | child_die = die->child; |
c906108c SS |
17177 | while (child_die && child_die->tag) |
17178 | { | |
17179 | if (child_die->tag == DW_TAG_subrange_type) | |
17180 | { | |
f792889a | 17181 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 17182 | |
dda83cd7 SM |
17183 | if (child_type != NULL) |
17184 | { | |
0963b4bd | 17185 | /* The range type was succesfully read. Save it for the |
dda83cd7 | 17186 | array type creation. */ |
791afaa2 | 17187 | range_types.push_back (child_type); |
dda83cd7 | 17188 | } |
c906108c | 17189 | } |
436c571c | 17190 | child_die = child_die->sibling; |
c906108c SS |
17191 | } |
17192 | ||
cf2b2075 TV |
17193 | if (range_types.empty ()) |
17194 | { | |
17195 | complaint (_("unable to find array range - DIE at %s [in module %s]"), | |
17196 | sect_offset_str (die->sect_off), | |
17197 | objfile_name (cu->per_objfile->objfile)); | |
17198 | return NULL; | |
17199 | } | |
17200 | ||
c906108c SS |
17201 | /* Dwarf2 dimensions are output from left to right, create the |
17202 | necessary array types in backwards order. */ | |
7ca2d3a3 | 17203 | |
c906108c | 17204 | type = element_type; |
7ca2d3a3 DL |
17205 | |
17206 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
17207 | { | |
17208 | int i = 0; | |
9a619af0 | 17209 | |
791afaa2 | 17210 | while (i < range_types.size ()) |
10f6a3ad TT |
17211 | { |
17212 | type = create_array_type_with_stride (NULL, type, range_types[i++], | |
17213 | byte_stride_prop, bit_stride); | |
17214 | bit_stride = 0; | |
17215 | byte_stride_prop = nullptr; | |
17216 | } | |
7ca2d3a3 DL |
17217 | } |
17218 | else | |
17219 | { | |
791afaa2 | 17220 | size_t ndim = range_types.size (); |
7ca2d3a3 | 17221 | while (ndim-- > 0) |
10f6a3ad TT |
17222 | { |
17223 | type = create_array_type_with_stride (NULL, type, range_types[ndim], | |
17224 | byte_stride_prop, bit_stride); | |
17225 | bit_stride = 0; | |
17226 | byte_stride_prop = nullptr; | |
17227 | } | |
7ca2d3a3 | 17228 | } |
c906108c | 17229 | |
cf2b2075 TV |
17230 | gdb_assert (type != element_type); |
17231 | ||
f5f8a009 EZ |
17232 | /* Understand Dwarf2 support for vector types (like they occur on |
17233 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
17234 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
17235 | custom vendor extension. The main difference between a regular | |
17236 | array and the vector variant is that vectors are passed by value | |
17237 | to functions. */ | |
e142c38c | 17238 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 17239 | if (attr != nullptr) |
ea37ba09 | 17240 | make_vector_type (type); |
f5f8a009 | 17241 | |
dbc98a8b KW |
17242 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
17243 | implementation may choose to implement triple vectors using this | |
17244 | attribute. */ | |
17245 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb | 17246 | if (attr != nullptr && attr->form_is_unsigned ()) |
dbc98a8b | 17247 | { |
529908cb TT |
17248 | if (attr->as_unsigned () >= TYPE_LENGTH (type)) |
17249 | TYPE_LENGTH (type) = attr->as_unsigned (); | |
dbc98a8b | 17250 | else |
b98664d3 | 17251 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 17252 | "than the total size of elements")); |
dbc98a8b KW |
17253 | } |
17254 | ||
39cbfefa DJ |
17255 | name = dwarf2_name (die, cu); |
17256 | if (name) | |
d0e39ea2 | 17257 | type->set_name (name); |
6e70227d | 17258 | |
2b4424c3 TT |
17259 | maybe_set_alignment (cu, die, type); |
17260 | ||
57567375 TT |
17261 | struct type *replacement_type = nullptr; |
17262 | if (cu->language == language_ada) | |
17263 | { | |
17264 | replacement_type = quirk_ada_thick_pointer (die, cu, type); | |
17265 | if (replacement_type != nullptr) | |
17266 | type = replacement_type; | |
17267 | } | |
17268 | ||
0963b4bd | 17269 | /* Install the type in the die. */ |
57567375 | 17270 | set_die_type (die, type, cu, replacement_type != nullptr); |
7e314c57 JK |
17271 | |
17272 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17273 | set_descriptive_type (type, die, cu); |
17274 | ||
7e314c57 | 17275 | return type; |
c906108c SS |
17276 | } |
17277 | ||
7ca2d3a3 | 17278 | static enum dwarf_array_dim_ordering |
6e70227d | 17279 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
17280 | { |
17281 | struct attribute *attr; | |
17282 | ||
17283 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
17284 | ||
435d3d88 | 17285 | if (attr != nullptr) |
1bc397c5 TT |
17286 | { |
17287 | LONGEST val = attr->constant_value (-1); | |
17288 | if (val == DW_ORD_row_major || val == DW_ORD_col_major) | |
17289 | return (enum dwarf_array_dim_ordering) val; | |
17290 | } | |
7ca2d3a3 | 17291 | |
0963b4bd MS |
17292 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
17293 | opposite order to the dwarf2 specification, but data is still | |
17294 | laid out as per normal fortran. | |
7ca2d3a3 | 17295 | |
0963b4bd MS |
17296 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
17297 | version checking. */ | |
7ca2d3a3 | 17298 | |
905e0470 PM |
17299 | if (cu->language == language_fortran |
17300 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
17301 | { |
17302 | return DW_ORD_row_major; | |
17303 | } | |
17304 | ||
3a3440fb | 17305 | switch (cu->language_defn->array_ordering ()) |
7ca2d3a3 DL |
17306 | { |
17307 | case array_column_major: | |
17308 | return DW_ORD_col_major; | |
17309 | case array_row_major: | |
17310 | default: | |
17311 | return DW_ORD_row_major; | |
17312 | }; | |
17313 | } | |
17314 | ||
72019c9c | 17315 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 17316 | the DIE's type field. */ |
72019c9c | 17317 | |
f792889a | 17318 | static struct type * |
72019c9c GM |
17319 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
17320 | { | |
7e314c57 JK |
17321 | struct type *domain_type, *set_type; |
17322 | struct attribute *attr; | |
f792889a | 17323 | |
7e314c57 JK |
17324 | domain_type = die_type (die, cu); |
17325 | ||
17326 | /* The die_type call above may have already set the type for this DIE. */ | |
17327 | set_type = get_die_type (die, cu); | |
17328 | if (set_type) | |
17329 | return set_type; | |
17330 | ||
17331 | set_type = create_set_type (NULL, domain_type); | |
17332 | ||
17333 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
529908cb TT |
17334 | if (attr != nullptr && attr->form_is_unsigned ()) |
17335 | TYPE_LENGTH (set_type) = attr->as_unsigned (); | |
7e314c57 | 17336 | |
2b4424c3 TT |
17337 | maybe_set_alignment (cu, die, set_type); |
17338 | ||
f792889a | 17339 | return set_die_type (die, set_type, cu); |
72019c9c | 17340 | } |
7ca2d3a3 | 17341 | |
0971de02 TT |
17342 | /* A helper for read_common_block that creates a locexpr baton. |
17343 | SYM is the symbol which we are marking as computed. | |
17344 | COMMON_DIE is the DIE for the common block. | |
17345 | COMMON_LOC is the location expression attribute for the common | |
17346 | block itself. | |
17347 | MEMBER_LOC is the location expression attribute for the particular | |
17348 | member of the common block that we are processing. | |
17349 | CU is the CU from which the above come. */ | |
17350 | ||
17351 | static void | |
17352 | mark_common_block_symbol_computed (struct symbol *sym, | |
17353 | struct die_info *common_die, | |
17354 | struct attribute *common_loc, | |
17355 | struct attribute *member_loc, | |
17356 | struct dwarf2_cu *cu) | |
17357 | { | |
5e22e966 | 17358 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 17359 | struct objfile *objfile = per_objfile->objfile; |
0971de02 TT |
17360 | struct dwarf2_locexpr_baton *baton; |
17361 | gdb_byte *ptr; | |
17362 | unsigned int cu_off; | |
08feed99 | 17363 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
17364 | LONGEST offset = 0; |
17365 | ||
17366 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
17367 | gdb_assert (common_loc->form_is_block ()); |
17368 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 17369 | || member_loc->form_is_constant ()); |
0971de02 | 17370 | |
8d749320 | 17371 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 17372 | baton->per_objfile = per_objfile; |
0971de02 TT |
17373 | baton->per_cu = cu->per_cu; |
17374 | gdb_assert (baton->per_cu); | |
17375 | ||
17376 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
17377 | ||
cd6c91b4 | 17378 | if (member_loc->form_is_constant ()) |
0971de02 | 17379 | { |
0826b30a | 17380 | offset = member_loc->constant_value (0); |
0971de02 TT |
17381 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
17382 | } | |
17383 | else | |
9d2246fc | 17384 | baton->size += member_loc->as_block ()->size; |
0971de02 | 17385 | |
224c3ddb | 17386 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
17387 | baton->data = ptr; |
17388 | ||
17389 | *ptr++ = DW_OP_call4; | |
9c541725 | 17390 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
17391 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
17392 | ptr += 4; | |
17393 | ||
cd6c91b4 | 17394 | if (member_loc->form_is_constant ()) |
0971de02 TT |
17395 | { |
17396 | *ptr++ = DW_OP_addr; | |
17397 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
17398 | ptr += cu->header.addr_size; | |
17399 | } | |
17400 | else | |
17401 | { | |
17402 | /* We have to copy the data here, because DW_OP_call4 will only | |
17403 | use a DW_AT_location attribute. */ | |
9d2246fc TT |
17404 | struct dwarf_block *block = member_loc->as_block (); |
17405 | memcpy (ptr, block->data, block->size); | |
17406 | ptr += block->size; | |
0971de02 TT |
17407 | } |
17408 | ||
17409 | *ptr++ = DW_OP_plus; | |
17410 | gdb_assert (ptr - baton->data == baton->size); | |
17411 | ||
0971de02 | 17412 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 17413 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
17414 | } |
17415 | ||
4357ac6c TT |
17416 | /* Create appropriate locally-scoped variables for all the |
17417 | DW_TAG_common_block entries. Also create a struct common_block | |
17418 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 17419 | is used to separate the common blocks name namespace from regular |
4357ac6c | 17420 | variable names. */ |
c906108c SS |
17421 | |
17422 | static void | |
e7c27a73 | 17423 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17424 | { |
0971de02 TT |
17425 | struct attribute *attr; |
17426 | ||
17427 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 17428 | if (attr != nullptr) |
0971de02 TT |
17429 | { |
17430 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 17431 | if (attr->form_is_block ()) |
dda83cd7 | 17432 | { |
0971de02 | 17433 | /* Ok. */ |
dda83cd7 | 17434 | } |
cd6c91b4 | 17435 | else if (attr->form_is_section_offset ()) |
dda83cd7 | 17436 | { |
0971de02 TT |
17437 | dwarf2_complex_location_expr_complaint (); |
17438 | attr = NULL; | |
dda83cd7 | 17439 | } |
0971de02 | 17440 | else |
dda83cd7 | 17441 | { |
0971de02 TT |
17442 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
17443 | "common block member"); | |
17444 | attr = NULL; | |
dda83cd7 | 17445 | } |
0971de02 TT |
17446 | } |
17447 | ||
639d11d3 | 17448 | if (die->child != NULL) |
c906108c | 17449 | { |
5e22e966 | 17450 | struct objfile *objfile = cu->per_objfile->objfile; |
4357ac6c TT |
17451 | struct die_info *child_die; |
17452 | size_t n_entries = 0, size; | |
17453 | struct common_block *common_block; | |
17454 | struct symbol *sym; | |
74ac6d43 | 17455 | |
4357ac6c TT |
17456 | for (child_die = die->child; |
17457 | child_die && child_die->tag; | |
436c571c | 17458 | child_die = child_die->sibling) |
4357ac6c TT |
17459 | ++n_entries; |
17460 | ||
17461 | size = (sizeof (struct common_block) | |
17462 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
17463 | common_block |
17464 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
17465 | size); | |
4357ac6c TT |
17466 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
17467 | common_block->n_entries = 0; | |
17468 | ||
17469 | for (child_die = die->child; | |
17470 | child_die && child_die->tag; | |
436c571c | 17471 | child_die = child_die->sibling) |
4357ac6c TT |
17472 | { |
17473 | /* Create the symbol in the DW_TAG_common_block block in the current | |
17474 | symbol scope. */ | |
e7c27a73 | 17475 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
17476 | if (sym != NULL) |
17477 | { | |
17478 | struct attribute *member_loc; | |
17479 | ||
17480 | common_block->contents[common_block->n_entries++] = sym; | |
17481 | ||
17482 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
17483 | cu); | |
17484 | if (member_loc) | |
17485 | { | |
17486 | /* GDB has handled this for a long time, but it is | |
17487 | not specified by DWARF. It seems to have been | |
17488 | emitted by gfortran at least as recently as: | |
17489 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 17490 | complaint (_("Variable in common block has " |
0971de02 | 17491 | "DW_AT_data_member_location " |
9d8780f0 SM |
17492 | "- DIE at %s [in module %s]"), |
17493 | sect_offset_str (child_die->sect_off), | |
518817b3 | 17494 | objfile_name (objfile)); |
0971de02 | 17495 | |
cd6c91b4 | 17496 | if (member_loc->form_is_section_offset ()) |
0971de02 | 17497 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 17498 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 17499 | || member_loc->form_is_block ()) |
0971de02 | 17500 | { |
435d3d88 | 17501 | if (attr != nullptr) |
0971de02 TT |
17502 | mark_common_block_symbol_computed (sym, die, attr, |
17503 | member_loc, cu); | |
17504 | } | |
17505 | else | |
17506 | dwarf2_complex_location_expr_complaint (); | |
17507 | } | |
17508 | } | |
c906108c | 17509 | } |
4357ac6c TT |
17510 | |
17511 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
17512 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
17513 | } |
17514 | } | |
17515 | ||
0114d602 | 17516 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 17517 | |
0114d602 DJ |
17518 | static struct type * |
17519 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 17520 | { |
5e22e966 | 17521 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17522 | const char *previous_prefix, *name; |
9219021c | 17523 | int is_anonymous; |
0114d602 DJ |
17524 | struct type *type; |
17525 | ||
17526 | /* For extensions, reuse the type of the original namespace. */ | |
17527 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
17528 | { | |
17529 | struct die_info *ext_die; | |
17530 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 17531 | |
0114d602 DJ |
17532 | ext_die = dwarf2_extension (die, &ext_cu); |
17533 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
17534 | |
17535 | /* EXT_CU may not be the same as CU. | |
02142a6c | 17536 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
17537 | return set_die_type (die, type, cu); |
17538 | } | |
9219021c | 17539 | |
e142c38c | 17540 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
17541 | |
17542 | /* Now build the name of the current namespace. */ | |
17543 | ||
0114d602 DJ |
17544 | previous_prefix = determine_prefix (die, cu); |
17545 | if (previous_prefix[0] != '\0') | |
17546 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 17547 | previous_prefix, name, 0, cu); |
0114d602 DJ |
17548 | |
17549 | /* Create the type. */ | |
19f392bc | 17550 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 17551 | |
60531b24 | 17552 | return set_die_type (die, type, cu); |
0114d602 DJ |
17553 | } |
17554 | ||
22cee43f | 17555 | /* Read a namespace scope. */ |
0114d602 DJ |
17556 | |
17557 | static void | |
17558 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
17559 | { | |
5e22e966 | 17560 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17561 | int is_anonymous; |
9219021c | 17562 | |
5c4e30ca DC |
17563 | /* Add a symbol associated to this if we haven't seen the namespace |
17564 | before. Also, add a using directive if it's an anonymous | |
17565 | namespace. */ | |
9219021c | 17566 | |
f2f0e013 | 17567 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
17568 | { |
17569 | struct type *type; | |
17570 | ||
0114d602 | 17571 | type = read_type_die (die, cu); |
e7c27a73 | 17572 | new_symbol (die, type, cu); |
5c4e30ca | 17573 | |
e8e80198 | 17574 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 17575 | if (is_anonymous) |
0114d602 DJ |
17576 | { |
17577 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 17578 | |
eb1e02fd | 17579 | std::vector<const char *> excludes; |
804d2729 | 17580 | add_using_directive (using_directives (cu), |
7d93a1e0 | 17581 | previous_prefix, type->name (), NULL, |
eb1e02fd | 17582 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 17583 | } |
5c4e30ca | 17584 | } |
9219021c | 17585 | |
639d11d3 | 17586 | if (die->child != NULL) |
d9fa45fe | 17587 | { |
639d11d3 | 17588 | struct die_info *child_die = die->child; |
6e70227d | 17589 | |
d9fa45fe DC |
17590 | while (child_die && child_die->tag) |
17591 | { | |
e7c27a73 | 17592 | process_die (child_die, cu); |
436c571c | 17593 | child_die = child_die->sibling; |
d9fa45fe DC |
17594 | } |
17595 | } | |
38d518c9 EZ |
17596 | } |
17597 | ||
f55ee35c JK |
17598 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
17599 | imported module. Still we need that type as local Fortran "use ... only" | |
17600 | declaration imports depend on the created type in determine_prefix. */ | |
17601 | ||
17602 | static struct type * | |
17603 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
17604 | { | |
5e22e966 | 17605 | struct objfile *objfile = cu->per_objfile->objfile; |
15d034d0 | 17606 | const char *module_name; |
f55ee35c JK |
17607 | struct type *type; |
17608 | ||
17609 | module_name = dwarf2_name (die, cu); | |
19f392bc | 17610 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 17611 | |
f55ee35c JK |
17612 | return set_die_type (die, type, cu); |
17613 | } | |
17614 | ||
5d7cb8df JK |
17615 | /* Read a Fortran module. */ |
17616 | ||
17617 | static void | |
17618 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
17619 | { | |
17620 | struct die_info *child_die = die->child; | |
530e8392 KB |
17621 | struct type *type; |
17622 | ||
17623 | type = read_type_die (die, cu); | |
17624 | new_symbol (die, type, cu); | |
5d7cb8df | 17625 | |
5d7cb8df JK |
17626 | while (child_die && child_die->tag) |
17627 | { | |
17628 | process_die (child_die, cu); | |
436c571c | 17629 | child_die = child_die->sibling; |
5d7cb8df JK |
17630 | } |
17631 | } | |
17632 | ||
38d518c9 EZ |
17633 | /* Return the name of the namespace represented by DIE. Set |
17634 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
17635 | namespace. */ | |
17636 | ||
17637 | static const char * | |
e142c38c | 17638 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
17639 | { |
17640 | struct die_info *current_die; | |
17641 | const char *name = NULL; | |
17642 | ||
17643 | /* Loop through the extensions until we find a name. */ | |
17644 | ||
17645 | for (current_die = die; | |
17646 | current_die != NULL; | |
f2f0e013 | 17647 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 17648 | { |
96553a0c DE |
17649 | /* We don't use dwarf2_name here so that we can detect the absence |
17650 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 17651 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 17652 | |
38d518c9 EZ |
17653 | if (name != NULL) |
17654 | break; | |
17655 | } | |
17656 | ||
17657 | /* Is it an anonymous namespace? */ | |
17658 | ||
17659 | *is_anonymous = (name == NULL); | |
17660 | if (*is_anonymous) | |
2b1dbab0 | 17661 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
17662 | |
17663 | return name; | |
d9fa45fe DC |
17664 | } |
17665 | ||
c906108c SS |
17666 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
17667 | the user defined type vector. */ | |
17668 | ||
f792889a | 17669 | static struct type * |
e7c27a73 | 17670 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17671 | { |
5e22e966 | 17672 | struct gdbarch *gdbarch = cu->per_objfile->objfile->arch (); |
e7c27a73 | 17673 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 17674 | struct type *type; |
8b2dbe47 KB |
17675 | struct attribute *attr_byte_size; |
17676 | struct attribute *attr_address_class; | |
17677 | int byte_size, addr_class; | |
7e314c57 JK |
17678 | struct type *target_type; |
17679 | ||
17680 | target_type = die_type (die, cu); | |
c906108c | 17681 | |
7e314c57 JK |
17682 | /* The die_type call above may have already set the type for this DIE. */ |
17683 | type = get_die_type (die, cu); | |
17684 | if (type) | |
17685 | return type; | |
17686 | ||
17687 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17688 | |
e142c38c | 17689 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 | 17690 | if (attr_byte_size) |
529908cb | 17691 | byte_size = attr_byte_size->constant_value (cu_header->addr_size); |
c906108c | 17692 | else |
8b2dbe47 KB |
17693 | byte_size = cu_header->addr_size; |
17694 | ||
e142c38c | 17695 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 | 17696 | if (attr_address_class) |
529908cb | 17697 | addr_class = attr_address_class->constant_value (DW_ADDR_none); |
8b2dbe47 KB |
17698 | else |
17699 | addr_class = DW_ADDR_none; | |
17700 | ||
2b4424c3 TT |
17701 | ULONGEST alignment = get_alignment (cu, die); |
17702 | ||
17703 | /* If the pointer size, alignment, or address class is different | |
17704 | than the default, create a type variant marked as such and set | |
17705 | the length accordingly. */ | |
17706 | if (TYPE_LENGTH (type) != byte_size | |
17707 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17708 | && alignment != TYPE_RAW_ALIGN (type)) | |
17709 | || addr_class != DW_ADDR_none) | |
c906108c | 17710 | { |
5e2b427d | 17711 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 | 17712 | { |
314ad88d PA |
17713 | type_instance_flags type_flags |
17714 | = gdbarch_address_class_type_flags (gdbarch, byte_size, | |
17715 | addr_class); | |
876cecd0 TT |
17716 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17717 | == 0); | |
8b2dbe47 KB |
17718 | type = make_type_with_address_space (type, type_flags); |
17719 | } | |
17720 | else if (TYPE_LENGTH (type) != byte_size) | |
17721 | { | |
b98664d3 | 17722 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17723 | } |
2b4424c3 TT |
17724 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17725 | { | |
b98664d3 | 17726 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17727 | " - DIE at %s [in module %s]"), |
17728 | sect_offset_str (die->sect_off), | |
5e22e966 | 17729 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 17730 | } |
6e70227d | 17731 | else |
9a619af0 MS |
17732 | { |
17733 | /* Should we also complain about unhandled address classes? */ | |
17734 | } | |
c906108c | 17735 | } |
8b2dbe47 KB |
17736 | |
17737 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17738 | set_type_align (type, alignment); |
f792889a | 17739 | return set_die_type (die, type, cu); |
c906108c SS |
17740 | } |
17741 | ||
17742 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17743 | the user defined type vector. */ | |
17744 | ||
f792889a | 17745 | static struct type * |
e7c27a73 | 17746 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17747 | { |
17748 | struct type *type; | |
17749 | struct type *to_type; | |
17750 | struct type *domain; | |
17751 | ||
e7c27a73 DJ |
17752 | to_type = die_type (die, cu); |
17753 | domain = die_containing_type (die, cu); | |
0d5de010 | 17754 | |
7e314c57 JK |
17755 | /* The calls above may have already set the type for this DIE. */ |
17756 | type = get_die_type (die, cu); | |
17757 | if (type) | |
17758 | return type; | |
17759 | ||
78134374 | 17760 | if (check_typedef (to_type)->code () == TYPE_CODE_METHOD) |
0d5de010 | 17761 | type = lookup_methodptr_type (to_type); |
78134374 | 17762 | else if (check_typedef (to_type)->code () == TYPE_CODE_FUNC) |
7078baeb | 17763 | { |
5e22e966 | 17764 | struct type *new_type = alloc_type (cu->per_objfile->objfile); |
7078baeb TT |
17765 | |
17766 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
80fc5e77 | 17767 | to_type->fields (), to_type->num_fields (), |
a409645d | 17768 | to_type->has_varargs ()); |
7078baeb TT |
17769 | type = lookup_methodptr_type (new_type); |
17770 | } | |
0d5de010 DJ |
17771 | else |
17772 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17773 | |
f792889a | 17774 | return set_die_type (die, type, cu); |
c906108c SS |
17775 | } |
17776 | ||
4297a3f0 | 17777 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17778 | the user defined type vector. */ |
17779 | ||
f792889a | 17780 | static struct type * |
4297a3f0 | 17781 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
dda83cd7 | 17782 | enum type_code refcode) |
c906108c | 17783 | { |
e7c27a73 | 17784 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17785 | struct type *type, *target_type; |
c906108c SS |
17786 | struct attribute *attr; |
17787 | ||
4297a3f0 AV |
17788 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17789 | ||
7e314c57 JK |
17790 | target_type = die_type (die, cu); |
17791 | ||
17792 | /* The die_type call above may have already set the type for this DIE. */ | |
17793 | type = get_die_type (die, cu); | |
17794 | if (type) | |
17795 | return type; | |
17796 | ||
4297a3f0 | 17797 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17798 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17799 | if (attr != nullptr) |
c906108c | 17800 | { |
529908cb | 17801 | TYPE_LENGTH (type) = attr->constant_value (cu_header->addr_size); |
c906108c SS |
17802 | } |
17803 | else | |
17804 | { | |
107d2387 | 17805 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17806 | } |
2b4424c3 | 17807 | maybe_set_alignment (cu, die, type); |
f792889a | 17808 | return set_die_type (die, type, cu); |
c906108c SS |
17809 | } |
17810 | ||
cf363f18 MW |
17811 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17812 | outputs DWARF type qualifiers that apply to an array, not the | |
17813 | element type. But GDB relies on the array element type to carry | |
17814 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17815 | specification. */ | |
17816 | ||
17817 | static struct type * | |
17818 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17819 | struct type *base_type, int cnst, int voltl) | |
17820 | { | |
17821 | struct type *el_type, *inner_array; | |
17822 | ||
17823 | base_type = copy_type (base_type); | |
17824 | inner_array = base_type; | |
17825 | ||
78134374 | 17826 | while (TYPE_TARGET_TYPE (inner_array)->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17827 | { |
17828 | TYPE_TARGET_TYPE (inner_array) = | |
17829 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17830 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17831 | } | |
17832 | ||
17833 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17834 | cnst |= TYPE_CONST (el_type); | |
17835 | voltl |= TYPE_VOLATILE (el_type); | |
17836 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17837 | ||
17838 | return set_die_type (die, base_type, cu); | |
17839 | } | |
17840 | ||
f792889a | 17841 | static struct type * |
e7c27a73 | 17842 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17843 | { |
f792889a | 17844 | struct type *base_type, *cv_type; |
c906108c | 17845 | |
e7c27a73 | 17846 | base_type = die_type (die, cu); |
7e314c57 JK |
17847 | |
17848 | /* The die_type call above may have already set the type for this DIE. */ | |
17849 | cv_type = get_die_type (die, cu); | |
17850 | if (cv_type) | |
17851 | return cv_type; | |
17852 | ||
2f608a3a KW |
17853 | /* In case the const qualifier is applied to an array type, the element type |
17854 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
78134374 | 17855 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 | 17856 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17857 | |
f792889a DJ |
17858 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17859 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17860 | } |
17861 | ||
f792889a | 17862 | static struct type * |
e7c27a73 | 17863 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17864 | { |
f792889a | 17865 | struct type *base_type, *cv_type; |
c906108c | 17866 | |
e7c27a73 | 17867 | base_type = die_type (die, cu); |
7e314c57 JK |
17868 | |
17869 | /* The die_type call above may have already set the type for this DIE. */ | |
17870 | cv_type = get_die_type (die, cu); | |
17871 | if (cv_type) | |
17872 | return cv_type; | |
17873 | ||
cf363f18 MW |
17874 | /* In case the volatile qualifier is applied to an array type, the |
17875 | element type is so qualified, not the array type (section 6.7.3 | |
17876 | of C99). */ | |
78134374 | 17877 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
17878 | return add_array_cv_type (die, cu, base_type, 0, 1); |
17879 | ||
f792889a DJ |
17880 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17881 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17882 | } |
17883 | ||
06d66ee9 TT |
17884 | /* Handle DW_TAG_restrict_type. */ |
17885 | ||
17886 | static struct type * | |
17887 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17888 | { | |
17889 | struct type *base_type, *cv_type; | |
17890 | ||
17891 | base_type = die_type (die, cu); | |
17892 | ||
17893 | /* The die_type call above may have already set the type for this DIE. */ | |
17894 | cv_type = get_die_type (die, cu); | |
17895 | if (cv_type) | |
17896 | return cv_type; | |
17897 | ||
17898 | cv_type = make_restrict_type (base_type); | |
17899 | return set_die_type (die, cv_type, cu); | |
17900 | } | |
17901 | ||
a2c2acaf MW |
17902 | /* Handle DW_TAG_atomic_type. */ |
17903 | ||
17904 | static struct type * | |
17905 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17906 | { | |
17907 | struct type *base_type, *cv_type; | |
17908 | ||
17909 | base_type = die_type (die, cu); | |
17910 | ||
17911 | /* The die_type call above may have already set the type for this DIE. */ | |
17912 | cv_type = get_die_type (die, cu); | |
17913 | if (cv_type) | |
17914 | return cv_type; | |
17915 | ||
17916 | cv_type = make_atomic_type (base_type); | |
17917 | return set_die_type (die, cv_type, cu); | |
17918 | } | |
17919 | ||
c906108c SS |
17920 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17921 | the user defined type vector. It isn't really a user defined type, | |
17922 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17923 | attribute to reference it. */ | |
17924 | ||
f792889a | 17925 | static struct type * |
e7c27a73 | 17926 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17927 | { |
5e22e966 | 17928 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 17929 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
17930 | struct type *type, *range_type, *index_type, *char_type; |
17931 | struct attribute *attr; | |
216a7e6b AB |
17932 | struct dynamic_prop prop; |
17933 | bool length_is_constant = true; | |
17934 | LONGEST length; | |
17935 | ||
17936 | /* There are a couple of places where bit sizes might be made use of | |
17937 | when parsing a DW_TAG_string_type, however, no producer that we know | |
17938 | of make use of these. Handling bit sizes that are a multiple of the | |
17939 | byte size is easy enough, but what about other bit sizes? Lets deal | |
17940 | with that problem when we have to. Warn about these attributes being | |
17941 | unsupported, then parse the type and ignore them like we always | |
17942 | have. */ | |
17943 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
17944 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
17945 | { | |
17946 | static bool warning_printed = false; | |
17947 | if (!warning_printed) | |
17948 | { | |
17949 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
17950 | "currently supported on DW_TAG_string_type.")); | |
17951 | warning_printed = true; | |
17952 | } | |
17953 | } | |
c906108c | 17954 | |
e142c38c | 17955 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 17956 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
17957 | { |
17958 | /* The string length describes the location at which the length of | |
17959 | the string can be found. The size of the length field can be | |
17960 | specified with one of the attributes below. */ | |
17961 | struct type *prop_type; | |
17962 | struct attribute *len | |
17963 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
17964 | if (len == nullptr) | |
17965 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 17966 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
17967 | { |
17968 | /* Pass 0 as the default as we know this attribute is constant | |
17969 | and the default value will not be returned. */ | |
0826b30a | 17970 | LONGEST sz = len->constant_value (0); |
293e7e51 | 17971 | prop_type = cu->per_objfile->int_type (sz, true); |
216a7e6b AB |
17972 | } |
17973 | else | |
17974 | { | |
17975 | /* If the size is not specified then we assume it is the size of | |
17976 | an address on this target. */ | |
293e7e51 | 17977 | prop_type = cu->addr_sized_int_type (true); |
216a7e6b AB |
17978 | } |
17979 | ||
17980 | /* Convert the attribute into a dynamic property. */ | |
17981 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
17982 | length = 1; | |
17983 | else | |
17984 | length_is_constant = false; | |
17985 | } | |
17986 | else if (attr != nullptr) | |
17987 | { | |
17988 | /* This DW_AT_string_length just contains the length with no | |
17989 | indirection. There's no need to create a dynamic property in this | |
17990 | case. Pass 0 for the default value as we know it will not be | |
17991 | returned in this case. */ | |
0826b30a | 17992 | length = attr->constant_value (0); |
216a7e6b AB |
17993 | } |
17994 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 17995 | { |
216a7e6b | 17996 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 17997 | length = attr->constant_value (1); |
c906108c SS |
17998 | } |
17999 | else | |
18000 | { | |
216a7e6b AB |
18001 | /* Use 1 as a fallback length if we have nothing else. */ |
18002 | length = 1; | |
c906108c | 18003 | } |
6ccb9162 | 18004 | |
46bf5051 | 18005 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
18006 | if (length_is_constant) |
18007 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
18008 | else | |
18009 | { | |
18010 | struct dynamic_prop low_bound; | |
18011 | ||
8c2e4e06 | 18012 | low_bound.set_const_val (1); |
216a7e6b AB |
18013 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); |
18014 | } | |
3b7538c0 UW |
18015 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
18016 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 18017 | |
f792889a | 18018 | return set_die_type (die, type, cu); |
c906108c SS |
18019 | } |
18020 | ||
4d804846 JB |
18021 | /* Assuming that DIE corresponds to a function, returns nonzero |
18022 | if the function is prototyped. */ | |
18023 | ||
18024 | static int | |
18025 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
18026 | { | |
18027 | struct attribute *attr; | |
18028 | ||
18029 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
c45bc3f8 | 18030 | if (attr && attr->as_boolean ()) |
4d804846 JB |
18031 | return 1; |
18032 | ||
18033 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 18034 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
18035 | languages that allow unprototyped functions (Eg: Objective C). |
18036 | For all other languages, assume that functions are always | |
18037 | prototyped. */ | |
18038 | if (cu->language != language_c | |
18039 | && cu->language != language_objc | |
18040 | && cu->language != language_opencl) | |
18041 | return 1; | |
18042 | ||
18043 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
18044 | prototyped and unprototyped functions; default to prototyped, | |
18045 | since that is more common in modern code (and RealView warns | |
18046 | about unprototyped functions). */ | |
18047 | if (producer_is_realview (cu->producer)) | |
18048 | return 1; | |
18049 | ||
18050 | return 0; | |
18051 | } | |
18052 | ||
c906108c SS |
18053 | /* Handle DIES due to C code like: |
18054 | ||
18055 | struct foo | |
c5aa993b JM |
18056 | { |
18057 | int (*funcp)(int a, long l); | |
18058 | int b; | |
18059 | }; | |
c906108c | 18060 | |
0963b4bd | 18061 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 18062 | |
f792889a | 18063 | static struct type * |
e7c27a73 | 18064 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18065 | { |
5e22e966 | 18066 | struct objfile *objfile = cu->per_objfile->objfile; |
0963b4bd MS |
18067 | struct type *type; /* Type that this function returns. */ |
18068 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
18069 | struct attribute *attr; |
18070 | ||
e7c27a73 | 18071 | type = die_type (die, cu); |
7e314c57 JK |
18072 | |
18073 | /* The die_type call above may have already set the type for this DIE. */ | |
18074 | ftype = get_die_type (die, cu); | |
18075 | if (ftype) | |
18076 | return ftype; | |
18077 | ||
0c8b41f1 | 18078 | ftype = lookup_function_type (type); |
c906108c | 18079 | |
4d804846 | 18080 | if (prototyped_function_p (die, cu)) |
27e69b7a | 18081 | ftype->set_is_prototyped (true); |
c906108c | 18082 | |
c055b101 CV |
18083 | /* Store the calling convention in the type if it's available in |
18084 | the subroutine die. Otherwise set the calling convention to | |
18085 | the default value DW_CC_normal. */ | |
18086 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf | 18087 | if (attr != nullptr |
529908cb | 18088 | && is_valid_DW_AT_calling_convention_for_subroutine (attr->constant_value (0))) |
d0922fcf | 18089 | TYPE_CALLING_CONVENTION (ftype) |
529908cb | 18090 | = (enum dwarf_calling_convention) attr->constant_value (0); |
54fcddd0 UW |
18091 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
18092 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
18093 | else | |
18094 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 18095 | |
743649fd MW |
18096 | /* Record whether the function returns normally to its caller or not |
18097 | if the DWARF producer set that information. */ | |
18098 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
c45bc3f8 | 18099 | if (attr && attr->as_boolean ()) |
743649fd MW |
18100 | TYPE_NO_RETURN (ftype) = 1; |
18101 | ||
76c10ea2 GM |
18102 | /* We need to add the subroutine type to the die immediately so |
18103 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 18104 | declared as the same subroutine type. */ |
76c10ea2 | 18105 | set_die_type (die, ftype, cu); |
6e70227d | 18106 | |
639d11d3 | 18107 | if (die->child != NULL) |
c906108c | 18108 | { |
bb5ed363 | 18109 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 18110 | struct die_info *child_die; |
8072405b | 18111 | int nparams, iparams; |
c906108c SS |
18112 | |
18113 | /* Count the number of parameters. | |
dda83cd7 SM |
18114 | FIXME: GDB currently ignores vararg functions, but knows about |
18115 | vararg member functions. */ | |
8072405b | 18116 | nparams = 0; |
639d11d3 | 18117 | child_die = die->child; |
c906108c SS |
18118 | while (child_die && child_die->tag) |
18119 | { | |
18120 | if (child_die->tag == DW_TAG_formal_parameter) | |
18121 | nparams++; | |
18122 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
1d6286ed SM |
18123 | ftype->set_has_varargs (true); |
18124 | ||
436c571c | 18125 | child_die = child_die->sibling; |
c906108c SS |
18126 | } |
18127 | ||
18128 | /* Allocate storage for parameters and fill them in. */ | |
5e33d5f4 | 18129 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
18130 | ftype->set_fields |
18131 | ((struct field *) TYPE_ZALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 18132 | |
8072405b JK |
18133 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
18134 | even if we error out during the parameters reading below. */ | |
18135 | for (iparams = 0; iparams < nparams; iparams++) | |
5d14b6e5 | 18136 | ftype->field (iparams).set_type (void_type); |
8072405b JK |
18137 | |
18138 | iparams = 0; | |
639d11d3 | 18139 | child_die = die->child; |
c906108c SS |
18140 | while (child_die && child_die->tag) |
18141 | { | |
18142 | if (child_die->tag == DW_TAG_formal_parameter) | |
18143 | { | |
3ce3b1ba PA |
18144 | struct type *arg_type; |
18145 | ||
18146 | /* DWARF version 2 has no clean way to discern C++ | |
18147 | static and non-static member functions. G++ helps | |
18148 | GDB by marking the first parameter for non-static | |
18149 | member functions (which is the this pointer) as | |
18150 | artificial. We pass this information to | |
18151 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
18152 | ||
18153 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
18154 | 4.5 does not yet generate. */ | |
e142c38c | 18155 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 18156 | if (attr != nullptr) |
c45bc3f8 | 18157 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = attr->as_boolean (); |
c906108c | 18158 | else |
9c37b5ae | 18159 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
18160 | arg_type = die_type (child_die, cu); |
18161 | ||
18162 | /* RealView does not mark THIS as const, which the testsuite | |
18163 | expects. GCC marks THIS as const in method definitions, | |
18164 | but not in the class specifications (GCC PR 43053). */ | |
18165 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
18166 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
18167 | { | |
18168 | int is_this = 0; | |
18169 | struct dwarf2_cu *arg_cu = cu; | |
18170 | const char *name = dwarf2_name (child_die, cu); | |
18171 | ||
18172 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 18173 | if (attr != nullptr) |
3ce3b1ba PA |
18174 | { |
18175 | /* If the compiler emits this, use it. */ | |
18176 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
18177 | is_this = 1; | |
18178 | } | |
18179 | else if (name && strcmp (name, "this") == 0) | |
18180 | /* Function definitions will have the argument names. */ | |
18181 | is_this = 1; | |
18182 | else if (name == NULL && iparams == 0) | |
18183 | /* Declarations may not have the names, so like | |
18184 | elsewhere in GDB, assume an artificial first | |
18185 | argument is "this". */ | |
18186 | is_this = 1; | |
18187 | ||
18188 | if (is_this) | |
18189 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
18190 | arg_type, 0); | |
18191 | } | |
18192 | ||
5d14b6e5 | 18193 | ftype->field (iparams).set_type (arg_type); |
c906108c SS |
18194 | iparams++; |
18195 | } | |
436c571c | 18196 | child_die = child_die->sibling; |
c906108c SS |
18197 | } |
18198 | } | |
18199 | ||
76c10ea2 | 18200 | return ftype; |
c906108c SS |
18201 | } |
18202 | ||
f792889a | 18203 | static struct type * |
e7c27a73 | 18204 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18205 | { |
5e22e966 | 18206 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 18207 | const char *name = NULL; |
3c8e0968 | 18208 | struct type *this_type, *target_type; |
c906108c | 18209 | |
94af9270 | 18210 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc | 18211 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
8f53807e | 18212 | this_type->set_target_is_stub (true); |
f792889a | 18213 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
18214 | target_type = die_type (die, cu); |
18215 | if (target_type != this_type) | |
18216 | TYPE_TARGET_TYPE (this_type) = target_type; | |
18217 | else | |
18218 | { | |
18219 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
18220 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 18221 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
18222 | "- DIE at %s [in module %s]"), |
18223 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
18224 | TYPE_TARGET_TYPE (this_type) = NULL; |
18225 | } | |
e4003a34 TV |
18226 | if (name == NULL) |
18227 | { | |
18228 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
18229 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
18230 | Handle these by just returning the target type, rather than | |
18231 | constructing an anonymous typedef type and trying to handle this | |
18232 | elsewhere. */ | |
18233 | set_die_type (die, target_type, cu); | |
18234 | return target_type; | |
18235 | } | |
f792889a | 18236 | return this_type; |
c906108c SS |
18237 | } |
18238 | ||
a625a8c9 TT |
18239 | /* Helper for get_dwarf2_rational_constant that computes the value of |
18240 | a given gmp_mpz given an attribute. */ | |
18241 | ||
18242 | static void | |
18243 | get_mpz (struct dwarf2_cu *cu, gdb_mpz *value, struct attribute *attr) | |
18244 | { | |
18245 | /* GCC will sometimes emit a 16-byte constant value as a DWARF | |
18246 | location expression that pushes an implicit value. */ | |
18247 | if (attr->form == DW_FORM_exprloc) | |
18248 | { | |
18249 | dwarf_block *blk = attr->as_block (); | |
18250 | if (blk->size > 0 && blk->data[0] == DW_OP_implicit_value) | |
18251 | { | |
18252 | uint64_t len; | |
18253 | const gdb_byte *ptr = safe_read_uleb128 (blk->data + 1, | |
18254 | blk->data + blk->size, | |
18255 | &len); | |
18256 | if (ptr - blk->data + len <= blk->size) | |
18257 | { | |
18258 | mpz_import (value->val, len, | |
18259 | bfd_big_endian (cu->per_objfile->objfile->obfd) ? 1 : -1, | |
18260 | 1, 0, 0, ptr); | |
18261 | return; | |
18262 | } | |
18263 | } | |
18264 | ||
18265 | /* On failure set it to 1. */ | |
18266 | *value = gdb_mpz (1); | |
18267 | } | |
18268 | else if (attr->form_is_block ()) | |
18269 | { | |
18270 | dwarf_block *blk = attr->as_block (); | |
18271 | mpz_import (value->val, blk->size, | |
18272 | bfd_big_endian (cu->per_objfile->objfile->obfd) ? 1 : -1, | |
18273 | 1, 0, 0, blk->data); | |
18274 | } | |
18275 | else | |
18276 | *value = gdb_mpz (attr->constant_value (1)); | |
18277 | } | |
18278 | ||
09584414 JB |
18279 | /* Assuming DIE is a rational DW_TAG_constant, read the DIE's |
18280 | numerator and denominator into NUMERATOR and DENOMINATOR (resp). | |
18281 | ||
18282 | If the numerator and/or numerator attribute is missing, | |
18283 | a complaint is filed, and NUMERATOR and DENOMINATOR are left | |
18284 | untouched. */ | |
18285 | ||
18286 | static void | |
18287 | get_dwarf2_rational_constant (struct die_info *die, struct dwarf2_cu *cu, | |
5cde1d82 | 18288 | gdb_mpz *numerator, gdb_mpz *denominator) |
09584414 JB |
18289 | { |
18290 | struct attribute *num_attr, *denom_attr; | |
18291 | ||
18292 | num_attr = dwarf2_attr (die, DW_AT_GNU_numerator, cu); | |
18293 | if (num_attr == nullptr) | |
18294 | complaint (_("DW_AT_GNU_numerator missing in %s DIE at %s"), | |
18295 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18296 | ||
18297 | denom_attr = dwarf2_attr (die, DW_AT_GNU_denominator, cu); | |
18298 | if (denom_attr == nullptr) | |
18299 | complaint (_("DW_AT_GNU_denominator missing in %s DIE at %s"), | |
18300 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18301 | ||
18302 | if (num_attr == nullptr || denom_attr == nullptr) | |
18303 | return; | |
18304 | ||
a625a8c9 TT |
18305 | get_mpz (cu, numerator, num_attr); |
18306 | get_mpz (cu, denominator, denom_attr); | |
09584414 JB |
18307 | } |
18308 | ||
18309 | /* Same as get_dwarf2_rational_constant, but extracting an unsigned | |
18310 | rational constant, rather than a signed one. | |
18311 | ||
18312 | If the rational constant has a negative value, a complaint | |
18313 | is filed, and NUMERATOR and DENOMINATOR are left untouched. */ | |
18314 | ||
18315 | static void | |
18316 | get_dwarf2_unsigned_rational_constant (struct die_info *die, | |
18317 | struct dwarf2_cu *cu, | |
5cde1d82 TT |
18318 | gdb_mpz *numerator, |
18319 | gdb_mpz *denominator) | |
09584414 | 18320 | { |
5cde1d82 TT |
18321 | gdb_mpz num (1); |
18322 | gdb_mpz denom (1); | |
09584414 JB |
18323 | |
18324 | get_dwarf2_rational_constant (die, cu, &num, &denom); | |
5cde1d82 | 18325 | if (mpz_sgn (num.val) == -1 && mpz_sgn (denom.val) == -1) |
09584414 | 18326 | { |
5cde1d82 TT |
18327 | mpz_neg (num.val, num.val); |
18328 | mpz_neg (denom.val, denom.val); | |
09584414 | 18329 | } |
5cde1d82 | 18330 | else if (mpz_sgn (num.val) == -1) |
09584414 JB |
18331 | { |
18332 | complaint (_("unexpected negative value for DW_AT_GNU_numerator" | |
18333 | " in DIE at %s"), | |
18334 | sect_offset_str (die->sect_off)); | |
18335 | return; | |
18336 | } | |
5cde1d82 | 18337 | else if (mpz_sgn (denom.val) == -1) |
09584414 JB |
18338 | { |
18339 | complaint (_("unexpected negative value for DW_AT_GNU_denominator" | |
18340 | " in DIE at %s"), | |
18341 | sect_offset_str (die->sect_off)); | |
18342 | return; | |
18343 | } | |
18344 | ||
5cde1d82 TT |
18345 | *numerator = std::move (num); |
18346 | *denominator = std::move (denom); | |
09584414 JB |
18347 | } |
18348 | ||
bbcdf9ab TT |
18349 | /* Assuming that ENCODING is a string whose contents starting at the |
18350 | K'th character is "_nn" where "nn" is a decimal number, scan that | |
18351 | number and set RESULT to the value. K is updated to point to the | |
18352 | character immediately following the number. | |
18353 | ||
18354 | If the string does not conform to the format described above, false | |
18355 | is returned, and K may or may not be changed. */ | |
18356 | ||
18357 | static bool | |
18358 | ada_get_gnat_encoded_number (const char *encoding, int &k, gdb_mpz *result) | |
18359 | { | |
18360 | /* The next character should be an underscore ('_') followed | |
18361 | by a digit. */ | |
18362 | if (encoding[k] != '_' || !isdigit (encoding[k + 1])) | |
18363 | return false; | |
18364 | ||
18365 | /* Skip the underscore. */ | |
18366 | k++; | |
18367 | int start = k; | |
18368 | ||
18369 | /* Determine the number of digits for our number. */ | |
18370 | while (isdigit (encoding[k])) | |
18371 | k++; | |
18372 | if (k == start) | |
18373 | return false; | |
18374 | ||
18375 | std::string copy (&encoding[start], k - start); | |
18376 | if (mpz_set_str (result->val, copy.c_str (), 10) == -1) | |
18377 | return false; | |
18378 | ||
18379 | return true; | |
18380 | } | |
18381 | ||
18382 | /* Scan two numbers from ENCODING at OFFSET, assuming the string is of | |
18383 | the form _NN_DD, where NN and DD are decimal numbers. Set NUM and | |
18384 | DENOM, update OFFSET, and return true on success. Return false on | |
18385 | failure. */ | |
18386 | ||
18387 | static bool | |
18388 | ada_get_gnat_encoded_ratio (const char *encoding, int &offset, | |
18389 | gdb_mpz *num, gdb_mpz *denom) | |
18390 | { | |
18391 | if (!ada_get_gnat_encoded_number (encoding, offset, num)) | |
18392 | return false; | |
18393 | return ada_get_gnat_encoded_number (encoding, offset, denom); | |
18394 | } | |
18395 | ||
09584414 | 18396 | /* Assuming DIE corresponds to a fixed point type, finish the creation |
bbcdf9ab TT |
18397 | of the corresponding TYPE by setting its type-specific data. CU is |
18398 | the DIE's CU. SUFFIX is the "XF" type name suffix coming from GNAT | |
18399 | encodings. It is nullptr if the GNAT encoding should be | |
18400 | ignored. */ | |
09584414 JB |
18401 | |
18402 | static void | |
bbcdf9ab TT |
18403 | finish_fixed_point_type (struct type *type, const char *suffix, |
18404 | struct die_info *die, struct dwarf2_cu *cu) | |
09584414 | 18405 | { |
09584414 JB |
18406 | gdb_assert (type->code () == TYPE_CODE_FIXED_POINT |
18407 | && TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FIXED_POINT); | |
18408 | ||
bbcdf9ab TT |
18409 | /* If GNAT encodings are preferred, don't examine the |
18410 | attributes. */ | |
18411 | struct attribute *attr = nullptr; | |
18412 | if (suffix == nullptr) | |
18413 | { | |
18414 | attr = dwarf2_attr (die, DW_AT_binary_scale, cu); | |
18415 | if (attr == nullptr) | |
18416 | attr = dwarf2_attr (die, DW_AT_decimal_scale, cu); | |
18417 | if (attr == nullptr) | |
18418 | attr = dwarf2_attr (die, DW_AT_small, cu); | |
18419 | } | |
09584414 | 18420 | |
5cde1d82 TT |
18421 | /* Numerator and denominator of our fixed-point type's scaling factor. |
18422 | The default is a scaling factor of 1, which we use as a fallback | |
18423 | when we are not able to decode it (problem with the debugging info, | |
18424 | unsupported forms, bug in GDB, etc...). Using that as the default | |
18425 | allows us to at least print the unscaled value, which might still | |
18426 | be useful to a user. */ | |
18427 | gdb_mpz scale_num (1); | |
18428 | gdb_mpz scale_denom (1); | |
18429 | ||
09584414 JB |
18430 | if (attr == nullptr) |
18431 | { | |
bbcdf9ab TT |
18432 | int offset = 0; |
18433 | if (suffix != nullptr | |
18434 | && ada_get_gnat_encoded_ratio (suffix, offset, &scale_num, | |
18435 | &scale_denom) | |
18436 | /* The number might be encoded as _nn_dd_nn_dd, where the | |
18437 | second ratio is the 'small value. In this situation, we | |
18438 | want the second value. */ | |
18439 | && (suffix[offset] != '_' | |
18440 | || ada_get_gnat_encoded_ratio (suffix, offset, &scale_num, | |
18441 | &scale_denom))) | |
18442 | { | |
18443 | /* Found it. */ | |
18444 | } | |
18445 | else | |
18446 | { | |
18447 | /* Scaling factor not found. Assume a scaling factor of 1, | |
18448 | and hope for the best. At least the user will be able to | |
18449 | see the encoded value. */ | |
18450 | scale_num = 1; | |
18451 | scale_denom = 1; | |
18452 | complaint (_("no scale found for fixed-point type (DIE at %s)"), | |
18453 | sect_offset_str (die->sect_off)); | |
18454 | } | |
09584414 JB |
18455 | } |
18456 | else if (attr->name == DW_AT_binary_scale) | |
18457 | { | |
18458 | LONGEST scale_exp = attr->constant_value (0); | |
5cde1d82 | 18459 | gdb_mpz *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; |
09584414 | 18460 | |
5cde1d82 | 18461 | mpz_mul_2exp (num_or_denom->val, num_or_denom->val, std::abs (scale_exp)); |
09584414 JB |
18462 | } |
18463 | else if (attr->name == DW_AT_decimal_scale) | |
18464 | { | |
18465 | LONGEST scale_exp = attr->constant_value (0); | |
5cde1d82 | 18466 | gdb_mpz *num_or_denom = scale_exp > 0 ? &scale_num : &scale_denom; |
09584414 | 18467 | |
5cde1d82 | 18468 | mpz_ui_pow_ui (num_or_denom->val, 10, std::abs (scale_exp)); |
09584414 JB |
18469 | } |
18470 | else if (attr->name == DW_AT_small) | |
18471 | { | |
18472 | struct die_info *scale_die; | |
18473 | struct dwarf2_cu *scale_cu = cu; | |
18474 | ||
18475 | scale_die = follow_die_ref (die, attr, &scale_cu); | |
18476 | if (scale_die->tag == DW_TAG_constant) | |
18477 | get_dwarf2_unsigned_rational_constant (scale_die, scale_cu, | |
18478 | &scale_num, &scale_denom); | |
18479 | else | |
18480 | complaint (_("%s DIE not supported as target of DW_AT_small attribute" | |
18481 | " (DIE at %s)"), | |
18482 | dwarf_tag_name (die->tag), sect_offset_str (die->sect_off)); | |
18483 | } | |
18484 | else | |
18485 | { | |
18486 | complaint (_("unsupported scale attribute %s for fixed-point type" | |
18487 | " (DIE at %s)"), | |
18488 | dwarf_attr_name (attr->name), | |
18489 | sect_offset_str (die->sect_off)); | |
18490 | } | |
18491 | ||
2a12c336 | 18492 | gdb_mpq &scaling_factor = type->fixed_point_info ().scaling_factor; |
5cde1d82 TT |
18493 | mpz_set (mpq_numref (scaling_factor.val), scale_num.val); |
18494 | mpz_set (mpq_denref (scaling_factor.val), scale_denom.val); | |
09584414 JB |
18495 | mpq_canonicalize (scaling_factor.val); |
18496 | } | |
18497 | ||
bbcdf9ab TT |
18498 | /* The gnat-encoding suffix for fixed point. */ |
18499 | ||
18500 | #define GNAT_FIXED_POINT_SUFFIX "___XF_" | |
18501 | ||
18502 | /* If NAME encodes an Ada fixed-point type, return a pointer to the | |
18503 | "XF" suffix of the name. The text after this is what encodes the | |
18504 | 'small and 'delta information. Otherwise, return nullptr. */ | |
18505 | ||
18506 | static const char * | |
18507 | gnat_encoded_fixed_point_type_info (const char *name) | |
18508 | { | |
18509 | return strstr (name, GNAT_FIXED_POINT_SUFFIX); | |
18510 | } | |
18511 | ||
9b790ce7 UW |
18512 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
18513 | (which may be different from NAME) to the architecture back-end to allow | |
18514 | it to guess the correct format if necessary. */ | |
18515 | ||
18516 | static struct type * | |
18517 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 18518 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 18519 | { |
08feed99 | 18520 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
18521 | const struct floatformat **format; |
18522 | struct type *type; | |
18523 | ||
18524 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
18525 | if (format) | |
103a685e | 18526 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 18527 | else |
77b7c781 | 18528 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
18529 | |
18530 | return type; | |
18531 | } | |
18532 | ||
eb77c9df AB |
18533 | /* Allocate an integer type of size BITS and name NAME. */ |
18534 | ||
18535 | static struct type * | |
18536 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
18537 | int bits, int unsigned_p, const char *name) | |
18538 | { | |
18539 | struct type *type; | |
18540 | ||
18541 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
18542 | instead of using DW_TAG_unspecified_type. This has been seen on | |
18543 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
18544 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
18545 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
18546 | type = objfile_type (objfile)->builtin_void; |
18547 | else | |
18548 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
18549 | ||
18550 | return type; | |
18551 | } | |
18552 | ||
09584414 JB |
18553 | /* Return true if DIE has a DW_AT_small attribute whose value is |
18554 | a constant rational, where both the numerator and denominator | |
18555 | are equal to zero. | |
18556 | ||
18557 | CU is the DIE's Compilation Unit. */ | |
18558 | ||
18559 | static bool | |
18560 | has_zero_over_zero_small_attribute (struct die_info *die, | |
18561 | struct dwarf2_cu *cu) | |
18562 | { | |
18563 | struct attribute *attr = dwarf2_attr (die, DW_AT_small, cu); | |
18564 | if (attr == nullptr) | |
18565 | return false; | |
18566 | ||
18567 | struct dwarf2_cu *scale_cu = cu; | |
18568 | struct die_info *scale_die | |
18569 | = follow_die_ref (die, attr, &scale_cu); | |
18570 | ||
18571 | if (scale_die->tag != DW_TAG_constant) | |
18572 | return false; | |
18573 | ||
5cde1d82 | 18574 | gdb_mpz num (1), denom (1); |
09584414 | 18575 | get_dwarf2_rational_constant (scale_die, cu, &num, &denom); |
5cde1d82 | 18576 | return mpz_sgn (num.val) == 0 && mpz_sgn (denom.val) == 0; |
09584414 JB |
18577 | } |
18578 | ||
8bdc1658 AB |
18579 | /* Initialise and return a floating point type of size BITS suitable for |
18580 | use as a component of a complex number. The NAME_HINT is passed through | |
18581 | when initialising the floating point type and is the name of the complex | |
18582 | type. | |
18583 | ||
18584 | As DWARF doesn't currently provide an explicit name for the components | |
18585 | of a complex number, but it can be helpful to have these components | |
18586 | named, we try to select a suitable name based on the size of the | |
18587 | component. */ | |
18588 | static struct type * | |
18589 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
18590 | struct objfile *objfile, | |
103a685e TT |
18591 | int bits, const char *name_hint, |
18592 | enum bfd_endian byte_order) | |
8bdc1658 | 18593 | { |
08feed99 | 18594 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
18595 | struct type *tt = nullptr; |
18596 | ||
35add35e AB |
18597 | /* Try to find a suitable floating point builtin type of size BITS. |
18598 | We're going to use the name of this type as the name for the complex | |
18599 | target type that we are about to create. */ | |
1db455a7 | 18600 | switch (cu->language) |
8bdc1658 | 18601 | { |
1db455a7 AB |
18602 | case language_fortran: |
18603 | switch (bits) | |
18604 | { | |
18605 | case 32: | |
18606 | tt = builtin_f_type (gdbarch)->builtin_real; | |
18607 | break; | |
18608 | case 64: | |
18609 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
18610 | break; | |
18611 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18612 | case 128: | |
18613 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
18614 | break; | |
18615 | } | |
8bdc1658 | 18616 | break; |
1db455a7 AB |
18617 | default: |
18618 | switch (bits) | |
18619 | { | |
18620 | case 32: | |
18621 | tt = builtin_type (gdbarch)->builtin_float; | |
18622 | break; | |
18623 | case 64: | |
18624 | tt = builtin_type (gdbarch)->builtin_double; | |
18625 | break; | |
18626 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
18627 | case 128: | |
18628 | tt = builtin_type (gdbarch)->builtin_long_double; | |
18629 | break; | |
18630 | } | |
8bdc1658 AB |
18631 | break; |
18632 | } | |
18633 | ||
35add35e AB |
18634 | /* If the type we found doesn't match the size we were looking for, then |
18635 | pretend we didn't find a type at all, the complex target type we | |
18636 | create will then be nameless. */ | |
a12e5744 | 18637 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
18638 | tt = nullptr; |
18639 | ||
7d93a1e0 | 18640 | const char *name = (tt == nullptr) ? nullptr : tt->name (); |
103a685e | 18641 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
18642 | } |
18643 | ||
c906108c SS |
18644 | /* Find a representation of a given base type and install |
18645 | it in the TYPE field of the die. */ | |
18646 | ||
f792889a | 18647 | static struct type * |
e7c27a73 | 18648 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18649 | { |
5e22e966 | 18650 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
18651 | struct type *type; |
18652 | struct attribute *attr; | |
19f392bc | 18653 | int encoding = 0, bits = 0; |
15d034d0 | 18654 | const char *name; |
34877895 | 18655 | gdbarch *arch; |
c906108c | 18656 | |
e142c38c | 18657 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
529908cb TT |
18658 | if (attr != nullptr && attr->form_is_constant ()) |
18659 | encoding = attr->constant_value (0); | |
e142c38c | 18660 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 18661 | if (attr != nullptr) |
529908cb | 18662 | bits = attr->constant_value (0) * TARGET_CHAR_BIT; |
39cbfefa | 18663 | name = dwarf2_name (die, cu); |
6ccb9162 | 18664 | if (!name) |
34877895 | 18665 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 18666 | |
08feed99 | 18667 | arch = objfile->arch (); |
103a685e TT |
18668 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
18669 | ||
34877895 | 18670 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
529908cb | 18671 | if (attr != nullptr && attr->form_is_constant ()) |
103a685e | 18672 | { |
529908cb | 18673 | int endianity = attr->constant_value (0); |
103a685e TT |
18674 | |
18675 | switch (endianity) | |
18676 | { | |
18677 | case DW_END_big: | |
18678 | byte_order = BFD_ENDIAN_BIG; | |
18679 | break; | |
18680 | case DW_END_little: | |
18681 | byte_order = BFD_ENDIAN_LITTLE; | |
18682 | break; | |
18683 | default: | |
18684 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
18685 | break; | |
18686 | } | |
18687 | } | |
6ccb9162 | 18688 | |
09584414 JB |
18689 | if ((encoding == DW_ATE_signed_fixed || encoding == DW_ATE_unsigned_fixed) |
18690 | && cu->language == language_ada | |
18691 | && has_zero_over_zero_small_attribute (die, cu)) | |
18692 | { | |
18693 | /* brobecker/2018-02-24: This is a fixed point type for which | |
18694 | the scaling factor is represented as fraction whose value | |
18695 | does not make sense (zero divided by zero), so we should | |
18696 | normally never see these. However, there is a small category | |
18697 | of fixed point types for which GNAT is unable to provide | |
18698 | the scaling factor via the standard DWARF mechanisms, and | |
18699 | for which the info is provided via the GNAT encodings instead. | |
bbcdf9ab | 18700 | This is likely what this DIE is about. */ |
09584414 JB |
18701 | encoding = (encoding == DW_ATE_signed_fixed |
18702 | ? DW_ATE_signed | |
18703 | : DW_ATE_unsigned); | |
18704 | } | |
18705 | ||
bbcdf9ab TT |
18706 | /* With GNAT encodings, fixed-point information will be encoded in |
18707 | the type name. Note that this can also occur with the above | |
18708 | zero-over-zero case, which is why this is a separate "if" rather | |
18709 | than an "else if". */ | |
18710 | const char *gnat_encoding_suffix = nullptr; | |
18711 | if ((encoding == DW_ATE_signed || encoding == DW_ATE_unsigned) | |
18712 | && cu->language == language_ada | |
18713 | && name != nullptr) | |
18714 | { | |
18715 | gnat_encoding_suffix = gnat_encoded_fixed_point_type_info (name); | |
18716 | if (gnat_encoding_suffix != nullptr) | |
18717 | { | |
18718 | gdb_assert (startswith (gnat_encoding_suffix, | |
18719 | GNAT_FIXED_POINT_SUFFIX)); | |
18720 | name = obstack_strndup (&cu->per_objfile->objfile->objfile_obstack, | |
18721 | name, gnat_encoding_suffix - name); | |
18722 | /* Use -1 here so that SUFFIX points at the "_" after the | |
18723 | "XF". */ | |
18724 | gnat_encoding_suffix += strlen (GNAT_FIXED_POINT_SUFFIX) - 1; | |
18725 | ||
18726 | encoding = (encoding == DW_ATE_signed | |
18727 | ? DW_ATE_signed_fixed | |
18728 | : DW_ATE_unsigned_fixed); | |
18729 | } | |
18730 | } | |
18731 | ||
6ccb9162 | 18732 | switch (encoding) |
c906108c | 18733 | { |
6ccb9162 UW |
18734 | case DW_ATE_address: |
18735 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 18736 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 18737 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
18738 | break; |
18739 | case DW_ATE_boolean: | |
19f392bc | 18740 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
18741 | break; |
18742 | case DW_ATE_complex_float: | |
103a685e TT |
18743 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
18744 | byte_order); | |
78134374 | 18745 | if (type->code () == TYPE_CODE_ERROR) |
93689ce9 TT |
18746 | { |
18747 | if (name == nullptr) | |
18748 | { | |
18749 | struct obstack *obstack | |
5e22e966 | 18750 | = &cu->per_objfile->objfile->objfile_obstack; |
7d93a1e0 | 18751 | name = obconcat (obstack, "_Complex ", type->name (), |
93689ce9 TT |
18752 | nullptr); |
18753 | } | |
18754 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
18755 | } | |
18756 | else | |
18757 | type = init_complex_type (name, type); | |
6ccb9162 UW |
18758 | break; |
18759 | case DW_ATE_decimal_float: | |
19f392bc | 18760 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
18761 | break; |
18762 | case DW_ATE_float: | |
103a685e | 18763 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
18764 | break; |
18765 | case DW_ATE_signed: | |
eb77c9df | 18766 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18767 | break; |
18768 | case DW_ATE_unsigned: | |
3b2b8fea TT |
18769 | if (cu->language == language_fortran |
18770 | && name | |
61012eef | 18771 | && startswith (name, "character(")) |
19f392bc UW |
18772 | type = init_character_type (objfile, bits, 1, name); |
18773 | else | |
eb77c9df | 18774 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
18775 | break; |
18776 | case DW_ATE_signed_char: | |
6e70227d | 18777 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
18778 | || cu->language == language_pascal |
18779 | || cu->language == language_fortran) | |
19f392bc UW |
18780 | type = init_character_type (objfile, bits, 0, name); |
18781 | else | |
eb77c9df | 18782 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
18783 | break; |
18784 | case DW_ATE_unsigned_char: | |
868a0084 | 18785 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 18786 | || cu->language == language_pascal |
c44af4eb TT |
18787 | || cu->language == language_fortran |
18788 | || cu->language == language_rust) | |
19f392bc UW |
18789 | type = init_character_type (objfile, bits, 1, name); |
18790 | else | |
eb77c9df | 18791 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 18792 | break; |
75079b2b | 18793 | case DW_ATE_UTF: |
53e710ac | 18794 | { |
53e710ac PA |
18795 | if (bits == 16) |
18796 | type = builtin_type (arch)->builtin_char16; | |
18797 | else if (bits == 32) | |
18798 | type = builtin_type (arch)->builtin_char32; | |
18799 | else | |
18800 | { | |
b98664d3 | 18801 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 18802 | bits); |
eb77c9df | 18803 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
18804 | } |
18805 | return set_die_type (die, type, cu); | |
18806 | } | |
75079b2b | 18807 | break; |
09584414 JB |
18808 | case DW_ATE_signed_fixed: |
18809 | type = init_fixed_point_type (objfile, bits, 0, name); | |
bbcdf9ab | 18810 | finish_fixed_point_type (type, gnat_encoding_suffix, die, cu); |
09584414 JB |
18811 | break; |
18812 | case DW_ATE_unsigned_fixed: | |
18813 | type = init_fixed_point_type (objfile, bits, 1, name); | |
bbcdf9ab | 18814 | finish_fixed_point_type (type, gnat_encoding_suffix, die, cu); |
09584414 | 18815 | break; |
75079b2b | 18816 | |
6ccb9162 | 18817 | default: |
b98664d3 | 18818 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 18819 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 18820 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 18821 | break; |
c906108c | 18822 | } |
6ccb9162 | 18823 | |
0114d602 | 18824 | if (name && strcmp (name, "char") == 0) |
15152a54 | 18825 | type->set_has_no_signedness (true); |
0114d602 | 18826 | |
2b4424c3 TT |
18827 | maybe_set_alignment (cu, die, type); |
18828 | ||
db558e34 | 18829 | type->set_endianity_is_not_default (gdbarch_byte_order (arch) != byte_order); |
34877895 | 18830 | |
20a5fcbd TT |
18831 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_INT) |
18832 | { | |
18833 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); | |
529908cb | 18834 | if (attr != nullptr && attr->as_unsigned () <= 8 * TYPE_LENGTH (type)) |
20a5fcbd | 18835 | { |
529908cb | 18836 | unsigned real_bit_size = attr->as_unsigned (); |
20a5fcbd TT |
18837 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
18838 | /* Only use the attributes if they make sense together. */ | |
18839 | if (attr == nullptr | |
529908cb TT |
18840 | || (attr->as_unsigned () + real_bit_size |
18841 | <= 8 * TYPE_LENGTH (type))) | |
20a5fcbd TT |
18842 | { |
18843 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_size | |
18844 | = real_bit_size; | |
18845 | if (attr != nullptr) | |
18846 | TYPE_MAIN_TYPE (type)->type_specific.int_stuff.bit_offset | |
529908cb | 18847 | = attr->as_unsigned (); |
20a5fcbd TT |
18848 | } |
18849 | } | |
18850 | } | |
18851 | ||
f792889a | 18852 | return set_die_type (die, type, cu); |
c906108c SS |
18853 | } |
18854 | ||
80180f79 SA |
18855 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
18856 | resulting value of the attribute into struct bound_prop. | |
18857 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
18858 | ||
18859 | static int | |
18860 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
18861 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
18862 | struct type *default_type) | |
80180f79 SA |
18863 | { |
18864 | struct dwarf2_property_baton *baton; | |
5e22e966 | 18865 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba TT |
18866 | struct objfile *objfile = per_objfile->objfile; |
18867 | struct obstack *obstack = &objfile->objfile_obstack; | |
80180f79 | 18868 | |
9a49df9d AB |
18869 | gdb_assert (default_type != NULL); |
18870 | ||
80180f79 SA |
18871 | if (attr == NULL || prop == NULL) |
18872 | return 0; | |
18873 | ||
4fc6c0d5 | 18874 | if (attr->form_is_block ()) |
80180f79 | 18875 | { |
8d749320 | 18876 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18877 | baton->property_type = default_type; |
80180f79 | 18878 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18879 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18880 | |
18881 | struct dwarf_block *block = attr->as_block (); | |
18882 | baton->locexpr.size = block->size; | |
18883 | baton->locexpr.data = block->data; | |
216a7e6b AB |
18884 | switch (attr->name) |
18885 | { | |
18886 | case DW_AT_string_length: | |
18887 | baton->locexpr.is_reference = true; | |
18888 | break; | |
18889 | default: | |
18890 | baton->locexpr.is_reference = false; | |
18891 | break; | |
18892 | } | |
8c2e4e06 SM |
18893 | |
18894 | prop->set_locexpr (baton); | |
18895 | gdb_assert (prop->baton () != NULL); | |
80180f79 | 18896 | } |
cd6c91b4 | 18897 | else if (attr->form_is_ref ()) |
80180f79 SA |
18898 | { |
18899 | struct dwarf2_cu *target_cu = cu; | |
18900 | struct die_info *target_die; | |
18901 | struct attribute *target_attr; | |
18902 | ||
18903 | target_die = follow_die_ref (die, attr, &target_cu); | |
18904 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
18905 | if (target_attr == NULL) |
18906 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
18907 | target_cu); | |
80180f79 SA |
18908 | if (target_attr == NULL) |
18909 | return 0; | |
18910 | ||
df25ebbd | 18911 | switch (target_attr->name) |
80180f79 | 18912 | { |
df25ebbd | 18913 | case DW_AT_location: |
cd6c91b4 | 18914 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 18915 | { |
8d749320 | 18916 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18917 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18918 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
8c2e4e06 SM |
18919 | prop->set_loclist (baton); |
18920 | gdb_assert (prop->baton () != NULL); | |
df25ebbd | 18921 | } |
4fc6c0d5 | 18922 | else if (target_attr->form_is_block ()) |
df25ebbd | 18923 | { |
8d749320 | 18924 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18925 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 18926 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 18927 | baton->locexpr.per_objfile = per_objfile; |
9d2246fc TT |
18928 | struct dwarf_block *block = target_attr->as_block (); |
18929 | baton->locexpr.size = block->size; | |
18930 | baton->locexpr.data = block->data; | |
9a49df9d | 18931 | baton->locexpr.is_reference = true; |
8c2e4e06 SM |
18932 | prop->set_locexpr (baton); |
18933 | gdb_assert (prop->baton () != NULL); | |
df25ebbd JB |
18934 | } |
18935 | else | |
18936 | { | |
18937 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
18938 | "dynamic property"); | |
18939 | return 0; | |
18940 | } | |
18941 | break; | |
18942 | case DW_AT_data_member_location: | |
18943 | { | |
18944 | LONGEST offset; | |
18945 | ||
18946 | if (!handle_data_member_location (target_die, target_cu, | |
18947 | &offset)) | |
18948 | return 0; | |
18949 | ||
8d749320 | 18950 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 18951 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 18952 | target_cu); |
df25ebbd JB |
18953 | baton->offset_info.offset = offset; |
18954 | baton->offset_info.type = die_type (target_die, target_cu); | |
8c2e4e06 | 18955 | prop->set_addr_offset (baton); |
df25ebbd JB |
18956 | break; |
18957 | } | |
80180f79 SA |
18958 | } |
18959 | } | |
cd6c91b4 | 18960 | else if (attr->form_is_constant ()) |
8c2e4e06 | 18961 | prop->set_const_val (attr->constant_value (0)); |
80180f79 SA |
18962 | else |
18963 | { | |
18964 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
18965 | dwarf2_name (die, cu)); | |
18966 | return 0; | |
18967 | } | |
18968 | ||
18969 | return 1; | |
18970 | } | |
18971 | ||
09ba997f | 18972 | /* See read.h. */ |
9a49df9d | 18973 | |
09ba997f | 18974 | struct type * |
293e7e51 | 18975 | dwarf2_per_objfile::int_type (int size_in_bytes, bool unsigned_p) const |
9a49df9d | 18976 | { |
9a49df9d AB |
18977 | struct type *int_type; |
18978 | ||
18979 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
18980 | #define TRY_TYPE(F) \ |
18981 | int_type = (unsigned_p \ | |
18982 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
18983 | : objfile_type (objfile)->builtin_ ## F); \ | |
18984 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
18985 | return int_type |
18986 | ||
18987 | TRY_TYPE (char); | |
18988 | TRY_TYPE (short); | |
18989 | TRY_TYPE (int); | |
18990 | TRY_TYPE (long); | |
18991 | TRY_TYPE (long_long); | |
18992 | ||
18993 | #undef TRY_TYPE | |
18994 | ||
18995 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
18996 | } | |
18997 | ||
09ba997f | 18998 | /* See read.h. */ |
11a8b164 | 18999 | |
09ba997f | 19000 | struct type * |
293e7e51 | 19001 | dwarf2_cu::addr_sized_int_type (bool unsigned_p) const |
11a8b164 | 19002 | { |
293e7e51 SM |
19003 | int addr_size = this->per_cu->addr_size (); |
19004 | return this->per_objfile->int_type (addr_size, unsigned_p); | |
11a8b164 AB |
19005 | } |
19006 | ||
b86352cf AB |
19007 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
19008 | present (which is valid) then compute the default type based on the | |
19009 | compilation units address size. */ | |
19010 | ||
19011 | static struct type * | |
19012 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
19013 | { | |
19014 | struct type *index_type = die_type (die, cu); | |
19015 | ||
19016 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
19017 | without specifying a base type. | |
19018 | In that case, the base type must be set to the type of | |
19019 | the lower bound, upper bound or count, in that order, if any of these | |
19020 | three attributes references an object that has a type. | |
19021 | If no base type is found, the Dwarf-2 specifications say that | |
19022 | a signed integer type of size equal to the size of an address should | |
19023 | be used. | |
19024 | For the following C code: `extern char gdb_int [];' | |
19025 | GCC produces an empty range DIE. | |
19026 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
19027 | high bound or count are not yet handled by this code. */ | |
78134374 | 19028 | if (index_type->code () == TYPE_CODE_VOID) |
293e7e51 | 19029 | index_type = cu->addr_sized_int_type (false); |
b86352cf AB |
19030 | |
19031 | return index_type; | |
19032 | } | |
19033 | ||
a02abb62 JB |
19034 | /* Read the given DW_AT_subrange DIE. */ |
19035 | ||
f792889a | 19036 | static struct type * |
a02abb62 JB |
19037 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
19038 | { | |
4c9ad8c2 | 19039 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
19040 | struct type *range_type; |
19041 | struct attribute *attr; | |
729efb13 | 19042 | struct dynamic_prop low, high; |
4fae6e18 | 19043 | int low_default_is_valid; |
c451ebe5 | 19044 | int high_bound_is_count = 0; |
15d034d0 | 19045 | const char *name; |
d359392f | 19046 | ULONGEST negative_mask; |
e77813c8 | 19047 | |
b86352cf AB |
19048 | orig_base_type = read_subrange_index_type (die, cu); |
19049 | ||
4c9ad8c2 TT |
19050 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
19051 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
19052 | creating the range type, but we use the result of check_typedef | |
19053 | when examining properties of the type. */ | |
19054 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 19055 | |
7e314c57 JK |
19056 | /* The die_type call above may have already set the type for this DIE. */ |
19057 | range_type = get_die_type (die, cu); | |
19058 | if (range_type) | |
19059 | return range_type; | |
19060 | ||
8c2e4e06 | 19061 | high.set_const_val (0); |
729efb13 | 19062 | |
4fae6e18 JK |
19063 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
19064 | omitting DW_AT_lower_bound. */ | |
19065 | switch (cu->language) | |
6e70227d | 19066 | { |
4fae6e18 JK |
19067 | case language_c: |
19068 | case language_cplus: | |
8c2e4e06 | 19069 | low.set_const_val (0); |
4fae6e18 JK |
19070 | low_default_is_valid = 1; |
19071 | break; | |
19072 | case language_fortran: | |
8c2e4e06 | 19073 | low.set_const_val (1); |
4fae6e18 JK |
19074 | low_default_is_valid = 1; |
19075 | break; | |
19076 | case language_d: | |
4fae6e18 | 19077 | case language_objc: |
c44af4eb | 19078 | case language_rust: |
8c2e4e06 | 19079 | low.set_const_val (0); |
4fae6e18 JK |
19080 | low_default_is_valid = (cu->header.version >= 4); |
19081 | break; | |
19082 | case language_ada: | |
19083 | case language_m2: | |
19084 | case language_pascal: | |
8c2e4e06 | 19085 | low.set_const_val (1); |
4fae6e18 JK |
19086 | low_default_is_valid = (cu->header.version >= 4); |
19087 | break; | |
19088 | default: | |
8c2e4e06 | 19089 | low.set_const_val (0); |
4fae6e18 JK |
19090 | low_default_is_valid = 0; |
19091 | break; | |
a02abb62 JB |
19092 | } |
19093 | ||
e142c38c | 19094 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 19095 | if (attr != nullptr) |
9a49df9d | 19096 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 19097 | else if (!low_default_is_valid) |
b98664d3 | 19098 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
19099 | "- DIE at %s [in module %s]"), |
19100 | sect_offset_str (die->sect_off), | |
5e22e966 | 19101 | objfile_name (cu->per_objfile->objfile)); |
a02abb62 | 19102 | |
506f5c41 TV |
19103 | struct attribute *attr_ub, *attr_count; |
19104 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 19105 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 19106 | { |
506f5c41 | 19107 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 19108 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 19109 | { |
c451ebe5 | 19110 | /* If bounds are constant do the final calculation here. */ |
8c2e4e06 SM |
19111 | if (low.kind () == PROP_CONST && high.kind () == PROP_CONST) |
19112 | high.set_const_val (low.const_val () + high.const_val () - 1); | |
c451ebe5 SA |
19113 | else |
19114 | high_bound_is_count = 1; | |
c2ff108b | 19115 | } |
506f5c41 TV |
19116 | else |
19117 | { | |
19118 | if (attr_ub != NULL) | |
19119 | complaint (_("Unresolved DW_AT_upper_bound " | |
19120 | "- DIE at %s [in module %s]"), | |
19121 | sect_offset_str (die->sect_off), | |
5e22e966 | 19122 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 TV |
19123 | if (attr_count != NULL) |
19124 | complaint (_("Unresolved DW_AT_count " | |
19125 | "- DIE at %s [in module %s]"), | |
19126 | sect_offset_str (die->sect_off), | |
5e22e966 | 19127 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 | 19128 | } |
e77813c8 | 19129 | } |
a02abb62 | 19130 | |
4e962e74 TT |
19131 | LONGEST bias = 0; |
19132 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 19133 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 19134 | bias = bias_attr->constant_value (0); |
4e962e74 | 19135 | |
dbb9c2b1 JB |
19136 | /* Normally, the DWARF producers are expected to use a signed |
19137 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
19138 | But this is unfortunately not always the case, as witnessed | |
19139 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
19140 | is used instead. To work around that ambiguity, we treat | |
19141 | the bounds as signed, and thus sign-extend their values, when | |
19142 | the base type is signed. */ | |
6e70227d | 19143 | negative_mask = |
d359392f | 19144 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
8c2e4e06 | 19145 | if (low.kind () == PROP_CONST |
c6d940a9 | 19146 | && !base_type->is_unsigned () && (low.const_val () & negative_mask)) |
8c2e4e06 SM |
19147 | low.set_const_val (low.const_val () | negative_mask); |
19148 | if (high.kind () == PROP_CONST | |
c6d940a9 | 19149 | && !base_type->is_unsigned () && (high.const_val () & negative_mask)) |
8c2e4e06 | 19150 | high.set_const_val (high.const_val () | negative_mask); |
43bbcdc2 | 19151 | |
5bbd8269 AB |
19152 | /* Check for bit and byte strides. */ |
19153 | struct dynamic_prop byte_stride_prop; | |
19154 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
19155 | if (attr_byte_stride != nullptr) | |
19156 | { | |
293e7e51 | 19157 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
19158 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
19159 | prop_type); | |
19160 | } | |
19161 | ||
19162 | struct dynamic_prop bit_stride_prop; | |
19163 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
19164 | if (attr_bit_stride != nullptr) | |
19165 | { | |
19166 | /* It only makes sense to have either a bit or byte stride. */ | |
19167 | if (attr_byte_stride != nullptr) | |
19168 | { | |
19169 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
19170 | "- DIE at %s [in module %s]"), | |
19171 | sect_offset_str (die->sect_off), | |
5e22e966 | 19172 | objfile_name (cu->per_objfile->objfile)); |
5bbd8269 AB |
19173 | attr_bit_stride = nullptr; |
19174 | } | |
19175 | else | |
19176 | { | |
293e7e51 | 19177 | struct type *prop_type = cu->addr_sized_int_type (false); |
5bbd8269 AB |
19178 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
19179 | prop_type); | |
19180 | } | |
19181 | } | |
19182 | ||
19183 | if (attr_byte_stride != nullptr | |
19184 | || attr_bit_stride != nullptr) | |
19185 | { | |
19186 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
19187 | struct dynamic_prop *stride | |
19188 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
19189 | ||
19190 | range_type | |
19191 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
19192 | &high, bias, stride, byte_stride_p); | |
19193 | } | |
19194 | else | |
19195 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 19196 | |
c451ebe5 | 19197 | if (high_bound_is_count) |
599088e3 | 19198 | range_type->bounds ()->flag_upper_bound_is_count = 1; |
c451ebe5 | 19199 | |
c2ff108b JK |
19200 | /* Ada expects an empty array on no boundary attributes. */ |
19201 | if (attr == NULL && cu->language != language_ada) | |
8c2e4e06 | 19202 | range_type->bounds ()->high.set_undefined (); |
c2ff108b | 19203 | |
39cbfefa DJ |
19204 | name = dwarf2_name (die, cu); |
19205 | if (name) | |
d0e39ea2 | 19206 | range_type->set_name (name); |
6e70227d | 19207 | |
e142c38c | 19208 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 19209 | if (attr != nullptr) |
529908cb | 19210 | TYPE_LENGTH (range_type) = attr->constant_value (0); |
a02abb62 | 19211 | |
2b4424c3 TT |
19212 | maybe_set_alignment (cu, die, range_type); |
19213 | ||
7e314c57 JK |
19214 | set_die_type (die, range_type, cu); |
19215 | ||
19216 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
19217 | set_descriptive_type (range_type, die, cu); |
19218 | ||
7e314c57 | 19219 | return range_type; |
a02abb62 | 19220 | } |
6e70227d | 19221 | |
f792889a | 19222 | static struct type * |
81a17f79 JB |
19223 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
19224 | { | |
19225 | struct type *type; | |
81a17f79 | 19226 | |
5e22e966 | 19227 | type = init_type (cu->per_objfile->objfile, TYPE_CODE_VOID, 0, NULL); |
d0e39ea2 | 19228 | type->set_name (dwarf2_name (die, cu)); |
81a17f79 | 19229 | |
74a2f8ff | 19230 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 19231 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
19232 | such a type, we treat it as a stub, and try to resolve it later on, |
19233 | when needed. */ | |
19234 | if (cu->language == language_ada) | |
b4b73759 | 19235 | type->set_is_stub (true); |
74a2f8ff | 19236 | |
f792889a | 19237 | return set_die_type (die, type, cu); |
81a17f79 | 19238 | } |
a02abb62 | 19239 | |
639d11d3 DC |
19240 | /* Read a single die and all its descendents. Set the die's sibling |
19241 | field to NULL; set other fields in the die correctly, and set all | |
19242 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
19243 | location of the info_ptr after reading all of those dies. PARENT | |
19244 | is the parent of the die in question. */ | |
19245 | ||
19246 | static struct die_info * | |
dee91e82 | 19247 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
19248 | const gdb_byte *info_ptr, |
19249 | const gdb_byte **new_info_ptr, | |
dee91e82 | 19250 | struct die_info *parent) |
639d11d3 DC |
19251 | { |
19252 | struct die_info *die; | |
d521ce57 | 19253 | const gdb_byte *cur_ptr; |
639d11d3 | 19254 | |
3e225074 | 19255 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
19256 | if (die == NULL) |
19257 | { | |
19258 | *new_info_ptr = cur_ptr; | |
19259 | return NULL; | |
19260 | } | |
93311388 | 19261 | store_in_ref_table (die, reader->cu); |
639d11d3 | 19262 | |
3e225074 | 19263 | if (die->has_children) |
bf6af496 | 19264 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
19265 | else |
19266 | { | |
19267 | die->child = NULL; | |
19268 | *new_info_ptr = cur_ptr; | |
19269 | } | |
19270 | ||
19271 | die->sibling = NULL; | |
19272 | die->parent = parent; | |
19273 | return die; | |
19274 | } | |
19275 | ||
19276 | /* Read a die, all of its descendents, and all of its siblings; set | |
19277 | all of the fields of all of the dies correctly. Arguments are as | |
19278 | in read_die_and_children. */ | |
19279 | ||
19280 | static struct die_info * | |
bf6af496 | 19281 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
19282 | const gdb_byte *info_ptr, |
19283 | const gdb_byte **new_info_ptr, | |
bf6af496 | 19284 | struct die_info *parent) |
639d11d3 DC |
19285 | { |
19286 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 19287 | const gdb_byte *cur_ptr; |
639d11d3 | 19288 | |
c906108c | 19289 | cur_ptr = info_ptr; |
639d11d3 DC |
19290 | first_die = last_sibling = NULL; |
19291 | ||
19292 | while (1) | |
c906108c | 19293 | { |
639d11d3 | 19294 | struct die_info *die |
dee91e82 | 19295 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 19296 | |
1d325ec1 | 19297 | if (die == NULL) |
c906108c | 19298 | { |
639d11d3 DC |
19299 | *new_info_ptr = cur_ptr; |
19300 | return first_die; | |
c906108c | 19301 | } |
1d325ec1 DJ |
19302 | |
19303 | if (!first_die) | |
19304 | first_die = die; | |
c906108c | 19305 | else |
1d325ec1 DJ |
19306 | last_sibling->sibling = die; |
19307 | ||
19308 | last_sibling = die; | |
c906108c | 19309 | } |
c906108c SS |
19310 | } |
19311 | ||
bf6af496 DE |
19312 | /* Read a die, all of its descendents, and all of its siblings; set |
19313 | all of the fields of all of the dies correctly. Arguments are as | |
19314 | in read_die_and_children. | |
19315 | This the main entry point for reading a DIE and all its children. */ | |
19316 | ||
19317 | static struct die_info * | |
19318 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
19319 | const gdb_byte *info_ptr, |
19320 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
19321 | struct die_info *parent) |
19322 | { | |
19323 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
19324 | new_info_ptr, parent); | |
19325 | ||
b4f54984 | 19326 | if (dwarf_die_debug) |
bf6af496 DE |
19327 | { |
19328 | fprintf_unfiltered (gdb_stdlog, | |
19329 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 19330 | reader->die_section->get_name (), |
bf6af496 DE |
19331 | (unsigned) (info_ptr - reader->die_section->buffer), |
19332 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 19333 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
19334 | } |
19335 | ||
19336 | return die; | |
19337 | } | |
19338 | ||
3019eac3 DE |
19339 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
19340 | attributes. | |
19341 | The caller is responsible for filling in the extra attributes | |
19342 | and updating (*DIEP)->num_attrs. | |
19343 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 19344 | except for its child, sibling, and parent fields. */ |
93311388 | 19345 | |
d521ce57 | 19346 | static const gdb_byte * |
3019eac3 | 19347 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 19348 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 19349 | int num_extra_attrs) |
93311388 | 19350 | { |
b64f50a1 | 19351 | unsigned int abbrev_number, bytes_read, i; |
7c32eebb | 19352 | const struct abbrev_info *abbrev; |
93311388 DE |
19353 | struct die_info *die; |
19354 | struct dwarf2_cu *cu = reader->cu; | |
19355 | bfd *abfd = reader->abfd; | |
19356 | ||
9c541725 | 19357 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
19358 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19359 | info_ptr += bytes_read; | |
19360 | if (!abbrev_number) | |
19361 | { | |
19362 | *diep = NULL; | |
93311388 DE |
19363 | return info_ptr; |
19364 | } | |
19365 | ||
685af9cd | 19366 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 19367 | if (!abbrev) |
348e048f DE |
19368 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
19369 | abbrev_number, | |
19370 | bfd_get_filename (abfd)); | |
19371 | ||
3019eac3 | 19372 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 19373 | die->sect_off = sect_off; |
93311388 DE |
19374 | die->tag = abbrev->tag; |
19375 | die->abbrev = abbrev_number; | |
3e225074 | 19376 | die->has_children = abbrev->has_children; |
93311388 | 19377 | |
3019eac3 DE |
19378 | /* Make the result usable. |
19379 | The caller needs to update num_attrs after adding the extra | |
19380 | attributes. */ | |
93311388 DE |
19381 | die->num_attrs = abbrev->num_attrs; |
19382 | ||
7a5f294d | 19383 | bool any_need_reprocess = false; |
93311388 | 19384 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e | 19385 | { |
7a5f294d TT |
19386 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
19387 | info_ptr); | |
19388 | if (die->attrs[i].requires_reprocessing_p ()) | |
19389 | any_need_reprocess = true; | |
18a8505e AT |
19390 | } |
19391 | ||
052c8bb8 | 19392 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
529908cb TT |
19393 | if (attr != nullptr && attr->form_is_unsigned ()) |
19394 | cu->str_offsets_base = attr->as_unsigned (); | |
93311388 | 19395 | |
41144253 | 19396 | attr = die->attr (DW_AT_loclists_base); |
19397 | if (attr != nullptr) | |
529908cb | 19398 | cu->loclist_base = attr->as_unsigned (); |
41144253 | 19399 | |
a39fdb41 | 19400 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
19401 | if (maybe_addr_base.has_value ()) |
19402 | cu->addr_base = *maybe_addr_base; | |
d0ce17d8 CT |
19403 | |
19404 | attr = die->attr (DW_AT_rnglists_base); | |
19405 | if (attr != nullptr) | |
2b0c7f41 | 19406 | cu->rnglists_base = attr->as_unsigned (); |
d0ce17d8 | 19407 | |
7a5f294d TT |
19408 | if (any_need_reprocess) |
19409 | { | |
19410 | for (i = 0; i < abbrev->num_attrs; ++i) | |
19411 | { | |
19412 | if (die->attrs[i].requires_reprocessing_p ()) | |
19413 | read_attribute_reprocess (reader, &die->attrs[i], die->tag); | |
19414 | } | |
19415 | } | |
93311388 | 19416 | *diep = die; |
93311388 DE |
19417 | return info_ptr; |
19418 | } | |
19419 | ||
3019eac3 DE |
19420 | /* Read a die and all its attributes. |
19421 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 19422 | except for its child, sibling, and parent fields. */ |
3019eac3 | 19423 | |
d521ce57 | 19424 | static const gdb_byte * |
3019eac3 | 19425 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 19426 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 19427 | { |
d521ce57 | 19428 | const gdb_byte *result; |
bf6af496 | 19429 | |
3e225074 | 19430 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 19431 | |
b4f54984 | 19432 | if (dwarf_die_debug) |
bf6af496 DE |
19433 | { |
19434 | fprintf_unfiltered (gdb_stdlog, | |
19435 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 19436 | reader->die_section->get_name (), |
bf6af496 DE |
19437 | (unsigned) (info_ptr - reader->die_section->buffer), |
19438 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 19439 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
19440 | } |
19441 | ||
19442 | return result; | |
3019eac3 | 19443 | } |
433df2d4 | 19444 | \f |
c906108c | 19445 | |
72bf9492 DJ |
19446 | /* Returns nonzero if TAG represents a type that we might generate a partial |
19447 | symbol for. */ | |
19448 | ||
19449 | static int | |
d8f62e84 | 19450 | is_type_tag_for_partial (int tag, enum language lang) |
72bf9492 DJ |
19451 | { |
19452 | switch (tag) | |
19453 | { | |
19454 | #if 0 | |
19455 | /* Some types that would be reasonable to generate partial symbols for, | |
d8f62e84 TT |
19456 | that we don't at present. Note that normally this does not |
19457 | matter, mainly because C compilers don't give names to these | |
19458 | types, but instead emit DW_TAG_typedef. */ | |
72bf9492 DJ |
19459 | case DW_TAG_file_type: |
19460 | case DW_TAG_ptr_to_member_type: | |
19461 | case DW_TAG_set_type: | |
19462 | case DW_TAG_string_type: | |
19463 | case DW_TAG_subroutine_type: | |
19464 | #endif | |
d8f62e84 TT |
19465 | |
19466 | /* GNAT may emit an array with a name, but no typedef, so we | |
19467 | need to make a symbol in this case. */ | |
19468 | case DW_TAG_array_type: | |
19469 | return lang == language_ada; | |
19470 | ||
72bf9492 DJ |
19471 | case DW_TAG_base_type: |
19472 | case DW_TAG_class_type: | |
680b30c7 | 19473 | case DW_TAG_interface_type: |
72bf9492 DJ |
19474 | case DW_TAG_enumeration_type: |
19475 | case DW_TAG_structure_type: | |
19476 | case DW_TAG_subrange_type: | |
19477 | case DW_TAG_typedef: | |
19478 | case DW_TAG_union_type: | |
19479 | return 1; | |
19480 | default: | |
19481 | return 0; | |
19482 | } | |
19483 | } | |
19484 | ||
19485 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
19486 | ||
19487 | static struct partial_die_info * | |
dee91e82 | 19488 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 19489 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 19490 | { |
dee91e82 | 19491 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 19492 | struct objfile *objfile = cu->per_objfile->objfile; |
72bf9492 | 19493 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 19494 | unsigned int bytes_read; |
5afb4e99 | 19495 | unsigned int load_all = 0; |
72bf9492 DJ |
19496 | int nesting_level = 1; |
19497 | ||
19498 | parent_die = NULL; | |
19499 | last_die = NULL; | |
19500 | ||
7adf1e79 DE |
19501 | gdb_assert (cu->per_cu != NULL); |
19502 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
19503 | load_all = 1; |
19504 | ||
72bf9492 DJ |
19505 | cu->partial_dies |
19506 | = htab_create_alloc_ex (cu->header.length / 12, | |
19507 | partial_die_hash, | |
19508 | partial_die_eq, | |
19509 | NULL, | |
19510 | &cu->comp_unit_obstack, | |
19511 | hashtab_obstack_allocate, | |
19512 | dummy_obstack_deallocate); | |
19513 | ||
72bf9492 DJ |
19514 | while (1) |
19515 | { | |
7c32eebb TT |
19516 | const abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, |
19517 | &bytes_read); | |
72bf9492 DJ |
19518 | |
19519 | /* A NULL abbrev means the end of a series of children. */ | |
19520 | if (abbrev == NULL) | |
19521 | { | |
19522 | if (--nesting_level == 0) | |
cd9983dd YQ |
19523 | return first_die; |
19524 | ||
72bf9492 DJ |
19525 | info_ptr += bytes_read; |
19526 | last_die = parent_die; | |
19527 | parent_die = parent_die->die_parent; | |
19528 | continue; | |
19529 | } | |
19530 | ||
98bfdba5 PA |
19531 | /* Check for template arguments. We never save these; if |
19532 | they're seen, we just mark the parent, and go on our way. */ | |
19533 | if (parent_die != NULL | |
19534 | && cu->language == language_cplus | |
19535 | && (abbrev->tag == DW_TAG_template_type_param | |
19536 | || abbrev->tag == DW_TAG_template_value_param)) | |
19537 | { | |
19538 | parent_die->has_template_arguments = 1; | |
19539 | ||
19540 | if (!load_all) | |
19541 | { | |
19542 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 19543 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19544 | continue; |
19545 | } | |
19546 | } | |
19547 | ||
0d99eb77 | 19548 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
19549 | Skip their other children. */ |
19550 | if (!load_all | |
19551 | && cu->language == language_cplus | |
19552 | && parent_die != NULL | |
f9b5d5ea TV |
19553 | && parent_die->tag == DW_TAG_subprogram |
19554 | && abbrev->tag != DW_TAG_inlined_subroutine) | |
98bfdba5 | 19555 | { |
dee91e82 | 19556 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
19557 | continue; |
19558 | } | |
19559 | ||
5afb4e99 DJ |
19560 | /* Check whether this DIE is interesting enough to save. Normally |
19561 | we would not be interested in members here, but there may be | |
19562 | later variables referencing them via DW_AT_specification (for | |
19563 | static members). */ | |
19564 | if (!load_all | |
d8f62e84 | 19565 | && !is_type_tag_for_partial (abbrev->tag, cu->language) |
72929c62 | 19566 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
19567 | && abbrev->tag != DW_TAG_enumerator |
19568 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 19569 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 19570 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 19571 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 19572 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 19573 | && abbrev->tag != DW_TAG_module |
95554aad | 19574 | && abbrev->tag != DW_TAG_member |
74921315 KS |
19575 | && abbrev->tag != DW_TAG_imported_unit |
19576 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
19577 | { |
19578 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19579 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
19580 | continue; |
19581 | } | |
19582 | ||
6f06d47b YQ |
19583 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
19584 | abbrev); | |
cd9983dd | 19585 | |
48fbe735 | 19586 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
19587 | |
19588 | /* This two-pass algorithm for processing partial symbols has a | |
19589 | high cost in cache pressure. Thus, handle some simple cases | |
19590 | here which cover the majority of C partial symbols. DIEs | |
19591 | which neither have specification tags in them, nor could have | |
19592 | specification tags elsewhere pointing at them, can simply be | |
19593 | processed and discarded. | |
19594 | ||
19595 | This segment is also optional; scan_partial_symbols and | |
19596 | add_partial_symbol will handle these DIEs if we chain | |
19597 | them in normally. When compilers which do not emit large | |
19598 | quantities of duplicate debug information are more common, | |
19599 | this code can probably be removed. */ | |
19600 | ||
19601 | /* Any complete simple types at the top level (pretty much all | |
19602 | of them, for a language without namespaces), can be processed | |
19603 | directly. */ | |
19604 | if (parent_die == NULL | |
cd9983dd YQ |
19605 | && pdi.has_specification == 0 |
19606 | && pdi.is_declaration == 0 | |
19607 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
19608 | || pdi.tag == DW_TAG_base_type | |
d8f62e84 | 19609 | || pdi.tag == DW_TAG_array_type |
cd9983dd | 19610 | || pdi.tag == DW_TAG_subrange_type)) |
72bf9492 | 19611 | { |
7d00ffec | 19612 | if (building_psymtab && pdi.raw_name != NULL) |
f0fbb768 TT |
19613 | add_partial_symbol (&pdi, cu); |
19614 | ||
cd9983dd | 19615 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19616 | continue; |
19617 | } | |
19618 | ||
d8228535 JK |
19619 | /* The exception for DW_TAG_typedef with has_children above is |
19620 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 19621 | type_name_or_error will error on such types later. |
d8228535 JK |
19622 | |
19623 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
19624 | it could not find the child DIEs referenced later, this is checked | |
19625 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
19626 | ||
cd9983dd | 19627 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 19628 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 19629 | "- DIE at %s [in module %s]"), |
cd9983dd | 19630 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 19631 | |
72bf9492 DJ |
19632 | /* If we're at the second level, and we're an enumerator, and |
19633 | our parent has no specification (meaning possibly lives in a | |
19634 | namespace elsewhere), then we can add the partial symbol now | |
19635 | instead of queueing it. */ | |
cd9983dd | 19636 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
19637 | && parent_die != NULL |
19638 | && parent_die->die_parent == NULL | |
19639 | && parent_die->tag == DW_TAG_enumeration_type | |
19640 | && parent_die->has_specification == 0) | |
19641 | { | |
7d00ffec | 19642 | if (pdi.raw_name == NULL) |
b98664d3 | 19643 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 19644 | else if (building_psymtab) |
f0fbb768 | 19645 | add_partial_symbol (&pdi, cu); |
72bf9492 | 19646 | |
cd9983dd | 19647 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
19648 | continue; |
19649 | } | |
19650 | ||
cd9983dd | 19651 | struct partial_die_info *part_die |
6f06d47b | 19652 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 19653 | |
72bf9492 DJ |
19654 | /* We'll save this DIE so link it in. */ |
19655 | part_die->die_parent = parent_die; | |
19656 | part_die->die_sibling = NULL; | |
19657 | part_die->die_child = NULL; | |
19658 | ||
19659 | if (last_die && last_die == parent_die) | |
19660 | last_die->die_child = part_die; | |
19661 | else if (last_die) | |
19662 | last_die->die_sibling = part_die; | |
19663 | ||
19664 | last_die = part_die; | |
19665 | ||
19666 | if (first_die == NULL) | |
19667 | first_die = part_die; | |
19668 | ||
19669 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
19670 | find interesting need to be in the hash table, because we | |
19671 | also have the parent/sibling/child chains; only those that we | |
19672 | might refer to by offset later during partial symbol reading. | |
19673 | ||
19674 | For now this means things that might have be the target of a | |
19675 | DW_AT_specification, DW_AT_abstract_origin, or | |
19676 | DW_AT_extension. DW_AT_extension will refer only to | |
19677 | namespaces; DW_AT_abstract_origin refers to functions (and | |
19678 | many things under the function DIE, but we do not recurse | |
19679 | into function DIEs during partial symbol reading) and | |
19680 | possibly variables as well; DW_AT_specification refers to | |
19681 | declarations. Declarations ought to have the DW_AT_declaration | |
19682 | flag. It happens that GCC forgets to put it in sometimes, but | |
19683 | only for functions, not for types. | |
19684 | ||
19685 | Adding more things than necessary to the hash table is harmless | |
19686 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
19687 | wasted time in find_partial_die, when we reread the compilation |
19688 | unit with load_all_dies set. */ | |
72bf9492 | 19689 | |
5afb4e99 | 19690 | if (load_all |
72929c62 | 19691 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 19692 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
19693 | || abbrev->tag == DW_TAG_variable |
19694 | || abbrev->tag == DW_TAG_namespace | |
19695 | || part_die->is_declaration) | |
19696 | { | |
19697 | void **slot; | |
19698 | ||
19699 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
19700 | to_underlying (part_die->sect_off), |
19701 | INSERT); | |
72bf9492 DJ |
19702 | *slot = part_die; |
19703 | } | |
19704 | ||
72bf9492 | 19705 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 19706 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
19707 | languages we have to, so that we can get at method physnames |
19708 | to infer fully qualified class names, for DW_AT_specification, | |
19709 | and for C++ template arguments. For C++, we also look one level | |
19710 | inside functions to find template arguments (if the name of the | |
19711 | function does not already contain the template arguments). | |
bc30ff58 | 19712 | |
0a4b0913 AB |
19713 | For Ada and Fortran, we need to scan the children of subprograms |
19714 | and lexical blocks as well because these languages allow the | |
19715 | definition of nested entities that could be interesting for the | |
19716 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 19717 | if (last_die->has_children |
5afb4e99 DJ |
19718 | && (load_all |
19719 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 19720 | || last_die->tag == DW_TAG_module |
72bf9492 | 19721 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
19722 | || (cu->language == language_cplus |
19723 | && last_die->tag == DW_TAG_subprogram | |
7d00ffec TT |
19724 | && (last_die->raw_name == NULL |
19725 | || strchr (last_die->raw_name, '<') == NULL)) | |
72bf9492 DJ |
19726 | || (cu->language != language_c |
19727 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 19728 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 19729 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 19730 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
19731 | || ((cu->language == language_ada |
19732 | || cu->language == language_fortran) | |
bc30ff58 JB |
19733 | && (last_die->tag == DW_TAG_subprogram |
19734 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
19735 | { |
19736 | nesting_level++; | |
19737 | parent_die = last_die; | |
19738 | continue; | |
19739 | } | |
19740 | ||
19741 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 19742 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
19743 | |
19744 | /* Back to the top, do it again. */ | |
19745 | } | |
19746 | } | |
19747 | ||
6f06d47b | 19748 | partial_die_info::partial_die_info (sect_offset sect_off_, |
7c32eebb | 19749 | const struct abbrev_info *abbrev) |
6f06d47b YQ |
19750 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) |
19751 | { | |
19752 | } | |
19753 | ||
7d00ffec TT |
19754 | /* See class definition. */ |
19755 | ||
19756 | const char * | |
19757 | partial_die_info::name (dwarf2_cu *cu) | |
19758 | { | |
19759 | if (!canonical_name && raw_name != nullptr) | |
19760 | { | |
19761 | struct objfile *objfile = cu->per_objfile->objfile; | |
19762 | raw_name = dwarf2_canonicalize_name (raw_name, cu, objfile); | |
19763 | canonical_name = 1; | |
19764 | } | |
19765 | ||
19766 | return raw_name; | |
19767 | } | |
19768 | ||
35cc7ed7 YQ |
19769 | /* Read a minimal amount of information into the minimal die structure. |
19770 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 19771 | |
48fbe735 YQ |
19772 | const gdb_byte * |
19773 | partial_die_info::read (const struct die_reader_specs *reader, | |
19774 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 19775 | { |
dee91e82 | 19776 | struct dwarf2_cu *cu = reader->cu; |
976ca316 | 19777 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
fa238c03 | 19778 | unsigned int i; |
c5aa993b | 19779 | int has_low_pc_attr = 0; |
c906108c | 19780 | int has_high_pc_attr = 0; |
91da1414 | 19781 | int high_pc_relative = 0; |
c906108c | 19782 | |
fd0a254f | 19783 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 19784 | { |
e7da7f8f | 19785 | attribute attr; |
7a5f294d | 19786 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
18a8505e | 19787 | /* String and address offsets that need to do the reprocessing have |
dda83cd7 | 19788 | already been read at this point, so there is no need to wait until |
18a8505e | 19789 | the loop terminates to do the reprocessing. */ |
7a5f294d | 19790 | if (attr.requires_reprocessing_p ()) |
d0ce17d8 | 19791 | read_attribute_reprocess (reader, &attr, tag); |
c906108c | 19792 | /* Store the data if it is of an attribute we want to keep in a |
dda83cd7 | 19793 | partial symbol table. */ |
c906108c SS |
19794 | switch (attr.name) |
19795 | { | |
19796 | case DW_AT_name: | |
48fbe735 | 19797 | switch (tag) |
71c25dea TT |
19798 | { |
19799 | case DW_TAG_compile_unit: | |
95554aad | 19800 | case DW_TAG_partial_unit: |
348e048f | 19801 | case DW_TAG_type_unit: |
71c25dea TT |
19802 | /* Compilation units have a DW_AT_name that is a filename, not |
19803 | a source language identifier. */ | |
19804 | case DW_TAG_enumeration_type: | |
19805 | case DW_TAG_enumerator: | |
19806 | /* These tags always have simple identifiers already; no need | |
19807 | to canonicalize them. */ | |
7d00ffec | 19808 | canonical_name = 1; |
2c830f54 | 19809 | raw_name = attr.as_string (); |
71c25dea TT |
19810 | break; |
19811 | default: | |
7d00ffec | 19812 | canonical_name = 0; |
2c830f54 | 19813 | raw_name = attr.as_string (); |
71c25dea TT |
19814 | break; |
19815 | } | |
c906108c | 19816 | break; |
31ef98ae | 19817 | case DW_AT_linkage_name: |
c906108c | 19818 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
19819 | /* Note that both forms of linkage name might appear. We |
19820 | assume they will be the same, and we only store the last | |
19821 | one we see. */ | |
95f982e5 | 19822 | linkage_name = attr.as_string (); |
c906108c SS |
19823 | break; |
19824 | case DW_AT_low_pc: | |
19825 | has_low_pc_attr = 1; | |
95f982e5 | 19826 | lowpc = attr.as_address (); |
c906108c SS |
19827 | break; |
19828 | case DW_AT_high_pc: | |
19829 | has_high_pc_attr = 1; | |
95f982e5 | 19830 | highpc = attr.as_address (); |
cd6c91b4 | 19831 | if (cu->header.version >= 4 && attr.form_is_constant ()) |
31aa7e4e | 19832 | high_pc_relative = 1; |
c906108c SS |
19833 | break; |
19834 | case DW_AT_location: | |
dda83cd7 SM |
19835 | /* Support the .debug_loc offsets. */ |
19836 | if (attr.form_is_block ()) | |
19837 | { | |
9d2246fc | 19838 | d.locdesc = attr.as_block (); |
dda83cd7 SM |
19839 | } |
19840 | else if (attr.form_is_section_offset ()) | |
19841 | { | |
4d3c2250 | 19842 | dwarf2_complex_location_expr_complaint (); |
dda83cd7 SM |
19843 | } |
19844 | else | |
19845 | { | |
4d3c2250 KB |
19846 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
19847 | "partial symbol information"); | |
dda83cd7 | 19848 | } |
c906108c | 19849 | break; |
c906108c | 19850 | case DW_AT_external: |
c45bc3f8 | 19851 | is_external = attr.as_boolean (); |
c906108c SS |
19852 | break; |
19853 | case DW_AT_declaration: | |
c45bc3f8 | 19854 | is_declaration = attr.as_boolean (); |
c906108c SS |
19855 | break; |
19856 | case DW_AT_type: | |
48fbe735 | 19857 | has_type = 1; |
c906108c SS |
19858 | break; |
19859 | case DW_AT_abstract_origin: | |
19860 | case DW_AT_specification: | |
72bf9492 | 19861 | case DW_AT_extension: |
48fbe735 | 19862 | has_specification = 1; |
0826b30a | 19863 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 19864 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 19865 | || cu->per_cu->is_dwz); |
c906108c SS |
19866 | break; |
19867 | case DW_AT_sibling: | |
19868 | /* Ignore absolute siblings, they might point outside of | |
19869 | the current compile unit. */ | |
19870 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 19871 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 19872 | else |
b9502d3f | 19873 | { |
48fbe735 | 19874 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 19875 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 19876 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
19877 | |
19878 | if (sibling_ptr < info_ptr) | |
b98664d3 | 19879 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 19880 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 19881 | reader->die_section->overflow_complaint (); |
b9502d3f | 19882 | else |
48fbe735 | 19883 | sibling = sibling_ptr; |
b9502d3f | 19884 | } |
c906108c | 19885 | break; |
dda83cd7 SM |
19886 | case DW_AT_byte_size: |
19887 | has_byte_size = 1; | |
19888 | break; | |
19889 | case DW_AT_const_value: | |
19890 | has_const_value = 1; | |
19891 | break; | |
68511cec CES |
19892 | case DW_AT_calling_convention: |
19893 | /* DWARF doesn't provide a way to identify a program's source-level | |
19894 | entry point. DW_AT_calling_convention attributes are only meant | |
19895 | to describe functions' calling conventions. | |
19896 | ||
19897 | However, because it's a necessary piece of information in | |
0c1b455e TT |
19898 | Fortran, and before DWARF 4 DW_CC_program was the only |
19899 | piece of debugging information whose definition refers to | |
19900 | a 'main program' at all, several compilers marked Fortran | |
19901 | main programs with DW_CC_program --- even when those | |
19902 | functions use the standard calling conventions. | |
19903 | ||
19904 | Although DWARF now specifies a way to provide this | |
19905 | information, we support this practice for backward | |
19906 | compatibility. */ | |
529908cb | 19907 | if (attr.constant_value (0) == DW_CC_program |
0c1b455e | 19908 | && cu->language == language_fortran) |
48fbe735 | 19909 | main_subprogram = 1; |
68511cec | 19910 | break; |
481860b3 | 19911 | case DW_AT_inline: |
529908cb TT |
19912 | { |
19913 | LONGEST value = attr.constant_value (-1); | |
19914 | if (value == DW_INL_inlined | |
19915 | || value == DW_INL_declared_inlined) | |
19916 | may_be_inlined = 1; | |
19917 | } | |
481860b3 | 19918 | break; |
95554aad TT |
19919 | |
19920 | case DW_AT_import: | |
48fbe735 | 19921 | if (tag == DW_TAG_imported_unit) |
36586728 | 19922 | { |
0826b30a | 19923 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 19924 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
19925 | || cu->per_cu->is_dwz); |
19926 | } | |
95554aad TT |
19927 | break; |
19928 | ||
0c1b455e | 19929 | case DW_AT_main_subprogram: |
c45bc3f8 | 19930 | main_subprogram = attr.as_boolean (); |
0c1b455e TT |
19931 | break; |
19932 | ||
05caa1d2 TT |
19933 | case DW_AT_ranges: |
19934 | { | |
2b0c7f41 SM |
19935 | /* Offset in the .debug_ranges or .debug_rnglist section (depending |
19936 | on DWARF version). */ | |
19937 | ULONGEST ranges_offset = attr.as_unsigned (); | |
19938 | ||
19939 | /* See dwarf2_cu::gnu_ranges_base's doc for why we might want to add | |
19940 | this value. */ | |
19941 | if (tag != DW_TAG_compile_unit) | |
19942 | ranges_offset += cu->gnu_ranges_base; | |
19943 | ||
05caa1d2 | 19944 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, |
d0ce17d8 | 19945 | nullptr, tag)) |
05caa1d2 TT |
19946 | has_pc_info = 1; |
19947 | } | |
19948 | break; | |
19949 | ||
c906108c SS |
19950 | default: |
19951 | break; | |
19952 | } | |
19953 | } | |
19954 | ||
10d06d82 TT |
19955 | /* For Ada, if both the name and the linkage name appear, we prefer |
19956 | the latter. This lets "catch exception" work better, regardless | |
19957 | of the order in which the name and linkage name were emitted. | |
19958 | Really, though, this is just a workaround for the fact that gdb | |
19959 | doesn't store both the name and the linkage name. */ | |
19960 | if (cu->language == language_ada && linkage_name != nullptr) | |
7d00ffec | 19961 | raw_name = linkage_name; |
10d06d82 | 19962 | |
91da1414 | 19963 | if (high_pc_relative) |
48fbe735 | 19964 | highpc += lowpc; |
91da1414 | 19965 | |
9373cf26 JK |
19966 | if (has_low_pc_attr && has_high_pc_attr) |
19967 | { | |
19968 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
19969 | eliminate duplicate copies of functions and vtables and such. | |
19970 | The linker will arbitrarily choose one and discard the others. | |
19971 | The AT_*_pc values for such functions refer to local labels in | |
19972 | these sections. If the section from that file was discarded, the | |
19973 | labels are not in the output, so the relocs get a value of 0. | |
19974 | If this is a discarded function, mark the pc bounds as invalid, | |
19975 | so that GDB will ignore it. */ | |
976ca316 | 19976 | if (lowpc == 0 && !per_objfile->per_bfd->has_section_at_zero) |
9373cf26 | 19977 | { |
976ca316 | 19978 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19979 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19980 | |
b98664d3 | 19981 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 19982 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19983 | paddress (gdbarch, lowpc), |
19984 | sect_offset_str (sect_off), | |
9d8780f0 | 19985 | objfile_name (objfile)); |
9373cf26 JK |
19986 | } |
19987 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 19988 | else if (lowpc >= highpc) |
9373cf26 | 19989 | { |
976ca316 | 19990 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 19991 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 19992 | |
b98664d3 | 19993 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 19994 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
19995 | paddress (gdbarch, lowpc), |
19996 | paddress (gdbarch, highpc), | |
19997 | sect_offset_str (sect_off), | |
9c541725 | 19998 | objfile_name (objfile)); |
9373cf26 JK |
19999 | } |
20000 | else | |
48fbe735 | 20001 | has_pc_info = 1; |
9373cf26 | 20002 | } |
85cbf3d3 | 20003 | |
c906108c SS |
20004 | return info_ptr; |
20005 | } | |
20006 | ||
72bf9492 DJ |
20007 | /* Find a cached partial DIE at OFFSET in CU. */ |
20008 | ||
d590ff25 YQ |
20009 | struct partial_die_info * |
20010 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
20011 | { |
20012 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 20013 | struct partial_die_info part_die (sect_off); |
72bf9492 | 20014 | |
9a3c8263 | 20015 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 20016 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 20017 | to_underlying (sect_off))); |
72bf9492 | 20018 | |
72bf9492 DJ |
20019 | return lookup_die; |
20020 | } | |
20021 | ||
348e048f DE |
20022 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
20023 | except in the case of .debug_types DIEs which do not reference | |
20024 | outside their CU (they do however referencing other types via | |
55f1336d | 20025 | DW_FORM_ref_sig8). */ |
72bf9492 | 20026 | |
122cf0f2 | 20027 | static const struct cu_partial_die_info |
9c541725 | 20028 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 20029 | { |
976ca316 SM |
20030 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20031 | struct objfile *objfile = per_objfile->objfile; | |
5afb4e99 | 20032 | struct partial_die_info *pd = NULL; |
72bf9492 | 20033 | |
36586728 | 20034 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 20035 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 20036 | { |
d590ff25 | 20037 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 20038 | if (pd != NULL) |
fb816e8b | 20039 | return { cu, pd }; |
0d99eb77 DE |
20040 | /* We missed recording what we needed. |
20041 | Load all dies and try again. */ | |
5afb4e99 | 20042 | } |
0d99eb77 DE |
20043 | else |
20044 | { | |
20045 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 20046 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 20047 | { |
9d8780f0 SM |
20048 | error (_("Dwarf Error: Type Unit at offset %s contains" |
20049 | " external reference to offset %s [in module %s].\n"), | |
20050 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
20051 | bfd_get_filename (objfile->obfd)); |
20052 | } | |
7188ed02 SM |
20053 | dwarf2_per_cu_data *per_cu |
20054 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
976ca316 | 20055 | per_objfile); |
72bf9492 | 20056 | |
976ca316 | 20057 | cu = per_objfile->get_cu (per_cu); |
7188ed02 | 20058 | if (cu == NULL || cu->partial_dies == NULL) |
976ca316 | 20059 | load_partial_comp_unit (per_cu, per_objfile, nullptr); |
ae038cb0 | 20060 | |
976ca316 | 20061 | cu = per_objfile->get_cu (per_cu); |
7188ed02 SM |
20062 | |
20063 | cu->last_used = 0; | |
20064 | pd = cu->find_partial_die (sect_off); | |
0d99eb77 | 20065 | } |
5afb4e99 | 20066 | |
dee91e82 DE |
20067 | /* If we didn't find it, and not all dies have been loaded, |
20068 | load them all and try again. */ | |
20069 | ||
7188ed02 | 20070 | if (pd == NULL && cu->per_cu->load_all_dies == 0) |
5afb4e99 | 20071 | { |
7188ed02 | 20072 | cu->per_cu->load_all_dies = 1; |
fd820528 DE |
20073 | |
20074 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
20075 | THIS_CU->cu may already be in use. So we can't just free it and | |
20076 | replace its DIEs with the ones we read in. Instead, we leave those | |
20077 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
20078 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
20079 | set. */ | |
976ca316 | 20080 | load_partial_comp_unit (cu->per_cu, per_objfile, cu); |
5afb4e99 | 20081 | |
7188ed02 | 20082 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
20083 | } |
20084 | ||
20085 | if (pd == NULL) | |
521894aa | 20086 | error (_("Dwarf Error: Cannot not find DIE at %s [from module %s]\n"), |
9d8780f0 | 20087 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
7188ed02 | 20088 | return { cu, pd }; |
72bf9492 DJ |
20089 | } |
20090 | ||
abc72ce4 DE |
20091 | /* See if we can figure out if the class lives in a namespace. We do |
20092 | this by looking for a member function; its demangled name will | |
20093 | contain namespace info, if there is any. */ | |
20094 | ||
20095 | static void | |
20096 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
20097 | struct dwarf2_cu *cu) | |
20098 | { | |
20099 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
20100 | what template types look like, because the demangler | |
20101 | frequently doesn't give the same name as the debug info. We | |
20102 | could fix this by only using the demangled name to get the | |
20103 | prefix (but see comment in read_structure_type). */ | |
20104 | ||
20105 | struct partial_die_info *real_pdi; | |
20106 | struct partial_die_info *child_pdi; | |
20107 | ||
20108 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
20109 | we should not do this. We'll prepend the parent's fully qualified | |
20110 | name when we create the partial symbol. */ | |
20111 | ||
20112 | real_pdi = struct_pdi; | |
20113 | while (real_pdi->has_specification) | |
fb816e8b | 20114 | { |
122cf0f2 AB |
20115 | auto res = find_partial_die (real_pdi->spec_offset, |
20116 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
20117 | real_pdi = res.pdi; |
20118 | cu = res.cu; | |
20119 | } | |
abc72ce4 DE |
20120 | |
20121 | if (real_pdi->die_parent != NULL) | |
20122 | return; | |
20123 | ||
20124 | for (child_pdi = struct_pdi->die_child; | |
20125 | child_pdi != NULL; | |
20126 | child_pdi = child_pdi->die_sibling) | |
20127 | { | |
20128 | if (child_pdi->tag == DW_TAG_subprogram | |
20129 | && child_pdi->linkage_name != NULL) | |
20130 | { | |
43816ebc | 20131 | gdb::unique_xmalloc_ptr<char> actual_class_name |
eff93b4d AB |
20132 | (cu->language_defn->class_name_from_physname |
20133 | (child_pdi->linkage_name)); | |
abc72ce4 DE |
20134 | if (actual_class_name != NULL) |
20135 | { | |
5e22e966 | 20136 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
20137 | struct_pdi->raw_name = objfile->intern (actual_class_name.get ()); |
20138 | struct_pdi->canonical_name = 1; | |
abc72ce4 DE |
20139 | } |
20140 | break; | |
20141 | } | |
20142 | } | |
20143 | } | |
20144 | ||
25c11aca TV |
20145 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
20146 | attribute. */ | |
20147 | ||
20148 | static bool | |
20149 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
20150 | { | |
20151 | switch (tag) | |
20152 | { | |
20153 | case DW_TAG_constant: | |
20154 | case DW_TAG_enumerator: | |
20155 | case DW_TAG_formal_parameter: | |
20156 | case DW_TAG_template_value_param: | |
20157 | case DW_TAG_variable: | |
20158 | return true; | |
20159 | } | |
20160 | ||
20161 | return false; | |
20162 | } | |
20163 | ||
52356b79 YQ |
20164 | void |
20165 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 20166 | { |
abc72ce4 DE |
20167 | /* Once we've fixed up a die, there's no point in doing so again. |
20168 | This also avoids a memory leak if we were to call | |
20169 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 20170 | if (fixup_called) |
abc72ce4 DE |
20171 | return; |
20172 | ||
72bf9492 DJ |
20173 | /* If we found a reference attribute and the DIE has no name, try |
20174 | to find a name in the referred to DIE. */ | |
20175 | ||
7d00ffec | 20176 | if (raw_name == NULL && has_specification) |
72bf9492 DJ |
20177 | { |
20178 | struct partial_die_info *spec_die; | |
72bf9492 | 20179 | |
122cf0f2 | 20180 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
20181 | spec_die = res.pdi; |
20182 | cu = res.cu; | |
72bf9492 | 20183 | |
52356b79 | 20184 | spec_die->fixup (cu); |
72bf9492 | 20185 | |
7d00ffec | 20186 | if (spec_die->raw_name) |
72bf9492 | 20187 | { |
7d00ffec TT |
20188 | raw_name = spec_die->raw_name; |
20189 | canonical_name = spec_die->canonical_name; | |
72bf9492 DJ |
20190 | |
20191 | /* Copy DW_AT_external attribute if it is set. */ | |
20192 | if (spec_die->is_external) | |
52356b79 | 20193 | is_external = spec_die->is_external; |
72bf9492 DJ |
20194 | } |
20195 | } | |
20196 | ||
25c11aca TV |
20197 | if (!has_const_value && has_specification |
20198 | && can_have_DW_AT_const_value_p (tag)) | |
20199 | { | |
20200 | struct partial_die_info *spec_die; | |
20201 | ||
20202 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
20203 | spec_die = res.pdi; | |
20204 | cu = res.cu; | |
20205 | ||
20206 | spec_die->fixup (cu); | |
20207 | ||
20208 | if (spec_die->has_const_value) | |
20209 | { | |
20210 | /* Copy DW_AT_const_value attribute if it is set. */ | |
20211 | has_const_value = spec_die->has_const_value; | |
20212 | } | |
20213 | } | |
20214 | ||
72bf9492 | 20215 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 20216 | |
7d00ffec TT |
20217 | if (raw_name == NULL && tag == DW_TAG_namespace) |
20218 | { | |
20219 | raw_name = CP_ANONYMOUS_NAMESPACE_STR; | |
20220 | canonical_name = 1; | |
20221 | } | |
72bf9492 | 20222 | |
abc72ce4 DE |
20223 | /* If there is no parent die to provide a namespace, and there are |
20224 | children, see if we can determine the namespace from their linkage | |
122d1940 | 20225 | name. */ |
abc72ce4 | 20226 | if (cu->language == language_cplus |
5e22e966 | 20227 | && !cu->per_objfile->per_bfd->types.empty () |
52356b79 YQ |
20228 | && die_parent == NULL |
20229 | && has_children | |
20230 | && (tag == DW_TAG_class_type | |
20231 | || tag == DW_TAG_structure_type | |
20232 | || tag == DW_TAG_union_type)) | |
20233 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 20234 | |
53832f31 TT |
20235 | /* GCC might emit a nameless struct or union that has a linkage |
20236 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
7d00ffec | 20237 | if (raw_name == NULL |
52356b79 YQ |
20238 | && (tag == DW_TAG_class_type |
20239 | || tag == DW_TAG_interface_type | |
20240 | || tag == DW_TAG_structure_type | |
20241 | || tag == DW_TAG_union_type) | |
20242 | && linkage_name != NULL) | |
53832f31 | 20243 | { |
43816ebc TT |
20244 | gdb::unique_xmalloc_ptr<char> demangled |
20245 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
20246 | if (demangled != nullptr) | |
53832f31 | 20247 | { |
96408a79 SA |
20248 | const char *base; |
20249 | ||
20250 | /* Strip any leading namespaces/classes, keep only the base name. | |
20251 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
20252 | base = strrchr (demangled.get (), ':'); |
20253 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
20254 | base++; |
20255 | else | |
43816ebc | 20256 | base = demangled.get (); |
96408a79 | 20257 | |
5e22e966 | 20258 | struct objfile *objfile = cu->per_objfile->objfile; |
7d00ffec TT |
20259 | raw_name = objfile->intern (base); |
20260 | canonical_name = 1; | |
53832f31 TT |
20261 | } |
20262 | } | |
20263 | ||
52356b79 | 20264 | fixup_called = 1; |
72bf9492 DJ |
20265 | } |
20266 | ||
d0ce17d8 | 20267 | /* Read the .debug_loclists or .debug_rnglists header (they are the same format) |
a1c40103 SM |
20268 | contents from the given SECTION in the HEADER. |
20269 | ||
20270 | HEADER_OFFSET is the offset of the header in the section. */ | |
41144253 | 20271 | static void |
d0ce17d8 | 20272 | read_loclists_rnglists_header (struct loclists_rnglists_header *header, |
a1c40103 SM |
20273 | struct dwarf2_section_info *section, |
20274 | sect_offset header_offset) | |
41144253 | 20275 | { |
20276 | unsigned int bytes_read; | |
20277 | bfd *abfd = section->get_bfd_owner (); | |
a1c40103 SM |
20278 | const gdb_byte *info_ptr = section->buffer + to_underlying (header_offset); |
20279 | ||
41144253 | 20280 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); |
20281 | info_ptr += bytes_read; | |
a1c40103 | 20282 | |
41144253 | 20283 | header->version = read_2_bytes (abfd, info_ptr); |
20284 | info_ptr += 2; | |
a1c40103 | 20285 | |
41144253 | 20286 | header->addr_size = read_1_byte (abfd, info_ptr); |
20287 | info_ptr += 1; | |
a1c40103 | 20288 | |
41144253 | 20289 | header->segment_collector_size = read_1_byte (abfd, info_ptr); |
20290 | info_ptr += 1; | |
a1c40103 | 20291 | |
41144253 | 20292 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); |
20293 | } | |
20294 | ||
20295 | /* Return the DW_AT_loclists_base value for the CU. */ | |
20296 | static ULONGEST | |
20297 | lookup_loclist_base (struct dwarf2_cu *cu) | |
20298 | { | |
20299 | /* For the .dwo unit, the loclist_base points to the first offset following | |
20300 | the header. The header consists of the following entities- | |
20301 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
20302 | bit format) | |
20303 | 2. version (2 bytes) | |
20304 | 3. address size (1 byte) | |
20305 | 4. segment selector size (1 byte) | |
20306 | 5. offset entry count (4 bytes) | |
20307 | These sizes are derived as per the DWARFv5 standard. */ | |
20308 | if (cu->dwo_unit != nullptr) | |
20309 | { | |
20310 | if (cu->header.initial_length_size == 4) | |
20311 | return LOCLIST_HEADER_SIZE32; | |
20312 | return LOCLIST_HEADER_SIZE64; | |
20313 | } | |
20314 | return cu->loclist_base; | |
20315 | } | |
20316 | ||
20317 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
20318 | array of offsets in the .debug_loclists section. */ | |
e57933dc SM |
20319 | |
20320 | static sect_offset | |
41144253 | 20321 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) |
20322 | { | |
976ca316 SM |
20323 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20324 | struct objfile *objfile = per_objfile->objfile; | |
41144253 | 20325 | bfd *abfd = objfile->obfd; |
a1c40103 SM |
20326 | ULONGEST loclist_header_size = |
20327 | (cu->header.initial_length_size == 4 ? LOCLIST_HEADER_SIZE32 | |
20328 | : LOCLIST_HEADER_SIZE64); | |
41144253 | 20329 | ULONGEST loclist_base = lookup_loclist_base (cu); |
05787bad SM |
20330 | |
20331 | /* Offset in .debug_loclists of the offset for LOCLIST_INDEX. */ | |
20332 | ULONGEST start_offset = | |
20333 | loclist_base + loclist_index * cu->header.offset_size; | |
20334 | ||
a1c40103 | 20335 | /* Get loclists section. */ |
41144253 | 20336 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
20337 | ||
a1c40103 | 20338 | /* Read the loclists section content. */ |
41144253 | 20339 | section->read (objfile); |
20340 | if (section->buffer == NULL) | |
a0c1eeba SM |
20341 | error (_("DW_FORM_loclistx used without .debug_loclists " |
20342 | "section [in module %s]"), objfile_name (objfile)); | |
20343 | ||
a1c40103 SM |
20344 | /* DW_AT_loclists_base points after the .debug_loclists contribution header, |
20345 | so if loclist_base is smaller than the header size, we have a problem. */ | |
20346 | if (loclist_base < loclist_header_size) | |
20347 | error (_("DW_AT_loclists_base is smaller than header size [in module %s]"), | |
20348 | objfile_name (objfile)); | |
20349 | ||
20350 | /* Read the header of the loclists contribution. */ | |
d0ce17d8 | 20351 | struct loclists_rnglists_header header; |
a1c40103 SM |
20352 | read_loclists_rnglists_header (&header, section, |
20353 | (sect_offset) (loclist_base - loclist_header_size)); | |
20354 | ||
20355 | /* Verify the loclist index is valid. */ | |
41144253 | 20356 | if (loclist_index >= header.offset_entry_count) |
a0c1eeba SM |
20357 | error (_("DW_FORM_loclistx pointing outside of " |
20358 | ".debug_loclists offset array [in module %s]"), | |
20359 | objfile_name (objfile)); | |
20360 | ||
05787bad SM |
20361 | /* Validate that reading won't go beyond the end of the section. */ |
20362 | if (start_offset + cu->header.offset_size > section->size) | |
20363 | error (_("Reading DW_FORM_loclistx index beyond end of" | |
20364 | ".debug_loclists section [in module %s]"), | |
20365 | objfile_name (objfile)); | |
20366 | ||
20367 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
41144253 | 20368 | |
20369 | if (cu->header.offset_size == 4) | |
e57933dc | 20370 | return (sect_offset) (bfd_get_32 (abfd, info_ptr) + loclist_base); |
41144253 | 20371 | else |
e57933dc | 20372 | return (sect_offset) (bfd_get_64 (abfd, info_ptr) + loclist_base); |
41144253 | 20373 | } |
20374 | ||
d0ce17d8 CT |
20375 | /* Given a DW_FORM_rnglistx value RNGLIST_INDEX, fetch the offset from the |
20376 | array of offsets in the .debug_rnglists section. */ | |
e57933dc SM |
20377 | |
20378 | static sect_offset | |
d0ce17d8 CT |
20379 | read_rnglist_index (struct dwarf2_cu *cu, ULONGEST rnglist_index, |
20380 | dwarf_tag tag) | |
20381 | { | |
20382 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
20383 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
20384 | bfd *abfd = objfile->obfd; | |
20385 | ULONGEST rnglist_header_size = | |
20386 | (cu->header.initial_length_size == 4 ? RNGLIST_HEADER_SIZE32 | |
20387 | : RNGLIST_HEADER_SIZE64); | |
2b0c7f41 SM |
20388 | |
20389 | /* When reading a DW_FORM_rnglistx from a DWO, we read from the DWO's | |
20390 | .debug_rnglists.dwo section. The rnglists base given in the skeleton | |
20391 | doesn't apply. */ | |
d0ce17d8 | 20392 | ULONGEST rnglist_base = |
2b0c7f41 | 20393 | (cu->dwo_unit != nullptr) ? rnglist_header_size : cu->rnglists_base; |
5e4d9bbc SM |
20394 | |
20395 | /* Offset in .debug_rnglists of the offset for RNGLIST_INDEX. */ | |
d0ce17d8 CT |
20396 | ULONGEST start_offset = |
20397 | rnglist_base + rnglist_index * cu->header.offset_size; | |
20398 | ||
20399 | /* Get rnglists section. */ | |
20400 | struct dwarf2_section_info *section = cu_debug_rnglists_section (cu, tag); | |
20401 | ||
20402 | /* Read the rnglists section content. */ | |
20403 | section->read (objfile); | |
20404 | if (section->buffer == nullptr) | |
20405 | error (_("DW_FORM_rnglistx used without .debug_rnglists section " | |
20406 | "[in module %s]"), | |
20407 | objfile_name (objfile)); | |
20408 | ||
a1c40103 SM |
20409 | /* DW_AT_rnglists_base points after the .debug_rnglists contribution header, |
20410 | so if rnglist_base is smaller than the header size, we have a problem. */ | |
20411 | if (rnglist_base < rnglist_header_size) | |
20412 | error (_("DW_AT_rnglists_base is smaller than header size [in module %s]"), | |
20413 | objfile_name (objfile)); | |
20414 | ||
20415 | /* Read the header of the rnglists contribution. */ | |
d0ce17d8 | 20416 | struct loclists_rnglists_header header; |
a1c40103 SM |
20417 | read_loclists_rnglists_header (&header, section, |
20418 | (sect_offset) (rnglist_base - rnglist_header_size)); | |
20419 | ||
20420 | /* Verify the rnglist index is valid. */ | |
d0ce17d8 CT |
20421 | if (rnglist_index >= header.offset_entry_count) |
20422 | error (_("DW_FORM_rnglistx index pointing outside of " | |
20423 | ".debug_rnglists offset array [in module %s]"), | |
20424 | objfile_name (objfile)); | |
20425 | ||
d0ce17d8 | 20426 | /* Validate that reading won't go beyond the end of the section. */ |
5e4d9bbc | 20427 | if (start_offset + cu->header.offset_size > section->size) |
d0ce17d8 CT |
20428 | error (_("Reading DW_FORM_rnglistx index beyond end of" |
20429 | ".debug_rnglists section [in module %s]"), | |
20430 | objfile_name (objfile)); | |
20431 | ||
20432 | const gdb_byte *info_ptr = section->buffer + start_offset; | |
20433 | ||
20434 | if (cu->header.offset_size == 4) | |
e57933dc | 20435 | return (sect_offset) (read_4_bytes (abfd, info_ptr) + rnglist_base); |
d0ce17d8 | 20436 | else |
e57933dc | 20437 | return (sect_offset) (read_8_bytes (abfd, info_ptr) + rnglist_base); |
d0ce17d8 CT |
20438 | } |
20439 | ||
18a8505e AT |
20440 | /* Process the attributes that had to be skipped in the first round. These |
20441 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
20442 | They could not have been processed in the first round, because at the time | |
20443 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
20444 | static void |
20445 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
d0ce17d8 | 20446 | struct attribute *attr, dwarf_tag tag) |
18a8505e AT |
20447 | { |
20448 | struct dwarf2_cu *cu = reader->cu; | |
20449 | switch (attr->form) | |
20450 | { | |
20451 | case DW_FORM_addrx: | |
20452 | case DW_FORM_GNU_addr_index: | |
36d378cf TT |
20453 | attr->set_address (read_addr_index (cu, |
20454 | attr->as_unsigned_reprocess ())); | |
dda83cd7 | 20455 | break; |
41144253 | 20456 | case DW_FORM_loclistx: |
b1829e1b | 20457 | { |
e57933dc | 20458 | sect_offset loclists_sect_off |
b1829e1b SM |
20459 | = read_loclist_index (cu, attr->as_unsigned_reprocess ()); |
20460 | ||
e57933dc | 20461 | attr->set_unsigned (to_underlying (loclists_sect_off)); |
b1829e1b SM |
20462 | } |
20463 | break; | |
d0ce17d8 | 20464 | case DW_FORM_rnglistx: |
b1829e1b | 20465 | { |
e57933dc | 20466 | sect_offset rnglists_sect_off |
b1829e1b SM |
20467 | = read_rnglist_index (cu, attr->as_unsigned_reprocess (), tag); |
20468 | ||
e57933dc | 20469 | attr->set_unsigned (to_underlying (rnglists_sect_off)); |
b1829e1b | 20470 | } |
dda83cd7 | 20471 | break; |
18a8505e AT |
20472 | case DW_FORM_strx: |
20473 | case DW_FORM_strx1: | |
20474 | case DW_FORM_strx2: | |
20475 | case DW_FORM_strx3: | |
20476 | case DW_FORM_strx4: | |
20477 | case DW_FORM_GNU_str_index: | |
20478 | { | |
fe56917a | 20479 | unsigned int str_index = attr->as_unsigned_reprocess (); |
c6481205 | 20480 | gdb_assert (!attr->canonical_string_p ()); |
18a8505e | 20481 | if (reader->dwo_file != NULL) |
c6481205 TT |
20482 | attr->set_string_noncanonical (read_dwo_str_index (reader, |
20483 | str_index)); | |
18a8505e | 20484 | else |
c6481205 TT |
20485 | attr->set_string_noncanonical (read_stub_str_index (cu, |
20486 | str_index)); | |
18a8505e AT |
20487 | break; |
20488 | } | |
20489 | default: | |
20490 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
20491 | } | |
20492 | } | |
20493 | ||
a8329558 | 20494 | /* Read an attribute value described by an attribute form. */ |
c906108c | 20495 | |
d521ce57 | 20496 | static const gdb_byte * |
dee91e82 DE |
20497 | read_attribute_value (const struct die_reader_specs *reader, |
20498 | struct attribute *attr, unsigned form, | |
7a5f294d | 20499 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 20500 | { |
dee91e82 | 20501 | struct dwarf2_cu *cu = reader->cu; |
976ca316 SM |
20502 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20503 | struct objfile *objfile = per_objfile->objfile; | |
dee91e82 | 20504 | bfd *abfd = reader->abfd; |
e7c27a73 | 20505 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
20506 | unsigned int bytes_read; |
20507 | struct dwarf_block *blk; | |
20508 | ||
aead7601 | 20509 | attr->form = (enum dwarf_form) form; |
a8329558 | 20510 | switch (form) |
c906108c | 20511 | { |
c906108c | 20512 | case DW_FORM_ref_addr: |
7c290a04 TT |
20513 | if (cu_header->version == 2) |
20514 | attr->set_unsigned (cu_header->read_address (abfd, info_ptr, | |
414ad644 | 20515 | &bytes_read)); |
ae411497 | 20516 | else |
7c290a04 | 20517 | attr->set_unsigned (cu_header->read_offset (abfd, info_ptr, |
414ad644 | 20518 | &bytes_read)); |
ae411497 TT |
20519 | info_ptr += bytes_read; |
20520 | break; | |
36586728 | 20521 | case DW_FORM_GNU_ref_alt: |
7c290a04 | 20522 | attr->set_unsigned (cu_header->read_offset (abfd, info_ptr, |
414ad644 | 20523 | &bytes_read)); |
36586728 TT |
20524 | info_ptr += bytes_read; |
20525 | break; | |
ae411497 | 20526 | case DW_FORM_addr: |
08feed99 TT |
20527 | { |
20528 | struct gdbarch *gdbarch = objfile->arch (); | |
7c290a04 | 20529 | CORE_ADDR addr = cu_header->read_address (abfd, info_ptr, &bytes_read); |
36d378cf TT |
20530 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr); |
20531 | attr->set_address (addr); | |
08feed99 TT |
20532 | info_ptr += bytes_read; |
20533 | } | |
c906108c SS |
20534 | break; |
20535 | case DW_FORM_block2: | |
7b5a2f43 | 20536 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20537 | blk->size = read_2_bytes (abfd, info_ptr); |
20538 | info_ptr += 2; | |
20539 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20540 | info_ptr += blk->size; | |
9d2246fc | 20541 | attr->set_block (blk); |
c906108c SS |
20542 | break; |
20543 | case DW_FORM_block4: | |
7b5a2f43 | 20544 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20545 | blk->size = read_4_bytes (abfd, info_ptr); |
20546 | info_ptr += 4; | |
20547 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20548 | info_ptr += blk->size; | |
9d2246fc | 20549 | attr->set_block (blk); |
c906108c SS |
20550 | break; |
20551 | case DW_FORM_data2: | |
414ad644 | 20552 | attr->set_unsigned (read_2_bytes (abfd, info_ptr)); |
c906108c SS |
20553 | info_ptr += 2; |
20554 | break; | |
20555 | case DW_FORM_data4: | |
414ad644 | 20556 | attr->set_unsigned (read_4_bytes (abfd, info_ptr)); |
c906108c SS |
20557 | info_ptr += 4; |
20558 | break; | |
20559 | case DW_FORM_data8: | |
414ad644 | 20560 | attr->set_unsigned (read_8_bytes (abfd, info_ptr)); |
c906108c SS |
20561 | info_ptr += 8; |
20562 | break; | |
0224619f JK |
20563 | case DW_FORM_data16: |
20564 | blk = dwarf_alloc_block (cu); | |
20565 | blk->size = 16; | |
20566 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
20567 | info_ptr += 16; | |
9d2246fc | 20568 | attr->set_block (blk); |
0224619f | 20569 | break; |
2dc7f7b3 | 20570 | case DW_FORM_sec_offset: |
7c290a04 | 20571 | attr->set_unsigned (cu_header->read_offset (abfd, info_ptr, |
414ad644 | 20572 | &bytes_read)); |
2dc7f7b3 TT |
20573 | info_ptr += bytes_read; |
20574 | break; | |
41144253 | 20575 | case DW_FORM_loclistx: |
20576 | { | |
7a5f294d TT |
20577 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20578 | &bytes_read)); | |
20579 | info_ptr += bytes_read; | |
41144253 | 20580 | } |
20581 | break; | |
c906108c | 20582 | case DW_FORM_string: |
c6481205 TT |
20583 | attr->set_string_noncanonical (read_direct_string (abfd, info_ptr, |
20584 | &bytes_read)); | |
c906108c SS |
20585 | info_ptr += bytes_read; |
20586 | break; | |
4bdf3d34 | 20587 | case DW_FORM_strp: |
36586728 TT |
20588 | if (!cu->per_cu->is_dwz) |
20589 | { | |
c6481205 TT |
20590 | attr->set_string_noncanonical |
20591 | (read_indirect_string (per_objfile, | |
20592 | abfd, info_ptr, cu_header, | |
20593 | &bytes_read)); | |
36586728 TT |
20594 | info_ptr += bytes_read; |
20595 | break; | |
20596 | } | |
20597 | /* FALLTHROUGH */ | |
43988095 JK |
20598 | case DW_FORM_line_strp: |
20599 | if (!cu->per_cu->is_dwz) | |
20600 | { | |
c6481205 TT |
20601 | attr->set_string_noncanonical |
20602 | (per_objfile->read_line_string (info_ptr, cu_header, | |
20603 | &bytes_read)); | |
43988095 JK |
20604 | info_ptr += bytes_read; |
20605 | break; | |
20606 | } | |
20607 | /* FALLTHROUGH */ | |
36586728 TT |
20608 | case DW_FORM_GNU_strp_alt: |
20609 | { | |
a7308ce0 | 20610 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd, true); |
8266302d TT |
20611 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
20612 | &bytes_read); | |
36586728 | 20613 | |
c6481205 TT |
20614 | attr->set_string_noncanonical |
20615 | (dwz->read_string (objfile, str_offset)); | |
36586728 TT |
20616 | info_ptr += bytes_read; |
20617 | } | |
4bdf3d34 | 20618 | break; |
2dc7f7b3 | 20619 | case DW_FORM_exprloc: |
c906108c | 20620 | case DW_FORM_block: |
7b5a2f43 | 20621 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20622 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20623 | info_ptr += bytes_read; | |
20624 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20625 | info_ptr += blk->size; | |
9d2246fc | 20626 | attr->set_block (blk); |
c906108c SS |
20627 | break; |
20628 | case DW_FORM_block1: | |
7b5a2f43 | 20629 | blk = dwarf_alloc_block (cu); |
c906108c SS |
20630 | blk->size = read_1_byte (abfd, info_ptr); |
20631 | info_ptr += 1; | |
20632 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
20633 | info_ptr += blk->size; | |
9d2246fc | 20634 | attr->set_block (blk); |
c906108c SS |
20635 | break; |
20636 | case DW_FORM_data1: | |
c906108c | 20637 | case DW_FORM_flag: |
414ad644 | 20638 | attr->set_unsigned (read_1_byte (abfd, info_ptr)); |
c906108c SS |
20639 | info_ptr += 1; |
20640 | break; | |
2dc7f7b3 | 20641 | case DW_FORM_flag_present: |
414ad644 | 20642 | attr->set_unsigned (1); |
2dc7f7b3 | 20643 | break; |
c906108c | 20644 | case DW_FORM_sdata: |
1bc397c5 | 20645 | attr->set_signed (read_signed_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20646 | info_ptr += bytes_read; |
20647 | break; | |
18a8505e | 20648 | case DW_FORM_rnglistx: |
7a5f294d TT |
20649 | { |
20650 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, | |
20651 | &bytes_read)); | |
20652 | info_ptr += bytes_read; | |
20653 | } | |
20654 | break; | |
d0ce17d8 | 20655 | case DW_FORM_udata: |
414ad644 | 20656 | attr->set_unsigned (read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
20657 | info_ptr += bytes_read; |
20658 | break; | |
20659 | case DW_FORM_ref1: | |
7c290a04 | 20660 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20661 | + read_1_byte (abfd, info_ptr))); |
c906108c SS |
20662 | info_ptr += 1; |
20663 | break; | |
20664 | case DW_FORM_ref2: | |
7c290a04 | 20665 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20666 | + read_2_bytes (abfd, info_ptr))); |
c906108c SS |
20667 | info_ptr += 2; |
20668 | break; | |
20669 | case DW_FORM_ref4: | |
7c290a04 | 20670 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20671 | + read_4_bytes (abfd, info_ptr))); |
c906108c SS |
20672 | info_ptr += 4; |
20673 | break; | |
613e1657 | 20674 | case DW_FORM_ref8: |
7c290a04 | 20675 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 | 20676 | + read_8_bytes (abfd, info_ptr))); |
613e1657 KB |
20677 | info_ptr += 8; |
20678 | break; | |
55f1336d | 20679 | case DW_FORM_ref_sig8: |
630ed6b9 | 20680 | attr->set_signature (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
20681 | info_ptr += 8; |
20682 | break; | |
c906108c | 20683 | case DW_FORM_ref_udata: |
7c290a04 | 20684 | attr->set_unsigned ((to_underlying (cu_header->sect_off) |
414ad644 TT |
20685 | + read_unsigned_leb128 (abfd, info_ptr, |
20686 | &bytes_read))); | |
c906108c SS |
20687 | info_ptr += bytes_read; |
20688 | break; | |
c906108c | 20689 | case DW_FORM_indirect: |
a8329558 KW |
20690 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
20691 | info_ptr += bytes_read; | |
43988095 JK |
20692 | if (form == DW_FORM_implicit_const) |
20693 | { | |
20694 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
20695 | info_ptr += bytes_read; | |
20696 | } | |
20697 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
7a5f294d | 20698 | info_ptr); |
43988095 JK |
20699 | break; |
20700 | case DW_FORM_implicit_const: | |
1bc397c5 | 20701 | attr->set_signed (implicit_const); |
a8329558 | 20702 | break; |
336d760d | 20703 | case DW_FORM_addrx: |
3019eac3 | 20704 | case DW_FORM_GNU_addr_index: |
fe56917a TT |
20705 | attr->set_unsigned_reprocess (read_unsigned_leb128 (abfd, info_ptr, |
20706 | &bytes_read)); | |
3019eac3 DE |
20707 | info_ptr += bytes_read; |
20708 | break; | |
cf532bd1 | 20709 | case DW_FORM_strx: |
15f18d14 AT |
20710 | case DW_FORM_strx1: |
20711 | case DW_FORM_strx2: | |
20712 | case DW_FORM_strx3: | |
20713 | case DW_FORM_strx4: | |
3019eac3 | 20714 | case DW_FORM_GNU_str_index: |
3019eac3 | 20715 | { |
15f18d14 AT |
20716 | ULONGEST str_index; |
20717 | if (form == DW_FORM_strx1) | |
20718 | { | |
20719 | str_index = read_1_byte (abfd, info_ptr); | |
20720 | info_ptr += 1; | |
20721 | } | |
20722 | else if (form == DW_FORM_strx2) | |
20723 | { | |
20724 | str_index = read_2_bytes (abfd, info_ptr); | |
20725 | info_ptr += 2; | |
20726 | } | |
20727 | else if (form == DW_FORM_strx3) | |
20728 | { | |
20729 | str_index = read_3_bytes (abfd, info_ptr); | |
20730 | info_ptr += 3; | |
20731 | } | |
20732 | else if (form == DW_FORM_strx4) | |
20733 | { | |
20734 | str_index = read_4_bytes (abfd, info_ptr); | |
20735 | info_ptr += 4; | |
20736 | } | |
20737 | else | |
20738 | { | |
20739 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
20740 | info_ptr += bytes_read; | |
20741 | } | |
fe56917a | 20742 | attr->set_unsigned_reprocess (str_index); |
7a5f294d | 20743 | } |
3019eac3 | 20744 | break; |
c906108c | 20745 | default: |
8a3fe4f8 | 20746 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
20747 | dwarf_form_name (form), |
20748 | bfd_get_filename (abfd)); | |
c906108c | 20749 | } |
28e94949 | 20750 | |
36586728 | 20751 | /* Super hack. */ |
cd6c91b4 | 20752 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
20753 | attr->form = DW_FORM_GNU_ref_alt; |
20754 | ||
28e94949 JB |
20755 | /* We have seen instances where the compiler tried to emit a byte |
20756 | size attribute of -1 which ended up being encoded as an unsigned | |
20757 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
20758 | an object of this size seems pretty unlikely so we can relatively | |
20759 | safely treat these cases as if the size attribute was invalid and | |
20760 | treat them as zero by default. */ | |
20761 | if (attr->name == DW_AT_byte_size | |
20762 | && form == DW_FORM_data4 | |
529908cb | 20763 | && attr->as_unsigned () >= 0xffffffff) |
01c66ae6 JB |
20764 | { |
20765 | complaint | |
dda83cd7 SM |
20766 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
20767 | hex_string (attr->as_unsigned ())); | |
414ad644 | 20768 | attr->set_unsigned (0); |
01c66ae6 | 20769 | } |
28e94949 | 20770 | |
c906108c SS |
20771 | return info_ptr; |
20772 | } | |
20773 | ||
a8329558 KW |
20774 | /* Read an attribute described by an abbreviated attribute. */ |
20775 | ||
d521ce57 | 20776 | static const gdb_byte * |
dee91e82 | 20777 | read_attribute (const struct die_reader_specs *reader, |
4444f407 | 20778 | struct attribute *attr, const struct attr_abbrev *abbrev, |
7a5f294d | 20779 | const gdb_byte *info_ptr) |
a8329558 KW |
20780 | { |
20781 | attr->name = abbrev->name; | |
c6481205 | 20782 | attr->string_is_canonical = 0; |
fe56917a | 20783 | attr->requires_reprocessing = 0; |
43988095 | 20784 | return read_attribute_value (reader, attr, abbrev->form, |
7a5f294d | 20785 | abbrev->implicit_const, info_ptr); |
a8329558 KW |
20786 | } |
20787 | ||
43988095 JK |
20788 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
20789 | ||
20790 | static const char * | |
976ca316 | 20791 | read_indirect_string_at_offset (dwarf2_per_objfile *per_objfile, |
4f44ae6c | 20792 | LONGEST str_offset) |
43988095 | 20793 | { |
976ca316 SM |
20794 | return per_objfile->per_bfd->str.read_string (per_objfile->objfile, |
20795 | str_offset, "DW_FORM_strp"); | |
c906108c SS |
20796 | } |
20797 | ||
43988095 JK |
20798 | /* Return pointer to string at .debug_str offset as read from BUF. |
20799 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
20800 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
20801 | ||
d521ce57 | 20802 | static const char * |
976ca316 | 20803 | read_indirect_string (dwarf2_per_objfile *per_objfile, bfd *abfd, |
ed2dc618 | 20804 | const gdb_byte *buf, |
cf2c3c16 TT |
20805 | const struct comp_unit_head *cu_header, |
20806 | unsigned int *bytes_read_ptr) | |
20807 | { | |
8266302d | 20808 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 20809 | |
976ca316 | 20810 | return read_indirect_string_at_offset (per_objfile, str_offset); |
cf2c3c16 TT |
20811 | } |
20812 | ||
86c0bb4c | 20813 | /* See read.h. */ |
43988095 | 20814 | |
86c0bb4c TT |
20815 | const char * |
20816 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
5989a64e SM |
20817 | const struct comp_unit_head *cu_header, |
20818 | unsigned int *bytes_read_ptr) | |
43988095 | 20819 | { |
86c0bb4c | 20820 | bfd *abfd = objfile->obfd; |
8266302d | 20821 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 20822 | |
5989a64e | 20823 | return per_bfd->line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
20824 | } |
20825 | ||
3019eac3 | 20826 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 20827 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
20828 | ADDR_SIZE is the size of addresses from the CU header. */ |
20829 | ||
20830 | static CORE_ADDR | |
976ca316 SM |
20831 | read_addr_index_1 (dwarf2_per_objfile *per_objfile, unsigned int addr_index, |
20832 | gdb::optional<ULONGEST> addr_base, int addr_size) | |
3019eac3 | 20833 | { |
976ca316 | 20834 | struct objfile *objfile = per_objfile->objfile; |
3019eac3 DE |
20835 | bfd *abfd = objfile->obfd; |
20836 | const gdb_byte *info_ptr; | |
18a8505e | 20837 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 20838 | |
976ca316 SM |
20839 | per_objfile->per_bfd->addr.read (objfile); |
20840 | if (per_objfile->per_bfd->addr.buffer == NULL) | |
3019eac3 | 20841 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), |
4262abfb | 20842 | objfile_name (objfile)); |
18a8505e | 20843 | if (addr_base_or_zero + addr_index * addr_size |
976ca316 | 20844 | >= per_objfile->per_bfd->addr.size) |
3019eac3 DE |
20845 | error (_("DW_FORM_addr_index pointing outside of " |
20846 | ".debug_addr section [in module %s]"), | |
4262abfb | 20847 | objfile_name (objfile)); |
976ca316 SM |
20848 | info_ptr = (per_objfile->per_bfd->addr.buffer + addr_base_or_zero |
20849 | + addr_index * addr_size); | |
3019eac3 DE |
20850 | if (addr_size == 4) |
20851 | return bfd_get_32 (abfd, info_ptr); | |
20852 | else | |
20853 | return bfd_get_64 (abfd, info_ptr); | |
20854 | } | |
20855 | ||
20856 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
20857 | ||
20858 | static CORE_ADDR | |
20859 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
20860 | { | |
5e22e966 | 20861 | return read_addr_index_1 (cu->per_objfile, addr_index, |
518817b3 | 20862 | cu->addr_base, cu->header.addr_size); |
3019eac3 DE |
20863 | } |
20864 | ||
20865 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
20866 | ||
20867 | static CORE_ADDR | |
d521ce57 | 20868 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
20869 | unsigned int *bytes_read) |
20870 | { | |
5e22e966 | 20871 | bfd *abfd = cu->per_objfile->objfile->obfd; |
3019eac3 DE |
20872 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
20873 | ||
20874 | return read_addr_index (cu, addr_index); | |
20875 | } | |
20876 | ||
450a1bfc | 20877 | /* See read.h. */ |
3019eac3 DE |
20878 | |
20879 | CORE_ADDR | |
82ca3f51 | 20880 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, |
976ca316 | 20881 | dwarf2_per_objfile *per_objfile, |
82ca3f51 | 20882 | unsigned int addr_index) |
3019eac3 | 20883 | { |
976ca316 | 20884 | struct dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
18a8505e | 20885 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
20886 | int addr_size; |
20887 | ||
3019eac3 DE |
20888 | /* We need addr_base and addr_size. |
20889 | If we don't have PER_CU->cu, we have to get it. | |
20890 | Nasty, but the alternative is storing the needed info in PER_CU, | |
20891 | which at this point doesn't seem justified: it's not clear how frequently | |
20892 | it would get used and it would increase the size of every PER_CU. | |
20893 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
20894 | so we're not in uncharted territory here. | |
20895 | Alas we need to be a bit more complicated as addr_base is contained | |
20896 | in the DIE. | |
20897 | ||
20898 | We don't need to read the entire CU(/TU). | |
20899 | We just need the header and top level die. | |
a1b64ce1 | 20900 | |
3019eac3 | 20901 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 20902 | For now we skip this optimization. */ |
3019eac3 DE |
20903 | |
20904 | if (cu != NULL) | |
20905 | { | |
20906 | addr_base = cu->addr_base; | |
20907 | addr_size = cu->header.addr_size; | |
20908 | } | |
20909 | else | |
20910 | { | |
976ca316 | 20911 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
20912 | addr_base = reader.cu->addr_base; |
20913 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
20914 | } |
20915 | ||
976ca316 | 20916 | return read_addr_index_1 (per_objfile, addr_index, addr_base, addr_size); |
3019eac3 DE |
20917 | } |
20918 | ||
18a8505e AT |
20919 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
20920 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
20921 | DWO file. */ | |
3019eac3 | 20922 | |
d521ce57 | 20923 | static const char * |
18a8505e AT |
20924 | read_str_index (struct dwarf2_cu *cu, |
20925 | struct dwarf2_section_info *str_section, | |
20926 | struct dwarf2_section_info *str_offsets_section, | |
20927 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 20928 | { |
976ca316 SM |
20929 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
20930 | struct objfile *objfile = per_objfile->objfile; | |
c5164cbc | 20931 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 20932 | bfd *abfd = objfile->obfd; |
d521ce57 | 20933 | const gdb_byte *info_ptr; |
3019eac3 | 20934 | ULONGEST str_offset; |
cf532bd1 | 20935 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 20936 | |
96b79293 TT |
20937 | str_section->read (objfile); |
20938 | str_offsets_section->read (objfile); | |
73869dc2 | 20939 | if (str_section->buffer == NULL) |
18a8505e | 20940 | error (_("%s used without %s section" |
9d8780f0 | 20941 | " in CU at offset %s [in module %s]"), |
96b79293 | 20942 | form_name, str_section->get_name (), |
dda83cd7 | 20943 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20944 | if (str_offsets_section->buffer == NULL) |
18a8505e | 20945 | error (_("%s used without %s section" |
9d8780f0 | 20946 | " in CU at offset %s [in module %s]"), |
96b79293 | 20947 | form_name, str_section->get_name (), |
dda83cd7 | 20948 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 20949 | info_ptr = (str_offsets_section->buffer |
18a8505e | 20950 | + str_offsets_base |
3019eac3 DE |
20951 | + str_index * cu->header.offset_size); |
20952 | if (cu->header.offset_size == 4) | |
20953 | str_offset = bfd_get_32 (abfd, info_ptr); | |
20954 | else | |
20955 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 20956 | if (str_offset >= str_section->size) |
57d63ce2 | 20957 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
20958 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
20959 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20960 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
20961 | } |
20962 | ||
18a8505e AT |
20963 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
20964 | ||
20965 | static const char * | |
20966 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
20967 | { | |
20968 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
20969 | ? reader->cu->header.addr_size : 0; | |
20970 | return read_str_index (reader->cu, | |
20971 | &reader->dwo_file->sections.str, | |
20972 | &reader->dwo_file->sections.str_offsets, | |
20973 | str_offsets_base, str_index); | |
20974 | } | |
20975 | ||
20976 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
20977 | ||
20978 | static const char * | |
20979 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
20980 | { | |
5e22e966 | 20981 | struct objfile *objfile = cu->per_objfile->objfile; |
18a8505e AT |
20982 | const char *objf_name = objfile_name (objfile); |
20983 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
20984 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
20985 | ||
20986 | if (!cu->str_offsets_base.has_value ()) | |
20987 | error (_("%s used in Fission stub without %s" | |
20988 | " in CU at offset 0x%lx [in module %s]"), | |
20989 | form_name, str_offsets_attr_name, | |
20990 | (long) cu->header.offset_size, objf_name); | |
20991 | ||
20992 | return read_str_index (cu, | |
5e22e966 SM |
20993 | &cu->per_objfile->per_bfd->str, |
20994 | &cu->per_objfile->per_bfd->str_offsets, | |
18a8505e AT |
20995 | *cu->str_offsets_base, str_index); |
20996 | } | |
20997 | ||
3019eac3 DE |
20998 | /* Return the length of an LEB128 number in BUF. */ |
20999 | ||
21000 | static int | |
21001 | leb128_size (const gdb_byte *buf) | |
21002 | { | |
21003 | const gdb_byte *begin = buf; | |
21004 | gdb_byte byte; | |
21005 | ||
21006 | while (1) | |
21007 | { | |
21008 | byte = *buf++; | |
21009 | if ((byte & 128) == 0) | |
21010 | return buf - begin; | |
21011 | } | |
21012 | } | |
21013 | ||
c906108c | 21014 | static void |
e142c38c | 21015 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
21016 | { |
21017 | switch (lang) | |
21018 | { | |
21019 | case DW_LANG_C89: | |
76bee0cc | 21020 | case DW_LANG_C99: |
0cfd832f | 21021 | case DW_LANG_C11: |
c906108c | 21022 | case DW_LANG_C: |
d1be3247 | 21023 | case DW_LANG_UPC: |
e142c38c | 21024 | cu->language = language_c; |
c906108c | 21025 | break; |
9c37b5ae | 21026 | case DW_LANG_Java: |
c906108c | 21027 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
21028 | case DW_LANG_C_plus_plus_11: |
21029 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 21030 | cu->language = language_cplus; |
c906108c | 21031 | break; |
6aecb9c2 JB |
21032 | case DW_LANG_D: |
21033 | cu->language = language_d; | |
21034 | break; | |
c906108c SS |
21035 | case DW_LANG_Fortran77: |
21036 | case DW_LANG_Fortran90: | |
b21b22e0 | 21037 | case DW_LANG_Fortran95: |
f7de9aab MW |
21038 | case DW_LANG_Fortran03: |
21039 | case DW_LANG_Fortran08: | |
e142c38c | 21040 | cu->language = language_fortran; |
c906108c | 21041 | break; |
a766d390 DE |
21042 | case DW_LANG_Go: |
21043 | cu->language = language_go; | |
21044 | break; | |
c906108c | 21045 | case DW_LANG_Mips_Assembler: |
e142c38c | 21046 | cu->language = language_asm; |
c906108c SS |
21047 | break; |
21048 | case DW_LANG_Ada83: | |
8aaf0b47 | 21049 | case DW_LANG_Ada95: |
bc5f45f8 JB |
21050 | cu->language = language_ada; |
21051 | break; | |
72019c9c GM |
21052 | case DW_LANG_Modula2: |
21053 | cu->language = language_m2; | |
21054 | break; | |
fe8e67fd PM |
21055 | case DW_LANG_Pascal83: |
21056 | cu->language = language_pascal; | |
21057 | break; | |
22566fbd DJ |
21058 | case DW_LANG_ObjC: |
21059 | cu->language = language_objc; | |
21060 | break; | |
c44af4eb TT |
21061 | case DW_LANG_Rust: |
21062 | case DW_LANG_Rust_old: | |
21063 | cu->language = language_rust; | |
21064 | break; | |
c906108c SS |
21065 | case DW_LANG_Cobol74: |
21066 | case DW_LANG_Cobol85: | |
c906108c | 21067 | default: |
e142c38c | 21068 | cu->language = language_minimal; |
c906108c SS |
21069 | break; |
21070 | } | |
e142c38c | 21071 | cu->language_defn = language_def (cu->language); |
c906108c SS |
21072 | } |
21073 | ||
21074 | /* Return the named attribute or NULL if not there. */ | |
21075 | ||
21076 | static struct attribute * | |
e142c38c | 21077 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 21078 | { |
a48e046c | 21079 | for (;;) |
c906108c | 21080 | { |
a48e046c TT |
21081 | unsigned int i; |
21082 | struct attribute *spec = NULL; | |
21083 | ||
21084 | for (i = 0; i < die->num_attrs; ++i) | |
21085 | { | |
21086 | if (die->attrs[i].name == name) | |
21087 | return &die->attrs[i]; | |
21088 | if (die->attrs[i].name == DW_AT_specification | |
21089 | || die->attrs[i].name == DW_AT_abstract_origin) | |
21090 | spec = &die->attrs[i]; | |
21091 | } | |
21092 | ||
21093 | if (!spec) | |
21094 | break; | |
c906108c | 21095 | |
f2f0e013 | 21096 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 21097 | } |
c5aa993b | 21098 | |
c906108c SS |
21099 | return NULL; |
21100 | } | |
21101 | ||
7d45c7c3 KB |
21102 | /* Return the string associated with a string-typed attribute, or NULL if it |
21103 | is either not found or is of an incorrect type. */ | |
21104 | ||
21105 | static const char * | |
21106 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
21107 | { | |
21108 | struct attribute *attr; | |
21109 | const char *str = NULL; | |
21110 | ||
21111 | attr = dwarf2_attr (die, name, cu); | |
21112 | ||
21113 | if (attr != NULL) | |
21114 | { | |
95f982e5 | 21115 | str = attr->as_string (); |
e61108c9 | 21116 | if (str == nullptr) |
dda83cd7 | 21117 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
21118 | "DIE at %s in module %s"), |
21119 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
5e22e966 | 21120 | objfile_name (cu->per_objfile->objfile)); |
7d45c7c3 KB |
21121 | } |
21122 | ||
21123 | return str; | |
21124 | } | |
21125 | ||
a084a2a6 | 21126 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 21127 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
21128 | static const char * |
21129 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
21130 | { | |
21131 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
21132 | if (dwo_name == nullptr) | |
21133 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
21134 | return dwo_name; | |
21135 | } | |
21136 | ||
05cf31d1 JB |
21137 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
21138 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 21139 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
21140 | |
21141 | static int | |
21142 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
21143 | { | |
21144 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
21145 | ||
c45bc3f8 | 21146 | return attr != nullptr && attr->as_boolean (); |
05cf31d1 JB |
21147 | } |
21148 | ||
3ca72b44 | 21149 | static int |
e142c38c | 21150 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 21151 | { |
05cf31d1 JB |
21152 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
21153 | which value is non-zero. However, we have to be careful with | |
21154 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
21155 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
21156 | end up accidently finding a declaration attribute that belongs | |
21157 | to a different DIE referenced by the specification attribute, | |
21158 | even though the given DIE does not have a declaration attribute. */ | |
21159 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
21160 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
21161 | } |
21162 | ||
63d06c5c | 21163 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 21164 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
21165 | containing the return value on output. If there is no |
21166 | specification, but there is an abstract origin, that is | |
21167 | returned. */ | |
63d06c5c DC |
21168 | |
21169 | static struct die_info * | |
f2f0e013 | 21170 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 21171 | { |
f2f0e013 DJ |
21172 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
21173 | *spec_cu); | |
63d06c5c | 21174 | |
edb3359d DJ |
21175 | if (spec_attr == NULL) |
21176 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
21177 | ||
63d06c5c DC |
21178 | if (spec_attr == NULL) |
21179 | return NULL; | |
21180 | else | |
f2f0e013 | 21181 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 21182 | } |
c906108c | 21183 | |
527f3840 JK |
21184 | /* Stub for free_line_header to match void * callback types. */ |
21185 | ||
21186 | static void | |
21187 | free_line_header_voidp (void *arg) | |
21188 | { | |
9a3c8263 | 21189 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 21190 | |
fff8551c | 21191 | delete lh; |
527f3840 JK |
21192 | } |
21193 | ||
83769d0b | 21194 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
21195 | |
21196 | static struct dwarf2_section_info * | |
21197 | get_debug_line_section (struct dwarf2_cu *cu) | |
21198 | { | |
21199 | struct dwarf2_section_info *section; | |
976ca316 | 21200 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
36586728 TT |
21201 | |
21202 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
21203 | DWO file. */ | |
21204 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
21205 | section = &cu->dwo_unit->dwo_file->sections.line; | |
21206 | else if (cu->per_cu->is_dwz) | |
21207 | { | |
a7308ce0 | 21208 | dwz_file *dwz = dwarf2_get_dwz_file (per_objfile->per_bfd, true); |
36586728 TT |
21209 | |
21210 | section = &dwz->line; | |
21211 | } | |
21212 | else | |
976ca316 | 21213 | section = &per_objfile->per_bfd->line; |
36586728 TT |
21214 | |
21215 | return section; | |
21216 | } | |
21217 | ||
debd256d | 21218 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 21219 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 21220 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
21221 | Returns NULL if there is a problem reading the header, e.g., if it |
21222 | has a version we don't understand. | |
debd256d JB |
21223 | |
21224 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
21225 | the returned object point into the dwarf line section buffer, |
21226 | and must not be freed. */ | |
ae2de4f8 | 21227 | |
fff8551c | 21228 | static line_header_up |
9c541725 | 21229 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 21230 | { |
3019eac3 | 21231 | struct dwarf2_section_info *section; |
976ca316 | 21232 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 | 21233 | |
36586728 | 21234 | section = get_debug_line_section (cu); |
976ca316 | 21235 | section->read (per_objfile->objfile); |
3019eac3 | 21236 | if (section->buffer == NULL) |
debd256d | 21237 | { |
3019eac3 | 21238 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 21239 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 21240 | else |
b98664d3 | 21241 | complaint (_("missing .debug_line section")); |
debd256d JB |
21242 | return 0; |
21243 | } | |
21244 | ||
0df7ad3a | 21245 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
976ca316 | 21246 | per_objfile, section, &cu->header); |
debd256d | 21247 | } |
c906108c | 21248 | |
c6da4cef | 21249 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 21250 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 21251 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
21252 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
21253 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 21254 | |
d521ce57 | 21255 | static const char * |
7ba99d21 | 21256 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 21257 | const dwarf2_psymtab *pst, |
c89b44cd TT |
21258 | const char *comp_dir, |
21259 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 21260 | { |
d521ce57 TT |
21261 | const char *include_name = fe.name; |
21262 | const char *include_name_to_compare = include_name; | |
72b9f47f | 21263 | const char *pst_filename; |
c6da4cef DE |
21264 | int file_is_pst; |
21265 | ||
8c43009f | 21266 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 21267 | |
c89b44cd | 21268 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
21269 | if (!IS_ABSOLUTE_PATH (include_name) |
21270 | && (dir_name != NULL || comp_dir != NULL)) | |
21271 | { | |
21272 | /* Avoid creating a duplicate psymtab for PST. | |
21273 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
21274 | Before we do the comparison, however, we need to account | |
21275 | for DIR_NAME and COMP_DIR. | |
21276 | First prepend dir_name (if non-NULL). If we still don't | |
21277 | have an absolute path prepend comp_dir (if non-NULL). | |
21278 | However, the directory we record in the include-file's | |
21279 | psymtab does not contain COMP_DIR (to match the | |
21280 | corresponding symtab(s)). | |
21281 | ||
21282 | Example: | |
21283 | ||
21284 | bash$ cd /tmp | |
21285 | bash$ gcc -g ./hello.c | |
21286 | include_name = "hello.c" | |
21287 | dir_name = "." | |
21288 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
21289 | DW_AT_name = "./hello.c" |
21290 | ||
21291 | */ | |
c6da4cef DE |
21292 | |
21293 | if (dir_name != NULL) | |
21294 | { | |
c89b44cd TT |
21295 | name_holder->reset (concat (dir_name, SLASH_STRING, |
21296 | include_name, (char *) NULL)); | |
21297 | include_name = name_holder->get (); | |
c6da4cef | 21298 | include_name_to_compare = include_name; |
c6da4cef DE |
21299 | } |
21300 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
21301 | { | |
c89b44cd TT |
21302 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
21303 | include_name, (char *) NULL)); | |
21304 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
21305 | } |
21306 | } | |
21307 | ||
21308 | pst_filename = pst->filename; | |
c89b44cd | 21309 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
21310 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
21311 | { | |
c89b44cd TT |
21312 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
21313 | pst_filename, (char *) NULL)); | |
21314 | pst_filename = copied_name.get (); | |
c6da4cef DE |
21315 | } |
21316 | ||
1e3fad37 | 21317 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 21318 | |
c6da4cef DE |
21319 | if (file_is_pst) |
21320 | return NULL; | |
21321 | return include_name; | |
21322 | } | |
21323 | ||
d9b3de22 DE |
21324 | /* State machine to track the state of the line number program. */ |
21325 | ||
6f77053d | 21326 | class lnp_state_machine |
d9b3de22 | 21327 | { |
6f77053d PA |
21328 | public: |
21329 | /* Initialize a machine state for the start of a line number | |
21330 | program. */ | |
804d2729 TT |
21331 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
21332 | bool record_lines_p); | |
6f77053d | 21333 | |
8c43009f PA |
21334 | file_entry *current_file () |
21335 | { | |
21336 | /* lh->file_names is 0-based, but the file name numbers in the | |
21337 | statement program are 1-based. */ | |
6f77053d PA |
21338 | return m_line_header->file_name_at (m_file); |
21339 | } | |
21340 | ||
21341 | /* Record the line in the state machine. END_SEQUENCE is true if | |
21342 | we're processing the end of a sequence. */ | |
21343 | void record_line (bool end_sequence); | |
21344 | ||
a8caed5d | 21345 | /* Check ADDRESS is -1, or zero and less than UNRELOCATED_LOWPC, and if true |
7ab6656f | 21346 | nop-out rest of the lines in this sequence. */ |
6f77053d PA |
21347 | void check_line_address (struct dwarf2_cu *cu, |
21348 | const gdb_byte *line_ptr, | |
7ab6656f | 21349 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
21350 | |
21351 | void handle_set_discriminator (unsigned int discriminator) | |
21352 | { | |
21353 | m_discriminator = discriminator; | |
21354 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
21355 | } | |
21356 | ||
21357 | /* Handle DW_LNE_set_address. */ | |
21358 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
21359 | { | |
21360 | m_op_index = 0; | |
21361 | address += baseaddr; | |
21362 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
21363 | } | |
21364 | ||
21365 | /* Handle DW_LNS_advance_pc. */ | |
21366 | void handle_advance_pc (CORE_ADDR adjust); | |
21367 | ||
21368 | /* Handle a special opcode. */ | |
21369 | void handle_special_opcode (unsigned char op_code); | |
21370 | ||
21371 | /* Handle DW_LNS_advance_line. */ | |
21372 | void handle_advance_line (int line_delta) | |
21373 | { | |
21374 | advance_line (line_delta); | |
21375 | } | |
21376 | ||
21377 | /* Handle DW_LNS_set_file. */ | |
21378 | void handle_set_file (file_name_index file); | |
21379 | ||
21380 | /* Handle DW_LNS_negate_stmt. */ | |
21381 | void handle_negate_stmt () | |
21382 | { | |
21383 | m_is_stmt = !m_is_stmt; | |
21384 | } | |
21385 | ||
21386 | /* Handle DW_LNS_const_add_pc. */ | |
21387 | void handle_const_add_pc (); | |
21388 | ||
21389 | /* Handle DW_LNS_fixed_advance_pc. */ | |
21390 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
21391 | { | |
21392 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21393 | m_op_index = 0; | |
21394 | } | |
21395 | ||
21396 | /* Handle DW_LNS_copy. */ | |
21397 | void handle_copy () | |
21398 | { | |
21399 | record_line (false); | |
21400 | m_discriminator = 0; | |
21401 | } | |
21402 | ||
21403 | /* Handle DW_LNE_end_sequence. */ | |
21404 | void handle_end_sequence () | |
21405 | { | |
804d2729 | 21406 | m_currently_recording_lines = true; |
6f77053d PA |
21407 | } |
21408 | ||
21409 | private: | |
21410 | /* Advance the line by LINE_DELTA. */ | |
21411 | void advance_line (int line_delta) | |
21412 | { | |
21413 | m_line += line_delta; | |
21414 | ||
21415 | if (line_delta != 0) | |
21416 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
21417 | } |
21418 | ||
804d2729 TT |
21419 | struct dwarf2_cu *m_cu; |
21420 | ||
6f77053d PA |
21421 | gdbarch *m_gdbarch; |
21422 | ||
21423 | /* True if we're recording lines. | |
21424 | Otherwise we're building partial symtabs and are just interested in | |
21425 | finding include files mentioned by the line number program. */ | |
21426 | bool m_record_lines_p; | |
21427 | ||
8c43009f | 21428 | /* The line number header. */ |
6f77053d | 21429 | line_header *m_line_header; |
8c43009f | 21430 | |
6f77053d PA |
21431 | /* These are part of the standard DWARF line number state machine, |
21432 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 21433 | |
6f77053d | 21434 | unsigned char m_op_index = 0; |
7ba99d21 AT |
21435 | /* The line table index of the current file. */ |
21436 | file_name_index m_file = 1; | |
6f77053d PA |
21437 | unsigned int m_line = 1; |
21438 | ||
21439 | /* These are initialized in the constructor. */ | |
21440 | ||
21441 | CORE_ADDR m_address; | |
21442 | bool m_is_stmt; | |
21443 | unsigned int m_discriminator; | |
d9b3de22 DE |
21444 | |
21445 | /* Additional bits of state we need to track. */ | |
21446 | ||
21447 | /* The last file that we called dwarf2_start_subfile for. | |
21448 | This is only used for TLLs. */ | |
6f77053d | 21449 | unsigned int m_last_file = 0; |
d9b3de22 | 21450 | /* The last file a line number was recorded for. */ |
6f77053d | 21451 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 21452 | |
1313c56e AB |
21453 | /* The address of the last line entry. */ |
21454 | CORE_ADDR m_last_address; | |
21455 | ||
21456 | /* Set to true when a previous line at the same address (using | |
21457 | m_last_address) had m_is_stmt true. This is reset to false when a | |
21458 | line entry at a new address (m_address different to m_last_address) is | |
21459 | processed. */ | |
21460 | bool m_stmt_at_address = false; | |
21461 | ||
804d2729 TT |
21462 | /* When true, record the lines we decode. */ |
21463 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
21464 | |
21465 | /* The last line number that was recorded, used to coalesce | |
21466 | consecutive entries for the same line. This can happen, for | |
21467 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
21468 | unsigned int m_last_line = 0; |
21469 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 21470 | }; |
d9b3de22 | 21471 | |
6f77053d PA |
21472 | void |
21473 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
21474 | { | |
21475 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
21476 | / m_line_header->maximum_ops_per_instruction) | |
21477 | * m_line_header->minimum_instruction_length); | |
21478 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21479 | m_op_index = ((m_op_index + adjust) | |
21480 | % m_line_header->maximum_ops_per_instruction); | |
21481 | } | |
d9b3de22 | 21482 | |
6f77053d PA |
21483 | void |
21484 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 21485 | { |
6f77053d | 21486 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
21487 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
21488 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
21489 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
21490 | / m_line_header->maximum_ops_per_instruction) |
21491 | * m_line_header->minimum_instruction_length); | |
21492 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 21493 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 21494 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 21495 | |
258bf0ee | 21496 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
21497 | advance_line (line_delta); |
21498 | record_line (false); | |
21499 | m_discriminator = 0; | |
21500 | } | |
d9b3de22 | 21501 | |
6f77053d PA |
21502 | void |
21503 | lnp_state_machine::handle_set_file (file_name_index file) | |
21504 | { | |
21505 | m_file = file; | |
21506 | ||
21507 | const file_entry *fe = current_file (); | |
21508 | if (fe == NULL) | |
21509 | dwarf2_debug_line_missing_file_complaint (); | |
21510 | else if (m_record_lines_p) | |
21511 | { | |
21512 | const char *dir = fe->include_dir (m_line_header); | |
21513 | ||
c24bdb02 | 21514 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21515 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 21516 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
21517 | } |
21518 | } | |
21519 | ||
21520 | void | |
21521 | lnp_state_machine::handle_const_add_pc () | |
21522 | { | |
21523 | CORE_ADDR adjust | |
21524 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
21525 | ||
21526 | CORE_ADDR addr_adj | |
21527 | = (((m_op_index + adjust) | |
21528 | / m_line_header->maximum_ops_per_instruction) | |
21529 | * m_line_header->minimum_instruction_length); | |
21530 | ||
21531 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
21532 | m_op_index = ((m_op_index + adjust) | |
21533 | % m_line_header->maximum_ops_per_instruction); | |
21534 | } | |
d9b3de22 | 21535 | |
a05a36a5 DE |
21536 | /* Return non-zero if we should add LINE to the line number table. |
21537 | LINE is the line to add, LAST_LINE is the last line that was added, | |
21538 | LAST_SUBFILE is the subfile for LAST_LINE. | |
21539 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
21540 | had a non-zero discriminator. | |
21541 | ||
21542 | We have to be careful in the presence of discriminators. | |
21543 | E.g., for this line: | |
21544 | ||
21545 | for (i = 0; i < 100000; i++); | |
21546 | ||
21547 | clang can emit four line number entries for that one line, | |
21548 | each with a different discriminator. | |
21549 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
21550 | ||
21551 | However, we want gdb to coalesce all four entries into one. | |
21552 | Otherwise the user could stepi into the middle of the line and | |
21553 | gdb would get confused about whether the pc really was in the | |
21554 | middle of the line. | |
21555 | ||
21556 | Things are further complicated by the fact that two consecutive | |
21557 | line number entries for the same line is a heuristic used by gcc | |
21558 | to denote the end of the prologue. So we can't just discard duplicate | |
21559 | entries, we have to be selective about it. The heuristic we use is | |
21560 | that we only collapse consecutive entries for the same line if at least | |
21561 | one of those entries has a non-zero discriminator. PR 17276. | |
21562 | ||
21563 | Note: Addresses in the line number state machine can never go backwards | |
21564 | within one sequence, thus this coalescing is ok. */ | |
21565 | ||
21566 | static int | |
804d2729 TT |
21567 | dwarf_record_line_p (struct dwarf2_cu *cu, |
21568 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
21569 | int line_has_non_zero_discriminator, |
21570 | struct subfile *last_subfile) | |
21571 | { | |
c24bdb02 | 21572 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
21573 | return 1; |
21574 | if (line != last_line) | |
21575 | return 1; | |
21576 | /* Same line for the same file that we've seen already. | |
21577 | As a last check, for pr 17276, only record the line if the line | |
21578 | has never had a non-zero discriminator. */ | |
21579 | if (!line_has_non_zero_discriminator) | |
21580 | return 1; | |
21581 | return 0; | |
21582 | } | |
21583 | ||
804d2729 TT |
21584 | /* Use the CU's builder to record line number LINE beginning at |
21585 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
21586 | |
21587 | static void | |
d9b3de22 | 21588 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 21589 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 21590 | struct dwarf2_cu *cu) |
252a6764 DE |
21591 | { |
21592 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
21593 | ||
27e0867f DE |
21594 | if (dwarf_line_debug) |
21595 | { | |
21596 | fprintf_unfiltered (gdb_stdlog, | |
21597 | "Recording line %u, file %s, address %s\n", | |
21598 | line, lbasename (subfile->name), | |
21599 | paddress (gdbarch, address)); | |
21600 | } | |
21601 | ||
804d2729 | 21602 | if (cu != nullptr) |
8c95582d | 21603 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
21604 | } |
21605 | ||
21606 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
21607 | Mark the end of a set of line number records. | |
d9b3de22 | 21608 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
21609 | If SUBFILE is NULL the request is ignored. */ |
21610 | ||
21611 | static void | |
21612 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 21613 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 21614 | { |
27e0867f DE |
21615 | if (subfile == NULL) |
21616 | return; | |
21617 | ||
21618 | if (dwarf_line_debug) | |
21619 | { | |
21620 | fprintf_unfiltered (gdb_stdlog, | |
21621 | "Finishing current line, file %s, address %s\n", | |
21622 | lbasename (subfile->name), | |
21623 | paddress (gdbarch, address)); | |
21624 | } | |
21625 | ||
8c95582d | 21626 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
21627 | } |
21628 | ||
6f77053d PA |
21629 | void |
21630 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 21631 | { |
d9b3de22 DE |
21632 | if (dwarf_line_debug) |
21633 | { | |
21634 | fprintf_unfiltered (gdb_stdlog, | |
21635 | "Processing actual line %u: file %u," | |
94a72be7 | 21636 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 21637 | m_line, m_file, |
6f77053d | 21638 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
21639 | m_is_stmt, m_discriminator, |
21640 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
21641 | } |
21642 | ||
6f77053d | 21643 | file_entry *fe = current_file (); |
8c43009f PA |
21644 | |
21645 | if (fe == NULL) | |
d9b3de22 DE |
21646 | dwarf2_debug_line_missing_file_complaint (); |
21647 | /* For now we ignore lines not starting on an instruction boundary. | |
21648 | But not when processing end_sequence for compatibility with the | |
21649 | previous version of the code. */ | |
6f77053d | 21650 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 21651 | { |
8c43009f | 21652 | fe->included_p = 1; |
8c95582d | 21653 | if (m_record_lines_p) |
d9b3de22 | 21654 | { |
1313c56e AB |
21655 | /* When we switch files we insert an end maker in the first file, |
21656 | switch to the second file and add a new line entry. The | |
21657 | problem is that the end marker inserted in the first file will | |
21658 | discard any previous line entries at the same address. If the | |
21659 | line entries in the first file are marked as is-stmt, while | |
21660 | the new line in the second file is non-stmt, then this means | |
21661 | the end marker will discard is-stmt lines so we can have a | |
21662 | non-stmt line. This means that there are less addresses at | |
21663 | which the user can insert a breakpoint. | |
21664 | ||
21665 | To improve this we track the last address in m_last_address, | |
21666 | and whether we have seen an is-stmt at this address. Then | |
21667 | when switching files, if we have seen a stmt at the current | |
21668 | address, and we are switching to create a non-stmt line, then | |
21669 | discard the new line. */ | |
21670 | bool file_changed | |
21671 | = m_last_subfile != m_cu->get_builder ()->get_current_subfile (); | |
21672 | bool ignore_this_line | |
dda83cd7 SM |
21673 | = ((file_changed && !end_sequence && m_last_address == m_address |
21674 | && !m_is_stmt && m_stmt_at_address) | |
21675 | || (!end_sequence && m_line == 0)); | |
1313c56e AB |
21676 | |
21677 | if ((file_changed && !ignore_this_line) || end_sequence) | |
d9b3de22 | 21678 | { |
804d2729 TT |
21679 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
21680 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
21681 | } |
21682 | ||
1313c56e | 21683 | if (!end_sequence && !ignore_this_line) |
d9b3de22 | 21684 | { |
8c95582d AB |
21685 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
21686 | ||
804d2729 | 21687 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
21688 | m_line_has_non_zero_discriminator, |
21689 | m_last_subfile)) | |
d9b3de22 | 21690 | { |
c24bdb02 | 21691 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 21692 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 21693 | builder->get_current_subfile (), |
8c95582d | 21694 | m_line, m_address, is_stmt, |
804d2729 | 21695 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 21696 | } |
c24bdb02 | 21697 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21698 | m_last_line = m_line; |
d9b3de22 DE |
21699 | } |
21700 | } | |
21701 | } | |
1313c56e AB |
21702 | |
21703 | /* Track whether we have seen any m_is_stmt true at m_address in case we | |
21704 | have multiple line table entries all at m_address. */ | |
21705 | if (m_last_address != m_address) | |
21706 | { | |
21707 | m_stmt_at_address = false; | |
21708 | m_last_address = m_address; | |
21709 | } | |
21710 | m_stmt_at_address |= m_is_stmt; | |
d9b3de22 DE |
21711 | } |
21712 | ||
804d2729 TT |
21713 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
21714 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 21715 | { |
804d2729 | 21716 | m_cu = cu; |
6f77053d PA |
21717 | m_gdbarch = arch; |
21718 | m_record_lines_p = record_lines_p; | |
21719 | m_line_header = lh; | |
d9b3de22 | 21720 | |
804d2729 | 21721 | m_currently_recording_lines = true; |
d9b3de22 | 21722 | |
d9b3de22 DE |
21723 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
21724 | was a line entry for it so that the backend has a chance to adjust it | |
21725 | and also record it in case it needs it. This is currently used by MIPS | |
21726 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
21727 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
21728 | m_is_stmt = lh->default_is_stmt; | |
21729 | m_discriminator = 0; | |
1313c56e AB |
21730 | |
21731 | m_last_address = m_address; | |
21732 | m_stmt_at_address = false; | |
252a6764 DE |
21733 | } |
21734 | ||
6f77053d PA |
21735 | void |
21736 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
21737 | const gdb_byte *line_ptr, | |
7ab6656f | 21738 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 21739 | { |
a8caed5d FS |
21740 | /* Linkers resolve a symbolic relocation referencing a GC'd function to 0 or |
21741 | -1. If ADDRESS is 0, ignoring the opcode will err if the text section is | |
21742 | located at 0x0. In this case, additionally check that if | |
21743 | ADDRESS < UNRELOCATED_LOWPC. */ | |
924c2928 | 21744 | |
a8caed5d FS |
21745 | if ((address == 0 && address < unrelocated_lowpc) |
21746 | || address == (CORE_ADDR) -1) | |
924c2928 DE |
21747 | { |
21748 | /* This line table is for a function which has been | |
21749 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
21750 | ||
5e22e966 | 21751 | struct objfile *objfile = cu->per_objfile->objfile; |
924c2928 DE |
21752 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
21753 | ||
b98664d3 | 21754 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 21755 | line_offset, objfile_name (objfile)); |
804d2729 TT |
21756 | m_currently_recording_lines = false; |
21757 | /* Note: m_currently_recording_lines is left as false until we see | |
21758 | DW_LNE_end_sequence. */ | |
924c2928 DE |
21759 | } |
21760 | } | |
21761 | ||
f3f5162e | 21762 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
21763 | Process the line number information in LH. |
21764 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
21765 | program in order to set included_p for every referenced header. */ | |
debd256d | 21766 | |
c906108c | 21767 | static void |
43f3e411 DE |
21768 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
21769 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 21770 | { |
d521ce57 TT |
21771 | const gdb_byte *line_ptr, *extended_end; |
21772 | const gdb_byte *line_end; | |
a8c50c1f | 21773 | unsigned int bytes_read, extended_len; |
699ca60a | 21774 | unsigned char op_code, extended_op; |
e142c38c | 21775 | CORE_ADDR baseaddr; |
5e22e966 | 21776 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 21777 | bfd *abfd = objfile->obfd; |
08feed99 | 21778 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
21779 | /* True if we're recording line info (as opposed to building partial |
21780 | symtabs and just interested in finding include files mentioned by | |
21781 | the line number program). */ | |
21782 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 21783 | |
b3b3bada | 21784 | baseaddr = objfile->text_section_offset (); |
c906108c | 21785 | |
debd256d JB |
21786 | line_ptr = lh->statement_program_start; |
21787 | line_end = lh->statement_program_end; | |
c906108c SS |
21788 | |
21789 | /* Read the statement sequences until there's nothing left. */ | |
21790 | while (line_ptr < line_end) | |
21791 | { | |
6f77053d PA |
21792 | /* The DWARF line number program state machine. Reset the state |
21793 | machine at the start of each sequence. */ | |
804d2729 | 21794 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 21795 | bool end_sequence = false; |
d9b3de22 | 21796 | |
8c43009f | 21797 | if (record_lines_p) |
c906108c | 21798 | { |
8c43009f PA |
21799 | /* Start a subfile for the current file of the state |
21800 | machine. */ | |
21801 | const file_entry *fe = state_machine.current_file (); | |
21802 | ||
21803 | if (fe != NULL) | |
804d2729 | 21804 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
21805 | } |
21806 | ||
a738430d | 21807 | /* Decode the table. */ |
d9b3de22 | 21808 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
21809 | { |
21810 | op_code = read_1_byte (abfd, line_ptr); | |
21811 | line_ptr += 1; | |
9aa1fe7e | 21812 | |
debd256d | 21813 | if (op_code >= lh->opcode_base) |
6e70227d | 21814 | { |
8e07a239 | 21815 | /* Special opcode. */ |
6f77053d | 21816 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
21817 | } |
21818 | else switch (op_code) | |
c906108c SS |
21819 | { |
21820 | case DW_LNS_extended_op: | |
3e43a32a MS |
21821 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
21822 | &bytes_read); | |
473b7be6 | 21823 | line_ptr += bytes_read; |
a8c50c1f | 21824 | extended_end = line_ptr + extended_len; |
c906108c SS |
21825 | extended_op = read_1_byte (abfd, line_ptr); |
21826 | line_ptr += 1; | |
8f34b746 TV |
21827 | if (DW_LNE_lo_user <= extended_op |
21828 | && extended_op <= DW_LNE_hi_user) | |
21829 | { | |
21830 | /* Vendor extension, ignore. */ | |
21831 | line_ptr = extended_end; | |
21832 | break; | |
21833 | } | |
c906108c SS |
21834 | switch (extended_op) |
21835 | { | |
21836 | case DW_LNE_end_sequence: | |
6f77053d PA |
21837 | state_machine.handle_end_sequence (); |
21838 | end_sequence = true; | |
c906108c SS |
21839 | break; |
21840 | case DW_LNE_set_address: | |
d9b3de22 DE |
21841 | { |
21842 | CORE_ADDR address | |
c8a7a66f | 21843 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 21844 | line_ptr += bytes_read; |
6f77053d PA |
21845 | |
21846 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 21847 | lowpc - baseaddr, address); |
6f77053d | 21848 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 21849 | } |
c906108c SS |
21850 | break; |
21851 | case DW_LNE_define_file: | |
dda83cd7 SM |
21852 | { |
21853 | const char *cur_file; | |
ecfb656c PA |
21854 | unsigned int mod_time, length; |
21855 | dir_index dindex; | |
6e70227d | 21856 | |
dda83cd7 | 21857 | cur_file = read_direct_string (abfd, line_ptr, |
3e43a32a | 21858 | &bytes_read); |
dda83cd7 SM |
21859 | line_ptr += bytes_read; |
21860 | dindex = (dir_index) | |
21861 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21862 | line_ptr += bytes_read; | |
21863 | mod_time = | |
21864 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21865 | line_ptr += bytes_read; | |
21866 | length = | |
21867 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21868 | line_ptr += bytes_read; | |
21869 | lh->add_file_name (cur_file, dindex, mod_time, length); | |
21870 | } | |
c906108c | 21871 | break; |
d0c6ba3d | 21872 | case DW_LNE_set_discriminator: |
6f77053d PA |
21873 | { |
21874 | /* The discriminator is not interesting to the | |
21875 | debugger; just ignore it. We still need to | |
21876 | check its value though: | |
21877 | if there are consecutive entries for the same | |
21878 | (non-prologue) line we want to coalesce them. | |
21879 | PR 17276. */ | |
21880 | unsigned int discr | |
21881 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21882 | line_ptr += bytes_read; | |
21883 | ||
21884 | state_machine.handle_set_discriminator (discr); | |
21885 | } | |
d0c6ba3d | 21886 | break; |
c906108c | 21887 | default: |
b98664d3 | 21888 | complaint (_("mangled .debug_line section")); |
debd256d | 21889 | return; |
c906108c | 21890 | } |
a8c50c1f DJ |
21891 | /* Make sure that we parsed the extended op correctly. If e.g. |
21892 | we expected a different address size than the producer used, | |
21893 | we may have read the wrong number of bytes. */ | |
21894 | if (line_ptr != extended_end) | |
21895 | { | |
b98664d3 | 21896 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
21897 | return; |
21898 | } | |
c906108c SS |
21899 | break; |
21900 | case DW_LNS_copy: | |
6f77053d | 21901 | state_machine.handle_copy (); |
c906108c SS |
21902 | break; |
21903 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21904 | { |
21905 | CORE_ADDR adjust | |
21906 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21907 | line_ptr += bytes_read; |
6f77053d PA |
21908 | |
21909 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21910 | } |
c906108c SS |
21911 | break; |
21912 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21913 | { |
21914 | int line_delta | |
21915 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21916 | line_ptr += bytes_read; |
6f77053d PA |
21917 | |
21918 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21919 | } |
c906108c SS |
21920 | break; |
21921 | case DW_LNS_set_file: | |
d9b3de22 | 21922 | { |
6f77053d | 21923 | file_name_index file |
ecfb656c PA |
21924 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21925 | &bytes_read); | |
d9b3de22 | 21926 | line_ptr += bytes_read; |
8c43009f | 21927 | |
6f77053d | 21928 | state_machine.handle_set_file (file); |
d9b3de22 | 21929 | } |
c906108c SS |
21930 | break; |
21931 | case DW_LNS_set_column: | |
0ad93d4f | 21932 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21933 | line_ptr += bytes_read; |
21934 | break; | |
21935 | case DW_LNS_negate_stmt: | |
6f77053d | 21936 | state_machine.handle_negate_stmt (); |
c906108c SS |
21937 | break; |
21938 | case DW_LNS_set_basic_block: | |
c906108c | 21939 | break; |
c2c6d25f JM |
21940 | /* Add to the address register of the state machine the |
21941 | address increment value corresponding to special opcode | |
a738430d MK |
21942 | 255. I.e., this value is scaled by the minimum |
21943 | instruction length since special opcode 255 would have | |
b021a221 | 21944 | scaled the increment. */ |
c906108c | 21945 | case DW_LNS_const_add_pc: |
6f77053d | 21946 | state_machine.handle_const_add_pc (); |
c906108c SS |
21947 | break; |
21948 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21949 | { |
6f77053d | 21950 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21951 | line_ptr += 2; |
6f77053d PA |
21952 | |
21953 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21954 | } |
c906108c | 21955 | break; |
9aa1fe7e | 21956 | default: |
a738430d MK |
21957 | { |
21958 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21959 | int i; |
a738430d | 21960 | |
debd256d | 21961 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21962 | { |
21963 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21964 | line_ptr += bytes_read; | |
21965 | } | |
21966 | } | |
c906108c SS |
21967 | } |
21968 | } | |
d9b3de22 DE |
21969 | |
21970 | if (!end_sequence) | |
21971 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21972 | ||
21973 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21974 | in which case we still finish recording the last line). */ | |
6f77053d | 21975 | state_machine.record_line (true); |
c906108c | 21976 | } |
f3f5162e DE |
21977 | } |
21978 | ||
21979 | /* Decode the Line Number Program (LNP) for the given line_header | |
21980 | structure and CU. The actual information extracted and the type | |
21981 | of structures created from the LNP depends on the value of PST. | |
21982 | ||
21983 | 1. If PST is NULL, then this procedure uses the data from the program | |
21984 | to create all necessary symbol tables, and their linetables. | |
21985 | ||
21986 | 2. If PST is not NULL, this procedure reads the program to determine | |
21987 | the list of files included by the unit represented by PST, and | |
21988 | builds all the associated partial symbol tables. | |
21989 | ||
21990 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21991 | It is used for relative paths in the line table. | |
21992 | NOTE: When processing partial symtabs (pst != NULL), | |
21993 | comp_dir == pst->dirname. | |
21994 | ||
21995 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21996 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21997 | symtab we don't use it in the name of the psymtabs we create. | |
21998 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21999 | A good testcase for this is mb-inline.exp. |
22000 | ||
527f3840 JK |
22001 | LOWPC is the lowest address in CU (or 0 if not known). |
22002 | ||
22003 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
22004 | for its PC<->lines mapping information. Otherwise only the filename | |
22005 | table is read in. */ | |
f3f5162e DE |
22006 | |
22007 | static void | |
22008 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 22009 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 22010 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 22011 | { |
5e22e966 | 22012 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 22013 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 22014 | |
527f3840 JK |
22015 | if (decode_mapping) |
22016 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
22017 | |
22018 | if (decode_for_pst_p) | |
22019 | { | |
aaa75496 | 22020 | /* Now that we're done scanning the Line Header Program, we can |
dda83cd7 | 22021 | create the psymtab of each included file. */ |
7ba99d21 | 22022 | for (auto &file_entry : lh->file_names ()) |
dda83cd7 SM |
22023 | if (file_entry.included_p == 1) |
22024 | { | |
c89b44cd | 22025 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 22026 | const char *include_name = |
7ba99d21 AT |
22027 | psymtab_include_file_name (lh, file_entry, pst, |
22028 | comp_dir, &name_holder); | |
c6da4cef | 22029 | if (include_name != NULL) |
7b249e47 TT |
22030 | dwarf2_create_include_psymtab |
22031 | (cu->per_objfile->per_bfd, include_name, pst, | |
22032 | cu->per_objfile->per_bfd->partial_symtabs.get (), | |
22033 | objfile); | |
dda83cd7 | 22034 | } |
aaa75496 | 22035 | } |
cb1df416 DJ |
22036 | else |
22037 | { | |
22038 | /* Make sure a symtab is created for every file, even files | |
22039 | which contain only variables (i.e. no code with associated | |
22040 | line numbers). */ | |
c24bdb02 KS |
22041 | buildsym_compunit *builder = cu->get_builder (); |
22042 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 22043 | |
7ba99d21 | 22044 | for (auto &fe : lh->file_names ()) |
cb1df416 | 22045 | { |
804d2729 | 22046 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 22047 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 22048 | { |
c24bdb02 | 22049 | builder->get_current_subfile ()->symtab |
804d2729 | 22050 | = allocate_symtab (cust, |
c24bdb02 | 22051 | builder->get_current_subfile ()->name); |
43f3e411 | 22052 | } |
c24bdb02 | 22053 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
22054 | } |
22055 | } | |
c906108c SS |
22056 | } |
22057 | ||
22058 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
22059 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 22060 | or NULL if not known. |
c906108c SS |
22061 | This routine tries to keep line numbers from identical absolute and |
22062 | relative file names in a common subfile. | |
22063 | ||
22064 | Using the `list' example from the GDB testsuite, which resides in | |
22065 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
22066 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
22067 | ||
c5aa993b | 22068 | DW_AT_name: /srcdir/list0.c |
4d663531 | 22069 | DW_AT_comp_dir: /compdir |
357e46e7 | 22070 | files.files[0].name: list0.h |
c5aa993b | 22071 | files.files[0].dir: /srcdir |
357e46e7 | 22072 | files.files[1].name: list0.c |
c5aa993b | 22073 | files.files[1].dir: /srcdir |
c906108c SS |
22074 | |
22075 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
22076 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
22077 | start_subfile will ensure that this happens provided that we pass the | |
22078 | concatenation of files.files[1].dir and files.files[1].name as the | |
22079 | subfile's name. */ | |
c906108c SS |
22080 | |
22081 | static void | |
804d2729 TT |
22082 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
22083 | const char *dirname) | |
c906108c | 22084 | { |
43816ebc | 22085 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 22086 | |
4d663531 | 22087 | /* In order not to lose the line information directory, |
4f1520fb FR |
22088 | we concatenate it to the filename when it makes sense. |
22089 | Note that the Dwarf3 standard says (speaking of filenames in line | |
22090 | information): ``The directory index is ignored for file names | |
22091 | that represent full path names''. Thus ignoring dirname in the | |
22092 | `else' branch below isn't an issue. */ | |
c906108c | 22093 | |
d5166ae1 | 22094 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 22095 | { |
43816ebc TT |
22096 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
22097 | filename = copy.get (); | |
d521ce57 | 22098 | } |
c906108c | 22099 | |
c24bdb02 | 22100 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
22101 | } |
22102 | ||
804d2729 TT |
22103 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
22104 | buildsym_compunit constructor. */ | |
f4dc4d17 | 22105 | |
c24bdb02 KS |
22106 | struct compunit_symtab * |
22107 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
22108 | CORE_ADDR low_pc) | |
f4dc4d17 | 22109 | { |
c24bdb02 | 22110 | gdb_assert (m_builder == nullptr); |
43f3e411 | 22111 | |
c24bdb02 | 22112 | m_builder.reset (new struct buildsym_compunit |
f6e649dd | 22113 | (this->per_objfile->objfile, |
c24bdb02 | 22114 | name, comp_dir, language, low_pc)); |
93b8bea4 | 22115 | |
c24bdb02 | 22116 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 22117 | |
c24bdb02 KS |
22118 | get_builder ()->record_debugformat ("DWARF 2"); |
22119 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 22120 | |
c24bdb02 | 22121 | processing_has_namespace_info = false; |
43f3e411 | 22122 | |
c24bdb02 | 22123 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
22124 | } |
22125 | ||
4c2df51b DJ |
22126 | static void |
22127 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 22128 | struct dwarf2_cu *cu) |
4c2df51b | 22129 | { |
5e22e966 | 22130 | struct objfile *objfile = cu->per_objfile->objfile; |
e7c27a73 DJ |
22131 | struct comp_unit_head *cu_header = &cu->header; |
22132 | ||
4c2df51b DJ |
22133 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
22134 | code here to turn a symbol with DW_AT_external and a | |
22135 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
22136 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
22137 | with some versions of binutils) where shared libraries could have | |
22138 | relocations against symbols in their debug information - the | |
22139 | minimal symbol would have the right address, but the debug info | |
22140 | would not. It's no longer necessary, because we will explicitly | |
22141 | apply relocations when we read in the debug information now. */ | |
22142 | ||
22143 | /* A DW_AT_location attribute with no contents indicates that a | |
22144 | variable has been optimized away. */ | |
9d2246fc | 22145 | if (attr->form_is_block () && attr->as_block ()->size == 0) |
4c2df51b | 22146 | { |
f1e6e072 | 22147 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
22148 | return; |
22149 | } | |
22150 | ||
22151 | /* Handle one degenerate form of location expression specially, to | |
22152 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
22153 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
22154 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 22155 | |
9d2246fc TT |
22156 | if (attr->form_is_block ()) |
22157 | { | |
22158 | struct dwarf_block *block = attr->as_block (); | |
22159 | ||
22160 | if ((block->data[0] == DW_OP_addr | |
22161 | && block->size == 1 + cu_header->addr_size) | |
22162 | || ((block->data[0] == DW_OP_GNU_addr_index | |
dda83cd7 | 22163 | || block->data[0] == DW_OP_addrx) |
9d2246fc TT |
22164 | && (block->size |
22165 | == 1 + leb128_size (&block->data[1])))) | |
22166 | { | |
22167 | unsigned int dummy; | |
22168 | ||
22169 | if (block->data[0] == DW_OP_addr) | |
22170 | SET_SYMBOL_VALUE_ADDRESS | |
22171 | (sym, cu->header.read_address (objfile->obfd, | |
22172 | block->data + 1, | |
38583298 | 22173 | &dummy)); |
9d2246fc TT |
22174 | else |
22175 | SET_SYMBOL_VALUE_ADDRESS | |
22176 | (sym, read_addr_index_from_leb128 (cu, block->data + 1, | |
22177 | &dummy)); | |
22178 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; | |
22179 | fixup_symbol_section (sym, objfile); | |
22180 | SET_SYMBOL_VALUE_ADDRESS | |
22181 | (sym, | |
22182 | SYMBOL_VALUE_ADDRESS (sym) | |
a52d653e | 22183 | + objfile->section_offsets[sym->section_index ()]); |
9d2246fc TT |
22184 | return; |
22185 | } | |
4c2df51b DJ |
22186 | } |
22187 | ||
22188 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
22189 | expression evaluator, and use LOC_COMPUTED only when necessary | |
22190 | (i.e. when the value of a register or memory location is | |
22191 | referenced, or a thread-local block, etc.). Then again, it might | |
22192 | not be worthwhile. I'm assuming that it isn't unless performance | |
22193 | or memory numbers show me otherwise. */ | |
22194 | ||
f1e6e072 | 22195 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 22196 | |
f1e6e072 | 22197 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 22198 | cu->has_loclist = true; |
4c2df51b DJ |
22199 | } |
22200 | ||
c906108c SS |
22201 | /* Given a pointer to a DWARF information entry, figure out if we need |
22202 | to make a symbol table entry for it, and if so, create a new entry | |
22203 | and return a pointer to it. | |
22204 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
22205 | used the passed type. |
22206 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
22207 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
22208 | |
22209 | static struct symbol * | |
5e2db402 TT |
22210 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
22211 | struct symbol *space) | |
c906108c | 22212 | { |
976ca316 SM |
22213 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22214 | struct objfile *objfile = per_objfile->objfile; | |
08feed99 | 22215 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 22216 | struct symbol *sym = NULL; |
15d034d0 | 22217 | const char *name; |
c906108c SS |
22218 | struct attribute *attr = NULL; |
22219 | struct attribute *attr2 = NULL; | |
e142c38c | 22220 | CORE_ADDR baseaddr; |
e37fd15a SW |
22221 | struct pending **list_to_add = NULL; |
22222 | ||
edb3359d | 22223 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 22224 | |
b3b3bada | 22225 | baseaddr = objfile->text_section_offset (); |
c906108c | 22226 | |
94af9270 | 22227 | name = dwarf2_name (die, cu); |
c906108c SS |
22228 | if (name) |
22229 | { | |
34eaf542 | 22230 | int suppress_add = 0; |
94af9270 | 22231 | |
34eaf542 TT |
22232 | if (space) |
22233 | sym = space; | |
22234 | else | |
8c14c3a3 | 22235 | sym = new (&objfile->objfile_obstack) symbol; |
c906108c | 22236 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
22237 | |
22238 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 22239 | sym->set_language (cu->language, &objfile->objfile_obstack); |
f55ee35c JK |
22240 | /* Fortran does not have mangling standard and the mangling does differ |
22241 | between gfortran, iFort etc. */ | |
bcfe6157 TT |
22242 | const char *physname |
22243 | = (cu->language == language_fortran | |
22244 | ? dwarf2_full_name (name, die, cu) | |
22245 | : dwarf2_physname (name, die, cu)); | |
22246 | const char *linkagename = dw2_linkage_name (die, cu); | |
22247 | ||
22248 | if (linkagename == nullptr || cu->language == language_ada) | |
22249 | sym->set_linkage_name (physname); | |
22250 | else | |
22251 | { | |
22252 | sym->set_demangled_name (physname, &objfile->objfile_obstack); | |
22253 | sym->set_linkage_name (linkagename); | |
22254 | } | |
f55ee35c | 22255 | |
c906108c | 22256 | /* Default assumptions. |
dda83cd7 | 22257 | Use the passed type or decode it from the die. */ |
176620f1 | 22258 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 22259 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
22260 | if (type != NULL) |
22261 | SYMBOL_TYPE (sym) = type; | |
22262 | else | |
e7c27a73 | 22263 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
22264 | attr = dwarf2_attr (die, |
22265 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
22266 | cu); | |
435d3d88 | 22267 | if (attr != nullptr) |
529908cb | 22268 | SYMBOL_LINE (sym) = attr->constant_value (0); |
cb1df416 | 22269 | |
edb3359d DJ |
22270 | attr = dwarf2_attr (die, |
22271 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
22272 | cu); | |
aa659cfa | 22273 | if (attr != nullptr && attr->is_nonnegative ()) |
cb1df416 | 22274 | { |
529908cb | 22275 | file_name_index file_index |
aa659cfa | 22276 | = (file_name_index) attr->as_nonnegative (); |
8c43009f | 22277 | struct file_entry *fe; |
9a619af0 | 22278 | |
ecfb656c PA |
22279 | if (cu->line_header != NULL) |
22280 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
22281 | else |
22282 | fe = NULL; | |
22283 | ||
22284 | if (fe == NULL) | |
b98664d3 | 22285 | complaint (_("file index out of range")); |
8c43009f PA |
22286 | else |
22287 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
22288 | } |
22289 | ||
c906108c SS |
22290 | switch (die->tag) |
22291 | { | |
22292 | case DW_TAG_label: | |
e142c38c | 22293 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 22294 | if (attr != nullptr) |
3e29f34a MR |
22295 | { |
22296 | CORE_ADDR addr; | |
22297 | ||
95f982e5 | 22298 | addr = attr->as_address (); |
3e29f34a | 22299 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 22300 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
8f5c6526 | 22301 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
3e29f34a | 22302 | } |
8f5c6526 TV |
22303 | else |
22304 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; | |
0f5238ed TT |
22305 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
22306 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
d3cb6808 | 22307 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
22308 | break; |
22309 | case DW_TAG_subprogram: | |
22310 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
22311 | finish_block. */ | |
f1e6e072 | 22312 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 22313 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c45bc3f8 | 22314 | if ((attr2 != nullptr && attr2->as_boolean ()) |
0a4b0913 AB |
22315 | || cu->language == language_ada |
22316 | || cu->language == language_fortran) | |
c906108c | 22317 | { |
dda83cd7 SM |
22318 | /* Subprograms marked external are stored as a global symbol. |
22319 | Ada and Fortran subprograms, whether marked external or | |
22320 | not, are always stored as a global symbol, because we want | |
22321 | to be able to access them globally. For instance, we want | |
22322 | to be able to break on a nested subprogram without having | |
22323 | to specify the context. */ | |
c24bdb02 | 22324 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
22325 | } |
22326 | else | |
22327 | { | |
e37fd15a | 22328 | list_to_add = cu->list_in_scope; |
c906108c SS |
22329 | } |
22330 | break; | |
edb3359d DJ |
22331 | case DW_TAG_inlined_subroutine: |
22332 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
22333 | finish_block. */ | |
f1e6e072 | 22334 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 22335 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 22336 | list_to_add = cu->list_in_scope; |
edb3359d | 22337 | break; |
34eaf542 TT |
22338 | case DW_TAG_template_value_param: |
22339 | suppress_add = 1; | |
22340 | /* Fall through. */ | |
72929c62 | 22341 | case DW_TAG_constant: |
c906108c | 22342 | case DW_TAG_variable: |
254e6b9e | 22343 | case DW_TAG_member: |
0963b4bd MS |
22344 | /* Compilation with minimal debug info may result in |
22345 | variables with missing type entries. Change the | |
22346 | misleading `void' type to something sensible. */ | |
78134374 | 22347 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_VOID) |
46a4882b | 22348 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 22349 | |
e142c38c | 22350 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
22351 | /* In the case of DW_TAG_member, we should only be called for |
22352 | static const members. */ | |
22353 | if (die->tag == DW_TAG_member) | |
22354 | { | |
3863f96c DE |
22355 | /* dwarf2_add_field uses die_is_declaration, |
22356 | so we do the same. */ | |
254e6b9e DE |
22357 | gdb_assert (die_is_declaration (die, cu)); |
22358 | gdb_assert (attr); | |
22359 | } | |
435d3d88 | 22360 | if (attr != nullptr) |
c906108c | 22361 | { |
e7c27a73 | 22362 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 22363 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 22364 | if (!suppress_add) |
34eaf542 | 22365 | { |
c45bc3f8 | 22366 | if (attr2 != nullptr && attr2->as_boolean ()) |
c24bdb02 | 22367 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 22368 | else |
e37fd15a | 22369 | list_to_add = cu->list_in_scope; |
34eaf542 | 22370 | } |
c906108c SS |
22371 | break; |
22372 | } | |
e142c38c | 22373 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 22374 | if (attr != nullptr) |
c906108c | 22375 | { |
e7c27a73 | 22376 | var_decode_location (attr, sym, cu); |
e142c38c | 22377 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
22378 | |
22379 | /* Fortran explicitly imports any global symbols to the local | |
22380 | scope by DW_TAG_common_block. */ | |
22381 | if (cu->language == language_fortran && die->parent | |
22382 | && die->parent->tag == DW_TAG_common_block) | |
22383 | attr2 = NULL; | |
22384 | ||
caac4577 JG |
22385 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
22386 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
976ca316 | 22387 | && !per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
22388 | { |
22389 | /* When a static variable is eliminated by the linker, | |
22390 | the corresponding debug information is not stripped | |
22391 | out, but the variable address is set to null; | |
22392 | do not add such variables into symbol table. */ | |
22393 | } | |
c45bc3f8 | 22394 | else if (attr2 != nullptr && attr2->as_boolean ()) |
1c809c68 | 22395 | { |
4b610737 TT |
22396 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
22397 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
976ca316 | 22398 | && per_objfile->per_bfd->can_copy) |
4b610737 TT |
22399 | { |
22400 | /* A global static variable might be subject to | |
22401 | copy relocation. We first check for a local | |
22402 | minsym, though, because maybe the symbol was | |
22403 | marked hidden, in which case this would not | |
22404 | apply. */ | |
22405 | bound_minimal_symbol found | |
22406 | = (lookup_minimal_symbol_linkage | |
987012b8 | 22407 | (sym->linkage_name (), objfile)); |
4b610737 TT |
22408 | if (found.minsym != nullptr) |
22409 | sym->maybe_copied = 1; | |
22410 | } | |
f55ee35c | 22411 | |
1c809c68 TT |
22412 | /* A variable with DW_AT_external is never static, |
22413 | but it may be block-scoped. */ | |
804d2729 | 22414 | list_to_add |
c24bdb02 KS |
22415 | = ((cu->list_in_scope |
22416 | == cu->get_builder ()->get_file_symbols ()) | |
22417 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22418 | : cu->list_in_scope); |
1c809c68 | 22419 | } |
c906108c | 22420 | else |
e37fd15a | 22421 | list_to_add = cu->list_in_scope; |
c906108c SS |
22422 | } |
22423 | else | |
22424 | { | |
22425 | /* We do not know the address of this symbol. | |
dda83cd7 SM |
22426 | If it is an external symbol and we have type information |
22427 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
22428 | The address of the variable will then be determined from | |
22429 | the minimal symbol table whenever the variable is | |
22430 | referenced. */ | |
e142c38c | 22431 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
22432 | |
22433 | /* Fortran explicitly imports any global symbols to the local | |
22434 | scope by DW_TAG_common_block. */ | |
22435 | if (cu->language == language_fortran && die->parent | |
22436 | && die->parent->tag == DW_TAG_common_block) | |
22437 | { | |
22438 | /* SYMBOL_CLASS doesn't matter here because | |
22439 | read_common_block is going to reset it. */ | |
22440 | if (!suppress_add) | |
22441 | list_to_add = cu->list_in_scope; | |
22442 | } | |
c45bc3f8 | 22443 | else if (attr2 != nullptr && attr2->as_boolean () |
0971de02 | 22444 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 22445 | { |
0fe7935b DJ |
22446 | /* A variable with DW_AT_external is never static, but it |
22447 | may be block-scoped. */ | |
804d2729 | 22448 | list_to_add |
c24bdb02 KS |
22449 | = ((cu->list_in_scope |
22450 | == cu->get_builder ()->get_file_symbols ()) | |
22451 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 22452 | : cu->list_in_scope); |
0fe7935b | 22453 | |
f1e6e072 | 22454 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 22455 | } |
442ddf59 JK |
22456 | else if (!die_is_declaration (die, cu)) |
22457 | { | |
22458 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
22459 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
22460 | if (!suppress_add) |
22461 | list_to_add = cu->list_in_scope; | |
442ddf59 | 22462 | } |
c906108c SS |
22463 | } |
22464 | break; | |
22465 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
22466 | { |
22467 | /* If we are inside a function, mark this as an argument. If | |
22468 | not, we might be looking at an argument to an inlined function | |
22469 | when we do not have enough information to show inlined frames; | |
22470 | pretend it's a local variable in that case so that the user can | |
22471 | still see it. */ | |
804d2729 | 22472 | struct context_stack *curr |
c24bdb02 | 22473 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
22474 | if (curr != nullptr && curr->name != nullptr) |
22475 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
22476 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 22477 | if (attr != nullptr) |
a60f3166 TT |
22478 | { |
22479 | var_decode_location (attr, sym, cu); | |
22480 | } | |
22481 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 22482 | if (attr != nullptr) |
a60f3166 TT |
22483 | { |
22484 | dwarf2_const_value (attr, sym, cu); | |
22485 | } | |
f346a30d | 22486 | |
a60f3166 TT |
22487 | list_to_add = cu->list_in_scope; |
22488 | } | |
c906108c SS |
22489 | break; |
22490 | case DW_TAG_unspecified_parameters: | |
22491 | /* From varargs functions; gdb doesn't seem to have any | |
22492 | interest in this information, so just ignore it for now. | |
22493 | (FIXME?) */ | |
22494 | break; | |
34eaf542 TT |
22495 | case DW_TAG_template_type_param: |
22496 | suppress_add = 1; | |
22497 | /* Fall through. */ | |
c906108c | 22498 | case DW_TAG_class_type: |
680b30c7 | 22499 | case DW_TAG_interface_type: |
c906108c SS |
22500 | case DW_TAG_structure_type: |
22501 | case DW_TAG_union_type: | |
72019c9c | 22502 | case DW_TAG_set_type: |
c906108c | 22503 | case DW_TAG_enumeration_type: |
f1e6e072 | 22504 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22505 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 22506 | |
63d06c5c | 22507 | { |
9c37b5ae | 22508 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
22509 | really ever be static objects: otherwise, if you try |
22510 | to, say, break of a class's method and you're in a file | |
22511 | which doesn't mention that class, it won't work unless | |
22512 | the check for all static symbols in lookup_symbol_aux | |
22513 | saves you. See the OtherFileClass tests in | |
22514 | gdb.c++/namespace.exp. */ | |
22515 | ||
e37fd15a | 22516 | if (!suppress_add) |
34eaf542 | 22517 | { |
c24bdb02 | 22518 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 22519 | list_to_add |
c24bdb02 | 22520 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 22521 | && cu->language == language_cplus |
c24bdb02 | 22522 | ? builder->get_global_symbols () |
804d2729 | 22523 | : cu->list_in_scope); |
63d06c5c | 22524 | |
64382290 | 22525 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 22526 | ... }" also defines a typedef for "foo". */ |
64382290 | 22527 | if (cu->language == language_cplus |
45280282 | 22528 | || cu->language == language_ada |
c44af4eb TT |
22529 | || cu->language == language_d |
22530 | || cu->language == language_rust) | |
64382290 TT |
22531 | { |
22532 | /* The symbol's name is already allocated along | |
22533 | with this objfile, so we don't need to | |
22534 | duplicate it for the type. */ | |
7d93a1e0 | 22535 | if (SYMBOL_TYPE (sym)->name () == 0) |
d0e39ea2 | 22536 | SYMBOL_TYPE (sym)->set_name (sym->search_name ()); |
64382290 | 22537 | } |
63d06c5c DC |
22538 | } |
22539 | } | |
c906108c SS |
22540 | break; |
22541 | case DW_TAG_typedef: | |
f1e6e072 | 22542 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 22543 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22544 | list_to_add = cu->list_in_scope; |
63d06c5c | 22545 | break; |
d8f62e84 | 22546 | case DW_TAG_array_type: |
c906108c | 22547 | case DW_TAG_base_type: |
dda83cd7 | 22548 | case DW_TAG_subrange_type: |
f1e6e072 | 22549 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 22550 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 22551 | list_to_add = cu->list_in_scope; |
c906108c SS |
22552 | break; |
22553 | case DW_TAG_enumerator: | |
e142c38c | 22554 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 22555 | if (attr != nullptr) |
c906108c | 22556 | { |
e7c27a73 | 22557 | dwarf2_const_value (attr, sym, cu); |
c906108c | 22558 | } |
63d06c5c DC |
22559 | { |
22560 | /* NOTE: carlton/2003-11-10: See comment above in the | |
22561 | DW_TAG_class_type, etc. block. */ | |
22562 | ||
804d2729 | 22563 | list_to_add |
c24bdb02 | 22564 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 22565 | && cu->language == language_cplus |
c24bdb02 | 22566 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 22567 | : cu->list_in_scope); |
63d06c5c | 22568 | } |
c906108c | 22569 | break; |
74921315 | 22570 | case DW_TAG_imported_declaration: |
5c4e30ca | 22571 | case DW_TAG_namespace: |
f1e6e072 | 22572 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 22573 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 22574 | break; |
530e8392 KB |
22575 | case DW_TAG_module: |
22576 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
22577 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 22578 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 22579 | break; |
4357ac6c | 22580 | case DW_TAG_common_block: |
f1e6e072 | 22581 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 22582 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 22583 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 22584 | break; |
c906108c SS |
22585 | default: |
22586 | /* Not a tag we recognize. Hopefully we aren't processing | |
22587 | trash data, but since we must specifically ignore things | |
22588 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 22589 | this point. */ |
b98664d3 | 22590 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 22591 | dwarf_tag_name (die->tag)); |
c906108c SS |
22592 | break; |
22593 | } | |
df8a16a1 | 22594 | |
e37fd15a SW |
22595 | if (suppress_add) |
22596 | { | |
22597 | sym->hash_next = objfile->template_symbols; | |
22598 | objfile->template_symbols = sym; | |
22599 | list_to_add = NULL; | |
22600 | } | |
22601 | ||
22602 | if (list_to_add != NULL) | |
d3cb6808 | 22603 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 22604 | |
df8a16a1 DJ |
22605 | /* For the benefit of old versions of GCC, check for anonymous |
22606 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 22607 | if (!cu->processing_has_namespace_info |
94af9270 | 22608 | && cu->language == language_cplus) |
c24bdb02 | 22609 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
22610 | } |
22611 | return (sym); | |
22612 | } | |
22613 | ||
98bfdba5 PA |
22614 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
22615 | zero-extend it as appropriate for the symbol's type. The DWARF | |
22616 | standard (v4) is not entirely clear about the meaning of using | |
22617 | DW_FORM_dataN for a constant with a signed type, where the type is | |
22618 | wider than the data. The conclusion of a discussion on the DWARF | |
22619 | list was that this is unspecified. We choose to always zero-extend | |
22620 | because that is the interpretation long in use by GCC. */ | |
c906108c | 22621 | |
98bfdba5 | 22622 | static gdb_byte * |
ff39bb5e | 22623 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 22624 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 22625 | { |
5e22e966 | 22626 | struct objfile *objfile = cu->per_objfile->objfile; |
e17a4113 UW |
22627 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
22628 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
529908cb | 22629 | LONGEST l = attr->constant_value (0); |
98bfdba5 PA |
22630 | |
22631 | if (bits < sizeof (*value) * 8) | |
22632 | { | |
22633 | l &= ((LONGEST) 1 << bits) - 1; | |
22634 | *value = l; | |
22635 | } | |
22636 | else if (bits == sizeof (*value) * 8) | |
22637 | *value = l; | |
22638 | else | |
22639 | { | |
224c3ddb | 22640 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
22641 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
22642 | return bytes; | |
22643 | } | |
22644 | ||
22645 | return NULL; | |
22646 | } | |
22647 | ||
22648 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
22649 | the value does not fit in *VALUE, set *BYTES - either already | |
22650 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
22651 | or, set *BATON, if we translated the constant to a location | |
22652 | expression. */ | |
22653 | ||
22654 | static void | |
ff39bb5e | 22655 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
22656 | const char *name, struct obstack *obstack, |
22657 | struct dwarf2_cu *cu, | |
d521ce57 | 22658 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
22659 | struct dwarf2_locexpr_baton **baton) |
22660 | { | |
5e22e966 | 22661 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 22662 | struct objfile *objfile = per_objfile->objfile; |
98bfdba5 | 22663 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 22664 | struct dwarf_block *blk; |
98bfdba5 PA |
22665 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
22666 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
22667 | ||
22668 | *value = 0; | |
22669 | *bytes = NULL; | |
22670 | *baton = NULL; | |
c906108c SS |
22671 | |
22672 | switch (attr->form) | |
22673 | { | |
22674 | case DW_FORM_addr: | |
336d760d | 22675 | case DW_FORM_addrx: |
3019eac3 | 22676 | case DW_FORM_GNU_addr_index: |
ac56253d | 22677 | { |
ac56253d TT |
22678 | gdb_byte *data; |
22679 | ||
98bfdba5 PA |
22680 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
22681 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 22682 | cu_header->addr_size, |
98bfdba5 | 22683 | TYPE_LENGTH (type)); |
ac56253d TT |
22684 | /* Symbols of this form are reasonably rare, so we just |
22685 | piggyback on the existing location code rather than writing | |
22686 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 22687 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
a50264ba | 22688 | (*baton)->per_objfile = per_objfile; |
98bfdba5 PA |
22689 | (*baton)->per_cu = cu->per_cu; |
22690 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 22691 | |
98bfdba5 | 22692 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 22693 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 22694 | (*baton)->data = data; |
ac56253d TT |
22695 | |
22696 | data[0] = DW_OP_addr; | |
22697 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
36d378cf | 22698 | byte_order, attr->as_address ()); |
ac56253d | 22699 | data[cu_header->addr_size + 1] = DW_OP_stack_value; |
ac56253d | 22700 | } |
c906108c | 22701 | break; |
4ac36638 | 22702 | case DW_FORM_string: |
93b5768b | 22703 | case DW_FORM_strp: |
cf532bd1 | 22704 | case DW_FORM_strx: |
3019eac3 | 22705 | case DW_FORM_GNU_str_index: |
36586728 | 22706 | case DW_FORM_GNU_strp_alt: |
c6481205 | 22707 | /* The string is already allocated on the objfile obstack, point |
98bfdba5 | 22708 | directly to it. */ |
2c830f54 | 22709 | *bytes = (const gdb_byte *) attr->as_string (); |
93b5768b | 22710 | break; |
c906108c SS |
22711 | case DW_FORM_block1: |
22712 | case DW_FORM_block2: | |
22713 | case DW_FORM_block4: | |
22714 | case DW_FORM_block: | |
2dc7f7b3 | 22715 | case DW_FORM_exprloc: |
0224619f | 22716 | case DW_FORM_data16: |
9d2246fc | 22717 | blk = attr->as_block (); |
98bfdba5 PA |
22718 | if (TYPE_LENGTH (type) != blk->size) |
22719 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
22720 | TYPE_LENGTH (type)); | |
22721 | *bytes = blk->data; | |
c906108c | 22722 | break; |
2df3850c JM |
22723 | |
22724 | /* The DW_AT_const_value attributes are supposed to carry the | |
22725 | symbol's value "represented as it would be on the target | |
22726 | architecture." By the time we get here, it's already been | |
22727 | converted to host endianness, so we just need to sign- or | |
22728 | zero-extend it as appropriate. */ | |
22729 | case DW_FORM_data1: | |
3aef2284 | 22730 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 22731 | break; |
c906108c | 22732 | case DW_FORM_data2: |
3aef2284 | 22733 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 22734 | break; |
c906108c | 22735 | case DW_FORM_data4: |
3aef2284 | 22736 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 22737 | break; |
c906108c | 22738 | case DW_FORM_data8: |
3aef2284 | 22739 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
22740 | break; |
22741 | ||
c906108c | 22742 | case DW_FORM_sdata: |
663c44ac | 22743 | case DW_FORM_implicit_const: |
1bc397c5 | 22744 | *value = attr->as_signed (); |
2df3850c JM |
22745 | break; |
22746 | ||
c906108c | 22747 | case DW_FORM_udata: |
529908cb | 22748 | *value = attr->as_unsigned (); |
c906108c | 22749 | break; |
2df3850c | 22750 | |
c906108c | 22751 | default: |
b98664d3 | 22752 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 22753 | dwarf_form_name (attr->form)); |
98bfdba5 | 22754 | *value = 0; |
c906108c SS |
22755 | break; |
22756 | } | |
22757 | } | |
22758 | ||
2df3850c | 22759 | |
98bfdba5 PA |
22760 | /* Copy constant value from an attribute to a symbol. */ |
22761 | ||
2df3850c | 22762 | static void |
ff39bb5e | 22763 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 22764 | struct dwarf2_cu *cu) |
2df3850c | 22765 | { |
5e22e966 | 22766 | struct objfile *objfile = cu->per_objfile->objfile; |
12df843f | 22767 | LONGEST value; |
d521ce57 | 22768 | const gdb_byte *bytes; |
98bfdba5 | 22769 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 22770 | |
98bfdba5 | 22771 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 22772 | sym->print_name (), |
98bfdba5 PA |
22773 | &objfile->objfile_obstack, cu, |
22774 | &value, &bytes, &baton); | |
2df3850c | 22775 | |
98bfdba5 PA |
22776 | if (baton != NULL) |
22777 | { | |
98bfdba5 | 22778 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 22779 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
22780 | } |
22781 | else if (bytes != NULL) | |
22782 | { | |
22783 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 22784 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
22785 | } |
22786 | else | |
22787 | { | |
22788 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 22789 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 22790 | } |
2df3850c JM |
22791 | } |
22792 | ||
c906108c SS |
22793 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
22794 | ||
22795 | static struct type * | |
e7c27a73 | 22796 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22797 | { |
c906108c | 22798 | struct attribute *type_attr; |
c906108c | 22799 | |
e142c38c | 22800 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
22801 | if (!type_attr) |
22802 | { | |
5e22e966 | 22803 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22804 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 22805 | return objfile_type (objfile)->builtin_void; |
c906108c | 22806 | } |
348e048f | 22807 | |
673bfd45 | 22808 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22809 | } |
22810 | ||
b4ba55a1 JB |
22811 | /* True iff CU's producer generates GNAT Ada auxiliary information |
22812 | that allows to find parallel types through that information instead | |
22813 | of having to do expensive parallel lookups by type name. */ | |
22814 | ||
22815 | static int | |
22816 | need_gnat_info (struct dwarf2_cu *cu) | |
22817 | { | |
de4cb04a JB |
22818 | /* Assume that the Ada compiler was GNAT, which always produces |
22819 | the auxiliary information. */ | |
22820 | return (cu->language == language_ada); | |
b4ba55a1 JB |
22821 | } |
22822 | ||
b4ba55a1 JB |
22823 | /* Return the auxiliary type of the die in question using its |
22824 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
22825 | attribute is not present. */ | |
22826 | ||
22827 | static struct type * | |
22828 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
22829 | { | |
b4ba55a1 | 22830 | struct attribute *type_attr; |
b4ba55a1 JB |
22831 | |
22832 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
22833 | if (!type_attr) | |
22834 | return NULL; | |
22835 | ||
673bfd45 | 22836 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
22837 | } |
22838 | ||
22839 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
22840 | descriptive type accordingly. */ | |
22841 | ||
22842 | static void | |
22843 | set_descriptive_type (struct type *type, struct die_info *die, | |
22844 | struct dwarf2_cu *cu) | |
22845 | { | |
22846 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
22847 | ||
22848 | if (descriptive_type) | |
22849 | { | |
22850 | ALLOCATE_GNAT_AUX_TYPE (type); | |
22851 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
22852 | } | |
22853 | } | |
22854 | ||
c906108c SS |
22855 | /* Return the containing type of the die in question using its |
22856 | DW_AT_containing_type attribute. */ | |
22857 | ||
22858 | static struct type * | |
e7c27a73 | 22859 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22860 | { |
c906108c | 22861 | struct attribute *type_attr; |
5e22e966 | 22862 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 22863 | |
e142c38c | 22864 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
22865 | if (!type_attr) |
22866 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 22867 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 22868 | |
673bfd45 | 22869 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22870 | } |
22871 | ||
ac9ec31b DE |
22872 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
22873 | ||
22874 | static struct type * | |
22875 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
22876 | { | |
976ca316 SM |
22877 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22878 | struct objfile *objfile = per_objfile->objfile; | |
528e1572 | 22879 | char *saved; |
ac9ec31b | 22880 | |
528e1572 SM |
22881 | std::string message |
22882 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
22883 | objfile_name (objfile), | |
22884 | sect_offset_str (cu->header.sect_off), | |
22885 | sect_offset_str (die->sect_off)); | |
efba19b0 | 22886 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 22887 | |
19f392bc | 22888 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22889 | } |
22890 | ||
673bfd45 | 22891 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22892 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22893 | DW_AT_containing_type. | |
673bfd45 DE |
22894 | If there is no type substitute an error marker. */ |
22895 | ||
c906108c | 22896 | static struct type * |
ff39bb5e | 22897 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22898 | struct dwarf2_cu *cu) |
c906108c | 22899 | { |
976ca316 SM |
22900 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
22901 | struct objfile *objfile = per_objfile->objfile; | |
f792889a DJ |
22902 | struct type *this_type; |
22903 | ||
ac9ec31b DE |
22904 | gdb_assert (attr->name == DW_AT_type |
22905 | || attr->name == DW_AT_GNAT_descriptive_type | |
22906 | || attr->name == DW_AT_containing_type); | |
22907 | ||
673bfd45 DE |
22908 | /* First see if we have it cached. */ |
22909 | ||
36586728 TT |
22910 | if (attr->form == DW_FORM_GNU_ref_alt) |
22911 | { | |
22912 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 22913 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 22914 | |
976ca316 SM |
22915 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, per_objfile); |
22916 | this_type = get_die_type_at_offset (sect_off, per_cu, per_objfile); | |
36586728 | 22917 | } |
cd6c91b4 | 22918 | else if (attr->form_is_ref ()) |
673bfd45 | 22919 | { |
0826b30a | 22920 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 22921 | |
976ca316 | 22922 | this_type = get_die_type_at_offset (sect_off, cu->per_cu, per_objfile); |
673bfd45 | 22923 | } |
55f1336d | 22924 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22925 | { |
630ed6b9 | 22926 | ULONGEST signature = attr->as_signature (); |
673bfd45 | 22927 | |
ac9ec31b | 22928 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22929 | } |
22930 | else | |
22931 | { | |
b98664d3 | 22932 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22933 | " at %s [in module %s]"), |
22934 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22935 | objfile_name (objfile)); |
ac9ec31b | 22936 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22937 | } |
22938 | ||
22939 | /* If not cached we need to read it in. */ | |
22940 | ||
22941 | if (this_type == NULL) | |
22942 | { | |
ac9ec31b | 22943 | struct die_info *type_die = NULL; |
673bfd45 DE |
22944 | struct dwarf2_cu *type_cu = cu; |
22945 | ||
cd6c91b4 | 22946 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22947 | type_die = follow_die_ref (die, attr, &type_cu); |
22948 | if (type_die == NULL) | |
22949 | return build_error_marker_type (cu, die); | |
22950 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22951 | from an inter-CU reference and the type's CU got expanded before |
22952 | ours. */ | |
ac9ec31b | 22953 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22954 | } |
22955 | ||
22956 | /* If we still don't have a type use an error marker. */ | |
22957 | ||
22958 | if (this_type == NULL) | |
ac9ec31b | 22959 | return build_error_marker_type (cu, die); |
673bfd45 | 22960 | |
f792889a | 22961 | return this_type; |
c906108c SS |
22962 | } |
22963 | ||
673bfd45 DE |
22964 | /* Return the type in DIE, CU. |
22965 | Returns NULL for invalid types. | |
22966 | ||
02142a6c | 22967 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22968 | and only reads the die in if necessary. |
22969 | ||
22970 | NOTE: This can be called when reading in partial or full symbols. */ | |
22971 | ||
f792889a | 22972 | static struct type * |
e7c27a73 | 22973 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22974 | { |
f792889a DJ |
22975 | struct type *this_type; |
22976 | ||
22977 | this_type = get_die_type (die, cu); | |
22978 | if (this_type) | |
22979 | return this_type; | |
22980 | ||
673bfd45 DE |
22981 | return read_type_die_1 (die, cu); |
22982 | } | |
22983 | ||
22984 | /* Read the type in DIE, CU. | |
22985 | Returns NULL for invalid types. */ | |
22986 | ||
22987 | static struct type * | |
22988 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22989 | { | |
22990 | struct type *this_type = NULL; | |
22991 | ||
c906108c SS |
22992 | switch (die->tag) |
22993 | { | |
22994 | case DW_TAG_class_type: | |
680b30c7 | 22995 | case DW_TAG_interface_type: |
c906108c SS |
22996 | case DW_TAG_structure_type: |
22997 | case DW_TAG_union_type: | |
f792889a | 22998 | this_type = read_structure_type (die, cu); |
c906108c SS |
22999 | break; |
23000 | case DW_TAG_enumeration_type: | |
f792889a | 23001 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
23002 | break; |
23003 | case DW_TAG_subprogram: | |
23004 | case DW_TAG_subroutine_type: | |
edb3359d | 23005 | case DW_TAG_inlined_subroutine: |
f792889a | 23006 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
23007 | break; |
23008 | case DW_TAG_array_type: | |
f792889a | 23009 | this_type = read_array_type (die, cu); |
c906108c | 23010 | break; |
72019c9c | 23011 | case DW_TAG_set_type: |
f792889a | 23012 | this_type = read_set_type (die, cu); |
72019c9c | 23013 | break; |
c906108c | 23014 | case DW_TAG_pointer_type: |
f792889a | 23015 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
23016 | break; |
23017 | case DW_TAG_ptr_to_member_type: | |
f792889a | 23018 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
23019 | break; |
23020 | case DW_TAG_reference_type: | |
4297a3f0 AV |
23021 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
23022 | break; | |
23023 | case DW_TAG_rvalue_reference_type: | |
23024 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
23025 | break; |
23026 | case DW_TAG_const_type: | |
f792889a | 23027 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
23028 | break; |
23029 | case DW_TAG_volatile_type: | |
f792889a | 23030 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 23031 | break; |
06d66ee9 TT |
23032 | case DW_TAG_restrict_type: |
23033 | this_type = read_tag_restrict_type (die, cu); | |
23034 | break; | |
c906108c | 23035 | case DW_TAG_string_type: |
f792889a | 23036 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
23037 | break; |
23038 | case DW_TAG_typedef: | |
f792889a | 23039 | this_type = read_typedef (die, cu); |
c906108c | 23040 | break; |
a02abb62 | 23041 | case DW_TAG_subrange_type: |
f792889a | 23042 | this_type = read_subrange_type (die, cu); |
a02abb62 | 23043 | break; |
c906108c | 23044 | case DW_TAG_base_type: |
f792889a | 23045 | this_type = read_base_type (die, cu); |
c906108c | 23046 | break; |
81a17f79 | 23047 | case DW_TAG_unspecified_type: |
f792889a | 23048 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 23049 | break; |
0114d602 DJ |
23050 | case DW_TAG_namespace: |
23051 | this_type = read_namespace_type (die, cu); | |
23052 | break; | |
f55ee35c JK |
23053 | case DW_TAG_module: |
23054 | this_type = read_module_type (die, cu); | |
23055 | break; | |
a2c2acaf MW |
23056 | case DW_TAG_atomic_type: |
23057 | this_type = read_tag_atomic_type (die, cu); | |
23058 | break; | |
c906108c | 23059 | default: |
b98664d3 | 23060 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 23061 | dwarf_tag_name (die->tag)); |
c906108c SS |
23062 | break; |
23063 | } | |
63d06c5c | 23064 | |
f792889a | 23065 | return this_type; |
63d06c5c DC |
23066 | } |
23067 | ||
abc72ce4 DE |
23068 | /* See if we can figure out if the class lives in a namespace. We do |
23069 | this by looking for a member function; its demangled name will | |
23070 | contain namespace info, if there is any. | |
23071 | Return the computed name or NULL. | |
23072 | Space for the result is allocated on the objfile's obstack. | |
23073 | This is the full-die version of guess_partial_die_structure_name. | |
23074 | In this case we know DIE has no useful parent. */ | |
23075 | ||
43816ebc | 23076 | static const char * |
abc72ce4 DE |
23077 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
23078 | { | |
23079 | struct die_info *spec_die; | |
23080 | struct dwarf2_cu *spec_cu; | |
23081 | struct die_info *child; | |
5e22e966 | 23082 | struct objfile *objfile = cu->per_objfile->objfile; |
abc72ce4 DE |
23083 | |
23084 | spec_cu = cu; | |
23085 | spec_die = die_specification (die, &spec_cu); | |
23086 | if (spec_die != NULL) | |
23087 | { | |
23088 | die = spec_die; | |
23089 | cu = spec_cu; | |
23090 | } | |
23091 | ||
23092 | for (child = die->child; | |
23093 | child != NULL; | |
23094 | child = child->sibling) | |
23095 | { | |
23096 | if (child->tag == DW_TAG_subprogram) | |
23097 | { | |
73b9be8b | 23098 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 23099 | |
7d45c7c3 | 23100 | if (linkage_name != NULL) |
abc72ce4 | 23101 | { |
43816ebc | 23102 | gdb::unique_xmalloc_ptr<char> actual_name |
eff93b4d | 23103 | (cu->language_defn->class_name_from_physname (linkage_name)); |
43816ebc | 23104 | const char *name = NULL; |
abc72ce4 DE |
23105 | |
23106 | if (actual_name != NULL) | |
23107 | { | |
15d034d0 | 23108 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
23109 | |
23110 | if (die_name != NULL | |
43816ebc | 23111 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
23112 | { |
23113 | /* Strip off the class name from the full name. | |
23114 | We want the prefix. */ | |
23115 | int die_name_len = strlen (die_name); | |
43816ebc TT |
23116 | int actual_name_len = strlen (actual_name.get ()); |
23117 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
23118 | |
23119 | /* Test for '::' as a sanity check. */ | |
23120 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 23121 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 23122 | name = obstack_strndup ( |
e3b94546 | 23123 | &objfile->per_bfd->storage_obstack, |
43816ebc | 23124 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
23125 | } |
23126 | } | |
abc72ce4 DE |
23127 | return name; |
23128 | } | |
23129 | } | |
23130 | } | |
23131 | ||
23132 | return NULL; | |
23133 | } | |
23134 | ||
96408a79 SA |
23135 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
23136 | prefix part in such case. See | |
23137 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
23138 | ||
a121b7c1 | 23139 | static const char * |
96408a79 SA |
23140 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
23141 | { | |
23142 | struct attribute *attr; | |
e6a959d6 | 23143 | const char *base; |
96408a79 SA |
23144 | |
23145 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
23146 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
23147 | return NULL; | |
23148 | ||
7d45c7c3 | 23149 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
23150 | return NULL; |
23151 | ||
73b9be8b | 23152 | attr = dw2_linkage_name_attr (die, cu); |
2c830f54 TT |
23153 | const char *attr_name = attr->as_string (); |
23154 | if (attr == NULL || attr_name == NULL) | |
96408a79 SA |
23155 | return NULL; |
23156 | ||
23157 | /* dwarf2_name had to be already called. */ | |
3b64bf15 | 23158 | gdb_assert (attr->canonical_string_p ()); |
96408a79 SA |
23159 | |
23160 | /* Strip the base name, keep any leading namespaces/classes. */ | |
2c830f54 TT |
23161 | base = strrchr (attr_name, ':'); |
23162 | if (base == NULL || base == attr_name || base[-1] != ':') | |
96408a79 SA |
23163 | return ""; |
23164 | ||
5e22e966 | 23165 | struct objfile *objfile = cu->per_objfile->objfile; |
0cf9feb9 | 23166 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
2c830f54 TT |
23167 | attr_name, |
23168 | &base[-1] - attr_name); | |
96408a79 SA |
23169 | } |
23170 | ||
fdde2d81 | 23171 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 23172 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 23173 | |
0114d602 DJ |
23174 | For example, if we're within the method foo() in the following |
23175 | code: | |
23176 | ||
23177 | namespace N { | |
23178 | class C { | |
23179 | void foo () { | |
23180 | } | |
23181 | }; | |
23182 | } | |
23183 | ||
23184 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 23185 | |
0d5cff50 | 23186 | static const char * |
e142c38c | 23187 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 23188 | { |
976ca316 | 23189 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
0114d602 DJ |
23190 | struct die_info *parent, *spec_die; |
23191 | struct dwarf2_cu *spec_cu; | |
23192 | struct type *parent_type; | |
a121b7c1 | 23193 | const char *retval; |
63d06c5c | 23194 | |
9c37b5ae | 23195 | if (cu->language != language_cplus |
c44af4eb TT |
23196 | && cu->language != language_fortran && cu->language != language_d |
23197 | && cu->language != language_rust) | |
0114d602 DJ |
23198 | return ""; |
23199 | ||
96408a79 SA |
23200 | retval = anonymous_struct_prefix (die, cu); |
23201 | if (retval) | |
23202 | return retval; | |
23203 | ||
0114d602 DJ |
23204 | /* We have to be careful in the presence of DW_AT_specification. |
23205 | For example, with GCC 3.4, given the code | |
23206 | ||
23207 | namespace N { | |
23208 | void foo() { | |
23209 | // Definition of N::foo. | |
23210 | } | |
23211 | } | |
23212 | ||
23213 | then we'll have a tree of DIEs like this: | |
23214 | ||
23215 | 1: DW_TAG_compile_unit | |
23216 | 2: DW_TAG_namespace // N | |
23217 | 3: DW_TAG_subprogram // declaration of N::foo | |
23218 | 4: DW_TAG_subprogram // definition of N::foo | |
23219 | DW_AT_specification // refers to die #3 | |
23220 | ||
23221 | Thus, when processing die #4, we have to pretend that we're in | |
23222 | the context of its DW_AT_specification, namely the contex of die | |
23223 | #3. */ | |
23224 | spec_cu = cu; | |
23225 | spec_die = die_specification (die, &spec_cu); | |
23226 | if (spec_die == NULL) | |
23227 | parent = die->parent; | |
23228 | else | |
63d06c5c | 23229 | { |
0114d602 DJ |
23230 | parent = spec_die->parent; |
23231 | cu = spec_cu; | |
63d06c5c | 23232 | } |
0114d602 DJ |
23233 | |
23234 | if (parent == NULL) | |
23235 | return ""; | |
98bfdba5 PA |
23236 | else if (parent->building_fullname) |
23237 | { | |
23238 | const char *name; | |
23239 | const char *parent_name; | |
23240 | ||
23241 | /* It has been seen on RealView 2.2 built binaries, | |
23242 | DW_TAG_template_type_param types actually _defined_ as | |
23243 | children of the parent class: | |
23244 | ||
23245 | enum E {}; | |
23246 | template class <class Enum> Class{}; | |
23247 | Class<enum E> class_e; | |
23248 | ||
dda83cd7 SM |
23249 | 1: DW_TAG_class_type (Class) |
23250 | 2: DW_TAG_enumeration_type (E) | |
23251 | 3: DW_TAG_enumerator (enum1:0) | |
23252 | 3: DW_TAG_enumerator (enum2:1) | |
23253 | ... | |
23254 | 2: DW_TAG_template_type_param | |
23255 | DW_AT_type DW_FORM_ref_udata (E) | |
98bfdba5 PA |
23256 | |
23257 | Besides being broken debug info, it can put GDB into an | |
23258 | infinite loop. Consider: | |
23259 | ||
23260 | When we're building the full name for Class<E>, we'll start | |
23261 | at Class, and go look over its template type parameters, | |
23262 | finding E. We'll then try to build the full name of E, and | |
23263 | reach here. We're now trying to build the full name of E, | |
23264 | and look over the parent DIE for containing scope. In the | |
23265 | broken case, if we followed the parent DIE of E, we'd again | |
23266 | find Class, and once again go look at its template type | |
23267 | arguments, etc., etc. Simply don't consider such parent die | |
23268 | as source-level parent of this die (it can't be, the language | |
23269 | doesn't allow it), and break the loop here. */ | |
23270 | name = dwarf2_name (die, cu); | |
23271 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 23272 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
23273 | name ? name : "<unknown>", |
23274 | parent_name ? parent_name : "<unknown>"); | |
23275 | return ""; | |
23276 | } | |
63d06c5c | 23277 | else |
0114d602 DJ |
23278 | switch (parent->tag) |
23279 | { | |
63d06c5c | 23280 | case DW_TAG_namespace: |
0114d602 | 23281 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
23282 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
23283 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
23284 | Work around this problem here. */ | |
23285 | if (cu->language == language_cplus | |
7d93a1e0 | 23286 | && strcmp (parent_type->name (), "::") == 0) |
acebe513 | 23287 | return ""; |
0114d602 | 23288 | /* We give a name to even anonymous namespaces. */ |
7d93a1e0 | 23289 | return parent_type->name (); |
63d06c5c | 23290 | case DW_TAG_class_type: |
680b30c7 | 23291 | case DW_TAG_interface_type: |
63d06c5c | 23292 | case DW_TAG_structure_type: |
0114d602 | 23293 | case DW_TAG_union_type: |
f55ee35c | 23294 | case DW_TAG_module: |
0114d602 | 23295 | parent_type = read_type_die (parent, cu); |
7d93a1e0 SM |
23296 | if (parent_type->name () != NULL) |
23297 | return parent_type->name (); | |
0114d602 DJ |
23298 | else |
23299 | /* An anonymous structure is only allowed non-static data | |
23300 | members; no typedefs, no member functions, et cetera. | |
23301 | So it does not need a prefix. */ | |
23302 | return ""; | |
abc72ce4 | 23303 | case DW_TAG_compile_unit: |
95554aad | 23304 | case DW_TAG_partial_unit: |
abc72ce4 DE |
23305 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
23306 | if (cu->language == language_cplus | |
976ca316 | 23307 | && !per_objfile->per_bfd->types.empty () |
abc72ce4 DE |
23308 | && die->child != NULL |
23309 | && (die->tag == DW_TAG_class_type | |
23310 | || die->tag == DW_TAG_structure_type | |
23311 | || die->tag == DW_TAG_union_type)) | |
23312 | { | |
43816ebc | 23313 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
23314 | if (name != NULL) |
23315 | return name; | |
23316 | } | |
23317 | return ""; | |
0a4b0913 AB |
23318 | case DW_TAG_subprogram: |
23319 | /* Nested subroutines in Fortran get a prefix with the name | |
23320 | of the parent's subroutine. */ | |
23321 | if (cu->language == language_fortran) | |
23322 | { | |
23323 | if ((die->tag == DW_TAG_subprogram) | |
23324 | && (dwarf2_name (parent, cu) != NULL)) | |
23325 | return dwarf2_name (parent, cu); | |
23326 | } | |
23327 | return determine_prefix (parent, cu); | |
3d567982 TT |
23328 | case DW_TAG_enumeration_type: |
23329 | parent_type = read_type_die (parent, cu); | |
23330 | if (TYPE_DECLARED_CLASS (parent_type)) | |
23331 | { | |
7d93a1e0 SM |
23332 | if (parent_type->name () != NULL) |
23333 | return parent_type->name (); | |
3d567982 TT |
23334 | return ""; |
23335 | } | |
23336 | /* Fall through. */ | |
63d06c5c | 23337 | default: |
8176b9b8 | 23338 | return determine_prefix (parent, cu); |
63d06c5c | 23339 | } |
63d06c5c DC |
23340 | } |
23341 | ||
3e43a32a MS |
23342 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
23343 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
23344 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
23345 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
23346 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 23347 | |
f55ee35c | 23348 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
23349 | |
23350 | static char * | |
f55ee35c | 23351 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
dda83cd7 | 23352 | int physname, struct dwarf2_cu *cu) |
63d06c5c | 23353 | { |
f55ee35c | 23354 | const char *lead = ""; |
5c315b68 | 23355 | const char *sep; |
63d06c5c | 23356 | |
3e43a32a MS |
23357 | if (suffix == NULL || suffix[0] == '\0' |
23358 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 23359 | sep = ""; |
45280282 IB |
23360 | else if (cu->language == language_d) |
23361 | { | |
23362 | /* For D, the 'main' function could be defined in any module, but it | |
23363 | should never be prefixed. */ | |
23364 | if (strcmp (suffix, "D main") == 0) | |
23365 | { | |
23366 | prefix = ""; | |
23367 | sep = ""; | |
23368 | } | |
23369 | else | |
23370 | sep = "."; | |
23371 | } | |
f55ee35c JK |
23372 | else if (cu->language == language_fortran && physname) |
23373 | { | |
23374 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
23375 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
23376 | ||
23377 | lead = "__"; | |
23378 | sep = "_MOD_"; | |
23379 | } | |
987504bb JJ |
23380 | else |
23381 | sep = "::"; | |
63d06c5c | 23382 | |
6dd47d34 DE |
23383 | if (prefix == NULL) |
23384 | prefix = ""; | |
23385 | if (suffix == NULL) | |
23386 | suffix = ""; | |
23387 | ||
987504bb JJ |
23388 | if (obs == NULL) |
23389 | { | |
3e43a32a | 23390 | char *retval |
224c3ddb SM |
23391 | = ((char *) |
23392 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 23393 | |
f55ee35c JK |
23394 | strcpy (retval, lead); |
23395 | strcat (retval, prefix); | |
6dd47d34 DE |
23396 | strcat (retval, sep); |
23397 | strcat (retval, suffix); | |
63d06c5c DC |
23398 | return retval; |
23399 | } | |
987504bb JJ |
23400 | else |
23401 | { | |
23402 | /* We have an obstack. */ | |
f55ee35c | 23403 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 23404 | } |
63d06c5c DC |
23405 | } |
23406 | ||
71c25dea TT |
23407 | /* Get name of a die, return NULL if not found. */ |
23408 | ||
15d034d0 TT |
23409 | static const char * |
23410 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 23411 | struct objfile *objfile) |
71c25dea TT |
23412 | { |
23413 | if (name && cu->language == language_cplus) | |
23414 | { | |
596dc4ad TT |
23415 | gdb::unique_xmalloc_ptr<char> canon_name |
23416 | = cp_canonicalize_string (name); | |
71c25dea | 23417 | |
596dc4ad TT |
23418 | if (canon_name != nullptr) |
23419 | name = objfile->intern (canon_name.get ()); | |
71c25dea TT |
23420 | } |
23421 | ||
23422 | return name; | |
c906108c SS |
23423 | } |
23424 | ||
96553a0c DE |
23425 | /* Get name of a die, return NULL if not found. |
23426 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 23427 | |
15d034d0 | 23428 | static const char * |
e142c38c | 23429 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
23430 | { |
23431 | struct attribute *attr; | |
5e22e966 | 23432 | struct objfile *objfile = cu->per_objfile->objfile; |
9219021c | 23433 | |
e142c38c | 23434 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2c830f54 TT |
23435 | const char *attr_name = attr == nullptr ? nullptr : attr->as_string (); |
23436 | if (attr_name == nullptr | |
96553a0c | 23437 | && die->tag != DW_TAG_namespace |
53832f31 TT |
23438 | && die->tag != DW_TAG_class_type |
23439 | && die->tag != DW_TAG_interface_type | |
23440 | && die->tag != DW_TAG_structure_type | |
23441 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
23442 | return NULL; |
23443 | ||
23444 | switch (die->tag) | |
23445 | { | |
23446 | case DW_TAG_compile_unit: | |
95554aad | 23447 | case DW_TAG_partial_unit: |
71c25dea TT |
23448 | /* Compilation units have a DW_AT_name that is a filename, not |
23449 | a source language identifier. */ | |
23450 | case DW_TAG_enumeration_type: | |
23451 | case DW_TAG_enumerator: | |
23452 | /* These tags always have simple identifiers already; no need | |
23453 | to canonicalize them. */ | |
2c830f54 | 23454 | return attr_name; |
907af001 | 23455 | |
96553a0c | 23456 | case DW_TAG_namespace: |
2c830f54 TT |
23457 | if (attr_name != nullptr) |
23458 | return attr_name; | |
96553a0c DE |
23459 | return CP_ANONYMOUS_NAMESPACE_STR; |
23460 | ||
907af001 UW |
23461 | case DW_TAG_class_type: |
23462 | case DW_TAG_interface_type: | |
23463 | case DW_TAG_structure_type: | |
23464 | case DW_TAG_union_type: | |
23465 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
23466 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
23467 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
23468 | and GCC 4.4. We work around this problem by ignoring these. */ | |
2c830f54 TT |
23469 | if (attr_name != nullptr |
23470 | && (startswith (attr_name, "._") | |
23471 | || startswith (attr_name, "<anonymous"))) | |
907af001 | 23472 | return NULL; |
53832f31 TT |
23473 | |
23474 | /* GCC might emit a nameless typedef that has a linkage name. See | |
23475 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
2c830f54 | 23476 | if (!attr || attr_name == NULL) |
53832f31 | 23477 | { |
73b9be8b | 23478 | attr = dw2_linkage_name_attr (die, cu); |
95eb9e54 | 23479 | attr_name = attr == nullptr ? nullptr : attr->as_string (); |
2c830f54 | 23480 | if (attr == NULL || attr_name == NULL) |
53832f31 TT |
23481 | return NULL; |
23482 | ||
2c830f54 | 23483 | /* Avoid demangling attr_name the second time on a second |
df5c6c50 | 23484 | call for the same DIE. */ |
3b64bf15 | 23485 | if (!attr->canonical_string_p ()) |
53832f31 | 23486 | { |
43816ebc | 23487 | gdb::unique_xmalloc_ptr<char> demangled |
2c830f54 | 23488 | (gdb_demangle (attr_name, DMGL_TYPES)); |
4f180d53 AT |
23489 | if (demangled == nullptr) |
23490 | return nullptr; | |
43816ebc | 23491 | |
c6481205 | 23492 | attr->set_string_canonical (objfile->intern (demangled.get ())); |
95eb9e54 | 23493 | attr_name = attr->as_string (); |
53832f31 | 23494 | } |
67430cd0 | 23495 | |
2c830f54 TT |
23496 | /* Strip any leading namespaces/classes, keep only the |
23497 | base name. DW_AT_name for named DIEs does not | |
23498 | contain the prefixes. */ | |
23499 | const char *base = strrchr (attr_name, ':'); | |
23500 | if (base && base > attr_name && base[-1] == ':') | |
67430cd0 TT |
23501 | return &base[1]; |
23502 | else | |
2c830f54 | 23503 | return attr_name; |
53832f31 | 23504 | } |
907af001 UW |
23505 | break; |
23506 | ||
71c25dea | 23507 | default: |
907af001 UW |
23508 | break; |
23509 | } | |
23510 | ||
3b64bf15 | 23511 | if (!attr->canonical_string_p ()) |
c6481205 TT |
23512 | attr->set_string_canonical (dwarf2_canonicalize_name (attr_name, cu, |
23513 | objfile)); | |
2c830f54 | 23514 | return attr->as_string (); |
9219021c DC |
23515 | } |
23516 | ||
23517 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
23518 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
23519 | containing the return value on output. */ | |
9219021c DC |
23520 | |
23521 | static struct die_info * | |
f2f0e013 | 23522 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
23523 | { |
23524 | struct attribute *attr; | |
9219021c | 23525 | |
f2f0e013 | 23526 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
23527 | if (attr == NULL) |
23528 | return NULL; | |
23529 | ||
f2f0e013 | 23530 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
23531 | } |
23532 | ||
f9aca02d | 23533 | static void |
d97bc12b | 23534 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
23535 | { |
23536 | unsigned int i; | |
23537 | ||
d97bc12b | 23538 | print_spaces (indent, f); |
9d8780f0 | 23539 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 23540 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 23541 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
23542 | |
23543 | if (die->parent != NULL) | |
23544 | { | |
23545 | print_spaces (indent, f); | |
9d8780f0 SM |
23546 | fprintf_unfiltered (f, " parent at offset: %s\n", |
23547 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
23548 | } |
23549 | ||
23550 | print_spaces (indent, f); | |
23551 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 23552 | dwarf_bool_name (die->child != NULL)); |
c906108c | 23553 | |
d97bc12b DE |
23554 | print_spaces (indent, f); |
23555 | fprintf_unfiltered (f, " attributes:\n"); | |
23556 | ||
c906108c SS |
23557 | for (i = 0; i < die->num_attrs; ++i) |
23558 | { | |
d97bc12b DE |
23559 | print_spaces (indent, f); |
23560 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
23561 | dwarf_attr_name (die->attrs[i].name), |
23562 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 23563 | |
c906108c SS |
23564 | switch (die->attrs[i].form) |
23565 | { | |
c906108c | 23566 | case DW_FORM_addr: |
336d760d | 23567 | case DW_FORM_addrx: |
3019eac3 | 23568 | case DW_FORM_GNU_addr_index: |
d97bc12b | 23569 | fprintf_unfiltered (f, "address: "); |
36d378cf | 23570 | fputs_filtered (hex_string (die->attrs[i].as_address ()), f); |
c906108c SS |
23571 | break; |
23572 | case DW_FORM_block2: | |
23573 | case DW_FORM_block4: | |
23574 | case DW_FORM_block: | |
23575 | case DW_FORM_block1: | |
56eb65bd | 23576 | fprintf_unfiltered (f, "block: size %s", |
9d2246fc | 23577 | pulongest (die->attrs[i].as_block ()->size)); |
c906108c | 23578 | break; |
2dc7f7b3 | 23579 | case DW_FORM_exprloc: |
56eb65bd | 23580 | fprintf_unfiltered (f, "expression: size %s", |
9d2246fc | 23581 | pulongest (die->attrs[i].as_block ()->size)); |
2dc7f7b3 | 23582 | break; |
0224619f JK |
23583 | case DW_FORM_data16: |
23584 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
23585 | break; | |
4568ecf9 DE |
23586 | case DW_FORM_ref_addr: |
23587 | fprintf_unfiltered (f, "ref address: "); | |
529908cb | 23588 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
4568ecf9 | 23589 | break; |
36586728 TT |
23590 | case DW_FORM_GNU_ref_alt: |
23591 | fprintf_unfiltered (f, "alt ref address: "); | |
529908cb | 23592 | fputs_filtered (hex_string (die->attrs[i].as_unsigned ()), f); |
36586728 | 23593 | break; |
10b3939b DJ |
23594 | case DW_FORM_ref1: |
23595 | case DW_FORM_ref2: | |
23596 | case DW_FORM_ref4: | |
4568ecf9 DE |
23597 | case DW_FORM_ref8: |
23598 | case DW_FORM_ref_udata: | |
d97bc12b | 23599 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
529908cb | 23600 | (long) (die->attrs[i].as_unsigned ())); |
10b3939b | 23601 | break; |
c906108c SS |
23602 | case DW_FORM_data1: |
23603 | case DW_FORM_data2: | |
23604 | case DW_FORM_data4: | |
ce5d95e1 | 23605 | case DW_FORM_data8: |
c906108c | 23606 | case DW_FORM_udata: |
43bbcdc2 | 23607 | fprintf_unfiltered (f, "constant: %s", |
529908cb | 23608 | pulongest (die->attrs[i].as_unsigned ())); |
c906108c | 23609 | break; |
2dc7f7b3 TT |
23610 | case DW_FORM_sec_offset: |
23611 | fprintf_unfiltered (f, "section offset: %s", | |
529908cb | 23612 | pulongest (die->attrs[i].as_unsigned ())); |
2dc7f7b3 | 23613 | break; |
55f1336d | 23614 | case DW_FORM_ref_sig8: |
ac9ec31b | 23615 | fprintf_unfiltered (f, "signature: %s", |
630ed6b9 | 23616 | hex_string (die->attrs[i].as_signature ())); |
348e048f | 23617 | break; |
c906108c | 23618 | case DW_FORM_string: |
4bdf3d34 | 23619 | case DW_FORM_strp: |
43988095 | 23620 | case DW_FORM_line_strp: |
cf532bd1 | 23621 | case DW_FORM_strx: |
3019eac3 | 23622 | case DW_FORM_GNU_str_index: |
36586728 | 23623 | case DW_FORM_GNU_strp_alt: |
8285870a | 23624 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c6481205 TT |
23625 | die->attrs[i].as_string () |
23626 | ? die->attrs[i].as_string () : "", | |
23627 | die->attrs[i].canonical_string_p () ? "is" : "not"); | |
c906108c SS |
23628 | break; |
23629 | case DW_FORM_flag: | |
c45bc3f8 | 23630 | if (die->attrs[i].as_boolean ()) |
d97bc12b | 23631 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 23632 | else |
d97bc12b | 23633 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 23634 | break; |
2dc7f7b3 TT |
23635 | case DW_FORM_flag_present: |
23636 | fprintf_unfiltered (f, "flag: TRUE"); | |
23637 | break; | |
a8329558 | 23638 | case DW_FORM_indirect: |
0963b4bd MS |
23639 | /* The reader will have reduced the indirect form to |
23640 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 23641 | fprintf_unfiltered (f, |
3e43a32a | 23642 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 23643 | break; |
1bc397c5 | 23644 | case DW_FORM_sdata: |
663c44ac JK |
23645 | case DW_FORM_implicit_const: |
23646 | fprintf_unfiltered (f, "constant: %s", | |
1bc397c5 | 23647 | plongest (die->attrs[i].as_signed ())); |
663c44ac | 23648 | break; |
c906108c | 23649 | default: |
d97bc12b | 23650 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 23651 | die->attrs[i].form); |
d97bc12b | 23652 | break; |
c906108c | 23653 | } |
d97bc12b | 23654 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
23655 | } |
23656 | } | |
23657 | ||
f9aca02d | 23658 | static void |
d97bc12b | 23659 | dump_die_for_error (struct die_info *die) |
c906108c | 23660 | { |
d97bc12b DE |
23661 | dump_die_shallow (gdb_stderr, 0, die); |
23662 | } | |
23663 | ||
23664 | static void | |
23665 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
23666 | { | |
23667 | int indent = level * 4; | |
23668 | ||
23669 | gdb_assert (die != NULL); | |
23670 | ||
23671 | if (level >= max_level) | |
23672 | return; | |
23673 | ||
23674 | dump_die_shallow (f, indent, die); | |
23675 | ||
23676 | if (die->child != NULL) | |
c906108c | 23677 | { |
d97bc12b DE |
23678 | print_spaces (indent, f); |
23679 | fprintf_unfiltered (f, " Children:"); | |
23680 | if (level + 1 < max_level) | |
23681 | { | |
23682 | fprintf_unfiltered (f, "\n"); | |
23683 | dump_die_1 (f, level + 1, max_level, die->child); | |
23684 | } | |
23685 | else | |
23686 | { | |
3e43a32a MS |
23687 | fprintf_unfiltered (f, |
23688 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
23689 | } |
23690 | } | |
23691 | ||
23692 | if (die->sibling != NULL && level > 0) | |
23693 | { | |
23694 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
23695 | } |
23696 | } | |
23697 | ||
d97bc12b DE |
23698 | /* This is called from the pdie macro in gdbinit.in. |
23699 | It's not static so gcc will keep a copy callable from gdb. */ | |
23700 | ||
23701 | void | |
23702 | dump_die (struct die_info *die, int max_level) | |
23703 | { | |
23704 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
23705 | } | |
23706 | ||
f9aca02d | 23707 | static void |
51545339 | 23708 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 23709 | { |
51545339 | 23710 | void **slot; |
c906108c | 23711 | |
9c541725 PA |
23712 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
23713 | to_underlying (die->sect_off), | |
b64f50a1 | 23714 | INSERT); |
51545339 DJ |
23715 | |
23716 | *slot = die; | |
c906108c SS |
23717 | } |
23718 | ||
348e048f DE |
23719 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
23720 | On entry *REF_CU is the CU of SRC_DIE. | |
23721 | On exit *REF_CU is the CU of the result. */ | |
23722 | ||
23723 | static struct die_info * | |
ff39bb5e | 23724 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
23725 | struct dwarf2_cu **ref_cu) |
23726 | { | |
23727 | struct die_info *die; | |
23728 | ||
cd6c91b4 | 23729 | if (attr->form_is_ref ()) |
348e048f | 23730 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 23731 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
23732 | die = follow_die_sig (src_die, attr, ref_cu); |
23733 | else | |
23734 | { | |
23735 | dump_die_for_error (src_die); | |
23736 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
5e22e966 | 23737 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
348e048f DE |
23738 | } |
23739 | ||
23740 | return die; | |
03dd20cc DJ |
23741 | } |
23742 | ||
5c631832 | 23743 | /* Follow reference OFFSET. |
673bfd45 DE |
23744 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
23745 | On exit *REF_CU is the CU of the result. | |
23746 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 23747 | |
f9aca02d | 23748 | static struct die_info * |
9c541725 | 23749 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 23750 | struct dwarf2_cu **ref_cu) |
c906108c | 23751 | { |
10b3939b | 23752 | struct die_info temp_die; |
f2f0e013 | 23753 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
976ca316 | 23754 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
10b3939b | 23755 | |
348e048f DE |
23756 | gdb_assert (cu->per_cu != NULL); |
23757 | ||
98bfdba5 PA |
23758 | target_cu = cu; |
23759 | ||
17e593e9 SM |
23760 | dwarf_read_debug_printf_v ("source CU offset: %s, target offset: %s, " |
23761 | "source CU contains target offset: %d", | |
23762 | sect_offset_str (cu->per_cu->sect_off), | |
23763 | sect_offset_str (sect_off), | |
23764 | cu->header.offset_in_cu_p (sect_off)); | |
23765 | ||
3019eac3 | 23766 | if (cu->per_cu->is_debug_types) |
348e048f DE |
23767 | { |
23768 | /* .debug_types CUs cannot reference anything outside their CU. | |
23769 | If they need to, they have to reference a signatured type via | |
55f1336d | 23770 | DW_FORM_ref_sig8. */ |
4057dfde | 23771 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 23772 | return NULL; |
348e048f | 23773 | } |
36586728 | 23774 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 23775 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
23776 | { |
23777 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 23778 | |
9c541725 | 23779 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
976ca316 | 23780 | per_objfile); |
03dd20cc | 23781 | |
17e593e9 SM |
23782 | dwarf_read_debug_printf_v ("target CU offset: %s, " |
23783 | "target CU DIEs loaded: %d", | |
23784 | sect_offset_str (per_cu->sect_off), | |
23785 | per_objfile->get_cu (per_cu) != nullptr); | |
23786 | ||
616c069a SM |
23787 | /* If necessary, add it to the queue and load its DIEs. |
23788 | ||
23789 | Even if maybe_queue_comp_unit doesn't require us to load the CU's DIEs, | |
23790 | it doesn't mean they are currently loaded. Since we require them | |
23791 | to be loaded, we must check for ourselves. */ | |
23792 | if (maybe_queue_comp_unit (cu, per_cu, per_objfile, cu->language) | |
23793 | || per_objfile->get_cu (per_cu) == nullptr) | |
4a636814 SM |
23794 | load_full_comp_unit (per_cu, per_objfile, per_objfile->get_cu (per_cu), |
23795 | false, cu->language); | |
03dd20cc | 23796 | |
976ca316 | 23797 | target_cu = per_objfile->get_cu (per_cu); |
616c069a | 23798 | gdb_assert (target_cu != nullptr); |
10b3939b | 23799 | } |
98bfdba5 PA |
23800 | else if (cu->dies == NULL) |
23801 | { | |
23802 | /* We're loading full DIEs during partial symbol reading. */ | |
976ca316 | 23803 | gdb_assert (per_objfile->per_bfd->reading_partial_symbols); |
4a636814 SM |
23804 | load_full_comp_unit (cu->per_cu, per_objfile, cu, false, |
23805 | language_minimal); | |
98bfdba5 | 23806 | } |
c906108c | 23807 | |
f2f0e013 | 23808 | *ref_cu = target_cu; |
9c541725 | 23809 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
23810 | |
23811 | if (target_cu != cu) | |
23812 | target_cu->ancestor = cu; | |
23813 | ||
9a3c8263 | 23814 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
23815 | &temp_die, |
23816 | to_underlying (sect_off)); | |
5c631832 | 23817 | } |
10b3939b | 23818 | |
5c631832 JK |
23819 | /* Follow reference attribute ATTR of SRC_DIE. |
23820 | On entry *REF_CU is the CU of SRC_DIE. | |
23821 | On exit *REF_CU is the CU of the result. */ | |
23822 | ||
23823 | static struct die_info * | |
ff39bb5e | 23824 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23825 | struct dwarf2_cu **ref_cu) |
23826 | { | |
0826b30a | 23827 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
23828 | struct dwarf2_cu *cu = *ref_cu; |
23829 | struct die_info *die; | |
23830 | ||
9c541725 | 23831 | die = follow_die_offset (sect_off, |
36586728 TT |
23832 | (attr->form == DW_FORM_GNU_ref_alt |
23833 | || cu->per_cu->is_dwz), | |
23834 | ref_cu); | |
5c631832 | 23835 | if (!die) |
9d8780f0 SM |
23836 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23837 | "at %s [in module %s]"), | |
23838 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
5e22e966 | 23839 | objfile_name (cu->per_objfile->objfile)); |
348e048f | 23840 | |
5c631832 JK |
23841 | return die; |
23842 | } | |
23843 | ||
d4c9a4f8 | 23844 | /* See read.h. */ |
5c631832 JK |
23845 | |
23846 | struct dwarf2_locexpr_baton | |
9c541725 | 23847 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 23848 | dwarf2_per_cu_data *per_cu, |
976ca316 | 23849 | dwarf2_per_objfile *per_objfile, |
041d9819 SM |
23850 | gdb::function_view<CORE_ADDR ()> get_frame_pc, |
23851 | bool resolve_abstract_p) | |
5c631832 | 23852 | { |
5c631832 JK |
23853 | struct die_info *die; |
23854 | struct attribute *attr; | |
23855 | struct dwarf2_locexpr_baton retval; | |
976ca316 | 23856 | struct objfile *objfile = per_objfile->objfile; |
8cf6f0b1 | 23857 | |
976ca316 | 23858 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 | 23859 | if (cu == nullptr) |
976ca316 | 23860 | cu = load_cu (per_cu, per_objfile, false); |
1b555f17 SM |
23861 | |
23862 | if (cu == nullptr) | |
cc12ce38 DE |
23863 | { |
23864 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23865 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23866 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23867 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23868 | } |
918dd910 | 23869 | |
9c541725 | 23870 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23871 | if (!die) |
9d8780f0 SM |
23872 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23873 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23874 | |
23875 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 23876 | if (!attr && resolve_abstract_p |
976ca316 SM |
23877 | && (per_objfile->per_bfd->abstract_to_concrete.find (die->sect_off) |
23878 | != per_objfile->per_bfd->abstract_to_concrete.end ())) | |
e4a62c65 | 23879 | { |
041d9819 | 23880 | CORE_ADDR pc = get_frame_pc (); |
b3b3bada | 23881 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 23882 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 23883 | |
3360b6e7 | 23884 | for (const auto &cand_off |
976ca316 | 23885 | : per_objfile->per_bfd->abstract_to_concrete[die->sect_off]) |
e4a62c65 | 23886 | { |
3360b6e7 TV |
23887 | struct dwarf2_cu *cand_cu = cu; |
23888 | struct die_info *cand | |
23889 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
23890 | if (!cand | |
23891 | || !cand->parent | |
e4a62c65 TV |
23892 | || cand->parent->tag != DW_TAG_subprogram) |
23893 | continue; | |
23894 | ||
23895 | CORE_ADDR pc_low, pc_high; | |
23896 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
23897 | if (pc_low == ((CORE_ADDR) -1)) |
23898 | continue; | |
23899 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
23900 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
23901 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
23902 | continue; |
23903 | ||
23904 | die = cand; | |
23905 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23906 | break; | |
23907 | } | |
23908 | } | |
23909 | ||
5c631832 JK |
23910 | if (!attr) |
23911 | { | |
e103e986 JK |
23912 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23913 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23914 | |
e103e986 | 23915 | retval.data = NULL; |
5c631832 JK |
23916 | retval.size = 0; |
23917 | } | |
cd6c91b4 | 23918 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
23919 | { |
23920 | struct dwarf2_loclist_baton loclist_baton; | |
041d9819 | 23921 | CORE_ADDR pc = get_frame_pc (); |
8cf6f0b1 TT |
23922 | size_t size; |
23923 | ||
23924 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23925 | ||
23926 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23927 | &size, pc); | |
23928 | retval.size = size; | |
23929 | } | |
5c631832 JK |
23930 | else |
23931 | { | |
4fc6c0d5 | 23932 | if (!attr->form_is_block ()) |
9d8780f0 | 23933 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23934 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23935 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 | 23936 | |
9d2246fc TT |
23937 | struct dwarf_block *block = attr->as_block (); |
23938 | retval.data = block->data; | |
23939 | retval.size = block->size; | |
5c631832 | 23940 | } |
976ca316 | 23941 | retval.per_objfile = per_objfile; |
5c631832 | 23942 | retval.per_cu = cu->per_cu; |
918dd910 | 23943 | |
976ca316 | 23944 | per_objfile->age_comp_units (); |
918dd910 | 23945 | |
5c631832 | 23946 | return retval; |
348e048f DE |
23947 | } |
23948 | ||
d4c9a4f8 | 23949 | /* See read.h. */ |
8b9737bf TT |
23950 | |
23951 | struct dwarf2_locexpr_baton | |
23952 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 23953 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23954 | dwarf2_per_objfile *per_objfile, |
041d9819 | 23955 | gdb::function_view<CORE_ADDR ()> get_frame_pc) |
8b9737bf | 23956 | { |
9c541725 | 23957 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23958 | |
14095eb3 | 23959 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, per_objfile, |
041d9819 | 23960 | get_frame_pc); |
8b9737bf TT |
23961 | } |
23962 | ||
b6807d98 TT |
23963 | /* Write a constant of a given type as target-ordered bytes into |
23964 | OBSTACK. */ | |
23965 | ||
23966 | static const gdb_byte * | |
23967 | write_constant_as_bytes (struct obstack *obstack, | |
23968 | enum bfd_endian byte_order, | |
23969 | struct type *type, | |
23970 | ULONGEST value, | |
23971 | LONGEST *len) | |
23972 | { | |
23973 | gdb_byte *result; | |
23974 | ||
23975 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23976 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23977 | store_unsigned_integer (result, *len, byte_order, value); |
23978 | ||
23979 | return result; | |
23980 | } | |
23981 | ||
d4c9a4f8 | 23982 | /* See read.h. */ |
b6807d98 TT |
23983 | |
23984 | const gdb_byte * | |
9c541725 | 23985 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 | 23986 | dwarf2_per_cu_data *per_cu, |
14095eb3 | 23987 | dwarf2_per_objfile *per_objfile, |
d4c9a4f8 | 23988 | obstack *obstack, |
b6807d98 TT |
23989 | LONGEST *len) |
23990 | { | |
b6807d98 TT |
23991 | struct die_info *die; |
23992 | struct attribute *attr; | |
23993 | const gdb_byte *result = NULL; | |
23994 | struct type *type; | |
23995 | LONGEST value; | |
23996 | enum bfd_endian byte_order; | |
14095eb3 | 23997 | struct objfile *objfile = per_objfile->objfile; |
b6807d98 | 23998 | |
7188ed02 | 23999 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
24000 | if (cu == nullptr) |
24001 | cu = load_cu (per_cu, per_objfile, false); | |
24002 | ||
24003 | if (cu == nullptr) | |
cc12ce38 DE |
24004 | { |
24005 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
24006 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
24007 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
24008 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 24009 | } |
b6807d98 | 24010 | |
9c541725 | 24011 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 24012 | if (!die) |
9d8780f0 SM |
24013 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
24014 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
24015 | |
24016 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
24017 | if (attr == NULL) | |
24018 | return NULL; | |
24019 | ||
e3b94546 | 24020 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
24021 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
24022 | ||
24023 | switch (attr->form) | |
24024 | { | |
24025 | case DW_FORM_addr: | |
336d760d | 24026 | case DW_FORM_addrx: |
b6807d98 TT |
24027 | case DW_FORM_GNU_addr_index: |
24028 | { | |
24029 | gdb_byte *tem; | |
24030 | ||
24031 | *len = cu->header.addr_size; | |
224c3ddb | 24032 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
36d378cf | 24033 | store_unsigned_integer (tem, *len, byte_order, attr->as_address ()); |
b6807d98 TT |
24034 | result = tem; |
24035 | } | |
24036 | break; | |
24037 | case DW_FORM_string: | |
24038 | case DW_FORM_strp: | |
cf532bd1 | 24039 | case DW_FORM_strx: |
b6807d98 TT |
24040 | case DW_FORM_GNU_str_index: |
24041 | case DW_FORM_GNU_strp_alt: | |
c6481205 | 24042 | /* The string is already allocated on the objfile obstack, point |
b6807d98 | 24043 | directly to it. */ |
2c830f54 TT |
24044 | { |
24045 | const char *attr_name = attr->as_string (); | |
24046 | result = (const gdb_byte *) attr_name; | |
24047 | *len = strlen (attr_name); | |
24048 | } | |
b6807d98 TT |
24049 | break; |
24050 | case DW_FORM_block1: | |
24051 | case DW_FORM_block2: | |
24052 | case DW_FORM_block4: | |
24053 | case DW_FORM_block: | |
24054 | case DW_FORM_exprloc: | |
0224619f | 24055 | case DW_FORM_data16: |
9d2246fc TT |
24056 | { |
24057 | struct dwarf_block *block = attr->as_block (); | |
24058 | result = block->data; | |
24059 | *len = block->size; | |
24060 | } | |
b6807d98 TT |
24061 | break; |
24062 | ||
24063 | /* The DW_AT_const_value attributes are supposed to carry the | |
24064 | symbol's value "represented as it would be on the target | |
24065 | architecture." By the time we get here, it's already been | |
24066 | converted to host endianness, so we just need to sign- or | |
24067 | zero-extend it as appropriate. */ | |
24068 | case DW_FORM_data1: | |
24069 | type = die_type (die, cu); | |
24070 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
24071 | if (result == NULL) | |
24072 | result = write_constant_as_bytes (obstack, byte_order, | |
24073 | type, value, len); | |
24074 | break; | |
24075 | case DW_FORM_data2: | |
24076 | type = die_type (die, cu); | |
24077 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
24078 | if (result == NULL) | |
24079 | result = write_constant_as_bytes (obstack, byte_order, | |
24080 | type, value, len); | |
24081 | break; | |
24082 | case DW_FORM_data4: | |
24083 | type = die_type (die, cu); | |
24084 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
24085 | if (result == NULL) | |
24086 | result = write_constant_as_bytes (obstack, byte_order, | |
24087 | type, value, len); | |
24088 | break; | |
24089 | case DW_FORM_data8: | |
24090 | type = die_type (die, cu); | |
24091 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
24092 | if (result == NULL) | |
24093 | result = write_constant_as_bytes (obstack, byte_order, | |
24094 | type, value, len); | |
24095 | break; | |
24096 | ||
24097 | case DW_FORM_sdata: | |
663c44ac | 24098 | case DW_FORM_implicit_const: |
b6807d98 TT |
24099 | type = die_type (die, cu); |
24100 | result = write_constant_as_bytes (obstack, byte_order, | |
1bc397c5 | 24101 | type, attr->as_signed (), len); |
b6807d98 TT |
24102 | break; |
24103 | ||
24104 | case DW_FORM_udata: | |
24105 | type = die_type (die, cu); | |
24106 | result = write_constant_as_bytes (obstack, byte_order, | |
529908cb | 24107 | type, attr->as_unsigned (), len); |
b6807d98 TT |
24108 | break; |
24109 | ||
24110 | default: | |
b98664d3 | 24111 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
24112 | dwarf_form_name (attr->form)); |
24113 | break; | |
24114 | } | |
24115 | ||
24116 | return result; | |
24117 | } | |
24118 | ||
d4c9a4f8 | 24119 | /* See read.h. */ |
7942e96e AA |
24120 | |
24121 | struct type * | |
9c541725 | 24122 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
14095eb3 SM |
24123 | dwarf2_per_cu_data *per_cu, |
24124 | dwarf2_per_objfile *per_objfile) | |
7942e96e | 24125 | { |
7942e96e AA |
24126 | struct die_info *die; |
24127 | ||
7188ed02 | 24128 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); |
1b555f17 SM |
24129 | if (cu == nullptr) |
24130 | cu = load_cu (per_cu, per_objfile, false); | |
24131 | ||
24132 | if (cu == nullptr) | |
24133 | return nullptr; | |
7942e96e | 24134 | |
9c541725 | 24135 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
24136 | if (!die) |
24137 | return NULL; | |
24138 | ||
24139 | return die_type (die, cu); | |
24140 | } | |
24141 | ||
8cb5117c | 24142 | /* See read.h. */ |
8a9b8146 TT |
24143 | |
24144 | struct type * | |
b64f50a1 | 24145 | dwarf2_get_die_type (cu_offset die_offset, |
aa66c379 SM |
24146 | dwarf2_per_cu_data *per_cu, |
24147 | dwarf2_per_objfile *per_objfile) | |
8a9b8146 | 24148 | { |
9c541725 | 24149 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
aa66c379 | 24150 | return get_die_type_at_offset (die_offset_sect, per_cu, per_objfile); |
8a9b8146 TT |
24151 | } |
24152 | ||
ac9ec31b | 24153 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 24154 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
24155 | On exit *REF_CU is the CU of the result. |
24156 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
24157 | |
24158 | static struct die_info * | |
ac9ec31b DE |
24159 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
24160 | struct dwarf2_cu **ref_cu) | |
348e048f | 24161 | { |
348e048f | 24162 | struct die_info temp_die; |
c24bdb02 | 24163 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f | 24164 | struct die_info *die; |
976ca316 | 24165 | dwarf2_per_objfile *per_objfile = (*ref_cu)->per_objfile; |
120ce1b5 | 24166 | |
348e048f | 24167 | |
ac9ec31b DE |
24168 | /* While it might be nice to assert sig_type->type == NULL here, |
24169 | we can get here for DW_AT_imported_declaration where we need | |
24170 | the DIE not the type. */ | |
348e048f | 24171 | |
616c069a | 24172 | /* If necessary, add it to the queue and load its DIEs. |
348e048f | 24173 | |
616c069a SM |
24174 | Even if maybe_queue_comp_unit doesn't require us to load the CU's DIEs, |
24175 | it doesn't mean they are currently loaded. Since we require them | |
24176 | to be loaded, we must check for ourselves. */ | |
976ca316 | 24177 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, per_objfile, |
616c069a SM |
24178 | language_minimal) |
24179 | || per_objfile->get_cu (&sig_type->per_cu) == nullptr) | |
976ca316 | 24180 | read_signatured_type (sig_type, per_objfile); |
348e048f | 24181 | |
976ca316 | 24182 | sig_cu = per_objfile->get_cu (&sig_type->per_cu); |
69d751e3 | 24183 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
24184 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
24185 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 24186 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 24187 | to_underlying (temp_die.sect_off)); |
348e048f DE |
24188 | if (die) |
24189 | { | |
796a7ff8 DE |
24190 | /* For .gdb_index version 7 keep track of included TUs. |
24191 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
976ca316 SM |
24192 | if (per_objfile->per_bfd->index_table != NULL |
24193 | && per_objfile->per_bfd->index_table->version <= 7) | |
796a7ff8 | 24194 | { |
ae640021 | 24195 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
24196 | } |
24197 | ||
348e048f | 24198 | *ref_cu = sig_cu; |
c24bdb02 KS |
24199 | if (sig_cu != cu) |
24200 | sig_cu->ancestor = cu; | |
24201 | ||
348e048f DE |
24202 | return die; |
24203 | } | |
24204 | ||
ac9ec31b DE |
24205 | return NULL; |
24206 | } | |
24207 | ||
24208 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
24209 | On entry *REF_CU is the CU of SRC_DIE. | |
24210 | On exit *REF_CU is the CU of the result. | |
24211 | The result is the DIE of the type. | |
24212 | If the referenced type cannot be found an error is thrown. */ | |
24213 | ||
24214 | static struct die_info * | |
ff39bb5e | 24215 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
24216 | struct dwarf2_cu **ref_cu) |
24217 | { | |
630ed6b9 | 24218 | ULONGEST signature = attr->as_signature (); |
ac9ec31b DE |
24219 | struct signatured_type *sig_type; |
24220 | struct die_info *die; | |
24221 | ||
24222 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
24223 | ||
a2ce51a0 | 24224 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
24225 | /* sig_type will be NULL if the signatured type is missing from |
24226 | the debug info. */ | |
24227 | if (sig_type == NULL) | |
24228 | { | |
24229 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
dda83cd7 SM |
24230 | " from DIE at %s [in module %s]"), |
24231 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 24232 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
24233 | } |
24234 | ||
24235 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
24236 | if (die == NULL) | |
24237 | { | |
24238 | dump_die_for_error (src_die); | |
24239 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
24240 | " from DIE at %s [in module %s]"), |
24241 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 24242 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
24243 | } |
24244 | ||
24245 | return die; | |
24246 | } | |
24247 | ||
24248 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
24249 | reading in and processing the type unit if necessary. */ | |
24250 | ||
24251 | static struct type * | |
24252 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
24253 | struct dwarf2_cu *cu) | |
24254 | { | |
976ca316 | 24255 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ac9ec31b DE |
24256 | struct signatured_type *sig_type; |
24257 | struct dwarf2_cu *type_cu; | |
24258 | struct die_info *type_die; | |
24259 | struct type *type; | |
24260 | ||
a2ce51a0 | 24261 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
24262 | /* sig_type will be NULL if the signatured type is missing from |
24263 | the debug info. */ | |
24264 | if (sig_type == NULL) | |
24265 | { | |
b98664d3 | 24266 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
24267 | " from DIE at %s [in module %s]"), |
24268 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 24269 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24270 | return build_error_marker_type (cu, die); |
24271 | } | |
24272 | ||
24273 | /* If we already know the type we're done. */ | |
976ca316 | 24274 | type = per_objfile->get_type_for_signatured_type (sig_type); |
e286671b TT |
24275 | if (type != nullptr) |
24276 | return type; | |
ac9ec31b DE |
24277 | |
24278 | type_cu = cu; | |
24279 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
24280 | if (type_die != NULL) | |
24281 | { | |
24282 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
24283 | is created. This is important, for example, because for c++ classes | |
24284 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
24285 | type = read_type_die (type_die, type_cu); | |
24286 | if (type == NULL) | |
24287 | { | |
b98664d3 | 24288 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
24289 | " referenced from DIE at %s [in module %s]"), |
24290 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 24291 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24292 | type = build_error_marker_type (cu, die); |
24293 | } | |
24294 | } | |
24295 | else | |
24296 | { | |
b98664d3 | 24297 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
24298 | " from DIE at %s [in module %s]"), |
24299 | hex_string (signature), sect_offset_str (die->sect_off), | |
976ca316 | 24300 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24301 | type = build_error_marker_type (cu, die); |
24302 | } | |
e286671b | 24303 | |
976ca316 | 24304 | per_objfile->set_type_for_signatured_type (sig_type, type); |
ac9ec31b DE |
24305 | |
24306 | return type; | |
24307 | } | |
24308 | ||
24309 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
24310 | reading in and processing the type unit if necessary. */ | |
24311 | ||
24312 | static struct type * | |
ff39bb5e | 24313 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 24314 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
24315 | { |
24316 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 24317 | if (attr->form_is_ref ()) |
ac9ec31b DE |
24318 | { |
24319 | struct dwarf2_cu *type_cu = cu; | |
24320 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
24321 | ||
24322 | return read_type_die (type_die, type_cu); | |
24323 | } | |
24324 | else if (attr->form == DW_FORM_ref_sig8) | |
24325 | { | |
630ed6b9 | 24326 | return get_signatured_type (die, attr->as_signature (), cu); |
ac9ec31b DE |
24327 | } |
24328 | else | |
24329 | { | |
976ca316 | 24330 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 24331 | |
b98664d3 | 24332 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
24333 | " at %s [in module %s]"), |
24334 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
976ca316 | 24335 | objfile_name (per_objfile->objfile)); |
ac9ec31b DE |
24336 | return build_error_marker_type (cu, die); |
24337 | } | |
348e048f DE |
24338 | } |
24339 | ||
e5fe5e75 | 24340 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
24341 | |
24342 | static void | |
ab432490 SM |
24343 | load_full_type_unit (dwarf2_per_cu_data *per_cu, |
24344 | dwarf2_per_objfile *per_objfile) | |
348e048f | 24345 | { |
52dc124a | 24346 | struct signatured_type *sig_type; |
348e048f | 24347 | |
f4dc4d17 | 24348 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 24349 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 24350 | |
6721b2ec DE |
24351 | /* We have the per_cu, but we need the signatured_type. |
24352 | Fortunately this is an easy translation. */ | |
24353 | gdb_assert (per_cu->is_debug_types); | |
24354 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 24355 | |
7188ed02 | 24356 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 24357 | |
ab432490 | 24358 | read_signatured_type (sig_type, per_objfile); |
348e048f | 24359 | |
7188ed02 | 24360 | gdb_assert (per_objfile->get_cu (per_cu) != nullptr); |
348e048f DE |
24361 | } |
24362 | ||
3019eac3 DE |
24363 | /* Read in a signatured type and build its CU and DIEs. |
24364 | If the type is a stub for the real type in a DWO file, | |
24365 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
24366 | |
24367 | static void | |
ab432490 SM |
24368 | read_signatured_type (signatured_type *sig_type, |
24369 | dwarf2_per_objfile *per_objfile) | |
dee91e82 DE |
24370 | { |
24371 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 24372 | |
3019eac3 | 24373 | gdb_assert (per_cu->is_debug_types); |
7188ed02 | 24374 | gdb_assert (per_objfile->get_cu (per_cu) == nullptr); |
348e048f | 24375 | |
2e671100 | 24376 | cutu_reader reader (per_cu, per_objfile, nullptr, nullptr, false); |
c0ab21c2 TT |
24377 | |
24378 | if (!reader.dummy_p) | |
24379 | { | |
24380 | struct dwarf2_cu *cu = reader.cu; | |
24381 | const gdb_byte *info_ptr = reader.info_ptr; | |
24382 | ||
24383 | gdb_assert (cu->die_hash == NULL); | |
24384 | cu->die_hash = | |
24385 | htab_create_alloc_ex (cu->header.length / 12, | |
24386 | die_hash, | |
24387 | die_eq, | |
24388 | NULL, | |
24389 | &cu->comp_unit_obstack, | |
24390 | hashtab_obstack_allocate, | |
24391 | dummy_obstack_deallocate); | |
24392 | ||
3e225074 | 24393 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
24394 | reader.comp_unit_die->child |
24395 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
24396 | reader.comp_unit_die); | |
24397 | cu->dies = reader.comp_unit_die; | |
24398 | /* comp_unit_die is not stored in die_hash, no need. */ | |
24399 | ||
24400 | /* We try not to read any attributes in this function, because | |
24401 | not all CUs needed for references have been loaded yet, and | |
24402 | symbol table processing isn't initialized. But we have to | |
24403 | set the CU language, or we won't be able to build types | |
24404 | correctly. Similarly, if we do not read the producer, we can | |
24405 | not apply producer-specific interpretation. */ | |
24406 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
24407 | |
24408 | reader.keep (); | |
c0ab21c2 TT |
24409 | } |
24410 | ||
7ee85ab1 | 24411 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
24412 | } |
24413 | ||
c906108c SS |
24414 | /* Decode simple location descriptions. |
24415 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
24416 | the location and return the value. If COMPUTED is non-null, it is |
24417 | set to true to indicate that decoding was successful, and false | |
24418 | otherwise. If COMPUTED is null, then this function may emit a | |
24419 | complaint. */ | |
c906108c SS |
24420 | |
24421 | static CORE_ADDR | |
7d79de9a | 24422 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 24423 | { |
5e22e966 | 24424 | struct objfile *objfile = cu->per_objfile->objfile; |
56eb65bd SP |
24425 | size_t i; |
24426 | size_t size = blk->size; | |
d521ce57 | 24427 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
24428 | CORE_ADDR stack[64]; |
24429 | int stacki; | |
24430 | unsigned int bytes_read, unsnd; | |
24431 | gdb_byte op; | |
c906108c | 24432 | |
7d79de9a TT |
24433 | if (computed != nullptr) |
24434 | *computed = false; | |
24435 | ||
21ae7a4d JK |
24436 | i = 0; |
24437 | stacki = 0; | |
24438 | stack[stacki] = 0; | |
24439 | stack[++stacki] = 0; | |
24440 | ||
24441 | while (i < size) | |
24442 | { | |
24443 | op = data[i++]; | |
24444 | switch (op) | |
24445 | { | |
24446 | case DW_OP_lit0: | |
24447 | case DW_OP_lit1: | |
24448 | case DW_OP_lit2: | |
24449 | case DW_OP_lit3: | |
24450 | case DW_OP_lit4: | |
24451 | case DW_OP_lit5: | |
24452 | case DW_OP_lit6: | |
24453 | case DW_OP_lit7: | |
24454 | case DW_OP_lit8: | |
24455 | case DW_OP_lit9: | |
24456 | case DW_OP_lit10: | |
24457 | case DW_OP_lit11: | |
24458 | case DW_OP_lit12: | |
24459 | case DW_OP_lit13: | |
24460 | case DW_OP_lit14: | |
24461 | case DW_OP_lit15: | |
24462 | case DW_OP_lit16: | |
24463 | case DW_OP_lit17: | |
24464 | case DW_OP_lit18: | |
24465 | case DW_OP_lit19: | |
24466 | case DW_OP_lit20: | |
24467 | case DW_OP_lit21: | |
24468 | case DW_OP_lit22: | |
24469 | case DW_OP_lit23: | |
24470 | case DW_OP_lit24: | |
24471 | case DW_OP_lit25: | |
24472 | case DW_OP_lit26: | |
24473 | case DW_OP_lit27: | |
24474 | case DW_OP_lit28: | |
24475 | case DW_OP_lit29: | |
24476 | case DW_OP_lit30: | |
24477 | case DW_OP_lit31: | |
24478 | stack[++stacki] = op - DW_OP_lit0; | |
24479 | break; | |
f1bea926 | 24480 | |
21ae7a4d JK |
24481 | case DW_OP_reg0: |
24482 | case DW_OP_reg1: | |
24483 | case DW_OP_reg2: | |
24484 | case DW_OP_reg3: | |
24485 | case DW_OP_reg4: | |
24486 | case DW_OP_reg5: | |
24487 | case DW_OP_reg6: | |
24488 | case DW_OP_reg7: | |
24489 | case DW_OP_reg8: | |
24490 | case DW_OP_reg9: | |
24491 | case DW_OP_reg10: | |
24492 | case DW_OP_reg11: | |
24493 | case DW_OP_reg12: | |
24494 | case DW_OP_reg13: | |
24495 | case DW_OP_reg14: | |
24496 | case DW_OP_reg15: | |
24497 | case DW_OP_reg16: | |
24498 | case DW_OP_reg17: | |
24499 | case DW_OP_reg18: | |
24500 | case DW_OP_reg19: | |
24501 | case DW_OP_reg20: | |
24502 | case DW_OP_reg21: | |
24503 | case DW_OP_reg22: | |
24504 | case DW_OP_reg23: | |
24505 | case DW_OP_reg24: | |
24506 | case DW_OP_reg25: | |
24507 | case DW_OP_reg26: | |
24508 | case DW_OP_reg27: | |
24509 | case DW_OP_reg28: | |
24510 | case DW_OP_reg29: | |
24511 | case DW_OP_reg30: | |
24512 | case DW_OP_reg31: | |
24513 | stack[++stacki] = op - DW_OP_reg0; | |
24514 | if (i < size) | |
7d79de9a TT |
24515 | { |
24516 | if (computed == nullptr) | |
24517 | dwarf2_complex_location_expr_complaint (); | |
24518 | else | |
24519 | return 0; | |
24520 | } | |
21ae7a4d | 24521 | break; |
c906108c | 24522 | |
21ae7a4d JK |
24523 | case DW_OP_regx: |
24524 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
24525 | i += bytes_read; | |
24526 | stack[++stacki] = unsnd; | |
24527 | if (i < size) | |
7d79de9a TT |
24528 | { |
24529 | if (computed == nullptr) | |
24530 | dwarf2_complex_location_expr_complaint (); | |
24531 | else | |
24532 | return 0; | |
24533 | } | |
21ae7a4d | 24534 | break; |
c906108c | 24535 | |
21ae7a4d | 24536 | case DW_OP_addr: |
c8a7a66f TT |
24537 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
24538 | &bytes_read); | |
21ae7a4d JK |
24539 | i += bytes_read; |
24540 | break; | |
d53d4ac5 | 24541 | |
21ae7a4d JK |
24542 | case DW_OP_const1u: |
24543 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
24544 | i += 1; | |
24545 | break; | |
24546 | ||
24547 | case DW_OP_const1s: | |
24548 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
24549 | i += 1; | |
24550 | break; | |
24551 | ||
24552 | case DW_OP_const2u: | |
24553 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
24554 | i += 2; | |
24555 | break; | |
24556 | ||
24557 | case DW_OP_const2s: | |
24558 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
24559 | i += 2; | |
24560 | break; | |
d53d4ac5 | 24561 | |
21ae7a4d JK |
24562 | case DW_OP_const4u: |
24563 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
24564 | i += 4; | |
24565 | break; | |
24566 | ||
24567 | case DW_OP_const4s: | |
24568 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
24569 | i += 4; | |
24570 | break; | |
24571 | ||
585861ea JK |
24572 | case DW_OP_const8u: |
24573 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
24574 | i += 8; | |
24575 | break; | |
24576 | ||
21ae7a4d JK |
24577 | case DW_OP_constu: |
24578 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
24579 | &bytes_read); | |
24580 | i += bytes_read; | |
24581 | break; | |
24582 | ||
24583 | case DW_OP_consts: | |
24584 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
24585 | i += bytes_read; | |
24586 | break; | |
24587 | ||
24588 | case DW_OP_dup: | |
24589 | stack[stacki + 1] = stack[stacki]; | |
24590 | stacki++; | |
24591 | break; | |
24592 | ||
24593 | case DW_OP_plus: | |
24594 | stack[stacki - 1] += stack[stacki]; | |
24595 | stacki--; | |
24596 | break; | |
24597 | ||
24598 | case DW_OP_plus_uconst: | |
24599 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
24600 | &bytes_read); | |
24601 | i += bytes_read; | |
24602 | break; | |
24603 | ||
24604 | case DW_OP_minus: | |
24605 | stack[stacki - 1] -= stack[stacki]; | |
24606 | stacki--; | |
24607 | break; | |
24608 | ||
24609 | case DW_OP_deref: | |
24610 | /* If we're not the last op, then we definitely can't encode | |
24611 | this using GDB's address_class enum. This is valid for partial | |
24612 | global symbols, although the variable's address will be bogus | |
24613 | in the psymtab. */ | |
24614 | if (i < size) | |
7d79de9a TT |
24615 | { |
24616 | if (computed == nullptr) | |
24617 | dwarf2_complex_location_expr_complaint (); | |
24618 | else | |
24619 | return 0; | |
24620 | } | |
21ae7a4d JK |
24621 | break; |
24622 | ||
dda83cd7 | 24623 | case DW_OP_GNU_push_tls_address: |
4aa4e28b | 24624 | case DW_OP_form_tls_address: |
21ae7a4d JK |
24625 | /* The top of the stack has the offset from the beginning |
24626 | of the thread control block at which the variable is located. */ | |
24627 | /* Nothing should follow this operator, so the top of stack would | |
24628 | be returned. */ | |
24629 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
24630 | address will be bogus in the psymtab. Make it always at least |
24631 | non-zero to not look as a variable garbage collected by linker | |
24632 | which have DW_OP_addr 0. */ | |
21ae7a4d | 24633 | if (i < size) |
7d79de9a TT |
24634 | { |
24635 | if (computed == nullptr) | |
24636 | dwarf2_complex_location_expr_complaint (); | |
24637 | else | |
24638 | return 0; | |
24639 | } | |
585861ea | 24640 | stack[stacki]++; |
dda83cd7 | 24641 | break; |
21ae7a4d JK |
24642 | |
24643 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
24644 | if (computed != nullptr) |
24645 | return 0; | |
21ae7a4d JK |
24646 | break; |
24647 | ||
336d760d | 24648 | case DW_OP_addrx: |
3019eac3 | 24649 | case DW_OP_GNU_addr_index: |
49f6c839 | 24650 | case DW_OP_GNU_const_index: |
3019eac3 DE |
24651 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
24652 | &bytes_read); | |
24653 | i += bytes_read; | |
24654 | break; | |
24655 | ||
21ae7a4d | 24656 | default: |
7d79de9a TT |
24657 | if (computed == nullptr) |
24658 | { | |
24659 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 24660 | |
7d79de9a TT |
24661 | if (name) |
24662 | complaint (_("unsupported stack op: '%s'"), | |
24663 | name); | |
24664 | else | |
24665 | complaint (_("unsupported stack op: '%02x'"), | |
24666 | op); | |
24667 | } | |
21ae7a4d JK |
24668 | |
24669 | return (stack[stacki]); | |
d53d4ac5 | 24670 | } |
3c6e0cb3 | 24671 | |
21ae7a4d | 24672 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
dda83cd7 | 24673 | outside of the allocated space. Also enforce minimum>0. */ |
21ae7a4d JK |
24674 | if (stacki >= ARRAY_SIZE (stack) - 1) |
24675 | { | |
7d79de9a TT |
24676 | if (computed == nullptr) |
24677 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
24678 | return 0; |
24679 | } | |
24680 | ||
24681 | if (stacki <= 0) | |
24682 | { | |
7d79de9a TT |
24683 | if (computed == nullptr) |
24684 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
24685 | return 0; |
24686 | } | |
24687 | } | |
7d79de9a TT |
24688 | |
24689 | if (computed != nullptr) | |
24690 | *computed = true; | |
21ae7a4d | 24691 | return (stack[stacki]); |
c906108c SS |
24692 | } |
24693 | ||
24694 | /* memory allocation interface */ | |
24695 | ||
c906108c | 24696 | static struct dwarf_block * |
7b5a2f43 | 24697 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 24698 | { |
8d749320 | 24699 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
24700 | } |
24701 | ||
c906108c | 24702 | static struct die_info * |
b60c80d6 | 24703 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
24704 | { |
24705 | struct die_info *die; | |
b60c80d6 DJ |
24706 | size_t size = sizeof (struct die_info); |
24707 | ||
24708 | if (num_attrs > 1) | |
24709 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 24710 | |
b60c80d6 | 24711 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
24712 | memset (die, 0, sizeof (struct die_info)); |
24713 | return (die); | |
24714 | } | |
2e276125 JB |
24715 | |
24716 | \f | |
a036ba48 | 24717 | |
c90ec28a | 24718 | /* Macro support. */ |
cf2c3c16 | 24719 | |
9eac9650 TT |
24720 | /* An overload of dwarf_decode_macros that finds the correct section |
24721 | and ensures it is read in before calling the other overload. */ | |
24722 | ||
24723 | static void | |
24724 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
24725 | int section_is_gnu) | |
24726 | { | |
976ca316 SM |
24727 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24728 | struct objfile *objfile = per_objfile->objfile; | |
5a0e026f | 24729 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
24730 | unsigned int offset_size = cu->header.offset_size; |
24731 | struct dwarf2_section_info *section; | |
24732 | const char *section_name; | |
24733 | ||
24734 | if (cu->dwo_unit != nullptr) | |
24735 | { | |
24736 | if (section_is_gnu) | |
24737 | { | |
24738 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24739 | section_name = ".debug_macro.dwo"; | |
24740 | } | |
24741 | else | |
24742 | { | |
24743 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24744 | section_name = ".debug_macinfo.dwo"; | |
24745 | } | |
24746 | } | |
24747 | else | |
24748 | { | |
24749 | if (section_is_gnu) | |
24750 | { | |
976ca316 | 24751 | section = &per_objfile->per_bfd->macro; |
9eac9650 TT |
24752 | section_name = ".debug_macro"; |
24753 | } | |
24754 | else | |
24755 | { | |
976ca316 | 24756 | section = &per_objfile->per_bfd->macinfo; |
9eac9650 TT |
24757 | section_name = ".debug_macinfo"; |
24758 | } | |
24759 | } | |
24760 | ||
24761 | section->read (objfile); | |
24762 | if (section->buffer == nullptr) | |
24763 | { | |
24764 | complaint (_("missing %s section"), section_name); | |
24765 | return; | |
24766 | } | |
24767 | ||
24768 | buildsym_compunit *builder = cu->get_builder (); | |
24769 | ||
048fde1e | 24770 | struct dwarf2_section_info *str_offsets_section; |
24771 | struct dwarf2_section_info *str_section; | |
24772 | ULONGEST str_offsets_base; | |
24773 | ||
24774 | if (cu->dwo_unit != nullptr) | |
24775 | { | |
24776 | str_offsets_section = &cu->dwo_unit->dwo_file | |
24777 | ->sections.str_offsets; | |
24778 | str_section = &cu->dwo_unit->dwo_file->sections.str; | |
24779 | str_offsets_base = cu->header.addr_size; | |
24780 | } | |
24781 | else | |
24782 | { | |
24783 | str_offsets_section = &per_objfile->per_bfd->str_offsets; | |
24784 | str_section = &per_objfile->per_bfd->str; | |
24785 | str_offsets_base = *cu->str_offsets_base; | |
24786 | } | |
24787 | ||
976ca316 | 24788 | dwarf_decode_macros (per_objfile, builder, section, lh, |
048fde1e | 24789 | offset_size, offset, str_section, str_offsets_section, |
24790 | str_offsets_base, section_is_gnu); | |
9eac9650 TT |
24791 | } |
24792 | ||
3019eac3 DE |
24793 | /* Return the .debug_loc section to use for CU. |
24794 | For DWO files use .debug_loc.dwo. */ | |
24795 | ||
24796 | static struct dwarf2_section_info * | |
24797 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24798 | { | |
976ca316 | 24799 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
ed2dc618 | 24800 | |
3019eac3 | 24801 | if (cu->dwo_unit) |
43988095 JK |
24802 | { |
24803 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 24804 | |
43988095 JK |
24805 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
24806 | } | |
976ca316 SM |
24807 | return (cu->header.version >= 5 ? &per_objfile->per_bfd->loclists |
24808 | : &per_objfile->per_bfd->loc); | |
3019eac3 DE |
24809 | } |
24810 | ||
d0ce17d8 CT |
24811 | /* Return the .debug_rnglists section to use for CU. */ |
24812 | static struct dwarf2_section_info * | |
24813 | cu_debug_rnglists_section (struct dwarf2_cu *cu, dwarf_tag tag) | |
24814 | { | |
24815 | if (cu->header.version < 5) | |
24816 | error (_(".debug_rnglists section cannot be used in DWARF %d"), | |
24817 | cu->header.version); | |
24818 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; | |
24819 | ||
24820 | /* Make sure we read the .debug_rnglists section from the file that | |
24821 | contains the DW_AT_ranges attribute we are reading. Normally that | |
24822 | would be the .dwo file, if there is one. However for DW_TAG_compile_unit | |
24823 | or DW_TAG_skeleton unit, we always want to read from objfile/linked | |
24824 | program. */ | |
24825 | if (cu->dwo_unit != nullptr | |
24826 | && tag != DW_TAG_compile_unit | |
24827 | && tag != DW_TAG_skeleton_unit) | |
24828 | { | |
24829 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
24830 | ||
24831 | if (sections->rnglists.size > 0) | |
24832 | return §ions->rnglists; | |
24833 | else | |
24834 | error (_(".debug_rnglists section is missing from .dwo file.")); | |
24835 | } | |
24836 | return &dwarf2_per_objfile->per_bfd->rnglists; | |
24837 | } | |
24838 | ||
8cf6f0b1 TT |
24839 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24840 | ||
24841 | static void | |
24842 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24843 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24844 | const struct attribute *attr) |
8cf6f0b1 | 24845 | { |
976ca316 | 24846 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
3019eac3 DE |
24847 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24848 | ||
976ca316 | 24849 | section->read (per_objfile->objfile); |
8cf6f0b1 | 24850 | |
976ca316 | 24851 | baton->per_objfile = per_objfile; |
8cf6f0b1 TT |
24852 | baton->per_cu = cu->per_cu; |
24853 | gdb_assert (baton->per_cu); | |
24854 | /* We don't know how long the location list is, but make sure we | |
24855 | don't run off the edge of the section. */ | |
d4df075e TT |
24856 | baton->size = section->size - attr->as_unsigned (); |
24857 | baton->data = section->buffer + attr->as_unsigned (); | |
2b24b6e4 TT |
24858 | if (cu->base_address.has_value ()) |
24859 | baton->base_address = *cu->base_address; | |
24860 | else | |
24861 | baton->base_address = 0; | |
f664829e | 24862 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24863 | } |
24864 | ||
4c2df51b | 24865 | static void |
ff39bb5e | 24866 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24867 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24868 | { |
976ca316 SM |
24869 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
24870 | struct objfile *objfile = per_objfile->objfile; | |
3019eac3 | 24871 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24872 | |
cd6c91b4 | 24873 | if (attr->form_is_section_offset () |
3019eac3 | 24874 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24875 | the section. If so, fall through to the complaint in the |
24876 | other branch. */ | |
d4df075e | 24877 | && attr->as_unsigned () < section->get_size (objfile)) |
4c2df51b | 24878 | { |
0d53c4c4 | 24879 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24880 | |
8d749320 | 24881 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24882 | |
8cf6f0b1 | 24883 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24884 | |
2b24b6e4 | 24885 | if (!cu->base_address.has_value ()) |
b98664d3 | 24886 | complaint (_("Location list used without " |
3e43a32a | 24887 | "specifying the CU base address.")); |
4c2df51b | 24888 | |
f1e6e072 TT |
24889 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24890 | ? dwarf2_loclist_block_index | |
24891 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24892 | SYMBOL_LOCATION_BATON (sym) = baton; |
24893 | } | |
24894 | else | |
24895 | { | |
24896 | struct dwarf2_locexpr_baton *baton; | |
24897 | ||
8d749320 | 24898 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
976ca316 | 24899 | baton->per_objfile = per_objfile; |
ae0d2f24 UW |
24900 | baton->per_cu = cu->per_cu; |
24901 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 24902 | |
4fc6c0d5 | 24903 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
24904 | { |
24905 | /* Note that we're just copying the block's data pointer | |
24906 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24907 | info_buffer for SYM's objfile; right now we never release |
24908 | that buffer, but when we do clean up properly this may | |
24909 | need to change. */ | |
9d2246fc TT |
24910 | struct dwarf_block *block = attr->as_block (); |
24911 | baton->size = block->size; | |
24912 | baton->data = block->data; | |
0d53c4c4 DJ |
24913 | } |
24914 | else | |
24915 | { | |
24916 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 24917 | sym->natural_name ()); |
0d53c4c4 | 24918 | baton->size = 0; |
0d53c4c4 | 24919 | } |
6e70227d | 24920 | |
f1e6e072 TT |
24921 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24922 | ? dwarf2_locexpr_block_index | |
24923 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24924 | SYMBOL_LOCATION_BATON (sym) = baton; |
24925 | } | |
4c2df51b | 24926 | } |
6502dd73 | 24927 | |
2e6a9f79 | 24928 | /* See read.h. */ |
96408a79 | 24929 | |
2e6a9f79 SM |
24930 | const comp_unit_head * |
24931 | dwarf2_per_cu_data::get_header () const | |
96408a79 | 24932 | { |
2e6a9f79 SM |
24933 | if (!m_header_read_in) |
24934 | { | |
24935 | const gdb_byte *info_ptr | |
24936 | = this->section->buffer + to_underlying (this->sect_off); | |
96408a79 | 24937 | |
2e6a9f79 | 24938 | memset (&m_header, 0, sizeof (m_header)); |
96408a79 | 24939 | |
2e6a9f79 SM |
24940 | read_comp_unit_head (&m_header, info_ptr, this->section, |
24941 | rcuh_kind::COMPILE); | |
a9f172c6 TT |
24942 | |
24943 | m_header_read_in = true; | |
2e6a9f79 | 24944 | } |
96408a79 | 24945 | |
2e6a9f79 | 24946 | return &m_header; |
96408a79 SA |
24947 | } |
24948 | ||
09ba997f | 24949 | /* See read.h. */ |
ae0d2f24 | 24950 | |
98714339 | 24951 | int |
09ba997f | 24952 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 24953 | { |
2e6a9f79 | 24954 | return this->get_header ()->addr_size; |
ae0d2f24 UW |
24955 | } |
24956 | ||
09ba997f | 24957 | /* See read.h. */ |
9eae7c52 TT |
24958 | |
24959 | int | |
09ba997f | 24960 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 24961 | { |
2e6a9f79 | 24962 | return this->get_header ()->offset_size; |
96408a79 SA |
24963 | } |
24964 | ||
09ba997f | 24965 | /* See read.h. */ |
96408a79 SA |
24966 | |
24967 | int | |
09ba997f | 24968 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 | 24969 | { |
2e6a9f79 | 24970 | const comp_unit_head *header = this->get_header (); |
96408a79 | 24971 | |
2e6a9f79 SM |
24972 | if (header->version == 2) |
24973 | return header->addr_size; | |
96408a79 | 24974 | else |
2e6a9f79 | 24975 | return header->offset_size; |
181cebd4 JK |
24976 | } |
24977 | ||
09ba997f | 24978 | /* See read.h. */ |
9aa1f1e3 | 24979 | |
09ba997f | 24980 | struct type * |
293e7e51 | 24981 | dwarf2_cu::addr_type () const |
9a49df9d | 24982 | { |
293e7e51 | 24983 | struct objfile *objfile = this->per_objfile->objfile; |
9a49df9d AB |
24984 | struct type *void_type = objfile_type (objfile)->builtin_void; |
24985 | struct type *addr_type = lookup_pointer_type (void_type); | |
293e7e51 | 24986 | int addr_size = this->per_cu->addr_size (); |
9a49df9d AB |
24987 | |
24988 | if (TYPE_LENGTH (addr_type) == addr_size) | |
24989 | return addr_type; | |
24990 | ||
c6d940a9 | 24991 | addr_type = addr_sized_int_type (addr_type->is_unsigned ()); |
9a49df9d AB |
24992 | return addr_type; |
24993 | } | |
24994 | ||
22b6cd70 TT |
24995 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
24996 | the index of the result, and that searches a vector. It will | |
24997 | return a result even if the offset in question does not actually | |
24998 | occur in any CU. This is separate so that it can be unit | |
24999 | tested. */ | |
ae038cb0 | 25000 | |
22b6cd70 TT |
25001 | static int |
25002 | dwarf2_find_containing_comp_unit | |
25003 | (sect_offset sect_off, | |
25004 | unsigned int offset_in_dwz, | |
25005 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 25006 | { |
ae038cb0 DJ |
25007 | int low, high; |
25008 | ||
ae038cb0 | 25009 | low = 0; |
22b6cd70 | 25010 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
25011 | while (high > low) |
25012 | { | |
36586728 | 25013 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 25014 | int mid = low + (high - low) / 2; |
9a619af0 | 25015 | |
22b6cd70 | 25016 | mid_cu = all_comp_units[mid]; |
36586728 | 25017 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 25018 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 25019 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
25020 | high = mid; |
25021 | else | |
25022 | low = mid + 1; | |
25023 | } | |
25024 | gdb_assert (low == high); | |
22b6cd70 TT |
25025 | return low; |
25026 | } | |
25027 | ||
25028 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
25029 | the DIE at OFFSET. Raises an error on failure. */ | |
25030 | ||
25031 | static struct dwarf2_per_cu_data * | |
25032 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
25033 | unsigned int offset_in_dwz, | |
976ca316 | 25034 | dwarf2_per_objfile *per_objfile) |
22b6cd70 | 25035 | { |
976ca316 SM |
25036 | int low = dwarf2_find_containing_comp_unit |
25037 | (sect_off, offset_in_dwz, per_objfile->per_bfd->all_comp_units); | |
25038 | dwarf2_per_cu_data *this_cu = per_objfile->per_bfd->all_comp_units[low]; | |
22b6cd70 | 25039 | |
45b8ae0c | 25040 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 25041 | { |
36586728 | 25042 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 25043 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
25044 | "offset %s [in module %s]"), |
25045 | sect_offset_str (sect_off), | |
976ca316 | 25046 | bfd_get_filename (per_objfile->objfile->obfd)); |
10b3939b | 25047 | |
976ca316 | 25048 | gdb_assert (per_objfile->per_bfd->all_comp_units[low-1]->sect_off |
9c541725 | 25049 | <= sect_off); |
976ca316 | 25050 | return per_objfile->per_bfd->all_comp_units[low-1]; |
ae038cb0 DJ |
25051 | } |
25052 | else | |
25053 | { | |
976ca316 | 25054 | if (low == per_objfile->per_bfd->all_comp_units.size () - 1 |
9c541725 | 25055 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 25056 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 25057 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
25058 | return this_cu; |
25059 | } | |
25060 | } | |
25061 | ||
22b6cd70 TT |
25062 | #if GDB_SELF_TEST |
25063 | ||
25064 | namespace selftests { | |
25065 | namespace find_containing_comp_unit { | |
25066 | ||
25067 | static void | |
25068 | run_test () | |
25069 | { | |
25070 | struct dwarf2_per_cu_data one {}; | |
25071 | struct dwarf2_per_cu_data two {}; | |
25072 | struct dwarf2_per_cu_data three {}; | |
25073 | struct dwarf2_per_cu_data four {}; | |
25074 | ||
25075 | one.length = 5; | |
25076 | two.sect_off = sect_offset (one.length); | |
25077 | two.length = 7; | |
25078 | ||
25079 | three.length = 5; | |
25080 | three.is_dwz = 1; | |
25081 | four.sect_off = sect_offset (three.length); | |
25082 | four.length = 7; | |
25083 | four.is_dwz = 1; | |
25084 | ||
25085 | std::vector<dwarf2_per_cu_data *> units; | |
25086 | units.push_back (&one); | |
25087 | units.push_back (&two); | |
25088 | units.push_back (&three); | |
25089 | units.push_back (&four); | |
25090 | ||
25091 | int result; | |
25092 | ||
25093 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
25094 | SELF_CHECK (units[result] == &one); | |
25095 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
25096 | SELF_CHECK (units[result] == &one); | |
25097 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
25098 | SELF_CHECK (units[result] == &two); | |
25099 | ||
25100 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
25101 | SELF_CHECK (units[result] == &three); | |
25102 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
25103 | SELF_CHECK (units[result] == &three); | |
25104 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
25105 | SELF_CHECK (units[result] == &four); | |
25106 | } | |
25107 | ||
25108 | } | |
25109 | } | |
25110 | ||
25111 | #endif /* GDB_SELF_TEST */ | |
25112 | ||
9e021579 | 25113 | /* Initialize dwarf2_cu to read PER_CU, in the context of PER_OBJFILE. */ |
93311388 | 25114 | |
9e021579 SM |
25115 | dwarf2_cu::dwarf2_cu (dwarf2_per_cu_data *per_cu, |
25116 | dwarf2_per_objfile *per_objfile) | |
25117 | : per_cu (per_cu), | |
25118 | per_objfile (per_objfile), | |
9068261f AB |
25119 | mark (false), |
25120 | has_loclist (false), | |
25121 | checked_producer (false), | |
25122 | producer_is_gxx_lt_4_6 (false), | |
25123 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 25124 | producer_is_icc (false), |
9068261f | 25125 | producer_is_icc_lt_14 (false), |
c258c396 | 25126 | producer_is_codewarrior (false), |
9068261f | 25127 | processing_has_namespace_info (false) |
93311388 | 25128 | { |
9816fde3 JK |
25129 | } |
25130 | ||
25131 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
25132 | ||
25133 | static void | |
95554aad TT |
25134 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
25135 | enum language pretend_language) | |
9816fde3 JK |
25136 | { |
25137 | struct attribute *attr; | |
25138 | ||
25139 | /* Set the language we're debugging. */ | |
25140 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 25141 | if (attr != nullptr) |
529908cb | 25142 | set_cu_language (attr->constant_value (0), cu); |
9816fde3 | 25143 | else |
9cded63f | 25144 | { |
95554aad | 25145 | cu->language = pretend_language; |
9cded63f TT |
25146 | cu->language_defn = language_def (cu->language); |
25147 | } | |
dee91e82 | 25148 | |
7d45c7c3 | 25149 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
25150 | } |
25151 | ||
7188ed02 | 25152 | /* See read.h. */ |
ae038cb0 | 25153 | |
7188ed02 SM |
25154 | dwarf2_cu * |
25155 | dwarf2_per_objfile::get_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 25156 | { |
7188ed02 SM |
25157 | auto it = m_dwarf2_cus.find (per_cu); |
25158 | if (it == m_dwarf2_cus.end ()) | |
25159 | return nullptr; | |
ae038cb0 | 25160 | |
7188ed02 SM |
25161 | return it->second; |
25162 | } | |
25163 | ||
25164 | /* See read.h. */ | |
25165 | ||
25166 | void | |
25167 | dwarf2_per_objfile::set_cu (dwarf2_per_cu_data *per_cu, dwarf2_cu *cu) | |
25168 | { | |
25169 | gdb_assert (this->get_cu (per_cu) == nullptr); | |
25170 | ||
25171 | m_dwarf2_cus[per_cu] = cu; | |
25172 | } | |
25173 | ||
25174 | /* See read.h. */ | |
25175 | ||
25176 | void | |
25177 | dwarf2_per_objfile::age_comp_units () | |
25178 | { | |
17e593e9 SM |
25179 | dwarf_read_debug_printf_v ("running"); |
25180 | ||
08ac5771 SM |
25181 | /* This is not expected to be called in the middle of CU expansion. There is |
25182 | an invariant that if a CU is in the CUs-to-expand queue, its DIEs are | |
25183 | loaded in memory. Calling age_comp_units while the queue is in use could | |
25184 | make us free the DIEs for a CU that is in the queue and therefore break | |
25185 | that invariant. */ | |
25186 | gdb_assert (!this->per_bfd->queue.has_value ()); | |
25187 | ||
7188ed02 SM |
25188 | /* Start by clearing all marks. */ |
25189 | for (auto pair : m_dwarf2_cus) | |
25190 | pair.second->mark = false; | |
25191 | ||
25192 | /* Traverse all CUs, mark them and their dependencies if used recently | |
25193 | enough. */ | |
25194 | for (auto pair : m_dwarf2_cus) | |
ae038cb0 | 25195 | { |
7188ed02 SM |
25196 | dwarf2_cu *cu = pair.second; |
25197 | ||
25198 | cu->last_used++; | |
25199 | if (cu->last_used <= dwarf_max_cache_age) | |
25200 | dwarf2_mark (cu); | |
ae038cb0 DJ |
25201 | } |
25202 | ||
7188ed02 SM |
25203 | /* Delete all CUs still not marked. */ |
25204 | for (auto it = m_dwarf2_cus.begin (); it != m_dwarf2_cus.end ();) | |
ae038cb0 | 25205 | { |
7188ed02 | 25206 | dwarf2_cu *cu = it->second; |
ae038cb0 | 25207 | |
7188ed02 | 25208 | if (!cu->mark) |
ae038cb0 | 25209 | { |
17e593e9 SM |
25210 | dwarf_read_debug_printf_v ("deleting old CU %s", |
25211 | sect_offset_str (cu->per_cu->sect_off)); | |
7188ed02 SM |
25212 | delete cu; |
25213 | it = m_dwarf2_cus.erase (it); | |
ae038cb0 DJ |
25214 | } |
25215 | else | |
7188ed02 | 25216 | it++; |
ae038cb0 DJ |
25217 | } |
25218 | } | |
25219 | ||
7188ed02 | 25220 | /* See read.h. */ |
ae038cb0 | 25221 | |
7188ed02 SM |
25222 | void |
25223 | dwarf2_per_objfile::remove_cu (dwarf2_per_cu_data *per_cu) | |
ae038cb0 | 25224 | { |
7188ed02 SM |
25225 | auto it = m_dwarf2_cus.find (per_cu); |
25226 | if (it == m_dwarf2_cus.end ()) | |
25227 | return; | |
ae038cb0 | 25228 | |
7188ed02 | 25229 | delete it->second; |
ae038cb0 | 25230 | |
7188ed02 SM |
25231 | m_dwarf2_cus.erase (it); |
25232 | } | |
ae038cb0 | 25233 | |
7188ed02 SM |
25234 | dwarf2_per_objfile::~dwarf2_per_objfile () |
25235 | { | |
25236 | remove_all_cus (); | |
ae038cb0 DJ |
25237 | } |
25238 | ||
dee91e82 DE |
25239 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25240 | We store these in a hash table separate from the DIEs, and preserve them | |
25241 | when the DIEs are flushed out of cache. | |
25242 | ||
25243 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25244 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25245 | or the type may come from a DWO file. Furthermore, while it's more logical |
25246 | to use per_cu->section+offset, with Fission the section with the data is in | |
25247 | the DWO file but we don't know that section at the point we need it. | |
25248 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25249 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25250 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25251 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25252 | |
dee91e82 | 25253 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25254 | { |
dee91e82 | 25255 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25256 | sect_offset sect_off; |
1c379e20 DJ |
25257 | struct type *type; |
25258 | }; | |
25259 | ||
dee91e82 | 25260 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25261 | |
25262 | static hashval_t | |
dee91e82 | 25263 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25264 | { |
9a3c8263 SM |
25265 | const struct dwarf2_per_cu_offset_and_type *ofs |
25266 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25267 | |
9c541725 | 25268 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25269 | } |
25270 | ||
dee91e82 | 25271 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25272 | |
25273 | static int | |
dee91e82 | 25274 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25275 | { |
9a3c8263 SM |
25276 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25277 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25278 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25279 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25280 | |
dee91e82 | 25281 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25282 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25283 | } |
25284 | ||
25285 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25286 | table if necessary. For convenience, return TYPE. |
25287 | ||
25288 | The DIEs reading must have careful ordering to: | |
85102364 | 25289 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
25290 | reading current DIE. |
25291 | * Not trying to dereference contents of still incompletely read in types | |
25292 | while reading in other DIEs. | |
25293 | * Enable referencing still incompletely read in types just by a pointer to | |
25294 | the type without accessing its fields. | |
25295 | ||
25296 | Therefore caller should follow these rules: | |
25297 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25298 | before building the type and calling set_die_type. | |
e71ec853 | 25299 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25300 | possible before fetching more types to complete the current type. |
25301 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25302 | |
f792889a | 25303 | static struct type * |
57567375 TT |
25304 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
25305 | bool skip_data_location) | |
1c379e20 | 25306 | { |
976ca316 | 25307 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
dee91e82 | 25308 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
976ca316 | 25309 | struct objfile *objfile = per_objfile->objfile; |
3cdcd0ce JB |
25310 | struct attribute *attr; |
25311 | struct dynamic_prop prop; | |
1c379e20 | 25312 | |
b4ba55a1 JB |
25313 | /* For Ada types, make sure that the gnat-specific data is always |
25314 | initialized (if not already set). There are a few types where | |
25315 | we should not be doing so, because the type-specific area is | |
25316 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25317 | where the type-specific area is used to store the floatformat). | |
25318 | But this is not a problem, because the gnat-specific information | |
25319 | is actually not needed for these types. */ | |
25320 | if (need_gnat_info (cu) | |
78134374 SM |
25321 | && type->code () != TYPE_CODE_FUNC |
25322 | && type->code () != TYPE_CODE_FLT | |
25323 | && type->code () != TYPE_CODE_METHODPTR | |
25324 | && type->code () != TYPE_CODE_MEMBERPTR | |
25325 | && type->code () != TYPE_CODE_METHOD | |
09584414 | 25326 | && type->code () != TYPE_CODE_FIXED_POINT |
b4ba55a1 JB |
25327 | && !HAVE_GNAT_AUX_INFO (type)) |
25328 | INIT_GNAT_SPECIFIC (type); | |
25329 | ||
3f2f83dd KB |
25330 | /* Read DW_AT_allocated and set in type. */ |
25331 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
9cdf9820 | 25332 | if (attr != NULL) |
3f2f83dd | 25333 | { |
293e7e51 | 25334 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 25335 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 25336 | type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); |
3f2f83dd | 25337 | } |
3f2f83dd KB |
25338 | |
25339 | /* Read DW_AT_associated and set in type. */ | |
25340 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
9cdf9820 | 25341 | if (attr != NULL) |
3f2f83dd | 25342 | { |
293e7e51 | 25343 | struct type *prop_type = cu->addr_sized_int_type (false); |
9a49df9d | 25344 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
dda83cd7 | 25345 | type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); |
3f2f83dd | 25346 | } |
3f2f83dd | 25347 | |
3cdcd0ce | 25348 | /* Read DW_AT_data_location and set in type. */ |
57567375 TT |
25349 | if (!skip_data_location) |
25350 | { | |
25351 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
25352 | if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) | |
25353 | type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); | |
25354 | } | |
3cdcd0ce | 25355 | |
976ca316 SM |
25356 | if (per_objfile->die_type_hash == NULL) |
25357 | per_objfile->die_type_hash | |
0335378b TT |
25358 | = htab_up (htab_create_alloc (127, |
25359 | per_cu_offset_and_type_hash, | |
25360 | per_cu_offset_and_type_eq, | |
25361 | NULL, xcalloc, xfree)); | |
1c379e20 | 25362 | |
dee91e82 | 25363 | ofs.per_cu = cu->per_cu; |
9c541725 | 25364 | ofs.sect_off = die->sect_off; |
1c379e20 | 25365 | ofs.type = type; |
dee91e82 | 25366 | slot = (struct dwarf2_per_cu_offset_and_type **) |
976ca316 | 25367 | htab_find_slot (per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 25368 | if (*slot) |
b98664d3 | 25369 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 25370 | sect_offset_str (die->sect_off)); |
8d749320 SM |
25371 | *slot = XOBNEW (&objfile->objfile_obstack, |
25372 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25373 | **slot = ofs; |
f792889a | 25374 | return type; |
1c379e20 DJ |
25375 | } |
25376 | ||
9c541725 | 25377 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25378 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25379 | |
25380 | static struct type * | |
9c541725 | 25381 | get_die_type_at_offset (sect_offset sect_off, |
aa66c379 | 25382 | dwarf2_per_cu_data *per_cu, |
976ca316 | 25383 | dwarf2_per_objfile *per_objfile) |
1c379e20 | 25384 | { |
dee91e82 | 25385 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 25386 | |
976ca316 | 25387 | if (per_objfile->die_type_hash == NULL) |
f792889a | 25388 | return NULL; |
1c379e20 | 25389 | |
dee91e82 | 25390 | ofs.per_cu = per_cu; |
9c541725 | 25391 | ofs.sect_off = sect_off; |
9a3c8263 | 25392 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
976ca316 | 25393 | htab_find (per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
25394 | if (slot) |
25395 | return slot->type; | |
25396 | else | |
25397 | return NULL; | |
25398 | } | |
25399 | ||
02142a6c | 25400 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25401 | or return NULL if DIE does not have a saved type. */ |
25402 | ||
25403 | static struct type * | |
25404 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25405 | { | |
aa66c379 | 25406 | return get_die_type_at_offset (die->sect_off, cu->per_cu, cu->per_objfile); |
673bfd45 DE |
25407 | } |
25408 | ||
10b3939b DJ |
25409 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25410 | ||
25411 | static void | |
25412 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25413 | struct dwarf2_per_cu_data *ref_per_cu) | |
25414 | { | |
25415 | void **slot; | |
25416 | ||
25417 | if (cu->dependencies == NULL) | |
25418 | cu->dependencies | |
25419 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25420 | NULL, &cu->comp_unit_obstack, | |
25421 | hashtab_obstack_allocate, | |
25422 | dummy_obstack_deallocate); | |
25423 | ||
25424 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25425 | if (*slot == NULL) | |
25426 | *slot = ref_per_cu; | |
25427 | } | |
1c379e20 | 25428 | |
f504f079 DE |
25429 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25430 | Set the mark field in every compilation unit in the | |
7188ed02 SM |
25431 | cache that we must keep because we are keeping CU. |
25432 | ||
25433 | DATA is the dwarf2_per_objfile object in which to look up CUs. */ | |
ae038cb0 | 25434 | |
10b3939b DJ |
25435 | static int |
25436 | dwarf2_mark_helper (void **slot, void *data) | |
25437 | { | |
7188ed02 SM |
25438 | dwarf2_per_cu_data *per_cu = (dwarf2_per_cu_data *) *slot; |
25439 | dwarf2_per_objfile *per_objfile = (dwarf2_per_objfile *) data; | |
25440 | dwarf2_cu *cu = per_objfile->get_cu (per_cu); | |
d07ed419 JK |
25441 | |
25442 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25443 | reading of the chain. As such dependencies remain valid it is not much | |
25444 | useful to track and undo them during QUIT cleanups. */ | |
7188ed02 | 25445 | if (cu == nullptr) |
d07ed419 JK |
25446 | return 1; |
25447 | ||
7188ed02 | 25448 | if (cu->mark) |
10b3939b | 25449 | return 1; |
10b3939b | 25450 | |
7188ed02 SM |
25451 | cu->mark = true; |
25452 | ||
25453 | if (cu->dependencies != nullptr) | |
25454 | htab_traverse (cu->dependencies, dwarf2_mark_helper, per_objfile); | |
10b3939b DJ |
25455 | |
25456 | return 1; | |
25457 | } | |
25458 | ||
f504f079 DE |
25459 | /* Set the mark field in CU and in every other compilation unit in the |
25460 | cache that we must keep because we are keeping CU. */ | |
25461 | ||
ae038cb0 DJ |
25462 | static void |
25463 | dwarf2_mark (struct dwarf2_cu *cu) | |
25464 | { | |
25465 | if (cu->mark) | |
25466 | return; | |
7188ed02 | 25467 | |
9068261f | 25468 | cu->mark = true; |
ae038cb0 | 25469 | |
7188ed02 SM |
25470 | if (cu->dependencies != nullptr) |
25471 | htab_traverse (cu->dependencies, dwarf2_mark_helper, cu->per_objfile); | |
72bf9492 DJ |
25472 | } |
25473 | ||
72bf9492 DJ |
25474 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25475 | is its offset in .debug_info for this objfile. */ | |
25476 | ||
25477 | static hashval_t | |
25478 | partial_die_hash (const void *item) | |
25479 | { | |
9a3c8263 SM |
25480 | const struct partial_die_info *part_die |
25481 | = (const struct partial_die_info *) item; | |
9a619af0 | 25482 | |
9c541725 | 25483 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25484 | } |
25485 | ||
25486 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25487 | are equal if they have the same offset. */ | |
25488 | ||
25489 | static int | |
25490 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25491 | { | |
9a3c8263 SM |
25492 | const struct partial_die_info *part_die_lhs |
25493 | = (const struct partial_die_info *) item_lhs; | |
25494 | const struct partial_die_info *part_die_rhs | |
25495 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25496 | |
9c541725 | 25497 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25498 | } |
25499 | ||
3c3bb058 AB |
25500 | struct cmd_list_element *set_dwarf_cmdlist; |
25501 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 25502 | |
9291a0cd | 25503 | static void |
cd4fb1b2 SM |
25504 | show_check_physname (struct ui_file *file, int from_tty, |
25505 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25506 | { |
cd4fb1b2 SM |
25507 | fprintf_filtered (file, |
25508 | _("Whether to check \"physname\" is %s.\n"), | |
25509 | value); | |
9291a0cd TT |
25510 | } |
25511 | ||
6c265988 | 25512 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 25513 | void |
6c265988 | 25514 | _initialize_dwarf2_read () |
9291a0cd | 25515 | { |
0743fc83 | 25516 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 25517 | Set DWARF specific variables.\n\ |
590042fc | 25518 | Configure DWARF variables such as the cache size."), |
0743fc83 TT |
25519 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
25520 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 25521 | |
0743fc83 | 25522 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
25523 | Show DWARF specific variables.\n\ |
25524 | Show DWARF variables such as the cache size."), | |
0743fc83 TT |
25525 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
25526 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 25527 | |
cd4fb1b2 SM |
25528 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25529 | &dwarf_max_cache_age, _("\ | |
25530 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25531 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25532 | A higher limit means that cached compilation units will be stored\n\ | |
25533 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25534 | caching, which can slow down startup."), | |
25535 | NULL, | |
25536 | show_dwarf_max_cache_age, | |
25537 | &set_dwarf_cmdlist, | |
25538 | &show_dwarf_cmdlist); | |
156942c7 | 25539 | |
cd4fb1b2 SM |
25540 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25541 | Set debugging of the DWARF reader."), _("\ | |
25542 | Show debugging of the DWARF reader."), _("\ | |
25543 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25544 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25545 | information. A value greater than 1 provides more verbose information."), | |
25546 | NULL, | |
25547 | NULL, | |
25548 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25549 | |
cd4fb1b2 SM |
25550 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25551 | Set debugging of the DWARF DIE reader."), _("\ | |
25552 | Show debugging of the DWARF DIE reader."), _("\ | |
25553 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25554 | The value is the maximum depth to print."), | |
25555 | NULL, | |
25556 | NULL, | |
25557 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25558 | |
cd4fb1b2 SM |
25559 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25560 | Set debugging of the dwarf line reader."), _("\ | |
25561 | Show debugging of the dwarf line reader."), _("\ | |
25562 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25563 | A value of 1 (one) provides basic information.\n\ | |
25564 | A value greater than 1 provides more verbose information."), | |
25565 | NULL, | |
25566 | NULL, | |
25567 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25568 | |
cd4fb1b2 SM |
25569 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25570 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25571 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25572 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25573 | the demangler."), | |
25574 | NULL, show_check_physname, | |
25575 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25576 | |
e615022a DE |
25577 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25578 | no_class, &use_deprecated_index_sections, _("\ | |
25579 | Set whether to use deprecated gdb_index sections."), _("\ | |
25580 | Show whether to use deprecated gdb_index sections."), _("\ | |
25581 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25582 | Normally they are ignored either because of a missing feature or\n\ | |
25583 | performance issue.\n\ | |
25584 | Warning: This option must be enabled before gdb reads the file."), | |
25585 | NULL, | |
25586 | NULL, | |
25587 | &setlist, &showlist); | |
25588 | ||
f1e6e072 TT |
25589 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25590 | &dwarf2_locexpr_funcs); | |
25591 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25592 | &dwarf2_loclist_funcs); | |
25593 | ||
25594 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25595 | &dwarf2_block_frame_base_locexpr_funcs); | |
25596 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25597 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25598 | |
25599 | #if GDB_SELF_TEST | |
25600 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25601 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
25602 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
25603 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 25604 | #endif |
6502dd73 | 25605 | } |